:root {
            --brand-primary: #1A3C6D;
            --brand-primary-hover: #255296;
            --brand-secondary: #C0C0C8;
            --brand-accent: #00F5FF;
            --bg-main: #050B1A;
            --bg-surface: #0D172D;
            --bg-elevated: #162342;
            --text-primary: #E6F0FF;
            --text-secondary: #A0B1C5;
            --text-muted: #6B7C94;
            --text-link: #00F5FF;
            --btn-bg: #00F5FF;
            --btn-text: #050B1A;
            --btn-hover-bg: #70F9FF;
            --border-default: #1C2B4D;
            --border-brand: rgba(0, 245, 255, 0.4);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-pill: 9999px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --glow-cyan: 0 0 15px rgba(0, 245, 255, 0.5);
        }

        html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: 'Be Vietnam Pro', sans-serif;
            background-color: var(--bg-main);
            color: var(--text-primary);
            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;
        }

        h1, h2, h3 { font-family: 'Outfit', sans-serif; color: var(--text-primary); margin-top: 0; }
        h1 { font-size: clamp(1.6rem, 6.5vw, 2.4rem); line-height: 1.2; margin-bottom: 1.5rem; }
        h2 { font-size: clamp(1.3rem, 5.2vw, 1.8rem); line-height: 1.25; margin-top: 2.5rem; margin-bottom: 1.2rem; }
        h3 { font-size: clamp(1.05rem, 4.2vw, 1.25rem); line-height: 1.3; margin-bottom: 0.75rem; }

        a { color: var(--text-link); text-decoration: none; transition: color 0.2s; }
        a:hover { color: var(--btn-hover-bg); }

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

        .btn {
            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: all 0.3s;
            border: none;
            text-align: center;
        }
        .btn-primary { background: var(--btn-bg); color: var(--btn-text); }
        .btn-primary:hover { background: var(--btn-hover-bg); transform: translateY(-2px); box-shadow: var(--glow-cyan); }
        .btn-full { width: 100%; box-sizing: border-box; }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(5, 11, 26, 0.9);
            backdrop-filter: blur(10px);
        }
        .header-logo { display: flex; align-items: center; gap: 10px; }
        .header-logo strong { font-size: 16px; font-weight: normal; }
        .header-auth { display: flex; gap: 10px; }

        main { width: 100%; }

        .hero-section {
            padding: 40px 0;
            text-align: center;
            background: radial-gradient(circle at center, #162342 0%, #050B1A 100%);
            border-radius: var(--radius-lg);
            margin-bottom: 2rem;
        }
        .hero-intro-text { color: var(--text-secondary); margin-bottom: 2rem; max-width: 700px; margin-inline: auto; }
        .hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 2rem; }
        .hero-tag {
            background: rgba(0, 245, 255, 0.1);
            border: 1px solid var(--border-brand);
            color: var(--brand-accent);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
        }

        .banner-link { display: block; width: 100%; margin: 2rem 0; }
        .banner-img { width: 100%; aspect-ratio: 2 / 1; object-fit: cover; border-radius: var(--radius-md); }

        .cat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-bottom: 3rem;
        }
        .cat-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            transition: border 0.3s;
        }
        .cat-tile:hover { border-color: var(--brand-accent); }
        .cat-tile i { font-size: 2rem; color: var(--brand-accent); margin-bottom: 10px; }
        .cat-tile strong { display: block; margin-bottom: 8px; color: var(--text-primary); }
        .cat-tile span { font-size: 0.85rem; color: var(--text-secondary); }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }
        .game-card {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-default);
            transition: transform 0.2s;
        }
        .game-card:hover { transform: scale(1.03); border-color: var(--brand-accent); }
        .game-card img { aspect-ratio: 1 / 1; object-fit: cover; width: 100%; }
        .game-card h3 { padding: 12px; margin: 0; font-size: 1rem; text-align: center; color: var(--text-primary); }

        .fact-container { margin-bottom: 3rem; }
        .freshness-notice { font-style: italic; color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1rem; }
        .fact-table { width: 100%; border-collapse: collapse; background: var(--bg-surface); border-radius: var(--radius-md); overflow: hidden; }
        .fact-table td { padding: 12px 15px; border-bottom: 1px solid var(--border-default); }
        .fact-table td:first-child { font-weight: 600; color: var(--text-secondary); width: 40%; }
        .fact-table td:last-child { color: var(--text-primary); }
        .fact-footer { margin-top: 10px; font-size: 0.85rem; text-align: center; }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 15px;
            padding: 15px 0;
            margin-bottom: 2rem;
            scrollbar-width: none;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            white-space: nowrap;
            background: var(--bg-elevated);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 0.9rem;
            border: 1px solid var(--border-default);
        }

        .promo-container { display: flex; flex-direction: column; gap: 20px; }
        .promo-card {
            background: linear-gradient(135deg, var(--bg-elevated) 0%, var(--bg-surface) 100%);
            padding: 25px;
            border-radius: var(--radius-lg);
            border-left: 4px solid var(--brand-accent);
        }
        .promo-card h3 { color: var(--brand-accent); }

        .usp-grid { display: flex; flex-direction: column; gap: 15px; margin-bottom: 3rem; }
        .usp-tile {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
        }
        .usp-tile i { font-size: 1.5rem; color: var(--brand-accent); width: 30px; }

        .payment-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }
        .payment-card {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            border: 1px solid var(--border-default);
        }
        .payment-card i { font-size: 2rem; color: var(--brand-accent); margin-bottom: 10px; }
        .payment-card strong { display: block; margin-bottom: 8px; }
        .payment-card p { font-size: 0.8rem; color: var(--text-secondary); margin: 0; }

        .guide-steps { display: flex; flex-direction: column; gap: 20px; }
        .step-item {
            display: flex;
            gap: 20px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
        }
        .step-num {
            background: var(--brand-accent);
            color: var(--bg-main);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            flex-shrink: 0;
        }
        .step-content h3 { margin-bottom: 5px; }
        .step-content a { color: inherit; }

        .download-box {
            background: var(--bg-elevated);
            padding: 30px;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border-brand);
        }

        .player-guide-item {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            margin-bottom: 15px;
            border: 1px solid var(--border-default);
        }
        .guide-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; display: block; }

        .announcement-item {
            display: flex;
            gap: 15px;
            background: var(--bg-surface);
            padding: 15px;
            border-radius: var(--radius-md);
            margin-bottom: 15px;
        }
        .announcement-item i { color: var(--brand-accent); margin-top: 5px; }
        .announcement-date { font-size: 0.8rem; color: var(--text-muted); display: block; margin-top: 5px; }

        .faq-item { background: var(--bg-surface); margin-bottom: 10px; border-radius: var(--radius-md); border: 1px solid var(--border-default); }
        .faq-item summary { padding: 15px; cursor: pointer; list-style: none; }
        .faq-item summary h3 { margin: 0; font-size: 1rem; display: flex; justify-content: space-between; align-items: center; }
        .faq-item p { padding: 0 15px 15px; color: var(--text-secondary); margin: 0; }

        .trust-card {
            background: var(--bg-elevated);
            padding: 25px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-brand);
            margin-top: 20px;
        }

        footer {
            margin-top: 4rem;
            padding: 40px 0;
            border-top: 1px solid var(--border-default);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 30px;
        }
        .footer-sitemap a { font-size: 0.85rem; color: var(--text-secondary); }
        .footer-contact { margin-bottom: 20px; color: var(--text-secondary); }
        .footer-legal { font-size: 0.8rem; color: var(--text-muted); }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            height: 64px;
            background: rgba(13, 23, 45, 0.95);
            backdrop-filter: blur(10px);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding-bottom: env(safe-area-inset-bottom);
            border-top: 1px solid var(--border-default);
            z-index: 2000;
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            color: var(--text-secondary);
            font-size: 0.7rem;
            text-decoration: none;
        }
        .nav-item i { font-size: 1.2rem; margin-bottom: 4px; }

        .utility-link { display: block; text-align: center; margin-top: 15px; font-weight: 500; }

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

        @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; }
            header { padding: 15px 0; }
        }

        @media (min-width: 1200px) {
            body { padding-inline: 32px; max-width: 1200px; margin-inline: auto; }
            .cat-grid { grid-template-columns: repeat(4, 1fr); }
        }