/* roulang page: index */
:root {
            --color-primary: #2D2A26;
            --color-accent: #C89B3C;
            --color-accent-hover: #B0892F;
            --color-accent-light: rgba(200, 155, 60, 0.08);
            --color-accent-subtle: rgba(200, 155, 60, 0.16);
            --color-bg: #F7F5F0;
            --color-text: #333333;
            --color-text-secondary: #666666;
            --color-text-muted: #999999;
            --color-border: #E5E2DA;
            --color-white: #FFFFFF;
            --color-dark-bg: #2D2A26;
            --color-dark-text: #E8E6E1;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', Georgia, serif;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 40px;
            --spacing-xxl: 64px;
            --spacing-xxxl: 80px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-serif);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: none;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
        }

        a:hover {
            color: var(--color-accent-hover);
        }

        a:focus,
        button:focus,
        input:focus,
        textarea:focus,
        select:focus {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        button {
            cursor: pointer;
            font-family: var(--font-sans);
            border: none;
            background: none;
            letter-spacing: 0.02em;
        }

        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--color-text);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background-color: var(--color-white);
            width: 100%;
        }

        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200, 155, 60, 0.12);
            outline: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-sans);
            font-weight: 700;
            line-height: 1.45;
            color: var(--color-primary);
            letter-spacing: 0.01em;
        }

        h1 {
            font-size: 40px;
            font-weight: 900;
            line-height: 1.3;
        }

        h2 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.4;
        }

        h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.5;
        }

        h4 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.5;
        }

        p {
            margin-bottom: 1em;
            font-size: 16px;
            line-height: 1.85;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        .section-pad {
            padding: var(--spacing-xxl) 0;
        }

        .section-pad-sm {
            padding: var(--spacing-xl) 0;
        }

        .section-heading {
            margin-bottom: var(--spacing-xl);
            text-align: left;
        }

        .section-heading .section-tag {
            display: inline-block;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            background-color: var(--color-accent-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: var(--spacing-sm);
        }

        .section-heading h2 {
            font-size: 28px;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
        }

        .section-heading .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 780px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.03em;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            line-height: 1.4;
        }

        .btn-primary {
            background-color: var(--color-accent);
            color: #1A1A1A;
            border: 1px solid var(--color-accent);
        }

        .btn-primary:hover {
            background-color: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            color: #1A1A1A;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:active {
            background-color: #9A7A2E;
            border-color: #9A7A2E;
            transform: translateY(0);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--color-accent);
            border: 1px solid var(--color-accent);
        }

        .btn-secondary:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            background-color: var(--color-accent-subtle);
            transform: translateY(0);
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            color: var(--color-accent);
            padding: 4px 0;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .btn-text:hover {
            color: var(--color-accent-hover);
            border-bottom-color: var(--color-accent);
        }

        .btn-large {
            padding: 16px 40px;
            font-size: 17px;
        }

        .btn-block {
            width: 100%;
            display: flex;
        }

        /* ========== Header / 导航 ========== */
        .site-header {
            background-color: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: var(--spacing-md);
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-sans);
            font-size: 22px;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 0.05em;
            text-decoration: none;
            flex-shrink: 0;
        }

        .brand-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: var(--color-accent);
            border-radius: 50%;
            color: var(--color-primary);
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .brand-logo:hover {
            color: var(--color-primary);
        }

        .brand-contact {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            font-family: var(--font-sans);
            font-size: 14px;
            color: var(--color-text-secondary);
            flex-shrink: 0;
        }

        .brand-contact .contact-phone {
            font-weight: 600;
            color: var(--color-accent);
            font-size: 15px;
        }

        .search-icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            border: 1px solid var(--color-border);
            background: none;
            font-size: 16px;
        }

        .search-icon-btn:hover {
            color: var(--color-accent);
            border-color: var(--color-accent);
            background-color: var(--color-accent-light);
        }

        .nav-row {
            display: flex;
            align-items: center;
            height: 50px;
            gap: var(--spacing-sm);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-row::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            flex-shrink: 0;
            padding: 0 16px;
            height: 50px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-bottom: 2px solid transparent;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            position: relative;
            text-decoration: none;
        }

        .nav-link:hover {
            color: var(--color-accent);
            border-bottom-color: var(--color-accent-subtle);
        }

        .nav-link.active {
            color: var(--color-accent);
            border-bottom-color: var(--color-accent);
            font-weight: 600;
        }

        .nav-toggle {
            display: none;
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 20px;
            cursor: pointer;
            background: none;
            transition: all var(--transition-fast);
        }

        .nav-toggle:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }

        /* ========== Hero Bento首屏 ========== */
        .hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 620px;
            display: flex;
            align-items: center;
            padding: var(--spacing-xxl) 0;
            isolation: isolate;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(45, 42, 38, 0.88) 0%, rgba(45, 42, 38, 0.72) 50%, rgba(45, 42, 38, 0.55) 100%);
            z-index: -1;
        }

        .hero-bento {
            display: grid;
            grid-template-columns: 1fr 320px;
            grid-template-rows: auto auto;
            gap: var(--spacing-lg);
            width: 100%;
        }

        .hero-main {
            grid-row: 1 / 3;
            grid-column: 1 / 2;
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl) var(--spacing-xl);
            display: flex;
            flex-direction: column;
            justify-content: center;
            color: var(--color-white);
        }

        .hero-main h1 {
            color: #FFFFFF;
            font-size: 42px;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.02em;
            max-width: 700px;
        }

        .hero-main .hero-sub {
            color: rgba(255, 255, 255, 0.88);
            font-size: 17px;
            line-height: 1.85;
            max-width: 620px;
            margin-bottom: var(--spacing-lg);
            font-family: var(--font-serif);
        }

        .hero-actions {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            align-items: center;
        }

        .hero-actions .btn-primary {
            background-color: var(--color-accent);
            border-color: var(--color-accent);
            color: #1A1A1A;
        }

        .hero-actions .btn-secondary {
            border-color: rgba(255, 255, 255, 0.5);
            color: #FFFFFF;
        }

        .hero-actions .btn-secondary:hover {
            border-color: var(--color-accent);
            background-color: var(--color-accent-light);
            color: #FFFFFF;
        }

        .hero-mini-card {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            justify-content: center;
            color: #FFFFFF;
            transition: all var(--transition-base);
        }

        .hero-mini-card:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }

        .hero-mini-card .mini-number {
            font-family: var(--font-sans);
            font-size: 36px;
            font-weight: 900;
            color: var(--color-accent);
            line-height: 1.2;
            margin-bottom: var(--spacing-xs);
        }

        .hero-mini-card .mini-label {
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 0.04em;
        }

        .hero-cta-strip {
            grid-column: 1 / 3;
            grid-row: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            padding: var(--spacing-md) var(--spacing-lg);
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            color: #FFFFFF;
        }

        .hero-cta-strip .strip-text {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            letter-spacing: 0.03em;
        }

        .hero-cta-strip .strip-cta {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        /* ========== 痛点区 ========== */
        .pain-points {
            background-color: var(--color-white);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .pain-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            margin-top: var(--spacing-xl);
        }

        .pain-item {
            padding: var(--spacing-lg);
            background-color: var(--color-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
        }

        .pain-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent-subtle);
            transform: translateY(-3px);
        }

        .pain-item .pain-icon {
            font-size: 32px;
            color: var(--color-accent);
            margin-bottom: var(--spacing-sm);
            display: block;
            line-height: 1;
        }

        .pain-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            line-height: 1.4;
        }

        .pain-item p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ========== 券面网格（服务方案） ========== */
        .solution-bento {
            background-color: var(--color-bg);
            position: relative;
        }

        .solution-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            margin-top: var(--spacing-xl);
        }

        .solution-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .solution-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent-subtle);
            transform: translateY(-4px);
        }

        .solution-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            flex-shrink: 0;
        }

        .solution-card .card-img .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(45, 42, 38, 0.85);
            color: #FFFFFF;
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 20px;
            letter-spacing: 0.04em;
        }

        .solution-card .card-body {
            padding: var(--spacing-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .solution-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            line-height: 1.4;
        }

        .solution-card .card-body p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: var(--spacing-md);
            flex: 1;
        }

        .solution-card .card-link {
            align-self: flex-start;
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
        }

        .solution-card .card-link:hover {
            color: var(--color-accent-hover);
            gap: 8px;
        }

        /* ========== 使用规则 / 服务流程 ========== */
        .process-section {
            background-color: var(--color-white);
            border-top: 1px solid var(--color-border);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .process-step {
            text-align: center;
            padding: var(--spacing-lg) var(--spacing-md);
            background-color: var(--color-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            position: relative;
        }

        .process-step:hover {
            border-color: var(--color-accent);
            transform: translateY(-3px);
            box-shadow: var(--shadow-sm);
        }

        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background-color: var(--color-accent);
            color: #1A1A1A;
            font-family: var(--font-sans);
            font-size: 20px;
            font-weight: 800;
            border-radius: 50%;
            margin-bottom: var(--spacing-sm);
        }

        .process-step h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
            line-height: 1.4;
        }

        .process-step p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 数据指标 ========== */
        .stats-section {
            background-color: var(--color-primary);
            color: var(--color-dark-text);
        }

        .stats-section .section-heading h2 {
            color: #FFFFFF;
        }

        .stats-section .section-heading .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            margin-top: var(--spacing-xl);
        }

        .stat-block {
            text-align: center;
            padding: var(--spacing-lg);
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition-base);
        }

        .stat-block:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--color-accent);
        }

        .stat-block .stat-number {
            font-family: var(--font-sans);
            font-size: 40px;
            font-weight: 900;
            color: var(--color-accent);
            line-height: 1.2;
            display: block;
            margin-bottom: var(--spacing-xs);
        }

        .stat-block .stat-label {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            letter-spacing: 0.03em;
        }

        /* ========== 客户证言 ========== */
        .testimonials {
            background-color: var(--color-bg);
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
            margin-top: var(--spacing-xl);
        }

        .testimonial-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            position: relative;
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .testimonial-card::before {
            content: '"';
            font-family: var(--font-serif);
            font-size: 64px;
            font-weight: 700;
            color: var(--color-accent-subtle);
            position: absolute;
            top: 8px;
            left: 20px;
            line-height: 1;
            pointer-events: none;
        }

        .testimonial-card .quote-text {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.8;
            margin-bottom: var(--spacing-md);
            position: relative;
            z-index: 1;
            padding-top: var(--spacing-md);
            font-style: italic;
        }

        .testimonial-card .client-info {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .client-info .client-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 700;
            color: var(--color-accent);
            flex-shrink: 0;
        }

        .client-info .client-name {
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.4;
        }

        .client-info .client-type {
            font-family: var(--font-sans);
            font-size: 12px;
            color: var(--color-text-muted);
            line-height: 1.4;
        }

        /* ========== 品牌介绍 / 深度内容A ========== */
        .brand-story {
            background-color: var(--color-white);
            border-top: 1px solid var(--color-border);
        }

        .brand-story-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        .brand-story-text {
            padding-right: var(--spacing-md);
        }

        .brand-story-text h2 {
            color: var(--color-primary);
            margin-bottom: var(--spacing-md);
        }

        .brand-story-text p {
            color: var(--color-text-secondary);
            line-height: 2;
            margin-bottom: var(--spacing-md);
            font-size: 15px;
        }

        .brand-story-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            min-height: 300px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        /* ========== 新闻中心 ========== */
        .news-section {
            background-color: var(--color-bg);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: var(--spacing-xl);
            margin-top: var(--spacing-xl);
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .news-item {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-lg);
            transition: all var(--transition-base);
        }

        .news-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--color-accent-subtle);
            transform: translateX(4px);
        }

        .news-date {
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background-color: var(--color-accent-light);
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
            text-align: center;
            min-width: 72px;
            line-height: 1.4;
        }

        .news-content {
            flex: 1;
        }

        .news-content h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
            line-height: 1.5;
        }

        .news-content p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-sm);
        }

        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .news-recommend {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .news-recommend:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--color-accent-subtle);
        }

        .news-recommend h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
            line-height: 1.5;
        }

        .news-recommend p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 深度内容区B ========== */
        .trend-article {
            background-color: var(--color-white);
            border-top: 1px solid var(--color-border);
        }

        .trend-article-body {
            max-width: 850px;
            margin: 0 auto;
        }

        .trend-article-body h2 {
            color: var(--color-primary);
            margin-bottom: var(--spacing-lg);
            text-align: center;
            font-size: 26px;
        }

        .trend-article-body h3 {
            color: var(--color-primary);
            margin: var(--spacing-lg) 0 var(--spacing-sm);
            font-size: 19px;
        }

        .trend-article-body p {
            color: var(--color-text-secondary);
            line-height: 2;
            margin-bottom: var(--spacing-md);
            font-size: 15px;
        }

        /* ========== 入口矩阵 ========== */
        .entry-matrix {
            background-color: var(--color-bg);
        }

        .entry-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .entry-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            padding: var(--spacing-lg);
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            text-decoration: none;
            color: var(--color-text);
        }

        .entry-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            color: var(--color-primary);
        }

        .entry-card .entry-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background-color: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-accent);
            margin-bottom: var(--spacing-sm);
        }

        .entry-card .entry-name {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.4;
        }

        .entry-card .entry-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-top: var(--spacing-xs);
        }

        /* ========== 精选分类 ========== */
        .featured-categories {
            background-color: var(--color-white);
            border-top: 1px solid var(--color-border);
        }

        .featured-tags {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            margin-top: var(--spacing-lg);
        }

        .featured-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background-color: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: 30px;
            padding: 8px 18px;
            transition: all var(--transition-fast);
            text-decoration: none;
            letter-spacing: 0.02em;
        }

        .featured-tag:hover {
            color: var(--color-accent);
            border-color: var(--color-accent);
            background-color: var(--color-accent-light);
            transform: translateY(-2px);
        }

        /* ========== 奖励预览 ========== */
        .rewards-section {
            background-color: var(--color-primary);
            color: var(--color-dark-text);
        }

        .rewards-section .section-heading h2 {
            color: #FFFFFF;
        }

        .rewards-section .section-heading .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        .rewards-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .reward-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            text-align: center;
            transition: all var(--transition-base);
        }

        .reward-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--color-accent);
            transform: translateY(-3px);
        }

        .reward-card .reward-icon {
            font-size: 32px;
            margin-bottom: var(--spacing-xs);
            display: block;
            line-height: 1;
        }

        .reward-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: var(--spacing-xs);
        }

        .reward-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background-color: var(--color-bg);
        }

        .faq-list {
            max-width: 800px;
            margin: var(--spacing-xl) auto 0;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .faq-item {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--color-accent-subtle);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-md) var(--spacing-lg);
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            text-align: left;
            gap: var(--spacing-md);
            transition: color var(--transition-fast);
            cursor: pointer;
            background: none;
            border: none;
            letter-spacing: 0.02em;
            line-height: 1.5;
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-question .faq-toggle-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: var(--color-accent-light);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-accent);
            transition: all var(--transition-base);
            font-weight: 400;
            line-height: 1;
        }

        .faq-item.active .faq-toggle-icon {
            transform: rotate(45deg);
            background-color: var(--color-accent);
            color: #1A1A1A;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 var(--spacing-lg);
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 var(--spacing-lg) var(--spacing-lg);
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin-bottom: 0;
        }

        /* ========== CTA 最终转化 ========== */
        .cta-final {
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            padding: var(--spacing-xxl) 0;
            isolation: isolate;
            text-align: center;
        }

        .cta-final::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(45, 42, 38, 0.88) 0%, rgba(45, 42, 38, 0.82) 100%);
            z-index: -1;
        }

        .cta-final .cta-content {
            max-width: 700px;
            margin: 0 auto;
            padding: var(--spacing-xl);
        }

        .cta-final h2 {
            color: #FFFFFF;
            font-size: 32px;
            font-weight: 900;
            letter-spacing: 0.03em;
            margin-bottom: var(--spacing-md);
            line-height: 1.35;
        }

