/* roulang page: index */
:root {
            --primary: #ff6b35;
            --primary-dark: #e8592a;
            --primary-light: #fff3ed;
            --accent: #1e5eff;
            --accent-dark: #1640cc;
            --accent-light: #edf2ff;
            --bg-dark: #0b1626;
            --bg-light: #f7f9fc;
            --bg-white: #ffffff;
            --text-main: #1e293b;
            --text-body: #475569;
            --text-weak: #94a3b8;
            --border: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.10);
            --space-1: 8px;
            --space-2: 16px;
            --space-3: 24px;
            --space-4: 48px;
            --space-5: 80px;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

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

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

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

        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-main);
            margin: 12px 0 8px;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-weak);
            max-width: 560px;
            margin: 0 auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(255, 107, 53, 0.4);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(255, 107, 53, 0.4);
        }

        .btn-secondary {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.5);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }

        /* ===== 头部导航 ===== */
        .site-header {
            background: var(--bg-white);
            box-shadow: 0 1px 6px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-main {
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 24px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #ff9a5c);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
        }

        .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.5px;
        }

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

        .header-search {
            flex: 1;
            max-width: 480px;
        }

        .header-search form {
            display: flex;
            background: var(--bg-light);
            border-radius: 50px;
            border: 2px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }

        .header-search form:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.12);
        }

        .header-search input {
            flex: 1;
            padding: 10px 18px;
            font-size: 14px;
            background: transparent;
            color: var(--text-main);
            min-width: 0;
        }

        .header-search input::placeholder {
            color: var(--text-weak);
        }

        .header-search button {
            padding: 0 18px;
            color: var(--text-weak);
            font-size: 15px;
            transition: var(--transition);
        }

        .header-search button:hover {
            color: var(--primary);
        }

        .header-actions {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-actions .btn {
            padding: 10px 22px;
            font-size: 14px;
        }

        .header-nav {
            background: var(--bg-white);
        }

        .header-nav .container {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .channel-nav {
            display: flex;
            gap: 4px;
            align-items: center;
            flex: 1;
        }

        .channel-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 12px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-body);
            border-radius: 50px;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .channel-item i {
            font-size: 14px;
            color: var(--text-weak);
            transition: var(--transition);
        }

        .channel-item:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .channel-item:hover i {
            color: var(--primary);
        }

        .channel-item.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 700;
        }

        .channel-item.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
        }

        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            background: var(--bg-light);
        }

        .mobile-toggle span {
            width: 20px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 100px 0 110px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 22, 38, 0.9) 0%, rgba(11, 22, 38, 0.55) 60%, rgba(255, 107, 53, 0.25) 100%);
        }

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

        .hero-content {
            max-width: 720px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(8px);
        }

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

        .hero h1 {
            font-size: 52px;
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
            margin: 20px 0 16px;
            letter-spacing: -1px;
            background: linear-gradient(135deg, #ffffff 0%, #f0f4ff 60%, #ffd6c2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 560px;
        }

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

        .btn-hero-primary {
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            padding: 14px 32px;
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.4);
        }

        .btn-hero-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255, 107, 53, 0.5);
        }

        .btn-hero-secondary {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.35);
            font-size: 16px;
            padding: 14px 32px;
            backdrop-filter: blur(4px);
        }

        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: #fff;
        }

        .hero-meta {
            display: flex;
            gap: 24px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }

        .hero-meta i {
            color: var(--primary);
            font-size: 16px;
        }

        .hero-scroll {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            color: rgba(255, 255, 255, 0.5);
            font-size: 20px;
            animation: bounce 2s infinite;
            z-index: 2;
        }

        @keyframes bounce {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(8px);
            }
        }

        /* ===== 特色板块 ===== */
        .features-section {
            padding: 80px 0;
            background: var(--bg-white);
        }

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

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

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            transform: scaleX(0);
            transition: transform 0.4s ease;
        }

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

        .feature-card:hover::before {
            transform: scaleX(1);
        }

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

        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.06);
        }

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

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

        /* ===== 分类入口 ===== */
        .category-section {
            padding: 80px 0;
            background: var(--bg-light);
        }

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

        .category-card {
            display: block;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-white);
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

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

        .category-card-img {
            position: relative;
            height: 240px;
            overflow: hidden;
        }

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

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

        .category-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.3), transparent);
        }

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

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .category-card-body h3 {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .category-card-body p {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 16px;
            line-height: 1.6;
        }

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

        .category-link i {
            transition: transform 0.3s ease;
        }

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

        /* ===== 新闻资讯 ===== */
        .news-section {
            padding: 80px 0;
            background: var(--bg-white);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
        }

        .news-featured {
            display: block;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .news-featured-img {
            height: 280px;
            overflow: hidden;
        }

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

        .news-featured:hover .news-featured-img img {
            transform: scale(1.04);
        }

        .news-featured-body {
            padding: 24px;
        }

        .news-cat {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
        }

        .news-featured-body h3 {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .news-featured-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: inline-flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-weak);
        }

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

        .news-list-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            background: var(--bg-light);
            border-radius: var(--radius-md);
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .news-list-item:hover {
            background: var(--bg-white);
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }

        .news-list-info {
            flex: 1;
            min-width: 0;
        }

        .news-list-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-top: 4px;
        }

        .news-date {
            font-size: 13px;
            color: var(--text-weak);
            flex-shrink: 0;
            margin-left: 12px;
        }

        .news-empty {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            padding: 40px;
            text-align: center;
            color: var(--text-weak);
            font-size: 15px;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            padding: 70px 0;
            background: var(--bg-dark);
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 22, 38, 0.8);
        }

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

        .stat-item {
            text-align: center;
            padding: 24px;
        }

        .stat-number {
            font-size: 48px;
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
            background: linear-gradient(135deg, #fff, #ffd6c2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 8px;
            font-weight: 500;
        }

        /* ===== 使用流程 ===== */
        .steps-section {
            padding: 80px 0;
            background: var(--bg-light);
        }

