:root {
      --primary: #1D7BFF;
      --accent: rgb(124, 58, 237);
      --dark-bg: #0B0F19;
      --dark-card: rgba(17, 24, 39, 0.7);
      --dark-border: rgba(255, 255, 255, 0.08);
      --text-main: #F3F4F6;
      --text-muted: #9CA3AF;
      --glass-blur: blur(12px);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      background-color: var(--dark-bg);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      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, 15, 25, 0.8); backdrop-filter: var(--glass-blur);
      border-bottom: 1px solid var(--dark-border);
    }
    .nav-container {
      max-width: 1200px; margin: 0 auto; padding: 16px 20px;
      display: flex; justify-content: space-between; align-items: center;
    }
    .logo { display: inline-flex; align-items: center; gap: 12px; }
    .logo img { display: block; height: 40px; width: auto; max-width: 160px; }
    .logo span {
      display: inline-block; font-size: 20px; font-weight: 800; color: #fff;
      background: linear-gradient(to right, #fff, var(--primary));
      -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    }
    .desktop-nav { display: flex; align-items: center; gap: 24px; }
    .desktop-nav a { font-size: 15px; font-weight: 500; color: var(--text-muted); }
    .desktop-nav a:hover { color: var(--primary); }
    .nav-btn {
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      padding: 8px 18px; border-radius: 6px; color: #fff !important; font-weight: 600; font-size: 14px;
    }
    .menu-toggle { display: none; background: none; border: none; color: #fff; font-size: 24px; cursor: pointer; }

    
    .drawer {
      position: fixed; top: 0; left: -100%; width: 280px; height: 100%; background: var(--dark-bg);
      border-right: 1px solid var(--dark-border); z-index: 200; transition: all 0.4s ease; padding: 30px 20px;
      display: flex; flex-direction: column; gap: 30px;
    }
    .drawer.open { left: 0; }
    .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: 18px; }
    .drawer-nav a { font-size: 16px; font-weight: 500; color: var(--text-muted); padding: 8px 0; border-bottom: 1px solid var(--dark-border); }
    .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.6); backdrop-filter: blur(4px); z-index: 150; display: none; }
    .drawer-overlay.active { display: block; }

    
    .download-hero {
      padding: 160px 20px 80px; text-align: center;
      background: linear-gradient(to bottom, #111827 0%, var(--dark-bg) 100%);
    }
    .download-title { font-size: clamp(32px, 5vw, 48px); font-weight: 800; color: #fff; margin-bottom: 20px; }
    .download-subtitle { font-size: 18px; color: var(--text-muted); max-width: 700px; margin: 0 auto; }

    .download-container { max-width: 1100px; margin: 0 auto; padding: 60px 20px; }
    .download-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
    .download-card {
      background: var(--dark-card); border: 1px solid var(--dark-border); border-radius: 16px; padding: 40px;
      display: flex; flex-direction: column; justify-content: space-between; transition: all 0.3s ease;
    }
    .download-card:hover { border-color: var(--primary); transform: translateY(-3px); }
    .card-head { margin-bottom: 30px; }
    .plat-badge { display: inline-block; background: rgba(29, 123, 255, 0.1); border: 1px solid rgba(29, 123, 255, 0.3); color: var(--primary); padding: 4px 12px; border-radius: 20px; font-size: 13px; font-weight: 600; margin-bottom: 15px; }
    .plat-title { font-size: 24px; font-weight: 700; color: #fff; margin-bottom: 10px; }
    .plat-desc { font-size: 15px; color: var(--text-muted); }
    
    .dl-btn {
      display: block; text-align: center; background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      color: #fff; padding: 15px; border-radius: 8px; font-weight: 700; font-size: 16px; margin-top: 30px;
    }

    
    .steps-section { background: rgba(17, 24, 39, 0.4); padding: 80px 20px; border-top: 1px solid var(--dark-border); border-bottom: 1px solid var(--dark-border); }
    .steps-title { text-align: center; font-size: 28px; font-weight: 800; color: #fff; margin-bottom: 50px; }
    .steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; max-width: 1100px; margin: 0 auto; }
    .step-box { text-align: center; }
    .step-num { display: inline-flex; width: 50px; height: 50px; border-radius: 50%; background: rgba(29, 123, 255, 0.1); border: 1px solid var(--primary); color: var(--primary); font-size: 20px; font-weight: 800; align-items: center; justify-content: center; margin-bottom: 20px; }
    .step-heading { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 12px; }
    .step-desc { font-size: 14px; color: var(--text-muted); }

    
    footer { background: #070a12; border-top: 1px solid var(--dark-border); padding: 80px 20px 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-desc { font-size: 14px; color: var(--text-muted); line-height: 1.6; max-width: 320px; }
    .footer-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 20px; }
    .footer-links { list-style: none; display: flex; flex-direction: column; gap: 12px; }
    .footer-links a { font-size: 14px; color: var(--text-muted); }
    .footer-links a:hover { color: var(--primary); }
    .footer-bottom { max-width: 1200px; margin: 0 auto; border-top: 1px solid var(--dark-border); padding-top: 30px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; font-size: 13px; color: var(--text-muted); }

    @media (max-width: 768px) {
      .desktop-nav { display: none; }
      .menu-toggle { display: block; }
      .download-grid { grid-template-columns: 1fr; }
      .steps-grid { grid-template-columns: 1fr; }
      .footer-container { grid-template-columns: 1fr; gap: 30px; }
    }