/* roulang page: index */
:root {
            --primary: #4f46e5;
            --primary-dark: #3730a3;
            --primary-light: #eef2ff;
            --secondary: #f59e0b;
            --secondary-light: #fef3c7;
            --bg: #f9fafb;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 20px 60px rgba(15, 23, 42, 0.12);
            --gutter: 2.4rem;
            --section-space: 6rem;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: all .25s ease;
        }

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

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

        .container {
            max-width: 1220px;
            margin: 0 auto;
            padding-left: var(--gutter);
            padding-right: var(--gutter);
        }

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

        .section-sm {
            padding: 3.5rem 0;
        }

        .text-center {
            text-align: center;
        }

        .text-muted {
            color: var(--text-muted);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 18px 0;
            pointer-events: none;
            transition: all .3s ease;
        }

        .dock-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: 60px;
            box-shadow: var(--shadow-md);
            padding: 0 28px;
            height: 66px;
            max-width: 1200px;
            margin: 0 auto;
            pointer-events: auto;
            transition: box-shadow .3s ease;
        }

        .dock-nav:hover {
            box-shadow: var(--shadow-lg);
        }

        .logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .logo i {
            color: var(--primary);
            font-size: 22px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 4px;
            margin: 0;
        }

        .nav-links li {
            margin: 0;
        }

        .nav-links a {
            display: block;
            padding: 8px 16px;
            border-radius: 40px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-muted);
            transition: all .25s ease;
        }

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

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 22px;
            cursor: pointer;
            padding: 6px;
            border-radius: 50%;
            transition: background .25s ease;
        }

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

        /* 移动端导航 */
        @media (max-width: 1024px) {
            .nav-links {
                position: absolute;
                top: 80px;
                left: 16px;
                right: 16px;
                background: #ffffff;
                border-radius: 20px;
                box-shadow: var(--shadow-lg);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                gap: 8px;
                opacity: 0;
                visibility: hidden;
                transform: translateY(-10px);
                transition: all .3s ease;
            }

            .nav-links.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }

            .nav-links a {
                padding: 12px 18px;
                border-radius: 12px;
                font-size: 15px;
            }

            .nav-toggle {
                display: block;
            }

            .dock-nav {
                padding: 0 18px;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 17px;
            }

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

            .dock-nav {
                height: 58px;
                padding: 0 14px;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            padding: 190px 0 120px;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.82), rgba(79, 70, 229, 0.5)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 0;
            right: 0;
            height: 120px;
            background: var(--bg);
            border-radius: 50% 50% 0 0;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 820px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 40px;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 28px;
            color: #f0f0ff;
            backdrop-filter: blur(6px);
        }

        .hero-badge i {
            color: var(--secondary);
        }

        .hero-title {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 22px;
            letter-spacing: 1px;
        }

        .hero-title span {
            color: var(--secondary);
        }

        .hero-sub {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 38px;
            line-height: 1.8;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all .3s ease;
            box-shadow: var(--shadow-sm);
        }

        .btn i {
            font-size: 16px;
        }

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

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

        .btn-outline {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.4);
            backdrop-filter: blur(4px);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.25);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-secondary {
            background: var(--secondary);
            color: #1e293b;
        }

        .btn-secondary:hover {
            background: #d97706;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 150px 0 90px;
            }

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

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

        @media (max-width: 520px) {
            .hero-btns {
                flex-direction: column;
                width: 100%;
            }

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

        /* ===== 数据统计条 ===== */
        .stats-strip {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            padding: 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            margin: 0;
            padding: 0;
        }

        .stat-item {
            padding: 40px 32px;
            text-align: center;
            border-right: 1px solid var(--border);
            position: relative;
        }

        .stat-item:last-child {
            border-right: none;
        }

        .stat-item .num {
            font-size: 46px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
            font-family: "Inter", sans-serif;
            letter-spacing: -1px;
        }

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

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

            .stat-item:nth-child(2) {
                border-right: none;
            }

            .stat-item:nth-child(-n+2) {
                border-bottom: 1px solid var(--border);
            }
        }

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

            .stat-item {
                border-right: none;
                border-bottom: 1px solid var(--border);
                padding: 28px 20px;
            }

            .stat-item:last-child {
                border-bottom: none;
            }

            .stat-item .num {
                font-size: 38px;
            }
        }

        /* ===== 核心特色 ===== */
        .features-section {
            background: var(--bg);
        }

        .section-head {
            margin-bottom: 52px;
        }

        .section-head .eyebrow {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .section-head h2 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 14px;
            color: var(--text);
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

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

        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            text-align: center;
            transition: all .35s ease;
            box-shadow: var(--shadow-sm);
        }

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

        .feature-icon {
            width: 72px;
            height: 72px;
            border-radius: 20px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 22px;
            font-size: 30px;
            color: var(--primary);
            transition: all .35s ease;
        }

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

        .feature-card:nth-child(3) .feature-icon {
            background: #d1fae5;
            color: #059669;
        }

        .feature-card:hover .feature-icon {
            transform: scale(1.08);
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.7;
        }

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

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

            .section-head h2 {
                font-size: 30px;
            }
        }

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

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

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-dark);
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--shadow-md);
            transition: all .35s ease;
            text-decoration: none;
        }

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

        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.5;
            transition: all .5s ease;
            filter: saturate(0.8);
        }

        .category-card:hover img {
            transform: scale(1.05);
            opacity: 0.6;
            filter: saturate(1);
        }

        .category-overlay {
            position: relative;
            z-index: 2;
            padding: 30px;
            width: 100%;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0));
        }

        .category-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: #fff;
            background: rgba(255, 255, 255, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .category-overlay h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .category-overlay p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 14px;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--secondary);
            font-weight: 600;
            font-size: 14px;
        }

        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin: 0 auto;
            }

            .category-card {
                min-height: 240px;
            }
        }

        /* ===== 最新资讯 ===== */
        .news-section {
            background: var(--bg);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: start;
        }

        .news-list {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

        .news-list-title {
            font-size: 18px;
            font-weight: 700;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 8px;
        }

        .news-list-title i {
            color: var(--primary);
        }

        .news-item {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid #f1f5f9;
            align-items: flex-start;
            transition: all .3s ease;
            border-radius: 12px;
            padding-left: 8px;
            padding-right: 8px;
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-item:hover {
            background: var(--primary-light);
            transform: translateX(4px);
        }

        .news-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            margin-top: 2px;
        }

        .news-content {
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 6px;
        }