        .cta-final p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            line-height: 1.85;
            margin-bottom: var(--spacing-lg);
        }

        .cta-final .cta-actions {
            display: flex;
            gap: var(--spacing-md);
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== Footer ========== */
        .site-footer {
            background-color: var(--color-primary);
            color: var(--color-dark-text);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            border-top: 3px solid var(--color-accent);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .footer-logo {
            font-family: var(--font-sans);
            font-size: 22px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.05em;
            margin-bottom: var(--spacing-sm);
            display: inline-block;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-bottom: 0;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.04em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: var(--spacing-xs);
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: all var(--transition-fast);
            text-decoration: none;
            line-height: 1.6;
            display: inline-block;
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            padding-top: var(--spacing-md);
        }

        .footer-bottom .footer-links {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }

        .footer-bottom .footer-links a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-bottom .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-bottom .beian {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            align-items: center;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            h1 {
                font-size: 34px;
            }
            h2 {
                font-size: 24px;
            }
            .hero-bento {
                grid-template-columns: 1fr 260px;
            }
            .hero-main h1 {
                font-size: 34px;
            }
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(3, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .brand-story-layout {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .rewards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .section-pad {
                padding: var(--spacing-xl) 0;
            }
            .brand-row {
                height: 54px;
                gap: var(--spacing-sm);
            }
            .brand-logo {
                font-size: 19px;
            }
            .brand-logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
            .brand-contact {
                font-size: 12px;
            }
            .brand-contact .contact-phone {
                font-size: 13px;
            }
            .nav-row {
                height: auto;
                min-height: 50px;
                flex-wrap: wrap;
                gap: 0;
            }
            .nav-link {
                height: 44px;
                padding: 0 12px;
                font-size: 14px;
            }
            .nav-toggle {
                display: flex;
                position: absolute;
                right: 16px;
                top: 10px;
                z-index: 101;
            }
            .nav-row {
                display: none;
                flex-direction: column;
                align-items: stretch;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background-color: var(--color-white);
                box-shadow: var(--shadow-md);
                padding: var(--spacing-md) 16px;
                z-index: 100;
                border-top: 1px solid var(--color-border);
                max-height: 70vh;
                overflow-y: auto;
            }
            .nav-row.open {
                display: flex;
            }
            .nav-link {
                height: 52px;
                border-bottom: 1px solid var(--color-border);
                border-radius: 0;
                width: 100%;
                padding: 0 4px;
                font-size: 15px;
                justify-content: flex-start;
            }
            .nav-link:last-child {
                border-bottom: none;
            }
            .nav-link.active {
                border-bottom: 1px solid var(--color-accent);
                background-color: var(--color-accent-light);
            }
            .hero-bento {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
                gap: var(--spacing-sm);
            }
            .hero-main {
                grid-row: auto;
                grid-column: auto;
                padding: var(--spacing-lg);
            }
            .hero-main h1 {
                font-size: 28px;
            }
            .hero-mini-card {
                padding: var(--spacing-md);
            }
            .hero-cta-strip {
                grid-column: auto;
                grid-row: auto;
            }
            .pain-grid,
            .solution-grid,
            .process-steps,
            .stats-grid,
            .testimonial-grid,
            .entry-grid,
            .rewards-grid {
                grid-template-columns: 1fr;
            }
            .solution-card .card-img {
                height: 140px;
            }
            .process-step {
                text-align: left;
                display: flex;
                align-items: flex-start;
                gap: var(--spacing-md);
                padding: var(--spacing-md);
            }
            .process-step .step-num {
                flex-shrink: 0;
                margin-bottom: 0;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-sm);
            }
            .cta-final h2 {
                font-size: 26px;
            }
            .btn-large {
                padding: 14px 28px;
                font-size: 15px;
            }
            .news-item {
                flex-direction: column;
                gap: var(--spacing-sm);
            }
        }

        @media (max-width: 520px) {
            h1 {
                font-size: 24px;
            }
            h2 {
                font-size: 21px;
            }
            .section-heading h2 {
                font-size: 21px;
            }
            .hero {
                min-height: 480px;
            }
            .hero-main h1 {
                font-size: 23px;
                line-height: 1.35;
            }
            .hero-main .hero-sub {
                font-size: 15px;
                line-height: 1.75;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-mini-card .mini-number {
                font-size: 28px;
            }
            .cta-final h2 {
                font-size: 22px;
            }
            .btn {
                font-size: 14px;
                padding: 10px 20px;
            }
            .pain-item h3,
            .solution-card .card-body h3 {
                font-size: 16px;
            }
            .stat-block .stat-number {
                font-size: 30px;
            }
            .testimonial-card {
                padding: var(--spacing-md);
            }
            .entry-card {
                padding: var(--spacing-md);
            }
            .reward-card {
                padding: var(--spacing-md);
            }
            .faq-question {
                font-size: 14px;
                padding: var(--spacing-sm) var(--spacing-md);
            }
            .faq-answer p {
                font-size: 14px;
            }
            .brand-story-image {
                min-height: 200px;
            }
            .trend-article-body h2 {
                font-size: 22px;
            }
            .trend-article-body p {
                font-size: 14px;
                line-height: 1.8;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #2D2A26;
            --color-accent: #C89B3C;
            --color-accent-hover: #B0892F;
            --color-accent-light: rgba(200, 155, 60, 0.08);
            --color-accent-subtle: rgba(200, 155, 60, 0.16);
            --color-bg: #F7F5F0;
            --color-text: #333333;
            --color-text-secondary: #666666;
            --color-text-muted: #999999;
            --color-border: #E5E2DA;
            --color-white: #FFFFFF;
            --color-dark-bg: #2D2A26;
            --color-dark-text: #E8E6E1;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', Georgia, serif;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 40px;
            --spacing-xxl: 64px;
            --spacing-xxxl: 80px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-serif);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
            margin: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: none;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: var(--color-accent-hover);
        }

        a:focus,
        button:focus,
        input:focus,
        textarea:focus,
        select:focus {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        button {
            cursor: pointer;
            font-family: var(--font-sans);
            border: none;
            background: none;
            letter-spacing: 0.02em;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        .section-pad {
            padding: var(--spacing-xxl) 0;
        }

        .section-pad-sm {
            padding: var(--spacing-xl) 0;
        }

        .section-heading {
            margin-bottom: var(--spacing-xl);
            text-align: left;
        }

        .section-heading .section-tag {
            display: inline-block;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            background-color: var(--color-accent-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: var(--spacing-sm);
        }

        .section-heading h2 {
            font-size: 28px;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            font-family: var(--font-sans);
            font-weight: 700;
            line-height: 1.4;
        }

        .section-heading .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 780px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.03em;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            line-height: 1.4;
            border: 1px solid transparent;
        }

        .btn-primary {
            background-color: var(--color-accent);
            color: #1A1A1A;
            border-color: var(--color-accent);
        }

        .btn-primary:hover {
            background-color: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            color: #1A1A1A;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:active {
            transform: translateY(0);
            background-color: #A07825;
            border-color: #A07825;
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--color-accent);
            border-color: var(--color-accent);
        }

        .btn-secondary:hover {
            background-color: var(--color-accent-light);
            color: var(--color-accent);
            transform: translateY(-1px);
        }

        /* Header */
        .site-header {
            background-color: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            min-height: 60px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-sans);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.04em;
            text-decoration: none;
        }

        .brand-logo:hover {
            color: var(--color-primary);
            opacity: 0.85;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: var(--color-accent);
            color: var(--color-primary);
            border-radius: var(--radius-md);
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .brand-contact {
            display: flex;
            align-items: center;
            gap: 16px;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        .contact-phone {
            font-weight: 700;
            color: var(--color-primary);
            font-size: 15px;
            letter-spacing: 0.02em;
        }

        .search-icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            border: 1px solid var(--color-border);
            background: var(--color-white);
        }

        .search-icon-btn:hover {
            color: var(--color-accent);
            border-color: var(--color-accent);
            background-color: var(--color-accent-light);
        }

        .nav-row {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
            padding: 8px 0;
            min-height: 50px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
            text-decoration: none;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
            opacity: 0;
            transition: opacity var(--transition-fast);
        }

        .nav-link:hover {
            color: var(--color-accent);
            background-color: var(--color-accent-light);
        }

        .nav-link:hover::after {
            opacity: 0.5;
        }

        .nav-link.active {
            color: var(--color-accent);
            font-weight: 600;
        }

        .nav-link.active::after {
            opacity: 1;
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            color: var(--color-primary);
            border: 1px solid var(--color-border);
            background: var(--color-white);
            transition: all var(--transition-fast);
        }

        .nav-toggle:hover {
            color: var(--color-accent);
            border-color: var(--color-accent);
        }

        /* Breadcrumb */
        .breadcrumb {
            padding: 20px 0 0;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            text-decoration: none;
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .separator {
            color: var(--color-border);
        }

        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 500;
        }

        /* Category Hero */
        .category-hero {
            padding: var(--spacing-xl) 0 var(--spacing-xxl);
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
            margin-top: 0;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(45, 42, 38, 0.92) 0%, rgba(45, 42, 38, 0.68) 60%, rgba(200, 155, 60, 0.35) 100%);
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .category-hero-inner {
            display: flex;
            align-items: center;
            gap: var(--spacing-xxl);
            flex-wrap: wrap;
        }

        .category-hero-content {
            flex: 1 1 55%;
            min-width: 300px;
        }

        .category-hero-content .hero-tag {
            display: inline-block;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            background-color: rgba(200, 155, 60, 0.15);
            border: 1px solid rgba(200, 155, 60, 0.4);
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: var(--spacing-md);
        }

        .category-hero-content h1 {
            font-family: var(--font-sans);
            font-size: 38px;
            font-weight: 900;
            color: #FFFFFF;
            margin-bottom: var(--spacing-md);
            line-height: 1.3;
            letter-spacing: 0.03em;
        }

        .category-hero-content h1 .highlight {
            color: var(--color-accent);
        }

        .category-hero-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            line-height: 1.85;
            margin-bottom: var(--spacing-lg);
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-actions .btn-secondary {
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.5);
        }

        .hero-actions .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            border-color: #FFFFFF;
        }

        .category-hero-visual {
            flex: 1 1 35%;
            min-width: 280px;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .hero-image-frame {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 2px solid rgba(255, 255, 255, 0.2);
        }

        .hero-image-frame img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 16/10;
        }

        .hero-stats {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }

        .hero-stat {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-md);
            padding: 14px 20px;
            text-align: center;
            flex: 1 1 100px;
        }

        .hero-stat .stat-number {
            font-family: var(--font-sans);
            font-size: 24px;
            font-weight: 700;
            color: var(--color-accent);
            display: block;
            line-height: 1.3;
        }

        .hero-stat .stat-label {
            font-family: var(--font-sans);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.75);
            letter-spacing: 0.04em;
        }

        /* Alternating sections */
        .alt-section {
            padding: var(--spacing-xxl) 0;
        }

        .alt-section:nth-child(even) {
            background-color: var(--color-white);
        }

        .alt-section:nth-child(odd) {
            background-color: var(--color-bg);
        }

        .alt-row {
            display: flex;
            align-items: center;
            gap: var(--spacing-xxl);
            flex-wrap: wrap;
        }

        .alt-row.reverse {
            flex-direction: row-reverse;
        }

        .alt-image {
            flex: 1 1 42%;
            min-width: 300px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            position: relative;
        }

        .alt-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
            transition: transform var(--transition-slow);
        }

        .alt-image:hover img {
            transform: scale(1.03);
        }

        .alt-image .image-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(45, 42, 38, 0.85), transparent);
            color: #FFFFFF;
            font-family: var(--font-sans);
            font-size: 13px;
            padding: 40px 20px 14px;
            letter-spacing: 0.03em;
        }

        .alt-content {
            flex: 1 1 48%;
            min-width: 300px;
        }

        .alt-content h2 {
            font-family: var(--font-sans);
            font-size: 26px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-md);
            line-height: 1.4;
        }

        .alt-content p {
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-md);
            line-height: 1.85;
        }

        .alt-content .feature-list {
            list-style: none;
            padding: 0;
            margin: var(--spacing-md) 0;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .alt-content .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.7;
        }

        .alt-content .feature-list li .check-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background-color: var(--color-accent-light);
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            margin-top: 5px;
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: var(--spacing-md);
        }

        .tag-item {
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            padding: 4px 14px;
            border-radius: 20px;
            transition: all var(--transition-fast);
        }

        .tag-item:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background-color: var(--color-accent-light);
        }

        /* Creative process */
        .process-section {
            background-color: var(--color-dark-bg);
            padding: var(--spacing-xxl) 0;
            position: relative;
            overflow: hidden;
        }

        .process-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(200, 155, 60, 0.15), transparent 70%);
        }

        .process-section .section-heading h2 {
            color: #FFFFFF;
        }

        .process-section .section-heading .section-desc {
            color: rgba(255, 255, 255, 0.6);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            counter-reset: step-counter;
        }

        .process-step {
            counter-increment: step-counter;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            transition: all var(--transition-base);
            position: relative;
        }

        .process-step:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(200, 155, 60, 0.4);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .process-step::before {
            content: counter(step-counter, decimal-leading-zero);
            font-family: var(--font-sans);
            font-size: 42px;
            font-weight: 900;
            color: rgba(200, 155, 60, 0.3);
            display: block;
            margin-bottom: var(--spacing-sm);
            line-height: 1;
        }

        .process-step h3 {
            font-family: var(--font-sans);
            font-size: 17px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: var(--spacing-sm);
        }

        .process-step p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* Service cards grid */
        .creative-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .creative-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }

        .creative-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--color-accent-subtle);
        }

        .creative-card .card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }

        .creative-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .creative-card:hover .card-image img {
            transform: scale(1.05);
        }

        .creative-card .card-body {
            padding: var(--spacing-lg);
        }

        .creative-card .card-body h3 {
            font-family: var(--font-sans);
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
        }

        .creative-card .card-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: var(--spacing-md);
        }

        .creative-card .card-link {
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            text-decoration: none;
        }

        .creative-card .card-link:hover {
            color: var(--color-accent-hover);
            gap: 8px;
        }

        /* FAQ */
        .faq-section {
            padding: var(--spacing-xxl) 0;
            background-color: var(--color-white);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background: var(--color-bg);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--color-accent-subtle);
        }

        .faq-item.open {
            border-color: var(--color-accent);
            background: var(--color-white);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            text-align: left;
            background: none;
            border: none;
            cursor: pointer;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-item.open .faq-question {
            color: var(--color-accent);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: var(--color-accent-light);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background-color: var(--color-accent);
            color: #1A1A1A;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 20px 16px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* CTA */
        .cta-section {
            padding: var(--spacing-xxl) 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(45, 42, 38, 0.9), rgba(45, 42, 38, 0.7));
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .cta-section h2 {
            font-family: var(--font-sans);
            font-size: 32px;
            font-weight: 900;
            color: #FFFFFF;
            margin-bottom: var(--spacing-sm);
            line-height: 1.35;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto var(--spacing-lg);
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-actions .btn-secondary {
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.5);
        }

        .cta-actions .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            border-color: #FFFFFF;
        }

        /* Related links */
        .related-section {
            padding: var(--spacing-xl) 0;
            background-color: var(--color-bg);
        }

        .related-links {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .related-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: var(--color-white);
            border: 1px solid var(--color-border);
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: all var(--transition-fast);
        }

        .related-link:hover {
            color: var(--color-accent);
            border-color: var(--color-accent);
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-dark-bg);
            color: var(--color-dark-text);
            padding: var(--spacing-xxl) 0 var(--spacing-lg);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1.5fr 1.5fr 1.2fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }

        .footer-brand .brand-logo {
            color: #FFFFFF;
            margin-bottom: var(--spacing-md);
        }

        .footer-brand .brand-logo:hover {
            color: #FFFFFF;
            opacity: 0.85;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            max-width: 280px;
        }

        .footer-links h4,
        .footer-contact h4 {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.04em;
        }

