:root {
            --brand-primary: #0D2147;
            --brand-primary-hover: #16326B;
            --brand-secondary: #C0C0C7;
            --brand-secondary-hover: #E2E2E9;
            --brand-accent: #00F5FF;
            --bg-main: #050B1A;
            --bg-surface: #0D152B;
            --bg-elevated: #16203D;
            --bg-overlay: rgba(5, 11, 26, 0.8);
            --text-primary: #E6EEFF;
            --text-secondary: #AAB8D1;
            --text-muted: #6D7C9B;
            --text-contrast: #050B1A;
            --text-link: #00F5FF;
            --text-link-hover: #70F9FF;
            --btn-bg: #00F5FF;
            --btn-text: #050B1A;
            --btn-hover-bg: #70F9FF;
            --semantic-success: #00FFB2;
            --semantic-error: #FF4D6D;
            --semantic-warning: #FFC107;
            --semantic-info: #00A3FF;
            --border-default: #1E2B4D;
            --border-strong: #2C3D6B;
            --border-brand: #00F5FF;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --radius-pill: 9999px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.5);
            --shadow-elevated: 0 12px 32px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 15px rgba(0, 245, 255, 0.6);
            --grad-brand: linear-gradient(135deg, #0D2147 0%, #00F5FF 100%);
            --grad-hero: radial-gradient(circle at center, #16203D 0%, #050B1A 100%);
            --grad-btn: linear-gradient(180deg, #00F5FF 0%, #00C8D4 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);
        }

        h1, h2, h3 { font-family: 'Exo 2', sans-serif; font-weight: 700; letter-spacing: -0.02em; line-height: 1.2; color: var(--text-primary); }
        h1 { font-size: clamp(1.6rem, 6.5vw, 2.4rem); margin-bottom: 1rem; }
        h2 { font-size: clamp(1.3rem, 5.2vw, 1.8rem); margin-top: 2.5rem; margin-bottom: 1.5rem; }
        h3 { font-size: clamp(1.05rem, 4.2vw, 1.25rem); margin-bottom: 0.75rem; }

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

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

        .btn-base {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            min-inline-size: 44px;
            padding: 12px 24px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            text-align: center;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            border: none;
        }
        .btn-primary {
            background: var(--grad-btn);
            color: var(--text-contrast);
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 20px rgba(0, 245, 255, 0.8); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-block: 1rem;
            border-bottom: 1px solid var(--border-default);
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--bg-main);
        }
        .header-brand { display: flex; align-items: center; gap: 10px; }
        .header-brand strong { font-size: 16px; font-weight: 400; }
        .header-actions { display: flex; gap: 12px; }

        .hero-container {
            text-align: center;
            padding-block: 3rem 1.5rem;
            background: var(--grad-hero);
        }
        .hero-intro-text {
            max-width: 800px;
            margin: 0 auto 2rem;
            color: var(--text-secondary);
        }
        .hero-pill-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-top: 2rem;
        }
        .hero-pill {
            background: var(--bg-elevated);
            border: 1px solid var(--border-brand);
            color: var(--brand-accent);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.8rem;
        }

        .banner-wrap { width: 100%; margin: 1.5rem 0; }
        .banner-wrap img { width: 100%; aspect-ratio: 2 / 1; object-fit: cover; border-radius: var(--radius-md); }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-block: 2rem 0;
        }
        .category-tile {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-default);
            text-align: center;
            transition: border-color 0.3s;
        }
        .category-tile:hover { border-color: var(--brand-accent); }
        .category-tile i { font-size: 2rem; color: var(--brand-accent); margin-bottom: 10px; }
        .category-tile h3 { font-size: 1.1rem; margin-bottom: 5px; }
        .category-tile p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }

        .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(--border-strong); }
        .game-card img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
        .game-card h3 { font-size: 0.95rem; padding: 10px; margin: 0; text-align: center; color: var(--text-primary); }

        .fact-table-wrap { margin-block: 2rem 0; }
        .fact-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .fact-table tr { border-bottom: 1px solid var(--border-default); }
        .fact-table td { padding: 12px 15px; font-size: 0.95rem; }
        .fact-table td:first-child { font-weight: 600; color: var(--text-secondary); width: 40%; }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 10px;
            padding-block: 1rem 0;
            scrollbar-width: none;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            background: var(--bg-elevated);
            white-space: nowrap;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            border: 1px solid var(--border-default);
        }

        .promo-card {
            background: var(--bg-surface);
            padding: 25px;
            border-radius: var(--radius-lg);
            margin-bottom: 15px;
            border-left: 4px solid var(--brand-accent);
        }

        .usp-grid {
            display: grid;
            gap: 15px;
            margin-block: 2rem 0;
        }
        .usp-tile {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            display: flex;
            gap: 15px;
            align-items: flex-start;
        }
        .usp-tile i { font-size: 1.5rem; color: var(--brand-accent); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
        }
        .pay-card {
            background: var(--bg-surface);
            padding: 15px;
            border-radius: var(--radius-md);
            text-align: center;
            border: 1px solid var(--border-default);
        }
        .pay-card i { font-size: 1.8rem; color: var(--text-secondary); margin-bottom: 10px; }
        .pay-card p { font-size: 0.8rem; color: var(--text-muted); margin: 5px 0 0; }

        .guide-step {
            display: flex;
            gap: 20px;
            margin-bottom: 20px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
        }
        .step-num {
            background: var(--brand-accent);
            color: var(--text-contrast);
            min-width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .announcement-item {
            display: flex;
            gap: 15px;
            padding-block: 15px;
            border-bottom: 1px solid var(--border-default);
        }
        .announcement-date { font-size: 0.75rem; color: var(--text-muted); display: block; }

        .faq-item { margin-bottom: 1rem; background: var(--bg-surface); border-radius: var(--radius-md); }
        .faq-item summary { padding: 15px; cursor: pointer; font-weight: 600; }
        .faq-item p { padding: 0 15px 15px; color: var(--text-secondary); font-size: 0.95rem; }

        .trust-card {
            background: var(--bg-elevated);
            padding: 20px;
            border-radius: var(--radius-md);
            margin-top: 2rem;
            border: 1px dashed var(--border-strong);
        }

        footer {
            background: var(--bg-surface);
            padding: 3rem 0 2rem;
            margin-top: 4rem;
            border-top: 2px solid var(--border-brand);
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 2rem;
        }
        .footer-sitemap a { font-size: 0.85rem; color: var(--text-secondary); }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            height: 72px;
            background: var(--bg-surface);
            border-top: 1px solid var(--border-default);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding-bottom: env(safe-area-inset-bottom);
            z-index: 1000;
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            font-size: 0.7rem;
            color: var(--text-secondary);
            gap: 4px;
        }
        .nav-item i { font-size: 1.2rem; }

        section {
            content-visibility: auto;
            contain-intrinsic-size: 1px 500px;
            margin-bottom: 3rem;
        }

        @media (min-width: 768px) {
            body { padding-inline: 24px; padding-bottom: 24px; }
            .category-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 { padding-bottom: 24px; }
        }

        @media (min-width: 1200px) {
            body { padding-inline: 32px; max-width: 1200px; margin-inline: auto; }
            .category-grid { grid-template-columns: repeat(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(7, 1fr); }
        }