        .news-cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            background: var(--secondary-light);
            color: #d97706;
            padding: 2px 10px;
            border-radius: 16px;
        }

        .news-date {
            font-size: 12.5px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .news-content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 6px;
            transition: color .2s;
        }

        .news-item:hover .news-content h4 {
            color: var(--primary);
        }

        .news-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        .news-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .info-card {
            background: var(--bg-dark);
            border-radius: var(--radius-lg);
            padding: 30px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .info-card::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 140px;
            height: 140px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
        }

        .info-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .info-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 18px;
            line-height: 1.7;
        }

        .info-card .btn {
            position: relative;
            z-index: 2;
        }

        @media (max-width: 1024px) {
            .news-layout {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .news-list {
                padding: 16px;
            }

            .news-item {
                flex-direction: row;
            }
        }

        /* ===== 图文区块 ===== */
        .platform-section {
            background: var(--bg-white);
        }

        .platform-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .platform-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            min-height: 360px;
        }

        .platform-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .platform-image .img-float {
            position: absolute;
            bottom: 20px;
            right: 20px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 16px;
            padding: 16px 20px;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .platform-image .img-float i {
            font-size: 24px;
            color: var(--primary);
        }

        .platform-image .img-float span {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }

        .platform-text h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 20px;
        }

        .platform-text h2 span {
            color: var(--primary);
        }

        .platform-text p {
            font-size: 15.5px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .platform-list {
            list-style: none;
            margin: 0 0 30px;
        }

        .platform-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 15px;
            border-bottom: 1px solid #f1f5f9;
        }

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

        .platform-list li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 16px;
            flex-shrink: 0;
        }

        @media (max-width: 1024px) {
            .platform-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .platform-image {
                min-height: 280px;
            }
        }

        @media (max-width: 520px) {
            .platform-text h2 {
                font-size: 28px;
            }
        }

        /* ===== 使用流程 ===== */
        .process-section {
            background: var(--bg);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
        }

        .process-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 32px 24px;
            position: relative;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
        }

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

        .process-num {
            width: 42px;
            height: 42px;
            margin: 0 auto 18px;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .process-icon {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 14px;
            display: block;
        }

        .process-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .process-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .process-arrow {
            position: absolute;
            top: 50%;
            right: -16px;
            transform: translateY(-50%);
            color: var(--border);
            font-size: 20px;
            z-index: 2;
            background: var(--bg);
            padding: 4px;
            border-radius: 50%;
        }

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

            .process-arrow {
                display: none;
            }
        }

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

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
        }

        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            background: var(--bg-white);
            overflow: hidden;
            transition: box-shadow .3s ease;
        }

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

        .faq-question {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text);
            transition: color .25s ease;
        }

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

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }

        .faq-answer p {
            padding: 0 24px 20px 24px;
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px solid #f1f5f9;
            padding-top: 18px;
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 90px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -90px;
            left: -50px;
            width: 180px;
            height: 180px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 38px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        @media (max-width: 520px) {
            .cta-section {
                padding: 60px 0;
            }

            .cta-inner h2 {
                font-size: 30px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
        }

        .footer-top {
            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 .logo {
            color: #fff;
            margin-bottom: 14px;
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

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

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

        .footer-col ul a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: all .25s ease;
        }

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

        .footer-bottom {
            padding: 24px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 1024px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

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

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

        /* ===== 通用动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-up {
            animation: fadeInUp .6s ease both;
        }

        .delay-1 {
            animation-delay: .1s;
        }

        .delay-2 {
            animation-delay: .2s;
        }

        .delay-3 {
            animation-delay: .3s;
        }

/* roulang page: category1 */
:root {
            --primary: #5b3df5;
            --primary-light: #7c5cf6;
            --primary-dark: #472ec2;
            --secondary: #ff7a3d;
            --secondary-light: #ff9a6a;
            --accent: #12c2a4;
            --dark: #0d0b1a;
            --dark-2: #161226;
            --dark-3: #1e1932;
            --light: #f7f6fd;
            --light-2: #eeecfa;
            --text: #262233;
            --text-light: #6b6680;
            --border: #e6e3f5;
            --border-dark: #2e2845;
            --white: #ffffff;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 10px rgba(37, 30, 80, 0.06);
            --shadow-md: 0 8px 30px rgba(37, 30, 80, 0.1);
            --shadow-lg: 0 16px 48px rgba(37, 30, 80, 0.16);
            --shadow-primary: 0 8px 28px rgba(91, 61, 245, 0.28);
            --section-pad: 90px 0;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--light);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }

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

        /* ======= Header / Dock Nav ======= */
        .site-header {
            position: sticky;
            top: 20px;
            z-index: 1000;
            padding: 0 20px;
        }

        .dock-nav {
            max-width: 1180px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 28px;
            box-shadow: 0 8px 40px rgba(37, 30, 80, 0.12);
            transition: var(--transition);
        }

        .dock-nav:hover {
            box-shadow: 0 12px 48px rgba(37, 30, 80, 0.16);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo i {
            font-size: 1.4rem;
            color: var(--primary);
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
        }

        .nav-links li {
            margin: 0;
        }

        .nav-links a {
            display: block;
            padding: 10px 18px;
            border-radius: var(--radius-full);
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-light);
            transition: var(--transition);
        }

        .nav-links a:hover {
            color: var(--primary);
            background: var(--light-2);
        }

        .nav-links a.active {
            color: var(--white);
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            box-shadow: 0 4px 16px rgba(91, 61, 245, 0.3);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--light-2);
            font-size: 1.2rem;
            color: var(--text);
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

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

        /* ======= Page Banner ======= */
        .page-banner {
            position: relative;
            padding: 120px 0 90px;
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 60%, #2a1f5e 100%);
            color: var(--white);
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.18;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(91, 61, 245, 0.35) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(10px);
            padding: 8px 20px;
            border-radius: var(--radius-full);
            font-size: 0.88rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }

        .page-banner h1 {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 1px;
            background: linear-gradient(120deg, #fff 40%, #b5a6ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .page-banner p.lead {
            font-size: 1.12rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 720px;
            margin: 0 auto 36px;
        }

        .banner-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .banner-stat {
            text-align: center;
        }

        .banner-stat .num {
            font-size: 2rem;
            font-weight: 900;
            background: linear-gradient(135deg, #fff 30%, #c4b8ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .banner-stat .label {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        /* ======= Breadcrumb ======= */
        .breadcrumb-wrap {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }

        .breadcrumb-wrap .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-light);
        }

