/* roulang page: index */
:root {
            --bg-primary: #0A1A2F;
            --bg-secondary: #0D1E36;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --border-glass: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(0, 198, 255, 0.45);
            --text-primary: #F0F7FF;
            --text-secondary: #B9C8DE;
            --text-muted: #8AA0BC;
            --accent-cyan: #00C6FF;
            --accent-ice: #4FD8FF;
            --accent-deep: #007BFF;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
            --shadow-glow: 0 0 20px rgba(0, 180, 255, 0.6);
            --shadow-glow-strong: 0 0 30px rgba(0, 180, 255, 0.85);
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-pill: 999px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1240px;
            --container-pad: 24px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
            background: var(--bg-primary);
            background-image: radial-gradient(ellipse at 20% 10%, rgba(0, 198, 255, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 30%, rgba(0, 123, 255, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 80%, rgba(0, 198, 255, 0.04) 0%, transparent 60%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

        a:hover {
            color: var(--accent-ice);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
            -webkit-tap-highlight-color: transparent;
        }

        button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            box-shadow: none;
        }

        :focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 6px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-primary);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: 0.01em;
        }

        h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 800;
        }

        h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
        }

        h3 {
            font-size: 1.15rem;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ---------- Container ---------- */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-pad);
            padding-right: var(--container-pad);
        }

        /* ---------- Header / Nav ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 26, 47, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            transition: background var(--transition-smooth);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 12px 0;
            min-height: 56px;
        }

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

        .brand-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.15rem;
            box-shadow: var(--shadow-glow);
            flex-shrink: 0;
        }

        .brand-logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-pill);
            padding: 6px 14px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .header-search:focus-within {
            border-color: var(--border-glow);
            box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
        }

        .header-search input {
            color: var(--text-primary);
            background: transparent;
            width: 130px;
            font-size: 0.85rem;
        }

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

        .header-search .search-icon {
            color: var(--text-muted);
            font-size: 0.9rem;
            pointer-events: none;
        }

        .btn-header {
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-header:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.08);
        }

        .btn-header-primary {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            border: none;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .btn-header-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            color: #fff;
            background: linear-gradient(135deg, var(--accent-ice), var(--accent-cyan));
            transform: translateY(-1px);
        }

        .header-channel-row {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 0 0 10px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
        }

        .header-channel-row::-webkit-scrollbar {
            height: 4px;
        }

        .header-channel-row::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.15);
            border-radius: 2px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-pill);
            white-space: nowrap;
            position: relative;
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
        }

        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-link.active {
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.12);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent-cyan);
            box-shadow: var(--shadow-glow);
        }

        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--border-glass);
            background: rgba(255, 255, 255, 0.04);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            flex-shrink: 0;
        }

        .mobile-menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .mobile-menu-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .mobile-menu-toggle.open span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }

        .mobile-menu-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 999;
            background: rgba(10, 26, 47, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 80px 24px 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }

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

        .mobile-drawer .mobile-nav-link {
            display: block;
            padding: 14px 18px;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-md);
            border: 1px solid transparent;
        }

        .mobile-drawer .mobile-nav-link:hover,
        .mobile-drawer .mobile-nav-link.active {
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.08);
            border-color: var(--border-glass);
        }

        /* ---------- Hero ---------- */
        .hero {
            position: relative;
            padding: 80px 0 70px;
            background: linear-gradient(180deg, rgba(10, 26, 47, 0.4) 0%, rgba(13, 30, 54, 0.7) 100%);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/a00d5541277e6f2a.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            z-index: 0;
        }

        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center 30%, rgba(0, 198, 255, 0.12) 0%, transparent 60%),
                linear-gradient(180deg, rgba(10, 26, 47, 0.55) 0%, rgba(13, 30, 54, 0.85) 100%);
            z-index: 1;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            margin: 0 auto;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 18px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.12);
            border: 1px solid rgba(0, 198, 255, 0.25);
            border-radius: var(--radius-pill);
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }

        .hero h1 {
            margin-bottom: 18px;
            text-shadow: 0 0 40px rgba(0, 198, 255, 0.2);
        }

        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
            margin: 0 auto 28px;
        }

        .hero-search-wrapper {
            max-width: 560px;
            margin: 0 auto 24px;
            position: relative;
        }

        .hero-search-box {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-pill);
            padding: 12px 18px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .hero-search-box:focus-within {
            border-color: var(--border-glow);
            box-shadow: 0 0 25px rgba(0, 198, 255, 0.2);
        }

        .hero-search-box .search-icon {
            color: var(--text-muted);
            font-size: 1rem;
            flex-shrink: 0;
        }

        .hero-search-box input {
            flex: 1;
            background: transparent;
            color: var(--text-primary);
            font-size: 0.95rem;
        }

        .hero-search-box input::placeholder {
            color: var(--text-muted);
        }

        .hero-search-btn {
            padding: 8px 20px;
            border-radius: var(--radius-pill);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            color: #fff;
            font-weight: 600;
            font-size: 0.85rem;
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-base);
            flex-shrink: 0;
        }

        .hero-search-btn:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
            color: #fff;
        }

        .hero-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 32px;
        }

        .hero-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            font-size: 0.82rem;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-pill);
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .hero-chip:hover {
            background: rgba(0, 198, 255, 0.1);
            border-color: rgba(0, 198, 255, 0.35);
            color: var(--accent-ice);
        }

        .hero-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            padding-top: 8px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .hero-metric {
            text-align: center;
            min-width: 90px;
        }

        .hero-metric-value {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .hero-metric-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ---------- Section base ---------- */
        .section {
            padding: 64px 0;
            position: relative;
        }

        .section-alt {
            background: rgba(13, 30, 54, 0.5);
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
        }

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

        .section-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-ice);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-header h2 {
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 720px;
        }

        /* ---------- Data metrics strip ---------- */
        .metrics-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            text-align: center;
            transition: all var(--transition-base);
        }

        .metric-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 198, 255, 0.25);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }

        .metric-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .metric-value .unit {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--accent-ice);
            margin-left: 2px;
        }

        .metric-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

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

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .feature-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: rgba(0, 198, 255, 0.2);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(0, 198, 255, 0.12);
            border: 1px solid rgba(0, 198, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 16px;
            color: var(--accent-ice);
        }

        .feature-card h3 {
            font-size: 1.05rem;
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.75;
        }

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

        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 24px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .scenario-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 198, 255, 0.25);
            transform: translateY(-3px);
        }

        .scenario-num {
            font-size: 2rem;
            font-weight: 800;
            color: rgba(0, 198, 255, 0.25);
            line-height: 1;
        }

        .scenario-card h3 {
            font-size: 1rem;
        }

        .scenario-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ---------- Screenshot/demo ---------- */
        .demo-showcase {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .demo-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            background: rgba(255, 255, 255, 0.03);
        }

        .demo-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .demo-text h2 {
            margin-bottom: 14px;
        }

        .demo-text p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }

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

        .demo-list-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .demo-list-item::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-cyan);
            box-shadow: var(--shadow-glow);
            flex-shrink: 0;
        }

        /* ---------- Success cases ---------- */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 26px 24px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: all var(--transition-base);
        }

        .case-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 198, 255, 0.22);
            box-shadow: var(--shadow-card);
        }

        .case-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .case-avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(0, 198, 255, 0.3), rgba(0, 123, 255, 0.3));
            border: 1px solid rgba(0, 198, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            color: var(--accent-ice);
            font-weight: 600;
        }

        .case-name {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
        }

        .case-tag {
            font-size: 0.7rem;
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.1);
            padding: 2px 8px;
            border-radius: var(--radius-pill);
        }

        .case-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .case-result {
            display: flex;
            gap: 16px;
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .case-result-item {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .case-result-item strong {
            color: var(--accent-ice);
            font-size: 1.1rem;
            display: block;
            font-weight: 700;
        }

        /* ---------- Pricing ---------- */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            align-items: stretch;
        }

        .pricing-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: all var(--transition-base);
            position: relative;
            display: flex;
            flex-direction: column;
        }

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

        .pricing-card.featured {
            border-color: rgba(0, 198, 255, 0.4);
            background: rgba(0, 198, 255, 0.07);
            box-shadow: 0 0 25px rgba(0, 198, 255, 0.12);
        }

        .pricing-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            color: #fff;
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            box-shadow: var(--shadow-glow);
            white-space: nowrap;
        }

        .pricing-card h3 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }

        .pricing-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .pricing-price {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .pricing-price span {
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
        }

        .pricing-features {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin: 18px 0 22px;
            flex: 1;
        }

        .pricing-feature {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-secondary);
        }

        .pricing-feature::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-cyan);
            flex-shrink: 0;
        }

        .btn-pricing {
            display: block;
            text-align: center;
            padding: 12px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            transition: all var(--transition-base);
        }

        .btn-pricing:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.08);
        }

        .btn-pricing-featured {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            border: none;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .btn-pricing-featured:hover {
            box-shadow: var(--shadow-glow-strong);
            color: #fff;
            transform: translateY(-2px);
        }

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

        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 24px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .testimonial-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 198, 255, 0.2);
            box-shadow: var(--shadow-card);
        }

        .testimonial-stars {
            color: var(--accent-ice);
            font-size: 0.85rem;
            letter-spacing: 2px;
        }

        .testimonial-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .testimonial-avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(0, 198, 255, 0.2);
            border: 1px solid rgba(0, 198, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: var(--accent-ice);
            font-weight: 600;
        }

        .testimonial-name {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-primary);
        }

        .testimonial-role {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        /* ---------- Reputation stats ---------- */
        .reputation-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .reputation-item {
            text-align: center;
            padding: 20px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-base);
        }

        .reputation-item:hover {
            background: rgba(0, 198, 255, 0.06);
            border-color: rgba(0, 198, 255, 0.2);
        }

        .reputation-value {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-ice);
            line-height: 1.2;
        }

        .reputation-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

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

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 198, 255, 0.2);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }

        .news-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: rgba(0, 198, 255, 0.06);
        }

