/* roulang page: index */
:root {
            --primary: #3B82F6;
            --primary-dark: #1E40AF;
            --primary-light: #EFF6FF;
            --accent: #F97316;
            --accent-hover: #EA580C;
            --bg: #F8FAFC;
            --card: #FFFFFF;
            --title: #0F172A;
            --body: #334155;
            --muted: #94A3B8;
            --border: #E2E8F0;
            --input-border: #CBD5E1;
            --success: #10B981;
            --warning: #F59E0B;
            --error: #EF4444;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.10);
            --shadow-btn: 0 2px 6px rgba(59, 130, 246, 0.15);
            --container: 1200px;
            --space-section: 80px;
            --transition: all 0.25s ease;
        }

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

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

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            background: var(--bg);
            color: var(--body);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 14px;
        }

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

        .bg-cover {
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

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

        .section-alt {
            background: #FFFFFF;
        }

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

        .section-header .section-title {
            font-size: 26px;
            font-weight: 600;
            color: var(--title);
            line-height: 1.35;
            margin-bottom: 8px;
        }

        .section-header .section-subtitle {
            font-size: 14px;
            color: var(--muted);
            max-width: 560px;
            margin: 0 auto;
        }

        /* ===== Header & Nav ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            height: 72px;
            transition: var(--transition);
        }

        .header.scrolled {
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
        }

        .header-inner {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

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

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--primary-light);
            padding: 7px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 600;
            color: var(--title);
            line-height: 1.2;
            white-space: nowrap;
        }

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

        .nav-tabs {
            display: flex;
            background: #F1F5F9;
            border-radius: 10px;
            padding: 4px;
            gap: 2px;
            flex-shrink: 0;
        }

        .nav-tab {
            padding: 7px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            color: #475569;
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-tab:hover {
            color: var(--title);
            background: rgba(255, 255, 255, 0.7);
        }

        .nav-tab.active {
            background: var(--title);
            color: #fff;
            font-weight: 500;
        }

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

        .btn-login {
            background: var(--primary);
            color: #fff;
            padding: 9px 24px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            box-shadow: var(--shadow-btn);
            transition: var(--transition);
        }

        .btn-login:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 15px;
            padding: 10px 24px;
            transition: var(--transition);
            line-height: 1.4;
            border: none;
            cursor: pointer;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(249, 115, 22, 0.2);
        }

        .btn-accent:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-secondary {
            background: #fff;
            border: 1px solid var(--input-border);
            color: var(--body);
        }

        .btn-secondary:hover {
            background: #F1F5F9;
            border-color: var(--border);
            color: var(--title);
        }

        .btn-large {
            height: 48px;
            padding: 0 32px;
            font-size: 16px;
        }

        .btn-block {
            width: 100%;
        }

        @media (max-width: 480px) {
            .btn-large {
                width: 100%;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 72px 0 64px;
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.10) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: 20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            display: flex;
            align-items: center;
            gap: 56px;
            position: relative;
            z-index: 1;
        }

        .hero-content {
            flex: 1 1 50%;
        }

        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 24px;
        }

        .hero-content .hero-badge svg {
            width: 14px;
            height: 14px;
        }

        .hero-content h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--title);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .hero-content h1 .line-break {
            display: block;
        }

        .hero-content .hero-subtitle {
            font-size: 16px;
            color: #475569;
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 460px;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border);
        }

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

        .hero-stat .stat-value {
            font-size: 20px;
            font-weight: 600;
            color: var(--title);
            font-variant-numeric: tabular-nums;
        }

        .hero-stat .stat-label {
            font-size: 13px;
            color: var(--muted);
            margin-top: 2px;
        }

        .hero-image-wrap {
            flex: 1 1 50%;
            position: relative;
        }

        .hero-image {
            border-radius: 20px;
            height: 380px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            position: relative;
            box-shadow: var(--shadow-md);
        }

        .hero-image::before {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: 20px;
            background: linear-gradient(180deg, rgba(255, 255, 255, 0) 40%, rgba(15, 23, 42, 0.06) 100%);
        }

        .hero-cert {
            position: absolute;
            top: 16px;
            right: 16px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            gap: 6px;
            box-shadow: var(--shadow-sm);
        }

        .hero-cert svg {
            width: 14px;
            height: 14px;
        }

        .hero-float-card {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: #fff;
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            padding: 14px 18px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hero-float-card .fc-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            flex-shrink: 0;
        }

        .hero-float-card .fc-text {
            font-size: 13px;
            color: var(--body);
            line-height: 1.4;
        }

        .hero-float-card .fc-text strong {
            display: block;
            font-size: 15px;
            color: var(--title);
        }

        @media (max-width: 1080px) {
            .hero-inner {
                flex-direction: column;
                gap: 40px;
            }
            .hero-image-wrap {
                width: 100%;
            }
            .hero-image {
                height: 300px;
            }
        }

        /* ===== Compare Table ===== */
        .compare-section {
            padding: var(--space-section) 0;
            background: #fff;
        }

        .compare-table-wrap {
            max-width: 760px;
            margin: 0 auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
        }

        .compare-table th,
        .compare-table td {
            padding: 14px 24px;
            text-align: left;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
        }

        .compare-table thead th {
            background: #F8FAFC;
            font-weight: 600;
            color: var(--title);
            font-size: 15px;
            padding-top: 18px;
            padding-bottom: 18px;
            position: relative;
        }

        .compare-table thead th.member-col {
            background: var(--primary-light);
        }

        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }

        .compare-table tbody tr {
            transition: background 0.2s;
        }

        .compare-table tbody tr:hover {
            background: var(--bg);
        }

        .compare-table td.free-col {
            color: var(--body);
        }

        .compare-table td.member-col {
            background: var(--primary-light);
            color: var(--title);
            font-weight: 500;
        }