        .breadcrumb-wrap a {
            color: var(--text-light);
        }

        .breadcrumb-wrap a:hover {
            color: var(--primary);
        }

        .breadcrumb-wrap .sep {
            color: var(--border);
        }

        .breadcrumb-wrap .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ======= Section base ======= */
        .section {
            padding: var(--section-pad);
        }

        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-head .eyebrow {
            display: inline-block;
            padding: 6px 18px;
            border-radius: var(--radius-full);
            background: var(--light-2);
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-head p {
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto;
            font-size: 1.02rem;
        }

        .section-sub {
            text-align: left;
            margin-bottom: 40px;
        }

        .section-sub h2 {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .section-sub p {
            color: var(--text-light);
        }

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

        .step-card {
            background: var(--white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 36px 30px;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }

        .step-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }

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

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

        .step-num {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 900;
            color: var(--white);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: var(--shadow-primary);
            margin-bottom: 22px;
        }

        .step-card:nth-child(2) .step-num {
            background: linear-gradient(135deg, var(--secondary), #ff5e3a);
            box-shadow: 0 8px 28px rgba(255, 122, 61, 0.3);
        }

        .step-card:nth-child(3) .step-num {
            background: linear-gradient(135deg, var(--accent), #0aa28a);
            box-shadow: 0 8px 28px rgba(18, 194, 164, 0.3);
        }

        .step-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

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

        /* ======= Split Feature ======= */
        .split-feature {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            margin-bottom: 80px;
        }

        .split-feature:last-child {
            margin-bottom: 0;
        }

        .split-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
        }

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

        .split-media:hover img {
            transform: scale(1.04);
        }

        .split-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(13, 11, 26, 0.2) 0%, transparent 50%);
            pointer-events: none;
        }

        .split-content h3 {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 18px;
        }

        .split-content h3 .highlight {
            color: var(--primary);
        }

        .split-content p {
            color: var(--text-light);
            margin-bottom: 20px;
            line-height: 1.85;
        }

        .check-list {
            margin-top: 20px;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 0.95rem;
            color: var(--text);
            border-bottom: 1px solid var(--light-2);
        }

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

        .check-list li i {
            color: var(--accent);
            margin-top: 5px;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        /* ======= CTA Banner ======= */
        .cta-banner {
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 50%, #2a1f5e 100%);
            border-radius: var(--radius-lg);
            padding: 56px 60px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            color: var(--white);
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(91, 61, 245, 0.4) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-banner h3 {
            font-size: 1.7rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .cta-banner p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.95rem;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, var(--secondary), #ff5e3a);
            color: var(--white);
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 8px 28px rgba(255, 122, 61, 0.4);
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(255, 122, 61, 0.5);
        }

        /* ======= FAQ ======= */
        .faq-grid {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            transition: var(--transition);
        }

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

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 28px;
            cursor: pointer;
            font-weight: 700;
            font-size: 0.98rem;
            color: var(--dark);
            transition: var(--transition);
        }

        .faq-q i {
            color: var(--primary);
            font-size: 0.85rem;
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-q i {
            transform: rotate(45deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .faq-item.active .faq-a {
            max-height: 300px;
        }

        .faq-a p {
            padding: 0 28px 22px;
            color: var(--text-light);
            font-size: 0.93rem;
            line-height: 1.8;
        }

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

        .related-card {
            background: var(--white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

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

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

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

        .related-body {
            padding: 24px;
        }

        .related-body .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: var(--radius-full);
            background: var(--light-2);
            color: var(--primary);
            font-size: 0.76rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .related-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .related-body p {
            color: var(--text-light);
            font-size: 0.88rem;
            line-height: 1.65;
            margin-bottom: 16px;
        }

        .related-body .more {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .related-body .more i {
            transition: transform 0.3s ease;
        }

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

        /* ======= Notice Strip ======= */
        .notice-strip {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 28px;
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 40px;
            font-size: 0.92rem;
        }

        .notice-strip i {
            font-size: 1.3rem;
            color: var(--secondary);
            flex-shrink: 0;
        }

        .notice-strip strong {
            color: var(--dark);
        }

        /* ======= Data Block ======= */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .data-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 30px;
            text-align: center;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .data-card .icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            background: linear-gradient(135deg, var(--light-2), var(--white));
            border: 1px solid var(--border);
        }

        .data-card .num {
            font-size: 2rem;
            font-weight: 900;
            color: var(--dark);
            line-height: 1.2;
        }

        .data-card .label {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-top: 6px;
        }

        /* ======= Footer ======= */
        .site-footer {
            background: var(--dark);
            color: #a0a0b8;
            padding: 70px 0 0;
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
            opacity: 0.6;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 60px;
            padding-bottom: 50px;
        }

        .footer-brand .logo {
            color: var(--white);
            margin-bottom: 18px;
            font-size: 1.3rem;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-col h4 {
            color: var(--white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 22px;
            position: relative;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 24px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul a {
            color: #a0a0b8;
            font-size: 0.88rem;
            transition: var(--transition);
            position: relative;
            padding-left: 16px;
        }

        .footer-col ul a::before {
            content: '›';
            position: absolute;
            left: 0;
            color: var(--primary-light);
            font-weight: 700;
        }

        .footer-col ul a:hover {
            color: var(--white);
            padding-left: 20px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 0;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ======= Responsive ======= */
        @media screen and (max-width: 1024px) {
            :root {
                --section-pad: 70px 0;
            }

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

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

            .data-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .page-banner h1 {
                font-size: 2.6rem;
            }
        }

        @media screen and (max-width: 768px) {
            .dock-nav {
                top: 10px;
                padding: 12px 18px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 10px);
                left: 0;
                right: 0;
                background: var(--white);
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-lg);
                padding: 12px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }

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

            .nav-links li {
                margin: 0;
            }

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

            .nav-toggle {
                display: flex;
            }

            .page-banner {
                padding: 100px 0 70px;
            }

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

            .banner-stats {
                gap: 30px;
            }

            .split-feature {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .cta-banner {
                flex-direction: column;
                text-align: center;
                padding: 40px 28px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }

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

            .section-head h2 {
                font-size: 1.8rem;
            }
        }

        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .site-header {
                padding: 0 12px;
                top: 12px;
            }

            .logo {
                font-size: 0.98rem;
            }

            .logo i {
                font-size: 1.2rem;
            }

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

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

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

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

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

            .banner-stats {
                flex-direction: column;
                gap: 20px;
            }

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

            .section-head .eyebrow {
                font-size: 0.72rem;
            }

            .split-content h3 {
                font-size: 1.4rem;
            }

            .faq-q {
                padding: 18px;
                font-size: 0.9rem;
            }

