/* roulang page: index */
:root {
            --bg-base: #070B14;
            --bg-surface: #0A1228;
            --cyan: #38BDF8;
            --purple: #818CF8;
            --highlight: #22D3EE;
            --text-main: #F4F7FF;
            --text-sub: #B8C4DE;
            --text-mute: #7E8CA8;
            --border-glass: rgba(82, 139, 255, 0.18);
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-bg-hover: rgba(255, 255, 255, 0.12);
            --radius-card: 18px;
            --shadow-card: 0 12px 28px rgba(0, 0, 0, 0.40);
            --glow-cyan: 0 0 16px rgba(56, 189, 248, 0.55);
            --glow-cyan-strong: 0 0 28px rgba(56, 189, 248, 0.75);
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.7;
            font-weight: 400;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, opacity 0.2s ease;
        }

        a:hover {
            color: var(--cyan);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--highlight);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 11, 20, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 68px;
        }

        .nav-group {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }

        .nav-group.nav-left {
            justify-content: flex-start;
        }

        .nav-group.nav-right {
            justify-content: flex-end;
        }

        .logo-center {
            flex-shrink: 0;
            padding: 0 8px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo-link:hover {
            color: var(--cyan);
        }

        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--highlight);
            box-shadow: var(--glow-cyan);
            display: inline-block;
            flex-shrink: 0;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 13px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 10px;
            letter-spacing: 0.3px;
            white-space: nowrap;
            transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
        }

        .nav-link:hover {
            color: var(--text-main);
            background: rgba(56, 189, 248, 0.08);
            transform: translateY(-1px);
        }

        .nav-link.active {
            color: var(--highlight);
            background: rgba(56, 189, 248, 0.10);
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            color: var(--text-main);
            font-size: 1.4rem;
            transition: background 0.2s ease;
        }

        .menu-toggle:hover {
            background: var(--card-bg-hover);
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 24px 20px;
            background: rgba(7, 11, 20, 0.95);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
        }

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

        .mobile-nav .nav-link {
            padding: 12px 14px;
            font-size: 1rem;
            width: 100%;
        }

        /* Hero */
        .hero {
            position: relative;
            padding: 88px 0 76px;
            background: linear-gradient(135deg, #070B14 0%, #0A1228 45%, #0D1B3A 70%, #070B14 100%);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(56, 189, 248, 0.16), transparent 55%),
                radial-gradient(ellipse at 80% 70%, rgba(129, 140, 248, 0.14), transparent 50%),
                radial-gradient(ellipse at 50% 50%, rgba(34, 211, 238, 0.06), transparent 60%);
            pointer-events: none;
        }

        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 44px;
            align-items: center;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: 999px;
            border: 1px solid rgba(56, 189, 248, 0.30);
            background: rgba(56, 189, 248, 0.08);
            font-size: 0.85rem;
            color: var(--highlight);
            letter-spacing: 0.6px;
            margin-bottom: 22px;
        }

        .eyebrow-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--highlight);
            box-shadow: var(--glow-cyan);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.4);
            }
        }

        .hero h1 {
            font-size: clamp(2.1rem, 4.5vw, 3.4rem);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
            color: var(--text-main);
        }

        .hero h1 .gradient-text {
            background: linear-gradient(120deg, var(--highlight), var(--cyan), var(--purple));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: inline;
        }

        .hero-subtitle {
            font-size: 1.08rem;
            color: var(--text-sub);
            line-height: 1.85;
            margin-bottom: 30px;
            max-width: 540px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 0.98rem;
            letter-spacing: 0.3px;
            transition: transform 0.2s ease, box-shadow 0.25s ease, background 0.2s ease, border-color 0.2s ease;
            white-space: nowrap;
            text-align: center;
        }

        .btn-primary {
            background: linear-gradient(120deg, #38BDF8, #818CF8);
            color: #070B14;
            box-shadow: var(--glow-cyan);
            border: 1px solid rgba(56, 189, 248, 0.5);
        }

        .btn-primary:hover {
            box-shadow: var(--glow-cyan-strong);
            transform: translateY(-2px);
            background: linear-gradient(120deg, #4CC9F8, #92A0F8);
            color: #070B14;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--glow-cyan);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-main);
            border: 1px solid rgba(82, 139, 255, 0.28);
            backdrop-filter: blur(8px);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(56, 189, 248, 0.5);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
        }

        .hero-stats-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 20px 18px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }

        .stat-card:hover {
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.45);
            background: rgba(255, 255, 255, 0.09);
        }

        .stat-number {
            font-family: 'ui-monospace', 'SF Mono', 'Consolas', monospace;
            font-size: 2.1rem;
            font-weight: 700;
            color: var(--highlight);
            text-shadow: 0 0 18px rgba(34, 211, 238, 0.55);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 0.86rem;
            color: var(--text-mute);
            letter-spacing: 0.4px;
        }

        /* Section Base */
        .section {
            padding: 88px 0;
            position: relative;
        }

        .section-alt {
            background: var(--bg-surface);
            border-top: 1px solid rgba(82, 139, 255, 0.08);
            border-bottom: 1px solid rgba(82, 139, 255, 0.08);
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 1.2px;
            text-transform: uppercase;
            color: var(--highlight);
            margin-bottom: 14px;
        }

        .section-tag::before {
            content: '';
            width: 18px;
            height: 2px;
            background: linear-gradient(90deg, var(--highlight), transparent);
            border-radius: 2px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 720px;
            margin-bottom: 40px;
        }

        /* Search/Filter Bar */
        .filter-bar {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            backdrop-filter: blur(14px);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            box-shadow: var(--shadow-card);
        }

        .filter-input {
            flex: 1;
            min-width: 220px;
            background: rgba(7, 11, 20, 0.7);
            border: 1px solid rgba(82, 139, 255, 0.22);
            border-radius: 10px;
            padding: 11px 16px;
            color: var(--text-main);
            font-size: 0.95rem;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .filter-input::placeholder {
            color: var(--text-mute);
        }

        .filter-input:focus {
            outline: none;
            border-color: var(--highlight);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
        }

        .filter-select {
            background: rgba(7, 11, 20, 0.7);
            border: 1px solid rgba(82, 139, 255, 0.22);
            border-radius: 10px;
            padding: 11px 14px;
            color: var(--text-main);
            font-size: 0.92rem;
            min-width: 130px;
            cursor: pointer;
            transition: border-color 0.2s ease;
        }

        .filter-select:focus {
            outline: none;
            border-color: var(--highlight);
        }

        .filter-btn-sm {
            padding: 11px 20px;
            background: linear-gradient(120deg, #38BDF8, #818CF8);
            color: #070B14;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.92rem;
            box-shadow: var(--glow-cyan);
            transition: transform 0.2s ease, box-shadow 0.25s ease;
            white-space: nowrap;
        }

        .filter-btn-sm:hover {
            box-shadow: var(--glow-cyan-strong);
            transform: translateY(-2px);
        }

        /* Card Grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            overflow: hidden;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.3s ease;
        }

        .card:hover {
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.45);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
        }

        .card-cover {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
            background: #0A1228;
            position: relative;
        }

        .card-cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(7, 11, 20, 0.6) 0%, transparent 40%);
            pointer-events: none;
        }

        .card-body {
            padding: 20px 20px 22px;
        }

        .card-title {
            font-size: 1.08rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-desc {
            font-size: 0.9rem;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .card-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            border-radius: 999px;
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.25);
            font-size: 0.76rem;
            font-weight: 500;
            color: var(--highlight);
            letter-spacing: 0.4px;
            margin-right: 6px;
            margin-bottom: 6px;
        }

        .card-tag.purple {
            background: rgba(129, 140, 248, 0.14);
            border-color: rgba(129, 140, 248, 0.3);
            color: #B8BFFF;
        }

        .card-tag.green {
            background: rgba(52, 211, 153, 0.12);
            border-color: rgba(52, 211, 153, 0.28);
            color: #6EE7B7;
        }

        .card-tag.orange {
            background: rgba(251, 146, 60, 0.12);
            border-color: rgba(251, 146, 60, 0.28);
            color: #FCD34D;
        }

        /* List Cards */
        .list-card {
            display: flex;
            gap: 18px;
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 16px;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.3s ease;
            align-items: center;
        }

        .list-card:hover {
            transform: translateY(-2px);
            border-color: rgba(56, 189, 248, 0.45);
            box-shadow: 0 14px 32px rgba(0, 0, 0, 0.45);
        }

        .list-card-cover {
            width: 100px;
            height: 70px;
            border-radius: 12px;
            object-fit: cover;
            flex-shrink: 0;
            background: #0A1228;
        }

        .list-card-content {
            flex: 1;
            min-width: 0;
        }

        .list-card-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .list-card-desc {
            font-size: 0.85rem;
            color: var(--text-sub);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .list-card-action {
            flex-shrink: 0;
            padding: 9px 18px;
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.35);
            border-radius: 10px;
            color: var(--highlight);
            font-weight: 600;
            font-size: 0.88rem;
            transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
        }

        .list-card-action:hover {
            background: rgba(56, 189, 248, 0.2);
            transform: translateY(-1px);
            box-shadow: 0 0 14px rgba(56, 189, 248, 0.25);
        }

        /* Comparison Table */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .compare-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 26px 24px;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            transition: border-color 0.25s ease, transform 0.25s ease;
        }

        .compare-card:hover {
            border-color: rgba(56, 189, 248, 0.4);
            transform: translateY(-3px);
        }

        .compare-card.featured {
            border-color: rgba(56, 189, 248, 0.5);
            background: rgba(56, 189, 248, 0.06);
        }

        .compare-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .compare-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 9px 0;
            border-bottom: 1px solid rgba(82, 139, 255, 0.1);
            font-size: 0.92rem;
            color: var(--text-sub);
        }

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

        .compare-check {
            color: var(--highlight);
            font-weight: 700;
            flex-shrink: 0;
        }

        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 30px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: linear-gradient(180deg, var(--highlight), var(--purple), transparent);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 28px;
            padding-left: 16px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 8px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--highlight);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.6);
            border: 2px solid #070B14;
        }

        .timeline-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .timeline-desc {
            font-size: 0.9rem;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* Brand Intro */
        .brand-intro {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 36px 34px;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
        }

        .brand-intro p {
            font-size: 1rem;
            color: var(--text-sub);
            line-height: 1.9;
            margin-bottom: 14px;
        }

        .brand-intro p:last-child {
            margin-bottom: 0;
        }

        /* News */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .news-item {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: 14px;
            padding: 20px 22px;
            transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
        }

        .news-item:hover {
            border-color: rgba(56, 189, 248, 0.35);
            background: rgba(255, 255, 255, 0.08);
            transform: translateX(3px);
        }

        .news-date {
            flex-shrink: 0;
            width: 68px;
            text-align: center;
            font-family: 'ui-monospace', 'SF Mono', 'Consolas', monospace;
            font-size: 0.82rem;
            color: var(--highlight);
            padding-top: 2px;
        }

        .news-content h5 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .news-content p {
            font-size: 0.9rem;
            color: var(--text-sub);
            line-height: 1.75;
            margin-bottom: 10px;
        }

        .news-link {
            font-size: 0.86rem;
            font-weight: 600;
            color: var(--highlight);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.2s ease;
        }

        .news-link:hover {
            gap: 8px;
            color: var(--cyan);
        }

        /* Assurance */
        .assurance-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .assurance-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: 16px;
            padding: 24px 20px;
            text-align: center;
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, border-color 0.25s ease;
        }

        .assurance-card:hover {
            transform: translateY(-3px);
            border-color: rgba(56, 189, 248, 0.4);
        }

        .assurance-icon {
            font-size: 2rem;
            margin-bottom: 12px;
            display: block;
        }

        .assurance-card h4 {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .assurance-card p {
            font-size: 0.84rem;
            color: var(--text-sub);
            line-height: 1.65;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color 0.25s ease, background 0.25s ease;
        }

        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
            background: rgba(255, 255, 255, 0.06);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-main);
            list-style: none;
            user-select: none;
            transition: color 0.2s ease;
        }

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

        .faq-item summary:hover {
            color: var(--highlight);
        }

        .faq-index {
            color: var(--highlight);
            font-family: 'ui-monospace', 'SF Mono', 'Consolas', monospace;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .faq-answer {
            padding: 0 20px 18px 54px;
            font-size: 0.92rem;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* Form */
        .cta-form-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(56, 189, 248, 0.3);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card), 0 0 40px rgba(56, 189, 248, 0.08);
        }

        .form-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 22px;
        }

        .form-input {
            flex: 1;
            min-width: 180px;
            background: rgba(7, 11, 20, 0.7);
            border: 1px solid rgba(82, 139, 255, 0.22);
            border-radius: 10px;
            padding: 12px 16px;
            color: var(--text-main);
            font-size: 0.95rem;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .form-input::placeholder {
            color: var(--text-mute);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--highlight);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
        }

        /* CTA Strip */
        .cta-strip {
            background: linear-gradient(120deg, rgba(56, 189, 248, 0.12), rgba(129, 140, 248, 0.12));
            border: 1px solid rgba(56, 189, 248, 0.35);
            border-radius: var(--radius-card);
            padding: 44px 32px;
            text-align: center;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
        }

