/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #00d4ff;
            --clr-primary-dark: #009dbf;
            --clr-primary-light: #66e5ff;
            --clr-accent: #f59e0b;
            --clr-accent-light: #fbbf24;
            --clr-accent-dark: #d97706;
            --clr-purple: #7c3aed;
            --clr-purple-light: #a78bfa;
            --clr-bg: #0b0f2a;
            --clr-bg-alt: #111639;
            --clr-bg-card: rgba(255, 255, 255, 0.04);
            --clr-bg-card-hover: rgba(255, 255, 255, 0.08);
            --clr-surface: #1a1f42;
            --clr-surface-light: #23285a;
            --clr-text: #f0f4ff;
            --clr-text-secondary: #94a3b8;
            --clr-text-muted: #64748b;
            --clr-border: rgba(255, 255, 255, 0.08);
            --clr-border-hover: rgba(255, 255, 255, 0.18);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.15);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础重置 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: var(--font-sans);
            background: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-narrow {
            max-width: 880px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 头部 & 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(11, 15, 42, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--clr-border);
            transition: background var(--transition), border-color var(--transition);
        }

        .site-header.scrolled {
            background: rgba(11, 15, 42, 0.96);
            border-bottom-color: rgba(0, 212, 255, 0.15);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--clr-text);
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .site-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            font-weight: 800;
            flex-shrink: 0;
        }
        .site-logo .logo-text {
            background: linear-gradient(90deg, var(--clr-text), var(--clr-primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* 导航分段标签 */
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.05);
            padding: 4px;
            border-radius: 50px;
            border: 1px solid var(--clr-border);
        }
        .nav-tabs .nav-tab {
            padding: 8px 22px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--clr-text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-tabs .nav-tab:hover {
            color: var(--clr-text);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-tabs .nav-tab.active {
            color: #fff;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-purple));
            box-shadow: 0 4px 16px rgba(0, 212, 255, 0.25);
        }
        .nav-tabs .nav-tab.active:hover {
            box-shadow: 0 6px 24px rgba(0, 212, 255, 0.35);
        }
        .nav-tabs .nav-tab:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 2px;
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-cta .btn-header {
            padding: 8px 24px;
            border-radius: 50px;
            font-size: 0.875rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-dark));
            color: #1a1a2e;
            transition: all var(--transition);
            border: none;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
        }
        .header-cta .btn-header:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.4);
        }
        .header-cta .btn-header:active {
            transform: translateY(0);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--clr-border);
            color: var(--clr-text);
            font-size: 1.4rem;
            transition: all var(--transition);
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* 移动端导航抽屉 */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 998;
            backdrop-filter: blur(4px);
            opacity: 0;
            transition: opacity 0.3s;
            pointer-events: none;
        }
        .mobile-nav-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-nav-drawer {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            max-width: 85vw;
            height: 100%;
            background: var(--clr-bg-alt);
            border-left: 1px solid var(--clr-border);
            z-index: 999;
            padding: 24px 28px;
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .mobile-nav-drawer.open {
            right: 0;
        }
        .mobile-nav-drawer .close-btn {
            align-self: flex-end;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--clr-border);
            color: var(--clr-text);
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
        }
        .mobile-nav-drawer .close-btn:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .mobile-nav-drawer .mobile-nav-item {
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 500;
            color: var(--clr-text-secondary);
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .mobile-nav-drawer .mobile-nav-item:hover {
            background: rgba(255, 255, 255, 0.05);
            color: var(--clr-text);
        }
        .mobile-nav-drawer .mobile-nav-item.active {
            background: rgba(0, 212, 255, 0.1);
            border-color: rgba(0, 212, 255, 0.2);
            color: var(--clr-primary);
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg,
                    rgba(11, 15, 42, 0.92) 0%,
                    rgba(11, 15, 42, 0.70) 50%,
                    rgba(11, 15, 42, 0.92) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 212, 255, 0.08) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 50%, rgba(124, 58, 237, 0.06) 0%, transparent 70%);
            z-index: 2;
            pointer-events: none;
        }
        .hero .hero-content {
            position: relative;
            z-index: 3;
            text-align: center;
            max-width: 860px;
            margin: 0 auto;
        }
        .hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.12);
            border: 1px solid rgba(0, 212, 255, 0.2);
            color: var(--clr-primary-light);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 24px;
            letter-spacing: 0.3px;
        }
        .hero .hero-badge i {
            font-size: 0.75rem;
        }
        .hero h1 {
            font-size: clamp(2.4rem, 6.5vw, 4.2rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-purple-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero .hero-sub {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: var(--clr-text-secondary);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero .hero-actions .btn-primary {
            padding: 14px 38px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-purple));
            color: #fff;
            border: none;
            box-shadow: 0 8px 32px rgba(0, 212, 255, 0.3);
            transition: all var(--transition);
        }
        .hero .hero-actions .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 212, 255, 0.45);
        }
        .hero .hero-actions .btn-primary:active {
            transform: translateY(-1px);
        }
        .hero .hero-actions .btn-secondary {
            padding: 14px 38px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.06);
            color: var(--clr-text);
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
        }
        .hero .hero-actions .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--clr-border-hover);
            transform: translateY(-3px);
        }
        .hero .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 56px;
            flex-wrap: wrap;
        }
        .hero .hero-stats .stat-item {
            text-align: center;
        }
        .hero .hero-stats .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--clr-text);
            line-height: 1.2;
        }
        .hero .hero-stats .stat-number .num-highlight {
            color: var(--clr-primary);
        }
        .hero .hero-stats .stat-label {
            font-size: 0.85rem;
            color: var(--clr-text-muted);
            margin-top: 4px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--clr-bg-alt);
        }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 16px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid rgba(0, 212, 255, 0.12);
            color: var(--clr-primary);
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--clr-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.05rem;
        }

        /* ===== 核心优势 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--clr-primary), var(--clr-purple));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .feature-card:hover {
            background: var(--clr-bg-card-hover);
            border-color: var(--clr-border-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(124, 58, 237, 0.12));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--clr-primary);
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .feature-card p {
            color: var(--clr-text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== 分类入口 ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
            background: var(--clr-bg-alt);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--clr-border-hover);
        }
        .category-card .cat-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            transition: transform 0.5s;
        }
        .category-card:hover .cat-bg {
            transform: scale(1.05);
        }
        .category-card .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(11, 15, 42, 0.92) 0%, rgba(11, 15, 42, 0.3) 70%, rgba(11, 15, 42, 0.1) 100%);
            z-index: 1;
        }
        .category-card .cat-content {
            position: relative;
            z-index: 2;
            padding: 32px 28px;
            width: 100%;
        }
        .category-card .cat-content .cat-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.15);
            border: 1px solid rgba(0, 212, 255, 0.2);
            color: var(--clr-primary-light);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
        }
        .category-card .cat-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .category-card .cat-content p {
            color: var(--clr-text-secondary);
            font-size: 0.92rem;
            margin-bottom: 14px;
        }
        .category-card .cat-content .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--clr-primary);
            font-weight: 500;
            font-size: 0.9rem;
            transition: gap var(--transition);
        }
        .category-card .cat-content .cat-link:hover {
            gap: 14px;
        }

        /* ===== 最新资讯 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
        }
        .news-item:hover {
            background: var(--clr-bg-card-hover);
            border-color: var(--clr-border-hover);
            transform: translateX(4px);
        }
        .news-item .news-num {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid rgba(0, 212, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--clr-primary);
        }
        .news-item .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-item .news-body .news-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--clr-text-muted);
            margin-bottom: 4px;
        }
        .news-item .news-body .news-meta .news-cat {
            color: var(--clr-accent);
            font-weight: 500;
        }
        .news-item .news-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .news-item .news-body h4 a {
            color: var(--clr-text);
            transition: color var(--transition);
        }
        .news-item .news-body h4 a:hover {
            color: var(--clr-primary);
        }
        .news-item .news-body .news-excerpt {
            font-size: 0.9rem;
            color: var(--clr-text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--clr-text-muted);
            font-size: 1rem;
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--clr-border);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 36px 20px;
            border-radius: var(--radius-lg);
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
        }
        .stat-card:hover {
            background: var(--clr-bg-card-hover);
            border-color: var(--clr-border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--clr-primary);
            margin-bottom: 12px;
        }
        .stat-card .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(135deg, var(--clr-text), var(--clr-primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--clr-text-secondary);
            margin-top: 6px;
        }

        /* ===== 采编流程 ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: linear-gradient(90deg, var(--clr-primary), var(--clr-purple), var(--clr-primary));
            opacity: 0.2;
        }
        .process-step {
            text-align: center;
            position: relative;
            padding: 0 12px;
        }
        .process-step .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(124, 58, 237, 0.12));
            border: 2px solid rgba(0, 212, 255, 0.2);
            color: var(--clr-primary);
            transition: all var(--transition);
            position: relative;
            z-index: 2;
        }
        .process-step:hover .step-num {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-purple));
            color: #fff;
            border-color: transparent;
            box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
            transform: scale(1.08);
        }
        .process-step h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--clr-text-secondary);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border-radius: var(--radius-md);
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--clr-border-hover);
        }
        .faq-item .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--clr-text);
            background: none;
            border: none;
            text-align: left;
            transition: color var(--transition);
        }
        .faq-item .faq-question:hover {
            color: var(--clr-primary);
        }
        .faq-item .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 212, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--clr-primary);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }
        .faq-item .faq-answer p {
            color: var(--clr-text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.06), rgba(124, 58, 237, 0.06));
            border-top: 1px solid var(--clr-border);
            border-bottom: 1px solid var(--clr-border);
        }
        .cta-box {
            text-align: center;
            padding: 60px 24px;
            border-radius: var(--radius-lg);
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 15, 42, 0.88), rgba(11, 15, 42, 0.75));
            z-index: 1;
        }
        .cta-box>* {
            position: relative;
            z-index: 2;
        }
        .cta-box h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-box p {
            color: var(--clr-text-secondary);
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-box .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 44px;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-purple));
            color: #fff;
            border: none;
            box-shadow: 0 8px 32px rgba(0, 212, 255, 0.3);
            transition: all var(--transition);
        }
        .cta-box .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 44px rgba(0, 212, 255, 0.45);
        }
        .cta-box .btn-cta:active {
            transform: translateY(-1px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--clr-bg-alt);
            border-top: 1px solid var(--clr-border);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 40px;
        }
        .footer-col .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-col .footer-logo .logo-icon-sm {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            color: #fff;
            font-weight: 700;
        }
        .footer-col .footer-desc {
            color: var(--clr-text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .footer-col .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-col .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--clr-border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--clr-text-secondary);
            font-size: 1rem;
            transition: all var(--transition);
        }
        .footer-col .footer-social a:hover {
            background: rgba(0, 212, 255, 0.1);
            border-color: rgba(0, 212, 255, 0.2);
            color: var(--clr-primary);
            transform: translateY(-3px);
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--clr-text);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--clr-text-secondary);
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--clr-primary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--clr-border);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--clr-text-muted);
        }
        .footer-bottom a {
            color: var(--clr-text-muted);
        }
        .footer-bottom a:hover {
            color: var(--clr-primary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-tabs {
                display: none;
            }
            .header-cta .btn-header {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .hero {
                min-height: 80vh;
                padding: 100px 20px 60px;
            }
            .hero .hero-stats {
                gap: 24px;
                margin-top: 40px;
            }
            .hero .hero-stats .stat-number {
                font-size: 1.6rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .categories-grid {
                grid-template-columns: 1fr;
            }
            .category-card {
                min-height: 220px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card .stat-number {
                font-size: 1.8rem;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .news-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px 18px;
            }
            .news-item .news-num {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-box {
                padding: 40px 20px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero .hero-actions .btn-primary,
            .hero .hero-actions .btn-secondary {
                padding: 12px 28px;
                font-size: 0.9rem;
                width: 100%;
            }
            .hero .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-card .stat-number {
                font-size: 1.5rem;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .news-item .news-body h4 {
                font-size: 0.95rem;
            }
            .faq-item .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-item .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
        }

        /* ===== 辅助类 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-purple-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 0.6s ease forwards;
        }
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in-d1 {
            animation-delay: 0.1s;
        }
        .fade-in-d2 {
            animation-delay: 0.2s;
        }
        .fade-in-d3 {
            animation-delay: 0.3s;
        }
        .fade-in-d4 {
            animation-delay: 0.4s;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --clr-primary: #1a4b8c;
            --clr-primary-dark: #0f3363;
            --clr-primary-light: #3a7bc8;
            --clr-accent: #f5a623;
            --clr-accent-dark: #d4891a;
            --clr-bg: #f7f9fc;
            --clr-bg-alt: #edf1f7;
            --clr-bg-dark: #0b1a2e;
            --clr-card: #ffffff;
            --clr-text: #1a2332;
            --clr-text-light: #5a6a7e;
            --clr-text-inverse: #ffffff;
            --clr-border: #e0e6ed;
            --clr-border-light: #eef2f6;
            --clr-success: #2ecc71;
            --clr-warning: #f39c12;
            --clr-danger: #e74c3c;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.16);
            --space-xs: 0.375rem;
            --space-sm: 0.75rem;
            --space-md: 1.5rem;
            --space-lg: 2.5rem;
            --space-xl: 4rem;
            --space-2xl: 6rem;
            --font-sans: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-heading: 'Inter', 'Noto Sans SC', 'PingFang SC', sans-serif;
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --max-width: 1200px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            color: var(--clr-text);
            background: var(--clr-bg);
            line-height: 1.7;
            font-size: 1rem;
        }
        a {
            color: var(--clr-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--clr-primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            line-height: 1.3;
            font-weight: 700;
            color: var(--clr-text);
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-md);
        }
        .section-padding {
            padding: var(--space-xl) 0;
        }
        .section-padding-lg {
            padding: var(--space-2xl) 0;
        }
        .text-center {
            text-align: center;
        }
        .text-muted {
            color: var(--clr-text-light);
        }

        /* ===== Foundation Overrides ===== */
        .grid-container {
            max-width: var(--max-width);
        }
        .grid-x {
            margin: 0 -0.75rem;
        }
        .cell {
            padding: 0 0.75rem;
        }
        .button {
            transition: all var(--transition);
            font-weight: 600;
        }

        /* ===== Navigation Tabs ===== */
        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--clr-border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(8px);
            background: rgba(255, 255, 255, 0.97);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.6rem 0;
            gap: var(--space-md);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--clr-primary-dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--clr-primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .logo a {
            color: inherit;
        }
        .logo a:hover {
            color: var(--clr-primary);
        }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            background: var(--clr-bg-alt);
            padding: 0.25rem;
            border-radius: var(--radius-lg);
            flex-wrap: wrap;
        }
        .nav-tab {
            padding: 0.5rem 1.25rem;
            border-radius: var(--radius-lg);
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--clr-text-light);
            transition: all var(--transition);
            white-space: nowrap;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .nav-tab:hover {
            color: var(--clr-primary);
            background: rgba(26, 75, 140, 0.06);
        }
        .nav-tab.active {
            background: #ffffff;
            color: var(--clr-primary-dark);
            box-shadow: var(--shadow-sm);
            font-weight: 600;
        }
        .nav-tab.active::after {
            display: none;
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
        }
        .header-cta .search-wrap {
            display: flex;
            align-items: center;
            background: var(--clr-bg-alt);
            border-radius: var(--radius-lg);
            padding: 0.3rem 0.3rem 0.3rem 1rem;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .header-cta .search-wrap:focus-within {
            border-color: var(--clr-primary-light);
            background: #ffffff;
            box-shadow: 0 0 0 3px rgba(26, 75, 140, 0.08);
        }
        .header-cta .search-wrap input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.85rem;
            color: var(--clr-text);
            width: 120px;
            padding: 0.25rem 0;
        }
        .header-cta .search-wrap input::placeholder {
            color: var(--clr-text-light);
        }
        .header-cta .search-wrap button {
            background: var(--clr-primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-lg);
            padding: 0.4rem 0.9rem;
            font-size: 0.8rem;
            cursor: pointer;
            transition: background var(--transition);
        }
        .header-cta .search-wrap button:hover {
            background: var(--clr-primary-dark);
        }

        /* Mobile toggle */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--clr-text);
            cursor: pointer;
            padding: 0.25rem;
        }

        /* ===== Hero / Banner ===== */
        .category-banner {
            position: relative;
            padding: var(--space-2xl) 0 var(--space-xl);
            background: linear-gradient(135deg, #0b1a2e 0%, #1a3a5c 50%, #0f3363 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .category-banner .banner-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26, 75, 140, 0.4) 0%, transparent 70%);
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .category-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 0.75rem;
            letter-spacing: 1px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .category-banner .banner-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 700px;
            margin: 0 auto var(--space-md);
            line-height: 1.7;
        }
        .category-banner .banner-stats {
            display: flex;
            justify-content: center;
            gap: var(--space-lg);
            flex-wrap: wrap;
            margin-top: var(--space-md);
        }
        .category-banner .stat-item {
            text-align: center;
            color: #fff;
        }
        .category-banner .stat-item .num {
            font-size: 1.8rem;
            font-weight: 800;
            display: block;
            line-height: 1.2;
        }
        .category-banner .stat-item .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            background: #ffffff;
            border-bottom: 1px solid var(--clr-border-light);
            padding: 0.6rem 0;
        }
        .breadcrumb-wrap .breadcrumbs {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--clr-text-light);
        }
        .breadcrumb-wrap .breadcrumbs a {
            color: var(--clr-primary);
        }
        .breadcrumb-wrap .breadcrumbs span {
            color: var(--clr-text);
        }
        .breadcrumb-wrap .breadcrumbs .sep {
            color: var(--clr-border);
        }

        /* ===== Section Titles ===== */
        .section-title {
            font-size: 1.75rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
            color: var(--clr-text);
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--clr-text-light);
            max-width: 640px;
            margin: 0 auto var(--space-lg);
            line-height: 1.6;
        }
        .title-accent {
            display: inline-block;
            width: 50px;
            height: 4px;
            background: var(--clr-accent);
            border-radius: 4px;
            margin-bottom: var(--space-sm);
        }

        /* ===== Cards ===== */
        .card {
            background: var(--clr-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--clr-border-light);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--clr-border);
        }
        .card-image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }
        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card:hover .card-image img {
            transform: scale(1.05);
        }
        .card-image .card-tag {
            position: absolute;
            top: var(--space-sm);
            left: var(--space-sm);
            background: var(--clr-primary);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 0.2rem 0.7rem;
            border-radius: var(--radius-sm);
            letter-spacing: 0.3px;
        }
        .card-body {
            padding: var(--space-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.78rem;
            color: var(--clr-text-light);
            margin-bottom: 0.5rem;
        }
        .card-body .card-meta i {
            margin-right: 0.2rem;
        }
        .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        .card-body h3 a {
            color: var(--clr-text);
        }
        .card-body h3 a:hover {
            color: var(--clr-primary);
        }
        .card-body p {
            font-size: 0.9rem;
            color: var(--clr-text-light);
            line-height: 1.7;
            flex: 1;
        }
        .card-body .card-footer-link {
            margin-top: var(--space-sm);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--clr-primary);
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .card-body .card-footer-link i {
            transition: transform var(--transition);
        }
        .card-body .card-footer-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Featured / Large Card ===== */
        .featured-card {
            background: var(--clr-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--clr-border-light);
            display: flex;
            flex-direction: row;
            transition: all var(--transition);
        }
        .featured-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .featured-card .featured-image {
            flex: 0 0 48%;
            min-height: 320px;
            position: relative;
            overflow: hidden;
        }
        .featured-card .featured-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
            transition: transform 0.5s ease;
        }
        .featured-card:hover .featured-image img {
            transform: scale(1.04);
        }
        .featured-card .featured-body {
            flex: 1;
            padding: var(--space-lg);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-card .featured-body .badge {
            display: inline-block;
            background: var(--clr-accent);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 700;
            padding: 0.2rem 0.8rem;
            border-radius: var(--radius-sm);
            letter-spacing: 0.5px;
            margin-bottom: var(--space-sm);
            align-self: flex-start;
        }
        .featured-card .featured-body h2 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
            line-height: 1.3;
        }
        .featured-card .featured-body h2 a {
            color: var(--clr-text);
        }
        .featured-card .featured-body h2 a:hover {
            color: var(--clr-primary);
        }
        .featured-card .featured-body p {
            color: var(--clr-text-light);
            line-height: 1.7;
            margin-bottom: var(--space-sm);
        }
        .featured-card .featured-body .meta {
            font-size: 0.8rem;
            color: var(--clr-text-light);
            display: flex;
            gap: var(--space-md);
        }

        /* ===== News List ===== */
        .news-list-item {
            display: flex;
            gap: var(--space-md);
            padding: var(--space-md) 0;
            border-bottom: 1px solid var(--clr-border-light);
            transition: background var(--transition);
        }
        .news-list-item:last-child {
            border-bottom: none;
        }
        .news-list-item:hover {
            background: rgba(26, 75, 140, 0.02);
        }
        .news-list-item .list-thumb {
            flex: 0 0 180px;
            aspect-ratio: 16 / 10;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .news-list-item .list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-list-item:hover .list-thumb img {
            transform: scale(1.05);
        }
        .news-list-item .list-content {
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-list-item .list-content .list-tag {
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--clr-primary);
            background: rgba(26, 75, 140, 0.08);
            padding: 0.1rem 0.6rem;
            border-radius: var(--radius-sm);
            align-self: flex-start;
            margin-bottom: 0.4rem;
        }
        .news-list-item .list-content h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .news-list-item .list-content h3 a {
            color: var(--clr-text);
        }
        .news-list-item .list-content h3 a:hover {
            color: var(--clr-primary);
        }
        .news-list-item .list-content p {
            font-size: 0.88rem;
            color: var(--clr-text-light);
            line-height: 1.6;
            flex: 1;
        }
        .news-list-item .list-content .list-meta {
            font-size: 0.78rem;
            color: var(--clr-text-light);
            display: flex;
            gap: var(--space-md);
            margin-top: 0.4rem;
        }

        /* ===== Tags / Badges ===== */
        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .tag {
            display: inline-block;
            padding: 0.3rem 1rem;
            background: var(--clr-bg-alt);
            color: var(--clr-text-light);
            border-radius: var(--radius-lg);
            font-size: 0.82rem;
            font-weight: 500;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .tag:hover {
            background: var(--clr-primary);
            color: #fff;
            border-color: var(--clr-primary);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, #0b1a2e 0%, #1a3a5c 50%, #0f3363 100%);
            position: relative;
            overflow: hidden;
            padding: var(--space-2xl) 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto var(--space-md);
        }
        .cta-section .button-group {
            display: flex;
            justify-content: center;
            gap: var(--space-sm);
            flex-wrap: wrap;
        }
        .cta-section .button {
            padding: 0.85rem 2.2rem;
            border-radius: var(--radius-lg);
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition);
        }
        .cta-section .button.primary {
            background: var(--clr-accent);
            color: #fff;
            border: 2px solid var(--clr-accent);
        }
        .cta-section .button.primary:hover {
            background: var(--clr-accent-dark);
            border-color: var(--clr-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(245, 166, 35, 0.35);
        }
        .cta-section .button.outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .cta-section .button.outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--clr-card);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            margin-bottom: var(--space-sm);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--clr-border-light);
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-item .faq-q {
            font-weight: 700;
            font-size: 1rem;
            color: var(--clr-text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }
        .faq-item .faq-q i {
            color: var(--clr-primary);
            transition: transform var(--transition);
        }
        .faq-item .faq-q.open i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            margin-top: var(--space-sm);
            color: var(--clr-text-light);
            line-height: 1.7;
            font-size: 0.92rem;
            display: none;
        }
        .faq-item .faq-a.show {
            display: block;
        }

        /* ===== Pagination ===== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            gap: 0.3rem;
            margin-top: var(--space-lg);
        }
        .pagination-wrap a,
        .pagination-wrap span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            background: var(--clr-card);
            color: var(--clr-text);
            border: 1px solid var(--clr-border-light);
            transition: all var(--transition);
        }
        .pagination-wrap a:hover {
            background: var(--clr-primary);
            color: #fff;
            border-color: var(--clr-primary);
        }
        .pagination-wrap .current {
            background: var(--clr-primary);
            color: #fff;
            border-color: var(--clr-primary);
        }
        .pagination-wrap .prev,
        .pagination-wrap .next {
            width: auto;
            padding: 0 1rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--clr-bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: var(--space-xl) 0 var(--space-md);
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            margin-bottom: var(--space-lg);
        }
        .site-footer .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: var(--space-sm);
        }
        .site-footer .logo-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--clr-primary-light);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 700;
        }
        .site-footer .footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: var(--space-sm);
        }
        .site-footer .footer-social {
            display: flex;
            gap: 0.75rem;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            transition: all var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--clr-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space-sm);
        }
        .site-footer ul li {
            margin-bottom: 0.4rem;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.85rem;
            transition: color var(--transition);
        }
        .site-footer ul li a:hover {
            color: #fff;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: var(--space-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
            flex-wrap: wrap;
            gap: var(--space-sm);
        }
        .site-footer .footer-bottom i {
            color: var(--clr-primary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .category-banner h1 {
                font-size: 2.2rem;
            }
            .featured-card {
                flex-direction: column;
            }
            .featured-card .featured-image {
                flex: 0 0 240px;
                min-height: 240px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
            .news-list-item .list-thumb {
                flex: 0 0 140px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                padding: 0.4rem 0;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-tabs {
                order: 3;
                width: 100%;
                justify-content: center;
                overflow-x: auto;
                flex-wrap: nowrap;
                padding: 0.2rem;
                gap: 0.15rem;
                display: none;
            }
            .nav-tabs.open {
                display: flex;
            }
            .nav-tab {
                font-size: 0.78rem;
                padding: 0.35rem 0.9rem;
                flex-shrink: 0;
            }
            .header-cta .search-wrap input {
                width: 80px;
            }
            .category-banner {
                min-height: 240px;
                padding: var(--space-lg) 0;
            }
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .category-banner .banner-sub {
                font-size: 0.95rem;
            }
            .category-banner .stat-item .num {
                font-size: 1.3rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .featured-card .featured-body {
                padding: var(--space-md);
            }
            .featured-card .featured-body h2 {
                font-size: 1.2rem;
            }
            .featured-card .featured-image {
                flex: 0 0 200px;
                min-height: 200px;
            }
            .news-list-item {
                flex-direction: column;
                gap: var(--space-sm);
            }
            .news-list-item .list-thumb {
                flex: 0 0 180px;
                width: 100%;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .pagination-wrap a,
            .pagination-wrap span {
                width: 34px;
                height: 34px;
                font-size: 0.8rem;
            }
            .pagination-wrap .prev,
            .pagination-wrap .next {
                width: auto;
                padding: 0 0.7rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 var(--space-sm);
            }
            .category-banner h1 {
                font-size: 1.3rem;
            }
            .category-banner .banner-sub {
                font-size: 0.85rem;
            }
            .category-banner .stat-item .num {
                font-size: 1.1rem;
            }
            .featured-card .featured-image {
                flex: 0 0 160px;
                min-height: 160px;
            }
            .card-body h3 {
                font-size: 1rem;
            }
            .news-list-item .list-content h3 {
                font-size: 0.95rem;
            }
            .nav-tab {
                font-size: 0.72rem;
                padding: 0.25rem 0.7rem;
            }
            .header-cta .search-wrap input {
                width: 60px;
                font-size: 0.75rem;
            }
            .header-cta .search-wrap button {
                padding: 0.3rem 0.6rem;
                font-size: 0.72rem;
            }
            .section-title {
                font-size: 1.2rem;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --clr-primary: #0a1628;
            --clr-primary-light: #1a2a4a;
            --clr-accent: #00d4ff;
            --clr-accent-dark: #0088cc;
            --clr-bg: #f5f7fa;
            --clr-card: #ffffff;
            --clr-text: #1a1a2e;
            --clr-text-muted: #718096;
            --clr-border: #e2e8f0;
            --clr-success: #10b981;
            --clr-warning: #f59e0b;
            --clr-danger: #ef4444;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            color: var(--clr-text);
            background: var(--clr-bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--clr-accent-dark); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--clr-accent); text-decoration: none; }
        a:focus-visible { outline: 3px solid var(--clr-accent); outline-offset: 2px; border-radius: 4px; }
        button, input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }

        /* ===== Typography ===== */
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--clr-primary); }
        h1 { font-size: 2.4rem; letter-spacing: -0.02em; }
        h2 { font-size: 1.8rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--clr-text); }
        .text-muted { color: var(--clr-text-muted); font-size: 0.9rem; }

        /* ===== Nav Tabs ===== */
        .nav-wrapper {
            background: var(--clr-primary);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            height: 72px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--clr-accent);
            color: var(--clr-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 800;
            flex-shrink: 0;
        }
        .nav-logo:hover { color: var(--clr-accent); }
        .nav-tabs { display: flex; align-items: center; gap: 4px; }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255,255,255,0.7);
            transition: var(--transition);
            white-space: nowrap;
            border: 1px solid transparent;
        }
        .nav-tab:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav-tab.active { color: var(--clr-primary); background: var(--clr-accent); font-weight: 600; border-color: var(--clr-accent); }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 22px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--clr-accent-dark), var(--clr-accent));
            transition: var(--transition);
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,212,255,0.3); color: #fff; }
        .nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; padding: 4px 8px; }
        .nav-toggle:focus-visible { outline: 2px solid var(--clr-accent); }

        /* ===== Hero / Banner ===== */
        .article-banner {
            position: relative;
            padding: 80px 0 60px;
            background: var(--clr-primary);
            background-image: linear-gradient(135deg, rgba(10,22,40,0.92), rgba(26,42,74,0.88)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--clr-bg), transparent);
        }
        .article-banner .container { position: relative; z-index: 2; }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-banner .breadcrumb a { color: rgba(255,255,255,0.6); }
        .article-banner .breadcrumb a:hover { color: var(--clr-accent); }
        .article-banner .breadcrumb .sep { color: rgba(255,255,255,0.3); }
        .article-banner .breadcrumb .current { color: rgba(255,255,255,0.85); }
        .article-banner .category-badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(0,212,255,0.2);
            color: var(--clr-accent);
            border: 1px solid rgba(0,212,255,0.3);
            margin-bottom: 16px;
        }
        .article-banner h1 {
            font-size: 2.4rem;
            color: #fff;
            max-width: 900px;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .article-banner .meta {
            display: flex;
            align-items: center;
            gap: 24px;
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .article-banner .meta i { margin-right: 6px; }

        /* ===== Article Content ===== */
        .article-section { padding: 40px 0 60px; }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-body {
            background: var(--clr-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            padding: 40px 44px;
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--clr-text);
        }
        .article-body h2, .article-body h3 { margin-top: 1.8em; margin-bottom: 0.6em; }
        .article-body p { margin-bottom: 1.2em; }
        .article-body ul, .article-body ol { margin-bottom: 1.2em; padding-left: 1.6em; list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 0.4em; }
        .article-body blockquote {
            border-left: 4px solid var(--clr-accent);
            padding: 16px 24px;
            margin: 1.5em 0;
            background: rgba(0,212,255,0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--clr-text-muted);
            font-style: italic;
        }
        .article-body img { border-radius: var(--radius-sm); margin: 1.5em 0; }
        .article-body a { color: var(--clr-accent-dark); font-weight: 500; border-bottom: 1px solid transparent; }
        .article-body a:hover { border-bottom-color: var(--clr-accent); }
        .article-body .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 2em;
            padding-top: 1.5em;
            border-top: 1px solid var(--clr-border);
        }
        .article-body .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 500;
            background: rgba(0,212,255,0.08);
            color: var(--clr-accent-dark);
            border: 1px solid rgba(0,212,255,0.15);
            transition: var(--transition);
        }
        .article-body .tag:hover { background: var(--clr-accent); color: #fff; border-color: var(--clr-accent); }

        /* ===== Sidebar ===== */
        .sidebar { display: flex; flex-direction: column; gap: 32px; }
        .sidebar-card {
            background: var(--clr-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            border: 1px solid var(--clr-border);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--clr-primary);
        }
        .sidebar-card h3 i { color: var(--clr-accent-dark); }
        .sidebar-list { display: flex; flex-direction: column; gap: 14px; }
        .sidebar-list li { border-bottom: 1px solid var(--clr-border); padding-bottom: 14px; }
        .sidebar-list li:last-child { border-bottom: none; padding-bottom: 0; }
        .sidebar-list a {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: var(--clr-text);
            font-size: 0.9rem;
            line-height: 1.4;
            font-weight: 500;
        }
        .sidebar-list a:hover { color: var(--clr-accent-dark); }
        .sidebar-list .s-thumb {
            width: 64px;
            height: 48px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
            background: var(--clr-border);
        }
        .sidebar-list .s-meta { font-size: 0.78rem; color: var(--clr-text-muted); font-weight: 400; margin-top: 4px; display: block; }
        .sidebar-cta-box {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            color: #fff;
        }
        .sidebar-cta-box h4 { color: #fff; font-size: 1.1rem; margin-bottom: 8px; }
        .sidebar-cta-box p { color: rgba(255,255,255,0.7); font-size: 0.85rem; margin-bottom: 20px; }
        .sidebar-cta-box .btn-cta {
            display: inline-block;
            padding: 10px 28px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--clr-accent);
            color: var(--clr-primary);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .sidebar-cta-box .btn-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,212,255,0.3); }

        /* ===== Related Section ===== */
        .related-section { padding: 60px 0 80px; background: var(--clr-card); }
        .related-section h2 { margin-bottom: 32px; text-align: center; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--clr-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--clr-border);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card .rc-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            background: var(--clr-border);
        }
        .related-card .rc-body { padding: 18px 20px 22px; }
        .related-card .rc-body h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .rc-body h4 a { color: var(--clr-primary); }
        .related-card .rc-body h4 a:hover { color: var(--clr-accent-dark); }
        .related-card .rc-body .rc-meta { font-size: 0.78rem; color: var(--clr-text-muted); }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 64px 0;
            background: var(--clr-primary);
            background-image: linear-gradient(135deg, rgba(10,22,40,0.94), rgba(26,42,74,0.9)), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 { color: #fff; font-size: 1.8rem; margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto 28px; font-size: 1rem; }
        .cta-section .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .cta-section .btn-primary {
            padding: 12px 36px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.95rem;
            background: var(--clr-accent);
            color: var(--clr-primary);
            transition: var(--transition);
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-section .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,212,255,0.3); color: var(--clr-primary); }
        .cta-section .btn-outline {
            padding: 12px 36px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.95rem;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.3);
            transition: var(--transition);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-section .btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--clr-primary);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-logo { font-size: 1.2rem; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
        .footer-logo .logo-icon-sm { width: 32px; height: 32px; background: var(--clr-accent); color: var(--clr-primary); border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 0.9rem; font-weight: 800; }
        .footer-desc { font-size: 0.85rem; line-height: 1.7; color: rgba(255,255,255,0.5); margin-bottom: 20px; max-width: 360px; }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 36px; height: 36px; border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex; align-items: center; justify-content: center;
            color: rgba(255,255,255,0.5);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--clr-accent); color: var(--clr-primary); }
        .footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.5); font-size: 0.85rem; transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--clr-accent); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.35);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom i { color: var(--clr-accent); }

        /* ===== 404 State ===== */
        .not-found-box { text-align: center; padding: 80px 20px; }
        .not-found-box i { font-size: 4rem; color: var(--clr-text-muted); margin-bottom: 20px; display: block; }
        .not-found-box h2 { font-size: 1.6rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--clr-text-muted); margin-bottom: 24px; }
        .not-found-box .btn-back {
            display: inline-block;
            padding: 12px 32px;
            border-radius: 100px;
            background: var(--clr-accent);
            color: var(--clr-primary);
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-back:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,212,255,0.3); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-inner { height: 64px; }
            .nav-tabs { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--clr-primary); flex-direction: column; padding: 16px 24px; gap: 8px; border-bottom: 1px solid rgba(255,255,255,0.06); box-shadow: var(--shadow-lg); }
            .nav-tabs.open { display: flex; }
            .nav-tab { width: 100%; justify-content: center; padding: 10px 20px; }
            .nav-cta { display: none; }
            .nav-cta.mobile-show { display: inline-flex; margin-top: 8px; justify-content: center; width: 100%; }
            .nav-toggle { display: block; }
            .article-banner { padding: 60px 0 40px; min-height: 220px; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-body { padding: 24px 20px; font-size: 1rem; }
            .article-layout { gap: 32px; }
            .sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .cta-section h2 { font-size: 1.4rem; }
            .cta-section .btn-group { flex-direction: column; align-items: center; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-banner h1 { font-size: 1.3rem; }
            .article-body { padding: 20px 16px; }
            .article-banner .meta { gap: 12px; font-size: 0.8rem; flex-direction: column; align-items: flex-start; }
            .related-card .rc-img { height: 140px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 0.5rem; }
        .mt-2 { margin-top: 1rem; }
        .mb-2 { margin-bottom: 1rem; }
        .gap-2 { gap: 0.5rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category2 */
:root {
            --clr-primary: #e63946;
            --clr-primary-dark: #b71c1c;
            --clr-primary-light: #ff6b6b;
            --clr-accent: #1d3557;
            --clr-accent-light: #457b9d;
            --clr-bg: #0f0f1a;
            --clr-bg-card: #1a1a2e;
            --clr-bg-alt: #16213e;
            --clr-text: #f1f1f1;
            --clr-text-dim: #a0a0b8;
            --clr-border: #2a2a4a;
            --clr-success: #06d6a0;
            --clr-warning: #ffd166;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 6rem;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

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

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

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

        button,
        input,
        textarea {
            font-family: inherit;
        }

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

        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 0.5rem;
            letter-spacing: -0.02em;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--clr-primary);
            border-radius: 4px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--clr-text-dim);
            margin-bottom: var(--spacing-md);
            max-width: 640px;
        }

        .text-center .section-title::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--clr-border);
            padding: 0.6rem 0;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--clr-text);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--clr-text);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--clr-primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .nav-tabs {
            display: flex;
            gap: 0.4rem;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tab {
            padding: 0.5rem 1.2rem;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--clr-text-dim);
            background: transparent;
            border: 1px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
            cursor: pointer;
        }
        .nav-tab:hover {
            color: var(--clr-text);
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--clr-border);
        }
        .nav-tab.active {
            color: #fff;
            background: var(--clr-primary);
            border-color: var(--clr-primary);
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
        }
        .nav-tab:focus-visible {
            outline: 2px solid var(--clr-primary-light);
            outline-offset: 2px;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1.4rem;
            border-radius: 999px;
            background: var(--clr-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--clr-accent-light);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 24px rgba(29, 53, 87, 0.4);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--clr-text);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
        }

        /* ===== Banner ===== */
        .page-banner {
            position: relative;
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            isolation: isolate;
            text-align: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 15, 26, 0.75) 0%, rgba(15, 15, 26, 0.55) 80%, var(--clr-bg) 100%);
            z-index: 0;
        }
        .page-banner>* {
            position: relative;
            z-index: 1;
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 0.8rem;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 700px;
            margin: 0 auto;
        }
        .banner-badge {
            display: inline-block;
            padding: 0.3rem 1.2rem;
            border-radius: 999px;
            background: var(--clr-primary);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 1rem;
        }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: var(--spacing-md);
        }

        .topic-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--clr-border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .topic-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(230, 57, 70, 0.3);
        }
        .topic-card .card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .topic-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .topic-card:hover .card-img img {
            transform: scale(1.05);
        }
        .topic-card .card-img .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 0.2rem 0.8rem;
            border-radius: 999px;
            background: var(--clr-primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .topic-card .card-img .card-duration {
            position: absolute;
            bottom: 12px;
            right: 12px;
            padding: 0.15rem 0.7rem;
            border-radius: 999px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 500;
        }
        .topic-card .card-body {
            padding: var(--spacing-sm);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .topic-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 0.4rem;
            line-height: 1.4;
        }
        .topic-card .card-body h3 a {
            color: inherit;
        }
        .topic-card .card-body h3 a:hover {
            color: var(--clr-primary-light);
        }
        .topic-card .card-body p {
            font-size: 0.9rem;
            color: var(--clr-text-dim);
            flex: 1;
            margin-bottom: 0.8rem;
        }
        .topic-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--clr-text-dim);
            border-top: 1px solid var(--clr-border);
            padding-top: 0.7rem;
        }
        .topic-card .card-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }

        /* ===== Featured Topic (大专题) ===== */
        .featured-topic {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-md);
            background: var(--clr-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--clr-border);
            margin-bottom: var(--spacing-md);
        }
        .featured-topic .ft-img {
            min-height: 320px;
            overflow: hidden;
        }
        .featured-topic .ft-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .featured-topic .ft-content {
            padding: var(--spacing-md);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-topic .ft-content .ft-badge {
            display: inline-block;
            padding: 0.2rem 1rem;
            border-radius: 999px;
            background: var(--clr-success);
            color: #0f0f1a;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-bottom: 0.8rem;
            align-self: flex-start;
        }
        .featured-topic .ft-content h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 0.6rem;
            line-height: 1.3;
        }
        .featured-topic .ft-content p {
            color: var(--clr-text-dim);
            font-size: 1rem;
            margin-bottom: 1.2rem;
        }
        .featured-topic .ft-content .ft-stats {
            display: flex;
            gap: var(--spacing-md);
            margin-bottom: 1.2rem;
        }
        .featured-topic .ft-content .ft-stats .stat {
            text-align: center;
        }
        .featured-topic .ft-content .ft-stats .stat .num {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--clr-primary-light);
            display: block;
            line-height: 1.2;
        }
        .featured-topic .ft-content .ft-stats .stat .label {
            font-size: 0.75rem;
            color: var(--clr-text-dim);
        }

        /* ===== Timeline ===== */
        .timeline {
            position: relative;
            padding-left: 2.5rem;
            list-style: none;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--clr-border);
        }
        .timeline li {
            position: relative;
            margin-bottom: var(--spacing-md);
            padding-left: 0.5rem;
        }
        .timeline li::before {
            content: '';
            position: absolute;
            left: -2.1rem;
            top: 0.4rem;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--clr-primary);
            border: 3px solid var(--clr-bg);
            box-shadow: 0 0 0 2px var(--clr-primary);
        }
        .timeline li .tl-time {
            font-size: 0.8rem;
            color: var(--clr-primary-light);
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .timeline li h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--clr-text);
            margin: 0.2rem 0 0.3rem;
        }
        .timeline li p {
            font-size: 0.9rem;
            color: var(--clr-text-dim);
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .faq-item {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-sm) var(--spacing-md);
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(230, 57, 70, 0.25);
        }
        .faq-item summary {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--clr-text);
            cursor: pointer;
            padding: 0.4rem 0;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .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: 1rem;
            color: var(--clr-text-dim);
            transition: var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0.6rem 0 0.4rem;
            color: var(--clr-text-dim);
            font-size: 0.95rem;
            border-top: 1px solid var(--clr-border);
            margin-top: 0.4rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--clr-accent) 0%, #0a1a2f 100%);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            border: 1px solid var(--clr-border);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.6rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            max-width: 580px;
            margin: 0 auto var(--spacing-sm);
            font-size: 1.05rem;
        }
        .cta-btn-group {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 2rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-primary {
            background: var(--clr-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--clr-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--clr-bg-card);
            border-top: 1px solid var(--clr-border);
            padding: var(--spacing-lg) 0 var(--spacing-sm);
            margin-top: var(--spacing-xl);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-md);
        }
        .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--clr-text);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.8rem;
        }
        .logo-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--clr-primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
        }
        .footer-desc {
            color: var(--clr-text-dim);
            font-size: 0.9rem;
            margin-bottom: 1rem;
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 0.8rem;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--clr-border);
            color: var(--clr-text-dim);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--clr-primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--clr-text);
            margin-bottom: 0.8rem;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.4rem;
        }
        .footer-col ul li a {
            color: var(--clr-text-dim);
            font-size: 0.9rem;
        }
        .footer-col ul li a:hover {
            color: var(--clr-primary-light);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            border-top: 1px solid var(--clr-border);
            padding-top: var(--spacing-sm);
            margin-top: var(--spacing-md);
            font-size: 0.85rem;
            color: var(--clr-text-dim);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .featured-topic {
                grid-template-columns: 1fr;
            }
            .featured-topic .ft-img {
                min-height: 240px;
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav-tabs {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(15, 15, 26, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: var(--spacing-sm);
                border-bottom: 1px solid var(--clr-border);
                gap: 0.3rem;
                max-height: 70vh;
                overflow-y: auto;
            }
            .nav-tabs.open {
                display: flex;
            }
            .nav-tab {
                padding: 0.7rem 1rem;
                border-radius: var(--radius-sm);
                border: 1px solid transparent;
            }
            .nav-tab.active {
                border-color: var(--clr-primary);
            }
            .header-cta {
                display: none;
            }
            .header-inner .header-cta {
                display: none;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .featured-topic .ft-content h2 {
                font-size: 1.4rem;
            }
            .featured-topic .ft-content .ft-stats {
                flex-wrap: wrap;
                gap: var(--spacing-sm);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .btn {
                padding: 0.6rem 1.4rem;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 0.8rem;
            }
            .page-banner {
                padding: var(--spacing-lg) 0 var(--spacing-md);
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
            .topic-card .card-body h3 {
                font-size: 1.05rem;
            }
            .featured-topic .ft-content {
                padding: var(--spacing-sm);
            }
            .timeline {
                padding-left: 1.8rem;
            }
            .timeline li::before {
                left: -1.4rem;
                width: 10px;
                height: 10px;
            }
            .faq-item {
                padding: var(--spacing-xs) var(--spacing-sm);
            }
            .cta-section {
                padding: var(--spacing-md) var(--spacing-sm);
            }
        }

        /* ===== Additional Utilities ===== */
        .mt-lg {
            margin-top: var(--spacing-lg);
        }
        .mb-lg {
            margin-bottom: var(--spacing-lg);
        }
        .mt-md {
            margin-top: var(--spacing-md);
        }
        .mb-md {
            margin-bottom: var(--spacing-md);
        }
        .py-lg {
            padding-top: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
        }
        .py-xl {
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }
        .text-center {
            text-align: center;
        }
        .text-dim {
            color: var(--clr-text-dim);
        }

        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-md);
        }
        @media (max-width: 768px) {
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }

        .badge-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .badge {
            display: inline-block;
            padding: 0.25rem 1rem;
            border-radius: 999px;
            background: var(--clr-border);
            color: var(--clr-text);
            font-size: 0.8rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .badge:hover {
            background: var(--clr-primary);
            color: #fff;
        }
        .badge-hot {
            background: rgba(230, 57, 70, 0.2);
            color: var(--clr-primary-light);
        }
        .badge-hot:hover {
            background: var(--clr-primary);
            color: #fff;
        }

        .stat-row {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            justify-content: center;
        }
        .stat-item {
            text-align: center;
            padding: var(--spacing-sm) var(--spacing-md);
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            min-width: 120px;
        }
        .stat-item .num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--clr-primary-light);
            display: block;
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: 0.85rem;
            color: var(--clr-text-dim);
        }