/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6C5CE7;
            --primary-dark: #5A4BD1;
            --primary-light: #A29BFE;
            --secondary: #FF6B35;
            --secondary-light: #FF8F65;
            --accent: #00CEC9;
            --dark: #0F0E17;
            --dark-alt: #1A1A2E;
            --light: #F8F9FA;
            --light-alt: #F0F2F5;
            --text: #2D3436;
            --text-light: #636E72;
            --text-muted: #B2BEC3;
            --bg: #FFFFFF;
            --bg-alt: #F0F2F5;
            --border: #E0E0E0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(108, 92, 231, 0.10);
            --shadow-lg: 0 12px 48px rgba(108, 92, 231, 0.15);
            --shadow-hover: 0 8px 32px rgba(108, 92, 231, 0.20);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --nav-top-height: 56px;
            --nav-bottom-height: 48px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button:focus-visible,
        input:focus-visible,
        a:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin-top: 0;
            font-weight: 700;
            line-height: 1.3;
            color: var(--dark);
        }
        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }

        /* ===== 容器 ===== */
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== 双层导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1070;
            background: var(--bg);
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }
        .nav-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-top-height);
            padding: 0 20px;
            max-width: var(--container-max);
            margin: 0 auto;
            gap: 16px;
        }
        .nav-top .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .nav-top .logo i {
            font-size: 1.5rem;
            color: var(--secondary);
        }
        .nav-top .logo span {
            color: var(--dark);
        }
        .nav-top .logo:hover {
            color: var(--primary-dark);
        }
        .nav-search {
            flex: 1;
            max-width: 420px;
            position: relative;
        }
        .nav-search .form-control {
            border-radius: 50px;
            border: 2px solid var(--border);
            padding: 0.45rem 1rem 0.45rem 2.5rem;
            font-size: 0.9rem;
            background: var(--light);
            transition: var(--transition);
            height: 40px;
        }
        .nav-search .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(108, 92, 231, 0.12);
            background: var(--bg);
        }
        .nav-search .search-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 0.95rem;
            pointer-events: none;
        }
        .nav-top .cta-btn {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 0.45rem 1.5rem;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
            height: 40px;
        }
        .nav-top .cta-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow);
            color: #fff;
        }
        .nav-top .cta-btn i {
            font-size: 0.85rem;
        }
        .nav-bottom {
            background: var(--dark-alt);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .nav-bottom-inner {
            display: flex;
            align-items: center;
            height: var(--nav-bottom-height);
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            gap: 4px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-bottom-inner::-webkit-scrollbar {
            display: none;
        }
        .nav-bottom-inner .nav-link {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            transition: var(--transition);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
            border: 1px solid transparent;
        }
        .nav-bottom-inner .nav-link i {
            font-size: 0.8rem;
        }
        .nav-bottom-inner .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.10);
        }
        .nav-bottom-inner .nav-link.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(108, 92, 231, 0.30);
        }
        .nav-bottom-inner .nav-link.active i {
            color: rgba(255, 255, 255, 0.9);
        }
        /* 移动端菜单切换按钮（桌面隐藏） */
        .nav-toggle-mobile {
            display: none;
            background: none;
            border: none;
            color: var(--dark);
            font-size: 1.4rem;
            padding: 4px 8px;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .nav-top .nav-search {
                display: none;
            }
            .nav-top .cta-btn span {
                display: none;
            }
            .nav-top .cta-btn {
                padding: 0.45rem 1rem;
            }
            .nav-toggle-mobile {
                display: block;
            }
            .nav-bottom-inner {
                gap: 2px;
                padding: 0 12px;
            }
            .nav-bottom-inner .nav-link {
                font-size: 0.8rem;
                padding: 0.3rem 0.9rem;
            }
            .nav-bottom-inner .nav-link i {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .nav-top {
                padding: 0 12px;
                gap: 8px;
            }
            .nav-top .logo {
                font-size: 1.1rem;
            }
            .nav-bottom-inner .nav-link {
                font-size: 0.75rem;
                padding: 0.25rem 0.7rem;
            }
        }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            background: linear-gradient(135deg, var(--dark-alt) 0%, #16213E 50%, var(--dark) 100%);
            padding: 80px 0 70px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -30%;
            width: 80%;
            height: 140%;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -20%;
            right: -10%;
            width: 60%;
            height: 100%;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(108, 92, 231, 0.20);
            border: 1px solid rgba(108, 92, 231, 0.30);
            border-radius: 50px;
            padding: 0.3rem 1.2rem;
            font-size: 0.85rem;
            color: var(--primary-light);
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-content .hero-badge i {
            font-size: 0.75rem;
        }
        .hero-content h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .hero-content .hero-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-content .hero-actions .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 0.8rem 2.4rem;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.35);
        }
        .hero-content .hero-actions .btn-primary-custom:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(108, 92, 231, 0.45);
            color: #fff;
        }
        .hero-content .hero-actions .btn-outline-custom {
            background: transparent;
            color: rgba(255, 255, 255, 0.85);
            border: 2px solid rgba(255, 255, 255, 0.25);
            border-radius: 50px;
            padding: 0.8rem 2.2rem;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .hero-content .hero-actions .btn-outline-custom:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.45);
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 50px;
            flex-wrap: wrap;
        }
        .hero-stats .stat-item {
            text-align: center;
            color: rgba(255, 255, 255, 0.85);
        }
        .hero-stats .stat-item .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            display: block;
            line-height: 1.2;
        }
        .hero-stats .stat-item .stat-number .unit {
            font-size: 1rem;
            color: var(--primary-light);
            font-weight: 600;
        }
        .hero-stats .stat-item .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 2px;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 60px 0 50px;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-content p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stats .stat-item .stat-number {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .hero-content .hero-actions .btn-primary-custom,
            .hero-content .hero-actions .btn-outline-custom {
                padding: 0.6rem 1.6rem;
                font-size: 0.95rem;
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stats .stat-item .stat-number {
                font-size: 1.2rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section-block {
            padding: 80px 0;
        }
        .section-block-alt {
            background: var(--bg-alt);
        }
        .section-block-dark {
            background: var(--dark-alt);
            color: #fff;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--dark);
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title-dark h2 {
            color: #fff;
        }
        .section-title-dark p {
            color: rgba(255, 255, 255, 0.65);
        }
        .divider-custom {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin: 16px auto 0;
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 56px 0;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .section-title {
                margin-bottom: 32px;
            }
        }

