:root {
            --brand-primary: #0F172A;
            --brand-primary-hover: #1E293B;
            --brand-secondary: #94A3B8;
            --brand-secondary-hover: #CBD5E1;
            --brand-accent: #00F5FF;
            --bg-main: #020617;
            --bg-surface: #0F172A;
            --bg-elevated: #1E293B;
            --bg-overlay: rgba(2, 6, 23, 0.8);
            --text-primary: #F1F5F9;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --text-brand-contrast: #020617;
            --text-link: #00F5FF;
            --text-link-hover: #7DD3C7;
            --btn-bg: #00F5FF;
            --btn-text: #020617;
            --btn-bg-hover: #7DD3C7;
            --border-default: #1E293B;
            --border-strong: #334155;
            --border-brand: #00F5FF;
            --radius-sm: 2px;
            --radius-md: 4px;
            --radius-lg: 8px;
            --radius-pill: 9999px;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 15px rgba(0, 245, 255, 0.4);
            --grad-brand: linear-gradient(135deg, #00F5FF 0%, #00B4D8 100%);
            --grad-button: linear-gradient(to bottom, #00F5FF 0%, #00D1DB 100%);
        }

        html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: 'Be Vietnam Pro', sans-serif;
            font-size: clamp(15px, 3.9vw, 16px);
            line-height: 1.65;
            padding-inline: 14px;
            padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
            overflow-x: hidden;
            background-color: var(--bg-main);
            color: var(--text-primary);
        }
        img, video, iframe { max-width: 100%; height: auto; display: block; }
        a { color: var(--text-link); text-decoration: none; transition: color 0.2s ease; }
        a:hover { color: var(--text-link-hover); }
        .btn, .cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            min-inline-size: 44px;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.1s ease, background 0.2s ease;
            border: none;
            text-align: center;
        }
        .btn-primary {
            background: var(--grad-button);
            color: var(--text-brand-contrast);
            font-family: 'Barlow Condensed', sans-serif;
            text-transform: uppercase;
        }
        .btn-primary:hover { background: var(--btn-bg-hover); transform: translateY(-1px); }
        .btn-secondary {
            background: var(--bg-elevated);
            color: var(--text-primary);
            border: 1px solid var(--border-strong);
        }
        .btn-secondary:hover { background: var(--brand-primary-hover); }

        h1, h2, h3 {
            font-family: 'Barlow Condensed', sans-serif;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-top: 0;
        }
        h1 { font-size: clamp(1.6rem, 6.5vw, 2.4rem); font-style: italic; color: var(--text-primary); text-shadow: var(--shadow-glow); }
        h2 { font-size: clamp(1.3rem, 5.2vw, 1.8rem); margin-top: 2.5rem; margin-bottom: 1.25rem; font-style: italic; position: relative; display: inline-block; }
        h2::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 100%; height: 3px; background: var(--brand-accent); box-shadow: var(--shadow-glow); }
        h3 { font-size: clamp(1.05rem, 4.2vw, 1.25rem); margin-bottom: 0.75rem; color: var(--text-primary); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-block: 1rem;
            background: var(--bg-surface);
            border-bottom: 1px solid var(--border-default);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-brand { display: flex; align-items: center; gap: 8px; }
        .header-brand strong { font-size: 16px; font-weight: 400; }
        .header-actions { display: flex; gap: 10px; }

        main { width: 100%; }
        .hero-section { padding-block: 2rem 0; text-align: center; }
        .hero-intro-text { max-width: 800px; margin: 1.5rem auto; color: var(--text-secondary); }
        .hero-cta-wrapper { margin-block: 2rem; }
        .hero-cta-wrapper .btn { width: 100%; font-size: 1.25rem; }
        .hero-tags { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; }
        .hero-tag {
            background: var(--bg-elevated);
            color: var(--brand-accent);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.8rem;
            border: 1px solid var(--border-brand);
        }

        .banner-link { display: block; width: 100%; margin-block: 1rem; }
        .banner-img { width: 100%; aspect-ratio: 2 / 1; object-fit: cover; border-radius: var(--radius-lg); }

        .cat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-block: 2rem;
        }
        .cat-tile {
            background: var(--bg-surface);
            padding: 1.5rem 1rem;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border-default);
            transition: border-color 0.3s ease;
        }
        .cat-tile:hover { border-color: var(--brand-accent); }
        .cat-tile i { font-size: 2rem; color: var(--brand-accent); margin-bottom: 10px; display: block; }
        .cat-tile strong { display: block; font-size: 1.1rem; margin-bottom: 5px; }
        .cat-tile span { font-size: 0.85rem; color: var(--text-secondary); }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-block: 1.5rem;
        }
        .game-card {
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-default);
            transition: transform 0.2s ease;
        }
        .game-card:hover { transform: scale(1.02); border-color: var(--brand-accent); }
        .game-card img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
        .game-card h3 { padding: 12px; margin: 0; font-size: 1rem; text-align: center; }

        .fact-table-wrapper { margin-block: 2rem; }
        .fact-notice { font-style: italic; color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 1rem; }
        .fact-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
        }
        .fact-table tr { border-bottom: 1px solid var(--border-default); }
        .fact-table tr:last-child { border-bottom: none; }
        .fact-table td { padding: 12px 15px; font-size: 0.95rem; }
        .fact-label { font-weight: 600; color: var(--text-secondary); width: 40%; }
        .fact-value { color: var(--text-primary); }
        .fact-footer-link { display: block; margin-top: 10px; font-size: 0.85rem; color: var(--text-muted); }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 10px;
            padding-block: 1rem;
            scrollbar-width: none;
            border-top: 1px solid var(--border-default);
            border-bottom: 1px solid var(--border-default);
            margin-block: 2rem;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            white-space: nowrap;
            background: var(--bg-elevated);
            padding: 6px 15px;
            border-radius: var(--radius-pill);
            font-size: 0.9rem;
            border: 1px solid var(--border-strong);
        }

