:root {
            --color-primary: #0F2C59;
            --color-primary-hover: #1A428A;
            --color-secondary: #C0C0C8;
            --color-secondary-hover: #E2E2EA;
            --color-accent: #00F5FF;
            --color-bg-main: #050B18;
            --color-bg-surface: #0D172B;
            --color-bg-elevated: #16233E;
            --color-text-primary: #E6F0FF;
            --color-text-secondary: #A0B1C5;
            --color-text-muted: #6B7C93;
            --color-btn-bg: #00F5FF;
            --color-btn-text: #050B18;
            --color-btn-hover-bg: #70F9FF;
            --color-border-default: #1C2D4F;
            --color-border-brand: #00F5FF;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-pill: 9999px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --grad-brand: linear-gradient(135deg, #0F2C59 0%, #00F5FF 100%);
            --grad-hero: radial-gradient(circle at center, #16233E 0%, #050B18 100%);
            --grad-button: linear-gradient(180deg, #00F5FF 0%, #00C4D1 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(--color-bg-main);
            color: var(--color-text-primary);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--color-accent); text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: var(--color-btn-hover-bg); }

        .btn, .cta {
            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: transform 0.2s ease, opacity 0.2s ease;
            border: none;
            text-align: center;
        }
        .btn-primary {
            background: var(--grad-button);
            color: var(--color-btn-text);
            box-shadow: 0 0 15px rgba(0, 245, 255, 0.3);
        }
        .btn-primary:hover { transform: translateY(-2px); opacity: 0.9; }
        .btn-secondary {
            background: var(--color-bg-elevated);
            color: var(--color-text-primary);
            border: 1px solid var(--color-border-default);
        }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            max-width: 1200px;
            margin: 0 auto;
        }
        .header-logo-link { display: flex; align-items: center; gap: 8px; }
        .header-logo-link strong { font-size: 16px; font-weight: 400; color: var(--color-text-primary); }
        .header-actions { display: flex; gap: 12px; }

        main { width: 100%; }
        section {
            padding: 40px 0;
            content-visibility: auto;
            contain-intrinsic-size: 1px 500px;
        }

        h1 { font-size: clamp(1.8rem, 6.5vw, 3rem); line-height: 1.2; margin-bottom: 1.5rem; color: var(--color-text-primary); text-align: center; }
        h2 { font-size: clamp(1.4rem, 5.2vw, 2.25rem); line-height: 1.25; margin-bottom: 1.5rem; color: var(--color-text-primary); }
        h3 { font-size: clamp(1.1rem, 4.2vw, 1.5rem); line-height: 1.3; margin-bottom: 1rem; color: var(--color-text-primary); }

        .hero-section {
            background: var(--grad-hero);
            padding: 60px 20px;
            text-align: center;
            border-radius: var(--radius-lg);
            margin-bottom: 30px;
        }
        .hero-intro { max-width: 800px; margin: 0 auto 30px; color: var(--color-text-secondary); }
        .hero-cta { display: block; width: 100%; max-width: 400px; margin: 0 auto 24px; font-size: 1.2rem; }
        .hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
        .hero-tag {
            background: rgba(0, 245, 255, 0.1);
            border: 1px solid var(--color-border-brand);
            color: var(--color-accent);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
        }

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

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 24px;
        }
        .category-tile {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            transition: border-color 0.3s ease;
        }
        .category-tile:hover { border-color: var(--color-accent); }
        .category-tile i { font-size: 2rem; color: var(--color-accent); margin-bottom: 12px; }
        .category-tile strong { display: block; margin-bottom: 8px; font-size: 1.1rem; }
        .category-tile span { font-size: 0.9rem; color: var(--color-text-secondary); display: block; }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .game-card {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border-default);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform 0.3s ease;
        }
        .game-card:hover { transform: scale(1.03); border-color: var(--color-accent); }
        .game-card img { aspect-ratio: 1/1; width: 100%; object-fit: cover; }
        .game-card h3 { font-size: 1rem; padding: 12px; margin: 0; text-align: center; color: var(--color-text-primary); }

        .facts-container { background: var(--color-bg-surface); border-radius: var(--radius-md); 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 8px; vertical-align: top; }
        .facts-label { color: var(--color-text-secondary); font-weight: 500; width: 40%; }
        .facts-value { color: var(--color-text-primary); }
        .terms-link { display: block; text-align: center; margin-top: 16px; font-size: 0.85rem; color: var(--color-text-muted); }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding: 16px 0;
            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: 0.9rem;
            border: 1px solid var(--color-border-default);
        }

        .promo-grid { display: grid; gap: 20px; }
        .promo-card {
            background: rgba(22, 35, 62, 0.6);
            backdrop-filter: blur(10px);
            border: 1px solid var(--color-border-brand);
            padding: 24px;
            border-radius: var(--radius-lg);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .promo-card h3 { margin: 0; color: var(--color-accent); }
        .promo-card p { margin: 0; color: var(--color-text-secondary); }

