/* roulang page: index */
:root {
            --primary: #E33E3E;
            --primary-dark: #C62C2C;
            --primary-soft: #FDE9E9;
            --ink: #1A1A1A;
            --ink-soft: #3A3A3A;
            --muted: #6B6560;
            --yellow: #F5B301;
            --yellow-ink: #1A1A1A;
            --bg: #FAF8F5;
            --bg-alt: #F0F0F0;
            --bg-dark: #1A1A1A;
            --border: #E2DED9;
            --white: #FFFFFF;
            --radius-card: 8px;
            --radius-btn: 6px;
            --radius-badge: 4px;
            --shadow-card: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-nav: 0 2px 12px rgba(0,0,0,0.06);
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-mono: "DIN Alternate", "Roboto Mono", "Segoe UI", monospace;
            --transition: 0.2s ease;
            --container: 1120px;
            --tab-height: 56px;
            --nav-height: 64px;
            --section-pad: 72px;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }

        html { scroll-behavior: smooth; }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--ink);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a { color: inherit; text-decoration: none; }
        img { max-width: 100%; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }

        .container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
        .section { padding: var(--section-pad) 0; }
        .section-alt { background: var(--bg-alt); }
        .section-dark { background: var(--bg-dark); color: #F5F5F5; }

        /* Header */
        .site-header {
            position: sticky; top: 0; z-index: 1000;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-nav); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
        .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; letter-spacing: 0.5px; }
        .brand-mark {
            width: 34px; height: 34px; background: var(--primary); color: white;
            display: flex; align-items: center; justify-content: center;
            border-radius: 6px; font-size: 18px; font-weight: 700; flex-shrink: 0;
        }
        .brand-text { white-space: nowrap; }
        .desktop-nav { display: flex; align-items: center; gap: 28px; list-style: none; }
        .desktop-nav a { font-weight: 500; color: var(--ink-soft); position: relative; padding: 18px 0; transition: color var(--transition); }
        .desktop-nav a:hover { color: var(--primary); }
        .desktop-nav a.active { color: var(--primary); }
        .desktop-nav a.active::after {
            content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 3px;
            background: var(--primary); border-radius: 2px 2px 0 0;
        }
        .header-cta {
            display: inline-flex; align-items: center; gap: 6px;
            background: var(--primary); color: white;
            padding: 8px 18px; border-radius: var(--radius-btn);
            font-weight: 600; font-size: 14px; border: none; cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }
        .header-cta:hover { background: var(--primary-dark); box-shadow: 0 4px 14px rgba(227,62,62,0.35); }
        .header-cta:focus { outline: 2px solid var(--yellow); outline-offset: 2px; }
        .burger {
            display: none; background: none; border: 1px solid var(--border); cursor: pointer;
            width: 40px; height: 40px; border-radius: 6px; align-items: center; justify-content: center;
            flex-direction: column; gap: 4px;
        }
        .burger span { display: block; width: 20px; height: 2px; background: var(--ink); transition: var(--transition); }
        .mobile-menu {
            display: none; position: fixed; top: var(--nav-height); left: 0; right: 0;
            background: var(--bg); border-bottom: 1px solid var(--border); padding: 16px 20px;
            z-index: 999; flex-direction: column; gap: 8px;
        }
        .mobile-menu.open { display: flex; }
        .mobile-menu a { font-weight: 500; padding: 10px 12px; border-radius: 6px; color: var(--ink-soft); }
        .mobile-menu a:hover { background: var(--primary-soft); color: var(--primary); }
        .mobile-menu a.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }

        /* Mobile bottom tab */
        .mobile-tabs {
            display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 1000;
            background: var(--bg); border-top: 1px solid var(--border);
            height: var(--tab-height); padding-bottom: env(safe-area-inset-bottom);
            box-shadow: 0 -2px 10px rgba(0,0,0,0.04);
            justify-content: space-around; align-items: center;
        }
        .mobile-tabs a {
            display: flex; flex-direction: column; align-items: center; gap: 2px;
            font-size: 11px; color: var(--muted); font-weight: 500;
            transition: color var(--transition); flex: 1; padding: 4px 0;
        }
        .mobile-tabs a .tab-icon { font-size: 18px; line-height: 1; }
        .mobile-tabs a.active { color: var(--primary); background: var(--primary-soft); border-radius: 8px 8px 0 0; }

        /* Hero */
        .hero {
            position: relative; overflow: hidden; padding: 72px 0 80px;
            background: var(--bg-dark); color: white;
        }
        .hero-bg {
            position: absolute; inset: 0; z-index: 0;
            background: url('/assets/images/678a32b44ce88663.webp') center/cover no-repeat;
            opacity: 0.32;
        }
        .hero-bg-overlay {
            position: absolute; inset: 0; z-index: 1;
            background: linear-gradient(135deg, rgba(26,26,26,0.88) 0%, rgba(26,26,26,0.65) 50%, rgba(227,62,62,0.45) 100%);
        }
        .hero-container { position: relative; z-index: 2; }
        .hero-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 40px; align-items: center; }
        .hero-title { font-size: 42px; font-weight: 800; line-height: 1.25; letter-spacing: 0.5px; margin-bottom: 18px; }
        .hero-title .accent { color: var(--yellow); }
        .hero-subtitle { font-size: 16px; color: rgba(255,255,255,0.82); max-width: 580px; line-height: 1.9; margin-bottom: 28px; }
        .hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; }
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 11px 24px; border-radius: var(--radius-btn);
            font-weight: 600; font-size: 15px; cursor: pointer; transition: all var(--transition);
            border: none; text-align: center; justify-content: center;
        }
        .btn-primary { background: var(--primary); color: white; }
        .btn-primary:hover { background: var(--primary-dark); box-shadow: 0 6px 18px rgba(227,62,62,0.4); transform: translateY(-2px); }
        .btn-primary:focus { outline: 2px solid var(--yellow); outline-offset: 2px; }
        .btn-primary:active { transform: translateY(0); }
        .btn-secondary { background: transparent; color: white; border: 2px solid rgba(255,255,255,0.6); }
        .btn-secondary:hover { border-color: white; background: rgba(255,255,255,0.08); }
        .btn-secondary:focus { outline: 2px solid var(--yellow); outline-offset: 2px; }
        .hero-cards { display: flex; flex-direction: column; gap: 16px; }
        .hero-card {
            background: rgba(255,255,255,0.07); backdrop-filter: blur(12px);
            border: 1px solid rgba(255,255,255,0.18); border-radius: var(--radius-card);
            padding: 18px 20px; display: flex; align-items: center; gap: 14px;
            transition: transform var(--transition), background var(--transition);
        }
        .hero-card:hover { transform: translateY(-3px); background: rgba(255,255,255,0.12); }
        .hero-card .card-icon { width: 42px; height: 42px; background: var(--yellow); border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 20px; color: var(--yellow-ink); flex-shrink: 0; }
        .hero-card .card-value { font-size: 22px; font-weight: 700; font-family: var(--font-mono); color: white; line-height: 1.2; }
        .hero-card .card-label { font-size: 13px; color: rgba(255,255,255,0.7); }

        /* Section heading */
        .section-head { margin-bottom: 36px; }
        .section-tag {
            display: inline-block; background: var(--primary-soft); color: var(--primary);
            padding: 4px 14px; border-radius: var(--radius-badge); font-size: 12px;
            font-weight: 600; letter-spacing: 0.5px; margin-bottom: 10px;
        }
        .section-head h2 { font-size: 28px; font-weight: 800; line-height: 1.3; color: var(--ink); }
        .section-head .lead { color: var(--muted); font-size: 15px; margin-top: 10px; max-width: 720px; }

        /* Grid */
        .grid { display: grid; gap: 20px; }
        .grid-4 { grid-template-columns: repeat(4, 1fr); }
        .grid-3 { grid-template-columns: repeat(3, 1fr); }
        .grid-2 { grid-template-columns: repeat(2, 1fr); }

        /* Cards */
        .card {
            background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-card);
            padding: 24px; box-shadow: var(--shadow-card); transition: all var(--transition);
        }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
        .card .icon-circle {
            width: 46px; height: 46px; background: var(--primary-soft); color: var(--primary);
            border-radius: 6px; display: flex; align-items: center; justify-content: center;
            font-size: 22px; margin-bottom: 14px;
        }
        .card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
        .card p { color: var(--muted); font-size: 14px; line-height: 1.7; }

        /* Metric card */
        .metric-card { text-align: center; padding: 28px 20px; }
        .metric-card .metric-value { font-size: 38px; font-weight: 800; font-family: var(--font-mono); color: var(--primary); line-height: 1.1; }
        .metric-card .metric-label { font-size: 13px; color: var(--muted); margin-top: 6px; }
        .metric-card .trend { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 600; color: #2E7D32; background: #E8F5E9; padding: 2px 10px; border-radius: var(--radius-badge); margin-top: 10px; }
        .metric-card .trend.down { color: #C62828; background: #FFEBEE; }

        /* Service card */
        .service-card { text-align: left; }

        /* Comparison */
        .comparison-block { padding: 28px; }
        .comparison-row { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
        .comparison-row .comp-label { flex: 0 0 100px; font-size: 13px; color: var(--muted); font-weight: 500; }
        .comparison-row .comp-bar-wrap { flex: 1; display: flex; align-items: center; gap: 10px; }
        .comp-bar { height: 10px; border-radius: 5px; background: var(--bg-alt); overflow: hidden; flex: 1; }
        .comp-bar .fill { height: 100%; border-radius: 5px; background: var(--primary); }
        .comp-bar .fill.yellow { background: var(--yellow); }
        .comp-bar .fill.dark { background: var(--ink); }
        .comp-value { font-weight: 700; font-size: 14px; font-family: var(--font-mono); min-width: 42px; text-align: right; }

        /* Timeline */
        .timeline { position: relative; padding-left: 32px; }
        .timeline::before { content: ''; position: absolute; left: 10px; top: 4px; bottom: 4px; width: 2px; background: var(--border); }
        .timeline-item { position: relative; padding-bottom: 28px; }
        .timeline-item:last-child { padding-bottom: 0; }
        .timeline-item::before {
            content: ''; position: absolute; left: -27px; top: 4px; width: 14px; height: 14px;
            background: var(--primary); border: 3px solid var(--primary-soft); border-radius: 50%;
        }
        .timeline-item .tl-year { font-size: 14px; font-weight: 700; color: var(--primary); font-family: var(--font-mono); }
        .timeline-item h3 { font-size: 16px; font-weight: 700; margin: 4px 0 6px; }
        .timeline-item p { color: var(--muted); font-size: 14px; }

        /* Chips */
        .chip {
            display: inline-flex; align-items: center; gap: 4px;
            background: var(--bg-alt); border-radius: var(--radius-badge);
            padding: 3px 12px; font-size: 12px; font-weight: 600; color: var(--ink-soft);
        }
        .chip-primary { background: var(--primary-soft); color: var(--primary); }
        .chip-yellow { background: #FFF8E1; color: #7A5C00; }
        .chip-outline { background: transparent; border: 1px solid var(--primary); color: var(--primary); }

        /* List card */
        .list-card { display: flex; gap: 16px; padding: 16px; align-items: flex-start; }
        .list-card .thumb { flex-shrink: 0; width: 120px; height: 80px; border-radius: 6px; overflow: hidden; background: var(--bg-alt); }
        .list-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
        .list-card .content h4 { font-size: 16px; font-weight: 700; margin-bottom: 4px; line-height: 1.4; }
        .list-card .content p { font-size: 13px; color: var(--muted); line-height: 1.6; }
        .list-card .meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--muted); margin-top: 6px; }

        /* FAQ */
        .faq-item { border-bottom: 1px solid var(--border); }
        .faq-question {
            width: 100%; background: none; border: none; padding: 16px 0; cursor: pointer;
            display: flex; align-items: center; justify-content: space-between; gap: 12px;
            font-weight: 600; font-size: 16px; text-align: left; color: var(--ink);
            transition: color var(--transition);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question .faq-icon {
            width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0;
            background: var(--primary-soft); color: var(--primary);
            display: flex; align-items: center; justify-content: center;
            font-weight: 700; font-size: 18px; transition: transform var(--transition);
        }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.25s ease, padding 0.25s ease; }
        .faq-answer-inner { padding: 0 0 18px; color: var(--muted); font-size: 14px; line-height: 1.8; }
        .faq-item.open .faq-answer { max-height: 280px; }
        .faq-item.open .faq-icon { transform: rotate(45deg); }

        /* Form */
        .form-grid { display: grid; gap: 16px; }
        .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
        .form-field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
        .form-field input, .form-field select, .form-field textarea {
            width: 100%; height: 42px; padding: 0 12px; border: 1px solid var(--border);
            border-radius: var(--radius-badge); background: var(--white); color: var(--ink);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .form-field textarea { height: 100px; padding: 10px 12px; resize: vertical; }
        .form-field input:focus, .form-field select:focus, .form-field textarea:focus {
            outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(227,62,62,0.12);
        }
        .form-field .error { color: var(--primary); font-size: 12px; margin-top: 4px; display: none; }
        .form-field.invalid input, .form-field.invalid select, .form-field.invalid textarea { border-color: var(--primary); }
        .form-field.invalid .error { display: block; }

        /* Partner logo */
        .partner-grid { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
        .partner-logo {
            width: 140px; height: 60px; border: 1px solid var(--border); border-radius: 6px;
            display: flex; align-items: center; justify-content: center; color: var(--muted);
            font-weight: 600; font-size: 13px; background: var(--white); transition: all var(--transition);
        }
        .partner-logo:hover { border-color: var(--primary); color: var(--primary); }

        /* Data insight */
        .insight-bar-wrap { display: flex; flex-direction: column; gap: 14px; }
        .insight-row { display: flex; align-items: center; gap: 12px; }
        .insight-row .insight-label { flex: 0 0 110px; font-size: 13px; font-weight: 600; }
        .insight-row .insight-bar { flex: 1; height: 24px; background: var(--bg-alt); border-radius: 4px; overflow: hidden; }
        .insight-row .insight-bar .fill { height: 100%; border-radius: 4px; background: var(--primary); display: flex; align-items: center; justify-content: flex-end; padding-right: 8px; font-size: 11px; color: white; font-weight: 600; }

        /* Footer */
        .site-footer { background: var(--bg-dark); color: #AAAAAA; padding: 48px 0 100px; }
        .footer-grid { display: grid; grid-template-columns: 1.2fr 0.8fr 0.8fr; gap: 40px; margin-bottom: 32px; }
        .footer-brand .brand { color: white; margin-bottom: 12px; }
        .footer-brand p { font-size: 13px; line-height: 1.8; max-width: 280px; }
        .footer-links h4 { color: #EEEEEE; font-size: 15px; margin-bottom: 12px; }
        .footer-links ul { list-style: none; }
        .footer-links li { margin-bottom: 8px; }
        .footer-links a { font-size: 13px; color: #AAAAAA; transition: color var(--transition); }
        .footer-links a:hover { color: var(--yellow); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px;
            display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center;
            font-size: 12px;
        }
        .footer-bottom a { color: #AAAAAA; transition: color var(--transition); }
        .footer-bottom a:hover { color: var(--yellow); }
        .beian-info { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }

        /* Responsive */
        @media (max-width: 1024px) {
            :root { --section-pad: 56px; }
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
            .hero-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            :root { --section-pad: 40px; --nav-height: 56px; }
            .desktop-nav { display: none; }
            .header-cta { display: none; }
            .burger { display: flex; }
            .hero { padding: 48px 0 56px; }
            .hero-title { font-size: 30px; }
            .hero-subtitle { font-size: 14px; }
            .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
            .form-row { grid-template-columns: 1fr; }
            .mobile-tabs { display: flex; }
            body { padding-bottom: var(--tab-height); }
            .site-footer { padding-bottom: 80px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .list-card { flex-direction: column; }
            .list-card .thumb { width: 100%; height: 160px; }
        }

        @media (max-width: 520px) {
            .hero-title { font-size: 26px; }
            .hero-ctas { flex-direction: column; }
            .hero-ctas .btn { width: 100%; }
            .section-head h2 { font-size: 22px; }
            .metric-card .metric-value { font-size: 30px; }
        }

        /* utility */
        .text-primary { color: var(--primary); }
        .text-yellow { color: var(--yellow); }
        .fw-700 { font-weight: 700; }
        .fw-800 { font-weight: 800; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-16 { gap: 16px; }
        .flex-between { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* roulang page: category2 */
:root {
            --primary: #E33E3E;
            --primary-dark: #C62C2C;
            --primary-soft: #FDE9E9;
            --ink: #1A1A1A;
            --ink-soft: #3A3A3A;
            --muted: #6B6560;
            --yellow: #F5B301;
            --yellow-ink: #1A1A1A;
            --bg: #FAF8F5;
            --bg-alt: #F0F0F0;
            --bg-dark: #1A1A1A;
            --border: #E2DED9;
            --white: #FFFFFF;
            --radius-card: 8px;
            --radius-btn: 6px;
            --radius-badge: 4px;
            --shadow-card: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-nav: 0 2px 12px rgba(0,0,0,0.06);
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-mono: "DIN Alternate", "Roboto Mono", "Segoe UI", monospace;
            --transition: 0.2s ease;
            --container: 1120px;
            --tab-height: 56px;
            --nav-height: 64px;
            --section-pad: 56px;
        }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--ink);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding-bottom: 56px;
        }
        a { color: inherit; text-decoration: none; }
        img { max-width: 100%; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        .container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
        .section { padding: var(--section-pad) 0; }
        .section-alt { background: var(--bg-alt); }
        .section-dark { background: var(--bg-dark); color: #F5F5F5; }

        /* Header */
        .site-header {
            position: sticky; top: 0; z-index: 1000;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-nav); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
        .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; letter-spacing: 0.5px; }
        .brand-mark {
            width: 34px; height: 34px; background: var(--primary); color: white;
            display: flex; align-items: center; justify-content: center;
            border-radius: 6px; font-size: 18px; font-weight: 700; flex-shrink: 0;
        }
        .brand-text { white-space: nowrap; }
        .desktop-nav { display: flex; align-items: center; gap: 28px; list-style: none; margin: 0; padding: 0; }
        .desktop-nav a { font-weight: 500; color: var(--ink-soft); position: relative; padding: 18px 0; transition: color var(--transition); }
        .desktop-nav a:hover { color: var(--primary); }
        .desktop-nav a.active { color: var(--primary); }
        .desktop-nav a.active::after {
            content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 3px;
            background: var(--primary); border-radius: 2px 2px 0 0;
        }
        .header-cta {
            display: inline-flex; align-items: center; gap: 6px;
            background: var(--primary); color: white;
            padding: 8px 18px; border-radius: var(--radius-btn);
            font-weight: 600; font-size: 14px; border: none; cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }
        .header-cta:hover { background: var(--primary-dark); box-shadow: 0 4px 14px rgba(227,62,62,0.35); }
        .header-cta:focus { outline: 2px solid var(--yellow); outline-offset: 2px; }
        .burger {
            display: none; background: none; border: none; cursor: pointer;
            flex-direction: column; gap: 5px; padding: 4px;
        }
        .burger span { display: block; width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: var(--transition); }
        .mobile-menu {
            display: none; position: fixed; top: var(--nav-height); left: 0; right: 0;
            background: var(--bg); border-bottom: 1px solid var(--border); padding: 16px 20px;
            z-index: 999; flex-direction: column; gap: 8px;
        }
        .mobile-menu.open { display: flex; }
        .mobile-menu a { font-weight: 500; padding: 10px 12px; border-radius: 6px; color: var(--ink-soft); }
        .mobile-menu a:hover { background: var(--primary-soft); color: var(--primary); }
        .mobile-menu a.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }

        /* Mobile bottom tabs */
        .mobile-tabs {
            display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 1000;
            background: var(--bg); border-top: 1px solid var(--border);
            height: var(--tab-height); padding-bottom: env(safe-area-inset-bottom);
            box-shadow: 0 -2px 10px rgba(0,0,0,0.04);
            justify-content: space-around; align-items: center;
        }
        .mobile-tabs a {
            display: flex; flex-direction: column; align-items: center; gap: 2px;
            font-size: 11px; color: var(--muted); font-weight: 500;
            transition: color var(--transition); flex: 1; padding: 4px 0;
        }
        .mobile-tabs a .tab-icon { font-size: 18px; line-height: 1; }
        .mobile-tabs a.active { color: var(--primary); background: var(--primary-soft); border-radius: 8px 8px 0 0; }

        /* Breadcrumb */
        .breadcrumb { padding: 20px 0 0; font-size: 13px; color: var(--muted); }
        .breadcrumb a { color: var(--muted); transition: color var(--transition); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb .sep { margin: 0 8px; color: var(--border); }

        /* Category Header */
        .cat-header { padding: 28px 0 36px; border-bottom: 1px solid var(--border); background: var(--white); }
        .cat-header h1 { font-size: 32px; font-weight: 700; margin: 0 0 12px; color: var(--ink); line-height: 1.3; }
        .cat-header p { font-size: 16px; color: var(--muted); margin: 0; max-width: 680px; line-height: 1.9; }

        /* Filter Bar */
        .filter-bar {
            display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
            padding: 20px 0; border-bottom: 1px solid var(--border);
        }
        .filter-tag {
            padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 500;
            cursor: pointer; transition: all var(--transition); border: 1px solid var(--border);
            background: var(--white); color: var(--ink-soft);
        }
        .filter-tag:hover { border-color: var(--primary); color: var(--primary); }
        .filter-tag.active { background: var(--primary); color: white; border-color: var(--primary); }
        .filter-tag:focus { outline: 2px solid var(--yellow); outline-offset: 2px; }

        /* Layout */
        .layout-grid { display: grid; grid-template-columns: 1fr 320px; gap: 32px; padding: 32px 0; }

        /* Ranking list */
        .ranking-list { display: flex; flex-direction: column; gap: 16px; }
        .rank-item {
            background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-card);
            padding: 20px 24px; display: flex; align-items: center; gap: 18px;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .rank-item:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }
        .rank-number {
            font-family: var(--font-mono); font-size: 28px; font-weight: 700;
            color: var(--primary); min-width: 44px; text-align: center; flex-shrink: 0;
        }
        .rank-number.gold { color: var(--yellow); }
        .rank-info { flex: 1; }
        .rank-info h3 { font-size: 17px; font-weight: 600; margin: 0 0 4px; color: var(--ink); line-height: 1.4; }
        .rank-info p { font-size: 13px; color: var(--muted); margin: 0; line-height: 1.6; }
        .rank-meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--muted); margin-top: 6px; flex-wrap: wrap; }
        .rank-badge {
            display: inline-block; padding: 2px 10px; border-radius: var(--radius-badge);
            font-size: 12px; font-weight: 600; background: var(--primary-soft); color: var(--primary);
        }
        .rank-badge.yellow { background: #FFF8E1; color: #B8860B; }
        .rank-score { font-family: var(--font-mono); font-size: 20px; font-weight: 700; color: var(--ink); text-align: right; min-width: 60px; }
        .rank-trend { font-size: 12px; color: #2E7D32; font-weight: 600; }
        .rank-trend.down { color: var(--primary); }

        /* Sidebar */
        .sidebar { display: flex; flex-direction: column; gap: 24px; }
        .sidebar-card {
            background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-card);
            padding: 20px; box-shadow: var(--shadow-card);
        }
        .sidebar-card h3 { font-size: 16px; font-weight: 600; margin: 0 0 14px; color: var(--ink); }
        .sidebar-stat-item { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border); }
        .sidebar-stat-item:last-child { border-bottom: none; }
        .sidebar-stat-label { font-size: 13px; color: var(--muted); }
        .sidebar-stat-value { font-family: var(--font-mono); font-size: 18px; font-weight: 700; color: var(--primary); }
        .sidebar-rec-item { display: flex; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--border); align-items: center; }
        .sidebar-rec-item:last-child { border-bottom: none; }
        .sidebar-rec-item img { width: 50px; height: 50px; border-radius: 6px; object-fit: cover; flex-shrink: 0; }
        .sidebar-rec-info h4 { font-size: 13px; font-weight: 500; margin: 0 0 2px; line-height: 1.4; }
        .sidebar-rec-info span { font-size: 11px; color: var(--muted); }

        /* Related articles */
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding-top: 8px; }
        .related-card {
            background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-card);
            overflow: hidden; transition: box-shadow var(--transition), transform var(--transition);
        }
        .related-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }
        .related-card img { width: 100%; height: 140px; object-fit: cover; }
        .related-card-content { padding: 16px; }
        .related-card-content h3 { font-size: 15px; font-weight: 600; margin: 0 0 6px; line-height: 1.5; }
        .related-card-content p { font-size: 13px; color: var(--muted); margin: 0 0 10px; line-height: 1.6; }
        .related-card-meta { font-size: 11px; color: var(--muted); display: flex; gap: 12px; }

        /* FAQ */
        .faq-list { display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-card);
            overflow: hidden; transition: border-color var(--transition);
        }
        .faq-item.open { border-color: var(--primary); }
        .faq-question {
            width: 100%; background: none; border: none; cursor: pointer;
            display: flex; justify-content: space-between; align-items: center;
            padding: 16px 20px; font-size: 15px; font-weight: 600; color: var(--ink);
            text-align: left; transition: background var(--transition);
        }
        .faq-question:hover { background: var(--bg-alt); }
        .faq-question .icon { font-size: 20px; color: var(--primary); font-weight: 700; transition: transform var(--transition); }
        .faq-item.open .faq-question .icon { transform: rotate(45deg); }
        .faq-answer { padding: 0 20px 18px; font-size: 14px; color: var(--muted); line-height: 1.8; display: none; }
        .faq-item.open .faq-answer { display: block; animation: fadeIn 0.2s ease; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }

        /* Subscribe */
        .subscribe-box {
            background: var(--white); border: 2px solid var(--primary); border-radius: var(--radius-card);
            padding: 32px 28px; display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center;
        }
        .subscribe-box h3 { font-size: 18px; font-weight: 600; margin: 0 0 6px; }
        .subscribe-box p { font-size: 14px; color: var(--muted); margin: 0; }
        .subscribe-form { display: flex; gap: 10px; }
        .subscribe-form input {
            height: 42px; padding: 0 16px; border: 1px solid var(--border); border-radius: var(--radius-btn);
            background: var(--white); min-width: 220px; font-size: 14px; transition: border-color var(--transition);
        }
        .subscribe-form input:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px var(--primary-soft); }
        .btn-primary {
            display: inline-flex; align-items: center; justify-content: center; gap: 6px;
            background: var(--primary); color: white; padding: 10px 24px; border-radius: var(--radius-btn);
            font-weight: 600; font-size: 14px; border: none; cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }
        .btn-primary:hover { background: var(--primary-dark); box-shadow: 0 4px 14px rgba(227,62,62,0.35); }
        .btn-primary:focus { outline: 2px solid var(--yellow); outline-offset: 2px; }

        /* Bottom CTA */
        .bottom-cta {
            background: var(--bg-dark); color: #F5F5F5; text-align: center;
            padding: 40px 20px; border-radius: var(--radius-card); margin-top: 8px;
        }
        .bottom-cta h2 { font-size: 24px; font-weight: 700; margin: 0 0 8px; }
        .bottom-cta p { font-size: 15px; color: #BDBDBD; margin: 0 0 20px; }
        .btn-outline-light {
            display: inline-flex; align-items: center; gap: 6px;
            background: transparent; color: #F5F5F5; border: 1px solid #F5F5F5;
            padding: 10px 24px; border-radius: var(--radius-btn); font-weight: 600; font-size: 14px;
            cursor: pointer; transition: all var(--transition);
        }
        .btn-outline-light:hover { background: rgba(255,255,255,0.12); }
        .btn-outline-light:focus { outline: 2px solid var(--yellow); outline-offset: 2px; }

        /* Footer */
        .site-footer {
            background: var(--bg-dark); color: #BDBDBD; padding: 40px 0 20px;
            margin-top: 0;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; padding-bottom: 24px; border-bottom: 1px solid #333; }
        .footer-brand .brand { color: #F5F5F5; font-size: 17px; }
        .footer-brand .brand-mark { background: var(--primary); }
        .footer-brand p { font-size: 13px; line-height: 1.8; color: #9E9E9E; max-width: 420px; margin: 12px 0 0; }
        .footer-links h4 { color: #F5F5F5; font-size: 14px; margin: 0 0 12px; font-weight: 600; }
        .footer-links ul { list-style: none; margin: 0; padding: 0; }
        .footer-links li { margin-bottom: 6px; }
        .footer-links a { font-size: 13px; color: #BDBDBD; transition: color var(--transition); }
        .footer-links a:hover { color: var(--primary); }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap;
            gap: 12px; padding-top: 20px; font-size: 12px; color: #9E9E9E;
        }
        .footer-bottom a { color: #BDBDBD; transition: color var(--transition); }
        .footer-bottom a:hover { color: var(--primary); }
        .beian-info { display: flex; gap: 16px; flex-wrap: wrap; }

        /* Responsive */
        @media (max-width: 1024px) {
            .layout-grid { grid-template-columns: 1fr; }
            .sidebar { flex-direction: row; flex-wrap: wrap; }
            .sidebar-card { flex: 1 1 260px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            :root { --section-pad: 40px; --nav-height: 56px; }
            .desktop-nav { display: none; }
            .header-cta { display: none; }
            .burger { display: flex; }
            .mobile-tabs { display: flex; }
            .cat-header h1 { font-size: 24px; }
            .filter-bar { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 12px; scrollbar-width: none; }
            .filter-bar::-webkit-scrollbar { display: none; }
            .filter-tag { flex-shrink: 0; }
            .rank-item { flex-wrap: wrap; padding: 16px; }
            .rank-number { font-size: 22px; min-width: 32px; }
            .rank-score { font-size: 16px; }
            .related-grid { grid-template-columns: 1fr; }
            .subscribe-box { grid-template-columns: 1fr; }
            .subscribe-form { flex-direction: column; }
            .subscribe-form input { min-width: auto; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .beian-info { justify-content: center; }
        }
        @media (max-width: 480px) {
            .sidebar { flex-direction: column; }
            .sidebar-card { flex: 1 1 auto; }
            .rank-info h3 { font-size: 15px; }
            .cat-header h1 { font-size: 20px; }
            .cat-header p { font-size: 14px; }
            .bottom-cta h2 { font-size: 20px; }
        }

/* roulang page: category1 */
:root {
            --primary: #E33E3E;
            --primary-dark: #C62C2C;
            --primary-soft: #FDE9E9;
            --ink: #1A1A1A;
            --ink-soft: #3A3A3A;
            --muted: #6B6560;
            --yellow: #F5B301;
            --yellow-ink: #1A1A1A;
            --bg: #FAF8F5;
            --bg-alt: #F0F0F0;
            --bg-dark: #1A1A1A;
            --border: #E2DED9;
            --white: #FFFFFF;
            --radius-card: 8px;
            --radius-btn: 6px;
            --radius-badge: 4px;
            --shadow-card: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-nav: 0 2px 12px rgba(0,0,0,0.06);
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-mono: "DIN Alternate", "Roboto Mono", "Segoe UI", monospace;
            --transition: 0.2s ease;
            --container: 1120px;
            --tab-height: 56px;
            --nav-height: 64px;
            --section-pad: 56px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--ink);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }

        img {
            max-width: 100%;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
        }

        .section {
            padding: var(--section-pad) 0;
        }

        .section-alt {
            background: var(--bg-alt);
        }

        .section-dark {
            background: var(--bg-dark);
            color: #F5F5F5;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 19px;
            letter-spacing: 0.5px;
        }

        .brand-mark {
            width: 34px;
            height: 34px;
            background: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .brand-text {
            white-space: nowrap;
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .desktop-nav a {
            font-weight: 500;
            color: var(--ink-soft);
            position: relative;
            padding: 18px 0;
            transition: color var(--transition);
        }

        .desktop-nav a:hover {
            color: var(--primary);
        }

        .desktop-nav a.active {
            color: var(--primary);
        }

        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 3px;
            background: var(--primary);
            border-radius: 2px 2px 0 0;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: white;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }

        .header-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(227,62,62,0.35);
        }

        .header-cta:focus {
            outline: 2px solid var(--yellow);
            outline-offset: 2px;
        }

        .burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
            align-items: center;
            justify-content: center;
        }

        .burger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: all 0.25s ease;
        }

        .burger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .burger.open span:nth-child(2) {
            opacity: 0;
        }

        .burger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            padding: 16px 20px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.08);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            font-weight: 500;
            padding: 10px 12px;
            border-radius: 6px;
            color: var(--ink-soft);
        }

        .mobile-menu a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .mobile-menu a.active {
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 600;
        }

        /* Mobile bottom tabs */
        .mobile-tabs {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg);
            border-top: 1px solid var(--border);
            height: var(--tab-height);
            padding-bottom: env(safe-area-inset-bottom);
            box-shadow: 0 -2px 10px rgba(0,0,0,0.04);
            justify-content: space-around;
            align-items: center;
        }

        .mobile-tabs a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 11px;
            color: var(--muted);
            font-weight: 500;
            transition: color var(--transition);
            flex: 1;
            padding: 4px 0;
            min-width: 0;
        }

        .mobile-tabs a .tab-icon {
            font-size: 18px;
            line-height: 1;
        }

        .mobile-tabs a.active {
            color: var(--primary);
            background: var(--primary-soft);
            border-radius: 8px 8px 0 0;
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            padding: 20px 0 0;
            background: var(--bg);
        }

        .breadcrumb {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
            flex-wrap: wrap;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li:not(:last-child)::after {
            content: '/';
            color: var(--border);
            font-size: 12px;
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Page header */
        .page-header {
            padding: 32px 0 28px;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
        }

        .page-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0.5px;
            line-height: 1.3;
        }

        .page-header .subtitle {
            font-size: 15px;
            color: var(--muted);
            margin-top: 8px;
            max-width: 720px;
            line-height: 1.9;
        }

        /* Category intro + filter */
        .category-intro {
            padding: 28px 0 20px;
            background: var(--bg);
        }

        .filter-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 16px;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: 20px;
            border: 1px solid var(--border);
            background: var(--white);
            color: var(--ink-soft);
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition);
            user-select: none;
        }

        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .filter-tag.active {
            background: var(--primary);
            border-color: var(--primary);
            color: white;
        }

        .filter-tag .count {
            font-size: 11px;
            font-weight: 400;
            margin-left: 5px;
            opacity: 0.75;
        }

        /* Main content layout */
        .content-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 32px;
            padding: 32px 0 48px;
            background: var(--bg);
        }

        /* Info list */
        .info-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .info-card {
            display: grid;
            grid-template-columns: 220px 1fr;
            gap: 20px;
            background: var(--white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
            cursor: pointer;
        }

        .info-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .info-card-thumb {
            position: relative;
            min-height: 100%;
            overflow: hidden;
            background: var(--bg-alt);
        }

        .info-card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .info-card:hover .info-card-thumb img {
            transform: scale(1.04);
        }

        .info-card-body {
            padding: 18px 20px 18px 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 8px;
        }

        .info-card-tag {
            display: inline-block;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: var(--radius-badge);
            width: fit-content;
            letter-spacing: 0.5px;
        }

        .info-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.5;
            transition: color var(--transition);
        }

        .info-card:hover .info-card-title {
            color: var(--primary);
        }

        .info-card-desc {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .info-card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 12px;
            color: var(--muted);
            margin-top: 4px;
        }

        .info-card-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        .list-more {
            display: flex;
            justify-content: center;
            margin-top: 8px;
        }

        .btn-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: white;
            padding: 10px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition);
            border: none;
        }

        .btn-more:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(227,62,62,0.35);
        }

        /* Sidebar */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: var(--white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 20px;
        }

        .sidebar-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-soft);
            position: relative;
        }

        .sidebar-card h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 40px;
            height: 2px;
            background: var(--primary);
        }

        .side-item {
            display: flex;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            align-items: center;
            transition: all var(--transition);
            cursor: pointer;
        }

        .side-item:last-child {
            border-bottom: none;
        }

        .side-item:hover .side-item-title {
            color: var(--primary);
        }

        .side-item-thumb {
            width: 56px;
            height: 56px;
            border-radius: 6px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-alt);
        }

        .side-item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .side-item-info {
            flex: 1;
            min-width: 0;
        }

        .side-item-title {
            font-size: 13px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.5;
            transition: color var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .side-item-date {
            font-size: 11px;
            color: var(--muted);
            margin-top: 4px;
        }

        /* Stats section */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            padding: 32px 0;
        }

        .stat-card {
            background: var(--white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 24px 20px;
            text-align: center;
            transition: transform var(--transition), box-shadow var(--transition);
            position: relative;
            overflow: hidden;
        }

        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            border-radius: 2px 2px 0 0;
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .stat-number {
            font-family: var(--font-mono);
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--muted);
            margin-top: 6px;
            font-weight: 500;
        }

        .stat-trend {
            display: inline-block;
            margin-top: 8px;
            font-size: 12px;
            font-weight: 600;
            color: #2E7D32;
            background: #E8F5E9;
            padding: 2px 10px;
            border-radius: var(--radius-badge);
        }

        .stat-trend.down {
            color: #C62828;
            background: #FFEBEE;
        }

        /* Related content */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
            cursor: pointer;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .related-thumb {
            aspect-ratio: 16/9;
            background: var(--bg-alt);
            overflow: hidden;
        }

        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .related-card:hover .related-thumb img {
            transform: scale(1.04);
        }

        .related-body {
            padding: 14px 16px;
        }

        .related-tag {
            font-size: 11px;
            color: var(--primary);
            font-weight: 600;
            display: block;
            margin-bottom: 4px;
        }

        .related-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }

        .related-card:hover .related-title {
            color: var(--primary);
        }

        .related-meta {
            font-size: 11px;
            color: var(--muted);
            margin-top: 6px;
        }

        /* Subscribe section */
        .subscribe-panel {
            background: var(--bg-dark);
            border-radius: var(--radius-card);
            padding: 40px 32px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
            margin: 32px 0;
            position: relative;
            overflow: hidden;
        }

        .subscribe-panel::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 200px;
            height: 200px;
            background: var(--primary);
            opacity: 0.15;
            border-radius: 0 0 0 100%;
            pointer-events: none;
        }

        .subscribe-info {
            color: white;
            position: relative;
            z-index: 1;
        }

        .subscribe-info h2 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 10px;
            color: white;
        }

        .subscribe-info p {
            font-size: 14px;
            color: rgba(255,255,255,0.75);
            line-height: 1.8;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
        }

        .subscribe-form input[type="email"] {
            flex: 1;
            min-width: 200px;
            height: 44px;
            padding: 0 16px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255,255,255,0.3);
            background: rgba(255,255,255,0.1);
            color: white;
            font-size: 14px;
            transition: border-color var(--transition), background var(--transition);
        }

        .subscribe-form input[type="email"]::placeholder {
            color: rgba(255,255,255,0.55);
        }

        .subscribe-form input[type="email"]:focus {
            border-color: var(--yellow);
            background: rgba(255,255,255,0.18);
            outline: none;
        }

        .btn-subscribe {
            height: 44px;
            padding: 0 24px;
            background: var(--yellow);
            color: var(--yellow-ink);
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 14px;
            cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition);
            white-space: nowrap;
            border: none;
        }

        .btn-subscribe:hover {
            background: #FFC107;
            box-shadow: 0 4px 14px rgba(245,179,1,0.4);
        }

        .btn-subscribe:focus {
            outline: 2px solid white;
            outline-offset: 2px;
        }

        .subscribe-note {
            font-size: 11px;
            color: rgba(255,255,255,0.5);
            margin-top: 8px;
        }

        /* CTA banner */
        .cta-banner {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            margin: 32px 0 0;
        }

        .cta-banner-text {
            color: white;
            flex: 1;
            min-width: 240px;
        }

        .cta-banner-text h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 6px;
            color: white;
        }

        .cta-banner-text p {
            font-size: 14px;
            color: rgba(255,255,255,0.85);
            line-height: 1.7;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: white;
            color: var(--primary);
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 14px;
            cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition);
            white-space: nowrap;
            border: none;
        }

        .btn-cta:hover {
            background: var(--bg);
            box-shadow: 0 4px 16px rgba(0,0,0,0.15);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: #D5D5D5;
            padding: 48px 0 24px;
            margin-top: 0;
            border-top: 1px solid #2A2A2A;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid #2A2A2A;
        }

        .footer-brand .brand {
            color: white;
            margin-bottom: 12px;
        }

        .footer-brand .brand-mark {
            width: 32px;
            height: 32px;
            font-size: 16px;
        }

        .footer-brand .brand-text {
            font-size: 17px;
        }

        .footer-brand p {
            font-size: 13px;
            color: #9A9A9A;
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-links h4 {
            color: white;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 13px;
            color: #9A9A9A;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            font-size: 12px;
            color: #8A8A8A;
        }

        .footer-bottom .beian-info {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: #8A8A8A;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --section-pad: 48px;
            }

            .content-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .sidebar-card {
                padding: 16px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .subscribe-panel {
                grid-template-columns: 1fr;
                padding: 28px 24px;
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad: 40px;
                --nav-height: 56px;
            }

            body {
                padding-bottom: var(--tab-height);
                font-size: 14px;
            }

            .desktop-nav {
                display: none;
            }

            .header-cta {
                display: none;
            }

            .burger {
                display: flex;
            }

            .mobile-tabs {
                display: flex;
            }

            .mobile-menu {
                top: var(--nav-height);
            }

            .page-header h1 {
                font-size: 26px;
            }

            .content-layout {
                padding: 24px 0 32px;
                gap: 20px;
            }

            .info-card {
                grid-template-columns: 1fr;
                gap: 0;
            }

            .info-card-thumb {
                aspect-ratio: 16/9;
                min-height: auto;
            }

            .info-card-body {
                padding: 14px 16px 16px;
            }

            .info-card-title {
                font-size: 15px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
                padding: 24px 0;
            }

            .stat-number {
                font-size: 28px;
            }

            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .related-title {
                font-size: 13px;
            }

            .sidebar {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .footer-bottom .beian-info {
                flex-direction: column;
                gap: 4px;
            }

            .subscribe-panel {
                padding: 24px 20px;
                gap: 16px;
            }

            .subscribe-form {
                flex-direction: column;
            }

            .subscribe-form input[type="email"] {
                min-width: 100%;
            }

            .btn-subscribe {
                width: 100%;
                text-align: center;
                justify-content: center;
            }

            .cta-banner {
                padding: 24px 20px;
                flex-direction: column;
                align-items: flex-start;
            }

            .filter-tag {
                padding: 4px 12px;
                font-size: 12px;
            }

            .filter-tag .count {
                font-size: 10px;
            }
        }

        @media (max-width: 480px) {
            .related-grid {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .stat-card {
                padding: 16px 12px;
            }

            .stat-number {
                font-size: 24px;
            }

            .mobile-tabs a {
                font-size: 10px;
            }

            .mobile-tabs a .tab-icon {
                font-size: 16px;
            }

            .breadcrumb {
                font-size: 12px;
            }

            .page-header h1 {
                font-size: 22px;
            }

            .info-card-title {
                font-size: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #E33E3E;
            --primary-dark: #C62C2C;
            --primary-soft: #FDE9E9;
            --ink: #1A1A1A;
            --ink-soft: #3A3A3A;
            --muted: #6B6560;
            --yellow: #F5B301;
            --yellow-ink: #1A1A1A;
            --bg: #FAF8F5;
            --bg-alt: #F0F0F0;
            --bg-dark: #1A1A1A;
            --border: #E2DED9;
            --white: #FFFFFF;
            --radius-card: 8px;
            --radius-btn: 6px;
            --radius-badge: 4px;
            --shadow-card: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-nav: 0 2px 12px rgba(0,0,0,0.06);
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-mono: "DIN Alternate", "Roboto Mono", "Segoe UI", monospace;
            --transition: 0.2s ease;
            --container: 1120px;
            --tab-height: 56px;
            --nav-height: 64px;
            --section-pad: 64px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--ink);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }

        img {
            max-width: 100%;
            display: block;
        }

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
        }

        .section {
            padding: var(--section-pad) 0;
        }

        .section-alt {
            background: var(--bg-alt);
        }

        .section-dark {
            background: var(--bg-dark);
            color: #F5F5F5;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 19px;
            letter-spacing: 0.5px;
        }

        .brand-mark {
            width: 34px;
            height: 34px;
            background: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .brand-text {
            white-space: nowrap;
            color: var(--ink);
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .desktop-nav a {
            font-weight: 500;
            color: var(--ink-soft);
            position: relative;
            padding: 18px 0;
            display: inline-block;
            transition: color var(--transition);
        }

        .desktop-nav a:hover {
            color: var(--primary);
        }

        .desktop-nav a.active {
            color: var(--primary);
        }

        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 3px;
            background: var(--primary);
            border-radius: 2px 2px 0 0;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: white;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }

        .header-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(227,62,62,0.35);
            color: white;
        }

        .header-cta:focus {
            outline: 2px solid var(--yellow);
            outline-offset: 2px;
        }

        .burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
        }

        .burger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            padding: 16px 20px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            font-weight: 500;
            padding: 10px 12px;
            border-radius: 6px;
            color: var(--ink-soft);
        }

        .mobile-menu a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .mobile-menu a.active {
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== Mobile bottom tabs ===== */
        .mobile-tabs {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg);
            border-top: 1px solid var(--border);
            height: var(--tab-height);
            padding-bottom: env(safe-area-inset-bottom);
            box-shadow: 0 -2px 10px rgba(0,0,0,0.04);
            justify-content: space-around;
            align-items: center;
        }

        .mobile-tabs a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 11px;
            color: var(--muted);
            font-weight: 500;
            transition: color var(--transition);
            flex: 1;
            padding: 4px 0;
            text-align: center;
        }

        .mobile-tabs a .tab-icon {
            font-size: 18px;
            line-height: 1;
        }

        .mobile-tabs a.active {
            color: var(--primary);
            background: var(--primary-soft);
            border-radius: 8px 8px 0 0;
        }

        /* ===== Page Head ===== */
        .page-head {
            background: var(--bg);
            padding: 32px 0 24px;
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 10px;
        }

        .breadcrumb-custom a {
            color: var(--muted);
        }

        .breadcrumb-custom a:hover {
            color: var(--primary);
        }

        .breadcrumb-custom .sep {
            color: var(--border);
        }

        .breadcrumb-custom .current {
            color: var(--ink);
            font-weight: 500;
        }

        .page-head h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 10px;
            line-height: 1.3;
        }

        .page-head .head-desc {
            font-size: 15px;
            color: var(--muted);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        /* ===== Filter Bar ===== */
        .filter-bar {
            background: var(--bg);
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
        }

        .filter-bar .filter-inner {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .filter-bar .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
            white-space: nowrap;
        }

        .filter-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-tags .tag {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--ink-soft);
            background: var(--white);
            border: 1px solid var(--border);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-tags .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .filter-tags .tag.active {
            background: var(--primary);
            border-color: var(--primary);
            color: white;
        }

        /* ===== Article Cards ===== */
        .article-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .article-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--bg-alt);
        }

        .article-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .article-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .article-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--yellow);
            color: var(--yellow-ink);
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            font-size: 12px;
            font-weight: 700;
            z-index: 2;
        }

        .article-card .card-body-custom {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card .card-tag-row {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }

        .article-card .cat-tag {
            display: inline-flex;
            align-items: center;
            padding: 2px 10px;
            border-radius: var(--radius-badge);
            font-size: 12px;
            font-weight: 500;
            background: var(--primary-soft);
            color: var(--primary);
        }

        .article-card .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.5;
            margin: 0 0 8px;
            transition: color var(--transition);
        }

        .article-card .card-title a:hover {
            color: var(--primary);
        }

        .article-card .card-excerpt {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.8;
            margin-bottom: 14px;
            flex: 1;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 12px;
            color: var(--muted);
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }

        .article-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* ===== Stat Cards ===== */
        .stat-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
        }

        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .stat-card .stat-number {
            font-family: var(--font-mono);
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--muted);
            font-weight: 500;
        }

        .stat-card .stat-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
            margin-top: 8px;
        }

        /* ===== Side Recommend ===== */
        .side-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px;
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }

        .side-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .side-card .side-img {
            width: 72px;
            height: 72px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .side-card .side-info {
            flex: 1;
            min-width: 0;
        }

        .side-card .side-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.5;
            margin-bottom: 4px;
        }

        .side-card .side-meta {
            font-size: 12px;
            color: var(--muted);
        }

        /* ===== Related List ===== */
        .related-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .related-list li {
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .related-list li:last-child {
            border-bottom: none;
        }

        .related-list .rel-index {
            font-family: var(--font-mono);
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
            width: 28px;
        }

        .related-list .rel-info {
            flex: 1;
            min-width: 0;
        }

        .related-list .rel-title {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            line-height: 1.5;
            transition: color var(--transition);
        }

        .related-list a:hover .rel-title {
            color: var(--primary);
        }

        .related-list .rel-date {
            font-size: 12px;
            color: var(--muted);
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }

        .faq-question:hover {
            background: var(--primary-soft);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 18px;
            color: var(--primary);
            transition: transform var(--transition);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            background: var(--bg);
            padding: 0 20px;
            font-size: 14px;
            color: var(--muted);
            line-height: 1.9;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 16px 20px;
        }

        /* ===== Subscribe Form ===== */
        .subscribe-section {
            background: var(--bg-dark);
            color: #F5F5F5;
            padding: 56px 0;
        }

        .subscribe-section .subscribe-title {
            font-size: 24px;
            font-weight: 700;
            color: white;
            margin-bottom: 8px;
        }

        .subscribe-section .subscribe-desc {
            font-size: 14px;
            color: #C9C4BE;
            margin-bottom: 24px;
            line-height: 1.8;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .subscribe-form .form-control {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            padding: 10px 16px;
            height: 44px;
            color: var(--ink);
            flex: 1;
            min-width: 220px;
            font-size: 14px;
        }

        .subscribe-form .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(227,62,62,0.15);
        }

        .btn-hth-primary {
            background: var(--primary);
            color: white;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }

        .btn-hth-primary:hover {
            background: var(--primary-dark);
            color: white;
            box-shadow: 0 4px 14px rgba(227,62,62,0.35);
        }

        .btn-hth-primary:focus {
            outline: 2px solid var(--yellow);
            outline-offset: 2px;
        }

        .btn-hth-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }

        .btn-hth-outline:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .btn-hth-outline:focus {
            outline: 2px solid var(--yellow);
            outline-offset: 2px;
        }

        /* ===== Footer CTA ===== */
        .footer-cta {
            position: relative;
            overflow: hidden;
            background: var(--bg);
            padding: 64px 0;
        }

        .footer-cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/678a32b44ce88663.webp') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

        .footer-cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, rgba(250,248,245,0.92) 0%, rgba(250,248,245,0.75) 50%, rgba(250,248,245,0.55) 100%);
            z-index: 1;
        }

        .footer-cta .container {
            position: relative;
            z-index: 2;
        }

        .footer-cta .cta-box {
            background: var(--bg-dark);
            color: white;
            border-radius: var(--radius-card);
            padding: 32px 36px;
        }

        .footer-cta .cta-box h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 10px;
            color: white;
        }

        .footer-cta .cta-box p {
            font-size: 15px;
            color: #C9C4BE;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .footer-cta .cta-box .btn-hth-primary {
            background: var(--primary);
        }

        .footer-cta .cta-box .btn-hth-primary:hover {
            background: var(--primary-dark);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: #C9C4BE;
            padding: 48px 0 28px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-brand .brand-text {
            color: white;
        }

        .footer-brand p {
            font-size: 13px;
            color: #A9A49E;
            line-height: 1.8;
            margin-bottom: 0;
            max-width: 320px;
        }

        .footer-links h4 {
            color: white;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: #C9C4BE;
            font-size: 13px;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 12px;
            color: #A9A49E;
        }

        .footer-bottom .beian-info {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: #A9A49E;
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ===== Bootstrap overrides ===== */
        .btn {
            border-radius: var(--radius-btn);
            transition: all var(--transition);
        }

        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
        }

        .btn-primary:hover, .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .btn-primary:focus {
            box-shadow: 0 0 0 3px rgba(227,62,62,0.25);
        }

        .form-control {
            border-radius: var(--radius-btn);
            border: 1px solid var(--border);
            padding: 10px 14px;
            height: 42px;
            font-size: 14px;
            color: var(--ink);
            background: var(--white);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(227,62,62,0.12);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root {
                --section-pad: 48px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad: 40px;
                --nav-height: 56px;
                --tab-height: 56px;
            }
            body {
                padding-bottom: var(--tab-height);
            }
            .desktop-nav {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .burger {
                display: flex;
            }
            .mobile-tabs {
                display: flex;
            }
            .page-head h1 {
                font-size: 26px;
            }
            .article-card .card-img-wrap {
                aspect-ratio: 16/9;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-cta .cta-box {
                padding: 24px 20px;
            }
            .footer-cta .cta-box h2 {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .page-head h1 {
                font-size: 22px;
            }
            .article-card .card-title {
                font-size: 15px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form .form-control {
                min-width: 100%;
            }
            .filter-bar .filter-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-bottom .beian-info {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #E33E3E;
            --primary-dark: #C62C2C;
            --primary-soft: #FDE9E9;
            --ink: #1A1A1A;
            --ink-soft: #3A3A3A;
            --muted: #6B6560;
            --yellow: #F5B301;
            --yellow-ink: #1A1A1A;
            --bg: #FAF8F5;
            --bg-alt: #F0F0F0;
            --bg-dark: #1A1A1A;
            --border: #E2DED9;
            --white: #FFFFFF;
            --radius-card: 8px;
            --radius-btn: 6px;
            --radius-badge: 4px;
            --shadow-card: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-nav: 0 2px 12px rgba(0,0,0,0.06);
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-mono: "DIN Alternate", "Roboto Mono", "Segoe UI", monospace;
            --transition: 0.2s ease;
            --container: 1120px;
            --tab-height: 56px;
            --nav-height: 64px;
            --section-pad: 72px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--ink);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        img {
            max-width: 100%;
            display: block;
        }

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
        }

        .section {
            padding: var(--section-pad) 0;
        }

        .section-alt {
            background: var(--bg-alt);
        }

        .section-dark {
            background: var(--bg-dark);
            color: #F5F5F5;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 19px;
            letter-spacing: 0.5px;
        }

        .brand-mark {
            width: 34px;
            height: 34px;
            background: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .brand-text {
            white-space: nowrap;
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .desktop-nav a {
            font-weight: 500;
            color: var(--ink-soft);
            position: relative;
            padding: 18px 0;
            transition: color var(--transition);
        }

        .desktop-nav a:hover {
            color: var(--primary);
        }

        .desktop-nav a.active {
            color: var(--primary);
        }

        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 3px;
            background: var(--primary);
            border-radius: 2px 2px 0 0;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: white;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }

        .header-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(227,62,62,0.35);
        }

        .header-cta:focus {
            outline: 2px solid var(--yellow);
            outline-offset: 2px;
        }

        .burger {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 6px;
            width: 40px;
            height: 36px;
            cursor: pointer;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
        }

        .burger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--ink);
            border-radius: 1px;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            padding: 16px 20px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            font-weight: 500;
            padding: 10px 12px;
            border-radius: 6px;
            color: var(--ink-soft);
        }

        .mobile-menu a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .mobile-menu a.active {
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 600;
        }

        /* Mobile bottom tab */
        .mobile-tabs {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg);
            border-top: 1px solid var(--border);
            height: var(--tab-height);
            padding-bottom: env(safe-area-inset-bottom);
            box-shadow: 0 -2px 10px rgba(0,0,0,0.04);
            justify-content: space-around;
            align-items: center;
        }

        .mobile-tabs a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 11px;
            color: var(--muted);
            font-weight: 500;
            transition: color var(--transition);
            flex: 1;
            padding: 4px 0;
        }

        .mobile-tabs a .tab-icon {
            font-size: 18px;
            line-height: 1;
        }

        .mobile-tabs a.active {
            color: var(--primary);
            background: var(--primary-soft);
            border-radius: 8px 8px 0 0;
        }

        /* Buttons */
        .btn-primary-custom {
            background: var(--primary);
            color: white;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-weight: 600;
            font-size: 15px;
            transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(227,62,62,0.35);
            color: white;
        }

        .btn-primary-custom:focus {
            outline: 2px solid var(--yellow);
            outline-offset: 2px;
        }

        .btn-primary-custom:active {
            transform: translateY(1px);
        }

        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-weight: 600;
            font-size: 15px;
            transition: background var(--transition), color var(--transition), box-shadow var(--transition);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-custom:hover {
            background: var(--primary-soft);
            color: var(--primary-dark);
        }

        .btn-outline-custom:focus {
            outline: 2px solid var(--yellow);
            outline-offset: 2px;
        }

        /* Cards */
        .service-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition);
            height: 100%;
        }

        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .service-card .service-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-soft);
            color: var(--primary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
        }

        .service-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--ink);
        }

        .service-card p {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 0;
            line-height: 1.75;
        }

        /* Stats */
        .stat-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }

        .stat-number {
            font-family: var(--font-mono);
            font-size: 38px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-label {
            font-size: 14px;
            color: var(--muted);
            margin-top: 8px;
        }

        /* Process timeline */
        .process-step {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            height: 100%;
        }

        .process-step .step-number {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }

        .faq-item.open {
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            padding: 18px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--ink);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 12px;
            font-size: 15px;
        }

        .faq-question:hover {
            background: var(--primary-soft);
        }

        .faq-question .faq-icon {
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
            transition: transform var(--transition);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.25s ease, padding 0.25s ease;
            padding: 0 20px;
            color: var(--muted);
            font-size: 14px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        /* Form */
        .form-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
        }

        .form-card label {
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 6px;
            display: block;
        }

        .form-card .form-control {
            height: 42px;
            border: 1px solid var(--border);
            border-radius: var(--radius-badge);
            background: var(--white);
            font-size: 14px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .form-card .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px var(--primary-soft);
            outline: none;
        }

        .form-card textarea.form-control {
            height: auto;
            min-height: 100px;
        }

        /* Hero service */
        .hero-service {
            position: relative;
            overflow: hidden;
            padding: 72px 0 80px;
            background: var(--bg-dark);
            color: white;
        }

        .hero-service .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background: url('/assets/images/678a32b44ce88663.webp') center/cover no-repeat;
            opacity: 0.3;
        }

        .hero-service .hero-bg-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(135deg, rgba(26,26,26,0.9) 0%, rgba(26,26,26,0.7) 50%, rgba(227,62,62,0.55) 100%);
        }

        .hero-service .hero-container {
            position: relative;
            z-index: 2;
        }

        .hero-service .play-btn {
            width: 64px;
            height: 64px;
            background: var(--yellow);
            color: var(--yellow-ink);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            transition: transform var(--transition), box-shadow var(--transition);
            border: none;
        }

        .hero-service .play-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 8px 24px rgba(245,179,1,0.4);
        }

        .hero-service h1 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .hero-service .breadcrumb-service {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: #CCCCCC;
            margin-bottom: 16px;
        }

        .hero-service .breadcrumb-service a {
            color: var(--yellow);
        }

        .hero-service .hero-sub {
            font-size: 18px;
            color: #E0E0E0;
            max-width: 650px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .hero-service .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* Filter bar */
        .filter-bar {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .filter-bar .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            min-width: 200px;
        }

        .filter-bar .search-box input {
            height: 40px;
            border: 1px solid var(--border);
            border-radius: var(--radius-badge);
            padding: 0 14px;
            font-size: 14px;
            flex: 1;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .filter-bar .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px var(--primary-soft);
            outline: none;
        }

        .filter-bar .filter-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .filter-tags .filter-tag {
            padding: 6px 14px;
            border: 1px solid var(--primary);
            border-radius: var(--radius-badge);
            font-size: 13px;
            color: var(--ink);
            cursor: pointer;
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }

        .filter-tags .filter-tag:hover,
        .filter-tags .filter-tag.active {
            background: var(--primary);
            color: white;
        }

        /* Section titles */
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--muted);
            max-width: 700px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            background: var(--bg-dark);
            color: white;
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/f28e22111006760f.webp') center/cover no-repeat;
            opacity: 0.2;
        }

        .cta-section .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .cta-section p {
            font-size: 16px;
            color: #D0D0D0;
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .desktop-nav {
                gap: 20px;
            }
            .hero-service h1 {
                font-size: 32px;
            }
        }

        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .burger {
                display: flex;
            }
            .header-cta {
                display: none;
            }
            .mobile-tabs {
                display: flex;
            }
            .section {
                padding: 40px 0;
            }
            .hero-service {
                padding: 48px 0 56px;
            }
            .hero-service h1 {
                font-size: 28px;
            }
            .hero-service .hero-sub {
                font-size: 16px;
            }
            .section-title {
                font-size: 24px;
            }
            body {
                padding-bottom: var(--tab-height);
            }
        }

        @media (max-width: 520px) {
            .mobile-tabs a {
                font-size: 10px;
            }
            .mobile-tabs a .tab-icon {
                font-size: 16px;
            }
            .hero-service h1 {
                font-size: 24px;
            }
            .stat-number {
                font-size: 30px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #E33E3E;
            --primary-dark: #C62C2C;
            --primary-soft: #FDE9E9;
            --ink: #1A1A1A;
            --ink-soft: #3A3A3A;
            --muted: #6B6560;
            --yellow: #F5B301;
            --yellow-ink: #1A1A1A;
            --bg: #FAF8F5;
            --bg-alt: #F0F0F0;
            --bg-dark: #1A1A1A;
            --border: #E2DED9;
            --white: #FFFFFF;
            --radius-card: 8px;
            --radius-btn: 6px;
            --radius-badge: 4px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.10);
            --shadow-nav: 0 2px 12px rgba(0, 0, 0, 0.06);
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --font-mono: "DIN Alternate", "Roboto Mono", "Segoe UI", monospace;
            --transition: 0.2s ease;
            --container: 1120px;
            --tab-height: 56px;
            --nav-height: 64px;
            --section-pad: 56px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--ink);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: var(--section-pad) 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: #F5F5F5;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 19px;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .brand-mark {
            width: 34px;
            height: 34px;
            background: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .brand-text {
            white-space: nowrap;
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
        }
        .desktop-nav a {
            font-weight: 500;
            color: var(--ink-soft);
            position: relative;
            padding: 18px 0;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .desktop-nav a:hover {
            color: var(--primary);
        }
        .desktop-nav a.active {
            color: var(--primary);
        }
        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 3px;
            background: var(--primary);
            border-radius: 2px 2px 0 0;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: white;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .header-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(227, 62, 62, 0.35);
        }
        .header-cta:focus {
            outline: 2px solid var(--yellow);
            outline-offset: 2px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            padding: 16px 20px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-weight: 500;
            padding: 10px 12px;
            border-radius: 6px;
            color: var(--ink-soft);
        }
        .mobile-menu a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .mobile-menu a.active {
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 600;
        }
        .burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
            flex-shrink: 0;
        }
        .burger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: all var(--transition);
        }

        /* Mobile bottom tabs */
        .mobile-tabs {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg);
            border-top: 1px solid var(--border);
            height: var(--tab-height);
            padding-bottom: env(safe-area-inset-bottom);
            box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.04);
            justify-content: space-around;
            align-items: center;
        }
        .mobile-tabs a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 11px;
            color: var(--muted);
            font-weight: 500;
            transition: color var(--transition);
            flex: 1;
            padding: 4px 0;
            height: 100%;
            justify-content: center;
        }
        .mobile-tabs a .tab-icon {
            font-size: 18px;
            line-height: 1;
        }
        .mobile-tabs a.active {
            color: var(--primary);
            background: var(--primary-soft);
            border-radius: 8px 8px 0 0;
            font-weight: 600;
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 20px 0 0;
            background: var(--bg);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            flex-wrap: wrap;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--ink);
            font-weight: 500;
        }

        /* Page title */
        .page-title-section {
            padding: 24px 0 28px;
            background: var(--bg);
        }
        .page-title-grid {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .page-title-grid h1 {
            font-size: 32px;
            line-height: 1.3;
            color: var(--ink);
            font-weight: 700;
        }
        .page-title-grid .subtitle {
            font-size: 15px;
            color: var(--muted);
            max-width: 480px;
        }

        /* Community intro / filter bar */
        .community-intro {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .community-intro .intro-text {
            flex: 1;
            min-width: 200px;
        }
        .community-intro .intro-text h2 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .community-intro .intro-text p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .search-box input {
            width: 220px;
            height: 42px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            padding: 0 14px;
            font-size: 14px;
            background: var(--bg);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(227, 62, 62, 0.12);
            outline: none;
        }
        .search-box .search-btn {
            height: 42px;
            padding: 0 20px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: background var(--transition);
            white-space: nowrap;
        }
        .search-box .search-btn:hover {
            background: var(--primary-dark);
        }
        .tag-filter {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .tag-filter .tag-btn {
            padding: 6px 16px;
            border: 1px solid var(--primary);
            color: var(--ink);
            background: transparent;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .tag-filter .tag-btn:hover,
        .tag-filter .tag-btn.active {
            background: var(--primary);
            color: white;
        }

        /* Main content layout */
        .community-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
            align-items: start;
        }

        /* Post cards */
        .post-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .post-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            display: flex;
            gap: 0;
            transition: box-shadow var(--transition), transform var(--transition);
            cursor: pointer;
        }
        .post-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .post-card .post-thumb {
            width: 200px;
            min-height: 140px;
            flex-shrink: 0;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .post-card .post-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .post-card .post-body {
            padding: 16px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .post-card .post-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--muted);
            flex-wrap: wrap;
        }
        .post-card .post-meta .badge {
            background: var(--primary-soft);
            color: var(--primary);
            padding: 2px 10px;
            border-radius: var(--radius-badge);
            font-weight: 500;
            font-size: 12px;
        }
        .post-card .post-meta .badge.hot {
            background: var(--yellow);
            color: var(--yellow-ink);
        }
        .post-card h3 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--ink);
        }
        .post-card .post-excerpt {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card .post-stats {
            font-size: 12px;
            color: var(--muted);
            display: flex;
            gap: 16px;
            margin-top: auto;
        }
        .post-card .post-stats span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* Sidebar */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .side-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
        }
        .side-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
        }
        .topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .topic-tags a {
            padding: 5px 14px;
            background: var(--bg-alt);
            border-radius: 16px;
            font-size: 13px;
            color: var(--ink-soft);
            transition: all var(--transition);
        }
        .topic-tags a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .side-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .side-list li {
            display: flex;
            gap: 8px;
            align-items: flex-start;
        }
        .side-list li .num {
            width: 22px;
            height: 22px;
            background: var(--bg-alt);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 600;
            color: var(--muted);
            flex-shrink: 0;
        }
        .side-list li .num.top {
            background: var(--yellow);
            color: var(--yellow-ink);
        }
        .side-list li a {
            font-size: 14px;
            color: var(--ink-soft);
            transition: color var(--transition);
            line-height: 1.6;
        }
        .side-list li a:hover {
            color: var(--primary);
        }

        /* Stats card strip */
        .community-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-bottom: 32px;
        }
        .stat-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px 18px;
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .stat-card .stat-number {
            font-family: var(--font-mono);
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }
        .stat-card .stat-label {
            font-size: 13px;
            color: var(--muted);
            margin-top: 4px;
        }
        .stat-card .stat-trend {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: #2E8B57;
            margin-top: 6px;
        }

        /* Active members */
        .members-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 16px;
        }
        .member-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 18px 16px;
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .member-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .member-card .avatar {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 700;
            margin: 0 auto 10px;
        }
        .member-card .member-name {
            font-size: 14px;
            font-weight: 600;
        }
        .member-card .member-role {
            font-size: 12px;
            color: var(--muted);
            margin-top: 2px;
        }
        .member-card .member-contrib {
            display: inline-block;
            margin-top: 8px;
            padding: 3px 12px;
            background: var(--yellow);
            color: var(--yellow-ink);
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item.open {
            border-color: var(--primary);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            background: none;
            border: none;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--ink);
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--bg-alt);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.2s ease, padding 0.2s ease;
            padding: 0 20px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 16px;
        }

        /* CTA / subscribe form */
        .cta-community {
            background: var(--bg-dark);
            color: white;
            border-radius: 12px;
            padding: 40px 32px;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 24px;
            align-items: center;
            position: relative;
            overflow: hidden;
        }
        .cta-community::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: var(--primary);
            border-radius: 50%;
            opacity: 0.2;
        }
        .cta-community h2 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }
        .cta-community p {
            color: #CCCCCC;
            font-size: 14px;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }
        .subscribe-form {
            display: flex;
            gap: 8px;
            flex-shrink: 0;
            position: relative;
            z-index: 1;
        }
        .subscribe-form input {
            width: 240px;
            height: 42px;
            border: 1px solid #444;
            background: #2A2A2A;
            border-radius: var(--radius-btn);
            padding: 0 14px;
            font-size: 14px;
            color: white;
            transition: border-color var(--transition);
        }
        .subscribe-form input:focus {
            border-color: var(--yellow);
            outline: none;
        }
        .subscribe-form input::placeholder {
            color: #999;
        }
        .subscribe-form .sub-btn {
            height: 42px;
            padding: 0 24px;
            background: var(--yellow);
            color: var(--yellow-ink);
            border: none;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: background var(--transition);
            white-space: nowrap;
        }
        .subscribe-form .sub-btn:hover {
            background: #FFC107;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: #CCCCCC;
            padding: 48px 0 32px;
            margin-top: 0;
        }
        .site-footer .container {
            max-width: var(--container);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 28px;
            border-bottom: 1px solid #333;
        }
        .footer-brand .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 17px;
            color: white;
            margin-bottom: 12px;
        }
        .footer-brand .brand-mark {
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 700;
        }
        .footer-brand p {
            font-size: 13px;
            color: #AAAAAA;
            line-height: 1.7;
            max-width: 260px;
        }
        .footer-links h4 {
            font-size: 15px;
            font-weight: 600;
            color: white;
            margin-bottom: 14px;
        }
        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 13px;
            color: #AAAAAA;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--yellow);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            padding-top: 22px;
            font-size: 12px;
            color: #888;
        }
        .footer-bottom a {
            color: #AAAAAA;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--yellow);
        }
        .beian-info {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* Section title styles */
        .section-title {
            margin-bottom: 24px;
        }
        .section-title h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--ink);
        }
        .section-title p {
            font-size: 15px;
            color: var(--muted);
            margin-top: 6px;
            max-width: 560px;
        }
        .divider {
            width: 48px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
            margin-bottom: 12px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .desktop-nav {
                gap: 16px;
            }
            .desktop-nav a {
                font-size: 14px;
                padding: 18px 0;
            }
            .header-cta {
                padding: 8px 14px;
                font-size: 13px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 900px) {
            .community-layout {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: 2;
            }
            .post-list {
                order: 1;
            }
            .cta-community {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .subscribe-form {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .beian-info {
                justify-content: center;
            }
        }
        @media (max-width: 768px) {
            :root {
                --nav-height: 56px;
                --section-pad: 40px;
            }
            .desktop-nav {
                display: none;
            }
            .burger {
                display: flex;
            }
            .header-cta {
                display: none;
            }
            .mobile-tabs {
                display: flex;
            }
            body {
                padding-bottom: var(--tab-height);
            }
            .page-title-grid h1 {
                font-size: 26px;
            }
            .community-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .post-card {
                flex-direction: column;
            }
            .post-card .post-thumb {
                width: 100%;
                min-height: 160px;
            }
            .subscribe-form {
                flex-direction: column;
                align-items: stretch;
            }
            .subscribe-form input {
                width: 100%;
            }
            .search-box {
                flex-direction: column;
                width: 100%;
            }
            .search-box input {
                width: 100%;
            }
            .search-box .search-btn {
                width: 100%;
            }
            .community-intro {
                flex-direction: column;
                align-items: stretch;
            }
            .members-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-community {
                padding: 28px 20px;
            }
        }
        @media (max-width: 520px) {
            .mobile-tabs a {
                font-size: 10px;
            }
            .mobile-tabs a .tab-icon {
                font-size: 16px;
            }
            .community-stats {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card .stat-number {
                font-size: 28px;
            }
            .members-grid {
                grid-template-columns: 1fr;
            }
            .section-title h2 {
                font-size: 22px;
            }
            .faq-question {
                font-size: 14px;
                padding: 12px 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}