        /* Footer */
        .site-footer {
            background: #05080F;
            border-top: 1px solid rgba(82, 139, 255, 0.14);
            padding: 52px 0 28px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-brand:hover {
            color: var(--cyan);
        }

        .footer-desc {
            font-size: 0.88rem;
            color: var(--text-mute);
            line-height: 1.7;
        }

        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 14px;
            letter-spacing: 0.4px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul a {
            font-size: 0.86rem;
            color: var(--text-sub);
            transition: color 0.2s ease, transform 0.2s ease;
            display: inline-block;
        }

        .footer-col ul a:hover {
            color: var(--highlight);
            transform: translateX(2px);
        }

        .footer-bottom {
            border-top: 1px solid rgba(82, 139, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-mute);
        }

        .footer-bottom a {
            color: var(--text-sub);
            font-weight: 500;
        }

        .footer-bottom a:hover {
            color: var(--highlight);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .assurance-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-stats-panel {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .site-header .container {
                min-height: 60px;
            }
            .nav-group {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .logo-center {
                padding: 0 4px;
            }
            .logo-link {
                font-size: 1.15rem;
            }
            .hero {
                padding: 52px 0 48px;
            }
            .section {
                padding: 64px 0;
            }
            .hero-stats-panel {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-grid-3 {
                grid-template-columns: 1fr;
            }
            .assurance-grid {
                grid-template-columns: 1fr;
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .list-card {
                flex-direction: row;
                flex-wrap: wrap;
            }
            .list-card-cover {
                width: 100%;
                height: 140px;
            }
            .form-row {
                flex-direction: column;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-input,
            .filter-select,
            .filter-btn-sm {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 0.98rem;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-actions {
                flex-direction: column;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .compare-card {
                padding: 18px 16px;
            }
            .brand-intro {
                padding: 24px 18px;
            }
            .news-item {
                flex-direction: column;
                gap: 10px;
            }
            .news-date {
                width: auto;
                text-align: left;
            }
            .cta-strip {
                padding: 28px 18px;
            }
            .cta-form-card {
                padding: 24px 18px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-base: #070B14;
            --bg-surface: #0A1228;
            --cyan: #38BDF8;
            --purple: #818CF8;
            --highlight: #22D3EE;
            --text-main: #F4F7FF;
            --text-sub: #B8C4DE;
            --text-mute: #7E8CA8;
            --border-glass: rgba(82, 139, 255, 0.18);
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-bg-hover: rgba(255, 255, 255, 0.12);
            --radius-card: 18px;
            --shadow-card: 0 12px 28px rgba(0, 0, 0, 0.40);
            --glow-cyan: 0 0 16px rgba(56, 189, 248, 0.55);
            --glow-cyan-strong: 0 0 28px rgba(56, 189, 248, 0.75);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.7;
            font-weight: 400;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, opacity 0.2s ease;
        }

        a:hover {
            color: var(--cyan);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--highlight);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 11, 20, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 68px;
        }

        .nav-group {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }

        .nav-group.nav-left {
            justify-content: flex-start;
        }

        .nav-group.nav-right {
            justify-content: flex-end;
        }

        .logo-center {
            flex-shrink: 0;
            padding: 0 8px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo-link:hover {
            color: var(--cyan);
        }

        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--highlight);
            box-shadow: var(--glow-cyan);
            display: inline-block;
            flex-shrink: 0;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 13px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 10px;
            letter-spacing: 0.3px;
            white-space: nowrap;
            transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
        }

        .nav-link:hover {
            color: var(--text-main);
            background: rgba(56, 189, 248, 0.08);
            transform: translateY(-1px);
        }

        .nav-link.active {
            color: var(--highlight);
            background: rgba(56, 189, 248, 0.10);
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            color: var(--text-main);
            font-size: 1.4rem;
            transition: background 0.2s ease;
        }

        .menu-toggle:hover {
            background: var(--card-bg-hover);
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 24px 20px;
            background: rgba(7, 11, 20, 0.95);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
        }

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

        .mobile-nav .nav-link {
            padding: 12px 14px;
            font-size: 1rem;
            width: 100%;
        }

        /* Page Header (Category H1) */
        .page-hero {
            position: relative;
            padding: 56px 0 36px;
            background: linear-gradient(135deg, #070B14 0%, #0A1228 55%, #0D1B3A 100%);
            border-bottom: 1px solid rgba(82, 139, 255, 0.12);
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 15% 35%, rgba(56, 189, 248, 0.12), transparent 55%),
                radial-gradient(ellipse at 85% 60%, rgba(129, 140, 248, 0.10), transparent 50%);
            pointer-events: none;
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-mute);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

        .breadcrumb .sep {
            color: var(--text-mute);
            opacity: 0.6;
        }

        .page-hero h1 {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .page-hero .sub-desc {
            font-size: 1rem;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 780px;
        }

        /* Section common */
        .section-block {
            padding: 48px 0;
        }

        .section-block.alt-bg {
            background: rgba(10, 18, 40, 0.55);
            border-top: 1px solid rgba(82, 139, 255, 0.08);
            border-bottom: 1px solid rgba(82, 139, 255, 0.08);
        }

        .section-heading {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            letter-spacing: 0.4px;
        }

        .section-sub {
            color: var(--text-sub);
            font-size: 0.95rem;
            margin-bottom: 28px;
            line-height: 1.7;
        }

        /* Metric capsules */
        .metric-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .metric-capsule {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(82, 139, 255, 0.18);
            border-radius: 14px;
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            transition: background 0.25s ease, border 0.25s ease;
        }

        .metric-capsule:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(56, 189, 248, 0.35);
        }

        .metric-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(56, 189, 248, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--cyan);
            flex-shrink: 0;
        }

        .metric-num {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--highlight);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        .metric-label {
            font-size: 0.85rem;
            color: var(--text-sub);
        }

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

        .live-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, border 0.25s ease, background 0.25s ease;
        }

        .live-card:hover {
            transform: translateY(-2px);
            border-color: rgba(56, 189, 248, 0.45);
            background: var(--card-bg-hover);
        }

        .live-card .card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
            background: rgba(255, 255, 255, 0.04);
        }

        .live-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .live-card:hover .card-img img {
            transform: scale(1.04);
        }

        .live-card .card-body {
            padding: 18px 20px 20px;
        }

        .card-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 999px;
            background: rgba(56, 189, 248, 0.12);
            color: var(--cyan);
            border: 1px solid rgba(56, 189, 248, 0.18);
            letter-spacing: 0.3px;
            margin-bottom: 10px;
        }

        .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-desc {
            font-size: 0.88rem;
            color: var(--text-sub);
            line-height: 1.65;
            margin-bottom: 14px;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            font-size: 0.8rem;
            color: var(--text-mute);
            margin-bottom: 14px;
            flex-wrap: wrap;
        }

        .hot-value {
            color: var(--highlight);
            font-weight: 600;
            font-variant-numeric: tabular-nums;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            border-radius: 12px;
            background: linear-gradient(135deg, #38BDF8, #818CF8);
            color: #fff;
            box-shadow: var(--glow-cyan);
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            letter-spacing: 0.3px;
        }

        .btn-primary:hover {
            box-shadow: var(--glow-cyan-strong);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 10px rgba(56, 189, 248, 0.35);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 0.85rem;
            font-weight: 500;
            border-radius: 10px;
            border: 1px solid rgba(56, 189, 248, 0.35);
            background: rgba(56, 189, 248, 0.06);
            color: var(--text-main);
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .btn-outline:hover {
            border-color: var(--cyan);
            background: rgba(56, 189, 248, 0.14);
            color: var(--text-main);
        }

        /* Feature list (horizontal) */
        .feature-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(82, 139, 255, 0.14);
            border-radius: 16px;
            padding: 18px 20px;
            transition: all 0.25s ease;
        }

        .feature-item:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(56, 189, 248, 0.35);
        }

        .feature-item .fi-img {
            width: 76px;
            height: 76px;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.04);
        }

        .feature-item .fi-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* QA accordion */
        .qa-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .qa-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(82, 139, 255, 0.14);
            border-radius: 14px;
            padding: 18px 20px;
            transition: all 0.25s ease;
        }

        .qa-item:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(56, 189, 248, 0.30);
        }

        .qa-question {
            font-weight: 600;
            color: var(--text-main);
            font-size: 0.95rem;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .qa-question .qa-num {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(56, 189, 248, 0.15);
            color: var(--cyan);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: 700;
        }

        .qa-answer {
            color: var(--text-sub);
            font-size: 0.88rem;
            line-height: 1.7;
            padding-left: 36px;
        }

        /* Comparison table */
        .compare-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .compare-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(82, 139, 255, 0.14);
            border-radius: 16px;
            padding: 20px;
            transition: all 0.25s ease;
        }

        .compare-card:hover {
            border-color: rgba(56, 189, 248, 0.40);
            background: rgba(255, 255, 255, 0.09);
        }

        .compare-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .compare-card .cp-item {
            display: flex;
            justify-content: space-between;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-sub);
            padding: 8px 0;
            border-bottom: 1px solid rgba(82, 139, 255, 0.08);
        }

        .compare-card .cp-item:last-child {
            border-bottom: none;
        }

        .cp-val {
            color: var(--highlight);
            font-weight: 600;
            text-align: right;
        }

        /* CTA form */
        .cta-box {
            background: linear-gradient(135deg, rgba(56, 189, 248, 0.08), rgba(129, 140, 248, 0.08));
            border: 1px solid rgba(82, 139, 255, 0.25);
            border-radius: 22px;
            padding: 36px 32px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .cta-box .cta-text h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .cta-box .cta-text p {
            color: var(--text-sub);
            font-size: 0.9rem;
            max-width: 480px;
        }

        .cta-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

        .cta-form input {
            background: rgba(7, 11, 20, 0.65);
            border: 1px solid rgba(82, 139, 255, 0.25);
            border-radius: 10px;
            padding: 11px 14px;
            color: var(--text-main);
            font-size: 0.9rem;
            min-width: 200px;
            transition: border 0.2s ease, box-shadow 0.2s ease;
        }

        .cta-form input::placeholder {
            color: var(--text-mute);
        }

        .cta-form input:focus {
            border-color: var(--cyan);
            outline: none;
            box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
        }

        /* Footer */
        .site-footer {
            padding: 56px 0 28px;
            background: #060912;
            border-top: 1px solid rgba(82, 139, 255, 0.12);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .footer-brand:hover {
            color: var(--cyan);
        }

        .footer-desc {
            font-size: 0.85rem;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            letter-spacing: 0.4px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--text-sub);
            transition: color 0.2s ease;
        }

        .footer-col ul li a:hover {
            color: var(--cyan);
        }

        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid rgba(82, 139, 255, 0.10);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-mute);
        }

        .footer-bottom a {
            color: var(--text-sub);
        }

        .footer-bottom a:hover {
            color: var(--cyan);
        }

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

            .metric-row {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }

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

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

        @media (max-width: 768px) {
            .nav-group {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }

            .site-header .container {
                justify-content: space-between;
            }

            .logo-center {
                padding: 0;
                flex: 1;
                justify-content: center;
                display: flex;
            }

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

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

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

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

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .cta-box {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px 22px;
            }

            .cta-form {
                width: 100%;
            }

            .cta-form input {
                flex: 1;
                min-width: 0;
            }
        }

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

            .page-hero {
                padding: 40px 0 28px;
            }

            .page-hero h1 {
                font-size: 1.4rem;
            }

            .section-heading {
                font-size: 1.3rem;
            }

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

            .card-title {
                font-size: 0.95rem;
            }

            .metric-capsule {
                padding: 14px 16px;
            }

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

            .cta-form input {
                width: 100%;
                min-width: 100%;
            }

            .cta-form .btn-primary {
                width: 100%;
            }
        }

/* roulang page: category3 */
:root {
            --bg-base: #070B14;
            --bg-surface: #0A1228;
            --cyan: #38BDF8;
            --purple: #818CF8;
            --highlight: #22D3EE;
            --text-main: #F4F7FF;
            --text-sub: #B8C4DE;
            --text-mute: #7E8CA8;
            --border-glass: rgba(82, 139, 255, 0.18);
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-bg-hover: rgba(255, 255, 255, 0.12);
            --radius-card: 18px;
            --shadow-card: 0 12px 28px rgba(0, 0, 0, 0.40);
            --glow-cyan: 0 0 16px rgba(56, 189, 248, 0.55);
            --glow-cyan-strong: 0 0 28px rgba(56, 189, 248, 0.75);
        }

        * {
            box-sizing: border-box;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.7;
            font-weight: 400;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, opacity 0.2s ease;
        }
        a:hover {
            color: var(--cyan);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--highlight);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 11, 20, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 68px;
        }
        .nav-group {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }
        .nav-group.nav-left {
            justify-content: flex-start;
        }
        .nav-group.nav-right {
            justify-content: flex-end;
        }
        .logo-center {
            flex-shrink: 0;
            padding: 0 8px;
        }
        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-link:hover {
            color: var(--cyan);
        }
        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--highlight);
            box-shadow: var(--glow-cyan);
            display: inline-block;
            flex-shrink: 0;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 13px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 10px;
            letter-spacing: 0.3px;
            white-space: nowrap;
            transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
        }
        .nav-link:hover {
            color: var(--text-main);
            background: rgba(56, 189, 248, 0.08);
            transform: translateY(-1px);
        }
        .nav-link.active {
            color: var(--highlight);
            background: rgba(56, 189, 248, 0.10);
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            color: var(--text-main);
            font-size: 1.4rem;
            transition: background 0.2s ease;
        }
        .menu-toggle:hover {
            background: var(--card-bg-hover);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 24px 20px;
            background: rgba(7, 11, 20, 0.95);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav .nav-link {
            padding: 12px 14px;
            font-size: 1rem;
            width: 100%;
        }

        /* Category Hero */
        .cat-hero {
            position: relative;
            padding: 72px 0 56px;
            background: linear-gradient(160deg, #070B14 0%, #0A1228 40%, #0D1B3A 75%, #070B14 100%);
            overflow: hidden;
            border-bottom: 1px solid rgba(82, 139, 255, 0.10);
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 15% 30%, rgba(56, 189, 248, 0.14), transparent 55%),
                radial-gradient(ellipse at 85% 70%, rgba(129, 140, 248, 0.12), transparent 50%);
            pointer-events: none;
        }
        .cat-hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 36px;
            align-items: center;
        }
        .cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: 999px;
            border: 1px solid rgba(56, 189, 248, 0.25);
            background: rgba(56, 189, 248, 0.08);
            color: var(--cyan);
            font-size: 0.82rem;
            font-weight: 500;
            letter-spacing: 0.5px;
        }
        .cat-hero h1 {
            font-size: 2.4rem;
            font-weight: 700;
            line-height: 1.25;
            margin: 16px 0 14px;
            color: var(--text-main);
            letter-spacing: 0.5px;
        }
        .cat-hero .lead {
            font-size: 1.05rem;
            color: var(--text-sub);
            line-height: 1.8;
            margin: 0 0 24px;
            max-width: 560px;
        }
        .cat-stats-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cat-stat-pill {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 18px;
            border-radius: 14px;
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .cat-stat-pill .num {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--highlight);
            font-variant-numeric: tabular-nums;
            text-shadow: 0 0 12px rgba(34, 211, 238, 0.5);
        }
        .cat-stat-pill .label {
            font-size: 0.82rem;
            color: var(--text-mute);
            line-height: 1.3;
        }
        .cat-hero-visual {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            background: rgba(255, 255, 255, 0.04);
            aspect-ratio: 16/10;
            position: relative;
        }
        .cat-hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .cat-hero-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(7, 11, 20, 0.75) 100%);
            pointer-events: none;
        }
        .cat-hero-visual .overlay-tag {
            position: absolute;
            bottom: 14px;
            left: 14px;
            z-index: 2;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 12px;
            border-radius: 8px;
            background: rgba(7, 11, 20, 0.75);
            border: 1px solid rgba(56, 189, 248, 0.25);
            color: var(--cyan);
            font-size: 0.78rem;
            font-weight: 500;
            backdrop-filter: blur(8px);
        }

        /* Section base */
        section {
            padding: 72px 0;
        }
        .section-alt {
            background-color: var(--bg-surface);
            border-top: 1px solid rgba(82, 139, 255, 0.08);
            border-bottom: 1px solid rgba(82, 139, 255, 0.08);
        }
        .section-head {
            margin-bottom: 36px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .section-head h2 {
            font-size: 1.75rem;
            font-weight: 700;
            margin: 0;
            letter-spacing: 0.4px;
        }
        .section-head .sub {
            color: var(--text-sub);
            font-size: 0.95rem;
            margin-top: 6px;
            max-width: 600px;
        }
        .section-head .more-link {
            color: var(--cyan);
            font-size: 0.9rem;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            white-space: nowrap;
        }
        .section-head .more-link:hover {
            color: var(--highlight);
        }

        /* Cards grid */
        .card-grid {
            display: grid;
            gap: 20px;
        }
        .card-grid.cols-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .card-grid.cols-2 {
            grid-template-columns: repeat(2, 1fr);
        }

        .glass-card {
            border-radius: var(--radius-card);
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
            overflow: hidden;
        }
        .glass-card:hover {
            border-color: rgba(56, 189, 248, 0.45);
            background: var(--card-bg-hover);
            transform: translateY(-2px);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.50), var(--glow-cyan);
        }
        .glass-card .card-cover {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
            background: rgba(255, 255, 255, 0.03);
        }
        .glass-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .glass-card:hover .card-cover img {
            transform: scale(1.03);
        }
        .glass-card .card-cover .cover-tag {
            position: absolute;
            top: 10px;
            left: 10px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 10px;
            border-radius: 8px;
            background: rgba(7, 11, 20, 0.75);
            border: 1px solid rgba(56, 189, 248, 0.22);
            color: var(--cyan);
            font-size: 0.72rem;
            font-weight: 500;
        }
        .glass-card .card-body {
            padding: 20px 22px 22px;
        }
        .glass-card .card-title {
            font-size: 1.12rem;
            font-weight: 600;
            margin: 0 0 8px;
            line-height: 1.45;
        }
        .glass-card .card-desc {
            color: var(--text-sub);
            font-size: 0.88rem;
            line-height: 1.7;
            margin: 0 0 14px;
        }
        .glass-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 0.72rem;
            font-weight: 500;
            letter-spacing: 0.3px;
            border: 1px solid rgba(56, 189, 248, 0.25);
            background: rgba(56, 189, 248, 0.08);
            color: var(--cyan);
        }
        .heat-text {
            font-size: 0.82rem;
            color: #F59E0B;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 12px;
            background: linear-gradient(135deg, #38BDF8 0%, #818CF8 100%);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.3px;
            box-shadow: var(--glow-cyan);
            transition: box-shadow 0.3s ease, transform 0.3s ease, filter 0.3s ease;
        }
        .btn-glow:hover {
            box-shadow: var(--glow-cyan-strong);
            transform: translateY(-2px) scale(1.02);
            filter: brightness(1.08);
            color: #FFFFFF;
        }
        .btn-glow:active {
            transform: scale(0.98);
            filter: brightness(0.95);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 12px;
            border: 1px solid var(--border-glass);
            background: transparent;
            color: var(--text-main);
            font-weight: 500;
            font-size: 0.9rem;
            transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
        }
        .btn-outline:hover {
            border-color: rgba(56, 189, 248, 0.5);
            background: rgba(56, 189, 248, 0.08);
            color: var(--cyan);
            transform: translateY(-1px);
        }

        /* Horizontal list */
        .horizontal-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .h-item {
            display: flex;
            gap: 18px;
            align-items: center;
            padding: 14px 16px;
            border-radius: 16px;
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
        }
        .h-item:hover {
            border-color: rgba(56, 189, 248, 0.45);
            background: var(--card-bg-hover);
            transform: translateY(-1px);
        }
        .h-item .h-cover {
            width: 110px;
            height: 72px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.04);
        }
        .h-item .h-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .h-item .h-body {
            flex: 1;
            min-width: 0;
        }
        .h-item .h-title {
            font-size: 0.98rem;
            font-weight: 600;
            margin: 0 0 4px;
            line-height: 1.45;
        }
        .h-item .h-desc {
            font-size: 0.82rem;
            color: var(--text-mute);
            line-height: 1.55;
            margin: 0;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
        }

        /* Q&A accordion */
        .qa-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .qa-item {
            border-radius: 14px;
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            overflow: hidden;
            transition: background 0.25s ease, border-color 0.25s ease;
        }
        .qa-item:hover {
            background: var(--card-bg-hover);
            border-color: rgba(56, 189, 248, 0.30);
        }
        .qa-item summary {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            list-style: none;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-main);
            transition: color 0.2s ease;
        }
        .qa-item summary::-webkit-details-marker {
            display: none;
        }
        .qa-item summary:hover {
            color: var(--cyan);
        }
        .qa-item summary .qa-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            border-radius: 8px;
            background: rgba(56, 189, 248, 0.12);
            color: var(--cyan);
            font-size: 0.78rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .qa-item summary .qa-icon {
            margin-left: auto;
            color: var(--text-mute);
            font-size: 1.2rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .qa-item[open] summary .qa-icon {
            transform: rotate(45deg);
            color: var(--cyan);
        }
        .qa-item .qa-answer {
            padding: 0 20px 18px 58px;
            color: var(--text-sub);
            font-size: 0.88rem;
            line-height: 1.75;
        }

        /* Compare table */
        .compare-panel {
            border-radius: var(--radius-card);
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .compare-panel table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.88rem;
        }
        .compare-panel thead {
            background: rgba(56, 189, 248, 0.08);
        }
        .compare-panel th,
        .compare-panel td {
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid rgba(82, 139, 255, 0.10);
        }
        .compare-panel th {
            font-weight: 600;
            color: var(--text-main);
            font-size: 0.85rem;
            letter-spacing: 0.3px;
        }
        .compare-panel td {
            color: var(--text-sub);
        }
        .compare-panel tbody tr:last-child td {
            border-bottom: none;
        }
        .compare-panel tbody tr:hover {
            background: rgba(56, 189, 248, 0.05);
        }
        .compare-panel .highlight-cell {
            color: var(--highlight);
            font-weight: 600;
        }

        /* CTA form */
        .cta-form-panel {
            border-radius: var(--radius-card);
            border: 1px solid var(--border-glass);
            background: linear-gradient(135deg, rgba(56, 189, 248, 0.10) 0%, rgba(129, 140, 248, 0.10) 50%, rgba(255, 255, 255, 0.06) 100%);
            padding: 36px 40px;
            box-shadow: var(--shadow-card);
        }
        .form-grid {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: flex-end;
        }
        .form-field {
            flex: 1 1 180px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .form-field label {
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text-sub);
            letter-spacing: 0.3px;
        }
        .form-field input {
            padding: 12px 16px;
            border-radius: 10px;
            border: 1px solid rgba(82, 139, 255, 0.22);
            background: rgba(7, 11, 20, 0.65);
            color: var(--text-main);
            font-size: 0.92rem;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .form-field input::placeholder {
            color: var(--text-mute);
        }
        .form-field input:focus {
            outline: none;
            border-color: var(--highlight);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15), var(--glow-cyan);
        }

        /* Sidebar / theme strip */
        .theme-strip {
            display: grid;
            grid-template-columns: 1fr 1.6fr;
            gap: 32px;
            align-items: center;
        }
        .theme-cover {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            aspect-ratio: 16/11;
        }
        .theme-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Footer */
        .site-footer {
            background: #05080F;
            padding: 56px 0 28px;
            border-top: 1px solid rgba(82, 139, 255, 0.12);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .footer-brand:hover {
            color: var(--cyan);
        }
        .footer-desc {
            color: var(--text-mute);
            font-size: 0.88rem;
            line-height: 1.75;
            max-width: 300px;
            margin: 0;
        }
        .footer-col h5 {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 14px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            color: var(--text-mute);
            font-size: 0.85rem;
            transition: color 0.2s ease;
        }
        .footer-col ul a:hover {
            color: var(--cyan);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid rgba(82, 139, 255, 0.10);
            font-size: 0.8rem;
            color: var(--text-mute);
        }
        .footer-bottom a {
            color: var(--text-mute);
        }
        .footer-bottom a:hover {
            color: var(--cyan);
        }

        @media (max-width: 1024px) {
            .cat-hero-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .card-grid.cols-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .theme-strip {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-group.nav-left,
            .nav-group.nav-right {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .site-header .container {
                justify-content: space-between;
            }
            .logo-center {
                padding: 0;
            }
            section {
                padding: 52px 0;
            }
            .cat-hero {
                padding: 48px 0 40px;
            }
            .cat-hero h1 {
                font-size: 1.8rem;
            }
            .section-head h2 {
                font-size: 1.4rem;
            }
            .card-grid.cols-2,
            .card-grid.cols-3 {
                grid-template-columns: 1fr;
            }
            .cat-stats-row {
                gap: 10px;
            }
            .cat-stat-pill {
                padding: 8px 14px;
            }
            .cat-stat-pill .num {
                font-size: 1.1rem;
            }
            .h-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .h-item .h-cover {
                width: 100%;
                height: 160px;
            }
            .cta-form-panel {
                padding: 24px 20px;
            }
            .form-grid {
                flex-direction: column;
            }
            .compare-panel {
                overflow-x: auto;
            }
            .compare-panel table {
                min-width: 600px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .cat-hero h1 {
                font-size: 1.5rem;
            }
            .cat-stat-pill {
                flex: 1 1 calc(50% - 10px);
                min-width: 120px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-base: #070B14;
            --bg-surface: #0A1228;
            --cyan: #38BDF8;
            --purple: #818CF8;
            --highlight: #22D3EE;
            --text-main: #F4F7FF;
            --text-sub: #B8C4DE;
            --text-mute: #7E8CA8;
            --border-glass: rgba(82, 139, 255, 0.18);
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-bg-hover: rgba(255, 255, 255, 0.12);
            --radius-card: 18px;
            --shadow-card: 0 12px 28px rgba(0, 0, 0, 0.40);
            --glow-cyan: 0 0 16px rgba(56, 189, 248, 0.55);
            --glow-cyan-strong: 0 0 28px rgba(56, 189, 248, 0.75);
        }

        /* roulang page: game-live */
        :root {
            --bg-base: #070B14;
            --bg-surface: #0A1228;
            --cyan: #38BDF8;
            --purple: #818CF8;
            --highlight: #22D3EE;
            --text-main: #F4F7FF;
            --text-sub: #B8C4DE;
            --text-mute: #7E8CA8;
            --border-glass: rgba(82, 139, 255, 0.18);
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-bg-hover: rgba(255, 255, 255, 0.12);
            --radius-card: 18px;
            --shadow-card: 0 12px 28px rgba(0, 0, 0, 0.40);
            --glow-cyan: 0 0 16px rgba(56, 189, 248, 0.55);
            --glow-cyan-strong: 0 0 28px rgba(56, 189, 248, 0.75);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.7;
            font-weight: 400;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, opacity 0.2s ease;
        }

        a:hover {
            color: var(--cyan);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--highlight);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 11, 20, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 68px;
        }

        .nav-group {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }

        .nav-group.nav-left {
            justify-content: flex-start;
        }

        .nav-group.nav-right {
            justify-content: flex-end;
        }

        .logo-center {
            flex-shrink: 0;
            padding: 0 8px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo-link:hover {
            color: var(--cyan);
        }

        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--highlight);
            box-shadow: var(--glow-cyan);
            display: inline-block;
            flex-shrink: 0;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 13px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 10px;
            letter-spacing: 0.3px;
            white-space: nowrap;
            transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
        }

        .nav-link:hover {
            color: var(--text-main);
            background: rgba(56, 189, 248, 0.08);
            transform: translateY(-1px);
        }

        .nav-link.active {
            color: var(--highlight);
            background: rgba(56, 189, 248, 0.10);
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            color: var(--text-main);
            font-size: 1.4rem;
            transition: background 0.2s ease;
        }

        .menu-toggle:hover {
            background: var(--card-bg-hover);
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 24px 20px;
            background: rgba(7, 11, 20, 0.95);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
        }

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

        .mobile-nav .nav-link {
            padding: 12px 14px;
            font-size: 1rem;
            width: 100%;
        }

        /* Category Page H1 Section */
        .cat-h1-section {
            position: relative;
            padding: 56px 0 36px;
            background: linear-gradient(135deg, #070B14 0%, #0A1228 50%, #0D1B3A 80%, #070B14 100%);
            border-bottom: 1px solid rgba(82, 139, 255, 0.12);
            overflow: hidden;
        }

        .cat-h1-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(56, 189, 248, 0.12), transparent 55%), radial-gradient(ellipse at 75% 60%, rgba(129, 140, 248, 0.1), transparent 50%);
            pointer-events: none;
        }

        .cat-h1-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 32px;
            align-items: end;
        }

        .cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(56, 189, 248, 0.1);
            border: 1px solid rgba(56, 189, 248, 0.28);
            color: var(--cyan);
            font-size: 0.82rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .cat-h1-section h1 {
            font-size: clamp(1.9rem, 4vw, 2.8rem);
            line-height: 1.2;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 14px;
            letter-spacing: -0.5px;
        }

        .cat-h1-section h1 .accent {
            color: var(--highlight);
            text-shadow: var(--glow-cyan);
        }

        .cat-h1-desc {
            font-size: 1.02rem;
            color: var(--text-sub);
            max-width: 560px;
            line-height: 1.75;
            margin: 0;
        }

        .cat-h1-side {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        .cat-h1-side .pill {
            padding: 8px 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            color: var(--text-sub);
            font-size: 0.82rem;
            font-weight: 500;
            white-space: nowrap;
            transition: all 0.2s ease;
        }

        .cat-h1-side .pill:hover {
            background: rgba(56, 189, 248, 0.08);
            border-color: rgba(56, 189, 248, 0.3);
            color: var(--cyan);
        }

        /* Metric pills */
        .cat-metrics-section {
            padding: 28px 0 8px;
            background: var(--bg-base);
        }

        .cat-metrics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .cat-metric-pill {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 20px;
            border-radius: var(--radius-card);
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
        }

        .cat-metric-pill:hover {
            transform: translateY(-2px);
            border-color: rgba(56, 189, 248, 0.35);
            background: var(--card-bg-hover);
        }

        .cat-metric-pill .metric-icon {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(56, 189, 248, 0.1);
            color: var(--highlight);
            font-size: 1.2rem;
        }

        .cat-metric-pill .metric-info {
            flex: 1;
        }

        .cat-metric-pill .metric-value {
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--text-main);
            font-family: 'SF Mono', 'Menlo', 'Consolas', monospace;
            letter-spacing: -0.5px;
            line-height: 1.2;
            text-shadow: 0 0 12px rgba(56, 189, 248, 0.35);
        }

        .cat-metric-pill .metric-label {
            font-size: 0.82rem;
            color: var(--text-mute);
        }

        /* Section titles */
        .section-title-wrap {
            margin-bottom: 28px;
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .section-title-wrap h2 {
            font-size: clamp(1.4rem, 2.5vw, 1.85rem);
            font-weight: 700;
            color: var(--text-main);
            margin: 0;
            letter-spacing: -0.3px;
        }

        .section-title-wrap h2 .accent {
            color: var(--highlight);
        }

        .section-title-wrap .section-desc {
            color: var(--text-mute);
            font-size: 0.9rem;
            margin: 6px 0 0;
        }

        .section-more {
            color: var(--cyan);
            font-size: 0.88rem;
            font-weight: 500;
            padding: 6px 12px;
            border-radius: 8px;
            transition: background 0.2s ease;
        }

        .section-more:hover {
            background: rgba(56, 189, 248, 0.08);
        }

        /* Game cards grid */
        .game-card-grid-section {
            padding: 44px 0 12px;
            background: var(--bg-surface);
            border-top: 1px solid rgba(82, 139, 255, 0.08);
            border-bottom: 1px solid rgba(82, 139, 255, 0.08);
        }

        .game-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .game-card {
            border-radius: var(--radius-card);
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .game-card:hover {
            transform: translateY(-3px);
            border-color: rgba(56, 189, 248, 0.45);
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5), var(--glow-cyan);
        }

        .game-card .card-cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #0A1228;
        }

        .game-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .game-card .card-cover .live-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 10px;
            border-radius: 999px;
            background: rgba(220, 38, 38, 0.85);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            z-index: 2;
        }

        .game-card .card-cover .live-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #fff;
            animation: pulse-dot 1.5s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(0.7); }
        }

        .game-card .card-cover .game-tag {
            position: absolute;
            bottom: 12px;
            left: 12px;
            padding: 4px 10px;
            border-radius: 8px;
            background: rgba(7, 11, 20, 0.75);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            color: var(--cyan);
            font-size: 0.75rem;
            font-weight: 500;
            z-index: 2;
        }

        .game-card .card-body {
            padding: 18px 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .game-card .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .game-card .card-desc {
            font-size: 0.85rem;
            color: var(--text-sub);
            line-height: 1.6;
            margin: 0 0 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .game-card .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--text-mute);
            margin-bottom: 14px;
            flex-wrap: wrap;
        }

        .game-card .card-meta .heat {
            color: #F59E0B;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .game-card .card-actions {
            display: flex;
            gap: 8px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: 10px;
            font-size: 0.86rem;
            font-weight: 600;
            transition: all 0.22s ease;
            letter-spacing: 0.3px;
        }

        .btn-glow {
            background: linear-gradient(135deg, #38BDF8 0%, #818CF8 100%);
            color: #070B14;
            box-shadow: var(--glow-cyan);
        }

        .btn-glow:hover {
            box-shadow: var(--glow-cyan-strong);
            transform: translateY(-1px);
            color: #070B14;
        }

        .btn-glow:active {
            transform: translateY(0);
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.4);
            filter: brightness(0.92);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            color: var(--text-sub);
        }

        .btn-ghost:hover {
            background: var(--card-bg-hover);
            color: var(--text-main);
            border-color: rgba(56, 189, 248, 0.3);
        }

        .btn-sm {
            padding: 7px 14px;
            font-size: 0.8rem;
        }

        /* Featured recommendation */
        .cat-featured-section {
            padding: 52px 0 10px;
            background: var(--bg-base);
        }

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

        .featured-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 16px;
            border-radius: 14px;
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            transition: all 0.22s ease;
        }

        .featured-item:hover {
            background: var(--card-bg-hover);
            border-color: rgba(56, 189, 248, 0.35);
            transform: translateX(4px);
        }

        .featured-item img {
            width: 72px;
            height: 48px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }

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

        .featured-item .featured-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .featured-item .featured-desc {
            font-size: 0.8rem;
            color: var(--text-mute);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .featured-item .featured-tag {
            padding: 4px 10px;
            border-radius: 999px;
            font-size: 0.72rem;
            font-weight: 500;
            background: rgba(56, 189, 248, 0.08);
            color: var(--cyan);
            border: 1px solid rgba(56, 189, 248, 0.2);
            flex-shrink: 0;
        }

        /* Q&A */
        .cat-qa-section {
            padding: 52px 0 10px;
            background: var(--bg-surface);
            border-top: 1px solid rgba(82, 139, 255, 0.08);
            border-bottom: 1px solid rgba(82, 139, 255, 0.08);
        }

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

        .qa-item {
            border-radius: 14px;
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            overflow: hidden;
            transition: all 0.2s ease;
        }

        .qa-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
            background: var(--card-bg-hover);
        }

        .qa-item summary {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 18px;
            cursor: pointer;
            list-style: none;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-main);
            user-select: none;
        }

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

        .qa-item summary .qa-num {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: rgba(56, 189, 248, 0.1);
            color: var(--cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: 700;
        }

        .qa-item summary .qa-arrow {
            margin-left: auto;
            color: var(--text-mute);
            transition: transform 0.25s ease;
            font-size: 0.8rem;
        }

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

        .qa-item .qa-answer {
            padding: 0 18px 16px 58px;
            font-size: 0.88rem;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* Watch guide comparison */
        .cat-comparison-section {
            padding: 52px 0 10px;
            background: var(--bg-base);
        }

        .comparison-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .comparison-card {
            border-radius: var(--radius-card);
            padding: 22px 20px;
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: all 0.22s ease;
        }

        .comparison-card:hover {
            transform: translateY(-2px);
            border-color: rgba(56, 189, 248, 0.3);
            background: var(--card-bg-hover);
        }

        .comparison-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .comparison-card .comparison-icon {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(56, 189, 248, 0.1);
            color: var(--highlight);
            font-size: 0.9rem;
        }

        .comparison-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .comparison-card ul li {
            font-size: 0.82rem;
            color: var(--text-sub);
            display: flex;
            align-items: center;
            gap: 6px;
            line-height: 1.5;
        }

        .comparison-card ul li::before {
            content: '·';
            color: var(--cyan);
            font-weight: 700;
        }

        /* Local CTA form */
        .cat-form-section {
            padding: 52px 0 40px;
            background: var(--bg-surface);
            border-top: 1px solid rgba(82, 139, 255, 0.08);
        }

        .cat-form-card {
            border-radius: var(--radius-card);
            padding: 30px 28px;
            background: linear-gradient(135deg, rgba(56, 189, 248, 0.06) 0%, rgba(129, 140, 248, 0.08) 50%, rgba(34, 211, 238, 0.04) 100%);
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: center;
        }

        .cat-form-card .form-copy h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px;
        }

        .cat-form-card .form-copy p {
            font-size: 0.9rem;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.7;
        }

        .cat-form-card form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: end;
        }

        .cat-form-card .form-group {
            display: flex;
            flex-direction: column;
            gap: 5px;
            flex: 1;
            min-width: 150px;
        }

        .cat-form-card .form-group label {
            font-size: 0.78rem;
            color: var(--text-mute);
            font-weight: 500;
        }

        .cat-form-card .form-group input {
            padding: 10px 14px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            color: var(--text-main);
            font-size: 0.88rem;
            transition: all 0.2s ease;
        }

        .cat-form-card .form-group input:focus {
            border-color: var(--highlight);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
            outline: none;
        }

        .cat-form-card .form-group input::placeholder {
            color: var(--text-mute);
        }

        /* Sidebar / special topic */
        .cat-sidebar-section {
            padding: 52px 0 60px;
            background: var(--bg-base);
        }

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

        .sidebar-card {
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            transition: all 0.22s ease;
        }

        .sidebar-card:hover {
            transform: translateY(-2px);
            border-color: rgba(56, 189, 248, 0.35);
        }

        .sidebar-card img {
            width: 100%;
            aspect-ratio: 16/8;
            object-fit: cover;
        }

