body {
    font-family: sans-serif;
    max-width: 700px;
    margin: 2rem auto;
    padding: 0 1rem;
    background: #ffffff;
    color: #111;
    line-height: 1.6;
  }
  
  a {
    color: #0055aa;
    text-decoration: none;
  }
  
  a:hover {
    text-decoration: underline;
  }
  
  header {
    margin-bottom: 2rem;
    border-bottom: 1px solid #ddd;
  }
  
  .subtitle {
    color: #666;
    font-size: 1rem;
  }
  
  article {
    margin-bottom: 2rem;
  }
  
  footer {
    margin-top: 3rem;
    font-size: 0.9rem;
    color: #999;
    text-align: left;
  }