:root {
            --primary: #0B2447;
            --primary-hover: #153A7A;
            --secondary: #C0C0C8;
            --secondary-hover: #E0E0E8;
            --accent: #00F5FF;
            --bg-main: #050B18;
            --bg-surface: #0C162D;
            --bg-elevated: #152242;
            --text-primary: #E6EEFF;
            --text-secondary: #B0C4DE;
            --text-muted: #7D8FB3;
            --btn-bg: #00F5FF;
            --btn-text: #050B18;
            --btn-hover-bg: #80FFFF;
            --border-def: #1C2D54;
            --border-brand: rgba(0, 245, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --glass-bg: rgba(12, 22, 45, 0.7);
        }

        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;
            color: var(--text-primary);
            background-color: var(--bg-main);
            padding-inline: 14px;
            padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
            overflow-x: hidden;
        }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            max-width: 1200px;
            margin: 0 auto;
        }

        .header-logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: inherit;
        }

        .header-logo-link strong {
            font-size: 16px;
            font-weight: normal;
        }

        .header-actions {
            display: flex;
            gap: 12px;
        }

        .btn-nav {
            text-decoration: none;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: all 0.3s ease;
            font-size: 0.9rem;
        }

        .btn-login {
            color: var(--text-primary);
            border: 1px solid var(--border-brand);
        }

        .btn-register {
            background-color: var(--btn-bg);
            color: var(--btn-text);
        }

        .btn-nav:hover { opacity: 0.9; transform: translateY(-2px); }

        main { width: 100%; max-width: 1200px; margin: 0 auto; }

        .hero-section {
            text-align: center;
            padding: 40px 0;
            background: radial-gradient(circle at top right, #152242 0%, #050B18 70%);
        }

        h1 {
            font-size: clamp(1.8rem, 6.5vw, 3rem);
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .hero-text {
            max-width: 800px;
            margin: 0 auto 30px;
            color: var(--text-secondary);
        }

        .cta-main {
            display: block;
            width: 100%;
            background: linear-gradient(180deg, #00F5FF 0%, #00D1DB 100%);
            color: var(--btn-text);
            text-decoration: none;
            padding: 18px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.2rem;
            text-align: center;
            box-shadow: 0 0 20px rgba(0, 245, 255, 0.3);
            transition: transform 0.2s ease;
        }

        .cta-main:hover { transform: scale(1.02); }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-top: 25px;
        }

        .tag-pill {
            background: var(--bg-elevated);
            border: 1px solid var(--border-brand);
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            color: var(--accent);
        }

        .banner-wrap {
            display: block;
            width: 100%;
            margin: 20px 0;
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .banner-wrap img {
            width: 100%;
            aspect-ratio: 2 / 1;
            object-fit: cover;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin: 40px 0;
        }

        .category-tile {
            background: var(--glass-bg);
            border: 1px solid var(--border-brand);
            padding: 20px;
            border-radius: var(--radius-md);
            text-decoration: none;
            color: inherit;
            text-align: center;
            backdrop-filter: blur(10px);
            transition: background 0.3s ease;
        }

        .category-tile:hover { background: var(--bg-elevated); }

        .category-tile i {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 10px;
        }

        .category-tile strong {
            display: block;
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        .category-tile span {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-bottom: 40px;
        }

        .game-card {
            text-decoration: none;
            color: inherit;
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-def);
            overflow: hidden;
            transition: transform 0.3s ease;
        }

        .game-card:hover { transform: translateY(-5px); border-color: var(--accent); }

        .game-card img {
            width: 100%;
            aspect-ratio: 1 / 1;
            object-fit: cover;
        }

        .game-card h3 {
            margin: 0;
            padding: 12px;
            font-size: 1rem;
            text-align: center;
            background: var(--bg-elevated);
        }

        .facts-container {
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            padding: 30px;
            margin: 40px 0;
            border: 1px solid var(--border-brand);
        }

        .facts-notice {
            font-style: italic;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }

        .facts-table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 20px;
        }

        .facts-table td {
            padding: 12px;
            border-bottom: 1px solid var(--border-def);
        }

        .facts-label { color: var(--text-secondary); font-weight: 500; width: 40%; }

        .terms-link {
            display: block;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
            text-decoration: none;
        }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 15px;
            padding: 20px 0;
            border-top: 1px solid var(--border-def);
            border-bottom: 1px solid var(--border-def);
            margin-bottom: 40px;
            scrollbar-width: none;
        }

        .toc-nav::-webkit-scrollbar { display: none; }

        .toc-link {
            white-space: nowrap;
            color: var(--accent);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.9rem;
        }

        .promo-list { display: flex; flex-direction: column; gap: 20px; margin: 40px 0; }

        .promo-card {
            background: var(--bg-elevated);
            border-radius: var(--radius-md);
            padding: 25px;
            border: 1px solid var(--border-brand);
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .usp-grid { display: flex; flex-direction: column; gap: 20px; margin: 40px 0; }

        .usp-tile {
            display: flex;
            gap: 20px;
            align-items: center;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
        }

        .usp-tile i { font-size: 1.5rem; color: var(--accent); width: 30px; text-align: center; }

        .usp-content strong { display: block; margin-bottom: 5px; }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin: 40px 0;
        }

        .payment-card {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            border: 1px solid var(--border-def);
        }

        .payment-card i { font-size: 1.8rem; color: var(--accent); margin-bottom: 10px; }

        .payment-card p { font-size: 0.85rem; color: var(--text-secondary); }

        .guide-steps { display: flex; flex-direction: column; gap: 25px; margin: 40px 0; }

        .guide-step {
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }

        .step-num {
            background: var(--accent);
            color: var(--btn-text);
            width: 35px;
            height: 35px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
        }

        .step-content h3 { margin: 0 0 10px; }

        .step-content a { color: inherit; text-decoration: none; }

        .download-section {
            background: var(--bg-elevated);
            padding: 30px;
            border-radius: var(--radius-lg);
            text-align: center;
            margin: 40px 0;
        }

        .player-guides { display: flex; flex-direction: column; gap: 20px; margin: 40px 0; }

        .guide-item {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border-left: 4px solid var(--accent);
        }

        .guide-meta { color: var(--text-muted); font-size: 0.8rem; margin-bottom: 10px; }

        .announcement-list { display: flex; flex-direction: column; gap: 15px; margin: 40px 0; }

        .announcement-card {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            display: flex;
            gap: 15px;
        }

        .announcement-card i { color: var(--accent); margin-top: 5px; }

        .faq-section { margin: 40px 0; }

        details {
            background: var(--bg-surface);
            margin-bottom: 10px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-def);
        }

        summary {
            padding: 15px;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
        }

        summary h3 { margin: 0; font-size: 1.1rem; }

        .faq-answer { padding: 0 15px 15px; color: var(--text-secondary); }

        .about-container {
            background: var(--bg-surface);
            padding: 30px;
            border-radius: var(--radius-lg);
            margin: 40px 0;
            border: 1px solid var(--border-brand);
        }

        .team-card {
            margin-top: 30px;
            padding: 20px;
            background: var(--bg-main);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-brand);
        }

        .security-section {
            background: var(--bg-surface);
            padding: 30px;
            border-radius: var(--radius-lg);
            margin: 40px 0;
        }

        .rg-links { display: flex; gap: 20px; margin: 20px 0; flex-wrap: wrap; }

        .rg-link {
            color: var(--accent);
            text-decoration: none;
            font-weight: 500;
            border-bottom: 1px solid var(--accent);
        }

        footer {
            margin-top: 60px;
            padding: 40px 0;
            border-top: 1px solid var(--border-def);
            text-align: center;
        }

        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            margin-bottom: 30px;
            text-align: left;
            max-width: 600px;
            margin-inline: auto;
        }

        .footer-link {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
        }

        .contact-line { margin-bottom: 20px; }

        .legal-line { color: var(--text-muted); font-size: 0.8rem; }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            background: var(--bg-surface);
            border-top: 1px solid var(--border-brand);
            display: flex;
            justify-content: space-around;
            padding: 10px 0 calc(10px + env(safe-area-inset-bottom));
            backdrop-filter: blur(15px);
            z-index: 1000;
        }

        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-decoration: none;
            color: var(--text-secondary);
            font-size: 0.75rem;
            gap: 5px;
        }

        .nav-item i { font-size: 1.2rem; }

        .util-link { color: var(--accent); text-decoration: none; font-weight: 500; }

        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(3, 1fr); }
            .game-grid { grid-template-columns: repeat(3, 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; }
            .category-grid { grid-template-columns: repeat(4, 1fr); }
            .game-grid { grid-template-columns: repeat(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
        }