        .news-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

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

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

        .news-tag {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.1);
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            margin-bottom: 10px;
            width: fit-content;
        }

        .news-card h3 {
            font-size: 0.95rem;
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .news-card p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            margin-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.72rem;
            color: var(--text-muted);
        }

        .news-read {
            font-size: 0.78rem;
            color: var(--accent-ice);
            font-weight: 600;
            cursor: pointer;
            transition: color var(--transition-base);
        }

        .news-read:hover {
            color: var(--text-primary);
        }

        /* ---------- Brand intro ---------- */
        .brand-intro {
            display: grid;
            grid-template-columns: 1fr 1.4fr;
            gap: 36px;
            align-items: start;
        }

        .brand-intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
        }

        .brand-intro-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .brand-intro-text h2 {
            margin-bottom: 16px;
        }

        .brand-intro-text p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 12px;
        }

        /* ---------- Safety section ---------- */
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .safety-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            display: flex;
            gap: 14px;
            align-items: flex-start;
            transition: all var(--transition-base);
        }

        .safety-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 198, 255, 0.2);
        }

        .safety-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(0, 198, 255, 0.12);
            border: 1px solid rgba(0, 198, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: var(--accent-ice);
            flex-shrink: 0;
        }

        .safety-card h3 {
            font-size: 0.95rem;
            margin-bottom: 6px;
        }

        .safety-card p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ---------- FAQ ---------- */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: rgba(0, 198, 255, 0.2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-primary);
            transition: color var(--transition-base);
            width: 100%;
            text-align: left;
        }

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

        .faq-toggle {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(0, 198, 255, 0.1);
            border: 1px solid rgba(0, 198, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--accent-ice);
            flex-shrink: 0;
            transition: transform var(--transition-base);
        }

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

        .faq-answer {
            display: none;
            padding: 0 20px 18px;
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.75;
        }

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

        /* ---------- Community entry ---------- */
        .community-entry {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 28px;
            align-items: center;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 32px 30px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }

        .community-entry h2 {
            margin-bottom: 12px;
        }

        .community-entry p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 18px;
        }

        .community-entry-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-glass);
        }

        .community-entry-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .btn-primary {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-base);
            text-align: center;
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-secondary {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-glass);
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-base);
            text-align: center;
        }

        .btn-secondary:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.06);
        }

        /* ---------- Vertical cards (竖屏种草) ---------- */
        .vertical-scroll {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .vertical-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .vertical-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 198, 255, 0.25);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }

        .vertical-image {
            aspect-ratio: 3/4;
            overflow: hidden;
            background: rgba(0, 198, 255, 0.06);
        }

        .vertical-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

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

        .vertical-body {
            padding: 16px 18px 18px;
        }

        .vertical-body h3 {
            font-size: 0.9rem;
            margin-bottom: 6px;
            line-height: 1.5;
        }

        .vertical-body p {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ---------- CTA section ---------- */
        .cta-wrapper {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            text-align: center;
            max-width: 820px;
            margin: 0 auto;
            position: relative;
            overflow: hidden;
        }

        .cta-wrapper::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(ellipse at center, rgba(0, 198, 255, 0.1) 0%, transparent 50%);
            pointer-events: none;
        }

        .cta-wrapper h2 {
            margin-bottom: 14px;
            position: relative;
        }

        .cta-wrapper p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 24px;
            position: relative;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
            position: relative;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

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

        .cta-input:focus {
            border-color: var(--border-glow);
            box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
        }

        /* ---------- Risk notice ---------- */
        .risk-notice {
            background: rgba(255, 200, 0, 0.05);
            border: 1px solid rgba(255, 200, 0, 0.15);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }

        .risk-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 200, 0, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
        }

        .risk-notice p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: #081626;
            border-top: 1px solid var(--border-glass);
            padding: 48px 0 28px;
            margin-top: 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand .brand-logo-text {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-top: 8px;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col a {
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: color var(--transition-base);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            text-align: center;
            font-size: 0.75rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

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

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

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

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

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

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

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

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

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

        @media (max-width: 768px) {
            :root {
                --container-pad: 16px;
            }

            .header-search {
                display: none;
            }

            .mobile-menu-toggle {
                display: flex;
            }

            .header-channel-row {
                display: none;
            }

            .header-actions .btn-header {
                display: none;
            }

            .header-actions .btn-header-primary {
                display: inline-block;
                padding: 8px 14px;
                font-size: 0.8rem;
            }

            .header-brand-row {
                min-height: 54px;
                padding: 10px 0;
            }

            .hero {
                padding: 50px 0 50px;
            }

            .hero-metrics {
                gap: 10px;
            }

            .hero-metric {
                min-width: 70px;
            }

            .hero-metric-value {
                font-size: 1.3rem;
            }

            .section {
                padding: 44px 0;
            }

            .feature-grid,
            .scenario-grid,
            .testimonial-grid,
            .news-grid,
            .pricing-grid,
            .cases-grid,
            .safety-grid,
            .vertical-scroll {
                grid-template-columns: 1fr;
            }

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

            .hero-search-box {
                flex-wrap: wrap;
                padding: 10px 14px;
            }

            .hero-search-btn {
                width: 100%;
                padding: 10px;
            }

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

            .cta-input {
                width: 100%;
            }

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

        @media (max-width: 520px) {
            .metrics-strip,
            .reputation-grid {
                grid-template-columns: 1fr;
            }

            .hero-chips {
                gap: 6px;
            }

            .hero-chip {
                padding: 5px 12px;
                font-size: 0.75rem;
            }

