/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e3a5f;
            --primary-dark: #0f2440;
            --primary-light: #2d5a8a;
            --accent: #f0a500;
            --accent-hover: #d49100;
            --accent-light: #fff3d6;
            --bg-body: #f7f8fc;
            --bg-white: #ffffff;
            --bg-light: #eef1f7;
            --bg-dark: #0f2440;
            --text-primary: #1a1a2e;
            --text-body: #2d3436;
            --text-muted: #636e72;
            --text-light: #f8f9fa;
            --border-color: #e2e8f0;
            --border-light: #f0f2f5;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --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 50px rgba(0,0,0,0.10);
            --shadow-accent: 0 8px 30px rgba(240,165,0,0.25);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height: 72px;
            --container-max: 1200px;
        }

        /* ===== 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-sans);
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 1rem;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-light); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        h1, h2, h3, h4, h5, h6 { color: var(--text-primary); font-weight: 700; line-height: 1.3; letter-spacing: -0.01em; }
        .container { max-width: var(--container-max); padding-left: 20px; padding-right: 20px; margin: 0 auto; width: 100%; }
        .container-fluid { padding-left: 24px; padding-right: 24px; }

        /* ===== 徽章 / 标签 ===== */
        .badge-custom {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 50px;
            background: var(--accent-light);
            color: var(--accent-hover);
            letter-spacing: 0.3px;
            text-transform: uppercase;
        }
        .badge-primary {
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .badge-outline {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 500;
        }

        /* ===== 按钮 ===== */
        .btn {
            font-weight: 600;
            border-radius: 50px;
            padding: 10px 28px;
            transition: all var(--transition);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.95rem;
            letter-spacing: 0.2px;
        }
        .btn-primary-custom {
            background: var(--accent);
            color: #1a1a2e;
            box-shadow: var(--shadow-accent);
        }
        .btn-primary-custom:hover {
            background: var(--accent-hover);
            color: #1a1a2e;
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(240,165,0,0.35);
        }
        .btn-outline-custom {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-light-custom {
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(4px);
            color: #fff;
            border: 1px solid rgba(255,255,255,0.25);
        }
        .btn-light-custom:hover {
            background: rgba(255,255,255,0.25);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm { padding: 6px 18px; font-size: 0.85rem; }
        .btn-lg { padding: 14px 36px; font-size: 1.05rem; }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid rgba(226,232,240,0.6);
            transition: background var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .site-logo i { color: var(--accent); font-size: 1.5rem; }
        .site-logo:hover { color: var(--primary); }
        .navbar-nav { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
        .navbar-nav .nav-item { margin: 0; }
        .navbar-nav .nav-link {
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-muted);
            transition: all var(--transition);
            position: relative;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: var(--bg-light);
        }
        .navbar-nav .nav-link.active { font-weight: 700; color: var(--primary); }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 50px;
            padding: 6px 16px;
            gap: 8px;
            border: 1px solid transparent;
            transition: all var(--transition);
            min-width: 180px;
        }
        .nav-search:focus-within {
            border-color: var(--accent);
            background: var(--bg-white);
            box-shadow: 0 0 0 4px rgba(240,165,0,0.10);
        }
        .nav-search i { color: var(--text-muted); font-size: 0.9rem; }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.9rem;
            padding: 4px 0;
            width: 100%;
            color: var(--text-primary);
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .navbar-toggler {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
        }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            min-height: 80vh;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-body), transparent);
        }
        .hero-content { position: relative; z-index: 2; }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            border-radius: 50px;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            border: 1px solid rgba(255,255,255,0.08);
        }
        .hero-title {
            font-size: clamp(2.4rem, 6vw, 4rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }
        .hero-title span { color: var(--accent); }
        .hero-sub {
            font-size: clamp(1.05rem, 1.8vw, 1.25rem);
            color: rgba(255,255,255,0.75);
            max-width: 580px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.10);
        }
        .hero-stat h3 { font-size: 1.8rem; font-weight: 800; color: #fff; margin-bottom: 2px; }
        .hero-stat p { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin: 0; }
        .hero-image {
            position: relative;
            z-index: 2;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            max-width: 100%;
            height: auto;
            border: 1px solid rgba(255,255,255,0.08);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .badge-custom { margin-bottom: 12px; }
        .section-header h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-header.text-start { text-align: left; }
        .section-header.text-start p { margin: 0; }

