:root {
      --primary-color: #1D7BFF;
      --accent-color: rgb(0,184,148);
      --bg-dark: #070B19;
      --bg-card: #10162D;
      --text-light: #F3F4F6;
      --text-muted: #9CA3AF;
      --border-color: rgba(255, 255, 255, 0.08);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, 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 { background: rgba(7, 11, 25, 0.85); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000; height: 70px; }
    .header-container { max-width: 1200px; margin: 0 auto; padding: 0 20px; height: 100%; display: flex; align-items: center; justify-content: space-between; }
    .logo { display: inline-flex; align-items: center; gap: 12px; }
    .logo img { height: 40px; width: auto; max-width: 160px; object-fit: contain; }
    .logo span { font-size: 20px; font-weight: 800; color: #FFF; }
    .nav-menu { display: flex; align-items: center; gap: 30px; }
    .nav-menu a { font-size: 15px; font-weight: 500; color: var(--text-muted); }
    .nav-menu a:hover { color: var(--primary-color); }
    .nav-btn { background: linear-gradient(135deg, var(--primary-color), var(--accent-color)); padding: 8px 20px; border-radius: 20px; color: #fff !important; font-weight: 600; }
    .menu-toggle { display: none; background: none; border: none; color: var(--text-light); font-size: 24px; cursor: pointer; }

    
    .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.7); backdrop-filter: blur(4px); z-index: 1001; opacity: 0; visibility: hidden; transition: all 0.3s; }
    .drawer-overlay.active { opacity: 1; visibility: visible; }
    .drawer { position: fixed; top: 0; left: -280px; width: 280px; height: 100%; background: var(--bg-card); z-index: 1002; transition: all 0.3s; display: flex; flex-direction: column; padding: 24px; }
    .drawer.active { left: 0; }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 30px; border-bottom: 1px solid var(--border-color); padding-bottom: 15px; }
    .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-hero {
      background: radial-gradient(circle at 50% 0%, rgba(29, 123, 255, 0.15), transparent 70%), var(--bg-dark);
      padding: 100px 20px; text-align: center;
    }
    .dl-hero h1 { font-size: 38px; font-weight: 800; margin-bottom: 15px; }
    .dl-hero p { font-size: 16px; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

    .dl-options { max-width: 1200px; margin: -40px auto 80px; padding: 0 20px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
    .dl-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 16px; padding: 40px 30px; text-align: center; display: flex; flex-direction: column; align-items: center; }
    .dl-icon { font-size: 48px; margin-bottom: 20px; }
    .dl-card h3 { font-size: 22px; font-weight: 700; color: #FFF; margin-bottom: 10px; }
    .dl-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 25px; }
    .dl-qr { width: 140px; height: 140px; background: #FFF; padding: 10px; border-radius: 8px; margin-bottom: 25px; display: flex; align-items: center; justify-content: center; }
    .dl-qr img { width: 100%; height: 100%; }
    .dl-btn { background: var(--primary-color); color: #FFF; font-weight: 600; padding: 12px 28px; border-radius: 8px; width: 100%; text-align: center; }
    .dl-btn:hover { background: var(--accent-color); transform: translateY(-2px); }

    
    .dl-guide { max-width: 900px; margin: 0 auto 100px; padding: 0 20px; }
    .dl-guide h2 { font-size: 26px; text-align: center; margin-bottom: 40px; }
    .guide-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
    .guide-step { text-align: center; }
    .step-num { width: 36px; height: 36px; border-radius: 50%; background: rgba(0, 184, 148, 0.1); border: 2px solid var(--accent-color); color: var(--accent-color); font-weight: 700; display: flex; align-items: center; justify-content: center; margin: 0 auto 15px; }
    .guide-step h4 { font-size: 16px; margin-bottom: 8px; color: #FFF; }
    .guide-step p { font-size: 13px; color: var(--text-muted); }

    
    footer { background: #040712; border-top: 1px solid var(--border-color); padding: 80px 20px 40px; }
    .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-desc { font-size: 14px; color: var(--text-muted); max-width: 320px; }
    .footer-links h4 { font-size: 16px; font-weight: 600; color: #FFFFFF; margin-bottom: 25px; }
    .footer-links ul { list-style: none; }
    .footer-links ul li { margin-bottom: 15px; }
    .footer-links ul li a { font-size: 14px; color: var(--text-muted); }
    .footer-links ul li a:hover { color: var(--primary-color); }
    .footer-bottom { max-width: 1200px; margin: 0 auto; padding-top: 30px; border-top: 1px solid var(--border-color); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; }
    .footer-info { font-size: 13px; color: var(--text-muted); }

    @media (max-width: 1024px) {
      .dl-options { grid-template-columns: repeat(2, 1fr); margin-top: 0; }
      .guide-steps { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .nav-menu { display: none; }
      .menu-toggle { display: block; }
      .dl-options { grid-template-columns: 1fr; }
    }