        .usp-grid { display: grid; gap: 20px; }
        .usp-tile {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border-left: 4px solid var(--color-accent);
        }
        .usp-tile i { font-size: 1.5rem; color: var(--color-accent); width: 30px; text-align: center; }
        .usp-content strong { display: block; font-size: 1.1rem; margin-bottom: 4px; }
        .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: 16px;
        }
        .payment-card {
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            border: 1px solid var(--color-border-default);
        }
        .payment-card i { font-size: 2rem; color: var(--color-accent); margin-bottom: 12px; }
        .payment-card strong { display: block; margin-bottom: 8px; }
        .payment-card p { font-size: 0.85rem; color: var(--color-text-secondary); margin: 0; }

        .guide-steps { display: grid; gap: 24px; }
        .guide-step { display: flex; gap: 20px; align-items: flex-start; }
        .step-number {
            min-width: 40px;
            height: 40px;
            background: var(--grad-brand);
            color: var(--color-btn-text);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.2rem;
        }
        .step-content h3 { margin: 0 0 8px 0; }
        .step-content h3 a { color: inherit; }

        .download-section {
            background: var(--color-bg-elevated);
            padding: 30px;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--color-border-default);
        }

        .player-guides { display: grid; gap: 20px; }
        .guide-item {
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-default);
        }
        .guide-meta { font-size: 0.8rem; color: var(--color-text-muted); margin-bottom: 12px; display: block; }

        .announcement-list { display: grid; gap: 16px; }
        .announcement-card {
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            display: flex;
            gap: 16px;
            border: 1px solid var(--color-border-default);
        }
        .announcement-card i { color: var(--color-accent); margin-top: 4px; }
        .announcement-body h3 { margin: 0 0 8px 0; font-size: 1.1rem; }
        .announcement-body p { margin: 0 0 8px 0; font-size: 0.9rem; color: var(--color-text-secondary); }
        .announcement-date { font-size: 0.8rem; color: var(--color-text-muted); }

        .faq-section { display: grid; gap: 16px; }
        .faq-item { background: var(--color-bg-surface); border-radius: var(--radius-md); border: 1px solid var(--color-border-default); }
        .faq-item summary { padding: 20px; cursor: pointer; list-style: none; outline: none; }
        .faq-item summary h3 { margin: 0; font-size: 1.1rem; display: flex; justify-content: space-between; align-items: center; }
        .faq-item summary h3::after { content: '\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; font-size: 0.9rem; transition: transform 0.3s ease; }
        .faq-item[open] summary h3::after { transform: rotate(180deg); }
        .faq-answer { padding: 0 20px 20px; color: var(--color-text-secondary); font-size: 0.95rem; }

        .about-container { background: var(--color-bg-surface); padding: 30px; border-radius: var(--radius-lg); border: 1px solid var(--color-border-default); }
        .team-card {
            margin-top: 30px;
            padding: 20px;
            background: var(--color-bg-elevated);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-brand);
        }

        .security-box {
            background: var(--color-bg-surface);
            padding: 30px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-default);
            text-align: center;
        }
        .security-links { display: flex; justify-content: center; gap: 20px; margin: 20px 0; flex-wrap: wrap; }
        .security-link { background: var(--color-bg-elevated); padding: 8px 16px; border-radius: var(--radius-sm); border: 1px solid var(--color-border-default); font-size: 0.9rem; }

        footer {
            margin-top: 60px;
            padding: 40px 0;
            border-top: 1px solid var(--color-border-default);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            max-width: 800px;
            margin: 0 auto 30px;
            text-align: center;
        }
        .footer-sitemap a { color: var(--color-text-secondary); font-size: 0.9rem; }
        .footer-contact { margin-bottom: 20px; color: var(--color-text-secondary); }
        .footer-legal { font-size: 0.85rem; color: var(--color-text-muted); max-width: 700px; margin: 0 auto; }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            background: var(--color-bg-surface);
            backdrop-filter: blur(15px);
            border-top: 1px solid var(--color-border-default);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding: 12px 0 calc(12px + env(safe-area-inset-bottom, 0px));
            z-index: 1000;
        }
        .nav-item { text-align: center; color: var(--color-text-secondary); text-decoration: none; font-size: 0.75rem; flex: 1; }
        .nav-item i { display: block; font-size: 1.2rem; margin-bottom: 4px; }
        .nav-item:hover { color: var(--color-accent); }

        .util-more-link { display: inline-block; margin-top: 15px; color: var(--color-accent); font-weight: 500; 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(3, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .navigator { position: static; display: none; }
            .promo-grid { grid-template-columns: repeat(3, 1fr); }
            .guide-steps { grid-template-columns: repeat(2, 1fr); }
        }

        @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(7, 1fr); }
            .guide-steps { grid-template-columns: repeat(4, 1fr); }
        }