:root {
      --primary: #22D3EE;
      --deep-bg: #020617;
      --electric-blue: #3B82F6;
      --pale-ice: #E0F2FE;
      --accent-green: #34D399;
      --text-light: #F8FAFC;
      --text-muted: #94A3B8;
      --card-bg: rgba(15, 23, 42, 0.6);
      --border-cyan: rgba(34, 211, 238, 0.2);
      --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { background-color: var(--deep-bg); color: var(--text-light); font-family: var(--font-family); line-height: 1.6; }
    a { color: inherit; text-decoration: none; transition: all 0.3s ease; }
    .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

    header { background-color: rgba(2, 6, 23, 0.85); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255, 255, 255, 0.05); position: sticky; top: 0; z-index: 1000; }
    .header-container { display: flex; justify-content: space-between; align-items: center; height: 80px; }
    .logo { display: inline-flex; align-items: center; gap: 12px; }
    .logo img { display: block; height: 40px; width: auto; max-width: 160px; object-fit: contain; }
    .logo span { display: inline-block; font-size: 20px; font-weight: 800; color: var(--primary); }
    .nav-menu { display: flex; align-items: center; gap: 32px; }
    .nav-menu a { font-size: 15px; font-weight: 500; color: var(--text-muted); }
    .nav-menu a:hover { color: var(--primary); }
    .header-btn { background: linear-gradient(135deg, var(--primary), var(--electric-blue)); color: var(--deep-bg); font-weight: 600; padding: 10px 20px; border-radius: 6px; font-size: 14px; }
    .menu-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 6px; }
    .menu-toggle span { display: block; width: 25px; height: 2px; background-color: var(--text-light); transition: all 0.3s; }
    
    .drawer { position: fixed; top: 0; left: -100%; width: 300px; height: 100vh; background-color: var(--deep-bg); border-right: 1px solid var(--border-cyan); z-index: 1001; transition: left 0.4s; padding: 30px 20px; display: flex; flex-direction: column; gap: 40px; }
    .drawer.active { left: 0; }
    .drawer-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background-color: rgba(2, 6, 23, 0.8); backdrop-filter: blur(4px); z-index: 1000; display: none; }
    .drawer-overlay.active { display: block; }
    .drawer-header { display: flex; justify-content: space-between; align-items: center; }
    .drawer-close { background: none; border: none; color: var(--text-muted); font-size: 24px; cursor: pointer; }
    .drawer-nav { display: flex; flex-direction: column; gap: 20px; }

    
    .dl-banner { padding: 100px 0; text-align: center; background: radial-gradient(circle at 50% 50%, rgba(34, 211, 238, 0.15) 0%, transparent 60%); }
    .dl-title { font-size: 40px; font-weight: 800; margin-bottom: 20px; }
    .dl-desc { font-size: 18px; color: var(--text-muted); max-width: 700px; margin: 0 auto; }

    
    .dl-options { padding: 60px 0; }
    .dl-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .dl-card { background: var(--card-bg); border: 1px solid rgba(255, 255, 255, 0.05); border-radius: 16px; padding: 40px 24px; text-align: center; transition: all 0.3s; }
    .dl-card:hover { border-color: var(--primary); transform: translateY(-5px); }
    .dl-card-icon { font-size: 48px; margin-bottom: 20px; }
    .dl-card-title { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
    .dl-card-desc { font-size: 14px; color: var(--text-muted); margin-bottom: 30px; min-height: 42px; }
    .dl-card-btn { display: inline-block; background: linear-gradient(135deg, var(--primary), var(--electric-blue)); color: var(--deep-bg); font-weight: 700; padding: 12px 24px; border-radius: 8px; width: 100%; }

    
    .dl-steps { padding: 80px 0; background-color: rgba(15, 23, 42, 0.2); }
    .step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-top: 40px; }
    .step-card { text-align: center; padding: 30px; }
    .step-num { width: 50px; height: 50px; border-radius: 50%; background: rgba(34, 211, 238, 0.1); border: 1px solid var(--border-cyan); display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; color: var(--primary); margin: 0 auto 20px auto; }
    .step-card h3 { font-size: 18px; margin-bottom: 12px; }
    .step-card p { font-size: 14px; color: var(--text-muted); }

    
    footer { background-color: #010409; border-top: 1px solid rgba(255, 255, 255, 0.05); padding: 80px 0 40px 0; color: var(--text-muted); margin-top: 80px; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 60px; }
    .footer-about .logo { margin-bottom: 20px; }
    .footer-about p { font-size: 14px; line-height: 1.8; margin-bottom: 20px; }
    .footer-title { font-size: 16px; font-weight: 700; color: #FFF; margin-bottom: 24px; }
    .footer-links { list-style: none; }
    .footer-links li { margin-bottom: 12px; }
    .footer-links a { font-size: 14px; }
    .footer-links a:hover { color: var(--primary); }
    .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.05); padding-top: 40px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; }
    .footer-legal { display: flex; gap: 24px; }

    @media (max-width: 1024px) {
      .dl-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .nav-menu, .header-btn { display: none; }
      .menu-toggle { display: flex; }
      .dl-grid { grid-template-columns: 1fr; }
      .step-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 20px; text-align: center; }
    }