        /* ===== 卡片通用 ===== */
        .card-custom {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 24px;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .card-custom .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent);
            background: var(--accent-light);
            margin-bottom: 16px;
        }
        .card-custom h5 { font-weight: 700; margin-bottom: 8px; font-size: 1.15rem; }
        .card-custom p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 0; line-height: 1.6; }

        /* ===== 特色/图标网格 ===== */
        .features-grid { display: grid; gap: 24px; }
        .features-grid-3 { grid-template-columns: repeat(3, 1fr); }
        .features-grid-4 { grid-template-columns: repeat(4, 1fr); }
        .features-grid-2 { grid-template-columns: repeat(2, 1fr); }

        /* ===== 内容卡片（带图） ===== */
        .content-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .content-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .content-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .card-body .badge-custom { align-self: flex-start; margin-bottom: 10px; }
        .content-card .card-body h5 { font-weight: 700; margin-bottom: 8px; font-size: 1.1rem; }
        .content-card .card-body p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 12px; flex: 1; }
        .content-card .card-body .meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
            align-items: center;
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
            margin-top: auto;
        }
        .content-card .card-body .meta i { margin-right: 4px; }

        /* ===== 分类入口卡片 ===== */
        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .category-card .cat-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--accent-hover);
            margin-bottom: 16px;
            transition: all var(--transition);
        }
        .category-card:hover .cat-icon { background: var(--accent); color: #fff; }
        .category-card h5 { font-weight: 700; margin-bottom: 6px; }
        .category-card p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== 数据/统计 ===== */
        .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .stat-card:hover { box-shadow: var(--shadow-md); }
        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-card .stat-number span { color: var(--accent); }
        .stat-card p { color: var(--text-muted); font-size: 0.9rem; margin-top: 4px; margin-bottom: 0; }

        /* ===== 流程/步骤 ===== */
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .step-item:last-child { border-bottom: none; }
        .step-number {
            width: 44px;
            height: 44px;
            min-width: 44px;
            border-radius: 50%;
            background: var(--accent);
            color: #1a1a2e;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-content h5 { font-weight: 700; margin-bottom: 4px; }
        .step-content p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
        .faq-item h6 {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
        }
        .faq-item h6 i { color: var(--accent); font-size: 0.9rem; }
        .faq-item p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 0; padding-left: 24px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-content { position: relative; z-index: 2; text-align: center; }
        .cta-content h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 800; color: #fff; margin-bottom: 16px; }
        .cta-content p { color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 28px; font-size: 1.05rem; }
        .cta-content .btn { font-size: 1.05rem; padding: 14px 40px; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.65);
            padding: 48px 0 24px;
        }
        .site-footer h6 { color: #fff; font-weight: 700; margin-bottom: 16px; font-size: 1rem; }
        .site-footer a { color: rgba(255,255,255,0.6); }
        .site-footer a:hover { color: var(--accent); }
        .site-footer .footer-links { list-style: none; padding: 0; margin: 0; }
        .site-footer .footer-links li { margin-bottom: 8px; }
        .site-footer .footer-links a { font-size: 0.9rem; }
        .site-footer .footer-brand { font-size: 1.2rem; font-weight: 800; color: #fff; margin-bottom: 12px; display: block; }
        .site-footer .footer-brand i { color: var(--accent); }
        .site-footer .footer-text { font-size: 0.88rem; line-height: 1.7; max-width: 320px; }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            margin-top: 36px;
            text-align: center;
            font-size: 0.82rem;
        }
        .site-footer .social-links { display: flex; gap: 12px; margin-top: 12px; }
        .site-footer .social-links a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.6);
            transition: all var(--transition);
        }
        .site-footer .social-links a:hover { background: var(--accent); color: #1a1a2e; }

        /* ===== 列表区域 ===== */
        .list-group-item-custom {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            margin-bottom: 10px;
            transition: all var(--transition);
        }
        .list-group-item-custom:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
        .list-group-item-custom .list-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-hover);
            font-size: 0.9rem;
        }
        .list-group-item-custom .list-text { flex: 1; }
        .list-group-item-custom .list-text h6 { font-weight: 600; margin-bottom: 2px; font-size: 0.95rem; }
        .list-group-item-custom .list-text p { color: var(--text-muted); font-size: 0.82rem; margin-bottom: 0; }
        .list-group-item-custom .list-meta { font-size: 0.78rem; color: var(--text-muted); white-space: nowrap; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid-4 { grid-template-columns: repeat(2, 1fr); }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
        }
        @media (max-width: 991px) {
            .navbar-toggler { display: block; }
            .navbar-collapse {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                padding: 20px 24px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                display: none;
                max-height: 70vh;
                overflow-y: auto;
            }
            .navbar-collapse.show { display: block; }
            .navbar-nav { flex-direction: column; gap: 2px; }
            .navbar-nav .nav-link { padding: 12px 16px; width: 100%; border-radius: var(--radius-sm); }
            .nav-search { min-width: auto; flex: 1; }
            .nav-actions .btn { display: none; }
            .mobile-visible { display: flex !important; }
        }
        @media (max-width: 768px) {
            :root { --nav-height: 64px; }
            .section { padding: 56px 0; }
            .hero-section { padding: 100px 0 56px; min-height: auto; }
            .hero-title { font-size: clamp(1.8rem, 5vw, 2.4rem); }
            .hero-stats { gap: 16px; padding-top: 20px; margin-top: 28px; flex-direction: column; }
            .hero-stat h3 { font-size: 1.4rem; }
            .features-grid-3, .features-grid-4 { grid-template-columns: 1fr; }
            .section-header h2 { font-size: 1.6rem; }
            .content-card .card-img { height: 160px; }
            .stat-card .stat-number { font-size: 2rem; }
            .nav-actions .btn { display: none; }
            .site-footer .row > div { margin-bottom: 24px; }
        }
        @media (max-width: 520px) {
            .container { padding-left: 16px; padding-right: 16px; }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .category-card { padding: 20px 16px; }
            .card-custom { padding: 18px; }
            .faq-item { padding: 16px 18px; }
            .list-group-item-custom { flex-wrap: wrap; }
        }

        /* ===== 工具类 ===== */
        .text-accent { color: var(--accent) !important; }
        .bg-accent-light { background: var(--accent-light) !important; }
        .gap-2 { gap: 8px; }
        .gap-3 { gap: 16px; }
        .gap-4 { gap: 24px; }
        .mt-1 { margin-top: 8px; }
        .mt-2 { margin-top: 16px; }
        .mt-3 { margin-top: 24px; }
        .mt-4 { margin-top: 32px; }
        .mb-1 { margin-bottom: 8px; }
        .mb-2 { margin-bottom: 16px; }
        .mb-3 { margin-bottom: 24px; }
        .mb-4 { margin-bottom: 32px; }
        .fw-700 { font-weight: 700; }
        .text-center { text-align: center; }
        .text-muted { color: var(--text-muted); }
        .rounded-full { border-radius: 50px; }
        .shadow-hover { transition: box-shadow var(--transition); }
        .shadow-hover:hover { box-shadow: var(--shadow-md); }
        .border-accent { border-color: var(--accent) !important; }
        .no-list-style { list-style: none; padding: 0; margin: 0; }

        /* ===== CMS 列表占位 ===== */
        .cms-list-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }
        .cms-list-empty i { font-size: 2.4rem; color: var(--border-color); margin-bottom: 12px; display: block; }