        .footer-links a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            margin-bottom: var(--spacing-sm);
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: var(--spacing-sm);
            line-height: 1.7;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--spacing-lg);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-md);
        }

        .footer-copy {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .beian {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .beian a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .beian a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }

            .creative-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .category-hero-content h1 {
                font-size: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }

            .nav-row {
                display: none;
                flex-direction: column;
                align-items: stretch;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--color-white);
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                padding: var(--spacing-md);
                gap: 4px;
                z-index: 99;
            }

            .nav-row.open {
                display: flex;
            }

            .nav-link {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }

            .nav-link::after {
                display: none;
            }

            .nav-link.active {
                background-color: var(--color-accent-light);
            }

            .brand-contact {
                gap: 8px;
            }

            .contact-phone {
                font-size: 13px;
            }

            .category-hero-inner {
                flex-direction: column;
            }

            .category-hero-content h1 {
                font-size: 26px;
            }

            .alt-row,
            .alt-row.reverse {
                flex-direction: column;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }

            .process-steps {
                grid-template-columns: 1fr;
            }

            .creative-grid {
                grid-template-columns: 1fr;
            }

            .section-heading h2 {
                font-size: 22px;
            }

            .cta-section h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 520px) {
            .brand-row {
                flex-wrap: wrap;
                gap: 8px;
            }

            .brand-logo {
                font-size: 18px;
            }

            .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }

            .brand-contact {
                font-size: 11px;
                flex-wrap: wrap;
            }

            .contact-phone {
                font-size: 11px;
            }

            .search-icon-btn {
                width: 32px;
                height: 32px;
            }

            .category-hero-content h1 {
                font-size: 22px;
            }

            .category-hero-content p {
                font-size: 14px;
            }

            .btn {
                font-size: 14px;
                padding: 10px 20px;
                width: 100%;
            }

            .hero-actions,
            .cta-actions {
                flex-direction: column;
            }

            .alt-content h2 {
                font-size: 20px;
            }

            .process-step::before {
                font-size: 32px;
            }
        }

/* roulang page: category3 */
:root {
  --color-primary: #2D2A26;
  --color-accent: #C89B3C;
  --color-accent-hover: #B0892F;
  --color-accent-light: rgba(200, 155, 60, 0.08);
  --color-accent-subtle: rgba(200, 155, 60, 0.16);
  --color-bg: #F7F5F0;
  --color-text: #333333;
  --color-text-secondary: #666666;
  --color-text-muted: #999999;
  --color-border: #E5E2DA;
  --color-white: #FFFFFF;
  --color-dark-bg: #2D2A26;
  --color-dark-text: #E8E6E1;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', Georgia, serif;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 40px;
  --spacing-xxl: 64px;
  --spacing-xxxl: 80px;
  --container-max: 1200px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.45s ease;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
  min-height: 100vh;
  margin: 0;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
  border: none;
}
a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}
a:hover {
  color: var(--color-accent-hover);
}
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
button {
  cursor: pointer;
  font-family: var(--font-sans);
  border: none;
  background: none;
  letter-spacing: 0.02em;
}
input,
textarea,
select {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  background-color: var(--color-white);
  width: 100%;
}
input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(200, 155, 60, 0.12);
  outline: none;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}
.section-pad {
  padding: var(--spacing-xxl) 0;
}
.section-pad-sm {
  padding: var(--spacing-xl) 0;
}
.section-heading {
  margin-bottom: var(--spacing-xl);
  text-align: left;
}
.section-heading .section-tag {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: var(--spacing-sm);
}
.section-heading h2 {
  font-family: var(--font-sans);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
}
.section-heading .section-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 780px;
  line-height: 1.8;
  margin-bottom: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
  line-height: 1.4;
}
.btn-primary {
  background-color: var(--color-accent);
  color: #1A1A1A;
  border: 1px solid var(--color-accent);
}
.btn-primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #1A1A1A;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.btn-primary:active {
  background-color: #9A7A2E;
  border-color: #9A7A2E;
  transform: translateY(0);
  box-shadow: none;
}
.btn-secondary {
  background-color: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}
.btn-secondary:hover {
  background-color: var(--color-accent-light);
  color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-1px);
}
.btn-secondary:active {
  background-color: var(--color-accent-subtle);
  transform: translateY(0);
}
.btn-light {
  background-color: var(--color-white);
  color: var(--color-primary);
  border: 1px solid var(--color-white);
}
.btn-light:hover {
  background-color: #F0EDE6;
  border-color: #F0EDE6;
  color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.badge {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 4px 12px;
  border-radius: 20px;
  background-color: var(--color-accent-light);
  color: var(--color-accent);
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 20px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}
.tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: var(--color-accent-light);
}

/* ========== Header/Nav ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid var(--color-border);
}
.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
  padding: 8px 0;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: 0.04em;
  line-height: 1;
}
.brand-logo:hover {
  color: var(--color-primary);
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary);
  color: var(--color-accent);
  font-size: 19px;
  font-weight: 900;
  flex-shrink: 0;
}
.brand-contact {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--color-text-secondary);
  flex-wrap: wrap;
}
.brand-contact .contact-phone {
  font-weight: 700;
  font-size: 16px;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}
.search-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: var(--color-primary);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}
.search-icon-btn:hover {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  position: absolute;
  top: 8px;
  right: 20px;
}
.nav-row {
  display: flex;
  align-items: center;
  gap: 4px;
  min-height: 50px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 4px;
}
.nav-row::-webkit-scrollbar {
  display: none;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  position: relative;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: all var(--transition-fast);
  line-height: 1.2;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 1px;
  transition: width var(--transition-fast);
}
.nav-link:hover {
  color: var(--color-primary);
  background-color: var(--color-bg);
}
.nav-link:hover::after {
  width: 70%;
}
.nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-accent-light);
}
.nav-link.active::after {
  width: 70%;
}
.nav-link.active:hover::after {
  width: 70%;
}

/* ========== Category Hero ========== */
.category-hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  overflow: hidden;
}
.category-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(45,42,38,0.88) 0%, rgba(45,42,38,0.62) 55%, rgba(200,155,60,0.35) 100%);
}
.category-hero .container {
  position: relative;
  z-index: 2;
  padding-top: var(--spacing-xxl);
  padding-bottom: var(--spacing-xxl);
}
.category-hero-content {
  max-width: 700px;
}
.category-hero .badge {
  background-color: rgba(200,155,60,0.22);
  color: #F0D28A;
  border: 1px solid rgba(200,155,60,0.4);
  margin-bottom: var(--spacing-md);
}
.category-hero h1 {
  font-family: var(--font-sans);
  font-size: 38px;
  font-weight: 900;
  line-height: 1.3;
  color: var(--color-white);
  margin: 0 0 var(--spacing-md) 0;
  letter-spacing: 0.02em;
}
.category-hero .hero-subtitle {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.9;
  color: rgba(232,230,225,0.88);
  margin-bottom: var(--spacing-lg);
  max-width: 620px;
}
.category-hero-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}
.category-hero-stats {
  display: flex;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
  flex-wrap: wrap;
}
.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-stat .stat-number {
  font-family: var(--font-sans);
  font-size: 28px;
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1.2;
}
.hero-stat .stat-label {
  font-family: var(--font-sans);
  font-size: 13px;
  color: rgba(232,230,225,0.7);
  letter-spacing: 0.04em;
}

/* ========== Intro Narrative ========== */
.intro-narrative {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}
.intro-narrative .container {
  max-width: 860px;
}
.intro-narrative .narrative-text {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 2;
  color: var(--color-text);
  text-align: justify;
}
.intro-narrative .narrative-text p {
  margin-bottom: var(--spacing-md);
}
.intro-narrative .narrative-text p:last-child {
  margin-bottom: 0;
}
.intro-narrative .narrative-text strong {
  color: var(--color-primary);
  font-weight: 700;
}

/* ========== Alternating Showcase ========== */
.alternate-section {
  background-color: var(--color-bg);
}
.alternate-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: center;
  margin-bottom: var(--spacing-xxxl);
}
.alternate-block:last-child {
  margin-bottom: 0;
}
.alternate-block.reverse .alternate-image {
  order: 2;
}
.alternate-block.reverse .alternate-content {
  order: 1;
}
.alternate-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  aspect-ratio: 4/3;
}
.alternate-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.alternate-image:hover img {
  transform: scale(1.03);
}
.alternate-content .alt-number {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.06em;
  margin-bottom: var(--spacing-sm);
}
.alternate-content h3 {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  line-height: 1.4;
}
.alternate-content p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.85;
  margin-bottom: var(--spacing-md);
}
.alternate-content .alt-tags {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
}
.alternate-content .alt-link {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color var(--transition-fast);
}
.alternate-content .alt-link:hover {
  color: var(--color-accent-hover);
}

/* ========== Creative Services Grid ========== */
.creative-services {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.creative-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}
.creative-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}
.creative-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--color-accent);
}
.creative-card .card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  font-weight: 700;
  font-family: var(--font-sans);
}
.creative-card h4 {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
}
.creative-card p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* ========== Process Steps ========== */
.process-section {
  background-color: var(--color-bg);
}
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-md);
  counter-reset: step-counter;
}
.process-step {
  position: relative;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
  counter-increment: step-counter;
}
.process-step:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--color-accent);
}
.process-step::before {
  content: counter(step-counter, decimal-leading-zero);
  font-family: var(--font-sans);
  font-size: 28px;
  font-weight: 900;
  color: var(--color-accent);
  opacity: 0.55;
  display: block;
  margin-bottom: var(--spacing-sm);
  line-height: 1;
}
.process-step h4 {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  line-height: 1.4;
}
.process-step p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* ========== Scenarios ========== */
.scenarios-section {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}
.scenario-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}
.scenario-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.scenario-card .scenario-img {
  aspect-ratio: 16/10;
  overflow: hidden;
}
.scenario-card .scenario-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.scenario-card:hover .scenario-img img {
  transform: scale(1.05);
}
.scenario-card .scenario-body {
  padding: var(--spacing-md);
  background-color: var(--color-white);
}
.scenario-card .scenario-body h4 {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}
.scenario-card .scenario-body p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* ========== Data Highlight ========== */
.data-highlight {
  background-color: var(--color-dark-bg);
  color: var(--color-dark-text);
}
.data-highlight .section-heading h2 {
  color: var(--color-white);
}
.data-highlight .section-heading .section-desc {
  color: rgba(232,230,225,0.7);
}
.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}
.data-item {
  text-align: center;
  padding: var(--spacing-lg);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}
.data-item:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(200,155,60,0.4);
  transform: translateY(-3px);
}
.data-item .data-number {
  font-family: var(--font-sans);
  font-size: 36px;
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1.2;
  margin-bottom: var(--spacing-xs);
}
.data-item .data-label {
  font-family: var(--font-sans);
  font-size: 14px;
  color: rgba(232,230,225,0.75);
  letter-spacing: 0.04em;
}

/* ========== FAQ ========== */
.faq-section {
  background-color: var(--color-bg);
}
.faq-list {
  max-width: 800px;
}
.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
  transition: all var(--transition-base);
}
.faq-item:hover {
  border-color: var(--color-accent);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  width: 100%;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  transition: color var(--transition-fast);
  background: none;
  border: none;
  letter-spacing: 0.01em;
  line-height: 1.5;
}
.faq-question:hover {
  color: var(--color-accent);
}
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  transition: transform var(--transition-fast);
}
.faq-item.open .faq-question .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}
.faq-item.open .faq-answer {
  max-height: 400px;
}
.faq-answer-inner {
  padding: 0 var(--spacing-lg) var(--spacing-md);
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ========== CTA ========== */
.cta-section {
  background-image: url('/assets/images/backpic/back-3.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  color: var(--color-white);
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(45,42,38,0.92) 0%, rgba(45,42,38,0.78) 60%, rgba(200,155,60,0.55) 100%);
}
.cta-section .container {
  position: relative;
  z-index: 2;
  text-align: center;
}
.cta-section h2 {
  font-family: var(--font-sans);
  font-size: 30px;
  font-weight: 900;
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  line-height: 1.3;
}
.cta-section p {
  font-size: 16px;
  color: rgba(232,230,225,0.85);
  max-width: 640px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.8;
}

/* ========== Related Links ========== */
.related-section {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}
.related-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all var(--transition-base);
}
.related-card:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}
.related-card:hover {
  color: var(--color-primary);
}
.related-card .related-mark {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 18px;
}
.related-card .related-info h4 {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 2px;
  line-height: 1.3;
}
.related-card .related-info span {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ========== Footer ========== */
.site-footer {
  background-color: var(--color-dark-bg);
  color: var(--color-dark-text);
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand p {
  font-size: 14px;
  color: rgba(232,230,225,0.6);
  line-height: 1.7;
  margin-top: var(--spacing-sm);
  max-width: 280px;
}
.footer-links h4,
.footer-contact h4 {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.03em;
}
.footer-links a {
  display: block;
  font-family: var(--font-sans);
  font-size: 13px;
  color: rgba(232,230,225,0.65);
  margin-bottom: var(--spacing-sm);
  transition: color var(--transition-fast);
  line-height: 1.5;
}
.footer-links a:hover {
  color: var(--color-accent);
}
.footer-contact p {
  font-size: 13px;
  color: rgba(232,230,225,0.65);
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  padding-top: var(--spacing-md);
}
.footer-copy {
  font-size: 13px;
  color: rgba(232,230,225,0.5);
}
.beian {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  font-size: 12px;
  color: rgba(232,230,225,0.45);
}
.beian span,
.beian a {
  font-family: var(--font-sans);
  font-size: 12px;
  color: rgba(232,230,225,0.45);
}
.beian a:hover {
  color: var(--color-accent);
}
.footer-logo {
  font-size: 20px;
}
.footer-logo .logo-mark {
  width: 34px;
  height: 34px;
  font-size: 17px;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .creative-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-steps {
    grid-template-columns: repeat(3, 1fr);
  }
  .process-step:nth-child(4),
  .process-step:nth-child(5) {
    grid-column: span 1;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  .brand-row {
    min-height: 56px;
    padding: 6px 0;
  }
  .brand-logo {
    font-size: 18px;
  }
  .logo-mark {
    width: 32px;
    height: 32px;
    font-size: 16px;
  }
  .brand-contact span:first-child {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-row {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--spacing-sm) 0;
    background-color: var(--color-white);
    border-top: 1px solid var(--color-border);
    max-height: 60vh;
    overflow-y: auto;
  }
  .nav-row.open {
    display: flex;
  }
  .nav-link {
    padding: 12px 16px;
    border-radius: 0;
    font-size: 14px;
    border-bottom: 1px solid var(--color-border);
  }
  .nav-link::after {
    display: none;
  }
  .nav-link.active {
    background-color: var(--color-accent-light);
    border-left: 3px solid var(--color-accent);
  }
  .category-hero {
    min-height: 360px;
  }
  .category-hero h1 {
    font-size: 28px;
  }
  .category-hero .hero-subtitle {
    font-size: 15px;
  }
  .category-hero-stats {
    gap: var(--spacing-lg);
  }
  .hero-stat .stat-number {
    font-size: 22px;
  }
  .alternate-block {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
  }
  .alternate-block.reverse .alternate-image {
    order: 1;
  }
  .alternate-block.reverse .alternate-content {
    order: 2;
  }
  .alternate-image {
    aspect-ratio: 16/9;
  }
  .creative-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
  }
  .scenario-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
  }
  .data-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
  }
  .related-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .section-heading h2 {
    font-size: 24px;
  }
  .cta-section h2 {
    font-size: 24px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .section-pad {
    padding: var(--spacing-xl) 0;
  }
  .section-pad-sm {
    padding: var(--spacing-lg) 0;
  }
  .brand-contact {
    gap: var(--spacing-sm);
  }
  .brand-contact .contact-phone {
    font-size: 13px;
  }
  .category-hero {
    min-height: 320px;
  }
  .category-hero h1 {
    font-size: 24px;
  }
  .category-hero .hero-subtitle {
    font-size: 14px;
    line-height: 1.7;
  }
  .category-hero-actions {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  .category-hero-actions .btn {
    width: 100%;
  }
  .category-hero-stats {
    gap: var(--spacing-md);
  }
  .hero-stat .stat-number {
    font-size: 20px;
  }
  .creative-grid {
    grid-template-columns: 1fr;
  }
  .process-steps {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
  }
  .scenario-grid {
    grid-template-columns: 1fr;
  }
  .data-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
  }
  .data-item {
    padding: var(--spacing-md);
  }
  .data-item .data-number {
    font-size: 26px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .section-heading h2 {
    font-size: 21px;
  }
  .section-heading .section-desc {
    font-size: 14px;
  }
  .faq-question {
    font-size: 14px;
    padding: var(--spacing-sm) var(--spacing-md);
  }
  .faq-answer-inner {
    padding: 0 var(--spacing-md) var(--spacing-sm);
    font-size: 14px;
  }
  .btn {
    font-size: 14px;
    padding: 10px 22px;
  }
  .alternate-content h3 {
    font-size: 18px;
  }
  .creative-card h4 {
    font-size: 15px;
  }
}

