:root {
            --color-primary: #0F172A;
            --color-primary-hover: #1E293B;
            --color-secondary: #94A3B8;
            --color-secondary-hover: #CBD5E1;
            --color-accent: #06B6D4;
            --color-bg-main: #020617;
            --color-bg-surface: #0F172A;
            --color-bg-elevated: #1E293B;
            --color-text-primary: #F1F5F9;
            --color-text-secondary: #94A3B8;
            --color-text-muted: #64748B;
            --color-text-link: #22D3EE;
            --color-text-link-hover: #A5F3FC;
            --color-btn-bg: #06B6D4;
            --color-btn-text: #020617;
            --color-btn-hover-bg: #22D3EE;
            --color-border-default: #1E293B;
            --color-border-brand: rgba(6, 182, 212, 0.5);
            --radius-sm: 4px;
            --radius-md: 12px;
            --radius-lg: 24px;
            --radius-pill: 9999px;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
            --grad-brand: linear-gradient(135deg, #06B6D4 0%, #3B82F6 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;
            color: var(--color-text-primary);
            background-color: var(--color-bg-main);
            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 { color: var(--color-text-link); text-decoration: none; transition: color 0.2s; }
        a:hover { color: var(--color-text-link-hover); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-block: 16px;
            background: rgba(15, 23, 42, 0.8);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--color-border-default);
        }
        .header-brand { display: flex; align-items: center; gap: 8px; }
        .header-brand strong { font-size: 16px; font-weight: 400; }
        .header-actions { display: flex; gap: 12px; }

        .btn-primary, .btn-cta {
            background: var(--color-btn-bg);
            color: var(--color-btn-text);
            font-weight: 600;
            padding: 12px 24px;
            border-radius: var(--radius-pill);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            transition: background 0.3s;
            border: none;
            cursor: pointer;
            text-align: center;
        }
        .btn-primary:hover, .btn-cta:hover { background: var(--color-btn-hover-bg); }
        .btn-outline {
            border: 1px solid var(--color-accent);
            color: var(--color-text-primary);
            padding: 12px 24px;
            border-radius: var(--radius-pill);
            min-height: 44px;
            display: inline-flex;
            align-items: center;
            transition: all 0.3s;
        }
        .btn-outline:hover { background: var(--color-accent); color: var(--color-bg-main); }

        main { max-width: 1200px; margin: 0 auto; }
        section { 
            padding-block: 40px 0; 
            content-visibility: auto; 
            contain-intrinsic-size: 1px 500px; 
        }

        h1 { font-size: clamp(1.6rem, 6.5vw, 2.4rem); line-height: 1.2; margin-bottom: 20px; color: var(--color-text-primary); }
        h2 { font-size: clamp(1.3rem, 5.2vw, 1.8rem); line-height: 1.25; margin-top: 2rem; margin-bottom: 1.5rem; border-left: 4px solid var(--color-accent); padding-left: 15px; }
        h3 { font-size: clamp(1.05rem, 4.2vw, 1.25rem); line-height: 1.3; margin-bottom: 10px; color: var(--color-text-primary); }

        .hero-section { text-align: center; padding-block: 40px; }
        .hero-intro { font-size: 1.1rem; color: var(--color-text-secondary); margin-bottom: 30px; max-width: 800px; margin-inline: auto; }
        .hero-tags { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
        .tag-pill { background: var(--color-bg-elevated); border: 1px solid var(--color-border-brand); padding: 6px 16px; border-radius: var(--radius-pill); font-size: 0.85rem; color: var(--color-text-secondary); }

        .banner-link { display: block; width: 100%; aspect-ratio: 2/1; overflow: hidden; border-radius: var(--radius-md); margin-block: 20px 0; }
        .banner-link img { width: 100%; height: 100%; object-fit: cover; }

        .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; margin-block: 20px 0; }
        .cat-tile { 
            background: var(--color-bg-surface); 
            border: 1px solid var(--color-border-default); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            text-align: center; 
            transition: transform 0.2s, border-color 0.2s;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }
        .cat-tile:hover { transform: translateY(-5px); border-color: var(--color-accent); }
        .cat-tile i { font-size: 2rem; color: var(--color-accent); }
        .cat-tile span { display: block; font-weight: 600; margin-bottom: 5px; }
        .cat-tile p { font-size: 0.85rem; color: var(--color-text-muted); margin: 0; }

        .game-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }
        .game-card { 
            background: var(--color-bg-surface); 
            border-radius: var(--radius-md); 
            overflow: hidden; 
            border: 1px solid var(--color-border-default); 
            transition: border-color 0.3s;
        }
        .game-card:hover { border-color: var(--color-accent); }
        .game-card img { aspect-ratio: 1/1; object-fit: cover; width: 100%; }
        .game-card h3 { padding: 12px; margin: 0; font-size: 1rem; text-align: center; }

        .facts-container { background: var(--color-bg-surface); border-radius: var(--radius-lg); padding: 24px; border: 1px solid var(--color-border-default); }
        .freshness-notice { font-style: italic; color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: 20px; display: block; }
        .facts-table { width: 100%; border-collapse: collapse; }
        .facts-table tr { border-bottom: 1px solid var(--color-border-default); }
        .facts-table td { padding: 12px 0; }
        .facts-label { font-weight: 600; color: var(--color-text-secondary); width: 40%; }
        .facts-value { color: var(--color-text-primary); }
        .terms-link-wrap { margin-top: 15px; font-size: 0.85rem; text-align: center; }

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

        .promo-card { 
            background: var(--color-bg-surface); 
            border: 1px solid var(--color-border-brand); 
            border-radius: var(--radius-lg); 
            padding: 24px; 
            margin-bottom: 20px; 
            display: flex; 
            flex-direction: column; 
            gap: 15px;
        }

        .usp-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
        .usp-item { 
            background: var(--color-bg-surface); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            display: flex; 
            gap: 15px; 
            align-items: flex-start;
            border: 1px solid var(--color-border-default);
        }
        .usp-item i { font-size: 1.5rem; color: var(--color-accent); margin-top: 4px; }

        .payment-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }
        .pay-card { 
            background: var(--color-bg-surface); 
            border: 1px solid var(--color-border-default); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }
        .pay-card i { font-size: 2rem; color: var(--color-accent); }

        .guide-step { 
            display: flex; 
            gap: 20px; 
            padding-block: 20px; 
            border-bottom: 1px solid var(--color-border-default);
        }
        .step-num { 
            width: 40px; height: 40px; background: var(--color-accent); color: var(--color-bg-main); 
            border-radius: 50%; display: flex; align-items: center; justify-content: center; 
            font-weight: bold; flex-shrink: 0; 
        }
        .step-content h3 { margin: 0 0 10px 0; }
        .step-content a { color: inherit; text-decoration: none; }

        .announcement-item { 
            background: var(--color-bg-surface); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            margin-bottom: 15px; 
            border-left: 4px solid var(--color-accent);
            display: flex;
            gap: 15px;
        }
        .ann-date { font-size: 0.8rem; color: var(--color-text-muted); display: block; margin-top: 10px; }

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

        .trust-card { background: var(--color-bg-elevated); padding: 24px; border-radius: var(--radius-lg); margin-top: 30px; border: 1px solid var(--color-border-brand); }

        footer { 
            background: var(--color-bg-surface); 
            padding: 40px 0; 
            margin-top: 60px; 
            border-top: 1px solid var(--color-border-default); 
            text-align: center; 
        }
        .footer-sitemap { 
            display: grid; 
            grid-template-columns: repeat(3, 1fr); 
            gap: 10px; 
            max-width: 800px; 
            margin: 0 auto 30px; 
            text-align: center; 
        }
        .footer-contact { margin-bottom: 20px; color: var(--color-text-secondary); }
        .footer-legal { font-size: 0.8rem; color: var(--color-text-muted); max-width: 700px; margin: 0 auto; }

        .navigator { 
            position: fixed; 
            inset-inline: 0; 
            bottom: 0; 
            background: rgba(15, 23, 42, 0.95); 
            backdrop-filter: blur(10px); 
            display: flex; 
            justify-content: space-around; 
            padding-block: 12px; 
            padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px)); 
            border-top: 1px solid var(--color-border-default); 
            z-index: 2000; 
        }
        .nav-item { 
            display: flex; 
            flex-direction: column; 
            align-items: center; 
            gap: 4px; 
            color: var(--color-text-secondary); 
            font-size: 0.75rem; 
            text-decoration: none; 
        }
        .nav-item i { font-size: 1.2rem; }

        .utility-link { font-weight: 600; text-decoration: underline; }

        @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); }
            .usp-grid { grid-template-columns: repeat(3, 1fr); }
            .navigator { position: static; display: none; }
            footer { padding-bottom: 24px; }
        }

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