:root {
      --primary: rgb(34,197,94);
      --primary-hover: rgb(22,163,74);
      --primary-alpha: rgba(34,197,94, 0.15);
      --bg: #0b0f19;
      --surface: #111827;
      --surface-light: #1f2937;
      --text: #f3f4f6;
      --text-muted: #9ca3af;
      --border: rgba(255, 255, 255, 0.08);
      --radius: 12px;
      --container-width: 1200px;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { background-color: var(--bg); color: var(--text); 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; }
    .container { width: 100%; max-width: var(--container-width); margin: 0 auto; padding: 0 20px; }
    
    
    header { position: sticky; top: 0; z-index: 100; background: rgba(11, 15, 25, 0.8); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
    .header-container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
    .logo { display: inline-flex; align-items: center; gap: 12px; }
    .logo img { display: block; height: 36px; width: auto; max-width: 160px; object-fit: contain; }
    .logo span { display: inline-block; font-size: 20px; font-weight: 800; color: #fff; }
    .logo span em { color: var(--primary); font-style: normal; }
    .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); }
    .nav-actions { display: flex; align-items: center; gap: 16px; }
    .btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 20px; border-radius: var(--radius); font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.25s ease; }
    .btn-primary { background-color: var(--primary); color: #fff; border: none; }
    .btn-secondary { background-color: transparent; color: var(--text); border: 1px solid var(--border); }
    .menu-toggle { display: none; background: none; border: none; color: var(--text); font-size: 24px; cursor: pointer; }

    
    .drawer { position: fixed; top: 0; left: -100%; width: 300px; height: 100vh; background-color: var(--surface); z-index: 200; transition: left 0.3s ease; padding: 24px; display: flex; flex-direction: column; gap: 32px; }
    .drawer.open { left: 0; }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; }
    .drawer-close { background: none; border: none; color: var(--text-muted); font-size: 24px; cursor: pointer; }
    .drawer-nav { display: flex; flex-direction: column; gap: 20px; }
    .drawer-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background-color: rgba(0,0,0,0.6); z-index: 150; opacity: 0; visibility: hidden; transition: all 0.3s ease; }
    .drawer-overlay.open { opacity: 1; visibility: visible; }

    
    .download-banner { text-align: center; padding: 80px 0; background: radial-gradient(circle at center, rgba(34,197,94, 0.08) 0%, transparent 80%); }
    .download-banner h1 { font-size: 40px; font-weight: 800; color: #fff; margin-bottom: 20px; }
    .download-banner p { color: var(--text-muted); font-size: 18px; max-width: 700px; margin: 0 auto; }

    
    .platforms-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 60px; }
    .platform-card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 40px 32px; text-align: center; display: flex; flex-direction: column; align-items: center; justify-content: space-between; transition: all 0.3s ease; }
    .platform-card:hover { transform: translateY(-5px); border-color: rgba(34,197,94,0.3); }
    .platform-icon { font-size: 48px; margin-bottom: 24px; }
    .platform-card h2 { font-size: 24px; font-weight: 700; color: #fff; margin-bottom: 12px; }
    .platform-card p { color: var(--text-muted); font-size: 14px; margin-bottom: 32px; line-height: 1.6; }
    .platform-card .btn { width: 100%; }

    
    .guide-section { background: rgba(255,255,255,0.01); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 80px 0; margin-bottom: 80px; }
    .guide-title { text-align: center; margin-bottom: 50px; }
    .guide-title h2 { font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 16px; }
    .guide-title p { color: var(--text-muted); }
    .steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
    .step-item { position: relative; }
    .step-num { font-size: 48px; font-weight: 800; color: var(--primary-alpha); line-height: 1; margin-bottom: 16px; }
    .step-item h3 { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 12px; }
    .step-item p { color: var(--text-muted); font-size: 14px; line-height: 1.6; }

    
    footer { background: #090d16; border-top: 1px solid var(--border); padding: 60px 0 30px; font-size: 14px; }
    .footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; margin-bottom: 40px; }
    .footer-about p { color: var(--text-muted); margin-top: 16px; margin-bottom: 24px; font-size: 14px; max-width: 320px; }
    .footer-links h4 { color: #fff; font-weight: 700; margin-bottom: 20px; font-size: 15px; }
    .footer-links ul { list-style: none; }
    .footer-links li { margin-bottom: 12px; }
    .footer-links a { color: var(--text-muted); }
    .footer-links a:hover { color: var(--primary); }
    .footer-bottom { border-top: 1px solid var(--border); padding-top: 30px; display: flex; justify-content: space-between; align-items: center; color: var(--text-muted); font-size: 12px; }
    .footer-warning { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--border); color: rgba(255, 255, 255, 0.3); font-size: 11px; line-height: 1.6; }

    @media (max-width: 992px) {
      .platforms-grid { grid-template-columns: 1fr; }
      .steps-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .nav-menu, .nav-actions { display: none; }
      .menu-toggle { display: block; }
      .footer-grid { grid-template-columns: 1fr; }
    }