/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88a20;
            --bg-body: #f5f7fa;
            --bg-white: #ffffff;
            --bg-section-alt: #eef2f7;
            --bg-dark: #0f1a2e;
            --text-primary: #1a2a3a;
            --text-body: #3a4a5a;
            --text-muted: #7a8a9a;
            --text-light: #f0f4f8;
            --border-color: #dce2ea;
            --border-light: #e8edf3;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-accent: 0 4px 20px rgba(232,168,56,0.25);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
        }

        /* ===== 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-family);
            color: var(--text-body);
            background: var(--bg-body);
            line-height: 1.7;
            font-size: 16px;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-primary); font-weight: 700; line-height: 1.3; margin-bottom: 0.5rem; }
        p { margin-bottom: 0; }
        .container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }

        /* ===== Utility ===== */
        .section-padding { padding: var(--spacing-section) 0; }
        .section-padding-sm { padding: 48px 0; }
        .bg-section-alt { background: var(--bg-section-alt); }
        .bg-dark-section { background: var(--bg-dark); color: var(--text-light); }
        .bg-dark-section h2, .bg-dark-section h3, .bg-dark-section .section-title { color: #ffffff; }
        .section-title { font-size: 2rem; font-weight: 800; margin-bottom: 0.5rem; letter-spacing: -0.02em; }
        .section-subtitle { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 2.5rem; max-width: 600px; }
        .section-header { text-align: center; margin-bottom: 3rem; }
        .section-header .section-subtitle { margin-left: auto; margin-right: auto; }
        .text-accent { color: var(--accent); }
        .badge-custom { background: var(--accent); color: #1a2a3a; font-weight: 600; font-size: 0.8rem; padding: 0.3rem 0.9rem; border-radius: 50px; display: inline-block; }

        /* ===== Header & Nav (双层) ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 2px 12px rgba(0,0,0,0.03);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.6rem 0;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .logo { font-size: 1.5rem; font-weight: 800; color: var(--primary); letter-spacing: -0.03em; line-height: 1.2; }
        .logo:hover { color: var(--accent); }
        .logo span { color: var(--accent); }
        .header-actions { display: flex; align-items: center; gap: 0.8rem; }
        .header-actions .btn-outline-primary { border-color: var(--primary); color: var(--primary); border-radius: 50px; padding: 0.3rem 1.2rem; font-size: 0.9rem; font-weight: 600; }
        .header-actions .btn-outline-primary:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
        .header-actions .btn-accent { background: var(--accent); color: #1a2a3a; border-radius: 50px; padding: 0.3rem 1.4rem; font-size: 0.9rem; font-weight: 700; border: none; }
        .header-actions .btn-accent:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: var(--shadow-accent); }
        .search-box { display: flex; align-items: center; background: var(--bg-body); border-radius: 50px; padding: 0.2rem 0.2rem 0.2rem 1rem; border: 1px solid var(--border-light); transition: var(--transition); }
        .search-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232,168,56,0.15); }
        .search-box input { border: none; background: transparent; padding: 0.4rem 0; font-size: 0.9rem; color: var(--text-primary); width: 140px; outline: none; }
        .search-box input::placeholder { color: var(--text-muted); }
        .search-box button { background: var(--accent); border: none; color: #1a2a3a; border-radius: 50px; padding: 0.35rem 0.9rem; font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: var(--transition); }
        .search-box button:hover { background: var(--accent-light); }

        .nav-tabs-custom {
            display: flex;
            gap: 0.25rem;
            padding: 0.3rem 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            flex-wrap: nowrap;
        }
        .nav-tabs-custom::-webkit-scrollbar { display: none; }
        .nav-tabs-custom .nav-item { white-space: nowrap; }
        .nav-tabs-custom .nav-link {
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-muted);
            background: transparent;
            border: none;
            transition: var(--transition);
        }
        .nav-tabs-custom .nav-link:hover { color: var(--primary); background: rgba(26,58,92,0.06); }
        .nav-tabs-custom .nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 2px 12px rgba(26,58,92,0.15); }
        .nav-tabs-custom .nav-link.active:hover { background: var(--primary-light); }

        /* ===== Hero ===== */
        .hero-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 40%, var(--primary-light) 100%);
            padding: 80px 0 70px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -30%; right: -10%; width: 500px; height: 500px;
            background: radial-gradient(circle, rgba(232,168,56,0.12) 0%, transparent 70%);
            border-radius: 50%;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -20%; left: -5%; width: 400px; height: 400px;
            background: radial-gradient(circle, rgba(255,255,255,0.04) 0%, transparent 70%);
            border-radius: 50%;
        }
        .hero-content { position: relative; z-index: 2; }
        .hero-badge { display: inline-block; background: rgba(232,168,56,0.2); color: var(--accent-light); font-weight: 600; font-size: 0.85rem; padding: 0.3rem 1.2rem; border-radius: 50px; margin-bottom: 1.2rem; border: 1px solid rgba(232,168,56,0.2); }
        .hero-title { font-size: 2.8rem; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 1rem; letter-spacing: -0.02em; }
        .hero-title span { color: var(--accent); }
        .hero-desc { font-size: 1.15rem; color: rgba(255,255,255,0.8); max-width: 580px; margin-bottom: 2rem; line-height: 1.7; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
        .hero-actions .btn-primary-custom { background: var(--accent); color: #1a2a3a; border: none; border-radius: 50px; padding: 0.75rem 2.2rem; font-weight: 700; font-size: 1.05rem; transition: var(--transition); }
        .hero-actions .btn-primary-custom:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: var(--shadow-accent); }
        .hero-actions .btn-outline-light-custom { border: 2px solid rgba(255,255,255,0.3); color: #fff; border-radius: 50px; padding: 0.7rem 2rem; font-weight: 600; transition: var(--transition); background: transparent; }
        .hero-actions .btn-outline-light-custom:hover { border-color: var(--accent); color: var(--accent); background: rgba(232,168,56,0.08); }
        .hero-stats { display: flex; gap: 2.5rem; margin-top: 2.8rem; flex-wrap: wrap; }
        .hero-stat-item { text-align: center; }
        .hero-stat-item .num { font-size: 2rem; font-weight: 800; color: #fff; line-height: 1.2; }
        .hero-stat-item .num span { color: var(--accent); }
        .hero-stat-item .label { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-top: 0.2rem; }

        /* ===== Features / 核心服务 ===== */
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 2rem 1.8rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            height: 100%;
            text-align: center;
        }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--accent); }
        .feature-icon { width: 60px; height: 60px; background: rgba(232,168,56,0.1); border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 1.2rem; font-size: 1.6rem; color: var(--accent); }
        .feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.6rem; }
        .feature-card p { font-size: 0.95rem; color: var(--text-muted); }

        /* ===== Category Cards ===== */
        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .category-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
        .category-card .card-img { height: 180px; background: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 3rem; color: rgba(255,255,255,0.2); position: relative; }
        .category-card .card-img .overlay { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.4)); }
        .category-card .card-img .cat-icon { position: relative; z-index: 2; font-size: 3.5rem; color: rgba(255,255,255,0.7); }
        .category-card .card-body { padding: 1.5rem 1.5rem 1.8rem; flex: 1; display: flex; flex-direction: column; }
        .category-card .card-body h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.5rem; }
        .category-card .card-body p { font-size: 0.9rem; color: var(--text-muted); flex: 1; }
        .category-card .card-body .btn-link-custom { color: var(--accent); font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 0.4rem; margin-top: 0.8rem; }
        .category-card .card-body .btn-link-custom:hover { gap: 0.7rem; color: var(--accent-dark); }
        .cat-bg-1 .card-img { background: linear-gradient(135deg, #1a3a5c, #2a5a8c); }
        .cat-bg-2 .card-img { background: linear-gradient(135deg, #2d4a3a, #3d6a5a); }
        .cat-bg-3 .card-img { background: linear-gradient(135deg, #4a2d4a, #6a4a6a); }

        /* ===== Latest Posts (CMS) ===== */
        .post-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            padding: 1.2rem 1.5rem;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 0.8rem;
        }
        .post-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); transform: translateX(3px); }
        .post-item .post-info { flex: 1; min-width: 200px; }
        .post-item .post-title { font-weight: 700; font-size: 1rem; color: var(--text-primary); margin-bottom: 0.15rem; display: block; }
        .post-item .post-title:hover { color: var(--accent); }
        .post-item .post-meta { font-size: 0.82rem; color: var(--text-muted); display: flex; flex-wrap: wrap; gap: 0.8rem; align-items: center; }
        .post-item .post-meta .cat-tag { background: rgba(232,168,56,0.12); color: var(--accent-dark); padding: 0.1rem 0.7rem; border-radius: 50px; font-weight: 600; font-size: 0.75rem; }
        .post-item .post-meta .date { font-size: 0.8rem; }
        .post-item .post-excerpt { width: 100%; font-size: 0.88rem; color: var(--text-muted); margin-top: 0.4rem; line-height: 1.5; }
        .post-empty { text-align: center; padding: 2.5rem 1rem; color: var(--text-muted); background: var(--bg-white); border-radius: var(--radius-sm); border: 1px dashed var(--border-color); }
        .post-empty i { font-size: 2rem; margin-bottom: 0.8rem; display: block; color: var(--border-color); }

        /* ===== Steps / 流程 ===== */
        .step-item {
            text-align: center;
            padding: 1.5rem 1rem;
        }
        .step-num { width: 48px; height: 48px; border-radius: 50%; background: var(--primary); color: #fff; font-weight: 800; font-size: 1.2rem; display: flex; align-items: center; justify-content: center; margin: 0 auto 1rem; position: relative; z-index: 2; }
        .step-item.active .step-num { background: var(--accent); color: #1a2a3a; }
        .step-item h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.4rem; }
        .step-item p { font-size: 0.9rem; color: var(--text-muted); max-width: 240px; margin: 0 auto; }
        .step-connector { display: none; }
        @media (min-width: 768px) {
            .step-connector { display: block; position: absolute; top: 24px; left: 60%; width: 80%; height: 2px; background: var(--border-color); z-index: 0; }
            .step-item:last-child .step-connector { display: none; }
        }

        /* ===== FAQ ===== */
        .faq-item { border-bottom: 1px solid var(--border-light); padding: 1.2rem 0; }
        .faq-item:first-child { padding-top: 0; }
        .faq-question { font-weight: 700; font-size: 1.05rem; color: var(--text-primary); cursor: pointer; display: flex; justify-content: space-between; align-items: center; transition: var(--transition); padding: 0.3rem 0; }
        .faq-question:hover { color: var(--accent); }
        .faq-question i { transition: var(--transition); font-size: 0.9rem; color: var(--text-muted); }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); color: var(--accent); }
        .faq-answer { padding: 0.6rem 0 0.2rem; font-size: 0.95rem; color: var(--text-muted); line-height: 1.7; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 60px 0;
            text-align: center;
        }
        .cta-section h2 { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 0.8rem; }
        .cta-section p { color: rgba(255,255,255,0.75); max-width: 600px; margin: 0 auto 1.8rem; font-size: 1.05rem; }
        .cta-section .btn-cta { background: var(--accent); color: #1a2a3a; border: none; border-radius: 50px; padding: 0.8rem 2.5rem; font-weight: 700; font-size: 1.1rem; transition: var(--transition); }
        .cta-section .btn-cta:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: var(--shadow-accent); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 24px;
        }
        .site-footer h5 { color: #fff; font-weight: 700; font-size: 1rem; margin-bottom: 1rem; }
        .site-footer a { color: rgba(255,255,255,0.6); }
        .site-footer a:hover { color: var(--accent); }
        .footer-links li { margin-bottom: 0.4rem; }
        .footer-links li a { font-size: 0.9rem; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 1.5rem; margin-top: 2rem; text-align: center; font-size: 0.85rem; color: rgba(255,255,255,0.4); }
        .footer-brand { font-size: 1.4rem; font-weight: 800; color: #fff; margin-bottom: 0.8rem; display: block; }
        .footer-brand span { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .hero-title { font-size: 2.2rem; }
            .section-title { font-size: 1.7rem; }
            .header-top { flex-direction: column; align-items: stretch; }
            .header-actions { justify-content: flex-end; }
            .search-box input { width: 100px; }
        }
        @media (max-width: 767px) {
            .section-padding { padding: var(--spacing-section-mobile) 0; }
            .hero-section { padding: 50px 0 48px; }
            .hero-title { font-size: 1.8rem; }
            .hero-desc { font-size: 1rem; }
            .hero-stats { gap: 1.5rem; }
            .hero-stat-item .num { font-size: 1.5rem; }
            .section-title { font-size: 1.5rem; }
            .section-subtitle { font-size: 1rem; }
            .header-actions .btn-outline-primary, .header-actions .btn-accent { font-size: 0.8rem; padding: 0.2rem 1rem; }
            .search-box input { width: 80px; }
            .nav-tabs-custom .nav-link { padding: 0.4rem 1rem; font-size: 0.8rem; }
            .post-item { flex-direction: column; align-items: flex-start; }
            .post-item .post-info { width: 100%; }
            .cta-section h2 { font-size: 1.5rem; }
            .feature-card { padding: 1.5rem 1.2rem; }
            .category-card .card-img { height: 140px; }
            .step-item { padding: 1rem 0.5rem; }
            .faq-question { font-size: 0.95rem; }
        }
        @media (max-width: 480px) {
            .hero-title { font-size: 1.5rem; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-actions .btn-primary-custom, .hero-actions .btn-outline-light-custom { text-align: center; }
            .header-actions { flex-wrap: wrap; justify-content: center; }
            .search-box { width: 100%; }
            .search-box input { flex: 1; width: auto; }
            .nav-tabs-custom { gap: 0.15rem; }
            .nav-tabs-custom .nav-link { padding: 0.3rem 0.8rem; font-size: 0.75rem; }
        }