        /* ===== 核心优势卡片 ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .advantage-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .advantage-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .advantage-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.25);
        }
        .advantage-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--dark);
        }
        .advantage-card p {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        @media (max-width: 992px) {
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .advantages-grid {
                grid-template-columns: 1fr;
            }
            .advantage-card {
                padding: 28px 20px;
            }
        }

        /* ===== 热门游戏分类 ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            cursor: pointer;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .category-card .cat-bg {
            height: 140px;
            background: linear-gradient(135deg, var(--primary), var(--dark-alt));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.8rem;
            color: rgba(255, 255, 255, 0.25);
            transition: var(--transition);
        }
        .category-card:nth-child(2) .cat-bg {
            background: linear-gradient(135deg, var(--secondary), #E17055);
        }
        .category-card:nth-child(3) .cat-bg {
            background: linear-gradient(135deg, var(--accent), #00A8A8);
        }
        .category-card:nth-child(4) .cat-bg {
            background: linear-gradient(135deg, #FD79A8, #E84393);
        }
        .category-card:nth-child(5) .cat-bg {
            background: linear-gradient(135deg, #FDCB6E, #E17055);
        }
        .category-card:nth-child(6) .cat-bg {
            background: linear-gradient(135deg, #74B9FF, #0984E3);
        }
        .category-card:hover .cat-bg {
            transform: scale(1.03);
        }
        .category-card .cat-info {
            padding: 18px 20px 20px;
        }
        .category-card .cat-info h3 {
            font-size: 1.1rem;
            margin-bottom: 4px;
            color: var(--dark);
        }
        .category-card .cat-info p {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        .category-card .cat-info .cat-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            padding: 0.15rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            margin-top: 8px;
        }
        .category-card:nth-child(2) .cat-info .cat-tag {
            background: var(--secondary);
        }
        .category-card:nth-child(3) .cat-info .cat-tag {
            background: var(--accent);
            color: var(--dark);
        }
        .category-card:nth-child(4) .cat-info .cat-tag {
            background: #E84393;
        }
        .category-card:nth-child(5) .cat-info .cat-tag {
            background: #E17055;
        }
        .category-card:nth-child(6) .cat-info .cat-tag {
            background: #0984E3;
        }
        @media (max-width: 992px) {
            .categories-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .categories-grid {
                grid-template-columns: 1fr;
            }
            .category-card .cat-bg {
                height: 110px;
                font-size: 2.2rem;
            }
        }

        /* ===== 最新资讯列表 (CMS) ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
            transform: translateX(4px);
        }
        .news-item .news-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--light-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
            font-size: 1.1rem;
        }
        .news-item .news-content {
            flex: 1;
            min-width: 0;
        }
        .news-item .news-content h4 {
            font-size: 1.05rem;
            margin-bottom: 4px;
            font-weight: 600;
        }
        .news-item .news-content h4 a {
            color: var(--dark);
        }
        .news-item .news-content h4 a:hover {
            color: var(--primary);
        }
        .news-item .news-content .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .news-item .news-content .news-meta i {
            margin-right: 3px;
        }
        .news-item .news-content .news-meta .cat-badge {
            background: var(--light-alt);
            padding: 0.1rem 0.7rem;
            border-radius: 50px;
            color: var(--text-light);
            font-weight: 500;
        }
        .news-item .news-content .desc {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .news-empty i {
            font-size: 2.4rem;
            display: block;
            margin-bottom: 12px;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .news-item {
                flex-direction: column;
                padding: 16px 18px;
                gap: 12px;
            }
            .news-item .news-num {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
            .news-item .news-content h4 {
                font-size: 0.95rem;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-4px);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--primary-light);
            margin-bottom: 12px;
        }
        .stat-card .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-card .stat-num .unit {
            font-size: 1.1rem;
            color: var(--primary-light);
            font-weight: 600;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 4px;
        }
        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-card .stat-num {
                font-size: 1.6rem;
            }
        }

        /* ===== 标签云 ===== */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .tags-cloud .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 0.4rem 1.2rem;
            font-size: 0.9rem;
            color: var(--text-light);
            transition: var(--transition);
            cursor: default;
        }
        .tags-cloud .tag-item i {
            font-size: 0.75rem;
            color: var(--primary);
        }
        .tags-cloud .tag-item:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(108, 92, 231, 0.04);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .tags-cloud .tag-item.hot {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .tags-cloud .tag-item.hot i {
            color: rgba(255, 255, 255, 0.8);
        }
        .tags-cloud .tag-item.hot:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--dark);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-item .faq-question:hover {
            color: var(--primary);
        }
        .faq-item .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
        }
        .faq-item .faq-answer p:last-child {
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .faq-item .faq-question {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 18px 14px;
                font-size: 0.9rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 60%;
            height: 160%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-section .cta-btn-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-section .cta-btn-group .btn-cta-primary {
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: 50px;
            padding: 0.85rem 2.6rem;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
        }
        .cta-section .cta-btn-group .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
            color: var(--primary-dark);
        }
        .cta-section .cta-btn-group .btn-cta-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.35);
            border-radius: 50px;
            padding: 0.85rem 2.4rem;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-section .cta-btn-group .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .cta-section .cta-btn-group .btn-cta-primary,
            .cta-section .cta-btn-group .btn-cta-outline {
                width: 100%;
                justify-content: center;
                padding: 0.7rem 1.6rem;
                font-size: 0.95rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 32px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .site-footer .footer-brand .logo-footer {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand .logo-footer i {
            color: var(--secondary);
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            max-width: 300px;
            line-height: 1.6;
        }
        .site-footer .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary-light);
            transform: translateX(4px);
        }
        .site-footer .footer-col ul li a i {
            font-size: 0.65rem;
            color: var(--primary-light);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 992px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 640px) {
            .site-footer {
                padding: 40px 0 24px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 回到顶部 ===== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            border: none;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            transition: var(--transition);
            z-index: 1050;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
        }
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            color: #fff;
        }
        @media (max-width: 768px) {
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }
        }

        /* ===== Bootstrap 覆写 ===== */
        .btn {
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow);
        }
        .card {
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
        }
        .card .card-img-top {
            border-radius: var(--radius) var(--radius) 0 0;
        }
        .badge {
            border-radius: 50px;
            font-weight: 500;
            padding: 0.25rem 0.75rem;
        }
        .badge-primary {
            background: var(--primary);
        }

