:root {
            --brand-primary: #0066FF;
            --brand-primary-hover: #3385FF;
            --brand-secondary: #C0C0C8;
            --brand-accent: #00F5FF;
            --bg-main: #050B1A;
            --bg-surface: #0D162D;
            --bg-elevated: #162241;
            --text-primary: #E6EEFF;
            --text-secondary: #B0B9D1;
            --text-muted: #7A86A3;
            --border-default: #1E2D52;
            --border-brand: #00F5FF;
            --radius-md: 12px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --glass-bg: rgba(22, 34, 65, 0.7);
        }

        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;
            background-color: var(--bg-main);
            color: var(--text-primary);
            padding-inline: 14px;
            padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
            overflow-x: hidden;
        }

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

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            max-width: 1200px;
            margin: 0 auto;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            color: var(--text-primary);
        }

        .header-logo-name {
            font-size: 16px;
            font-weight: 400;
        }

        .header-actions {
            display: flex;
            gap: 12px;
        }

        .btn-nav {
            text-decoration: none;
            padding: 8px 16px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .btn-login {
            color: var(--text-primary);
            background: var(--bg-elevated);
            border: 1px solid var(--border-default);
        }

        .btn-register {
            background: linear-gradient(135deg, #0066FF 0%, #00F5FF 100%);
            color: #050B1A;
        }

        main {
            max-width: 1200px;
            margin: 0 auto;
        }

        .hero-section {
            padding: 40px 0;
            text-align: center;
        }

        .hero-title {
            font-size: clamp(1.6rem, 6.5vw, 2.4rem);
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .hero-intro {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 30px;
            max-width: 800px;
            margin-inline: auto;
        }

        .btn-hero-cta {
            display: block;
            width: 100%;
            background: linear-gradient(to right, #0066FF, #00BFFF);
            color: #FFFFFF;
            text-decoration: none;
            padding: 18px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 24px;
            transition: transform 0.2s ease;
        }

        .btn-hero-cta:hover { transform: scale(1.02); }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .hero-tag {
            background: var(--bg-surface);
            border: 1px solid var(--border-brand);
            color: var(--brand-accent);
            padding: 4px 12px;
            border-radius: var(--radius-md);
            font-size: 13px;
        }

        .banner-wrapper {
            margin: 20px 0;
            border-radius: var(--radius-lg);
            overflow: hidden;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin: 30px 0;
        }

        .cat-tile {
            background: var(--glass-bg);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-decoration: none;
            color: var(--text-primary);
            text-align: center;
            transition: border-color 0.3s ease;
        }

        .cat-tile:hover { border-color: var(--brand-accent); }

        .cat-icon {
            font-size: 2rem;
            margin-bottom: 10px;
            color: var(--brand-accent);
        }

        .cat-label {
            display: block;
            font-weight: 600;
            margin-bottom: 5px;
        }

        .cat-desc {
            font-size: 13px;
            color: var(--text-muted);
            display: block;
        }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin: 20px 0;
        }

        .game-card {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            text-decoration: none;
            color: var(--text-primary);
            overflow: hidden;
            border: 1px solid var(--border-default);
        }

        .game-img {
            width: 100%;
            aspect-ratio: 1 / 1;
            object-fit: cover;
        }

        .game-info { padding: 12px; text-align: center; }
        .game-title { font-size: 1rem; margin: 0; }

        .facts-container {
            background: var(--bg-surface);
            padding: 24px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-default);
            margin: 30px 0;
        }

        .facts-notice {
            font-style: italic;
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 20px;
        }

        .facts-table {
            width: 100%;
            border-collapse: collapse;
        }

        .facts-row { border-bottom: 1px solid var(--border-default); }
        .facts-label {
            padding: 12px 0;
            color: var(--text-secondary);
            font-weight: 500;
            width: 40%;
        }
        .facts-value {
            padding: 12px 0;
            text-align: right;
            color: var(--text-primary);
        }

        .terms-link-wrap {
            margin-top: 15px;
            text-align: center;
            font-size: 13px;
        }

        .terms-link { color: var(--text-muted); text-decoration: underline; }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 10px;
            padding: 15px 0;
            scrollbar-width: none;
        }

        .toc-nav::-webkit-scrollbar { display: none; }

        .toc-item {
            background: var(--bg-elevated);
            color: var(--text-primary);
            text-decoration: none;
            padding: 8px 16px;
            border-radius: var(--radius-md);
            white-space: nowrap;
            font-size: 14px;
            border: 1px solid var(--border-default);
        }

        .promo-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin: 20px 0;
        }

        .promo-card {
            background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-elevated) 100%);
            padding: 24px;
            border-radius: var(--radius-lg);
            border-left: 4px solid var(--brand-accent);
        }

