:root {
            --brand-primary: #00A3FF;
            --brand-primary-hover: #33B5FF;
            --brand-secondary: #C0C0C8;
            --brand-secondary-hover: #D8D8E0;
            --brand-accent: #00FFD1;
            --bg-main: #050B18;
            --bg-surface: #0B1426;
            --bg-elevated: #131F38;
            --bg-overlay: rgba(5, 11, 24, 0.8);
            --text-primary: #F0F4FF;
            --text-secondary: #A5B1C7;
            --text-muted: #6B7B96;
            --text-brand-contrast: #050B18;
            --text-link: #00A3FF;
            --text-link-hover: #00FFD1;
            --btn-bg: #00A3FF;
            --btn-text: #050B18;
            --btn-hover-bg: #00FFD1;
            --btn-hover-text: #050B18;
            --semantic-success: #00C896;
            --semantic-error: #FF4D6D;
            --semantic-warning: #FFB800;
            --semantic-info: #4D9BFF;
            --border-default: #1D2B47;
            --border-strong: #2A3C5E;
            --border-brand: rgba(0, 163, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-pill: 9999px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --shadow-elevated: 0 12px 40px 0 rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 15px rgba(0, 255, 209, 0.5);
            --grad-brand: linear-gradient(135deg, #00A3FF 0%, #00FFD1 100%);
            --grad-hero: radial-gradient(circle at top right, #131F38, #050B18);
            --grad-btn: linear-gradient(180deg, #00A3FF 0%, #0082CC 100%);
        }

        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;
            padding-inline: 14px;
            padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
            overflow-x: hidden;
            background-color: var(--bg-main);
            color: var(--text-primary);
        }
        img, video, iframe { max-width: 100%; height: auto; display: block; }
        a { color: var(--text-link); text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: var(--text-link-hover); }
        
        .btn, .cta-button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            min-inline-size: 44px;
            padding: 12px 24px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            text-align: center;
        }
        .btn-primary { background: var(--grad-btn); color: var(--btn-text); }
        .btn-primary:hover { background: var(--btn-hover-bg); color: var(--btn-hover-text); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
        .btn-outline { background: transparent; border: 1px solid var(--border-brand); color: var(--text-primary); }
        .btn-outline:hover { background: var(--border-brand); color: var(--text-primary); }

        h1 { font-family: 'Be Vietnam Pro', sans-serif; font-size: clamp(1.6rem, 6.5vw, 2.4rem); line-height: 1.2; font-weight: 700; margin-bottom: 1rem; color: var(--text-primary); }
        h2 { font-family: 'Be Vietnam Pro', sans-serif; font-size: clamp(1.3rem, 5.2vw, 1.8rem); line-height: 1.25; margin-top: 2.5rem; margin-bottom: 1.25rem; font-weight: 700; color: var(--text-primary); }
        h3 { font-family: 'Be Vietnam Pro', sans-serif; font-size: clamp(1.05rem, 4.2vw, 1.25rem); line-height: 1.3; font-weight: 600; margin-bottom: 0.75rem; color: var(--text-primary); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(5, 11, 24, 0.8);
            backdrop-filter: blur(10px);
        }
        .header-logo-link { display: flex; align-items: center; gap: 8px; }
        .header-logo-link strong { font-size: 16px; font-weight: 400; color: var(--text-primary); }
        .header-actions { display: flex; gap: 12px; }

        main { width: 100%; }
        
        .hero-section {
            padding: 2rem 0;
            background: var(--grad-hero);
            text-align: center;
        }
        .hero-intro-text { max-width: 800px; margin: 0 auto 2rem; color: var(--text-secondary); }
        .hero-cta-wrapper { margin-bottom: 2rem; }
        .hero-cta-full { width: 100%; display: block; font-size: 1.25rem; }
        .hero-feature-pills { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
        .feature-pill { background: var(--bg-elevated); border: 1px solid var(--border-brand); padding: 6px 16px; border-radius: var(--radius-pill); font-size: 0.875rem; color: var(--text-secondary); }

        .banner-link { display: block; width: 100%; aspect-ratio: 2/1; overflow: hidden; }
        .banner-img { width: 100%; height: 100%; object-fit: cover; }

        .cat-nav { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 2rem 0; }
        .cat-tile { 
            background: var(--bg-surface); 
            border: 1px solid var(--border-default); 
            border-radius: var(--radius-md); 
            padding: 1.5rem; 
            text-align: center; 
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }
        .cat-tile:hover { border-color: var(--brand-primary); background: var(--bg-elevated); transform: translateY(-4px); }
        .cat-tile i { font-size: 2rem; color: var(--brand-primary); margin-bottom: 8px; }
        .cat-tile strong { display: block; font-size: 1.1rem; color: var(--text-primary); }
        .cat-tile span { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.4; }

        .game-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
        .game-card { 
            background: var(--bg-surface); 
            border-radius: var(--radius-md); 
            overflow: hidden; 
            border: 1px solid var(--border-default); 
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .game-card:hover { border-color: var(--brand-accent); box-shadow: var(--shadow-card); transform: scale(1.02); }
        .game-img { aspect-ratio: 1/1; width: 100%; object-fit: cover; }
        .game-info { padding: 12px; text-align: center; }
        .game-info h3 { margin: 0; font-size: 1rem; color: var(--text-primary); }

        .facts-section { margin: 3rem 0; }
        .facts-freshness { font-style: italic; color: var(--text-muted); font-size: 0.875rem; margin-bottom: 1rem; display: block; }
        .facts-table { width: 100%; border-collapse: collapse; background: var(--bg-surface); border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border-default); }
        .facts-table td { padding: 12px 16px; border-bottom: 1px solid var(--border-default); }
        .facts-table td:first-child { font-weight: 600; color: var(--text-secondary); width: 40%; }
        .facts-table td:last-child { color: var(--text-primary); }
        .facts-footer-link { display: block; margin-top: 12px; font-size: 0.875rem; text-align: center; color: var(--text-muted); }

        .toc-nav { 
            display: flex; 
            overflow-x: auto; 
            gap: 12px; 
            padding: 1rem 0; 
            margin: 2rem 0; 
            scrollbar-width: none; 
            -ms-overflow-style: none;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link { 
            background: var(--bg-elevated); 
            padding: 8px 20px; 
            border-radius: var(--radius-pill); 
            white-space: nowrap; 
            font-size: 0.9rem; 
            border: 1px solid var(--border-default); 
        }
        .toc-link:hover { border-color: var(--brand-primary); background: var(--bg-surface); }

        .promo-grid { display: grid; gap: 16px; }
        .promo-card { 
            background: var(--bg-surface); 
            border: 1px solid var(--border-default); 
            border-radius: var(--radius-lg); 
            padding: 24px; 
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .promo-card::before { 
            content: ""; 
            position: absolute; 
            top: 0; left: 0; width: 4px; height: 100%; 
            background: var(--grad-brand); 
        }
        .promo-card:hover { background: var(--bg-elevated); border-color: var(--border-brand); }

        .usp-grid { display: grid; gap: 16px; margin: 2rem 0; }
        .usp-tile { 
            display: flex; 
            align-items: center; 
            gap: 16px; 
            background: var(--bg-surface); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            border: 1px solid var(--border-default); 
        }
        .usp-tile i { font-size: 1.5rem; color: var(--brand-accent); width: 32px; text-align: center; }
        .usp-content strong { display: block; font-size: 1.1rem; color: var(--text-primary); margin-bottom: 4px; }
        .usp-content span { font-size: 0.9rem; color: var(--text-secondary); }

        .payment-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
        .pay-card { 
            background: var(--bg-surface); 
            border: 1px solid var(--border-default); 
            border-radius: var(--radius-md); 
            padding: 16px; 
            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: 1rem; color: var(--text-primary); }
        .pay-card p { font-size: 0.8rem; color: var(--text-secondary); margin: 0; line-height: 1.4; }

        .guide-steps { display: grid; gap: 20px; }
        .step-item { 
            display: flex; 
            gap: 16px; 
            background: var(--bg-surface); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            border: 1px solid var(--border-default); 
        }
        .step-num { 
            min-width: 36px; height: 36px; 
            background: var(--grad-brand); 
            color: var(--btn-text); 
            border-radius: 50%; 
            display: flex; 
            align-items: center; 
            justify-content: center; 
            font-weight: 700; 
        }
        .step-content h3 a { color: inherit; text-decoration: none; }

        .download-section { 
            background: var(--bg-surface); 
            padding: 2rem; 
            border-radius: var(--radius-lg); 
            text-align: center; 
            border: 1px solid var(--border-brand);
        }

        .player-guide-item { 
            background: var(--bg-surface); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            margin-bottom: 16px; 
            border-left: 4px solid var(--brand-primary);
        }
        .guide-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 12px; display: block; }

        .announcement-list { display: grid; gap: 16px; }
        .announce-card { 
            background: var(--bg-elevated); 
            padding: 16px; 
            border-radius: var(--radius-md); 
            border: 1px solid var(--border-default); 
            display: flex; 
            gap: 16px; 
        }
        .announce-card i { color: var(--brand-accent); margin-top: 4px; }
        .announce-date { font-size: 0.8rem; color: var(--text-muted); margin-top: 8px; display: block; }

        .faq-section { margin: 3rem 0; }
        .faq-item { background: var(--bg-surface); border-radius: var(--radius-md); margin-bottom: 12px; border: 1px solid var(--border-default); }
        .faq-item summary { padding: 16px; 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: 1.1rem; text-align: left; }
        .faq-answer { padding: 0 16px 16px; 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; 
            background: var(--bg-elevated); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            border: 1px solid var(--border-brand); 
        }

        .security-section { 
            padding: 2rem; 
            background: var(--bg-surface); 
            border-radius: var(--radius-lg); 
            border: 1px solid var(--border-default);
        }
        .security-list { list-style: none; padding: 0; margin: 1.5rem 0; }
        .security-list li { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 12px; color: var(--text-secondary); }
        .security-list i { color: var(--semantic-success); margin-top: 5px; }

        footer { 
            background: var(--bg-surface); 
            padding: 3rem 0 2rem; 
            margin-top: 4rem; 
            border-top: 1px solid var(--border-strong); 
            text-align: center; 
        }
        .footer-sitemap { 
            display: grid; 
            grid-template-columns: repeat(3, 1fr); 
            gap: 16px; 
            max-width: 900px; 
            margin: 0 auto 2rem; 
            text-align: center; 
        }
        .footer-sitemap a { color: var(--text-secondary); font-size: 0.9rem; }
        .footer-contact { margin-bottom: 2rem; color: var(--text-secondary); font-size: 0.9rem; }
        .footer-contact a { color: var(--brand-primary); font-weight: 600; }
        .footer-legal { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; padding: 0 1rem; }

        .navigator { 
            position: fixed; 
            inset-inline: 0; 
            bottom: 0; 
            background: rgba(11, 20, 38, 0.95); 
            backdrop-filter: blur(15px); 
            display: grid; 
            grid-template-columns: repeat(5, 1fr); 
            padding-bottom: env(safe-area-inset-bottom); 
            border-top: 1px solid var(--border-default); 
            z-index: 1000; 
        }
        .nav-item { 
            display: flex; 
            flex-direction: column; 
            align-items: center; 
            justify-content: center; 
            padding: 10px 0; 
            color: var(--text-secondary); 
            font-size: 0.7rem; 
            text-decoration: none; 
            gap: 4px;
        }
        .nav-item i { font-size: 1.2rem; }
        .nav-item:hover { color: var(--brand-primary); }

        .utility-link { text-align: center; display: block; padding: 1rem 0; color: var(--brand-primary); font-weight: 500; text-decoration: none; }

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

        @media (min-width: 768px) {
            body { padding-inline: 24px; padding-bottom: 24px; }
            .cat-nav { grid-template-columns: repeat(3, 1fr); }
            .game-grid { grid-template-columns: repeat(3, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .promo-grid { grid-template-columns: repeat(3, 1fr); }
            .navigator { display: none; }
        }

        @media (min-width: 1200px) {
            body { padding-inline: 32px; max-width: 1200px; margin-inline: auto; }
            .cat-nav { grid-template-columns: repeat(6, 1fr); }
            .game-grid { grid-template-columns: repeat(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .promo-grid { grid-template-columns: repeat(3, 1fr); }
        }