/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #059669;
            --primary-dark: #047857;
            --primary-light: #10b981;
            --accent: #14b8a6;
            --deep: #0f172a;
            --text: #1e293b;
            --muted: #64748b;
            --bg: #f8fafc;
            --white: #ffffff;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 12px 32px rgba(15, 23, 42, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
            object-fit: cover;
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            transition: var(--transition);
        }

        input,
        textarea {
            font-family: inherit;
            transition: var(--transition);
        }

        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            color: var(--deep);
            font-weight: 700;
        }

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

        /* ===== 侧边栏导航 ===== */
        .sidebar {
            position: fixed;
            inset: 0 auto 0 0;
            z-index: 40;
            width: 280px;
            background: var(--white);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            padding: 1.75rem 1.25rem;
            box-shadow: 0 0 40px rgba(15, 23, 42, 0.04);
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.5rem 0.75rem;
            margin-bottom: 2rem;
        }

        .sidebar-logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.25rem;
            font-weight: 800;
            box-shadow: 0 6px 16px rgba(5, 150, 105, 0.25);
            flex-shrink: 0;
        }

        .sidebar-logo-text {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--deep);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .sidebar-logo-text span {
            color: var(--primary);
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 0.35rem;
            flex: 1;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.8rem 1rem;
            border-radius: var(--radius-sm);
            color: var(--muted);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            transition: var(--transition);
        }

        .nav-link:hover {
            background: rgba(5, 150, 105, 0.06);
            color: var(--primary);
        }

        .nav-link.active {
            background: linear-gradient(135deg, rgba(5, 150, 105, 0.1), rgba(20, 184, 166, 0.08));
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--primary);
            border-radius: 0 4px 4px 0;
        }

        .nav-link i {
            width: 22px;
            text-align: center;
            font-size: 1.05rem;
        }

        .sidebar-footer {
            border-top: 1px solid var(--border);
            padding-top: 1.25rem;
            margin-top: auto;
            font-size: 0.82rem;
            color: var(--muted);
            text-align: center;
        }

        /* ===== 移动端顶部栏 ===== */
        .mobile-header {
            position: sticky;
            top: 0;
            z-index: 45;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 1rem;
        }

        .mobile-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 800;
            color: var(--deep);
        }

        .mobile-logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 800;
            font-size: 0.95rem;
        }

        /* ===== 抽屉 ===== */
        .drawer {
            position: fixed;
            inset: 0 auto 0 0;
            z-index: 60;
            width: 280px;
            background: white;
            transform: translateX(-100%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            display: flex;
            flex-direction: column;
            padding: 1.5rem 1.25rem;
            box-shadow: 20px 0 60px rgba(15, 23, 42, 0.15);
        }

        .drawer.open {
            transform: translateX(0);
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            z-index: 55;
            background: rgba(15, 23, 42, 0.5);
            backdrop-filter: blur(3px);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }

        .drawer-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }

        .drawer-close {
            position: absolute;
            top: 1rem;
            right: 1rem;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg);
            color: var(--muted);
            font-size: 1.1rem;
        }

        .drawer-close:hover {
            background: rgba(5, 150, 105, 0.1);
            color: var(--primary);
        }

        .drawer-logo {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            padding: 0.5rem 0.5rem;
            margin-bottom: 1.5rem;
        }

        .drawer-logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 11px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 800;
        }

        .drawer-logo-text {
            font-weight: 800;
            color: var(--deep);
            font-size: 1.1rem;
        }

        /* ===== 主内容区 ===== */
        .main-wrapper {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            overflow: hidden;
            background:
                linear-gradient(120deg, rgba(15, 23, 42, 0.92) 0%, rgba(15, 23, 42, 0.68) 55%, rgba(5, 150, 105, 0.35) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: white;
            padding: 4.5rem 0 3.5rem;
        }

        .hero-content {
            max-width: 680px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 1rem;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            font-size: 0.82rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            backdrop-filter: blur(6px);
        }

        .hero-badge i {
            color: #6ee7b7;
        }

        .hero-title {
            font-size: 3rem;
            line-height: 1.2;
            font-weight: 900;
            color: white;
            margin: 1.25rem 0 1rem;
            letter-spacing: -0.02em;
        }

        .hero-title span {
            background: linear-gradient(135deg, #6ee7b7, #34d399);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.1rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin-bottom: 2rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.85rem;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.65rem;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            box-shadow: 0 8px 24px rgba(5, 150, 105, 0.3);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(5, 150, 105, 0.4);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(5, 150, 105, 0.25);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(52, 211, 153, 0.5);
            outline-offset: 2px;
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.65rem;
            background: rgba(255, 255, 255, 0.08);
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            color: white;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-2px);
        }

        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
        }

        .hero-stat {
            text-align: left;
        }

        .hero-stat-value {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 0.15rem;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 4.5rem 0;
        }

        .section-alt {
            background: var(--white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-header {
            margin-bottom: 2.5rem;
        }

        .section-tag {
            display: inline-block;
            padding: 0.25rem 0.9rem;
            background: rgba(5, 150, 105, 0.08);
            color: var(--primary);
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
            letter-spacing: 0.02em;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--deep);
            line-height: 1.3;
        }

        .section-subtitle {
            color: var(--muted);
            font-size: 1rem;
            line-height: 1.7;
            max-width: 600px;
            margin-top: 0.6rem;
        }

        /* ===== 特性卡片 ===== */
        .feature-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 2rem;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(5, 150, 105, 0.25);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 1.25rem;
            background: linear-gradient(135deg, rgba(5, 150, 105, 0.12), rgba(20, 184, 166, 0.12));
            color: var(--primary);
        }

        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

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

        /* ===== 分类卡片 ===== */
        .category-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .category-card-img {
            position: relative;
            height: 190px;
            overflow: hidden;
        }

        .category-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .category-card:hover .category-card-img img {
            transform: scale(1.06);
        }

        .category-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.5), transparent 60%);
        }

        .category-card-body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .category-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: var(--deep);
        }

        .category-card p {
            color: var(--muted);
            font-size: 0.9rem;
            line-height: 1.7;
            flex: 1;
        }

        .category-card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 1rem;
            transition: var(--transition);
        }

        .category-card-link:hover {
            gap: 0.6rem;
            color: var(--primary-dark);
        }

        /* ===== 统计卡片 ===== */
        .stat-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.75rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            color: var(--muted);
            font-size: 0.88rem;
            margin-top: 0.35rem;
        }

        /* ===== 信息列表（CMS）===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .news-card {
            display: flex;
            align-items: flex-start;
            gap: 1.25rem;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(5, 150, 105, 0.3);
        }

        .news-thumb {
            width: 140px;
            height: 96px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-content {
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 0.4rem;
            flex-wrap: wrap;
        }

        .news-cat {
            display: inline-block;
            padding: 0.15rem 0.7rem;
            background: rgba(5, 150, 105, 0.08);
            color: var(--primary);
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .news-time {
            font-size: 0.78rem;
            color: var(--muted);
        }

        .news-content h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--deep);
            line-height: 1.5;
            margin-bottom: 0.3rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-content p {
            color: var(--muted);
            font-size: 0.88rem;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .empty-state {
            background: var(--white);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
            padding: 2.5rem;
            text-align: center;
            color: var(--muted);
        }

        /* ===== 流程 ===== */
        .process-section {
            background: var(--deep);
            color: white;
        }

        .process-section .section-title {
            color: white;
        }

        .process-section .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        .process-section .section-tag {
            background: rgba(255, 255, 255, 0.1);
            color: #6ee7b7;
        }

        .step-item {
            position: relative;
            padding: 1.75rem;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            transition: var(--transition);
            height: 100%;
        }

        .step-item:hover {
            background: rgba(255, 255, 255, 0.09);
            transform: translateY(-4px);
        }

        .step-number {
            font-size: 2.5rem;
            font-weight: 900;
            background: linear-gradient(135deg, #6ee7b7, #34d399);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 0.6rem;
        }

        .step-item h3 {
            color: white;
            font-size: 1.05rem;
            margin-bottom: 0.5rem;
        }

        .step-item p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.88rem;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 0.85rem;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(5, 150, 105, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.15rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--deep);
            width: 100%;
            text-align: left;
        }

        .faq-question i {
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 1.5rem;
            color: var(--muted);
            font-size: 0.92rem;
            line-height: 1.7;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.25rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background:
                linear-gradient(120deg, rgba(5, 150, 105, 0.92), rgba(20, 184, 166, 0.85)),
                url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-radius: 24px;
            padding: 3.5rem 3rem;
            text-align: center;
            color: white;
            box-shadow: 0 20px 60px rgba(5, 150, 105, 0.25);
        }

        .cta-section h2 {
            color: white;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto 1.75rem;
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.75rem;
            background: white;
            color: var(--primary);
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
            transition: var(--transition);
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
            background: #f0fdf4;
        }

        .btn-ghost-white {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.75rem;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.7);
            color: white;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .btn-ghost-white:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: white;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 3rem 0 2rem;
            margin-top: auto;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            margin-bottom: 0.75rem;
        }

        .footer-logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 800;
        }

        .footer-logo-text {
            color: white;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }

        .footer-title {
            color: white;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 0.9rem;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0.45rem;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: #6ee7b7;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.25rem;
            margin-top: 2rem;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.4rem;
            }
            .section-title {
                font-size: 1.75rem;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                display: none;
            }
            .main-wrapper {
                padding-top: 0;
            }
            .hero-section {
                padding: 3rem 0 2.5rem;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline-light {
                justify-content: center;
            }
            .hero-stats-row {
                gap: 1.5rem;
            }
            .section {
                padding: 3rem 0;
            }
            .news-card {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
            .cta-section {
                padding: 2.5rem 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .container-page {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .hero-title {
                font-size: 1.65rem;
            }
            .hero-stats-row {
                gap: 1rem;
            }
            .hero-stat-value {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .step-item {
                padding: 1.25rem;
            }
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --brand: #2563eb;
            --brand-light: #3b82f6;
            --brand-dark: #1e40af;
            --accent: #f59e0b;
            --bg: #f1f5f9;
            --surface: #ffffff;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius-sm: 10px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 4px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
            --sidebar-w: 260px;
            --transition: all 0.25s ease;
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ========== 容器 ========== */
        .container-page {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ========== 移动端顶部栏 ========== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: #0f172a;
            align-items: center;
            padding: 0 20px;
            z-index: 60;
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.3);
            gap: 12px;
        }
        .mobile-menu-btn {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #e2e8f0;
            font-size: 18px;
            background: rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .mobile-menu-btn:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        .mobile-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-weight: 700;
            font-size: 17px;
        }
        .mobile-logo-icon {
            width: 30px;
            height: 30px;
            border-radius: 9px;
            background: linear-gradient(135deg, var(--brand), var(--brand-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #fff;
            font-weight: 700;
        }
        .mobile-contact {
            margin-left: auto;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: #94a3b8;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: var(--transition);
        }
        .mobile-contact:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
        }

        /* ========== 侧边栏 ========== */
        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: var(--sidebar-w);
            background: #0f172a;
            z-index: 55;
            display: flex;
            flex-direction: column;
            padding: 28px 18px 20px;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 10px 26px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 22px;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 13px;
            background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            font-weight: 800;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
            flex-shrink: 0;
        }
        .brand-text {
            color: #fff;
            font-size: 19px;
            font-weight: 800;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
            overflow-y: auto;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 12px;
            color: #94a3b8;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            flex-shrink: 0;
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #e2e8f0;
        }
        .nav-link.active {
            background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
            color: #fff;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
        }
        .nav-link.active::before {
            content: '';
            position: absolute;
            left: -18px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            border-radius: 0 4px 4px 0;
            background: var(--accent);
        }
        .sidebar-footer {
            padding: 18px 10px 4px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 16px;
        }
        .sidebar-domain {
            color: #64748b;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
        }
        .sidebar-footer p {
            color: #475569;
            font-size: 12px;
            margin-top: 4px;
        }

        /* ========== 遮罩层 ========== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.5);
            z-index: 54;
            backdrop-filter: blur(2px);
        }

        /* ========== 主内容 ========== */
        .main-content {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ========== Banner ========== */
        .banner {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .banner-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            transform: scale(1.02);
        }
        .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 23, 42, 0.92) 0%, rgba(15, 23, 42, 0.75) 45%, rgba(15, 23, 42, 0.45) 100%);
        }
        .banner-content {
            position: relative;
            z-index: 2;
            padding: 80px 32px;
            max-width: 100%;
            width: 100%;
        }
        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: #e2e8f0;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            backdrop-filter: blur(6px);
            margin-bottom: 22px;
        }
        .banner-tag i {
            color: var(--accent);
        }
        .banner-content h1 {
            color: #fff;
            font-size: 52px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
        }
        .banner-desc {
            color: rgba(226, 232, 240, 0.85);
            font-size: 17px;
            line-height: 1.8;
            max-width: 620px;
            margin-bottom: 32px;
        }
        .banner-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            line-height: 1.4;
            cursor: pointer;
            user-select: none;
            border: 1px solid transparent;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.35);
            outline-offset: 2px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
            color: #fff;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-light {
            background: #fff;
            color: #0f172a;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
        }
        .btn-light:hover {
            transform: translateY(-2px);
            background: #f8fafc;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }
        .btn-ghost-light {
            background: transparent;
            color: #e2e8f0;
            border-color: rgba(255, 255, 255, 0.35);
        }
        .btn-ghost-light:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .btn-lg {
            padding: 15px 36px;
            font-size: 16px;
        }

        /* ========== 通用区块 ========== */
        .section {
            padding: 84px 0;
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 52px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(37, 99, 235, 0.08);
            color: var(--brand);
            font-size: 13px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
            letter-spacing: 0.03em;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.7;
        }

        /* ========== 卡片 ========== */
        .card {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, 0.22);
        }
        .card-cover {
            position: relative;
            height: 190px;
            overflow: hidden;
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card:hover .card-cover img {
            transform: scale(1.05);
        }
        .card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0) 55%, rgba(15, 23, 42, 0.45) 100%);
        }
        .card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            color: var(--brand);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }
        .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand);
            transition: var(--transition);
        }
        .card-link:hover {
            gap: 12px;
            color: var(--brand-dark);
        }

        /* ========== 数据统计 ========== */
        .section-stats {
            background: #0f172a;
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }
        .section-stats::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .stats-grid {
            position: relative;
            z-index: 2;
        }
        .stat-item {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.12);
        }
        .stat-num {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .stat-num span {
            color: var(--accent);
        }
        .stat-label {
            margin-top: 6px;
            color: #94a3b8;
            font-size: 14px;
            font-weight: 500;
        }

        /* ========== 资讯列表 ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 920px;
            margin: 0 auto;
        }
        .news-item {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 22px 26px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.2);
            transform: translateX(4px);
        }
        .news-date {
            flex-shrink: 0;
            background: rgba(37, 99, 235, 0.06);
            border-radius: var(--radius-sm);
            padding: 8px 14px;
            text-align: center;
            min-width: 74px;
        }
        .news-date .date-day {
            font-size: 22px;
            font-weight: 800;
            color: var(--brand);
            line-height: 1.2;
        }
        .news-date .date-month {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 600;
        }
        .news-content {
            flex: 1;
        }
        .news-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
            transition: var(--transition);
        }
        .news-title:hover {
            color: var(--brand);
        }
        .news-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== 观赛指南 ========== */
        .section-guide {
            background: #fff;
        }
        .step-item {
            text-align: center;
            padding: 36px 28px;
            border-radius: var(--radius-lg);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(37, 99, 235, 0.25);
        }
        .step-num {
            width: 52px;
            height: 52px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand), var(--brand-dark));
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
        }
        .step-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
        .step-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.22);
            box-shadow: var(--shadow-md);
        }
        .faq-item summary {
            padding: 20px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 14px;
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::before {
            content: '\f059';
            font-family: 'Font Awesome 6 Free';
            font-weight: 400;
            color: var(--brand);
            font-size: 18px;
            flex-shrink: 0;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--text-muted);
            margin-left: auto;
            transition: var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--brand);
        }
        .faq-item .faq-answer {
            padding: 0 26px 22px 58px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ========== CTA ========== */
        .section-cta {
            padding: 60px 0 88px;
        }
        .cta-box {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            border-radius: var(--radius-lg);
            padding: 64px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.25) 0%, transparent 70%);
        }
        .cta-box h2 {
            color: #fff;
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-box p {
            color: #94a3b8;
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 28px;
            position: relative;
        }

        /* ========== 页脚 ========== */
        .footer {
            background: #0f172a;
            padding: 56px 0 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, #3b82f6, #1e40af);
            color: #fff;
            font-size: 17px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .footer-logo-text {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }
        .footer-desc {
            color: #94a3b8;
            font-size: 14px;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-title {
            color: #e2e8f0;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a,
        .footer-links span {
            color: #94a3b8;
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 36px;
            padding-top: 24px;
            text-align: center;
            color: #64748b;
            font-size: 13px;
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1023px) {
            .mobile-topbar {
                display: flex;
            }
            .sidebar {
                transform: translateX(-100%);
                transition: transform 0.3s ease;
                box-shadow: 4px 0 24px rgba(0, 0, 0, 0.3);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.show {
                display: block;
            }
            .main-content {
                margin-left: 0;
                padding-top: 60px;
            }
            .banner-content {
                padding: 60px 24px;
            }
            .banner-content h1 {
                font-size: 36px;
            }
            .section {
                padding: 56px 0;
            }
            .section-head h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 767px) {
            .container-page {
                padding: 0 20px;
            }
            .banner {
                min-height: 360px;
            }
            .banner-content h1 {
                font-size: 30px;
            }
            .banner-desc {
                font-size: 15px;
            }
            .banner-actions .btn {
                width: 100%;
            }
            .section {
                padding: 44px 0;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .stat-num {
                font-size: 32px;
            }
            .news-item {
                flex-direction: column;
                padding: 18px;
            }
            .news-date {
                align-self: flex-start;
            }
            .cta-box {
                padding: 40px 20px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .footer {
                padding: 40px 0 24px;
            }
            .footer-copyright {
                flex-direction: column;
                gap: 6px;
            }
        }

        @media (max-width: 520px) {
            .container-page {
                padding: 0 16px;
            }
            .banner-content h1 {
                font-size: 26px;
            }
            .card-cover {
                height: 160px;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .step-item {
                padding: 24px 18px;
            }
            .faq-item summary {
                padding: 16px 18px;
                font-size: 15px;
                flex-wrap: wrap;
            }
            .faq-item .faq-answer {
                padding: 0 18px 18px 48px;
                font-size: 14px;
            }
        }

        /* ========== 动效辅助 ========== */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }

/* roulang page: article */
:root {
            --brand-600: #2563eb;
            --brand-500: #3b82f6;
            --brand-100: #dbeafe;
            --brand-50: #eff6ff;
            --accent: #f59e0b;
            --sidebar-width: 268px;
            --text-main: #0f172a;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --surface: #ffffff;
            --bg-soft: #f1f5f9;
            --radius: 1rem;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 6px 16px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
        }

        * {
            box-sizing: border-box;
        }

        html,
        body {
            margin: 0;
            padding: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg-soft);
            color: var(--text-main);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }

        input,
        textarea {
            font-family: inherit;
        }

        .app-shell {
            min-height: 100vh;
            display: flex;
            background: var(--bg-soft);
        }

        .sidebar {
            width: var(--sidebar-width);
            background: #0f172a;
            position: fixed;
            top: 0;
            bottom: 0;
            left: 0;
            z-index: 50;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            transition: transform 0.3s ease;
        }

        .sidebar-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
            padding: 28px 20px;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 8px;
            margin-bottom: 36px;
        }

        .sidebar-brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, #2563eb, #06b6d4);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            box-shadow: 0 6px 16px rgba(37, 99, 235, 0.4);
        }

        .sidebar-brand-text {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 12px;
            color: #94a3b8;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.2s ease;
            position: relative;
        }

        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 15px;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link.active {
            color: #fff;
            background: rgba(37, 99, 235, 0.18);
            box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.25);
        }

        .nav-link.active::before {
            content: '';
            position: absolute;
            left: -8px;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 22px;
            border-radius: 3px;
            background: #3b82f6;
        }

        .sidebar-card {
            margin-top: 24px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            padding: 20px 16px;
            text-align: center;
        }

        .sidebar-card p {
            color: #cbd5e1;
            font-size: 13px;
            margin: 0 0 12px;
        }

        .sidebar-card-btn {
            display: inline-block;
            padding: 10px 18px;
            background: #2563eb;
            color: #fff;
            border-radius: 10px;
            font-size: 13px;
            font-weight: 600;
            transition: all 0.2s;
        }

        .sidebar-card-btn:hover {
            background: #1d4ed8;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
        }

        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 40;
            background: rgba(15, 23, 42, 0.98);
            backdrop-filter: blur(8px);
            padding: 0 20px;
            height: 60px;
            align-items: center;
            justify-content: space-between;
        }

        .mobile-menu-btn {
            color: #fff;
            font-size: 20px;
            padding: 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }

        .mobile-menu-btn:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .mobile-brand-icon {
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: linear-gradient(135deg, #2563eb, #06b6d4);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 800;
        }

        .mobile-brand-text {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.5);
            z-index: 45;
            opacity: 0;
            transition: opacity 0.3s ease;
            pointer-events: none;
        }

        .sidebar-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }

        .container-page {
            width: 100%;
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 28px;
        }

        .article-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 64px 0 52px;
            color: #fff;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 23, 42, 0.92) 0%, rgba(15, 23, 42, 0.72) 55%, rgba(37, 99, 235, 0.45) 100%);
        }

        .article-hero-content {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 18px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            transition: color 0.2s;
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb i {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.4);
        }

        .article-hero-cat {
            display: inline-block;
            background: rgba(37, 99, 235, 0.2);
            border: 1px solid rgba(96, 165, 250, 0.4);
            color: #bfdbfe;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .article-hero-title {
            font-size: 34px;
            line-height: 1.35;
            font-weight: 800;
            margin: 0 0 14px;
            max-width: 800px;
        }

        .article-hero-desc {
            color: rgba(255, 255, 255, 0.8);
            font-size: 15px;
            line-height: 1.7;
            max-width: 680px;
            margin: 0;
        }

        .article-section {
            padding: 48px 0 20px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 36px;
            align-items: start;
        }

        .article-main-card {
            background: var(--surface);
            border-radius: 20px;
            box-shadow: var(--shadow-md);
            padding: 40px 44px;
            border: 1px solid var(--border);
        }

        .article-meta-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-bottom: 20px;
            margin-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }

        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 13px;
        }

        .article-meta-item i {
            color: var(--brand-600);
            font-size: 14px;
        }

        .article-cover-img {
            border-radius: 16px;
            margin-bottom: 28px;
            box-shadow: var(--shadow-md);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 16 / 7;
        }

        .article-content {
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.9;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 2rem 0 1rem;
            padding-left: 1rem;
            border-left: 4px solid var(--brand-600);
            color: #0f172a;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin: 1.75rem 0 0.9rem;
            color: #1e293b;
        }

        .article-content p {
            margin: 1.25rem 0;
            color: #334155;
        }

        .article-content ul {
            list-style: disc;
            padding-left: 1.5rem;
            margin: 1rem 0;
            color: #334155;
        }

        .article-content ol {
            list-style: decimal;
            padding-left: 1.5rem;
            margin: 1rem 0;
            color: #334155;
        }

        .article-content li {
            margin: 0.4rem 0;
        }

        .article-content img {
            border-radius: 0.75rem;
            margin: 1.5rem 0;
            box-shadow: var(--shadow-md);
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: #fffbeb;
            padding: 1rem 1.25rem;
            border-radius: 0 0.75rem 0.75rem 0;
            margin: 1.5rem 0;
            color: #78350f;
        }

        .article-content a {
            color: var(--brand-600);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-content a:hover {
            color: #1d4ed8;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            border-radius: 0.75rem;
            overflow: hidden;
        }

        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 12px 16px;
            text-align: left;
            font-size: 14px;
        }

        .article-content table th {
            background: var(--brand-50);
            font-weight: 700;
            color: #1e293b;
        }

        .article-content strong {
            color: #0f172a;
            font-weight: 700;
        }

        .article-tags-box {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            padding: 24px 0;
            margin-top: 32px;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .article-tag-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 600;
        }

        .badge {
            display: inline-block;
            background: var(--brand-50);
            color: var(--brand-600);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 12px;
            border-radius: 999px;
            transition: all 0.2s;
            border: 1px solid var(--brand-100);
        }

        .badge:hover {
            background: var(--brand-600);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

        .article-aside {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 24px;
        }

        .aside-card {
            background: var(--surface);
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
        }

        .aside-card-title {
            font-size: 16px;
            font-weight: 700;
            margin: 0 0 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .aside-card-title::after {
            content: '';
            flex: 1;
            height: 2px;
            background: linear-gradient(90deg, var(--brand-600), transparent);
            border-radius: 2px;
        }

        .aside-cat-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: 10px;
            background: var(--bg-soft);
            color: #334155;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s ease;
        }

        .aside-cat-link:hover {
            background: var(--brand-600);
            color: #fff;
            transform: translateX(4px);
        }

        .aside-cat-link i {
            width: 18px;
            text-align: center;
        }

        .aside-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .aside-list li {
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 14px;
        }

        .aside-list li:last-child {
            border-bottom: none;
        }

        .aside-list a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: #334155;
            line-height: 1.5;
            transition: color 0.2s;
        }

        .aside-list a:hover {
            color: var(--brand-600);
        }

        .aside-list i {
            color: var(--brand-600);
            font-size: 12px;
            margin-top: 5px;
        }

        .aside-mini-cta {
            background: linear-gradient(135deg, #1d4ed8, #06b6d4);
            border-radius: 16px;
            padding: 24px;
            color: #fff;
            text-align: center;
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
        }

        .aside-mini-cta h3 {
            margin: 0 0 8px;
            font-size: 16px;
            font-weight: 700;
        }

        .aside-mini-cta p {
            margin: 0 0 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.6;
        }

        .aside-mini-cta a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            color: #1d4ed8;
            padding: 10px 18px;
            border-radius: 10px;
            font-size: 13px;
            font-weight: 700;
            transition: all 0.2s;
        }

        .aside-mini-cta a:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
        }

        .related-section {
            padding: 32px 0 48px;
        }

        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }

        .section-header h2 {
            font-size: 22px;
            font-weight: 800;
            margin: 0;
        }

        .section-header a {
            color: var(--brand-600);
            font-size: 14px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.2s;
        }

        .section-header a:hover {
            gap: 10px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--surface);
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all 0.3s ease;
        }

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

        .related-card-img {
            display: block;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
        }

        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .related-card:hover .related-card-img img {
            transform: scale(1.05);
        }

        .related-card-body {
            padding: 16px 18px 20px;
        }

        .related-card-cat {
            display: inline-block;
            background: var(--brand-50);
            color: var(--brand-600);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            margin-bottom: 8px;
        }

        .related-card h3 {
            font-size: 15px;
            line-height: 1.5;
            font-weight: 700;
            margin: 0 0 8px;
        }

        .related-card h3 a {
            color: var(--text-main);
            transition: color 0.2s;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card h3 a:hover {
            color: var(--brand-600);
        }

        .related-card p {
            color: var(--text-muted);
            font-size: 13px;
            line-height: 1.6;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cta-section {
            padding: 16px 0 56px;
        }

        .cta-card {
            background: linear-gradient(120deg, #0f172a, #1e293b);
            border-radius: 20px;
            padding: 40px 44px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-card::after {
            content: '';
            position: absolute;
            right: -40px;
            top: -40px;
            width: 200px;
            height: 200px;
            background: rgba(37, 99, 235, 0.15);
            border-radius: 50%;
        }

        .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-content h2 {
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            margin: 0 0 8px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.7);
            margin: 0;
            font-size: 14px;
        }

        .cta-buttons {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
            position: relative;
            z-index: 1;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 22px;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.25s ease;
            border: none;
        }

        .btn-primary {
            background: var(--brand-600);
            color: #fff;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
        }

        .btn-primary:hover {
            background: #1d4ed8;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
        }

        .btn-ghost-light {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        .not-found-box {
            background: var(--surface);
            border-radius: 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 60px 40px;
            text-align: center;
            max-width: 640px;
            margin: 48px auto;
        }

        .not-found-icon {
            font-size: 48px;
            color: var(--brand-600);
            margin-bottom: 16px;
            display: block;
        }

        .not-found-box h2 {
            font-size: 24px;
            font-weight: 800;
            margin: 0 0 12px;
        }

        .not-found-box p {
            color: var(--text-muted);
            margin: 0 0 24px;
        }

        .footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 26px;
            margin-top: auto;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, #2563eb, #06b6d4);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
        }

        .footer-logo-text {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }

        .footer-desc {
            color: #64748b;
            font-size: 14px;
            line-height: 1.7;
            max-width: 340px;
            margin: 0;
        }

        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin: 0 0 16px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a,
        .footer-links span {
            color: #94a3b8;
            font-size: 14px;
            transition: color 0.2s;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 40px;
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #64748b;
        }

        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .sidebar-overlay {
                display: block;
            }

            .main-content {
                margin-left: 0;
            }

            .mobile-header {
                display: flex;
            }

            .article-layout {
                grid-template-columns: 1fr;
            }

            .article-aside {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }

            .aside-card {
                flex: 1;
                min-width: 240px;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .container-page {
                padding: 0 20px;
            }

            .article-main-card {
                padding: 28px 22px;
            }

            .article-hero-title {
                font-size: 26px;
            }

            .article-hero-desc {
                font-size: 14px;
            }

            .cta-card {
                flex-direction: column;
                padding: 30px 24px;
                align-items: flex-start;
            }

            .cta-buttons {
                width: 100%;
            }

            .cta-buttons .btn {
                flex: 1;
                justify-content: center;
            }

            .article-cover-img {
                aspect-ratio: 16 / 9;
            }
        }

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

            .article-meta-row {
                gap: 10px;
            }

            .article-meta-item {
                font-size: 12px;
            }

            .article-hero {
                padding: 44px 0 40px;
            }

            .article-hero-title {
                font-size: 22px;
            }

            .article-section {
                padding: 32px 0 16px;
            }

            .article-main-card {
                padding: 22px 16px;
                border-radius: 16px;
            }

            .aside-card {
                min-width: 100%;
            }

            .footer {
                padding: 40px 0 20px;
            }

            .cta-section {
                padding: 8px 0 40px;
            }
        }

/* roulang page: category2 */
:root {
            --brand: #10b981;
            --brand-dark: #059669;
            --brand-deep: #064e3b;
            --accent: #f59e0b;
            --bg: #f8fafc;
            --surface: #ffffff;
            --text: #1e293b;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.10);
            --sidebar-w: 260px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }

        input,
        textarea {
            font-family: inherit;
            outline: none;
        }

        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            width: var(--sidebar-w);
            height: 100vh;
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            background: linear-gradient(180deg, #0f1f1c 0%, #0b1520 100%);
            padding: 28px 20px;
            display: flex;
            flex-direction: column;
            z-index: 100;
            border-right: 1px solid rgba(255, 255, 255, 0.04);
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 8px 28px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 24px;
        }

        .sidebar-logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--brand) 0%, #34d399 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 4px 16px rgba(16, 185, 129, 0.35);
            flex-shrink: 0;
        }

        .sidebar-logo-text {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }

        .sidebar-logo-sub {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.05em;
        }

        .sidebar-nav {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 13px 14px;
            border-radius: 12px;
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 15px;
            opacity: 0.85;
        }

        .nav-link:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            transform: translateX(2px);
        }

        .nav-link.active {
            background: linear-gradient(135deg, rgba(16, 185, 129, 0.18) 0%, rgba(16, 185, 129, 0.08) 100%);
            color: #34d399;
            border-color: rgba(16, 185, 129, 0.2);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--brand);
        }

        .sidebar-foot {
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 11px;
            color: rgba(255, 255, 255, 0.3);
            text-align: center;
            line-height: 1.6;
        }

        .main-wrapper {
            flex: 1;
            margin-left: var(--sidebar-w);
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .mobile-topbar {
            position: sticky;
            top: 0;
            z-index: 90;
            display: none;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
        }

        .mobile-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .mobile-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand) 0%, #34d399 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 16px;
        }

        .mobile-logo-text {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
        }

        .mobile-menu-btn {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text);
            font-size: 18px;
            transition: var(--transition);
        }

        .mobile-menu-btn:hover {
            background: var(--brand-50, #ecfdf5);
            color: var(--brand);
            border-color: rgba(16, 185, 129, 0.3);
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 280px;
            background: linear-gradient(180deg, #0f1f1c 0%, #0b1520 100%);
            z-index: 200;
            transform: translateX(-100%);
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 24px 18px;
            display: none;
            flex-direction: column;
            overflow-y: auto;
        }

        .mobile-drawer.open {
            transform: translateX(0);
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.6);
            z-index: 150;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            backdrop-filter: blur(2px);
        }

        .drawer-overlay.open {
            opacity: 1;
            visibility: visible;
        }

        .drawer-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: var(--transition);
        }

        .drawer-close:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }

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

        .hero-banner {
            position: relative;
            padding: 100px 0 90px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(6, 22, 18, 0.92) 0%, rgba(6, 22, 18, 0.72) 40%, rgba(6, 22, 18, 0.35) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 100px;
            background: rgba(16, 185, 129, 0.15);
            border: 1px solid rgba(16, 185, 129, 0.3);
            color: #6ee7b7;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: 20px;
            backdrop-filter: blur(8px);
        }

        .hero-banner h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }

        .hero-banner p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 30px;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--brand) 0%, #059669 100%);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 8px 24px rgba(16, 185, 129, 0.3);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(16, 185, 129, 0.4);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(16, 185, 129, 0.4);
            outline-offset: 2px;
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
        }

        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-head {
            max-width: 680px;
            margin-bottom: 48px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            color: var(--brand);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.25;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.8;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .intro-media {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .intro-media img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .intro-media:hover img {
            transform: scale(1.03);
        }

        .intro-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(6, 78, 59, 0.2) 100%);
            pointer-events: none;
        }

        .intro-content h3 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 16px;
            color: var(--text);
        }

        .intro-content p {
            font-size: 15px;
            color: var(--muted);
            margin-bottom: 20px;
            line-height: 1.9;
        }

        .intro-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .intro-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text);
            font-weight: 500;
        }

        .intro-list li i {
            color: var(--brand);
            margin-top: 3px;
            font-size: 15px;
        }

        .cards-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .card-item {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 28px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .card-item::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--brand), #34d399);
            opacity: 0;
            transition: var(--transition);
        }

        .card-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(16, 185, 129, 0.25);
        }

        .card-item:hover::before {
            opacity: 1;
        }

        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(16, 185, 129, 0.06));
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
        }

        .card-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .card-item p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }

        .card-tag {
            position: absolute;
            top: 18px;
            right: 18px;
            font-size: 11px;
            font-weight: 600;
            color: var(--brand);
            background: rgba(16, 185, 129, 0.08);
            padding: 4px 10px;
            border-radius: 100px;
        }

        .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .article-card {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(16, 185, 129, 0.2);
        }

        .article-cover {
            height: 190px;
            overflow: hidden;
            position: relative;
        }

        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .article-card:hover .article-cover img {
            transform: scale(1.05);
        }

        .article-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: var(--muted);
            margin-bottom: 10px;
        }

        .article-meta .badge {
            background: rgba(16, 185, 129, 0.1);
            color: var(--brand-dark);
            padding: 3px 10px;
            border-radius: 100px;
            font-weight: 600;
        }

        .article-body h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 10px;
            color: var(--text);
        }

        .article-body p {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.7;
            flex: 1;
        }

        .article-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand);
        }

        .article-link:hover {
            gap: 10px;
            color: var(--brand-dark);
        }

        .stats-section {
            background: linear-gradient(135deg, #064e3b 0%, #065f46 50%, #0f766e 100%);
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 2;
        }

        .stat-item {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }

        .stat-num {
            font-size: 38px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 4px;
            letter-spacing: -0.02em;
        }

        .stat-num span {
            color: #6ee7b7;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            font-weight: 500;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-item {
            text-align: center;
            padding: 32px 18px;
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
        }

        .step-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(16, 185, 129, 0.2);
        }

        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand), #34d399);
            color: #fff;
            font-weight: 700;
            font-size: 17px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 6px 18px rgba(16, 185, 129, 0.25);
        }

        .step-item h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .step-item p {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.6;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(16, 185, 129, 0.25);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--brand-dark);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: rgba(16, 185, 129, 0.08);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            flex-shrink: 0;
            transition: transform 0.4s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: 14px;
            color: var(--muted);
            line-height: 1.9;
        }

        .cta-section {
            padding: 80px 0;
            position: relative;
            background-size: cover;
            background-position: center;
        }

        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(6, 78, 59, 0.92) 0%, rgba(5, 60, 50, 0.85) 100%);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 620px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .cta-content p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 30px;
            line-height: 1.8;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 440px;
            margin: 0 auto 16px;
            flex-wrap: wrap;
        }

        .cta-input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: 14px;
            transition: var(--transition);
            backdrop-filter: blur(8px);
        }

        .cta-input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .cta-input:focus {
            border-color: rgba(16, 185, 129, 0.6);
            background: rgba(255, 255, 255, 0.18);
            outline: none;
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
        }

        .cta-note {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer {
            background: #0b1520;
            padding: 60px 0 0;
            color: rgba(255, 255, 255, 0.6);
            margin-top: auto;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand), #34d399);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 16px;
        }

        .footer-logo-text {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            max-width: 400px;
            margin-bottom: 20px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: #34d399;
            padding-left: 4px;
        }

        .footer-links span {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom {
            margin-top: 48px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.3);
        }

        .focus-visible {
            outline: 3px solid rgba(16, 185, 129, 0.4);
            outline-offset: 2px;
        }

        @media (max-width: 1023px) {
            .sidebar {
                display: none;
            }
            .mobile-topbar {
                display: flex;
            }
            .mobile-drawer {
                display: flex;
            }
            .main-wrapper {
                margin-left: 0;
            }
            .container-page {
                padding: 0 20px;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .knowledge-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 767px) {
            .hero-banner {
                padding: 60px 0 56px;
            }
            .hero-banner h1 {
                font-size: 28px;
            }
            .hero-banner p {
                font-size: 14px;
            }
            .section {
                padding: 56px 0;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .knowledge-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-section {
                padding: 50px 0;
            }
            .cta-content h2 {
                font-size: 24px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-input {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .container-page {
                padding: 0 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-ghost {
                justify-content: center;
                width: 100%;
            }
        }

/* roulang page: category3 */
:root {
            --brand: #2563eb;
            --brand-dark: #1d4ed8;
            --brand-light: #eff6ff;
            --accent: #f97316;
            --slate-900: #0f172a;
            --slate-800: #1e293b;
            --slate-700: #334155;
            --slate-600: #475569;
            --slate-500: #64748b;
            --slate-400: #94a3b8;
            --slate-300: #cbd5e1;
            --slate-200: #e2e8f0;
            --slate-100: #f1f5f9;
            --bg-main: #f8fafc;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
            --shadow-md: 0 4px 6px rgba(15, 23, 42, .07);
            --shadow-lg: 0 10px 30px rgba(15, 23, 42, .10);
            --shadow-brand: 0 4px 20px rgba(37, 99, 235, .25);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg-main);
            color: var(--slate-800);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

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

        button,
        input {
            font-family: inherit;
        }

        .container-page {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ====== App Shell ====== */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            width: 260px;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            background: linear-gradient(180deg, var(--slate-900) 0%, #0b1120 100%);
            z-index: 60;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            transition: transform .35s cubic-bezier(.4, 0, .2, 1);
            overflow-y: auto;
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 12px;
            margin-bottom: 28px;
        }

        .sidebar-logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            box-shadow: 0 6px 18px rgba(37, 99, 235, .35);
            flex-shrink: 0;
        }

        .sidebar-logo-text {
            color: #fff;
            font-size: 19px;
            font-weight: 700;
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: 12px;
            color: var(--slate-400);
            font-size: 15px;
            font-weight: 500;
            transition: all .25s ease;
            border: 1px solid transparent;
        }

        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 15px;
        }

        .sidebar-nav .nav-link:hover {
            background: rgba(255, 255, 255, .06);
            color: var(--slate-200);
        }

        .sidebar-nav .nav-link.active {
            background: linear-gradient(135deg, #2563eb, #1e40af);
            color: #fff;
            box-shadow: 0 4px 18px rgba(37, 99, 235, .35);
            border-color: rgba(255, 255, 255, .08);
        }

        .sidebar-footer {
            margin-top: 20px;
            padding: 12px 14px;
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .07);
            border-radius: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--slate-400);
            font-size: 13px;
        }

        .sidebar-footer i {
            color: var(--accent);
            font-size: 16px;
        }

        .main-wrapper {
            flex: 1;
            margin-left: 260px;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(15, 23, 42, .92);
            backdrop-filter: blur(10px);
            padding: 14px 20px;
            align-items: center;
            gap: 14px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .mobile-header .menu-btn {
            width: 38px;
            height: 38px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            cursor: pointer;
            transition: background .2s;
        }

        .mobile-header .menu-btn:hover {
            background: rgba(255, 255, 255, .16);
        }

        .mobile-header .mobile-logo {
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            letter-spacing: 1px;
        }

        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, .55);
            z-index: 55;
            opacity: 0;
            transition: opacity .3s;
        }

        .mobile-overlay.show {
            opacity: 1;
        }

        /* ====== Hero ====== */
        .page-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 100px 0;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 23, 42, .88) 0%, rgba(15, 23, 42, .68) 55%, rgba(37, 99, 235, .45) 100%);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            backdrop-filter: blur(6px);
            color: #fff;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 22px;
        }

        .hero-badge i {
            color: #fbbf24;
        }

        .hero-title {
            color: #fff;
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 1px;
            margin-bottom: 18px;
            max-width: 720px;
        }

        .hero-title span {
            color: #60a5fa;
        }

        .hero-desc {
            color: rgba(255, 255, 255, .85);
            font-size: 17px;
            line-height: 1.7;
            max-width: 620px;
            margin-bottom: 34px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ====== Buttons ====== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 13px 26px;
            border-radius: 12px;
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 20px rgba(37, 99, 235, .35);
            transition: all .25s ease;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(37, 99, 235, .45);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(59, 130, 246, .5);
            outline-offset: 2px;
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .25);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 13px 26px;
            border-radius: 12px;
            cursor: pointer;
            backdrop-filter: blur(6px);
            transition: all .25s ease;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, .2);
            border-color: rgba(255, 255, 255, .4);
        }

        .btn-ghost:focus-visible {
            outline: 3px solid rgba(255, 255, 255, .4);
            outline-offset: 2px;
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #f97316, #ea580c);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 13px 26px;
            border-radius: 12px;
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 20px rgba(249, 115, 22, .3);
            transition: all .25s ease;
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(249, 115, 22, .4);
        }

        /* ====== Section ====== */
        .section {
            padding: 90px 0;
        }

        .section-light {
            background: #fff;
        }

        .section-dark {
            background: linear-gradient(135deg, var(--slate-900) 0%, #0f172a 50%, #111c34 100%);
            color: #fff;
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            background: var(--brand-light);
            color: var(--brand);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 50px;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .section-dark .section-tag {
            background: rgba(255, 255, 255, .1);
            color: #93c5fd;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--slate-900);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: .5px;
        }

        .section-dark .section-title {
            color: #fff;
        }

        .section-desc {
            font-size: 16px;
            color: var(--slate-500);
            line-height: 1.7;
        }

        .section-dark .section-desc {
            color: var(--slate-400);
        }

        /* ====== Guide Cards ====== */
        .guide-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--slate-100);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
        }

        .guide-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #3b82f6, #60a5fa);
            opacity: 0;
            transition: opacity .3s;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--slate-200);
        }

        .guide-card:hover::before {
            opacity: 1;
        }

        .guide-card-icon {
            width: 62px;
            height: 62px;
            border-radius: 18px;
            background: var(--brand-light);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin: 0 auto 20px;
            transition: all .3s;
        }

        .guide-card:hover .guide-card-icon {
            background: var(--brand);
            color: #fff;
            box-shadow: var(--shadow-brand);
        }

        .guide-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--slate-900);
            margin-bottom: 10px;
        }

        .guide-card p {
            font-size: 14px;
            color: var(--slate-500);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .guide-card .guide-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--brand);
            font-size: 14px;
            font-weight: 600;
            transition: gap .2s;
        }

        .guide-card .guide-link:hover {
            gap: 10px;
        }

        /* ====== Steps ====== */
        .steps-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .step-item {
            position: relative;
            text-align: center;
            padding: 32px 20px;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--slate-100);
            box-shadow: var(--shadow-sm);
            transition: all .3s;
        }

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

        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: var(--shadow-brand);
        }

        .step-item h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--slate-900);
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 13px;
            color: var(--slate-500);
            line-height: 1.6;
        }

        .step-arrow {
            position: absolute;
            top: 50%;
            right: -22px;
            transform: translateY(-50%);
            color: var(--slate-300);
            font-size: 18px;
            z-index: 2;
        }

        /* ====== Feature Cards ====== */
        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--slate-100);
            padding: 32px 26px;
            display: flex;
            gap: 18px;
            align-items: flex-start;
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--slate-200);
        }

        .feature-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
        }

        .feature-icon.blue {
            background: linear-gradient(135deg, #3b82f6, #2563eb);
            box-shadow: 0 4px 14px rgba(37, 99, 235, .3);
        }

        .feature-icon.orange {
            background: linear-gradient(135deg, #f97316, #ea580c);
            box-shadow: 0 4px 14px rgba(249, 115, 22, .3);
        }

        .feature-icon.green {
            background: linear-gradient(135deg, #10b981, #059669);
            box-shadow: 0 4px 14px rgba(16, 185, 129, .3);
        }

        .feature-icon.purple {
            background: linear-gradient(135deg, #8b5cf6, #7c3aed);
            box-shadow: 0 4px 14px rgba(139, 92, 246, .3);
        }

        .feature-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--slate-900);
            margin-bottom: 6px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--slate-500);
            line-height: 1.7;
        }

        /* ====== Stats ====== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }

        .stat-item {
            text-align: center;
            padding: 36px 20px;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-lg);
            transition: all .3s;
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-4px);
        }

        .stat-num {
            font-size: 42px;
            font-weight: 800;
            color: #60a5fa;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-item h5 {
            font-size: 15px;
            color: #e2e8f0;
            font-weight: 500;
        }

        .stat-item p {
            font-size: 13px;
            color: var(--slate-400);
            margin-top: 4px;
        }

        /* ====== Tips ====== */
        .tips-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .tip-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--slate-100);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all .3s;
        }

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

        .tip-img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .tip-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s;
        }

        .tip-card:hover .tip-img img {
            transform: scale(1.05);
        }

        .tip-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(15, 23, 42, .65));
        }

        .tip-img .tip-badge {
            position: absolute;
            bottom: 14px;
            left: 16px;
            z-index: 2;
            background: rgba(255, 255, 255, .15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, .25);
            color: #fff;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
        }

        .tip-body {
            padding: 24px;
        }

        .tip-body h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--slate-900);
            margin-bottom: 10px;
        }

        .tip-body p {
            font-size: 14px;
            color: var(--slate-500);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .tip-body .tip-link {
            color: var(--brand);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .2s;
        }

        .tip-body .tip-link:hover {
            gap: 10px;
        }

        /* ====== FAQ ====== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--slate-100);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow .3s;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--slate-900);
            text-align: left;
            transition: color .2s;
        }

        .faq-question:hover {
            color: var(--brand);
        }

        .faq-question i {
            font-size: 14px;
            color: var(--slate-400);
            flex-shrink: 0;
            transition: transform .3s, color .3s;
        }

        .faq-item.active .faq-question i {
            transform: rotate(45deg);
            color: var(--brand);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s cubic-bezier(.4, 0, .2, 1);
        }

        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: 14px;
            color: var(--slate-500);
            line-height: 1.8;
        }

        /* ====== CTA ====== */
        .cta-section {
            position: relative;
            padding: 90px 0;
            background: linear-gradient(120deg, #0f172a, #1e3a8a);
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: .12;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, .8);
            font-size: 17px;
            line-height: 1.7;
            margin-bottom: 30px;
        }

        .cta-inner .btn-accent {
            font-size: 16px;
            padding: 15px 32px;
        }

        /* ====== Recommend ====== */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .recommend-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--slate-100);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
        }

        .recommend-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--slate-200);
        }

        .recommend-cover {
            height: 170px;
            overflow: hidden;
            position: relative;
        }

        .recommend-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s;
        }

        .recommend-card:hover .recommend-cover img {
            transform: scale(1.05);
        }

        .recommend-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(15, 23, 42, .4));
        }

        .recommend-body {
            padding: 22px 22px 24px;
        }

        .recommend-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            background: var(--brand-light);
            color: var(--brand);
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
        }

        .recommend-body h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--slate-900);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .recommend-body p {
            font-size: 13px;
            color: var(--slate-500);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .recommend-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--slate-400);
        }

        .recommend-meta i {
            font-size: 14px;
        }

        /* ====== Footer ====== */
        .footer {
            background: var(--slate-900);
            color: var(--slate-400);
            padding: 80px 0 30px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 14px rgba(37, 99, 235, .3);
        }

        .footer-logo-text {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 1px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 18px;
            max-width: 360px;
            color: var(--slate-400);
        }

        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--brand);
            border-radius: 4px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links li {
            font-size: 14px;
        }

        .footer-links a {
            color: var(--slate-400);
            transition: color .2s, padding-left .2s;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            margin-top: 50px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, .08);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--slate-500);
        }

        /* ====== Responsive ====== */
        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
                box-shadow: none;
            }

            .sidebar.open {
                transform: translateX(0);
                box-shadow: 20px 0 40px rgba(0, 0, 0, .3);
            }

            .main-wrapper {
                margin-left: 0;
            }

            .mobile-header {
                display: flex;
            }

            .mobile-overlay.show {
                display: block;
            }

            .steps-wrap {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .tips-wrap {
                grid-template-columns: 1fr;
            }

            .recommend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .container-page {
                padding-left: 18px;
                padding-right: 18px;
            }

            .section {
                padding: 60px 0;
            }

            .hero-title {
                font-size: 32px;
            }

            .hero-desc {
                font-size: 15px;
            }

            .section-title {
                font-size: 26px;
            }

            .step-arrow {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .steps-wrap {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stat-num {
                font-size: 32px;
            }

            .recommend-grid {
                grid-template-columns: 1fr;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-primary,
            .btn-ghost {
                justify-content: center;
            }

            .hero-title {
                font-size: 28px;
            }

            .section-title {
                font-size: 23px;
            }

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

            .cta-inner h2 {
                font-size: 26px;
            }

            .guide-card {
                padding: 28px 20px;
            }
        }