        /* ===== 额外响应式 ===== */
        @media (max-width: 520px) {
            .container-custom {
                padding: 0 12px;
            }
            .section-block {
                padding: 40px 0;
            }
            .section-title h2 {
                font-size: 1.3rem;
            }
            .section-title p {
                font-size: 0.9rem;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e74c3c;
            --primary-dark: #c0392b;
            --primary-light: #fadbd8;
            --accent: #f39c12;
            --accent-dark: #e67e22;
            --bg-dark: #0b0e14;
            --bg-darker: #070a0f;
            --bg-card: #151a24;
            --bg-card-hover: #1c2331;
            --bg-body: #0f131c;
            --text-primary: #f0f2f5;
            --text-secondary: #a0a8b8;
            --text-muted: #6b7280;
            --border-color: #2a3344;
            --border-light: #3a4559;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 18px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.6);
            --transition: 0.25s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --nav-height-top: 64px;
            --nav-height-bottom: 48px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }

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

        /* ===== Header / 双层导航 ===== */
        .site-header {
            background: var(--bg-dark);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
        }
        .nav-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            height: var(--nav-height-top);
            max-width: var(--container-max);
            margin: 0 auto;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            color: var(--text-primary);
        }
        .nav-search {
            flex: 1;
            max-width: 480px;
            position: relative;
        }
        .nav-search .search-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 0.9rem;
            pointer-events: none;
        }
        .nav-search input {
            width: 100%;
            padding: 8px 16px 8px 40px;
            border-radius: 30px;
            border: 1px solid var(--border-color);
            background: var(--bg-card);
            color: var(--text-primary);
            font-size: 0.9rem;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }
        .nav-search input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.2);
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 30px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            text-decoration: none;
            transition: transform var(--transition), box-shadow var(--transition);
            flex-shrink: 0;
        }
        .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(231, 76, 60, 0.35);
            color: #fff !important;
        }
        .cta-btn i {
            font-size: 1.1rem;
        }

        /* 移动端菜单按钮 */
        .nav-toggle-mobile {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            padding: 4px 8px;
            cursor: pointer;
        }

        /* 底部导航栏 */
        .nav-bottom {
            border-top: 1px solid var(--border-color);
            background: var(--bg-darker);
        }
        .nav-bottom-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 0 24px;
            height: var(--nav-height-bottom);
            max-width: var(--container-max);
            margin: 0 auto;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .nav-bottom-inner::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: background var(--transition), color var(--transition);
            text-decoration: none;
        }
        .nav-link i {
            font-size: 0.85rem;
        }
        .nav-link:hover {
            background: rgba(231, 76, 60, 0.12);
            color: var(--text-primary);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-link.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        /* ===== 文章详情页 ===== */
        .article-wrapper {
            padding: 48px 0 64px;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .article-breadcrumb a:hover {
            color: var(--accent);
        }
        .article-breadcrumb .sep {
            color: var(--border-light);
        }
        .article-breadcrumb .current {
            color: var(--text-secondary);
        }

        .article-header {
            margin-bottom: 32px;
        }
        .article-header h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            align-items: center;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-color);
        }
        .article-meta .badge-cat {
            display: inline-block;
            padding: 3px 14px;
            border-radius: 30px;
            background: var(--primary);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .article-meta i {
            margin-right: 6px;
            color: var(--text-muted);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
        }

        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 40px 48px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
            line-height: 1.9;
            font-size: 1.05rem;
            color: var(--text-secondary);
        }
        .article-content p {
            margin-bottom: 1.2rem;
            color: var(--text-secondary);
        }
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            margin-top: 1.8rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        .article-content h2 {
            font-size: 1.6rem;
            border-left: 4px solid var(--primary);
            padding-left: 16px;
        }
        .article-content h3 {
            font-size: 1.3rem;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 1.2rem;
            padding-left: 24px;
            color: var(--text-secondary);
        }
        .article-content ul {
            list-style: disc;
        }
        .article-content ol {
            list-style: decimal;
        }
        .article-content li {
            margin-bottom: 6px;
        }
        .article-content a {
            color: var(--accent);
            text-decoration: underline;
        }
        .article-content a:hover {
            color: var(--accent-dark);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            margin: 1.5rem 0;
            background: rgba(231, 76, 60, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 1.5rem auto;
            box-shadow: var(--shadow);
        }
        .article-content .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        .article-content th,
        .article-content td {
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            text-align: left;
        }
        .article-content th {
            background: var(--bg-dark);
            color: var(--text-primary);
            font-weight: 600;
        }
        .article-content td {
            color: var(--text-secondary);
        }

        .article-footer-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-footer-nav a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 30px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: background var(--transition), border-color var(--transition), color var(--transition);
        }
        .article-footer-nav a:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            color: var(--text-primary);
        }
        .article-footer-nav .back-home {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .article-footer-nav .back-home:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
        }