/* roulang page: article */
:root {
            --primary: #c0392b;
            --primary-dark: #a93226;
            --primary-light: #e74c3c;
            --primary-gradient: linear-gradient(135deg, #c0392b, #e74c3c);
            --secondary: #2c3e50;
            --secondary-light: #34495e;
            --accent: #f39c12;
            --accent-light: #f1c40f;
            --bg-body: #f8f5f2;
            --bg-white: #ffffff;
            --bg-light: #f0ebe6;
            --bg-dark: #1a1a2e;
            --text-dark: #1e1e2a;
            --text-body: #3d3d4a;
            --text-muted: #7a7a8a;
            --text-light: #f0f0f0;
            --border-color: #e5ddd8;
            --border-light: #f0ebe6;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 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-body);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        .container { max-width: 1280px; padding: 0 24px; margin: 0 auto; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* Header & Navigation */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: var(--shadow-sm);
            backdrop-filter: blur(12px);
            background: rgba(255,255,255,0.96);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
            letter-spacing: -0.5px;
            text-decoration: none !important;
        }
        .site-logo i { font-size: 1.6rem; color: var(--accent); }
        .site-logo:hover { color: var(--primary-dark); }
        .navbar-toggler {
            background: none;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 1.3rem;
            color: var(--text-dark);
            cursor: pointer;
            display: none;
            transition: var(--transition);
        }
        .navbar-toggler:hover { background: var(--bg-light); }
        .navbar-collapse { display: flex; align-items: center; flex: 1; justify-content: center; }
        .navbar-nav {
            display: flex;
            list-style: none;
            gap: 4px;
            margin: 0;
            padding: 0;
        }
        .nav-item .nav-link {
            padding: 8px 20px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            text-decoration: none !important;
            position: relative;
        }
        .nav-item .nav-link:hover { background: var(--bg-light); color: var(--primary); }
        .nav-item .nav-link.active { background: var(--primary); color: #fff; }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: var(--radius-xl);
            padding: 6px 16px;
            border: 1px solid transparent;
            transition: var(--transition);
            min-width: 200px;
        }
        .nav-search:focus-within { border-color: var(--primary); background: var(--bg-white); box-shadow: 0 0 0 4px rgba(192,57,43,0.1); }
        .nav-search i { color: var(--text-muted); font-size: 0.9rem; margin-right: 10px; }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.9rem;
            color: var(--text-dark);
            width: 100%;
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .btn-primary-custom {
            background: var(--primary-gradient);
            color: #fff;
            border: none;
            padding: 10px 28px;
            border-radius: var(--radius-xl);
            font-weight: 700;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(192,57,43,0.35);
            text-decoration: none !important;
        }
        .btn-primary-custom:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(192,57,43,0.45); color: #fff; }
        .btn-primary-custom.btn-sm { padding: 7px 20px; font-size: 0.85rem; }
        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 9px 26px;
            border-radius: var(--radius-xl);
            font-weight: 700;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            text-decoration: none !important;
        }
        .btn-outline-custom:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        @media (max-width: 992px) {
            .navbar-toggler { display: block; }
            .navbar-collapse {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                border-bottom: 2px solid var(--border-color);
                padding: 20px 24px;
                box-shadow: var(--shadow-md);
                flex-direction: column;
                align-items: stretch;
                z-index: 1040;
            }
            .navbar-collapse.show { display: flex; }
            .navbar-nav { flex-direction: column; gap: 8px; }
            .nav-item .nav-link { padding: 12px 16px; }
            .nav-actions { display: none; }
            .nav-search { min-width: unset; flex: 1; }
        }
        @media (max-width: 576px) {
            .site-header .container { height: 64px; }
            .site-logo { font-size: 1.2rem; }
            .site-logo i { font-size: 1.3rem; }
        }

        /* Article Hero / Banner */
        .article-hero {
            background: linear-gradient(135deg, #1a1a2e 0%, #2c3e50 50%, #1a1a2e 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
            border-bottom: 4px solid var(--primary);
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero-breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 24px;
            align-items: center;
        }
        .article-hero-breadcrumb a { color: rgba(255,255,255,0.8); text-decoration: none; transition: var(--transition); }
        .article-hero-breadcrumb a:hover { color: var(--accent); }
        .article-hero-breadcrumb .sep { color: rgba(255,255,255,0.4); }
        .article-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 20px;
            max-width: 900px;
            letter-spacing: -1px;
        }
        .article-hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            color: rgba(255,255,255,0.75);
            font-size: 0.95rem;
            align-items: center;
        }
        .article-hero-meta .badge-custom {
            background: var(--primary);
            color: #fff;
            padding: 4px 16px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 0.8rem;
        }
        .article-hero-meta i { margin-right: 6px; color: var(--accent); }
        @media (max-width: 768px) {
            .article-hero { padding: 60px 0 40px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-hero-meta { gap: 10px 16px; font-size: 0.85rem; }
        }
        @media (max-width: 576px) {
            .article-hero h1 { font-size: 1.5rem; }
        }

        /* Article Main Content */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-content-wrapper {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 48px;
            border: 1px solid var(--border-color);
        }
        .article-content-wrapper .content-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-content-wrapper .content-body h2,
        .article-content-wrapper .content-body h3,
        .article-content-wrapper .content-body h4 {
            color: var(--text-dark);
            font-weight: 700;
            margin-top: 40px;
            margin-bottom: 16px;
        }
        .article-content-wrapper .content-body h2 { font-size: 1.8rem; border-bottom: 2px solid var(--border-light); padding-bottom: 12px; }
        .article-content-wrapper .content-body h3 { font-size: 1.4rem; }
        .article-content-wrapper .content-body p { margin-bottom: 20px; }
        .article-content-wrapper .content-body ul, .article-content-wrapper .content-body ol { margin-bottom: 20px; padding-left: 24px; }
        .article-content-wrapper .content-body li { margin-bottom: 8px; }
        .article-content-wrapper .content-body a { color: var(--primary); font-weight: 600; text-decoration: underline; }
        .article-content-wrapper .content-body a:hover { color: var(--primary-dark); }
        .article-content-wrapper .content-body img { border-radius: var(--radius-md); margin: 32px 0; box-shadow: var(--shadow-md); }
        .article-content-wrapper .content-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-light);
            padding: 20px 28px;
            margin: 28px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-muted);
        }
        .article-content-wrapper .content-body .table-wrap { overflow-x: auto; margin: 32px 0; }
        .article-content-wrapper .content-body table { width: 100%; border-collapse: collapse; border-radius: var(--radius-sm); overflow: hidden; }
        .article-content-wrapper .content-body th, .article-content-wrapper .content-body td { padding: 12px 16px; border: 1px solid var(--border-color); text-align: left; }
        .article-content-wrapper .content-body th { background: var(--bg-light); font-weight: 700; color: var(--text-dark); }
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found i { font-size: 4rem; color: var(--text-muted); margin-bottom: 24px; }
        .article-not-found h2 { font-size: 2rem; color: var(--text-dark); margin-bottom: 12px; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 24px; }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-tags .tag {
            background: var(--bg-light);
            color: var(--text-body);
            padding: 6px 18px;
            border-radius: var(--radius-xl);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
            text-decoration: none !important;
        }
        .article-tags .tag:hover { background: var(--primary); color: #fff; }
        .article-share {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-share span { font-weight: 700; color: var(--text-dark); }
        .article-share a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-light);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-body);
            transition: var(--transition);
            text-decoration: none !important;
            font-size: 1.1rem;
        }
        .article-share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        @media (max-width: 768px) {
            .article-content-wrapper { padding: 24px; }
            .article-content-wrapper .content-body { font-size: 1rem; }
            .article-content-wrapper .content-body h2 { font-size: 1.4rem; }
        }
        @media (max-width: 576px) {
            .article-main { padding: 40px 0; }
            .article-content-wrapper { padding: 16px; }
        }

        /* Related Articles */
        .related-section {
            background: var(--bg-white);
            padding: 60px 0;
            border-top: 1px solid var(--border-color);
        }
        .related-section .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .related-section .section-sub { color: var(--text-muted); margin-bottom: 36px; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            text-decoration: none !important;
            color: inherit;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
        .related-card .card-img {
            height: 180px;
            background: var(--bg-light) center/cover no-repeat;
            position: relative;
        }
        .related-card .card-img .badge-custom {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            padding: 3px 14px;
            border-radius: var(--radius-xl);
            font-size: 0.75rem;
            font-weight: 600;
        }
        .related-card .card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
        .related-card .card-body h5 { font-size: 1.1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; line-height: 1.4; }
        .related-card .card-body p { font-size: 0.9rem; color: var(--text-muted); flex: 1; }
        .related-card .card-body .card-meta { font-size: 0.8rem; color: var(--text-muted); display: flex; gap: 12px; margin-top: 12px; }
        @media (max-width: 992px) { .related-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 576px) { .related-grid { grid-template-columns: 1fr; } }