/* roulang page: category2 */
:root {
            --color-primary: #2D2A26;
            --color-accent: #C89B3C;
            --color-accent-hover: #B0892F;
            --color-accent-light: rgba(200, 155, 60, 0.08);
            --color-accent-subtle: rgba(200, 155, 60, 0.16);
            --color-accent-strong: rgba(200, 155, 60, 0.24);
            --color-bg: #F7F5F0;
            --color-text: #333333;
            --color-text-secondary: #666666;
            --color-text-muted: #999999;
            --color-border: #E5E2DA;
            --color-white: #FFFFFF;
            --color-dark-bg: #2D2A26;
            --color-dark-text: #E8E6E1;
            --color-dark-muted: #A8A49C;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', Georgia, serif;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 40px;
            --spacing-xxl: 64px;
            --spacing-xxxl: 80px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
            --header-brand-h: 64px;
            --header-nav-h: 52px;
            --header-total-h: 116px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-serif);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        main {
            flex: 1 0 auto;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: none;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: var(--color-accent-hover);
        }

        a:focus,
        button:focus,
        input:focus,
        textarea:focus,
        select:focus {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        button {
            cursor: pointer;
            font-family: var(--font-sans);
            border: none;
            background: none;
            letter-spacing: 0.02em;
        }

        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--color-text);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background-color: var(--color-white);
            width: 100%;
        }

        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200, 155, 60, 0.12);
            outline: none;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-sans);
            line-height: 1.5;
            color: var(--color-primary);
            font-weight: 700;
            letter-spacing: 0.01em;
        }

        h1 {
            font-size: 36px;
            font-weight: 900;
            line-height: 1.4;
        }

        h2 {
            font-size: 26px;
            line-height: 1.5;
            font-weight: 800;
        }

        h3 {
            font-size: 19px;
            line-height: 1.55;
            font-weight: 700;
        }

        h4 {
            font-size: 16px;
            font-weight: 600;
        }

        p {
            margin-bottom: 1.2em;
        }

        p:last-child {
            margin-bottom: 0;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        .section-pad {
            padding: var(--spacing-xxl) 0;
        }

        .section-pad-sm {
            padding: var(--spacing-xl) 0;
        }

        .section-pad-xs {
            padding: var(--spacing-lg) 0;
        }

        .section-heading {
            margin-bottom: var(--spacing-xl);
            text-align: left;
        }

        .section-heading .section-tag {
            display: inline-block;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            background-color: var(--color-accent-light);
            padding: 4px 12px;
            border-radius: var(--radius-full);
            margin-bottom: var(--spacing-sm);
        }

        .section-heading h2 {
            font-size: 28px;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
        }

        .section-heading .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 780px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.03em;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            line-height: 1.4;
            cursor: pointer;
        }

        .btn-primary {
            background-color: var(--color-accent);
            color: #1A1A1A;
            border: 1px solid var(--color-accent);
        }

        .btn-primary:hover {
            background-color: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            color: #1A1A1A;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
            background-color: #9A7925;
            border-color: #9A7925;
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--color-accent);
            border: 1px solid var(--color-accent);
        }

        .btn-secondary:hover {
            background-color: var(--color-accent-light);
            color: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            transform: translateY(0);
            background-color: var(--color-accent-subtle);
        }

        .btn-white-outline {
            background-color: transparent;
            color: var(--color-white);
            border: 1px solid rgba(255, 255, 255, 0.5);
        }

        .btn-white-outline:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: var(--color-white);
            color: var(--color-white);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 15px 36px;
            font-size: 16px;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ==================== 顶部品牌行 ==================== */
        .site-header {
            background-color: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 0 rgba(0, 0, 0, 0.02);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: var(--header-brand-h);
            padding: 8px 0;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-sans);
            font-size: 22px;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 0.04em;
            transition: opacity var(--transition-fast);
        }

        .brand-logo:hover {
            opacity: 0.8;
            color: var(--color-primary);
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-accent) 0%, #A67C2E 100%);
            color: #FFFFFF;
            font-size: 18px;
            font-weight: 900;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(200, 155, 60, 0.25);
        }

        .brand-contact {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .brand-contact .contact-phone {
            font-weight: 700;
            color: var(--color-primary);
            font-size: 15px;
            letter-spacing: 0.03em;
        }

        .search-icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            color: var(--color-primary);
            border: 1px solid var(--color-border);
            background-color: var(--color-white);
            transition: all var(--transition-fast);
        }

        .search-icon-btn:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background-color: var(--color-accent-light);
        }

        /* ==================== 导航行 ==================== */
        .nav-wrap {
            border-top: 1px solid var(--color-border);
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            color: var(--color-primary);
            border: 1px solid var(--color-border);
            background-color: var(--color-white);
            transition: all var(--transition-fast);
            position: absolute;
            right: 0;
            top: -50px;
        }

        .nav-toggle:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }

        .nav-row {
            display: flex;
            align-items: center;
            gap: 4px;
            min-height: var(--header-nav-h);
            flex-wrap: wrap;
            padding: 4px 0;
        }

        .nav-link {
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.02em;
            position: relative;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 0;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform var(--transition-base);
        }

        .nav-link:hover {
            color: var(--color-accent);
            background-color: var(--color-accent-light);
        }

        .nav-link:hover::after {
            transform: scaleX(1);
        }

        .nav-link.active {
            color: var(--color-accent);
            background-color: var(--color-accent-light);
        }

        .nav-link.active::after {
            transform: scaleX(1);
        }

        /* ==================== 分类页 Header ==================== */
        .page-header {
            background-color: var(--color-dark-bg);
            background-image: linear-gradient(rgba(45, 42, 38, 0.85), rgba(45, 42, 38, 0.92)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 40%;
            padding: var(--spacing-xxl) 0 var(--spacing-xl);
            color: var(--color-dark-text);
            position: relative;
        }

        .page-header .container {
            position: relative;
            z-index: 1;
        }

        .page-header .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-dark-muted);
            margin-bottom: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .page-header .breadcrumb a {
            color: var(--color-dark-muted);
            transition: color var(--transition-fast);
        }

        .page-header .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .page-header .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.25);
        }

        .page-header .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 600;
        }

        .page-header h1 {
            color: var(--color-white);
            font-size: 36px;
            font-weight: 900;
            letter-spacing: 0.02em;
            margin-bottom: var(--spacing-md);
        }

        .page-header .page-header-desc {
            font-size: 17px;
            color: var(--color-dark-text);
            opacity: 0.85;
            max-width: 700px;
            line-height: 1.8;
        }

        .page-header .page-tag {
            display: inline-block;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-accent);
            background-color: rgba(200, 155, 60, 0.15);
            border: 1px solid rgba(200, 155, 60, 0.3);
            padding: 4px 14px;
            border-radius: var(--radius-full);
            margin-bottom: var(--spacing-md);
        }

        /* ==================== 卡片 ==================== */
        .card-grid {
            display: grid;
            gap: var(--spacing-lg);
        }

        .card-grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }

        .card-grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .card-grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .card {
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-accent-subtle);
        }

        .card-img-top {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-md);
            background-color: var(--color-bg);
        }

        .card h3 {
            font-size: 19px;
            margin-bottom: var(--spacing-sm);
        }

        .card .card-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

        .card .card-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: var(--spacing-sm);
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            transition: color var(--transition-fast);
        }

        .card-link:hover {
            color: var(--color-accent-hover);
        }

        .card-link .arrow {
            transition: transform var(--transition-fast);
        }

        .card-link:hover .arrow {
            transform: translateX(4px);
        }

        /* ==================== 标签/徽章 ==================== */
        .badge {
            display: inline-block;
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 3px 12px;
            border-radius: var(--radius-full);
            background-color: var(--color-accent-light);
            color: var(--color-accent);
            white-space: nowrap;
        }

        .badge-outline {
            background-color: transparent;
            border: 1px solid var(--color-accent);
            color: var(--color-accent);
        }

        .badge-dark {
            background-color: rgba(45, 42, 38, 0.08);
            color: var(--color-primary);
        }

        /* ==================== 数据条 ==================== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            background-color: var(--color-dark-bg);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            color: var(--color-dark-text);
        }

        .stat-item {
            text-align: center;
        }

        .stat-item .stat-number {
            font-family: var(--font-sans);
            font-size: 36px;
            font-weight: 900;
            color: var(--color-accent);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .stat-item .stat-label {
            font-family: var(--font-sans);
            font-size: 14px;
            color: var(--color-dark-muted);
            margin-top: var(--spacing-xs);
        }

        /* ==================== 列表 ==================== */
        .feature-list {
            list-style: none;
            padding: 0;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-sm);
            line-height: 1.75;
        }

        .feature-list li::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--color-accent);
            margin-top: 10px;
            flex-shrink: 0;
        }

        .check-list {
            list-style: none;
            padding: 0;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--color-text);
            margin-bottom: var(--spacing-sm);
            line-height: 1.75;
        }

        .check-list li::before {
            content: '✓';
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background-color: var(--color-accent-light);
            color: var(--color-accent);
            font-size: 12px;
            font-weight: 700;
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ==================== 流程 ==================== */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-md);
            position: relative;
        }

        .process-step {
            text-align: center;
            position: relative;
        }

        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: var(--color-white);
            border: 2px solid var(--color-accent);
            color: var(--color-accent);
            font-family: var(--font-sans);
            font-size: 18px;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
            transition: all var(--transition-fast);
        }

        .process-step:hover .step-num {
            background-color: var(--color-accent);
            color: #1A1A1A;
        }

        .process-step h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
        }

        .process-step p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ==================== FAQ ==================== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .faq-item {
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--color-accent-subtle);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            padding: var(--spacing-md) var(--spacing-lg);
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            text-align: left;
            background: none;
            border: none;
            cursor: pointer;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: var(--color-accent-light);
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            transition: transform var(--transition-base);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 var(--spacing-lg);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 var(--spacing-lg) var(--spacing-md);
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

        /* ==================== CTA ==================== */
        .cta-block {
            background-color: var(--color-dark-bg);
            background-image: linear-gradient(rgba(45, 42, 38, 0.9), rgba(45, 42, 38, 0.93)), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-lg);
            padding: var(--spacing-xxl);
            text-align: center;
            color: var(--color-dark-text);
        }

        .cta-block h2 {
            color: var(--color-white);
            font-size: 28px;
            margin-bottom: var(--spacing-sm);
        }

        .cta-block p {
            color: var(--color-dark-muted);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto var(--spacing-lg);
            line-height: 1.8;
        }

        .cta-block .btn-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }

        /* ==================== 相关推荐 ==================== */
        .related-section {
            background-color: var(--color-white);
            border-top: 1px solid var(--color-border);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .related-card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-accent-subtle);
        }

        .related-card h3 {
            font-size: 17px;
            margin-bottom: var(--spacing-sm);
        }

        .related-card .rel-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: var(--spacing-sm);
        }

        .related-card .rel-link {
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
        }

        .related-card .rel-link:hover {
            color: var(--color-accent-hover);
        }

        /* ==================== 页脚 ==================== */
        .site-footer {
            background-color: var(--color-dark-bg);
            color: var(--color-dark-text);
            padding: var(--spacing-xxl) 0 0;
            margin-top: auto;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr 1fr;
            gap: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-dark-muted);
            line-height: 1.7;
            max-width: 300px;
            margin-top: var(--spacing-md);
        }

        .footer-logo {
            color: var(--color-white);
            font-size: 20px;
        }

        .footer-logo .logo-mark {
            background: linear-gradient(135deg, var(--color-accent) 0%, #B0892F 100%);
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links h4 {
            color: var(--color-white);
            font-size: 15px;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            font-family: var(--font-sans);
        }

        .footer-links a {
            color: var(--color-dark-muted);
            font-size: 14px;
            transition: color var(--transition-fast);
            font-family: var(--font-sans);
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-contact h4 {
            color: var(--color-white);
            font-size: 15px;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            font-family: var(--font-sans);
        }

        .footer-contact p {
            font-size: 14px;
            color: var(--color-dark-muted);
            line-height: 1.7;
            margin-bottom: 4px;
            font-family: var(--font-sans);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            padding: var(--spacing-lg) 0;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-dark-muted);
        }

        .footer-copy span {
            font-size: 13px;
        }

        .beian {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
        }

        .beian a {
            color: var(--color-dark-muted);
            font-size: 13px;
        }

        .beian a:hover {
            color: var(--color-accent);
        }

        /* ==================== 响应式 ==================== */
        @media (max-width: 1024px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }

            .process-flow {
                grid-template-columns: repeat(3, 1fr);
                gap: var(--spacing-lg);
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-lg);
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-brand-h: 56px;
                --header-nav-h: auto;
            }

            .brand-row {
                min-height: var(--header-brand-h);
                padding: 6px 0;
            }

            .brand-logo {
                font-size: 18px;
                gap: 8px;
            }

            .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }

            .brand-contact {
                gap: var(--spacing-sm);
                font-size: 11px;
            }

            .brand-contact .contact-phone {
                font-size: 13px;
            }

            .search-icon-btn {
                width: 32px;
                height: 32px;
            }

            .nav-wrap {
                position: relative;
            }

            .nav-toggle {
                display: inline-flex;
                position: absolute;
                right: 20px;
                top: 6px;
                z-index: 10;
            }

            .nav-row {
                display: none;
                flex-direction: column;
                align-items: stretch;
                padding: var(--spacing-sm) 0 var(--spacing-md);
                gap: 2px;
            }

            .nav-row.open {
                display: flex;
            }

            .nav-link {
                display: block;
                padding: 10px 16px;
                font-size: 15px;
                border-radius: var(--radius-sm);
                text-align: left;
            }

            .nav-link::after {
                display: none;
            }

            .nav-link.active {
                background-color: var(--color-accent-light);
                border-left: 3px solid var(--color-accent);
            }

            h1 {
                font-size: 28px;
            }

            .section-heading h2 {
                font-size: 22px;
            }

            .page-header {
                padding: var(--spacing-xl) 0 var(--spacing-lg);
            }

            .page-header h1 {
                font-size: 27px;
            }

            .page-header .page-header-desc {
                font-size: 15px;
            }

            .card-grid-2,
            .card-grid-3,
            .card-grid-4 {
                grid-template-columns: 1fr;
            }

            .process-flow {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

            .stats-bar {
                grid-template-columns: 1fr 1fr;
                padding: var(--spacing-lg);
                gap: var(--spacing-md);
            }

            .stat-item .stat-number {
                font-size: 28px;
            }

            .cta-block {
                padding: var(--spacing-xl) var(--spacing-lg);
            }

            .cta-block h2 {
                font-size: 22px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: var(--spacing-sm);
            }

            .beian {
                justify-content: center;
                text-align: center;
            }

            .btn-lg {
                padding: 12px 24px;
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .brand-row {
                flex-wrap: wrap;
                gap: var(--spacing-xs);
            }

