:root {
      --primary-color: rgb(48, 209, 88);
      --bg-dark: #0a0e17;
      --bg-card: #131a26;
      --text-main: #ffffff;
      --text-muted: #8a99ad;
      --border-color: rgba(255, 255, 255, 0.1);
      --max-width: 1200px;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, sans-serif; background-color: var(--bg-dark); color: var(--text-main); line-height: 1.6; }
    a { color: inherit; text-decoration: none; transition: 0.3s; }
    .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

    
    .site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background: rgba(10, 14, 23, 0.95); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-color); height: 72px; }
    .header-container { display: flex; justify-content: space-between; align-items: center; height: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }
    .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: 18px; font-weight: 800; color: #fff; }
    .desktop-nav { display: flex; gap: 30px; }
    .desktop-nav a { font-size: 15px; color: var(--text-muted); }
    .desktop-nav a:hover { color: var(--primary-color); }
    .btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 24px; border-radius: 6px; font-size: 14px; font-weight: 600; cursor: pointer; transition: 0.3s; border: none; }
    .btn-primary { background-color: var(--primary-color); color: #000; }
    .btn-outline { background-color: transparent; border: 1px solid var(--border-color); color: var(--text-main); }
    .menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; }

    
    .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.7); z-index: 1999; opacity: 0; visibility: hidden; transition: 0.3s; }
    .drawer-menu { position: fixed; top: 0; left: -280px; width: 280px; height: 100%; background-color: var(--bg-card); z-index: 2000; transition: 0.3s; padding: 20px; display: flex; flex-direction: column; }
    .drawer-menu.active { left: 0; }
    .drawer-overlay.active { opacity: 1; visibility: visible; }
    .drawer-close { background: none; border: none; color: #fff; font-size: 28px; }

    
    .inner-banner { padding: 120px 0 50px 0; background: linear-gradient(180deg, rgba(48,209,88,0.08) 0%, transparent 100%); text-align: center; }
    .inner-title { font-size: 32px; font-weight: 800; }

    
    .section { padding: 60px 0; }
    .download-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
    .download-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; padding: 40px 30px; text-align: center; transition: 0.3s; }
    .download-card:hover { transform: translateY(-5px); border-color: var(--primary-color); }
    .download-icon { font-size: 48px; color: var(--primary-color); margin-bottom: 20px; }
    .download-card h3 { font-size: 22px; margin-bottom: 15px; }
    .download-card p { color: var(--text-muted); font-size: 14px; margin-bottom: 30px; }

    
    .guide-box { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; padding: 40px; margin-top: 50px; }
    .guide-box h2 { font-size: 24px; margin-bottom: 30px; text-align: center; }
    .steps-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .step-item { text-align: center; position: relative; }
    .step-num { width: 40px; height: 40px; background: var(--primary-color); color: #000; font-weight: 800; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 15px auto; }
    .step-item h4 { font-size: 16px; margin-bottom: 8px; }
    .step-item p { color: var(--text-muted); font-size: 13px; }

    
    .site-footer { background: #06090f; padding: 80px 0 30px 0; border-top: 1px solid var(--border-color); color: var(--text-muted); }
    .footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; margin-bottom: 50px; }
    .footer-col h5 { color: var(--text-main); font-size: 16px; margin-bottom: 20px; }
    .footer-col ul { list-style: none; }
    .footer-col ul li { margin-bottom: 12px; }
    .footer-col ul a:hover { color: var(--primary-color); }
    .footer-about p { font-size: 14px; margin-top: 15px; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding-top: 30px; display: flex; justify-content: space-between; font-size: 13px; }

    @media(max-width: 992px) {
      .download-grid { grid-template-columns: 1fr; }
      .steps-flow { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    }
    @media(max-width: 768px) {
      .desktop-nav { display: none; }
      .menu-toggle { display: flex; }
      .steps-flow { grid-template-columns: 1fr; }
    }