:root {
            --brand-primary: #1A2B4C;
            --brand-primary-hover: #253B6B;
            --brand-secondary: #C0C0C8;
            --brand-accent: #00F5FF;
            --bg-main: #050B1A;
            --bg-surface: #0D162B;
            --bg-elevated: #16223D;
            --text-primary: #E6EEFF;
            --text-secondary: #B0C4DE;
            --text-muted: #788BA8;
            --btn-bg: #00F5FF;
            --btn-text: #050B1A;
            --btn-hover: #80FFFF;
            --border-def: #1E2D4D;
            --border-strong: #314266;
            --border-accent: #00F5FF;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --glow: 0 0 15px rgba(0, 245, 255, 0.4);
        }
        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-block: 12px;
            max-width: 1200px;
            margin-inline: auto;
        }
        .header-logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            color: inherit;
        }
        .header-logo-link strong {
            font-size: 16px;
            font-weight: 400;
        }
        .header-actions {
            display: flex;
            gap: 10px;
        }
        .btn-nav {
            text-decoration: none;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            transition: background 0.3s ease;
        }
        .btn-login {
            color: var(--text-primary);
            border: 1px solid var(--border-strong);
        }
        .btn-register {
            background-color: var(--btn-bg);
            color: var(--btn-text);
        }
        .btn-register:hover { background-color: var(--btn-hover); }
        .btn-login:hover { background-color: var(--bg-elevated); }

        main { width: 100%; }
        .hero-section {
            text-align: center;
            padding-block: 40px 20px;
            background: radial-gradient(circle at top right, #1A3A5F, #050B1A 70%);
        }
        h1 {
            font-size: clamp(1.6rem, 6.5vw, 2.4rem);
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .hero-intro {
            max-width: 800px;
            margin: 0 auto 30px;
            color: var(--text-secondary);
            padding-inline: 10px;
        }
        .cta-main {
            display: block;
            width: 100%;
            max-width: 400px;
            margin: 0 auto 24px;
            background: linear-gradient(180deg, #00F5FF 0%, #00C4CC 100%);
            color: var(--btn-text);
            text-decoration: none;
            font-weight: 700;
            font-size: 1.2rem;
            padding: 16px;
            border-radius: var(--radius-pill);
            box-shadow: var(--glow);
            transition: transform 0.2s ease;
        }
        .cta-main:hover { transform: scale(1.02); }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
            margin-bottom: 20px;
        }
        .tag-pill {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-def);
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .banner-link {
            display: block;
            width: 100%;
            aspect-ratio: 2 / 1;
            overflow: hidden;
            border-radius: 0;
        }
        .banner-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .cat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-block: 30px 0;
        }
        .cat-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-def);
            padding: 20px;
            border-radius: var(--radius-md);
            text-decoration: none;
            color: inherit;
            text-align: center;
            transition: border-color 0.3s ease;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }
        .cat-tile:hover { border-color: var(--border-accent); }
        .cat-tile i { font-size: 2rem; color: var(--brand-accent); }
        .cat-tile strong { display: block; color: var(--text-primary); margin-bottom: 4px; }
        .cat-tile span { font-size: 0.85rem; color: var(--text-muted); line-height: 1.4; }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-block: 20px 0;
        }
        .game-card {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            text-decoration: none;
            color: inherit;
            overflow: hidden;
            border: 1px solid var(--border-def);
            transition: transform 0.2s ease;
        }
        .game-card:hover { transform: translateY(-5px); 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: 12px;
            margin: 0;
            text-align: center;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        h2 {
            font-size: clamp(1.3rem, 5.2vw, 1.8rem);
            line-height: 1.25;
            margin-top: 2.5rem;
            margin-bottom: 1.5rem;
            color: var(--text-primary);
            border-left: 4px solid var(--brand-accent);
            padding-left: 12px;
        }
        .fact-table {
            width: 100%;
            border-collapse: collapse;
            margin-block: 15px 0;
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .fact-table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-def);
        }
        .fact-table td:first-child {
            font-weight: 600;
            color: var(--text-muted);
            width: 40%;
        }
        .fact-table td:last-child { color: var(--text-primary); }
        .freshness-notice {
            font-style: italic;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            display: block;
        }
        .terms-link-wrapper {
            margin-top: 12px;
            font-size: 0.85rem;
            text-align: center;
        }
        .terms-link-wrapper a { color: var(--brand-accent); text-decoration: none; }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding-block: 20px;
            scrollbar-width: none;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            background: var(--bg-elevated);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            text-decoration: none;
            color: var(--text-secondary);
            white-space: nowrap;
            font-size: 0.9rem;
            border: 1px solid var(--border-def);
        }
        .toc-link:hover { color: var(--brand-accent); border-color: var(--brand-accent); }

        .promo-stack {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-block: 20px 0;
        }
        .promo-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-strong);
            padding: 24px;
            border-radius: var(--radius-lg);
            backdrop-filter: blur(10px);
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .promo-card h3 { margin: 0; color: var(--brand-accent); }
        .promo-card p { margin: 0; color: var(--text-secondary); font-size: 0.95rem; }
        .promo-btn {
            align-self: flex-start;
            background: var(--btn-bg);
            color: var(--btn-text);
            text-decoration: none;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
        }

        .usp-grid {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-block: 30px 0;
        }
        .usp-tile {
            display: flex;
            gap: 16px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            align-items: flex-start;
        }
        .usp-tile i { font-size: 1.5rem; color: var(--brand-accent); margin-top: 4px; }
        .usp-content strong { display: block; margin-bottom: 4px; color: var(--text-primary); }
        .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;
            margin-block: 20px 0;
        }
        .pay-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-def);
            padding: 16px;
            border-radius: var(--radius-md);
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }
        .pay-card i { font-size: 1.5rem; color: var(--text-primary); }
        .pay-card strong { font-size: 0.9rem; display: block; }
        .pay-card p { margin: 0; font-size: 0.8rem; color: var(--text-muted); }

        .guide-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
            margin-block: 20px 0;
        }
        .guide-item {
            border-bottom: 1px solid var(--border-def);
            padding-bottom: 20px;
        }
        .guide-item h3 { margin: 0 0 4px 0; }
        .guide-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: block;
        }
        .guide-text { margin: 0; color: var(--text-secondary); font-size: 0.95rem; }

        .step-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-block: 20px 0;
        }
        .step-row {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .step-num {
            background: var(--brand-accent);
            color: var(--btn-text);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
        }
        .step-content h3 { margin: 0 0 8px 0; font-size: 1.1rem; }
        .step-content h3 a { color: inherit; text-decoration: none; }
        .step-content p { margin: 0; color: var(--text-secondary); font-size: 0.9rem; }

        .download-box {
            background: var(--bg-elevated);
            padding: 30px;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border-strong);
        }
        .download-text { margin-bottom: 20px; color: var(--text-secondary); }
        .btn-download {
            display: inline-block;
            background: var(--btn-bg);
            color: var(--btn-text);
            text-decoration: none;
            padding: 14px 30px;
            border-radius: var(--radius-md);
            font-weight: 700;
        }

        .announcement-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-block: 20px 0;
        }
        .announcement-card {
            display: flex;
            gap: 16px;
            background: var(--bg-surface);
            padding: 16px;
            border-radius: var(--radius-md);
            border-left: 4px solid var(--brand-accent);
        }
        .ann-icon { font-size: 1.2rem; color: var(--brand-accent); margin-top: 4px; }
        .ann-content h3 { margin: 0 0 8px 0; font-size: 1rem; }
        .ann-content p { margin: 0 0 8px 0; font-size: 0.85rem; color: var(--text-secondary); }
        .ann-date { font-size: 0.75rem; color: var(--text-muted); }

        .faq-container {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-block: 20px 0;
        }
        .faq-item {
            background: var(--bg-surface);
            border: 1px solid var(--border-def);
            border-radius: var(--radius-md);
        }
        .faq-item summary {
            padding: 16px;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-item summary h3 { margin: 0; font-size: 1rem; color: var(--text-primary); }
        .faq-item p {
            padding: 0 16px 16px;
            margin: 0;
            color: var(--text-secondary);
            font-size: 0.9rem;
            border-top: 1px solid var(--border-def);
            padding-top: 16px;
        }

        .trust-statement {
            background: var(--bg-surface);
            padding: 24px;
            border-radius: var(--radius-lg);
            margin-block: 20px 0;
        }
        .team-card {
            margin-top: 20px;
            padding: 20px;
            background: var(--bg-elevated);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-strong);
        }
        .team-card h3 { margin: 0 0 10px 0; font-size: 1.1rem; }
        .team-card p { margin: 0 0 8px 0; font-size: 0.85rem; color: var(--text-secondary); }

        .security-section {
            background: var(--bg-surface);
            padding: 24px;
            border-radius: var(--radius-lg);
            margin-block: 20px 0;
        }
        .sec-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-block: 20px 0;
        }
        .sec-item {
            background: var(--bg-main);
            padding: 16px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-def);
        }
        .sec-item strong { display: block; margin-bottom: 8px; color: var(--brand-accent); }
        .sec-item p { margin: 0; font-size: 0.85rem; color: var(--text-secondary); }
        .ext-links { display: flex; gap: 15px; margin-block: 15px; }
        .ext-links a { color: var(--text-muted); font-size: 0.85rem; text-decoration: underline; }

        footer {
            margin-top: 40px;
            padding-block: 30px 0;
            border-top: 1px solid var(--border-def);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 20px;
        }
        .footer-sitemap a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.85rem;
        }
        .footer-contact { margin-bottom: 20px; font-size: 0.9rem; }
        .footer-contact a { color: var(--brand-accent); text-decoration: none; }
        .footer-legal { font-size: 0.8rem; color: var(--text-muted); }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            height: 64px;
            background: var(--bg-surface);
            border-top: 1px solid var(--border-strong);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding-bottom: env(safe-area-inset-bottom);
            z-index: 1000;
            backdrop-filter: blur(10px);
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-decoration: none;
            color: var(--text-muted);
            font-size: 0.7rem;
            gap: 4px;
        }
        .nav-item i { font-size: 1.2rem; }
        .nav-item:hover { color: var(--brand-accent); }

        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); }
            .sec-grid { grid-template-columns: repeat(2, 1fr); }
            .navigator { display: none; }
            .hero-section { padding-block: 60px 40px; }
        }
        @media (min-width: 1200px) {
            body { padding-inline: 32px; max-width: 1200px; margin-inline: auto; }
            .cat-grid { grid-template-columns: repeat(4, 1fr); }
        }