/* roulang page: index */
:root {
            --bg-primary: #0d0f1e;
            --bg-secondary: #151833;
            --bg-card: #151833;
            --bg-elevated: #1b1f3d;
            --accent-cyan: #00e5c7;
            --accent-purple: #7c4dff;
            --accent-magenta: #ff2d78;
            --text-primary: #f5f7ff;
            --text-body: #c9cfe5;
            --text-muted: #8a92b2;
            --border-cyan: rgba(0, 229, 199, 0.28);
            --border-cyan-strong: rgba(0, 229, 199, 0.55);
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-default: 0 8px 24px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.55), 0 0 24px rgba(0, 229, 199, 0.12);
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "Roboto Mono", "JetBrains Mono", monospace;
            --gradient-cta: linear-gradient(135deg, #ff2d78 0%, #7c4dff 100%);
            --gradient-accent: linear-gradient(90deg, #00e5c7 0%, #7c4dff 100%);
            --section-gap: 88px;
            --section-gap-mobile: 48px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: #4dffeb;
        }

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

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

        h1, h2, h3, h4, h5 {
            font-family: var(--font-sans);
            color: var(--text-primary);
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
        }

        h1 {
            font-size: clamp(2rem, 4.5vw, 3.1rem);
            letter-spacing: -0.01em;
        }

        h2 {
            font-size: clamp(1.5rem, 2.8vw, 2.1rem);
            margin-bottom: 1rem;
        }

        h3 {
            font-size: 1.2rem;
            margin-bottom: 0.6rem;
        }

        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        section {
            padding-top: var(--section-gap);
            padding-bottom: var(--section-gap);
        }

        .bg-alt {
            background-color: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 0.75rem;
            font-weight: 600;
        }

        .section-title {
            font-size: clamp(1.5rem, 2.6vw, 2rem);
            margin-bottom: 0.75rem;
            position: relative;
            padding-bottom: 0.6rem;
        }

        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 54px;
            height: 3px;
            background: var(--gradient-accent);
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 2.2rem;
            line-height: 1.8;
        }

        .text-mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        /* Header / Nav */
        .site-header {
            background-color: rgba(13, 15, 30, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 1030;
        }

        .masthead {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.85rem 0;
            gap: 1.5rem;
        }

        .masthead-brand {
            font-size: clamp(1.5rem, 2.5vw, 1.85rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .masthead-brand .brand-mark {
            color: var(--accent-cyan);
            font-size: 1.4rem;
        }

        .masthead-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-shrink: 0;
        }

        .masthead-actions .icon-btn {
            background: none;
            border: none;
            color: var(--text-muted);
            font-size: 1.1rem;
            cursor: pointer;
            padding: 0.35rem;
            border-radius: 50%;
            transition: color 0.2s, background-color 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .masthead-actions .icon-btn:hover {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.08);
        }

        .masthead-actions .auth-link {
            color: var(--text-body);
            font-size: 0.9rem;
            text-decoration: none;
            padding: 0.4rem 0.8rem;
            border-radius: var(--radius-sm);
            transition: color 0.2s, background-color 0.2s;
            white-space: nowrap;
        }

        .masthead-actions .auth-link:hover {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.08);
        }

        .masthead-actions .subscribe-btn {
            background: var(--gradient-cta);
            color: #fff;
            border: none;
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: box-shadow 0.25s, transform 0.15s;
            white-space: nowrap;
        }

        .masthead-actions .subscribe-btn:hover {
            box-shadow: 0 0 20px rgba(255, 45, 120, 0.45);
            transform: translateY(-1px);
        }

        .nav-divider {
            border: 0;
            height: 1px;
            background: rgba(255, 255, 255, 0.08);
            margin: 0;
        }

        .channel-nav {
            padding: 0.5rem 0;
        }

        .channel-nav-list {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .channel-nav-item {
            display: flex;
            align-items: center;
        }

        .channel-nav-link {
            display: inline-block;
            padding: 0.55rem 1rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: color 0.2s, background-color 0.2s;
            white-space: nowrap;
        }

        .channel-nav-link:hover {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.06);
        }

        .channel-nav-link.active {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.1);
            font-weight: 600;
        }

        .channel-separator {
            width: 1px;
            height: 18px;
            background: rgba(255, 255, 255, 0.12);
            margin: 0 0.6rem;
            flex-shrink: 0;
        }

        /* Mobile nav toggle */
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-primary);
            font-size: 1.3rem;
            padding: 0.35rem 0.6rem;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: border-color 0.2s, color 0.2s;
        }

        .navbar-toggler-custom:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        /* Hero */
        .hero-section {
            position: relative;
            padding: 4rem 0 5rem;
            background-image: url('/assets/images/9fd4a44fc7c10f9c.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: var(--text-primary);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 15, 30, 0.92) 0%, rgba(13, 15, 30, 0.75) 45%, rgba(13, 15, 30, 0.6) 100%);
            z-index: 1;
        }

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

        .hero-inner {
            max-width: 680px;
            padding-top: 1.5rem;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(0, 229, 199, 0.12);
            border: 1px solid var(--border-cyan);
            color: var(--accent-cyan);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            padding: 0.35rem 0.95rem;
            border-radius: 100px;
            margin-bottom: 1.2rem;
        }

        .hero-section h1 {
            font-size: clamp(2.1rem, 5vw, 3.3rem);
            margin-bottom: 1.1rem;
            line-height: 1.2;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
        }

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-body);
            max-width: 600px;
            margin-bottom: 1.8rem;
            line-height: 1.85;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2.2rem;
        }

        .btn-primary-custom {
            background: var(--gradient-cta);
            color: #fff;
            border: none;
            padding: 0.75rem 1.7rem;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: box-shadow 0.25s, transform 0.15s, filter 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            text-decoration: none;
        }

        .btn-primary-custom:hover {
            color: #fff;
            box-shadow: 0 0 28px rgba(255, 45, 120, 0.5);
            transform: translateY(-2px);
            filter: brightness(1.08);
        }

        .btn-outline-custom {
            background: transparent;
            color: var(--accent-cyan);
            border: 1.5px solid var(--accent-cyan);
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-sm);
            font-weight: 650;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background-color 0.25s, color 0.25s, box-shadow 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            text-decoration: none;
        }

        .btn-outline-custom:hover {
            background-color: rgba(0, 229, 199, 0.12);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 229, 199, 0.25);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 2.2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 1.4rem;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 0.1rem;
        }

        .hero-stat-value {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-cyan);
            font-family: var(--font-mono);
            line-height: 1;
        }

        .hero-stat-unit {
            font-size: 0.85rem;
            color: var(--text-muted);
            letter-spacing: 0.04em;
        }

        .hero-float-cards {
            position: absolute;
            right: 2rem;
            top: 50%;
            transform: translateY(-50%);
            display: flex;
            flex-direction: column;
            gap: 1rem;
            z-index: 2;
        }

        .hero-float-card {
            width: 210px;
            background: rgba(21, 24, 51, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
        }

        .hero-float-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 48px rgba(0, 0, 0, 0.6);
            border-color: var(--border-cyan-strong);
        }

        .hero-float-card img {
            width: 100%;
            height: 110px;
            object-fit: cover;
        }

        .hero-float-card .float-card-body {
            padding: 0.8rem 0.9rem;
        }

        .hero-float-card .float-card-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.2rem;
        }

        .hero-float-card .float-card-info {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* Ticker */
        .ticker-section {
            background-color: #0a0c1a;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 0.7rem 0;
            overflow: hidden;
        }

        .ticker-wrap {
            display: flex;
            align-items: center;
            gap: 2rem;
            white-space: nowrap;
            animation: ticker-scroll 30s linear infinite;
        }

        .ticker-wrap:hover {
            animation-play-state: paused;
        }

        @keyframes ticker-scroll {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        .ticker-item {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.88rem;
            color: var(--text-body);
            flex-shrink: 0;
        }

        .ticker-item .ticker-time {
            color: var(--accent-cyan);
            font-family: var(--font-mono);
            font-size: 0.8rem;
            font-weight: 600;
        }

        .ticker-item .ticker-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-magenta);
            flex-shrink: 0;
        }

        /* Cards general */
        .card-elevated {
            background-color: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            transition: box-shadow 0.3s, border-color 0.3s, transform 0.25s;
            height: 100%;
        }

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

        /* Schedule cards */
        .schedule-card {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            overflow: hidden;
        }

        .schedule-card img {
            width: 100%;
            height: 150px;
            object-fit: cover;
            border-radius: var(--radius-sm);
        }

        .schedule-matchup {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 700;
            color: var(--text-primary);
            font-size: 1rem;
        }

        .schedule-vs {
            color: var(--accent-cyan);
            font-family: var(--font-mono);
            font-size: 0.9rem;
        }

        .schedule-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .badge-tag {
            background: rgba(124, 77, 255, 0.15);
            color: var(--accent-purple);
            border: 1px solid rgba(124, 77, 255, 0.35);
            padding: 0.2rem 0.65rem;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        .badge-cyan {
            background: rgba(0, 229, 199, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 229, 199, 0.3);
            padding: 0.2rem 0.65rem;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .badge-magenta {
            background: rgba(255, 45, 120, 0.1);
            color: var(--accent-magenta);
            border: 1px solid rgba(255, 45, 120, 0.3);
            padding: 0.2rem 0.65rem;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* Service cards */
        .service-card {
            text-align: left;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .service-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            background: rgba(0, 229, 199, 0.1);
            color: var(--accent-cyan);
            margin-bottom: 0.3rem;
        }

        .service-card h3 {
            font-size: 1.05rem;
            margin-bottom: 0.3rem;
        }

        .service-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* Data board */
        .data-board {
            background: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-lg);
            padding: 2.2rem 2rem;
            position: relative;
            overflow: hidden;
        }

        .data-board::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-accent);
        }

        .data-item {
            text-align: center;
            padding: 0.75rem 0.5rem;
        }

        .data-value {
            font-size: 2.2rem;
            font-weight: 800;
            font-family: var(--font-mono);
            color: var(--accent-cyan);
            line-height: 1.05;
        }

        .data-value.magenta {
            color: var(--accent-magenta);
        }

        .data-value.purple {
            color: var(--accent-purple);
        }

        .data-unit {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: block;
            margin-top: 0.3rem;
        }

        /* Steps */
        .step-item {
            display: flex;
            gap: 1.2rem;
            position: relative;
            padding-bottom: 1.5rem;
        }

        .step-item:last-child {
            padding-bottom: 0;
        }

        .step-marker {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(0, 229, 199, 0.12);
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-family: var(--font-mono);
            font-size: 1rem;
        }

        .step-body h4 {
            font-size: 1rem;
            margin-bottom: 0.3rem;
        }

        .step-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        .step-line {
            position: absolute;
            left: 19px;
            top: 42px;
            bottom: 0;
            width: 2px;
            background: rgba(0, 229, 199, 0.2);
        }

        /* Classic matches */
        .classic-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            height: 260px;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }

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

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

        .classic-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(13, 15, 30, 0.9) 0%, rgba(13, 15, 30, 0.3) 60%, transparent 100%);
        }

        .classic-card-info {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 1.2rem;
            z-index: 1;
        }

        .classic-card-info h4 {
            font-size: 1.05rem;
            margin-bottom: 0.25rem;
            color: var(--text-primary);
        }

        .classic-card-info p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
        }

        .classic-hover-data {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(13, 15, 30, 0.82);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            opacity: 0;
            transition: opacity 0.3s;
            z-index: 2;
        }

        .classic-card:hover .classic-hover-data {
            opacity: 1;
        }

        .classic-hover-data .hover-stat {
            font-size: 1.3rem;
            font-weight: 800;
            font-family: var(--font-mono);
            color: var(--accent-cyan);
        }

        .classic-hover-data .hover-label {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* News list */
        .news-list-item {
            display: flex;
            gap: 1rem;
            padding: 1.1rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background-color 0.2s, padding-left 0.2s;
            cursor: pointer;
        }

        .news-list-item:hover {
            background-color: rgba(255, 255, 255, 0.02);
            padding-left: 0.5rem;
        }

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

        .news-list-item .news-date {
            font-size: 0.78rem;
            font-family: var(--font-mono);
            color: var(--text-muted);
            flex-shrink: 0;
            padding-top: 0.25rem;
        }

        .news-list-item h4 {
            font-size: 0.98rem;
            margin-bottom: 0.25rem;
        }

        .news-list-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        .editor-pick-card {
            background: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: box-shadow 0.3s, border-color 0.3s;
        }

        .editor-pick-card:hover {
            border-color: var(--border-cyan-strong);
            box-shadow: var(--shadow-hover);
        }

        .editor-pick-card img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        .editor-pick-body {
            padding: 1.4rem;
        }

        .editor-pick-body h3 {
            font-size: 1.1rem;
            margin-bottom: 0.4rem;
        }

        .editor-pick-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* Player cards */
        .player-card {
            background: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow 0.3s, border-color 0.3s, transform 0.25s;
            height: 100%;
        }

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

        .player-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .player-card-body {
            padding: 1.2rem;
        }

        .player-card-body h3 {
            font-size: 1rem;
            margin-bottom: 0.15rem;
        }

        .player-role {
            font-size: 0.8rem;
            color: var(--accent-cyan);
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .player-stat {
            font-size: 0.8rem;
            font-family: var(--font-mono);
            color: var(--text-muted);
            margin-bottom: 0.4rem;
        }

        .player-card-body p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.55;
        }

        /* Partners */
        .partner-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            justify-content: center;
        }

        .partner-logo {
            width: 110px;
            height: 54px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.72rem;
            color: var(--text-muted);
            letter-spacing: 0.04em;
            transition: border-color 0.25s, color 0.25s;
        }

        .partner-logo:hover {
            border-color: rgba(0, 229, 199, 0.35);
            color: var(--accent-cyan);
        }

        /* FAQ */
        .accordion-custom .accordion-item {
            background-color: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-md);
            margin-bottom: 0.8rem;
            overflow: hidden;
        }

        .accordion-custom .accordion-button {
            background-color: var(--bg-card);
            color: var(--text-primary);
            font-weight: 600;
            box-shadow: none;
            padding: 1.1rem 1.3rem;
            font-size: 0.95rem;
            border: none;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background-color: var(--bg-elevated);
            color: var(--accent-cyan);
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            outline: none;
            border: none;
        }

        .accordion-custom .accordion-button::after {
            filter: brightness(0) invert(0.8);
        }

        .accordion-custom .accordion-body {
            background-color: var(--bg-card);
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.75;
            padding: 1.1rem 1.3rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        /* Guarantee strip */
        .guarantee-strip {
            background: linear-gradient(135deg, rgba(0, 229, 199, 0.06) 0%, rgba(124, 77, 255, 0.1) 100%);
            border: 1px solid rgba(0, 229, 199, 0.2);
            border-radius: var(--radius-lg);
            padding: 2.2rem 2rem;
        }

        .guarantee-item {
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
        }

        .guarantee-item i {
            font-size: 1.3rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
            margin-top: 0.15rem;
        }

        .guarantee-item h4 {
            font-size: 0.95rem;
            margin-bottom: 0.2rem;
        }

        .guarantee-item p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* Live section */
        .live-main-card {
            background: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: box-shadow 0.3s, border-color 0.3s;
        }

        .live-main-card:hover {
            border-color: var(--border-cyan-strong);
            box-shadow: var(--shadow-hover);
        }

        .live-main-card img {
            width: 100%;
            height: 260px;
            object-fit: cover;
        }

        .live-main-body {
            padding: 1.4rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }

        .live-main-body h3 {
            font-size: 1.05rem;
            margin-bottom: 0.2rem;
        }

        .live-main-body p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
        }

        .live-status {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(255, 45, 120, 0.12);
            color: var(--accent-magenta);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.3rem 0.8rem;
            border-radius: 100px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .live-status .status-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent-magenta);
            animation: pulse-dot 1.2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(1.4); }
        }

        .live-mini-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow 0.3s, border-color 0.3s;
            cursor: pointer;
        }

        .live-mini-card:hover {
            border-color: var(--border-cyan-strong);
            box-shadow: var(--shadow-hover);
        }

        .live-mini-card img {
            width: 100%;
            height: 130px;
            object-fit: cover;
        }

        .live-mini-body {
            padding: 0.9rem 1rem;
        }

        .live-mini-body h4 {
            font-size: 0.9rem;
            margin-bottom: 0.15rem;
        }

        .live-mini-body p {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* Contact form */
        .contact-section {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
        }

        .form-control-custom {
            background-color: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-primary);
            border-radius: var(--radius-sm);
            padding: 0.75rem 1rem;
            font-size: 0.9rem;
            transition: border-color 0.25s, box-shadow 0.25s;
        }

        .form-control-custom:focus {
            background-color: rgba(255, 255, 255, 0.06);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(0, 229, 199, 0.12);
            color: var(--text-primary);
            outline: none;
        }

        .form-control-custom::placeholder {
            color: var(--text-muted);
        }

        .form-select-custom {
            background-color: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-body);
            border-radius: var(--radius-sm);
            padding: 0.75rem 1rem;
            font-size: 0.9rem;
        }

        .form-select-custom:focus {
            background-color: rgba(255, 255, 255, 0.06);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(0, 229, 199, 0.12);
            color: var(--text-primary);
        }

        .social-links-row {
            display: flex;
            gap: 1.2rem;
            margin-top: 1.5rem;
            flex-wrap: wrap;
        }

        .social-link {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            color: var(--text-muted);
            font-size: 0.85rem;
            padding: 0.45rem 1rem;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 100px;
            transition: color 0.25s, border-color 0.25s, background-color 0.25s;
        }

        .social-link:hover {
            color: var(--accent-cyan);
            border-color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.06);
        }

        /* Footer */
        .site-footer {
            background-color: #080a16;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 2.5rem 0 2rem;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
            letter-spacing: -0.02em;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            margin-top: 0.8rem;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 0.85rem;
            text-decoration: none;
            transition: color 0.2s;
        }

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

        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 1.2rem;
            padding-top: 1.2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-beian span {
            display: inline-flex;
            align-items: center;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-float-cards {
                display: none;
            }
            .hero-inner {
                max-width: 100%;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 48px;
            }
            section {
                padding-top: var(--section-gap);
                padding-bottom: var(--section-gap);
            }
            .masthead {
                flex-wrap: wrap;
                gap: 0.5rem;
            }
            .masthead-brand {
                font-size: 1.4rem;
            }
            .masthead-actions {
                gap: 0.5rem;
            }
            .masthead-actions .auth-link {
                display: none;
            }
            .masthead-actions .subscribe-btn {
                padding: 0.4rem 0.8rem;
                font-size: 0.75rem;
            }
            .navbar-toggler-custom {
                display: inline-block;
                margin-left: auto;
            }
            .channel-nav {
                display: none;
                padding: 0.75rem 0;
            }
            .channel-nav.open {
                display: block;
            }
            .channel-nav-list {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.2rem;
            }
            .channel-separator {
                display: none;
            }
            .channel-nav-link {
                display: block;
                width: 100%;
                padding: 0.65rem 0.8rem;
            }
            .hero-section {
                padding: 2.5rem 0 3rem;
            }
            .hero-section h1 {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.92rem;
            }
            .hero-actions {
                gap: 0.7rem;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                padding: 0.6rem 1.3rem;
                font-size: 0.85rem;
            }
            .hero-stats {
                gap: 1.4rem;
                flex-wrap: wrap;
            }
            .hero-stat-value {
                font-size: 1.3rem;
            }
            .schedule-card img {
                height: 130px;
            }
            .classic-card {
                height: 220px;
            }
            .editor-pick-card img {
                height: 200px;
            }
            .live-main-card img {
                height: 190px;
            }
            .contact-section {
                padding: 1.8rem 1.4rem;
            }
            .data-board {
                padding: 1.5rem 1.2rem;
            }
            .data-value {
                font-size: 1.6rem;
            }
            .guarantee-strip {
                padding: 1.6rem 1.4rem;
            }
            .footer-beian {
                flex-direction: column;
                gap: 0.5rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .masthead-brand {
                font-size: 1.2rem;
            }
            .masthead-actions .subscribe-btn {
                display: none;
            }
            .hero-section h1 {
                font-size: 1.5rem;
            }
            .hero-desc {
                font-size: 0.85rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 1rem;
                flex-direction: column;
                border-top: none;
                padding-top: 0.8rem;
            }
            .hero-stat {
                flex-direction: row;
                align-items: baseline;
                gap: 0.5rem;
            }
            .schedule-card img {
                height: 110px;
            }
            .classic-card {
                height: 190px;
            }
            .partner-logo {
                width: 90px;
                height: 48px;
                font-size: 0.65rem;
            }
            .step-item {
                gap: 0.8rem;
            }
            .step-marker {
                width: 34px;
                height: 34px;
                font-size: 0.85rem;
            }
            .step-line {
                left: 16px;
                top: 36px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0d0f1e;
            --bg-secondary: #151833;
            --bg-card: #151833;
            --bg-elevated: #1b1f3d;
            --accent-cyan: #00e5c7;
            --accent-purple: #7c4dff;
            --accent-magenta: #ff2d78;
            --text-primary: #f5f7ff;
            --text-body: #c9cfe5;
            --text-muted: #8a92b2;
            --border-cyan: rgba(0, 229, 199, 0.28);
            --border-cyan-strong: rgba(0, 229, 199, 0.55);
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-default: 0 8px 24px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.55), 0 0 24px rgba(0, 229, 199, 0.12);
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "Roboto Mono", "JetBrains Mono", monospace;
            --gradient-cta: linear-gradient(135deg, #ff2d78 0%, #7c4dff 100%);
            --gradient-accent: linear-gradient(90deg, #00e5c7 0%, #7c4dff 100%);
            --section-gap: 72px;
            --section-gap-mobile: 42px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
        }
        a:hover {
            color: #4dffeb;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        section {
            padding-top: var(--section-gap);
            padding-bottom: var(--section-gap);
        }
        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 0.75rem;
            font-weight: 600;
        }
        .section-title {
            font-size: clamp(1.5rem, 2.6vw, 2rem);
            margin-bottom: 0.75rem;
            position: relative;
            padding-bottom: 0.6rem;
            color: var(--text-primary);
        }
        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 54px;
            height: 3px;
            background: var(--gradient-accent);
            border-radius: 2px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 2.2rem;
            line-height: 1.8;
        }
        .text-mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        /* Header */
        .site-header {
            background-color: rgba(13, 15, 30, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 1030;
        }
        .masthead {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            gap: 1rem;
        }
        .masthead-brand {
            font-size: clamp(1.5rem, 2.5vw, 1.85rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .masthead-brand .brand-mark {
            color: var(--accent-cyan);
            font-size: 1.4rem;
        }
        .masthead-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .masthead-actions .icon-btn {
            background: none;
            border: none;
            color: var(--text-muted);
            font-size: 1.1rem;
            cursor: pointer;
            padding: 0.35rem;
            border-radius: 50%;
            transition: color 0.2s, background-color 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .masthead-actions .icon-btn:hover {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.08);
        }
        .masthead-actions .auth-link {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color 0.2s;
            white-space: nowrap;
        }
        .masthead-actions .auth-link:hover {
            color: var(--accent-cyan);
        }
        .masthead-actions .subscribe-btn {
            background: var(--gradient-cta);
            color: #fff;
            border: none;
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: box-shadow 0.25s, transform 0.15s;
            white-space: nowrap;
        }
        .masthead-actions .subscribe-btn:hover {
            box-shadow: 0 0 20px rgba(255, 45, 120, 0.45);
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 0.4rem;
            border-radius: var(--radius-sm);
        }
        .navbar-toggler-custom:hover {
            color: var(--accent-cyan);
        }
        .nav-divider {
            border: 0;
            height: 1px;
            background: rgba(255, 255, 255, 0.08);
            margin: 0;
        }
        .channel-nav {
            padding: 0.5rem 0;
        }
        .channel-nav-list {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .channel-nav-item {
            display: flex;
            align-items: center;
        }
        .channel-nav-link {
            display: inline-block;
            padding: 0.5rem 0.9rem;
            color: var(--text-muted);
            font-size: 0.92rem;
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: color 0.2s, background-color 0.2s;
            white-space: nowrap;
        }
        .channel-nav-link:hover {
            color: var(--accent-cyan);
        }
        .channel-nav-link.active {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.08);
            font-weight: 600;
        }
        .channel-separator {
            width: 1px;
            height: 16px;
            background: rgba(255, 255, 255, 0.15);
            display: inline-block;
            margin: 0 0.25rem;
        }

