:root {
      --primary-color: rgb(94,92,230);
      --primary-hover: rgba(94,92,230,0.85);
      --primary-light: rgba(94,92,230,0.1);
      --bg-dark: #0B192C;
      --bg-light: #F5F7FA;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --max-width: 1200px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, BlinkMacSystemFont, sans-serif; color: var(--text-main); background-color: #FFF; line-height: 1.6; }
    a { color: inherit; text-decoration: none; }

    
    .site-header { background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; }
    .header-container { max-width: var(--max-width); margin: 0 auto; padding: 16px 20px; display: flex; align-items: center; justify-content: space-between; }
    .logo { display: inline-flex; align-items: center; gap: 12px; }
    .logo img { display: block; height: 40px; width: auto; max-width: 160px; object-fit: contain; }
    .logo span { display: inline-block; font-size: 20px; font-weight: 800; color: var(--bg-dark); }
    .desktop-nav { display: flex; gap: 24px; }
    .desktop-nav a { font-size: 15px; font-weight: 500; color: var(--text-main); transition: var(--transition); }
    .desktop-nav a:hover { color: var(--primary-color); }
    .header-actions { display: flex; align-items: center; gap: 16px; }
    .btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 20px; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; transition: var(--transition); border: none; }
    .btn-primary { background-color: var(--primary-color); color: #FFF; }
    .mobile-menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; }
    .mobile-menu-toggle span { display: block; width: 24px; height: 2px; background-color: var(--text-main); }

    
    .mobile-drawer-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background-color: rgba(0,0,0,0.5); z-index: 199; opacity: 0; visibility: hidden; transition: var(--transition); }
    .mobile-drawer { position: fixed; top: 0; left: -300px; width: 300px; height: 100vh; background-color: #FFF; z-index: 200; display: flex; flex-direction: column; transition: var(--transition); }
    .mobile-drawer.active { left: 0; }
    .mobile-drawer-overlay.active { opacity: 1; visibility: visible; }
    .drawer-header { padding: 20px; border-bottom: 1px solid var(--border-color); display: flex; align-items: center; justify-content: space-between; }
    .drawer-close { background: none; border: none; font-size: 28px; color: var(--text-muted); }
    .drawer-body { flex: 1; overflow-y: auto; padding: 20px; }
    .drawer-nav { display: flex; flex-direction: column; gap: 16px; }
    .drawer-nav a { font-size: 16px; font-weight: 500; color: var(--text-main); padding: 8px 0; border-bottom: 1px solid rgba(0,0,0,0.03); }
    .drawer-footer { padding: 20px; border-top: 1px solid var(--border-color); }

    
    .dl-banner { background: radial-gradient(circle at top, #11223F 0%, var(--bg-dark) 100%); color: #FFF; padding: 80px 20px; text-align: center; }
    .dl-banner h1 { font-size: 38px; font-weight: 800; margin-bottom: 16px; }
    .dl-banner p { font-size: 16px; color: #94A3B8; max-width: 600px; margin: 0 auto; }

    .dl-grid-section { padding: 80px 20px; }
    .dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; max-width: var(--max-width); margin: 0 auto; }
    .dl-card { background: #FFF; border: 1px solid var(--border-color); border-radius: 16px; padding: 40px 30px; text-align: center; transition: var(--transition); display: flex; flex-direction: column; align-items: center; }
    .dl-card:hover { transform: translateY(-5px); box-shadow: 0 20px 40px rgba(0,0,0,0.08); border-color: var(--primary-color); }
    .dl-card .icon { font-size: 48px; margin-bottom: 24px; }
    .dl-card h3 { font-size: 22px; font-weight: 700; color: var(--bg-dark); margin-bottom: 12px; }
    .dl-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 24px; line-height: 1.5; flex: 1; }
    .dl-card .btn { width: 100%; justify-content: center; padding: 12px; }

    
    .guide-section { background-color: var(--bg-light); padding: 80px 20px; }
    .guide-container { max-width: 900px; margin: 0 auto; }
    .guide-header { text-align: center; margin-bottom: 50px; }
    .guide-header h2 { font-size: 32px; font-weight: 800; color: var(--bg-dark); }
    .guide-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
    .step-card { background-color: #FFF; border-radius: 12px; padding: 30px; position: relative; text-align: center; }
    .step-card .num { position: absolute; top: -20px; left: 50%; transform: translateX(-50%); width: 40px; height: 40px; border-radius: 50%; background-color: var(--primary-color); color: #FFF; font-weight: 800; display: flex; align-items: center; justify-content: center; border: 4px solid #FFF; }
    .step-card h3 { margin-top: 10px; font-size: 18px; font-weight: 700; color: var(--bg-dark); margin-bottom: 12px; }
    .step-card p { font-size: 13px; color: var(--text-muted); line-height: 1.5; margin: 0; }

    
    .site-footer { background-color: var(--bg-dark); color: #94A3B8; padding: 80px 20px 30px; border-top: 1px solid rgba(255,255,255,0.05); }
    .footer-container { max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 40px; margin-bottom: 60px; }
    .footer-brand .logo span { color: #FFF; }
    .footer-brand .brand-desc { margin-top: 20px; font-size: 14px; line-height: 1.6; }
    .footer-col h4 { color: #FFF; font-size: 16px; font-weight: 700; margin-bottom: 20px; }
    .footer-col ul { list-style: none; }
    .footer-col ul li { margin-bottom: 12px; }
    .footer-col ul li a { font-size: 14px; transition: var(--transition); }
    .footer-col ul li a:hover { color: #00E5FF; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding-top: 30px; }
    .footer-bottom-container { max-width: var(--max-width); margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: 16px; font-size: 13px; text-align: center; }
    .risk-warning { color: #64748B; font-size: 12px; max-width: 900px; line-height: 1.5; }

    @media (max-width: 1024px) {
      .dl-grid { grid-template-columns: repeat(2, 1fr); }
      .guide-steps { grid-template-columns: 1fr; gap: 40px; }
    }
    @media (max-width: 768px) {
      .desktop-nav, .header-actions .btn { display: none; }
      .mobile-menu-toggle { display: flex; }
      .dl-grid { grid-template-columns: 1fr; }
      .footer-container { grid-template-columns: 1fr; }
    }