:root {
            --primary: #0A2540;
            --primary-hover: #143A63;
            --secondary: #C0C0C0;
            --secondary-hover: #E0E0E0;
            --accent: #00F5FF;
            --bg-main: #050C16;
            --bg-surface: #0D1826;
            --bg-elevated: #162436;
            --text-primary: #E6F1FF;
            --text-secondary: #B0C4DE;
            --text-muted: #78909C;
            --btn-bg: #00F5FF;
            --btn-text: #050C16;
            --btn-hover: #70F7FF;
            --border-default: #1C2F45;
            --border-brand: #00F5FF;
            --shadow-card: 4px 4px 0px #00F5FF;
            --radius-md: 4px;
            --radius-lg: 8px;
            --radius-pill: 9999px;
        }
        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: 'Archivo Black', sans-serif; letter-spacing: -0.02em; line-height: 1.1; margin: 0; }
        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: 1.2rem; }
        h3 { font-size: clamp(1.05rem, 4.2vw, 1.25rem); margin-bottom: 0.75rem; }
        a { color: var(--accent); text-decoration: none; transition: color 0.2s ease; }
        a:hover { color: var(--btn-hover); }
        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: transform 0.1s ease, background-color 0.2s ease;
            text-align: center;
            border: none;
        }
        .btn-primary { background: var(--btn-bg); color: var(--btn-text); }
        .btn-primary:hover { background: var(--btn-hover); transform: translateY(-2px); }
        .btn-full { width: 100%; box-sizing: border-box; }
        .card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            padding: 20px;
            box-shadow: var(--shadow-card);
        }
        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
            border-bottom: 1px solid var(--border-default);
        }
        .header-logo { display: flex; align-items: center; gap: 8px; }
        .header-logo strong { font-size: 16px; font-weight: normal; color: var(--text-primary); }
        .header-auth { display: flex; gap: 10px; }
        .hero-section { padding: 40px 0; text-align: center; }
        .hero-intro { max-width: 800px; margin: 0 auto 24px; color: var(--text-secondary); }
        .hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 20px; }
        .tag-pill {
            background: var(--bg-elevated);
            border: 1px solid var(--border-brand);
            color: var(--accent);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.8rem;
        }
        .banner-link { display: block; width: 100%; aspect-ratio: 2 / 1; overflow: hidden; border-radius: var(--radius-lg); }
        .banner-link img { width: 100%; height: 100%; object-fit: cover; }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin: 30px 0;
        }
        .cat-tile {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border-default);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }
        .cat-tile i { font-size: 2rem; color: var(--accent); }
        .cat-tile span { font-weight: 600; display: block; }
        .cat-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-lg);
            overflow: hidden;
            border: 1px solid var(--border-default);
            text-decoration: none;
            color: inherit;
            transition: transform 0.2s ease;
        }
        .game-card:hover { transform: scale(1.03); }
        .game-card img { aspect-ratio: 1 / 1; object-fit: cover; width: 100%; }
        .game-card h3 { padding: 12px; font-size: 1rem; text-align: center; margin: 0; }
        .facts-table { width: 100%; border-collapse: collapse; margin: 15px 0; }
        .facts-table td { padding: 12px; border-bottom: 1px solid var(--border-default); }
        .facts-label { color: var(--text-muted); width: 40%; }
        .facts-value { color: var(--text-primary); font-weight: 500; }
        .freshness-notice { font-style: italic; color: var(--text-muted); font-size: 0.85rem; margin-bottom: 10px; display: block; }
        .terms-link { font-size: 0.85rem; color: var(--text-muted); display: block; margin-top: 10px; }
        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 15px;
            padding: 15px 0;
            scrollbar-width: none;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            background: var(--bg-elevated);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            font-size: 0.9rem;
            border: 1px solid var(--border-default);
        }
        .promo-list { display: flex; flex-direction: column; gap: 20px; }
        .promo-card { display: flex; flex-direction: column; gap: 15px; }
        .usp-grid { display: flex; flex-direction: column; gap: 20px; }
        .usp-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            padding: 15px;
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
        }
        .usp-item i { font-size: 1.5rem; color: var(--accent); margin-top: 3px; }
        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }
        .pay-card {
            text-align: center;
            padding: 15px;
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-default);
        }
        .pay-card i { font-size: 1.5rem; color: var(--accent); margin-bottom: 10px; display: block; }
        .guide-steps { display: flex; flex-direction: column; gap: 20px; }
        .step-item { display: flex; gap: 15px; align-items: flex-start; }
        .step-num {
            background: var(--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-item a { color: inherit; }
        .app-content { padding: 20px; background: var(--bg-surface); border-radius: var(--radius-lg); text-align: center; }
        .player-guides { display: flex; flex-direction: column; gap: 20px; }
        .guide-card { background: var(--bg-surface); padding: 20px; border-radius: var(--radius-lg); border-left: 4px solid var(--accent); }
        .guide-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; display: block; }
        .announcement-list { display: flex; flex-direction: column; gap: 15px; }
        .announcement-item {
            display: flex;
            gap: 15px;
            padding: 15px;
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-default);
        }
        .announcement-date { font-size: 0.8rem; color: var(--text-muted); display: block; margin-top: 5px; }
        .faq-item { margin-bottom: 15px; border: 1px solid var(--border-default); border-radius: var(--radius-lg); }
        .faq-item summary { padding: 15px; cursor: pointer; list-style: none; display: flex; align-items: center; }
        .faq-item summary h3 { margin: 0; font-size: 1.1rem; }
        .faq-answer { padding: 15px; background: var(--bg-elevated); color: var(--text-secondary); border-top: 1px solid var(--border-default); }
        .about-section { padding: 20px; background: var(--bg-surface); border-radius: var(--radius-lg); }
        .team-card {
            margin-top: 20px;
            padding: 20px;
            background: var(--bg-main);
            border: 1px solid var(--border-brand);
            border-radius: var(--radius-lg);
        }
        .security-block {
            display: flex;
            flex-direction: column;
            gap: 20px;
            padding: 20px;
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 30px;
        }
        .footer-link { font-size: 0.9rem; color: var(--text-secondary); }
        .footer-bottom { text-align: center; padding: 20px 0; border-top: 1px solid var(--border-default); font-size: 0.85rem; color: var(--text-muted); }
        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            background: var(--bg-surface);
            border-top: 1px solid var(--border-default);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding: 10px 0 calc(10px + env(safe-area-inset-bottom));
            z-index: 1000;
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            color: var(--text-secondary);
            font-size: 0.75rem;
            text-decoration: none;
        }
        .nav-item i { font-size: 1.2rem; }
        .util-link { display: inline-block; margin-top: 15px; font-weight: 600; }
        section { content-visibility: auto; contain-intrinsic-size: 1px 500px; }

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