/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1668e3;
            --primary-dark: #0d4fb5;
            --primary-light: #e8f0fe;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --bg: #f6f8fc;
            --bg-dark: #0f1c2e;
            --surface: #ffffff;
            --text: #1e293b;
            --text-light: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 20px rgba(15, 30, 50, 0.06);
            --shadow-lg: 0 16px 44px rgba(22, 104, 227, 0.14);
            --transition: all 0.3s ease;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

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

        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: var(--primary-dark);
        }

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

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ===== 通用板块 ===== */
        .section {
            padding: 88px 0;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 100px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 14px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
        }

        .section-head .section-tag {
            background: var(--accent-light);
            color: #b45309;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(15, 30, 50, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1.2;
        }

        .site-logo i {
            color: var(--primary);
            font-size: 26px;
        }

        .site-logo:hover {
            color: var(--text);
        }

        .main-nav {
            display: flex;
            align-items: center;
        }

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

        .nav-links a {
            display: block;
            padding: 10px 18px;
            border-radius: 8px;
            color: var(--text);
            font-size: 15px;
            font-weight: 500;
            line-height: 1.4;
            transition: var(--transition);
        }

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

        .nav-links a.active {
            background: var(--primary);
            color: #ffffff;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(22, 104, 227, 0.28);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            color: var(--text);
            font-size: 18px;
            background: var(--bg);
            transition: var(--transition);
        }

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

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            background-color: var(--bg-dark);
            color: #ffffff;
            padding: 100px 0;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 28, 46, 0.92) 0%, rgba(15, 28, 46, 0.72) 45%, rgba(22, 104, 227, 0.45) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }

        .hero-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(8px);
            color: #ffffff;
            font-size: 14px;
            font-weight: 500;
            padding: 6px 18px;
            border-radius: 100px;
            margin-bottom: 22px;
            letter-spacing: 1px;
        }

        .hero h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }

        .hero p.lead {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 36px;
            max-width: 560px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: 12px;
            transition: var(--transition);
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--primary);
            color: #ffffff;
            box-shadow: 0 6px 20px rgba(22, 104, 227, 0.35);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(22, 104, 227, 0.42);
        }

        .btn-outline {
            background: transparent;
            color: #ffffff;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.1);
            color: #ffffff;
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--accent);
            color: #1e293b;
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.3);
        }

        .btn-accent:hover {
            background: #e08c0b;
            color: #1e293b;
            transform: translateY(-2px);
        }

        .hero-stat-row {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.18);
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
        }

        .hero-stat .num {
            font-size: 28px;
            font-weight: 800;
            color: #ffffff;
        }

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

        /* ===== 核心说明 ===== */
        .features {
            background: var(--surface);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 40px 32px;
            transition: var(--transition);
            height: 100%;
        }

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

        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 24px;
            color: var(--primary);
            background: var(--primary-light);
        }

        .feature-card:nth-child(2) .feature-icon {
            background: var(--accent-light);
            color: #d97706;
        }

        .feature-card:nth-child(3) .feature-icon {
            background: #e8f8f0;
            color: #059669;
        }

        .feature-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }

        .feature-card p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-light);
        }

        /* ===== 分类入口 ===== */
        .categories {
            background: var(--bg);
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

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

        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .category-card .card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

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

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

        .category-card .card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 28, 46, 0.05), transparent);
        }

        .category-info {
            padding: 26px 26px 28px;
        }

        .category-info h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .category-info p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-light);
            margin-bottom: 16px;
        }

        .category-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .category-card:hover .category-link {
            gap: 14px;
        }

        /* ===== 登录流程 ===== */
        .steps {
            background: var(--bg-dark);
            color: #ffffff;
            position: relative;
        }

        .steps::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.12;
        }

        .steps .container {
            position: relative;
            z-index: 2;
        }

        .steps .section-tag {
            background: rgba(255, 255, 255, 0.12);
            color: #ffffff;
        }

        .steps .section-head h2 {
            color: #ffffff;
        }

        .steps .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .step-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius);
            padding: 32px 26px;
            backdrop-filter: blur(6px);
            transition: var(--transition);
            text-align: left;
        }

        .step-item:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-4px);
        }

        .step-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--accent);
            display: block;
            margin-bottom: 18px;
            line-height: 1;
            opacity: 0.9;
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #ffffff;
        }

        .step-item p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== 最新资讯 ===== */
        .latest {
            background: var(--surface);
        }

        .latest-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .latest-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 28px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .latest-card:hover {
            background: var(--surface);
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }

        .latest-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 4px;
        }

        .badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 100px;
            line-height: 1.5;
        }

        .latest-meta time {
            font-size: 13px;
            color: var(--text-light);
        }

        .latest-card h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
        }

        .latest-card h3 a {
            color: var(--text);
        }

        .latest-card h3 a:hover {
            color: var(--primary);
        }

        .latest-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        .read-more {
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 4px;
        }

        .empty-state {
            background: var(--bg);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
            padding: 48px;
            text-align: center;
            color: var(--text-light);
            font-size: 15px;
        }

        /* ===== 数据统计 ===== */
        .stats {
            background: var(--bg);
        }

        .stats-wrap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 48px 36px;
        }

        .stat-item {
            text-align: center;
            padding: 16px 8px;
        }

        .stat-num {
            font-size: 44px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            display: block;
            margin-bottom: 8px;
            background: linear-gradient(135deg, var(--primary), #2563eb);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-light);
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq {
            background: var(--surface);
        }

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

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

        .faq-item.active {
            background: var(--surface);
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }

        .faq-question {
            width: 100%;
            padding: 22px 28px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            line-height: 1.5;
        }

        .faq-question i {
            color: var(--primary);
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

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

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

        .faq-answer p {
            padding: 0 28px 22px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-light);
        }

        /* ===== CTA ===== */
        .cta {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            background-color: var(--bg-dark);
            color: #ffffff;
            text-align: center;
            padding: 100px 0;
        }

        .cta::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(15, 28, 46, 0.82);
        }

        .cta .container {
            position: relative;
            z-index: 2;
        }

        .cta h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
            color: #ffffff;
        }

        .cta p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 30px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta .btn {
            font-size: 16px;
            padding: 14px 36px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .site-logo {
            color: #ffffff;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
        }

        .footer-links h4 {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-bottom span {
            margin: 0 8px;
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 42px;
            }

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

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

            .stats-wrap {
                grid-template-columns: repeat(3, 1fr);
                padding: 36px 24px;
            }

            .section {
                padding: 72px 0;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }

            .section-head {
                margin-bottom: 40px;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .hero {
                min-height: 520px;
                padding: 80px 0;
            }

            .hero h1 {
                font-size: 34px;
            }

            .hero p.lead {
                font-size: 16px;
            }

            .hero-stat-row {
                gap: 24px;
                flex-wrap: wrap;
            }

            .features-grid,
            .category-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

            .step-item {
                padding: 24px 20px;
            }

            .stats-wrap {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 32px 20px;
            }

            .stat-item {
                padding: 8px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            /* 移动端导航 */
            .nav-toggle {
                display: flex;
            }

            .main-nav {
                order: 3;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 76px;
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                padding: 16px 24px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 24px rgba(15, 30, 50, 0.08);
            }

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

            .nav-links a {
                padding: 12px 16px;
                border-radius: 10px;
                width: 100%;
            }

            .cta h2 {
                font-size: 28px;
            }

            .cta {
                padding: 72px 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }

            .hero h1 {
                font-size: 28px;
            }

            .hero p.lead {
                font-size: 15px;
            }

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

            .hero-actions .btn {
                justify-content: center;
            }

            .hero-stat-row {
                gap: 18px;
            }

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

            .section-head h2 {
                font-size: 24px;
            }

            .latest-card {
                padding: 20px;
            }

            .faq-question {
                padding: 18px 20px;
                font-size: 15px;
            }

            .faq-answer p {
                padding: 0 20px 18px;
                font-size: 14px;
            }

            .stat-num {
                font-size: 36px;
            }

            .site-logo {
                font-size: 18px;
            }

            .site-logo i {
                font-size: 22px;
            }
        }

        /* ===== 可访问性 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(22, 104, 227, 0.5);
            outline-offset: 2px;
        }

        .btn:focus-visible {
            outline-color: #ffffff;
        }

/* roulang page: article */
:root {
            --primary: #0b3d5c;
            --primary-dark: #072a3f;
            --primary-light: #e8f4fb;
            --accent: #0ea5e9;
            --accent-dark: #0284c7;
            --bg: #f6f9fc;
            --surface: #ffffff;
            --text: #1e293b;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(15, 50, 86, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 50, 86, 0.08);
            --shadow-lg: 0 16px 40px rgba(15, 50, 86, 0.12);
            --transition: all 0.25s ease;
        }

        * {
            box-sizing: border-box;
        }

        html,
        body {
            margin: 0;
            padding: 0;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

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

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 16px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .site-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .site-logo i {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border-radius: 10px;
            font-size: 1rem;
        }

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

        .nav-links a {
            display: inline-block;
            padding: 9px 16px;
            border-radius: 999px;
            font-weight: 600;
            color: var(--text);
            transition: var(--transition);
        }

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

        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            width: 44px;
            height: 44px;
            border-radius: 10px;
            font-size: 1.15rem;
            color: var(--primary);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

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

        .page-banner {
            position: relative;
            background: linear-gradient(120deg, rgba(7, 42, 63, 0.92), rgba(14, 165, 233, 0.78)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            color: #fff;
            padding: 88px 0 72px;
            text-align: center;
        }

        .page-banner .breadcrumb {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 16px;
            font-size: 0.9rem;
        }

        .breadcrumb a {
            color: #fff;
            opacity: 0.85;
            transition: var(--transition);
        }

        .breadcrumb a:hover {
            opacity: 1;
        }

        .page-banner h1 {
            font-size: 2.6rem;
            line-height: 1.2;
            font-weight: 800;
            margin: 0 0 16px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
        }

        .article-banner .banner-meta {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.14);
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.9rem;
        }

        .article-layout {
            padding: 56px 0 64px;
            align-items: flex-start;
        }

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

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
        }

        .meta-date {
            color: var(--muted);
            font-size: 0.92rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .content-body {
            font-size: 1.02rem;
            color: #334155;
        }

        .content-body h2 {
            font-size: 1.7rem;
            margin: 36px 0 16px;
            color: var(--primary);
            line-height: 1.3;
        }

        .content-body h3 {
            font-size: 1.35rem;
            margin: 28px 0 12px;
            color: var(--primary-dark);
            line-height: 1.3;
        }

        .content-body p {
            margin: 0 0 20px;
        }

        .content-body ul,
        .content-body ol {
            margin: 0 0 20px 22px;
        }

        .content-body ul {
            list-style: disc;
        }

        .content-body ol {
            list-style: decimal;
        }

        .content-body li {
            margin-bottom: 8px;
        }

        .content-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--primary-light);
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            color: var(--primary-dark);
        }

        .content-body img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            margin: 24px 0;
        }

        .content-body a {
            color: var(--accent-dark);
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .content-body code {
            background: #f1f5f9;
            padding: 2px 6px;
            border-radius: 6px;
            font-size: 0.9em;
        }

        .article-sidebar {
            position: sticky;
            top: 100px;
        }

        .side-card {
            background: var(--surface);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 26px;
            margin-bottom: 24px;
            border: 1px solid var(--border);
        }

        .side-card h3 {
            font-size: 1.15rem;
            margin: 0 0 16px;
            color: var(--primary);
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
        }

        .side-card img {
            border-radius: 10px;
            margin-bottom: 14px;
        }

        .side-links li {
            margin-bottom: 10px;
        }

        .side-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: 10px;
            background: var(--bg);
            color: var(--text);
            font-weight: 600;
            transition: var(--transition);
        }

        .side-links a:hover {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateX(4px);
        }

        .side-links i {
            color: var(--accent);
            width: 20px;
            text-align: center;
        }

        .security-note {
            background: var(--primary-light);
            border-radius: 10px;
            padding: 14px;
            font-size: 0.92rem;
            color: var(--primary-dark);
            border-left: 3px solid var(--accent);
        }

        .read-more-section {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 64px 0;
        }

        .section-head {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-head h2 {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .section-head p {
            color: var(--muted);
            max-width: 600px;
            margin: 0 auto;
        }

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

        .read-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .read-card .card-cover img {
            height: 180px;
            object-fit: cover;
            width: 100%;
        }

        .read-card .card-body {
            padding: 24px;
        }

        .read-card h3 {
            font-size: 1.25rem;
            margin: 0 0 8px;
            color: var(--primary);
        }

        .read-card p {
            color: var(--muted);
            margin-bottom: 16px;
        }

        .read-card .card-link {
            color: var(--accent-dark);
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .read-card .card-link:hover {
            gap: 12px;
        }

        .cta-section {
            background: linear-gradient(120deg, var(--primary-dark), var(--primary));
            color: #fff;
            padding: 64px 0;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2rem;
            margin-bottom: 12px;
        }

        .cta-section p {
            opacity: 0.85;
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 18px rgba(14, 165, 233, 0.35);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(14, 165, 233, 0.4);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.7);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand .site-logo {
            color: #fff;
        }

        .footer-brand p {
            margin-top: 16px;
            max-width: 320px;
            color: rgba(255, 255, 255, 0.7);
        }

        .footer-links h4 {
            color: #fff;
            font-size: 1.05rem;
            margin-bottom: 18px;
        }

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.9rem;
        }

        .empty-state {
            max-width: 560px;
            margin: 120px auto;
            padding: 48px;
            text-align: center;
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }

        .empty-state h1 {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .empty-state p {
            color: var(--muted);
            margin-bottom: 24px;
        }

        @media (max-width: 1024px) {
            .read-more-cards {
                grid-template-columns: repeat(2, 1fr);
            }

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

        @media (max-width: 768px) {
            .header-inner {
                padding: 14px 20px;
            }

            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                display: none;
            }

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

            .nav-links {
                flex-direction: column;
                align-items: stretch;
                padding: 12px 20px 20px;
                gap: 8px;
            }

            .nav-links a {
                text-align: center;
            }

            .page-banner {
                padding: 68px 0 56px;
            }

            .page-banner h1 {
                font-size: 2rem;
            }

            .article-layout {
                padding-top: 40px;
            }

            .article-main {
                padding: 28px 24px;
            }

            .content-body {
                font-size: 1rem;
            }

            .content-body h2 {
                font-size: 1.45rem;
            }

            .content-body h3 {
                font-size: 1.2rem;
            }

            .read-more-cards {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .site-logo {
                font-size: 1.15rem;
            }

            .site-logo i {
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
            }

            .page-banner h1 {
                font-size: 1.6rem;
            }

            .banner-meta {
                gap: 10px;
            }

            .banner-meta span {
                padding: 6px 12px;
                font-size: 0.82rem;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

            .article-meta {
                gap: 10px;
            }

            .side-card {
                padding: 20px;
            }

            .section-head h2,
            .cta-section h2 {
                font-size: 1.6rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0b2a4a;
            --primary-dark: #071e36;
            --primary-light: #1a4066;
            --accent: #c9a05e;
            --accent-dark: #b08742;
            --bg: #f5f7fa;
            --surface: #ffffff;
            --text: #1e2a3a;
            --text-weak: #6b7a8f;
            --border: #e3e8ef;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover {
            color: var(--accent-dark);
        }

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

        .section-pad {
            padding: 80px 0;
        }

        .section-kicker {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(201, 160, 94, 0.14);
            color: var(--accent-dark);
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.04em;
        }

        .section-head {
            max-width: 700px;
            margin: 0 auto 48px;
            text-align: center;
        }

        .section-head h2 {
            font-size: 2rem;
            line-height: 1.3;
            color: var(--primary);
            margin: 14px 0 12px;
        }

        .section-head p {
            font-size: 1rem;
            color: var(--text-weak);
            margin: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 999px;
            font-size: 0.95rem;
            font-weight: 700;
            text-decoration: none;
            border: 2px solid transparent;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(11, 42, 74, 0.25);
        }

        .btn-secondary {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-secondary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(11, 42, 74, 0.2);
        }

        .btn-ghost-light {
            border-color: rgba(255, 255, 255, 0.8);
            color: #fff;
            background: transparent;
        }

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

        .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            background: var(--surface);
            border: 1px solid var(--border);
            color: var(--text-weak);
            font-size: 0.85rem;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .tag:hover {
            border-color: var(--accent);
            color: var(--accent-dark);
            background: rgba(201, 160, 94, 0.06);
        }

        .tag.small {
            padding: 4px 10px;
            font-size: 0.78rem;
        }

        /* Header Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 12px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 74px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .site-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .site-logo i {
            color: var(--accent);
            font-size: 1.4rem;
        }

        .main-nav .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            display: block;
            padding: 10px 18px;
            border-radius: 999px;
            color: var(--text);
            font-size: 0.95rem;
            font-weight: 500;
            text-decoration: none;
            transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
        }

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

        .nav-links a.active {
            background: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(11, 42, 74, 0.2);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: 1px solid var(--border);
            border-radius: 12px;
            background: var(--surface);
            color: var(--primary);
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .nav-toggle:hover {
            border-color: var(--accent);
            color: var(--accent-dark);
        }

        /* Page Hero */
        .page-hero {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: center;
            padding: 80px 0;
            color: #fff;
            background: linear-gradient(120deg, rgba(11, 42, 74, 0.92) 0%, rgba(11, 42, 74, 0.78) 60%, rgba(26, 64, 102, 0.7) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 24px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

        .breadcrumb-sep {
            opacity: 0.6;
        }

        .breadcrumb .current {
            color: rgba(255, 255, 255, 0.9);
        }

        .hero-kicker {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.2);
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            margin-bottom: 18px;
            text-transform: uppercase;
        }

        .page-hero h1 {
            font-size: 3rem;
            line-height: 1.2;
            margin: 0 0 18px;
            font-weight: 800;
        }

        .page-hero p {
            max-width: 640px;
            font-size: 1.05rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin: 0 0 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* Category Intro */
        .category-intro {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }

        .category-intro h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 16px 0 16px;
            line-height: 1.3;
        }

        .category-intro p {
            color: var(--text-weak);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .intro-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

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

        .stat-num {
            display: block;
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-label {
            display: block;
            margin-top: 8px;
            font-size: 0.92rem;
            color: var(--text-weak);
        }

        /* Tutorial Cards */
        .tutorial-cards {
            background: var(--bg);
        }

        .tutorial-cards .cell {
            margin-bottom: 28px;
        }

        .tutorial-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

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

        .tutorial-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .tutorial-card:hover .card-img {
            transform: scale(1.03);
        }

        .card-body {
            display: flex;
            flex-direction: column;
            flex: 1;
            padding: 24px;
        }

        .card-body .tag-row {
            display: flex;
            gap: 8px;
            margin-bottom: 12px;
        }

        .card-body h3 {
            font-size: 1.12rem;
            line-height: 1.4;
            color: var(--primary);
            margin: 0 0 10px;
        }

        .card-body p {
            flex: 1;
            font-size: 0.92rem;
            line-height: 1.7;
            color: var(--text-weak);
            margin: 0 0 18px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--accent-dark);
            text-decoration: none;
            transition: gap 0.3s ease;
        }

        .card-link:hover {
            gap: 12px;
            color: var(--primary);
        }

        /* Step Guide */
        .step-guide {
            background: var(--primary);
            background-image: linear-gradient(135deg, rgba(7, 30, 54, 0.95) 0%, rgba(11, 42, 74, 0.92) 100%),
                url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            color: #fff;
        }

        .step-guide .section-head h2 {
            color: #fff;
        }

        .step-guide .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }

        .step-guide .section-kicker {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        .step-guide .cell {
            margin-bottom: 24px;
        }

        .step-card {
            position: relative;
            height: 100%;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-lg);
            padding: 34px 24px 28px;
            text-align: center;
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .step-card:hover {
            transform: translateY(-6px);
            background: rgba(255, 255, 255, 0.12);
        }

        .step-num {
            width: 56px;
            height: 56px;
            margin: 0 auto 20px;
            background: var(--accent);
            color: #fff;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 800;
            box-shadow: 0 8px 20px rgba(201, 160, 94, 0.3);
        }

        .step-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 10px;
            color: #fff;
        }

        .step-card p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.75);
            margin: 0;
        }

        /* Latest Articles */
        .latest-articles {
            background: var(--bg);
        }

        .article-list {
            max-width: 900px;
            margin: 0 auto;
        }

        .article-row {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 20px;
            margin-bottom: 18px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }

        .article-row:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .article-thumb {
            width: 180px;
            height: 120px;
            flex-shrink: 0;
            border-radius: var(--radius);
            overflow: hidden;
        }

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

        .article-row:hover .article-thumb img {
            transform: scale(1.05);
        }

        .article-content {
            flex: 1;
            min-width: 0;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
        }

        .article-date {
            font-size: 0.82rem;
            color: var(--text-weak);
        }

        .article-content h3 {
            font-size: 1.08rem;
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .article-content h3 a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .article-content h3 a:hover {
            color: var(--accent-dark);
        }

        .article-content p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.7;
            margin: 0;
        }

        .article-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--primary);
            transition: all 0.3s ease;
        }

        .article-arrow:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* FAQ Section */
        .faq-section {
            background: var(--surface);
            border-top: 1px solid var(--border);
        }

        .faq-intro .section-kicker {
            margin-bottom: 14px;
        }

        .faq-intro h2 {
            font-size: 2rem;
            line-height: 1.3;
            color: var(--primary);
            margin: 0 0 16px;
        }

        .faq-intro p {
            color: var(--text-weak);
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .custom-accordion {
            background: transparent;
            border: none;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .custom-accordion .accordion-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .custom-accordion .accordion-item.is-active {
            box-shadow: var(--shadow);
            border-color: rgba(201, 160, 94, 0.45);
        }

        .custom-accordion .accordion-title {
            position: relative;
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            padding: 20px 56px 20px 24px;
            margin: 0;
            text-decoration: none;
            border-bottom: 1px solid transparent;
            transition: all 0.3s ease;
        }

        .custom-accordion .accordion-title:hover {
            color: var(--primary);
            background: rgba(11, 42, 74, 0.02);
        }

        .custom-accordion .accordion-title::before,
        .custom-accordion .accordion-title::after {
            display: none;
        }

        .faq-q {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 800;
        }

        .faq-icon {
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(201, 160, 94, 0.12);
            color: var(--accent-dark);
            font-size: 0.85rem;
            transition: all 0.3s ease;
        }

        .custom-accordion .accordion-item.is-active .faq-icon {
            transform: translateY(-50%) rotate(45deg);
            background: var(--accent);
            color: #fff;
        }

        .custom-accordion .accordion-content {
            background: transparent;
            border: none;
            padding: 4px 24px 22px 68px;
            color: var(--text-weak);
            font-size: 0.95rem;
            line-height: 1.75;
        }

        /* CTA Banner */
        .cta-banner {
            padding: 90px 0;
            background: linear-gradient(120deg, rgba(11, 42, 74, 0.94) 0%, rgba(7, 30, 54, 0.9) 100%),
                url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
        }

        .cta-box {
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
            color: #fff;
        }

        .cta-box h2 {
            font-size: 2rem;
            line-height: 1.3;
            margin: 0 0 14px;
        }

        .cta-box p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 30px;
        }

        .cta-box .hero-actions {
            justify-content: center;
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .site-footer .site-logo {
            color: #fff;
        }

        .site-footer .site-logo i {
            color: var(--accent);
        }

        .footer-brand p {
            margin: 16px 0 0;
            font-size: 0.92rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.62);
        }

        .footer-links h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 16px;
        }

        .footer-links ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

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

        .footer-links ul li a {
            color: rgba(255, 255, 255, 0.64);
            text-decoration: none;
            font-size: 0.92rem;
            transition: color 0.3s ease;
        }

        .footer-links ul li a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            font-size: 0.85rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom span {
            margin: 0 6px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .intro-stats {
                gap: 14px;
            }
            .stat-card {
                padding: 22px 14px;
            }
            .stat-num {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .section-pad {
                padding: 56px 0;
            }
            .page-hero {
                min-height: 320px;
                padding: 60px 0;
            }
            .page-hero h1 {
                font-size: 2.4rem;
            }
            .page-hero p {
                font-size: 0.98rem;
            }
            .header-inner {
                height: 64px;
                padding: 0 16px;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .main-nav {
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #ffffff;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 32px rgba(0, 0, 0, 0.08);
                padding: 16px 16px 24px;
                display: none;
                z-index: 999;
            }
            .main-nav.open {
                display: block;
            }
            .nav-links {
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
            }
            .nav-links a {
                display: block;
                text-align: center;
                padding: 12px 16px;
                border-radius: 10px;
            }
            .category-intro h2 {
                font-size: 1.6rem;
            }
            .intro-stats {
                margin-top: 32px;
            }
            .section-head h2 {
                font-size: 1.6rem;
            }
            .section-head p {
                font-size: 0.94rem;
            }
            .article-row {
                flex-direction: column;
                align-items: flex-start;
            }
            .article-thumb {
                width: 100%;
                height: 180px;
            }
            .article-arrow {
                align-self: flex-end;
            }
            .custom-accordion .accordion-content {
                padding: 4px 20px 20px 56px;
            }
            .faq-intro {
                margin-bottom: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .cta-box h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .site-logo {
                font-size: 1.15rem;
            }
            .site-logo i {
                font-size: 1.15rem;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 0.92rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn {
                justify-content: center;
                width: 100%;
            }
            .intro-stats {
                grid-template-columns: 1fr 1fr;
            }
            .stat-card:last-child {
                grid-column: 1 / -1;
            }
            .section-head h2 {
                font-size: 1.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-banner {
                padding: 60px 0;
            }
            .cta-box h2 {
                font-size: 1.4rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0d2a4a;
            --primary-light: #16406b;
            --accent: #e9b949;
            --accent-2: #2db4c8;
            --bg: #f5f7fb;
            --bg-white: #ffffff;
            --text: #1c2b3a;
            --text-weak: #5b6b7c;
            --border: #e3e9f0;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow: 0 10px 30px rgba(13, 42, 74, .08);
            --shadow-hover: 0 18px 40px rgba(13, 42, 74, .14);
            --transition: .25s ease;
        }

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

        html,
        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(13, 42, 74, .05);
        }

        .header-inner {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }

        .site-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--primary);
        }

        .site-logo i {
            color: var(--accent);
            font-size: 1.4rem;
        }

        .main-nav .nav-links {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 6px;
        }

        .nav-links li a {
            display: inline-block;
            padding: 10px 18px;
            border-radius: 999px;
            font-weight: 600;
            font-size: .95rem;
            color: var(--text);
        }

        .nav-links li a:hover {
            background: #eef3f8;
            color: var(--primary);
        }

        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--primary);
            cursor: pointer;
            padding: 6px;
        }

        .page-hero {
            position: relative;
            padding: 130px 0 100px;
            background: linear-gradient(135deg, rgba(13, 42, 74, .93), rgba(13, 42, 74, .68)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            text-align: center;
        }

        .page-hero .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 999px;
            padding: 8px 20px;
            font-size: .85rem;
            margin-bottom: 28px;
            backdrop-filter: blur(6px);
        }

        .page-hero .breadcrumb a:hover {
            color: var(--accent);
        }

        .page-hero h1 {
            font-size: clamp(2rem, 4.5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.25;
            max-width: 800px;
            margin: 0 auto 20px;
        }

        .page-hero .hero-sub {
            max-width: 640px;
            margin: 0 auto;
            font-size: 1.1rem;
            opacity: .88;
        }

        .section {
            padding: 90px 0;
        }

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

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 52px;
        }

        .section-eyebrow {
            display: inline-block;
            background: rgba(233, 185, 73, .16);
            color: #a87b1a;
            font-weight: 700;
            font-size: .8rem;
            letter-spacing: .12em;
            text-transform: uppercase;
            padding: 6px 18px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 16px;
            color: var(--primary);
        }

        .section-head p {
            color: var(--text-weak);
            font-size: 1.05rem;
        }

        .quick-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .quick-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px;
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .quick-card .cover {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 20px;
            aspect-ratio: 16/9;
        }

        .quick-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

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

        .quick-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            background: rgba(13, 42, 74, .08);
            color: var(--primary);
            margin-bottom: 14px;
        }

        .quick-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--primary);
        }

        .quick-card p {
            color: var(--text-weak);
            font-size: .95rem;
            margin-bottom: 16px;
            flex-grow: 1;
        }

        .quick-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            color: var(--primary);
        }

        .quick-card .card-link i {
            transition: transform var(--transition);
        }

        .quick-card:hover .card-link i {
            transform: translateX(4px);
        }

        .topic-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .topic-bar a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 10px 20px;
            font-weight: 600;
            font-size: .92rem;
            color: var(--text);
            transition: all var(--transition);
        }

        .topic-bar a i {
            color: var(--accent);
        }

        .topic-bar a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .faq-wrap {
            max-width: 880px;
            margin: 0 auto;
        }

        .accordion {
            background: transparent;
            margin: 0;
        }

        .accordion-item {
            background: var(--bg-white) !important;
            border: 1px solid var(--border) !important;
            border-radius: var(--radius) !important;
            margin-bottom: 16px !important;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(13, 42, 74, .04);
            transition: box-shadow var(--transition);
        }

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

        .accordion-item.is-active {
            border-color: rgba(13, 42, 74, .2) !important;
            box-shadow: var(--shadow);
        }

        .accordion-title {
            padding: 22px 26px !important;
            font-size: 1.05rem !important;
            font-weight: 700 !important;
            color: var(--text) !important;
            background: transparent !important;
            border-bottom: 1px solid transparent;
            line-height: 1.5;
        }

        .accordion-title:hover {
            color: var(--primary) !important;
        }

        .accordion-title::before {
            color: var(--accent) !important;
            font-size: 1.1rem !important;
        }

        .accordion-item.is-active .accordion-title {
            color: var(--primary) !important;
            border-bottom-color: var(--border);
        }

        .accordion-content {
            padding: 6px 26px 24px !important;
            color: var(--text-weak) !important;
            line-height: 1.85;
        }

        .accordion-content p {
            margin-bottom: 10px;
        }

        .accordion-content ul {
            list-style: none;
            margin: 10px 0 0;
            padding: 0;
        }

        .accordion-content ul li {
            position: relative;
            padding-left: 22px;
            margin-bottom: 8px;
        }

        .accordion-content ul li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 0;
            color: var(--accent-2);
            font-size: .85rem;
        }

        .stats-section {
            background: linear-gradient(135deg, #0d2a4a 0%, #16406b 100%);
            color: #fff;
            padding: 90px 0;
            text-align: center;
        }

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

        .stat-item {
            padding: 30px 16px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .1);
            backdrop-filter: blur(4px);
        }

        .stat-item i {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 14px;
        }

        .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
        }

        .stat-item .label {
            color: rgba(255, 255, 255, .8);
            font-size: .95rem;
            margin-top: 6px;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px 24px;
            text-align: center;
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition);
        }

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

        .step-card .step-icon {
            width: 60px;
            height: 60px;
            border-radius: 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
        }

        .step-card .step-num {
            position: absolute;
            top: 16px;
            right: 16px;
            background: rgba(233, 185, 73, .18);
            color: #a87b1a;
            font-size: .8rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
        }

        .step-card h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: .92rem;
            color: var(--text-weak);
            margin: 0;
        }

        .cta-section {
            padding: 90px 0;
        }

        .cta-card {
            background: linear-gradient(135deg, #fdf8ec 0%, #fff 60%);
            border: 1px solid rgba(233, 185, 73, .35);
            border-radius: calc(var(--radius) + 8px);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: "";
            position: absolute;
            top: -40px;
            right: -40px;
            width: 160px;
            height: 160px;
            background: radial-gradient(circle, rgba(233, 185, 73, .25), transparent 70%);
        }

        .cta-card h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 14px;
        }

        .cta-card p {
            font-size: 1.05rem;
            color: var(--text-weak);
            max-width: 560px;
            margin: 0 auto 30px;
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(13, 42, 74, .2);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .related-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

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

        .related-card .related-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

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

        .related-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .related-body .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            align-self: flex-start;
            background: rgba(45, 180, 200, .12);
            color: #1b7e8f;
            font-size: .78rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .related-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-body p {
            color: var(--text-weak);
            font-size: .92rem;
            margin-bottom: 16px;
            flex-grow: 1;
        }

        .related-body .card-link {
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .related-body .card-link i {
            transition: transform var(--transition);
        }

        .related-body .card-link:hover i {
            transform: translateX(4px);
        }

        .site-footer {
            background: #0a1d33;
            color: rgba(255, 255, 255, .75);
            padding: 70px 0 30px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }

        .footer-brand .site-logo {
            color: #fff;
            margin-bottom: 16px;
            font-size: 1.3rem;
        }

        .footer-brand p {
            font-size: .9rem;
            max-width: 340px;
            line-height: 1.7;
            margin: 0;
        }

        .footer-links h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-links ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

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

        .footer-links ul a {
            color: rgba(255, 255, 255, .7);
            font-size: .92rem;
        }

        .footer-links ul a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            font-size: .88rem;
            color: rgba(255, 255, 255, .5);
        }

        .footer-bottom span {
            margin: 0 6px;
            opacity: .5;
        }

        @media (max-width: 1024px) {
            .quick-grid,
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 860px) {
            .nav-toggle {
                display: block;
            }

            .main-nav {
                position: absolute;
                top: 76px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                display: none;
                padding: 16px 24px;
                box-shadow: 0 24px 40px rgba(13, 42, 74, .1);
            }

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

            .nav-links {
                flex-direction: column;
                gap: 6px;
            }

            .nav-links li a {
                display: block;
                padding: 13px 16px;
                border-radius: 12px;
            }

            .page-hero {
                padding: 90px 0 70px;
            }

            .section {
                padding: 64px 0;
            }
        }

        @media (max-width: 640px) {
            .quick-grid,
            .related-grid {
                grid-template-columns: 1fr;
            }

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .cta-card {
                padding: 36px 24px;
            }

            .cta-buttons .btn {
                width: 100%;
                justify-content: center;
            }

            .page-hero h1 {
                font-size: 1.9rem;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 0 16px;
                height: 68px;
            }

            .main-nav {
                top: 68px;
            }

            .container {
                padding: 0 16px;
            }

            .section-head h2 {
                font-size: 1.6rem;
            }

            .accordion-title {
                padding: 18px 18px !important;
                font-size: .98rem !important;
            }

            .accordion-content {
                padding: 4px 18px 18px !important;
            }

            .cta-card h2 {
                font-size: 1.6rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1a2a6c;
            --primary-light: #2d4a9e;
            --accent: #c9a135;
            --accent-light: #e8c96a;
            --bg: #f5f7fc;
            --bg-alt: #eef1f8;
            --bg-dark: #0f1a3d;
            --text: #1a2233;
            --text-light: #5a6478;
            --text-white: #ffffff;
            --border: #dce2f0;
            --radius: 16px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.08);
            --shadow-md: 0 8px 30px rgba(26, 42, 108, 0.12);
            --shadow-lg: 0 16px 50px rgba(26, 42, 108, 0.18);
            --transition: all 0.3s ease;
            --container-max: 1200px;
            --space-section: 80px;
            --space-block: 40px;
        }

        *,
        *::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;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

        a:hover,
        a:focus {
            color: var(--accent);
            outline: none;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

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

        .site-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 20px rgba(26, 42, 108, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            min-height: 72px;
        }

        .site-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .site-logo i {
            font-size: 1.5rem;
            color: var(--accent);
            transition: var(--transition);
        }

        .site-logo:hover i {
            transform: rotate(-10deg) scale(1.1);
        }

        .main-nav {
            display: flex;
            align-items: center;
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 8px;
            margin: 0;
        }

        .nav-links a {
            display: inline-block;
            padding: 10px 18px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            border: 1px solid transparent;
        }

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

        .nav-links a.active {
            color: var(--text-white);
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 4px 15px rgba(26, 42, 108, 0.3);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: var(--bg-alt);
        }

        .page-banner {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 90px 0 70px;
            position: relative;
            overflow: hidden;
            color: var(--text-white);
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/backpic/back-2.png') no-repeat center center/cover;
            opacity: 0.12;
            pointer-events: none;
        }

        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }

        .page-banner .banner-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 18px;
            backdrop-filter: blur(8px);
        }

        .page-banner h1 {
            font-size: 2.8rem;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 18px;
            letter-spacing: -1px;
        }

        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 30px;
            line-height: 1.8;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            line-height: 1;
            transition: var(--transition);
            border: 2px solid transparent;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--text) !important;
            box-shadow: 0 4px 20px rgba(201, 161, 53, 0.3);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(201, 161, 53, 0.4);
            color: var(--text) !important;
        }

        .btn-outline-light {
            background: transparent;
            color: var(--text-white) !important;
            border-color: rgba(255, 255, 255, 0.6);
        }

        .btn-outline-light:hover,
        .btn-outline-light:focus {
            background: rgba(255, 255, 255, 0.15);
            border-color: var(--text-white);
            transform: translateY(-2px);
            color: var(--text-white) !important;
        }

        .section {
            padding: var(--space-section) 0;
        }

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

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 50px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(26, 42, 108, 0.08);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 14px;
            line-height: 1.3;
            letter-spacing: -0.5px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        .security-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 20px;
        }

        .security-card {
            background: var(--text-white);
            border-radius: var(--radius);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .security-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--accent);
            transform: scaleY(0);
            transform-origin: bottom;
            transition: var(--transition);
        }

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

        .security-card:hover::before {
            transform: scaleY(1);
        }

        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            color: var(--text-white);
        }

        .security-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }

        .security-card p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .practice-section {
            background: var(--text-white);
        }

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

        .practice-step {
            position: relative;
            padding: 28px 20px;
            text-align: center;
            border-radius: var(--radius);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .step-number {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 4px 14px rgba(26, 42, 108, 0.3);
        }

        .practice-step h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .practice-step p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.6;
        }

        .stats-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary) 100%);
            padding: 70px 0;
            color: var(--text-white);
        }

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

        .stat-item {
            text-align: center;
            padding: 20px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.16);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.95rem;
            opacity: 0.88;
        }

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

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .tip-card {
            background: var(--text-white);
            border-radius: var(--radius);
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .tip-card h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .tip-card h3 i {
            color: var(--accent);
        }

        .tip-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.7;
        }

        .faq-section {
            background: var(--text-white);
        }

        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg);
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary-light);
        }

        .faq-item summary {
            padding: 22px 28px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.85rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-item[open] summary {
            background: var(--text-white);
            border-bottom: 1px solid var(--border);
        }

        .faq-answer {
            padding: 20px 28px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.8;
            background: var(--text-white);
        }

        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 80px 0;
            color: var(--text-white);
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 1.15rem;
            opacity: 0.9;
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .site-logo {
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 0;
        }

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

        .footer-links ul {
            list-style: none;
            margin: 0;
        }

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.92rem;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }

        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom span {
            margin: 0 6px;
        }

        @media screen and (max-width: 1024px) {
            :root {
                --space-section: 60px;
            }

            .header-inner {
                padding: 0 20px;
            }

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

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media screen and (max-width: 768px) {
            .header-inner {
                min-height: 64px;
            }

            .nav-toggle {
                display: block;
            }

            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--text-white);
                box-shadow: 0 8px 30px rgba(26, 42, 108, 0.15);
                padding: 16px;
                transform: translateY(-120%);
                transition: transform 0.3s ease;
                border-bottom: 1px solid var(--border);
            }

            .main-nav.open {
                transform: translateY(0);
            }

            .nav-links {
                flex-direction: column;
                gap: 6px;
            }

            .nav-links a {
                border-radius: var(--radius-sm);
                padding: 14px 18px;
            }

            .page-banner {
                padding: 60px 0 50px;
            }

            .page-banner h1 {
                font-size: 2rem;
            }

            .page-banner p {
                font-size: 1.02rem;
            }

            .section-title {
                font-size: 1.7rem;
            }

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

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

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media screen and (max-width: 520px) {
            .container {
                padding: 0 18px;
            }

            .page-banner h1 {
                font-size: 1.7rem;
            }

            .banner-actions {
                flex-direction: column;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

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

            .stat-item {
                padding: 24px;
            }

            .section-tag {
                font-size: 0.78rem;
            }

            .faq-item summary {
                padding: 18px 20px;
                font-size: 0.98rem;
            }

            .faq-answer {
                padding: 16px 20px;
            }
        }