/* roulang page: index */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #3b82f6;
            --accent: #0ea5e9;
            --bg: #f8fafc;
            --card: #ffffff;
            --text: #0f172a;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --success: #10b981;
            --warning: #f59e0b;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.65;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            gap: 32px;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 19px;
            color: var(--text);
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: 8px;
        }

        .main-nav a {
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            transition: all 0.25s ease;
        }

        .main-nav a:hover {
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
        }

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

        .header-tools {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: auto;
        }

        .search-box {
            position: relative;
        }

        .search-box input {
            width: 200px;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 0 16px 0 38px;
            font-size: 14px;
            background: #fff;
            outline: none;
            transition: all 0.3s ease;
        }

        .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
            width: 260px;
        }

        .search-box i {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
            pointer-events: none;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 10px 22px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.28);
        }

        .btn-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(37, 99, 235, 0.36);
        }

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

        .menu-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 10px;
            cursor: pointer;
            color: var(--text);
            font-size: 18px;
        }

        .mobile-nav {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 16px 24px;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-nav a {
            padding: 12px 16px;
            border-radius: 10px;
            font-weight: 600;
            color: var(--text);
            transition: background 0.2s;
        }

        .mobile-nav a:hover {
            background: rgba(37, 99, 235, 0.08);
        }

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

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

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center center/cover no-repeat;
            isolation: isolate;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(15, 23, 42, 0.86) 0%, rgba(15, 23, 42, 0.65) 50%, rgba(15, 23, 42, 0.3) 100%);
            z-index: -1;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            padding: 80px 24px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            backdrop-filter: blur(8px);
            color: #e2e8f0;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hero h1 {
            font-size: clamp(30px, 4.2vw, 44px);
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .hero h1 span {
            color: #93c5fd;
        }

        .hero-desc {
            font-size: 16px;
            line-height: 1.7;
            color: rgba(226, 232, 240, 0.88);
            max-width: 560px;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .btn-primary-hero {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary-dark);
            padding: 14px 30px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 15px;
            border: none;
            cursor: pointer;
            box-shadow: 0 8px 30px rgba(255, 255, 255, 0.15);
            transition: all 0.3s ease;
        }

        .btn-primary-hero:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(255, 255, 255, 0.24);
        }

        .btn-secondary-hero {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 13px 28px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 15px;
            border: 1px solid rgba(255, 255, 255, 0.4);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-secondary-hero:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

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

        .hero-meta-item {
            color: rgba(226, 232, 240, 0.9);
            font-size: 14px;
        }

        .hero-meta-item strong {
            color: #fff;
            font-size: 20px;
            display: block;
            line-height: 1.2;
        }

        /* Group card */
        .group-card {
            background: rgba(255, 255, 255, 0.97);
            border-radius: 20px;
            padding: 24px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
            backdrop-filter: blur(8px);
        }

        .group-card-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }

        .group-card-header h3 {
            font-size: 17px;
            font-weight: 800;
            color: var(--text);
        }

        .group-card-header .live-dot {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 700;
            color: #dc2626;
            background: #fef2f2;
            padding: 4px 12px;
            border-radius: 999px;
        }

        .group-card-header .live-dot::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #dc2626;
            animation: pulse-dot 1.5s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(0.8);
            }
        }

        .group-item {
            padding: 14px 0;
            border-bottom: 1px solid #f1f5f9;
        }

        .group-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .group-item-top {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 8px;
        }

        .group-avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .group-item-top .g-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }

        .group-item-top .g-meta {
            font-size: 12px;
            color: var(--text-muted);
        }

        .group-item-bottom {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 6px;
        }

        .group-progress {
            flex: 1;
            height: 6px;
            background: #e2e8f0;
            border-radius: 999px;
            overflow: hidden;
        }

        .group-progress-bar {
            height: 100%;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .group-item-bottom .count {
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }

        .group-join-btn {
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background: var(--primary);
            border: none;
            border-radius: 999px;
            padding: 5px 14px;
            cursor: pointer;
            transition: all 0.2s;
        }

        .group-join-btn:hover {
            background: var(--primary-dark);
        }

        .group-card-footer {
            margin-top: 16px;
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
        }

        .group-card-footer strong {
            color: var(--primary);
        }

        /* ===== Sections ===== */
        .section {
            padding: 72px 0;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }

        .section-head .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background: rgba(37, 99, 235, 0.08);
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: -0.4px;
        }

        .section-head p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Metrics */
        .metrics-section {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

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

        .metric-item {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--radius);
            transition: transform 0.3s, box-shadow 0.3s;
        }

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

        .metric-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(37, 99, 235, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin: 0 auto 12px;
        }

        .metric-value {
            font-size: 34px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.1;
            letter-spacing: -0.5px;
        }

        .metric-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 5px;
        }

        /* Spotlight Track */
        .spotlight-section {
            background: var(--bg);
        }

        .track-wrap {
            position: relative;
        }

        .track {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding: 8px 4px 24px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .track::-webkit-scrollbar {
            height: 6px;
        }

        .track::-webkit-scrollbar-track {
            background: #e2e8f0;
            border-radius: 4px;
        }

        .track::-webkit-scrollbar-thumb {
            background: var(--primary-light);
            border-radius: 4px;
        }

        .spot-card {
            min-width: 300px;
            scroll-snap-align: start;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
            box-shadow: var(--shadow);
        }

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

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

        .spot-card-cover .rating-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(15, 23, 42, 0.8);
            backdrop-filter: blur(4px);
            color: #fbbf24;
            font-size: 13px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 999px;
        }

        .spot-card-body {
            padding: 20px;
        }

        .spot-card-body h3 {
            font-size: 18px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 6px;
        }

        .spot-card-body .loc {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 8px;
        }

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

        .card-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-top: 12px;
        }

        .tag {
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
        }

        .tag-green {
            background: rgba(16, 185, 129, 0.1);
            color: #059669;
        }

        .tag-amber {
            background: rgba(245, 158, 11, 0.12);
            color: #d97706;
        }

        /* Hot ranking */
        .hot-section {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .hot-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 24px;
        }

        .hot-main-card {
            background: linear-gradient(135deg, #1e293b, #0f172a);
            border-radius: 20px;
            padding: 32px;
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
        }

        .hot-main-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/coverpic/cover-1.webp') center center/cover no-repeat;
            opacity: 0.35;
        }

        .hot-main-card>* {
            position: relative;
            z-index: 1;
            color: #fff;
        }

        .hot-main-card .rank {
            font-size: 13px;
            font-weight: 700;
            color: #fbbf24;
            background: rgba(0, 0, 0, 0.4);
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            width: fit-content;
        }

        .hot-main-card h3 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .hot-main-card p {
            font-size: 14px;
            opacity: 0.85;
            margin-bottom: 20px;
            max-width: 400px;
        }

        .hot-main-card .btn-hot {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: #0f172a;
            padding: 10px 24px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 14px;
            transition: all 0.3s;
            width: fit-content;
        }

        .hot-main-card .btn-hot:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
        }

        .hot-side-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .hot-side-item {
            display: flex;
            gap: 16px;
            background: var(--bg);
            border-radius: 14px;
            padding: 16px;
            border: 1px solid var(--border);
            transition: all 0.3s;
        }

        .hot-side-item:hover {
            background: #fff;
            box-shadow: var(--shadow);
            transform: translateX(-3px);
        }

        .hot-side-rank {
            font-size: 24px;
            font-weight: 800;
            color: #cbd5e1;
            min-width: 36px;
            text-align: center;
            line-height: 1.4;
        }

        .hot-side-rank.top3 {
            color: var(--primary);
        }

        .hot-side-info h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }

        .hot-side-info .meta {
            font-size: 13px;
            color: var(--text-muted);
        }

        .hot-side-info .trend {
            font-size: 12px;
            color: var(--success);
            font-weight: 600;
        }

        /* Categories */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .category-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 28px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .category-card::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 80px;
            height: 80px;
            border-radius: 0 0 0 100%;
            background: rgba(37, 99, 235, 0.04);
            transition: all 0.4s;
        }

        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .category-card:hover::after {
            background: rgba(37, 99, 235, 0.1);
            width: 120px;
            height: 120px;
        }

