/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --secondary: #e8a832;
            --secondary-light: #f0c060;
            --secondary-dark: #c88a1a;
            --accent: #d94a4a;
            --bg-body: #f5f7fa;
            --bg-white: #ffffff;
            --bg-light: #eef1f5;
            --bg-dark: #0f1a2b;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-light: #7a8a9a;
            --text-white: #f0f2f5;
            --border-color: #dce0e5;
            --border-light: #e8ecf0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-base: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', Roboto, system-ui, -apple-system, sans-serif;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-base);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-body);
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--secondary); text-decoration: none; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; padding: 0; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; margin-bottom: 1.2rem; }
        h3 { font-size: 1.5rem; margin-bottom: 0.8rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container { max-width: 1200px; padding: 0 1.5rem; margin: 0 auto; }

        /* ===== 自定义 Bootstrap 覆盖 ===== */
        .btn { border-radius: var(--radius-md); padding: 0.6rem 1.8rem; font-weight: 600; letter-spacing: 0.3px; transition: var(--transition); border: 2px solid transparent; }
        .btn-primary { background-color: var(--secondary); border-color: var(--secondary); color: var(--primary-dark); }
        .btn-primary:hover { background-color: var(--secondary-dark); border-color: var(--secondary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,168,50,0.35); }
        .btn-outline-light { border-color: var(--text-white); color: var(--text-white); }
        .btn-outline-light:hover { background-color: var(--text-white); color: var(--primary); border-color: var(--text-white); transform: translateY(-2px); }
        .btn-secondary-custom { background-color: transparent; border-color: var(--secondary); color: var(--secondary); }
        .btn-secondary-custom:hover { background-color: var(--secondary); color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,168,50,0.25); }
        .card { border: none; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); transition: var(--transition); background: var(--bg-white); overflow: hidden; }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .card-body { padding: 1.8rem; }
        .badge { font-weight: 500; padding: 0.35em 0.9em; border-radius: 50px; font-size: 0.75rem; letter-spacing: 0.3px; }
        .badge-primary { background-color: var(--primary-light); color: #fff; }
        .badge-secondary { background-color: var(--secondary); color: var(--primary-dark); }
        .section-title { text-align: center; margin-bottom: 3rem; }
        .section-title h2 { position: relative; display: inline-block; margin-bottom: 0.8rem; }
        .section-title h2::after { content: ''; display: block; width: 60px; height: 4px; background: var(--secondary); border-radius: 4px; margin: 0.8rem auto 0; }
        .section-title p { max-width: 600px; margin: 0 auto; color: var(--text-light); font-size: 1.05rem; }
        .section-padding { padding: 5rem 0; }
        .bg-white { background-color: var(--bg-white); }
        .bg-light { background-color: var(--bg-light); }
        .bg-dark-section { background-color: var(--bg-dark); color: var(--text-white); }
        .bg-dark-section h2, .bg-dark-section h3, .bg-dark-section .text-white { color: #fff; }
        .bg-dark-section p { color: rgba(255,255,255,0.8); }
        .text-gold { color: var(--secondary); }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--bg-white);
            box-shadow: 0 2px 20px rgba(0,0,0,0.06);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.10); }
        .navbar { padding: 0.6rem 0; }
        .navbar-brand {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary) !important;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .navbar-brand i { color: var(--secondary); font-size: 1.8rem; }
        .navbar-brand span { color: var(--secondary); }
        .nav-link {
            font-weight: 600;
            color: var(--text-secondary) !important;
            padding: 0.5rem 1.2rem !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            font-size: 0.95rem;
        }
        .nav-link:hover, .nav-link:focus { color: var(--primary) !important; background: rgba(26,58,92,0.06); }
        .nav-link.active { color: var(--primary) !important; background: rgba(26,58,92,0.08); }
        .nav-link.active::after { content: ''; position: absolute; bottom: 2px; left: 1.2rem; right: 1.2rem; height: 3px; background: var(--secondary); border-radius: 3px; }
        .nav-cta .btn { padding: 0.4rem 1.4rem; font-size: 0.9rem; border-radius: 50px; }
        .navbar-toggler { border: none; padding: 0.4rem 0.6rem; font-size: 1.4rem; color: var(--primary); }
        .navbar-toggler:focus { box-shadow: none; }
        .navbar-toggler i { font-size: 1.6rem; }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: var(--bg-dark) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,43,0.85) 0%, rgba(26,58,92,0.70) 50%, rgba(15,26,43,0.60) 100%);
            z-index: 1;
        }
        .hero-section .container { position: relative; z-index: 2; }
        .hero-content { max-width: 780px; }
        .hero-content h1 { font-size: 3.6rem; font-weight: 800; line-height: 1.2; margin-bottom: 1.2rem; color: #fff; letter-spacing: -0.5px; }
        .hero-content h1 span { color: var(--secondary); }
        .hero-content p { font-size: 1.2rem; color: rgba(255,255,255,0.85); margin-bottom: 2rem; max-width: 600px; line-height: 1.8; }
        .hero-badges { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-bottom: 2rem; }
        .hero-badges .badge { background: rgba(255,255,255,0.15); backdrop-filter: blur(6px); color: #fff; padding: 0.5rem 1.2rem; font-size: 0.85rem; border-radius: 50px; border: 1px solid rgba(255,255,255,0.20); }
        .hero-badges .badge i { margin-right: 0.4rem; color: var(--secondary); }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
        .hero-actions .btn { padding: 0.8rem 2.4rem; font-size: 1.05rem; border-radius: 50px; }
        .hero-actions .btn-primary { background: var(--secondary); border-color: var(--secondary); color: var(--primary-dark); }
        .hero-actions .btn-primary:hover { background: var(--secondary-light); border-color: var(--secondary-light); color: var(--primary-dark); transform: translateY(-3px); box-shadow: 0 12px 32px rgba(232,168,50,0.40); }
        .hero-actions .btn-outline-light { border-color: rgba(255,255,255,0.6); color: #fff; }
        .hero-actions .btn-outline-light:hover { background: rgba(255,255,255,0.15); border-color: #fff; color: #fff; transform: translateY(-3px); }
        .hero-stats { display: flex; flex-wrap: wrap; gap: 2.5rem; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,0.15); }
        .hero-stat-item { text-align: center; }
        .hero-stat-item .number { font-size: 2.2rem; font-weight: 800; color: var(--secondary); line-height: 1.2; }
        .hero-stat-item .label { font-size: 0.85rem; color: rgba(255,255,255,0.7); margin-top: 0.2rem; letter-spacing: 0.5px; }

        /* ===== 核心说明 ===== */
        .intro-section { background: var(--bg-white); }
        .intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
        .intro-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
        .intro-image img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; }
        .intro-text h2 { font-size: 2rem; margin-bottom: 1.2rem; }
        .intro-text h2 span { color: var(--secondary); }
        .intro-text p { font-size: 1.05rem; line-height: 1.8; }
        .intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin-top: 1.5rem; }
        .intro-feature-item { display: flex; align-items: flex-start; gap: 0.8rem; }
        .intro-feature-item i { color: var(--secondary); font-size: 1.3rem; margin-top: 0.2rem; flex-shrink: 0; }
        .intro-feature-item strong { display: block; font-weight: 700; color: var(--text-primary); }
        .intro-feature-item span { font-size: 0.9rem; color: var(--text-light); }

        /* ===== 分类入口 ===== */
        .categories-section { background: var(--bg-light); }
        .category-card { background: var(--bg-white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); height: 100%; display: flex; flex-direction: column; }
        .category-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); }
        .category-card .card-img { height: 200px; overflow: hidden; position: relative; }
        .category-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
        .category-card:hover .card-img img { transform: scale(1.05); }
        .category-card .card-img .overlay { position: absolute; inset: 0; background: linear-gradient(0deg, rgba(15,26,43,0.50) 0%, transparent 60%); }
        .category-card .card-body { padding: 1.8rem; flex: 1; display: flex; flex-direction: column; }
        .category-card .card-body h3 { font-size: 1.4rem; margin-bottom: 0.6rem; }
        .category-card .card-body h3 a { color: var(--text-primary); }
        .category-card .card-body h3 a:hover { color: var(--secondary); }
        .category-card .card-body p { font-size: 0.95rem; color: var(--text-light); flex: 1; }
        .category-card .card-body .btn { align-self: flex-start; margin-top: 0.8rem; padding: 0.4rem 1.4rem; font-size: 0.9rem; border-radius: 50px; }

        /* ===== 最新资讯 ===== */
        .news-section { background: var(--bg-white); }
        .news-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1.8rem; }
        .news-card { background: var(--bg-white); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--border-light); height: 100%; display: flex; flex-direction: column; }
        .news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: transparent; }
        .news-card .card-img { height: 180px; overflow: hidden; position: relative; }
        .news-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
        .news-card:hover .card-img img { transform: scale(1.05); }
        .news-card .card-img .tag { position: absolute; top: 1rem; left: 1rem; background: var(--secondary); color: var(--primary-dark); padding: 0.2rem 1rem; border-radius: 50px; font-size: 0.75rem; font-weight: 600; }
        .news-card .card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
        .news-card .card-body .meta { font-size: 0.8rem; color: var(--text-light); display: flex; gap: 1rem; margin-bottom: 0.6rem; }
        .news-card .card-body .meta i { margin-right: 0.3rem; }
        .news-card .card-body h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.6rem; }
        .news-card .card-body h4 a { color: var(--text-primary); }
        .news-card .card-body h4 a:hover { color: var(--secondary); }
        .news-card .card-body p { font-size: 0.9rem; color: var(--text-light); flex: 1; margin-bottom: 0.8rem; }
        .news-card .card-body .read-more { font-size: 0.85rem; font-weight: 600; color: var(--primary-light); display: inline-flex; align-items: center; gap: 0.4rem; }
        .news-card .card-body .read-more:hover { color: var(--secondary); }
        .news-empty { text-align: center; padding: 3rem; color: var(--text-light); font-size: 1.1rem; background: var(--bg-light); border-radius: var(--radius-md); }

        /* ===== 数据流程 ===== */
        .stats-section { background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center center / cover no-repeat; position: relative; }
        .stats-section::before { content: ''; position: absolute; inset: 0; background: rgba(15,26,43,0.85); }
        .stats-section .container { position: relative; z-index: 2; }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; text-align: center; }
        .stats-item .number { font-size: 3rem; font-weight: 800; color: var(--secondary); line-height: 1.2; }
        .stats-item .label { font-size: 1rem; color: rgba(255,255,255,0.8); margin-top: 0.4rem; }
        .stats-item .desc { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin-top: 0.2rem; }
        .process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; margin-top: 3rem; }
        .process-step { text-align: center; position: relative; }
        .process-step .step-num { width: 48px; height: 48px; background: var(--secondary); color: var(--primary-dark); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.3rem; margin: 0 auto 1rem; position: relative; z-index: 2; }
        .process-step .step-title { font-size: 1.1rem; font-weight: 700; color: #fff; margin-bottom: 0.4rem; }
        .process-step .step-desc { font-size: 0.85rem; color: rgba(255,255,255,0.7); }
        .process-step:not(:last-child)::after { content: '→'; position: absolute; top: 12px; right: -1.2rem; font-size: 1.6rem; color: var(--secondary); opacity: 0.5; z-index: 1; }