            .faq-a p {
                padding: 0 18px 18px;
            }

            .notice-strip {
                flex-direction: column;
                text-align: center;
                padding: 18px;
            }
        }

/* roulang page: article */
:root {
            --primary: #4f46e5;
            --primary-light: #818cf8;
            --primary-bg: rgba(79, 70, 229, .08);
            --accent: #f59e0b;
            --accent-bg: rgba(245, 158, 11, .12);
            --bg: #f6f8fc;
            --surface: #ffffff;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-sm: 0 4px 14px rgba(2, 6, 23, .05);
            --shadow: 0 12px 34px rgba(2, 6, 23, .07);
            --shadow-lg: 0 24px 60px rgba(2, 6, 23, .12);
            --transition: .28s cubic-bezier(.4, 0, .2, 1);
            --space: 24px;
        }

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

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

        body {
            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);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        body.foundation-6 {
            line-height: 1.75;
        }

        img {
            max-width: 100%;
            display: block;
            border: 0;
        }

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

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

        button,
        input,
        select,
        textarea {
            font: inherit;
            color: inherit;
        }

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

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .08em;
            text-transform: uppercase;
            color: var(--primary);
            background: var(--primary-bg);
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 10px;
        }

        .section-eyebrow i {
            font-size: 12px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -.02em;
            line-height: 1.2;
            color: var(--text);
        }

        .section-sub {
            color: var(--text-weak);
            font-size: 15px;
            margin-top: 8px;
            max-width: 640px;
        }

        .side-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .side-title i {
            color: var(--primary);
        }

        .side-title::after {
            content: "";
            flex: 1;
            height: 2px;
            background: linear-gradient(90deg, var(--border), transparent);
            border-radius: 2px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--text-weak);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            transition: all var(--transition);
        }

        .tag:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: var(--primary-bg);
        }

        .btn-primary,
        .btn-outline,
        .btn-light,
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 700;
            padding: 12px 28px;
            border-radius: var(--radius-pill);
            border: 2px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
            text-align: center;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 10px 24px rgba(79, 70, 229, .3);
        }

        .btn-primary:hover {
            background: #4338ca;
            transform: translateY(-2px);
            box-shadow: 0 16px 34px rgba(79, 70, 229, .4);
        }

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

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

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 12px 30px rgba(0, 0, 0, .16);
        }

        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 18px 40px rgba(0, 0, 0, .2);
        }

        .btn-outline-light {
            border-color: rgba(255, 255, 255, .7);
            color: #fff;
            background: rgba(255, 255, 255, .08);
            backdrop-filter: blur(6px);
        }

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

        /* ===== Header / Dock Nav ===== */
        .site-header {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            width: 100%;
            padding: 20px 0 0;
            z-index: 60;
            pointer-events: none;
        }

        .site-header .container {
            pointer-events: auto;
        }

        .dock-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, .75);
            border-radius: var(--radius-pill);
            padding: 10px 12px 10px 26px;
            box-shadow: 0 14px 40px rgba(2, 6, 23, .1);
            transition: box-shadow var(--transition);
        }

        .dock-nav:hover {
            box-shadow: 0 18px 50px rgba(2, 6, 23, .14);
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -.01em;
            color: var(--primary);
            white-space: nowrap;
        }

        .logo i {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 17px;
            box-shadow: 0 6px 18px rgba(79, 70, 229, .35);
        }

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

        .nav-links a {
            display: inline-block;
            padding: 8px 17px;
            border-radius: var(--radius-pill);
            font-size: 14.5px;
            font-weight: 600;
            color: var(--text-weak);
            transition: all var(--transition);
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .nav-links a:hover {
            color: var(--primary);
            background: var(--primary-bg);
            border-color: rgba(79, 70, 229, .08);
        }

        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 8px 22px rgba(79, 70, 229, .35);
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border: none;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition);
            margin-left: auto;
        }

        .nav-toggle:hover {
            background: #4338ca;
            transform: rotate(90deg);
        }

        /* ===== Article Banner ===== */
        .article-banner {
            position: relative;
            background: linear-gradient(135deg, rgba(15, 23, 42, .93) 0%, rgba(30, 27, 75, .82) 60%, rgba(79, 70, 229, .68) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 170px 0 90px;
            color: #fff;
            overflow: hidden;
        }

        .article-banner::after {
            content: "";
            position: absolute;
            right: -80px;
            bottom: -80px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(245, 158, 11, .28), transparent 65%);
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13.5px;
            color: rgba(255, 255, 255, .75);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, .85);
            padding: 4px 0;
            border-bottom: 1px solid rgba(255, 255, 255, .3);
            transition: all var(--transition);
        }

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

        .breadcrumb i {
            font-size: 10px;
            color: rgba(255, 255, 255, .5);
        }

        .article-title {
            font-size: clamp(30px, 4vw, 46px);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -.02em;
            max-width: 850px;
            margin-bottom: 22px;
            text-shadow: 0 4px 22px rgba(0, 0, 0, .3);
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .16);
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            font-size: 13.5px;
            font-weight: 500;
            color: rgba(255, 255, 255, .92);
            backdrop-filter: blur(6px);
        }

        .meta-item i {
            color: var(--accent);
        }

        /* ===== Article Layout ===== */
        .article-section {
            padding: 60px 0 72px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 360px;
            gap: 40px;
            align-items: start;
        }

        .article-main .article-card {
            background: var(--surface);
            border-radius: 24px;
            box-shadow: var(--shadow);
            padding: 44px 46px;
            border: 1px solid rgba(255, 255, 255, .8);
        }

        .article-content {
            font-size: 16.5px;
            line-height: 2;
            color: #334155;
            overflow-wrap: break-word;
        }

        .article-content h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--text);
            margin: 42px 0 16px;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
            letter-spacing: -.02em;
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin: 30px 0 12px;
            line-height: 1.5;
        }

        .article-content p {
            margin-bottom: 18px;
        }

        .article-content img {
            border-radius: 16px;
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid rgba(79, 70, 229, .3);
        }

        .article-content a:hover {
            color: #4338ca;
            border-color: var(--primary);
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 20px 0;
            padding-left: 8px;
        }

        .article-content ul li,
        .article-content ol li {
            position: relative;
            padding: 6px 0 6px 28px;
            margin-bottom: 4px;
        }

        .article-content ul li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 10px;
            color: var(--primary);
            font-size: 13px;
            background: var(--primary-bg);
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .article-content ol {
            counter-reset: article-list;
        }