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

/* roulang page: category1 */
:root {
  --bg-primary: #0A1A2F;
  --bg-secondary: #0D1E36;
  --bg-card: rgba(255, 255, 255, 0.06);
  --bg-card-hover: rgba(255, 255, 255, 0.1);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 198, 255, 0.45);
  --text-primary: #F0F7FF;
  --text-secondary: #B9C8DE;
  --text-muted: #8AA0BC;
  --accent-cyan: #00C6FF;
  --accent-ice: #4FD8FF;
  --accent-deep: #007BFF;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(0, 180, 255, 0.6);
  --shadow-glow-strong: 0 0 30px rgba(0, 180, 255, 0.85);
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --container-max: 1240px;
  --container-pad: 24px;
}
:root {
  --container-pad: 16px;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  background: var(--bg-primary);
  background-image: radial-gradient(ellipse at 20% 10%, rgba(0, 198, 255, 0.08) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 30%, rgba(0, 123, 255, 0.06) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 80%, rgba(0, 198, 255, 0.04) 0%, transparent 60%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}
a:hover {
  color: var(--accent-ice);
}
button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  outline: none;
  border: none;
  background: none;
}
button {
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}
/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 26, 47, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-glass);
  transition: background var(--transition-smooth);
}
.header-brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  min-height: 56px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: var(--shadow-glow);
  flex-shrink: 0;
}
.brand-logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.header-search:focus-within {
  border-color: var(--border-glow);
  box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
}
.header-search input {
  color: var(--text-primary);
  background: transparent;
  width: 130px;
  font-size: 0.85rem;
}
.header-search input::placeholder {
  color: var(--text-muted);
}
.header-search .search-icon {
  color: var(--text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}
.btn-header {
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  transition: all var(--transition-base);
  background: rgba(255,255,255,0.04);
}
.btn-header:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 12px rgba(0,198,255,0.25);
  color: #fff;
}
.btn-primary-header {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
  border: none;
  color: #fff;
  box-shadow: var(--shadow-glow);
}
.btn-primary-header:hover {
  box-shadow: var(--shadow-glow-strong);
  color: #fff;
  transform: translateY(-1px);
}
.header-channel-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 0 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.header-channel-row::-webkit-scrollbar {
  display: none;
}
.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  transition: all var(--transition-base);
  position: relative;
}
.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.06);
}
.nav-link.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(0,198,255,0.18), rgba(0,123,255,0.18));
  box-shadow: inset 0 0 0 1px var(--border-glow);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 6px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0,198,255,0.8);
}
/* Main */
main {
  display: block;
  padding-bottom: 60px;
}
section {
  padding: 40px 0;
  position: relative;
}
.section-title {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.section-header {
  margin-bottom: 24px;
}
/* Category Hero */
.category-hero {
  padding: 44px 0 32px;
  background: linear-gradient(180deg, rgba(0,198,255,0.06) 0%, transparent 100%);
  border-bottom: 1px solid var(--border-glass);
}
.category-hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: center;
}
.category-hero-content h1 {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 12px;
}
.category-hero-content .hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  transition: all var(--transition-base);
  min-width: 140px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
  color: #fff;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-2px);
  color: #fff;
}
.btn-outline {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
}
.btn-outline:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 16px rgba(0,198,255,0.2);
  transform: translateY(-2px);
}
.category-hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-glass);
  min-height: 280px;
}
.category-hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}
.category-hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,26,47,0.35) 0%, rgba(10,26,47,0.75) 100%);
  pointer-events: none;
}
.hero-visual-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  z-index: 2;
  background: rgba(10,26,47,0.85);
  backdrop-filter: blur(12px);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 600;
}
/* Data Snapshot */
.data-snapshot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}
.glass-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3), 0 0 18px rgba(0,198,255,0.2);
}
.snapshot-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-ice);
  margin-bottom: 4px;
  line-height: 1.2;
}
.snapshot-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.snapshot-trend {
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.trend-up {
  color: #3DDC84;
}
.trend-flat {
  color: var(--accent-ice);
}
/* List Cards */
.card-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.content-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 0;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-smooth);
  display: flex;
  flex-direction: column;
}
.content-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: 0 14px 36px rgba(0,0,0,0.3), 0 0 22px rgba(0,198,255,0.2);
}
.card-cover {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #10233E;
}
.card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.content-card:hover .card-cover img {
  transform: scale(1.05);
}
.card-cover .card-cover-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(10,26,47,0.8);
  backdrop-filter: blur(8px);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-ice);
  border: 1px solid var(--border-glass);
}
.card-body {
  padding: 20px 20px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.5;
  transition: color var(--transition-base);
}
.content-card:hover .card-title {
  color: var(--accent-ice);
}
.card-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(0,198,255,0.12);
  color: var(--accent-ice);
  border: 1px solid rgba(0,198,255,0.2);
}
.badge-outline {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border-glass);
}
.card-date {
  white-space: nowrap;
}
.read-more-hint {
  font-size: 0.8rem;
  color: var(--accent-cyan);
  opacity: 0;
  transform: translateX(-6px);
  transition: all var(--transition-base);
}
.content-card:hover .read-more-hint {
  opacity: 1;
  transform: translateX(0);
}
.load-more-wrap {
  text-align: center;
  margin-top: 28px;
}
/* Tag Cloud */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag-item {
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-glass);
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--transition-base);
  cursor: pointer;
}
.tag-item:hover {
  background: rgba(0,198,255,0.1);
  border-color: var(--border-glow);
  color: var(--accent-ice);
  box-shadow: 0 0 12px rgba(0,198,255,0.15);
}
/* Featured / Recommendation */
.featured-card {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
  align-items: center;
}
.featured-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-glass);
  aspect-ratio: 16/10;
}
.featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.featured-content h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.featured-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}
/* Rules */
.rules-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.rule-item {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: all var(--transition-base);
}
.rule-item:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
}
.rule-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}
.rule-item h3 {
  color: var(--text-primary);
  font-size: 1.05rem;
  margin-bottom: 8px;
}
.rule-item p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}
/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-smooth);
}
.faq-item:hover {
  border-color: var(--border-glow);
}
.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 20px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(255,255,255,0.02);
  transition: all var(--transition-base);
}
.faq-question:hover {
  color: var(--accent-ice);
}
.faq-icon {
  flex-shrink: 0;
  transition: transform 0.3s ease;
  color: var(--accent-cyan);
  font-size: 1.2rem;
}
.faq-item.active .faq-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-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 20px 18px;
}
/* CTA Subscribe */
.cta-section {
  background: linear-gradient(135deg, rgba(0,198,255,0.08) 0%, rgba(0,123,255,0.05) 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glow);
  padding: 40px 32px;
  position: relative;
  overflow: hidden;
}
.cta-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
  align-items: center;
}
.cta-content h2 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.cta-content p {
  color: var(--text-secondary);
  margin-bottom: 0;
}
.cta-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.form-input {
  flex: 1;
  min-width: 200px;
  padding: 12px 18px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  transition: all var(--transition-base);
}
.form-input:focus-visible {
  border-color: var(--border-glow);
  box-shadow: 0 0 0 3px rgba(0,198,255,0.2);
  outline: none;
}
.form-input::placeholder {
  color: var(--text-muted);
}
.btn-submit {
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
  color: #fff;
  border-radius: var(--radius-pill);
  font-weight: 700;
  box-shadow: var(--shadow-glow);
  transition: all var(--transition-base);
}
.btn-submit:hover {
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-2px);
}
/* Footer */
.site-footer {
  background: rgba(8, 20, 38, 0.9);
  border-top: 1px solid var(--border-glass);
  padding: 50px 0 30px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 30px;
}
.footer-brand p {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
}
.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.footer-col ul {
  list-style: none;
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul li a {
  color: var(--text-muted);
  transition: color var(--transition-base);
}
.footer-col ul li a:hover {
  color: var(--accent-ice);
}
.footer-bottom {
  border-top: 1px solid var(--border-glass);
  padding-top: 20px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-bottom p {
  margin: 0;
}
.footer-bottom a {
  color: var(--text-muted);
}
.footer-bottom a:hover {
  color: var(--accent-ice);
}
/* Responsive */
@media (max-width: 1024px) {
  .category-hero-grid {
    grid-template-columns: 1fr;
  }
  .category-hero-visual {
    min-height: 220px;
  }
  .card-list-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .data-snapshot-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .rules-list {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  section {
    padding: 28px 0;
  }
  .section-title {
    font-size: 1.5rem;
  }
  .category-hero-content h1 {
    font-size: 1.9rem;
  }
  .category-hero-grid {
    gap: 20px;
  }
  .featured-card {
    grid-template-columns: 1fr;
  }
  .cta-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 520px) {
  :root {
    --container-pad: 16px;
  }
  .header-brand-row {
    flex-wrap: wrap;
    gap: 10px;
  }
  .header-search {
    display: none;
  }
  .btn-header {
    padding: 6px 14px;
    font-size: 0.8rem;
  }
  .header-channel-row {
    gap: 4px;
  }
  .nav-link {
    padding: 6px 12px;
    font-size: 0.85rem;
  }
  .card-list-grid,
  .data-snapshot-grid,
  .rules-list {
    grid-template-columns: 1fr;
  }
  .cta-section {
    padding: 28px 20px;
  }
  .cta-content h2 {
    font-size: 1.4rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .category-hero-visual {
    min-height: 180px;
  }
}

/* roulang page: category2 */
:root {
            --bg-primary: #0A1A2F;
            --bg-secondary: #0D1E36;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --border-glass: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(0, 198, 255, 0.45);
            --text-primary: #F0F7FF;
            --text-secondary: #B9C8DE;
            --text-muted: #8AA0BC;
            --accent-cyan: #00C6FF;
            --accent-ice: #4FD8FF;
            --accent-deep: #007BFF;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
            --shadow-glow: 0 0 20px rgba(0, 180, 255, 0.6);
            --shadow-glow-strong: 0 0 30px rgba(0, 180, 255, 0.85);
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-pill: 999px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1240px;
            --container-pad: 24px;
        }

        @media (max-width: 575.98px) {
            :root {
                --container-pad: 16px;
            }
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
            background: var(--bg-primary);
            background-image:
                radial-gradient(ellipse at 20% 10%, rgba(0, 198, 255, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 30%, rgba(0, 123, 255, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 80%, rgba(0, 198, 255, 0.04) 0%, transparent 60%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

        a:hover {
            color: var(--accent-ice);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
            -webkit-tap-highlight-color: transparent;
        }

        button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            box-shadow: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-pad);
            padding-right: var(--container-pad);
        }

        /* ---------- Header / Nav ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 26, 47, 0.9);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            transition: background var(--transition-smooth);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 12px 0;
            min-height: 56px;
        }

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

        .brand-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.15rem;
            box-shadow: var(--shadow-glow);
            flex-shrink: 0;
        }

        .brand-logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-pill);
            padding: 6px 14px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .header-search:focus-within {
            border-color: var(--border-glow);
            box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
        }

        .header-search input {
            color: var(--text-primary);
            background: transparent;
            width: 130px;
            font-size: 0.85rem;
        }

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

        .header-search .search-icon {
            color: var(--text-muted);
            font-size: 0.9rem;
            pointer-events: none;
        }

        .btn-header {
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-base);
            background: transparent;
            white-space: nowrap;
        }

        .btn-header:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            color: var(--accent-ice);
        }

        .btn-header.btn-primary-glow {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            border: none;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

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

        .header-channel-row {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 0 0 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .header-channel-row::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-base);
            position: relative;
            border: 1px solid transparent;
        }

        .nav-link:hover {
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.06);
            border-color: rgba(0, 198, 255, 0.15);
        }

        .nav-link.active {
            color: #fff;
            background: rgba(0, 198, 255, 0.12);
            border-color: var(--border-glow);
            box-shadow: 0 0 14px rgba(0, 180, 255, 0.3);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-ice));
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(0, 198, 255, 0.7);
        }

        /* ---------- Main layout ---------- */
        main {
            padding-top: 32px;
        }

        .page-section {
            padding: 40px 0;
            position: relative;
        }

        .page-section-alt {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
        }

        /* ---------- Section titles ---------- */
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            background: rgba(0, 198, 255, 0.1);
            border: 1px solid rgba(0, 198, 255, 0.2);
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-ice);
            letter-spacing: 0.05em;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.01em;
            line-height: 1.35;
            margin: 0;
        }

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

        /* ---------- Breadcrumb ---------- */
        .breadcrumb-wrapper {
            padding: 12px 0;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .breadcrumb-wrapper a {
            color: var(--accent-ice);
        }

        .breadcrumb-wrapper a:hover {
            text-decoration: underline;
        }

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

        /* ---------- Classification banner ---------- */
        .cls-banner {
            display: flex;
            align-items: center;
            gap: 28px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            position: relative;
            overflow: hidden;
            min-height: 160px;
        }

        .cls-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(0, 198, 255, 0.08), transparent 55%);
            pointer-events: none;
        }

        .cls-banner-content {
            flex: 1;
            position: relative;
            z-index: 1;
        }

        .cls-banner-content h1 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 8px 0;
            letter-spacing: 0.02em;
        }

        .cls-banner-content p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0;
            max-width: 600px;
            line-height: 1.8;
        }

        .cls-banner-visual {
            flex-shrink: 0;
            width: 110px;
            height: 110px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(0, 198, 255, 0.2), rgba(0, 123, 255, 0.1));
            border: 1px solid var(--border-glass);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.8rem;
            color: var(--accent-cyan);
            position: relative;
            z-index: 1;
            box-shadow: 0 0 30px rgba(0, 180, 255, 0.15);
        }

        /* ---------- Tags ---------- */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-badge {
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: all var(--transition-base);
            cursor: default;
        }

        .tag-badge:hover {
            border-color: var(--border-glow);
            color: var(--accent-ice);
            box-shadow: 0 0 12px rgba(0, 180, 255, 0.2);
        }

        /* ---------- Cards ---------- */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            overflow: hidden;
        }

        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        .strategy-card .card-img-wrap {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .strategy-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

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

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

        .strategy-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 8px 0;
            line-height: 1.5;
        }

        .strategy-card .card-text {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0 0 12px 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .strategy-card .card-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .strategy-card .card-meta .meta-tag {
            color: var(--accent-ice);
            font-weight: 500;
        }

        .strategy-card .read-more {
            margin-left: auto;
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.85rem;
            opacity: 0;
            transform: translateX(-6px);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .strategy-card:hover .read-more {
            opacity: 1;
            transform: translateX(0);
        }

