:root {
      --primary: rgb(108,92,231);
      --primary-hover: #5848d3;
      --glacier-blue: #1D7BFF;
      --deep-sea-ink: #0A1128;
      --silver-white: #F4F7FC;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --bg-light: #F8FAFC;
      --transition: all 0.3s ease;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, sans-serif;
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.6;
    }

    a { text-decoration: none; color: inherit; transition: var(--transition); }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

    
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 100;
      background: var(--deep-sea-ink);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      height: 80px;
    }

    .header-container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
    .logo { display: inline-flex; align-items: center; gap: 12px; }
    .logo img { height: 40px; width: auto; object-fit: contain; }
    .logo span { font-size: 20px; font-weight: 800; color: #FFF; }
    .nav-menu { display: flex; align-items: center; gap: 32px; }
    .nav-menu a { color: rgba(255, 255, 255, 0.8); font-size: 15px; font-weight: 500; }
    .nav-menu a:hover { color: var(--glacier-blue); }

    
    .menu-toggle { display: none; flex-direction: column; gap: 6px; background: none; border: none; cursor: pointer; }
    .menu-toggle span { display: block; width: 24px; height: 2px; background-color: #FFF; }

    
    .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(10, 17, 40, 0.6); z-index: 1000; opacity: 0; visibility: hidden; transition: var(--transition); }
    .drawer-overlay.active { opacity: 1; visibility: visible; }
    .drawer { position: fixed; top: 0; left: -320px; width: 300px; height: 100%; background-color: var(--deep-sea-ink); z-index: 1001; padding: 40px 24px; display: flex; flex-direction: column; gap: 40px; transition: left 0.4s ease; }
    .drawer.active { left: 0; }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; }
    .drawer-close { background: none; border: none; font-size: 28px; color: #FFF; cursor: pointer; }
    .drawer-menu { display: flex; flex-direction: column; gap: 20px; }
    .drawer-menu a { color: #FFF; font-size: 16px; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }

    
    .breadcrumbs-wrap {
      background-color: #FFF;
      border-bottom: 1px solid var(--border-color);
      padding: 16px 0;
      margin-top: 80px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .breadcrumbs-wrap a:hover { color: var(--primary); }

    
    .about-banner {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
      color: #FFF;
      padding: 80px 0;
      text-align: center;
    }
    .about-banner h1 { font-size: 36px; font-weight: 800; margin-bottom: 16px; }
    .about-banner p { font-size: 16px; opacity: 0.9; max-width: 700px; margin: 0 auto; }

    
    .about-section { padding: 80px 0; background-color: #FFF; }
    .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
    .about-text h2 { font-size: 28px; font-weight: 800; color: var(--deep-sea-ink); margin-bottom: 20px; }
    .about-text p { font-size: 15px; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
    
    .about-visual {
      background: var(--silver-white);
      border-radius: 16px;
      padding: 40px;
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .about-card {
      background: #FFF;
      padding: 20px;
      border-radius: 10px;
      box-shadow: 0 4px 12px rgba(0,0,0,0.02);
      display: flex;
      gap: 16px;
      align-items: center;
    }
    .about-card-icon {
      font-size: 28px;
      width: 52px;
      height: 52px;
      background-color: rgba(108,92,231,0.08);
      color: var(--primary);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .about-card-title { font-size: 16px; font-weight: 700; color: var(--deep-sea-ink); margin-bottom: 4px; }
    .about-card-desc { font-size: 13px; color: var(--text-muted); }

    
    .footer { background-color: #0F172A; color: #94A3B8; padding: 80px 0 40px; border-top: 1px solid #1E293B; margin-top: 60px; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 60px; }
    .footer-col-brand { display: flex; flex-direction: column; gap: 20px; }
    .footer .logo span { color: #FFF; }
    .footer-brand-desc { font-size: 14px; line-height: 1.7; }
    .footer-title { font-size: 16px; font-weight: 700; color: #F8FAFC; margin-bottom: 24px; }
    .footer-links { list-style: none; display: flex; flex-direction: column; gap: 14px; }
    .footer-links a { font-size: 14px; color: #94A3B8; }
    .footer-links a:hover { color: var(--glacier-blue); padding-left: 4px; }
    .footer-bottom { border-top: 1px solid #1E293B; padding-top: 40px; display: flex; align-items: center; justify-content: space-between; font-size: 13px; }

    @media (max-width: 768px) {
      .menu-toggle { display: flex; }
      .nav-menu { display: none; }
      .about-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }