:root {
            --brand-primary: #0A2540;
            --brand-primary-hover: #143A63;
            --brand-secondary: #C0C0C8;
            --brand-accent: #00F2FF;
            --bg-main: #050D17;
            --bg-surface: #0D1B2B;
            --bg-elevated: #16273D;
            --text-primary: #E6EBF2;
            --text-secondary: #A0AEC0;
            --text-muted: #718096;
            --text-link: #00F2FF;
            --btn-bg: #00F2FF;
            --btn-text: #050D17;
            --btn-hover-bg: #70F9FF;
            --border-default: #1E324B;
            --border-brand: #00F2FF;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
        }
        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 { max-width: 100%; height: auto; display: block; }
        a { color: var(--text-link); text-decoration: none; transition: color 0.2s; }
        a:hover { color: var(--btn-hover-bg); }
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            min-inline-size: 44px;
            padding: 12px 24px;
            background: var(--btn-bg);
            color: var(--btn-text);
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: transform 0.2s, background 0.2s;
            text-align: center;
        }
        .btn-main:hover { background: var(--btn-hover-bg); transform: translateY(-2px); }
        .btn-outline {
            padding: 10px 20px;
            border: 1px solid var(--border-brand);
            color: var(--text-primary);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
        }
        .btn-outline:hover { background: rgba(0, 242, 255, 0.1); }
        h1 { font-size: clamp(1.8rem, 6.5vw, 3rem); line-height: 1.2; margin-bottom: 1rem; color: var(--text-primary); }
        h2 { font-size: clamp(1.4rem, 5.2vw, 2.25rem); line-height: 1.25; margin-top: 3rem; margin-bottom: 1.5rem; color: var(--text-primary); }
        h3 { font-size: clamp(1.1rem, 4.2vw, 1.75rem); line-height: 1.3; margin-bottom: 0.75rem; color: var(--text-primary); }
        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: rgba(5, 13, 23, 0.9);
            backdrop-filter: blur(10px);
        }
        .header-logo-link { display: flex; align-items: center; gap: 8px; }
        .header-logo-link strong { font-size: 16px; font-weight: normal; }
        .header-actions { display: flex; gap: 12px; }
        main { width: 100%; }
        .hero-section {
            padding-block: 3rem 1.5rem;
            text-align: center;
            background: radial-gradient(circle at top right, #16273D 0%, #050D17 100%);
        }
        .hero-intro-text { color: var(--text-secondary); margin-bottom: 2rem; max-width: 800px; margin-inline: auto; }
        .hero-cta-full { width: 100%; display: block; box-sizing: border-box; margin-block: 1.5rem; }
        .hero-tags { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-top: 1.5rem; }
        .hero-tag-pill {
            background: rgba(0, 242, 255, 0.1);
            border: 1px solid var(--border-brand);
            color: var(--brand-accent);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.8rem;
            white-space: nowrap;
        }
        .banner-wrap { width: 100%; margin-block: 1rem; }
        .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: 12px;
            margin-block: 2rem;
        }
        .category-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            text-align: center;
            transition: background 0.3s;
        }
        .category-tile:hover { background: var(--bg-elevated); border-color: var(--brand-accent); }
        .category-tile i { font-size: 2rem; color: var(--brand-accent); margin-bottom: 10px; display: block; }
        .category-tile span { display: block; font-weight: 600; margin-bottom: 8px; }
        .category-tile p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }
        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .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(1.02); border-color: var(--brand-accent); }
        .game-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
        .game-card h3 { font-size: 1rem; padding: 12px; margin: 0; text-align: center; }
        .facts-wrap {
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            padding: 2rem;
            border: 1px solid var(--border-default);
            margin-block: 2rem;
        }
        .facts-notice { font-style: italic; color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1.5rem; }
        .facts-table { width: 100%; border-collapse: collapse; }
        .facts-table tr { border-bottom: 1px solid var(--border-default); }
        .facts-table td { padding: 12px 0; }
        .facts-label { color: var(--text-secondary); font-weight: 500; width: 40%; }
        .facts-value { color: var(--text-primary); text-align: right; }
        .facts-footer-link { display: block; margin-top: 1rem; text-align: center; font-size: 0.85rem; }
        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 10px;
            padding-block: 1rem;
            scrollbar-width: none;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            background: var(--bg-surface);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            border: 1px solid var(--border-default);
            font-size: 0.9rem;
        }
        .promo-container { display: flex; flex-direction: column; gap: 20px; }
        .promo-card {
            background: var(--bg-elevated);
            border: 1px solid var(--border-default);
            padding: 2rem;
            border-radius: var(--radius-lg);
            position: relative;
        }
        .promo-card h3 { color: var(--brand-accent); }
        .usp-grid { display: flex; flex-direction: column; gap: 16px; margin-block: 2rem; }
        .usp-tile {
            display: flex;
            gap: 16px;
            background: var(--bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            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; margin-bottom: 4px; }
        .usp-content p { margin: 0; font-size: 0.9rem; color: var(--text-secondary); }
        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
        }
        .payment-card {
            background: var(--bg-surface);
            padding: 1.2rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
            text-align: center;
        }
        .payment-card i { font-size: 1.8rem; color: var(--brand-accent); margin-bottom: 10px; display: block; }
        .payment-card strong { display: block; margin-bottom: 8px; }
        .payment-card p { font-size: 0.8rem; color: var(--text-muted); margin: 0; }
        .guide-steps { display: flex; flex-direction: column; gap: 24px; }
        .guide-step { display: flex; gap: 20px; align-items: flex-start; }
        .step-num {
            min-width: 40px;
            height: 40px;
            background: var(--brand-accent);
            color: var(--btn-text);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }
        .guide-step-content h3 { margin-top: 0; }
        .guide-step-content h3 a { color: inherit; }
        .download-box {
            background: linear-gradient(135deg, #0A2540 0%, #00F2FF 100%);
            padding: 2.5rem;
            border-radius: var(--radius-lg);
            text-align: center;
            color: var(--btn-text);
        }
        .download-box h2 { color: var(--btn-text); margin-top: 0; }
        .download-box p { color: #050D17; margin-bottom: 2rem; font-weight: 500; }
        .download-box .btn-main { background: var(--btn-text); color: var(--brand-accent); }
        .player-guide-item {
            background: var(--bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            border-left: 4px solid var(--brand-accent);
        }
        .guide-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; display: block; }
        .announcement-grid { display: flex; flex-direction: column; gap: 16px; }
        .announcement-card {
            background: var(--bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
            display: flex;
            gap: 16px;
        }
        .announcement-card i { font-size: 1.2rem; color: var(--brand-accent); margin-top: 4px; }
        .announcement-info h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .announcement-info p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 8px; }
        .announcement-date { font-size: 0.8rem; color: var(--text-muted); }
        .faq-container { display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: var(--bg-surface); border-radius: var(--radius-md); border: 1px solid var(--border-default); }
        .faq-item summary { padding: 16px; cursor: pointer; list-style: none; }
        .faq-item summary h3 { margin: 0; font-size: 1.1rem; display: flex; justify-content: space-between; align-items: center; }
        .faq-item summary h3::after { content: '\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; font-size: 0.9rem; }
        .faq-answer { padding: 0 16px 16px 16px; color: var(--text-secondary); font-size: 0.95rem; }
        .trust-statement { background: var(--bg-surface); padding: 2rem; border-radius: var(--radius-lg); border: 1px solid var(--border-default); }
        .team-card {
            margin-top: 2rem;
            padding: 1.5rem;
            background: var(--bg-elevated);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-brand);
        }
        .security-section { padding: 2rem; background: var(--bg-surface); border-radius: var(--radius-lg); border: 1px solid var(--border-default); }
        .security-list { list-style: none; padding: 0; margin-block: 1.5rem; }
        .security-list li { margin-bottom: 12px; display: flex; gap: 10px; align-items: center; }
        .security-list li i { color: var(--brand-accent); }
        footer {
            margin-top: 4rem;
            padding-block: 3rem 1rem;
            border-top: 1px solid var(--border-default);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            max-width: 600px;
            margin-inline: auto;
            margin-bottom: 2rem;
        }
        .footer-sitemap a { font-size: 0.85rem; color: var(--text-secondary); }
        .footer-contact { margin-bottom: 1.5rem; font-size: 0.9rem; }
        .footer-legal { font-size: 0.8rem; color: var(--text-muted); line-height: 1.4; }
        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            height: 72px;
            background: rgba(13, 27, 43, 0.95);
            backdrop-filter: blur(15px);
            display: flex;
            justify-content: space-around;
            align-items: center;
            border-top: 1px solid var(--border-default);
            padding-bottom: env(safe-area-inset-bottom, 0px);
            z-index: 1000;
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            color: var(--text-secondary);
            font-size: 0.7rem;
            text-decoration: none;
            flex: 1;
        }
        .nav-item i { font-size: 1.2rem; margin-bottom: 4px; }
        .nav-item:hover { color: var(--brand-accent); }
        .util-link { display: inline-block; margin-top: 10px; color: var(--brand-accent); font-weight: 500; }
        .text-center { text-align: center; }

        @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); }
            .guide-steps { flex-direction: row; flex-wrap: wrap; }
            .guide-step { width: calc(50% - 12px); }
            .navigator { display: none; }
        }
        @media (min-width: 1200px) {
            body { padding-inline: 32px; max-width: 1200px; margin-inline: auto; }
            .category-grid { grid-template-columns: repeat(4, 1fr); }
        }
        section { content-visibility: auto; contain-intrinsic-size: 1px 500px; }
        .radius-pill { border-radius: 9999px; }