:root {
      --primary-color: rgb(52,168,83);
      --primary-hover: rgb(43,143,69);
      --secondary-color: #161b26;
      --bg-light: #f8f9fa;
      --text-dark: #111827;
      --text-muted: #6b7280;
      --border-color: #e5e7eb;
      --card-bg: #ffffff;
      --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    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 { color: inherit; text-decoration: none; }

    
    .site-header { position: sticky; top: 0; background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border-color); z-index: 1000; }
    .header-container { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 15px 20px; }
    .logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
    .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(--secondary-color); white-space: nowrap; }
    .desktop-nav { display: flex; gap: 30px; align-items: center; }
    .desktop-nav a { font-size: 15px; font-weight: 500; color: #374151; transition: color 0.3s; }
    .desktop-nav a:hover { color: var(--primary-color); }
    .header-actions { display: flex; align-items: center; gap: 15px; }
    .btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 20px; font-size: 14px; font-weight: 600; border-radius: 6px; transition: all 0.3s; cursor: pointer; border: none; }
    .btn-primary { background-color: var(--primary-color); color: #ffffff; }
    .btn-primary:hover { background-color: var(--primary-hover); transform: translateY(-1px); }
    .drawer-trigger { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 6px; padding: 5px; }
    .drawer-trigger span { display: block; width: 24px; height: 2px; background-color: var(--text-dark); transition: 0.3s; }

    
    .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); opacity: 0; pointer-events: none; transition: opacity 0.3s; z-index: 2000; }
    .drawer { position: fixed; top: 0; left: -300px; width: 300px; height: 100%; background: #ffffff; box-shadow: 2px 0 10px rgba(0,0,0,0.1); transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1); z-index: 2001; display: flex; flex-direction: column; }
    .drawer.active { left: 0; }
    .drawer-overlay.active { opacity: 1; pointer-events: auto; }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; padding: 20px; border-bottom: 1px solid var(--border-color); }
    .drawer-close { background: none; border: none; font-size: 28px; cursor: pointer; color: var(--text-muted); }
    .drawer-nav { display: flex; flex-direction: column; padding: 20px 0; overflow-y: auto; flex-grow: 1; }
    .drawer-nav a { padding: 12px 24px; font-size: 16px; font-weight: 500; color: var(--text-dark); border-left: 3px solid transparent; }
    .drawer-nav a:hover { background: var(--bg-light); border-left-color: var(--primary-color); color: var(--primary-color); }
    .drawer-footer { padding: 20px; border-top: 1px solid var(--border-color); }

    
    .about-banner { background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); color: #ffffff; padding: 80px 20px; text-align: center; }
    .about-banner h1 { font-size: 36px; font-weight: 800; margin-bottom: 15px; }
    .about-banner p { font-size: 18px; color: #cbd5e1; max-width: 800px; margin: 0 auto; }

    
    .about-container { max-width: 1000px; margin: 60px auto; padding: 0 20px; }
    .brand-story { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 50px; align-items: center; margin-bottom: 80px; }
    .brand-story-content h2 { font-size: 28px; font-weight: 800; color: var(--secondary-color); margin-bottom: 20px; }
    .brand-story-content p { color: var(--text-muted); margin-bottom: 15px; line-height: 1.7; }
    .brand-graphics { background: radial-gradient(circle, rgba(52,168,83,0.15) 0%, transparent 70%); display: flex; justify-content: center; align-items: center; padding: 30px; }
    .brand-seal { width: 160px; height: 160px; border-radius: 50%; border: 4px dashed var(--primary-color); display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--primary-color); font-weight: 800; text-align: center; font-size: 14px; }

    
    .section-title { text-align: center; margin-bottom: 40px; }
    .section-title h2 { font-size: 28px; font-weight: 800; color: var(--secondary-color); }
    .pillar-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; margin-bottom: 80px; }
    .pillar-card { background: var(--bg-light); border: 1px solid var(--border-color); border-radius: 12px; padding: 30px; }
    .pillar-card h3 { font-size: 18px; font-weight: 700; color: var(--secondary-color); margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
    .pillar-card h3::before { content: ''; display: inline-block; width: 6px; height: 18px; background: var(--primary-color); border-radius: 2px; }
    .pillar-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

    
    .timeline-section { position: relative; padding-left: 30px; border-left: 2px solid var(--border-color); max-width: 800px; margin: 0 auto; }
    .timeline-item { position: relative; margin-bottom: 40px; }
    .timeline-item::before { content: ''; position: absolute; left: -37px; top: 5px; width: 12px; height: 12px; border-radius: 50%; background: var(--primary-color); border: 2px solid #ffffff; box-shadow: 0 0 0 4px rgba(52,168,83,0.2); }
    .timeline-year { font-size: 20px; font-weight: 800; color: var(--primary-color); margin-bottom: 8px; }
    .timeline-content h4 { font-size: 16px; font-weight: 700; color: var(--secondary-color); margin-bottom: 6px; }
    .timeline-content p { font-size: 14px; color: var(--text-muted); }

    
    .site-footer { background-color: var(--secondary-color); color: #94a3b8; padding: 60px 20px 20px 20px; border-top: 4px solid var(--primary-color); }
    .footer-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
    .footer-brand { display: flex; flex-direction: column; gap: 20px; }
    .footer-brand .logo span { color: #ffffff; }
    .brand-desc { font-size: 14px; line-height: 1.6; }
    .footer-links h4, .footer-help h4, .footer-contact h4 { color: #ffffff; font-size: 16px; font-weight: 700; margin-bottom: 20px; }
    .footer-links ul, .footer-help ul { list-style: none; }
    .footer-links li, .footer-help li { margin-bottom: 12px; }
    .footer-links a, .footer-help a { font-size: 14px; transition: color 0.3s; }
    .footer-links a:hover, .footer-help a:hover { color: var(--primary-color); }
    .footer-contact p { font-size: 14px; margin-bottom: 10px; }
    .risk-warning { font-size: 11px; line-height: 1.4; color: #64748b; border-top: 1px solid #334155; padding-top: 15px; margin-top: 15px; }
    .footer-bottom { max-width: 1200px; margin: 0 auto; padding-top: 20px; border-top: 1px solid #334155; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 15px; font-size: 13px; }

    @media (max-width: 768px) {
      .brand-story { grid-template-columns: 1fr; gap: 30px; }
      .desktop-nav { display: none; }
      .drawer-trigger { display: flex; }
      .footer-container { grid-template-columns: 1fr; }
    }