        /* CTA */
        .cta-section {
            background: var(--primary-gradient);
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 2.2rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
        .cta-section p { font-size: 1.1rem; color: rgba(255,255,255,0.85); max-width: 700px; margin: 0 auto 32px; }
        .cta-section .btn-cta {
            background: #fff;
            color: var(--primary);
            padding: 14px 48px;
            border-radius: var(--radius-xl);
            font-weight: 800;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
            box-shadow: 0 8px 30px rgba(0,0,0,0.2);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            text-decoration: none !important;
        }
        .cta-section .btn-cta:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.3); background: var(--accent-light); color: var(--text-dark); }
        @media (max-width: 768px) { .cta-section h2 { font-size: 1.6rem; } .cta-section p { font-size: 1rem; } }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 0;
            border-top: 4px solid var(--primary);
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none !important;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand i { color: var(--accent); }
        .site-footer .footer-text { font-size: 0.95rem; line-height: 1.7; margin-bottom: 20px; max-width: 360px; color: rgba(255,255,255,0.65); }
        .site-footer .social-links { display: flex; gap: 14px; }
        .site-footer .social-links a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.7);
            transition: var(--transition);
            text-decoration: none !important;
            font-size: 1.15rem;
        }
        .site-footer .social-links a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .site-footer h6 { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 18px; letter-spacing: 0.5px; }
        .site-footer .footer-links { list-style: none; padding: 0; margin: 0; }
        .site-footer .footer-links li { margin-bottom: 10px; }
        .site-footer .footer-links a { color: rgba(255,255,255,0.65); text-decoration: none !important; font-size: 0.9rem; transition: var(--transition); }
        .site-footer .footer-links a:hover { color: var(--accent); padding-left: 4px; }
        .site-footer .footer-links i { color: var(--accent); margin-right: 6px; width: 18px; text-align: center; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 24px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.45);
        }
        @media (max-width: 768px) {
            .site-footer .row > div { margin-bottom: 32px; }
            .site-footer .footer-brand { font-size: 1.3rem; }
        }

        /* Back to top */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            border: none;
            font-size: 1.3rem;
            box-shadow: var(--shadow-md);
            cursor: pointer;
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            z-index: 1060;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .back-to-top.show { opacity: 1; visibility: visible; }
        .back-to-top:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

        /* Utility */
        .text-primary-custom { color: var(--primary); }
        .bg-primary-custom { background: var(--primary-gradient); }
        .gap-2 { gap: 8px; }
        .gap-3 { gap: 16px; }
        .mt-2 { margin-top: 8px; }
        .mt-3 { margin-top: 16px; }
        .mt-4 { margin-top: 24px; }
        .mb-2 { margin-bottom: 8px; }
        .mb-3 { margin-bottom: 16px; }
        .mb-4 { margin-bottom: 24px; }
        .fw-700 { font-weight: 700; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #b8860b;
            --primary-light: #d4a843;
            --primary-dark: #8b6508;
            --secondary: #2d2d2d;
            --accent: #c93c20;
            --accent-light: #e86040;
            --bg-light: #faf8f4;
            --bg-dark: #1a1a1a;
            --bg-card: #ffffff;
            --text-dark: #1e1e1e;
            --text-body: #333333;
            --text-muted: #777777;
            --text-light: #ffffff;
            --border-color: #e8e0d0;
            --border-light: #f0ebe0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 16px 48px rgba(184, 134, 11, 0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-light);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        ul,
        ol {
            padding-left: 0;
            list-style: none;
            margin-bottom: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
            margin-bottom: 0.5rem;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 0;
            box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            flex-wrap: nowrap;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.3px;
            white-space: nowrap;
            transition: var(--transition);
        }
        .site-logo i {
            font-size: 1.5rem;
            color: var(--primary);
        }
        .site-logo:hover {
            color: var(--primary);
            transform: scale(1.02);
        }

        .navbar-toggler {
            display: none;
            background: none;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 1.2rem;
            color: var(--text-dark);
            cursor: pointer;
            transition: var(--transition);
        }
        .navbar-toggler:hover {
            background: var(--border-light);
        }

        .navbar-collapse {
            display: flex;
            align-items: center;
            flex: 1 1 auto;
            justify-content: center;
        }

        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-item .nav-link {
            display: block;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-item .nav-link:hover {
            color: var(--primary);
            background: rgba(184, 134, 11, 0.06);
        }
        .nav-item .nav-link.active {
            color: var(--primary-dark);
            background: rgba(184, 134, 11, 0.10);
            font-weight: 600;
        }
        .nav-item .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--border-light);
            border-radius: 40px;
            padding: 6px 16px 6px 14px;
            border: 1px solid transparent;
            transition: var(--transition);
            min-width: 180px;
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(184, 134, 11, 0.12);
        }
        .nav-search i {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-right: 8px;
        }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            padding: 4px 0;
            font-size: 0.9rem;
            color: var(--text-dark);
            width: 100%;
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 10px 24px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(184, 134, 11, 0.35);
        }
        .btn-primary-custom:active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(184, 134, 11, 0.25);
        }
        .btn-primary-custom.btn-sm {
            padding: 7px 18px;
            font-size: 0.85rem;
        }