/* roulang page: article */
:root {
            --primary: #d4a853;
            --primary-dark: #b8922f;
            --primary-light: #e8c97a;
            --accent: #c0392b;
            --accent-hover: #a93226;
            --bg-body: #f8f6f2;
            --bg-card: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-footer: #0f0f1a;
            --text-main: #2c2c2c;
            --text-muted: #7a7a7a;
            --text-light: #f0f0f0;
            --border-color: #e5e0d6;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 14px 40px rgba(0,0,0,0.10);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: all 0.25s ease;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary-dark); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; border-radius: var(--radius-sm); }
        .container { max-width: 1200px; padding-left: 20px; padding-right: 20px; margin: 0 auto; }

        /* Header */
        .site-header {
            background: var(--bg-dark);
            border-bottom: 2px solid rgba(212,168,83,0.25);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 4px 20px rgba(0,0,0,0.25);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0 10px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            transition: var(--transition);
        }
        .logo:hover { color: var(--primary); }
        .logo span { color: var(--primary); }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-box {
            display: flex;
            background: rgba(255,255,255,0.10);
            border-radius: 30px;
            padding: 2px 2px 2px 16px;
            border: 1px solid rgba(255,255,255,0.12);
            transition: var(--transition);
            max-width: 220px;
        }
        .search-box:focus-within { border-color: var(--primary); background: rgba(255,255,255,0.16); }
        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: #e0e0e0;
            font-size: 0.85rem;
            padding: 6px 0;
            width: 120px;
        }
        .search-box input::placeholder { color: rgba(255,255,255,0.4); }
        .search-box button {
            background: transparent;
            border: none;
            color: var(--primary);
            padding: 6px 14px;
            border-radius: 30px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover { color: #fff; background: var(--primary); }
        .btn-outline-primary {
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            transition: var(--transition);
            background: transparent;
        }
        .btn-outline-primary:hover { background: var(--primary); color: #1a1a2e; }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            padding: 6px 22px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            border: none;
            transition: var(--transition);
        }
        .btn-accent:hover { background: var(--accent-hover); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(192,57,43,0.35); }
        .nav-tabs-custom {
            display: flex;
            gap: 4px;
            padding: 6px 0 6px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            flex-wrap: nowrap;
        }
        .nav-tabs-custom::-webkit-scrollbar { display: none; }
        .nav-tabs-custom .nav-link {
            padding: 8px 22px;
            border-radius: 30px;
            font-size: 0.88rem;
            font-weight: 500;
            color: rgba(255,255,255,0.7);
            background: transparent;
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-tabs-custom .nav-link:hover { color: var(--primary); background: rgba(212,168,83,0.10); border-color: rgba(212,168,83,0.2); }
        .nav-tabs-custom .nav-link.active { color: #1a1a2e; background: var(--primary); border-color: var(--primary); font-weight: 600; box-shadow: 0 4px 14px rgba(212,168,83,0.30); }

        /* Article Hero */
        .article-hero {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            padding: 60px 0 48px;
            border-bottom: 3px solid var(--primary);
            position: relative;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light), var(--primary));
            opacity: 0.5;
        }
        .article-hero .breadcrumb-custom {
            color: rgba(255,255,255,0.5);
            font-size: 0.85rem;
            margin-bottom: 16px;
        }
        .article-hero .breadcrumb-custom a { color: var(--primary-light); }
        .article-hero .breadcrumb-custom a:hover { color: #fff; }
        .article-hero h1 {
            color: #fff;
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.3;
            max-width: 800px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 30px;
            margin-top: 18px;
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
        }
        .article-meta span i { margin-right: 6px; color: var(--primary); }
        .article-meta .badge-cat {
            background: var(--primary);
            color: #1a1a2e;
            padding: 3px 14px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.8rem;
        }
        .article-meta .badge-cat i { color: #1a1a2e; margin-right: 4px; }

        /* Main Content */
        .article-main {
            padding: 50px 0 60px;
        }
        .article-body {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 40px 48px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .article-body h2 { font-size: 1.6rem; font-weight: 700; margin-top: 32px; margin-bottom: 16px; color: var(--bg-dark); }
        .article-body h3 { font-size: 1.25rem; font-weight: 600; margin-top: 24px; margin-bottom: 12px; }
        .article-body p { margin-bottom: 16px; font-size: 1.04rem; line-height: 1.85; color: #3a3a3a; }
        .article-body ul, .article-body ol { margin-bottom: 20px; padding-left: 24px; }
        .article-body li { margin-bottom: 8px; font-size: 1.02rem; }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            background: rgba(212,168,83,0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            font-style: italic;
            color: #555;
        }
        .article-body img { border-radius: var(--radius-sm); margin: 20px 0; box-shadow: var(--shadow-sm); }
        .article-body .table-wrap { overflow-x: auto; margin: 20px 0; }
        .article-body table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
        .article-body th, .article-body td { padding: 10px 16px; border: 1px solid var(--border-color); text-align: left; }
        .article-body th { background: rgba(212,168,83,0.10); font-weight: 600; }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }
        .article-tags .tag {
            background: var(--bg-body);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.82rem;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-tags .tag:hover { border-color: var(--primary); color: var(--primary-dark); background: rgba(212,168,83,0.06); }
        .article-nav {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-nav a { font-size: 0.92rem; color: var(--text-muted); }
        .article-nav a:hover { color: var(--primary-dark); }
        .article-nav .nav-prev i { margin-right: 6px; }
        .article-nav .nav-next i { margin-left: 6px; }

        /* Sidebar / Related */
        .sidebar-section {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            margin-bottom: 24px;
        }
        .sidebar-section h5 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--bg-dark);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-section h5 i { color: var(--primary); }
        .related-list { list-style: none; padding: 0; margin: 0; }
        .related-list li { padding: 10px 0; border-bottom: 1px solid var(--border-color); }
        .related-list li:last-child { border-bottom: none; }
        .related-list a { font-size: 0.92rem; display: flex; gap: 8px; align-items: flex-start; }
        .related-list a i { color: var(--primary); margin-top: 4px; font-size: 0.7rem; }
        .related-list a:hover { color: var(--accent); }
        .related-list .related-date { font-size: 0.78rem; color: var(--text-muted); margin-left: auto; white-space: nowrap; }

        /* CTA */
        .article-cta {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #16213e 100%);
            padding: 48px 0;
            text-align: center;
            border-top: 3px solid var(--primary);
            border-bottom: 3px solid var(--primary);
        }
        .article-cta h3 { color: #fff; font-size: 1.7rem; font-weight: 700; margin-bottom: 12px; }
        .article-cta p { color: rgba(255,255,255,0.65); max-width: 560px; margin: 0 auto 24px; font-size: 1.05rem; }
        .article-cta .btn-group-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
        .article-cta .btn-primary-lg {
            background: var(--primary);
            color: #1a1a2e;
            padding: 12px 38px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
        }
        .article-cta .btn-primary-lg:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,168,83,0.30); }
        .article-cta .btn-outline-light {
            border: 1px solid rgba(255,255,255,0.3);
            color: #fff;
            padding: 12px 36px;
            border-radius: 40px;
            font-weight: 500;
            background: transparent;
            transition: var(--transition);
        }
        .article-cta .btn-outline-light:hover { background: rgba(255,255,255,0.08); border-color: var(--primary); color: var(--primary); }

        /* Footer */
        .site-footer {
            background: var(--bg-footer);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 28px;
            border-top: 2px solid rgba(212,168,83,0.15);
        }
        .site-footer .footer-brand { font-size: 1.4rem; font-weight: 700; color: #fff; display: inline-block; margin-bottom: 12px; }
        .site-footer .footer-brand span { color: var(--primary); }
        .site-footer h5 { color: #fff; font-size: 0.95rem; font-weight: 600; margin-bottom: 16px; }
        .footer-links { list-style: none; padding: 0; margin: 0; }
        .footer-links li { margin-bottom: 8px; }
        .footer-links a { color: rgba(255,255,255,0.55); font-size: 0.88rem; transition: var(--transition); }
        .footer-links a:hover { color: var(--primary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 20px;
            margin-top: 28px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.3);
        }

        /* 404 State */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-box i { font-size: 3.5rem; color: var(--primary); margin-bottom: 20px; }
        .not-found-box h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-body { padding: 32px 28px; }
            .article-hero h1 { font-size: 1.8rem; }
        }
        @media (max-width: 768px) {
            .header-top { flex-direction: column; align-items: stretch; }
            .header-actions { justify-content: flex-end; }
            .search-box { max-width: 100%; }
            .search-box input { width: 100%; }
            .nav-tabs-custom .nav-link { padding: 6px 16px; font-size: 0.82rem; }
            .article-hero { padding: 40px 0 32px; }
            .article-hero h1 { font-size: 1.5rem; }
            .article-meta { gap: 10px 20px; font-size: 0.82rem; }
            .article-body { padding: 24px 18px; }
            .article-body h2 { font-size: 1.3rem; }
            .article-body p { font-size: 0.96rem; }
            .article-cta h3 { font-size: 1.3rem; }
            .site-footer .row > div { margin-bottom: 20px; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.25rem; }
            .article-body { padding: 18px 14px; }
            .article-body h2 { font-size: 1.15rem; }
            .header-actions .btn-outline-primary, .header-actions .btn-accent { font-size: 0.78rem; padding: 5px 14px; }
            .article-cta .btn-primary-lg, .article-cta .btn-outline-light { padding: 10px 24px; font-size: 0.9rem; }
        }

/* roulang page: category1 */
:root {
            --primary: #0d6efd;
            --primary-dark: #0a58ca;
            --primary-light: #cfe2ff;
            --accent: #ff6a00;
            --accent-dark: #e05d00;
            --accent-light: #fff0e0;
            --bg-light: #f8faff;
            --bg-white: #ffffff;
            --text-dark: #1a1a2e;
            --text-main: #2d3436;
            --text-muted: #6c757d;
            --text-light: #adb5bd;
            --border-color: #e9ecef;
            --border-radius: 16px;
            --border-radius-sm: 10px;
            --border-radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.08);
            --font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: all 0.25s ease;
            --spacer: 2rem;
            --section-padding: 4.5rem 0;
        }

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

        body {
            font-family: var(--font-family);
            color: var(--text-main);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== 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);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.05em;
        }
        .logo span {
            color: var(--primary);
        }
        .logo:hover {
            color: var(--text-dark);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 50px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
        }
        .search-box input {
            border: none;
            background: transparent;
            padding: 0.45rem 0.9rem;
            font-size: 0.9rem;
            outline: none;
            min-width: 140px;
            color: var(--text-main);
        }
        .search-box input::placeholder {
            color: var(--text-light);
        }
        .search-box button {
            border: none;
            background: transparent;
            padding: 0.45rem 0.9rem;
            color: var(--text-muted);
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            color: var(--primary);
        }

        .btn-outline-primary {
            border: 1px solid var(--primary);
            color: var(--primary);
            background: transparent;
            border-radius: 50px;
            padding: 0.4rem 1.2rem;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 0.4rem 1.4rem;
            font-size: 0.9rem;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(255, 106, 0, 0.25);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(255, 106, 0, 0.35);
            transform: translateY(-1px);
        }

        .nav-tabs-custom {
            display: flex;
            gap: 0.25rem;
            padding: 0.25rem 0 0.5rem 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--border-color) transparent;
            flex-wrap: nowrap;
        }
        .nav-tabs-custom::-webkit-scrollbar {
            height: 4px;
        }
        .nav-tabs-custom::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 10px;
        }
        .nav-tabs-custom .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1.2rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            background: transparent;
            border-radius: 50px;
            white-space: nowrap;
            transition: var(--transition);
            border: none;
        }
        .nav-tabs-custom .nav-link:hover {
            background: var(--bg-light);
            color: var(--text-dark);
        }
        .nav-tabs-custom .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(13, 110, 253, 0.25);
        }
        .nav-tabs-custom .nav-link i {
            margin-right: 0.35rem;
            font-size: 0.85rem;
        }

        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                align-items: stretch;
                gap: 0.5rem;
            }
            .header-actions {
                justify-content: flex-end;
            }
            .search-box input {
                min-width: 100px;
            }
            .logo {
                font-size: 1.25rem;
            }
            .nav-tabs-custom {
                gap: 0.15rem;
                padding-bottom: 0.25rem;
            }
            .nav-tabs-custom .nav-link {
                padding: 0.4rem 1rem;
                font-size: 0.82rem;
            }
        }
        @media (max-width: 520px) {
            .header-actions .btn-outline-primary {
                display: none !important;
            }
            .search-box input {
                min-width: 80px;
            }
            .nav-tabs-custom .nav-link {
                padding: 0.35rem 0.85rem;
                font-size: 0.78rem;
            }
        }

        /* ===== Hero ===== */
        .category-hero {
            background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 60%, #084298 100%);
            padding: 3.5rem 0 3rem 0;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--bg-light);
            border-radius: 50% 50% 0 0 / 100% 100% 0 0;
        }
        .category-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }
        .category-hero p {
            font-size: 1.1rem;
            opacity: 0.85;
            max-width: 640px;
            margin: 0 auto 0.5rem auto;
            line-height: 1.6;
        }
        .category-hero .breadcrumb-custom {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            opacity: 0.75;
            margin-top: 1rem;
            flex-wrap: wrap;
        }
        .category-hero .breadcrumb-custom a {
            color: #fff;
            opacity: 0.8;
        }
        .category-hero .breadcrumb-custom a:hover {
            opacity: 1;
            color: #fff;
        }
        .category-hero .breadcrumb-custom span {
            color: rgba(255, 255, 255, 0.6);
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: 2.5rem 0 2.5rem 0;
            }
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .category-hero p {
                font-size: 0.95rem;
            }
        }

        /* ===== Sections ===== */
        section {
            padding: var(--section-padding);
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 580px;
            margin-bottom: 2.5rem;
        }

        /* ===== Card ===== */
        .card-custom {
            background: var(--bg-white);
            border: none;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            overflow: hidden;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-custom .card-body {
            padding: 1.5rem 1.5rem 1.75rem;
        }
        .card-custom .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 1rem;
            background: var(--primary);
        }
        .card-custom .card-title {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }
        .card-custom .card-text {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .card-custom .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            margin-top: 1rem;
        }
        .card-custom .card-tags .badge-custom {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 50px;
            padding: 0.2rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 500;
        }

        /* ===== Steps ===== */
        .step-wrapper {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
            justify-content: center;
        }
        .step-item {
            flex: 1 1 200px;
            text-align: center;
            background: var(--bg-white);
            border-radius: var(--border-radius);
            padding: 2rem 1.25rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            margin: 0 auto 1rem auto;
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.4rem;
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        @media (max-width: 768px) {
            .step-wrapper {
                gap: 1rem;
            }
            .step-item {
                flex: 1 1 160px;
                padding: 1.5rem 1rem;
            }
        }

        /* ===== Accordion / FAQ ===== */
        .faq-accordion .accordion-item {
            border: none;
            border-radius: var(--border-radius-sm) !important;
            margin-bottom: 0.75rem;
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            color: var(--text-dark);
            padding: 1.1rem 1.5rem;
            background: var(--bg-white);
            border: none;
            font-size: 1rem;
            box-shadow: none !important;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--bg-white);
        }
        .faq-accordion .accordion-button::after {
            background-size: 1rem;
            transition: var(--transition);
        }
        .faq-accordion .accordion-body {
            padding: 0 1.5rem 1.2rem 1.5rem;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0d6efd, #0a58ca);
            color: #fff;
            text-align: center;
            padding: 4rem 0;
            border-radius: 0;
            position: relative;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.85;
            max-width: 560px;
            margin: 0 auto 2rem auto;
        }
        .cta-section .btn-cta {
            background: #fff;
            color: var(--primary-dark);
            border: none;
            border-radius: 50px;
            padding: 0.7rem 2.5rem;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
            background: #f0f4ff;
        }

        @media (max-width: 768px) {
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-cta {
                padding: 0.6rem 2rem;
                font-size: 0.95rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1a1a2e;
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 1.5rem 0;
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 0.75rem;
        }
        .site-footer .footer-brand span {
            color: var(--primary);
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 0.4rem;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: #fff;
            padding-left: 3px;
        }
        .footer-bottom {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
            text-align: center;
        }

        @media (max-width: 768px) {
            .site-footer .row>div {
                margin-bottom: 1.5rem;
            }
            .site-footer {
                padding: 2.5rem 0 1rem 0;
            }
        }

        /* ===== Extra utilities ===== */
        .bg-soft-primary {
            background: var(--primary-light);
        }
        .text-primary-dark {
            color: var(--primary-dark);
        }
        .rounded-custom {
            border-radius: var(--border-radius);
        }
        .shadow-hover:hover {
            box-shadow: var(--shadow-md);
        }

        /* ===== Guide list ===== */
        .guide-list-group {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .guide-list-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            background: var(--bg-white);
            border-radius: var(--border-radius-sm);
            padding: 1.1rem 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            cursor: default;
        }
        .guide-list-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .guide-list-item .guide-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .guide-list-item .guide-content {
            flex: 1;
        }
        .guide-list-item .guide-content h5 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.15rem;
        }
        .guide-list-item .guide-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .guide-list-item .guide-badge {
            background: var(--accent-light);
            color: var(--accent-dark);
            border-radius: 50px;
            padding: 0.2rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 500;
            flex-shrink: 0;
        }

        @media (max-width: 576px) {
            .guide-list-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
                padding: 1rem 1.2rem;
            }
            .guide-list-item .guide-badge {
                align-self: flex-start;
            }
        }

        /* ===== Responsive spacing ===== */
        @media (max-width: 768px) {
            section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
                margin-bottom: 1.8rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .card-custom .card-body {
                padding: 1.2rem 1.2rem 1.4rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #e50914;
            --primary-dark: #b20710;
            --primary-light: #ff4d4d;
            --accent: #ff6b35;
            --accent-dark: #e55a2b;
            --bg-dark: #0f0f0f;
            --bg-card: #1a1a2e;
            --bg-section: #16213e;
            --bg-light: #f8f9fa;
            --text-light: #ffffff;
            --text-muted: rgba(255, 255, 255, 0.65);
            --text-dark: #1a1a2e;
            --border-color: rgba(255, 255, 255, 0.1);
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.2);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: rgba(15, 15, 15, 0.98);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 0 0 4px 0;
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0 8px 0;
            gap: 20px;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 2px;
            white-space: nowrap;
        }
        .logo span {
            color: var(--primary);
        }
        .logo:hover {
            color: var(--text-light);
            opacity: 0.9;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50px;
            padding: 0 12px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.12);
        }
        .search-box input {
            background: transparent;
            border: none;
            padding: 8px 8px 8px 4px;
            color: var(--text-light);
            font-size: 0.875rem;
            min-width: 140px;
            outline: none;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box button {
            background: transparent;
            border: none;
            color: var(--text-muted);
            padding: 6px 4px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            color: var(--primary-light);
        }

        .btn-outline-primary {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 20px;
            border: 1px solid var(--primary);
            color: var(--primary-light);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            background: transparent;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 22px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            border: none;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-accent:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
            color: #fff;
        }

        .nav-tabs-custom {
            display: flex;
            gap: 4px;
            padding: 4px 0 0 0;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-tabs-custom::-webkit-scrollbar {
            display: none;
        }

        .nav-tabs-custom .nav-link {
            padding: 8px 20px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 50px;
            background: transparent;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
            text-decoration: none;
        }
        .nav-tabs-custom .nav-link:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-tabs-custom .nav-link.active {
            color: #fff;
            background: var(--primary);
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(229, 9, 20, 0.35);
        }
        .nav-tabs-custom .nav-link:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
                gap: 12px;
            }
            .logo {
                font-size: 1.25rem;
            }
            .search-box input {
                min-width: 100px;
            }
            .nav-tabs-custom .nav-link {
                padding: 6px 14px;
                font-size: 0.82rem;
            }
            .btn-outline-primary.d-none.d-sm-inline-block {
                display: none !important;
            }
        }

        @media (max-width: 520px) {
            .header-actions .btn-accent {
                padding: 6px 14px;
                font-size: 0.78rem;
            }
            .search-box input {
                min-width: 80px;
                font-size: 0.8rem;
            }
            .nav-tabs-custom .nav-link {
                padding: 5px 12px;
                font-size: 0.78rem;
            }
        }

        /* ===== Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            padding: 60px 0 50px;
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(229, 9, 20, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -1px;
            line-height: 1.2;
        }
        .page-hero h1 span {
            color: var(--primary);
        }
        .page-hero p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 620px;
            margin-bottom: 0;
        }
        .page-hero .breadcrumb-custom {
            display: flex;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .page-hero .breadcrumb-custom a {
            color: var(--text-muted);
        }
        .page-hero .breadcrumb-custom a:hover {
            color: var(--primary-light);
        }
        .page-hero .breadcrumb-custom span {
            color: var(--text-light);
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 40px 0 32px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero p {
                font-size: 0.88rem;
            }
        }

        /* ===== Sections ===== */
        .section-block {
            padding: 70px 0;
        }
        .section-block-alt {
            background: var(--bg-section);
        }
        .section-block-dark {
            background: var(--bg-card);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }
        .section-title-center {
            text-align: center;
        }
        .section-subtitle-center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 768px) {
            .section-block {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
                margin-bottom: 30px;
            }
        }
        @media (max-width: 520px) {
            .section-title {
                font-size: 1.35rem;
            }
        }

        /* ===== Cards ===== */
        .card-game {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .card-game:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(229, 9, 20, 0.3);
        }
        .card-game .card-img {
            aspect-ratio: 16/9;
            background: linear-gradient(135deg, #1a1a2e, #0f3460);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.5rem;
            color: var(--primary-light);
            position: relative;
        }
        .card-game .card-img .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 50px;
            letter-spacing: 0.3px;
        }
        .card-game .card-body {
            padding: 22px 24px 24px;
        }
        .card-game .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-game .card-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .card-game .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .card-game .card-body .card-meta i {
            margin-right: 4px;
        }
        .card-game .card-body .btn-link-card {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary-light);
            margin-top: 6px;
            transition: var(--transition);
        }
        .card-game .card-body .btn-link-card:hover {
            color: var(--accent);
            gap: 10px;
        }

        @media (max-width: 768px) {
            .card-game .card-body {
                padding: 18px 18px 20px;
            }
            .card-game .card-body h3 {
                font-size: 1.05rem;
            }
        }

        /* ===== Guide List ===== */
        .guide-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .guide-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-sm);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 20px;
            transition: var(--transition);
            cursor: default;
        }
        .guide-item:hover {
            border-color: rgba(229, 9, 20, 0.2);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .guide-item .guide-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            opacity: 0.4;
            min-width: 44px;
            line-height: 1;
        }
        .guide-item .guide-content {
            flex: 1;
        }
        .guide-item .guide-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .guide-item .guide-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .guide-item .guide-icon {
            font-size: 1.6rem;
            color: var(--primary-light);
            opacity: 0.6;
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .guide-item {
                padding: 16px 18px;
                flex-wrap: wrap;
                gap: 12px;
            }
            .guide-item .guide-num {
                font-size: 1.4rem;
                min-width: 32px;
            }
            .guide-item .guide-content h4 {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .guide-item .guide-icon {
                display: none;
            }
        }

        /* ===== Stats Row ===== */
        .stat-item {
            text-align: center;
            padding: 24px 16px;
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .stat-item .stat-number {
                font-size: 2rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-sm) !important;
            margin-bottom: 10px;
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            background: var(--bg-card);
            color: var(--text-light);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            border-radius: var(--border-radius-sm);
            transition: var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(229, 9, 20, 0.08);
            color: var(--primary-light);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--accent);
            outline-offset: -2px;
        }
        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='rgba(255,255,255,0.6)'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
            transition: var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23ff4d4d'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
        }
        .faq-accordion .accordion-body {
            padding: 0 22px 18px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--bg-section));
            padding: 60px 0;
            text-align: center;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 40px;
            background: var(--accent);
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            border-radius: 50px;
            border: none;
            transition: var(--transition);
        }
        .cta-section .btn-cta:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 107, 53, 0.45);
            color: #fff;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 44px 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 0.92rem;
            }
            .cta-section .btn-cta {
                padding: 12px 32px;
                font-size: 0.92rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0a0a0f;
            padding: 60px 0 30px;
            border-top: 1px solid var(--border-color);
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-light);
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-brand span {
            color: var(--primary);
        }
        .footer-brand:hover {
            color: var(--text-light);
            opacity: 0.9;
        }
        .site-footer h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.88rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .footer-links li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
            letter-spacing: 0.2px;
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 24px;
            }
            .site-footer .row>div {
                margin-bottom: 24px;
            }
            .footer-bottom {
                margin-top: 24px;
                padding-top: 16px;
                font-size: 0.75rem;
            }
        }

        /* ===== Utility ===== */
        .text-primary {
            color: var(--primary-light) !important;
        }
        .bg-glass {
            background: rgba(255, 255, 255, 0.04);
            backdrop-filter: blur(4px);
        }
        .rounded-custom {
            border-radius: var(--border-radius);
        }
        .shadow-custom {
            box-shadow: var(--shadow-sm);
        }
        .mb-section {
            margin-bottom: 60px;
        }

        @media (max-width: 768px) {
            .mb-section {
                margin-bottom: 40px;
            }
        }

        /* badge */
        .badge-custom {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.72rem;
            font-weight: 600;
            border-radius: 50px;
            background: rgba(229, 9, 20, 0.15);
            color: var(--primary-light);
            letter-spacing: 0.3px;
        }
        .badge-custom.accent {
            background: rgba(255, 107, 53, 0.15);
            color: var(--accent);
        }
        .badge-custom.green {
            background: rgba(0, 200, 120, 0.15);
            color: #00c878;
        }

        /* divider */
        .divider {
            width: 50px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
            margin-bottom: 20px;
        }
        .divider.center {
            margin-left: auto;
            margin-right: auto;
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d3f8a;
            --primary-dark: #0f1a4a;
            --accent: #f5a623;
            --accent-light: #ffc145;
            --accent-dark: #d4891a;
            --bg: #f8f9fc;
            --bg-alt: #eef0f7;
            --bg-dark: #0f1a4a;
            --text: #1e2a41;
            --text-light: #5a6a85;
            --text-white: #ffffff;
            --border: #dce0e8;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(26, 42, 108, 0.08);
            --shadow-hover: 0 16px 48px rgba(26, 42, 108, 0.15);
            --shadow-accent: 0 8px 24px rgba(245, 166, 35, 0.3);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container: 1200px;
        }

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

        /* ===== Container ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== 导航 ===== */
        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .site-header .container {
            padding-top: 12px;
            padding-bottom: 0;
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 12px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .logo span {
            color: var(--accent);
        }
        .logo:hover {
            color: var(--primary-dark);
            transform: scale(1.02);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border-radius: 40px;
            padding: 0 6px 0 18px;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--accent);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(245, 166, 35, 0.1);
        }
        .search-box input {
            border: none;
            background: transparent;
            padding: 8px 0;
            font-size: 0.9rem;
            outline: none;
            min-width: 140px;
            color: var(--text);
        }
        .search-box input::placeholder {
            color: var(--text-light);
        }
        .search-box button {
            border: none;
            background: var(--accent);
            color: #fff;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--accent-dark);
            transform: scale(1.05);
        }
        .btn-outline-primary {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
            padding: 8px 22px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(26, 42, 108, 0.2);
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            padding: 10px 26px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 0.9rem;
            border: none;
            transition: var(--transition);
            display: inline-block;
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-accent);
            color: #fff;
        }

        /* 频道 Tabs 导航 */
        .nav-tabs-custom {
            display: flex;
            gap: 4px;
            overflow-x: auto;
            padding-bottom: 0;
            scrollbar-width: none;
            -ms-overflow-style: none;
            flex-wrap: nowrap;
        }
        .nav-tabs-custom::-webkit-scrollbar {
            display: none;
        }
        .nav-tabs-custom .nav-link {
            padding: 10px 22px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-light);
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
            transition: var(--transition);
            white-space: nowrap;
            border: none;
            background: transparent;
            position: relative;
        }
        .nav-tabs-custom .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            border-radius: 3px 3px 0 0;
            background: var(--accent);
            transition: var(--transition);
        }
        .nav-tabs-custom .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 42, 108, 0.04);
        }
        .nav-tabs-custom .nav-link:hover::after {
            width: 60%;
        }
        .nav-tabs-custom .nav-link.active {
            color: var(--primary);
            background: rgba(26, 42, 108, 0.06);
        }
        .nav-tabs-custom .nav-link.active::after {
            width: 80%;
        }
        .nav-tabs-custom .nav-link i {
            margin-right: 6px;
            font-size: 0.85rem;
        }

        /* ===== Hero ===== */
        .hero-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 60px 0 70px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(245, 166, 35, 0.05);
            pointer-events: none;
        }
        .hero-section .container {
            position: relative;
            z-index: 1;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.15);
            color: var(--accent-light);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            border: 1px solid rgba(245, 166, 35, 0.2);
        }
        .hero-section h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 18px;
        }
        .hero-section h1 span {
            color: var(--accent);
        }
        .hero-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-actions .btn-accent {
            padding: 14px 34px;
            font-size: 1rem;
        }
        .hero-actions .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            background: transparent;
            padding: 12px 30px;
            border-radius: 40px;
            font-weight: 600;
            transition: var(--transition);
        }
        .hero-actions .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: 70px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin-bottom: 40px;
            line-height: 1.6;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin-bottom: 20px;
        }

        /* ===== 功能卡片 ===== */
        .feature-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 0;
            background: var(--accent);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .feature-card:hover::before {
            height: 100%;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(26, 42, 108, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--accent);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .feature-card .badge-tag {
            display: inline-block;
            background: rgba(245, 166, 35, 0.12);
            color: var(--accent-dark);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-top: 12px;
        }

        /* ===== 流程步骤 ===== */
        .steps-section {
            background: var(--bg-alt);
        }
        .step-item {
            text-align: center;
            padding: 20px 16px;
            position: relative;
        }
        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            margin: 0 auto 16px;
            transition: var(--transition);
        }
        .step-item:hover .step-number {
            background: var(--accent);
            transform: scale(1.1);
            box-shadow: 0 8px 24px rgba(245, 166, 35, 0.3);
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 0;
            max-width: 240px;
            margin-left: auto;
            margin-right: auto;
        }
        .step-arrow {
            position: absolute;
            right: -20px;
            top: 40px;
            font-size: 1.6rem;
            color: var(--accent);
            opacity: 0.4;
        }
        .step-item:last-child .step-arrow {
            display: none;
        }

        /* ===== 安全列表 ===== */
        .safety-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .safety-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
        }
        .safety-list li:last-child {
            border-bottom: none;
        }
        .safety-list li i {
            color: var(--accent);
            font-size: 1.2rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .safety-list li strong {
            display: block;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .safety-list li span {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
        }
        .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
            background: #fff;
        }
        .accordion-button {
            font-weight: 700;
            color: var(--primary);
            background: #fff;
            padding: 18px 24px;
            font-size: 1rem;
            border: none;
            box-shadow: none;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(26, 42, 108, 0.03);
            color: var(--primary-dark);
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.15);
        }
        .accordion-button::after {
            background-size: 1rem;
            transition: var(--transition);
        }
        .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 70px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 520px;
            margin: 0 auto 30px;
        }
        .cta-section .btn-accent {
            padding: 16px 44px;
            font-size: 1.1rem;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            border: none;
        }
        .cta-section .btn-accent:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 8px 30px rgba(245, 166, 35, 0.4);
        }
        .cta-section .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            background: transparent;
            padding: 14px 38px;
            border-radius: 40px;
            font-weight: 600;
            margin-left: 14px;
            transition: var(--transition);
        }
        .cta-section .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0c1328;
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            display: inline-block;
            margin-bottom: 16px;
            transition: var(--transition);
        }
        .site-footer .footer-brand span {
            color: var(--accent);
        }
        .site-footer .footer-brand:hover {
            color: var(--accent-light);
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .site-footer h5::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
        }
        .footer-links a:hover {
            color: var(--accent-light);
            transform: translateX(4px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 24px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-section h1 {
                font-size: 2.3rem;
            }
            .step-arrow {
                display: none;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
            }
            .logo {
                text-align: center;
                font-size: 1.4rem;
            }
            .header-actions {
                justify-content: center;
            }
            .search-box input {
                min-width: 100px;
            }
            .nav-tabs-custom {
                justify-content: flex-start;
                padding-bottom: 0;
            }
            .nav-tabs-custom .nav-link {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
            .hero-section {
                padding: 44px 0 54px;
            }
            .hero-section h1 {
                font-size: 1.8rem;
            }
            .hero-section p {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-accent,
            .hero-actions .btn-outline-light {
                text-align: center;
            }
            .section-padding {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 28px;
            }
            .feature-card {
                padding: 24px 20px;
            }
            .step-item {
                padding: 16px 8px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .btn-accent,
            .cta-section .btn-outline-light {
                display: block;
                width: 100%;
                margin: 8px 0;
            }
            .site-footer .col-md-2,
            .site-footer .col-md-3,
            .site-footer .col-md-5 {
                margin-bottom: 24px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .hero-section h1 {
                font-size: 1.5rem;
            }
            .hero-badge {
                font-size: 0.7rem;
                padding: 4px 14px;
            }
            .nav-tabs-custom .nav-link {
                padding: 6px 10px;
                font-size: 0.78rem;
            }
            .nav-tabs-custom .nav-link i {
                margin-right: 4px;
                font-size: 0.75rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .feature-card h3 {
                font-size: 1.05rem;
            }
            .accordion-button {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .accordion-body {
                font-size: 0.85rem;
                padding: 0 16px 16px;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .site-footer {
                padding: 36px 0 0;
            }
            .site-footer .footer-brand {
                font-size: 1.2rem;
            }
            .footer-bottom {
                font-size: 0.75rem;
            }
        }