:root {
            --brand-primary: #0A192F;
            --brand-hover: #112240;
            --brand-secondary: #C0C0C0;
            --brand-accent: #00F5FF;
            --bg-main: #050C1A;
            --bg-surface: #0D1B33;
            --bg-elevated: #162645;
            --text-primary: #E6F1FF;
            --text-secondary: #A8B2D1;
            --text-muted: #64748B;
            --btn-bg: #00F5FF;
            --btn-text: #050C1A;
            --btn-hover-bg: #70F9FF;
            --border-default: #1E293B;
            --border-brand: #00F5FF;
            --radius-md: 4px;
            --radius-lg: 8px;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
            --glow: 0 0 15px rgba(0, 245, 255, 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;
            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);
        }
        
        h1, h2, h3 { font-family: "Oswald", sans-serif; letter-spacing: -0.02em; line-height: 1.2; margin: 0; }
        h1 { font-size: clamp(1.6rem, 6.5vw, 2.4rem); margin-bottom: 1rem; color: var(--brand-accent); }
        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-bottom: 0.75rem; color: var(--text-primary); }

        a { color: var(--brand-accent); text-decoration: none; transition: color 0.2s; }
        a:hover { color: var(--btn-hover-bg); }

        img { max-width: 100%; height: auto; display: block; }

        .btn-main {
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 12px 24px;
            background: var(--btn-bg);
            color: var(--btn-text);
            font-weight: 700;
            border-radius: var(--radius-md);
            text-align: center;
            transition: transform 0.2s, background 0.2s;
            cursor: pointer;
            border: none;
        }
        .btn-main:hover { background: var(--btn-hover-bg); transform: translateY(-2px); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 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-auth { display: flex; gap: 10px; }
        .btn-auth { padding: 8px 16px; font-size: 0.875rem; border-radius: var(--radius-md); font-weight: 600; }
        .btn-login { background: transparent; border: 1px solid var(--brand-accent); color: var(--brand-accent); }
        .btn-register { background: var(--brand-accent); color: var(--bg-main); }

        .hero-section { text-align: center; padding: 2rem 0; }
        .hero-intro { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 1.5rem; max-width: 800px; margin-inline: auto; }
        .hero-cta { width: 100%; margin-bottom: 1.5rem; }
        .hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
        .hero-tag { background: var(--bg-elevated); color: var(--brand-accent); padding: 4px 12px; border-radius: var(--radius-pill); font-size: 0.75rem; border: 1px solid var(--border-default); }

        .banner-link 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; }
        .category-tile {
            background: var(--bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border-default);
            transition: border-color 0.3s;
        }
        .category-tile:hover { border-color: var(--brand-accent); }
        .category-tile i { font-size: 2rem; color: var(--brand-accent); margin-bottom: 10px; }
        .category-tile strong { display: block; font-size: 1.1rem; margin-bottom: 5px; }
        .category-tile span { font-size: 0.85rem; color: var(--text-secondary); }

        .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: transform 0.2s;
        }
        .game-card:hover { transform: scale(1.03); }
        .game-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
        .game-card h3 { padding: 12px; font-size: 1rem; text-align: center; margin: 0; }

        .fact-table-wrapper { margin: 1.5rem 0; background: var(--bg-surface); border-radius: var(--radius-lg); overflow: hidden; }
        .fact-table { width: 100%; border-collapse: collapse; }
        .fact-table tr { border-bottom: 1px solid var(--border-default); }
        .fact-table td { padding: 12px 15px; vertical-align: middle; }
        .fact-label { font-weight: 600; color: var(--text-secondary); width: 40%; }
        .fact-value { color: var(--text-primary); }
        .freshness-notice { font-style: italic; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1rem; }
        .terms-footer-link { display: block; text-align: center; margin-top: 1rem; font-size: 0.85rem; color: var(--text-secondary); }

        .toc-nav { 
            display: flex; 
            overflow-x: auto; 
            gap: 10px; 
            padding: 1rem 0; 
            scrollbar-width: none; 
            border-bottom: 1px solid var(--border-default);
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link { 
            white-space: nowrap; 
            background: var(--bg-elevated); 
            padding: 6px 14px; 
            border-radius: var(--radius-pill); 
            font-size: 0.85rem; 
            color: var(--text-primary);
        }

        .promo-grid { display: grid; gap: 15px; }
        .promo-card { 
            background: var(--bg-surface); 
            padding: 20px; 
            border-radius: var(--radius-lg); 
            border-left: 5px solid var(--brand-accent);
            display: flex;
            flex-direction: column;
        }
        .promo-card h3 { margin-bottom: 10px; }
        .promo-body { color: var(--text-secondary); margin-bottom: 15px; }

        .usp-bar { display: grid; gap: 15px; margin: 2rem 0; }
        .usp-tile { 
            background: var(--bg-elevated); 
            padding: 15px; 
            border-radius: var(--radius-lg); 
            display: flex; 
            gap: 15px; 
            align-items: flex-start;
        }
        .usp-tile i { color: var(--brand-accent); font-size: 1.5rem; margin-top: 4px; }
        .usp-content strong { display: block; margin-bottom: 4px; }
        .usp-content p { margin: 0; font-size: 0.9rem; color: var(--text-secondary); }

        .payment-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
        .payment-card { 
            background: var(--bg-surface); 
            padding: 15px; 
            border-radius: var(--radius-lg); 
            text-align: center; 
            border: 1px solid var(--border-default);
        }
        .payment-card i { font-size: 1.8rem; color: var(--brand-accent); margin-bottom: 10px; }
        .payment-card strong { display: block; margin-bottom: 8px; }
        .payment-card p { font-size: 0.8rem; color: var(--text-secondary); margin: 0; }

        .guide-list { display: grid; gap: 15px; }
        .guide-step { 
            display: flex; 
            gap: 15px; 
            background: var(--bg-surface); 
            padding: 20px; 
            border-radius: var(--radius-lg); 
        }
        .step-num { 
            min-width: 32px; height: 32px; 
            background: var(--brand-accent); 
            color: var(--bg-main); 
            border-radius: 50%; 
            display: flex; 
            align-items: center; 
            justify-content: center; 
            font-weight: 700; 
        }
        .guide-step h3 { margin: 0 0 8px 0; }
        .guide-step h3 a { color: inherit; }

        .announcement-grid { display: grid; gap: 15px; }
        .announcement-item { 
            background: var(--bg-surface); 
            padding: 15px; 
            border-radius: var(--radius-lg); 
            border: 1px solid var(--border-default);
        }
        .anno-header { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
        .anno-header i { color: var(--brand-accent); }
        .anno-date { font-size: 0.75rem; color: var(--text-muted); display: block; margin-top: 10px; }

        .faq-section { display: grid; gap: 10px; }
        details { background: var(--bg-surface); border-radius: var(--radius-lg); border: 1px solid var(--border-default); }
        summary { padding: 15px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
        summary::-webkit-details-marker { display: none; }
        summary h3 { margin: 0; font-size: 1.1rem; }

        .trust-card { background: var(--bg-elevated); padding: 20px; border-radius: var(--radius-lg); margin-top: 1.5rem; border: 1px dashed var(--brand-accent); }
        .trust-card h3 { color: var(--brand-accent); }

        footer { 
            background: var(--bg-surface); 
            padding: 2rem 0; 
            margin-top: 3rem; 
            border-top: 2px solid var(--brand-accent);
            text-align: center;
        }
        .footer-sitemap { 
            display: grid; 
            grid-template-columns: repeat(3, 1fr); 
            gap: 10px; 
            margin-bottom: 2rem;
            text-align: left;
        }
        .footer-contact { margin-bottom: 1.5rem; font-size: 0.9rem; }
        .footer-legal { font-size: 0.8rem; color: var(--text-muted); }

        .navigator { 
            position: fixed; 
            inset-inline: 0; 
            bottom: 0; 
            background: var(--bg-surface); 
            display: flex; 
            justify-content: space-around; 
            align-items: center; 
            padding: 10px 0 env(safe-area-inset-bottom, 10px) 0; 
            border-top: 1px solid var(--border-default);
            z-index: 100;
        }
        .nav-item { text-align: center; color: var(--text-secondary); font-size: 0.7rem; display: flex; flex-direction: column; align-items: center; 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); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .guide-list { grid-template-columns: repeat(2, 1fr); }
            .navigator { position: static; display: none; }
        }

        @media (min-width: 1200px) {
            body { padding-inline: 32px; max-width: 1200px; margin-inline: auto; }
            .category-grid { grid-template-columns: repeat(4, 1fr); }
        }
        .util-link { font-weight: 600; text-decoration: underline; }