            .brand-contact {
                width: 100%;
                justify-content: space-between;
                font-size: 10px;
            }

            .brand-contact .contact-phone {
                font-size: 12px;
            }

            .stats-bar {
                grid-template-columns: 1fr 1fr;
                padding: var(--spacing-md);
                gap: var(--spacing-sm);
            }

            .stat-item .stat-number {
                font-size: 22px;
            }

            .stat-item .stat-label {
                font-size: 12px;
            }

            .cta-block .btn-group {
                flex-direction: column;
                width: 100%;
            }

            .cta-block .btn {
                width: 100%;
            }

            .section-pad {
                padding: var(--spacing-xl) 0;
            }

            .section-heading h2 {
                font-size: 20px;
            }

            .card {
                padding: var(--spacing-md);
            }

            .card-img-top {
                height: 160px;
            }

            .faq-question {
                font-size: 14px;
                padding: var(--spacing-sm) var(--spacing-md);
            }

            .faq-answer {
                padding: 0 var(--spacing-md);
            }

            .faq-item.open .faq-answer {
                padding: 0 var(--spacing-md) var(--spacing-sm);
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #2D2A26;
            --color-accent: #C89B3C;
            --color-accent-hover: #B0892F;
            --color-accent-light: rgba(200, 155, 60, 0.08);
            --color-accent-subtle: rgba(200, 155, 60, 0.16);
            --color-bg: #F7F5F0;
            --color-text: #333333;
            --color-text-secondary: #666666;
            --color-text-muted: #999999;
            --color-border: #E5E2DA;
            --color-white: #FFFFFF;
            --color-dark-bg: #2D2A26;
            --color-dark-text: #E8E6E1;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', Georgia, serif;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 40px;
            --spacing-xxl: 64px;
            --spacing-xxxl: 80px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-serif);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: none;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: var(--color-accent-hover);
        }

        a:focus,
        button:focus,
        input:focus,
        textarea:focus,
        select:focus {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        button {
            cursor: pointer;
            font-family: var(--font-sans);
            border: none;
            background: none;
            letter-spacing: 0.02em;
        }

        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--color-text);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background-color: var(--color-white);
            width: 100%;
        }

        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200, 155, 60, 0.12);
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        .section-pad {
            padding: var(--spacing-xxl) 0;
        }

        .section-pad-sm {
            padding: var(--spacing-xl) 0;
        }

        .section-heading {
            margin-bottom: var(--spacing-xl);
            text-align: left;
        }

        .section-heading .section-tag {
            display: inline-block;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            background-color: var(--color-accent-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: var(--spacing-sm);
        }

        .section-heading h2 {
            font-family: var(--font-sans);
            font-size: 28px;
            font-weight: 800;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            line-height: 1.45;
        }

        .section-heading .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 780px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.03em;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            line-height: 1.4;
        }

        .btn-primary {
            background-color: var(--color-accent);
            color: #1A1A1A;
            border: 1px solid var(--color-accent);
        }

        .btn-primary:hover {
            background-color: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            color: #1A1A1A;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--color-accent);
            border: 1px solid var(--color-accent);
        }

        .btn-secondary:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent);
            color: var(--color-accent-hover);
            transform: translateY(-1px);
        }

        .btn-lg {
            font-size: 16px;
            padding: 14px 36px;
        }

        .btn-block {
            width: 100%;
        }

        /* ========== Header ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: var(--color-white);
            box-shadow: var(--shadow-sm);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--color-primary);
            font-family: var(--font-sans);
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.04em;
            transition: opacity var(--transition-fast);
        }

        .brand-logo:hover {
            opacity: 0.82;
            color: var(--color-primary);
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: var(--color-accent);
            color: #1A1A1A;
            font-size: 20px;
            font-weight: 900;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }

        .brand-contact {
            display: flex;
            align-items: center;
            gap: 12px;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        .brand-contact .contact-phone {
            font-weight: 700;
            color: var(--color-primary);
            font-size: 15px;
            letter-spacing: 0.02em;
        }

        .search-icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            color: var(--color-text-secondary);
            transition: background-color var(--transition-fast), color var(--transition-fast);
        }

        .search-icon-btn:hover {
            background-color: var(--color-accent-light);
            color: var(--color-accent);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            border-radius: var(--radius-sm);
            transition: background-color var(--transition-fast);
        }

        .nav-toggle:hover {
            background-color: var(--color-accent-light);
        }

        .nav-row {
            display: flex;
            align-items: center;
            gap: 4px;
            height: 50px;
            overflow-x: auto;
            overflow-y: hidden;
            scrollbar-width: none;
            -ms-overflow-style: none;
            white-space: nowrap;
        }

        .nav-row::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            height: 100%;
            padding: 0 14px;
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-secondary);
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast);
            border-bottom: 2px solid transparent;
            flex-shrink: 0;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--color-accent);
            transition: width var(--transition-base);
        }

        .nav-link:hover {
            color: var(--color-primary);
        }

        .nav-link:hover::after {
            width: 70%;
        }

        .nav-link.active {
            color: var(--color-accent);
            border-bottom-color: var(--color-accent);
        }

        .nav-link.active::after {
            width: 70%;
        }

        /* ========== 分类页 Banner ========== */
        .category-banner {
            position: relative;
            padding: var(--spacing-xxxl) 0 var(--spacing-xl);
            background-color: var(--color-primary);
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
        }

        .category-banner .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: var(--spacing-lg);
        }

        .breadcrumb a {
            color: var(--color-accent);
        }

        .breadcrumb a:hover {
            color: var(--color-accent-hover);
        }

        .breadcrumb span {
            color: var(--color-text-muted);
        }

        .category-banner h1 {
            font-family: var(--font-sans);
            font-size: 38px;
            font-weight: 900;
            color: var(--color-white);
            margin-bottom: var(--spacing-md);
            line-height: 1.4;
            letter-spacing: 0.02em;
        }

        .category-banner .banner-sub {
            font-size: 17px;
            color: var(--color-dark-text);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: var(--spacing-lg);
        }

        .banner-stats {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xl);
            margin-top: var(--spacing-lg);
        }

        .banner-stat {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .banner-stat .stat-num {
            font-family: var(--font-sans);
            font-size: 32px;
            font-weight: 900;
            color: var(--color-accent);
            line-height: 1.2;
        }

        .banner-stat .stat-label {
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-dark-text);
            letter-spacing: 0.04em;
        }

        /* ========== 核心卖点 ========== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
        }

        .feature-card {
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background-color: var(--color-accent-light);
            border-radius: var(--radius-md);
            color: var(--color-accent);
            margin-bottom: var(--spacing-md);
            font-size: 20px;
            font-weight: 700;
            font-family: var(--font-sans);
        }

        .feature-card h3 {
            font-family: var(--font-sans);
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            line-height: 1.5;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ========== 表格+卡片混合区 ========== */
        .mixed-section {
            background-color: var(--color-white);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .mixed-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: var(--spacing-xl);
            align-items: start;
        }

        .mixed-cards {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .mixed-card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            gap: var(--spacing-md);
            align-items: flex-start;
        }

        .mixed-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .mixed-card .mc-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background-color: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-sans);
            font-weight: 800;
            font-size: 16px;
            color: var(--color-accent);
        }

        .mixed-card h4 {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
            line-height: 1.5;
        }

        .mixed-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .table-wrapper {
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .table-header {
            background-color: var(--color-primary);
            color: var(--color-white);
            padding: var(--spacing-md) var(--spacing-lg);
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 700;
            letter-spacing: 0.04em;
        }

        .service-table {
            width: 100%;
            border-collapse: collapse;
        }

        .service-table th {
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            text-align: left;
            padding: 12px 16px;
            border-bottom: 2px solid var(--color-border);
            background-color: var(--color-bg);
            letter-spacing: 0.04em;
        }

        .service-table td {
            font-size: 14px;
            color: var(--color-text-secondary);
            padding: 12px 16px;
            border-bottom: 1px solid var(--color-border);
            vertical-align: top;
            line-height: 1.7;
        }

        .service-table tr:last-child td {
            border-bottom: none;
        }

        .service-table .td-highlight {
            color: var(--color-accent);
            font-weight: 700;
            font-family: var(--font-sans);
        }

        /* ========== 流程步骤 ========== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-md);
        }

        .process-step {
            text-align: left;
            position: relative;
            padding-top: 0;
        }

        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: var(--color-accent);
            color: #1A1A1A;
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
        }

        .process-step h4 {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
            line-height: 1.5;
        }

        .process-step p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 适用场景 ========== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
        }

        .scene-card {
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            gap: 0;
        }

        .scene-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .scene-card img {
            width: 200px;
            height: 100%;
            object-fit: cover;
            flex-shrink: 0;
        }

        .scene-card .scene-body {
            padding: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .scene-card h3 {
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            line-height: 1.5;
        }

        .scene-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            max-width: 800px;
        }

        .faq-item {
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--color-accent-subtle);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 16px 20px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 700;
            color: var(--color-primary);
            text-align: left;
            transition: color var(--transition-fast);
            gap: 12px;
            line-height: 1.5;
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: var(--color-accent-light);
            color: var(--color-accent);
            font-size: 16px;
            font-weight: 700;
            transition: transform var(--transition-base);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ========== CTA ========== */
        .cta-section {
            background-color: var(--color-primary);
            padding: var(--spacing-xxl) 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-xl);
            flex-wrap: wrap;
        }

        .cta-section h2 {
            font-family: var(--font-sans);
            font-size: 28px;
            font-weight: 800;
            color: var(--color-white);
            margin-bottom: var(--spacing-sm);
            line-height: 1.45;
        }

        .cta-section p {
            font-size: 15px;
            color: var(--color-dark-text);
            line-height: 1.8;
            margin-bottom: 0;
            max-width: 600px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background-color: var(--color-dark-bg);
            color: var(--color-dark-text);
            padding: var(--spacing-xxl) 0 var(--spacing-md);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }

        .footer-brand .brand-logo {
            color: var(--color-white);
            margin-bottom: var(--spacing-md);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-dark-text);
            line-height: 1.8;
            opacity: 0.8;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links h4 {
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.04em;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--color-dark-text);
            opacity: 0.8;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--color-accent);
            opacity: 1;
        }

        .footer-contact h4 {
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.04em;
        }

        .footer-contact p {
            font-size: 13px;
            color: var(--color-dark-text);
            opacity: 0.8;
            margin-bottom: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--spacing-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .footer-copy {
            font-size: 13px;
            color: var(--color-dark-text);
            opacity: 0.7;
        }

        .beian {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: var(--color-dark-text);
            opacity: 0.7;
        }

        .beian a {
            color: var(--color-dark-text);
            opacity: 0.9;
            font-size: 12px;
        }

        .beian a:hover {
            color: var(--color-accent);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .mixed-layout {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .process-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: var(--spacing-lg);
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
            }

            .scene-card {
                flex-direction: column;
            }

            .scene-card img {
                width: 100%;
                height: 180px;
            }
        }

        @media (max-width: 768px) {
            .brand-row {
                height: 56px;
            }

            .brand-contact .contact-phone {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .nav-row {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: var(--color-white);
                flex-direction: column;
                align-items: stretch;
                height: auto;
                padding: var(--spacing-sm) 0;
                box-shadow: var(--shadow-md);
                border-top: 1px solid var(--color-border);
                z-index: 999;
            }

            .nav-row.open {
                display: flex;
            }

            .nav-link {
                height: 44px;
                padding: 0 20px;
                border-bottom: none;
                justify-content: flex-start;
                width: 100%;
            }

            .nav-link::after {
                display: none;
            }

            .nav-link.active {
                background-color: var(--color-accent-light);
                border-bottom: none;
            }

            .category-banner h1 {
                font-size: 28px;
            }

            .banner-stats {
                gap: var(--spacing-lg);
            }

            .banner-stat .stat-num {
                font-size: 24px;
            }

            .feature-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }

            .scene-grid {
                grid-template-columns: 1fr;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-sm);
            }

            .section-heading h2 {
                font-size: 22px;
            }
        }

        @media (max-width: 576px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }

            .process-grid {
                grid-template-columns: 1fr;
            }

            .mixed-card {
                flex-direction: column;
                align-items: flex-start;
            }

            .category-banner h1 {
                font-size: 24px;
            }

            .category-banner .banner-sub {
                font-size: 15px;
            }

            .banner-stats {
                gap: var(--spacing-md);
            }

            .banner-stat .stat-num {
                font-size: 20px;
            }

            .btn-lg {
                font-size: 15px;
                padding: 12px 24px;
            }

