body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-color: #fafafa;
      color: #333;
    }
    .hero {
      background: linear-gradient(135deg, #1e3c72, #2a5298);
      color: white;
      padding: 3rem 0;
    }
    .hero h1 {
      font-weight: 700;
    }
    .article-content {
      background: white;
      border-radius: 10px;
      box-shadow: 0 0 20px rgba(0,0,0,0.05);
      padding: 2.5rem;
      margin-top: -2rem;
      position: relative;
    }
    .highlight-box {
      background-color: #f8f9fa;
      border-left: 4px solid #2a5298;
      padding: 1.2rem;
      margin: 2rem 0;
    }
    .check-list li {
      margin-bottom: 0.6rem;
    }
    footer {
      margin-top: 4rem;
      padding: 2rem 0;
      background-color: #f1f5f9;
      text-align: center;
      font-size: 0.9rem;
      color: #666;
    }