        .compare-table .check-icon {
            color: var(--primary);
            font-weight: 700;
        }

        .compare-table .dash-icon {
            color: var(--muted);
        }

        .compare-table .member-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 11px;
            font-weight: 500;
            padding: 2px 10px;
            border-radius: 999px;
            margin-left: 8px;
            vertical-align: middle;
        }

        @media (max-width: 600px) {
            .compare-table-wrap {
                overflow-x: auto;
            }
            .compare-table {
                min-width: 480px;
            }
        }

        /* ===== Levels ===== */
        .levels-section {
            padding: var(--space-section) 0;
        }

        .levels-grid {
            display: flex;
            gap: 24px;
            justify-content: center;
            align-items: flex-end;
        }

        .level-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 32px 28px;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            width: 300px;
            position: relative;
        }

        .level-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }

        .level-card.lv-1 {
            height: 300px;
        }
        .level-card.lv-2 {
            height: 320px;
        }
        .level-card.lv-3 {
            height: 340px;
            border-color: var(--primary);
        }
        .level-card.lv-4 {
            height: 360px;
        }

        .level-card .level-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--border);
            font-variant-numeric: tabular-nums;
            margin-bottom: 16px;
        }

        .level-card.lv-3 .level-number {
            color: var(--primary);
        }

        .level-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: var(--primary);
        }

        .level-card .level-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--title);
            margin-bottom: 6px;
        }

        .level-card .level-condition {
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 16px;
        }

        .level-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: auto;
        }

        .level-tags .tag {
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--body);
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 999px;
        }

        .level-hot {
            position: absolute;
            top: -10px;
            right: 20px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
            padding: 2px 12px;
            border-radius: 999px;
            box-shadow: var(--shadow-btn);
        }

        @media (max-width: 1080px) {
            .levels-grid {
                flex-wrap: wrap;
                gap: 16px;
            }
            .level-card {
                width: calc(50% - 8px);
                height: auto !important;
            }
        }

        @media (max-width: 768px) {
            .levels-grid {
                flex-direction: column;
                align-items: stretch;
            }
            .level-card {
                width: 100%;
            }
        }

        /* ===== Featured Cards ===== */
        .featured-section {
            padding: var(--space-section) 0;
            background: #fff;
        }

        .featured-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .featured-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
        }

        .featured-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--primary);
        }

        .featured-large {
            grid-column: 1 / -1;
            display: flex;
            flex-direction: row;
            align-items: stretch;
        }

        .featured-large .card-cover {
            width: 60%;
            min-height: 240px;
            background-image: url('/assets/images/coverpic/cover-1.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .featured-large .card-body {
            width: 40%;
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .featured-small {
            display: flex;
            flex-direction: column;
        }

        .featured-small .card-cover {
            height: 160px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .featured-small:nth-child(2) .card-cover {
            background-image: url('/assets/images/coverpic/cover-2.webp');
        }

        .featured-small:nth-child(3) .card-cover {
            background-image: url('/assets/images/coverpic/cover-3.webp');
        }

        .featured-small .card-body {
            padding: 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .featured-bar {
            grid-column: 1 / -1;
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 24px 32px;
        }

        .featured-bar .bar-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .featured-bar .bar-text {
            flex: 1;
        }

        .featured-bar .bar-text h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--title);
            margin-bottom: 2px;
        }

        .featured-bar .bar-text p {
            font-size: 14px;
            color: var(--muted);
        }

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

        .card-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--title);
            line-height: 1.4;
            margin-bottom: 8px;
        }

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

        .card-body .card-footer {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .card-body .card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
        }

        .card-body .card-link:hover {
            color: var(--primary-dark);
        }

        .vip-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: 999px;
            z-index: 2;
            box-shadow: 0 2px 6px rgba(249, 115, 22, 0.3);
        }

        @media (max-width: 768px) {
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .featured-large {
                flex-direction: column;
            }
            .featured-large .card-cover {
                width: 100%;
                min-height: 200px;
            }
            .featured-large .card-body {
                width: 100%;
            }
            .featured-bar {
                flex-direction: column;
                text-align: center;
                padding: 24px;
            }
        }

        /* ===== Category Entry ===== */
        .category-section {
            padding: var(--space-section) 0;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

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

        .category-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--primary);
        }

        .category-card .cat-cover {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .category-card:nth-child(1) .cat-cover {
            background-image: url('/assets/images/coverpic/cover-5.webp');
        }

        .category-card:nth-child(2) .cat-cover {
            background-image: url('/assets/images/coverpic/cover-6.webp');
        }

        .category-card .cat-body {
            padding: 24px 28px;
        }

        .category-card .cat-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--title);
            margin-bottom: 8px;
        }

        .category-card .cat-body p {
            font-size: 14px;
            color: #475569;
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .category-card .cat-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        @media (max-width: 768px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== News List ===== */
        .news-section {
            padding: var(--space-section) 0;
            background: #fff;
        }

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

        .news-list .news-item {
            border-bottom: 1px solid var(--border);
            transition: background 0.2s;
        }

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

        .news-list .news-item a {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 16px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .news-list .news-item a:hover {
            background: var(--bg);
        }

        .news-date {
            flex-shrink: 0;
            text-align: center;
            background: var(--primary-light);
            border-radius: 10px;
            padding: 6px 14px;
            min-width: 56px;
        }

        .news-date .day {
            display: block;
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .news-date .month {
            display: block;
            font-size: 12px;
            color: var(--muted);
        }

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

        .news-info .news-title {
            display: block;
            font-size: 16px;
            font-weight: 500;
            color: var(--title);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .news-info .news-summary {
            display: block;
            font-size: 13px;
            color: var(--muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .news-cat {
            flex-shrink: 0;
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--body);
            font-size: 12px;
            padding: 3px 12px;
            border-radius: 999px;
        }

        .news-arrow {
            flex-shrink: 0;
            color: var(--muted);
            font-size: 18px;
            transition: var(--transition);
        }

        .news-item a:hover .news-arrow {
            color: var(--primary);
            transform: translateX(3px);
        }

        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--muted);
            font-size: 14px;
            background: var(--bg);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border);
        }

        @media (max-width: 640px) {
            .news-list .news-item a {
                gap: 12px;
                padding: 16px 8px;
            }
            .news-info .news-summary {
                display: none;
            }
            .news-cat {
                display: none;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--space-section) 0;
        }

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

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            overflow: hidden;
            transition: border-color 0.3s;
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            text-align: left;
            background: transparent;
            font-size: 15px;
            font-weight: 500;
            color: var(--title);
            transition: var(--transition);
        }

        .faq-question:hover {
            background: var(--bg);
        }

        .faq-question .q-icon {
            width: 24px;
            height: 24px;
            border-radius: 6px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .faq-question .q-text {
            flex: 1;
        }

        .faq-question .chevron {
            width: 16px;
            height: 16px;
            flex-shrink: 0;
            transition: transform 0.3s;
        }

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

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

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

        .faq-answer p {
            padding: 0 20px 18px;
            font-size: 14px;
            color: #475569;
            line-height: 1.75;
            padding-left: 60px;
        }

        @media (max-width: 640px) {
            .faq-answer p {
                padding-left: 20px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--space-section) 0;
            background: #fff;
        }

        .cta-box {
            background: var(--primary-light);
            border-radius: 20px;
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.10) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-box::after {
            content: "";
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.06) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-box > * {
            position: relative;
            z-index: 1;
        }

        .cta-box h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--title);
            margin-bottom: 12px;
        }

        .cta-box p {
            font-size: 15px;
            color: #475569;
            margin-bottom: 32px;
        }

        .cta-payments {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }

        .cta-payments .pay-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 8px 18px;
            font-size: 13px;
            color: var(--body);
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: var(--shadow-sm);
        }

        .cta-payments .pay-item svg {
            width: 16px;
            height: 16px;
            color: var(--primary);
        }

        @media (max-width: 480px) {
            .cta-box {
                padding: 40px 20px;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: #1E293B;
            color: #CBD5E1;
            padding-top: 56px;
            border-top: 1px solid #334155;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px 40px;
        }

        .footer-brand .logo {
            margin-bottom: 12px;
        }

        .footer-brand .logo-icon {
            background: rgba(59, 130, 246, 0.2);
        }

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

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

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #94A3B8;
            max-width: 280px;
            margin-top: 8px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

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

        .footer-col ul a {
            font-size: 14px;
            color: #94A3B8;
            transition: color 0.2s;
        }

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

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: #94A3B8;
            margin-bottom: 10px;
        }

        .footer-contact li svg {
            width: 16px;
            height: 16px;
            flex-shrink: 0;
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding: 20px 0;
            text-align: center;
            font-size: 12px;
            color: #64748B;
        }

        .footer-bottom .container {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        /* ===== Responsive Header ===== */
        @media (max-width: 992px) {
            .nav-tab {
                padding: 6px 12px;
                font-size: 13px;
            }
            .logo-text {
                font-size: 17px;
            }
        }

        @media (max-width: 768px) {
            .header {
                height: 60px;
            }
            .header-inner {
                height: 60px;
                gap: 12px;
                padding: 0 16px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                padding: 5px;
            }
            .logo-text {
                font-size: 16px;
            }
            .nav-tabs {
                overflow-x: auto;
                scrollbar-width: none;
                -ms-overflow-style: none;
                flex-shrink: 1;
                min-width: 0;
            }
            .nav-tabs::-webkit-scrollbar {
                display: none;
            }
            .nav-tab {
                white-space: nowrap;
            }
            .btn-login {
                padding: 6px 12px;
                font-size: 13px;
            }
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 56px 0;
            }
            .hero {
                padding: 40px 0 48px;
            }
            .hero-inner {
                gap: 28px;
            }
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-content .hero-subtitle {
                font-size: 15px;
            }
            .hero-stats {
                gap: 16px;
                margin-top: 24px;
                padding-top: 20px;
            }
            .hero-image {
                height: 220px;
            }
            .hero-float-card {
                display: none;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-header .section-title {
                font-size: 22px;
            }
            .compare-table-wrap {
                border-radius: var(--radius-md);
            }
            .levels-grid {
                gap: 12px;
            }
            .footer-grid {
                padding-bottom: 32px;
            }
        }

        @media (max-width: 480px) {
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-actions .btn-secondary {
                width: 100%;
            }
            .featured-large .card-cover {
                min-height: 180px;
            }
            .featured-bar {
                padding: 20px;
            }
            .category-card .cat-body {
                padding: 20px;
            }
            .news-date {
                min-width: 44px;
                padding: 4px 8px;
            }
            .news-date .day {
                font-size: 16px;
            }
            .cta-box h2 {
                font-size: 22px;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(59, 130, 246, 0.4);
            outline-offset: 2px;
        }

/* roulang page: category1 */
:root {
            --primary: #3B82F6;
            --primary-dark: #1E40AF;
            --primary-light: #EFF6FF;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --bg: #F8FAFC;
            --card: #FFFFFF;
            --title: #0F172A;
            --text: #334155;
            --text-weak: #94A3B8;
            --border: #E2E8F0;
            --input-border: #CBD5E1;
            --success: #10B981;
            --warning: #F59E0B;
            --error: #EF4444;
            --footer-bg: #1E293B;
            --footer-text: #CBD5E1;
            --footer-border: #334155;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 3px rgba(15,23,42,0.06);
            --shadow-hover: 0 8px 30px rgba(15,23,42,0.10);
            --shadow-btn: 0 2px 6px rgba(59,130,246,0.15);
            --container-max: 1200px;
            --space-section: 80px;
            --transition: 0.25s ease;
        }

