:root {
      --primary: #1D7BFF;
      --accent: rgb(255,184,108);
      --dark-bg: #0A1128;
      --light-bg: #F4F7FC;
      --text-dark: #111827;
      --text-light: #F3F4F6;
      --text-gray: #6B7280;
      --border-color: #E5E7EB;
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; color: var(--text-dark); background-color: #ffffff; line-height: 1.6; }
    a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
    
    header { background-color: var(--dark-bg); color: var(--text-light); position: sticky; top: 0; z-index: 100; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
    .header-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 15px 20px; }
    .logo { display: inline-flex; align-items: center; gap: 12px; }
    .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-light); white-space: nowrap; }
    .nav-links { display: flex; align-items: center; gap: 24px; }
    .nav-links a { font-size: 15px; color: rgba(255, 255, 255, 0.8); font-weight: 500; }
    .nav-links a:hover { color: var(--accent); }
    .nav-cta { background-color: var(--primary); color: #fff; padding: 8px 18px; border-radius: 6px; font-weight: bold; }
    .menu-btn { 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(0,0,0,0.6); z-index: 199; opacity: 0; pointer-events: none; transition: opacity 0.3s; }
    .drawer-overlay.active { opacity: 1; pointer-events: auto; }
    .drawer { position: fixed; top: 0; left: -300px; width: 300px; height: 100%; background-color: var(--dark-bg); color: var(--text-light); z-index: 200; padding: 25px; transition: left 0.3s ease; display: flex; flex-direction: column; gap: 30px; }

    
    .page-banner { background: linear-gradient(135deg, var(--dark-bg) 0%, #102A43 100%); color: var(--text-light); padding: 60px 20px; text-align: center; }
    .page-banner h1 { font-size: 36px; font-weight: 800; margin-bottom: 15px; }
    .page-banner p { font-size: 18px; color: #A0AEC0; max-width: 700px; margin: 0 auto; }

    
    .download-section { padding: 80px 20px; background-color: var(--light-bg); }
    .download-container { max-width: 1000px; margin: 0 auto; display: flex; flex-direction: column; gap: 40px; }
    
    .platform-card { background: #fff; border: 1px solid var(--border-color); border-radius: 16px; padding: 40px; display: flex; align-items: center; justify-content: space-between; gap: 30px; box-shadow: 0 4px 6px rgba(0,0,0,0.02); }
    .platform-info { max-width: 60%; }
    .platform-badge { display: inline-block; background: rgba(29, 123, 255, 0.1); color: var(--primary); padding: 4px 12px; border-radius: 4px; font-size: 13px; font-weight: 600; margin-bottom: 15px; }
    .platform-info h2 { font-size: 26px; font-weight: bold; margin-bottom: 12px; }
    .platform-info p { color: var(--text-gray); font-size: 15px; margin-bottom: 25px; line-height: 1.6; }
    .download-actions { display: flex; flex-wrap: wrap; gap: 15px; }
    .btn-download { display: inline-flex; align-items: center; gap: 10px; background-color: var(--primary); color: #fff; padding: 12px 24px; border-radius: 8px; font-weight: bold; font-size: 15px; }
    .btn-download:hover { background-color: #1565D8; transform: translateY(-2px); }
    .btn-outline { background-color: transparent; border: 1px solid var(--border-color); color: var(--text-dark); }
    .btn-outline:hover { background-color: var(--light-bg); border-color: var(--text-dark); }

    .platform-image { width: 30%; display: flex; justify-content: center; align-items: center; }
    .platform-image svg { width: 120px; height: 120px; fill: var(--primary); opacity: 0.85; }

    
    .steps-section { padding: 80px 20px; }
    .steps-container { max-width: 1000px; margin: 0 auto; text-align: center; }
    .steps-title { font-size: 28px; font-weight: bold; margin-bottom: 50px; }
    .steps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 30px; }
    .step-card { position: relative; }
    .step-num { width: 40px; height: 40px; background-color: var(--primary); color: #fff; font-weight: bold; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px auto; font-size: 18px; box-shadow: 0 4px 10px rgba(29, 123, 255, 0.3); }
    .step-card h3 { font-size: 18px; font-weight: bold; margin-bottom: 10px; }
    .step-card p { color: var(--text-gray); font-size: 14px; }

    
    footer { background-color: var(--dark-bg); color: var(--text-light); padding: 60px 20px 20px 20px; border-top: 2px solid var(--primary); font-size: 14px; }
    .footer-grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; margin-bottom: 50px; }
    .footer-brand { display: flex; flex-direction: column; gap: 20px; }
    .footer-brand p { color: #A0AEC0; }
    .footer-title { font-size: 16px; font-weight: bold; color: #fff; margin-bottom: 20px; border-left: 3px solid var(--primary); padding-left: 10px; }
    .footer-links { list-style: none; display: flex; flex-direction: column; gap: 12px; }
    .footer-links a { color: #A0AEC0; }
    .footer-links a:hover { color: var(--accent); padding-left: 5px; }
    .footer-bottom { max-width: 1200px; margin: 0 auto; border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; color: #6B7280; }

    @media (max-width: 768px) {
      .menu-btn { display: block; }
      .nav-links { display: none; }
      .platform-card { flex-direction: column; text-align: center; padding: 30px 20px; }
      .platform-info { max-width: 100%; }
      .download-actions { justify-content: center; }
      .platform-image { width: 100%; }
      .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    }