            .table-wrapper {
                overflow-x: auto;
            }

            .service-table {
                min-width: 500px;
            }

            .section-pad {
                padding: var(--spacing-xl) 0;
            }

            .cta-section .container {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category5 */
:root {
 --color-primary: #2D2A26;
 --color-accent: #C89B3C;
 --color-accent-hover: #B0892F;
 --color-accent-light: rgba(200, 155, 60, 0.08);
 --color-accent-subtle: rgba(200, 155, 60, 0.16);
 --color-bg: #F7F5F0;
 --color-text: #333333;
 --color-text-secondary: #666666;
 --color-text-muted: #999999;
 --color-border: #E5E2DA;
 --color-white: #FFFFFF;
 --color-dark-bg: #2D2A26;
 --color-dark-text: #E8E6E1;
 --radius-sm: 6px;
 --radius-md: 8px;
 --radius-lg: 12px;
 --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
 --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
 --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
 --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
 --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', Georgia, serif;
 --spacing-xs: 4px;
 --spacing-sm: 8px;
 --spacing-md: 16px;
 --spacing-lg: 24px;
 --spacing-xl: 40px;
 --spacing-xxl: 64px;
 --spacing-xxxl: 80px;
 --container-max: 1200px;
 --transition-fast: 0.2s ease;
 --transition-base: 0.3s ease;
 --transition-slow: 0.45s ease;
 }
 html {
 scroll-behavior: smooth;
 -webkit-text-size-adjust: 100%;
 -webkit-font-smoothing: antialiased;
 -moz-osx-font-smoothing: grayscale;
 }
 body {
 font-family: var(--font-serif);
 font-size: 16px;
 line-height: 1.85;
 color: var(--color-text);
 background-color: var(--color-bg);
 overflow-x: hidden;
 min-height: 100vh;
 margin: 0;
 }
 img {
 max-width: 100%;
 height: auto;
 display: block;
 border: none;
 }
 a {
 color: var(--color-accent);
 text-decoration: none;
 transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
 }
 a:hover {
 color: var(--color-accent-hover);
 }
 a:focus, button:focus, input:focus, textarea:focus, select:focus {
 outline: 2px solid var(--color-accent);
 outline-offset: 2px;
 }
 button {
 cursor: pointer;
 font-family: var(--font-sans);
 border: none;
 background: none;
 letter-spacing: 0.02em;
 }
 input, textarea, select {
 font-family: var(--font-sans);
 font-size: 15px;
 color: var(--color-text);
 border: 1px solid var(--color-border);
 border-radius: var(--radius-sm);
 padding: 10px 14px;
 transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
 background-color: var(--color-white);
 width: 100%;
 }
 input:focus, textarea:focus, select:focus {
 border-color: var(--color-accent);
 box-shadow: 0 0 0 3px rgba(200, 155, 60, 0.12);
 outline: none;
 }
 .container {
 max-width: var(--container-max);
 margin: 0 auto;
 padding: 0 20px;
 width: 100%;
 }
 .section-pad {
 padding: var(--spacing-xxl) 0;
 }
 .section-pad-sm {
 padding: var(--spacing-xl) 0;
 }
 .section-heading {
 margin-bottom: var(--spacing-xl);
 text-align: left;
 }
 .section-heading .section-tag {
 display: inline-block;
 font-family: var(--font-sans);
 font-size: 13px;
 font-weight: 600;
 letter-spacing: 0.08em;
 text-transform: uppercase;
 color: var(--color-accent);
 background-color: var(--color-accent-light);
 padding: 4px 12px;
 border-radius: 20px;
 margin-bottom: var(--spacing-sm);
 }
 .section-heading h2 {
 font-family: var(--font-sans);
 font-size: 28px;
 color: var(--color-primary);
 margin-bottom: var(--spacing-sm);
 margin-top: 0;
 font-weight: 700;
 line-height: 1.4;
 }
 .section-heading .section-desc {
 font-size: 16px;
 color: var(--color-text-secondary);
 max-width: 780px;
 line-height: 1.8;
 margin-bottom: 0;
 }
 .btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 gap: 8px;
 font-family: var(--font-sans);
 font-size: 15px;
 font-weight: 600;
 letter-spacing: 0.03em;
 padding: 12px 28px;
 border-radius: var(--radius-sm);
 transition: all var(--transition-fast);
 white-space: nowrap;
 line-height: 1.4;
 }
 .btn-primary {
 background-color: var(--color-accent);
 color: #1A1A1A;
 border: 1px solid var(--color-accent);
 }
 .btn-primary:hover {
 background-color: var(--color-accent-hover);
 border-color: var(--color-accent-hover);
 color: #1A1A1A;
 transform: translateY(-1px);
 box-shadow: var(--shadow-sm);
 }
 .btn-primary:active {
 background-color: var(--color-accent-hover);
 border-color: var(--color-accent-hover);
 transform: translateY(0);
 box-shadow: none;
 }
 .btn-outline {
 background-color: transparent;
 color: var(--color-accent);
 border: 1px solid var(--color-accent);
 }
 .btn-outline:hover {
 background-color: var(--color-accent-light);
 color: var(--color-accent-hover);
 border-color: var(--color-accent-hover);
 transform: translateY(-1px);
 }
 .btn-outline:active {
 background-color: var(--color-accent-subtle);
 transform: translateY(0);
 }
 .btn-lg {
 font-size: 16px;
 padding: 14px 32px;
 }
 .badge {
 display: inline-block;
 font-family: var(--font-sans);
 font-size: 12px;
 font-weight: 600;
 padding: 3px 10px;
 border-radius: 20px;
 background-color: var(--color-accent-light);
 color: var(--color-accent);
 letter-spacing: 0.05em;
 }
 /* ========== 页头导航 ========== */
 .site-header {
 background-color: var(--color-white);
 border-bottom: 1px solid var(--color-border);
 position: sticky;
 top: 0;
 z-index: 100;
 }
 .brand-row {
 display: flex;
 align-items: center;
 justify-content: space-between;
 padding: 14px 0;
 }
 .brand-logo {
 display: flex;
 align-items: center;
 gap: 10px;
 font-family: var(--font-sans);
 font-size: 20px;
 font-weight: 700;
 color: var(--color-primary);
 letter-spacing: 0.04em;
 }
 .brand-logo:hover {
 color: var(--color-accent);
 }
 .logo-mark {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 width: 36px;
 height: 36px;
 background-color: var(--color-primary);
 color: var(--color-accent);
 font-size: 18px;
 font-weight: 700;
 border-radius: var(--radius-sm);
 }
 .brand-contact {
 display: flex;
 align-items: center;
 gap: 14px;
 font-family: var(--font-sans);
 font-size: 13px;
 color: var(--color-text-secondary);
 }
 .contact-phone {
 font-weight: 700;
 color: var(--color-primary);
 font-size: 15px;
 letter-spacing: 0.03em;
 }
 .search-icon-btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 width: 36px;
 height: 36px;
 border-radius: 50%;
 color: var(--color-text-secondary);
 background-color: var(--color-bg);
 transition: all var(--transition-fast);
 }
 .search-icon-btn:hover {
 background-color: var(--color-accent-light);
 color: var(--color-accent);
 }
 .nav-row {
 display: flex;
 align-items: center;
 gap: 4px;
 padding: 8px 0 10px;
 flex-wrap: wrap;
 border-top: 1px solid var(--color-border);
 }
 .nav-link {
 font-family: var(--font-sans);
 font-size: 14px;
 font-weight: 500;
 color: var(--color-text-secondary);
 padding: 6px 14px;
 border-radius: var(--radius-sm);
 position: relative;
 letter-spacing: 0.02em;
 transition: color var(--transition-fast), background-color var(--transition-fast);
 white-space: nowrap;
 }
 .nav-link::after {
 content: "";
 position: absolute;
 bottom: 0;
 left: 50%;
 transform: translateX(-50%);
 width: 0;
 height: 2px;
 background-color: var(--color-accent);
 transition: width var(--transition-base);
 border-radius: 2px;
 }
 .nav-link:hover {
 color: var(--color-accent);
 background-color: var(--color-accent-light);
 }
 .nav-link:hover::after {
 width: 60%;
 }
 .nav-link.active {
 color: var(--color-accent);
 font-weight: 600;
 background-color: var(--color-accent-light);
 }
 .nav-link.active::after {
 width: 60%;
 }
 .nav-toggle {
 display: none;
 align-items: center;
 justify-content: center;
 width: 40px;
 height: 40px;
 border-radius: var(--radius-sm);
 border: 1px solid var(--color-border);
 color: var(--color-primary);
 background-color: var(--color-white);
 }
 /* ========== 分类页 Banner ========== */
 .page-banner {
 position: relative;
 background-image: url('/assets/images/backpic/back-2.webp');
 background-size: cover;
 background-position: center;
 padding: var(--spacing-xxxl) 0;
 color: var(--color-white);
 }
 .page-banner::before {
 content: "";
 position: absolute;
 inset: 0;
 background: linear-gradient(135deg, rgba(45, 42, 38, 0.88) 0%, rgba(45, 42, 38, 0.72) 55%, rgba(200, 155, 60, 0.38) 100%);
 }
 .page-banner .container {
 position: relative;
 z-index: 2;
 }
 .breadcrumb {
 display: flex;
 align-items: center;
 gap: 6px;
 font-family: var(--font-sans);
 font-size: 13px;
 color: rgba(255, 255, 255, 0.75);
 margin-bottom: var(--spacing-lg);
 }
 .breadcrumb a {
 color: rgba(255, 255, 255, 0.75);
 }
 .breadcrumb a:hover {
 color: var(--color-accent);
 }
 .breadcrumb .sep {
 color: rgba(255, 255, 255, 0.45);
 }
 .breadcrumb .current {
 color: var(--color-accent);
 font-weight: 500;
 }
 .page-banner h1 {
 font-family: var(--font-sans);
 font-size: 40px;
 font-weight: 900;
 color: var(--color-white);
 margin: 0 0 var(--spacing-md);
 letter-spacing: 0.02em;
 line-height: 1.3;
 }
 .page-banner .banner-sub {
 font-size: 18px;
 color: rgba(255, 255, 255, 0.88);
 max-width: 680px;
 line-height: 1.8;
 margin-bottom: var(--spacing-lg);
 }
 .banner-actions {
 display: flex;
 align-items: center;
 gap: 14px;
 flex-wrap: wrap;
 }
 .banner-badges {
 display: flex;
 align-items: center;
 gap: 12px;
 flex-wrap: wrap;
 margin-top: var(--spacing-lg);
 }
 .banner-badges span {
 font-family: var(--font-sans);
 font-size: 13px;
 color: rgba(255, 255, 255, 0.7);
 display: flex;
 align-items: center;
 gap: 6px;
 }
 .banner-badges svg {
 color: var(--color-accent);
 }
 /* ========== 大图+描述列表区 ========== */
 .stage-overview {
 display: grid;
 grid-template-columns: 1fr 1fr;
 gap: var(--spacing-xxl);
 align-items: center;
 }
 .stage-overview-image {
 border-radius: var(--radius-lg);
 overflow: hidden;
 box-shadow: var(--shadow-lg);
 position: relative;
 }
 .stage-overview-image img {
 width: 100%;
 height: 100%;
 object-fit: cover;
 min-height: 400px;
 }
 .stage-overview-content h2 {
 font-family: var(--font-sans);
 font-size: 28px;
 color: var(--color-primary);
 margin: 0 0 var(--spacing-md);
 font-weight: 700;
 line-height: 1.4;
 }
 .stage-overview-content .lead {
 font-size: 16px;
 color: var(--color-text-secondary);
 line-height: 1.85;
 margin-bottom: var(--spacing-xl);
 }
 .spec-list {
 margin: 0;
 padding: 0;
 list-style: none;
 display: grid;
 grid-template-columns: 1fr 1fr;
 gap: var(--spacing-md);
 }
 .spec-list li {
 display: flex;
 flex-direction: column;
 gap: 2px;
 padding: var(--spacing-md);
 background-color: var(--color-white);
 border: 1px solid var(--color-border);
 border-radius: var(--radius-md);
 transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
 }
 .spec-list li:hover {
 box-shadow: var(--shadow-sm);
 border-color: var(--color-accent-subtle);
 }
 .spec-list .spec-label {
 font-family: var(--font-sans);
 font-size: 13px;
 color: var(--color-text-muted);
 letter-spacing: 0.03em;
 }
 .spec-list .spec-value {
 font-family: var(--font-sans);
 font-size: 16px;
 font-weight: 700;
 color: var(--color-primary);
 }
 /* ========== 舞台类型卡片 ========== */
 .stage-types-grid {
 display: grid;
 grid-template-columns: repeat(2, 1fr);
 gap: var(--spacing-lg);
 }
 .stage-type-card {
 background-color: var(--color-white);
 border: 1px solid var(--color-border);
 border-radius: var(--radius-lg);
 overflow: hidden;
 display: flex;
 flex-direction: column;
 transition: transform var(--transition-base), box-shadow var(--transition-base);
 }
 .stage-type-card:hover {
 transform: translateY(-4px);
 box-shadow: var(--shadow-md);
 }
 .stage-type-card .card-image {
 position: relative;
 overflow: hidden;
 aspect-ratio: 16 / 9;
 }
 .stage-type-card .card-image img {
 width: 100%;
 height: 100%;
 object-fit: cover;
 transition: transform var(--transition-slow);
 }
 .stage-type-card:hover .card-image img {
 transform: scale(1.04);
 }
 .stage-type-card .card-body {
 padding: var(--spacing-lg);
 flex: 1;
 display: flex;
 flex-direction: column;
 }
 .stage-type-card h3 {
 font-family: var(--font-sans);
 font-size: 19px;
 color: var(--color-primary);
 margin: 0 0 var(--spacing-sm);
 font-weight: 700;
 }
 .stage-type-card p {
 font-size: 15px;
 color: var(--color-text-secondary);
 line-height: 1.75;
 margin: 0 0 var(--spacing-md);
 flex: 1;
 }
 .stage-type-card .card-tag {
 align-self: flex-start;
 font-family: var(--font-sans);
 font-size: 12px;
 font-weight: 600;
 color: var(--color-accent);
 background-color: var(--color-accent-light);
 padding: 4px 10px;
 border-radius: 20px;
 }
 /* ========== 灯光系统描述列表 ========== */
 .lighting-section {
 background-color: var(--color-white);
 border: 1px solid var(--color-border);
 border-radius: var(--radius-lg);
 padding: var(--spacing-xxl);
 box-shadow: var(--shadow-sm);
 }
 .lighting-grid {
 display: grid;
 grid-template-columns: 1fr 1fr;
 gap: var(--spacing-xl);
 }
 .lighting-dl {
 margin: 0;
 padding: 0;
 list-style: none;
 display: flex;
 flex-direction: column;
 gap: 0;
 }
 .lighting-dl li {
 display: flex;
 align-items: flex-start;
 gap: var(--spacing-md);
 padding: var(--spacing-md) 0;
 border-bottom: 1px solid var(--color-border);
 }
 .lighting-dl li:last-child {
 border-bottom: none;
 }
 .lighting-dl .dl-icon {
 flex-shrink: 0;
 width: 36px;
 height: 36px;
 display: flex;
 align-items: center;
 justify-content: center;
 background-color: var(--color-accent-light);
 border-radius: 50%;
 color: var(--color-accent);
 }
 .lighting-dl .dl-content h4 {
 font-family: var(--font-sans);
 font-size: 16px;
 color: var(--color-primary);
 margin: 0 0 2px;
 font-weight: 700;
 }
 .lighting-dl .dl-content p {
 font-size: 14px;
 color: var(--color-text-secondary);
 line-height: 1.7;
 margin: 0;
 }
 .lighting-showcase {
 border-radius: var(--radius-md);
 overflow: hidden;
 box-shadow: var(--shadow-md);
 }
 .lighting-showcase img {
 width: 100%;
 height: 100%;
 object-fit: cover;
 min-height: 360px;
 }
 /* ========== 技术数据 ========== */
 .stats-bar {
 background-color: var(--color-primary);
 border-radius: var(--radius-lg);
 padding: var(--spacing-xl) var(--spacing-lg);
 display: grid;
 grid-template-columns: repeat(4, 1fr);
 gap: var(--spacing-lg);
 }
 .stat-item {
 text-align: center;
 padding: var(--spacing-md);
 }
 .stat-item .stat-number {
 font-family: var(--font-sans);
 font-size: 36px;
 font-weight: 900;
 color: var(--color-accent);
 letter-spacing: 0.02em;
 line-height: 1.3;
 }
 .stat-item .stat-label {
 font-family: var(--font-sans);
 font-size: 13px;
 color: rgba(255, 255, 255, 0.72);
 margin-top: 4px;
 letter-spacing: 0.04em;
 }
 /* ========== 流程 ========== */
 .process-list {
 display: grid;
 grid-template-columns: repeat(5, 1fr);
 gap: var(--spacing-md);
 }
 .process-step {
 background-color: var(--color-white);
 border: 1px solid var(--color-border);
 border-radius: var(--radius-lg);
 padding: var(--spacing-lg);
 text-align: center;
 transition: transform var(--transition-fast), box-shadow var(--transition-fast);
 position: relative;
 }
 .process-step:hover {
 transform: translateY(-3px);
 box-shadow: var(--shadow-md);
 }
 .process-step .step-num {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 width: 40px;
 height: 40px;
 background-color: var(--color-accent);
 color: #1A1A1A;
 font-family: var(--font-sans);
 font-weight: 700;
 font-size: 16px;
 border-radius: 50%;
 margin-bottom: var(--spacing-sm);
 }
 .process-step h4 {
 font-family: var(--font-sans);
 font-size: 15px;
 color: var(--color-primary);
 margin: 0 0 4px;
 font-weight: 700;
 }
 .process-step p {
 font-size: 13px;
 color: var(--color-text-secondary);
 line-height: 1.6;
 margin: 0;
 }
 /* ========== 案例展示 ========== */
 .case-grid {
 display: grid;
 grid-template-columns: repeat(3, 1fr);
 gap: var(--spacing-lg);
 }
 .case-card {
 background-color: var(--color-white);
 border: 1px solid var(--color-border);
 border-radius: var(--radius-lg);
 overflow: hidden;
 transition: transform var(--transition-base), box-shadow var(--transition-base);
 }
 .case-card:hover {
 transform: translateY(-4px);
 box-shadow: var(--shadow-md);
 }
 .case-card .case-image {
 aspect-ratio: 16 / 10;
 overflow: hidden;
 }
 .case-card .case-image img {
 width: 100%;
 height: 100%;
 object-fit: cover;
 transition: transform var(--transition-slow);
 }
 .case-card:hover .case-image img {
 transform: scale(1.04);
 }
 .case-card .case-body {
 padding: var(--spacing-md) var(--spacing-lg);
 }
 .case-card .case-title {
 font-family: var(--font-sans);
 font-size: 16px;
 font-weight: 700;
 color: var(--color-primary);
 margin: 0 0 4px;
 }
 .case-card .case-meta {
 font-size: 13px;
 color: var(--color-text-muted);
 }
 /* ========== FAQ ========== */
 .faq-list {
 border-top: 1px solid var(--color-border);
 }
 .faq-item {
 border-bottom: 1px solid var(--color-border);
 }
 .faq-question {
 width: 100%;
 display: flex;
 align-items: center;
 justify-content: space-between;
 padding: var(--spacing-lg) 0;
 font-family: var(--font-sans);
 font-size: 16px;
 font-weight: 600;
 color: var(--color-primary);
 text-align: left;
 transition: color var(--transition-fast);
 background: none;
 border: none;
 cursor: pointer;
 }
 .faq-question:hover {
 color: var(--color-accent);
 }
 .faq-question .faq-icon {
 flex-shrink: 0;
 width: 24px;
 height: 24px;
 display: flex;
 align-items: center;
 justify-content: center;
 color: var(--color-accent);
 transition: transform var(--transition-base);
 }
 .faq-question.open .faq-icon {
 transform: rotate(45deg);
 }
 .faq-answer {
 max-height: 0;
 overflow: hidden;
 transition: max-height var(--transition-slow);
 }
 .faq-answer-inner {
 padding: 0 0 var(--spacing-lg);
 font-size: 15px;
 color: var(--color-text-secondary);
 line-height: 1.8;
 }
 /* ========== CTA ========== */
 .cta-section {
 position: relative;
 background-image: url('/assets/images/backpic/back-3.webp');
 background-size: cover;
 background-position: center;
 border-radius: var(--radius-lg);
 overflow: hidden;
 padding: var(--spacing-xxl) var(--spacing-xl);
 }
 .cta-section::before {
 content: "";
 position: absolute;
 inset: 0;
 background: linear-gradient(135deg, rgba(45, 42, 38, 0.9) 0%, rgba(45, 42, 38, 0.75) 100%);
 }
 .cta-section .container {
 position: relative;
 z-index: 2;
 max-width: 700px;
 margin: 0 auto;
 text-align: center;
 }
 .cta-section h2 {
 font-family: var(--font-sans);
 font-size: 30px;
 color: var(--color-white);
 font-weight: 800;
 margin: 0 0 var(--spacing-md);
 line-height: 1.4;
 }
 .cta-section p {
 font-size: 16px;
 color: rgba(255, 255, 255, 0.82);
 line-height: 1.8;
 margin-bottom: var(--spacing-xl);
 }
 /* ========== 相关推荐 ========== */
 .related-grid {
 display: grid;
 grid-template-columns: repeat(3, 1fr);
 gap: var(--spacing-md);
 }
 .related-card {
 background-color: var(--color-white);
 border: 1px solid var(--color-border);
 border-radius: var(--radius-md);
 padding: var(--spacing-lg);
 display: flex;
 flex-direction: column;
 gap: 4px;
 transition: transform var(--transition-fast), box-shadow var(--transition-fast);
 }
 .related-card:hover {
 transform: translateY(-3px);
 box-shadow: var(--shadow-sm);
 border-color: var(--color-accent-subtle);
 }
 .related-card .related-name {
 font-family: var(--font-sans);
 font-size: 16px;
 font-weight: 700;
 color: var(--color-primary);
 }
 .related-card .related-desc {
 font-size: 13px;
 color: var(--color-text-secondary);
 line-height: 1.6;
 }
 /* ========== 页脚 ========== */
 .site-footer {
 background-color: var(--color-dark-bg);
 color: var(--color-dark-text);
 padding: var(--spacing-xxl) 0 var(--spacing-lg);
 }
 .footer-top {
 display: grid;
 grid-template-columns: 1.5fr 1fr 1.2fr 1fr;
 gap: var(--spacing-xl);
 margin-bottom: var(--spacing-xl);
 }
 .footer-brand .footer-logo {
 font-size: 22px;
 color: var(--color-white);
 }
 .footer-brand p {
 font-size: 14px;
 color: rgba(232, 230, 225, 0.75);
 line-height: 1.7;
 margin: var(--spacing-md) 0 0;
 }
 .footer-links h4, .footer-contact h4 {
 font-family: var(--font-sans);
 font-size: 14px;
 font-weight: 700;
 color: var(--color-accent);
 margin: 0 0 var(--spacing-md);
 letter-spacing: 0.04em;
 }
 .footer-links a {
 display: block;
 font-size: 13px;
 color: rgba(232, 230, 225, 0.7);
 padding: 4px 0;
 transition: color var(--transition-fast);
 }
 .footer-links a:hover {
 color: var(--color-accent);
 }
 .footer-contact p {
 font-size: 13px;
 color: rgba(232, 230, 225, 0.7);
 margin: 0 0 6px;
 }
 .footer-bottom {
 border-top: 1px solid rgba(232, 230, 225, 0.15);
 padding-top: var(--spacing-lg);
 display: flex;
 align-items: center;
 justify-content: space-between;
 flex-wrap: wrap;
 gap: var(--spacing-md);
 font-size: 13px;
 }
 .footer-copy {
 color: rgba(232, 230, 225, 0.6);
 }
 .beian {
 display: flex;
 align-items: center;
 gap: 10px;
 flex-wrap: wrap;
 color: rgba(232, 230, 225, 0.6);
 }
 .beian a {
 color: rgba(232, 230, 225, 0.6);
 }
 .beian a:hover {
 color: var(--color-accent);
 }
 /* ========== 响应式 ========== */
 @media (max-width: 1024px) {
 .stage-overview {
 grid-template-columns: 1fr;
 gap: var(--spacing-xl);
 }
 .stage-overview-image img {
 min-height: 300px;
 }
 .lighting-grid {
 grid-template-columns: 1fr;
 gap: var(--spacing-lg);
 }
 .stats-bar {
 grid-template-columns: repeat(2, 1fr);
 }
 .process-list {
 grid-template-columns: repeat(3, 1fr);
 }
 .case-grid {
 grid-template-columns: repeat(2, 1fr);
 }
 .footer-top {
 grid-template-columns: 1fr 1fr;
 }
 }
 @media (max-width: 768px) {
 .brand-row {
 flex-direction: column;
 gap: 10px;
 align-items: flex-start;
 }
 .brand-contact {
 width: 100%;
 justify-content: space-between;
 }
 .nav-toggle {
 display: inline-flex;
 }
 .nav-row {
 display: none;
 position: absolute;
 top: 100%;
 left: 0;
 right: 0;
 background-color: var(--color-white);
 border: 1px solid var(--color-border);
 border-radius: 0 0 var(--radius-md) var(--radius-md);
 box-shadow: var(--shadow-md);
 flex-direction: column;
 align-items: stretch;
 gap: 0;
 padding: var(--spacing-sm);
 z-index: 99;
 }
 .nav-row.open {
 display: flex;
 }
 .nav-link {
 text-align: left;
 padding: 10px 14px;
 display: block;
 }
 .nav-link::after {
 display: none;
 }
 .page-banner h1 {
 font-size: 30px;
 }
 .page-banner .banner-sub {
 font-size: 15px;
 }
 .spec-list {
 grid-template-columns: 1fr;
 }
 .stage-types-grid {
 grid-template-columns: 1fr;
 }
 .process-list {
 grid-template-columns: 1fr 1fr;
 }
 .case-grid {
 grid-template-columns: 1fr;
 }
 .related-grid {
 grid-template-columns: 1fr;
 }
 .stats-bar {
 grid-template-columns: 1fr 1fr;
 gap: var(--spacing-md);
 }
 .stat-item .stat-number {
 font-size: 28px;
 }
 .lighting-section {
 padding: var(--spacing-lg);
 }
 .cta-section {
 padding: var(--spacing-xl) var(--spacing-md);
 }
 .cta-section h2 {
 font-size: 24px;
 }
 .footer-top {
 grid-template-columns: 1fr;
 gap: var(--spacing-lg);
 }
 .footer-bottom {
 flex-direction: column;
 align-items: flex-start;
 }
 .section-heading h2 {
 font-size: 22px;
 }
 }
 @media (max-width: 520px) {
 .process-list {
 grid-template-columns: 1fr;
 }
 .stats-bar {
 grid-template-columns: 1fr;
 }
 .banner-actions .btn {
 width: 100%;
 }
 .page-banner h1 {
 font-size: 24px;
 }
 .stage-overview-image img {
 min-height: 220px;
 }
 }