        .promo-title { font-size: 1.4rem; margin-bottom: 12px; }
        .promo-body { color: var(--text-secondary); margin-bottom: 20px; }

        .btn-promo {
            display: inline-block;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            background: var(--brand-primary);
            color: white;
        }

        .usp-grid {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin: 30px 0;
        }

        .usp-item {
            display: flex;
            align-items: center;
            gap: 15px;
            background: var(--bg-surface);
            padding: 15px;
            border-radius: var(--radius-md);
        }

        .usp-icon { color: var(--brand-accent); font-size: 1.5rem; }
        .usp-text strong { display: block; color: var(--text-primary); }
        .usp-text span { font-size: 14px; color: var(--text-muted); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin: 20px 0;
        }

        .pay-card {
            background: var(--bg-surface);
            padding: 15px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
            text-align: center;
        }

        .pay-icon { font-size: 1.8rem; margin-bottom: 8px; color: var(--brand-primary); }
        .pay-name { display: block; font-weight: 600; margin-bottom: 5px; }
        .pay-desc { font-size: 12px; color: var(--text-muted); }

        .guide-steps {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin: 20px 0;
        }

        .step-item {
            display: flex;
            gap: 15px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
        }

        .step-num {
            width: 32px;
            height: 32px;
            background: var(--brand-accent);
            color: #050B1A;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
        }

        .step-content h3 { margin: 0 0 10px 0; color: var(--text-primary); }
        .step-content a { color: inherit; text-decoration: none; }

        .download-panel {
            background: linear-gradient(135deg, #0D162D, #162241);
            padding: 30px;
            border-radius: var(--radius-lg);
            text-align: center;
            margin: 30px 0;
            border: 1px solid var(--border-default);
        }

        .btn-download {
            background: var(--brand-accent);
            color: #050B1A;
            padding: 16px 32px;
            border-radius: var(--radius-md);
            text-decoration: none;
            font-weight: 700;
            display: inline-block;
            margin-top: 20px;
        }

        .player-guides {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin: 20px 0;
        }

        .guide-card {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
        }

        .guide-meta {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 10px;
            display: block;
        }

        .announcement-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin: 20px 0;
        }

        .announcement-item {
            display: flex;
            gap: 15px;
            padding: 15px;
            background: var(--bg-surface);
            border-radius: var(--radius-md);
        }

        .ann-date {
            font-size: 12px;
            color: var(--text-muted);
            display: block;
            margin-top: 5px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin: 20px 0;
        }

        details {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
        }

        summary {
            padding: 15px;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        summary h3 { margin: 0; font-size: 1.1rem; pointer-events: none; }

        .faq-answer {
            padding: 0 15px 15px 15px;
            color: var(--text-secondary);
            border-top: 1px solid var(--border-default);
            padding-top: 15px;
        }

        .trust-card {
            background: var(--bg-surface);
            padding: 25px;
            border-radius: var(--radius-lg);
            margin: 30px 0;
            border: 1px solid var(--border-default);
        }

        .team-card {
            background: var(--bg-elevated);
            padding: 20px;
            border-radius: var(--radius-md);
            margin-top: 20px;
        }

        .security-panel {
            background: var(--bg-surface);
            padding: 25px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-default);
            margin: 30px 0;
        }

        .security-links {
            display: flex;
            gap: 15px;
            margin: 20px 0;
        }

        .sec-link {
            color: var(--brand-accent);
            text-decoration: none;
            font-size: 14px;
            border: 1px solid var(--brand-accent);
            padding: 5px 10px;
            border-radius: 4px;
        }

        footer {
            margin-top: 50px;
            padding: 40px 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;
        }

        .footer-link {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 14px;
        }

        .footer-contact { margin-bottom: 20px; }
        .footer-contact a { color: var(--brand-accent); text-decoration: none; }

        .footer-legal {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            background: var(--bg-surface);
            backdrop-filter: blur(15px);
            border-top: 1px solid var(--border-default);
            display: flex;
            justify-content: space-around;
            padding: 10px 0 calc(10px + env(safe-area-inset-bottom, 0px));
            z-index: 1000;
        }

        .nav-item {
            text-decoration: none;
            color: var(--text-secondary);
            display: flex;
            flex-direction: column;
            align-items: center;
            font-size: 11px;
            gap: 4px;
        }

        .nav-item i { font-size: 1.2rem; }

        .util-link {
            display: block;
            text-align: center;
            color: var(--brand-accent);
            text-decoration: none;
            margin-top: 15px;
            font-size: 14px;
        }

        section {
            content-visibility: auto;
            contain-intrinsic-size: 1px 500px;
            margin-bottom: 40px;
        }

        @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(3, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .navigator { display: none; }
            .hero-title { font-size: 3rem; }
        }

        @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(4, 1fr); }
        }