        .promo-list { display: flex; flex-direction: column; gap: 20px; margin-block: 2rem; }
        .promo-card {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-lg);
            border-left: 4px solid var(--brand-accent);
            box-shadow: var(--shadow-card);
        }
        .promo-card h3 { margin-top: 0; }
        .promo-card p { color: var(--text-secondary); margin-bottom: 20px; }

        .usp-grid { display: flex; flex-direction: column; gap: 15px; margin-block: 2rem; }
        .usp-tile {
            display: flex;
            gap: 15px;
            padding: 15px;
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            align-items: center;
            border: 1px solid var(--border-default);
        }
        .usp-tile i { font-size: 1.5rem; color: var(--brand-accent); width: 30px; text-align: center; }
        .usp-content strong { display: block; font-size: 1rem; }
        .usp-content span { font-size: 0.9rem; color: var(--text-secondary); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-block: 2rem;
        }
        .pay-card {
            background: var(--bg-surface);
            padding: 15px;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border-default);
        }
        .pay-card i { font-size: 1.8rem; color: var(--brand-accent); margin-bottom: 10px; display: block; }
        .pay-card strong { display: block; margin-bottom: 8px; font-size: 0.95rem; }
        .pay-card p { font-size: 0.8rem; color: var(--text-secondary); margin: 0; }

        .guide-steps { display: flex; flex-direction: column; gap: 20px; margin-block: 2rem; }
        .step-item {
            display: flex;
            gap: 15px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-lg);
            position: relative;
        }
        .step-num {
            min-width: 35px;
            height: 35px;
            background: var(--grad-brand);
            color: var(--text-brand-contrast);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }
        .step-item h3 a { color: inherit; text-decoration: none; }

        .mobile-box {
            background: var(--bg-surface);
            padding: 25px;
            border-radius: var(--radius-lg);
            text-align: center;
            margin-block: 2rem;
            border: 1px solid var(--border-brand);
        }

        .player-guide-list { display: flex; flex-direction: column; gap: 20px; margin-block: 2rem; }
        .guide-card {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-default);
        }
        .guide-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; display: block; }

        .announcement-list { display: flex; flex-direction: column; gap: 15px; margin-block: 2rem; }
        .ann-item {
            display: flex;
            gap: 15px;
            padding: 15px;
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            border-bottom: 2px solid var(--border-strong);
        }
        .ann-item i { color: var(--brand-accent); margin-top: 4px; }
        .ann-content h3 { font-size: 1.1rem; margin-bottom: 5px; }
        .ann-date { font-size: 0.8rem; color: var(--text-muted); display: block; margin-top: 8px; }

        .faq-section { margin-block: 2rem; }
        .faq-item {
            background: var(--bg-surface);
            margin-bottom: 10px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-default);
        }
        .faq-item summary { padding: 15px; cursor: pointer; list-style: none; }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item p { padding: 0 15px 15px 15px; color: var(--text-secondary); margin: 0; }

        .about-box {
            background: var(--bg-surface);
            padding: 25px;
            border-radius: var(--radius-lg);
            margin-block: 2rem;
        }
        .team-card {
            margin-top: 20px;
            padding: 20px;
            background: var(--bg-elevated);
            border-radius: var(--radius-md);
            border-left: 3px solid var(--brand-accent);
        }

        .security-section {
            background: var(--bg-surface);
            padding: 25px;
            border-radius: var(--radius-lg);
            margin-block: 2rem;
            border: 1px solid var(--border-default);
        }
        .security-list { display: flex; flex-direction: column; gap: 12px; margin-block: 1rem; }
        .security-item { display: flex; gap: 10px; align-items: flex-start; }
        .security-item i { color: var(--brand-accent); margin-top: 4px; }

        footer {
            background: var(--bg-surface);
            padding: 3rem 0 2rem 0;
            border-top: 1px solid var(--border-default);
            margin-top: 3rem;
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            max-width: 800px;
            margin: 0 auto 2rem auto;
            text-align: center;
        }
        .footer-sitemap a { font-size: 0.9rem; color: var(--text-secondary); }
        .footer-contact { margin-bottom: 1.5rem; font-size: 0.95rem; }
        .footer-legal { font-size: 0.85rem; color: var(--text-muted); padding-inline: 20px; }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            background: var(--bg-surface);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding-block: 10px;
            padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
            border-top: 1px solid var(--border-strong);
            z-index: 1000;
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            color: var(--text-secondary);
            font-size: 0.75rem;
            text-decoration: none;
        }
        .nav-item i { font-size: 1.2rem; margin-bottom: 4px; }
        .nav-item:hover { color: var(--brand-accent); }

        .utility-link {
            display: inline-block;
            margin-top: 15px;
            font-weight: 600;
            color: var(--brand-accent);
        }

        @media (min-width: 768px) {
            body { padding-inline: 24px; padding-bottom: 24px; }
            .cat-grid { grid-template-columns: repeat(3, 1fr); }
            .game-grid { grid-template-columns: repeat(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .navigator { display: none; }
            .footer-sitemap { grid-template-columns: repeat(5, 1fr); }
        }
        @media (min-width: 1200px) {
            body { padding-inline: 32px; max-width: 1200px; margin-inline: auto; }
            .cat-grid { grid-template-columns: repeat(4, 1fr); }
        }

        section { content-visibility: auto; contain-intrinsic-size: 1px 500px; }