        .sidebar-card .sidebar-body {
            padding: 16px 18px 18px;
        }

        .sidebar-card .sidebar-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(56, 189, 248, 0.08);
            color: var(--cyan);
            font-size: 0.7rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .sidebar-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 6px;
            line-height: 1.4;
        }

        .sidebar-card p {
            font-size: 0.82rem;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: #050810;
            border-top: 1px solid rgba(82, 139, 255, 0.10);
            padding: 48px 0 22px;
            color: var(--text-sub);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .footer-brand:hover {
            color: var(--cyan);
        }

        .footer-desc {
            font-size: 0.86rem;
            color: var(--text-mute);
            line-height: 1.7;
            max-width: 340px;
            margin: 0;
        }

        .footer-col h5 {
            font-size: 0.88rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 12px;
            letter-spacing: 0.3px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 7px;
        }

        .footer-col ul li a {
            font-size: 0.84rem;
            color: var(--text-mute);
            transition: color 0.2s ease;
        }

        .footer-col ul li a:hover {
            color: var(--cyan);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 18px;
            border-top: 1px solid rgba(82, 139, 255, 0.08);
            font-size: 0.78rem;
            color: var(--text-mute);
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: var(--text-sub);
            font-weight: 500;
        }

        .footer-bottom a:hover {
            color: var(--cyan);
        }

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

            .cat-h1-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .cat-h1-side {
                justify-content: flex-start;
            }

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

            .cat-form-card {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-group {
                display: none;
            }

            .logo-center {
                margin: 0 auto;
            }

            .menu-toggle {
                display: flex;
            }

            .site-header .container {
                flex-wrap: nowrap;
            }

            .cat-metrics-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .cat-metric-pill {
                padding: 14px 16px;
            }

            .game-card-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .featured-item {
                flex-wrap: wrap;
                gap: 10px;
            }

            .featured-item img {
                width: 56px;
                height: 38px;
            }

            .comparison-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .sidebar-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .cat-form-card {
                padding: 22px 18px;
            }

            .cat-form-card form {
                flex-direction: column;
            }

            .cat-form-card .form-group {
                width: 100%;
                min-width: auto;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }

            .section-title-wrap {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .cat-h1-section {
                padding: 40px 0 28px;
            }
        }

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

            .cat-h1-section h1 {
                font-size: 1.6rem;
            }

            .cat-metrics-grid {
                grid-template-columns: 1fr;
            }

            .game-card .card-body {
                padding: 14px 14px 16px;
            }

            .btn {
                padding: 8px 14px;
                font-size: 0.8rem;
            }

            .qa-item summary {
                padding: 13px 14px;
                font-size: 0.88rem;
            }

            .qa-item .qa-answer {
                padding: 0 14px 14px 48px;
                font-size: 0.82rem;
            }

            .cat-form-card h3 {
                font-size: 1.1rem;
            }
        }

/* roulang page: category4 */
:root {
            --bg-base: #070B14;
            --bg-surface: #0A1228;
            --cyan: #38BDF8;
            --purple: #818CF8;
            --highlight: #22D3EE;
            --text-main: #F4F7FF;
            --text-sub: #B8C4DE;
            --text-mute: #7E8CA8;
            --border-glass: rgba(82, 139, 255, 0.18);
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-bg-hover: rgba(255, 255, 255, 0.12);
            --radius-card: 18px;
            --shadow-card: 0 12px 28px rgba(0, 0, 0, 0.40);
            --glow-cyan: 0 0 16px rgba(56, 189, 248, 0.55);
            --glow-cyan-strong: 0 0 28px rgba(56, 189, 248, 0.75);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.7;
            font-weight: 400;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, opacity 0.2s ease;
        }
        a:hover {
            color: var(--cyan);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--highlight);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 11, 20, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 68px;
        }
        .nav-group {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }
        .nav-group.nav-left {
            justify-content: flex-start;
        }
        .nav-group.nav-right {
            justify-content: flex-end;
        }
        .logo-center {
            flex-shrink: 0;
            padding: 0 8px;
        }
        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-link:hover {
            color: var(--cyan);
        }
        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--highlight);
            box-shadow: var(--glow-cyan);
            display: inline-block;
            flex-shrink: 0;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 13px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 10px;
            letter-spacing: 0.3px;
            white-space: nowrap;
            transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
        }
        .nav-link:hover {
            color: var(--text-main);
            background: rgba(56, 189, 248, 0.08);
            transform: translateY(-1px);
        }
        .nav-link.active {
            color: var(--highlight);
            background: rgba(56, 189, 248, 0.10);
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            color: var(--text-main);
            font-size: 1.4rem;
            transition: background 0.2s ease;
        }
        .menu-toggle:hover {
            background: var(--card-bg-hover);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 24px 20px;
            background: rgba(7, 11, 20, 0.95);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav .nav-link {
            padding: 12px 14px;
            font-size: 1rem;
            width: 100%;
        }
        .page-hero {
            position: relative;
            padding: 56px 0 64px;
            background: linear-gradient(160deg, #070B14 0%, #0A1228 40%, #0D1B3A 75%, #070B14 100%);
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 15% 25%, rgba(56, 189, 248, 0.14), transparent 55%), radial-gradient(ellipse at 85% 65%, rgba(129, 140, 248, 0.12), transparent 50%);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-mute);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-sub);
        }
        .breadcrumb a:hover {
            color: var(--cyan);
        }
        .breadcrumb span {
            color: var(--text-mute);
        }
        .page-hero h1 {
            font-size: 2.75rem;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.5px;
            margin-bottom: 18px;
            color: var(--text-main);
        }
        .page-hero .hero-desc {
            font-size: 1.08rem;
            color: var(--text-sub);
            max-width: 780px;
            line-height: 1.8;
        }
        .stat-capsules {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 28px;
        }
        .stat-capsule {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 20px;
            border-radius: 999px;
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            font-size: 0.95rem;
            color: var(--text-sub);
            white-space: nowrap;
        }
        .stat-capsule strong {
            color: var(--highlight);
            font-weight: 700;
            font-size: 1.1rem;
            font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
            text-shadow: var(--glow-cyan);
        }
        .section-block {
            padding: 76px 0;
            background: var(--bg-base);
        }
        .section-block.section-alt {
            background: var(--bg-surface);
            border-top: 1px solid rgba(82, 139, 255, 0.08);
            border-bottom: 1px solid rgba(82, 139, 255, 0.08);
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: 1.75rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .section-header p {
            font-size: 1rem;
            color: var(--text-sub);
            max-width: 680px;
            line-height: 1.75;
        }
        .music-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .music-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
        }
        .music-card:hover {
            border-color: rgba(56, 189, 248, 0.45);
            transform: translateY(-4px);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.50), var(--glow-cyan);
        }
        .music-card .cover-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #0A1228;
        }
        .music-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .music-card:hover .cover-wrap img {
            transform: scale(1.04);
        }
        .cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(7, 11, 20, 0.85) 0%, transparent 55%);
            pointer-events: none;
        }
        .live-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 12px;
            border-radius: 999px;
            background: rgba(7, 11, 20, 0.75);
            border: 1px solid rgba(34, 211, 238, 0.4);
            color: var(--highlight);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.4px;
        }
        .live-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #22D3EE;
            box-shadow: 0 0 8px #22D3EE;
            animation: pulse-dot 1.6s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.6;
                transform: scale(1.3);
            }
        }
        .music-card .card-body {
            padding: 20px 22px 22px;
        }
        .music-card .card-body h3 {
            font-size: 1.12rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.45;
            color: var(--text-main);
        }
        .music-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            border-radius: 999px;
            font-size: 0.72rem;
            font-weight: 500;
            background: rgba(56, 189, 248, 0.10);
            border: 1px solid rgba(56, 189, 248, 0.25);
            color: var(--cyan);
            letter-spacing: 0.3px;
        }
        .tag-purple {
            background: rgba(129, 140, 248, 0.10);
            border-color: rgba(129, 140, 248, 0.25);
            color: var(--purple);
        }
        .heat {
            font-size: 0.8rem;
            color: var(--text-mute);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .heat strong {
            color: var(--highlight);
            font-weight: 600;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.4px;
            background: linear-gradient(135deg, #38BDF8 0%, #818CF8 100%);
            color: #070B14;
            box-shadow: var(--glow-cyan);
            transition: box-shadow 0.25s ease, transform 0.25s ease, filter 0.25s ease;
            white-space: nowrap;
        }
        .btn-primary:hover {
            box-shadow: var(--glow-cyan-strong);
            transform: translateY(-2px) scale(1.02);
            color: #070B14;
            filter: brightness(1.05);
        }
        .btn-primary:active {
            transform: translateY(0) scale(0.98);
            filter: brightness(0.95);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 12px;
            font-weight: 500;
            font-size: 0.88rem;
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            color: var(--text-main);
            transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            border-color: rgba(56, 189, 248, 0.45);
            background: var(--card-bg-hover);
            color: var(--text-main);
            transform: translateY(-1px);
        }
        .reco-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .reco-item {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: 16px;
            padding: 16px 20px;
            transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
        }
        .reco-item:hover {
            border-color: rgba(56, 189, 248, 0.4);
            background: var(--card-bg-hover);
            transform: translateX(4px);
        }
        .reco-item .reco-cover {
            width: 120px;
            aspect-ratio: 16/10;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
            background: #0A1228;
        }
        .reco-item .reco-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .reco-item .reco-info {
            flex: 1;
            min-width: 0;
        }
        .reco-item .reco-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-main);
        }
        .reco-item .reco-info p {
            font-size: 0.86rem;
            color: var(--text-sub);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: 16px;
            padding: 18px 22px;
            transition: border-color 0.25s ease, background 0.25s ease;
        }
        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.35);
            background: var(--card-bg-hover);
        }
        .faq-item h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .faq-item h4 .faq-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 26px;
            height: 26px;
            border-radius: 8px;
            background: rgba(56, 189, 248, 0.12);
            color: var(--cyan);
            font-size: 0.8rem;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .faq-item p {
            font-size: 0.9rem;
            color: var(--text-sub);
            line-height: 1.7;
            padding-left: 36px;
        }
        .compare-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .compare-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: 16px;
            padding: 24px 22px;
            transition: border-color 0.25s ease, transform 0.25s ease;
        }
        .compare-card:hover {
            border-color: rgba(56, 189, 248, 0.35);
            transform: translateY(-3px);
        }
        .compare-card h4 {
            font-size: 0.98rem;
            font-weight: 600;
            margin-bottom: 14px;
            color: var(--text-main);
        }
        .compare-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px solid rgba(82, 139, 255, 0.08);
            font-size: 0.86rem;
            color: var(--text-sub);
        }
        .compare-item:last-child {
            border-bottom: none;
        }
        .compare-item span:last-child {
            color: var(--text-main);
            font-weight: 500;
        }
        .compare-item .highlight-val {
            color: var(--highlight);
            font-weight: 600;
        }
        .subscribe-box {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: 22px;
            padding: 40px 36px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .subscribe-box h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .subscribe-box p {
            font-size: 0.95rem;
            color: var(--text-sub);
            line-height: 1.7;
        }
        .subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .form-input {
            padding: 13px 18px;
            border-radius: 12px;
            border: 1px solid var(--border-glass);
            background: rgba(7, 11, 20, 0.7);
            color: var(--text-main);
            font-size: 0.95rem;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            width: 100%;
        }
        .form-input::placeholder {
            color: var(--text-mute);
        }
        .form-input:focus {
            border-color: var(--cyan);
            box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
            outline: none;
        }
        .site-footer {
            background: #05080F;
            border-top: 1px solid rgba(82, 139, 255, 0.12);
            padding: 56px 0 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .footer-brand:hover {
            color: var(--cyan);
        }
        .footer-desc {
            font-size: 0.88rem;
            color: var(--text-mute);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--text-mute);
            transition: color 0.2s ease;
        }
        .footer-col ul li a:hover {
            color: var(--cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(82, 139, 255, 0.10);
            padding-top: 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-mute);
        }
        .footer-bottom a {
            color: var(--text-sub);
        }
        .footer-bottom a:hover {
            color: var(--cyan);
        }
        @media (max-width: 1024px) {
            .music-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .compare-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            .nav-group {
                display: none;
            }
            .menu-toggle {
                display: inline-flex;
            }
            .logo-center {
                flex: 1;
                display: flex;
                justify-content: center;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .music-card-grid {
                grid-template-columns: 1fr;
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .subscribe-box {
                grid-template-columns: 1fr;
                padding: 28px 24px;
            }
            .stat-capsules {
                gap: 10px;
            }
            .stat-capsule {
                padding: 10px 16px;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-hero {
                padding: 40px 0 48px;
            }
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .section-block {
                padding: 56px 0;
            }
            .reco-item {
                flex-direction: column;
                gap: 12px;
            }
            .reco-item .reco-cover {
                width: 100%;
                aspect-ratio: 16/9;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .navbar-toggle-label {
                display: inline-flex;
            }
        }

/* roulang page: category5 */
:root {
            --bg-base: #070B14;
            --bg-surface: #0A1228;
            --cyan: #38BDF8;
            --purple: #818CF8;
            --highlight: #22D3EE;
            --text-main: #F4F7FF;
            --text-sub: #B8C4DE;
            --text-mute: #7E8CA8;
            --border-glass: rgba(82, 139, 255, 0.18);
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-bg-hover: rgba(255, 255, 255, 0.12);
            --radius-card: 18px;
            --shadow-card: 0 12px 28px rgba(0, 0, 0, 0.40);
            --glow-cyan: 0 0 16px rgba(56, 189, 248, 0.55);
            --glow-cyan-strong: 0 0 28px rgba(56, 189, 248, 0.75);
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.7;
            font-weight: 400;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, opacity 0.2s ease;
        }

        a:hover {
            color: var(--cyan);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--highlight);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 11, 20, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 68px;
        }

        .nav-group {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }

        .nav-group.nav-left {
            justify-content: flex-start;
        }

        .nav-group.nav-right {
            justify-content: flex-end;
        }

        .logo-center {
            flex-shrink: 0;
            padding: 0 8px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo-link:hover {
            color: var(--cyan);
        }

        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--highlight);
            box-shadow: var(--glow-cyan);
            display: inline-block;
            flex-shrink: 0;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 13px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 10px;
            letter-spacing: 0.3px;
            white-space: nowrap;
            transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
        }

        .nav-link:hover {
            color: var(--text-main);
            background: rgba(56, 189, 248, 0.08);
            transform: translateY(-1px);
        }

        .nav-link.active {
            color: var(--highlight);
            background: rgba(56, 189, 248, 0.10);
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            color: var(--text-main);
            font-size: 1.4rem;
            transition: background 0.2s ease;
        }

        .menu-toggle:hover {
            background: var(--card-bg-hover);
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 24px 20px;
            background: rgba(7, 11, 20, 0.95);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
        }

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

        .mobile-nav .nav-link {
            padding: 12px 14px;
            font-size: 1rem;
            width: 100%;
        }

        /* Main content */
        main {
            display: block;
            background: var(--bg-base);
        }

        /* Category H1 section */
        .cat-hero {
            position: relative;
            padding: 72px 0 48px;
            background: linear-gradient(135deg, #070B14 0%, #0A1228 50%, #0D1B3A 70%, #070B14 100%);
            overflow: hidden;
            border-bottom: 1px solid rgba(82, 139, 255, 0.12);
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 25% 30%, rgba(56, 189, 248, 0.12), transparent 50%),
                radial-gradient(ellipse at 75% 65%, rgba(129, 140, 248, 0.10), transparent 50%);
            pointer-events: none;
        }

        .cat-hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }

        .cat-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-mute);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .cat-breadcrumb a {
            color: var(--text-sub);
            transition: color 0.2s ease;
        }

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

        .cat-breadcrumb .sep {
            color: var(--text-mute);
            opacity: 0.6;
        }

        .cat-hero h1 {
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .cat-hero h1 .highlight-text {
            color: var(--cyan);
            text-shadow: var(--glow-cyan);
        }

        .cat-hero p {
            font-size: 1.06rem;
            color: var(--text-sub);
            line-height: 1.75;
            max-width: 720px;
        }

        /* Metric pills */
        .metric-pills {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 28px;
        }

        .metric-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 24px;
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            font-size: 0.88rem;
            color: var(--text-sub);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: border-color 0.2s ease, background 0.2s ease;
        }

        .metric-pill:hover {
            border-color: rgba(56, 189, 248, 0.4);
            background: var(--card-bg-hover);
        }

        .metric-pill .pill-icon {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--highlight);
            box-shadow: var(--glow-cyan);
            flex-shrink: 0;
        }

        .metric-pill .pill-num {
            font-weight: 700;
            color: var(--highlight);
            font-variant-numeric: tabular-nums;
        }

        /* Section common */
        .section {
            padding: 72px 0;
            position: relative;
        }

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

        .section-header {
            margin-bottom: 36px;
        }

        .section-header h2 {
            font-size: 1.8rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .section-header h2 .title-accent {
            color: var(--cyan);
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 680px;
        }

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

        .rank-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .rank-card:hover {
            border-color: rgba(56, 189, 248, 0.4);
            transform: translateY(-3px);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45), var(--glow-cyan);
        }

        .rank-card .cover-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #0A1228;
        }

        .rank-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .rank-card:hover .cover-wrap img {
            transform: scale(1.04);
        }

        .rank-card .cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 11, 20, 0.1) 40%, rgba(7, 11, 20, 0.75) 100%);
            pointer-events: none;
        }

        .rank-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 12px;
            border-radius: 10px;
            background: rgba(7, 11, 20, 0.68);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(56, 189, 248, 0.3);
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--highlight);
            letter-spacing: 0.3px;
        }

        .rank-badge.top1 {
            border-color: rgba(255, 215, 0, 0.5);
            color: #FFD700;
            background: rgba(120, 100, 0, 0.35);
        }

        .rank-badge.top2 {
            border-color: rgba(192, 192, 192, 0.45);
            color: #C0C0C0;
            background: rgba(80, 80, 100, 0.3);
        }

        .rank-badge.top3 {
            border-color: rgba(205, 127, 50, 0.5);
            color: #CD7F32;
            background: rgba(100, 60, 20, 0.3);
        }

        .rank-card .card-body {
            padding: 20px 20px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .rank-card .card-title-row {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 8px;
        }

        .rank-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.35;
        }

        .rank-card .card-title a {
            transition: color 0.2s ease;
        }

        .rank-card .card-title a:hover {
            color: var(--cyan);
        }

        .rank-card .heat-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 10px;
            border-radius: 8px;
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.2);
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--highlight);
            white-space: nowrap;
            flex-shrink: 0;
            font-variant-numeric: tabular-nums;
        }

        .rank-card .card-desc {
            font-size: 0.9rem;
            color: var(--text-sub);
            line-height: 1.65;
            margin-bottom: 14px;
            flex: 1;
        }

        .rank-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 12px;
            border-top: 1px solid rgba(82, 139, 255, 0.12);
        }

        .rank-card .live-time {
            font-size: 0.8rem;
            color: var(--text-mute);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .rank-card .live-time .dot-live {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #34D399;
            box-shadow: 0 0 8px rgba(52, 211, 153, 0.6);
            animation: pulse-dot 1.8s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(0.75); }
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 11px;
            font-weight: 600;
            font-size: 0.92rem;
            letter-spacing: 0.3px;
            transition: all 0.25s ease;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .btn-glow {
            background: linear-gradient(135deg, #38BDF8 0%, #818CF8 100%);
            color: #070B14;
            box-shadow: var(--glow-cyan);
            border: none;
        }

        .btn-glow:hover {
            box-shadow: var(--glow-cyan-strong);
            transform: translateY(-2px) scale(1.01);
            color: #070B14;
            opacity: 0.95;
        }

        .btn-glow:active {
            transform: translateY(0) scale(0.98);
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.35);
        }

        .btn-outline {
            background: transparent;
            border-color: var(--border-glass);
            color: var(--text-sub);
        }

        .btn-outline:hover {
            border-color: var(--cyan);
            color: var(--cyan);
            background: rgba(56, 189, 248, 0.06);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 7px 16px;
            font-size: 0.82rem;
            border-radius: 9px;
        }

        /* Horizontal list */
        .h-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .h-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 18px;
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: 14px;
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
        }

        .h-item:hover {
            border-color: rgba(56, 189, 248, 0.35);
            background: var(--card-bg-hover);
            transform: translateY(-2px);
        }

        .h-item .h-cover {
            width: 96px;
            height: 64px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
            background: #0A1228;
        }

        .h-item .h-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

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

        .h-item .h-title {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
            line-height: 1.35;
        }

        .h-item .h-meta {
            font-size: 0.82rem;
            color: var(--text-mute);
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .h-item .h-meta .badge-tag {
            padding: 2px 8px;
            border-radius: 6px;
            background: rgba(129, 140, 248, 0.12);
            border: 1px solid rgba(129, 140, 248, 0.25);
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--purple);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.22);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: border-color 0.25s ease, background 0.25s ease;
        }

        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
            background: var(--card-bg-hover);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px 20px;
            cursor: pointer;
            user-select: none;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-main);
            line-height: 1.45;
        }

        .faq-question .faq-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.22);
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--highlight);
            flex-shrink: 0;
        }

        .faq-question .faq-toggle-icon {
            margin-left: auto;
            color: var(--text-mute);
            font-size: 1.1rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-toggle-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
            color: var(--text-sub);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        /* Compare table */
        .compare-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.92rem;
        }

        .compare-table th {
            text-align: left;
            padding: 12px 16px;
            font-weight: 600;
            color: var(--text-sub);
            border-bottom: 1px solid rgba(82, 139, 255, 0.2);
        }

        .compare-table td {
            text-align: left;
            padding: 12px 16px;
            color: var(--text-sub);
            border-bottom: 1px solid rgba(82, 139, 255, 0.12);
            line-height: 1.55;
        }

        .compare-table td:first-child {
            color: var(--text-main);
            font-weight: 500;
            white-space: nowrap;
        }

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

        .compare-table .val-highlight {
            color: var(--highlight);
            font-weight: 700;
            font-variant-numeric: tabular-nums;
        }

        /* CTA form */
        .cta-banner {
            position: relative;
            background: linear-gradient(135deg, #0A1228 0%, #0D1B3A 50%, #0A1228 100%);
            border: 1px solid rgba(82, 139, 255, 0.22);
            border-radius: var(--radius-card);
            padding: 44px 40px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 80% 30%, rgba(56, 189, 248, 0.12), transparent 55%),
                radial-gradient(ellipse at 20% 70%, rgba(129, 140, 248, 0.10), transparent 50%);
            pointer-events: none;
        }

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

        .cta-banner h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .cta-banner p {
            font-size: 0.95rem;
            color: var(--text-sub);
            line-height: 1.65;
            margin-bottom: 22px;
            max-width: 520px;
        }

        .inline-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: center;
        }

        .inline-form input,
        .inline-form select {
            padding: 11px 16px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            color: var(--text-main);
            font-size: 0.92rem;
            min-width: 180px;
            transition: border-color 0.25s ease, background 0.25s ease;
        }

        .inline-form input:focus,
        .inline-form select:focus {
            outline: none;
            border-color: var(--cyan);
            background: rgba(56, 189, 248, 0.08);
            box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
        }

        .inline-form input::placeholder {
            color: var(--text-mute);
        }

        .inline-form select {
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%237E8CA8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 36px;
        }

        .inline-form select option {
            background: #0A1228;
            color: var(--text-main);
        }

        /* Section subtext */
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 680px;
        }

        /* Two column layout */
        .two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: start;
        }

        /* Footer */
        .site-footer {
            background: #050912;
            border-top: 1px solid rgba(82, 139, 255, 0.12);
            padding: 56px 0 28px;
            color: var(--text-sub);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .footer-brand:hover {
            color: var(--cyan);
        }

        .footer-desc {
            font-size: 0.88rem;
            color: var(--text-mute);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h5 {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

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

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

        .footer-col a {
            font-size: 0.88rem;
            color: var(--text-sub);
            transition: color 0.2s ease;
        }

        .footer-col a:hover {
            color: var(--cyan);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid rgba(82, 139, 255, 0.12);
            font-size: 0.82rem;
            color: var(--text-mute);
        }

        .footer-bottom a {
            color: var(--text-sub);
            transition: color 0.2s ease;
        }

        .footer-bottom a:hover {
            color: var(--cyan);
        }

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

            .two-col {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

            .cat-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-group {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }

            .site-header .container {
                gap: 12px;
            }

            .logo-center {
                flex: 1;
                text-align: center;
                padding: 0;
            }

            .logo-link {
                font-size: 1.15rem;
                justify-content: center;
            }

            .section {
                padding: 52px 0;
            }

            .cat-hero {
                padding: 48px 0 36px;
            }

            .cat-hero h1 {
                font-size: 1.8rem;
            }

            .cat-hero p {
                font-size: 0.95rem;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .inline-form {
                flex-direction: column;
                width: 100%;
            }

            .inline-form input,
            .inline-form select {
                width: 100%;
                min-width: 0;
            }

            .inline-form .btn {
                width: 100%;
            }

            .h-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .h-item .h-cover {
                width: 100%;
                height: 120px;
            }

            .metric-pills {
                gap: 8px;
            }

            .cta-banner {
                padding: 28px 20px;
            }
        }

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

            .site-header .container {
                min-height: 60px;
            }

            .logo-link {
                font-size: 1.05rem;
            }

            .cat-hero h1 {
                font-size: 1.55rem;
            }

            .section-header h2 {
                font-size: 1.45rem;
            }

            .rank-card .card-title {
                font-size: 1rem;
            }

            .compare-card {
                padding: 18px;
                overflow-x: auto;
            }

            .compare-table {
                font-size: 0.82rem;
            }

            .compare-table th,
            .compare-table td {
                padding: 8px 10px;
            }
        }

