/* roulang page: index */
:root {
            --primary: #1e40af;
            --primary-light: #3b82f6;
            --primary-dark: #1e3a8a;
            --primary-bg: #eff6ff;
            --secondary: #7c3aed;
            --secondary-light: #a78bfa;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-body: #ffffff;
            --bg-section: #f8fafc;
            --bg-card: #ffffff;
            --text-main: #0f172a;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 1rem;
            --radius-sm: 0.5rem;
            --radius-lg: 1.5rem;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-card: 0 2px 12px rgba(0,0,0,0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background: var(--bg-body);
            line-height: 1.6;
            font-size: 1rem;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        @media (min-width: 768px) {
            .container {
                padding: 0 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding: 0 2.5rem;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
        }
        .nav-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
            padding: 0.75rem 0;
            gap: 0.75rem;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }
        .nav-brand .brand-icon {
            width: 2.4rem;
            height: 2.4rem;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 0.6rem;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.25);
        }
        .nav-brand .brand-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .nav-brand .brand-text span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding: 0.25rem 0;
        }
        .nav-links::-webkit-scrollbar {
            display: none;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }
        .nav-links a i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .nav-links a:hover,
        .nav-links a:focus-visible {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-section);
            border-radius: 2rem;
            padding: 0.35rem 0.35rem 0.35rem 1rem;
            border: 1px solid var(--border);
            transition: var(--transition);
            max-width: 180px;
        }
        .nav-search:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }
        .nav-search input {
            flex: 1;
            min-width: 60px;
            background: transparent;
            color: var(--text-main);
            font-size: 0.85rem;
            padding: 0.25rem 0;
        }
        .nav-search input::placeholder {
            color: var(--text-light);
        }
        .nav-search button {
            width: 2rem;
            height: 2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-size: 0.8rem;
            transition: var(--transition);
        }
        .nav-search button:hover {
            background: var(--primary-dark);
            transform: scale(1.05);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 0.4rem;
            background: var(--bg-section);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            cursor: pointer;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .nav-toggle span {
            width: 22px;
            height: 2.5px;
            background: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--primary-light);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 0.25rem;
            padding: 0.75rem 0 1rem;
            border-top: 1px solid var(--border-light);
        }
        .mobile-menu a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .mobile-menu a i {
            width: 1.2rem;
            font-size: 0.95rem;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .mobile-menu.open {
            display: flex;
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-search {
                max-width: 140px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-brand .brand-text {
                font-size: 1.1rem;
            }
        }
        @media (max-width: 480px) {
            .nav-search {
                max-width: 100px;
            }
            .nav-search input {
                min-width: 40px;
                font-size: 0.8rem;
            }
            .nav-brand .brand-icon {
                width: 2rem;
                height: 2rem;
                font-size: 1rem;
            }
            .nav-brand .brand-text {
                font-size: 1rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 3.5rem 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 5rem 0;
            }
        }
        .section-bg {
            background: var(--bg-section);
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 0.5rem;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 600px;
            line-height: 1.6;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2.25rem;
            }
            .section-subtitle {
                font-size: 1.1rem;
            }
        }

        /* ===== Hero ===== */
        .hero {
            padding: 2.5rem 0 3rem;
            background: linear-gradient(135deg, #eff6ff 0%, #f5f3ff 50%, #fefce8 100%);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 60%;
            height: 80%;
            background: radial-gradient(circle at 70% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 50%;
            height: 60%;
            background: radial-gradient(circle at 30% 50%, rgba(124, 58, 237, 0.06) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        @media (min-width: 768px) {
            .hero-grid {
                grid-template-columns: 1fr 1fr;
                gap: 3rem;
            }
            .hero {
                padding: 4rem 0 5rem;
            }
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(30, 64, 175, 0.08);
            color: var(--primary);
            padding: 0.35rem 1rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1rem;
            border: 1px solid rgba(30, 64, 175, 0.12);
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.03em;
            color: var(--text-main);
            margin-bottom: 1rem;
        }
        .hero h1 span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 1.5rem;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.6rem;
            border-radius: 2rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(30, 64, 175, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(30, 64, 175, 0.30);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(30, 64, 175, 0.35);
            outline-offset: 2px;
        }
        .btn-outline {
            background: transparent;
            color: var(--text-main);
            border-color: var(--border);
        }
        .btn-outline:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: var(--primary-bg);
            transform: translateY(-2px);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(59, 130, 246, 0.2);
            outline-offset: 2px;
        }
        .hero-image {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-image-placeholder {
            width: 100%;
            max-width: 480px;
            aspect-ratio: 4/3;
            background: linear-gradient(135deg, #dbeafe, #ede9fe, #fef9c3);
            border-radius: var(--radius-lg);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 2rem;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.5);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.06);
        }
        .hero-image-placeholder i {
            font-size: 3rem;
            color: var(--primary-light);
            margin-bottom: 1rem;
            opacity: 0.7;
        }
        .hero-image-placeholder p {
            font-size: 0.95rem;
            color: var(--text-muted);
            max-width: 280px;
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero p {
                font-size: 0.95rem;
            }
            .hero-actions .btn {
                padding: 0.6rem 1.2rem;
                font-size: 0.85rem;
            }
        }

        /* ===== 分类入口卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 540px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 768px) {
            .category-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 1.75rem 1.5rem;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .category-card .cat-icon {
            width: 3rem;
            height: 3rem;
            border-radius: 0.75rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
            flex-shrink: 0;
        }
        .category-card .cat-icon.blue {
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
        }
        .category-card .cat-icon.purple {
            background: linear-gradient(135deg, #8b5cf6, #6d28d9);
        }
        .category-card .cat-icon.amber {
            background: linear-gradient(135deg, #f59e0b, #d97706);
        }
        .category-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
        }
        .category-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
        }
        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary);
            transition: var(--transition);
            margin-top: 0.25rem;
        }
        .category-card .cat-link i {
            font-size: 0.75rem;
            transition: var(--transition);
        }
        .category-card .cat-link:hover {
            color: var(--primary-dark);
            gap: 0.6rem;
        }

        /* ===== 资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .news-item {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            padding: 1rem 1.25rem;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .news-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-card);
            transform: translateX(4px);
        }
        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .news-item .news-meta .cat-tag {
            background: var(--primary-bg);
            color: var(--primary);
            padding: 0.15rem 0.6rem;
            border-radius: 1rem;
            font-weight: 600;
            font-size: 0.75rem;
        }
        .news-item .news-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            transition: var(--transition);
        }
        .news-item:hover .news-title {
            color: var(--primary);
        }
        .news-item .news-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .news-date {
            font-size: 0.78rem;
            color: var(--text-light);
        }
        @media (min-width: 540px) {
            .news-item {
                flex-direction: row;
                align-items: flex-start;
                gap: 1rem;
                padding: 1.25rem 1.5rem;
            }
            .news-item .news-body {
                flex: 1;
            }
            .news-item .news-date {
                flex-shrink: 0;
                text-align: right;
                min-width: 80px;
            }
        }
        .news-empty {
            text-align: center;
            padding: 2.5rem 1rem;
            color: var(--text-muted);
            background: var(--bg-section);
            border-radius: var(--radius);
            font-size: 0.95rem;
        }
        .news-empty i {
            font-size: 2rem;
            display: block;
            margin-bottom: 0.75rem;
            opacity: 0.4;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
        }
        @media (min-width: 540px) {
            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .stat-card {
            text-align: center;
            padding: 1.5rem 1rem;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-card:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .stat-card .stat-number {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
            font-weight: 500;
        }
        @media (max-width: 400px) {
            .stat-card .stat-number {
                font-size: 1.5rem;
            }
        }

        /* ===== 特色功能 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 540px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 768px) {
            .feature-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 1.75rem 1.5rem;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card .feat-icon {
            width: 3.2rem;
            height: 3.2rem;
            margin: 0 auto 1rem;
            border-radius: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
        }
        .feature-card .feat-icon.blue {
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
        }
        .feature-card .feat-icon.purple {
            background: linear-gradient(135deg, #8b5cf6, #6d28d9);
        }
        .feature-card .feat-icon.green {
            background: linear-gradient(135deg, #10b981, #059669);
        }
        .feature-card .feat-icon.orange {
            background: linear-gradient(135deg, #f97316, #ea580c);
        }
        .feature-card .feat-icon.teal {
            background: linear-gradient(135deg, #14b8a6, #0d9488);
        }
        .feature-card .feat-icon.rose {
            background: linear-gradient(135deg, #f43f5e, #e11d48);
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: var(--text-main);
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1rem 1.25rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-main);
            cursor: pointer;
            background: transparent;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question i {
            font-size: 0.8rem;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question.open i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 1.25rem 0;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .faq-answer.open {
            padding: 0 1.25rem 1.25rem;
            max-height: 300px;
        }
        .faq-answer p {
            margin-bottom: 0.5rem;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            text-align: center;
            color: #fff;
            box-shadow: 0 20px 60px rgba(30, 64, 175, 0.25);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 60%;
            height: 100%;
            background: radial-gradient(circle at center, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            position: relative;
        }
        .cta-box p {
            font-size: 1rem;
            opacity: 0.85;
            margin-bottom: 1.5rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
        }
        .cta-box .btn-cta {
            background: #fff;
            color: var(--primary);
            padding: 0.8rem 2.2rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            border: 2px solid transparent;
            position: relative;
        }
        .cta-box .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.20);
            background: var(--primary-bg);
        }
        .cta-box .btn-cta:focus-visible {
            outline: 3px solid rgba(255, 255, 255, 0.4);
            outline-offset: 2px;
        }
        @media (min-width: 768px) {
            .cta-box {
                padding: 3.5rem 3rem;
            }
            .cta-box h2 {
                font-size: 2rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 2.5rem 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        @media (min-width: 540px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
        }
        .footer-brand .brand-text-footer {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.5rem;
        }
        .footer-brand .brand-text-footer span {
            color: #60a5fa;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .footer-col ul li a:hover {
            color: #60a5fa;
            transform: translateX(4px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.25rem;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.5rem;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: #60a5fa;
        }
        @media (min-width: 540px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
            }
        }

        /* ===== 滚动动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 通用辅助 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .gap-section {
            gap: 2rem;
        }
        .shadow-card-hover {
            transition: var(--transition);
        }
        .shadow-card-hover:hover {
            box-shadow: var(--shadow-hover);
        }
        .focus-ring:focus-visible {
            outline: 3px solid rgba(59, 130, 246, 0.3);
            outline-offset: 2px;
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .tag-cloud .tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.3rem 0.9rem;
            background: var(--bg-section);
            border: 1px solid var(--border);
            border-radius: 2rem;
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: var(--transition);
            font-weight: 500;
        }
        .tag-cloud .tag:hover {
            background: var(--primary-bg);
            color: var(--primary);
            border-color: var(--primary-light);
            transform: translateY(-1px);
        }
        .tag-cloud .tag i {
            font-size: 0.7rem;
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 3rem;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin: 0.75rem 0 1.5rem;
        }
        .divider.center {
            margin-left: auto;
            margin-right: auto;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-light: #3b82f6;
            --primary-dark: #1d4ed8;
            --primary-bg: #eff6ff;
            --secondary: #0ea5e9;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark-light: #1e293b;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.06), 0 1px 2px 0 rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::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;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
            backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.96);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 32px;
        }

        .brand-text {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.03em;
            line-height: 1.2;
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .brand-text span {
            color: var(--primary);
            font-weight: 800;
        }

        .brand-text .highlight {
            color: var(--accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-links a {
            padding: 8px 18px;
            border-radius: 9999px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

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

        .nav-links a:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }

        .nav-links a.active {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

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

        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-white) !important;
            padding: 10px 24px !important;
            border-radius: 9999px !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
            transition: var(--transition);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4) !important;
            background: linear-gradient(135deg, var(--primary-light), var(--primary)) !important;
        }

        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            padding: 8px;
            border-radius: var(--radius-sm);
            background: var(--bg-body);
            cursor: pointer;
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius) var(--radius);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                width: 100%;
                padding: 12px 18px;
                border-radius: var(--radius-sm);
            }

            .nav-cta {
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }
        }

        /* ===== Hero 小尺寸 ===== */
        .page-hero {
            background: linear-gradient(135deg, #1e40af 0%, #1d4ed8 40%, #2563eb 100%);
            padding: 64px 0 56px;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
        }

        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            line-height: 1.8;
        }

        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }

        .page-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }

        .page-hero .breadcrumb a:hover {
            color: #fff;
        }

        .page-hero .breadcrumb i {
            font-size: 0.7rem;
            opacity: 0.6;
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 48px 0 40px;
            }

            .page-hero h1 {
                font-size: 1.8rem;
            }

            .page-hero p {
                font-size: 1rem;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 72px 0;
        }

        .section-alt {
            background: var(--bg-white);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
        }

        .section-header {
            margin-bottom: 48px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            padding: 28px 24px;
            transition: var(--transition);
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }

        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--text-white);
            margin-bottom: 16px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        }

        .card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 步骤流程 ===== */
        .step-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }

        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            border: 1px solid var(--border);
            position: relative;
            transition: var(--transition);
            text-align: center;
        }

        .step-card:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-bg);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            margin: 0 auto 16px;
        }

        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-primary);
        }

        .step-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .step-connector {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }

        .faq-item:first-child {
            padding-top: 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            gap: 16px;
            user-select: none;
        }

        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-answer {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-top: 12px;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

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

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1e40af 0%, #1d4ed8 50%, #2563eb 100%);
            padding: 72px 0;
            text-align: center;
            color: var(--text-white);
            border-radius: 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            left: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .cta-section p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: var(--text-white);
            color: var(--primary);
            padding: 14px 36px;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
            background: #f0f4ff;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 24px;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

            .cta-btn {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .brand-text-footer {
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .footer-brand .brand-text-footer span {
            color: var(--primary-light);
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-white);
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== 工具类 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 9999px;
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--primary-bg);
            color: var(--primary);
            border: 1px solid rgba(37, 99, 235, 0.15);
        }

        .badge-hot {
            background: #fef2f2;
            color: #dc2626;
            border-color: rgba(220, 38, 38, 0.15);
        }

        .badge-new {
            background: #f0fdf4;
            color: #16a34a;
            border-color: rgba(22, 163, 74, 0.15);
        }

        /* ===== 资源卡片网格 ===== */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
        }

        .resource-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 24px 20px 20px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .resource-card:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .resource-card .rc-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--text-white);
            margin-bottom: 4px;
            background: var(--primary);
        }

        .resource-card h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
        }

        .resource-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }

        .resource-card .rc-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 8px;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }

        /* ===== 快速入口 ===== */
        .quick-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
        }

        .quick-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            padding: 20px 16px;
            text-align: center;
            transition: var(--transition);
        }

        .quick-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .quick-item i {
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 8px;
            display: block;
        }

        .quick-item span {
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-primary);
        }

        /* ===== 提示条 ===== */
        .tip-box {
            background: var(--primary-bg);
            border-left: 4px solid var(--primary);
            padding: 20px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
        }

        .tip-box p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .tip-box strong {
            color: var(--primary);
        }

        /* ===== 文章列表 ===== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .article-row {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .article-row:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }

        .article-row .ar-num {
            width: 32px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            text-align: center;
            flex-shrink: 0;
        }

        .article-row .ar-title {
            flex: 1;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-primary);
        }

        .article-row .ar-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        @media (max-width: 520px) {
            .article-row {
                flex-wrap: wrap;
                gap: 8px;
            }

            .article-row .ar-meta {
                width: 100%;
                padding-left: 48px;
            }
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-item {
            padding: 6px 18px;
            border-radius: 9999px;
            font-size: 0.82rem;
            font-weight: 500;
            background: var(--bg-white);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .tag-item:hover {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
            transform: translateY(-1px);
        }

        /* ===== 空状态占位 ===== */
        .empty-state {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
        }

        .empty-state i {
            font-size: 3rem;
            margin-bottom: 16px;
            opacity: 0.4;
        }

        .empty-state p {
            font-size: 1rem;
        }

/* roulang page: article */
:root {
            --primary: #1e40af;
            --primary-light: #3b82f6;
            --primary-dark: #1e3a8a;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border-color: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header & Nav */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(12px);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }
        .brand-text {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
            text-decoration: none;
        }
        .brand-text span {
            color: var(--accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            text-decoration: none;
            transition: var(--transition);
            position: relative;
        }
        .nav-links a i {
            font-size: 1rem;
            color: var(--text-light);
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(30, 64, 175, 0.06);
        }
        .nav-links a:hover i {
            color: var(--primary-light);
        }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(30, 64, 175, 0.08);
            font-weight: 600;
        }
        .nav-links a.active i {
            color: var(--primary);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--primary);
            border-radius: 3px 3px 0 0;
        }
        .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 8px 22px !important;
            border-radius: 50px !important;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.25);
        }
        .nav-cta i {
            color: #fff !important;
        }
        .nav-cta:hover {
            background: var(--primary-dark) !important;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(30, 64, 175, 0.35) !important;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-main);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .mobile-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }
        /* Article Hero */
        .article-hero {
            background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
            padding: 60px 0 50px;
            border-bottom: 1px solid var(--border-color);
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-hero .breadcrumb a {
            color: var(--primary-light);
            text-decoration: none;
        }
        .article-hero .breadcrumb a:hover {
            color: var(--primary);
        }
        .article-hero .breadcrumb .sep {
            color: var(--text-light);
        }
        .article-hero .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }
        .article-hero .article-meta .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .article-hero .article-meta .date {
            color: var(--text-muted);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-hero .article-meta .date i {
            color: var(--text-light);
        }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            letter-spacing: -0.5px;
            max-width: 800px;
        }
        /* Article Content */
        .article-main {
            padding: 50px 0 60px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 48px 52px;
            border: 1px solid var(--border-color);
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-main);
        }
        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-top: 36px;
            margin-bottom: 16px;
            color: var(--primary-dark);
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-top: 28px;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .article-body p {
            margin-bottom: 20px;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: var(--primary);
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary-light);
            background: #f1f5f9;
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .article-body .not-found-msg {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            font-size: 1.1rem;
        }
        .article-body .not-found-msg a {
            display: inline-block;
            margin-top: 16px;
            padding: 10px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
        }
        .article-body .not-found-msg a:hover {
            background: var(--primary-dark);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
        }
        .article-tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #f1f5f9;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-muted);
            text-decoration: none;
        }
        .article-tags .tag:hover {
            background: var(--primary);
            color: #fff;
        }
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--primary-light);
            text-decoration: none;
            font-weight: 500;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            background: #f8fafc;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-nav a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        /* Related Posts */
        .related-section {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 50px 0 60px;
        }
        .related-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 36px;
            color: var(--text-main);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-body);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            padding: 24px;
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .cat-tag {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary-light);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }
        .related-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card h3 a {
            color: var(--text-main);
            text-decoration: none;
        }
        .related-card h3 a:hover {
            color: var(--primary);
        }
        .related-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .related-card .meta {
            font-size: 0.8rem;
            color: var(--text-light);
            margin-top: 12px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 56px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .brand-text-footer {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.3px;
            margin-bottom: 12px;
        }
        .footer-brand .brand-text-footer span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: #94a3b8;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: #64748b;
        }
        .footer-bottom a {
            color: var(--accent-light);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-card);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
                gap: 4px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                background: rgba(30, 64, 175, 0.08);
            }
            .nav-cta {
                width: 100%;
                justify-content: center;
                margin-top: 4px;
            }
            .mobile-toggle {
                display: block;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-body {
                padding: 28px 20px;
            }
            .article-hero {
                padding: 40px 0 30px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .brand-text {
                font-size: 1.3rem;
            }
            .article-nav {
                flex-direction: column;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .article-hero h1 {
                font-size: 1.3rem;
            }
            .article-body {
                padding: 20px 16px;
                font-size: 0.95rem;
            }
            .article-hero .article-meta {
                gap: 12px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1e3a5f;
            --primary-light: #2a5080;
            --primary-dark: #142b47;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c98d2a;
            --bg-light: #f7f8fa;
            --bg-white: #ffffff;
            --text-primary: #1a2332;
            --text-secondary: #4a5568;
            --text-muted: #8a94a6;
            --border-color: #e9ecf0;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --shadow-card: 0 4px 20px rgba(30, 58, 95, 0.08);
            --shadow-hover: 0 12px 40px rgba(30, 58, 95, 0.15);
            --shadow-nav: 0 2px 24px rgba(30, 58, 95, 0.06);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .site-header {
            background: var(--bg-white);
            box-shadow: var(--shadow-nav);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid var(--border-color);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            gap: 1rem;
        }

        .brand-text {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.03em;
            display: flex;
            align-items: center;
            gap: 0.15rem;
        }
        .brand-text span {
            color: var(--accent);
        }
        .brand-text .brand-suffix {
            font-weight: 400;
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-left: 0.2rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-links a {
            padding: 0.6rem 1.1rem;
            border-radius: var(--radius-sm);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 0.4rem;
            transition: var(--transition);
        }
        .nav-links a i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(30, 58, 95, 0.06);
        }
        .nav-links a:hover i {
            color: var(--primary);
        }
        .nav-links a.active {
            color: var(--bg-white);
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(30, 58, 95, 0.25);
        }
        .nav-links a.active i {
            color: var(--accent-light);
        }

        .nav-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary-dark) !important;
            padding: 0.6rem 1.4rem !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 14px rgba(232, 168, 56, 0.35);
            transition: var(--transition);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 168, 56, 0.45) !important;
            background: linear-gradient(135deg, var(--accent-light), var(--accent)) !important;
        }
        .nav-cta i {
            color: var(--primary-dark) !important;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            padding: 0.4rem;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            background: rgba(30, 58, 95, 0.06);
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 1rem 1.5rem 1.5rem;
                box-shadow: 0 24px 40px rgba(30, 58, 95, 0.12);
                border-top: 1px solid var(--border-color);
                gap: 0.25rem;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 0.75rem 1rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-cta {
                margin-top: 0.5rem;
                text-align: center;
                justify-content: center;
            }
            .header-inner {
                padding: 0.6rem 0;
            }
            .brand-text {
                font-size: 1.25rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 1rem;
            }
            .brand-text .brand-suffix {
                display: none;
            }
        }

        /* ===== Hero ===== */
        .hero-activities {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 60%, #0f2035 100%);
            padding: 4rem 0 5rem;
            position: relative;
            overflow: hidden;
        }
        .hero-activities::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 20% 50%, rgba(232, 168, 56, 0.15), transparent 60%),
                radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.05), transparent 50%);
            pointer-events: none;
        }
        .hero-activities .container {
            position: relative;
            z-index: 1;
        }
        .hero-activities h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }
        .hero-activities h1 span {
            color: var(--accent-light);
        }
        .hero-activities p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 2rem;
        }
        .hero-stats {
            display: flex;
            gap: 2.5rem;
            flex-wrap: wrap;
            margin-top: 2rem;
        }
        .hero-stats .stat-item {
            color: #fff;
        }
        .hero-stats .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1.2;
        }
        .hero-stats .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 0.25rem;
        }

        @media (max-width: 768px) {
            .hero-activities {
                padding: 3rem 0 3.5rem;
            }
            .hero-activities h1 {
                font-size: 2rem;
            }
            .hero-activities p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 1.5rem;
            }
            .hero-stats .stat-number {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .hero-activities h1 {
                font-size: 1.65rem;
            }
            .hero-stats {
                flex-direction: column;
                gap: 0.75rem;
            }
        }

        /* ===== Section ===== */
        .section-padding {
            padding: 4.5rem 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            margin-bottom: 0.5rem;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.7;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2.5rem;
        }
        .section-header .more-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 1rem;
            border-radius: var(--radius-sm);
            background: rgba(30, 58, 95, 0.06);
            transition: var(--transition);
        }
        .section-header .more-link:hover {
            background: rgba(30, 58, 95, 0.12);
            transform: translateX(2px);
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(30, 58, 95, 0.15);
        }
        .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--neutral);
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .card:hover .card-img img {
            transform: scale(1.05);
        }
        .card-img .badge {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 0.75rem;
            padding: 0.25rem 0.75rem;
            border-radius: 999px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }
        .card-img .badge.hot {
            background: var(--danger);
            color: #fff;
        }
        .card-img .badge.new {
            background: var(--success);
            color: #fff;
        }
        .card-body {
            padding: 1.25rem 1.5rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 1rem;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0.75rem;
        }
        .card-meta i {
            margin-right: 0.25rem;
        }
        .card-footer-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .card-footer-link:hover {
            color: var(--accent-dark);
            gap: 0.7rem;
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-body {
                padding: 1rem 1.25rem 1.25rem;
            }
        }

        /* ===== Mini Card ===== */
        .mini-card {
            display: flex;
            align-items: center;
            gap: 1rem;
            background: var(--bg-white);
            padding: 1rem 1.25rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            cursor: default;
        }
        .mini-card:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(30, 58, 95, 0.15);
        }
        .mini-card .mc-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(30, 58, 95, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .mini-card .mc-icon.accent {
            background: rgba(232, 168, 56, 0.15);
            color: var(--accent-dark);
        }
        .mini-card .mc-icon.success {
            background: rgba(45, 143, 92, 0.12);
            color: var(--success);
        }
        .mini-card .mc-icon.danger {
            background: rgba(217, 74, 74, 0.12);
            color: var(--danger);
        }
        .mini-card .mc-content h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 0.15rem;
        }
        .mini-card .mc-content p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin: 0;
        }

        .mini-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
        }
        @media (max-width: 768px) {
            .mini-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Tags ===== */
        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 2rem;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.45rem 1.1rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            transition: var(--transition);
            cursor: pointer;
        }
        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(30, 58, 95, 0.04);
        }
        .tag.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(30, 58, 95, 0.2);
        }
        .tag i {
            font-size: 0.75rem;
        }

        /* ===== Timeline ===== */
        .timeline {
            position: relative;
            padding-left: 2rem;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0.5rem;
            top: 0.5rem;
            bottom: 0.5rem;
            width: 2px;
            background: var(--border-color);
        }
        .timeline-item {
            position: relative;
            padding: 0 0 2rem 1.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -1.7rem;
            top: 0.4rem;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent);
            border: 3px solid var(--bg-light);
            box-shadow: 0 0 0 2px var(--accent);
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item .tl-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-bottom: 0.25rem;
        }
        .timeline-item .tl-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 0.25rem;
        }
        .timeline-item .tl-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(30, 58, 95, 0.2);
        }
        .faq-question {
            padding: 1.1rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            transition: var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
            line-height: 1.5;
        }
        .faq-question i {
            color: var(--text-muted);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-answer {
            padding: 0 1.5rem 1.1rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-xl);
            padding: 3.5rem 4rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 70% 30%, rgba(232, 168, 56, 0.12), transparent 50%);
            pointer-events: none;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            position: relative;
        }
        .cta-block p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 1.5rem;
            line-height: 1.7;
            position: relative;
        }
        .cta-block .btn-group {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }
        .cta-block .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 0.85rem 2.2rem;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(232, 168, 56, 0.35);
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .cta-block .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 168, 56, 0.5);
            background: var(--accent-light);
        }
        .cta-block .btn-ghost {
            background: transparent;
            color: #fff;
            padding: 0.85rem 2.2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: 2px solid rgba(255, 255, 255, 0.3);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .cta-block .btn-ghost:hover {
            border-color: var(--accent);
            background: rgba(232, 168, 56, 0.1);
            color: var(--accent-light);
        }

        @media (max-width: 768px) {
            .cta-block {
                padding: 2.5rem 1.5rem;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 0.95rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 3.5rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .brand-text-footer {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }
        .footer-brand .brand-text-footer span {
            color: var(--accent-light);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
            transform: translateX(3px);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            padding: 1.5rem 0;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: var(--accent-light);
        }
        .footer-bottom a:hover {
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Skeleton ===== */
        .bg-subtle {
            background: var(--bg-light);
        }
        .bg-white {
            background: var(--bg-white);
        }
        .divider {
            height: 1px;
            background: var(--border-color);
            margin: 0;
            border: none;
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-light);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--neutral-dark);
            border-radius: 999px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

/* roulang page: category3 */
:root {
            --primary: #3b82f6;
            --primary-dark: #2563eb;
            --accent: #d946ef;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --text-body: #0f172a;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --radius-lg: 0.75rem;
            --radius-xl: 1rem;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 0.75rem;
            }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.7rem 0;
            gap: 1rem;
        }
        .brand-text {
            font-size: 1.45rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #1e40af, #7c3aed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .brand-text span {
            background: linear-gradient(135deg, #d946ef, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-links::-webkit-scrollbar {
            display: none;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.1rem;
            border-radius: 2rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: #475569;
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-links a i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .nav-links a:hover {
            background: #eef2ff;
            color: #1e40af;
            transform: translateY(-1px);
        }
        .nav-links a.active {
            background: linear-gradient(135deg, #3b82f6, #7c3aed);
            color: #fff;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
        }
        .nav-links a.active i {
            opacity: 1;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }
        .btn-nav {
            padding: 0.5rem 1.4rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            font-weight: 600;
            background: linear-gradient(135deg, #3b82f6, #7c3aed);
            color: #fff;
            box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
            transition: var(--transition);
        }
        .btn-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(59, 130, 246, 0.4);
        }
        .mobile-toggle {
            display: none;
            background: none;
            font-size: 1.4rem;
            color: #1e293b;
            padding: 0.25rem 0.5rem;
            border-radius: 0.5rem;
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            background: #f1f5f9;
        }
        @media (max-width: 1024px) {
            .nav-links a {
                padding: 0.45rem 0.85rem;
                font-size: 0.82rem;
            }
            .brand-text {
                font-size: 1.25rem;
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 1rem 1.5rem;
                gap: 0.35rem;
                border-bottom: 1px solid #e2e8f0;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
                max-height: 80vh;
                overflow-y: auto;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 0.75rem 1rem;
                border-radius: 0.75rem;
                justify-content: flex-start;
            }
            .nav-cta .btn-nav {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                padding: 0.5rem 0;
            }
            .brand-text {
                font-size: 1.1rem;
            }
            .nav-cta .btn-nav {
                display: none;
            }
        }

        /* ===== Hero ===== */
        .hero-support {
            background: linear-gradient(135deg, #1e3a8a 0%, #312e81 40%, #581c87 100%);
            padding: 4rem 0 5rem;
            position: relative;
            overflow: hidden;
        }
        .hero-support::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            opacity: 0.5;
        }
        .hero-support .container {
            position: relative;
            z-index: 1;
        }
        .hero-support h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }
        .hero-support h1 span {
            background: linear-gradient(135deg, #fde047, #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-support p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        .hero-support .search-box {
            display: flex;
            max-width: 560px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border-radius: 3rem;
            padding: 0.35rem;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-support .search-box input {
            flex: 1;
            padding: 0.9rem 1.5rem;
            background: transparent;
            color: #fff;
            font-size: 1rem;
            border: none;
            outline: none;
            min-width: 0;
        }
        .hero-support .search-box input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }
        .hero-support .search-box button {
            padding: 0.7rem 1.8rem;
            border-radius: 3rem;
            background: linear-gradient(135deg, #f59e0b, #d946ef);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            white-space: nowrap;
            transition: var(--transition);
        }
        .hero-support .search-box button:hover {
            transform: scale(1.04);
            box-shadow: 0 8px 24px rgba(217, 70, 239, 0.4);
        }
        @media (max-width: 768px) {
            .hero-support {
                padding: 3rem 0 3.5rem;
            }
            .hero-support h1 {
                font-size: 2rem;
            }
            .hero-support p {
                font-size: 1rem;
            }
            .hero-support .search-box {
                flex-direction: column;
                background: transparent;
                border: none;
                gap: 0.75rem;
            }
            .hero-support .search-box input {
                background: rgba(255, 255, 255, 0.12);
                border-radius: 2rem;
                padding: 0.75rem 1.2rem;
                border: 1px solid rgba(255, 255, 255, 0.15);
            }
            .hero-support .search-box button {
                padding: 0.65rem 1.4rem;
                align-self: flex-start;
            }
        }
        @media (max-width: 520px) {
            .hero-support h1 {
                font-size: 1.6rem;
            }
        }

        /* ===== Section common ===== */
        .section-padding {
            padding: 4.5rem 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 3rem 0;
            }
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 0.5rem;
            color: #0f172a;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: #64748b;
            max-width: 600px;
            margin-bottom: 2.5rem;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 1.8rem;
            }
        }
        .text-center {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Card ===== */
        .card {
            background: #fff;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-sm);
            border: 1px solid #f1f5f9;
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        /* ===== FAQ ===== */
        .faq-item {
            border-bottom: 1px solid #e2e8f0;
            padding: 1.25rem 0;
            transition: var(--transition);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: #0f172a;
            padding: 0.25rem 0;
            gap: 1rem;
            user-select: none;
        }
        .faq-question i {
            font-size: 1.1rem;
            color: #3b82f6;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: #475569;
            font-size: 0.95rem;
            line-height: 1.7;
            padding: 0 0.25rem;
        }
        .faq-answer.open {
            max-height: 400px;
            padding: 0.75rem 0.25rem 0.25rem;
        }
        @media (max-width: 768px) {
            .faq-question {
                font-size: 0.95rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 3.5rem 0 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand .brand-text-footer {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }
        .footer-brand .brand-text-footer span {
            color: #f0abfc;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: #94a3b8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #f1f5f9;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: #94a3b8;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .footer-col ul li a:hover {
            color: #f0abfc;
            transform: translateX(3px);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.85rem;
            color: #64748b;
        }
        .footer-bottom a {
            color: #93c5fd;
        }
        .footer-bottom a:hover {
            color: #f0abfc;
            text-decoration: underline;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .footer-brand .brand-text-footer {
                font-size: 1.2rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .site-footer {
                padding: 2.5rem 0 1rem;
            }
        }

        /* ===== Support cards ===== */
        .support-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid #f1f5f9;
            transition: var(--transition);
        }
        .support-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
        }
        .support-card .icon-circle {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.25rem;
            font-size: 1.6rem;
            color: #fff;
            background: linear-gradient(135deg, #3b82f6, #7c3aed);
            box-shadow: 0 8px 24px rgba(59, 130, 246, 0.25);
            transition: var(--transition);
        }
        .support-card:hover .icon-circle {
            transform: scale(1.08) rotate(-4deg);
        }
        .support-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #0f172a;
            margin-bottom: 0.5rem;
        }
        .support-card p {
            font-size: 0.92rem;
            color: #64748b;
            line-height: 1.6;
            margin-bottom: 1.2rem;
        }
        .support-card .btn-sm {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.5rem 1.4rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            font-weight: 600;
            background: #eef2ff;
            color: #1e40af;
            transition: var(--transition);
        }
        .support-card .btn-sm:hover {
            background: #1e40af;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(30, 64, 175, 0.25);
        }

        /* ===== Topic card ===== */
        .topic-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 1.5rem 1.25rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid #f1f5f9;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .topic-card .topic-icon {
            width: 44px;
            height: 44px;
            border-radius: 0.75rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            background: linear-gradient(135deg, #3b82f6, #7c3aed);
        }
        .topic-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #0f172a;
        }
        .topic-card p {
            font-size: 0.88rem;
            color: #64748b;
            line-height: 1.6;
            flex: 1;
        }
        .topic-card .topic-tag {
            align-self: flex-start;
            padding: 0.25rem 0.75rem;
            border-radius: 2rem;
            font-size: 0.75rem;
            font-weight: 500;
            background: #eef2ff;
            color: #1e40af;
        }

        /* ===== Contact panel ===== */
        .contact-panel {
            background: linear-gradient(135deg, #1e3a8a, #312e81);
            border-radius: var(--radius-xl);
            padding: 3rem;
            color: #fff;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            box-shadow: 0 16px 48px rgba(30, 58, 138, 0.3);
        }
        .contact-panel h2 {
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: -0.01em;
        }
        .contact-panel p {
            font-size: 1rem;
            opacity: 0.85;
            max-width: 480px;
            line-height: 1.7;
        }
        .contact-panel .btn-group {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .contact-panel .btn-group a {
            padding: 0.75rem 2rem;
            border-radius: 3rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .contact-panel .btn-primary-light {
            background: #fff;
            color: #1e3a8a;
        }
        .contact-panel .btn-primary-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(255, 255, 255, 0.25);
        }
        .contact-panel .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }
        .contact-panel .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .contact-panel {
                padding: 2rem 1.5rem;
                flex-direction: column;
                text-align: center;
            }
            .contact-panel h2 {
                font-size: 1.4rem;
            }
            .contact-panel .btn-group {
                justify-content: center;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.88rem;
            color: #64748b;
            padding: 1rem 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: #3b82f6;
        }
        .breadcrumb a:hover {
            color: #1e40af;
            text-decoration: underline;
        }
        .breadcrumb .sep {
            color: #94a3b8;
            font-size: 0.75rem;
        }
        .breadcrumb .current {
            color: #0f172a;
            font-weight: 500;
        }

        /* ===== Misc ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .grid-4 {
                grid-template-columns: 1fr;
            }
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 0.2rem 0.7rem;
            border-radius: 2rem;
            font-size: 0.75rem;
            font-weight: 600;
            background: #eef2ff;
            color: #1e40af;
        }
        .badge-hot {
            background: linear-gradient(135deg, #fef3c7, #fde68a);
            color: #b45309;
        }
        .badge-new {
            background: linear-gradient(135deg, #d1fae5, #a7f3d0);
            color: #065f46;
        }
        .gap-y-2 {
            gap: 0.5rem 0;
        }