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

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

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

        .step-number {
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 42px;
            font-weight: 900;
            color: var(--border);
            line-height: 1;
        }

        .step-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: linear-gradient(135deg, var(--primary), #ff9a5c);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: #fff;
            margin: 0 auto 16px;
            box-shadow: 0 6px 16px rgba(255, 107, 53, 0.3);
        }

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

        .step-item p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg-white);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

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

        .faq-item:hover {
            border-color: #ccc;
        }

        .faq-item.active {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.08);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            transition: var(--transition);
        }

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

        .faq-question i {
            color: var(--text-weak);
            transition: transform 0.3s ease;
            flex-shrink: 0;
            margin-left: 12px;
        }

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

        .faq-answer {
            display: none;
            padding: 0 24px 18px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            border-top: 1px dashed var(--border);
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-light);
        }

        .cta-box {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #0f2440 50%, #1a3358 100%);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 107, 53, 0.15);
            filter: blur(40px);
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(30, 94, 255, 0.1);
            filter: blur(50px);
        }

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

        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 32px;
        }

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

        .btn-cta-primary {
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            padding: 14px 36px;
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.4);
        }

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

        .btn-cta-secondary {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
            font-size: 16px;
            padding: 14px 36px;
        }

        .btn-cta-secondary:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 30px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            font-size: 16px;
            border-radius: 10px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }

        .footer-links h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

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

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition);
        }

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

        .footer-bottom {
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom p {
            margin-bottom: 0;
        }

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

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

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

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

            .news-featured-img {
                height: 240px;
            }

            .hero h1 {
                font-size: 40px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 12px;
            }

            .header-search {
                order: 3;
                max-width: 100%;
                flex-basis: 100%;
            }

            .header-actions .btn {
                padding: 8px 16px;
                font-size: 13px;
            }

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

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 17px;
            }

            .mobile-toggle {
                display: flex;
            }

            .channel-nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-white);
                box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
                flex-direction: column;
                padding: 12px;
                gap: 4px;
                display: none;
                border-top: 1px solid var(--border);
            }

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

            .channel-item {
                width: 100%;
                padding: 14px 16px;
                border-radius: var(--radius-sm);
            }

            .channel-item.active::after {
                display: none;
            }

            .hero {
                padding: 70px 0;
            }

            .hero h1 {
                font-size: 32px;
            }

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

            .hero-actions .btn {
                padding: 12px 24px;
                font-size: 14px;
            }

            .section-header h2 {
                font-size: 26px;
            }

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

            .category-card-img {
                height: 200px;
            }

            .cta-box {
                padding: 40px 24px;
            }

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

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

            .footer-links {
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                padding-top: 20px;
            }
        }

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

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

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

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

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

            .hero-meta {
                gap: 12px;
            }

            .hero-meta span {
                font-size: 12px;
            }

            .btn-hero-primary,
            .btn-hero-secondary {
                padding: 12px 22px;
                font-size: 14px;
            }

            .news-featured-img {
                height: 180px;
            }

            .news-list-item {
                padding: 14px;
            }

            .news-date {
                font-size: 12px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: center;
            }

            .cta-actions .btn {
                width: 100%;
                max-width: 280px;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --bg-body: #070c14;
            --bg-deep: #05080e;
            --bg-card: #0f1626;
            --bg-elev: #162033;
            --bg-soft: rgba(255, 255, 255, 0.045);
            --accent: #00c2ff;
            --accent-rgb: 0, 194, 255;
            --accent-glow: #29e2ff;
            --gold: #f0b955;
            --gold-rgb: 240, 185, 85;
            --text-main: #e6edf6;
            --text-muted: #8fa0b8;
            --border: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.14);
            --radius-lg: 22px;
            --radius-md: 14px;
            --radius-sm: 9px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.38);
            --shadow-hover: 0 14px 42px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 194, 255, 0.12);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --header-h: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--accent-glow);
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        button,
        input {
            font-family: inherit;
            font-size: 100%;
        }
        ul {
            list-style: none;
        }
        ::selection {
            background: rgba(0, 194, 255, 0.3);
            color: #fff;
        }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: 1220px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 头部 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(8, 13, 22, 0.84);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
        }
        .header-top {
            padding: 14px 0;
        }
        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(0, 194, 255, 0.25), rgba(240, 185, 85, 0.28));
            border: 1px solid rgba(0, 194, 255, 0.35);
            box-shadow: 0 0 18px rgba(0, 194, 255, 0.15);
            font-size: 18px;
            color: var(--accent-glow);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 1px;
            background: linear-gradient(90deg, #fff, #d5e9ff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 4px 6px 4px 16px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 194, 255, 0.15);
        }
        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            width: 170px;
            font-size: 13px;
            padding: 5px 0;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box button {
            background: linear-gradient(135deg, var(--accent), #0084ff);
            border: none;
            color: #fff;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            transform: scale(1.08);
            box-shadow: 0 0 12px rgba(0, 194, 255, 0.45);
        }
        .btn-header-support {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 24px;
            background: rgba(240, 185, 85, 0.12);
            border: 1px solid rgba(240, 185, 85, 0.35);
            color: var(--gold);
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-header-support:hover {
            background: rgba(240, 185, 85, 0.22);
            color: #ffd390;
            box-shadow: 0 0 16px rgba(240, 185, 85, 0.2);
        }
        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-strong);
            color: var(--text-main);
            width: 38px;
            height: 38px;
            border-radius: 10px;
            cursor: pointer;
            font-size: 16px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.14);
        }

        /* ===== 频道导航 ===== */
        .channel-nav-wrap {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            background: rgba(5, 8, 14, 0.55);
            overflow-x: auto;
            overflow-y: hidden;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .channel-nav-wrap::-webkit-scrollbar {
            display: none;
        }
        .channel-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 24px;
            white-space: nowrap;
            max-width: 1220px;
            margin: 0 auto;
        }
        .channel-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            background: transparent;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .channel-item i {
            font-size: 13px;
            opacity: 0.85;
        }
        .channel-item:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.04);
        }
        .channel-item.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(0, 194, 255, 0.25), rgba(0, 132, 255, 0.2));
            border-color: rgba(0, 194, 255, 0.45);
            box-shadow: 0 4px 16px rgba(0, 194, 255, 0.18);
        }
        .channel-item.active i {
            color: var(--accent-glow);
        }