        .read-more i {
            font-size: 0.75rem;
            margin-left: 4px;
        }

        /* ---------- Feature strategy card ---------- */
        .feature-strategy-card {
            display: flex;
            gap: 20px;
            align-items: stretch;
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition-smooth);
            min-height: 170px;
        }

        .feature-strategy-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            background: var(--bg-card-hover);
        }

        .feature-strategy-card .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, rgba(0, 198, 255, 0.25), rgba(0, 123, 255, 0.15));
            border: 1px solid rgba(0, 198, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
        }

        .feature-strategy-card .feature-content h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 6px 0;
        }

        .feature-strategy-card .feature-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ---------- Metrics ---------- */
        .metric-card {
            text-align: center;
            padding: 26px 16px;
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }

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

        .metric-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.3;
            letter-spacing: -0.02em;
        }

        .metric-number .unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--accent-ice);
            margin-left: 2px;
        }

        .metric-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ---------- Rules list ---------- */
        .rules-list {
            display: grid;
            gap: 14px;
        }

        .rule-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 18px 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
        }

        .rule-item:hover {
            border-color: var(--border-glow);
            background: rgba(0, 198, 255, 0.05);
        }

        .rule-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(0, 198, 255, 0.15);
            border: 1px solid rgba(0, 198, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .rule-text h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 4px 0;
        }

        .rule-text p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* ---------- FAQ ---------- */
        .faq-wrapper .accordion-item {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-wrapper .accordion-item:hover {
            border-color: var(--border-glow);
        }

        .faq-wrapper .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 16px 20px;
            border: none;
            box-shadow: none;
            width: 100%;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }

        .faq-wrapper .accordion-button::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.75rem;
            color: var(--accent-cyan);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-wrapper .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--accent-ice);
        }

        .faq-wrapper .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.2);
            outline: none;
        }

        .faq-wrapper .accordion-body {
            padding: 0 20px 18px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.8;
        }

        /* ---------- CTA ---------- */
        .cta-panel {
            background: rgba(255, 255, 255, 0.04);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 10%, rgba(0, 198, 255, 0.12), transparent 60%);
            pointer-events: none;
        }

        .cta-panel h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 12px 0;
            position: relative;
            z-index: 1;
        }

        .cta-panel p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            max-width: 560px;
            margin: 0 auto 22px;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
            position: relative;
            z-index: 1;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 12px 18px;
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

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

        .cta-form input:focus {
            border-color: var(--border-glow);
            box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.2);
        }

        .btn-glow {
            padding: 12px 28px;
            border-radius: var(--radius-pill);
            font-weight: 700;
            font-size: 0.95rem;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-smooth);
            border: none;
            white-space: nowrap;
        }

        .btn-glow:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
            color: #fff;
        }

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

        .btn-outline-glow {
            padding: 10px 24px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--accent-ice);
            border: 1px solid var(--border-glow);
            background: transparent;
            transition: all var(--transition-base);
        }

        .btn-outline-glow:hover {
            background: rgba(0, 198, 255, 0.1);
            box-shadow: var(--shadow-glow);
            color: #fff;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            margin-top: 48px;
            background: rgba(10, 26, 47, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-top: 1px solid var(--border-glass);
            padding: 40px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }

        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-top: 12px;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px 0;
        }

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

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

        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: color var(--transition-base);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-glass);
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .footer-bottom p {
            margin: 0;
        }

        .footer-bottom a {
            color: var(--accent-ice);
        }

        .footer-bottom a:hover {
            text-decoration: underline;
            color: var(--accent-cyan);
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cls-banner {
                flex-direction: column;
                text-align: center;
                padding: 24px 20px;
            }
            .cls-banner-content p {
                margin: 0 auto;
            }
            .cls-banner-visual {
                width: 72px;
                height: 72px;
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .strategy-card .card-img-wrap {
                height: 150px;
            }
        }

        @media (max-width: 767.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .header-brand-row {
                flex-wrap: wrap;
                gap: 8px;
            }
            .header-search input {
                width: 90px;
            }
            .btn-header {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 575.98px) {
            .page-section {
                padding: 28px 0;
            }
            .cls-banner {
                padding: 18px 16px;
                border-radius: var(--radius-md);
            }
            .cls-banner-content h1 {
                font-size: 1.4rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .feature-strategy-card {
                flex-direction: column;
                gap: 14px;
            }
            .cta-panel {
                padding: 28px 18px;
                border-radius: var(--radius-md);
            }
            .cta-form input {
                min-width: 100%;
            }
            .metric-number {
                font-size: 1.7rem;
            }
            .strategy-card .card-img-wrap {
                height: 160px;
            }
            .strategy-card .read-more {
                opacity: 1;
                transform: none;
            }
            .header-channel-row {
                padding-bottom: 6px;
                gap: 2px;
            }
            .nav-link {
                padding: 7px 12px;
                font-size: 0.82rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0A1A2F;
            --bg-secondary: #0D1E36;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --border-glass: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(0, 198, 255, 0.45);
            --text-primary: #F0F7FF;
            --text-secondary: #B9C8DE;
            --text-muted: #8AA0BC;
            --accent-cyan: #00C6FF;
            --accent-ice: #4FD8FF;
            --accent-deep: #007BFF;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
            --shadow-glow: 0 0 20px rgba(0, 180, 255, 0.6);
            --shadow-glow-strong: 0 0 30px rgba(0, 180, 255, 0.85);
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-pill: 999px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1240px;
            --container-pad: 24px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
            background: var(--bg-primary);
            background-image: radial-gradient(ellipse at 20% 10%, rgba(0, 198, 255, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 30%, rgba(0, 123, 255, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 80%, rgba(0, 198, 255, 0.04) 0%, transparent 60%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

        a:hover {
            color: var(--accent-ice);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
            -webkit-tap-highlight-color: transparent;
        }

        button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            box-shadow: none;
        }

        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-pad);
            padding-right: var(--container-pad);
        }

        /* ---------- Header / Nav ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 26, 47, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            transition: background var(--transition-smooth);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 12px 0;
            min-height: 56px;
        }

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

        .brand-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.15rem;
            box-shadow: var(--shadow-glow);
            flex-shrink: 0;
        }

        .brand-logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-pill);
            padding: 6px 14px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .header-search:focus-within {
            border-color: var(--border-glow);
            box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
        }

        .header-search input {
            color: var(--text-primary);
            background: transparent;
            width: 130px;
            font-size: 0.85rem;
        }

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

        .header-search .search-icon {
            color: var(--text-muted);
            font-size: 0.9rem;
            pointer-events: none;
        }

        .btn-header {
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-header:hover {
            border-color: var(--border-glow);
            background: rgba(0, 198, 255, 0.08);
            color: var(--text-primary);
        }

        .btn-header-primary {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            border: none;
            box-shadow: var(--shadow-glow);
        }

        .btn-header-primary:hover {
            background: linear-gradient(135deg, var(--accent-ice), var(--accent-cyan));
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-1px);
            border: none;
        }

        .header-channel-row {
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: rgba(0, 198, 255, 0.3) transparent;
            padding: 8px 0 10px;
            border-top: 1px solid var(--border-glass);
        }

        .header-channel-row::-webkit-scrollbar {
            height: 3px;
        }

        .header-channel-row::-webkit-scrollbar-track {
            background: transparent;
        }

        .header-channel-row::-webkit-scrollbar-thumb {
            background: rgba(0, 198, 255, 0.4);
            border-radius: 3px;
        }

        .nav-link {
            position: relative;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-base);
            flex-shrink: 0;
        }

        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-link.active {
            color: var(--text-primary);
            background: rgba(0, 198, 255, 0.12);
            border: 1px solid var(--border-glow);
            box-shadow: 0 0 12px rgba(0, 180, 255, 0.25);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent-cyan);
            box-shadow: 0 0 8px var(--accent-cyan);
        }

        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--border-glass);
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            font-size: 1.2rem;
            background: rgba(255, 255, 255, 0.05);
            transition: border-color var(--transition-base);
            flex-shrink: 0;
        }

        .mobile-menu-toggle:hover {
            border-color: var(--border-glow);
        }

        /* ---------- Category Hero ---------- */
        .category-hero {
            position: relative;
            padding: 48px 0 56px;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(10, 26, 47, 0.95), rgba(13, 30, 54, 0.92)),
                url('/assets/images/a00d5541277e6f2a.webp') center/cover no-repeat;
            background-blend-mode: overlay;
            border-bottom: 1px solid var(--border-glass);
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(0, 198, 255, 0.12), transparent 60%);
            pointer-events: none;
        }

        .category-hero-content {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 48px;
            align-items: center;
        }

        .category-hero-text {
            max-width: 640px;
        }

        .category-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.1);
            border: 1px solid rgba(0, 198, 255, 0.3);
            margin-bottom: 16px;
        }

        .category-hero-badge i {
            font-size: 0.7rem;
        }

        .category-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .category-hero h1 .gradient-text {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-ice));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .category-hero-desc {
            font-size: 1.02rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 580px;
        }

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

        .btn-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-pill);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-base);
            border: none;
        }

        .btn-glow:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
            color: #fff;
            background: linear-gradient(135deg, var(--accent-ice), var(--accent-cyan));
        }

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

        .btn-glass {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-pill);
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(12px);
            transition: all var(--transition-base);
        }

        .btn-glass:hover {
            border-color: var(--border-glow);
            background: rgba(0, 198, 255, 0.08);
            color: var(--text-primary);
            transform: translateY(-1px);
        }

        .category-hero-panel {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        .hero-panel-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 18px;
        }

        .hero-panel-title i {
            color: var(--accent-cyan);
        }

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

        .hero-rank-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid transparent;
            transition: all var(--transition-base);
        }

        .hero-rank-item:hover {
            background: rgba(0, 198, 255, 0.06);
            border-color: var(--border-glass);
        }

