:root {
            --brand-primary: #0B2C5A;
            --brand-primary-hover: #143D7E;
            --brand-secondary: #C0C0C8;
            --brand-accent: #00F2FF;
            --bg-main: #050D1A;
            --bg-surface: #0A1628;
            --bg-elevated: #11223B;
            --text-primary: #E6F0FF;
            --text-secondary: #A3B7D1;
            --text-muted: #6B7D99;
            --btn-bg: #00F2FF;
            --btn-text: #050D1A;
            --btn-hover-bg: #70F9FF;
            --border-default: #1C2F4D;
            --border-brand: #00F2FF;
            --glow-cyan: 0 0 15px rgba(0, 242, 255, 0.6);
            --radius-md: 8px;
            --radius-lg: 16px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        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;
        }
        h1, h2, h3 { font-family: 'Rajdhani', sans-serif; color: var(--text-primary); font-weight: 700; letter-spacing: -0.02em; }
        h1 { font-size: clamp(1.6rem, 6.5vw, 2.75rem); line-height: 1.2; margin-bottom: 1rem; }
        h2 { font-size: clamp(1.3rem, 5.2vw, 2.25rem); line-height: 1.25; margin-top: 2.5rem; margin-bottom: 1.5rem; }
        h3 { font-size: clamp(1.05rem, 4.2vw, 1.75rem); line-height: 1.3; margin-bottom: 0.75rem; }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            max-width: 1200px;
            margin: 0 auto;
        }
        .header-brand { display: flex; align-items: center; gap: 8px; text-decoration: none; color: inherit; }
        .header-brand strong { font-size: 16px; font-weight: normal; }
        .header-actions { display: flex; gap: 10px; }
        
        .btn-nav {
            text-decoration: none;
            padding: 8px 16px;
            border-radius: var(--radius-md);
            font-size: 0.875rem;
            font-weight: 600;
            transition: transform 0.2s;
        }
        .btn-login { background: var(--bg-elevated); color: var(--text-primary); border: 1px solid var(--border-default); }
        .btn-register { background: var(--btn-bg); color: var(--btn-text); }
        .btn-nav:hover { transform: translateY(-2px); }

        .hero-section { text-align: center; padding: 2rem 0; }
        .hero-intro { max-width: 800px; margin: 0 auto 2rem; color: var(--text-secondary); }
        .btn-hero {
            display: block;
            width: 100%;
            background: linear-gradient(to right, #00F2FF, #70F9FF);
            color: var(--bg-main);
            text-align: center;
            padding: 16px;
            border-radius: var(--radius-lg);
            font-weight: 800;
            text-decoration: none;
            font-size: 1.25rem;
            box-shadow: var(--glow-cyan);
            transition: opacity 0.3s;
        }
        .btn-hero:hover { opacity: 0.9; }
        .hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 1.5rem; }
        .hero-tag {
            background: var(--bg-surface);
            border: 1px solid var(--border-brand);
            color: var(--brand-accent);
            padding: 4px 12px;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 500;
        }

        .banner-wrap { display: block; width: 100%; margin: 1rem 0; }
        .banner-wrap img { width: 100%; aspect-ratio: 2/1; object-fit: cover; border-radius: var(--radius-lg); }

        .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 2rem 0; }
        .cat-tile {
            background: var(--bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-lg);
            text-decoration: none;
            color: inherit;
            text-align: center;
            border: 1px solid var(--border-default);
            transition: border-color 0.3s;
        }
        .cat-tile:hover { border-color: var(--brand-accent); }
        .cat-tile i { font-size: 2rem; color: var(--brand-accent); margin-bottom: 10px; display: block; }
        .cat-tile strong { display: block; font-size: 1.1rem; margin-bottom: 5px; }
        .cat-tile span { font-size: 0.8rem; color: var(--text-muted); }

        .game-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; margin-bottom: 2rem; }
        .game-card {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            text-decoration: none;
            color: inherit;
            overflow: hidden;
            border: 1px solid var(--border-default);
            transition: transform 0.3s;
        }
        .game-card:hover { transform: scale(1.03); }
        .game-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
        .game-card h3 { padding: 10px; font-size: 1rem; margin: 0; text-align: center; font-weight: 500; }

        .facts-wrap { background: var(--bg-surface); padding: 1.5rem; border-radius: var(--radius-lg); border: 1px solid var(--border-brand); }
        .freshness-note { font-style: italic; color: var(--text-secondary); font-size: 0.875rem; margin-bottom: 1rem; display: block; }
        .facts-table { width: 100%; border-collapse: collapse; }
        .facts-table td { padding: 12px; border-bottom: 1px solid var(--border-default); }
        .facts-label { font-weight: 600; color: var(--text-muted); width: 40%; }
        .facts-value { color: var(--text-primary); }
        .terms-link { display: block; text-align: center; margin-top: 1rem; font-size: 0.8rem; color: var(--text-secondary); text-decoration: none; }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 10px;
            padding: 1rem 0;
            scrollbar-width: none;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            white-space: nowrap;
            background: var(--bg-elevated);
            color: var(--text-primary);
            padding: 8px 16px;
            border-radius: var(--radius-md);
            text-decoration: none;
            font-size: 0.875rem;
            border: 1px solid var(--border-default);
        }

        .promo-list { display: flex; flex-direction: column; gap: 20px; }
        .promo-card {
            background: var(--bg-elevated);
            padding: 2rem;
            border-radius: var(--radius-lg);
            border-left: 4px solid var(--brand-accent);
        }
        .promo-card h3 { margin-top: 0; }
        .promo-card p { color: var(--text-secondary); margin-bottom: 1.5rem; }
        .btn-promo {
            display: inline-block;
            background: var(--btn-bg);
            color: var(--bg-main);
            padding: 10px 20px;
            border-radius: var(--radius-md);
            text-decoration: none;
            font-weight: 700;
        }

        .usp-grid { display: flex; flex-direction: column; gap: 15px; }
        .usp-item {
            display: flex;
            gap: 15px;
            background: var(--bg-surface);
            padding: 1.25rem;
            border-radius: var(--radius-lg);
            align-items: center;
        }
        .usp-item i { font-size: 1.5rem; color: var(--brand-accent); min-width: 30px; }
        .usp-content strong { display: block; font-size: 1.1rem; }
        .usp-content p { margin: 0; font-size: 0.9rem; color: var(--text-muted); }

        .pay-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
        .pay-card {
            background: var(--bg-surface);
            padding: 1rem;
            border-radius: var(--radius-md);
            text-align: center;
            border: 1px solid var(--border-default);
        }
        .pay-card i { font-size: 1.5rem; color: var(--brand-accent); margin-bottom: 8px; display: block; }
        .pay-card strong { display: block; font-size: 0.9rem; margin-bottom: 5px; }
        .pay-card p { font-size: 0.75rem; color: var(--text-muted); margin: 0; }

        .guide-steps { display: flex; flex-direction: column; gap: 20px; }
        .step-item { display: flex; gap: 15px; align-items: flex-start; }
        .step-num {
            background: var(--brand-accent);
            color: var(--bg-main);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            flex-shrink: 0;
        }
        .step-content h3 { margin: 0 0 5px; }
        .step-content h3 a { color: inherit; text-decoration: none; }

        .app-box {
            background: linear-gradient(135deg, var(--bg-surface), var(--bg-elevated));
            padding: 2rem;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border-default);
        }
        .btn-download {
            display: inline-block;
            background: var(--brand-accent);
            color: var(--bg-main);
            padding: 14px 28px;
            border-radius: var(--radius-pill);
            text-decoration: none;
            font-weight: 800;
            margin-top: 1rem;
        }

        .player-guide-item {
            background: var(--bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-lg);
            margin-bottom: 15px;
            border: 1px solid var(--border-default);
        }
        .guide-meta { font-size: 0.8rem; color: var(--text-muted); display: block; margin-bottom: 10px; }

        .announcement-list { display: flex; flex-direction: column; gap: 15px; }
        .announcement-card {
            background: var(--bg-elevated);
            padding: 1.25rem;
            border-radius: var(--radius-md);
            display: flex;
            gap: 15px;
        }
        .announcement-card i { color: var(--brand-accent); font-size: 1.2rem; margin-top: 4px; }
        .announcement-body h3 { font-size: 1.1rem; margin: 0 0 5px; }
        .announcement-body p { font-size: 0.9rem; color: var(--text-secondary); margin: 0 0 8px; }
        .announcement-date { font-size: 0.75rem; color: var(--text-muted); }

        .faq-item { margin-bottom: 10px; border-bottom: 1px solid var(--border-default); }
        .faq-item summary { cursor: pointer; list-style: none; padding: 15px 0; }
        .faq-item summary h3 { margin: 0; font-size: 1.1rem; color: var(--text-primary); }
        .faq-answer { padding-bottom: 15px; color: var(--text-secondary); font-size: 0.95rem; }
        .utility-link { color: var(--brand-accent); text-decoration: none; font-weight: 600; }

        .about-box { padding: 2rem; background: var(--bg-surface); border-radius: var(--radius-lg); margin-bottom: 2rem; }
        .team-card {
            background: var(--bg-main);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
            margin-top: 1.5rem;
        }

        .security-section { padding: 2rem 0; border-top: 1px solid var(--border-default); }
        .security-links { display: flex; gap: 20px; margin: 1.5rem 0; }
        .security-links a { color: var(--brand-accent); text-decoration: none; font-size: 0.9rem; border: 1px solid var(--brand-accent); padding: 5px 10px; border-radius: 4px; }

        footer {
            margin-top: 3rem;
            padding-top: 2rem;
            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: 0 auto 2rem;
            text-align: left;
        }
        .footer-sitemap a { color: var(--text-muted); text-decoration: none; font-size: 0.85rem; }
        .footer-contact { margin-bottom: 1.5rem; color: var(--text-secondary); }
        .footer-contact a { color: var(--brand-accent); text-decoration: none; }
        .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);
            display: flex;
            justify-content: space-around;
            padding: 10px 0 calc(10px + env(safe-area-inset-bottom));
            border-top: 1px solid var(--border-brand);
            z-index: 100;
        }
        .nav-item {
            text-decoration: none;
            color: var(--text-secondary);
            display: flex;
            flex-direction: column;
            align-items: center;
            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; }
            .category-grid { grid-template-columns: repeat(3, 1fr); }
            .game-grid { grid-template-columns: repeat(4, 1fr); }
            .pay-grid { grid-template-columns: repeat(4, 1fr); }
            .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); }
        }