        /* ===== FAQ ===== */
        .faq-section { background: var(--bg-white); }
        .faq-grid { max-width: 800px; margin: 0 auto; }
        .faq-item { border-bottom: 1px solid var(--border-light); padding: 1.2rem 0; }
        .faq-item:first-child { padding-top: 0; }
        .faq-question { display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-weight: 700; font-size: 1.05rem; color: var(--text-primary); padding: 0.4rem 0; }
        .faq-question i { color: var(--secondary); transition: var(--transition); font-size: 1.2rem; }
        .faq-question[aria-expanded="true"] i { transform: rotate(45deg); }
        .faq-answer { padding: 0.6rem 0 0.2rem; color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; display: none; }
        .faq-answer.show { display: block; }

        /* ===== CTA ===== */
        .cta-section { background: var(--primary) url('/assets/images/backpic/back-3.png') center center / cover no-repeat; position: relative; }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(26,58,92,0.90) 0%, rgba(15,26,43,0.85) 100%); }
        .cta-section .container { position: relative; z-index: 2; text-align: center; }
        .cta-section h2 { color: #fff; font-size: 2.4rem; margin-bottom: 1rem; }
        .cta-section p { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 600px; margin: 0 auto 2rem; }
        .cta-section .btn { padding: 0.8rem 2.8rem; font-size: 1.1rem; border-radius: 50px; }
        .cta-section .btn-primary { background: var(--secondary); border-color: var(--secondary); color: var(--primary-dark); }
        .cta-section .btn-primary:hover { background: var(--secondary-light); border-color: var(--secondary-light); transform: translateY(-3px); box-shadow: 0 12px 32px rgba(232,168,50,0.40); }

        /* ===== 页脚 ===== */
        .site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.8); padding: 4rem 0 2rem; }
        .site-footer h4 { color: #fff; font-size: 1.1rem; font-weight: 700; margin-bottom: 1.2rem; }
        .site-footer p, .site-footer a { color: rgba(255,255,255,0.6); font-size: 0.9rem; }
        .site-footer a:hover { color: var(--secondary); }
        .footer-brand { font-size: 1.4rem; font-weight: 800; color: #fff !important; display: flex; align-items: center; gap: 0.4rem; margin-bottom: 0.8rem; }
        .footer-brand i { color: var(--secondary); }
        .footer-brand span { color: var(--secondary); }
        .footer-links { display: flex; flex-wrap: wrap; gap: 1.2rem; }
        .footer-links a { position: relative; }
        .footer-links a:not(:last-child)::after { content: '|'; margin-left: 1.2rem; color: rgba(255,255,255,0.2); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); margin-top: 2rem; padding-top: 1.5rem; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem; }
        .footer-bottom p { margin: 0; font-size: 0.85rem; color: rgba(255,255,255,0.4); }
        .footer-social { display: flex; gap: 1rem; }
        .footer-social a { width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6); transition: var(--transition); font-size: 0.9rem; }
        .footer-social a:hover { background: var(--secondary); color: var(--primary-dark); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .hero-content h1 { font-size: 2.8rem; }
            .intro-grid { grid-template-columns: 1fr; gap: 2rem; }
            .intro-image { order: -1; max-height: 300px; }
            .news-grid { grid-template-columns: 1fr 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .process-steps { grid-template-columns: repeat(2, 1fr); }
            .process-step:not(:last-child)::after { display: none; }
        }
        @media (max-width: 768px) {
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            .section-padding { padding: 3rem 0; }
            .hero-section { min-height: 70vh; }
            .hero-content h1 { font-size: 2.2rem; }
            .hero-content p { font-size: 1rem; }
            .hero-stats { gap: 1.5rem; }
            .hero-stat-item .number { font-size: 1.6rem; }
            .intro-features { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .categories-section .row > div { margin-bottom: 1.5rem; }
            .stats-grid { gap: 1.5rem; }
            .stats-item .number { font-size: 2.2rem; }
            .process-steps { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
            .cta-section h2 { font-size: 1.8rem; }
            .site-footer { padding: 3rem 0 1.5rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .navbar-brand { font-size: 1.3rem; }
            .navbar .container { padding: 0 1rem; }
            .nav-link { padding: 0.6rem 1rem !important; }
            .nav-link.active::after { display: none; }
        }
        @media (max-width: 520px) {
            .hero-content h1 { font-size: 1.8rem; }
            .hero-actions .btn { padding: 0.6rem 1.6rem; font-size: 0.9rem; width: 100%; text-align: center; }
            .hero-actions { flex-direction: column; }
            .hero-stats { flex-direction: column; gap: 1rem; }
            .hero-stat-item { text-align: left; display: flex; align-items: center; gap: 0.8rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
            .process-steps { grid-template-columns: 1fr; }
            .section-title h2 { font-size: 1.4rem; }
            .cta-section h2 { font-size: 1.5rem; }
            .footer-links { flex-direction: column; gap: 0.6rem; }
            .footer-links a:not(:last-child)::after { display: none; }
        }