        /* Category Page Header */
        .category-header {
            padding: 3rem 0 1.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            background:
                radial-gradient(ellipse at 20% 20%, rgba(124, 77, 255, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 80%, rgba(0, 229, 199, 0.06) 0%, transparent 50%),
                var(--bg-primary);
        }
        .category-header h1 {
            font-size: clamp(1.8rem, 3.4vw, 2.6rem);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }
        .category-header .category-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 760px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            padding: 1rem 0;
            font-size: 0.88rem;
            color: var(--text-muted);
        }
        .breadcrumb-wrap a {
            color: var(--text-muted);
            transition: color 0.2s;
        }
        .breadcrumb-wrap a:hover {
            color: var(--accent-cyan);
        }
        .breadcrumb-wrap .separator {
            margin: 0 0.5rem;
            color: rgba(255, 255, 255, 0.25);
        }
        .breadcrumb-wrap .current {
            color: var(--accent-cyan);
        }

        /* Filter Bar */
        .filter-bar {
            padding: 1.25rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 112px;
            z-index: 50;
            background-color: rgba(13, 15, 30, 0.92);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .filter-tags {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .filter-tag {
            display: inline-block;
            padding: 0.4rem 0.9rem;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-muted);
            font-size: 0.82rem;
            cursor: pointer;
            transition: all 0.2s;
            background: transparent;
            white-space: nowrap;
        }
        .filter-tag:hover {
            color: var(--accent-cyan);
            border-color: var(--border-cyan);
        }
        .filter-tag.active {
            background-color: rgba(0, 229, 199, 0.12);
            border-color: var(--border-cyan-strong);
            color: var(--accent-cyan);
            font-weight: 600;
        }
        .filter-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-right: 0.25rem;
            font-weight: 500;
        }

        /* Article List Cards */
        .article-list-section {
            background-color: var(--bg-primary);
        }
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }
        .article-card {
            display: flex;
            gap: 1.25rem;
            background-color: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: border-color 0.25s, box-shadow 0.25s, transform 0.2s;
            box-shadow: var(--shadow-default);
        }
        .article-card:hover {
            border-color: var(--border-cyan);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .article-card-img {
            width: 220px;
            min-height: 160px;
            flex-shrink: 0;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .article-card-img .img-badge {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(6px);
            color: var(--accent-cyan);
            font-size: 0.72rem;
            padding: 0.25rem 0.6rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .article-card-body {
            padding: 1.25rem 1.25rem 1.25rem 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex: 1;
        }
        .article-card-title {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            line-height: 1.5;
            transition: color 0.2s;
        }
        .article-card:hover .article-card-title {
            color: var(--accent-cyan);
        }
        .article-card-summary {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0.75rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .article-card-meta .date {
            font-family: var(--font-mono);
        }
        .article-card-meta .tag {
            background: rgba(124, 77, 255, 0.15);
            color: #a88bff;
            padding: 0.15rem 0.55rem;
            border-radius: 4px;
            font-weight: 500;
            font-size: 0.72rem;
        }
        .load-more-wrap {
            text-align: center;
            margin-top: 2.25rem;
        }
        .load-more-btn {
            display: inline-block;
            padding: 0.6rem 2rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-cyan);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.88rem;
            transition: all 0.25s;
            background: transparent;
        }
        .load-more-btn:hover {
            background-color: rgba(0, 229, 199, 0.08);
            box-shadow: 0 0 16px rgba(0, 229, 199, 0.2);
            color: #4dffeb;
        }

        /* Featured Banner */
        .featured-banner {
            background:
                linear-gradient(135deg, rgba(124, 77, 255, 0.2) 0%, rgba(21, 24, 51, 0.95) 45%, rgba(13, 15, 30, 0.98) 100%),
                url('/assets/images/9fd4a44fc7c10f9c.webp') center/cover no-repeat;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(124, 77, 255, 0.35);
            padding: 2.25rem 2.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
            position: relative;
            overflow: hidden;
        }
        .featured-banner::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 229, 199, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .featured-banner-content {
            position: relative;
            z-index: 1;
        }
        .featured-banner-label {
            font-size: 0.78rem;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--accent-cyan);
            font-weight: 600;
            margin-bottom: 0.6rem;
        }
        .featured-banner h2 {
            font-size: clamp(1.4rem, 2.2vw, 1.8rem);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 0.65rem;
            line-height: 1.4;
        }
        .featured-banner p {
            color: var(--text-body);
            font-size: 0.95rem;
            max-width: 540px;
            margin-bottom: 0;
            line-height: 1.7;
        }
        .featured-banner-btn {
            display: inline-block;
            background: var(--gradient-cta);
            color: #fff;
            padding: 0.6rem 1.5rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.88rem;
            white-space: nowrap;
            position: relative;
            z-index: 1;
            transition: box-shadow 0.25s, transform 0.15s;
            border: none;
            cursor: pointer;
        }
        .featured-banner-btn:hover {
            box-shadow: 0 0 20px rgba(255, 45, 120, 0.4);
            transform: translateY(-1px);
            color: #fff;
        }

        /* Data Ranking */
        .rank-section {
            background-color: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-md);
            padding: 0.9rem 1.25rem;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: border-color 0.25s, background-color 0.25s;
        }
        .rank-item:hover {
            border-color: var(--border-cyan);
            background: rgba(0, 229, 199, 0.05);
        }
        .rank-number {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(0, 229, 199, 0.1);
            color: var(--accent-cyan);
            font-weight: 700;
            font-family: var(--font-mono);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 0.85rem;
        }
        .rank-name {
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.95rem;
            flex: 1;
        }
        .rank-stat {
            color: var(--text-muted);
            font-family: var(--font-mono);
            font-size: 0.85rem;
            white-space: nowrap;
        }
        .rank-bar {
            width: 160px;
            height: 6px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 3px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .rank-bar-inner {
            height: 100%;
            background: var(--gradient-accent);
            border-radius: 3px;
            transition: width 0.5s ease;
        }

        /* Topic Cards */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }
        .topic-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: border-color 0.25s, box-shadow 0.25s, transform 0.2s;
            box-shadow: var(--shadow-default);
        }
        .topic-card:hover {
            border-color: var(--border-cyan);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .topic-card-img {
            height: 140px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .topic-card-body {
            padding: 1.1rem 1.25rem 1.25rem;
        }
        .topic-card-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.4rem;
            line-height: 1.5;
        }
        .topic-card-text {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* Subscribe CTA */
        .subscribe-cta {
            background: linear-gradient(135deg, rgba(124, 77, 255, 0.18) 0%, rgba(21, 24, 51, 0.98) 50%, rgba(13, 15, 30, 1) 100%);
            border: 1px solid rgba(124, 77, 255, 0.3);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2.75rem;
            text-align: center;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
        }
        .subscribe-cta h2 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
        }
        .subscribe-cta p {
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 1.5rem;
            font-size: 0.95rem;
        }
        .subscribe-form {
            display: flex;
            gap: 0.75rem;
            max-width: 480px;
            margin: 0 auto;
        }
        .subscribe-form input {
            flex: 1;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-sm);
            padding: 0.65rem 1rem;
            color: var(--text-primary);
            font-size: 0.9rem;
            transition: border-color 0.25s, box-shadow 0.25s;
        }
        .subscribe-form input::placeholder {
            color: var(--text-muted);
        }
        .subscribe-form input:focus {
            outline: none;
            border-color: var(--border-cyan-strong);
            box-shadow: 0 0 0 3px rgba(0, 229, 199, 0.15);
        }
        .subscribe-form button {
            background: var(--gradient-cta);
            color: #fff;
            border: none;
            padding: 0.65rem 1.4rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.88rem;
            cursor: pointer;
            white-space: nowrap;
            transition: box-shadow 0.25s, transform 0.15s;
        }
        .subscribe-form button:hover {
            box-shadow: 0 0 20px rgba(255, 45, 120, 0.4);
            transform: translateY(-1px);
        }

        /* Footer */
        .site-footer {
            background-color: #0a0c18;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 2.5rem 0;
            margin-top: 2rem;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem;
            margin-bottom: 1.25rem;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 1.5rem;
            font-size: 0.78rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 1.25rem;
        }
        .footer-beian a {
            color: var(--text-muted);
            transition: color 0.2s;
        }
        .footer-beian a:hover {
            color: var(--accent-cyan);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-card-img {
                width: 180px;
                min-height: 140px;
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .rank-bar {
                width: 100px;
            }
        }
        @media (max-width: 768px) {
            .masthead-actions .auth-link,
            .masthead-actions .subscribe-btn {
                display: none;
            }
            .navbar-toggler-custom {
                display: inline-flex;
            }
            .channel-nav {
                display: none;
                padding: 0.5rem 0 0.75rem;
            }
            .channel-nav.open {
                display: block;
            }
            .channel-nav-list {
                flex-direction: column;
                align-items: stretch;
                gap: 0.15rem;
            }
            .channel-separator {
                display: none;
            }
            .channel-nav-link {
                display: block;
                padding: 0.65rem 1rem;
                font-size: 0.95rem;
            }
            .article-card {
                flex-direction: column;
            }
            .article-card-img {
                width: 100%;
                min-height: 180px;
                max-height: 220px;
            }
            .article-card-body {
                padding: 1rem 1.25rem 1.25rem;
            }
            .featured-banner {
                flex-direction: column;
                align-items: flex-start;
                padding: 1.75rem 1.5rem;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .rank-bar {
                width: 80px;
            }
            .rank-item {
                flex-wrap: wrap;
                gap: 0.6rem;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form button {
                width: 100%;
            }
            .filter-bar {
                top: 64px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --section-gap: 36px;
            }
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .masthead-brand {
                font-size: 1.25rem;
            }
            .masthead-brand .brand-mark {
                font-size: 1.1rem;
            }
            .category-header {
                padding: 2rem 0 1rem;
            }
            .article-card-img {
                min-height: 150px;
            }
            .article-card-title {
                font-size: 0.98rem;
            }
            .featured-banner {
                padding: 1.25rem 1.25rem;
            }
            .footer-beian {
                flex-direction: column;
                gap: 0.5rem;
            }
            .rank-item {
                padding: 0.7rem 0.9rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0d0f1e;
            --bg-secondary: #151833;
            --bg-card: #151833;
            --bg-elevated: #1b1f3d;
            --accent-cyan: #00e5c7;
            --accent-purple: #7c4dff;
            --accent-magenta: #ff2d78;
            --text-primary: #f5f7ff;
            --text-body: #c9cfe5;
            --text-muted: #8a92b2;
            --border-cyan: rgba(0, 229, 199, 0.28);
            --border-cyan-strong: rgba(0, 229, 199, 0.55);
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-default: 0 8px 24px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.55), 0 0 24px rgba(0, 229, 199, 0.12);
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "Roboto Mono", "JetBrains Mono", monospace;
            --gradient-cta: linear-gradient(135deg, #ff2d78 0%, #7c4dff 100%);
            --gradient-accent: linear-gradient(90deg, #00e5c7 0%, #7c4dff 100%);
            --section-gap: 48px;
            --section-gap-mobile: 40px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: #4dffeb;
        }

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

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

        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            margin-left: auto;
            margin-right: auto;
        }

        section {
            padding-top: var(--section-gap);
            padding-bottom: var(--section-gap);
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 0.75rem;
            font-weight: 600;
        }

        .section-title {
            font-size: clamp(1.5rem, 2.6vw, 2rem);
            margin-bottom: 0.75rem;
            position: relative;
            padding-bottom: 0.6rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.3;
        }

        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 54px;
            height: 3px;
            background: var(--gradient-accent);
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 2.2rem;
            line-height: 1.8;
        }

        .text-mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        /* Header / Nav */
        .site-header {
            background-color: rgba(13, 15, 30, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 1030;
        }

        .masthead {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 0.85rem;
            padding-bottom: 0.85rem;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .masthead-brand {
            font-size: clamp(1.5rem, 2.5vw, 1.85rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .masthead-brand .brand-mark {
            color: var(--accent-cyan);
            font-size: 1.4rem;
        }

        .masthead-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .masthead-actions .icon-btn {
            background: none;
            border: none;
            color: var(--text-muted);
            font-size: 1.1rem;
            cursor: pointer;
            padding: 0.35rem;
            border-radius: 50%;
            transition: color 0.2s, background-color 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .masthead-actions .icon-btn:hover {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.08);
        }

        .masthead-actions .auth-link {
            color: var(--text-muted);
            font-size: 0.85rem;
            padding: 0.35rem 0.6rem;
            white-space: nowrap;
            transition: color 0.2s;
        }

        .masthead-actions .auth-link:hover {
            color: var(--accent-cyan);
        }

        .masthead-actions .subscribe-btn {
            background: var(--gradient-cta);
            color: #fff;
            border: none;
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: box-shadow 0.25s, transform 0.15s;
            white-space: nowrap;
        }

        .masthead-actions .subscribe-btn:hover {
            box-shadow: 0 0 20px rgba(255, 45, 120, 0.45);
            transform: translateY(-1px);
        }

        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid var(--border-cyan);
            color: var(--accent-cyan);
            font-size: 1.2rem;
            padding: 0.4rem 0.6rem;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: background-color 0.2s;
        }

        .navbar-toggler-custom:hover {
            background-color: rgba(0, 229, 199, 0.08);
        }

        .nav-divider {
            border: 0;
            height: 1px;
            background: rgba(255, 255, 255, 0.08);
            margin: 0;
        }

        .channel-nav {
            padding: 0.5rem 0;
        }

        .channel-nav-list {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .channel-nav-item {
            display: flex;
            align-items: center;
        }

        .channel-nav-link {
            display: inline-block;
            padding: 0.55rem 1rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
            transition: color 0.2s, background-color 0.2s;
            white-space: nowrap;
        }

        .channel-nav-link:hover {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.06);
        }

        .channel-nav-link.active {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.1);
            box-shadow: inset 0 -2px 0 var(--accent-cyan);
        }

        .channel-separator {
            width: 1px;
            height: 18px;
            background: rgba(255, 255, 255, 0.12);
            display: inline-block;
            flex-shrink: 0;
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            padding: 1rem 0 0;
            font-size: 0.85rem;
        }

        .breadcrumb-wrap .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
            gap: 0.4rem;
        }

        .breadcrumb-wrap .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--text-muted);
        }

        .breadcrumb-wrap .breadcrumb li a {
            color: var(--text-muted);
            transition: color 0.2s;
        }

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

        .breadcrumb-wrap .breadcrumb li.current {
            color: var(--text-primary);
        }

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

        /* Category Page Header */
        .cat-page-header {
            padding-top: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            background: linear-gradient(180deg, rgba(124, 77, 255, 0.08) 0%, rgba(13, 15, 30, 0) 100%);
        }

        .cat-page-header h1 {
            font-size: clamp(1.8rem, 3.4vw, 2.6rem);
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 0.75rem;
            line-height: 1.25;
            letter-spacing: -0.01em;
        }

        .cat-page-header .cat-description {
            font-size: 1.02rem;
            color: var(--text-muted);
            max-width: 820px;
            line-height: 1.85;
            margin-bottom: 0;
        }

        /* Filter/Sort Bar */
        .filter-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.6rem;
            padding: 1rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .filter-bar .filter-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-right: 0.3rem;
            white-space: nowrap;
        }

        .filter-bar .filter-tag {
            display: inline-block;
            padding: 0.35rem 0.9rem;
            font-size: 0.82rem;
            font-weight: 500;
            border-radius: 20px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: var(--text-muted);
            cursor: pointer;
            transition: all 0.2s;
            white-space: nowrap;
        }

        .filter-bar .filter-tag:hover {
            border-color: var(--border-cyan-strong);
            color: var(--accent-cyan);
        }

        .filter-bar .filter-tag.active {
            background: rgba(0, 229, 199, 0.1);
            border-color: var(--border-cyan-strong);
            color: var(--accent-cyan);
        }

        /* Cards Grid */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow 0.3s, border-color 0.3s, transform 0.2s;
            box-shadow: var(--shadow-default);
            display: flex;
            flex-direction: column;
        }

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

        .article-card .card-img {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-elevated);
        }

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

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

        .article-card .card-img .card-tag-overlay {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            background: rgba(13, 15, 30, 0.85);
            border: 1px solid var(--border-cyan-strong);
            color: var(--accent-cyan);
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.25rem 0.7rem;
            border-radius: 4px;
            letter-spacing: 0.06em;
        }

        .article-card .card-body {
            padding: 1.1rem 1.3rem 1.3rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 0.5rem;
            transition: color 0.2s;
        }

        .article-card:hover .card-title {
            color: var(--accent-cyan);
        }

        .article-card .card-summary {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0.9rem;
            flex: 1;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.78rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .article-card .card-meta .date {
            font-family: var(--font-mono);
        }

        .article-card .card-meta .tag {
            background: rgba(124, 77, 255, 0.18);
            color: #b3a0ff;
            padding: 0.15rem 0.6rem;
            border-radius: 4px;
            font-size: 0.72rem;
        }

        /* Featured Spotlight */
        .featured-spotlight {
            background: var(--bg-elevated);
            border: 1px solid var(--border-cyan-strong);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-default);
            display: grid;
            grid-template-columns: 1fr 1fr;
            min-height: 260px;
        }

        .featured-spotlight .featured-img {
            position: relative;
            overflow: hidden;
            min-height: 260px;
        }

        .featured-spotlight .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
        }

        .featured-spotlight .featured-content {
            padding: 2rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .featured-spotlight .featured-label {
            font-size: 0.75rem;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--accent-magenta);
            font-weight: 600;
            margin-bottom: 0.6rem;
        }

        .featured-spotlight .featured-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
            line-height: 1.35;
        }

        .featured-spotlight .featured-summary {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 1.1rem;
        }

        .featured-spotlight .featured-link {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: gap 0.2s;
        }

        .featured-spotlight .featured-link:hover {
            gap: 0.7rem;
        }

        /* Data Ranking */
        .data-ranking {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.2rem;
        }

        .data-ranking .data-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-md);
            padding: 1.2rem 1.4rem;
            transition: border-color 0.3s;
        }

        .data-ranking .data-item:hover {
            border-color: var(--border-cyan);
        }

        .data-ranking .data-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0.4rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .data-ranking .data-bar-bg {
            background: rgba(255, 255, 255, 0.06);
            height: 8px;
            border-radius: 4px;
            overflow: hidden;
            margin-bottom: 0.5rem;
        }

        .data-ranking .data-bar-fill {
            height: 100%;
            background: var(--gradient-accent);
            border-radius: 4px;
            transition: width 1.2s ease;
        }

        .data-ranking .data-value {
            font-family: var(--font-mono);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--accent-cyan);
            line-height: 1;
            margin-bottom: 0.2rem;
        }

        .data-ranking .data-unit {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }

        .data-ranking .data-note {
            font-size: 0.72rem;
            color: var(--text-muted);
            opacity: 0.7;
        }

        /* Topic Aggregation */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.2rem;
        }

        .topic-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow 0.3s, border-color 0.3s, transform 0.2s;
            box-shadow: var(--shadow-default);
        }

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

        .topic-card .topic-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--bg-elevated);
        }

        .topic-card .topic-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s;
        }

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

        .topic-card .topic-body {
            padding: 1rem 1.2rem 1.2rem;
        }

        .topic-card .topic-title {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.4rem;
            transition: color 0.2s;
            line-height: 1.4;
        }

        .topic-card:hover .topic-title {
            color: var(--accent-cyan);
        }

        .topic-card .topic-sub {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Subscribe CTA */
        .subscribe-cta {
            background: linear-gradient(135deg, rgba(124, 77, 255, 0.14) 0%, rgba(0, 229, 199, 0.05) 100%);
            border: 1px solid var(--border-cyan-strong);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            text-align: center;
            box-shadow: var(--shadow-default);
        }

        .subscribe-cta .cta-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
        }

        .subscribe-cta .cta-sub {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            line-height: 1.7;
        }

        .subscribe-cta .cta-form {
            display: flex;
            gap: 0.8rem;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .subscribe-cta .cta-input {
            flex: 1;
            min-width: 220px;
            background: rgba(13, 15, 30, 0.8);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-sm);
            padding: 0.65rem 1rem;
            color: var(--text-primary);
            font-size: 0.9rem;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .subscribe-cta .cta-input::placeholder {
            color: #5a6382;
        }

        .subscribe-cta .cta-input:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(0, 229, 199, 0.15);
        }

        .subscribe-cta .cta-btn {
            background: var(--gradient-cta);
            color: #fff;
            border: none;
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: box-shadow 0.25s, transform 0.15s;
            white-space: nowrap;
        }

        .subscribe-cta .cta-btn:hover {
            box-shadow: 0 0 20px rgba(255, 45, 120, 0.45);
            transform: translateY(-1px);
        }

        /* Load More */
        .load-more-wrap {
            text-align: center;
            padding-top: 1.5rem;
        }

        .load-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            border: 1px solid var(--border-cyan-strong);
            color: var(--accent-cyan);
            padding: 0.6rem 1.8rem;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.2s, box-shadow 0.25s;
        }

        .load-more-btn:hover {
            background: rgba(0, 229, 199, 0.08);
            box-shadow: 0 0 16px rgba(0, 229, 199, 0.2);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 2.5rem 0 2rem;
            margin-top: var(--section-gap);
        }

        .site-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 1.2rem;
            letter-spacing: -0.01em;
        }

        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem 1.5rem;
            margin-bottom: 1.5rem;
        }

        .site-footer .footer-links a {
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: color 0.2s;
        }

        .site-footer .footer-links a:hover {
            color: var(--accent-cyan);
        }

        .site-footer .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem 1.2rem;
            font-size: 0.78rem;
            color: #5a6382;
        }

        .site-footer .footer-beian a {
            color: #5a6382;
            text-decoration: underline;
            transition: color 0.2s;
        }

        .site-footer .footer-beian a:hover {
            color: var(--accent-cyan);
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .cards-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.2rem;
            }

            .featured-spotlight {
                grid-template-columns: 1fr 1fr;
            }

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

        @media (max-width: 767.98px) {
            :root {
                --section-gap: 32px;
            }

            section {
                padding-top: 2rem;
                padding-bottom: 2rem;
            }

            .masthead {
                flex-wrap: wrap;
            }

            .navbar-toggler-custom {
                display: inline-flex;
            }

            .masthead-actions {
                display: none;
                width: 100%;
                justify-content: space-between;
                padding-top: 0.6rem;
                border-top: 1px solid rgba(255, 255, 255, 0.06);
            }

            .masthead-actions.open {
                display: flex;
            }

            .channel-nav {
                display: none;
            }

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

            .channel-nav-list {
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding-top: 0.5rem;
            }

            .channel-nav-item {
                width: 100%;
            }

            .channel-nav-link {
                display: block;
                width: 100%;
                padding: 0.7rem 0.5rem;
                text-align: left;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }

            .channel-separator {
                display: none;
            }

            .cards-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }

            .featured-spotlight {
                grid-template-columns: 1fr;
            }

            .featured-spotlight .featured-img {
                min-height: 200px;
                position: relative;
            }

            .featured-spotlight .featured-img img {
                position: absolute;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                object-fit: cover;
            }

            .featured-spotlight .featured-content {
                padding: 1.5rem;
            }

            .data-ranking {
                grid-template-columns: 1fr;
                gap: 1rem;
            }

            .topic-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }

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

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

            .cat-page-header h1 {
                font-size: 1.5rem;
            }

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

        @media (max-width: 519.98px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .masthead-brand {
                font-size: 1.3rem;
            }

            .filter-bar {
                gap: 0.4rem;
            }

            .filter-bar .filter-tag {
                padding: 0.3rem 0.7rem;
                font-size: 0.75rem;
            }

            .article-card .card-body {
                padding: 0.9rem 1rem 1rem;
            }

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

            .site-footer {
                padding: 1.8rem 0 1.5rem;
            }

            .site-footer .footer-beian {
                flex-direction: column;
                gap: 0.3rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0d0f1e;
            --bg-secondary: #151833;
            --bg-card: #151833;
            --bg-elevated: #1b1f3d;
            --accent-cyan: #00e5c7;
            --accent-purple: #7c4dff;
            --accent-magenta: #ff2d78;
            --text-primary: #f5f7ff;
            --text-body: #c9cfe5;
            --text-muted: #8a92b2;
            --border-cyan: rgba(0, 229, 199, 0.28);
            --border-cyan-strong: rgba(0, 229, 199, 0.55);
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-default: 0 8px 24px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.55), 0 0 24px rgba(0, 229, 199, 0.12);
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "Roboto Mono", "JetBrains Mono", monospace;
            --gradient-cta: linear-gradient(135deg, #ff2d78 0%, #7c4dff 100%);
            --gradient-accent: linear-gradient(90deg, #00e5c7 0%, #7c4dff 100%);
            --section-gap: 48px;
            --section-gap-mobile: 40px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: #4dffeb;
        }

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

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

        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        section {
            padding-top: var(--section-gap);
            padding-bottom: var(--section-gap);
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 0.75rem;
            font-weight: 600;
        }

        .section-title {
            font-size: clamp(1.5rem, 2.6vw, 2rem);
            margin-bottom: 0.75rem;
            position: relative;
            padding-bottom: 0.6rem;
            color: var(--text-primary);
            font-weight: 700;
        }

        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 54px;
            height: 3px;
            background: var(--gradient-accent);
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 2.2rem;
            line-height: 1.8;
        }

        .text-mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        /* Header / Nav */
        .site-header {
            background-color: rgba(13, 15, 30, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 1030;
        }

        .masthead {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.85rem 0;
            gap: 1rem;
        }

        .masthead-brand {
            font-size: clamp(1.5rem, 2.5vw, 1.85rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .masthead-brand .brand-mark {
            color: var(--accent-cyan);
            font-size: 1.4rem;
        }

        .masthead-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .masthead-actions .auth-link {
            color: var(--text-body);
            font-size: 0.9rem;
            white-space: nowrap;
            padding: 0.3rem 0.5rem;
        }

        .masthead-actions .auth-link:hover {
            color: var(--accent-cyan);
        }

        .masthead-actions .icon-btn {
            background: none;
            border: none;
            color: var(--text-muted);
            font-size: 1.1rem;
            cursor: pointer;
            padding: 0.35rem;
            border-radius: 50%;
            transition: color 0.2s, background-color 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .masthead-actions .icon-btn:hover {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.08);
        }

        .masthead-actions .subscribe-btn {
            background: var(--gradient-cta);
            color: #fff;
            border: none;
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: box-shadow 0.25s, transform 0.15s;
            white-space: nowrap;
        }

        .masthead-actions .subscribe-btn:hover {
            box-shadow: 0 0 20px rgba(255, 45, 120, 0.45);
            transform: translateY(-1px);
        }

        .navbar-toggler-custom {
            background: none;
            border: 1px solid var(--border-cyan);
            color: var(--text-primary);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.7rem;
            font-size: 1.2rem;
            cursor: pointer;
            display: none;
        }

        .navbar-toggler-custom:hover {
            background-color: rgba(0, 229, 199, 0.08);
        }

        .nav-divider {
            border: 0;
            height: 1px;
            background: rgba(255, 255, 255, 0.08);
            margin: 0;
        }

        .channel-nav {
            padding: 0.5rem 0;
        }

        .channel-nav-list {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .channel-nav-item {
            display: flex;
            align-items: center;
        }

        .channel-nav-link {
            display: inline-block;
            padding: 0.55rem 1rem;
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            border-radius: var(--radius-sm);
            transition: color 0.2s, background-color 0.2s;
            white-space: nowrap;
        }

        .channel-nav-link:hover {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.06);
        }

        .channel-nav-link.active {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.12);
            font-weight: 600;
        }

        .channel-separator {
            width: 1px;
            height: 18px;
            background: rgba(255, 255, 255, 0.12);
            display: inline-block;
            margin: 0 0.25rem;
        }

        /* Breadcrumb */
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb-custom .separator {
            color: var(--text-muted);
            opacity: 0.6;
        }

        .breadcrumb-custom .current {
            color: var(--accent-cyan);
        }

        /* Category Header */
        .category-header {
            padding: 2.5rem 0 1.5rem;
        }

        .category-header h1 {
            font-size: clamp(2rem, 4vw, 2.8rem);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }

        .category-header .header-desc {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 800px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        /* Filter Bar */
        .filter-bar {
            background-color: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-md);
            padding: 1rem 1.25rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }

        .filter-bar .filter-label {
            color: var(--text-muted);
            font-size: 0.85rem;
            white-space: nowrap;
            margin-right: 0.25rem;
        }

        .filter-tag {
            background: transparent;
            border: 1px solid rgba(0, 229, 199, 0.2);
            color: var(--text-body);
            padding: 0.35rem 0.9rem;
            border-radius: 20px;
            font-size: 0.82rem;
            cursor: pointer;
            transition: all 0.2s;
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.06);
        }

        .filter-tag.active {
            border-color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.12);
            color: var(--accent-cyan);
            font-weight: 600;
        }

        /* Guide Card */
        .guide-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow 0.25s, transform 0.2s, border-color 0.25s;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .guide-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background-color: var(--bg-elevated);
        }

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

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

        .guide-card .card-tag {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            background: rgba(13, 15, 30, 0.85);
            border: 1px solid var(--border-cyan);
            color: var(--accent-cyan);
            padding: 0.2rem 0.7rem;
            border-radius: 20px;
            font-size: 0.72rem;
            font-weight: 600;
            backdrop-filter: blur(6px);
        }

        .guide-card .card-body {
            padding: 1.25rem 1.25rem 1.5rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .guide-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
            line-height: 1.5;
        }

        .guide-card .card-summary {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 1rem;
            flex: 1;
        }

        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 0.75rem;
        }

        .guide-card .card-meta .date {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        .guide-card .card-meta .tag-list {
            display: flex;
            gap: 0.4rem;
            flex-wrap: wrap;
        }

        .guide-card .card-meta .tag-list span {
            background-color: rgba(124, 77, 255, 0.15);
            color: var(--accent-purple);
            padding: 0.15rem 0.6rem;
            border-radius: 4px;
            font-size: 0.72rem;
            font-weight: 500;
        }

        /* Featured Card */
        .featured-card {
            background-color: var(--bg-elevated);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: box-shadow 0.25s, border-color 0.25s;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .featured-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-hover);
        }

        .featured-card .featured-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 21 / 9;
            background-color: #0d0f1e;
        }

        .featured-card .featured-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.9;
        }

        .featured-card .featured-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 15, 30, 0.2) 0%, rgba(13, 15, 30, 0.85) 100%);
            display: flex;
            align-items: flex-end;
            padding: 1.25rem;
        }

        .featured-card .featured-content {
            padding: 1.5rem;
        }

        .featured-card .featured-label {
            color: var(--accent-magenta);
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            margin-bottom: 0.5rem;
            display: inline-block;
        }

        .featured-card .featured-title {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.7rem;
            line-height: 1.5;
        }

        .featured-card .featured-summary {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 1rem;
        }

        .featured-card .featured-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.8rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .featured-card .featured-meta .featured-tag {
            background-color: rgba(255, 45, 120, 0.15);
            color: var(--accent-magenta);
            padding: 0.15rem 0.7rem;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* Data Ranking */
        .data-ranking {
            background-color: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-md);
            padding: 1.5rem;
        }