/* roulang page: category6 */
:root {
            --color-primary: #2D2A26;
            --color-accent: #C89B3C;
            --color-accent-hover: #B0892F;
            --color-accent-light: rgba(200, 155, 60, 0.08);
            --color-accent-subtle: rgba(200, 155, 60, 0.16);
            --color-bg: #F7F5F0;
            --color-text: #333333;
            --color-text-secondary: #666666;
            --color-text-muted: #999999;
            --color-border: #E5E2DA;
            --color-white: #FFFFFF;
            --color-dark-bg: #2D2A26;
            --color-dark-text: #E8E6E1;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', Georgia, serif;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 40px;
            --spacing-xxl: 64px;
            --spacing-xxxl: 80px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-serif);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: none;
        }
        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-hover);
        }
        a:focus,
        button:focus,
        input:focus,
        textarea:focus,
        select:focus {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        button {
            cursor: pointer;
            font-family: var(--font-sans);
            border: none;
            background: none;
            letter-spacing: 0.02em;
        }
        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--color-text);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background-color: var(--color-white);
            width: 100%;
        }
        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200, 155, 60, 0.12);
            outline: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
            box-sizing: border-box;
        }
        .section-pad {
            padding: var(--spacing-xxl) 0;
        }
        .section-pad-sm {
            padding: var(--spacing-xl) 0;
        }
        .section-heading {
            margin-bottom: var(--spacing-xl);
            text-align: left;
        }
        .section-heading .section-tag {
            display: inline-block;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            background-color: var(--color-accent-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: var(--spacing-sm);
        }
        .section-heading h2 {
            font-size: 28px;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            font-family: var(--font-sans);
            font-weight: 700;
            line-height: 1.5;
            margin-top: 0;
        }
        .section-heading .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 780px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.03em;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            line-height: 1.4;
        }
        .btn-primary {
            background-color: var(--color-accent);
            color: #1A1A1A;
            border: 1px solid var(--color-accent);
        }
        .btn-primary:hover {
            background-color: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            color: #1A1A1A;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .btn-primary:active {
            background-color: #9A7930;
            border-color: #9A7930;
            transform: translateY(0);
        }
        .btn-secondary {
            background-color: transparent;
            border: 1px solid var(--color-accent);
            color: var(--color-accent);
        }
        .btn-secondary:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: translateY(-1px);
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            background-color: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 60px;
            padding: 8px 0;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-sans);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.05em;
            white-space: nowrap;
        }
        .brand-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background-color: var(--color-primary);
            color: var(--color-accent);
            font-size: 18px;
            font-weight: 900;
            flex-shrink: 0;
        }
        .brand-logo:hover {
            color: var(--color-primary);
        }
        .brand-contact {
            display: flex;
            align-items: center;
            gap: 12px;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-secondary);
        }
        .brand-contact .contact-phone {
            font-weight: 700;
            color: var(--color-primary);
            font-size: 14px;
            letter-spacing: 0.02em;
        }
        .search-icon-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
            background: var(--color-white);
        }
        .search-icon-btn:hover {
            color: var(--color-accent);
            border-color: var(--color-accent);
            background-color: var(--color-accent-light);
        }
        .nav-row {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
            padding: 6px 0 10px;
            min-height: 50px;
        }
        .nav-link {
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            position: relative;
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-base);
        }
        .nav-link:hover {
            color: var(--color-accent);
            background-color: var(--color-accent-light);
        }
        .nav-link:hover::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--color-accent);
            font-weight: 600;
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-subtle);
        }
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: var(--color-white);
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            transition: all var(--transition-fast);
        }
        .nav-toggle:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }

        /* ========== Hero Section ========== */
        .page-hero {
            background-image: linear-gradient(rgba(45, 42, 38, 0.78), rgba(45, 42, 38, 0.62)), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center 30%;
            color: var(--color-white);
            padding: var(--spacing-xxxl) 0;
            position: relative;
            overflow: hidden;
        }
        .page-hero .hero-inner {
            max-width: 800px;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: var(--color-accent);
            color: #1A1A1A;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.06em;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: var(--spacing-lg);
            text-transform: uppercase;
        }
        .page-hero h1 {
            font-family: var(--font-sans);
            font-size: 38px;
            font-weight: 900;
            line-height: 1.4;
            margin: 0 0 var(--spacing-md);
            color: var(--color-white);
            letter-spacing: 0.02em;
        }
        .page-hero .hero-desc {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.88);
            margin: 0 0 var(--spacing-xl);
            max-width: 620px;
        }
        .page-hero .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-stats {
            display: flex;
            gap: 28px;
            margin-top: var(--spacing-xl);
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: left;
        }
        .hero-stat .stat-number {
            font-family: var(--font-sans);
            font-size: 30px;
            font-weight: 900;
            color: var(--color-accent);
            line-height: 1.2;
            display: block;
        }
        .hero-stat .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            font-family: var(--font-sans);
            letter-spacing: 0.04em;
        }

        /* ========== Section: Overview ========== */
        .overview-section {
            background-color: var(--color-white);
            border-bottom: 1px solid var(--color-border);
        }
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }
        .overview-text h2 {
            font-family: var(--font-sans);
            font-size: 26px;
            font-weight: 700;
            color: var(--color-primary);
            margin-top: 0;
            margin-bottom: var(--spacing-md);
            line-height: 1.5;
        }
        .overview-text p {
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-bottom: var(--spacing-md);
        }
        .overview-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .overview-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .overview-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: linear-gradient(to top, rgba(45, 42, 38, 0.55), transparent);
            pointer-events: none;
        }
        .overview-image .img-caption {
            position: absolute;
            bottom: 16px;
            left: 20px;
            color: var(--color-white);
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.04em;
            z-index: 1;
        }

        /* ========== Timeline Section ========== */
        .timeline-section {
            background-color: var(--color-bg);
        }
        .timeline {
            position: relative;
            max-width: 820px;
            margin: 0 auto;
            padding-left: 40px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 0;
            bottom: 0;
            width: 2px;
            background-color: var(--color-accent-subtle);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: var(--spacing-xl);
            padding-left: 28px;
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 6px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background-color: var(--color-white);
            border: 3px solid var(--color-accent);
            box-shadow: 0 0 0 4px var(--color-accent-light);
            z-index: 1;
        }
        .timeline-item .tl-step {
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            display: block;
            margin-bottom: 6px;
        }
        .timeline-item .tl-title {
            font-family: var(--font-sans);
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .timeline-item .tl-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin: 0;
        }
        .timeline-item .tl-card {
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
        }
        .timeline-item .tl-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent-subtle);
            transform: translateX(2px);
        }

        /* ========== Performance Types ========== */
        .types-section {
            background-color: var(--color-white);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .types-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }
        .type-card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }
        .type-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-accent-subtle);
        }
        .type-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .type-card .type-body {
            padding: var(--spacing-lg);
        }
        .type-card .type-label {
            display: inline-block;
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-accent);
            background-color: var(--color-accent-light);
            padding: 3px 10px;
            border-radius: 14px;
            margin-bottom: 10px;
            text-transform: uppercase;
        }
        .type-card h3 {
            font-family: var(--font-sans);
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .type-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* ========== Cases / Showcase ========== */
        .showcase-section {
            background-color: var(--color-dark-bg);
            color: var(--color-dark-text);
        }
        .showcase-section .section-heading h2 {
            color: var(--color-white);
        }
        .showcase-section .section-heading .section-desc {
            color: rgba(232, 230, 225, 0.7);
        }
        .showcase-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
        }
        .showcase-card {
            background-color: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            transition: all var(--transition-fast);
        }
        .showcase-card:hover {
            background-color: rgba(255, 255, 255, 0.07);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-md);
        }
        .showcase-card .sc-role {
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-accent);
            margin-bottom: 6px;
            text-transform: uppercase;
        }
        .showcase-card h3 {
            font-family: var(--font-sans);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            margin: 0 0 10px;
            line-height: 1.4;
        }
        .showcase-card p {
            font-size: 15px;
            color: rgba(232, 230, 225, 0.75);
            line-height: 1.85;
            margin: 0;
        }
        .showcase-card .sc-highlight {
            display: inline-block;
            margin-top: 12px;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.04em;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background-color: var(--color-white);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-md);
            overflow: hidden;
            transition: all var(--transition-fast);
            background-color: var(--color-white);
        }
        .faq-item:hover {
            border-color: var(--color-accent-subtle);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            padding: 16px 20px;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color var(--transition-fast);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--color-accent);
        }
        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background-color: var(--color-accent-light);
            color: var(--color-accent);
            font-size: 16px;
            font-weight: 700;
            transition: transform var(--transition-fast);
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background-image: linear-gradient(rgba(45, 42, 38, 0.82), rgba(45, 42, 38, 0.72)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 40%;
            color: var(--color-white);
            text-align: center;
            padding: var(--spacing-xxxl) 0;
        }
        .cta-section h2 {
            font-family: var(--font-sans);
            font-size: 30px;
            font-weight: 900;
            color: var(--color-white);
            margin: 0 0 var(--spacing-md);
            line-height: 1.4;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 560px;
            margin: 0 auto var(--spacing-xl);
            line-height: 1.85;
        }
        .cta-section .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== Related Links ========== */
        .related-section {
            background-color: var(--color-bg);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }
        .related-card {
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
            display: block;
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-accent-subtle);
        }
        .related-card h3 {
            font-family: var(--font-sans);
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 6px;
            line-height: 1.4;
        }
        .related-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0 0 10px;
        }
        .related-card .rel-arrow {
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.04em;
        }
        .related-card:hover .rel-arrow {
            color: var(--color-accent-hover);
        }

