:root {
            --primary: #0B2C5E;
            --primary-hover: #15418F;
            --secondary: #C0C0C8;
            --secondary-hover: #E2E2E9;
            --accent: #00F2FF;
            --bg-main: #050D1A;
            --bg-surface: #0C1729;
            --bg-elevated: #14223B;
            --text-primary: #F0F4F8;
            --text-secondary: #AAB8C8;
            --text-muted: #6B7B8E;
            --border-default: #1C2D48;
            --border-brand: rgba(0, 242, 255, 0.4);
            --btn-bg: #00F2FF;
            --btn-text: #050D1A;
            --btn-hover-bg: #B2F9FF;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --radius-md: 12px;
            --radius-lg: 24px;
            --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;
        }

        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: var(--accent); transition: color 0.3s ease; }
        a:hover { color: #B2F9FF; }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-block: 1rem;
            background: var(--bg-surface);
            border-bottom: 1px solid var(--border-default);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-brand { display: flex; align-items: center; gap: 8px; }
        .header-brand strong { font-size: 16px; font-weight: normal; color: var(--text-primary); }
        .header-nav { display: flex; gap: 10px; }
        .btn-nav {
            padding: 8px 16px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.875rem;
            transition: all 0.3s ease;
        }
        .btn-login { background: transparent; color: var(--text-primary); border: 1px solid var(--border-default); }
        .btn-login:hover { background: var(--bg-elevated); }
        .btn-reg { background: var(--btn-bg); color: var(--btn-text); border: 1px solid var(--btn-bg); }
        .btn-reg:hover { background: var(--btn-hover-bg); }

        main { width: 100%; }
        
        .hero-section {
            padding-block: 3rem 1.5rem;
            text-align: center;
            background: radial-gradient(circle at center, #14223B 0%, #050D1A 100%);
        }
        h1 {
            font-size: clamp(1.6rem, 6.5vw, 2.4rem);
            line-height: 1.2;
            margin-bottom: 1.5rem;
            color: var(--text-primary);
        }
        .hero-intro {
            max-width: 800px;
            margin: 0 auto 2rem;
            color: var(--text-secondary);
        }
        .btn-hero {
            display: block;
            width: 100%;
            max-width: 400px;
            margin: 0 auto;
            background: linear-gradient(180deg, #00F2FF 0%, #00C9D6 100%);
            color: var(--btn-text);
            padding: 16px;
            border-radius: var(--radius-pill);
            font-weight: 700;
            font-size: 1.25rem;
            box-shadow: 0 0 15px rgba(0, 242, 255, 0.5);
        }
        .hero-tags {
            display: flex;
            justify-content: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 2rem;
        }
        .tag-pill {
            background: rgba(0, 242, 255, 0.1);
            border: 1px solid var(--border-brand);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.8rem;
            color: var(--accent);
        }

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

        .cat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-bottom: 3rem;
        }
        .cat-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            transition: transform 0.3s ease, border-color 0.3s ease;
        }
        .cat-tile:hover { transform: translateY(-5px); border-color: var(--accent); }
        .cat-tile i { font-size: 2rem; color: var(--accent); margin-bottom: 10px; }
        .cat-tile span { display: block; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
        .cat-tile p { font-size: 0.85rem; color: var(--text-secondary); margin: 0; }

        .section-title {
            font-size: clamp(1.3rem, 5.2vw, 1.8rem);
            line-height: 1.25;
            margin-top: 3rem;
            margin-bottom: 1.5rem;
            color: var(--text-primary);
            text-align: center;
        }

        .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: border-color 0.3s ease;
        }
        .game-card:hover { border-color: var(--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;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .facts-container {
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            padding: 2rem;
            border: 1px solid var(--border-default);
            margin-bottom: 2rem;
        }
        .freshness-notice {
            font-style: italic;
            color: var(--text-muted);
            font-size: 0.875rem;
            margin-bottom: 1.5rem;
            text-align: center;
        }
        .facts-table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 1rem;
        }
        .facts-table td {
            padding: 12px;
            border-bottom: 1px solid var(--border-default);
            color: var(--text-secondary);
        }
        .facts-table td:first-child { font-weight: 600; color: var(--text-primary); width: 40%; }
        .terms-link {
            display: block;
            text-align: center;
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        .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-elevated);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            font-size: 0.9rem;
            border: 1px solid var(--border-default);
        }

        .promo-stack { display: flex; flex-direction: column; gap: 20px; }
        .promo-card {
            background: linear-gradient(135deg, #0B2C5E 0%, #14223B 100%);
            border: 1px solid var(--border-brand);
            padding: 24px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }
        .promo-card h3 { margin-top: 0; color: var(--accent); }
        .promo-card p { color: var(--text-secondary); margin-bottom: 20px; }
        .btn-promo {
            display: inline-block;
            background: var(--btn-bg);
            color: var(--btn-text);
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
        }

        .usp-grid { display: flex; flex-direction: column; gap: 15px; }
        .usp-tile {
            display: flex;
            gap: 15px;
            background: var(--bg-surface);
            padding: 15px;
            border-radius: var(--radius-md);
            align-items: center;
            border: 1px solid var(--border-default);
        }
        .usp-tile i { font-size: 1.5rem; color: var(--accent); min-width: 30px; }
        .usp-tile strong { display: block; color: var(--text-primary); }
        .usp-tile p { margin: 0; font-size: 0.9rem; color: var(--text-secondary); }

        .pay-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }
        .pay-card {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            border: 1px solid var(--border-default);
        }
        .pay-card i { font-size: 1.8rem; color: var(--accent); margin-bottom: 10px; }
        .pay-card h3 { font-size: 1.1rem; margin: 10px 0; color: var(--text-primary); }
        .pay-card p { font-size: 0.85rem; color: var(--text-secondary); margin: 0; }

        .guide-steps { display: flex; flex-direction: column; gap: 20px; }
        .step-item {
            display: flex;
            gap: 20px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            align-items: flex-start;
        }
        .step-num {
            background: var(--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 10px; color: var(--text-primary); }
        .step-content h3 a { color: inherit; }
        .step-content p { margin: 0; color: var(--text-secondary); font-size: 0.95rem; }

        .app-section {
            background: var(--bg-surface);
            padding: 2rem;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border-default);
        }
        .btn-download {
            display: block;
            background: var(--btn-bg);
            color: var(--btn-text);
            padding: 16px;
            border-radius: var(--radius-pill);
            font-weight: 700;
            margin-top: 20px;
        }

        .player-guide-list { display: flex; flex-direction: column; gap: 20px; }
        .guide-item {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border-left: 4px solid var(--accent);
        }
        .guide-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; }

        .announcement-list { display: flex; flex-direction: column; gap: 15px; }
        .ann-item {
            display: flex;
            gap: 15px;
            background: var(--bg-elevated);
            padding: 15px;
            border-radius: var(--radius-md);
        }
        .ann-item i { color: var(--accent); margin-top: 5px; }
        .ann-text h3 { margin: 0 0 5px; font-size: 1.1rem; }
        .ann-text p { margin: 0 0 10px; font-size: 0.9rem; color: var(--text-secondary); }
        .ann-date { font-size: 0.8rem; color: var(--text-muted); }

        .faq-list { display: flex; flex-direction: column; gap: 10px; }
        details { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-md); }
        summary { padding: 15px; cursor: pointer; list-style: none; display: flex; align-items: center; }
        summary h3 { margin: 0; font-size: 1.1rem; color: var(--text-primary); }
        .faq-answer { padding: 0 15px 15px; color: var(--text-secondary); font-size: 0.95rem; }

        .about-box {
            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);
            text-align: center;
            border: 1px solid var(--border-default);
        }
        .security-links {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-block: 20px;
            flex-wrap: wrap;
        }
        .security-links a {
            background: var(--bg-elevated);
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
        }

        footer {
            background: var(--bg-surface);
            padding-block: 3rem 2rem;
            border-top: 1px solid var(--border-default);
            text-align: center;
            margin-top: 4rem;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            max-width: 600px;
            margin: 0 auto 2rem;
            text-align: center;
        }
        .footer-sitemap a { font-size: 0.85rem; color: var(--text-secondary); }
        .footer-contact { margin-bottom: 1.5rem; color: var(--text-secondary); }
        .footer-legal { font-size: 0.8rem; color: var(--text-muted); line-height: 1.4; }

        .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-block: 10px;
            padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
            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; }
        .nav-item:hover { color: var(--accent); }

        .util-link { color: var(--text-muted); font-size: 0.9rem; text-decoration: underline; }

        @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(3, 1fr); }
            .pay-grid { grid-template-columns: repeat(4, 1fr); }
            .navigator { display: none; }
            .hero-section { padding-block: 5rem 3rem; }
        }

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

        section {
            content-visibility: auto;
            contain-intrinsic-size: 1px 500px;
        }