        /* ===== 辅助 ===== */
        .text-secondary-custom { color: var(--secondary) !important; }
        .bg-secondary-custom { background-color: var(--secondary) !important; }
        .shadow-hover { transition: var(--transition); }
        .shadow-hover:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .divider { width: 60px; height: 4px; background: var(--secondary); border-radius: 4px; margin: 1rem 0; }
        .divider-center { margin-left: auto; margin-right: auto; }
        .mt-2 { margin-top: 0.8rem; }
        .mb-2 { margin-bottom: 0.8rem; }
        .gap-1 { gap: 0.5rem; }
        .gap-2 { gap: 1rem; }
        .gap-3 { gap: 1.5rem; }
        .flex-wrap { flex-wrap: wrap; }
        .align-center { align-items: center; }
        .text-center { text-align: center; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-dark: #1a1a2e;
            --bg-card: #ffffff;
            --text-dark: #212529;
            --text-body: #495057;
            --text-muted: #6c757d;
            --text-light: #f8f9fa;
            --border-color: #dee2e6;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button:focus-visible,
        .btn:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* ===== 导航 ===== */
        .site-header {
            background: #ffffff;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
        }
        .site-header .navbar {
            padding: 0.6rem 0;
        }
        .navbar-brand {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .navbar-brand i {
            color: var(--primary);
            font-size: 1.4rem;
        }
        .navbar-brand span {
            color: var(--primary);
            font-weight: 700;
        }
        .navbar-brand:hover {
            color: var(--text-dark);
            transform: scale(1.02);
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            font-size: 1rem;
            padding: 0.6rem 1.2rem;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.1);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 1.2rem;
            right: 1.2rem;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-cta .btn-primary {
            background: var(--primary);
            border: none;
            padding: 0.6rem 1.6rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.3);
            font-size: 0.95rem;
        }
        .nav-cta .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.4);
        }
        .navbar-toggler {
            border: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            padding: 0.2rem 0.6rem;
            border-radius: var(--radius-sm);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.3);
        }

        /* ===== Banner 分类头图 ===== */
        .category-banner {
            position: relative;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            padding: 5rem 0 4rem;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
            z-index: 0;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-light), transparent);
            z-index: 1;
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        .category-banner .breadcrumb-custom {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 1rem;
        }
        .category-banner .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.7);
        }
        .category-banner .breadcrumb-custom a:hover {
            color: #fff;
        }
        .category-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .category-banner .lead {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 700px;
            line-height: 1.8;
        }
        .category-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-top: 1.2rem;
        }
        .category-banner .banner-tags .badge {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            font-weight: 500;
            padding: 0.45rem 1.2rem;
            border-radius: 30px;
            font-size: 0.85rem;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 0.75rem;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 2.5rem;
            line-height: 1.7;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0 auto 1.5rem;
        }

        /* ===== 入口方式卡片 ===== */
        .entry-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 2.2rem 1.8rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.04);
            height: 100%;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .entry-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: var(--transition);
        }
        .entry-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: transparent;
        }
        .entry-card:hover::before {
            opacity: 1;
        }
        .entry-card .icon-wrap {
            width: 72px;
            height: 72px;
            background: linear-gradient(135deg, rgba(230, 57, 70, 0.1), rgba(230, 57, 70, 0.05));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.2rem;
            font-size: 2rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .entry-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .entry-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.6rem;
        }
        .entry-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 1.2rem;
            line-height: 1.6;
        }
        .entry-card .btn-outline-primary {
            border: 2px solid var(--primary);
            color: var(--primary);
            font-weight: 600;
            padding: 0.5rem 1.6rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .entry-card .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.3);
        }
        .entry-card .badge-entry {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.75rem;
            padding: 0.25rem 0.9rem;
            border-radius: 20px;
        }

        /* ===== 步骤流程 ===== */
        .step-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
            counter-reset: step;
        }
        .step-item {
            flex: 1 1 200px;
            max-width: 240px;
            text-align: center;
            position: relative;
            counter-increment: step;
        }
        .step-item::after {
            content: '→';
            position: absolute;
            right: -1.2rem;
            top: 2.2rem;
            font-size: 1.8rem;
            color: var(--primary);
            font-weight: 700;
            opacity: 0.4;
        }
        .step-item:last-child::after {
            display: none;
        }
        .step-item .step-num {
            width: 56px;
            height: 56px;
            background: var(--primary);
            color: #fff;
            font-size: 1.4rem;
            font-weight: 800;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.3);
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.4rem;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 0;
        }

        /* ===== 内容卡片 ===== */
        .content-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.04);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .content-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .content-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .content-card:hover .card-img img {
            transform: scale(1.05);
        }
        .content-card .card-img .card-tag {
            position: absolute;
            top: 1rem;
            left: 1rem;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 1rem;
            border-radius: 20px;
            z-index: 2;
        }
        .content-card .card-body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.6rem;
            line-height: 1.4;
        }
        .content-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 1rem;
        }
        .content-card .card-body .card-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 1rem;
            border-top: 1px solid var(--border-color);
            padding-top: 0.8rem;
            margin-top: auto;
        }
        .content-card .card-body .card-meta i {
            margin-right: 0.3rem;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 2.5rem;
            border: 1px solid rgba(0, 0, 0, 0.04);
        }
        .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border-color);
            background: transparent;
        }
        .accordion-item:last-child {
            border-bottom: none;
        }
        .accordion-button {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-dark);
            padding: 1.2rem 0;
            background: transparent;
            box-shadow: none;
            border: none;
        }
        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: transparent;
            box-shadow: none;
        }
        .accordion-button::after {
            background-size: 1rem;
            transition: var(--transition);
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .accordion-body {
            padding: 0 0 1.2rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-block .container {
            position: relative;
            z-index: 1;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .cta-block p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 1.8rem;
        }
        .cta-block .btn-cta {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 0.9rem 2.8rem;
            font-size: 1.1rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.35);
        }
        .cta-block .btn-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(230, 57, 70, 0.45);
        }
        .cta-block .btn-cta i {
            margin-right: 0.5rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 4rem 0 0;
        }
        .site-footer .footer-brand {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            margin-bottom: 1rem;
        }
        .site-footer .footer-brand i {
            color: var(--primary);
        }
        .site-footer .footer-brand span {
            color: var(--primary);
        }
        .site-footer .footer-brand:hover {
            color: #fff;
        }
        .site-footer p {
            font-size: 0.95rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
        }
        .site-footer h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1.2rem;
            position: relative;
            padding-bottom: 0.6rem;
        }
        .site-footer h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.92rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary-light);
            transform: translateX(4px);
        }
        .footer-social {
            display: flex;
            gap: 0.8rem;
            margin-top: 1.2rem;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.8rem 0;
            margin-top: 3rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }
        .footer-bottom p {
            margin-bottom: 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 统计数字 ===== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .stat-item {
            text-align: center;
            padding: 1.8rem 1rem;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(0, 0, 0, 0.03);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .stat-item .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .category-banner h1 {
                font-size: 2.4rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-item::after {
                display: none;
            }
            .step-wrapper {
                gap: 1rem;
            }
        }
        @media (max-width: 768px) {
            .category-banner {
                padding: 3.5rem 0 2.5rem;
                min-height: 240px;
            }
            .category-banner h1 {
                font-size: 1.8rem;
            }
            .category-banner .lead {
                font-size: 1rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 1.8rem;
            }
            .entry-card {
                padding: 1.6rem 1.2rem;
            }
            .cta-block {
                padding: 2.5rem 1.5rem;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 0.95rem;
            }
            .faq-section {
                padding: 1.5rem;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .stat-item .stat-num {
                font-size: 1.8rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }
            .navbar-nav .nav-link.active::after {
                bottom: 0;
                left: 1.2rem;
                right: 1.2rem;
                height: 2px;
            }
            .step-item {
                flex: 1 1 150px;
                max-width: 180px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .category-banner h1 {
                font-size: 1.5rem;
            }
            .category-banner .banner-tags .badge {
                font-size: 0.75rem;
                padding: 0.3rem 0.8rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.8rem;
            }
            .stat-item {
                padding: 1.2rem 0.8rem;
            }
            .stat-item .stat-num {
                font-size: 1.5rem;
            }
            .entry-card .icon-wrap {
                width: 56px;
                height: 56px;
                font-size: 1.5rem;
            }
            .entry-card h3 {
                font-size: 1.1rem;
            }
            .content-card .card-img {
                height: 160px;
            }
            .content-card .card-body {
                padding: 1.2rem;
            }
            .cta-block {
                padding: 2rem 1.2rem;
            }
            .cta-block h2 {
                font-size: 1.3rem;
            }
            .cta-block .btn-cta {
                padding: 0.7rem 2rem;
                font-size: 0.95rem;
            }
            .footer-social a {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
            .navbar-brand {
                font-size: 1.3rem;
            }
            .nav-cta .btn-primary {
                padding: 0.4rem 1.2rem;
                font-size: 0.85rem;
            }
            .step-item {
                flex: 1 1 120px;
                max-width: 150px;
            }
            .step-item .step-num {
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
            }
            .step-item h4 {
                font-size: 0.95rem;
            }
            .step-item p {
                font-size: 0.82rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #e03a3a;
            --primary-dark: #c02e2e;
            --primary-light: #fce8e8;
            --secondary: #1a1a2e;
            --accent: #f5a623;
            --bg-body: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f0f1a;
            --text-primary: #1a1a2e;
            --text-secondary: #5a5a7a;
            --text-light: #8e8ea0;
            --text-white: #ffffff;
            --border-color: #e8e8f0;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.07);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.10);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        .container { max-width: 1200px; padding: 0 20px; margin: 0 auto; }
        .container-narrow { max-width: 860px; padding: 0 20px; margin: 0 auto; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0,0,0,0.04);
            transition: var(--transition);
        }
        .site-header .navbar { padding: 12px 0; }
        .navbar-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-brand i { color: var(--primary); font-size: 1.6rem; }
        .navbar-brand span { color: var(--primary); font-weight: 700; }
        .navbar-brand:hover { color: var(--primary); }
        .navbar-nav .nav-link {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }
        .nav-cta .btn-primary {
            background: var(--primary);
            border: none;
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(224, 58, 58, 0.3);
        }
        .nav-cta .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(224, 58, 58, 0.4);
        }
        .navbar-toggler { border: none; font-size: 1.4rem; color: var(--text-primary); padding: 4px 8px; }
        .navbar-toggler:focus { box-shadow: none; }

        /* ===== Article Banner ===== */
        .article-banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #0f0f1a 0%, #1a1a3e 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,15,26,0.85) 0%, rgba(26,26,62,0.70) 100%);
            z-index: 1;
        }
        .article-banner .container-narrow { position: relative; z-index: 2; }
        .article-banner .category-badge {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 50px;
            letter-spacing: 0.3px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .article-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
            max-width: 800px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 30px;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
            align-items: center;
        }
        .article-meta i { margin-right: 6px; color: var(--primary); }
        .article-meta span { display: inline-flex; align-items: center; }

        /* ===== Breadcrumb ===== */
        .breadcrumb-area {
            padding: 20px 0;
            background: #fff;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 0.9rem;
        }
        .breadcrumb-custom li { color: var(--text-light); }
        .breadcrumb-custom li+li::before {
            content: '›';
            margin-right: 8px;
            color: var(--text-light);
        }
        .breadcrumb-custom a { color: var(--text-secondary); }
        .breadcrumb-custom a:hover { color: var(--primary); }
        .breadcrumb-custom .active { color: var(--text-primary); font-weight: 600; }

        /* ===== Article Body ===== */
        .article-body-wrap {
            padding: 50px 0 60px;
            background: var(--bg-body);
        }
        .article-featured-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            margin-bottom: 40px;
        }
        .article-featured-image img {
            width: 100%;
            height: auto;
            max-height: 480px;
            object-fit: cover;
            transition: var(--transition);
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-primary);
        }
        .article-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 40px 0 16px;
            color: var(--secondary);
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin: 32px 0 12px;
            color: var(--secondary);
        }
        .article-content p {
            margin-bottom: 20px;
            color: var(--text-secondary);
        }
        .article-content ul, .article-content ol {
            margin-bottom: 20px;
            padding-left: 24px;
            color: var(--text-secondary);
        }
        .article-content li { margin-bottom: 8px; }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 24px 0;
            background: var(--primary-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content a { color: var(--primary); text-decoration: underline; }
        .article-content a:hover { color: var(--primary-dark); }

        /* ===== Tags & Share ===== */
        .article-footer-bar {
            padding: 30px 0 20px;
            border-top: 1px solid var(--border-color);
            margin-top: 40px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .article-tags .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 50px;
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--primary);
            color: #fff;
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-body);
            color: var(--text-secondary);
            font-size: 1rem;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .article-share a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Related Posts ===== */
        .related-posts {
            padding: 60px 0;
            background: #fff;
        }
        .related-posts .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 40px;
            text-align: center;
            letter-spacing: -0.3px;
        }
        .related-posts .section-title span { color: var(--primary); }
        .related-card {
            background: var(--bg-body);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .related-card .card-img {
            height: 200px;
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .related-card:hover .card-img img { transform: scale(1.05); }
        .related-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-body .cat-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            padding: 2px 14px;
            border-radius: 50px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .related-card .card-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .related-card .card-body h4 a { color: var(--text-primary); }
        .related-card .card-body h4 a:hover { color: var(--primary); }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            flex: 1;
            margin-bottom: 12px;
        }
        .related-card .card-body .meta {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            gap: 16px;
        }
        .related-card .card-body .meta i { color: var(--primary); margin-right: 4px; }