        /* ===== 分类 Hero ===== */
        .cat-hero {
            position: relative;
            padding: 90px 0 80px;
            background-size: cover;
            background-position: center;
            background-color: var(--bg-deep);
            isolation: isolate;
        }
        .cat-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(5, 8, 14, 0.96), rgba(5, 8, 14, 0.72));
            z-index: -1;
        }
        .cat-hero::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(180deg, transparent, var(--bg-body));
            z-index: -1;
        }
        .breadcrumb {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 22px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--accent-glow);
        }
        .breadcrumb span {
            color: var(--text-muted);
            opacity: 0.5;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-glow);
            background: rgba(0, 194, 255, 0.1);
            border: 1px solid rgba(0, 194, 255, 0.3);
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .cat-hero h1 {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            max-width: 720px;
            letter-spacing: 1px;
        }
        .cat-hero .lead {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 620px;
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 44px;
        }
        .btn-primary,
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 700;
            padding: 13px 26px;
            border-radius: 30px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, #00c2ff, #0077ff);
            color: #fff;
            box-shadow: 0 6px 20px rgba(0, 194, 255, 0.3);
        }
        .btn-primary:hover {
            color: #fff;
            box-shadow: 0 10px 30px rgba(0, 194, 255, 0.45);
            transform: translateY(-2px);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-main);
            border: 1px solid var(--border-strong);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-meta {
            display: flex;
            gap: 36px;
            flex-wrap: wrap;
        }
        .hero-meta .meta-item {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .meta-item span {
            font-size: 26px;
            font-weight: 800;
            color: var(--accent-glow);
            font-variant-numeric: tabular-nums;
        }

        /* ===== 通用 Section ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-deep);
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 50px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent);
            background: rgba(0, 194, 255, 0.08);
            border: 1px solid rgba(0, 194, 255, 0.2);
            padding: 5px 16px;
            border-radius: 30px;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
            color: #fff;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ===== 登录方式卡片 ===== */
        .methods-grid .method-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .methods-grid .method-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 194, 255, 0.25);
        }
        .method-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--bg-elev);
        }
        .method-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .methods-grid .method-card:hover .method-thumb img {
            transform: scale(1.05);
        }
        .method-thumb::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(7, 10, 16, 0.85));
        }
        .thumb-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }
        .method-play {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: rgba(0, 194, 255, 0.85);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            z-index: 2;
            opacity: 0;
            transition: var(--transition);
            box-shadow: 0 0 20px rgba(0, 194, 255, 0.5);
        }
        .methods-grid .method-card:hover .method-play {
            opacity: 1;
        }
        .method-content {
            padding: 24px 22px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .method-content h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
        }
        .method-content p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 18px;
        }
        .method-list {
            margin-top: auto;
        }
        .method-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-main);
            padding: 4px 0;
        }
        .method-list li i {
            color: var(--accent);
            font-size: 14px;
        }

        /* ===== 四步流程 ===== */
        .section-steps {
            background: var(--bg-deep);
            position: relative;
        }
        .steps-grid .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            height: 100%;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }
        .steps-grid .step-card:hover {
            transform: translateY(-5px);
            border-color: rgba(0, 194, 255, 0.3);
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            position: absolute;
            top: 10px;
            right: 14px;
            font-size: 56px;
            font-weight: 900;
            line-height: 1;
            color: rgba(255, 255, 255, 0.05);
            letter-spacing: -2px;
            transition: var(--transition);
        }
        .steps-grid .step-card:hover .step-num {
            color: rgba(0, 194, 255, 0.15);
        }
        .step-icon {
            width: 54px;
            height: 54px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            font-size: 22px;
            background: rgba(0, 194, 255, 0.1);
            color: var(--accent);
            margin-bottom: 20px;
            border: 1px solid rgba(0, 194, 255, 0.2);
            position: relative;
            z-index: 2;
        }
        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
            position: relative;
            z-index: 2;
        }
        .step-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.75;
            position: relative;
            z-index: 2;
        }

        /* ===== 登录准备 ===== */
        .section-prepare {
            position: relative;
            background-size: cover;
            background-position: center;
            background-color: var(--bg-deep);
            isolation: isolate;
        }
        .section-prepare::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(5, 8, 14, 0.95), rgba(5, 8, 14, 0.75));
            z-index: 0;
        }
        .section-prepare .container {
            position: relative;
            z-index: 1;
        }
        .prep-grid {
            display: flex;
            align-items: center;
            gap: 50px;
        }
        .prep-content {
            flex: 1.1;
        }
        .prep-content .section-tag {
            margin-bottom: 12px;
        }
        .prep-content h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
            color: #fff;
            line-height: 1.3;
        }
        .prep-content>p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 26px;
            max-width: 460px;
        }
        .prep-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            max-width: 520px;
        }
        .prep-item {
            display: flex;
            align-items: center;
            gap: 12px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            transition: var(--transition);
        }
        .prep-item:hover {
            background: rgba(0, 194, 255, 0.07);
            border-color: rgba(0, 194, 255, 0.25);
        }
        .prep-item .icon-circle {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 194, 255, 0.12);
            color: var(--accent);
            font-size: 15px;
            flex-shrink: 0;
        }
        .prep-visual {
            flex: 0.9;
        }
        .prep-visual img {
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-strong);
            box-shadow: var(--shadow-card);
            width: 100%;
            object-fit: cover;
        }

        /* ===== 安全提示 ===== */
        .section-security {
            padding: 54px 0;
        }
        .security-box {
            background: linear-gradient(135deg, rgba(0, 194, 255, 0.06), rgba(240, 185, 85, 0.04));
            border: 1px solid rgba(0, 194, 255, 0.18);
            border-radius: var(--radius-lg);
            padding: 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .security-box::after {
            content: "";
            position: absolute;
            right: -50px;
            bottom: -50px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(0, 194, 255, 0.05);
            filter: blur(30px);
        }
        .security-icon {
            width: 66px;
            height: 66px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(0, 194, 255, 0.2), rgba(240, 185, 85, 0.15));
            border: 1px solid rgba(0, 194, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--accent-glow);
            margin: 0 auto 18px;
        }
        .security-box h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .security-box p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 560px;
            margin: 0 auto 22px;
        }
        .security-badges {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            padding: 7px 16px;
            border-radius: 24px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-strong);
            color: var(--text-main);
            transition: var(--transition);
        }
        .badge i {
            color: var(--accent);
        }
        .badge:hover {
            border-color: rgba(0, 194, 255, 0.4);
            background: rgba(0, 194, 255, 0.08);
        }

        /* ===== FAQ ===== */
        .section-faq {
            background: var(--bg-deep);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item.active {
            border-color: rgba(0, 194, 255, 0.3);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
            background: none;
            border: none;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--accent-glow);
        }
        .faq-question .faq-toggle {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border-strong);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--accent);
            transition: transform 0.35s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-question .faq-toggle {
            transform: rotate(45deg);
            background: rgba(0, 194, 255, 0.15);
            border-color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 24px;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 320px;
            padding: 0 24px 22px;
        }
        .faq-answer p {
            color: var(--text-muted);
            font-size: 14.5px;
            line-height: 1.8;
            border-left: 2px solid rgba(0, 194, 255, 0.3);
            padding-left: 14px;
        }

        /* ===== CTA ===== */
        .section-cta {
            padding: 64px 0 88px;
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(0, 194, 255, 0.12), rgba(240, 185, 85, 0.08));
            border: 1px solid rgba(0, 194, 255, 0.25);
            border-radius: 26px;
            padding: 54px 44px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: "";
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 300px;
            height: 160px;
            background: radial-gradient(ellipse, rgba(0, 194, 255, 0.18), transparent 70%);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
            color: #fff;
        }
        .cta-box p {
            color: var(--text-muted);
            font-size: 16px;
            margin-bottom: 24px;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--gold), #ff9f43);
            color: #0f1420;
            font-weight: 700;
            font-size: 15px;
            padding: 15px 32px;
            border-radius: 34px;
            box-shadow: 0 8px 24px rgba(240, 185, 85, 0.35);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-cta:hover {
            color: #0f1420;
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(240, 185, 85, 0.5);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
            margin-top: 20px;
        }
        .footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border);
        }
        .footer-brand {
            flex: 1 1 280px;
            max-width: 420px;
        }
        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-logo:hover {
            color: var(--accent-glow);
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
        }
        .footer-links {
            flex: 0 0 auto;
            min-width: 140px;
        }
        .footer-links h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-links ul li {
            margin-bottom: 10px;
        }
        .footer-links ul li a {
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-links ul li a:hover {
            color: var(--accent-glow);
        }
        .footer-bottom {
            padding: 22px 0;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 13px;
            text-align: center;
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1024px) {
            .cat-hero h1 {
                font-size: 38px;
            }
            .section {
                padding: 64px 0;
            }
            .prep-grid {
                gap: 30px;
            }
            .prep-list {
                grid-template-columns: 1fr;
            }
            .search-box input {
                width: 120px;
            }
        }

        @media (max-width: 768px) {
            .header-top {
                padding: 10px 0;
            }
            .search-box {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .channel-nav {
                padding: 8px 16px;
                gap: 4px;
            }
            .channel-item {
                font-size: 13px;
                padding: 7px 14px;
            }
            .cat-hero {
                padding: 64px 0 60px;
            }
            .cat-hero h1 {
                font-size: 30px;
            }
            .cat-hero .lead {
                font-size: 15px;
            }
            .hero-meta {
                gap: 20px;
            }
            .section-head h2 {
                font-size: 28px;
            }
            .prep-grid {
                flex-direction: column-reverse;
            }
            .prep-visual {
                width: 100%;
            }
            .prep-list {
                grid-template-columns: 1fr 1fr;
            }
            .security-box {
                padding: 30px 20px;
            }
            .cta-box {
                padding: 44px 24px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .footer-top {
                gap: 30px;
            }
            .footer-brand {
                flex: 1 1 100%;
                max-width: none;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }
            .logo-text {
                font-size: 17px;
            }
            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .btn-header-support {
                font-size: 12px;
                padding: 7px 12px;
            }
            .channel-item {
                font-size: 12px;
                padding: 6px 12px;
            }
            .cat-hero h1 {
                font-size: 25px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-ghost {
                justify-content: center;
                width: 100%;
            }
            .hero-meta {
                flex-direction: column;
                gap: 14px;
            }
            .section {
                padding: 52px 0;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .prep-list {
                grid-template-columns: 1fr;
            }
            .security-badges {
                flex-direction: column;
                align-items: center;
            }
            .badge {
                width: 100%;
                justify-content: center;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 18px;
            }
            .cta-box {
                padding: 36px 18px;
                border-radius: 18px;
            }
            .cta-box h2 {
                font-size: 21px;
            }
            .footer-links {
                min-width: 120px;
            }
        }

        /* ===== 可访问性 ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

/* roulang page: article */
:root {
            --primary: #0b1522;
            --primary-light: #111f33;
            --accent: #14b8a6;
            --accent-light: #2dd4bf;
            --accent-dark: #0f766e;
            --bg: #0b1522;
            --bg-soft: #f8fafc;
            --card-bg: #152238;
            --card-border: rgba(255, 255, 255, 0.08);
            --text: #e2e8f0;
            --text-muted: #94a3b8;
            --text-dark: #1e293b;
            --text-body: #475569;
            --border-light: rgba(255, 255, 255, 0.1);
            --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.2);
            --shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.35);
            --radius: 20px;
            --radius-sm: 12px;
            --radius-lg: 28px;
            --container-w: 1200px;
            --transition: all 0.28s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 21, 34, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
        }

        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: var(--transition);
        }

        .brand-logo:hover {
            opacity: 0.88;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-light), var(--accent-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 8px 20px rgba(20, 184, 166, 0.3);
            flex-shrink: 0;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-light);
            border-radius: 100px;
            padding: 0 6px 0 16px;
            transition: var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.12);
        }

        .header-search input {
            background: transparent;
            border: none;
            color: #fff;
            height: 38px;
            width: 200px;
            outline: none;
            font-size: 14px;
        }

        .header-search input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        .header-search button {
            background: transparent;
            border: none;
            color: rgba(255, 255, 255, 0.5);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            transition: var(--transition);
        }

        .header-search button:hover {
            color: var(--accent-light);
        }

        .btn-header {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-light), var(--accent-dark));
            color: #fff;
            border-radius: 100px;
            padding: 9px 20px;
            font-size: 14px;
            font-weight: 700;
            transition: var(--transition);
            border: none;
            white-space: nowrap;
        }

        .btn-header:hover {
            box-shadow: 0 8px 24px rgba(20, 184, 166, 0.35);
            transform: translateY(-1px);
        }

        .header-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .channel-nav {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            padding: 8px 0 10px;
            scrollbar-width: none;
        }

        .channel-nav::-webkit-scrollbar {
            display: none;
        }

        .channel-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 100px;
            color: var(--text-muted);
            font-weight: 600;
            font-size: 15px;
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .channel-item:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .channel-item.active {
            color: #052822;
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            box-shadow: 0 8px 20px rgba(20, 184, 166, 0.3);
        }

        .article-hero {
            position: relative;
            padding: 72px 0 56px;
            background-size: cover;
            background-position: center;
            min-height: 340px;
            display: flex;
            align-items: center;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(11, 21, 34, 0.93) 0%, rgba(11, 21, 34, 0.78) 50%, rgba(20, 184, 166, 0.3) 100%);
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 24px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .breadcrumb i.fa-chevron-right {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.35);
        }

        .breadcrumb span {
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-hero-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 60px;
        }

        .article-hero-main {
            flex: 1;
            max-width: 780px;
        }

        .badge-category {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(20, 184, 166, 0.2);
            border: 1px solid rgba(20, 184, 166, 0.35);
            color: var(--accent-light);
            padding: 7px 16px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .article-hero h1 {
            font-size: 36px;
            line-height: 1.3;
            color: #fff;
            font-weight: 800;
            margin: 0 0 16px;
            letter-spacing: 0.02em;
        }

        .article-hero-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin: 0 0 24px;
            max-width: 640px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

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

        .article-hero-media {
            flex-shrink: 0;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .hero-ring {
            width: 88px;
            height: 88px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-light), var(--accent-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #fff;
            box-shadow: 0 0 0 12px rgba(20, 184, 166, 0.2), 0 20px 50px rgba(20, 184, 166, 0.35);
            margin-bottom: 18px;
            animation: heroPulse 2.6s infinite;
        }

        @keyframes heroPulse {
            0%,
            100% {
                box-shadow: 0 0 0 8px rgba(20, 184, 166, 0.15), 0 20px 50px rgba(20, 184, 166, 0.3);
            }
            50% {
                box-shadow: 0 0 0 18px rgba(20, 184, 166, 0.06), 0 20px 60px rgba(20, 184, 166, 0.4);
            }
        }

        .hero-media-label {
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: 0.04em;
        }

        .hero-media-sub {
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
            letter-spacing: 0.1em;
            margin-top: 5px;
        }

        .article-content-section {
            background: var(--bg-soft);
            padding: 60px 0;
        }

        .article-body {
            background: #fff;
            border-radius: var(--radius);
            padding: 42px 48px;
            box-shadow: var(--shadow);
        }

        .article-credit {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 20px;
            background: linear-gradient(135deg, #f0fdfa, #ecfeff);
            border: 1px solid #99f6e4;
            border-radius: 14px;
            margin-bottom: 32px;
        }

        .credit-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-light), var(--accent-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
        }

        .article-credit strong {
            display: block;
            color: var(--text-dark);
            font-size: 15px;
        }

        .article-credit span {
            color: #64748b;
            font-size: 13px;
        }

        .article-body h1,
        .article-body h2,
        .article-body h3 {
            color: var(--text-dark);
            line-height: 1.4;
            margin: 32px 0 16px;
        }

        .article-body h1 {
            font-size: 26px;
        }

        .article-body h2 {
            font-size: 23px;
        }

        .article-body h3 {
            font-size: 19px;
        }

        .article-body p {
            color: var(--text-body);
            line-height: 1.9;
            margin-bottom: 18px;
            font-size: 15.5px;
        }

        .article-body ul,
        .article-body ol {
            color: var(--text-body);
            padding-left: 24px;
            margin-bottom: 20px;
            line-height: 1.9;
        }

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

        .article-body img {
            border-radius: 14px;
            max-width: 100%;
            height: auto;
            margin: 26px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: #f8fafc;
            padding: 18px 22px;
            border-radius: 0 12px 12px 0;
            color: #475569;
            margin: 24px 0;
            font-style: normal;
        }

        .article-body a {
            color: var(--accent-dark);
            border-bottom: 1px solid rgba(20, 184, 166, 0.4);
            transition: var(--transition);
        }

        .article-body a:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        .article-body-code {
            background: #0f172a;
            color: #e2e8f0;
            padding: 18px;
            border-radius: 12px;
            overflow-x: auto;
            font-family: "SFMono-Regular", Consolas, monospace;
            font-size: 14px;
            line-height: 1.7;
            margin: 24px 0;
        }

        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid #f1f5f9;
        }

        .tags-label {
            color: #64748b;
            font-size: 14px;
            font-weight: 600;
        }

        .tag-pill {
            display: inline-block;
            background: #f1f5f9;
            color: #475569;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 100px;
            transition: var(--transition);
        }

        .tag-pill:hover {
            background: var(--accent);
            color: #fff;
        }

        .article-actions {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 32px;
            padding-top: 22px;
            border-top: 1px solid #f1f5f9;
        }

        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 22px;
            border-radius: 100px;
            border: 1px solid #cbd5e1;
            color: #475569;
            font-weight: 600;
            transition: var(--transition);
            background: #fff;
        }

        .btn-back:hover {
            border-color: var(--accent);
            color: var(--accent-dark);
            box-shadow: 0 6px 16px rgba(20, 184, 166, 0.15);
            transform: translateX(-2px);
        }

        .btn-primary-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 22px;
            border-radius: 100px;
            background: linear-gradient(135deg, var(--accent-light), var(--accent-dark));
            color: #fff;
            font-weight: 700;
            transition: var(--transition);
            box-shadow: 0 8px 20px rgba(20, 184, 166, 0.22);
            border: none;
        }

        .btn-primary-outline:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(20, 184, 166, 0.35);
        }

        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }

        .not-found-box i {
            font-size: 50px;
            color: var(--accent);
            margin-bottom: 18px;
            display: block;
        }

        .not-found-box h2 {
            font-size: 28px;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: #64748b;
            margin-bottom: 26px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-light), var(--accent-dark));
            color: #fff;
            padding: 14px 28px;
            border-radius: 100px;
            font-weight: 700;
            transition: var(--transition);
            border: none;
            box-shadow: 0 10px 26px rgba(20, 184, 166, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 36px rgba(20, 184, 166, 0.4);
        }

        .article-sidebar {
            position: sticky;
            top: 140px;
        }

        .sidebar-card {
            background: #fff;
            border: 1px solid #e2e8f0;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
            margin-bottom: 24px;
        }

        .sidebar-card h3 {
            font-size: 18px;
            color: var(--text-dark);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid #f1f5f9;
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

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

        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: 10px;
            background: #f8fafc;
            color: #334155;
            font-weight: 600;
            margin-bottom: 10px;
            transition: var(--transition);
            border: 1px solid transparent;
            font-size: 14px;
        }

        .sidebar-card ul li a:hover {
            background: #f0fdfa;
            border-color: var(--accent-light);
            color: var(--accent-dark);
            transform: translateX(4px);
        }

        .sidebar-card ul li a i {
            color: var(--accent);
            width: 18px;
            text-align: center;
        }

        .sidebar-post {
            display: flex;
            gap: 12px;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid #f1f5f9;
            transition: var(--transition);
        }

        .sidebar-post:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .sidebar-post:hover {
            opacity: 0.8;
        }

        .sidebar-post img {
            width: 68px;
            height: 50px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
            background: #e2e8f0;
        }

        .sidebar-post h4 {
            font-size: 14px;
            color: #334155;
            font-weight: 600;
            line-height: 1.5;
            margin: 0;
        }

        .related-section {
            background: var(--primary);
            padding: 72px 0;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 40px;
        }

        .section-head.center {
            flex-direction: column;
            align-items: center;
            text-align: center;
            justify-content: center;
        }

        .section-eyebrow {
            font-size: 13px;
            color: var(--accent-light);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.12em;
        }

        .section-head h2 {
            font-size: 30px;
            color: #fff;
            margin: 8px 0 0;
            line-height: 1.3;
        }

        .section-head p {
            color: var(--text-muted);
            margin: 8px 0 0;
            max-width: 500px;
        }

        .text-link {
            color: var(--accent-light);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .text-link:hover {
            gap: 12px;
            color: #fff;
        }

        .related-card {
            background: var(--card-bg);
            border-radius: 18px;
            overflow: hidden;
            border: 1px solid var(--card-border);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-8px);
            border-color: rgba(20, 184, 166, 0.4);
            box-shadow: var(--shadow-lg);
        }

        .related-card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

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

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

        .card-corner {
            position: absolute;
            top: 12px;
            right: 12px;
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.16);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

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

        .badge-sm {
            display: inline-flex;
            align-items: center;
            width: fit-content;
            background: rgba(20, 184, 166, 0.16);
            color: var(--accent-light);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 100px;
            margin-bottom: 14px;
        }

        .related-card h3 {
            font-size: 18px;
            color: #fff;
            line-height: 1.45;
            margin-bottom: 10px;
            transition: color 0.3s;
        }

        .related-card:hover h3 {
            color: var(--accent-light);
        }

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

        .faq-section {
            background: var(--primary-light);
            padding: 72px 0;
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 14px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.3s;
        }

        .faq-item.open {
            border-color: rgba(20, 184, 166, 0.4);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            text-align: left;
            padding: 20px 24px;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            transition: color 0.3s;
            gap: 16px;
        }

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

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 22px;
        }

        .cta-section {
            padding: 72px 0;
            background: var(--bg);
        }

        .cta-box {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            padding: 64px;
            text-align: center;
            background-size: cover;
            background-position: center;
        }

        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 21, 34, 0.92), rgba(13, 78, 70, 0.85));
        }

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

        .cta-content h2 {
            font-size: 32px;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            max-width: 520px;
            margin: 0 auto 30px;
        }

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

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            padding: 14px 28px;
            border-radius: 100px;
            font-weight: 700;
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.18);
            transform: translateY(-2px);
        }

        .site-footer {
            background: #0a101b;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 60px 0 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            max-width: 380px;
            margin: 0;
        }

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

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

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

        .footer-links a {
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
        }

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

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

        @media (max-width: 1024px) {
            .article-hero {
                padding: 56px 0 44px;
            }
            .article-hero h1 {
                font-size: 30px;
            }
            .article-body {
                padding: 32px;
            }
            .article-hero-media {
                display: none;
            }
            .cta-box {
                padding: 48px 32px;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-search {
                display: none;
            }
            .header-top-inner {
                height: 60px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .article-content-section {
                padding: 40px 0;
            }
            .article-body {
                padding: 24px;
                border-radius: 16px;
            }
            .article-sidebar {
                position: static;
                margin-top: 28px;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
            .section-head.center {
                align-items: center;
            }
            .related-card {
                margin-bottom: 8px;
            }
            .related-grid .cell {
                margin-bottom: 24px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .article-hero {
                min-height: 300px;
            }
            .cta-content h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .brand-logo {
                font-size: 16px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
                border-radius: 10px;
            }
            .btn-header {
                padding: 8px 14px;
                font-size: 13px;
            }
            .channel-item {
                padding: 8px 14px;
                font-size: 14px;
            }
            .article-hero {
                min-height: 280px;
                padding: 44px 0 32px;
            }
            .article-hero h1 {
                font-size: 24px;
            }
            .article-hero-desc {
                font-size: 14px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
            .article-body {
                padding: 20px 16px;
            }
            .article-credit {
                padding: 14px;
                flex-direction: column;
                text-align: center;
            }
            .article-body h2 {
                font-size: 20px;
            }
            .article-body h3 {
                font-size: 17px;
            }
            .article-body p {
                font-size: 14.5px;
            }
            .article-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-back,
            .btn-primary-outline {
                justify-content: center;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px;
            }
            .faq-answer {
                font-size: 14px;
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 18px;
            }
            .cta-box {
                padding: 40px 20px;
            }
            .cta-content h2 {
                font-size: 22px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .cta-buttons .btn-primary,
            .cta-buttons .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .footer-bottom {
                font-size: 13px;
            }
            .breadcrumb span {
                max-width: 200px;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #0b6bf2;
  --primary-dark: #0a4eb5;
  --primary-light: #eaf2ff;
  --secondary: #00c9a7;
  --bg-body: #f4f8fd;
  --bg-surface: #ffffff;
  --bg-dark: #0d1b2e;
  --text-main: #0f172a;
  --text-weak: #5b6b82;
  --border-color: #e3eaf3;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 8px rgba(15, 42, 92, .06);
  --shadow-md: 0 8px 24px rgba(15, 42, 92, .08);
  --shadow-lg: 0 20px 48px rgba(15, 42, 92, .14);
  --section-gap: 84px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
input, button, textarea { font-family: inherit; outline: none; }
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 40px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all .25s ease;
  line-height: 1.4;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(11,107,242,.28);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(11,107,242,.35); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 6px rgba(11,107,242,.25); }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary-light); transform: translateY(-2px); }
.btn-light {
  background: #fff;
  color: var(--text-main);
  box-shadow: 0 4px 14px rgba(0,0,0,.12);
}
.btn-light:hover { background: #f1f5fb; transform: translateY(-2px); }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-lg { padding: 16px 36px; font-size: 16px; }
/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: var(--bg-surface);
  box-shadow: 0 2px 14px rgba(15,42,92,.08);
}
.header-top {
  padding: 14px 0;
  border-bottom: 1px solid var(--border-color);
}
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 12px rgba(11,107,242,.3);
}
.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: .5px;
}
.header-actions { display: flex; align-items: center; gap: 12px; }
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: 40px;
  padding: 4px 6px 4px 16px;
  transition: border-color .25s, box-shadow .25s;
}
.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(11,107,242,.12);
}
.search-box input {
  border: none;
  background: transparent;
  padding: 6px 8px;
  width: 190px;
  font-size: 14px;
  color: var(--text-main);
}
.search-box input::placeholder { color: #9aabbe; }
.search-box button {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: none;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s;
}
.search-box button:hover { background: var(--primary-dark); }
/* ===== Channel Nav ===== */
.channel-nav-wrap { border-bottom: 1px solid var(--border-color); background: var(--bg-surface); }
.channel-nav {
  display: flex;
  gap: 6px;
  padding: 8px 0;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.channel-nav::-webkit-scrollbar { display: none; }
.channel-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 20px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-weak);
  white-space: nowrap;
  transition: all .2s ease;
  border: 1px solid transparent;
}
.channel-item:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.channel-item.active {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(11,107,242,.28);
}
/* ===== Banner ===== */
.page-banner {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 96px 0 100px;
  color: #fff;
  text-align: center;
  overflow: hidden;
}
.banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(7,28,62,.86), rgba(11,80,140,.62));
  z-index: 1;
}
.banner-container { position: relative; z-index: 2; }
.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 18px;
  border-radius: 40px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.25);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 18px;
  backdrop-filter: blur(4px);
}
.page-banner h1 {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.page-banner p {
  font-size: 17px;
  max-width: 640px;
  margin: 0 auto 32px;
  color: rgba(255,255,255,.88);
  line-height: 1.7;
}
.banner-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
/* ===== Section ===== */
.section { padding: var(--section-gap) 0; }
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 52px;
}
.section-tag {
  display: inline-block;
  padding: 5px 14px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 10px;
}
.section-head p {
  color: var(--text-weak);
  font-size: 15px;
}
/* ===== Help Cards ===== */
.help-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color);
  position: relative;
}
.help-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.help-card .card-img-wrap {
  position: relative;
  height: 170px;
  overflow: hidden;
}
.help-card .card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.help-card:hover .card-img-wrap img { transform: scale(1.06); }
.card-body { padding: 24px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.card-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 21px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(11,107,242,.3);
  margin-bottom: 16px;
}
.card-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.card-body p { font-size: 14px; color: var(--text-weak); line-height: 1.65; margin-bottom: 16px; flex: 1; }
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: gap .2s ease;
}
.card-link:hover { gap: 12px; }
/* ===== Guides ===== */
.guides-section { background: var(--bg-surface); border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.guide-item {
  display: flex;
  align-items: center;
  gap: 40px;
  background: var(--bg-body);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: box-shadow .3s ease, transform .3s ease;
}
.guide-item:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.guide-thumb { flex: 0 0 340px; border-radius: var(--radius-md); overflow: hidden; }
.guide-thumb img { width: 100%; height: 200px; object-fit: cover; }
.guide-info { flex: 1; }
.guide-info h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.guide-info p { color: var(--text-weak); line-height: 1.7; font-size: 15px; margin-bottom: 14px; }
.guide-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.guide-tag {
  display: inline-block;
  padding: 3px 12px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}
/* ===== Steps ===== */
.steps-section {
  background: var(--bg-dark);
  color: #fff;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  position: relative;
}
.steps-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(13,27,46,.88);
}
.steps-section .container { position: relative; z-index: 2; }
.steps-section .section-tag { background: rgba(255,255,255,.12); color: #fff; }
.steps-section .section-head h2 { color: #fff; }
.steps-section .section-head p { color: rgba(255,255,255,.75); }
.step-card {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  backdrop-filter: blur(6px);
  transition: transform .3s ease, background .3s ease;
  height: 100%;
}
.step-card:hover { transform: translateY(-6px); background: rgba(255,255,255,.12); }
.step-num {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 6px 18px rgba(0,0,0,.3);
}
.step-card h4 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: rgba(255,255,255,.7); line-height: 1.7; }
/* ===== Trending ===== */
.trending-section { background: var(--bg-body); }
.trending-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  align-items: start;
}
.rank-list li {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-surface);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  margin-bottom: 10px;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s;
}
.rank-list li:hover { transform: translateX(6px); box-shadow: var(--shadow-md); }
.rank-num {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  flex-shrink: 0;
}
.rank-list li:nth-child(1) .rank-num,
.rank-list li:nth-child(2) .rank-num,
.rank-list li:nth-child(3) .rank-num { background: linear-gradient(135deg, #ffb800, #ff9500); color: #fff; }
.rank-list li:not(:last-child) .rank-text { border-bottom: none; }
.rank-text { font-size: 15px; font-weight: 500; }
.trending-side { position: sticky; top: 140px; }
.side-card {
  background: linear-gradient(135deg, var(--primary), #0560c8);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  color: #fff;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.side-card::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
}
.side-card h3 { font-size: 22px; font-weight: 800; margin-bottom: 12px; }
.side-card p { font-size: 14px; color: rgba(255,255,255,.85); line-height: 1.7; margin-bottom: 20px; }
/* ===== FAQ ===== */
.faq-section { background: var(--bg-surface); }
.faq-list { max-width: 840px; margin: 0 auto; }
.faq-item {
  background: var(--bg-body);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  border: 1px solid var(--border-color);
  transition: box-shadow .25s;
}
.faq-item.open { box-shadow: var(--shadow-md); background: #fff; }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}
.faq-question i {
  color: var(--primary);
  transition: transform .3s;
  flex-shrink: 0;
}
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .3s ease;
  padding: 0 24px;
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 280px; padding-bottom: 22px; }
/* ===== CTA ===== */
.cta-section { padding: 40px 0 90px; }
.cta-inner {
  background: linear-gradient(135deg, var(--primary) 0%, #0468e0 45%, var(--secondary) 100%);
  border-radius: 28px;
  padding: 58px 48px;
  text-align: center;
  color: #fff;
  box-shadow: 0 20px 48px rgba(11,107,242,.3);
  position: relative;
  overflow: hidden;
}
.cta-inner::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -40px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
}
.cta-inner h2 { font-size: 30px; font-weight: 800; margin-bottom: 14px; }
.cta-inner p { font-size: 16px; color: rgba(255,255,255,.9); margin-bottom: 30px; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
/* ===== Footer ===== */
.site-footer { background: var(--bg-dark); color: #cbd5e1; padding: 56px 0 24px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; padding-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer-brand .footer-logo { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.footer-logo .logo-icon { width: 38px; height: 38px; font-size: 17px; }
.footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(203,213,225,.7); max-width: 340px; }
.footer-links h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
.footer-links ul li { margin-bottom: 10px; }
.footer-links ul li a { font-size: 14px; color: rgba(203,213,225,.7); transition: color .2s, padding-left .2s; }
.footer-links ul li a:hover { color: #fff; padding-left: 4px; }
.footer-bottom { padding-top: 24px; text-align: center; font-size: 13px; color: rgba(203,213,225,.55); }
/* ===== Focus ===== */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 3px solid rgba(11,107,242,.35);
  outline-offset: 2px;
}
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .trending-layout { grid-template-columns: 1fr; }
  .trending-side { position: static; margin-top: 30px; }
  .guide-thumb { flex-basis: 280px; }
  .page-banner h1 { font-size: 34px; }
}
@media (max-width: 768px) {
  :root { --section-gap: 60px; }
  .header-top { padding: 10px 0; }
  .search-box { display: none; }
  .logo-text { font-size: 17px; }
  .logo-icon { width: 36px; height: 36px; font-size: 16px; }
  .btn-sm { padding: 7px 14px; font-size: 13px; }
  .page-banner { padding: 64px 0; }
  .page-banner h1 { font-size: 27px; }
  .page-banner p { font-size: 15px; }
  .section-head h2 { font-size: 26px; }
  .guide-item { flex-direction: column; gap: 24px; padding: 20px; }
  .guide-thumb { flex: 1 1 auto; width: 100%; }
  .guide-thumb img { height: 180px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 30px; }
  .cta-inner { padding: 40px 24px; }
  .cta-inner h2 { font-size: 24px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .header-top-inner { flex-wrap: wrap; }
  .btn-lg { padding: 12px 24px; font-size: 15px; }
  .banner-actions { flex-direction: column; align-items: center; }
  .banner-actions .btn { width: 200px; }
  .page-banner h1 { font-size: 23px; }
  .page-banner p { font-size: 14px; }
  .card-body h3 { font-size: 17px; }
  .step-card { padding: 22px 18px; }
  .footer-top { grid-template-columns: 1fr; gap: 24px; }
  .footer-brand p { max-width: 100%; }
  .rank-list li { padding: 14px 14px; }
  .faq-question { font-size: 14px; padding: 16px 18px; }
  .faq-answer { padding: 0 18px; }
  .faq-item.open .faq-answer { padding-bottom: 18px; }
}