        .hero-rank-num {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }

        .rank-num-1 {
            background: linear-gradient(135deg, #FFD700, #FFA500);
        }
        .rank-num-2 {
            background: linear-gradient(135deg, #C0C0C0, #8A9BAA);
        }
        .rank-num-3 {
            background: linear-gradient(135deg, #CD7F32, #B86B40);
        }
        .rank-num-other {
            background: rgba(255, 255, 255, 0.15);
        }

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

        .hero-rank-name {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .hero-rank-meta {
            font-size: 0.72rem;
            color: var(--text-muted);
        }

        .hero-rank-trend {
            font-size: 0.75rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .trend-up {
            color: #4ADE80;
        }
        .trend-down {
            color: #F87171;
        }
        .trend-stable {
            color: #FBBF24;
        }

        /* ---------- Main Content ---------- */
        .main-content {
            padding: 48px 0 64px;
        }

        .section {
            margin-bottom: 56px;
        }

        .section:last-child {
            margin-bottom: 0;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .section-heading {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .section-heading .heading-accent {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-ice));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-subtitle {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ---------- List Card Grid ---------- */
        .list-card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .list-card {
            display: flex;
            gap: 18px;
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 16px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }

        .list-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
        }

        .list-card-cover {
            width: 150px;
            height: 110px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
            position: relative;
        }

        .list-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

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

        .list-card-body {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .list-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 8px;
        }

        .card-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            font-size: 0.68rem;
            font-weight: 600;
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.1);
            border: 1px solid rgba(0, 198, 255, 0.2);
            white-space: nowrap;
        }

        .card-tag-alt {
            color: #FBBF24;
            background: rgba(251, 191, 36, 0.1);
            border-color: rgba(251, 191, 36, 0.2);
        }

        .card-tag-green {
            color: #4ADE80;
            background: rgba(74, 222, 128, 0.1);
            border-color: rgba(74, 222, 128, 0.2);
        }

        .list-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .list-card-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .list-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            margin-top: 10px;
            padding-top: 10px;
            border-top: 1px solid var(--border-glass);
        }

        .list-card-meta {
            font-size: 0.72rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .list-card-link {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-cyan);
            display: flex;
            align-items: center;
            gap: 4px;
            white-space: nowrap;
        }

        .list-card-link i {
            font-size: 0.65rem;
            transition: transform var(--transition-base);
        }

        .list-card:hover .list-card-link i {
            transform: translateX(3px);
        }

        /* ---------- Weekly Featured ---------- */
        .featured-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 20px;
        }

        .featured-main {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }

        .featured-main:hover {
            border-color: var(--border-glow);
            background: var(--bg-card-hover);
        }

        .featured-main-cover {
            width: 100%;
            height: 220px;
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 16px;
        }

        .featured-main-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .featured-main h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .featured-main p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

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

        .featured-side-item {
            display: flex;
            gap: 12px;
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 12px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            flex: 1;
        }

        .featured-side-item:hover {
            border-color: var(--border-glow);
            background: var(--bg-card-hover);
            transform: translateY(-2px);
        }

        .featured-side-cover {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }

        .featured-side-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

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

        .featured-side-info h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .featured-side-info p {
            font-size: 0.75rem;
            color: var(--text-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ---------- Data Snapshot ---------- */
        .data-snapshot-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .data-snapshot-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 20px 18px;
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: all var(--transition-base);
        }

        .data-snapshot-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-3px);
            background: var(--bg-card-hover);
        }

        .data-snapshot-icon {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 1.2rem;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            box-shadow: 0 0 16px rgba(0, 180, 255, 0.35);
        }

        .data-snapshot-value {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .data-snapshot-value .unit {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-left: 2px;
        }

        .data-snapshot-label {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* ---------- Tag Cloud ---------- */
        .tag-cloud-box {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-item {
            padding: 7px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-base);
        }

        .tag-item:hover {
            color: var(--text-primary);
            border-color: var(--border-glow);
            background: rgba(0, 198, 255, 0.08);
            box-shadow: 0 0 12px rgba(0, 180, 255, 0.2);
        }

        .tag-item-large {
            font-size: 0.95rem;
            padding: 9px 22px;
            color: var(--accent-ice);
        }

        .tag-item-medium {
            font-size: 0.86rem;
            color: var(--text-primary);
        }

        /* ---------- Rule Info ---------- */
        .rule-info-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .rule-info-block h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .rule-info-block h3 i {
            color: var(--accent-cyan);
        }

        .rule-info-block p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .rule-info-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .rule-info-list li {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            padding-left: 18px;
            position: relative;
        }

        .rule-info-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-cyan);
            box-shadow: 0 0 6px rgba(0, 198, 255, 0.5);
        }

        /* ---------- FAQ ---------- */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--border-glass);
        }

        .faq-item.active {
            border-color: var(--border-glow);
            background: var(--bg-card-hover);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            transition: all var(--transition-base);
            width: 100%;
            text-align: left;
        }

        .faq-question h3 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.5;
            flex: 1;
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 198, 255, 0.1);
            color: var(--accent-cyan);
            font-size: 0.8rem;
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            background: rgba(0, 198, 255, 0.18);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 20px;
        }

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

        .faq-answer p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ---------- CTA ---------- */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 198, 255, 0.08), rgba(0, 123, 255, 0.12)),
                url('/assets/images/aec7297834531f2b.webp') center/cover no-repeat;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-glass);
            padding: 40px 36px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
        }

        .cta-info {
            flex: 1;
            min-width: 280px;
        }

        .cta-info h2 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .cta-info p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            flex-shrink: 0;
        }

        .cta-input {
            padding: 12px 20px;
            border-radius: var(--radius-pill);
            font-size: 0.88rem;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            min-width: 240px;
            transition: all var(--transition-base);
        }

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

        .cta-input:focus {
            border-color: var(--border-glow);
            box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
            background: rgba(255, 255, 255, 0.08);
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: rgba(10, 26, 47, 0.95);
            border-top: 1px solid var(--border-glass);
            padding: 48px 0 24px;
            margin-top: 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-top: 12px;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

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

        .footer-col ul li a {
            font-size: 0.82rem;
            color: var(--text-muted);
            transition: color var(--transition-base);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-glass);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            align-items: center;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            font-size: 0.75rem;
            color: var(--text-muted);
            transition: color var(--transition-base);
        }

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

        /* ---------- Responsive ---------- */
        @media (max-width: 1024px) {
            .category-hero-content {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .category-hero-panel {
                max-width: 480px;
            }
            .data-snapshot-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .rule-info-card {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-actions .header-search {
                display: none;
            }
            .list-card-grid {
                grid-template-columns: 1fr;
            }
            .list-card-cover {
                width: 120px;
                height: 90px;
            }
            .category-hero {
                padding: 32px 0 40px;
            }
            .category-hero h1 {
                font-size: 1.9rem;
            }
            .category-hero-desc {
                font-size: 0.92rem;
            }
            .data-snapshot-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .data-snapshot-value {
                font-size: 1.4rem;
            }
            .cta-section {
                padding: 28px 22px;
            }
            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-form {
                width: 100%;
            }
            .cta-input {
                flex: 1;
                min-width: 0;
            }
            .rule-info-card {
                padding: 20px;
            }
            .section-heading {
                font-size: 1.35rem;
            }
        }

        @media (max-width: 576px) {
            :root {
                --container-pad: 16px;
            }
            .header-brand-row {
                flex-wrap: wrap;
            }
            .header-actions .btn-header {
                display: none;
            }
            .btn-header-primary {
                display: inline-flex !important;
                padding: 6px 14px;
                font-size: 0.78rem;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .header-channel-row {
                padding: 6px 0 8px;
            }
            .nav-link {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .category-hero-panel {
                padding: 16px;
            }
            .list-card {
                flex-direction: column;
                padding: 12px;
            }
            .list-card-cover {
                width: 100%;
                height: 140px;
            }
            .data-snapshot-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .data-snapshot-card {
                padding: 14px 10px;
            }
            .data-snapshot-value {
                font-size: 1.2rem;
            }
            .data-snapshot-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
                border-radius: 10px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-input {
                width: 100%;
                min-width: 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 6px;
            }
            .rule-info-card {
                padding: 16px;
            }
            .section {
                margin-bottom: 40px;
            }
            .main-content {
                padding: 32px 0 48px;
            }
            .section-heading {
                font-size: 1.2rem;
            }
            .featured-main {
                padding: 16px;
            }
            .featured-main-cover {
                height: 160px;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0A1A2F;
            --bg-secondary: #0D1E36;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --border-glass: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(0, 198, 255, 0.45);
            --text-primary: #F0F7FF;
            --text-secondary: #B9C8DE;
            --text-muted: #8AA0BC;
            --accent-cyan: #00C6FF;
            --accent-ice: #4FD8FF;
            --accent-deep: #007BFF;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
            --shadow-glow: 0 0 20px rgba(0, 180, 255, 0.6);
            --shadow-glow-strong: 0 0 30px rgba(0, 180, 255, 0.85);
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-pill: 999px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1240px;
            --container-pad: 24px;
        }

        @media (max-width: 575.98px) {
            :root {
                --container-pad: 16px;
            }
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
            background: var(--bg-primary);
            background-image:
                radial-gradient(ellipse at 20% 10%, rgba(0, 198, 255, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 30%, rgba(0, 123, 255, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 80%, rgba(0, 198, 255, 0.04) 0%, transparent 60%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

        a:hover {
            color: var(--accent-ice);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
            -webkit-tap-highlight-color: transparent;
        }

        button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            box-shadow: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-pad);
            padding-right: var(--container-pad);
        }

        /* ---------- Header / Nav ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 26, 47, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            transition: background var(--transition-smooth);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 12px 0;
            min-height: 56px;
        }

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

        .brand-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.15rem;
            box-shadow: var(--shadow-glow);
            flex-shrink: 0;
        }

        .brand-logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-pill);
            padding: 6px 14px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .header-search:focus-within {
            border-color: var(--border-glow);
            box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
        }

        .header-search input {
            color: var(--text-primary);
            background: transparent;
            width: 130px;
            font-size: 0.85rem;
        }