        .article-content ol li {
            counter-increment: article-list;
        }

        .article-content ol li::before {
            content: counter(article-list, decimal-leading-zero);
            position: absolute;
            left: 0;
            top: 8px;
            font-size: 12px;
            font-weight: 800;
            color: var(--primary);
            background: var(--primary-bg);
            width: 22px;
            height: 22px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--accent-bg);
            border-radius: 0 14px 14px 0;
            padding: 18px 22px;
            margin: 26px 0;
            color: #7c4a03;
            font-size: 15.5px;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: 12px;
            overflow: hidden;
        }

        .article-content table th {
            background: var(--primary-bg);
            color: var(--text);
            font-weight: 700;
            padding: 12px 16px;
            text-align: left;
        }

        .article-content table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 38px;
            padding-top: 26px;
            border-top: 1px dashed var(--border);
        }

        .empty-content {
            text-align: center;
            padding: 60px 20px;
        }

        .empty-content i {
            font-size: 52px;
            color: var(--border);
            margin-bottom: 18px;
        }

        .empty-content h2 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text);
        }

        .empty-content p {
            color: var(--text-weak);
            font-size: 16px;
            margin-bottom: 28px;
        }

        /* ===== Sidebar ===== */
        .article-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 110px;
        }

        .side-card {
            background: var(--surface);
            border-radius: 20px;
            padding: 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(255, 255, 255, .9);
            transition: box-shadow var(--transition);
        }

        .side-card:hover {
            box-shadow: var(--shadow);
        }

        .side-info-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .side-info-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
        }

        .side-info-item:last-child {
            border-bottom: none;
        }

        .side-info-label {
            color: var(--text-weak);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .side-info-label i {
            color: var(--primary);
            font-size: 13px;
            width: 16px;
            text-align: center;
        }

        .side-info-value {
            font-weight: 700;
            color: var(--text);
            text-align: right;
            font-size: 13.5px;
        }

        .side-nav-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .side-nav-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--bg);
            border-radius: 14px;
            padding: 12px 16px;
            font-size: 14.5px;
            font-weight: 600;
            color: var(--text);
            border: 1px solid transparent;
            transition: all var(--transition);
        }

        .side-nav-list a i {
            color: var(--primary);
            font-size: 15px;
            width: 20px;
            text-align: center;
        }

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

        .side-support-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .side-support-list a {
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 14px;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition);
        }

        .side-support-list a:last-child {
            border-bottom: none;
        }

        .side-support-list a i {
            font-size: 12px;
            color: var(--accent);
        }

        .side-support-list a:hover {
            color: var(--primary);
            padding-left: 6px;
        }

        /* ===== Related Section ===== */
        .related-section {
            background: var(--surface);
            padding: 76px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .related-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 26px;
        }

        .related-cell {
            width: calc(33.333% - 17.4px);
            min-width: 0;
        }

        .article-card {
            display: flex;
            flex-direction: column;
            background: var(--bg);
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
            height: 100%;
        }

        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(79, 70, 229, .25);
        }

        .card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #e2e8f0;
        }

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

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

        .card-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(2, 6, 23, .35), transparent 60%);
        }

        .card-badge {
            position: absolute;
            left: 14px;
            top: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(8px);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            box-shadow: 0 4px 12px rgba(0, 0, 0, .12);
        }

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

        .card-cat {
            font-size: 12.5px;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: .06em;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .card-cat i {
            font-size: 10px;
        }

        .card-title {
            font-size: 17.5px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--text);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-desc {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 18px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .card-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13.5px;
            font-weight: 700;
            color: var(--primary);
            margin-top: auto;
            transition: gap var(--transition);
        }

        .card-more i {
            font-size: 12px;
            transition: transform var(--transition);
        }

        .article-card:hover .card-more {
            gap: 12px;
        }

        .article-card:hover .card-more i {
            transform: translateX(3px);
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 76px 0;
        }

        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .faq-item {
            background: var(--surface);
            border-radius: 18px;
            padding: 26px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid transparent;
            transition: all var(--transition);
            position: relative;
        }

        .faq-item:hover {
            border-color: rgba(79, 70, 229, .2);
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .faq-item::before {
            content: "\f059";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            right: 22px;
            top: 22px;
            color: var(--primary);
            opacity: .16;
            font-size: 30px;
        }

        .faq-q {
            font-size: 16.5px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 10px;
            padding-right: 30px;
        }

        .faq-a {
            font-size: 14.5px;
            color: var(--text-weak);
            line-height: 1.9;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 50px 0 76px;
        }

        .cta-box {
            position: relative;
            background: linear-gradient(120deg, rgba(15, 23, 42, .92), rgba(30, 27, 75, .78)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-radius: 28px;
            padding: 64px 56px;
            text-align: center;
            color: #fff;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -80px;
            left: -40px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(245, 158, 11, .4), transparent 70%);
        }

        .cta-box::after {
            content: "";
            position: absolute;
            bottom: -100px;
            right: -30px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(79, 70, 229, .5), transparent 70%);
        }

        .cta-box>* {
            position: relative;
            z-index: 2;
        }

        .cta-box h2 {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -.02em;
            margin-bottom: 14px;
        }

        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, .85);
            max-width: 640px;
            margin: 0 auto 34px;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 64px 0 0;
            font-size: 14.5px;
        }

        .site-footer .logo {
            color: #fff;
            margin-bottom: 18px;
        }

        .site-footer .logo i {
            background: linear-gradient(135deg, #6366f1, #a855f7);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 50px;
            padding-bottom: 44px;
        }

        .footer-brand p {
            color: #94a3b8;
            line-height: 1.9;
            max-width: 380px;
            margin-top: 6px;
            font-size: 14px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15.5px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-col h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 32px;
            height: 3px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary-light), var(--accent));
        }

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

        .footer-col a {
            color: #94a3b8;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }

        .footer-col a::before {
            content: "\f105";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 11px;
            color: var(--primary-light);
            transition: transform var(--transition);
        }

        .footer-col a:hover {
            color: #fff;
            transform: translateX(4px);
        }

        .footer-col a:hover::before {
            transform: translateX(3px);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: #64748b;
        }

        .footer-bottom p {
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: minmax(0, 1fr);
            }

            .article-side {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .related-cell {
                width: calc(50% - 13px);
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 860px) {
            .dock-nav {
                flex-wrap: wrap;
                border-radius: 22px;
                padding: 12px 14px 12px 18px;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
                padding: 10px 0 4px;
                border-top: 1px solid var(--border);
                margin-top: 10px;
            }

