:root {
            --primary: #1D7BFF;
            --accent: rgb(189, 147, 249);
            --bg-dark: #0B111E;
            --bg-card: rgba(20, 30, 54, 0.7);
            --text-light: #F3F4F6;
            --text-muted: #9CA3AF;
            --border-color: rgba(29, 123, 255, 0.2);
            --glacier-blue: #E0F2FE;
            --deep-sea: #030712;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.6;
        }
        a { color: inherit; text-decoration: none; transition: all 0.3s ease; }
        
        
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background: rgba(11, 17, 30, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 16px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo { display: inline-flex; align-items: center; gap: 12px; }
        .logo img { height: 40px; }
        .logo span { font-size: 20px; font-weight: 800; color: var(--glacier-blue); }
        .nav-menu { display: flex; gap: 28px; }
        .menu-toggle { display: none; background: none; border: none; color: var(--text-light); font-size: 24px; }

        
        .drawer { position: fixed; top: 0; left: -300px; width: 300px; height: 100%; background: var(--bg-dark); z-index: 200; transition: left 0.4s ease; border-right: 1px solid var(--border-color); padding: 30px 24px; display: flex; flex-direction: column; gap: 40px; }
        .drawer.open { left: 0; }
        .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.7); z-index: 150; display: none; }
        .drawer-overlay.show { display: block; }

        
        .dl-hero {
            padding: 180px 24px 100px;
            text-align: center;
            background: radial-gradient(circle at 50% 20%, rgba(29, 123, 255, 0.15) 0%, rgba(3, 7, 18, 0) 80%);
        }
        .dl-hero h1 { font-size: clamp(32px, 4vw, 52px); color: #FFF; margin-bottom: 16px; }
        .dl-hero p { color: var(--text-muted); max-width: 600px; margin: 0 auto 40px; }

        .dl-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            max-width: 1000px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .dl-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px 30px;
            text-align: center;
            transition: all 0.3s ease;
        }
        .dl-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }
        .dl-platform { font-size: 40px; margin-bottom: 20px; }
        .dl-card h3 { font-size: 20px; color: #FFF; margin-bottom: 12px; }
        .dl-version { font-size: 13px; color: var(--text-muted); margin-bottom: 24px; }
        .dl-btn {
            display: block;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #FFF;
            padding: 12px 24px;
            border-radius: 6px;
            font-weight: 600;
        }

        .dl-instructions {
            max-width: 800px;
            margin: 100px auto;
            padding: 0 24px;
        }
        .dl-instructions h2 { font-size: 28px; color: var(--glacier-blue); margin-bottom: 30px; text-align: center; }
        .step-list { display: grid; gap: 24px; }
        .step-item {
            display: flex;
            gap: 20px;
            background: rgba(255,255,255,0.02);
            border: 1px solid rgba(255,255,255,0.05);
            padding: 24px;
            border-radius: 10px;
        }
        .step-num {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            background: rgba(29,123,255,0.1);
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .step-info h4 { color: #FFF; margin-bottom: 8px; }
        .step-info p { color: var(--text-muted); font-size: 14px; }

        
        footer {
            background: var(--deep-sea);
            border-top: 1px solid var(--border-color);
            padding: 80px 24px 30px;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 60px;
        }
        .footer-brand { display: flex; flex-direction: column; gap: 20px; }
        .footer-brand p { color: var(--text-muted); font-size: 14px; max-width: 320px; }
        .footer-links h4 { color: #FFF; font-size: 16px; margin-bottom: 20px; }
        .footer-links ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
        .footer-links a { color: var(--text-muted); font-size: 14px; }
        .footer-links a:hover { color: var(--primary); }
        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 16px;
        }

        @media (max-width: 768px) {
            .nav-menu { display: none; }
            .menu-toggle { display: block; }
            .footer-container { grid-template-columns: 1fr; }
        }