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

        .header-search .search-icon {
            color: var(--text-muted);
            font-size: 0.9rem;
            pointer-events: none;
        }

        .btn-header {
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-header:hover {
            border-color: var(--border-glow);
            color: var(--accent-ice);
            box-shadow: 0 0 12px rgba(0, 198, 255, 0.25);
        }

        .btn-header-primary {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            border: 1px solid rgba(0, 198, 255, 0.5);
            box-shadow: var(--shadow-glow);
            color: #fff;
            font-weight: 700;
        }

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

        .header-channel-row {
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            padding: 6px 0 10px;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
        }

        .header-channel-row::-webkit-scrollbar {
            height: 3px;
        }

        .header-channel-row::-webkit-scrollbar-thumb {
            background-color: rgba(255, 255, 255, 0.15);
            border-radius: 999px;
        }

        .header-channel-row::-webkit-scrollbar-track {
            background: transparent;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            border-radius: var(--radius-pill);
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-muted);
            white-space: nowrap;
            transition: all var(--transition-base);
            position: relative;
            flex-shrink: 0;
        }

        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 198, 255, 0.1);
            border: 1px solid rgba(0, 198, 255, 0.3);
            box-shadow: 0 0 14px rgba(0, 198, 255, 0.2);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent-cyan);
            box-shadow: 0 0 8px var(--accent-cyan);
        }

        .mobile-nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--border-glass);
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            transition: all var(--transition-base);
            flex-shrink: 0;
        }

        .mobile-nav-toggle:hover {
            border-color: var(--border-glow);
            color: var(--accent-ice);
            box-shadow: 0 0 12px rgba(0, 198, 255, 0.25);
        }

        @media (max-width: 991.98px) {
            .header-search {
                display: none;
            }
            .mobile-nav-toggle {
                display: flex;
            }
        }

        @media (max-width: 575.98px) {
            .header-brand-row {
                flex-wrap: wrap;
                padding: 8px 0;
            }
            .brand-logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
                border-radius: 10px;
            }
            .brand-logo-text {
                font-size: 1.1rem;
            }
            .btn-header {
                padding: 6px 13px;
                font-size: 0.78rem;
            }
            .nav-link {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
        }

        /* ---------- Hero / Category Banner ---------- */
        .category-banner {
            position: relative;
            padding: 72px 0 56px;
            background-image: url('/assets/images/a00d5541277e6f2a.webp');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border-glass);
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 26, 47, 0.82) 0%, rgba(13, 30, 54, 0.94) 100%);
            z-index: 1;
        }

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

        .category-banner-content {
            max-width: 780px;
        }

        .banner-region-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .region-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: all var(--transition-base);
        }

        .region-tag:hover {
            border-color: var(--border-glow);
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.08);
        }

        .region-tag .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-cyan);
            box-shadow: 0 0 8px var(--accent-cyan);
            flex-shrink: 0;
        }

        .category-banner h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }

        .category-banner .banner-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .banner-meta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .banner-meta .icon {
            color: var(--accent-cyan);
            font-size: 0.85rem;
        }

        @media (max-width: 991.98px) {
            .category-banner {
                padding: 48px 0 40px;
            }
            .category-banner h1 {
                font-size: 1.7rem;
            }
            .category-banner .banner-subtitle {
                font-size: 0.92rem;
            }
        }

        @media (max-width: 575.98px) {
            .category-banner {
                padding: 36px 0 30px;
            }
            .category-banner h1 {
                font-size: 1.35rem;
            }
            .category-banner .banner-subtitle {
                font-size: 0.85rem;
                line-height: 1.7;
            }
            .banner-meta {
                gap: 10px;
                font-size: 0.75rem;
                flex-wrap: wrap;
            }
        }

        /* ---------- Section Base ---------- */
        .section-block {
            padding: 48px 0;
            border-bottom: 1px solid var(--border-glass);
        }

        .section-block:last-of-type {
            border-bottom: none;
        }

        .section-title {
            font-size: 1.45rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        @media (max-width: 575.98px) {
            .section-block {
                padding: 30px 0;
            }
            .section-title {
                font-size: 1.2rem;
            }
            .section-subtitle {
                font-size: 0.82rem;
                margin-bottom: 18px;
            }
        }

        /* ---------- Glass Card ---------- */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            overflow: hidden;
            height: 100%;
        }

        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 198, 255, 0.35);
            box-shadow: 0 12px 48px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 198, 255, 0.15);
            transform: translateY(-4px);
        }

        .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: rgba(255, 255, 255, 0.03);
        }

        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

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

        .card-img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(10, 26, 47, 0.7) 100%);
            pointer-events: none;
        }

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

        .card-tag-list {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }

        .card-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.1);
            border: 1px solid rgba(0, 198, 255, 0.25);
            transition: all var(--transition-base);
        }

        .card-tag:hover {
            background: rgba(0, 198, 255, 0.2);
            border-color: rgba(0, 198, 255, 0.5);
            color: #fff;
        }

        .card-title-link {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.45;
            display: block;
            margin-bottom: 8px;
            transition: color var(--transition-base);
        }

        .card-title-link:hover {
            color: var(--accent-ice);
        }

        .card-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.75rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 12px;
        }

        .card-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .card-meta .meta-icon {
            color: var(--accent-cyan);
            font-size: 0.75rem;
        }

        .btn-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-cyan);
            transition: all var(--transition-base);
            position: relative;
        }

        .btn-read-more::after {
            content: '→';
            transition: transform var(--transition-base);
        }

        .btn-read-more:hover {
            color: var(--accent-ice);
        }

        .btn-read-more:hover::after {
            transform: translateX(4px);
        }

        /* ---------- Glow Button ---------- */
        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-pill);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(0, 198, 255, 0.4);
            transition: all var(--transition-smooth);
            text-align: center;
            white-space: nowrap;
        }

        .btn-glow:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-glow:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(0, 180, 255, 0.4);
        }

        .btn-glow:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
            box-shadow: var(--shadow-glow-strong);
        }

        .btn-outline-glass {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-pill);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-smooth);
            text-align: center;
        }

        .btn-outline-glass:hover {
            border-color: var(--border-glow);
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.06);
            box-shadow: 0 0 16px rgba(0, 198, 255, 0.2);
        }

        .btn-outline-glass:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

        /* ---------- Tag Cloud ---------- */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .tag-cloud-item:hover {
            color: var(--accent-cyan);
            border-color: var(--border-glow);
            background: rgba(0, 198, 255, 0.08);
            box-shadow: 0 0 14px rgba(0, 198, 255, 0.2);
        }

        .tag-cloud-item .tag-count {
            font-size: 0.7rem;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.08);
            padding: 2px 8px;
            border-radius: var(--radius-pill);
            font-weight: 400;
        }

        /* ---------- Player Rank ---------- */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 18px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }

        .rank-item:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(0, 198, 255, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .rank-position {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-glass);
            flex-shrink: 0;
            transition: all var(--transition-base);
        }

        .rank-item:nth-child(1) .rank-position {
            background: linear-gradient(135deg, #FFD700, #FFA500);
            color: #1a1a1a;
            border-color: rgba(255, 215, 0, 0.5);
            box-shadow: 0 0 16px rgba(255, 215, 0, 0.4);
        }

        .rank-item:nth-child(2) .rank-position {
            background: linear-gradient(135deg, #C0C0C0, #A8A8A8);
            color: #1a1a1a;
            border-color: rgba(192, 192, 192, 0.5);
            box-shadow: 0 0 12px rgba(192, 192, 192, 0.3);
        }

        .rank-item:nth-child(3) .rank-position {
            background: linear-gradient(135deg, #CD7F32, #B87333);
            color: #1a1a1a;
            border-color: rgba(205, 127, 50, 0.5);
            box-shadow: 0 0 12px rgba(205, 127, 50, 0.3);
        }

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

        .rank-name {
            font-weight: 700;
            font-size: 0.92rem;
            color: var(--text-primary);
            display: block;
            margin-bottom: 3px;
        }

        .rank-desc {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: block;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-stats {
            text-align: right;
            flex-shrink: 0;
        }

        .rank-value {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--accent-cyan);
        }

        .rank-label {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        /* ---------- Stats Snapshot ---------- */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .stat-block {
            padding: 24px 20px;
            text-align: center;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }

        .stat-block:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(0, 198, 255, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
            margin-bottom: 6px;
            text-shadow: 0 0 20px rgba(0, 198, 255, 0.4);
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* ---------- FAQ Accordion ---------- */
        .accordion-custom {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .accordion-item-custom {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .accordion-item-custom:hover {
            border-color: rgba(0, 198, 255, 0.25);
            background: rgba(255, 255, 255, 0.06);
        }

        .accordion-trigger {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            width: 100%;
            text-align: left;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: all var(--transition-base);
            background: transparent;
            border: none;
        }

        .accordion-trigger:hover {
            color: var(--accent-ice);
        }

        .accordion-trigger .accordion-icon {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(0, 198, 255, 0.1);
            border: 1px solid rgba(0, 198, 255, 0.25);
            color: var(--accent-cyan);
            font-size: 0.75rem;
            flex-shrink: 0;
            transition: transform var(--transition-smooth);
        }

        .accordion-trigger.open .accordion-icon {
            transform: rotate(45deg);
            background: rgba(0, 198, 255, 0.2);
        }

        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth);
            padding: 0 20px;
        }

        .accordion-content-inner {
            padding: 0 0 16px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .accordion-trigger.open + .accordion-content {
            max-height: 300px;
        }

        /* ---------- CTA Form ---------- */
        .cta-section {
            padding: 56px 0;
            background: linear-gradient(135deg, rgba(0, 198, 255, 0.06) 0%, transparent 60%);
            border-bottom: 1px solid var(--border-glass);
        }

        .cta-glass {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 36px 32px;
            transition: all var(--transition-smooth);
        }

        .cta-glass:hover {
            border-color: rgba(0, 198, 255, 0.35);
            box-shadow: 0 12px 48px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 198, 255, 0.15);
        }

