:root {
      --primary: rgb(13,148,136);
      --primary-dark: #0f766e;
      --primary-light: #f0fdfa;
      --text-dark: #0f172a;
      --text-muted: #64748b;
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --border: #e2e8f0;
      --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: var(--font); color: var(--text-dark); background-color: var(--bg-white); line-height: 1.6; }
    a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
    
    
    header { background: var(--bg-white); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
    .header-container { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; }
    .logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
    .logo img { display: block; height: 40px; width: auto; max-width: 160px; object-fit: contain; flex-shrink: 0; }
    .logo span { display: inline-block; font-size: 20px; font-weight: 800; line-height: 1; color: var(--text-dark); white-space: nowrap; }
    .nav-menu { display: flex; align-items: center; gap: 28px; }
    .nav-menu a { font-size: 15px; font-weight: 500; color: var(--text-dark); }
    .nav-menu a:hover { color: var(--primary); }
    .header-right { display: flex; align-items: center; gap: 16px; }
    .btn-header { background: var(--primary); color: white !important; padding: 8px 18px; border-radius: 6px; font-size: 14px; font-weight: 600; }
    .btn-header:hover { background: var(--primary-dark); }
    .menu-btn { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--text-dark); }

    
    .drawer-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 998; }
    .drawer { position: fixed; top: 0; left: -280px; width: 280px; height: 100%; background: var(--bg-white); z-index: 999; box-shadow: 2px 0 10px rgba(0,0,0,0.1); transition: left 0.3s ease; display: flex; flex-direction: column; }
    .drawer.active { left: 0; }
    .drawer-overlay.active { display: block; }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; padding: 20px; border-bottom: 1px solid var(--border); }
    .drawer-close { background: none; border: none; font-size: 28px; cursor: pointer; color: var(--text-muted); }
    .drawer-nav { display: flex; flex-direction: column; padding: 20px; gap: 18px; }
    .drawer-nav a { font-size: 16px; font-weight: 500; color: var(--text-dark); }
    .drawer-nav a:hover { color: var(--primary); }

    
    .download-banner { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); color: white; text-align: center; padding: 80px 20px; }
    .download-banner h1 { font-size: 38px; font-weight: 800; margin-bottom: 20px; }
    .download-banner p { font-size: 16px; opacity: 0.9; max-width: 700px; margin: 0 auto; }

    .download-section { padding: 80px 20px; }
    .container { max-width: 1200px; margin: 0 auto; }
    
    .download-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-bottom: 60px; }
    .download-card { border: 1px solid var(--border); border-radius: 12px; padding: 40px 30px; text-align: center; box-shadow: var(--shadow); transition: transform 0.2s; background: var(--bg-white); }
    .download-card:hover { transform: translateY(-5px); border-color: var(--primary); }
    .platform-icon { width: 64px; height: 64px; background: var(--primary-light); color: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 24px; font-size: 24px; font-weight: bold; }
    .download-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
    .download-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 30px; line-height: 1.6; }
    .btn-dl { display: inline-block; background: var(--primary); color: white !important; width: 100%; padding: 12px; border-radius: 8px; font-weight: 600; font-size: 15px; box-shadow: 0 4px 10px rgba(13,148,136,0.2); }
    .btn-dl:hover { background: var(--primary-dark); }

    
    .setup-guide { background: var(--bg-light); border: 1px solid var(--border); border-radius: 12px; padding: 40px; }
    .setup-guide h2 { font-size: 24px; font-weight: 800; margin-bottom: 30px; border-left: 4px solid var(--primary); padding-left: 12px; }
    .guide-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
    .guide-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 10px; color: var(--text-dark); }
    .guide-item p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

    
    footer { background: #0f172a; color: #94a3b8; border-top: 1px solid #1e293b; font-size: 14px; }
    .footer-top { padding: 80px 20px 40px; }
    .footer-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; }
    .footer-brand { display: flex; flex-direction: column; gap: 20px; }
    .footer-brand .logo span { color: white; }
    .footer-brand-p { font-size: 14px; line-height: 1.6; }
    .footer-title { color: white; font-size: 16px; font-weight: 700; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 0.5px; }
    .footer-links { list-style: none; display: flex; flex-direction: column; gap: 12px; }
    .footer-links a:hover { color: white; }
    .footer-bottom { border-top: 1px solid #1e293b; padding: 30px 20px; text-align: center; }
    .footer-bottom-container { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
    .footer-disclaimer { max-width: 1200px; margin: 20px auto 0; font-size: 12px; line-height: 1.8; text-align: left; opacity: 0.6; padding: 0 20px; }

    @media (max-width: 1024px) {
      .download-grid { grid-template-columns: 1fr; }
      .guide-steps { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .nav-menu, .header-right .btn-header { display: none; }
      .menu-btn { display: block; }
      .footer-container { grid-template-columns: 1fr; gap: 30px; }
      .footer-bottom-container { flex-direction: column; text-align: center; }
    }