        /* ===== CTA ===== */
        .article-cta {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--secondary) 0%, #2a2a4e 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15,15,26,0.75);
        }
        .article-cta .container { position: relative; z-index: 2; }
        .article-cta h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .article-cta p {
            color: rgba(255,255,255,0.75);
            font-size: 1.05rem;
            max-width: 640px;
            margin: 0 auto 32px;
        }
        .article-cta .btn-group-wrap { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .article-cta .btn-primary {
            background: var(--primary);
            border: none;
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(224, 58, 58, 0.35);
        }
        .article-cta .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(224, 58, 58, 0.45);
        }
        .article-cta .btn-outline-light {
            border: 2px solid rgba(255,255,255,0.5);
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            color: #fff;
        }
        .article-cta .btn-outline-light:hover {
            background: rgba(255,255,255,0.15);
            border-color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Not Found ===== */
        .not-found-wrap {
            padding: 80px 0;
            text-align: center;
        }
        .not-found-wrap .icon { font-size: 4rem; color: var(--text-light); margin-bottom: 20px; }
        .not-found-wrap h2 { font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
        .not-found-wrap p { color: var(--text-light); margin-bottom: 24px; }
        .not-found-wrap .btn-primary {
            background: var(--primary);
            border: none;
            padding: 12px 36px;
            border-radius: 50px;
            font-weight: 700;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 30px;
        }
        .site-footer .footer-brand {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand i { color: var(--primary); }
        .site-footer .footer-brand span { color: var(--primary); }
        .site-footer p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.55); }
        .site-footer h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-links { display: flex; flex-direction: column; gap: 10px; }
        .footer-links a {
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links a:hover { color: var(--primary); padding-left: 4px; }
        .footer-social { display: flex; gap: 12px; margin-top: 16px; }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
        .footer-bottom {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
        }
        .footer-bottom p { margin: 0; font-size: 0.85rem; color: rgba(255,255,255,0.35); }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .navbar-nav .nav-link { padding: 10px 16px; }
            .nav-cta { margin-top: 12px; }
            .article-banner { padding: 70px 0 50px; }
            .article-banner h1 { font-size: 2rem; }
            .related-card .card-img { height: 170px; }
        }
        @media (max-width: 767px) {
            .article-banner { padding: 50px 0 40px; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-meta { gap: 12px 20px; font-size: 0.8rem; }
            .article-content { font-size: 1rem; }
            .article-footer-bar { flex-direction: column; align-items: flex-start; }
            .article-cta h2 { font-size: 1.4rem; }
            .related-posts .section-title { font-size: 1.4rem; }
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
            .article-banner .category-badge { font-size: 0.7rem; }
            .container-narrow { padding: 0 16px; }
        }
        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.3rem; }
            .article-content h2 { font-size: 1.25rem; }
            .article-content h3 { font-size: 1.1rem; }
            .article-cta .btn-primary,
            .article-cta .btn-outline-light { padding: 12px 28px; font-size: 0.9rem; width: 100%; }
            .article-cta .btn-group-wrap { flex-direction: column; align-items: center; }
            .related-card .card-img { height: 150px; }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a56db;
            --primary-dark: #0f3a8e;
            --primary-light: #3b82f6;
            --primary-gradient: linear-gradient(135deg, #1a56db 0%, #0f3a8e 100%);
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #10b981;
            --accent-light: #34d399;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --bg-gray: #f1f5f9;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-inverse: #ffffff;
            --border-color: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1), 0 4px 16px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1280px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Header / Navbar ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }
        .site-header .navbar {
            padding-top: 0;
            padding-bottom: 0;
            min-height: 72px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary) !important;
            letter-spacing: -0.5px;
            gap: 8px;
            padding: 8px 0;
        }
        .navbar-brand i {
            font-size: 1.8rem;
            color: var(--primary);
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .navbar-brand span {
            color: var(--primary);
            font-weight: 300;
        }
        .navbar-brand:hover {
            transform: scale(1.01);
        }
        .navbar-nav .nav-link {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-secondary) !important;
            padding: 24px 18px !important;
            position: relative;
            transition: var(--transition);
            letter-spacing: 0.2px;
        }
        .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: 8px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 3px;
            background: var(--primary-gradient);
            border-radius: 4px;
            transition: var(--transition);
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary) !important;
        }
        .navbar-nav .nav-link:hover::after {
            transform: translateX(-50%) scaleX(0.6);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary) !important;
        }
        .navbar-nav .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
        }
        .navbar-nav .nav-link:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: -2px;
            border-radius: var(--radius-sm);
        }
        .nav-cta .btn {
            padding: 10px 28px;
            font-size: 0.9rem;
            font-weight: 700;
            border-radius: 50px;
            background: var(--primary-gradient);
            border: none;
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.3);
            transition: var(--transition);
        }
        .nav-cta .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 86, 219, 0.4);
            background: linear-gradient(135deg, #1e60e0 0%, #0f3a8e 100%);
        }
        .nav-cta .btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.3);
        }
        .navbar-toggler {
            border: none;
            background: transparent;
            font-size: 1.6rem;
            color: var(--text-primary);
            padding: 4px 8px;
            transition: var(--transition);
        }
        .navbar-toggler:hover {
            color: var(--primary);
            transform: scale(1.1);
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: var(--primary-gradient);
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 60%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -1px;
            line-height: 1.2;
        }
        .page-banner h1 i {
            margin-right: 12px;
            opacity: 0.9;
        }
        .page-banner .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 12px;
        }
        .page-banner .breadcrumb-item {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            font-weight: 500;
        }
        .page-banner .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.85);
            transition: var(--transition);
        }
        .page-banner .breadcrumb-item a:hover {
            color: #fff;
        }
        .page-banner .breadcrumb-item.active {
            color: #fff;
        }
        .page-banner .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.5);
        }
        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 680px;
            line-height: 1.8;
        }
        .banner-decoration {
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 40%;
            height: 120%;
            background: url('/assets/images/coverpic/cover-2.png') right center / contain no-repeat;
            opacity: 0.12;
            z-index: 1;
            pointer-events: none;
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-title h2 i {
            color: var(--primary);
            margin-right: 8px;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
        }
        .section-title .title-line {
            width: 64px;
            height: 4px;
            background: var(--primary-gradient);
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* ===== Service Cards ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 36px 30px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary-gradient);
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .service-card:hover::before {
            transform: scaleX(1);
        }
        .service-card .icon-box {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-md);
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 20px;
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.2);
        }
        .service-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .service-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .service-card .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .service-card .tag {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(26, 86, 219, 0.08);
            border-radius: 50px;
            transition: var(--transition);
        }
        .service-card .tag:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== Feature Tabs ===== */
        .feature-tabs {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        .feature-tabs .nav-tabs {
            background: var(--bg-gray);
            border-bottom: 1px solid var(--border-color);
            padding: 0 16px;
        }
        .feature-tabs .nav-tabs .nav-link {
            border: none;
            border-radius: 0;
            padding: 16px 24px;
            font-weight: 600;
            color: var(--text-secondary);
            position: relative;
            transition: var(--transition);
            background: transparent;
        }
        .feature-tabs .nav-tabs .nav-link i {
            margin-right: 8px;
        }
        .feature-tabs .nav-tabs .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 3px;
            background: var(--primary-gradient);
            border-radius: 4px 4px 0 0;
            transition: var(--transition);
        }
        .feature-tabs .nav-tabs .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 86, 219, 0.04);
        }
        .feature-tabs .nav-tabs .nav-link.active {
            color: var(--primary);
            background: #fff;
        }
        .feature-tabs .nav-tabs .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
        }
        .feature-tabs .tab-content {
            padding: 36px 32px 32px;
        }
        .feature-tabs .tab-pane {
            display: flex;
            align-items: center;
            gap: 40px;
        }
        .feature-tabs .tab-pane .text-col {
            flex: 1;
        }
        .feature-tabs .tab-pane .text-col h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .feature-tabs .tab-pane .text-col p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .feature-tabs .tab-pane .text-col ul {
            list-style: none;
            padding: 0;
            margin: 0 0 16px;
        }
        .feature-tabs .tab-pane .text-col ul li {
            padding: 6px 0;
            font-size: 0.95rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feature-tabs .tab-pane .text-col ul li i {
            color: var(--accent);
            font-size: 0.9rem;
        }
        .feature-tabs .tab-pane .img-col {
            flex: 0 0 280px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .feature-tabs .tab-pane .img-col img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }
        .feature-tabs .tab-pane .img-col:hover img {
            transform: scale(1.05);
        }

        /* ===== Process Steps ===== */
        .process-section {
            background: var(--bg-white);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 48px;
            left: 10%;
            right: 10%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-light), var(--primary), var(--primary-light));
            border-radius: 4px;
            z-index: 0;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 12px;
        }
        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            margin: 0 auto 20px;
            box-shadow: 0 4px 20px rgba(26, 86, 219, 0.3);
            transition: var(--transition);
        }
        .step-item:hover .step-number {
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(26, 86, 219, 0.4);
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-list .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .faq-list .accordion-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-list .accordion-button {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            padding: 18px 24px;
            background: transparent;
            box-shadow: none;
            border: none;
            transition: var(--transition);
        }
        .faq-list .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(26, 86, 219, 0.04);
        }
        .faq-list .accordion-button::after {
            background-size: 1rem;
            transition: var(--transition);
        }
        .faq-list .accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary-light);
        }
        .faq-list .accordion-body {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-gradient);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .cta-section .btn-cta {
            padding: 14px 48px;
            font-size: 1.1rem;
            font-weight: 700;
            border-radius: 50px;
            background: #fff;
            color: var(--primary);
            border: none;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
            background: var(--secondary);
            color: var(--text-primary);
        }
        .cta-section .btn-cta:active {
            transform: translateY(0);
        }
        .cta-section .cta-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 40px;
        }
        .cta-section .cta-stats .stat-item {
            text-align: center;
            color: #fff;
        }
        .cta-section .cta-stats .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            display: block;
            line-height: 1.2;
        }
        .cta-section .cta-stats .stat-label {
            font-size: 0.9rem;
            opacity: 0.8;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
            font-size: 0.95rem;
        }
        .site-footer .footer-brand {
            display: inline-flex;
            align-items: center;
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff !important;
            gap: 10px;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            transition: var(--transition);
        }
        .site-footer .footer-brand i {
            font-size: 1.8rem;
            color: var(--secondary);
        }
        .site-footer .footer-brand span {
            color: var(--secondary);
            font-weight: 300;
        }
        .site-footer .footer-brand:hover {
            opacity: 0.9;
            transform: scale(1.01);
        }
        .site-footer p {
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            margin-bottom: 12px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .site-footer .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 4px 16px rgba(26, 86, 219, 0.4);
        }
        .site-footer h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .site-footer h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            background: var(--secondary);
            border-radius: 4px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .site-footer .footer-links a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .site-footer .footer-links a:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            margin-top: 40px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .site-footer .footer-bottom p {
            margin: 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps::before {
                display: none;
            }
            .feature-tabs .tab-pane {
                flex-direction: column;
            }
            .feature-tabs .tab-pane .img-col {
                flex: 0 0 100%;
                width: 100%;
            }
            .feature-tabs .tab-pane .img-col img {
                height: 240px;
            }
            .page-banner h1 {
                font-size: 2.4rem;
            }
            .cta-section .cta-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            .site-header .navbar {
                min-height: 60px;
            }
            .navbar-nav .nav-link {
                padding: 14px 18px !important;
                border-bottom: 1px solid var(--border-light);
            }
            .navbar-nav .nav-link::after {
                display: none;
            }
            .navbar-nav .nav-link.active {
                background: rgba(26, 86, 219, 0.06);
                border-radius: var(--radius-sm);
            }
            .nav-cta .btn {
                padding: 8px 24px;
                font-size: 0.85rem;
                width: 100%;
                margin-top: 8px;
            }
            .page-banner {
                padding: 60px 0 50px;
                min-height: 260px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
            .banner-decoration {
                display: none;
            }
            .section {
                padding: 48px 0;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .service-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .service-card {
                padding: 28px 22px;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .step-item {
                padding: 0;
            }
            .feature-tabs .tab-content {
                padding: 24px 16px;
            }
            .feature-tabs .nav-tabs .nav-link {
                padding: 12px 16px;
                font-size: 0.9rem;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section .btn-cta {
                padding: 12px 32px;
                font-size: 1rem;
            }
            .cta-section .cta-stats .stat-number {
                font-size: 1.6rem;
            }
            .site-footer {
                padding: 40px 0 0;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer .footer-bottom .text-end {
                text-align: center !important;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner .breadcrumb {
                font-size: 0.8rem;
            }
            .section-title h2 {
                font-size: 1.3rem;
            }
            .service-card h3 {
                font-size: 1.1rem;
            }
            .feature-tabs .nav-tabs .nav-link {
                padding: 10px 12px;
                font-size: 0.8rem;
            }
            .feature-tabs .nav-tabs .nav-link i {
                margin-right: 4px;
            }
            .cta-section .cta-stats {
                flex-direction: column;
                gap: 16px;
            }
            .navbar-brand {
                font-size: 1.2rem;
            }
            .navbar-brand i {
                font-size: 1.4rem;
            }
        }

        /* ===== Utility ===== */
        .text-gradient {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .bg-gradient-primary {
            background: var(--primary-gradient);
        }
        .shadow-hover {
            transition: var(--transition);
        }
        .shadow-hover:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .rounded-custom {
            border-radius: var(--radius-md);
        }
        .btn-outline-primary {
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }