/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1e40af;
            --primary-light: #3b82f6;
            --primary-dark: #1e3a8a;
            --accent: #f97316;
            --accent-light: #fb923c;
            --accent-dark: #ea580c;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-muted: #f1f5f9;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --text-white: #f8fafc;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --radius-full: 9999px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-body);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-main);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i {
            font-size: 1.8rem;
            color: var(--accent);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            color: var(--primary);
        }
        .nav-tabs-wrap {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-muted);
            padding: 4px;
            border-radius: var(--radius-full);
        }
        .nav-tabs-wrap .nav-link {
            padding: 8px 20px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-muted);
            border: none;
            background: transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-tabs-wrap .nav-link:hover {
            color: var(--primary);
            background: rgba(30, 64, 175, 0.06);
        }
        .nav-tabs-wrap .nav-link.active {
            color: #fff;
            background: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-cta .btn-accent {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 10px 24px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition);
            box-shadow: 0 4px 12px rgba(249, 115, 22, 0.35);
        }
        .nav-cta .btn-accent:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 20px rgba(249, 115, 22, 0.45);
            transform: translateY(-1px);
            color: #fff;
        }
        .nav-cta .btn-accent:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
        }
        .nav-toggle-mobile {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-main);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-xs);
            transition: background var(--transition);
        }
        .nav-toggle-mobile:hover {
            background: var(--bg-muted);
        }

        /* ===== Mobile Nav ===== */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.45);
            z-index: 1060;
            backdrop-filter: blur(4px);
        }
        .mobile-nav-overlay.show {
            display: block;
        }
        .mobile-nav-panel {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100%;
            background: #fff;
            z-index: 1070;
            padding: 24px 20px;
            box-shadow: var(--shadow-xl);
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
        }
        .mobile-nav-panel.show {
            right: 0;
        }
        .mobile-nav-panel .close-btn {
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--text-muted);
            cursor: pointer;
            float: right;
            padding: 4px;
            border-radius: var(--radius-xs);
            transition: background var(--transition);
        }
        .mobile-nav-panel .close-btn:hover {
            background: var(--bg-muted);
        }
        .mobile-nav-panel .mobile-nav-list {
            margin-top: 48px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-nav-panel .mobile-nav-list .nav-link {
            display: block;
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-main);
            transition: all var(--transition);
        }
        .mobile-nav-panel .mobile-nav-list .nav-link:hover {
            background: var(--bg-muted);
            color: var(--primary);
        }
        .mobile-nav-panel .mobile-nav-list .nav-link.active {
            background: var(--primary);
            color: #fff;
        }
        .mobile-nav-panel .mobile-cta {
            margin-top: 24px;
            display: block;
            text-align: center;
            padding: 14px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
        }
        .mobile-nav-panel .mobile-cta:hover {
            background: var(--accent-dark);
            color: #fff;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.55;
            transform: scale(1.02);
            transition: transform 6s ease;
        }
        .hero:hover .hero-bg {
            transform: scale(1);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(30, 64, 175, 0.55) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 40px 24px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(249, 115, 22, 0.2);
            border: 1px solid rgba(249, 115, 22, 0.35);
            color: var(--accent-light);
            padding: 6px 20px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: 3.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-actions .btn-primary-custom {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 16px 40px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition);
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.4);
        }
        .hero-actions .btn-primary-custom:hover {
            background: var(--accent-dark);
            box-shadow: 0 12px 32px rgba(249, 115, 22, 0.55);
            transform: translateY(-2px);
            color: #fff;
        }
        .hero-actions .btn-outline-custom {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
            padding: 16px 40px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition);
        }
        .hero-actions .btn-outline-custom:hover {
            border-color: var(--accent);
            background: rgba(249, 115, 22, 0.1);
            color: var(--accent-light);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-stats .stat-item {
            text-align: center;
        }
        .hero-stats .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stats .stat-number .accent {
            color: var(--accent);
        }
        .hero-stats .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            font-weight: 500;
        }

        /* ===== Section Spacing ===== */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-label {
            display: inline-block;
            background: rgba(30, 64, 175, 0.08);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== Feature Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: var(--radius);
            background: rgba(30, 64, 175, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
            color: var(--primary);
            transition: all var(--transition);
        }
        .feature-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== Category Entry ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            background: var(--bg-dark);
            box-shadow: var(--shadow-md);
            transition: all var(--transition);
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-xl);
        }
        .category-card .cat-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.5;
            transition: opacity 0.4s ease, transform 0.6s ease;
        }
        .category-card:hover .cat-bg {
            opacity: 0.6;
            transform: scale(1.03);
        }
        .category-card .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.85) 0%, transparent 60%);
        }
        .category-card .cat-content {
            position: relative;
            z-index: 2;
            padding: 32px 28px;
            width: 100%;
        }
        .category-card .cat-content h3 {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
        }
        .category-card .cat-content p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 16px;
            max-width: 360px;
        }
        .category-card .cat-content .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-light);
            font-weight: 700;
            font-size: 0.95rem;
            transition: gap var(--transition);
        }
        .category-card .cat-content .cat-link:hover {
            gap: 14px;
            color: var(--accent);
        }

        /* ===== News / CMS List ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .news-card .news-img {
            height: 200px;
            background: var(--bg-muted);
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .news-card .news-img .cat-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 600;
        }
        .news-card .news-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .news-body .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .news-card .news-body .news-meta i {
            margin-right: 4px;
        }
        .news-card .news-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .news-card .news-body h3 a {
            color: var(--text-main);
            transition: color var(--transition);
        }
        .news-card .news-body h3 a:hover {
            color: var(--primary);
        }
        .news-card .news-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
        }
        .news-card .news-body .read-more {
            margin-top: 16px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }
        .news-card .news-body .read-more:hover {
            gap: 12px;
            color: var(--primary-light);
        }

        /* ===== Stats / Data ===== */
        .stats-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            z-index: 1;
        }
        .stats-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition);
        }
        .stats-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(249, 115, 22, 0.3);
        }
        .stats-item .stat-icon {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .stats-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stats-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.55);
            font-weight: 500;
            margin-top: 4px;
        }

        /* ===== Flow / Steps ===== */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            counter-reset: step;
        }
        .flow-step {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            position: relative;
            transition: all var(--transition);
        }
        .flow-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .flow-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            margin: 0 auto 16px;
            transition: all var(--transition);
        }
        .flow-step:hover .step-num {
            background: var(--accent);
            transform: scale(1.05);
        }
        .flow-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .flow-step p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item .faq-question {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 1.02rem;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-item .faq-question:hover {
            background: var(--bg-muted);
        }
        .faq-item .faq-question i {
            transition: transform var(--transition);
            color: var(--text-muted);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 60px 24px;
        }
        .cta-content h2 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-content .btn-cta {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 18px 48px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1.1rem;
            transition: all var(--transition);
            box-shadow: 0 8px 28px rgba(249, 115, 22, 0.45);
        }
        .cta-content .btn-cta:hover {
            background: var(--accent-dark);
            box-shadow: 0 12px 36px rgba(249, 115, 22, 0.6);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, #fff, #94a3b8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a:hover {
            color: var(--accent-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.8rem;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }
            .nav-tabs-wrap {
                display: none;
            }
            .nav-cta .btn-accent {
                display: none;
            }
            .nav-toggle-mobile {
                display: block;
            }
            .hero {
                min-height: 70vh;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .hero-stats .stat-number {
                font-size: 1.8rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-card {
                min-height: 240px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stats-item .stat-number {
                font-size: 2rem;
            }
            .flow-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                text-align: center;
            }
            .footer-brand p {
                margin: 0 auto;
            }
            .cta-content h2 {
                font-size: 1.8rem;
            }
            .cta-content .btn-cta {
                padding: 14px 36px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn-primary-custom,
            .hero-actions .btn-outline-custom {
                width: 100%;
                max-width: 300px;
                text-align: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .flow-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stats-item {
                padding: 20px 12px;
            }
            .stats-item .stat-number {
                font-size: 1.6rem;
            }
            .container {
                padding: 0 16px;
            }
            .faq-item .faq-question {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.9rem;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        .nav-link:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: var(--radius-xs);
        }

        /* ===== Bootstrap Overrides ===== */
        .btn-check:focus+.btn,
        .btn:focus {
            box-shadow: none;
        }
        .form-control:focus {
            box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.15);
            border-color: var(--primary-light);
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f1c0c4;
            --primary-gradient: linear-gradient(135deg, #e63946 0%, #c1121f 100%);
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-dark: #1d3557;
            --bg-white: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8e8ea0;
            --text-light: #f8f9fa;
            --border-color: #e8e8ef;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
            --shadow-hover: 0 16px 48px rgba(230,57,70,0.18);
            --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-pad: 1.5rem;
        }

        /* ===== 基础重置 ===== */
        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-light);
            line-height: 1.7;
            font-size: 1rem;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); text-decoration: none; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; margin-top: 0; color: var(--text-primary); }
        p { margin-top: 0; margin-bottom: 1rem; color: var(--text-secondary); }
        ul, ol { padding-left: 1.25rem; }
        figure { margin: 0; }
        iframe { max-width: 100%; border: 0; border-radius: var(--radius-sm); }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 var(--container-pad); }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            padding: 0.75rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: var(--shadow-sm);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
            gap: 1rem;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo i { font-size: 1.6rem; color: var(--primary); }
        .logo span { background: var(--primary-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .logo:hover { opacity: 0.9; color: var(--primary); }

        .nav-tabs-wrap {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0.25rem 0;
            flex: 1;
            justify-content: center;
        }
        .nav-tabs-wrap::-webkit-scrollbar { display: none; }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.25rem;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-link i { font-size: 0.85rem; }
        .nav-link:hover { color: var(--primary); background: var(--primary-light); border-color: transparent; }
        .nav-link.active { color: #fff; background: var(--primary-gradient); border-color: transparent; box-shadow: 0 4px 16px rgba(230,57,70,0.3); }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.55rem 1.5rem;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            background: var(--secondary);
            border: none;
            transition: var(--transition);
            white-space: nowrap;
            text-decoration: none;
            flex-shrink: 0;
        }
        .header-cta:hover { background: #15263b; color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }

        /* ===== 文章页 ===== */
        .article-banner {
            position: relative;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 4rem 0 3rem;
            text-align: center;
            color: #fff;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(29,53,87,0.7);
            backdrop-filter: blur(2px);
        }
        .article-banner .container { position: relative; z-index: 1; }
        .article-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            max-width: 900px;
            margin: 0 auto 1rem;
            line-height: 1.3;
        }
        .article-banner .meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
            font-size: 0.95rem;
            color: rgba(255,255,255,0.85);
        }
        .article-banner .meta i { margin-right: 0.35rem; }
        .article-banner .meta .badge-cat {
            display: inline-block;
            background: var(--primary);
            padding: 0.25rem 1rem;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            color: #fff;
        }

        .article-main {
            padding: 3rem 0;
        }
        .article-content-wrap {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 2.5rem 3rem;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-primary);
        }
        .article-body p { margin-bottom: 1.25rem; color: var(--text-secondary); }
        .article-body h2, .article-body h3, .article-body h4 { margin-top: 2rem; margin-bottom: 1rem; color: var(--text-primary); }
        .article-body ul, .article-body ol { margin-bottom: 1.25rem; color: var(--text-secondary); }
        .article-body img { border-radius: var(--radius-sm); margin: 1.5rem 0; box-shadow: var(--shadow-sm); }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-light);
            padding: 1.25rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body a { color: var(--primary); text-decoration: underline; }
        .article-body a:hover { color: var(--primary-dark); }

        .article-footer-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
        }
        .article-tags {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .article-tags .tag {
            display: inline-block;
            padding: 0.3rem 1rem;
            border-radius: 100px;
            background: var(--bg-light);
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
        .article-share {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2.25rem;
            height: 2.25rem;
            border-radius: 50%;
            background: var(--bg-light);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .article-share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

        /* ===== 侧边栏 / 推荐 ===== */
        .sidebar-section {
            padding: 3rem 0;
            background: var(--bg-light);
        }
        .sidebar-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            text-align: center;
        }
        .sidebar-section h2 span { color: var(--primary); }

        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
        }
        .rec-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 1.5rem;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }
        .rec-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--primary-light); }
        .rec-card .cat-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 0.2rem 0.8rem;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
            align-self: flex-start;
        }
        .rec-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; }
        .rec-card h3 a { color: var(--text-primary); }
        .rec-card h3 a:hover { color: var(--primary); }
        .rec-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0.75rem; flex: 1; }
        .rec-card .rec-meta { font-size: 0.8rem; color: var(--text-muted); display: flex; align-items: center; gap: 1rem; }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 3.5rem 0;
            background: var(--bg-white);
        }
        .faq-section h2 {
            text-align: center;
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 2rem;
        }
        .faq-section h2 span { color: var(--primary); }
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 1.25rem 1.5rem;
            background: var(--bg-light);
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            color: var(--text-primary);
        }
        .faq-item h4 i { color: var(--primary); font-size: 0.9rem; }
        .faq-item p { margin-bottom: 0; font-size: 0.95rem; color: var(--text-secondary); padding-left: 1.65rem; }

        /* ===== CTA ===== */
        .cta-section {
            padding: 4rem 0;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(29,53,87,0.8);
        }
        .cta-section .container { position: relative; z-index: 1; text-align: center; }
        .cta-section h2 { color: #fff; font-size: 2rem; font-weight: 800; margin-bottom: 1rem; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 1.1rem; max-width: 600px; margin: 0 auto 1.5rem; }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.85rem 2.5rem;
            border-radius: 100px;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            background: #fff;
            border: none;
            transition: var(--transition);
            text-decoration: none;
        }
        .cta-btn:hover { background: var(--primary-light); color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 40px rgba(0,0,0,0.2); }
        .cta-btn i { font-size: 1rem; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 3rem 0 1.5rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .site-footer .logo { color: #fff; margin-bottom: 0.75rem; }
        .site-footer .logo span { -webkit-text-fill-color: #fff; color: #fff; }
        .site-footer .logo i { color: var(--primary); }
        .site-footer .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.6); max-width: 360px; }
        .site-footer h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 1rem; }
        .site-footer ul { list-style: none; padding: 0; margin: 0; }
        .site-footer ul li { margin-bottom: 0.5rem; }
        .site-footer ul a { color: rgba(255,255,255,0.65); font-size: 0.9rem; transition: var(--transition); }
        .site-footer ul a:hover { color: var(--primary); padding-left: 4px; }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 1.25rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }
        .site-footer .footer-bottom p { margin-bottom: 0; color: rgba(255,255,255,0.5); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-content-wrap { padding: 2rem; }
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .site-header .container { flex-wrap: wrap; }
            .nav-tabs-wrap { order: 3; width: 100%; justify-content: flex-start; padding: 0.5rem 0 0; }
            .header-cta { display: none; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-banner { padding: 2.5rem 0 2rem; }
            .article-content-wrap { padding: 1.5rem; border-radius: var(--radius-sm); }
            .article-body { font-size: 1rem; }
            .article-footer-meta { flex-direction: column; align-items: flex-start; }
            .recommend-grid { grid-template-columns: 1fr; }
            .faq-section h2 { font-size: 1.4rem; }
            .cta-section h2 { font-size: 1.5rem; }
            .cta-section p { font-size: 0.95rem; }
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .sidebar-section h2 { font-size: 1.3rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 1rem; }
            .article-banner h1 { font-size: 1.3rem; }
            .article-banner .meta { gap: 0.75rem; font-size: 0.8rem; flex-direction: column; }
            .article-content-wrap { padding: 1rem; }
            .nav-link { padding: 0.4rem 0.9rem; font-size: 0.8rem; }
            .logo { font-size: 1.2rem; }
            .logo i { font-size: 1.3rem; }
            .faq-item { padding: 1rem; }
            .faq-item h4 { font-size: 0.95rem; }
            .cta-section { padding: 2.5rem 0; }
            .cta-btn { padding: 0.7rem 1.5rem; font-size: 0.9rem; }
            .site-footer { padding: 2rem 0 1rem; }
        }

        /* ===== 内容未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 4rem 2rem;
        }
        .not-found-box i { font-size: 4rem; color: var(--primary-light); margin-bottom: 1.5rem; }
        .not-found-box h2 { font-size: 1.6rem; font-weight: 700; margin-bottom: 0.75rem; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 1.5rem; }
        .not-found-box .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 2rem;
            border-radius: 100px;
            background: var(--primary-gradient);
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-home:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); color: #fff; }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            padding: 1rem 0 0;
            background: transparent;
        }
        .breadcrumb-wrap nav { font-size: 0.85rem; color: var(--text-muted); }
        .breadcrumb-wrap nav a { color: var(--text-secondary); }
        .breadcrumb-wrap nav a:hover { color: var(--primary); }
        .breadcrumb-wrap nav span { color: var(--text-muted); }
        .breadcrumb-wrap nav .current { color: var(--primary); font-weight: 600; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-dark: #1a1a2e;
            --text-dark: #1d1d1f;
            --text-muted: #6c757d;
            --text-light: #f1f1f1;
            --border-color: #e9ecef;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1.25rem;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.1);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            color: var(--text-dark);
            background: #fff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.25rem; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--secondary); }
        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; margin-bottom: 1rem; }
        h3 { font-size: 1.35rem; }
        p { margin-bottom: 1rem; color: var(--text-muted); }
        .section-title { text-align: center; margin-bottom: 2.5rem; position: relative; }
        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0.75rem auto 0;
        }
        .section-padding { padding: 5rem 0; }
        .bg-light { background: var(--bg-light); }
        .bg-dark { background: var(--bg-dark); color: var(--text-light); }
        .bg-dark h2, .bg-dark h3, .bg-dark .section-title { color: #fff; }
        .bg-dark p { color: rgba(255,255,255,0.8); }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.65rem 1.75rem;
            font-weight: 600;
            border-radius: var(--radius-md);
            border: none;
            transition: var(--transition);
            cursor: pointer;
            font-size: 0.95rem;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(230, 57, 70, 0.35);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-lg { padding: 0.85rem 2.5rem; font-size: 1.05rem; border-radius: var(--radius-lg); }
        .btn-sm { padding: 0.4rem 1rem; font-size: 0.85rem; border-radius: var(--radius-sm); }

        /* ===== Badge / Tag ===== */
        .badge-tag {
            display: inline-block;
            padding: 0.25rem 0.85rem;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--bg-light);
            color: var(--secondary);
            border-radius: 100px;
            transition: var(--transition);
        }
        .badge-tag:hover { background: var(--primary); color: #fff; }
        .badge-hot {
            background: var(--primary);
            color: #fff;
            padding: 0.2rem 0.7rem;
            border-radius: 100px;
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        /* ===== Navigation (分段标签导航) ===== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 0;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 1.5rem;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--secondary);
            white-space: nowrap;
        }
        .logo i { color: var(--primary); font-size: 1.6rem; }
        .logo:hover { color: var(--secondary); }
        .logo span { background: linear-gradient(135deg, var(--secondary), var(--primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

        .nav-tabs-wrap {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            background: var(--bg-light);
            padding: 0.25rem;
            border-radius: 60px;
        }
        .nav-tabs-wrap .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.35rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-muted);
            border-radius: 60px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-tabs-wrap .nav-link:hover {
            color: var(--secondary);
            background: rgba(230,57,70,0.06);
        }
        .nav-tabs-wrap .nav-link.active {
            background: #fff;
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .header-cta {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .header-cta .btn { border-radius: 60px; padding: 0.5rem 1.5rem; font-size: 0.9rem; }

        /* Mobile toggle */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--secondary);
            cursor: pointer;
            padding: 0.25rem;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: #fff;
            border-top: 1px solid var(--border-color);
            padding: 1rem 1.25rem;
            gap: 0.5rem;
            box-shadow: var(--shadow-md);
        }
        .mobile-nav .nav-link {
            padding: 0.6rem 1rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            color: var(--text-muted);
        }
        .mobile-nav .nav-link.active { color: var(--primary); background: var(--bg-light); }
        .mobile-nav.show { display: flex; }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            padding: 5rem 0 4rem;
            background: linear-gradient(135deg, var(--secondary) 0%, #16213e 100%);
            overflow: hidden;
            min-height: 340px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .category-hero .container { position: relative; z-index: 2; }
        .category-hero h1 { color: #fff; font-size: 2.8rem; margin-bottom: 0.75rem; }
        .category-hero h1 i { color: var(--primary); }
        .category-hero p { color: rgba(255,255,255,0.85); font-size: 1.15rem; max-width: 680px; margin-bottom: 1.5rem; }
        .hero-tags { display: flex; flex-wrap: wrap; gap: 0.6rem; }
        .hero-tags .badge-tag { background: rgba(255,255,255,0.15); color: #fff; }
        .hero-tags .badge-tag:hover { background: var(--primary); }

        /* ===== Cards ===== */
        .card-event {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-event:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .card-event .card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .card-event .card-img .badge-hot { position: absolute; top: 1rem; left: 1rem; }
        .card-event .card-img .event-date {
            position: absolute;
            bottom: 0;
            right: 0;
            background: var(--secondary);
            color: #fff;
            padding: 0.35rem 0.9rem;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: var(--radius-sm) 0 0 0;
        }
        .card-event .card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
        .card-event .card-body h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
        .card-event .card-body p { font-size: 0.9rem; flex: 1; }
        .card-event .card-footer {
            padding: 1rem 1.5rem;
            border-top: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--bg-light);
        }
        .card-event .card-footer .meta { font-size: 0.85rem; color: var(--text-muted); }
        .card-event .card-footer .meta i { margin-right: 0.3rem; }

        /* ===== Featured Block ===== */
        .featured-event {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            display: flex;
            flex-wrap: wrap;
        }
        .featured-event .feat-img {
            flex: 1 1 45%;
            min-height: 300px;
            background-size: cover;
            background-position: center;
        }
        .featured-event .feat-content {
            flex: 1 1 55%;
            padding: 2.5rem 2.5rem 2rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-event .feat-content .tag { color: var(--primary); font-weight: 700; font-size: 0.9rem; letter-spacing: 1px; }
        .featured-event .feat-content h2 { font-size: 1.8rem; margin: 0.5rem 0 0.75rem; }
        .featured-event .feat-content p { font-size: 1rem; }

        /* ===== Timeline / Schedule ===== */
        .timeline { position: relative; padding-left: 2rem; }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0.5rem;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(to bottom, var(--primary), var(--secondary-light));
            border-radius: 4px;
        }
        .timeline-item {
            position: relative;
            padding-bottom: 2rem;
            padding-left: 1.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -1.75rem;
            top: 0.3rem;
            width: 14px;
            height: 14px;
            background: var(--primary);
            border-radius: 50%;
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px var(--primary);
        }
        .timeline-item .tl-date { font-size: 0.85rem; font-weight: 700; color: var(--primary); }
        .timeline-item h4 { font-size: 1.1rem; margin: 0.2rem 0 0.3rem; }
        .timeline-item p { font-size: 0.9rem; margin: 0; }

        /* ===== Stats / Numbers ===== */
        .stat-grid { display: flex; flex-wrap: wrap; gap: 2rem; justify-content: center; text-align: center; }
        .stat-item { flex: 1 1 160px; }
        .stat-item .num { font-size: 2.8rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
        .stat-item .label { font-size: 0.95rem; color: var(--text-muted); margin-top: 0.25rem; }

        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            padding: 1.1rem 1.5rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #fff;
            transition: var(--transition);
        }
        .faq-question:hover { background: var(--bg-light); }
        .faq-question i { color: var(--primary); transition: var(--transition); }
        .faq-answer {
            padding: 0 1.5rem 1.1rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #16213e 100%);
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { color: #fff; font-size: 2rem; margin-bottom: 0.75rem; }
        .cta-section p { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 600px; margin: 0 auto 1.5rem; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary);
            color: rgba(255,255,255,0.8);
            padding: 3.5rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand .logo { color: #fff; font-size: 1.4rem; margin-bottom: 0.75rem; }
        .footer-brand .logo i { color: var(--primary); }
        .footer-brand .logo span { -webkit-text-fill-color: #fff; background: none; }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.65); max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 1rem; font-weight: 700; }
        .footer-col ul { list-style: none; padding: 0; }
        .footer-col ul li { margin-bottom: 0.5rem; }
        .footer-col ul li a { color: rgba(255,255,255,0.7); font-size: 0.9rem; }
        .footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 1.5rem 0;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom p { margin: 0; color: rgba(255,255,255,0.5); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .featured-event .feat-img { flex: 1 1 100%; min-height: 220px; }
            .featured-event .feat-content { flex: 1 1 100%; padding: 1.75rem; }
        }
        @media (max-width: 768px) {
            .header-inner { height: 60px; }
            .nav-tabs-wrap { display: none; }
            .header-cta .btn { display: none; }
            .mobile-toggle { display: block; }
            .category-hero h1 { font-size: 2rem; }
            .category-hero { padding: 3rem 0 2.5rem; min-height: 240px; }
            .section-padding { padding: 3rem 0; }
            h2 { font-size: 1.6rem; }
            .cta-section { padding: 2.5rem 1.5rem; }
            .cta-section h2 { font-size: 1.5rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .stat-grid { gap: 1.5rem; }
            .stat-item .num { font-size: 2.2rem; }
            .timeline { padding-left: 1.5rem; }
        }
        @media (max-width: 520px) {
            .header-inner { height: 56px; gap: 0.75rem; }
            .logo { font-size: 1.2rem; }
            .logo i { font-size: 1.3rem; }
            .category-hero h1 { font-size: 1.6rem; }
            .category-hero p { font-size: 1rem; }
            .card-event .card-img { height: 160px; }
            .featured-event .feat-content { padding: 1.25rem; }
            .featured-event .feat-content h2 { font-size: 1.3rem; }
            .cta-section { padding: 2rem 1.25rem; }
            .cta-section h2 { font-size: 1.3rem; }
        }

        /* ===== Utility ===== */
        .gap-1 { gap: 0.5rem; }
        .gap-2 { gap: 1rem; }
        .gap-3 { gap: 1.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .mt-2 { margin-top: 1rem; }
        .text-primary { color: var(--primary) !important; }
        .fw-700 { font-weight: 700; }
        .fs-small { font-size: 0.88rem; }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f8d7da;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --text-dark: #1a1a2e;
            --text-body: #2d3436;
            --text-muted: #636e72;
            --text-light: #dfe6e9;
            --border-color: #e9ecef;
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --border-radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-dark);
        }
        p {
            margin-bottom: 0;
        }

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

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-height);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 28px;
            transition: var(--transition);
        }
        .logo:hover i {
            transform: scale(1.1) rotate(-8deg);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-tabs-wrap {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-light);
            padding: 4px;
            border-radius: 50px;
            border: 1px solid var(--border-color);
            flex-wrap: wrap;
        }
        .nav-tabs-wrap .nav-link {
            padding: 10px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-muted);
            background: transparent;
            border: none;
            transition: var(--transition);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-tabs-wrap .nav-link i {
            font-size: 15px;
        }
        .nav-tabs-wrap .nav-link:hover {
            color: var(--text-dark);
            background: rgba(230, 57, 70, 0.08);
        }
        .nav-tabs-wrap .nav-link.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.35);
        }
        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-cta .btn-search {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid var(--border-color);
            background: var(--bg-white);
            color: var(--text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            cursor: pointer;
        }
        .header-cta .btn-search:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .header-cta .btn-primary {
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            background: var(--secondary);
            border: none;
            color: #fff;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .header-cta .btn-primary:hover {
            background: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.30);
        }
        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background: var(--bg-white);
            color: var(--text-dark);
            font-size: 20px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== Banner / Hero ===== */
        .page-banner {
            padding-top: calc(var(--header-height) + 40px);
            padding-bottom: 60px;
            background: linear-gradient(135deg, var(--secondary) 0%, #16213e 100%);
            position: relative;
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.85), rgba(22, 33, 62, 0.70));
            z-index: 1;
        }
        .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 780px;
            margin: 0 auto;
        }
        .banner-content .badge {
            display: inline-block;
            padding: 8px 20px;
            border-radius: 50px;
            background: rgba(230, 57, 70, 0.20);
            color: var(--accent);
            font-weight: 600;
            font-size: 14px;
            border: 1px solid rgba(244, 162, 97, 0.30);
            margin-bottom: 16px;
            backdrop-filter: blur(4px);
        }
        .banner-content h1 {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .banner-content h1 span {
            color: var(--accent);
        }
        .banner-content p {
            font-size: 18px;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto 24px;
            opacity: 0.9;
        }
        .banner-content .btn-group-custom {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .banner-content .btn-primary-custom {
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 16px;
            background: var(--primary);
            border: none;
            color: #fff;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .banner-content .btn-primary-custom:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(230, 57, 70, 0.40);
        }
        .banner-content .btn-outline-custom {
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 16px;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.30);
            color: #fff;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .banner-content .btn-outline-custom:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-3px);
        }

        /* ===== Section Shared ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title .sub-label {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 50px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-title h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .section-title h2 span {
            color: var(--primary);
        }
        .section-title p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== Community Intro ===== */
        .community-intro {
            background: var(--bg-white);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--border-radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: var(--transition);
        }
        .intro-image:hover img {
            transform: scale(1.03);
        }
        .intro-text h3 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-dark);
        }
        .intro-text h3 span {
            color: var(--primary);
        }
        .intro-text p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 20px;
        }
        .intro-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            background: var(--bg-light);
            border-radius: var(--border-radius-sm);
            font-weight: 500;
            font-size: 15px;
            color: var(--text-dark);
            transition: var(--transition);
        }
        .intro-features li i {
            color: var(--primary);
            font-size: 18px;
        }
        .intro-features li:hover {
            background: var(--primary-light);
            transform: translateX(4px);
        }

        /* ===== Community Cards ===== */
        .community-cards-section {
            background: var(--bg-light);
        }
        .community-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .community-card {
            background: var(--bg-white);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .community-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .community-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .community-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .community-card:hover .card-img img {
            transform: scale(1.06);
        }
        .community-card .card-img .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 5px 14px;
            border-radius: 50px;
            background: rgba(230, 57, 70, 0.90);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }
        .community-card .card-body {
            padding: 24px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .community-card .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .community-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .community-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
        }
        .community-card .card-meta .stats {
            display: flex;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .community-card .card-meta .stats i {
            margin-right: 4px;
            color: var(--primary);
        }
        .community-card .card-meta .btn-join {
            padding: 6px 18px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 13px;
            background: var(--secondary);
            color: #fff;
            border: none;
            transition: var(--transition);
            cursor: pointer;
        }
        .community-card .card-meta .btn-join:hover {
            background: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.30);
        }

        /* ===== Hot Topics ===== */
        .hot-topics-section {
            background: var(--bg-white);
        }
        .topics-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .topic-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 22px 24px;
            background: var(--bg-light);
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .topic-item:hover {
            background: var(--bg-white);
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }
        .topic-item .topic-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
        }
        .topic-item .topic-info h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-dark);
        }
        .topic-item .topic-info p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .topic-item .topic-info .topic-meta {
            display: flex;
            gap: 16px;
            margin-top: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .topic-item .topic-info .topic-meta i {
            color: var(--accent);
            margin-right: 4px;
        }

        /* ===== Community Stats ===== */
        .community-stats {
            background: linear-gradient(135deg, var(--secondary) 0%, #16213e 100%);
            position: relative;
            overflow: hidden;
        }
        .community-stats::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .stats-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }
        .stats-item {
            padding: 30px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--border-radius);
            border: 1px solid rgba(255, 255, 255, 0.10);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .stats-item:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
        }
        .stats-item .number {
            font-size: 44px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stats-item .number span {
            font-size: 24px;
            color: rgba(255, 255, 255, 0.6);
        }
        .stats-item .label {
            font-size: 15px;
            color: var(--text-light);
            margin-top: 8px;
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-light);
        }
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--border-radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 18px;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item summary:hover {
            background: var(--bg-light);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.06;
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-content p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
        }
        .cta-content .btn-cta {
            padding: 16px 44px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 17px;
            background: #fff;
            color: var(--primary);
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-content .btn-cta:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.20);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 22px;
            margin-bottom: 14px;
        }
        .footer-brand .logo i {
            color: var(--accent);
        }
        .footer-brand .logo span {
            -webkit-text-fill-color: #fff;
            background: none;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin-top: 12px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Back to Top ===== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            border: none;
            font-size: 20px;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .back-to-top.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .back-to-top:hover {
            background: var(--secondary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .community-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-grid {
                gap: 30px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .mobile-toggle {
                display: flex;
            }
            .nav-tabs-wrap {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                border-radius: 0;
                border: none;
                border-bottom: 1px solid var(--border-color);
                padding: 12px 16px;
                flex-direction: column;
                gap: 6px;
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-tabs-wrap.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-tabs-wrap .nav-link {
                width: 100%;
                justify-content: center;
                padding: 12px 16px;
                border-radius: 8px;
            }
            .header-cta .btn-primary span {
                display: none;
            }
            .page-banner {
                min-height: 300px;
                padding-top: calc(var(--header-height) + 24px);
                padding-bottom: 40px;
            }
            .banner-content h1 {
                font-size: 30px;
            }
            .banner-content p {
                font-size: 16px;
            }
            .section-padding {
                padding: 50px 0;
            }
            .section-title h2 {
                font-size: 28px;
            }
            .intro-grid {
                grid-template-columns: 1fr;
            }
            .intro-image img {
                height: 240px;
            }
            .intro-features {
                grid-template-columns: 1fr;
            }
            .community-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .topics-list {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stats-item .number {
                font-size: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-content h2 {
                font-size: 28px;
            }
            .banner-content .btn-group-custom {
                flex-direction: column;
                align-items: center;
            }
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 17px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .banner-content h1 {
                font-size: 24px;
            }
            .banner-content p {
                font-size: 14px;
            }
            .section-title h2 {
                font-size: 22px;
            }
            .community-card .card-img {
                height: 160px;
            }
            .topic-item {
                padding: 16px 18px;
                flex-direction: column;
            }
            .topic-item .topic-icon {
                width: 40px;
                height: 40px;
                font-size: 18px;
            }
            .stats-item {
                padding: 20px 12px;
            }
            .stats-item .number {
                font-size: 28px;
            }
            .faq-item summary {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 14px;
            }
            .cta-content h2 {
                font-size: 24px;
            }
            .cta-content .btn-cta {
                padding: 14px 28px;
                font-size: 15px;
            }
        }