:root {
            --color-primary: #0A1C3D;
            --color-primary-hover: #142D61;
            --color-secondary: #C0C0C5;
            --color-secondary-hover: #E0E0E5;
            --color-accent: #00F5FF;
            --color-bg-main: #050D1F;
            --color-bg-surface: #0B1631;
            --color-bg-elevated: #122042;
            --color-text-primary: #E6F0FF;
            --color-text-secondary: #A0B0C5;
            --color-text-muted: #6B7C94;
            --color-btn-bg: #00F5FF;
            --color-btn-text: #050D1F;
            --color-btn-hover-bg: #70F9FF;
            --color-border-default: #1B2C54;
            --color-border-brand: #00F5FF;
            --font-headings: 'Barlow Condensed', sans-serif;
            --font-body: 'Be Vietnam Pro', sans-serif;
            --radius-md: 4px;
            --radius-lg: 8px;
            --radius-pill: 9999px;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.5);
            --glow-accent: 0 0 15px rgba(0, 245, 255, 0.4);
        }

        html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: var(--font-body);
            font-size: clamp(15px, 3.9vw, 16px);
            line-height: 1.65;
            padding-inline: 14px;
            padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
            background-color: var(--color-bg-main);
            color: var(--color-text-primary);
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--color-accent); text-decoration: none; transition: color 0.2s ease; }
        a:hover { color: var(--color-btn-hover-bg); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-block: 12px;
            background-color: var(--color-bg-surface);
            border-bottom: 1px solid var(--color-border-default);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-brand { display: flex; align-items: center; gap: 8px; }
        .header-brand strong { font-size: 16px; font-weight: 400; color: var(--color-text-primary); }
        .header-actions { display: flex; gap: 10px; }
        .btn-nav {
            padding: 8px 16px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.875rem;
            transition: all 0.2s ease;
        }
        .btn-login { background: transparent; border: 1px solid var(--color-accent); color: var(--color-accent); }
        .btn-register { background: var(--color-btn-bg); color: var(--color-btn-text); }
        .btn-register:hover { background: var(--color-btn-hover-bg); }

        main { width: 100%; }
        .section-wrapper { padding-block: 40px 0; content-visibility: auto; contain-intrinsic-size: 1px 800px; }
        h1 { font-family: var(--font-headings); font-size: clamp(1.6rem, 6.5vw, 2.4rem); line-height: 1.2; margin: 0 0 16px; color: var(--color-text-primary); }
        h2 { font-family: var(--font-headings); font-size: clamp(1.3rem, 5.2vw, 1.8rem); line-height: 1.25; margin: 2rem 0 1.2rem; color: var(--color-text-primary); }
        h3 { font-family: var(--font-headings); font-size: clamp(1.05rem, 4.2vw, 1.25rem); line-height: 1.3; margin: 0 0 8px; color: var(--color-text-primary); }

        .hero-panel { padding-block: 32px; text-align: center; }
        .hero-intro { margin-bottom: 24px; color: var(--color-text-secondary); max-width: 800px; margin-inline: auto; }
        .cta-main {
            display: block;
            width: 100%;
            padding: 16px;
            background: linear-gradient(to bottom, #00F5FF 0%, #00D1DD 100%);
            color: var(--color-btn-text);
            text-align: center;
            font-weight: 700;
            font-size: 1.125rem;
            border-radius: var(--radius-lg);
            box-shadow: var(--glow-accent);
            margin-bottom: 20px;
        }
        .hero-tags { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; }
        .tag-pill { background: var(--color-bg-elevated); color: var(--color-text-secondary); padding: 4px 12px; border-radius: var(--radius-pill); font-size: 0.75rem; border: 1px solid var(--color-border-default); }

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

        .cat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-block: 24px; }
        .cat-tile {
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--color-border-default);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }
        .cat-tile i { font-size: 2rem; color: var(--color-accent); }
        .cat-tile strong { display: block; color: var(--color-text-primary); font-size: 1rem; }
        .cat-tile span { font-size: 0.8rem; color: var(--color-text-muted); line-height: 1.4; }

        .game-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
        .game-card { background: var(--color-bg-surface); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--color-border-default); transition: transform 0.2s ease; }
        .game-card:hover { transform: translateY(-4px); }
        .game-card img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
        .game-card h3 { padding: 12px; margin: 0; font-size: 1rem; text-align: center; }

        .fact-table { width: 100%; border-collapse: collapse; margin-block: 16px; background: var(--color-bg-surface); border-radius: var(--radius-lg); overflow: hidden; }
        .fact-table td { padding: 12px; border-bottom: 1px solid var(--color-border-default); font-size: 0.9rem; }
        .fact-label { color: var(--color-text-secondary); width: 40%; }
        .fact-value { color: var(--color-text-primary); font-weight: 500; }
        .freshness-notice { font-style: italic; color: var(--color-text-muted); font-size: 0.8rem; margin-bottom: 12px; }
        .terms-link { display: block; margin-top: 12px; font-size: 0.8rem; color: var(--color-text-muted); text-align: center; }

        .toc-nav { display: flex; overflow-x: auto; gap: 12px; padding-block: 16px; scrollbar-width: none; }
        .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: 0.875rem; border: 1px solid var(--color-border-default); }

        .promo-card { background: var(--color-bg-surface); border: 1px solid var(--color-border-default); padding: 24px; border-radius: var(--radius-lg); margin-bottom: 16px; }
        .promo-card h3 { margin-bottom: 12px; }
        .promo-card p { color: var(--color-text-secondary); margin-bottom: 20px; font-size: 0.95rem; }
        .btn-promo { display: inline-block; padding: 10px 20px; background: var(--color-accent); color: var(--color-btn-text); border-radius: var(--radius-md); font-weight: 600; }

        .usp-bar { display: grid; gap: 16px; margin-block: 24px; }
        .usp-tile { display: flex; gap: 16px; align-items: flex-start; background: var(--color-bg-surface); padding: 20px; border-radius: var(--radius-lg); border: 1px solid var(--color-border-default); }
        .usp-tile i { font-size: 1.5rem; color: var(--color-accent); margin-top: 4px; }
        .usp-content strong { display: block; margin-bottom: 4px; color: var(--color-text-primary); }
        .usp-content p { margin: 0; font-size: 0.9rem; color: var(--color-text-secondary); }

        .payment-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
        .pay-card { background: var(--color-bg-surface); padding: 16px; border-radius: var(--radius-lg); border: 1px solid var(--color-border-default); text-align: center; }
        .pay-card i { font-size: 1.5rem; color: var(--color-accent); margin-bottom: 12px; }
        .pay-card strong { display: block; margin-bottom: 8px; font-size: 0.9rem; }
        .pay-card p { font-size: 0.8rem; color: var(--color-text-muted); margin: 0; line-height: 1.4; }

        .step-list { display: grid; gap: 20px; }
        .step-item { display: flex; gap: 16px; align-items: flex-start; }
        .step-num { width: 32px; height: 32px; background: var(--color-accent); color: var(--color-btn-text); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }
        .step-content h3 { margin: 0 0 8px; }
        .step-content a { color: inherit; text-decoration: none; }
        .step-content p { margin: 0; color: var(--color-text-secondary); font-size: 0.9rem; }

        .download-panel { background: var(--color-bg-surface); padding: 24px; border-radius: var(--radius-lg); text-align: center; border: 1px solid var(--color-border-default); }
        .btn-dl { display: block; width: 100%; padding: 16px; background: var(--color-accent); color: var(--color-btn-text); border-radius: var(--radius-lg); font-weight: 700; margin-block: 16px; }