/* roulang page: category6 */
:root {
            --bg-base: #070B14;
            --bg-surface: #0A1228;
            --cyan: #38BDF8;
            --purple: #818CF8;
            --highlight: #22D3EE;
            --text-main: #F4F7FF;
            --text-sub: #B8C4DE;
            --text-mute: #7E8CA8;
            --border-glass: rgba(82, 139, 255, 0.18);
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-bg-hover: rgba(255, 255, 255, 0.12);
            --radius-card: 18px;
            --shadow-card: 0 12px 28px rgba(0, 0, 0, 0.40);
            --glow-cyan: 0 0 16px rgba(56, 189, 248, 0.55);
            --glow-cyan-strong: 0 0 28px rgba(56, 189, 248, 0.75);
            --section-gap: 96px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.7;
            font-weight: 400;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, opacity 0.2s ease;
        }
        a:hover { color: var(--cyan); }

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

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }

        button { cursor: pointer; border: none; background: none; }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--highlight);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 11, 20, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 68px;
        }
        .nav-group {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }
        .nav-group.nav-left { justify-content: flex-start; }
        .nav-group.nav-right { justify-content: flex-end; }
        .logo-center { flex-shrink: 0; padding: 0 8px; }
        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-link:hover { color: var(--cyan); }
        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--highlight);
            box-shadow: var(--glow-cyan);
            display: inline-block;
            flex-shrink: 0;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 13px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 10px;
            letter-spacing: 0.3px;
            white-space: nowrap;
            transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
        }
        .nav-link:hover {
            color: var(--text-main);
            background: rgba(56, 189, 248, 0.08);
            transform: translateY(-1px);
        }
        .nav-link.active {
            color: var(--highlight);
            background: rgba(56, 189, 248, 0.10);
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            color: var(--text-main);
            font-size: 1.4rem;
            transition: background 0.2s ease;
        }
        .menu-toggle:hover { background: var(--card-bg-hover); }
        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 24px 20px;
            background: rgba(7, 11, 20, 0.95);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
        }
        .mobile-nav.open { display: flex; }
        .mobile-nav .nav-link {
            padding: 12px 14px;
            font-size: 1rem;
            width: 100%;
        }

        /* Sections */
        .section {
            padding: var(--section-gap) 0;
            position: relative;
        }
        .section-alt {
            background: rgba(10, 18, 40, 0.55);
            border-top: 1px solid rgba(82, 139, 255, 0.10);
            border-bottom: 1px solid rgba(82, 139, 255, 0.10);
        }
        .section-header {
            margin-bottom: 36px;
        }
        .section-header .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--highlight);
            margin-bottom: 10px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.3px;
            line-height: 1.3;
        }
        .section-header .section-sub {
            font-size: 1.06rem;
            color: var(--text-sub);
            margin-top: 12px;
            max-width: 720px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 22px;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 12px;
            letter-spacing: 0.4px;
            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, #38BDF8, #818CF8);
            color: #ffffff;
            box-shadow: var(--glow-cyan);
            border: 1px solid rgba(56, 189, 248, 0.45);
        }
        .btn-primary:hover {
            box-shadow: var(--glow-cyan-strong);
            transform: translateY(-2px);
            color: #ffffff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.40);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            color: var(--text-sub);
            box-shadow: none;
        }
        .btn-ghost:hover {
            background: rgba(56, 189, 248, 0.10);
            border-color: rgba(56, 189, 248, 0.35);
            color: var(--text-main);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.86rem;
            border-radius: 10px;
        }

        /* Badge / Tag */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 4px 10px;
            font-size: 0.76rem;
            font-weight: 600;
            letter-spacing: 0.4px;
            border-radius: 999px;
            border: 1px solid rgba(56, 189, 248, 0.25);
            background: rgba(56, 189, 248, 0.08);
            color: var(--highlight);
            white-space: nowrap;
        }
        .badge-purple {
            border-color: rgba(129, 140, 248, 0.28);
            background: rgba(129, 140, 248, 0.09);
            color: #A5B4FC;
        }
        .badge-muted {
            border-color: rgba(184, 196, 222, 0.18);
            background: rgba(184, 196, 222, 0.06);
            color: var(--text-mute);
        }

        /* H1 Area for category page */
        .cat-hero {
            position: relative;
            padding: 64px 0 48px;
            background: linear-gradient(135deg, #070B14 0%, #0A1228 50%, #0D1B3A 100%);
            overflow: hidden;
            border-bottom: 1px solid rgba(82, 139, 255, 0.10);
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 15% 25%, rgba(56, 189, 248, 0.12), transparent 55%),
                radial-gradient(ellipse at 85% 60%, rgba(129, 140, 248, 0.10), transparent 50%),
                radial-gradient(ellipse at 50% 50%, rgba(34, 211, 238, 0.05), transparent 60%);
            pointer-events: none;
        }
        .cat-hero .container {
            position: relative;
            z-index: 2;
        }
        .cat-hero h1 {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
            line-height: 1.28;
            max-width: 860px;
        }
        .cat-hero .cat-hero-desc {
            font-size: 1.1rem;
            color: var(--text-sub);
            margin-top: 16px;
            max-width: 720px;
            line-height: 1.8;
        }

        /* Stat capsules */
        .stat-capsules {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 28px;
        }
        .stat-capsule {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 10px 18px;
            border-radius: 999px;
            border: 1px solid rgba(82, 139, 255, 0.20);
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            font-size: 0.92rem;
            color: var(--text-sub);
            white-space: nowrap;
        }
        .stat-capsule strong {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--highlight);
            font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
            text-shadow: 0 0 12px rgba(56, 189, 248, 0.50);
        }

        /* Card grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-grid.two-col {
            grid-template-columns: repeat(2, 1fr);
        }
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            overflow: hidden;
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
        }
        .card:hover {
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.35);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.52);
            background: var(--card-bg-hover);
        }
        .card-cover {
            aspect-ratio: 16/9;
            background: #0A1228;
            position: relative;
            overflow: hidden;
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card:hover .card-cover img {
            transform: scale(1.04);
        }
        .card-cover .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }
        .card-cover .duration {
            position: absolute;
            bottom: 10px;
            right: 10px;
            z-index: 2;
            background: rgba(7, 11, 20, 0.78);
            color: #F4F7FF;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 3px 9px;
            border-radius: 8px;
            letter-spacing: 0.3px;
        }
        .card-body {
            padding: 20px 22px 22px;
        }
        .card-body h3 {
            font-size: 1.18rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .card-body p {
            font-size: 0.94rem;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .card-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }
        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            flex-wrap: wrap;
            padding-top: 12px;
            border-top: 1px solid rgba(82, 139, 255, 0.12);
        }

        /* List cards */
        .list-card {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            padding: 18px;
            transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }
        .list-card:hover {
            transform: translateY(-2px);
            border-color: rgba(56, 189, 248, 0.35);
            background: var(--card-bg-hover);
        }
        .list-card-cover {
            width: 160px;
            flex-shrink: 0;
            aspect-ratio: 16/10;
            border-radius: 12px;
            overflow: hidden;
            background: #0A1228;
        }
        .list-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .list-card-content {
            flex: 1;
            min-width: 0;
        }
        .list-card-content h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: 6px;
        }
        .list-card-content p {
            font-size: 0.9rem;
            color: var(--text-sub);
            line-height: 1.65;
            margin-bottom: 10px;
        }

        /* FAQ / Q&A */
        .qa-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .qa-item {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: 16px;
            padding: 18px 20px;
            transition: background 0.2s ease, border-color 0.2s ease;
        }
        .qa-item:hover {
            background: var(--card-bg-hover);
            border-color: rgba(56, 189, 248, 0.30);
        }
        .qa-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .qa-item h4 .qa-num {
            color: var(--highlight);
            font-size: 0.9rem;
            font-weight: 700;
            font-family: 'SFMono-Regular', Consolas, monospace;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .qa-item p {
            font-size: 0.92rem;
            color: var(--text-sub);
            line-height: 1.7;
            padding-left: 26px;
        }

        /* Compare table */
        .compare-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            overflow: hidden;
        }
        .compare-card table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.92rem;
        }
        .compare-card th,
        .compare-card td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid rgba(82, 139, 255, 0.10);
        }
        .compare-card th {
            background: rgba(56, 189, 248, 0.07);
            color: var(--highlight);
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.5px;
        }
        .compare-card td {
            color: var(--text-sub);
        }
        .compare-card td:first-child {
            color: var(--text-main);
            font-weight: 600;
        }
        .compare-card tr:last-child th,
        .compare-card tr:last-child td {
            border-bottom: none;
        }
        .compare-card tr:hover td {
            background: rgba(56, 189, 248, 0.04);
        }

        /* Form */
        .form-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            padding: 32px 28px;
        }
        .form-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .form-card p {
            font-size: 0.96rem;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 22px;
        }
        .form-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 16px;
        }
        .form-row .field {
            flex: 1;
            min-width: 180px;
        }
        .form-row .field label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-sub);
            margin-bottom: 6px;
            letter-spacing: 0.4px;
        }
        .form-input {
            width: 100%;
            padding: 12px 16px;
            background: rgba(7, 11, 20, 0.65);
            border: 1px solid rgba(82, 139, 255, 0.22);
            border-radius: 10px;
            color: var(--text-main);
            font-size: 0.95rem;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .form-input:focus {
            border-color: var(--highlight);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
            outline: none;
        }
        .form-input::placeholder {
            color: var(--text-mute);
        }

        /* Aside / side strip */
        .aside-strip {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 28px;
            align-items: center;
        }
        .aside-strip .aside-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-glass);
            aspect-ratio: 16/10;
            background: #0A1228;
        }
        .aside-strip .aside-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .aside-strip .aside-info h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .aside-strip .aside-info p {
            font-size: 0.95rem;
            color: var(--text-sub);
            line-height: 1.75;
        }

        /* Footer */
        .site-footer {
            background: #05080F;
            border-top: 1px solid rgba(82, 139, 255, 0.14);
            padding: 56px 0 24px;
            margin-top: 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .footer-brand:hover { color: var(--cyan); }
        .footer-desc {
            font-size: 0.9rem;
            color: var(--text-mute);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-mute);
            transition: color 0.2s ease;
        }
        .footer-col ul li a:hover { color: var(--cyan); }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(82, 139, 255, 0.10);
            font-size: 0.84rem;
            color: var(--text-mute);
        }
        .footer-bottom a {
            color: var(--text-mute);
            transition: color 0.2s ease;
        }
        .footer-bottom a:hover { color: var(--cyan); }

        /* Responsive */
        @media (max-width: 1024px) {
            :root { --section-gap: 72px; }
            .cat-hero h1 { font-size: 2.2rem; }
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .aside-strip { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --section-gap: 56px; }
            .nav-group { display: none; }
            .menu-toggle { display: flex; }
            .site-header .container { justify-content: space-between; min-height: 60px; }
            .logo-center { margin-right: auto; }
            .cat-hero { padding: 48px 0 36px; }
            .cat-hero h1 { font-size: 1.8rem; }
            .cat-hero .cat-hero-desc { font-size: 1rem; }
            .section-header h2 { font-size: 1.6rem; }
            .card-grid { grid-template-columns: 1fr; }
            .card-grid.two-col { grid-template-columns: 1fr; }
            .list-card { flex-direction: column; }
            .list-card-cover { width: 100%; }
            .footer-grid { grid-template-columns: 1fr; gap: 26px; }
            .form-row .field { min-width: 100%; }
        }
        @media (max-width: 520px) {
            .cat-hero h1 { font-size: 1.5rem; }
            .stat-capsules { gap: 8px; }
            .stat-capsule { padding: 8px 14px; font-size: 0.82rem; }
            .stat-capsule strong { font-size: 1rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .container { padding-left: 16px; padding-right: 16px; }
        }

/* roulang page: category7 */
:root {
            --bg-base: #070B14;
            --bg-surface: #0A1228;
            --cyan: #38BDF8;
            --purple: #818CF8;
            --highlight: #22D3EE;
            --text-main: #F4F7FF;
            --text-sub: #B8C4DE;
            --text-mute: #7E8CA8;
            --border-glass: rgba(82, 139, 255, 0.18);
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-bg-hover: rgba(255, 255, 255, 0.12);
            --radius-card: 18px;
            --shadow-card: 0 12px 28px rgba(0, 0, 0, 0.40);
            --glow-cyan: 0 0 16px rgba(56, 189, 248, 0.55);
            --glow-cyan-strong: 0 0 28px rgba(56, 189, 248, 0.75);
            --radius-sm: 10px;
            --radius-xs: 8px;
            --space-section: 88px;
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.75;
            font-weight: 400;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, opacity 0.2s ease;
        }
        a:hover {
            color: var(--cyan);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--highlight);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 11, 20, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 68px;
        }
        .nav-group {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }
        .nav-group.nav-left {
            justify-content: flex-start;
        }
        .nav-group.nav-right {
            justify-content: flex-end;
        }
        .logo-center {
            flex-shrink: 0;
            padding: 0 8px;
        }
        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-link:hover {
            color: var(--cyan);
        }
        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--highlight);
            box-shadow: var(--glow-cyan);
            display: inline-block;
            flex-shrink: 0;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 13px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 10px;
            letter-spacing: 0.3px;
            white-space: nowrap;
            transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
        }
        .nav-link:hover {
            color: var(--text-main);
            background: rgba(56, 189, 248, 0.08);
            transform: translateY(-1px);
        }
        .nav-link.active {
            color: var(--highlight);
            background: rgba(56, 189, 248, 0.10);
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border-glass);
            background: var(--card-bg);
            color: var(--text-main);
            font-size: 1.4rem;
            transition: background 0.2s ease;
        }
        .menu-toggle:hover {
            background: var(--card-bg-hover);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 24px 20px;
            background: rgba(7, 11, 20, 0.95);
            border-bottom: 1px solid rgba(82, 139, 255, 0.14);
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav .nav-link {
            padding: 12px 14px;
            font-size: 1rem;
            width: 100%;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            color: var(--text-mute);
            flex-wrap: wrap;
            margin-bottom: 18px;
        }
        .breadcrumb a {
            color: var(--text-sub);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--cyan);
        }
        .breadcrumb .sep {
            color: var(--text-mute);
            opacity: 0.6;
        }
        .breadcrumb .current {
            color: var(--cyan);
        }