        .category-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(14, 165, 233, 0.08));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .category-card h3 {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 8px;
        }

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

        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
        }

        .category-card .cat-link:hover {
            gap: 10px;
        }

        /* Compare */
        .compare-section {
            background: #fff;
            border-top: 1px solid var(--border);
        }

        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            max-width: 960px;
            margin: 0 auto;
        }

        .compare-col {
            border-radius: var(--radius);
            padding: 32px;
            border: 1px solid var(--border);
        }

        .compare-col.old {
            background: #f8fafc;
        }

        .compare-col.new {
            background: rgba(37, 99, 235, 0.04);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .compare-col h3 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .compare-col ul li {
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            gap: 10px;
            align-items: flex-start;
            line-height: 1.6;
        }

        .compare-col ul li i {
            margin-top: 4px;
        }

        .compare-col.old ul li i {
            color: #94a3b8;
        }

        .compare-col.new ul li i {
            color: var(--primary);
        }

        /* News */
        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
        }

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

        .news-item {
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            transition: padding 0.3s;
        }

        .news-item:first-child {
            padding-top: 0;
        }

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

        .news-item a {
            display: block;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            transition: color 0.2s;
            line-height: 1.5;
        }

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

        .news-item .news-meta {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
            display: flex;
            gap: 16px;
        }

        .news-side {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .news-side-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 24px;
        }

        .news-side-card h4 {
            font-size: 16px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .hot-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .hot-tags a {
            font-size: 13px;
            background: var(--bg);
            border: 1px solid var(--border);
            padding: 4px 12px;
            border-radius: 999px;
            color: var(--text-muted);
            transition: all 0.2s;
        }

        .hot-tags a:hover {
            background: rgba(37, 99, 235, 0.08);
            border-color: var(--primary);
            color: var(--primary);
        }

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

        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow 0.3s;
        }

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

        .faq-item.open {
            border-color: rgba(37, 99, 235, 0.3);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 700;
            font-size: 15px;
            color: var(--text);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color 0.2s;
        }

        .faq-question i {
            transition: transform 0.3s;
            color: var(--text-muted);
            font-size: 14px;
            flex-shrink: 0;
            margin-left: 16px;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* CTA */
        .cta-section {
            padding: 80px 0;
            background: url('/assets/images/backpic/back-2.webp') center center/cover no-repeat;
            position: relative;
            isolation: isolate;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.92), rgba(14, 165, 233, 0.88));
            z-index: -1;
        }

        .cta-inner {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            color: #fff;
        }

        .cta-inner h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-inner p {
            font-size: 16px;
            opacity: 0.9;
            margin-bottom: 32px;
            line-height: 1.7;
        }

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

        .btn-white {
            background: #fff;
            color: var(--primary-dark);
            padding: 14px 32px;
            border-radius: 999px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            padding: 13px 30px;
            border-radius: 999px;
            font-weight: 700;
            border: 1px solid rgba(255, 255, 255, 0.6);
            cursor: pointer;
            transition: all 0.3s;
        }

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

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 56px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }

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

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 360px;
        }

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

        .footer-col a {
            display: block;
            font-size: 14px;
            padding: 5px 0;
            color: #94a3b8;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.15);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom a {
            color: #64748b;
        }

        /* Float CTA */
        .float-bar {
            position: fixed;
            bottom: 24px;
            right: 24px;
            z-index: 90;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
            cursor: pointer;
            transition: all 0.3s;
            border: none;
        }

        .float-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(37, 99, 235, 0.45);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hot-grid {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                gap: 12px;
                height: 64px;
            }
            .main-nav {
                display: none;
            }
            .search-box {
                display: none;
            }
            .btn-cta {
                display: none;
            }
            .menu-toggle {
                display: flex;
                margin-left: auto;
            }
            .mobile-nav {
                display: none;
            }
            .mobile-nav.open {
                display: flex;
            }
            .hero {
                min-height: auto;
            }
            .hero-inner {
                padding: 48px 20px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 48px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .category-card {
                padding: 20px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary-hero,
            .btn-secondary-hero {
                justify-content: center;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .cta-inner h2 {
                font-size: 24px;
            }
            .spot-card {
                min-width: 260px;
            }
            .hot-main-card {
                padding: 24px;
            }
            .hot-main-card h3 {
                font-size: 20px;
            }
            .group-card {
                padding: 18px;
            }
            .float-bar {
                right: 14px;
                bottom: 14px;
            }
            .float-btn {
                width: 44px;
                height: 44px;
                font-size: 17px;
            }
        }

/* roulang page: category1 */
:root { --primary-600:#2563eb; --primary-700:#1d4ed8; --accent-600:#0d9488; --ink:#1e293b; --text-light:#64748b; --bg:#f8fafc; --card:#ffffff; --border:#e2e8f0; --radius:1rem; --shadow-sm:0 2px 10px rgba(15,23,42,.05); --shadow:0 12px 32px rgba(15,23,42,.08); --shadow-lg:0 28px 60px rgba(15,23,42,.12); }
  * { box-sizing:border-box; margin:0; padding:0; }
  html { -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
  body { font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif; background:var(--bg); color:var(--ink); line-height:1.7; }
  img { max-width:100%; display:block; }
  a { text-decoration:none; color:inherit; transition:color .2s; }
  button { cursor:pointer; border:none; background:none; font-family:inherit; }
  input,select,button { font-family:inherit; font-size:14px; }
  .container { max-width:1200px; margin:0 auto; padding:0 24px; }
  .btn { display:inline-flex; align-items:center; justify-content:center; gap:8px; padding:12px 26px; border-radius:12px; font-weight:600; font-size:15px; line-height:1.4; transition:all .25s ease; white-space:nowrap; }
  .btn-primary { background:var(--primary-600); color:#fff; box-shadow:0 4px 14px rgba(37,99,235,.25); }
  .btn-primary:hover { background:var(--primary-700); transform:translateY(-2px); box-shadow:0 8px 24px rgba(37,99,235,.3); }
  .btn-primary:active { transform:translateY(0); box-shadow:0 2px 8px rgba(37,99,235,.2); }
  .btn-outline { border:2px solid #e2e8f0; background:#fff; color:var(--ink); }
  .btn-outline:hover { border-color:var(--primary-600); color:var(--primary-600); background:#f8fafc; }
  .btn-block { width:100%; }
  .btn-sm { padding:9px 18px; font-size:14px; }
  /* Header */
  .site-header { position:sticky; top:0; z-index:50; background:rgba(255,255,255,.92); backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px); border-bottom:1px solid var(--border); }
  .header-inner { display:flex; align-items:center; justify-content:space-between; height:72px; gap:24px; }
  .logo { display:flex; align-items:center; gap:10px; font-size:18px; font-weight:800; color:var(--ink); white-space:nowrap; }
  .logo-icon { width:38px; height:38px; border-radius:11px; background:linear-gradient(135deg,#2563eb,#14b8a6); display:flex; align-items:center; justify-content:center; color:#fff; font-size:17px; box-shadow:0 4px 12px rgba(37,99,235,.3); }
  .main-nav { display:flex; align-items:center; gap:6px; }
  .main-nav a { position:relative; padding:10px 18px; border-radius:10px; font-weight:600; font-size:15px; color:var(--text-light); transition:all .2s; }
  .main-nav a:hover { color:var(--ink); background:#f1f5f9; }
  .main-nav a.active { color:var(--primary-600); background:#eff6ff; }
  .main-nav a.active::after { content:''; position:absolute; left:18px; right:18px; bottom:4px; height:2px; border-radius:2px; background:var(--primary-600); }
  .header-actions { display:flex; align-items:center; gap:12px; }
  .search-box { display:flex; align-items:center; gap:8px; background:#f1f5f9; border:1px solid transparent; border-radius:12px; padding:9px 16px; width:260px; transition:all .2s; }
  .search-box:focus-within { background:#fff; border-color:var(--primary-500); box-shadow:0 0 0 3px rgba(37,99,235,.12); }
  .search-box i { color:var(--text-light); font-size:13px; }
  .search-box input { border:none; background:transparent; outline:none; width:100%; font-size:14px; color:var(--ink); }
  .mobile-toggle { display:none; width:40px; height:40px; border-radius:10px; align-items:center; justify-content:center; font-size:18px; color:var(--ink); background:#f1f5f9; }
  /* Hero */
  .hero { position:relative; background:linear-gradient(135deg,#f0f7ff 0%,#f8fafc 60%,#ecfdf5 100%); overflow:hidden; }
  .hero::before { content:''; position:absolute; inset:0; background-image:url('/assets/images/backpic/back-1.webp'); background-size:cover; background-position:center; opacity:.08; pointer-events:none; }
  .hero .container { position:relative; }
  .hero-grid { display:grid; grid-template-columns:1.15fr .85fr; gap:60px; padding:90px 0 80px; align-items:center; }
  .hero-badge { display:inline-flex; align-items:center; gap:8px; padding:8px 18px; border-radius:100px; background:#eff6ff; color:var(--primary-700); font-size:13px; font-weight:700; border:1px solid #dbeafe; }
  .hero h1 { font-size:44px; line-height:1.22; font-weight:800; color:var(--ink); margin:22px 0 18px; letter-spacing:-.5px; }
  .hero h1 .highlight { color:var(--primary-600); position:relative; }
  .hero-sub { font-size:17px; color:var(--text-light); max-width:520px; line-height:1.8; margin-bottom:32px; }
  .hero-stats { display:flex; gap:32px; }
  .hero-stats strong { display:block; font-size:26px; font-weight:800; color:var(--ink); line-height:1.2; }
  .hero-stats span { font-size:13px; color:var(--text-light); }
  .hero-form-card { background:#fff; border-radius:20px; padding:34px; box-shadow:var(--shadow-lg); border:1px solid rgba(226,232,240,.7); }
  .hero-form-card h3 { font-size:22px; font-weight:800; margin-bottom:6px; }
  .hero-form-card p { font-size:14px; color:var(--text-light); margin-bottom:20px; }
  .form-group { margin-bottom:14px; }
  .form-group label { display:block; font-size:13px; font-weight:600; color:var(--ink); margin-bottom:6px; }
  .form-group select, .form-group input { width:100%; padding:12px 14px; border:2px solid #e2e8f0; border-radius:11px; font-size:14px; color:var(--ink); background:#f8fafc; transition:all .2s; outline:none; }
  .form-group select:focus, .form-group input:focus { border-color:var(--primary-500); background:#fff; box-shadow:0 0 0 3px rgba(37,99,235,.12); }
  .form-note { font-size:12px; color:var(--text-light); text-align:center; margin-top:12px; display:flex; align-items:center; justify-content:center; gap:6px; }
  /* Stats */
  .stats-section { background:#fff; border-bottom:1px solid var(--border); }
  .stats-grid { display:grid; grid-template-columns:repeat(4,1fr); padding:48px 0; text-align:center; }
  .stat-num { font-size:38px; font-weight:800; color:var(--primary-600); line-height:1.2; }
  .stat-label { font-size:14px; color:var(--text-light); margin-top:4px; }
  /* Section */
  .section-block { padding:90px 0; }
  .section-tag { display:inline-flex; align-items:center; gap:6px; font-size:13px; font-weight:700; color:var(--primary-600); background:#eff6ff; padding:6px 16px; border-radius:100px; margin-bottom:14px; }
  .section-head h2 { font-size:34px; font-weight:800; line-height:1.3; margin-bottom:12px; letter-spacing:-.3px; }
  .section-head .lead { font-size:16px; color:var(--text-light); max-width:640px; }
  /* Rankings */
  .rank-grid { display:grid; grid-template-columns:2fr 1fr; gap:24px; margin-top:48px; }
  .rank-card { background:#fff; border-radius:18px; overflow:hidden; box-shadow:var(--shadow); border:1px solid rgba(226,232,240,.7); transition:all .3s; }
  .rank-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-lg); }
  .rank-img { position:relative; aspect-ratio:16/10; overflow:hidden; }
  .rank-img img { width:100%; height:100%; object-fit:cover; transition:transform .5s; }
  .rank-card:hover .rank-img img { transform:scale(1.05); }
  .rank-badge { position:absolute; top:16px; left:16px; padding:6px 14px; border-radius:100px; font-size:13px; font-weight:700; color:#fff; background:linear-gradient(135deg,#f59e0b,#d97706); box-shadow:0 4px 12px rgba(217,119,6,.35); z-index:2; }
  .rank-score { position:absolute; bottom:14px; right:14px; background:rgba(15,23,42,.75); backdrop-filter:blur(6px); color:#fff; padding:5px 12px; border-radius:100px; font-size:14px; font-weight:700; display:flex; align-items:center; gap:5px; }
  .rank-score i { color:#fbbf24; font-size:12px; }
  .rank-body { padding:24px; }
  .rank-body h3 { font-size:20px; font-weight:800; margin-bottom:10px; }
  .rank-tags { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:14px; }
  .rank-tags span { padding:4px 12px; border-radius:100px; background:#f1f5f9; font-size:12px; font-weight:600; color:var(--soft); }
  .rank-body p { font-size:14px; color:var(--text-light); line-height:1.7; margin-bottom:16px; }
  .rank-meta { display:flex; justify-content:space-between; font-size:13px; color:var(--text-light); margin-bottom:16px; padding-top:14px; border-top:1px solid #f1f5f9; }
  .rank-meta i { color:var(--primary-500); margin-right:4px; }
  .rank-list { display:flex; flex-direction:column; gap:24px; }
  /* Testimonials */
  .testi-section { background:#fff; }
  .testi-grid { display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
  .testi-image { border-radius:20px; overflow:hidden; box-shadow:var(--shadow-lg); position:relative; }
  .testi-image::after { content:''; position:absolute; inset:0; background:linear-gradient(to top, rgba(15,23,42,.2), transparent); }
  .testi-image img { width:100%; height:100%; object-fit:cover; aspect-ratio:4/5; }
  .testi-list .testi-item { position:relative; padding:24px 24px 24px 30px; background:#f8fafc; border-radius:16px; margin-bottom:18px; border-left:4px solid var(--primary-600); }
  .testi-stars { color:#f59e0b; font-size:14px; margin-bottom:10px; letter-spacing:2px; }
  .testi-item p { font-size:15px; line-height:1.8; color:var(--soft); margin-bottom:10px; }
  .testi-name { font-size:13px; color:var(--text-light); font-weight:600; }
  /* Process */
  .process-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; margin-top:48px; }
  .process-step { position:relative; background:#fff; border-radius:18px; padding:30px 24px; box-shadow:var(--shadow-sm); border:1px solid var(--border); transition:all .3s; }
  .process-step:hover { transform:translateY(-4px); box-shadow:var(--shadow); }
  .step-num { font-size:40px; font-weight:800; color:#e2e8f0; line-height:1; margin-bottom:16px; font-family:'Georgia',serif; }
  .process-step h3 { font-size:18px; font-weight:800; margin-bottom:10px; }
  .process-step p { font-size:14px; color:var(--text-light); line-height:1.7; }
  .process-step::after { content:''; position:absolute; top:40px; right:-16px; width:16px; height:2px; background:var(--primary-200); }
  .process-step:last-child::after { display:none; }
  /* FAQ */
  .faq-wrap { display:grid; grid-template-columns:.8fr 1.2fr; gap:56px; align-items:start; }
  .faq-list { display:flex; flex-direction:column; gap:12px; }
  .faq-item { background:#fff; border:1px solid var(--border); border-radius:16px; overflow:hidden; transition:box-shadow .2s; }
  .faq-item.active { box-shadow:var(--shadow); border-color:#bfdbfe; }
  .faq-question { width:100%; display:flex; align-items:center; justify-content:space-between; padding:20px 24px; font-size:16px; font-weight:700; color:var(--ink); text-align:left; transition:color .2s; }
  .faq-question:hover { color:var(--primary-600); }
  .faq-question i { font-size:14px; color:var(--text-light); transition:transform .3s; }
  .faq-item.active .faq-question i { transform:rotate(180deg); color:var(--primary-600); }
  .faq-answer { max-height:0; padding:0 24px; overflow:hidden; transition:max-height .35s ease; }
  .faq-answer-inner { padding-bottom:22px; font-size:15px; color:var(--text-light); line-height:1.8; }
  .faq-item.active .faq-answer { max-height:400px; }
  /* CTA */
  .cta-section { position:relative; overflow:hidden; background:linear-gradient(135deg,#1e293b,#0f172a); }
  .cta-section::before { content:''; position:absolute; inset:0; background-image:url('/assets/images/backpic/back-2.webp'); background-size:cover; background-position:center; opacity:.15; pointer-events:none; }
  .cta-card { position:relative; display:grid; grid-template-columns:1fr 1fr; gap:48px; background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.12); border-radius:24px; padding:52px; backdrop-filter:blur(8px); }
  .cta-content h2 { font-size:30px; font-weight:800; color:#fff; margin-bottom:16px; line-height:1.4; }
  .cta-content p { color:rgba(255,255,255,.75); font-size:16px; line-height:1.8; }
  .cta-content .cta-points { list-style:none; margin-top:24px; display:flex; flex-direction:column; gap:12px; }
  .cta-points li { display:flex; align-items:center; gap:10px; color:rgba(255,255,255,.9); font-size:15px; }
  .cta-points i { color:#34d399; font-size:15px; }
  .cta-form { background:#fff; border-radius:18px; padding:28px; box-shadow:var(--shadow-lg); }
  /* Footer */
  .site-footer { background:#fff; border-top:1px solid var(--border); }
  .footer-grid { display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:48px; padding:60px 0 40px; }
  .footer-brand p { font-size:14px; color:var(--text-light); line-height:1.8; margin-top:16px; max-width:420px; }
  .footer-col h4 { font-size:16px; font-weight:700; margin-bottom:18px; }
  .footer-col a { display:block; padding:6px 0; font-size:14px; color:var(--text-light); transition:color .2s, padding-left .2s; }
  .footer-col a:hover { color:var(--primary-600); padding-left:6px; }
  .footer-bottom { display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; padding:20px 0; border-top:1px solid var(--border); font-size:13px; color:var(--text-light); }
  .footer-bottom a { color:var(--primary-600); }
  /* Responsive */
  @media (max-width:1024px) {
    .hero-grid { grid-template-columns:1fr; gap:40px; }
    .search-box { width:200px; }
    .rank-grid { grid-template-columns:1fr; }
    .testi-grid { grid-template-columns:1fr; }
  }
  @media (max-width:768px) {
    .site-header { height:auto; }
    .header-inner { flex-wrap:wrap; height:auto; padding:12px 0; }
    .main-nav { order:3; width:100%; background:#fff; border-radius:12px; padding:8px; box-shadow:var(--shadow); display:none; }
    .main-nav.open { display:flex; flex-direction:column; align-items:stretch; }
    .main-nav a { text-align:center; }
    .main-nav a.active::after { display:none; }
    .header-actions { margin-left:auto; }
    .search-box { display:none; }
    .mobile-toggle { display:flex; }
    .hero h1 { font-size:34px; }
    .hero-grid { padding:60px 0; }
    .stats-grid { grid-template-columns:2fr 2fr; gap:24px; }
    .process-grid { grid-template-columns:1fr 1fr; }
    .process-step::after { display:none; }
    .faq-wrap { grid-template-columns:1fr; }
    .cta-card { grid-template-columns:1fr; padding:32px; }
    .footer-grid { grid-template-columns:1fr; gap:32px; }
    .footer-bottom { flex-direction:column; text-align:center; }
  }
  @media (max-width:520px) {
    .container { padding:0 16px; }
    .hero h1 { font-size:28px; }
    .hero-stats { gap:20px; }
    .hero-stats strong { font-size:20px; }
    .section-block { padding:60px 0; }
    .section-head h2 { font-size:26px; }
    .process-grid { grid-template-columns:1fr; }
    .stats-grid { grid-template-columns:1fr 1fr; }
    .hero-form-card { padding:24px; }
    .rank-body { padding:18px; }
    .cta-card { padding:24px; }
    .btn { width:100%; }
    .header-actions .btn-primary { display:none; }
  }