:root {
            --brand-primary: #1A3A5F;
            --brand-primary-hover: #254E7D;
            --brand-secondary: #C0C0C8;
            --brand-secondary-hover: #D8D8E0;
            --brand-accent: #00F5FF;
            --bg-main: #060D1A;
            --bg-surface: #0D172B;
            --bg-elevated: #16233E;
            --bg-overlay: rgba(6, 13, 26, 0.75);
            --text-primary: #E6F1FF;
            --text-secondary: #B0C4DE;
            --text-muted: #708090;
            --text-contrast: #060D1A;
            --text-link: #00F5FF;
            --text-link-hover: #80FFFF;
            --btn-bg: #00F5FF;
            --btn-text: #060D1A;
            --btn-hover-bg: #80FFFF;
            --border-default: #1C2B46;
            --border-strong: #2D4263;
            --border-brand: #00F5FF;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 24px;
            --radius-pill: 9999px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --shadow-glow: 0 0 15px rgba(0, 245, 255, 0.4);
        }

        html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: 'Noto Sans Bengali', 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: 'Hind Siliguri', sans-serif; font-weight: 700; color: var(--text-primary); margin: 0; }
        h1 { font-size: clamp(1.6rem, 6.5vw, 2.4rem); line-height: 1.2; margin-bottom: 1rem; }
        h2 { font-size: clamp(1.3rem, 5.2vw, 1.8rem); line-height: 1.25; margin-top: 2rem; margin-bottom: 1rem; }
        h3 { font-size: clamp(1.05rem, 4.2vw, 1.25rem); line-height: 1.3; margin-bottom: 0.5rem; }

        a { color: var(--text-link); text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: var(--text-link-hover); }
        img { max-width: 100%; height: auto; display: block; }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            min-inline-size: 44px;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: all 0.3s ease;
            text-align: center;
        }
        .btn-primary { background: var(--btn-bg); color: var(--btn-text); }
        .btn-primary:hover { background: var(--btn-hover-bg); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
        .btn-block { width: 100%; display: block; box-sizing: border-box; }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            background: var(--bg-surface);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-default);
        }
        .header-logo { display: flex; align-items: center; gap: 8px; }
        .header-logo img { width: 25px; height: 25px; object-fit: contain; }
        .header-logo strong { font-size: 16px; font-weight: 400; }
        .header-auth { display: flex; gap: 10px; }

        .hero-section { text-align: center; padding: 3rem 0; }
        .hero-intro-text { color: var(--text-secondary); max-width: 800px; margin: 0 auto 2rem; }
        .hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 2rem; }
        .hero-tag {
            background: var(--bg-elevated);
            border: 1px solid var(--border-brand);
            color: var(--text-primary);
            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: 12px;
            margin: 2rem 0;
        }
        .category-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 1.5rem 1rem;
            border-radius: var(--radius-md);
            text-align: center;
            transition: all 0.3s ease;
        }
        .category-tile:hover { border-color: var(--brand-accent); background: var(--bg-elevated); }
        .category-tile i { font-size: 2rem; color: var(--brand-accent); margin-bottom: 0.5rem; }
        .category-tile strong { display: block; margin-bottom: 5px; font-size: 1.1rem; }
        .category-tile span { font-size: 0.85rem; color: var(--text-muted); }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-bottom: 2rem;
        }
        .game-card {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-default);
            transition: transform 0.3s ease;
        }
        .game-card:hover { transform: scale(1.03); border-color: var(--brand-accent); }
        .game-card img { aspect-ratio: 1/1; object-fit: cover; }
        .game-card h3 { padding: 10px; font-size: 1rem; text-align: center; margin: 0; color: var(--text-primary); }

        .facts-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1rem 0;
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .facts-table td { padding: 12px; border-bottom: 1px solid var(--border-default); }
        .facts-table td:first-child { font-weight: 600; color: var(--text-secondary); width: 40%; }
        .freshness-notice { font-style: italic; color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1rem; }
        .terms-link-wrapper { margin-top: 10px; text-align: center; font-size: 0.85rem; }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 10px;
            padding: 1rem 0;
            scrollbar-width: none;
            border-top: 1px solid var(--border-default);
            border-bottom: 1px solid var(--border-default);
            margin-bottom: 2rem;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            background: var(--bg-elevated);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            font-size: 0.9rem;
            border: 1px solid var(--border-strong);
        }

        .promo-card {
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            padding: 2rem;
            margin-bottom: 1.5rem;
            border: 1px solid var(--border-strong);
            position: relative;
            overflow: hidden;
        }
        .promo-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; width: 4px; height: 100%;
            background: var(--brand-accent);
        }

        .usp-grid { display: grid; gap: 15px; margin: 2rem 0; }
        .usp-tile {
            background: var(--bg-elevated);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            display: flex;
            gap: 15px;
            align-items: flex-start;
            border: 1px solid var(--border-default);
        }
        .usp-tile i { font-size: 1.5rem; color: var(--brand-accent); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin: 2rem 0;
        }
        .payment-card {
            background: var(--bg-surface);
            padding: 1.2rem;
            border-radius: var(--radius-md);
            text-align: center;
            border: 1px solid var(--border-default);
        }
        .payment-card i { font-size: 1.8rem; color: var(--text-primary); margin-bottom: 0.5rem; display: block; }
        .payment-card strong { display: block; margin-bottom: 8px; }
        .payment-card p { font-size: 0.8rem; color: var(--text-muted); margin: 0; }

        .guide-steps { display: grid; gap: 20px; margin: 2rem 0; }
        .step-item {
            display: flex;
            gap: 15px;
            background: var(--bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            align-items: flex-start;
        }
        .step-badge {
            background: var(--brand-accent);
            color: var(--text-contrast);
            width: 32px; height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            flex-shrink: 0;
        }
        .step-content h3 a { color: inherit; }

        .download-panel {
            background: var(--bg-elevated);
            padding: 2rem;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border-brand);
        }

        .announcement-grid { display: grid; gap: 15px; margin: 2rem 0; }
        .announcement-card {
            background: var(--bg-surface);
            padding: 1.2rem;
            border-radius: var(--radius-md);
            border-left: 3px solid var(--brand-accent);
        }
        .announcement-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0.5rem; }

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

        .trust-card {
            background: var(--bg-surface);
            padding: 2rem;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-strong);
            margin-top: 2rem;
        }
        .team-badge {
            background: var(--bg-elevated);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            margin-top: 2rem;
            border: 1px dashed var(--border-brand);
        }

        footer {
            background: var(--bg-surface);
            padding: 3rem 0 2rem;
            margin-top: 4rem;
            border-top: 1px solid var(--border-default);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 2rem;
        }
        .footer-sitemap a { font-size: 0.9rem; color: var(--text-secondary); }
        .footer-contact { margin-bottom: 1.5rem; font-size: 0.95rem; }
        .footer-legal { font-size: 0.85rem; color: var(--text-muted); }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            height: 72px;
            background: var(--bg-surface);
            border-top: 1px solid var(--border-default);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding-bottom: env(safe-area-inset-bottom);
            z-index: 2000;
            backdrop-filter: blur(10px);
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            color: var(--text-secondary);
            font-size: 0.75rem;
            text-decoration: none;
        }
        .nav-item i { font-size: 1.2rem; margin-bottom: 4px; }
        .nav-item:hover { color: var(--brand-accent); }

        .utility-link { color: var(--brand-accent); font-weight: 600; text-decoration: underline; }

        section {
            content-visibility: auto;
            contain-intrinsic-size: 1px 500px;
            margin-bottom: 3rem;
        }

        @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(2, 1fr); }
            .payment-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); }
            .game-grid { grid-template-columns: repeat(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .footer-sitemap { grid-template-columns: repeat(5, 1fr); }
        }