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

            .nav-links a {
                text-align: center;
                padding: 13px 16px;
                font-size: 15px;
            }

            .article-banner {
                padding: 150px 0 70px;
            }

            .article-title {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }

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

            .section-head {
                margin-bottom: 28px;
            }

            .article-main .article-card {
                padding: 28px 24px;
                border-radius: 18px;
            }

            .article-content {
                font-size: 16px;
                line-height: 1.95;
            }

            .article-content h2 {
                font-size: 22px;
                padding-left: 12px;
                margin: 32px 0 14px;
            }

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

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

            .cta-box {
                padding: 44px 24px;
                border-radius: 22px;
            }

            .cta-box h2 {
                font-size: 27px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 34px;
            }

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

        @media (max-width: 640px) {
            .related-cell {
                width: 100%;
            }

            .btn-primary,
            .btn-outline,
            .btn-light,
            .btn-outline-light {
                padding: 11px 22px;
                font-size: 14px;
                width: 100%;
            }

            .cta-buttons {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }

            .container {
                padding: 0 14px;
            }

            .logo {
                font-size: 17px;
            }

            .logo i {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .dock-nav {
                padding-left: 14px;
            }

            .article-banner {
                padding: 140px 0 56px;
            }

            .article-title {
                font-size: 27px;
            }

            .meta-item {
                font-size: 12.5px;
                padding: 5px 12px;
            }

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

            .article-content h3 {
                font-size: 18px;
            }

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

            .section-eyebrow {
                font-size: 12px;
            }

            .faq-item {
                padding: 22px 18px;
            }

            .faq-q {
                font-size: 15.5px;
            }

            .cta-box h2 {
                font-size: 24px;
            }

            .cta-box p {
                font-size: 14.5px;
            }

            .footer-top {
                gap: 28px;
                padding-bottom: 30px;
            }

            .footer-col h4 {
                margin-bottom: 14px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #4f46e5;
            --primary-dark: #4338ca;
            --gradient: #7c3aed;
            --accent: #f59e0b;
            --success: #10b981;
            --bg: #f4f6fb;
            --card: #ffffff;
            --text: #0f172a;
            --text-soft: #526077;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow-sm: 0 4px 16px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 10px 36px rgba(15, 23, 42, 0.10);
            --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.14);
            --transition: all .25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

        ul {
            list-style: none;
        }

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

        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: #ffffff;
        }

        .section-head {
            max-width: 620px;
            margin: 0 auto 44px;
            text-align: center;
        }

        .section-head .tag {
            display: inline-block;
            padding: 5px 16px;
            background: #eef2ff;
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .section-head h2 {
            font-size: 34px;
            line-height: 1.3;
            margin-bottom: 10px;
            font-weight: 800;
            color: var(--text);
        }

        .section-head p {
            color: var(--text-soft);
            font-size: 16px;
        }

        /* ===== Header / Dock Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 18px 0 0;
            background: transparent;
        }

        .dock-nav {
            display: flex;
            align-items: center;
            gap: 20px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border);
            border-radius: 60px;
            padding: 12px 18px 12px 24px;
            box-shadow: var(--shadow-sm);
            max-width: 1200px;
            margin: 0 auto;
        }

        .logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
            transition: var(--transition);
        }

        .logo i {
            font-size: 22px;
            color: var(--primary);
        }

        .logo:hover {
            opacity: 0.85;
        }

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

        .nav-links a {
            display: inline-block;
            padding: 9px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            transition: var(--transition);
            position: relative;
        }

        .nav-links a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(79, 70, 229, 0.25);
        }

        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 0;
            color: var(--text);
            font-size: 20px;
            padding: 8px;
            border-radius: 50%;
            cursor: pointer;
            margin-left: auto;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: #f1f5f9;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 110px 0 96px;
            background:
                linear-gradient(120deg, rgba(15, 23, 42, 0.78), rgba(79, 70, 229, 0.55)),
                url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            color: #fff;
            text-align: center;
        }

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

        .page-banner .eyebrow {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            letter-spacing: 1px;
            margin-bottom: 18px;
        }

        .page-banner h1 {
            font-size: 44px;
            line-height: 1.25;
            margin-bottom: 16px;
            font-weight: 800;
        }

        .page-banner p {
            max-width: 680px;
            margin: 0 auto 30px;
            font-size: 17px;
            color: rgba(255, 255, 255, 0.9);
        }

        .page-banner .btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 700;
            line-height: 1;
            border: 0;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            background: var(--primary);
            color: #fff;
            box-shadow: 0 12px 28px rgba(79, 70, 229, 0.35);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.75);
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-3px);
        }

        .btn-dark {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(79, 70, 229, 0.25);
        }

        .btn-dark:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(79, 70, 229, 0.35);
        }

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

        .btn-light-border:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        :focus-visible {
            outline: 3px solid rgba(79, 70, 229, 0.4);
            outline-offset: 2px;
        }

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

        .feature-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px 26px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .feature-icon {
            width: 54px;
            height: 54px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #4f46e5, #7c3aed);
            border-radius: 14px;
            color: #fff;
            font-size: 22px;
            margin-bottom: 18px;
        }

        .feature-card h3 {
            font-size: 18px;
            margin-bottom: 8px;
            font-weight: 700;
            color: var(--text);
        }

        .feature-card p {
            color: var(--text-soft);
            font-size: 14px;
            margin: 0;
            line-height: 1.7;
        }

        /* ===== Cover Cards ===== */
        .cover-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .cover-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(79, 70, 229, 0.4);
        }

        .cover-media {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: #eef2ff;
        }

        .cover-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s ease;
        }

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

        .cover-info {
            padding: 22px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }

        .cover-info h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin: 0;
        }

        .cover-info p {
            color: var(--text-soft);
            font-size: 14px;
            margin: 0;
            line-height: 1.6;
        }

        .cover-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            margin-top: auto;
            padding-top: 8px;
            transition: var(--transition);
        }

        .cover-link i {
            transition: transform .2s;
        }

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

        /* ===== Content List ===== */
        .post-list {
            display: flex;
            flex-direction: column;
            max-width: 980px;
            margin: 0 auto;
        }

        .post-item {
            display: flex;
            gap: 22px;
            align-items: flex-start;
            padding: 26px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .post-item:last-child {
            border-bottom: 0;
        }

        .post-icon {
            width: 50px;
            height: 50px;
            flex-shrink: 0;
            background: #eef2ff;
            color: var(--primary);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            transition: var(--transition);
        }