        /* Category Hero */
        .cat-hero {
            position: relative;
            padding: 64px 0 44px;
            background: linear-gradient(150deg, #070B14 0%, #0A1228 40%, #120B2E 75%, #070B14 100%);
            overflow: hidden;
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 25% 30%, rgba(56, 189, 248, 0.12), transparent 50%),
                radial-gradient(ellipse at 75% 65%, rgba(129, 140, 248, 0.14), transparent 55%),
                radial-gradient(ellipse at 55% 20%, rgba(34, 211, 238, 0.05), transparent 40%);
            pointer-events: none;
        }
        .cat-hero .container {
            position: relative;
            z-index: 2;
        }
        .cat-hero-row {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 36px;
            align-items: end;
        }
        .cat-hero h1 {
            font-size: clamp(1.9rem, 3.8vw, 2.9rem);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .cat-hero h1 .accent {
            color: var(--highlight);
            text-shadow: var(--glow-cyan);
        }
        .cat-hero .lead {
            font-size: 1.06rem;
            color: var(--text-sub);
            max-width: 560px;
            line-height: 1.85;
        }
        .trust-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 14px 22px;
            padding: 18px 20px;
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
        }
        .trust-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-sub);
            white-space: nowrap;
        }
        .trust-item .check {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.15);
            border: 1px solid rgba(34, 211, 238, 0.4);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: var(--highlight);
            flex-shrink: 0;
        }

        /* Metric capsules */
        .metric-band {
            padding: 32px 0 8px;
        }
        .metric-band .container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .metric-capsule {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 20px 22px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            display: flex;
            align-items: center;
            gap: 16px;
            box-shadow: var(--shadow-card);
            transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s ease;
        }
        .metric-capsule:hover {
            border-color: rgba(56, 189, 248, 0.45);
            background: var(--card-bg-hover);
            transform: translateY(-2px);
        }
        .metric-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        .metric-info .metric-value {
            font-size: 1.55rem;
            font-weight: 700;
            font-family: 'SF Mono', 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
            color: var(--highlight);
            line-height: 1.2;
            text-shadow: var(--glow-cyan);
            margin-bottom: 2px;
        }
        .metric-info .metric-label {
            font-size: 0.85rem;
            color: var(--text-mute);
            letter-spacing: 0.3px;
        }

        /* Section common */
        .section-block {
            padding: var(--space-section) 0;
        }
        .section-block.alt-bg {
            background: var(--bg-surface);
            border-top: 1px solid rgba(82, 139, 255, 0.08);
            border-bottom: 1px solid rgba(82, 139, 255, 0.08);
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .section-head h2 {
            font-size: clamp(1.5rem, 2.6vw, 2rem);
            font-weight: 700;
            letter-spacing: 0.4px;
            color: var(--text-main);
            line-height: 1.35;
        }
        .section-head .sub-text {
            font-size: 0.95rem;
            color: var(--text-sub);
            max-width: 480px;
            line-height: 1.7;
        }
        .section-head .action-link {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--cyan);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.2s ease, gap 0.2s ease;
        }
        .section-head .action-link:hover {
            color: var(--highlight);
            gap: 10px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 22px;
            border-radius: 12px;
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            white-space: nowrap;
            transition: all 0.28s ease;
            border: 1px solid transparent;
            cursor: pointer;
        }
        .btn-glow {
            background: linear-gradient(135deg, #38BDF8 0%, #818CF8 100%);
            color: #fff;
            box-shadow: var(--glow-cyan);
            border-color: rgba(56, 189, 248, 0.35);
        }
        .btn-glow:hover {
            box-shadow: var(--glow-cyan-strong);
            transform: translateY(-2px) scale(1.02);
            background: linear-gradient(135deg, #42C6FA 0%, #93A0FB 100%);
            color: #fff;
        }
        .btn-glow:active {
            transform: translateY(0) scale(0.98);
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.4);
        }
        .btn-outline {
            background: rgba(56, 189, 248, 0.06);
            border-color: rgba(56, 189, 248, 0.3);
            color: var(--cyan);
        }
        .btn-outline:hover {
            background: rgba(56, 189, 248, 0.14);
            border-color: rgba(56, 189, 248, 0.55);
            color: var(--text-main);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
            border-radius: 10px;
        }

        /* Live card grid */
        .live-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .live-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            overflow: hidden;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .live-card:hover {
            border-color: rgba(56, 189, 248, 0.5);
            transform: translateY(-4px);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
        }
        .live-card .cover-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #0D1528;
        }
        .live-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .live-card:hover .cover-wrap img {
            transform: scale(1.05);
        }
        .live-card .badge-top {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(7, 11, 20, 0.75);
            border: 1px solid rgba(56, 189, 248, 0.35);
            color: var(--highlight);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            letter-spacing: 0.4px;
        }
        .live-card .badge-replay {
            background: rgba(129, 140, 248, 0.2);
            border-color: rgba(129, 140, 248, 0.4);
            color: #B8C4FF;
        }
        .live-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .live-card .card-title {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.45;
            letter-spacing: 0.2px;
        }
        .live-card .card-desc {
            font-size: 0.88rem;
            color: var(--text-sub);
            line-height: 1.7;
            flex: 1;
        }
        .live-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 0.82rem;
            color: var(--text-mute);
        }
        .live-card .card-meta .heat {
            color: var(--highlight);
            font-weight: 600;
            font-family: 'SF Mono', 'JetBrains Mono', 'Fira Code', monospace;
        }
        .live-card .card-meta .tag {
            padding: 3px 10px;
            border-radius: 14px;
            background: rgba(129, 140, 248, 0.12);
            border: 1px solid rgba(129, 140, 248, 0.22);
            color: #B8C4FF;
            font-size: 0.72rem;
            font-weight: 500;
        }
        .live-card .card-actions {
            display: flex;
            gap: 10px;
            margin-top: 4px;
            flex-wrap: wrap;
        }

        /* Horizontal recommended list */
        .recommend-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .recommend-item {
            display: flex;
            gap: 16px;
            align-items: center;
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 16px 18px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: border-color 0.3s ease, transform 0.3s ease, background 0.3s ease;
        }
        .recommend-item:hover {
            border-color: rgba(56, 189, 248, 0.5);
            transform: translateX(4px);
            background: var(--card-bg-hover);
        }
        .recommend-item .rec-cover {
            width: 130px;
            aspect-ratio: 16/10;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
            background: #0D1528;
        }
        .recommend-item .rec-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .recommend-item .rec-info {
            flex: 1;
            min-width: 0;
        }
        .recommend-item .rec-title {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .recommend-item .rec-desc {
            font-size: 0.85rem;
            color: var(--text-sub);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .recommend-item .rec-meta {
            font-size: 0.78rem;
            color: var(--text-mute);
            margin-top: 6px;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        /* Compare table / cards */
        .compare-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .compare-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 26px 28px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
        }
        .compare-card.highlight-card {
            border-color: rgba(56, 189, 248, 0.45);
            background: rgba(56, 189, 248, 0.05);
        }
        .compare-card .compare-title {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .compare-card .compare-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid rgba(82, 139, 255, 0.1);
            font-size: 0.9rem;
            color: var(--text-sub);
        }
        .compare-card .compare-row:last-child {
            border-bottom: none;
        }
        .compare-card .compare-row .label {
            color: var(--text-mute);
        }
        .compare-card .compare-row .value {
            color: var(--text-main);
            font-weight: 600;
            font-family: 'SF Mono', 'JetBrains Mono', 'Fira Code', monospace;
        }
        .compare-card .compare-row .value.good {
            color: var(--highlight);
        }

        /* Streamer sidebar strip */
        .streamer-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .streamer-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 18px;
            text-align: center;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: border-color 0.3s ease, transform 0.3s ease;
        }
        .streamer-card:hover {
            border-color: rgba(56, 189, 248, 0.5);
            transform: translateY(-3px);
        }
        .streamer-card .avatar {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            margin: 0 auto 12px;
            overflow: hidden;
            border: 2px solid rgba(56, 189, 248, 0.4);
            background: #0D1528;
        }
        .streamer-card .avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .streamer-card .streamer-name {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .streamer-card .streamer-tag {
            font-size: 0.78rem;
            color: var(--text-mute);
        }

        /* Q&A accordion */
        .qa-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .qa-item {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            overflow: hidden;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: border-color 0.3s ease, background 0.3s ease;
        }
        .qa-item:hover {
            border-color: rgba(56, 189, 248, 0.35);
            background: var(--card-bg-hover);
        }
        .qa-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-main);
            letter-spacing: 0.2px;
            transition: color 0.2s ease;
            user-select: none;
        }
        .qa-question:hover {
            color: var(--cyan);
        }
        .qa-question .qa-index {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.22);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--highlight);
            flex-shrink: 0;
            font-family: 'SF Mono', 'JetBrains Mono', 'Fira Code', monospace;
        }
        .qa-question .qa-toggle {
            margin-left: auto;
            font-size: 1.2rem;
            color: var(--text-mute);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .qa-item.open .qa-toggle {
            transform: rotate(45deg);
            color: var(--cyan);
        }
        .qa-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px;
            font-size: 0.9rem;
            color: var(--text-sub);
            line-height: 1.75;
        }
        .qa-item.open .qa-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* Mini form CTA */
        .cta-form-block {
            background: linear-gradient(135deg, rgba(56, 189, 248, 0.06) 0%, rgba(129, 140, 248, 0.06) 50%, rgba(7, 11, 20, 0.4) 100%);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
        }
        .cta-form-block .form-title {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .cta-form-block .form-desc {
            font-size: 0.92rem;
            color: var(--text-sub);
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .form-row {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .form-group {
            flex: 1;
            min-width: 180px;
        }
        .form-group label {
            display: block;
            font-size: 0.82rem;
            color: var(--text-sub);
            margin-bottom: 6px;
            letter-spacing: 0.3px;
        }
        .form-group input,
        .form-group select {
            width: 100%;
            padding: 11px 14px;
            border-radius: 10px;
            background: rgba(7, 11, 20, 0.7);
            border: 1px solid rgba(82, 139, 255, 0.22);
            color: var(--text-main);
            font-size: 0.92rem;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .form-group input:focus,
        .form-group select:focus {
            border-color: var(--highlight);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.25);
            outline: none;
        }
        .form-group input::placeholder {
            color: var(--text-mute);
        }

        /* Footer */
        .site-footer {
            background: #05080F;
            border-top: 1px solid rgba(82, 139, 255, 0.12);
            padding: 56px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
        }
        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-main);
            margin-bottom: 14px;
        }
        .footer-desc {
            font-size: 0.88rem;
            color: var(--text-mute);
            line-height: 1.7;
            max-width: 340px;
        }
        .footer-col h5 {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 0.86rem;
            color: var(--text-sub);
            transition: color 0.2s ease;
        }
        .footer-col ul li a:hover {
            color: var(--cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(82, 139, 255, 0.1);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.82rem;
            color: var(--text-mute);
        }
        .footer-bottom a {
            color: var(--text-sub);
        }
        .footer-bottom a:hover {
            color: var(--cyan);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .cat-hero-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .live-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .streamer-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-group {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .site-header .container {
                justify-content: space-between;
            }
            .logo-center {
                margin-right: auto;
            }
            .compare-wrap {
                grid-template-columns: 1fr;
            }
            .metric-band .container {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .section-block {
                padding: 56px 0;
            }
            .form-row {
                flex-direction: column;
            }
            .form-group {
                min-width: 100%;
            }
            .cta-form-block {
                padding: 28px 22px;
            }
        }
        @media (max-width: 640px) {
            .live-grid {
                grid-template-columns: 1fr;
            }
            .streamer-strip {
                grid-template-columns: 1fr;
            }
            .recommend-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .recommend-item .rec-cover {
                width: 100%;
                aspect-ratio: 16/9;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .cat-hero {
                padding: 48px 0 32px;
            }
            .trust-strip {
                gap: 10px;
                padding: 14px 16px;
            }
            .trust-item {
                font-size: 0.8rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }