/* roulang page: index */
:root {
            --bg-primary: #0a0e14;
            --bg-secondary: #111720;
            --bg-card: #161c28;
            --bg-card-hover: #1c2332;
            --bg-nav: #0d1119;
            --neon-green: #00e054;
            --neon-green-bright: #39ff14;
            --neon-green-dim: #00b845;
            --gold: #f0c040;
            --gold-light: #f7d86c;
            --red-accent: #ff3b5c;
            --red-bright: #ff5a75;
            --text-primary: #e8eaed;
            --text-secondary: #b0b6be;
            --text-muted: #6b7280;
            --text-white: #f5f5f5;
            --border-subtle: #1e2532;
            --border-card: #232b3a;
            --border-glow: rgba(0, 224, 84, 0.25);
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 20px rgba(0, 224, 84, 0.15);
            --shadow-gold: 0 0 18px rgba(240, 192, 64, 0.12);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Monaco', monospace;
            --max-width: 1240px;
            --nav-height: 64px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        input {
            font-family: inherit;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-nav);
            border-bottom: 2px solid var(--border-subtle);
            height: var(--nav-height);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-sm);
        }

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

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--text-white);
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--neon-green);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0a0e14;
            font-weight: 900;
            font-size: 1.1rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow);
        }

        .nav-logo:hover {
            color: var(--neon-green-bright);
        }

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

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-links a.active {
            color: var(--neon-green-bright);
            background: rgba(0, 224, 84, 0.08);
            box-shadow: inset 0 0 0 1px rgba(0, 224, 84, 0.2);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--neon-green);
            border-radius: var(--radius-full);
            box-shadow: 0 0 10px var(--neon-green);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.9rem;
            background: var(--neon-green);
            color: #0a0e14 !important;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-glow);
        }

        .nav-cta-btn:hover {
            background: var(--neon-green-bright);
            box-shadow: 0 0 24px rgba(0, 224, 84, 0.3);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.5rem;
            padding: 6px;
            cursor: pointer;
            transition: color var(--transition-fast);
        }

        .nav-toggle:hover {
            color: var(--neon-green-bright);
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-nav);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px 20px;
                gap: 4px;
                border-bottom: 2px solid var(--border-subtle);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-base);
                z-index: 999;
            }

            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
            }

            .nav-links a {
                padding: 12px 18px;
                border-radius: var(--radius-md);
                font-size: 1rem;
                justify-content: center;
            }

            .nav-links a.active::after {
                display: none;
            }

            .nav-links a.active {
                box-shadow: inset 0 0 0 2px rgba(0, 224, 84, 0.3);
            }

            .nav-cta-btn {
                justify-content: center;
                margin-top: 6px;
            }

            .nav-toggle {
                display: block;
            }
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            padding: 80px 0 90px;
            background: radial-gradient(ellipse at 50% 20%, rgba(0, 180, 60, 0.08) 0%, transparent 65%),
                radial-gradient(ellipse at 80% 60%, rgba(240, 192, 64, 0.05) 0%, transparent 55%),
                var(--bg-primary);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -180px;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(0, 224, 84, 0.03);
            filter: blur(80px);
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 50px;
        }

        .hero-content {
            flex: 1;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            background: rgba(0, 224, 84, 0.1);
            border: 1px solid rgba(0, 224, 84, 0.25);
            color: var(--neon-green-bright);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hero-badge .pulse-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--neon-green-bright);
            animation: pulse-dot 1.6s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(57, 255, 20, 0.6);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(57, 255, 20, 0);
            }
        }

        .hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--text-white);
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .hero h1 .highlight {
            color: var(--neon-green-bright);
            position: relative;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 500px;
            line-height: 1.7;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 24px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .btn-primary {
            background: var(--neon-green);
            color: #0a0e14;
            box-shadow: var(--shadow-glow);
        }

        .btn-primary:hover {
            background: var(--neon-green-bright);
            box-shadow: 0 0 28px rgba(0, 224, 84, 0.35);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid var(--border-subtle);
        }

        .btn-outline:hover {
            border-color: var(--neon-green);
            color: var(--neon-green-bright);
            background: rgba(0, 224, 84, 0.05);
            box-shadow: var(--shadow-glow);
        }

        .hero-visual {
            flex: 0 0 420px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .score-card-hero {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 20px 22px;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-slow);
        }

        .score-card-hero:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow), var(--shadow-md);
        }

        .score-card-hero .league-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--gold);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }

        .score-card-hero .match-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
        }

        .score-card-hero .team {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-white);
            flex: 1;
        }

        .score-card-hero .team:last-child {
            text-align: right;
        }

        .score-card-hero .score-display {
            font-size: 2rem;
            font-weight: 900;
            color: var(--neon-green-bright);
            font-family: var(--font-mono);
            letter-spacing: 0.04em;
            min-width: 80px;
            text-align: center;
            text-shadow: 0 0 20px rgba(57, 255, 20, 0.4);
        }

        .score-card-hero .match-status {
            text-align: center;
            font-size: 0.8rem;
            color: var(--red-accent);
            font-weight: 700;
            margin-top: 4px;
            animation: blink-text 1.2s ease-in-out infinite;
        }

        @keyframes blink-text {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }

        @media (max-width: 1024px) {
            .hero .container {
                flex-direction: column;
                gap: 36px;
                text-align: center;
            }
            .hero-desc {
                max-width: 100%;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-visual {
                flex: 0 0 auto;
                width: 100%;
                max-width: 420px;
                margin: 0 auto;
            }
            .hero h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 520px) {
            .hero {
                padding: 50px 0 55px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .btn {
                padding: 11px 18px;
                font-size: 0.88rem;
            }
            .score-card-hero .score-display {
                font-size: 1.5rem;
                min-width: 60px;
            }
            .score-card-hero .team {
                font-size: 0.95rem;
            }
        }

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

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

        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--neon-green);
            margin-bottom: 8px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.55rem;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ========== LIVE SCORES STRIP ========== */
        .live-strip-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 28px 0;
        }

        .live-strip-header {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--red-accent);
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .live-strip-header .live-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--red-accent);
            animation: pulse-dot 1.4s ease-in-out infinite;
        }

        .live-strip-scroll {
            display: flex;
            gap: 14px;
            overflow-x: auto;
            padding-bottom: 8px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .live-strip-scroll::-webkit-scrollbar {
            height: 3px;
        }
        .live-strip-scroll::-webkit-scrollbar-track {
            background: transparent;
        }
        .live-strip-scroll::-webkit-scrollbar-thumb {
            background: var(--border-card);
            border-radius: var(--radius-full);
        }

        .live-strip-card {
            flex: 0 0 240px;
            scroll-snap-align: start;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            transition: all var(--transition-fast);
            min-width: 220px;
        }

        .live-strip-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }

        .live-strip-card .strip-league {
            font-size: 0.7rem;
            font-weight: 700;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 6px;
        }

        .live-strip-card .strip-teams {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 6px;
        }

        .live-strip-card .strip-team {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-white);
            flex: 1;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .live-strip-card .strip-score {
            font-weight: 900;
            font-size: 1.15rem;
            color: var(--neon-green-bright);
            font-family: var(--font-mono);
        }

        .live-strip-card .strip-time {
            font-size: 0.7rem;
            color: var(--red-accent);
            font-weight: 700;
            text-align: center;
            margin-top: 2px;
        }

        @media (max-width: 520px) {
            .live-strip-card {
                flex: 0 0 180px;
                min-width: 170px;
                padding: 10px 12px;
            }
            .live-strip-card .strip-team {
                font-size: 0.8rem;
            }
            .live-strip-card .strip-score {
                font-size: 1rem;
            }
        }

        /* ========== SERVICES GRID ========== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            transition: all var(--transition-base);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: transparent;
            transition: all var(--transition-base);
        }

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

        .service-card:hover::before {
            background: var(--neon-green);
            box-shadow: 0 0 12px var(--neon-green);
        }

        .service-card .service-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(0, 224, 84, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.4rem;
            color: var(--neon-green-bright);
            transition: all var(--transition-base);
        }

        .service-card:hover .service-icon {
            background: rgba(0, 224, 84, 0.2);
            box-shadow: var(--shadow-glow);
        }

        .service-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .service-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }

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

        @media (max-width: 520px) {
            .services-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .service-card {
                padding: 22px 16px;
            }
        }

        /* ========== LEAGUES ========== */
        .leagues-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }

        .league-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 20px 14px;
            text-align: center;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

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

        .league-card .league-flag {
            font-size: 2.4rem;
            margin-bottom: 8px;
            display: block;
        }

        .league-card .league-name {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-white);
        }

        .league-card .league-count {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        @media (max-width: 768px) {
            .leagues-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 10px;
            }
        }

        @media (max-width: 520px) {
            .leagues-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
            }
            .league-card {
                padding: 14px 8px;
            }
            .league-card .league-flag {
                font-size: 1.8rem;
            }
        }

        /* ========== STATS BAND ========== */
        .stats-band {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 40px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--neon-green-bright);
            font-family: var(--font-mono);
            letter-spacing: -0.02em;
            text-shadow: 0 0 18px rgba(57, 255, 20, 0.25);
        }

        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 4px;
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
            .stat-item .stat-label {
                font-size: 0.8rem;
            }
        }

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

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            transition: all var(--transition-base);
        }

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

        .feature-card .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(240, 192, 64, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--gold-light);
            margin-bottom: 14px;
        }

        .feature-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }

        .feature-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }

        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .feature-card {
                padding: 20px 16px;
            }
        }

        /* ========== CATEGORY ENTRY ========== */
        .category-entry-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .category-entry-card {
            display: flex;
            align-items: center;
            gap: 40px;
            background: var(--bg-card);
            border: 2px solid var(--border-card);
            border-radius: var(--radius-xl);
            padding: 40px 44px;
            transition: all var(--transition-slow);
            cursor: pointer;
            text-decoration: none;
            color: inherit;
        }

        .category-entry-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow), var(--shadow-lg);
            transform: translateY(-5px);
        }

        .category-entry-content {
            flex: 1;
        }

        .category-entry-content h2 {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .category-entry-content p {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .category-entry-visual {
            flex: 0 0 140px;
            height: 140px;
            border-radius: var(--radius-lg);
            background: rgba(0, 224, 84, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3.5rem;
            border: 2px dashed var(--border-card);
            transition: all var(--transition-base);
        }

        .category-entry-card:hover .category-entry-visual {
            border-color: var(--neon-green);
            background: rgba(0, 224, 84, 0.1);
        }

        @media (max-width: 768px) {
            .category-entry-card {
                flex-direction: column;
                text-align: center;
                padding: 28px 20px;
                gap: 20px;
            }
            .category-entry-visual {
                flex: 0 0 100px;
                width: 100px;
                height: 100px;
                font-size: 2.5rem;
            }
            .category-entry-content h2 {
                font-size: 1.35rem;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

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

        .faq-item summary {
            padding: 18px 22px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-white);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
        }

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

        .faq-item summary .faq-arrow {
            transition: transform var(--transition-fast);
            color: var(--neon-green);
            font-size: 0.85rem;
            flex-shrink: 0;
        }

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

        .faq-item[open] {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        @media (max-width: 520px) {
            .faq-item summary {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
        }

        /* ========== CTA ========== */
        .cta-section {
            background: radial-gradient(ellipse at center, rgba(0, 180, 60, 0.1) 0%, transparent 60%), var(--bg-secondary);
            border-top: 2px solid var(--border-subtle);
            text-align: center;
            padding: 64px 0;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 10px;
        }

        .cta-section p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 24px;
        }

        .cta-section .btn {
            font-size: 1rem;
            padding: 15px 30px;
        }

        @media (max-width: 520px) {
            .cta-section h2 {
                font-size: 1.45rem;
            }
            .cta-section {
                padding: 44px 0;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-nav);
            border-top: 2px solid var(--border-subtle);
            padding: 40px 0 28px;
            color: var(--text-muted);
            font-size: 0.88rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-brand .footer-logo .logo-icon-sm {
            width: 28px;
            height: 28px;
            background: var(--neon-green);
            border-radius: var(--radius-sm);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #0a0e14;
            font-weight: 900;
            font-size: 0.8rem;
        }

        .footer-brand p {
            color: var(--text-muted);
            line-height: 1.6;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-white);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }

        .footer-col a {
            display: block;
            padding: 4px 0;
            color: var(--text-muted);
            transition: color var(--transition-fast);
            font-size: 0.88rem;
        }

        .footer-col a:hover {
            color: var(--neon-green-bright);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        .footer-bottom .domain-info {
            margin-top: 4px;
            font-size: 0.75rem;
            color: var(--text-muted);
            opacity: 0.7;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ========== UTILITY ========== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        .text-neon {
            color: var(--neon-green-bright);
        }

        .text-gold {
            color: var(--gold);
        }

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

/* roulang page: category1 */
:root {
            --bg-primary: #0b0b14;
            --bg-secondary: #12121e;
            --bg-card: #1a1a2e;
            --bg-card-hover: #21213a;
            --text-primary: #e8e8f0;
            --text-secondary: #a8a8c0;
            --text-muted: #6c6c8a;
            --accent-cyan: #00e5ff;
            --accent-blue: #2979ff;
            --accent-pink: #ff4081;
            --accent-green: #00e676;
            --neon-glow-cyan: 0 0 10px rgba(0, 229, 255, 0.5), 0 0 25px rgba(0, 229, 255, 0.25);
            --neon-glow-pink: 0 0 10px rgba(255, 64, 129, 0.5), 0 0 25px rgba(255, 64, 129, 0.25);
            --border-glow: 1px solid rgba(0, 229, 255, 0.35);
            --border-soft: 1px solid rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.45);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        /* ========== Header & Navigation ========== */
        .site-header {
            background: rgba(11, 11, 20, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.18);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
        }
        .site-header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-blue), var(--accent-cyan), transparent);
            opacity: 0.7;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--text-primary);
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
        }
        .nav-logo .logo-icon {
            font-size: 1.8rem;
            color: var(--accent-cyan);
            filter: drop-shadow(0 0 6px var(--accent-cyan));
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-links a {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 4px;
            position: relative;
            transition: color var(--transition), text-shadow var(--transition);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            box-shadow: 0 0 10px var(--accent-cyan);
            transition: width var(--transition);
        }
        .nav-links a:hover {
            color: #fff;
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--accent-cyan);
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.8);
            font-weight: 600;
        }
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.15), rgba(41, 121, 255, 0.15));
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan) !important;
            padding: 10px 20px !important;
            border-radius: 30px;
            font-weight: 600;
            transition: all var(--transition);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.3);
        }
        .nav-cta-btn:hover {
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.35), rgba(41, 121, 255, 0.35));
            box-shadow: 0 0 22px rgba(0, 229, 255, 0.6);
            color: #fff !important;
            border-color: #fff;
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            font-size: 1.8rem;
            color: var(--text-primary);
            background: none;
            border: none;
            transition: color var(--transition);
        }
        .nav-toggle:hover {
            color: var(--accent-cyan);
            text-shadow: 0 0 10px var(--accent-cyan);
        }

        /* ========== Hero ========== */
        .hero {
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 229, 255, 0.08) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 20%, rgba(255, 64, 129, 0.06) 0%, transparent 60%),
                        var(--bg-secondary);
            padding: 100px 0 80px;
            text-align: center;
            border-bottom: 1px solid rgba(0, 229, 255, 0.1);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 140%;
            height: 200%;
            background: repeating-linear-gradient(45deg, transparent, transparent 40px, rgba(0, 229, 255, 0.02) 40px, rgba(0, 229, 255, 0.02) 42px);
            pointer-events: none;
            animation: drift 25s linear infinite;
        }
        @keyframes drift {
            0% { transform: translate(0, 0); }
            100% { transform: translate(60px, 60px); }
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(0, 229, 255, 0.12);
            border: 1px solid rgba(0, 229, 255, 0.4);
            color: var(--accent-cyan);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 24px;
            text-shadow: 0 0 6px rgba(0, 229, 255, 0.5);
        }
        .hero h1 {
            font-size: clamp(2.4rem, 6vw, 3.8rem);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 20px;
            background: linear-gradient(to right, #fff, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            filter: drop-shadow(0 0 18px rgba(0, 229, 255, 0.4));
        }
        .hero p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ========== Buttons ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #0b0b14;
            font-weight: 700;
            padding: 14px 34px;
            border-radius: 40px;
            font-size: 1rem;
            border: none;
            box-shadow: 0 8px 28px rgba(0, 229, 255, 0.45);
            transition: all var(--transition);
            letter-spacing: 0.5px;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(0, 229, 255, 0.7);
            filter: brightness(1.1);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 13px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.25);
            transition: all var(--transition);
        }
        .btn-outline:hover {
            background: rgba(0, 229, 255, 0.08);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.5);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-text {
            color: var(--accent-cyan);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition), color var(--transition);
        }
        .btn-text:hover {
            gap: 10px;
            color: #fff;
            text-shadow: 0 0 10px var(--accent-cyan);
        }

        /* ========== Sections ========== */
        section {
            padding: 90px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }
        .section-label {
            display: inline-block;
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            margin-bottom: 12px;
            text-shadow: 0 0 10px rgba(0, 229, 255, 0.4);
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .section-header p {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.1rem;
        }

        /* Cards */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .card {
            background: var(--bg-card);
            border: var(--border-soft);
            border-radius: var(--radius-md);
            padding: 30px 24px;
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-6px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7), 0 0 20px rgba(0, 229, 255, 0.15);
            border-color: rgba(0, 229, 255, 0.3);
        }
        .card:hover::before {
            opacity: 1;
        }
        .card-icon {
            width: 50px;
            height: 50px;
            background: rgba(0, 229, 255, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .card:hover .card-icon {
            background: rgba(0, 229, 255, 0.2);
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.4);
        }
        .card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            font-weight: 700;
        }
        .card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* Process / Steps */
        .steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 32px;
            counter-reset: step;
        }
        .step {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            position: relative;
            text-align: center;
            border: var(--border-soft);
            transition: all var(--transition);
        }
        .step::after {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -18px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent-cyan);
            color: #0b0b14;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.6);
        }
        .step:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.15);
            transform: translateY(-4px);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: var(--border-soft);
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
            background: var(--bg-card);
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.4);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1.05rem;
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            display: none;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-icon {
            transition: transform 0.3s;
            color: var(--accent-cyan);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        /* CTA Band */
        .cta-band {
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(41, 121, 255, 0.08));
            border-top: 1px solid rgba(0, 229, 255, 0.2);
            border-bottom: 1px solid rgba(0, 229, 255, 0.2);
            text-align: center;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 60px 0 30px;
            color: var(--text-secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo-icon-sm {
            color: var(--accent-cyan);
        }
        .footer-brand p {
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: #fff;
            margin-bottom: 18px;
            font-size: 1rem;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            margin-bottom: 10px;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .domain-info {
            opacity: 0.6;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(11, 11, 20, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: stretch;
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 2px solid var(--accent-cyan);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-cta-btn {
                width: fit-content;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .hero {
                padding: 70px 0 50px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
        }