        .data-ranking .rank-item {
            margin-bottom: 1.25rem;
        }

        .data-ranking .rank-item:last-child {
            margin-bottom: 0;
        }

        .data-ranking .rank-info {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
        }

        .data-ranking .rank-name {
            color: var(--text-primary);
            font-weight: 600;
        }

        .data-ranking .rank-value {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .data-ranking .rank-bar {
            height: 6px;
            background-color: rgba(255, 255, 255, 0.08);
            border-radius: 3px;
            overflow: hidden;
        }

        .data-ranking .rank-bar .rank-bar-fill {
            height: 100%;
            background: var(--gradient-accent);
            border-radius: 3px;
            transition: width 0.6s ease;
        }

        .data-note {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 1rem;
            font-style: italic;
        }

        /* Topic Cards */
        .topic-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow 0.25s, transform 0.2s, border-color 0.25s;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .topic-card .topic-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--bg-elevated);
        }

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

        .topic-card .topic-body {
            padding: 1rem 1.25rem 1.25rem;
        }

        .topic-card .topic-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.4rem;
        }

        .topic-card .topic-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0.6rem;
        }

        .topic-card .topic-count {
            font-size: 0.78rem;
            color: var(--accent-cyan);
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        /* Subscribe CTA */
        .subscribe-cta {
            background-color: var(--bg-elevated);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .subscribe-cta::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 2px;
            background: var(--gradient-accent);
            border-radius: 1px;
        }

        .subscribe-cta .cta-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
        }

        .subscribe-cta .cta-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 1.5rem;
            line-height: 1.8;
        }

        .subscribe-cta .cta-form {
            display: flex;
            max-width: 480px;
            margin: 0 auto;
            gap: 0.5rem;
        }

        .subscribe-cta .cta-input {
            flex: 1;
            background-color: rgba(13, 15, 30, 0.7);
            border: 1px solid var(--border-cyan);
            color: var(--text-primary);
            padding: 0.65rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            transition: border-color 0.2s;
        }

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

        .subscribe-cta .cta-input:focus {
            border-color: var(--accent-cyan);
            outline: none;
        }

        .subscribe-cta .cta-btn {
            background: var(--gradient-cta);
            color: #fff;
            border: none;
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            white-space: nowrap;
            transition: box-shadow 0.25s, transform 0.15s;
        }

        .subscribe-cta .cta-btn:hover {
            box-shadow: 0 0 20px rgba(255, 45, 120, 0.45);
            transform: translateY(-1px);
        }

        /* Load More */
        .load-more-wrap {
            text-align: center;
            margin-top: 2rem;
        }

        .load-more-link {
            display: inline-block;
            padding: 0.7rem 2rem;
            border: 1px solid var(--border-cyan-strong);
            color: var(--accent-cyan);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: background-color 0.25s, color 0.25s;
        }

        .load-more-link:hover {
            background-color: rgba(0, 229, 199, 0.1);
            color: #4dffeb;
        }

        /* Footer */
        .site-footer {
            background-color: #0a0b16;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 2.5rem 0;
            margin-top: var(--section-gap);
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            margin-bottom: 1rem;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 1.5rem;
            margin-bottom: 1.25rem;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color 0.2s;
        }

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

        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem 1.25rem;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.25rem;
            align-items: center;
        }

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

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

        /* Responsive */
        @media (max-width: 992px) {
            .guide-card .card-body {
                padding: 1rem 1rem 1.25rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 40px;
            }

            .masthead-actions .auth-link {
                display: none;
            }

            .navbar-toggler-custom {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .masthead-actions {
                gap: 0.5rem;
            }

            .masthead-actions .subscribe-btn {
                padding: 0.4rem 0.8rem;
                font-size: 0.78rem;
            }

            .channel-nav {
                display: none;
                padding: 0.75rem 0;
                border-top: 1px solid rgba(255, 255, 255, 0.06);
            }

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

            .channel-nav-list {
                flex-direction: column;
                align-items: stretch;
                gap: 0.25rem;
            }

            .channel-separator {
                display: none;
            }

            .channel-nav-link {
                display: block;
                padding: 0.7rem 0.5rem;
                font-size: 1rem;
            }

            .filter-bar {
                padding: 0.75rem 1rem;
                gap: 0.5rem;
            }

            .filter-tag {
                font-size: 0.75rem;
                padding: 0.3rem 0.7rem;
            }

            .featured-card .featured-img-wrap {
                aspect-ratio: 16 / 9;
            }

            .featured-card .featured-title {
                font-size: 1.15rem;
            }

            .subscribe-cta {
                padding: 2rem 1.25rem;
            }

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

            .subscribe-cta .cta-btn {
                width: 100%;
            }

            .footer-beian {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }
        }

        @media (max-width: 520px) {
            .masthead {
                padding: 0.65rem 0;
            }

            .masthead-brand {
                font-size: 1.3rem;
            }

            .masthead-actions .subscribe-btn {
                display: none;
            }

            .category-header h1 {
                font-size: 1.8rem;
            }

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

/* roulang page: category4 */
:root {
            --bg-primary: #0d0f1e;
            --bg-secondary: #151833;
            --bg-card: #151833;
            --bg-elevated: #1b1f3d;
            --accent-cyan: #00e5c7;
            --accent-purple: #7c4dff;
            --accent-magenta: #ff2d78;
            --text-primary: #f5f7ff;
            --text-body: #c9cfe5;
            --text-muted: #8a92b2;
            --border-cyan: rgba(0, 229, 199, 0.28);
            --border-cyan-strong: rgba(0, 229, 199, 0.55);
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-default: 0 8px 24px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.55), 0 0 24px rgba(0, 229, 199, 0.12);
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "Roboto Mono", "JetBrains Mono", monospace;
            --gradient-cta: linear-gradient(135deg, #ff2d78 0%, #7c4dff 100%);
            --gradient-accent: linear-gradient(90deg, #00e5c7 0%, #7c4dff 100%);
            --section-gap: 64px;
            --section-gap-mobile: 40px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            background-image: radial-gradient(circle at 15% 10%, rgba(124, 77, 255, 0.08) 0%, transparent 32%),
                radial-gradient(circle at 85% 90%, rgba(0, 229, 199, 0.05) 0%, transparent 30%);
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
        }
        a:hover {
            color: #4dffeb;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        section {
            padding-top: var(--section-gap);
            padding-bottom: var(--section-gap);
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 0.75rem;
            font-weight: 600;
        }

        .section-title {
            font-size: clamp(1.5rem, 2.6vw, 2rem);
            margin-bottom: 0.75rem;
            position: relative;
            padding-bottom: 0.6rem;
            color: var(--text-primary);
            font-weight: 700;
            letter-spacing: -0.01em;
        }
        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 54px;
            height: 3px;
            background: var(--gradient-accent);
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 2.2rem;
            line-height: 1.8;
        }

        .text-mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        /* Header / Nav */
        .site-header {
            background-color: rgba(13, 15, 30, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 1030;
        }

        .masthead-brand {
            font-size: clamp(1.5rem, 2.5vw, 1.85rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .masthead-brand .brand-mark {
            color: var(--accent-cyan);
            font-size: 1.4rem;
        }
        .masthead-actions .icon-btn {
            background: none;
            border: none;
            color: var(--text-muted);
            font-size: 1.1rem;
            cursor: pointer;
            padding: 0.35rem;
            border-radius: 50%;
            transition: color 0.2s, background-color 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .masthead-actions .icon-btn:hover {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.08);
        }
        .masthead-actions .auth-link {
            color: var(--text-body);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            padding: 0.3rem 0.2rem;
        }
        .masthead-actions .auth-link:hover {
            color: var(--accent-cyan);
        }
        .masthead-actions .subscribe-btn {
            background: var(--gradient-cta);
            color: #fff;
            border: none;
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: box-shadow 0.25s, transform 0.15s;
            white-space: nowrap;
        }
        .masthead-actions .subscribe-btn:hover {
            box-shadow: 0 0 20px rgba(255, 45, 120, 0.45);
            transform: translateY(-1px);
        }

        .nav-divider {
            border: 0;
            height: 1px;
            background: rgba(255, 255, 255, 0.08);
            margin: 0;
        }

        .channel-nav {
            padding: 0.5rem 0;
        }
        .channel-nav-list {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .channel-nav-item {
            display: flex;
            align-items: center;
        }
        .channel-nav-link {
            display: inline-block;
            padding: 0.55rem 1rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            border-radius: 4px;
            transition: color 0.2s, background-color 0.2s;
            white-space: nowrap;
        }
        .channel-nav-link:hover {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.06);
        }
        .channel-nav-link.active {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.1);
        }
        .channel-separator {
            display: inline-block;
            width: 1px;
            height: 16px;
            background: rgba(255, 255, 255, 0.14);
            margin: 0 0.2rem;
        }

        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.25rem;
            transition: color 0.2s;
        }
        .navbar-toggler-custom:hover {
            color: var(--accent-cyan);
        }

        /* Breadcrumb */
        .breadcrumb-row {
            background-color: rgba(21, 24, 51, 0.6);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 0.75rem 0;
        }
        .breadcrumb-custom {
            margin: 0;
            padding: 0;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.88rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-custom .breadcrumb-separator {
            color: rgba(255, 255, 255, 0.25);
            font-size: 0.7rem;
        }
        .breadcrumb-custom a {
            color: var(--text-muted);
            transition: color 0.2s;
        }
        .breadcrumb-custom a:hover {
            color: var(--accent-cyan);
        }
        .breadcrumb-custom .current {
            color: var(--accent-cyan);
            font-weight: 500;
        }

        /* Page Header */
        .page-header {
            padding-top: 48px;
            padding-bottom: 28px;
            background: linear-gradient(180deg, rgba(21, 24, 51, 0.7) 0%, transparent 100%);
        }
        .page-header h1 {
            font-size: clamp(1.9rem, 3.4vw, 2.6rem);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        .page-header .page-desc {
            font-size: 1.02rem;
            color: var(--text-body);
            max-width: 780px;
            line-height: 1.85;
            margin-bottom: 0;
        }

        /* Filter Bar */
        .filter-bar {
            background: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-md);
            padding: 1rem 1.25rem;
            margin-bottom: 2rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.6rem;
        }
        .filter-bar .filter-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-right: 0.2rem;
        }
        .filter-tag {
            display: inline-block;
            padding: 0.35rem 0.9rem;
            border-radius: 20px;
            background: transparent;
            border: 1px solid rgba(0, 229, 199, 0.3);
            color: var(--text-body);
            font-size: 0.82rem;
            cursor: pointer;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 229, 199, 0.06);
        }
        .filter-tag.active {
            background: rgba(0, 229, 199, 0.15);
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 600;
        }

        /* Player Grid Cards */
        .player-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .player-card {
            background: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
            display: flex;
            flex-direction: column;
        }
        .player-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-cyan-strong);
            box-shadow: var(--shadow-hover);
        }
        .player-card .player-img {
            height: 210px;
            overflow: hidden;
            position: relative;
        }
        .player-card .player-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .player-card:hover .player-img img {
            transform: scale(1.05);
        }
        .player-card .player-img .position-tag {
            position: absolute;
            left: 12px;
            top: 12px;
            background: rgba(13, 15, 30, 0.85);
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.7rem;
            border-radius: 16px;
            letter-spacing: 0.04em;
        }
        .player-card .player-body {
            padding: 1.25rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .player-card .player-id {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.2rem;
            letter-spacing: -0.01em;
        }
        .player-card .player-team {
            font-size: 0.88rem;
            color: var(--accent-purple);
            font-weight: 500;
            margin-bottom: 0.75rem;
        }
        .player-card .player-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 0.9rem;
        }
        .player-card .player-stats {
            display: flex;
            gap: 1.2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 0.75rem;
            font-size: 0.85rem;
            color: var(--text-body);
        }
        .player-card .player-stats .stat-item {
            display: flex;
            flex-direction: column;
            gap: 0.1rem;
        }
        .player-card .player-stats .stat-value {
            font-family: var(--font-mono);
            font-weight: 700;
            color: var(--accent-cyan);
            font-size: 0.95rem;
        }
        .player-card .player-stats .stat-name {
            font-size: 0.72rem;
            color: var(--text-muted);
        }

        /* Editor Pick */
        .editor-pick {
            background: linear-gradient(135deg, rgba(21, 24, 51, 0.95) 0%, rgba(27, 31, 61, 0.9) 100%);
            border: 1px solid var(--border-cyan-strong);
            border-radius: var(--radius-lg);
            padding: 2rem;
            display: grid;
            grid-template-columns: 420px 1fr;
            gap: 2rem;
            align-items: center;
            box-shadow: var(--shadow-default);
        }
        .editor-pick .ep-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            height: 240px;
        }
        .editor-pick .ep-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .editor-pick .ep-content h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
        }
        .editor-pick .ep-content p {
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 0.6rem;
        }
        .editor-pick .ep-meta {
            display: flex;
            gap: 1rem;
            font-size: 0.82rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .editor-pick .ep-meta .badge-cyan {
            background: rgba(0, 229, 199, 0.12);
            color: var(--accent-cyan);
            padding: 0.2rem 0.7rem;
            border-radius: 14px;
            font-weight: 500;
        }

        /* Data Ranking */
        .ranking-box {
            background: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-md);
            padding: 1.5rem;
        }
        .ranking-box .ranking-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .ranking-box .ranking-title i {
            color: var(--accent-cyan);
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 0.6rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .rank-item:last-child {
            border-bottom: none;
        }
        .rank-item .rank-number {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 1.1rem;
            width: 36px;
            color: var(--accent-cyan);
            text-align: center;
        }
        .rank-item .rank-name {
            font-weight: 500;
            color: var(--text-primary);
            width: 120px;
        }
        .rank-item .rank-bar-wrapper {
            flex: 1;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 8px;
            height: 10px;
            overflow: hidden;
        }
        .rank-item .rank-bar {
            height: 100%;
            border-radius: 8px;
            background: var(--gradient-accent);
            transition: width 0.6s ease;
        }
        .rank-item .rank-value {
            font-family: var(--font-mono);
            font-weight: 600;
            color: var(--text-body);
            width: 52px;
            text-align: right;
        }

        /* Topic Aggregation */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }
        .topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
        }
        .topic-card:hover {
            transform: translateY(-3px);
            border-color: var(--border-cyan-strong);
            box-shadow: var(--shadow-hover);
        }
        .topic-card .topic-img {
            height: 160px;
            overflow: hidden;
        }
        .topic-card .topic-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s;
        }
        .topic-card:hover .topic-img img {
            transform: scale(1.05);
        }
        .topic-card .topic-body {
            padding: 1rem 1.15rem;
        }
        .topic-card .topic-title {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.98rem;
            margin-bottom: 0.35rem;
            line-height: 1.5;
        }
        .topic-card .topic-date {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* Subscribe CTA */
        .subscribe-cta {
            background: linear-gradient(135deg, rgba(21, 24, 51, 0.9) 0%, rgba(27, 31, 61, 0.85) 100%);
            border: 1px solid var(--border-cyan-strong);
            border-radius: var(--radius-lg);
            padding: 2.2rem;
            text-align: center;
            box-shadow: var(--shadow-default);
        }
        .subscribe-cta h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }
        .subscribe-cta p {
            color: var(--text-body);
            margin-bottom: 1.2rem;
            line-height: 1.7;
        }
        .subscribe-cta .cta-form {
            display: flex;
            gap: 0.6rem;
            justify-content: center;
            flex-wrap: wrap;
            max-width: 480px;
            margin: 0 auto;
        }
        .subscribe-cta .cta-form input {
            flex: 1;
            min-width: 200px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            padding: 0.65rem 1.1rem;
            color: var(--text-primary);
            font-size: 0.9rem;
            transition: border-color 0.2s, background-color 0.2s;
        }
        .subscribe-cta .cta-form input::placeholder {
            color: var(--text-muted);
        }
        .subscribe-cta .cta-form input:focus {
            outline: none;
            border-color: var(--accent-cyan);
            background: rgba(0, 229, 199, 0.05);
        }
        .subscribe-cta .cta-form button {
            background: var(--gradient-cta);
            color: #fff;
            border: none;
            padding: 0.65rem 1.4rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: box-shadow 0.25s, transform 0.15s;
            white-space: nowrap;
        }
        .subscribe-cta .cta-form button:hover {
            box-shadow: 0 0 20px rgba(255, 45, 120, 0.45);
            transform: translateY(-1px);
        }

        /* Buttons */
        .btn-outline-cyan {
            background: transparent;
            border: 1px solid var(--border-cyan-strong);
            color: var(--accent-cyan);
            border-radius: var(--radius-sm);
            padding: 0.55rem 1.4rem;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.2s;
            display: inline-block;
        }
        .btn-outline-cyan:hover {
            background: rgba(0, 229, 199, 0.1);
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 229, 199, 0.25);
        }

        /* Footer */
        .site-footer {
            background: #0a0c16;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 2.5rem 0 2rem;
            margin-top: 2rem;
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }
        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-bottom: 1.2rem;
        }
        .site-footer .footer-links a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: color 0.2s;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .site-footer .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            font-size: 0.78rem;
            color: rgba(138, 146, 178, 0.7);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 1.2rem;
        }
        .site-footer .footer-beian a {
            color: rgba(138, 146, 178, 0.7);
            transition: color 0.2s;
        }
        .site-footer .footer-beian a:hover {
            color: var(--accent-cyan);
        }

        /* Responsive */
        @media (max-width: 991px) {
            .player-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .editor-pick {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .editor-pick .ep-img {
                height: 200px;
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 40px;
            }
            .navbar-toggler-custom {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .masthead-actions {
                display: flex;
                align-items: center;
                gap: 0.4rem;
            }
            .masthead-actions .auth-link,
            .masthead-actions .subscribe-btn {
                display: none;
            }
            .channel-nav {
                display: none;
                padding: 0.5rem 0;
            }
            .channel-nav.open {
                display: block;
            }
            .channel-nav-list {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.15rem;
            }
            .channel-separator {
                display: none;
            }
            .channel-nav-link {
                padding: 0.6rem 0;
                font-size: 1rem;
                width: 100%;
            }
            .player-grid {
                grid-template-columns: 1fr;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .page-header {
                padding-top: 32px;
                padding-bottom: 18px;
            }
            .page-header h1 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .masthead-brand {
                font-size: 1.3rem;
            }
            .masthead-actions .icon-btn {
                font-size: 0.95rem;
            }
            .editor-pick {
                padding: 1.2rem;
            }
            .rank-item {
                gap: 0.5rem;
            }
            .rank-item .rank-name {
                width: 80px;
            }
            .subscribe-cta {
                padding: 1.5rem 1rem;
            }
        }

/* roulang page: category5 */
:root {
            --bg-primary: #0d0f1e;
            --bg-secondary: #151833;
            --bg-card: #151833;
            --bg-elevated: #1b1f3d;
            --accent-cyan: #00e5c7;
            --accent-purple: #7c4dff;
            --accent-magenta: #ff2d78;
            --text-primary: #f5f7ff;
            --text-body: #c9cfe5;
            --text-muted: #8a92b2;
            --border-cyan: rgba(0, 229, 199, 0.28);
            --border-cyan-strong: rgba(0, 229, 199, 0.55);
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-default: 0 8px 24px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.55), 0 0 24px rgba(0, 229, 199, 0.12);
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "Roboto Mono", "JetBrains Mono", monospace;
            --gradient-cta: linear-gradient(135deg, #ff2d78 0%, #7c4dff 100%);
            --gradient-accent: linear-gradient(90deg, #00e5c7 0%, #7c4dff 100%);
            --section-gap: 72px;
            --section-gap-mobile: 48px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
        }
        a:hover {
            color: #4dffeb;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        section {
            padding-top: var(--section-gap);
            padding-bottom: var(--section-gap);
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 0.75rem;
            font-weight: 600;
        }

        .section-title {
            font-size: clamp(1.5rem, 2.6vw, 2rem);
            margin-bottom: 0.75rem;
            position: relative;
            padding-bottom: 0.6rem;
            color: var(--text-primary);
            font-weight: 700;
        }
        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 54px;
            height: 3px;
            background: var(--gradient-accent);
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 2.2rem;
            line-height: 1.8;
        }

        .text-mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        /* Header / Nav */
        .site-header {
            background-color: rgba(13, 15, 30, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 1030;
        }
        .masthead {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            gap: 1rem;
        }
        .masthead-brand {
            font-size: clamp(1.5rem, 2.5vw, 1.85rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .masthead-brand .brand-mark {
            color: var(--accent-cyan);
            font-size: 1.4rem;
        }
        .masthead-actions {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .masthead-actions .icon-btn {
            background: none;
            border: none;
            color: var(--text-muted);
            font-size: 1.1rem;
            cursor: pointer;
            padding: 0.35rem;
            border-radius: 50%;
            transition: color 0.2s, background-color 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .masthead-actions .icon-btn:hover {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.08);
        }
        .masthead-actions .auth-link {
            color: var(--text-body);
            font-size: 0.85rem;
            padding: 0.3rem 0.6rem;
            white-space: nowrap;
        }
        .masthead-actions .auth-link:hover {
            color: var(--accent-cyan);
        }
        .masthead-actions .subscribe-btn {
            background: var(--gradient-cta);
            color: #fff;
            border: none;
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: box-shadow 0.25s, transform 0.15s;
            white-space: nowrap;
        }
        .masthead-actions .subscribe-btn:hover {
            box-shadow: 0 0 20px rgba(255, 45, 120, 0.45);
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            cursor: pointer;
            display: none;
            padding: 0.4rem;
            border-radius: 6px;
            transition: background-color 0.2s;
        }
        .navbar-toggler-custom:hover {
            background-color: rgba(255, 255, 255, 0.06);
        }
        .nav-divider {
            border: 0;
            height: 1px;
            background: rgba(255, 255, 255, 0.08);
            margin: 0;
        }
        .channel-nav {
            padding: 0.5rem 0;
        }
        .channel-nav-list {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .channel-nav-item {
            display: flex;
            align-items: center;
        }
        .channel-nav-link {
            display: inline-block;
            padding: 0.55rem 1rem;
            font-size: 0.9rem;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            font-weight: 500;
            white-space: nowrap;
            transition: color 0.2s, background-color 0.2s;
        }
        .channel-nav-link:hover {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.06);
        }
        .channel-nav-link.active {
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.1);
            font-weight: 600;
        }
        .channel-separator {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.16);
            display: inline-block;
            flex-shrink: 0;
        }

        /* Breadcrumb */
        .breadcrumb-custom {
            padding: 1.25rem 0 0;
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .breadcrumb-custom a {
            color: var(--text-muted);
        }
        .breadcrumb-custom a:hover {
            color: var(--accent-cyan);
        }
        .breadcrumb-custom .separator {
            color: #4a5070;
        }
        .breadcrumb-custom .current {
            color: var(--accent-cyan);
            font-weight: 500;
        }

        /* Category Page Header */
        .cat-page-header {
            padding: 2rem 0 2.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            background:
                radial-gradient(ellipse at top left, rgba(124, 77, 255, 0.08), transparent 55%),
                radial-gradient(ellipse at bottom right, rgba(0, 229, 199, 0.05), transparent 50%),
                var(--bg-primary);
        }
        .cat-page-header h1 {
            font-size: clamp(2rem, 4vw, 2.75rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
            line-height: 1.25;
        }
        .cat-page-header .cat-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 760px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* Filter Bar */
        .filter-bar {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 1rem 1.25rem;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-top: 2rem;
        }
        .filter-bar .filter-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-right: 0.25rem;
            white-space: nowrap;
        }
        .filter-bar .filter-tag {
            display: inline-block;
            padding: 0.4rem 0.9rem;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-body);
            font-size: 0.82rem;
            cursor: pointer;
            background: transparent;
            transition: border-color 0.2s, color 0.2s, background-color 0.2s;
            white-space: nowrap;
        }
        .filter-bar .filter-tag:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }
        .filter-bar .filter-tag.active {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background-color: rgba(0, 229, 199, 0.08);
        }

        /* Cards Grid */
        .data-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 229, 199, 0.16);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color 0.25s, box-shadow 0.25s, transform 0.2s;
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-default);
        }
        .data-card:hover {
            border-color: var(--border-cyan-strong);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .data-card .card-media {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-elevated);
        }
        .data-card .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .data-card:hover .card-media img {
            transform: scale(1.04);
        }
        .data-card .card-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(13, 15, 30, 0.82);
            border: 1px solid var(--border-cyan);
            border-radius: 4px;
            padding: 0.25rem 0.6rem;
            font-size: 0.72rem;
            color: var(--accent-cyan);
            font-weight: 600;
            letter-spacing: 0.04em;
        }
        .data-card .card-body-custom {
            padding: 1.1rem 1.25rem 1.25rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .data-card .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        .data-card .card-text {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0.75rem;
            line-height: 1.6;
            flex: 1;
        }
        .data-card .card-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.78rem;
            color: #6f7698;
            flex-wrap: wrap;
        }
        .data-card .card-meta i {
            color: var(--accent-cyan);
            margin-right: 0.2rem;
            font-size: 0.7rem;
        }
        .data-card .card-stat-mini {
            display: flex;
            gap: 0.75rem;
            margin-top: 0.75rem;
            padding-top: 0.75rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.78rem;
            color: var(--text-body);
        }
        .data-card .card-stat-mini span {
            background: rgba(0, 229, 199, 0.06);
            border-radius: 4px;
            padding: 0.2rem 0.5rem;
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        /* Editor Pick */
        .editor-pick {
            background: var(--bg-elevated);
            border: 1px solid rgba(0, 229, 199, 0.2);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-default);
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .editor-pick:hover {
            border-color: var(--border-cyan-strong);
            box-shadow: var(--shadow-hover);
        }
        .editor-pick .pick-media {
            position: relative;
            aspect-ratio: 2.4/1;
            overflow: hidden;
            background: var(--bg-elevated);
        }
        .editor-pick .pick-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .editor-pick .pick-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--gradient-cta);
            color: #fff;
            border-radius: 4px;
            padding: 0.3rem 0.8rem;
            font-size: 0.76rem;
            font-weight: 700;
            letter-spacing: 0.06em;
        }
        .editor-pick .pick-body {
            padding: 1.5rem 1.75rem 1.75rem;
        }
        .editor-pick .pick-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
        }
        .editor-pick .pick-desc {
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 1rem;
        }
        .editor-pick .pick-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem;
        }
        .editor-pick .pick-stat-item {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .editor-pick .pick-stat-item strong {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            color: var(--accent-cyan);
            font-size: 1.2rem;
            font-weight: 700;
            display: block;
        }

        /* Data Rankings */
        .rank-row {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 0.85rem 1rem;
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-sm);
            margin-bottom: 0.65rem;
            transition: border-color 0.2s, background-color 0.2s;
        }
        .rank-row:hover {
            border-color: rgba(0, 229, 199, 0.25);
            background-color: rgba(0, 229, 199, 0.03);
        }
        .rank-row .rank-num {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent-cyan);
            width: 2.5rem;
            text-align: center;
            flex-shrink: 0;
        }
        .rank-row .rank-name {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            flex-shrink: 0;
            min-width: 110px;
        }
        .rank-row .rank-bar-wrap {
            flex: 1;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            min-width: 140px;
        }
        .rank-row .rank-bar {
            height: 6px;
            border-radius: 3px;
            background: rgba(255, 255, 255, 0.07);
            flex: 1;
            overflow: hidden;
        }
        .rank-row .rank-bar-inner {
            height: 100%;
            border-radius: 3px;
            background: var(--gradient-accent);
            transition: width 0.6s ease;
        }
        .rank-row .rank-value {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            font-size: 0.82rem;
            color: var(--text-muted);
            white-space: nowrap;
        }

        /* Topic Cards */
        .topic-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color 0.25s, box-shadow 0.25s, transform 0.2s;
            height: 100%;
            box-shadow: var(--shadow-default);
        }
        .topic-card:hover {
            border-color: var(--border-cyan-strong);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .topic-card .topic-media {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-elevated);
        }
        .topic-card .topic-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .topic-card:hover .topic-media img {
            transform: scale(1.04);
        }
        .topic-card .topic-body {
            padding: 1rem 1.15rem 1.2rem;
        }
        .topic-card .topic-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.4rem;
            line-height: 1.4;
        }
        .topic-card .topic-date {
            font-size: 0.74rem;
            color: #6f7698;
        }

        /* CTA Section */
        .cta-section {
            background: var(--bg-card);
            border: 1px solid rgba(0, 229, 199, 0.15);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1.5rem;
            box-shadow: var(--shadow-default);
        }
        .cta-section .cta-text {
            flex: 1;
            min-width: 260px;
        }
        .cta-section .cta-text h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }
        .cta-section .cta-text p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 0;
        }
        .cta-section .cta-form {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .cta-section .cta-form input {
            background: var(--bg-elevated);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-sm);
            padding: 0.65rem 1rem;
            color: var(--text-primary);
            font-size: 0.9rem;
            min-width: 240px;
            transition: border-color 0.2s, box-shadow 0.2s;
            outline: none;
        }
        .cta-section .cta-form input::placeholder {
            color: #5a6080;
        }
        .cta-section .cta-form input:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 229, 199, 0.2);
        }
        .cta-section .cta-form .cta-btn {
            background: var(--gradient-cta);
            color: #fff;
            border: none;
            padding: 0.65rem 1.4rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: box-shadow 0.25s, transform 0.15s;
            white-space: nowrap;
        }
        .cta-section .cta-form .cta-btn:hover {
            box-shadow: 0 0 20px rgba(255, 45, 120, 0.4);
            transform: translateY(-1px);
        }

        /* Load more */
        .load-more-wrap {
            text-align: center;
            margin-top: 2rem;
        }
        .load-more-btn {
            display: inline-block;
            padding: 0.7rem 2.2rem;
            border: 1px solid var(--border-cyan);
            border-radius: var(--radius-sm);
            color: var(--accent-cyan);
            font-size: 0.9rem;
            font-weight: 600;
            background: transparent;
            cursor: pointer;
            transition: background-color 0.25s, border-color 0.25s, box-shadow 0.25s;
        }
        .load-more-btn:hover {
            background-color: rgba(0, 229, 199, 0.08);
            border-color: var(--border-cyan-strong);
            box-shadow: 0 0 16px rgba(0, 229, 199, 0.15);
            color: #4dffeb;
        }

        /* Footer */
        .site-footer {
            margin-top: var(--section-gap);
            padding: 3rem 0 2rem;
            background: #0a0c17;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }
        .site-footer .footer-links a {
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: color 0.2s;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .site-footer .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem 1.25rem;
            font-size: 0.75rem;
            color: #5a6080;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.5rem;
        }
        .site-footer .footer-beian a {
            color: #5a6080;
            transition: color 0.2s;
        }
        .site-footer .footer-beian a:hover {
            color: var(--accent-cyan);
        }

        /* Responsive */
        @media (max-width: 992px) {
            .masthead-actions .auth-link {
                display: none;
            }
            .masthead-actions .subscribe-btn {
                padding: 0.45rem 0.8rem;
                font-size: 0.78rem;
            }
            .editor-pick .pick-media {
                aspect-ratio: 2/1;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: var(--section-gap-mobile);
            }
            section {
                padding-top: var(--section-gap);
                padding-bottom: var(--section-gap);
            }
            .navbar-toggler-custom {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .masthead-actions {
                margin-left: auto;
            }
            .masthead-actions .subscribe-btn {
                display: none;
            }
            .masthead {
                gap: 0.5rem;
            }
            .masthead-brand {
                font-size: 1.25rem;
            }
            .channel-nav {
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
                padding: 0;
            }
            .channel-nav.show {
                max-height: 350px;
                padding: 0.5rem 0;
            }
            .channel-nav-list {
                flex-direction: column;
                align-items: stretch;
                gap: 0.15rem;
            }
            .channel-nav-item {
                width: 100%;
            }
            .channel-nav-link {
                display: block;
                padding: 0.7rem 1rem;
                text-align: center;
            }
            .channel-separator {
                display: none;
            }
            .filter-bar {
                padding: 0.85rem 1rem;
                gap: 0.45rem;
            }
            .filter-bar .filter-tag {
                padding: 0.3rem 0.7rem;
                font-size: 0.75rem;
            }
            .data-card .card-media {
                aspect-ratio: 2/1;
            }
            .editor-pick .pick-media {
                aspect-ratio: 1.6/1;
            }
            .editor-pick .pick-body {
                padding: 1.2rem 1.25rem 1.4rem;
            }
            .editor-pick .pick-title {
                font-size: 1.15rem;
            }
            .rank-row {
                flex-wrap: wrap;
                padding: 0.7rem 0.85rem;
                gap: 0.6rem;
            }
            .rank-row .rank-bar-wrap {
                flex-basis: 100%;
                order: 3;
            }
            .cta-section {
                padding: 1.75rem 1.25rem;
                flex-direction: column;
                text-align: center;
            }
            .cta-section .cta-form {
                justify-content: center;
                width: 100%;
            }
            .cta-section .cta-form input {
                min-width: 100%;
                width: 100%;
            }
            .cta-section .cta-form .cta-btn {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .masthead-brand {
                font-size: 1.1rem;
            }
            .masthead-actions .icon-btn {
                font-size: 0.95rem;
                padding: 0.25rem;
            }
            .cat-page-header h1 {
                font-size: 1.6rem;
            }
            .cat-page-header .cat-desc {
                font-size: 0.92rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .data-card .card-title {
                font-size: 0.95rem;
            }
            .editor-pick .pick-media {
                aspect-ratio: 1.4/1;
            }
        }

/* 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}