        .guide-item { border-bottom: 1px solid var(--color-border-default); padding-block: 20px; }
        .guide-item:last-child { border-bottom: none; }
        .guide-meta { font-size: 0.75rem; color: var(--color-text-muted); margin-bottom: 12px; display: block; }

        .announcement-list { display: grid; gap: 16px; }
        .announcement-card { background: var(--color-bg-surface); padding: 16px; border-radius: var(--radius-lg); border: 1px solid var(--color-border-default); display: flex; gap: 16px; }
        .announcement-card i { color: var(--color-accent); font-size: 1.2rem; margin-top: 4px; }
        .announcement-body h3 { margin: 0 0 8px; font-size: 1.1rem; }
        .announcement-body p { margin: 0 0 8px; font-size: 0.9rem; color: var(--color-text-secondary); }
        .announcement-date { font-size: 0.75rem; color: var(--color-text-muted); }

        .faq-item { margin-bottom: 12px; }
        .faq-summary { background: var(--color-bg-surface); border: 1px solid var(--color-border-default); border-radius: var(--radius-lg); cursor: pointer; list-style: none; }
        .faq-summary h3 { margin: 0; padding: 16px; font-size: 1rem; display: flex; justify-content: space-between; align-items: center; }
        .faq-summary h3::after { content: '\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; font-size: 0.8rem; }
        .faq-answer { padding: 16px; color: var(--color-text-secondary); font-size: 0.9rem; border-top: 1px solid var(--color-border-default); }

        .about-section { background: var(--color-bg-surface); padding: 24px; border-radius: var(--radius-lg); border: 1px solid var(--color-border-default); }
        .team-card { margin-top: 24px; padding: 20px; background: var(--color-bg-elevated); border-radius: var(--radius-lg); border-left: 4px solid var(--color-accent); }
        .team-card h3 { margin-top: 0; }
        .team-card p { margin: 0 0 8px; font-size: 0.9rem; color: var(--color-text-secondary); }

        .security-box { background: var(--color-bg-surface); padding: 24px; border-radius: var(--radius-lg); border: 1px solid var(--color-border-default); }
        .security-list { list-style: none; padding: 0; margin: 0 0 20px; }
        .security-list li { padding-block: 8px; font-size: 0.9rem; color: var(--color-text-secondary); display: flex; gap: 10px; align-items: center; }
        .security-list li i { color: var(--color-accent); font-size: 0.8rem; }

        footer { background: var(--color-bg-surface); padding: 40px 0 20px; border-top: 1px solid var(--color-border-default); text-align: center; }
        .footer-sitemap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 32px; text-align: left; }
        .footer-sitemap a { font-size: 0.85rem; color: var(--color-text-secondary); }
        .footer-contact { margin-bottom: 24px; font-size: 0.9rem; }
        .footer-legal { font-size: 0.75rem; color: var(--color-text-muted); line-height: 1.5; }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            height: 72px;
            background: var(--color-bg-surface);
            display: flex;
            justify-content: space-around;
            align-items: center;
            border-top: 1px solid var(--color-border-default);
            padding-bottom: env(safe-area-inset-bottom);
            z-index: 1000;
        }
        .nav-item { display: flex; flex-direction: column; align-items: center; gap: 4px; color: var(--color-text-secondary); font-size: 0.7rem; text-decoration: none; }
        .nav-item i { font-size: 1.2rem; }
        .nav-item:hover { color: var(--color-accent); }

        .util-link { display: inline-block; margin-top: 16px; color: var(--color-accent); font-weight: 500; font-size: 0.9rem; }

        @media (min-width: 768px) {
            body { padding-inline: 24px; padding-bottom: 24px; }
            .cat-grid { grid-template-columns: repeat(3, 1fr); }
            .game-grid { grid-template-columns: repeat(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .step-list { grid-template-columns: repeat(2, 1fr); }
            .navigator { position: static; display: none; }
            .hero-panel { padding-block: 64px; }
        }

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