        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: 40px;
            padding: 10px 24px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(184, 134, 11, 0.25);
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, #2d2d2d 0%, #1a1a1a 50%, #2d2d2d 100%);
            padding: 80px 0 70px;
            text-align: center;
            overflow: hidden;
            min-height: 320px;
            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: 0.25;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0, 0, 0, 0.30) 0%, rgba(0, 0, 0, 0.60) 100%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }
        .page-banner p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .page-banner .banner-badges {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .page-banner .banner-badges .badge {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            color: #fff;
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.10);
        }

        /* ===== Section Spacing ===== */
        section {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
            text-align: center;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }

        /* ===== Download Channels ===== */
        .channel-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 36px 28px 32px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .channel-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .channel-card .channel-icon {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 2rem;
            color: #fff;
        }
        .channel-card .channel-icon.android {
            background: linear-gradient(135deg, #3ddc84, #1a8c4a);
        }
        .channel-card .channel-icon.ios {
            background: linear-gradient(135deg, #007aff, #5856d6);
        }
        .channel-card .channel-icon.web {
            background: linear-gradient(135deg, #f7b731, #d4a017);
        }
        .channel-card h5 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .channel-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.6;
        }
        .channel-card .btn {
            border-radius: 40px;
            padding: 8px 24px;
            font-weight: 600;
        }

        /* ===== Version Features ===== */
        .version-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .version-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .version-card .version-tag {
            display: inline-block;
            background: rgba(184, 134, 11, 0.12);
            color: var(--primary-dark);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 40px;
            margin-bottom: 14px;
            align-self: flex-start;
        }
        .version-card h5 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .version-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }
        .version-card .version-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
            display: flex;
            justify-content: space-between;
        }

        /* ===== Guide Steps ===== */
        .step-item {
            display: flex;
            gap: 24px;
            padding: 28px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 4px 14px rgba(184, 134, 11, 0.30);
        }
        .step-content {
            flex: 1;
        }
        .step-content h5 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-content p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
        }
        .faq-item .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-item .faq-answer {
            margin-top: 12px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 70px 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: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-cta {
            background: #fff;
            color: var(--primary-dark);
            border: none;
            border-radius: 40px;
            padding: 14px 40px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
            background: #f5f0e8;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 30px;
            font-size: 0.92rem;
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .site-footer .footer-brand i {
            color: var(--primary-light);
        }
        .site-footer .footer-brand:hover {
            color: var(--primary-light);
        }
        .site-footer .footer-text {
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 320px;
        }
        .site-footer .social-links {
            display: flex;
            gap: 14px;
        }
        .site-footer .social-links 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 .social-links a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .site-footer h6 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .site-footer .footer-links i {
            color: var(--primary-light);
            width: 20px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-search {
                min-width: 140px;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                height: 60px;
            }
            .navbar-toggler {
                display: block;
                order: 3;
            }
            .navbar-collapse {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                padding: 16px 20px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                flex-direction: column;
                align-items: stretch;
                z-index: 1040;
            }
            .navbar-collapse.show {
                display: flex;
            }
            .navbar-nav {
                flex-direction: column;
                gap: 2px;
                width: 100%;
            }
            .nav-item .nav-link {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .nav-item .nav-link.active::after {
                display: none;
            }
            .nav-actions {
                display: none;
            }
            .page-banner {
                padding: 60px 0 50px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
            section {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
            .step-item {
                gap: 16px;
                padding: 20px 0;
                flex-direction: column;
            }
            .step-number {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .btn-cta {
                padding: 12px 30px;
                font-size: 0.95rem;
            }
            .site-footer {
                padding: 40px 0 24px;
            }
            .site-footer .footer-brand {
                font-size: 1.15rem;
            }
        }

        @media (max-width: 520px) {
            .site-header .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .site-logo {
                font-size: 1.1rem;
            }
            .site-logo i {
                font-size: 1.2rem;
            }
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner p {
                font-size: 0.9rem;
            }
            .page-banner .banner-badges .badge {
                font-size: 0.78rem;
                padding: 6px 14px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .channel-card {
                padding: 24px 18px 22px;
            }
            .version-card {
                padding: 20px 16px;
            }
            .faq-item {
                padding: 16px 18px;
            }
            .cta-section {
                padding: 50px 20px;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .site-footer .footer-bottom {
                font-size: 0.78rem;
            }
        }