        .post-item:hover .post-icon {
            background: var(--primary);
            color: #fff;
        }

        .post-info {
            flex: 1;
        }

        .post-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 6px;
            flex-wrap: wrap;
        }

        .post-tag {
            background: #f1f5f9;
            color: var(--text-soft);
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
        }

        .post-badge {
            background: var(--accent);
            color: #fff;
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
        }

        .post-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin: 0;
            line-height: 1.5;
        }

        .post-title a {
            color: inherit;
            transition: var(--transition);
        }

        .post-title a:hover {
            color: var(--primary);
        }

        .post-summary {
            color: var(--text-soft);
            font-size: 14px;
            margin-top: 4px;
            line-height: 1.6;
        }

        .post-date {
            font-size: 13px;
            color: #94a3b8;
        }

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

        .step-card {
            position: relative;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .step-num {
            width: 46px;
            height: 46px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            border-radius: 12px;
            font-size: 16px;
            margin-bottom: 18px;
        }

        .step-card:nth-child(2) .step-num {
            background: var(--gradient);
        }

        .step-card:nth-child(3) .step-num {
            background: var(--accent);
        }

        .step-card:nth-child(4) .step-num {
            background: var(--success);
        }

        .step-card h3 {
            font-size: 17px;
            margin-bottom: 8px;
            font-weight: 700;
            color: var(--text);
        }

        .step-card p {
            color: var(--text-soft);
            font-size: 14px;
            margin: 0;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .accordion {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 16px;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .accordion-item.is-active {
            border-color: rgba(79, 70, 229, 0.5);
            box-shadow: var(--shadow-md);
        }

        .accordion-title {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 22px;
            font-weight: 700;
            font-size: 16px;
            color: var(--text) !important;
            background: transparent !important;
            border-bottom: 1px solid transparent;
            margin: 0;
        }

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

        .accordion-title::before {
            content: none !important;
        }

        .accordion-title::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--primary);
            transition: transform .2s;
            margin-left: 14px;
            font-size: 14px;
        }

        .accordion-item.is-active .accordion-title::after {
            transform: rotate(180deg);
        }

        .accordion-content {
            padding: 0 22px 20px;
            color: var(--text-soft);
            font-size: 15px;
            line-height: 1.8;
        }

        .accordion-content p {
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta-block {
            position: relative;
            background:
                linear-gradient(120deg, rgba(79, 70, 229, 0.94), rgba(124, 58, 237, 0.88)),
                url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            border-radius: 28px;
            padding: 70px 40px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }

        .cta-block h2 {
            font-size: 34px;
            margin-bottom: 14px;
            font-weight: 800;
        }

        .cta-block p {
            max-width: 580px;
            margin: 0 auto 30px;
            font-size: 16px;
            color: rgba(255, 255, 255, 0.92);
        }

        .cta-block .btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 60px 0 0;
            margin-top: 80px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo {
            color: #ffffff;
            font-size: 20px;
            margin-bottom: 14px;
            display: inline-flex;
        }

        .footer-brand .logo i {
            color: #a5b4fc;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
            max-width: 420px;
            color: #94a3b8;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 16px;
            font-weight: 700;
        }

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

        .footer-col a {
            color: #94a3b8;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: #64748b;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .page-banner h1 {
                font-size: 36px;
            }
        }

        @media (max-width: 900px) {
            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 14px);
                left: 24px;
                right: 24px;
                background: #fff;
                border: 1px solid var(--border);
                border-radius: 20px;
                box-shadow: var(--shadow-md);
                padding: 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                max-height: none;
            }

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

            .nav-links a {
                display: block;
                text-align: center;
                padding: 12px 16px;
                border-radius: 12px;
            }

            .nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }

            .site-header {
                padding-top: 12px;
            }

            .dock-nav {
                flex-wrap: wrap;
                padding: 10px 16px;
                border-radius: 30px;
            }

            .logo {
                font-size: 17px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }

            .page-banner {
                padding: 80px 0 60px;
            }

            .page-banner h1 {
                font-size: 30px;
            }

            .page-banner p {
                font-size: 15px;
            }

            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }

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

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

            .cta-block {
                padding: 50px 24px;
                border-radius: 20px;
            }

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

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

        @media (max-width: 520px) {
            .grid-4 {
                grid-template-columns: 1fr;
            }

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

            .post-item {
                flex-direction: column;
                gap: 12px;
            }

            .page-banner h1 {
                font-size: 25px;
            }

            .page-banner p {
                font-size: 14px;
            }

            .cta-block p {
                font-size: 14px;
            }

            .btn {
                padding: 12px 22px;
                font-size: 14px;
            }

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

/* roulang page: category3 */
:root {
            --primary: #4f46e5;
            --primary-dark: #4338ca;
            --primary-light: #eef2ff;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg: #f8fafc;
            --bg-soft: #f1f5f9;
            --dark: #0f172a;
            --card: #ffffff;
            --text: #0f172a;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
            --shadow: 0 12px 32px rgba(15, 23, 42, 0.1);
            --shadow-lg: 0 20px 50px rgba(79, 70, 229, 0.16);
            --transition: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

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

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

        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(79, 70, 229, 0.35);
            outline-offset: 2px;
            border-radius: 12px;
        }

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

        .section {
            padding: 80px 0;
        }

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

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

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

        .section-head.center p {
            margin-right: auto;
            margin-left: auto;
        }

        .section-head h2 {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
        }

        .section-head p {
            color: var(--muted);
            max-width: 680px;
            margin-top: 10px;
            font-size: 1rem;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .eyebrow.light {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 24px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.95rem;
            line-height: 1;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn i {
            font-size: 0.9em;
        }

        .btn-light {
            background: #fff;
            color: var(--dark);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.14);
        }

        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 30px rgba(0, 0, 0, 0.2);
        }

        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.6);
            color: #fff;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-2px);
        }

        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 32px rgba(0, 0, 0, 0.2);
        }

        .site-header {
            position: relative;
            padding: 24px 0 0;
            z-index: 50;
        }

        .dock-nav {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(14px);
            border: 1px solid rgba(226, 232, 240, 0.9);
            border-radius: 60px;
            padding: 12px 18px 12px 24px;
            box-shadow: var(--shadow-sm);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--text);
            flex-shrink: 0;
        }

        .logo i {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
        }

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

        .nav-links a {
            padding: 10px 16px;
            border-radius: 999px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--muted);
            display: block;
        }

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

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

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text);
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
        }

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

        .page-hero {
            margin-top: 24px;
            padding: 90px 48px;
            border-radius: 32px;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.94), rgba(79, 70, 229, 0.86)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            position: relative;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 18px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.55);
        }

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

        .page-hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.4rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .page-hero .lead {
            font-size: 1.1rem;
            max-width: 720px;
            margin: 18px 0 32px;
            color: rgba(255, 255, 255, 0.88);
        }

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

        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 40px;
        }

        .filter-tag {
            padding: 10px 20px;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--muted);
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .filter-tag.active {
            background: var(--dark);
            color: #fff;
            border-color: var(--dark);
        }

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

        .event-card {
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .event-cover {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

        .event-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

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

        .event-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 23, 42, 0.82);
            backdrop-filter: blur(6px);
            color: #fff;
            padding: 6px 12px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .event-meta {
            color: var(--muted);
            font-size: 0.84rem;
            display: flex;
            gap: 14px;
            margin-bottom: 10px;
            align-items: center;
        }

        .event-meta i {
            color: var(--primary);
            margin-right: 4px;
        }

        .event-body h3 {
            font-size: 1.16rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .event-body p {
            color: var(--muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

        .event-link {
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-top: 1px solid var(--border);
            padding-top: 16px;
            transition: var(--transition);
        }

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

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

        .rank-wrap {
            background: var(--dark);
            border-radius: 32px;
            padding: 60px;
            color: #fff;
        }

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

        .rank-head h2 {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .rank-head p {
            color: rgba(255, 255, 255, 0.7);
            max-width: 640px;
            margin-top: 10px;
        }

        .rank-grid {
            display: grid;
            grid-template-columns: 1.25fr 1fr;
            gap: 44px;
            align-items: center;
        }

        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 16px;
            padding: 16px 18px;
            transition: var(--transition);
        }

        .rank-item:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateX(4px);
        }

        .rank-num {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .rank-item:nth-child(1) .rank-num {
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            color: var(--dark);
        }

        .rank-item:nth-child(2) .rank-num {
            background: #94a3b8;
            color: var(--dark);
        }

        .rank-item:nth-child(3) .rank-num {
            background: #b45309;
            color: #fff;
        }

        .rank-info {
            flex: 1;
        }

        .rank-info h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 2px;
        }

        .rank-meta {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.84rem;
        }

        .rank-tag {
            background: rgba(255, 255, 255, 0.12);
            padding: 6px 12px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            white-space: nowrap;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 18px;
            padding: 26px;
            transition: var(--transition);
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 2.1rem;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
        }

        .stat-label {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            margin-top: 6px;
        }

        .stat-icon {
            color: var(--accent);
            font-size: 1.3rem;
            margin-bottom: 10px;
        }

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

        .step-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 30px;
            position: relative;
            transition: var(--transition);
        }

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

        .step-num {
            position: absolute;
            top: 22px;
            right: 24px;
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--bg-soft);
            line-height: 1;
        }

        .step-icon {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .step-card:hover .step-icon {
            background: var(--primary);
            color: #fff;
        }

        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

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

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

        .feature-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .feature-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

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

        .feature-overlay {
            background: linear-gradient(to top, rgba(15, 23, 42, 0.92), rgba(15, 23, 42, 0.1));
            padding: 30px;
            width: 100%;
            color: #fff;
            position: relative;
        }

        .feature-overlay .feature-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.16);
            padding: 6px 12px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .feature-overlay h3 {
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 6px;
        }

        .feature-overlay p {
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.92rem;
        }

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

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 18px;
            padding: 22px 26px;
            margin-bottom: 16px;
            transition: var(--transition);
            cursor: pointer;
        }

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

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

        .faq-item summary {
            font-weight: 700;
            font-size: 1.05rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            list-style: none;
            cursor: pointer;
        }

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

        .faq-item summary::after {
            content: '\f078';
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

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

        .faq-answer {
            padding-top: 14px;
            color: var(--muted);
            line-height: 1.75;
            border-top: 1px solid var(--border);
            margin-top: 14px;
        }

        .cta-box {
            background: linear-gradient(135deg, var(--primary), #7c3aed);
            border-radius: 28px;
            padding: 48px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }

        .cta-box h2 {
            font-size: 1.75rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 8px;
        }

        .cta-box p {
            opacity: 0.9;
            max-width: 520px;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 28px;
            margin-top: 40px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

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

        .footer-brand .logo i {
            background: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }

        .footer-brand p {
            color: rgba(255, 255, 255, 0.62);
            max-width: 360px;
            font-size: 0.94rem;
            line-height: 1.8;
        }

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

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

        .footer-col a {
            color: rgba(255, 255, 255, 0.62);
            font-size: 0.93rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 28px;
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.85rem;
            flex-wrap: wrap;
            gap: 10px;
        }

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

            .rank-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

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

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

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

            .cta-box {
                flex-direction: column;
                align-items: flex-start;
            }

            .page-hero {
                padding: 72px 32px;
            }
        }

        @media (max-width: 820px) {
            .nav-toggle {
                display: inline-flex;
            }

            .dock-nav {
                padding: 10px 14px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 12px);
                left: 0;
                right: 0;
                background: #fff;
                border-radius: 20px;
                padding: 12px;
                box-shadow: var(--shadow);
                flex-direction: column;
                gap: 4px;
                z-index: 100;
            }

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

            .nav-links a {
                padding: 14px 18px;
                text-align: center;
                font-size: 0.95rem;
            }

            .section {
                padding: 60px 0;
            }

            .page-hero {
                padding: 56px 24px;
                border-radius: 24px;
            }

            .rank-wrap {
                padding: 40px 28px;
                border-radius: 24px;
            }

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

            .filter-bar {
                flex-wrap: nowrap;
                overflow-x: auto;
                padding-bottom: 6px;
                -webkit-overflow-scrolling: touch;
            }

            .filter-tag {
                flex-shrink: 0;
            }
        }

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

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

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

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

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

            .cta-box {
                padding: 36px 24px;
                border-radius: 22px;
            }

            .page-hero h1 {
                font-size: 1.85rem;
            }

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

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

            .hero-actions .btn {
                width: 100%;
            }

            .cta-actions {
                width: 100%;
            }

            .cta-actions .btn {
                width: 100%;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

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

            .rank-wrap {
                padding: 32px 18px;
            }

            .logo {
                font-size: 1.05rem;
            }

            .logo i {
                width: 34px;
                height: 34px;
            }

            .page-hero {
                margin-top: 16px;
                padding: 44px 20px;
            }
        }