        /* ========== Footer ========== */
        .site-footer {
            background-color: var(--color-dark-bg);
            color: var(--color-dark-text);
            padding: var(--spacing-xxl) 0 var(--spacing-lg);
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: var(--spacing-lg);
        }
        .footer-brand .footer-logo {
            font-size: 22px;
            margin-bottom: var(--spacing-md);
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(232, 230, 225, 0.65);
            line-height: 1.8;
            margin: 12px 0 0;
            max-width: 280px;
        }
        .footer-links h4,
        .footer-contact h4 {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 700;
            color: var(--color-white);
            margin: 0 0 14px;
            letter-spacing: 0.04em;
        }
        .footer-links a {
            display: block;
            font-size: 14px;
            color: rgba(232, 230, 225, 0.65);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--color-accent);
        }
        .footer-contact p {
            font-size: 14px;
            color: rgba(232, 230, 225, 0.65);
            margin: 0 0 8px;
            line-height: 1.7;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(232, 230, 225, 0.5);
        }
        .footer-copy span {
            display: block;
        }
        .beian {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(232, 230, 225, 0.5);
        }
        .beian a {
            color: rgba(232, 230, 225, 0.5);
            transition: color var(--transition-fast);
        }
        .beian a:hover {
            color: var(--color-accent);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .overview-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .types-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .showcase-grid {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
            .page-hero h1 {
                font-size: 32px;
            }
        }
        @media (max-width: 768px) {
            .brand-contact {
                font-size: 12px;
            }
            .brand-contact .contact-phone {
                font-size: 12px;
            }
            .search-icon-btn {
                width: 32px;
                height: 32px;
            }
            .nav-toggle {
                display: inline-flex;
                position: absolute;
                top: -48px;
                right: 0;
            }
            .nav-row {
                display: none;
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                padding: 8px 0 16px;
                gap: 2px;
            }
            .nav-row.open {
                display: flex;
            }
            .nav-link {
                padding: 10px 16px;
                border-radius: var(--radius-sm);
                text-align: left;
            }
            .nav-link::after {
                display: none;
            }
            .brand-row {
                flex-wrap: wrap;
                gap: 8px;
            }
            .page-hero {
                padding: var(--spacing-xl) 0;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .hero-desc {
                font-size: 15px;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat .stat-number {
                font-size: 24px;
            }
            .types-grid {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .section-heading h2 {
                font-size: 22px;
            }
            .timeline {
                padding-left: 28px;
            }
            .timeline-item {
                padding-left: 16px;
            }
            .timeline-item::before {
                left: -24px;
                width: 12px;
                height: 12px;
                border-width: 2px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .brand-logo {
                font-size: 17px;
            }
            .brand-logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
            .brand-contact span:first-child {
                display: none;
            }
            .page-hero h1 {
                font-size: 22px;
            }
            .page-hero .hero-badge {
                font-size: 11px;
                padding: 4px 12px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 10px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }
            .hero-actions .btn,
            .cta-actions .btn {
                width: 100%;
            }
            .showcase-grid {
                gap: var(--spacing-md);
            }
            .showcase-card h3 {
                font-size: 17px;
            }
            .section-pad {
                padding: var(--spacing-xl) 0;
            }
        }

/* roulang page: category7 */
:root {
            --color-primary: #2D2A26;
            --color-accent: #C89B3C;
            --color-accent-hover: #B0892F;
            --color-accent-light: rgba(200, 155, 60, 0.08);
            --color-accent-subtle: rgba(200, 155, 60, 0.16);
            --color-bg: #F7F5F0;
            --color-text: #333333;
            --color-text-secondary: #666666;
            --color-text-muted: #999999;
            --color-border: #E5E2DA;
            --color-white: #FFFFFF;
            --color-dark-bg: #2D2A26;
            --color-dark-text: #E8E6E1;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', Georgia, serif;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 40px;
            --spacing-xxl: 64px;
            --spacing-xxxl: 80px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-serif);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: none;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
        }

        a:hover {
            color: var(--color-accent-hover);
        }

        a:focus,
        button:focus,
        input:focus,
        textarea:focus,
        select:focus {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        button {
            cursor: pointer;
            font-family: var(--font-sans);
            border: none;
            background: none;
            letter-spacing: 0.02em;
        }

        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--color-text);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background-color: var(--color-white);
            width: 100%;
        }

        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200, 155, 60, 0.12);
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        .section-pad {
            padding: var(--spacing-xxl) 0;
        }

        .section-pad-sm {
            padding: var(--spacing-xl) 0;
        }

        .section-heading {
            margin-bottom: var(--spacing-xl);
            text-align: left;
        }

        .section-heading .section-tag {
            display: inline-block;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            background-color: var(--color-accent-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: var(--spacing-sm);
        }

        .section-heading h2 {
            font-size: 28px;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            font-family: var(--font-sans);
            font-weight: 800;
            line-height: 1.45;
        }

        .section-heading .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 780px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.03em;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            line-height: 1.4;
        }

        .btn-primary {
            background-color: var(--color-accent);
            color: #1A1A1A;
            border: 1px solid var(--color-accent);
        }

        .btn-primary:hover {
            background-color: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            color: #1A1A1A;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:active {
            background-color: var(--color-accent-hover);
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--color-accent);
            border: 1px solid var(--color-accent);
        }

        .btn-secondary:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: translateY(-1px);
        }

        /* Header */
        .site-header {
            background-color: var(--color-white);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-sans);
            font-size: 22px;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 0.04em;
        }

        .brand-logo:hover {
            color: var(--color-primary);
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background-color: var(--color-accent);
            color: var(--color-primary);
            font-weight: 900;
            border-radius: var(--radius-sm);
            font-size: 18px;
            letter-spacing: 0;
        }

        .brand-contact {
            display: flex;
            align-items: center;
            gap: 16px;
            font-family: var(--font-sans);
            font-size: 14px;
            color: var(--color-text-secondary);
        }

        .contact-phone {
            font-weight: 700;
            color: var(--color-primary);
            font-size: 16px;
            letter-spacing: 0.02em;
        }

        .search-icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            border: 1px solid var(--color-border);
            background-color: var(--color-white);
        }

        .search-icon-btn:hover {
            color: var(--color-accent);
            border-color: var(--color-accent);
            background-color: var(--color-accent-light);
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            color: var(--color-primary);
            background-color: var(--color-accent-light);
            border: 1px solid var(--color-border);
            position: absolute;
            right: 20px;
            top: -52px;
            z-index: 20;
        }

        .nav-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            padding: 10px 0 14px;
            border-top: 1px solid var(--color-border);
        }

        .nav-link {
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
            letter-spacing: 0.03em;
            border-bottom: 2px solid transparent;
        }

        .nav-link:hover {
            color: var(--color-accent);
            background-color: var(--color-accent-light);
        }

        .nav-link.active {
            color: var(--color-accent);
            font-weight: 700;
            border-bottom-color: var(--color-accent);
            background-color: var(--color-accent-light);
        }

        /* Page Hero */
        .page-hero {
            background-color: var(--color-primary);
            background-image: linear-gradient(rgba(45, 42, 38, 0.88), rgba(45, 42, 38, 0.92)), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            padding: var(--spacing-xxxl) 0 var(--spacing-xxl);
            color: var(--color-dark-text);
            position: relative;
        }

        .page-hero .breadcrumb {
            font-family: var(--font-sans);
            font-size: 13px;
            color: rgba(232, 230, 225, 0.7);
            margin-bottom: var(--spacing-lg);
            letter-spacing: 0.04em;
        }

        .page-hero .breadcrumb a {
            color: var(--color-accent);
        }

        .page-hero .breadcrumb a:hover {
            color: var(--color-accent-hover);
            text-decoration: underline;
        }

        .page-hero h1 {
            font-family: var(--font-sans);
            font-size: 38px;
            font-weight: 900;
            color: var(--color-white);
            letter-spacing: 0.05em;
            margin-bottom: var(--spacing-md);
            line-height: 1.4;
            max-width: 800px;
        }

        .page-hero .hero-sub {
            font-size: 17px;
            color: rgba(232, 230, 225, 0.85);
            max-width: 700px;
            line-height: 1.9;
            margin-bottom: var(--spacing-lg);
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            background-color: rgba(200, 155, 60, 0.2);
            color: var(--color-accent);
            border: 1px solid rgba(200, 155, 60, 0.3);
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.06em;
        }

        /* Hero Steps */
        .hero-steps {
            display: flex;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
            margin-top: var(--spacing-lg);
        }

        .hero-step {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-sans);
            font-size: 14px;
            color: rgba(232, 230, 225, 0.8);
        }

        .hero-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: var(--color-accent);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 13px;
            flex-shrink: 0;
        }

        /* Services Grid */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
            margin-top: var(--spacing-lg);
        }

        .service-card {
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }

        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent-subtle);
        }

        .service-card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

        .service-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .service-card:hover .service-card-img img {
            transform: scale(1.05);
        }

        .service-card-body {
            padding: var(--spacing-lg);
        }

        .service-card-body h3 {
            font-family: var(--font-sans);
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            line-height: 1.5;
        }

        .service-card-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: var(--spacing-md);
        }

        .service-tag {
            display: inline-block;
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 14px;
            background-color: var(--color-accent-light);
            color: var(--color-accent);
            letter-spacing: 0.04em;
        }

        /* Scenario Section */
        .scenario-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .scenario-item {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-md);
            background-color: var(--color-white);
            padding: var(--spacing-lg);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
        }

        .scenario-item:hover {
            border-color: var(--color-accent-subtle);
            box-shadow: var(--shadow-sm);
        }

        .scenario-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background-color: var(--color-accent-light);
            color: var(--color-accent);
            flex-shrink: 0;
        }

        .scenario-item h3 {
            font-family: var(--font-sans);
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
            line-height: 1.5;
        }

        .scenario-item p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

        /* Process Timeline */
        .process-timeline {
            position: relative;
            margin-top: var(--spacing-xl);
            padding-left: 30px;
        }

        .process-timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--color-accent), rgba(200, 155, 60, 0.2));
        }

        .process-step {
            position: relative;
            padding: 0 0 var(--spacing-lg) var(--spacing-lg);
        }

        .process-step:last-child {
            padding-bottom: 0;
        }

        .process-step::before {
            content: '';
            position: absolute;
            left: -27px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: var(--color-accent);
            border: 3px solid var(--color-bg);
            box-shadow: 0 0 0 2px var(--color-accent);
        }

        .process-step h3 {
            font-family: var(--font-sans);
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
            line-height: 1.5;
        }

        .process-step p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

        .process-step .step-label {
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.05em;
            margin-bottom: 2px;
            display: block;
        }

        /* Team Cards */
        .team-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            margin-top: var(--spacing-lg);
        }

        .team-card {
            background-color: var(--color-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }

        .team-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .team-card-img {
            aspect-ratio: 1 / 1;
            overflow: hidden;
        }

        .team-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .team-card-body {
            padding: var(--spacing-md);
            text-align: center;
        }

        .team-card-body h3 {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 2px;
        }

        .team-card-body .team-role {
            font-family: var(--font-sans);
            font-size: 12px;
            color: var(--color-accent);
            font-weight: 600;
            letter-spacing: 0.04em;
        }

        .team-card-body p {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-top: 6px;
            line-height: 1.6;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .faq-item {
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--color-accent-subtle);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            padding: var(--spacing-lg);
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            text-align: left;
            transition: all var(--transition-fast);
            background: none;
            line-height: 1.6;
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: var(--color-accent-light);
            color: var(--color-accent);
            font-size: 18px;
            font-weight: 700;
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);
            padding: 0 var(--spacing-lg);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 var(--spacing-lg) var(--spacing-lg);
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--color-primary);
            background-image: linear-gradient(rgba(45, 42, 38, 0.92), rgba(45, 42, 38, 0.96)), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: var(--spacing-xxl) 0;
            color: var(--color-dark-text);
            text-align: center;
        }

        .cta-section h2 {
            font-family: var(--font-sans);
            font-size: 30px;
            font-weight: 800;
            color: var(--color-white);
            margin-bottom: var(--spacing-md);
            line-height: 1.5;
        }

        .cta-section p {
            font-size: 15px;
            color: rgba(232, 230, 225, 0.8);
            max-width: 600px;
            margin: 0 auto var(--spacing-lg);
            line-height: 1.8;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-dark-bg);
            color: var(--color-dark-text);
            padding: var(--spacing-xxl) 0 var(--spacing-md);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
            border-bottom: 1px solid rgba(232, 230, 225, 0.12);
        }

        .footer-logo {
            font-family: var(--font-sans);
            font-size: 20px;
            font-weight: 800;
            color: var(--color-white);
            margin-bottom: var(--spacing-sm);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand p {
            font-size: 13px;
            color: rgba(232, 230, 225, 0.6);
            line-height: 1.7;
            margin-top: var(--spacing-sm);
            max-width: 300px;
        }

        .footer-links h4,
        .footer-contact h4 {
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.04em;
        }

        .footer-links a,
        .footer-contact p {
            display: block;
            font-size: 13px;
            color: rgba(232, 230, 225, 0.6);
            margin-bottom: var(--spacing-sm);
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-contact p {
            margin-bottom: var(--spacing-xs);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            padding-top: var(--spacing-lg);
        }

        .footer-copy {
            font-size: 12px;
            color: rgba(232, 230, 225, 0.5);
        }

        .beian {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 12px;
            color: rgba(232, 230, 225, 0.5);
        }

        .beian a {
            color: rgba(232, 230, 225, 0.6);
        }

        .beian a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .team-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-row {
                display: none;
                flex-direction: column;
                align-items: stretch;
                padding: var(--spacing-md) 0;
                gap: 2px;
            }
            .nav-row.open {
                display: flex;
            }
            .nav-link {
                padding: 10px 16px;
                border-radius: var(--radius-sm);
                border-bottom: none;
            }
            .nav-link.active {
                border-bottom: none;
            }
            .brand-contact span:first-child {
                display: none;
            }
            .contact-phone {
                font-size: 14px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .hero-steps {
                flex-direction: column;
                gap: var(--spacing-sm);
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .team-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-item {
                flex-direction: column;
                gap: var(--spacing-sm);
            }
            .footer-top {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-heading h2 {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .team-grid {
                grid-template-columns: 1fr;
            }
            .page-hero {
                padding: var(--spacing-xl) 0;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .brand-contact {
                gap: 8px;
            }
            .contact-phone {
                font-size: 13px;
            }
            .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .brand-logo {
                font-size: 18px;
                gap: 6px;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }