/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a56db;
            --primary-light: #3b82f6;
            --primary-dark: #1e40af;
            --primary-bg: #eff6ff;
            --secondary: #0ea5e9;
            --secondary-light: #7dd3fc;
            --accent: #f59e0b;
            --accent-light: #fde68a;
            --success: #10b981;
            --success-light: #d1fae5;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --text-muted: #94a3b8;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px 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, 0.18);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --nav-height: 68px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::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);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: 2.5rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.25rem;
        }
        ::selection {
            background: var(--primary-light);
            color: #fff;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: 880px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            color: var(--primary);
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
        }
        .nav-main a i {
            font-size: 0.85rem;
        }
        .nav-main a:hover,
        .nav-main a.active {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border-radius: 24px;
            padding: 0 14px;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }
        .nav-search input {
            background: transparent;
            padding: 8px 6px;
            width: 160px;
            font-size: 0.85rem;
            color: var(--text);
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }
        .nav-search button {
            color: var(--text-light);
            padding: 6px 4px;
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .nav-search button:hover {
            color: var(--primary);
        }
        .mobile-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text);
            padding: 6px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--bg-alt);
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            padding: calc(var(--nav-height) + 48px) 0 72px;
            background: linear-gradient(135deg, var(--bg) 0%, var(--primary-bg) 50%, #eef2ff 100%);
            position: relative;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.10) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -15%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.06;
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 2.75rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--text);
        }
        .hero-content h1 span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 480px;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 24px;
        }
        .hero-badges .badge {
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: rgba(59, 130, 246, 0.10);
            color: var(--primary);
            border: 1px solid rgba(59, 130, 246, 0.20);
        }
        .hero-badges .badge i {
            margin-right: 4px;
            font-size: 0.75rem;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .hero-image {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-image img {
            max-width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            transform: perspective(800px) rotateY(-3deg);
            transition: transform 0.6s ease;
        }
        .hero-image img:hover {
            transform: perspective(800px) rotateY(0deg);
        }
        .hero-image-float {
            position: absolute;
            bottom: -12px;
            left: -12px;
            background: var(--bg);
            padding: 12px 20px;
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--success);
        }
        .hero-image-float i {
            font-size: 1.2rem;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
            cursor: pointer;
            text-align: center;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.30);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 86, 219, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.25);
        }
        .btn-secondary {
            background: transparent;
            color: var(--text);
            border-color: var(--border);
        }
        .btn-secondary:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: var(--primary-bg);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.30);
        }
        .btn-accent:hover {
            background: #d97706;
            border-color: #d97706;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark .section-subtitle {
            color: #fff;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 48px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            margin: 12px auto 0;
        }
        .section-subtitle {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
            font-weight: 400;
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border);
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }
        .card:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-alt {
            background: var(--bg-alt);
            border-color: transparent;
        }
        .card-alt:hover {
            background: var(--bg);
            border-color: var(--border);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            background: var(--primary-bg);
            margin-bottom: 16px;
        }
        .card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .card p {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        /* ===== 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: 16px;
            font-size: 0.78rem;
            font-weight: 500;
        }
        .badge-primary {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .badge-accent {
            background: var(--accent-light);
            color: #b45309;
        }
        .badge-success {
            background: var(--success-light);
            color: #047857;
        }

        /* ===== 分类入口板块 ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border);
            transition: all var(--transition);
            box-shadow: var(--shadow);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .category-card:hover::before {
            opacity: 1;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .category-card .cat-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin: 0 auto 16px;
            transition: transform var(--transition);
        }
        .category-card:hover .cat-icon {
            transform: scale(1.08);
        }
        .category-card h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .category-card p {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 16px;
        }
        .category-card .btn {
            margin-top: 4px;
        }
        .cat-icon-blue {
            background: #dbeafe;
            color: var(--primary);
        }
        .cat-icon-cyan {
            background: #cffafe;
            color: #0891b2;
        }

        /* ===== 最新资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 20px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .news-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }
        .news-item .news-cat {
            flex-shrink: 0;
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--primary-bg);
            color: var(--primary);
            margin-top: 2px;
        }
        .news-item .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-item .news-body h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .news-body h4 a {
            color: inherit;
        }
        .news-item .news-body h4 a:hover {
            color: var(--primary);
        }
        .news-item .news-body p {
            font-size: 0.85rem;
            color: var(--text-light);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 6px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .news-item .news-meta i {
            margin-right: 3px;
        }
        .news-empty {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-light);
            background: var(--bg-alt);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .news-empty i {
            font-size: 2rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            display: block;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-light);
            font-weight: 500;
        }
        .stat-item .stat-icon {
            font-size: 1.6rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            opacity: 0.6;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 16%;
            right: 16%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-light), var(--secondary-light));
            z-index: 0;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            background: var(--primary);
            margin: 0 auto 16px;
            box-shadow: 0 4px 12px rgba(26, 86, 219, 0.30);
        }
        .step-item:nth-child(2) .step-number {
            background: var(--secondary);
        }
        .step-item:nth-child(3) .step-number {
            background: var(--accent);
        }
        .step-item h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .step-item p {
            color: var(--text-light);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item.active {
            border-color: var(--primary-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            background: transparent;
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: var(--bg-alt);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 200px;
            padding: 0 22px 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section h2 {
            font-size: 2rem;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.80);
            font-size: 1.05rem;
            max-width: 520px;
            margin: 0 auto 28px;
            position: relative;
        }
        .cta-section .btn {
            position: relative;
            background: #fff;
            color: var(--primary-dark);
            border-color: #fff;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .cta-section .btn:hover {
            background: var(--bg-alt);
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.20);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand .logo i {
            color: var(--secondary-light);
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, #fff, #cbd5e1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.60);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: color var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-col ul li a i {
            font-size: 0.7rem;
            color: var(--secondary-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.84rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.60);
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 1024px) {
            .nav-main {
                gap: 4px;
            }
            .nav-main a {
                padding: 6px 12px;
                font-size: 0.85rem;
            }
            .nav-search input {
                width: 120px;
            }
            .hero .container {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hero-content p {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-badges {
                justify-content: center;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-image {
                order: -1;
                margin-bottom: 16px;
            }
            .hero-image img {
                max-width: 70%;
                margin: 0 auto;
                transform: none;
            }
            .hero-image-float {
                display: none;
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid::before {
                display: none;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .nav-main,
            .nav-search {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-main.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg);
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                padding: 12px 16px;
                gap: 4px;
                z-index: 999;
            }
            .nav-main.mobile-open a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            .nav-main.mobile-open a.active::after {
                display: none;
            }
            .hero {
                padding: calc(var(--nav-height) + 32px) 0 48px;
                min-height: auto;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-content p {
                font-size: 0.95rem;
            }
            .hero-image img {
                max-width: 90%;
            }
            .section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .categories-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .container {
                padding: 0 16px;
            }
            .news-item {
                flex-direction: column;
                gap: 8px;
            }
            .news-item .news-cat {
                align-self: flex-start;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-badges {
                flex-direction: column;
                align-items: center;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .stat-number {
                font-size: 1.5rem;
            }
            .faq-question {
                font-size: 0.92rem;
                padding: 14px 16px;
            }
            .faq-answer {
                font-size: 0.85rem;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 14px;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
            .category-card {
                padding: 24px 18px;
            }
        }

        /* ===== 辅助类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: category1 */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --secondary: #0f172a;
    --accent: #f59e0b;
    --bg-body: #f8fafc;
    --bg-white: #ffffff;
    --bg-gray: #f1f5f9;
    --bg-dark: #0f172a;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-light: #94a3b8;
    --text-white: #ffffff;
    --border-color: #e2e8f0;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --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);
    --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-body);
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 2px; }
button { cursor: pointer; font-family: inherit; font-size: inherit; border: none; background: none; }
input, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2rem; letter-spacing: -0.01em; }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }
p { color: var(--text-secondary); }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header & Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    gap: 16px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    flex-shrink: 0;
    letter-spacing: -0.01em;
}

.logo i { color: var(--primary); font-size: 1.5rem; }
.logo span { background: linear-gradient(135deg, var(--primary), #7c3aed); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.nav-main {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}

.nav-main a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-main a i { font-size: 0.85rem; opacity: 0.7; }

.nav-main a:hover {
    color: var(--primary);
    background: var(--primary-light);
}

.nav-main a.active {
    color: var(--primary);
    background: var(--primary-light);
    font-weight: 600;
    box-shadow: inset 0 -2px 0 var(--primary);
}

.nav-main a.active i { opacity: 1; }

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

.search-toggle {
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: all var(--transition);
    font-size: 1.1rem;
}

.search-toggle:hover { color: var(--primary); background: var(--primary-light); }

.mobile-menu-btn {
    display: none;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 1.3rem;
    transition: all var(--transition);
}

.mobile-menu-btn:hover { color: var(--primary); background: var(--primary-light); }

/* ===== Mobile Nav ===== */
.mobile-nav {
    display: none;
    background: var(--bg-white);
    border-top: 1px solid var(--border-color);
    padding: 12px 24px 20px;
    box-shadow: var(--shadow-lg);
}

.mobile-nav.open { display: block; }

.mobile-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.mobile-nav a i { width: 20px; text-align: center; color: var(--primary); opacity: 0.7; }

.mobile-nav a:hover { background: var(--primary-light); color: var(--primary); }
.mobile-nav a.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }

/* ===== Hero Banner ===== */
.cat-hero {
    position: relative;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    min-height: 300px;
    display: flex;
    align-items: center;
    overflow: hidden;
    isolation: isolate;
}

.cat-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity: 0.2;
    z-index: 0;
}

.cat-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(37,99,235,0.2) 0%, transparent 70%);
    z-index: 0;
}

.cat-hero .container { position: relative; z-index: 1; padding-top: 48px; padding-bottom: 48px; }

.cat-hero-content { max-width: 720px; }

.cat-hero-content .cat-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    background: rgba(37,99,235,0.2);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(37,99,235,0.3);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: #93c5fd;
    margin-bottom: 20px;
}

.cat-hero-content h1 {
    color: var(--text-white);
    font-size: 2.8rem;
    margin-bottom: 16px;
    line-height: 1.15;
}

.cat-hero-content h1 span { color: #60a5fa; }

.cat-hero-content p {
    color: #cbd5e1;
    font-size: 1.15rem;
    line-height: 1.7;
    max-width: 600px;
}

/* ===== Breadcrumb ===== */
.breadcrumb-wrap {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-light);
    flex-wrap: wrap;
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { font-size: 0.7rem; color: var(--text-light); }
.breadcrumb .current { color: var(--primary); font-weight: 500; }

/* ===== Section Common ===== */
.section { padding: 72px 0; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { margin-bottom: 12px; }
.section-header p { font-size: 1.1rem; max-width: 600px; margin: 0 auto; color: var(--text-secondary); }
.section-header .subtitle { display: inline-block; padding: 4px 16px; background: var(--primary-light); color: var(--primary); border-radius: 100px; font-size: 0.85rem; font-weight: 600; margin-bottom: 12px; }

/* ===== Card Grid ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.card-body { padding: 24px; }

.card-body .card-tag {
    display: inline-block;
    padding: 2px 12px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.card-body h3 { font-size: 1.15rem; margin-bottom: 8px; }
.card-body h3 a { color: var(--text-primary); }
.card-body h3 a:hover { color: var(--primary); }
.card-body p { font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.6; }

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-light);
}

.card-footer .read-more {
    color: var(--primary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: all var(--transition);
}

.card-footer .read-more:hover { gap: 8px; color: var(--primary-dark); }

/* ===== Step Flow ===== */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.step-card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
    position: relative;
}

.step-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0 auto 16px;
    transition: all var(--transition);
}

.step-card:hover .step-number { background: var(--primary-dark); transform: scale(1.05); }

.step-card h4 { font-size: 1.1rem; margin-bottom: 8px; }
.step-card p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.6; }

/* ===== FAQ ===== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all var(--transition);
}

.faq-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition);
    gap: 12px;
}

.faq-question i { color: var(--primary); font-size: 0.9rem; transition: transform var(--transition); }

.faq-item.open .faq-question i { transform: rotate(180deg); }

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 24px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 0 24px 20px;
}

/* ===== Tools / Methods ===== */
.methods-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.method-card {
    display: flex;
    gap: 20px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}

.method-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }

.method-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.method-body h4 { font-size: 1.1rem; margin-bottom: 6px; }
.method-body p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.6; }

/* ===== CTA ===== */
.cta-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    padding: 72px 0;
    text-align: center;
}

.cta-section h2 { color: var(--text-white); font-size: 2.2rem; margin-bottom: 12px; }
.cta-section p { color: #94a3b8; font-size: 1.1rem; margin-bottom: 32px; max-width: 520px; margin-left: auto; margin-right: auto; }

.btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-white);
}

.btn-primary:hover { background: var(--primary-dark); color: var(--text-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn-outline-light {
    background: transparent;
    color: var(--text-white);
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline-light:hover { border-color: var(--text-white); color: var(--text-white); transform: translateY(-2px); background: rgba(255,255,255,0.05); }

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-dark);
    color: #cbd5e1;
    padding: 56px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 36px;
}

.footer-brand .logo { color: var(--text-white); margin-bottom: 12px; }
.footer-brand .logo span { -webkit-text-fill-color: var(--text-white); background: none; }
.footer-brand p { color: #94a3b8; font-size: 0.92rem; line-height: 1.7; max-width: 280px; }

.footer-col h4 { color: var(--text-white); font-size: 1rem; font-weight: 600; margin-bottom: 16px; }

.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: #94a3b8; font-size: 0.9rem; display: flex; align-items: center; gap: 6px; transition: all var(--transition); }
.footer-col ul li a i { font-size: 0.65rem; opacity: 0.5; }
.footer-col ul li a:hover { color: var(--text-white); padding-left: 4px; }

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.08);
    font-size: 0.85rem;
    color: #64748b;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-social { display: flex; gap: 12px; }

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    color: #94a3b8;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    font-size: 1rem;
}

.footer-social a:hover { background: var(--primary); color: var(--text-white); transform: translateY(-2px); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .card-grid { grid-template-columns: repeat(2, 1fr); }
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .cat-hero-content h1 { font-size: 2.2rem; }
}

@media (max-width: 768px) {
    .header-inner { height: 60px; }
    .nav-main { display: none; }
    .mobile-menu-btn { display: block; }
    .search-toggle { display: none; }

    .cat-hero { min-height: 240px; }
    .cat-hero-content h1 { font-size: 1.8rem; }
    .cat-hero-content p { font-size: 1rem; }

    .section { padding: 48px 0; }
    .section-header { margin-bottom: 32px; }
    .section-header h2 { font-size: 1.6rem; }

    .card-grid { grid-template-columns: 1fr; gap: 20px; }
    .methods-grid { grid-template-columns: 1fr; gap: 20px; }
    .steps-grid { grid-template-columns: 1fr; gap: 16px; }

    .method-card { flex-direction: column; align-items: flex-start; padding: 20px; }

    .cta-section { padding: 48px 24px; }
    .cta-section h2 { font-size: 1.6rem; }

    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .cat-hero-content h1 { font-size: 1.5rem; }
    .btn { padding: 12px 24px; font-size: 0.92rem; }
    .faq-question { padding: 14px 16px; font-size: 0.95rem; }
    .faq-answer { padding: 0 16px; font-size: 0.9rem; }
    .faq-item.open .faq-answer { padding: 0 16px 16px; }
}

/* ===== Skeleton / Loading ===== */
.skeleton { background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: var(--radius-sm); }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ===== Utility ===== */
.text-primary { color: var(--primary); }
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.gap-2 { gap: 8px; }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #1a3a5c;
            --color-primary-light: #2a5a8c;
            --color-primary-dark: #0f2440;
            --color-accent: #e8a23a;
            --color-accent-light: #f0b84a;
            --color-accent-dark: #c88a2a;
            --color-bg: #f8f9fb;
            --color-bg-alt: #eef1f5;
            --color-bg-card: #ffffff;
            --color-bg-dark: #1a2a3a;
            --color-text: #1e2a3a;
            --color-text-light: #5a6a7a;
            --color-text-lighter: #8a9aaa;
            --color-border: #dce0e6;
            --color-border-light: #eaeef2;
            --color-white: #ffffff;
            --color-success: #2a8a5a;
            --color-error: #c43a3a;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.07);
            --shadow-lg: 0 14px 40px rgba(0,0,0,0.10);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.13);
            --transition: 0.25s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --nav-height: 68px;
            --space-section: 5rem;
            --space-block: 2.5rem;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--color-accent); }
        a:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; border-radius: 4px; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; line-height: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--color-primary-dark); }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 2.0rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .text-accent { color: var(--color-accent); }
        .mb-1 { margin-bottom: 0.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .mb-4 { margin-bottom: 2rem; }
        .mb-5 { margin-bottom: 3rem; }
        .mt-2 { margin-top: 1rem; }
        .mt-4 { margin-top: 2rem; }
        .section-title {
            font-size: 2.0rem;
            font-weight: 800;
            color: var(--color-primary-dark);
            margin-bottom: 0.75rem;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-light);
            max-width: 680px;
            margin: 0 auto 2.5rem auto;
        }
        .badge {
            display: inline-block;
            background: var(--color-accent);
            color: var(--color-white);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.2rem 0.9rem;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }
        .badge-sm {
            font-size: 0.7rem;
            padding: 0.15rem 0.7rem;
        }
        .badge-outline {
            background: transparent;
            color: var(--color-primary-light);
            border: 1.5px solid var(--color-primary-light);
        }
        .tag {
            display: inline-block;
            background: var(--color-bg-alt);
            color: var(--color-text-light);
            font-size: 0.8rem;
            padding: 0.25rem 0.9rem;
            border-radius: var(--radius-sm);
            margin: 0.2rem;
            transition: all var(--transition);
        }
        .tag:hover { background: var(--color-primary-light); color: var(--color-white); }
        .divider {
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--color-border), transparent);
            margin: 2rem 0;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.8rem;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
            border-color: var(--color-primary);
        }
        .btn-primary:hover { background: var(--color-primary-light); border-color: var(--color-primary-light); color: var(--color-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-primary:active { transform: translateY(0); }
        .btn-accent {
            background: var(--color-accent);
            color: var(--color-white);
            border-color: var(--color-accent);
        }
        .btn-accent:hover { background: var(--color-accent-light); border-color: var(--color-accent-light); color: var(--color-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-accent:active { transform: translateY(0); }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn-outline:hover { background: var(--color-primary); color: var(--color-white); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
        .btn-lg { padding: 0.9rem 2.5rem; font-size: 1.1rem; border-radius: var(--radius-lg); }
        .btn-sm { padding: 0.45rem 1.2rem; font-size: 0.85rem; border-radius: var(--radius-sm); }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: 0 2px 12px rgba(0,0,0,0.03);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--color-primary-dark);
            letter-spacing: -0.3px;
        }
        .logo i { color: var(--color-accent); font-size: 1.5rem; }
        .logo span { background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 0.2rem;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.2rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-light);
            transition: all var(--transition);
        }
        .nav-main a i { font-size: 0.85rem; }
        .nav-main a:hover { color: var(--color-primary); background: var(--color-bg-alt); }
        .nav-main a.active { color: var(--color-primary); background: var(--color-bg-alt); font-weight: 700; position: relative; }
        .nav-main a.active::after { content: ''; position: absolute; bottom: 2px; left: 1.2rem; right: 1.2rem; height: 3px; background: var(--color-accent); border-radius: 4px; }

        /* Mobile Menu Toggle */
        .menu-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--color-primary-dark);
            padding: 0.5rem;
            border-radius: var(--radius-sm);
            background: var(--color-bg-alt);
        }
        .menu-toggle:hover { background: var(--color-border); }

        /* ===== Hero / Banner (Article) ===== */
        .article-banner {
            position: relative;
            padding: 4.5rem 0 4rem;
            background: var(--color-primary-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: var(--color-white);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,36,64,0.88) 0%, rgba(26,58,92,0.72) 100%);
            z-index: 1;
        }
        .article-banner .container { position: relative; z-index: 2; }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 1.5rem;
        }
        .article-banner .breadcrumb a { color: rgba(255,255,255,0.8); }
        .article-banner .breadcrumb a:hover { color: var(--color-accent); }
        .article-banner .breadcrumb .sep { opacity: 0.5; }
        .article-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-white);
            max-width: 860px;
            line-height: 1.25;
            margin-bottom: 1rem;
            text-shadow: 0 2px 12px rgba(0,0,0,0.2);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1.2rem;
            font-size: 0.95rem;
            color: rgba(255,255,255,0.8);
        }
        .article-meta .meta-item { display: flex; align-items: center; gap: 0.4rem; }
        .article-meta .meta-item i { font-size: 0.85rem; }
        .article-meta .category-tag {
            background: var(--color-accent);
            color: var(--color-white);
            padding: 0.15rem 1rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* ===== Main Article Content ===== */
        .article-main {
            padding: var(--space-section) 0;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 3rem;
        }
        .article-body {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }
        .article-body .featured-image {
            width: 100%;
            border-radius: var(--radius-md);
            margin-bottom: 2rem;
            max-height: 420px;
            object-fit: cover;
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--color-text);
        }
        .article-body .content p { margin-bottom: 1.3rem; }
        .article-body .content h2, .article-body .content h3 { margin-top: 2rem; margin-bottom: 1rem; color: var(--color-primary-dark); }
        .article-body .content ul, .article-body .content ol { margin-bottom: 1.3rem; padding-left: 1.5rem; list-style: disc; }
        .article-body .content li { margin-bottom: 0.4rem; }
        .article-body .content img { border-radius: var(--radius-md); margin: 1.5rem 0; }
        .article-body .content a { color: var(--color-accent-dark); font-weight: 600; text-decoration: underline; }
        .article-body .content a:hover { color: var(--color-accent); }
        .article-body .content blockquote {
            border-left: 4px solid var(--color-accent);
            background: var(--color-bg-alt);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-light);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--color-border-light);
        }
        .article-tags .tag { background: var(--color-bg-alt); }
        .article-nav-links {
            display: flex;
            justify-content: space-between;
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--color-border-light);
        }
        .article-nav-links a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 600;
            color: var(--color-primary-light);
        }
        .article-nav-links a:hover { color: var(--color-accent); }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: 1.8rem 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .sidebar-card h3 i { color: var(--color-accent); }
        .sidebar-list li {
            padding: 0.65rem 0;
            border-bottom: 1px solid var(--color-border-light);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 500;
            color: var(--color-text-light);
            transition: all var(--transition);
        }
        .sidebar-list a:hover { color: var(--color-primary); padding-left: 4px; }
        .sidebar-list a i { font-size: 0.75rem; color: var(--color-accent); }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-light));
            color: var(--color-white);
            border: none;
            padding: 2rem 1.5rem;
            text-align: center;
        }
        .sidebar-cta h3 { color: var(--color-white); justify-content: center; }
        .sidebar-cta p { color: rgba(255,255,255,0.85); font-size: 0.95rem; margin-bottom: 1.5rem; }
        .sidebar-cta .btn { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-white); }
        .sidebar-cta .btn:hover { background: var(--color-accent-light); border-color: var(--color-accent-light); }

        /* ===== Related Posts ===== */
        .related-section {
            background: var(--color-bg-alt);
            padding: var(--space-section) 0;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .related-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
        .related-card .card-body { padding: 1.2rem 1.5rem 1.5rem; }
        .related-card .card-body h4 { font-size: 1.05rem; margin-bottom: 0.4rem; }
        .related-card .card-body h4 a { color: var(--color-primary-dark); }
        .related-card .card-body h4 a:hover { color: var(--color-accent); }
        .related-card .card-body .meta { font-size: 0.8rem; color: var(--color-text-lighter); display: flex; gap: 1rem; }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: var(--space-section) 0;
            background: var(--color-primary-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,36,64,0.9) 0%, rgba(26,58,92,0.75) 100%);
        }
        .cta-section .container { position: relative; z-index: 2; text-align: center; }
        .cta-section h2 { color: var(--color-white); font-size: 2.2rem; margin-bottom: 0.8rem; }
        .cta-section p { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 600px; margin: 0 auto 2rem; }
        .cta-section .btn-group { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: var(--space-section) 0;
            background: var(--color-bg);
        }
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: 1.2rem 1.8rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-primary-dark);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            padding: 0.3rem 0;
        }
        .faq-question i { color: var(--color-accent); transition: transform var(--transition); font-size: 0.9rem; }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 0.5rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }
        .faq-answer.open { max-height: 300px; padding: 1rem 0.5rem 0.5rem; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255,255,255,0.85);
            padding: 3.5rem 0 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand .logo { color: var(--color-white); margin-bottom: 1rem; }
        .footer-brand .logo span { -webkit-text-fill-color: var(--color-white); background: none; }
        .footer-brand p { font-size: 0.95rem; color: rgba(255,255,255,0.65); max-width: 300px; line-height: 1.7; }
        .footer-col h4 { color: var(--color-white); font-size: 1.05rem; font-weight: 700; margin-bottom: 1.2rem; position: relative; padding-bottom: 0.5rem; }
        .footer-col h4::after { content: ''; position: absolute; bottom: 0; left: 0; width: 32px; height: 3px; background: var(--color-accent); border-radius: 4px; }
        .footer-col ul li { margin-bottom: 0.6rem; }
        .footer-col ul a { color: rgba(255,255,255,0.65); font-size: 0.92rem; display: flex; align-items: center; gap: 0.4rem; transition: all var(--transition); }
        .footer-col ul a:hover { color: var(--color-accent); padding-left: 4px; }
        .footer-col ul a i { font-size: 0.65rem; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.88rem;
            color: rgba(255,255,255,0.5);
        }
        .footer-social { display: flex; gap: 0.8rem; }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px; height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            font-size: 1.05rem;
            transition: all var(--transition);
        }
        .footer-social a:hover { background: var(--color-accent); color: var(--color-white); transform: scale(1.05); }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 4rem 2rem;
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }
        .not-found-box i { font-size: 4rem; color: var(--color-text-lighter); margin-bottom: 1.5rem; }
        .not-found-box h2 { font-size: 1.8rem; margin-bottom: 0.8rem; }
        .not-found-box p { color: var(--color-text-light); margin-bottom: 1.5rem; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            :root { --space-section: 3rem; --nav-height: 60px; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            .section-title { font-size: 1.5rem; }
            .article-banner h1 { font-size: 1.8rem; }
            .article-banner { padding: 2.5rem 0 2rem; }
            .article-body { padding: 1.5rem; }
            .nav-main { display: none; }
            .nav-main.open { display: flex; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: var(--color-white); border-bottom: 1px solid var(--color-border); padding: 0.8rem 1.5rem 1.2rem; box-shadow: var(--shadow-md); gap: 0.2rem; }
            .nav-main.open a { padding: 0.6rem 1rem; border-radius: var(--radius-sm); }
            .nav-main.open a.active::after { display: none; }
            .nav-main.open a.active { background: var(--color-bg-alt); }
            .menu-toggle { display: block; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.8rem; }
            .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
            .cta-section h2 { font-size: 1.6rem; }
            .article-meta { gap: 0.8rem; font-size: 0.85rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 1rem; }
            .article-body { padding: 1rem; border-radius: var(--radius-md); }
            .article-banner h1 { font-size: 1.5rem; }
            .btn-lg { padding: 0.7rem 1.8rem; font-size: 1rem; }
            .sidebar-card { padding: 1.2rem 1rem; }
            .footer-grid { gap: 1.2rem; }
            .footer-col h4 { font-size: 0.95rem; }
        }

/* roulang page: category2 */
:root {
            --primary: #1a5cff;
            --primary-dark: #0d47d9;
            --primary-light: #e8eeff;
            --secondary: #ff6b35;
            --accent: #00c9a7;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --text-dark: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-light);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 1rem;
        }

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-dark);
            white-space: nowrap;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-main::-webkit-scrollbar {
            display: none;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            white-space: nowrap;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .nav-main a i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .nav-main a:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(26, 92, 255, 0.15);
        }
        .nav-main a:hover i {
            color: var(--primary);
        }
        .nav-main a.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(26, 92, 255, 0.25);
        }
        .nav-main a.active i {
            color: #fff;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-toggle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: none;
            background: var(--bg-light);
            color: var(--text-body);
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .search-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: transparent;
            color: var(--text-dark);
            font-size: 1.2rem;
            cursor: pointer;
            transition: all var(--transition);
            align-items: center;
            justify-content: center;
        }
        .mobile-toggle:hover {
            background: var(--bg-light);
        }

        /* Mobile nav */
        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 16px 20px;
            border-top: 1px solid var(--border);
            background: var(--bg-white);
        }
        .mobile-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition);
        }
        .mobile-nav a i {
            width: 20px;
            color: var(--text-muted);
        }
        .mobile-nav a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-nav a.active {
            background: var(--primary);
            color: #fff;
        }
        .mobile-nav a.active i {
            color: #fff;
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            padding: 80px 0 80px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #0f172a 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 100%, rgba(26, 92, 255, 0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 0%, rgba(255, 107, 53, 0.08) 0%, transparent 50%);
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .category-hero h1 i {
            color: var(--secondary);
            margin-right: 8px;
        }
        .category-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            line-height: 1.8;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 20px;
        }
        .hero-badge i {
            color: var(--accent);
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 72px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-header .label-tag {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card-article {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card-article:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .card-article .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            display: block;
        }
        .card-article .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-article .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 12px;
        }
        .card-article .card-tags span {
            padding: 2px 12px;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
        }
        .card-article h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-article h3 a {
            color: inherit;
        }
        .card-article h3 a:hover {
            color: var(--primary);
        }
        .card-article p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .card-article .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 14px;
            margin-top: auto;
        }
        .card-article .card-meta i {
            margin-right: 4px;
        }
        .card-article .card-meta a {
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .card-article .card-meta a:hover {
            gap: 8px;
        }

        /* ===== Featured Post ===== */
        .featured-post {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
        }
        .featured-post .fp-img {
            width: 100%;
            height: 100%;
            min-height: 320px;
            object-fit: cover;
            border-radius: 0;
        }
        .featured-post .fp-body {
            padding: 40px 40px 40px 0;
        }
        .featured-post .fp-body .label {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            background: var(--secondary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .featured-post .fp-body h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .featured-post .fp-body p {
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .featured-post .fp-body .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 40px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
        }
        .featured-post .fp-body .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 92, 255, 0.3);
        }

        /* ===== Tags Cloud ===== */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 16px;
        }
        .tags-cloud a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 22px;
            border-radius: 40px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition);
        }
        .tags-cloud a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(26, 92, 255, 0.2);
        }
        .tags-cloud a i {
            font-size: 0.8rem;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .num i {
            font-size: 1.6rem;
            margin-right: 4px;
            color: var(--secondary);
        }
        .stat-item .label {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            background: transparent;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            text-align: left;
            gap: 16px;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: transform 0.3s ease;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            display: none;
        }
        .faq-question[aria-expanded="true"]+.faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, #0d47d9 100%);
            border-radius: var(--radius);
            padding: 64px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-block .container {
            position: relative;
            z-index: 2;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 1.1rem;
            opacity: 0.85;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-block .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .cta-block .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 40px;
            background: #fff;
            color: var(--primary) !important;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
        }
        .cta-block .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.2);
            background: #f0f4ff;
        }
        .cta-block .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 40px;
            background: transparent;
            color: #fff !important;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.4);
            cursor: pointer;
            transition: all var(--transition);
        }
        .cta-block .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
        }
        .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, 0.08);
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, #fff, #94a3b8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }
        .footer-col ul li a i {
            font-size: 0.65rem;
            color: rgba(255, 255, 255, 0.3);
            transition: all var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
            transform: translateX(4px);
        }
        .footer-col ul li a:hover i {
            color: var(--secondary);
            transform: translateX(2px);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: all var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .featured-post {
                grid-template-columns: 1fr;
            }
            .featured-post .fp-body {
                padding: 32px;
            }
            .featured-post .fp-img {
                min-height: 240px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 60px;
            }
            .nav-main {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .mobile-nav.open {
                display: flex;
            }
            .category-hero {
                padding: 56px 0 60px;
                min-height: 240px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .section-block {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-item .num {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-block {
                padding: 40px 24px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .featured-post .fp-body {
                padding: 24px;
            }
            .featured-post .fp-body h2 {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .num {
                font-size: 1.5rem;
            }
            .tags-cloud a {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.88rem;
            }
            .cta-block .btn-primary,
            .cta-block .btn-outline {
                padding: 12px 24px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }
        }