        .article-not-found {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
        }
        .article-not-found i {
            font-size: 3.5rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .article-not-found h2 {
            font-size: 1.6rem;
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-not-found .btn-home {
            display: inline-block;
            padding: 10px 32px;
            border-radius: 30px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition);
        }
        .article-not-found .btn-home:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .logo-footer {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .logo-footer i {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-col ul li a i {
            font-size: 0.7rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-col ul li a:hover i {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .article-content {
                padding: 32px 28px;
            }
            .article-header h1 {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            .nav-top {
                padding: 0 16px;
                height: 56px;
            }
            .nav-toggle-mobile {
                display: block;
                order: 0;
            }
            .logo {
                order: 1;
                font-size: 1.2rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
            .nav-search {
                display: none !important;
            }
            .cta-btn {
                order: 2;
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .cta-btn span {
                display: none;
            }
            .nav-bottom {
                border-top: none;
            }
            .nav-bottom-inner {
                flex-wrap: nowrap;
                overflow-x: auto;
                padding: 8px 16px;
                height: auto;
                gap: 6px;
            }
            .nav-link {
                font-size: 0.82rem;
                padding: 5px 14px;
            }
            .article-wrapper {
                padding: 32px 0 48px;
            }
            .article-header h1 {
                font-size: 1.5rem;
            }
            .article-content {
                padding: 24px 18px;
                font-size: 0.98rem;
            }
            .article-content h2 {
                font-size: 1.3rem;
            }
            .article-meta {
                gap: 10px 16px;
                font-size: 0.82rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .nav-top {
                padding: 0 12px;
                height: 50px;
            }
            .logo {
                font-size: 1rem;
                gap: 6px;
            }
            .logo i {
                font-size: 1.1rem;
            }
            .cta-btn {
                padding: 4px 12px;
                font-size: 0.75rem;
            }
            .nav-bottom-inner {
                padding: 6px 12px;
            }
            .nav-link {
                font-size: 0.75rem;
                padding: 4px 10px;
                gap: 4px;
            }
            .nav-link i {
                font-size: 0.7rem;
            }
            .article-wrapper {
                padding: 20px 0 36px;
            }
            .container-custom {
                padding: 0 14px;
            }
            .article-header h1 {
                font-size: 1.25rem;
            }
            .article-content {
                padding: 18px 14px;
                font-size: 0.92rem;
                border-radius: var(--radius-sm);
            }
            .article-content h2 {
                font-size: 1.15rem;
                padding-left: 12px;
            }
            .article-content h3 {
                font-size: 1.05rem;
            }
            .article-meta {
                font-size: 0.78rem;
                gap: 6px 12px;
            }
            .article-footer-nav {
                flex-direction: column;
                align-items: stretch;
            }
            .article-footer-nav a {
                justify-content: center;
            }
            .footer-grid {
                gap: 20px;
            }
            .footer-col h4 {
                font-size: 0.95rem;
            }
            .footer-col ul li a {
                font-size: 0.82rem;
            }
            .footer-bottom {
                font-size: 0.75rem;
            }
        }

        /* ===== Bootstrap 覆写 & 辅助 ===== */
        .collapse:not(.show) {
            display: none;
        }
        @media (min-width: 769px) {
            .collapse.d-md-block {
                display: block !important;
            }
        }
        .form-control:focus {
            box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.2);
            border-color: var(--primary);
        }
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .text-accent {
            color: var(--accent);
        }
        .text-primary-custom {
            color: var(--primary);
        }
        .bg-card-custom {
            background: var(--bg-card);
        }

/* roulang page: category1 */
:root {
            --primary: #6c3bf1;
            --primary-dark: #5228c9;
            --primary-light: #8f6cf7;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #ec4899;
            --bg-dark: #0f0b1a;
            --bg-darker: #0a0714;
            --bg-card: #1a1430;
            --bg-card-hover: #221c3a;
            --bg-body: #0f0b1a;
            --text-light: #f1f0f7;
            --text-muted: #9a94b8;
            --text-dim: #6b6390;
            --border-color: #2d2548;
            --border-light: #3d3560;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(108, 59, 241, 0.12);
            --shadow-md: 0 6px 24px rgba(108, 59, 241, 0.18);
            --shadow-lg: 0 12px 40px rgba(108, 59, 241, 0.25);
            --shadow-glow: 0 0 30px rgba(108, 59, 241, 0.3);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-light);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--secondary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
        }
        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .container-custom {
            max-width: 1220px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / 双栏导航 ===== */
        .site-header {
            background: var(--bg-darker);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .nav-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 24px;
            max-width: 1220px;
            margin: 0 auto;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            flex-shrink: 0;
            transition: opacity var(--transition);
        }
        .logo:hover {
            opacity: 0.9;
            color: #fff;
        }
        .logo i {
            font-size: 1.8rem;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo span {
            background: linear-gradient(135deg, #fff 60%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-search {
            position: relative;
            flex: 1;
            max-width: 420px;
        }
        .nav-search .search-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-dim);
            font-size: 0.95rem;
            pointer-events: none;
        }
        .nav-search input {
            width: 100%;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 30px;
            padding: 10px 18px 10px 42px;
            color: #fff;
            font-size: 0.92rem;
            transition: all var(--transition);
        }
        .nav-search input::placeholder {
            color: var(--text-dim);
        }
        .nav-search input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(108, 59, 241, 0.18);
            background: var(--bg-card-hover);
        }

        .cta-btn {
            display: flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 10px 22px;
            font-weight: 600;
            font-size: 0.92rem;
            transition: all var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
            color: #fff;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .cta-btn i {
            font-size: 1.1rem;
        }

        .nav-toggle-mobile {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            padding: 4px 8px;
            cursor: pointer;
            flex-shrink: 0;
        }

        .nav-bottom {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-color);
        }
        .nav-bottom-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            max-width: 1220px;
            margin: 0 auto;
            padding: 0 24px;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .nav-bottom-inner::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 12px 20px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            border-bottom: 2px solid transparent;
        }
        .nav-link i {
            font-size: 0.95rem;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(108, 59, 241, 0.10);
        }
        .nav-link.active {
            color: #fff;
            background: rgba(108, 59, 241, 0.15);
            border-bottom-color: var(--primary);
        }

        /* ===== Hero 分类首屏 ===== */
        .cat-hero {
            padding: 60px 0 50px;
            background: linear-gradient(160deg, var(--bg-darker) 0%, var(--bg-card) 60%, var(--bg-dark) 100%);
            position: relative;
            overflow: hidden;
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(108, 59, 241, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cat-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(236, 72, 153, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cat-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .cat-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            background: linear-gradient(135deg, #fff 50%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .cat-hero p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 620px;
            margin-bottom: 24px;
        }
        .cat-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .cat-hero .hero-tags .badge-tag {
            background: rgba(108, 59, 241, 0.18);
            color: var(--primary-light);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(108, 59, 241, 0.25);
            transition: all var(--transition);
            cursor: default;
        }
        .cat-hero .hero-tags .badge-tag:hover {
            background: rgba(108, 59, 241, 0.30);
            border-color: var(--primary);
        }

        /* ===== 筛选栏 ===== */
        .filter-bar {
            padding: 20px 0 10px;
            background: var(--bg-dark);
        }
        .filter-bar .filter-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
        }
        .filter-bar .filter-label {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-right: 4px;
        }
        .filter-bar .filter-btn {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: all var(--transition);
            cursor: pointer;
        }
        .filter-bar .filter-btn:hover {
            border-color: var(--primary);
            color: #fff;
            background: rgba(108, 59, 241, 0.12);
        }
        .filter-bar .filter-btn.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        /* ===== 游戏卡片网格 ===== */
        .game-grid-section {
            padding: 40px 0 60px;
        }
        .game-grid-section .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .game-grid-section .section-header h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .game-grid-section .section-header h2 i {
            color: var(--secondary);
        }
        .game-grid-section .section-header .view-all {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
            transition: color var(--transition);
        }
        .game-grid-section .section-header .view-all:hover {
            color: var(--secondary-light);
        }

        .game-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .game-card:hover {
            transform: translateY(-6px);
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
            background: var(--bg-card-hover);
        }
        .game-card .card-img-top {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: var(--bg-darker);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: var(--text-dim);
            position: relative;
        }
        .game-card .card-img-top .game-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0, 0, 0, 0.70);
            backdrop-filter: blur(6px);
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--secondary-light);
            border: 1px solid rgba(245, 158, 11, 0.3);
        }
        .game-card .card-img-top .game-badge.hot {
            color: #f87171;
            border-color: rgba(248, 113, 113, 0.3);
        }
        .game-card .card-img-top .game-badge.new {
            color: #34d399;
            border-color: rgba(52, 211, 153, 0.3);
        }
        .game-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .game-card .card-body .game-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .game-card .card-body .game-title a {
            color: #fff;
        }
        .game-card .card-body .game-title a:hover {
            color: var(--primary-light);
        }
        .game-card .card-body .game-title .rating {
            font-size: 0.85rem;
            color: var(--secondary);
            font-weight: 600;
        }
        .game-card .card-body .game-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 14px;
            line-height: 1.6;
            flex: 1;
        }
        .game-card .card-body .game-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.82rem;
            color: var(--text-dim);
            margin-bottom: 14px;
            flex-wrap: wrap;
        }
        .game-card .card-body .game-meta span i {
            margin-right: 4px;
        }
        .game-card .card-body .game-actions {
            display: flex;
            gap: 10px;
            margin-top: auto;
        }
        .game-card .card-body .game-actions .btn-sm-dl {
            flex: 1;
            padding: 8px 0;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            text-align: center;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .game-card .card-body .game-actions .btn-primary-dl {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
        }
        .game-card .card-body .game-actions .btn-primary-dl:hover {
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .game-card .card-body .game-actions .btn-outline-dl {
            background: transparent;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
        }
        .game-card .card-body .game-actions .btn-outline-dl:hover {
            border-color: var(--primary-light);
            color: #fff;
            background: rgba(108, 59, 241, 0.10);
        }

        /* ===== 热门排行 ===== */
        .rank-section {
            padding: 50px 0;
            background: var(--bg-darker);
        }
        .rank-section .section-header {
            margin-bottom: 28px;
        }
        .rank-section .section-header h2 {
            font-size: 1.6rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .rank-section .section-header h2 i {
            color: var(--secondary);
        }

        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 14px 20px;
            transition: all var(--transition);
        }
        .rank-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateX(4px);
        }
        .rank-item .rank-num {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-dim);
            min-width: 36px;
            text-align: center;
        }
        .rank-item .rank-num.top1 {
            color: #fbbf24;
        }
        .rank-item .rank-num.top2 {
            color: #94a3b8;
        }
        .rank-item .rank-num.top3 {
            color: #d97706;
        }
        .rank-item .rank-info {
            flex: 1;
        }
        .rank-item .rank-info h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 2px;
            color: #fff;
        }
        .rank-item .rank-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }
        .rank-item .rank-stats {
            font-size: 0.85rem;
            color: var(--text-dim);
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .rank-item .rank-stats i {
            margin-right: 4px;
            color: var(--primary-light);
        }
        .rank-item .rank-btn {
            background: rgba(108, 59, 241, 0.12);
            color: var(--primary-light);
            border: 1px solid rgba(108, 59, 241, 0.2);
            padding: 6px 20px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: all var(--transition);
            cursor: pointer;
            flex-shrink: 0;
        }
        .rank-item .rank-btn:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== 分类标签云 ===== */
        .tag-cloud-section {
            padding: 44px 0 30px;
        }
        .tag-cloud-section .section-header h2 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud .tag-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 0.88rem;
            font-weight: 500;
            transition: all var(--transition);
            cursor: pointer;
        }
        .tag-cloud .tag-item:hover {
            background: rgba(108, 59, 241, 0.12);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== CTA区块 ===== */
        .cta-section {
            padding: 50px 0 60px;
        }
        .cta-section .cta-box {
            background: linear-gradient(145deg, var(--bg-card), var(--bg-darker));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 44px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section .cta-box::before {
            content: '';
            position: absolute;
            top: -60%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(108, 59, 241, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section .cta-box h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-section .cta-box p {
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 24px;
            font-size: 1.05rem;
            position: relative;
        }
        .cta-section .cta-box .cta-btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
        }
        .cta-section .cta-box .cta-btn-group .btn-cta-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
        }
        .cta-section .cta-box .cta-btn-group .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow);
        }
        .cta-section .cta-box .cta-btn-group .btn-cta-secondary {
            background: transparent;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
        }
        .cta-section .cta-box .cta-btn-group .btn-cta-secondary:hover {
            border-color: var(--primary-light);
            color: #fff;
            background: rgba(108, 59, 241, 0.08);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 40px 0 50px;
        }
        .faq-section .section-header h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-section .section-header h2 i {
            color: var(--secondary);
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
            background: var(--bg-card-hover);
        }
        .faq-item .faq-q {
            font-weight: 700;
            font-size: 1.02rem;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 6px;
        }
        .faq-item .faq-q i {
            color: var(--primary-light);
            font-size: 0.9rem;
        }
        .faq-item .faq-a {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            padding-left: 26px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 20px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand .logo-footer {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand .logo-footer i {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }
        .site-footer .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .site-footer .footer-col ul li a i {
            font-size: 0.7rem;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .site-footer .footer-bottom a {
            color: var(--text-muted);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .cat-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-top {
                padding: 10px 16px;
                gap: 10px;
            }
            .nav-toggle-mobile {
                display: block;
            }
            .nav-search {
                display: none;
            }
            .nav-bottom {
                background: var(--bg-darker);
                border-top: none;
            }
            .nav-bottom .nav-bottom-inner {
                flex-direction: column;
                align-items: stretch;
                padding: 8px 16px 16px;
                gap: 2px;
            }
            .nav-bottom .nav-link {
                padding: 10px 16px;
                border-bottom: none;
                border-radius: var(--radius-sm);
            }
            .nav-bottom .nav-link.active {
                border-bottom: none;
                background: rgba(108, 59, 241, 0.18);
            }