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

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

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        /* ===================== Header ===================== */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            height: 72px;
            transition: box-shadow 0.3s;
        }

        .header.scrolled {
            box-shadow: 0 2px 12px rgba(15,23,42,0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: 100%;
        }

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

        .logo-icon {
            width: 34px;
            height: 34px;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 10px;
            padding: 6px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--title);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            background: #F1F5F9;
            padding: 4px;
            border-radius: 999px;
            height: 40px;
        }

        .nav-tab {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0 20px;
            height: 32px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: #475569;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-tab:hover {
            color: var(--title);
            background: rgba(255,255,255,0.6);
        }

        .nav-tab.active {
            background: var(--title);
            color: #FFFFFF;
            box-shadow: 0 1px 4px rgba(15,23,42,0.2);
        }

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

        .btn-login {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 22px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            box-shadow: var(--shadow-btn);
            transition: all var(--transition);
        }

        .btn-login:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-login:active {
            transform: translateY(0);
        }

        /* ===================== Hero ===================== */
        .category-hero {
            position: relative;
            padding: 72px 0;
            background: var(--primary-light);
            background-image: radial-gradient(circle at 85% 20%, rgba(59,130,246,0.10) 0%, transparent 60%), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(255,255,255,0.86);
        }

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

        .hero-breadcrumb {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 20px;
        }

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

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

        .hero-breadcrumb .sep {
            margin: 0 8px;
            color: var(--border);
        }

        .hero-breadcrumb .current {
            color: var(--text-weak);
        }

        .category-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--title);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .hero-divider {
            width: 64px;
            height: 4px;
            background: var(--primary);
            border-radius: 999px;
            margin-bottom: 20px;
        }

        .category-hero p {
            max-width: 640px;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
        }

        .hero-meta {
            display: flex;
            gap: 24px;
            margin-top: 28px;
            flex-wrap: wrap;
        }

        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text);
            background: rgba(255,255,255,0.9);
            padding: 6px 14px;
            border-radius: 999px;
            border: 1px solid var(--border);
        }

        .hero-meta-item svg {
            width: 16px;
            height: 16px;
            color: var(--primary);
        }

        /* ===================== Section ===================== */
        .section {
            padding: var(--space-section) 0;
        }

        .section-alt {
            background: #FFFFFF;
        }

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

        .section-head h2 {
            font-size: 26px;
            font-weight: 600;
            color: var(--title);
            line-height: 1.35;
            margin-bottom: 8px;
        }

        .section-head p {
            font-size: 15px;
            color: var(--text-weak);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-head .head-bar {
            width: 48px;
            height: 3px;
            background: var(--primary);
            border-radius: 999px;
            margin: 16px auto 0;
        }

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

        .stat-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .stat-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text);
            margin-top: 8px;
            font-weight: 500;
        }

        .stat-desc {
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 4px;
        }

        /* ===================== Compare Table ===================== */
        .compare-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: #FFFFFF;
            min-width: 640px;
        }

        .compare-table th,
        .compare-table td {
            padding: 16px 24px;
            text-align: left;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
        }

        .compare-table thead th {
            background: #F8FAFC;
            font-weight: 600;
            color: var(--title);
            vertical-align: middle;
            border-bottom: 2px solid var(--border);
        }

        .compare-table .member-head {
            background: var(--primary-light);
            position: relative;
            border-left: 3px solid var(--primary);
        }

        .compare-table .member-head .pill-badge {
            display: inline-block;
            background: var(--accent);
            color: #FFFFFF;
            font-size: 11px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 999px;
            margin-left: 8px;
            vertical-align: middle;
        }

        .compare-table tbody .member-col {
            background: var(--primary-light);
            border-left: 3px solid var(--primary);
            color: var(--title);
            font-weight: 500;
        }

        .compare-table tbody tr:hover td {
            background: #F8FAFC;
        }

        .compare-table tbody tr:hover td.member-col {
            background: #E0EDFF;
        }

        .icon-yes {
            color: var(--success);
            font-weight: 700;
            margin-right: 4px;
        }

        .icon-no {
            color: var(--text-weak);
            margin-right: 4px;
        }

        /* ===================== Level Cards ===================== */
        .level-grid {
            display: flex;
            align-items: flex-end;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
        }

        .level-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            width: 250px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            position: relative;
            transition: all var(--transition);
        }

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

        .level-card.level-1 { height: 300px; }
        .level-card.level-2 { height: 330px; }
        .level-card.level-3 { height: 360px; border: 2px solid var(--primary); }
        .level-card.level-4 { height: 390px; }

        .level-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-weak);
            letter-spacing: 1px;
            font-variant-numeric: tabular-nums;
        }

        .level-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 12px 0;
        }

        .level-icon svg {
            width: 24px;
            height: 24px;
            color: var(--primary);
        }

        .level-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--title);
            margin-bottom: 4px;
        }

        .level-condition {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 14px;
        }

        .level-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: auto;
        }

        .level-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border: 1px solid rgba(59,130,246,0.2);
        }

        .level-badge {
            position: absolute;
            top: -10px;
            right: 16px;
            background: var(--accent);
            color: #FFFFFF;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
        }

        /* ===================== Scene Cards ===================== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

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

        .scene-img {
            height: 180px;
            background: url('/assets/images/coverpic/cover-1.png') center/cover no-repeat;
            position: relative;
        }

        .scene-img-2 {
            background-image: url('/assets/images/coverpic/cover-2.webp');
        }

        .scene-img-3 {
            background-image: url('/assets/images/coverpic/cover-3.webp');
        }

        .scene-body {
            padding: 24px;
        }

        .scene-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--title);
            margin-bottom: 8px;
        }

        .scene-body p {
            font-size: 14px;
            color: var(--text);
            line-height: 1.7;
        }

        .scene-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            margin-top: 16px;
            transition: gap var(--transition);
        }

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

        /* ===================== Flow Steps ===================== */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .flow-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            position: relative;
            transition: all var(--transition);
        }

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

        .flow-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 999px;
            background: var(--primary);
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            margin: 0 auto 16px;
        }

        .flow-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--title);
            margin-bottom: 8px;
        }

        .flow-item p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* ===================== FAQ ===================== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 8px;
            overflow: hidden;
            transition: border-color var(--transition);
        }

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

        .faq-q {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--title);
        }

        .faq-q .q-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .faq-q .chevron {
            margin-left: auto;
            width: 20px;
            height: 20px;
            color: var(--text-weak);
            transition: transform 0.3s;
            flex-shrink: 0;
        }

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

        .faq-a {
            padding: 0 20px 16px 56px;
            font-size: 14px;
            color: #475569;
            line-height: 1.7;
            display: none;
        }

        .faq-item.open .faq-a {
            display: block;
        }

        /* ===================== CTA ===================== */
        .cta-section {
            padding: 72px 0;
            background: var(--primary-light);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            position: relative;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(239,246,255,0.92);
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--title);
            margin-bottom: 12px;
        }

        .cta-inner p {
            font-size: 15px;
            color: var(--text);
            margin-bottom: 24px;
        }

        .cta-pay-icons {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .pay-icon {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text);
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 16px;
        }

        .pay-icon svg {
            width: 16px;
            height: 16px;
            color: var(--primary);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            box-shadow: var(--shadow-btn);
            transition: all var(--transition);
        }

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

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-accent {
            background: var(--accent);
            box-shadow: 0 2px 6px rgba(249,115,22,0.2);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
        }

        /* ===================== Footer ===================== */
        .footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 56px 0 0;
        }

        .footer-grid {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
        }

        .footer .logo-text {
            color: #FFFFFF;
        }

        .footer .logo-icon {
            background: rgba(255,255,255,0.1);
            color: #93C5FD;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 12px;
            color: #94A3B8;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 14px;
        }

        .footer-col ul li a {
            color: var(--footer-text);
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: #FFFFFF;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact svg {
            width: 16px;
            height: 16px;
            color: #64748B;
        }

        .footer-bottom {
            border-top: 1px solid var(--footer-border);
            margin-top: 48px;
            padding: 20px 0;
        }

        .footer-bottom .container {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: #64748B;
        }

        /* ===================== Responsive ===================== */
        @media (max-width: 1080px) {
            .nav-tab {
                padding: 0 14px;
                font-size: 13px;
            }

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

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

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

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

        @media (max-width: 768px) {
            .header {
                height: 60px;
            }

            .logo-text {
                font-size: 16px;
            }

            .logo-icon {
                width: 28px;
                height: 28px;
            }

            .nav-tabs {
                overflow-x: auto;
                scrollbar-width: none;
                -ms-overflow-style: none;
                max-width: calc(100vw - 180px);
                height: 36px;
            }

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

            .nav-tab {
                height: 28px;
                padding: 0 12px;
                font-size: 12px;
            }

            .btn-login {
                height: 32px;
                padding: 0 14px;
                font-size: 13px;
                white-space: nowrap;
            }

            .category-hero {
                padding: 48px 0;
            }

            .category-hero h1 {
                font-size: 26px;
            }

            .level-grid {
                flex-direction: column;
                align-items: center;
            }

            .level-card,
            .level-card.level-1,
            .level-card.level-2,
            .level-card.level-3,
            .level-card.level-4 {
                width: 100%;
                max-width: 360px;
                height: auto;
            }

            .level-card .level-tags {
                margin-top: 12px;
            }

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

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

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

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

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

            .section-head h2 {
                font-size: 22px;
            }

            .btn-primary {
                width: 100%;
            }

            .compare-wrap {
                margin: 0 -16px;
                width: calc(100% + 32px);
            }

            .hero-meta {
                flex-direction: column;
                gap: 8px;
            }

            .header-inner {
                gap: 8px;
            }

            .nav-tabs {
                max-width: calc(100vw - 150px);
            }

            .footer-bottom .container {
                flex-direction: column;
                gap: 4px;
            }
        }

        @media (hover: none) {
            .nav-tab:active,
            .btn-login:active,
            .btn-primary:active,
            .scene-link:active {
                opacity: 0.8;
            }
        }

        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

/* roulang page: article */
:root {
            --primary: #3B82F6;
            --primary-dark: #1E40AF;
            --primary-light: #EFF6FF;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-title: #0F172A;
            --text-body: #334155;
            --text-muted: #94A3B8;
            --border: #E2E8F0;
            --border-input: #CBD5E1;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --radius-pill: 999px;
            --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 8px 30px rgba(15, 23, 42, 0.10);
            --shadow-btn: 0 2px 6px rgba(59, 130, 246, 0.15);
            --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

        body.no-scroll {
            overflow: hidden;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

        input,
        textarea {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Header ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            height: 72px;
            transition: box-shadow 0.3s ease;
        }

        .header.scrolled {
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--text-title);
            line-height: 1.2;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            color: var(--primary);
            flex-shrink: 0;
        }

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

        .nav-tabs {
            display: flex;
            align-items: center;
            background: #F1F5F9;
            border-radius: 36px;
            padding: 4px;
            gap: 2px;
        }

        .nav-tab {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 34px;
            padding: 0 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: #475569;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .nav-tab:hover {
            color: var(--text-title);
            background: rgba(255, 255, 255, 0.8);
        }

        .nav-tab.active {
            background: var(--text-title);
            color: #FFFFFF;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 24px;
            background: var(--primary);
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all 0.2s ease;
            box-shadow: var(--shadow-btn);
        }

        .btn-login:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        .btn-login:active {
            transform: translateY(0);
        }

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

        .breadcrumb .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
        }

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

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

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

        .breadcrumb .current {
            color: var(--text-muted);
            max-width: 260px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ===== Article Page ===== */
        .article-page {
            padding: 44px 0 72px;
        }

        .article-wrap {
            max-width: 860px;
            margin: 0 auto;
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 48px 56px;
        }

        .article-header {
            margin-bottom: 32px;
        }

        .article-header h1 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-title);
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 13px;
            color: var(--text-muted);
            border-bottom: 1px solid var(--border);
            padding-bottom: 20px;
        }

        .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .meta-item svg {
            width: 15px;
            height: 15px;
            color: var(--text-muted);
            opacity: 0.7;
        }

        .meta-source {
            color: var(--primary);
            font-weight: 500;
        }

        /* ===== Article Body ===== */
        .article-body {
            max-width: 760px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
        }

        .article-body p {
            margin-bottom: 24px;
        }

        .article-body h2 {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-title);
            margin: 44px 0 16px;
            line-height: 1.35;
            letter-spacing: -0.01em;
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-title);
            margin: 36px 0 12px;
            line-height: 1.4;
        }

        .article-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-title);
            margin: 28px 0 10px;
        }

        .article-body img {
            max-width: 100%;
            border-radius: var(--radius-md);
            margin: 28px 0;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 28px 0;
            color: var(--text-body);
            font-style: normal;
        }

        .article-body blockquote p {
            margin-bottom: 0;
        }

        .article-body code {
            font-family: "SF Mono", "Cascadia Code", Consolas, "Courier New", monospace;
            background: #F1F5F9;
            padding: 2px 7px;
            border-radius: 4px;
            font-size: 14px;
            color: var(--primary-dark);
        }

        .article-body pre {
            background: #1E293B;
            color: #E2E8F0;
            padding: 22px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 28px 0;
            line-height: 1.6;
        }

        .article-body pre code {
            background: none;
            color: inherit;
            padding: 0;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 24px;
            padding-left: 26px;
        }

        .article-body ul li {
            list-style: disc;
            margin-bottom: 8px;
        }

        .article-body ol li {
            list-style: decimal;
            margin-bottom: 8px;
        }

        .article-body a {
            color: var(--primary);
            border-bottom: 1px solid rgba(59, 130, 246, 0.3);
        }

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

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 14px;
        }

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

        .article-body table th {
            background: #F8FAFC;
            font-weight: 600;
            color: var(--text-title);
        }

        /* ===== Article Tags ===== */
        .article-tags {
            max-width: 760px;
            margin: 36px auto 0;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 26px;
            border-top: 1px solid var(--border);
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            background: #F1F5F9;
            color: var(--text-body);
            font-size: 13px;
            border-radius: var(--radius-pill);
            transition: all 0.2s ease;
        }

        .tag-chip:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        /* ===== Article Actions ===== */
        .article-actions {
            max-width: 760px;
            margin: 32px auto 0;
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 24px;
            background: #FFFFFF;
            border: 1px solid var(--border-input);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: all 0.2s ease;
        }

        .btn-secondary:hover {
            background: #F1F5F9;
            color: var(--text-title);
            border-color: var(--text-muted);
        }

        .btn-secondary:active {
            transform: scale(0.98);
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 24px;
            background: var(--primary);
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-btn);
            transition: all 0.2s ease;
        }

        .btn-back-home:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        /* ===== Empty State ===== */
        .article-empty {
            max-width: 760px;
            margin: 60px auto;
            text-align: center;
            padding: 80px 40px;
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .article-empty .empty-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            border-radius: 50%;
            color: var(--primary);
        }

        .article-empty .empty-icon svg {
            width: 28px;
            height: 28px;
        }

        .article-empty p {
            font-size: 18px;
            color: var(--text-title);
            margin-bottom: 24px;
            font-weight: 500;
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 72px 0;
            background: var(--bg);
        }

        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 36px;
        }

        .section-header h2 {
            font-size: 24px;
            font-weight: 600;
            color: var(--text-title);
            position: relative;
            padding-left: 16px;
        }

        .section-header h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            border-radius: 4px;
            background: var(--primary);
        }

        .section-link {
            font-size: 14px;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.2s;
        }

        .section-link:hover {
            color: var(--primary-dark);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .related-card {
            display: flex;
            gap: 16px;
            background: #FFFFFF;
            border-radius: var(--radius-md);
            padding: 16px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }

        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--border);
        }

        .related-card-img {
            width: 140px;
            height: 96px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--primary-light);
        }

        .related-card-img.bg-placeholder {
            background-image: url('/assets/images/coverpic/cover-2.webp');
            background-size: cover;
            background-position: center;
        }

        .related-card-img.cover-3 {
            background-image: url('/assets/images/coverpic/cover-3.webp');
            background-size: cover;
            background-position: center;
        }

        .related-card-img.cover-4 {
            background-image: url('/assets/images/coverpic/cover-4.webp');
            background-size: cover;
            background-position: center;
        }

        .related-card-img.cover-5 {
            background-image: url('/assets/images/coverpic/cover-5.webp');
            background-size: cover;
            background-position: center;
        }

        .related-card-info {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .related-card-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.2s;
        }

        .related-card:hover .related-card-title {
            color: var(--primary);
        }

        .related-card-time {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: auto;
        }

        /* ===== CTA Band ===== */
        .cta-band-section {
            padding: 0 0 80px;
        }

        .cta-band {
            background: var(--primary-light);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-band::after {
            content: '';
            position: absolute;
            bottom: -60%;
            left: -15%;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-band h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }

        .cta-band p {
            color: var(--text-body);
            margin-bottom: 28px;
            font-size: 15px;
            position: relative;
            z-index: 1;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 36px;
            background: var(--primary);
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-btn);
            transition: all 0.2s ease;
            position: relative;
            z-index: 1;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(59, 130, 246, 0.25);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-accent {
            background: var(--accent);
            box-shadow: 0 2px 6px rgba(249, 115, 22, 0.2);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            color: #FFFFFF;
        }

        /* ===== Footer ===== */
        .footer {
            background: #1E293B;
            color: #CBD5E1;
            padding-top: 56px;
        }

        .footer .container {
            max-width: 1200px;
        }

        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px 40px;
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 48px;
        }

        .footer .logo {
            color: #F8FAFC;
            margin-bottom: 16px;
            font-size: 20px;
        }

        .footer .logo-icon {
            color: #60A5FA;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #94A3B8;
            max-width: 320px;
        }

        .footer-col h4 {
            color: #F8FAFC;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

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

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

        .footer-col a {
            color: #94A3B8;
            font-size: 14px;
            transition: color 0.2s;
        }

        .footer-col a:hover {
            color: #FFFFFF;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: #94A3B8;
        }

        .footer-contact svg {
            width: 15px;
            height: 15px;
            color: #60A5FA;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding: 18px 0;
        }

        .footer-bottom .container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 12px;
            color: #64748B;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1080px) {
            .nav-tab {
                padding: 0 14px;
                font-size: 13px;
            }

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

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

        @media (max-width: 768px) {
            .header {
                height: auto;
                min-height: 60px;
            }

            .header-inner {
                flex-wrap: wrap;
                padding-top: 10px;
                padding-bottom: 10px;
                gap: 8px;
            }

            .logo {
                font-size: 16px;
            }

            .logo-icon {
                width: 26px;
                height: 26px;
            }

            .nav-tabs {
                order: 3;
                width: 100%;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
                border-radius: 8px;
                padding: 3px;
                background: #F1F5F9;
            }

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

            .nav-tab {
                flex-shrink: 0;
                height: 30px;
                padding: 0 14px;
                font-size: 13px;
            }

            .btn-login {
                height: 34px;
                padding: 0 16px;
                font-size: 13px;
            }

            .article-wrap {
                padding: 32px 24px;
                border-radius: var(--radius-md);
            }

            .article-header h1 {
                font-size: 24px;
            }

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

            .article-body {
                font-size: 15px;
            }

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

            .cta-band h2 {
                font-size: 22px;
            }

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

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }

            .article-page {
                padding: 24px 0 56px;
            }

            .article-wrap {
                padding: 24px 16px;
            }

            .article-header h1 {
                font-size: 21px;
            }

            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .article-body h2 {
                font-size: 22px;
            }

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

            .related-card {
                flex-direction: column;
            }

            .related-card-img {
                width: 100%;
                height: 160px;
            }

            .cta-band {
                padding: 32px 20px;
            }

            .btn-primary {
                width: 100%;
            }

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

            .article-actions .btn-secondary,
            .article-actions .btn-back-home {
                width: 100%;
            }

            .footer-bottom .container {
                flex-direction: column;
                gap: 4px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #3B82F6;
            --primary-dark: #1E40AF;
            --primary-light: #EFF6FF;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --bg-body: #F8FAFC;
            --bg-card: #FFFFFF;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #94A3B8;
            --border: #E2E8F0;
            --border-input: #CBD5E1;
            --success: #10B981;
            --warning: #F59E0B;
            --error: #EF4444;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 8px 30px rgba(15, 23, 42, 0.10);
            --btn-shadow: 0 2px 6px rgba(59, 130, 246, 0.15);
            --container-width: 1200px;
            --space-section: 80px;
            --font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--space-section) 0;
        }
        .section-alt {
            background: var(--bg-card);
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-head h2 {
            font-size: 26px;
            font-weight: 600;
            line-height: 1.35;
            color: var(--text-heading);
            letter-spacing: .5px;
        }
        .section-head p {
            margin-top: 12px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 15px;
            padding: 10px 24px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .2s ease;
            line-height: 1.5;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(59, 130, 246, .35);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--btn-shadow);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(30, 64, 175, .25);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 4px rgba(30, 64, 175, .2);
        }
        .btn-secondary {
            background: #fff;
            color: var(--text-body);
            border-color: var(--border-input);
        }
        .btn-secondary:hover {
            background: #F1F5F9;
            color: var(--text-heading);
            border-color: var(--text-muted);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 2px 6px rgba(249, 115, 22, .2);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(234, 88, 12, .3);
        }
        .btn-lg {
            height: 48px;
            padding: 0 32px;
            font-size: 16px;
        }
        .btn-sm {
            height: 32px;
            padding: 0 14px;
            font-size: 13px;
        }

