:root {
            --brand-primary: #1A3A6D;
            --brand-primary-hover: #254B8C;
            --brand-secondary: #C0C0C5;
            --brand-accent: #00F5FF;
            --bg-main: #060C18;
            --bg-surface: #0D1626;
            --bg-elevated: #152138;
            --text-primary: #E6EBF2;
            --text-secondary: #AAB4C8;
            --text-muted: #748299;
            --text-link: #00F5FF;
            --btn-bg: #00F5FF;
            --btn-text: #060C18;
            --border-default: #1B2841;
            --radius-sm: 2px;
            --radius-md: 4px;
            --radius-lg: 8px;
            --shadow-card: 0 4px 0 #000000;
        }

        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: 'Barlow Condensed', sans-serif; letter-spacing: -0.02em; line-height: 1.1; color: var(--text-primary); }
        h1 { font-size: clamp(1.6rem, 6.5vw, 2.4rem); margin: 0 0 1rem 0; }
        h2 { font-size: clamp(1.3rem, 5.2vw, 1.8rem); margin-top: 2.5rem; margin-bottom: 1.25rem; border-left: 4px solid var(--brand-accent); padding-left: 12px; }
        h3 { font-size: clamp(1.05rem, 4.2vw, 1.25rem); margin-top: 1.5rem; margin-bottom: 0.75rem; }

        a { color: var(--text-link); text-decoration: none; transition: color 0.2s ease; }
        a:hover { color: #70FFFF; }
        img { max-width: 100%; height: auto; display: block; }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-default);
        }
        .header-logo-link { display: flex; align-items: center; gap: 8px; }
        .header-logo-link strong { font-size: 16px; font-weight: normal; }
        .header-nav-btns { display: flex; gap: 10px; }

        .btn-primary, .btn-outline, .cta-block {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 12px 20px;
            font-weight: 600;
            border-radius: var(--radius-md);
            cursor: pointer;
            text-align: center;
            transition: transform 0.1s ease, background-color 0.2s ease;
            box-shadow: var(--shadow-card);
        }
        .btn-primary { background: var(--btn-bg); color: var(--btn-text); }
        .btn-primary:hover { background: #70FFFF; }
        .btn-outline { background: transparent; border: 2px solid var(--brand-accent); color: var(--brand-accent); }
        .btn-outline:hover { background: rgba(0, 245, 255, 0.1); }
        .cta-block { width: 100%; font-size: 1.2rem; margin: 20px 0; background: linear-gradient(to bottom, #00F5FF 0%, #00D1DD 100%); color: var(--btn-text); }
        .cta-block:active { transform: translateY(2px); box-shadow: none; }

        .hero-section { text-align: center; padding: 30px 0; }
        .hero-intro { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 24px; max-width: 800px; margin-inline: auto; }
        .hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 20px; }
        .hero-tag { background: var(--bg-elevated); color: var(--text-secondary); padding: 4px 12px; border-radius: var(--radius-pill); font-size: 0.85rem; border: 1px solid var(--border-default); }

        .banner-wrap { margin: 20px 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-bottom: 30px; }
        .category-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: 8px; 
        }
        .category-tile i { font-size: 2rem; color: var(--brand-accent); margin-bottom: 8px; }
        .category-tile span { display: block; font-weight: bold; font-size: 1.1rem; margin-bottom: 4px; }
        .category-tile p { font-size: 0.85rem; color: var(--text-muted); margin: 0; line-height: 1.4; }

        .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); 
            transition: border-color 0.3s ease; 
        }
        .game-card:hover { border-color: var(--brand-accent); }
        .game-card img { aspect-ratio: 1 / 1; object-fit: cover; width: 100%; }
        .game-card h3 { font-size: 1rem; padding: 12px; margin: 0; text-align: center; color: var(--text-primary); }

        .facts-table-wrap { background: var(--bg-surface); border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 15px; border: 1px solid var(--border-default); }
        .facts-notice { font-style: italic; color: var(--text-muted); font-size: 0.85rem; padding: 10px; text-align: center; border-bottom: 1px solid var(--border-default); }
        .facts-table { width: 100%; border-collapse: collapse; }
        .facts-table td { padding: 12px; border-bottom: 1px solid var(--border-default); font-size: 0.95rem; }
        .facts-table td:first-child { font-weight: 600; color: var(--text-secondary); width: 40%; background: rgba(255,255,255,0.02); }
        .facts-footer-link { display: block; text-align: center; font-size: 0.85rem; margin-top: 10px; color: var(--text-muted); }

        .toc-nav { 
            display: flex; 
            overflow-x: auto; 
            gap: 10px; 
            padding: 15px 0; 
            scrollbar-width: none; 
            border-bottom: 1px solid var(--border-default); 
            margin-bottom: 30px;
        }
        .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-container { display: flex; flex-direction: column; gap: 20px; }
        .promo-card { background: var(--bg-surface); padding: 24px; border-radius: var(--radius-lg); border: 1px solid var(--border-default); position: relative; }
        .promo-card h3 { margin-top: 0; color: var(--brand-accent); }
        .promo-card p { color: var(--text-secondary); margin-bottom: 20px; }

        .usp-bar { display: flex; flex-direction: column; gap: 15px; }
        .usp-item { 
            display: flex; 
            align-items: flex-start; 
            gap: 15px; 
            background: var(--bg-surface); 
            padding: 15px; 
            border-radius: var(--radius-lg); 
            border: 1px solid var(--border-default); 
        }
        .usp-item i { font-size: 1.5rem; color: var(--brand-accent); margin-top: 4px; }
        .usp-item strong { display: block; font-size: 1.1rem; margin-bottom: 4px; }
        .usp-item p { margin: 0; font-size: 0.9rem; color: var(--text-secondary); }

        .guide-steps { display: flex; flex-direction: column; gap: 20px; }
        .guide-step { display: flex; gap: 15px; align-items: flex-start; background: var(--bg-surface); padding: 20px; border-radius: var(--radius-lg); border: 1px solid var(--border-default); }
        .step-badge { 
            background: var(--brand-accent); 
            color: var(--btn-text); 
            min-width: 32px; 
            height: 32px; 
            border-radius: 50%; 
            display: flex; 
            align-items: center; 
            justify-content: center; 
            font-weight: bold; 
            flex-shrink: 0; 
        }
        .guide-step h3 { margin: 0 0 10px 0; font-size: 1.15rem; }
        .guide-step a { color: inherit; text-decoration: none; }

        .payment-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
        .pay-card { 
            background: var(--bg-surface); 
            padding: 16px; 
            border-radius: var(--radius-lg); 
            text-align: center; 
            border: 1px solid var(--border-default); 
            display: flex; 
            flex-direction: column; 
            align-items: center; 
            gap: 10px; 
        }
        .pay-card i { font-size: 1.8rem; color: var(--brand-accent); }
        .pay-card strong { display: block; font-size: 1rem; }
        .pay-card p { font-size: 0.8rem; color: var(--text-muted); margin: 0; }

        .app-section { background: var(--bg-surface); padding: 30px 20px; border-radius: var(--radius-lg); text-align: center; border: 1px solid var(--border-default); }
        .app-content { max-width: 600px; margin-inline: auto; }

        .player-guide-item { background: var(--bg-surface); padding: 20px; border-radius: var(--radius-lg); border: 1px solid var(--border-default); margin-bottom: 15px; }
        .guide-meta { font-size: 0.8rem; color: var(--text-muted); font-style: italic; margin-bottom: 10px; display: block; }

        .announcement-list { display: flex; flex-direction: column; gap: 15px; }
        .announcement-card { 
            background: var(--bg-surface); 
            padding: 15px; 
            border-radius: var(--radius-lg); 
            border: 1px solid var(--border-default); 
            display: flex; 
            gap: 15px; 
        }
        .announcement-card i { font-size: 1.2rem; color: var(--brand-accent); margin-top: 4px; }
        .announcement-body h3 { margin: 0 0 8px 0; font-size: 1.1rem; }
        .announcement-body p { margin: 0 0 8px 0; font-size: 0.9rem; color: var(--text-secondary); }
        .announcement-date { font-size: 0.75rem; color: var(--text-muted); }

        .faq-item { background: var(--bg-surface); border-radius: var(--radius-lg); border: 1px solid var(--border-default); margin-bottom: 10px; }
        .faq-item summary { padding: 15px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary h3 { margin: 0; font-size: 1.05rem; pointer-events: none; }
        .faq-item p { padding: 0 15px 15px 15px; margin: 0; color: var(--text-secondary); font-size: 0.95rem; }

        .about-section { background: var(--bg-surface); padding: 30px 20px; border-radius: var(--radius-lg); border: 1px solid var(--border-default); }
        .team-card { 
            background: var(--bg-elevated); 
            padding: 20px; 
            border-radius: var(--radius-lg); 
            margin-top: 25px; 
            border-left: 4px solid var(--brand-accent); 
        }
        .team-card h3 { margin-top: 0; font-size: 1.2rem; }
        .team-card p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 8px; }

        .security-section { padding: 20px; background: var(--bg-surface); border-radius: var(--radius-lg); border: 1px solid var(--border-default); }
        .security-links { display: flex; flex-wrap: wrap; gap: 15px; margin: 20px 0; }
        .security-link { background: var(--bg-main); padding: 8px 15px; border-radius: var(--radius-md); border: 1px solid var(--border-default); font-size: 0.9rem; }

        footer { 
            margin-top: 50px; 
            padding: 40px 0 20px 0; 
            border-top: 1px solid var(--border-default); 
            text-align: center; 
        }
        .footer-sitemap { 
            display: grid; 
            grid-template-columns: repeat(3, 1fr); 
            gap: 10px; 
            margin-bottom: 30px; 
            text-align: left; 
        }
        .footer-sitemap a { font-size: 0.85rem; color: var(--text-secondary); }
        .footer-contact { margin-bottom: 20px; font-size: 0.9rem; }
        .footer-legal { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }

        .navigator { 
            position: fixed; 
            inset-inline: 0; 
            bottom: 0; 
            height: 72px; 
            background: var(--bg-surface); 
            border-top: 1px solid var(--border-default); 
            display: flex; 
            justify-content: space-around; 
            align-items: center; 
            padding-bottom: env(safe-area-inset-bottom); 
            z-index: 100; 
        }
        .nav-item { 
            display: flex; 
            flex-direction: column; 
            align-items: center; 
            gap: 4px; 
            color: var(--text-secondary); 
            text-decoration: none; 
            font-size: 0.7rem; 
        }
        .nav-item i { font-size: 1.3rem; }

        .util-link { color: var(--text-link); text-decoration: underline; 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(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .navigator { position: static; display: none; }
            .hero-section { padding: 60px 0; }
        }
        @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(7, 1fr); }
        }