        .cta-glass h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .cta-glass p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .form-glass-input {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-pill);
            padding: 6px 6px 6px 18px;
            transition: all var(--transition-base);
            width: 100%;
        }

        .form-glass-input:focus-within {
            border-color: var(--border-glow);
            box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
        }

        .form-glass-input input {
            flex: 1;
            color: var(--text-primary);
            background: transparent;
            font-size: 0.88rem;
            min-width: 0;
        }

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

        .form-glass-input .btn-glow {
            padding: 10px 22px;
            font-size: 0.85rem;
            flex-shrink: 0;
            border-radius: var(--radius-pill);
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: rgba(8, 20, 38, 0.9);
            border-top: 1px solid var(--border-glass);
            padding: 48px 0 24px;
            margin-top: 0;
        }

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

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-top: 12px;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            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: 0.85rem;
            color: var(--text-muted);
            transition: all var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--accent-ice);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-glass);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            font-size: 0.78rem;
            color: var(--text-muted);
            align-items: center;
        }

        .footer-bottom p {
            margin: 0;
        }

        .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition-base);
        }

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

        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .stat-block {
                padding: 18px 14px;
            }
            .stat-number {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 6px;
                font-size: 0.72rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .stat-number {
                font-size: 1.2rem;
            }
            .stat-label {
                font-size: 0.75rem;
            }
            .cta-glass {
                padding: 24px 18px;
            }
            .form-glass-input {
                flex-direction: column;
                padding: 10px;
                border-radius: var(--radius-md);
            }
            .form-glass-input .btn-glow {
                width: 100%;
                border-radius: var(--radius-md);
            }
        }

        /* ---------- Bootstrap Override ---------- */
        .row {
            --bs-gutter-x: 1.25rem;
            --bs-gutter-y: 1.25rem;
        }

        .card-img-wrap .img-fluid {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

/* roulang page: category5 */
:root {
  --bg-primary: #0A1A2F;
  --bg-secondary: #0D1E36;
  --bg-card: rgba(255, 255, 255, 0.06);
  --bg-card-hover: rgba(255, 255, 255, 0.1);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 198, 255, 0.45);
  --text-primary: #F0F7FF;
  --text-secondary: #B9C8DE;
  --text-muted: #8AA0BC;
  --accent-cyan: #00C6FF;
  --accent-ice: #4FD8FF;
  --accent-deep: #007BFF;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(0, 180, 255, 0.6);
  --shadow-glow-strong: 0 0 30px rgba(0, 180, 255, 0.85);
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --container-max: 1240px;
  --container-pad: 24px;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  background: var(--bg-primary);
  background-image: radial-gradient(ellipse at 20% 10%, rgba(0, 198, 255, 0.08) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 30%, rgba(0, 123, 255, 0.06) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 80%, rgba(0, 198, 255, 0.04) 0%, transparent 60%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}
a:hover {
  color: var(--accent-ice);
}
button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  outline: none;
  border: none;
  background: none;
}
button {
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 26, 47, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-glass);
  transition: background var(--transition-smooth);
}
.header-brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  min-height: 56px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: var(--shadow-glow);
  flex-shrink: 0;
}
.brand-logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.header-search:focus-within {
  border-color: var(--border-glow);
  box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
}
.header-search input {
  color: var(--text-primary);
  background: transparent;
  width: 130px;
  font-size: 0.85rem;
}
.header-search input::placeholder {
  color: var(--text-muted);
}
.header-search .search-icon {
  color: var(--text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}
.btn-header {
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  transition: all var(--transition-base);
}
.btn-header:hover {
  border-color: var(--border-glow);
  background: rgba(0, 198, 255, 0.08);
  color: #fff;
}
.header-channel-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 0 12px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.1) transparent;
}
.header-channel-row::-webkit-scrollbar {
  height: 4px;
}
.header-channel-row::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 999px;
}
.nav-link {
  flex-shrink: 0;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid transparent;
  transition: all var(--transition-base);
  white-space: nowrap;
}
.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}
.nav-link.active {
  color: #fff;
  background: rgba(0, 198, 255, 0.12);
  border-color: var(--border-glow);
  box-shadow: 0 0 14px rgba(0, 198, 255, 0.2);
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  padding: 6px;
  cursor: pointer;
  border-radius: 8px;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}
.page-main {
  min-height: 70vh;
}
/* Category Banner */
.category-banner {
  padding: 40px 0 28px;
  border-bottom: 1px solid var(--border-glass);
  background: linear-gradient(180deg, rgba(0, 198, 255, 0.05) 0%, transparent 100%);
}
.category-banner-inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 920px;
}
.category-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.category-breadcrumb a:hover {
  color: var(--accent-ice);
}
.category-banner h1 {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.3;
  letter-spacing: 0.02em;
}
.category-banner p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 720px;
}
.banner-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 4px;
}
.banner-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.banner-meta .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
}
/* Section */
.section {
  padding: 40px 0;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}
.section-head h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}
.section-head .sub {
  font-size: 0.9rem;
  color: var(--text-muted);
}
.section-head .more-link {
  flex-shrink: 0;
  padding: 6px 16px;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  color: var(--accent-ice);
  transition: all var(--transition-base);
}
.section-head .more-link:hover {
  border-color: var(--border-glow);
  background: rgba(0, 198, 255, 0.08);
  color: #fff;
}
/* Activity Cards Grid */
.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.activity-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  display: flex;
  flex-direction: column;
}
.activity-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  border-color: var(--border-glow);
}
.activity-card-img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
}
.activity-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}
.activity-card:hover .activity-card-img img {
  transform: scale(1.05);
}
.activity-card-img .badge {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(10, 26, 47, 0.8);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-glow);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-ice);
}
.activity-card-body {
  padding: 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.activity-card-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
}
.activity-card-body p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  flex: 1;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-glass);
  padding-top: 10px;
}
.card-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.btn-read {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  box-shadow: var(--shadow-glow);
  transition: all var(--transition-base);
  align-self: flex-start;
}
.btn-read:hover {
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-2px);
  color: #fff;
}
/* Tag Cloud */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag-item {
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--transition-base);
  cursor: pointer;
}
.tag-item:hover,
.tag-item.active {
  border-color: var(--border-glow);
  background: rgba(0, 198, 255, 0.12);
  color: #fff;
  box-shadow: 0 0 14px rgba(0, 198, 255, 0.2);
}
/* Weekly Recommendation */
.weekly-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(14px);
}
.weekly-card-img {
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.weekly-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.weekly-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: center;
}
.weekly-card-body h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
}
.weekly-card-body p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}
.weekly-card-body .btn-read {
  align-self: flex-start;
}
/* Data Snapshot */
.data-snapshot {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.snapshot-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
}
.snapshot-item:hover {
  border-color: var(--border-glow);
  transform: translateY(-3px);
}
.snapshot-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-ice);
  line-height: 1.2;
  margin-bottom: 8px;
}
.snapshot-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}
/* Rules Panel */
.rules-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
}
.rules-panel h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.rules-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  list-style: none;
}
.rules-list li {
  display: flex;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}
.rules-list .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
  color: #fff;
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
  margin-top: 2px;
}
/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  backdrop-filter: blur(12px);
  transition: border-color var(--transition-base);
}
.faq-item.active {
  border-color: var(--border-glow);
}
.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 22px;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  transition: background var(--transition-base);
}
.faq-question:hover {
  background: var(--bg-card-hover);
}
.faq-question .icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-ice);
  font-size: 1rem;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}
.faq-item.active .faq-question .icon {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 22px 18px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  display: none;
}
.faq-item.active .faq-answer {
  display: block;
}
/* CTA */
.cta-section {
  padding: 50px 0;
}
.cta-card {
  background: linear-gradient(135deg, rgba(0, 198, 255, 0.12) 0%, rgba(0, 123, 255, 0.08) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(14px);
}
.cta-card h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.cta-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 22px;
}
.cta-form {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 460px;
  margin: 0 auto;
}
.cta-form input {
  flex: 1;
  min-width: 220px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--transition-base);
}
.cta-form input::placeholder {
  color: var(--text-muted);
}
.cta-form input:focus {
  border-color: var(--border-glow);
  box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
}
.btn-primary {
  padding: 10px 26px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: var(--shadow-glow);
  transition: all var(--transition-base);
  white-space: nowrap;
}
.btn-primary:hover {
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-2px);
  color: #fff;
}
.btn-primary:focus-visible,
.btn-read:focus-visible,
.btn-header:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
}
/* Footer */
.site-footer {
  background: rgba(8, 20, 36, 0.9);
  border-top: 1px solid var(--border-glass);
  padding: 40px 0 20px;
  margin-top: 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 28px;
}
.footer-brand .brand-logo {
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 300px;
}
.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-col ul a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition-base);
}
.footer-col ul a:hover {
  color: var(--accent-ice);
}
.footer-bottom {
  border-top: 1px solid var(--border-glass);
  padding-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.footer-bottom p {
  margin: 0;
}
.footer-bottom a {
  color: var(--text-muted);
  text-decoration: none;
}
.footer-bottom a:hover {
  color: var(--accent-ice);
}
/* Responsive */
@media (max-width: 1024px) {
  .activity-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .data-snapshot {
    grid-template-columns: repeat(2, 1fr);
  }
  .rules-list {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  :root {
    --container-pad: 16px;
  }
  .category-banner h1 {
    font-size: 1.8rem;
  }
  .weekly-card {
    grid-template-columns: 1fr;
  }
  .weekly-card-img {
    aspect-ratio: 16 / 9;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .header-actions .btn-header {
    display: none;
  }
  .header-search input {
    width: 100px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 6px;
  }
}
@media (max-width: 520px) {
  .activity-grid {
    grid-template-columns: 1fr;
  }
  .data-snapshot {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .category-banner h1 {
    font-size: 1.5rem;
  }
  .category-banner p {
    font-size: 0.95rem;
  }
  .cta-form {
    flex-direction: column;
  }
  .cta-form input {
    width: 100%;
    min-width: 0;
  }
  .btn-primary {
    width: 100%;
  }
  .header-search {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .header-channel-row {
    display: none;
  }
  .header-channel-row.open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 0 0 16px;
  }
  .nav-link {
    text-align: center;
  }
}