        /* ===== 导航 ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            border-bottom: 1px solid var(--border);
            transition: box-shadow .25s ease;
        }
        .header.scrolled {
            box-shadow: 0 2px 12px rgba(15, 23, 42, .06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            color: var(--text-heading);
        }
        .logo:hover {
            color: var(--text-heading);
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 10px;
            padding: 4px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.2;
            letter-spacing: .5px;
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-tabs {
            display: flex;
            gap: 4px;
            padding: 4px;
            background: #F1F5F9;
            border-radius: 999px;
            align-items: center;
            flex-shrink: 0;
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            padding: 7px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: #475569;
            transition: all .2s ease;
            white-space: nowrap;
            background: transparent;
        }
        .nav-tab:hover {
            color: var(--text-heading);
            background: rgba(255, 255, 255, .65);
        }
        .nav-tab.active {
            background: var(--text-heading);
            color: #fff;
            font-weight: 600;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn-login {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 36px;
            padding: 0 20px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            box-shadow: var(--btn-shadow);
            transition: all .2s ease;
        }
        .btn-login:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-login:active {
            transform: translateY(0);
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            background: linear-gradient(rgba(255, 255, 255, .88), rgba(255, 255, 255, .88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 72px 0 64px;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(59, 130, 246, .08) 0%, rgba(59, 130, 246, 0) 70%);
            top: -120px;
            right: -80px;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--border-input);
        }
        .breadcrumb .current {
            color: var(--text-body);
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 220px;
        }
        .page-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.3;
            letter-spacing: .5px;
            position: relative;
            padding-bottom: 14px;
        }
        .page-hero h1::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 56px;
            height: 4px;
            border-radius: 2px;
            background: var(--primary);
        }
        .hero-desc {
            margin-top: 24px;
            max-width: 680px;
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
        }
        .hero-actions {
            margin-top: 32px;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 数据条 ===== */
        .stats-bar {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            padding: 32px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .stat-item {
            text-align: center;
            padding: 8px 16px;
        }
        .stat-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            font-variant-numeric: tabular-nums;
            letter-spacing: .5px;
        }
        .stat-num span {
            color: var(--primary);
            font-size: 22px;
            margin-left: 2px;
        }
        .stat-label {
            margin-top: 4px;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all .25s ease;
            position: relative;
            box-shadow: var(--shadow-sm);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(59, 130, 246, .25);
        }
        .step-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1;
            font-variant-numeric: tabular-nums;
            letter-spacing: -1px;
            position: absolute;
            top: 24px;
            right: 24px;
        }
        .step-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        .step-icon svg {
            width: 24px;
            height: 24px;
        }
        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* ===== 登录方式 ===== */
        .methods-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .method-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all .25s ease;
            box-shadow: var(--shadow-sm);
        }
        .method-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(59, 130, 246, .2);
        }
        .method-cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
        }
        .method-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }
        .method-card:hover .method-cover img {
            transform: scale(1.03);
        }
        .method-body {
            padding: 24px;
        }
        .method-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .method-body p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .method-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .method-link:hover {
            color: var(--primary-dark);
        }

        /* ===== 安全提示 ===== */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .security-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all .25s ease;
            box-shadow: var(--shadow-sm);
        }
        .security-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(16, 185, 129, .3);
        }
        .security-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: #ECFDF5;
            color: var(--success);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }
        .security-icon svg {
            width: 22px;
            height: 22px;
        }
        .security-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .security-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            overflow: hidden;
            transition: border-color .2s ease, box-shadow .2s ease;
        }
        .faq-item[open] {
            border-color: var(--primary);
            box-shadow: 0 2px 10px rgba(59, 130, 246, .06);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            cursor: pointer;
            list-style: none;
            user-select: none;
        }
        .faq-question::-webkit-details-marker {
            display: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .chevron {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            color: var(--text-muted);
            transition: transform .25s ease, color .25s ease;
        }
        .faq-item[open] .chevron {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 20px 18px;
            font-size: 14px;
            color: #475569;
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 64px 0 80px;
        }
        .cta-box {
            position: relative;
            background: linear-gradient(rgba(255, 255, 255, .94), rgba(255, 255, 255, .94)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 56px 48px;
            text-align: center;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .cta-box::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--primary);
        }
        .cta-box h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.4;
        }
        .cta-box p {
            margin-top: 12px;
            font-size: 15px;
            color: var(--text-muted);
        }
        .cta-box .btn {
            margin-top: 28px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: #1E293B;
            color: #CBD5E1;
            padding-top: 56px;
            border-top: 1px solid #334155;
        }
        .footer-grid {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px 40px;
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
        }
        .footer-brand .logo {
            color: #fff;
        }
        .footer-brand .logo:hover {
            color: #fff;
        }
        .footer-brand .logo-icon {
            background: rgba(255, 255, 255, .1);
            color: #93C5FD;
        }
        .footer-brand .logo-text span {
            color: #93C5FD;
        }
        .footer-brand p {
            margin-top: 16px;
            font-size: 14px;
            line-height: 1.8;
            color: #94A3B8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            color: #CBD5E1;
            font-size: 14px;
            transition: color .2s ease;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: #CBD5E1;
        }
        .footer-contact svg {
            width: 16px;
            height: 16px;
            flex-shrink: 0;
            color: #93C5FD;
        }
        .footer-bottom {
            border-top: 1px solid #334155;
        }
        .footer-bottom .container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding-top: 20px;
            padding-bottom: 20px;
            font-size: 12px;
            color: #94A3B8;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1080px) {
            .container {
                padding: 0 20px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .methods-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .method-card:last-child {
                grid-column: 1 / -1;
                max-width: 560px;
            }
        }
        @media (max-width: 860px) {
            .header-inner {
                gap: 12px;
            }
            .nav-tabs {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                white-space: nowrap;
                border-radius: 999px;
                scrollbar-width: none;
                -ms-overflow-style: none;
            }
            .nav-tabs::-webkit-scrollbar {
                display: none;
            }
            .header-inner {
                flex-wrap: wrap;
                height: auto;
                padding-top: 12px;
                padding-bottom: 12px;
                gap: 10px;
            }
            .header-actions {
                margin-left: auto;
            }
        }
        @media (max-width: 768px) {
            :root {
                --space-section: 56px;
            }
            .logo-text {
                font-size: 16px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
            }
            .btn-login {
                height: 32px;
                padding: 0 14px;
                font-size: 13px;
            }
            .page-hero {
                padding: 48px 0 40px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stat-num {
                font-size: 24px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .methods-grid {
                grid-template-columns: 1fr;
            }
            .method-card:last-child {
                grid-column: auto;
                max-width: none;
            }
            .security-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px 16px;
            }
            .faq-answer {
                font-size: 14px;
                padding: 0 16px 16px;
            }
            .cta-box {
                padding: 40px 20px;
            }
            .cta-box h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 32px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .security-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                gap: 12px;
            }
            .stat-num {
                font-size: 20px;
            }
            .btn-lg {
                height: 46px;
                padding: 0 20px;
            }
            .footer-bottom .container {
                flex-direction: column;
                gap: 4px;
            }
        }