            .cat-hero {
                padding: 40px 0 36px;
            }
            .cat-hero h1 {
                font-size: 1.8rem;
            }
            .cat-hero p {
                font-size: 1rem;
            }

            .filter-bar .filter-inner {
                gap: 8px;
            }
            .filter-bar .filter-btn {
                padding: 5px 14px;
                font-size: 0.8rem;
            }

            .game-grid-section .section-header h2 {
                font-size: 1.3rem;
            }

            .rank-item {
                flex-wrap: wrap;
                gap: 10px;
                padding: 12px 16px;
            }
            .rank-item .rank-stats {
                width: 100%;
                justify-content: flex-start;
                gap: 20px;
            }
            .rank-item .rank-btn {
                width: 100%;
                text-align: center;
            }

            .cta-section .cta-box {
                padding: 32px 20px;
            }
            .cta-section .cta-box h3 {
                font-size: 1.4rem;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .cat-hero h1 {
                font-size: 1.5rem;
            }
            .cat-hero .hero-tags .badge-tag {
                font-size: 0.78rem;
                padding: 4px 12px;
            }
            .game-card .card-body {
                padding: 14px 16px 16px;
            }
            .game-card .card-body .game-title {
                font-size: 1rem;
            }
            .game-card .card-body .game-actions {
                flex-direction: column;
                gap: 6px;
            }
            .rank-item .rank-info h4 {
                font-size: 0.95rem;
            }
            .faq-item {
                padding: 16px 18px;
            }
        }

        /* Bootstrap collapse 兼容 */
        .collapse:not(.show) {
            display: none;
        }
        .collapse.show {
            display: block;
        }
        @media (min-width: 769px) {
            .collapse.d-md-block {
                display: block !important;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --bg-primary: #0b1120;
            --bg-secondary: #111b2e;
            --bg-card: #14203a;
            --bg-card-hover: #1a2a4a;
            --bg-nav: #0a0f1a;
            --bg-footer: #070c16;
            --color-primary: #4f8cff;
            --color-secondary: #7c5cfc;
            --color-accent: #ffa502;
            --color-accent-dark: #e69500;
            --color-text: #e8edf5;
            --color-text-secondary: #a0aec0;
            --color-text-muted: #6b7a99;
            --color-border: #1e3055;
            --color-border-light: #2a3f6a;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 14px 40px rgba(79, 140, 255, 0.18);
            --shadow-glow: 0 0 30px rgba(79, 140, 255, 0.12);
            --transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --spacer-section: 80px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--color-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #fff;
        }
        p {
            color: var(--color-text-secondary);
        }
        ::selection {
            background: var(--color-primary);
            color: #fff;
        }

        /* ===== 容器 ===== */
        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== Header / 导航 ===== */
        .site-header {
            background: var(--bg-nav);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }
        .nav-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 24px;
            max-width: 1280px;
            margin: 0 auto;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.5px;
            text-decoration: none;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .logo i {
            color: var(--color-primary);
            font-size: 26px;
        }
        .logo:hover {
            color: var(--color-primary);
        }
        .nav-search {
            flex: 1;
            max-width: 420px;
            position: relative;
        }
        .nav-search .search-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--color-text-muted);
            font-size: 14px;
            pointer-events: none;
        }
        .nav-search .form-control {
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: 40px;
            padding: 9px 18px 9px 40px;
            color: #fff;
            font-size: 14px;
            transition: var(--transition);
            width: 100%;
        }
        .nav-search .form-control:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(79, 140, 255, 0.15);
            outline: none;
            background: var(--bg-card-hover);
        }
        .nav-search .form-control::placeholder {
            color: var(--color-text-muted);
        }
        .cta-btn {
            display: flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            padding: 9px 22px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            border: none;
            flex-shrink: 0;
            text-decoration: none;
        }
        .cta-btn i {
            font-size: 16px;
        }
        .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(79, 140, 255, 0.35);
            color: #fff;
        }
        .nav-toggle-mobile {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 24px;
            padding: 4px 8px;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle-mobile:hover {
            color: var(--color-primary);
        }
        .nav-bottom {
            border-top: 1px solid rgba(30, 48, 85, 0.5);
            padding: 0 24px;
        }
        .nav-bottom-inner {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            gap: 4px;
            padding: 6px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-bottom-inner::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 40px;
            color: var(--color-text-secondary);
            font-weight: 500;
            font-size: 14px;
            white-space: nowrap;
            transition: var(--transition);
            text-decoration: none;
        }
        .nav-link i {
            font-size: 15px;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(79, 140, 255, 0.08);
        }
        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            box-shadow: 0 4px 16px rgba(79, 140, 255, 0.25);
        }
        .nav-link.active:hover {
            box-shadow: 0 6px 24px rgba(79, 140, 255, 0.35);
            transform: translateY(-1px);
        }
        @media (max-width: 768px) {
            .nav-top {
                padding: 10px 16px;
            }
            .logo {
                font-size: 18px;
            }
            .logo i {
                font-size: 20px;
            }
            .nav-toggle-mobile {
                display: block;
            }
            .nav-search {
                display: none !important;
            }
            .cta-btn span {
                display: none;
            }
            .cta-btn {
                padding: 9px 14px;
                font-size: 16px;
            }
            .cta-btn i {
                margin: 0;
            }
            .nav-bottom {
                padding: 0 16px;
                background: var(--bg-nav);
                border-top: 1px solid var(--color-border);
            }
            .nav-bottom-inner {
                padding: 8px 0 12px;
                gap: 6px;
                flex-wrap: nowrap;
            }
            .nav-link {
                font-size: 13px;
                padding: 6px 14px;
            }
            .collapse:not(.show) {
                display: none;
            }
            .collapse.show {
                display: block;
            }
        }
        @media (min-width: 769px) {
            #navBottom {
                display: block !important;
            }
        }