/* roulang page: category6 */
:root {
            --bg-primary: #0A1A2F;
            --bg-secondary: #0D1E36;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --border-glass: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(0, 198, 255, 0.45);
            --text-primary: #F0F7FF;
            --text-secondary: #B9C8DE;
            --text-muted: #8AA0BC;
            --accent-cyan: #00C6FF;
            --accent-ice: #4FD8FF;
            --accent-deep: #007BFF;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
            --shadow-glow: 0 0 20px rgba(0, 180, 255, 0.6);
            --shadow-glow-strong: 0 0 30px rgba(0, 180, 255, 0.85);
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-pill: 999px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1240px;
            --container-pad: 24px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
            background: var(--bg-primary);
            background-image: radial-gradient(ellipse at 20% 10%, rgba(0, 198, 255, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 30%, rgba(0, 123, 255, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 80%, rgba(0, 198, 255, 0.04) 0%, transparent 60%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--accent-ice);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            outline: none;
            border: none;
            background: none;
        }
        button {
            cursor: pointer;
            -webkit-tap-highlight-color: transparent;
        }
        button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            box-shadow: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-pad);
            padding-right: var(--container-pad);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 26, 47, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            transition: background var(--transition-smooth);
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 12px 0;
            min-height: 56px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.15rem;
            box-shadow: var(--shadow-glow);
            flex-shrink: 0;
        }
        .brand-logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-pill);
            padding: 6px 14px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .header-search:focus-within {
            border-color: var(--border-glow);
            box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
        }
        .header-search input {
            color: var(--text-primary);
            background: transparent;
            width: 130px;
            font-size: 0.85rem;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-search .search-icon {
            color: var(--text-muted);
            font-size: 0.9rem;
            pointer-events: none;
        }
        .btn-header {
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-header:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            color: var(--text-primary);
        }
        .btn-header-primary {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            border: none;
            box-shadow: var(--shadow-glow);
            color: #fff;
        }
        .btn-header-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            color: #fff;
        }
        .header-channel-row {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 0 0 12px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border-glass) transparent;
            -webkit-overflow-scrolling: touch;
        }
        .header-channel-row::-webkit-scrollbar {
            height: 4px;
        }
        .header-channel-row::-webkit-scrollbar-thumb {
            background: var(--border-glass);
            border-radius: 999px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            border: 1px solid transparent;
            transition: all var(--transition-base);
            position: relative;
        }
        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-link.active {
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.1);
            border-color: rgba(0, 198, 255, 0.25);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 999px;
            background: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 198, 255, 0.7);
        }
        .mobile-toggle {
            display: none;
        }
        .category-banner {
            padding: 60px 0 40px;
            background: linear-gradient(180deg, rgba(0, 198, 255, 0.06) 0%, transparent 100%);
            border-bottom: 1px solid var(--border-glass);
            position: relative;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            top: 20%;
            right: 5%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 198, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-banner-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 40px;
        }
        .category-banner-text {
            flex: 1;
            min-width: 0;
        }
        .category-banner-image {
            flex-shrink: 0;
            width: 220px;
            height: 160px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
        }
        .category-banner-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-ice);
            background: rgba(0, 198, 255, 0.1);
            border: 1px solid rgba(0, 198, 255, 0.2);
            margin-bottom: 14px;
        }
        .category-banner h1 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 12px;
            line-height: 1.3;
            letter-spacing: 0.01em;
        }
        .category-banner p {
            font-size: 0.98rem;
            color: var(--text-secondary);
            margin: 0;
            max-width: 700px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 16px 0 0;
            font-size: 0.82rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition-base);
        }
        .breadcrumb a:hover {
            color: var(--accent-ice);
        }
        .breadcrumb .separator {
            color: var(--text-muted);
            opacity: 0.5;
        }
        .breadcrumb .current {
            color: var(--accent-ice);
        }
        .main-content {
            padding: 48px 0 64px;
        }
        .section-block {
            margin-bottom: 56px;
        }
        .section-block:last-child {
            margin-bottom: 0;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .section-header h2 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0;
            letter-spacing: 0.01em;
        }
        .section-header .section-sub {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .section-title-group {
            flex: 1;
            min-width: 0;
        }
        .btn-more {
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-ice);
            border: 1px solid var(--border-glow);
            background: rgba(0, 198, 255, 0.08);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-more:hover {
            background: rgba(0, 198, 255, 0.15);
            box-shadow: var(--shadow-glow);
            color: var(--accent-ice);
        }
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .article-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-4px);
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 24px rgba(0, 180, 255, 0.25);
        }
        .article-card-image {
            height: 170px;
            overflow: hidden;
            position: relative;
        }
        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .article-card:hover .article-card-image img {
            transform: scale(1.04);
        }
        .article-card-body {
            padding: 18px 18px 16px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .article-card-meta .tag {
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(0, 198, 255, 0.1);
            color: var(--accent-ice);
            border: 1px solid rgba(0, 198, 255, 0.2);
        }
        .article-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 8px;
            line-height: 1.4;
            transition: color var(--transition-base);
        }
        .article-card:hover .article-card-title {
            color: var(--accent-ice);
        }
        .article-card-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin: 0 0 12px;
            line-height: 1.7;
            flex: 1;
        }
        .article-card-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-base);
        }
        .article-card-link:hover {
            color: var(--accent-ice);
            gap: 8px;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .step-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .step-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-glow);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 20px rgba(0, 180, 255, 0.2);
        }
        .step-number {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 10px;
            line-height: 1;
        }
        .step-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-base);
        }
        .tag-cloud .tag-item:hover {
            color: var(--accent-ice);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            background: rgba(0, 198, 255, 0.08);
        }
        .featured-panel {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            display: flex;
            gap: 28px;
            align-items: stretch;
            transition: all var(--transition-smooth);
        }
        .featured-panel:hover {
            border-color: var(--border-glow);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 24px rgba(0, 180, 255, 0.2);
        }
        .featured-panel-image {
            flex-shrink: 0;
            width: 280px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-glass);
        }
        .featured-panel-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .featured-panel-content {
            flex: 1;
            min-width: 0;
        }
        .featured-panel-content h3 {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 10px;
            line-height: 1.4;
        }
        .featured-panel-content p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin: 0 0 14px;
            line-height: 1.75;
        }
        .data-snapshot-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .data-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }
        .data-card:hover {
            transform: translateY(-3px);
            border-color: var(--border-glow);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3), 0 0 18px rgba(0, 180, 255, 0.2);
        }
        .data-card .data-value {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .data-card .data-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .rule-section {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }
        .rule-section h3 {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 16px;
        }
        .rule-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .rule-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .rule-list li .rule-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(0, 198, 255, 0.1);
            border: 1px solid rgba(0, 198, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: var(--accent-cyan);
            margin-top: 4px;
        }
        .faq-section {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }
        .faq-section h3 {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 16px;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-question {
            padding: 14px 18px;
            background: rgba(255, 255, 255, 0.03);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-primary);
            transition: all var(--transition-base);
            user-select: none;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(0, 198, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--accent-cyan);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 18px 14px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.75;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .subscribe-cta {
            background: linear-gradient(135deg, rgba(0, 198, 255, 0.12), rgba(0, 123, 255, 0.08));
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            box-shadow: var(--shadow-card);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .subscribe-cta::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 198, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .subscribe-cta h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 10px;
            position: relative;
            z-index: 1;
        }
        .subscribe-cta p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin: 0 0 20px;
            position: relative;
            z-index: 1;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 460px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
            justify-content: center;
        }
        .subscribe-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            font-size: 0.9rem;
            transition: all var(--transition-base);
        }
        .subscribe-form input:focus {
            border-color: var(--border-glow);
            box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
        }
        .subscribe-form input::placeholder {
            color: var(--text-muted);
        }
        .btn-primary {
            padding: 12px 28px;
            border-radius: var(--radius-pill);
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-deep));
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-smooth);
            white-space: nowrap;
            border: none;
        }
        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(0, 198, 255, 0.5);
            outline-offset: 2px;
        }
        .site-footer {
            background: rgba(10, 26, 47, 0.95);
            border-top: 1px solid var(--border-glass);
            padding: 48px 0 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 14px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-secondary);
            transition: all var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: var(--accent-ice);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-glass);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            font-size: 0.82rem;
            color: var(--text-muted);
            align-items: center;
            text-align: center;
        }
        .footer-bottom p {
            margin: 0;
        }
        .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition-base);
        }
        .footer-bottom a:hover {
            color: var(--accent-ice);
        }
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-snapshot-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-panel {
                flex-direction: column;
            }
            .featured-panel-image {
                width: 100%;
                height: 200px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            .header-actions .header-search {
                display: none;
            }
            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
                width: 38px;
                height: 38px;
                border-radius: 10px;
                border: 1px solid var(--border-glass);
                color: var(--text-primary);
                font-size: 1.1rem;
                flex-shrink: 0;
            }
            .header-channel-row {
                display: none;
                flex-direction: column;
                align-items: stretch;
                padding: 8px 0 16px;
            }
            .header-channel-row.open {
                display: flex;
            }
            .nav-link {
                padding: 10px 16px;
                border-radius: var(--radius-sm);
                justify-content: center;
            }
            .nav-link.active::after {
                display: none;
            }
            .category-banner {
                padding: 40px 0 28px;
            }
            .category-banner-inner {
                flex-direction: column;
                gap: 20px;
            }
            .category-banner-image {
                width: 100%;
                height: 140px;
            }
            .category-banner h1 {
                font-size: 1.5rem;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .data-snapshot-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .rule-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .data-snapshot-grid {
                grid-template-columns: 1fr;
            }
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .category-banner h1 {
                font-size: 1.3rem;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input {
                min-width: 100%;
            }
            .btn-primary {
                width: 100%;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}