        /* ===== Hero 分类首屏 ===== */
        .category-hero {
            background: linear-gradient(145deg, #0d1628 0%, #141f3a 50%, #0b1120 100%);
            padding: 70px 0 56px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--color-border);
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(79, 140, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(124, 92, 252, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .container-custom {
            position: relative;
            z-index: 1;
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            margin-bottom: 12px;
            background: linear-gradient(135deg, #fff 30%, var(--color-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero p {
            font-size: 18px;
            max-width: 640px;
            color: var(--color-text-secondary);
            margin-bottom: 20px;
        }
        .category-hero .hero-stats {
            display: flex;
            gap: 36px;
            flex-wrap: wrap;
            margin-top: 16px;
        }
        .category-hero .hero-stat-item {
            display: flex;
            flex-direction: column;
        }
        .category-hero .hero-stat-item .num {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.2;
        }
        .category-hero .hero-stat-item .label {
            font-size: 13px;
            color: var(--color-text-muted);
            letter-spacing: 0.3px;
        }
        @media (max-width: 768px) {
            .category-hero {
                padding: 48px 0 36px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero p {
                font-size: 15px;
            }
            .category-hero .hero-stats {
                gap: 24px;
            }
            .category-hero .hero-stat-item .num {
                font-size: 22px;
            }
        }

        /* ===== 通用板块标题 ===== */
        .section-title {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-bottom: 36px;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 24px;
            }
            .section-subtitle {
                font-size: 14px;
                margin-bottom: 24px;
            }
        }

        /* ===== 攻略分类标签 ===== */
        .guide-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
        }
        .guide-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 40px;
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .guide-tag i {
            font-size: 13px;
            color: var(--color-primary);
        }
        .guide-tag:hover {
            background: var(--bg-card-hover);
            border-color: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .guide-tag.active {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            border-color: transparent;
            color: #fff;
            box-shadow: 0 4px 16px rgba(79, 140, 255, 0.2);
        }
        @media (max-width: 768px) {
            .guide-tags {
                gap: 8px;
            }
            .guide-tag {
                padding: 6px 14px;
                font-size: 13px;
            }
        }

        /* ===== 攻略卡片 ===== */
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-border-light);
            background: var(--bg-card-hover);
        }
        .guide-card .card-thumb {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-secondary);
        }
        .guide-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .guide-card:hover .card-thumb img {
            transform: scale(1.06);
        }
        .guide-card .card-thumb .thumb-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(6px);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            border: 1px solid rgba(255, 165, 2, 0.2);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .guide-card .card-thumb .thumb-badge i {
            font-size: 11px;
        }
        .guide-card .card-thumb .thumb-duration {
            position: absolute;
            bottom: 10px;
            right: 12px;
            background: rgba(0, 0, 0, 0.75);
            backdrop-filter: blur(4px);
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            color: #fff;
        }
        .guide-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-body .game-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 12px;
            background: rgba(79, 140, 255, 0.12);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 8px;
            align-self: flex-start;
        }
        .guide-card .card-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
            line-height: 1.4;
            transition: var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .guide-card:hover .card-body h3 {
            color: var(--color-primary);
        }
        .guide-card .card-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 14px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--color-text-muted);
            border-top: 1px solid rgba(30, 48, 85, 0.4);
            padding-top: 12px;
            margin-top: auto;
        }
        .guide-card .card-meta .meta-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .guide-card .card-meta .meta-left span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .guide-card .card-meta .meta-left i {
            font-size: 12px;
        }
        .guide-card .card-meta .read-more {
            color: var(--color-primary);
            font-weight: 500;
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }
        .guide-card .card-meta .read-more:hover {
            color: var(--color-accent);
            gap: 8px;
        }
        @media (max-width: 768px) {
            .guide-card .card-body {
                padding: 14px 16px 16px;
            }
            .guide-card .card-body h3 {
                font-size: 15px;
            }
            .guide-card .card-body p {
                font-size: 13px;
            }
        }

        /* ===== 精选攻略 - 大卡片 ===== */
        .featured-guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: row;
            min-height: 280px;
        }
        .featured-guide-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-border-light);
        }
        .featured-guide-card .featured-thumb {
            flex: 0 0 45%;
            overflow: hidden;
            position: relative;
            min-height: 240px;
        }
        .featured-guide-card .featured-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .featured-guide-card:hover .featured-thumb img {
            transform: scale(1.04);
        }
        .featured-guide-card .featured-thumb .featured-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: linear-gradient(135deg, var(--color-accent), #ff7b00);
            color: #fff;
            padding: 6px 16px;
            border-radius: 24px;
            font-size: 13px;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(255, 165, 2, 0.3);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .featured-guide-card .featured-body {
            flex: 1;
            padding: 28px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-guide-card .featured-body .game-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 12px;
            background: rgba(124, 92, 252, 0.15);
            color: var(--color-secondary);
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .featured-guide-card .featured-body h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
            transition: var(--transition);
        }
        .featured-guide-card:hover .featured-body h3 {
            color: var(--color-primary);
        }
        .featured-guide-card .featured-body p {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .featured-guide-card .featured-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .featured-guide-card .featured-meta i {
            margin-right: 4px;
        }
        .featured-guide-card .featured-meta .btn-outline {
            margin-left: auto;
            padding: 6px 20px;
            border-radius: 40px;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
            background: transparent;
            font-weight: 500;
            font-size: 13px;
            transition: var(--transition);
            text-decoration: none;
        }
        .featured-guide-card .featured-meta .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(79, 140, 255, 0.2);
        }
        @media (max-width: 768px) {
            .featured-guide-card {
                flex-direction: column;
                min-height: auto;
            }
            .featured-guide-card .featured-thumb {
                flex: 0 0 200px;
                min-height: 200px;
            }
            .featured-guide-card .featured-body {
                padding: 20px 20px 24px;
            }
            .featured-guide-card .featured-body h3 {
                font-size: 18px;
            }
            .featured-guide-card .featured-body p {
                font-size: 14px;
                -webkit-line-clamp: 2;
            }
            .featured-guide-card .featured-meta {
                flex-wrap: wrap;
                gap: 12px;
            }
            .featured-guide-card .featured-meta .btn-outline {
                margin-left: 0;
                width: 100%;
                text-align: center;
            }
        }

        /* ===== 排行榜 ===== */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 14px 20px;
            border: 1px solid var(--color-border);
            transition: var(--transition);
            cursor: default;
        }
        .rank-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--color-border-light);
            transform: translateX(4px);
        }
        .rank-item .rank-num {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            background: rgba(79, 140, 255, 0.1);
            color: var(--color-text-secondary);
        }
        .rank-item:nth-child(1) .rank-num {
            background: linear-gradient(135deg, #ffa502, #ff7b00);
            color: #fff;
            box-shadow: 0 3px 12px rgba(255, 165, 2, 0.3);
        }
        .rank-item:nth-child(2) .rank-num {
            background: linear-gradient(135deg, #60a5fa, #4f8cff);
            color: #fff;
            box-shadow: 0 3px 12px rgba(79, 140, 255, 0.25);
        }
        .rank-item:nth-child(3) .rank-num {
            background: linear-gradient(135deg, #a78bfa, #7c5cfc);
            color: #fff;
            box-shadow: 0 3px 12px rgba(124, 92, 252, 0.25);
        }
        .rank-item .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-item .rank-info .rank-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .rank-item .rank-info .rank-game {
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .rank-item .rank-stats {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .rank-item .rank-stats i {
            margin-right: 4px;
            color: var(--color-primary);
        }
        .rank-item .rank-stats .hot-badge {
            background: rgba(255, 165, 2, 0.12);
            color: var(--color-accent);
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .rank-item {
                padding: 12px 14px;
                gap: 12px;
            }
            .rank-item .rank-info .rank-title {
                font-size: 14px;
            }
            .rank-item .rank-stats {
                font-size: 12px;
                gap: 8px;
                flex-direction: column;
                align-items: flex-end;
            }
            .rank-item .rank-stats .hot-badge {
                font-size: 11px;
                padding: 1px 8px;
            }
        }

        /* ===== 专题卡片 ===== */
        .topic-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .topic-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-border-light);
        }
        .topic-card .topic-thumb {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
            background: var(--bg-secondary);
        }
        .topic-card .topic-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .topic-card:hover .topic-thumb img {
            transform: scale(1.06);
        }
        .topic-card .topic-thumb .topic-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
            padding: 30px 18px 16px;
        }
        .topic-card .topic-thumb .topic-overlay .topic-count {
            font-size: 13px;
            color: var(--color-accent);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .topic-card .topic-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .topic-card .topic-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
            transition: var(--transition);
        }
        .topic-card:hover .topic-body h3 {
            color: var(--color-primary);
        }
        .topic-card .topic-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 14px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .topic-card .topic-body .topic-link {
            color: var(--color-primary);
            font-weight: 500;
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
            text-decoration: none;
            align-self: flex-start;
        }
        .topic-card .topic-body .topic-link:hover {
            color: var(--color-accent);
            gap: 8px;
        }
        @media (max-width: 768px) {
            .topic-card .topic-body {
                padding: 14px 16px 16px;
            }
            .topic-card .topic-body h3 {
                font-size: 15px;
            }
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 10px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-accordion .accordion-item:hover {
            border-color: var(--color-border-light);
        }
        .faq-accordion .accordion-button {
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 16px 20px;
            box-shadow: none;
            border-radius: 0;
            transition: var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(79, 140, 255, 0.06);
            color: var(--color-primary);
        }
        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23a0aec0'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
            transition: var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%234f8cff'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
        }
        .faq-accordion .accordion-body {
            padding: 0 20px 18px;
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.7;
        }
        .faq-accordion .accordion-body a {
            color: var(--color-primary);
            text-decoration: underline;
        }
        .faq-accordion .accordion-body a:hover {
            color: var(--color-accent);
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            background: linear-gradient(145deg, #0d1628, #141f3a);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            border: 1px solid var(--color-border);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            left: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(79, 140, 255, 0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-section p {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 520px;
            margin: 0 auto 28px;
            position: relative;
        }
        .cta-section .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }
        .cta-section .btn-primary-custom {
            padding: 12px 34px;
            border-radius: 40px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border: none;
            transition: var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-section .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(79, 140, 255, 0.35);
            color: #fff;
        }
        .cta-section .btn-outline-custom {
            padding: 12px 34px;
            border-radius: 40px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-section .btn-outline-custom:hover {
            border-color: var(--color-primary);
            background: rgba(79, 140, 255, 0.06);
            color: var(--color-primary);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 36px 20px;
                border-radius: var(--radius-md);
            }
            .cta-section h2 {
                font-size: 22px;
            }
            .cta-section p {
                font-size: 14px;
            }
            .cta-section .btn-primary-custom,
            .cta-section .btn-outline-custom {
                padding: 10px 24px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-footer);
            border-top: 1px solid var(--color-border);
            padding: 56px 0 0;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
        }
        .logo-footer {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .logo-footer i {
            color: var(--color-primary);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            color: var(--color-text-muted);
            font-size: 14px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a i {
            font-size: 10px;
            color: var(--color-primary);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--color-primary);
            transform: translateX(4px);
        }
        .footer-col ul li a:hover i {
            transform: translateX(2px);
        }
        .footer-bottom {
            margin-top: 40px;
            padding: 20px 0;
            border-top: 1px solid rgba(30, 48, 85, 0.4);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: var(--color-text-muted);
        }
        .footer-bottom a:hover {
            color: var(--color-primary);
        }
        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer {
                padding: 36px 0 0;
            }
        }

        /* ===== 通用 Spacing ===== */
        .section-padding {
            padding: var(--spacer-section) 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
        }

        /* ===== 背景交替 ===== */
        .bg-section-alt {
            background: var(--bg-secondary);
        }

        /* ===== 分隔装饰 ===== */
        .section-divider {
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--color-border), transparent);
            margin: 0;
            border: none;
        }

        /* ===== 动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .anim-fade-up {
            animation: fadeInUp 0.6s ease forwards;
        }
        .anim-delay-1 {
            animation-delay: 0.1s;
        }
        .anim-delay-2 {
            animation-delay: 0.2s;
        }
        .anim-delay-3 {
            animation-delay: 0.3s;
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-primary);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--color-border-light);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--color-text-muted);
        }

        /* ===== Bootstrap 重置 ===== */
        .row {
            --bs-gutter-x: 24px;
        }
        @media (max-width: 768px) {
            .row {
                --bs-gutter-x: 16px;
            }
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--color-border-light);
        }
        .accordion-button:not(.collapsed)::after {
            filter: none;
        }