:root {
    --text-color: #111;
    --muted-color: #666;
    --bg-color: #ffffff;
    --max-width: 900px;
  }
  
  * {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    padding: 2rem 1rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
      Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.65;
  }
  
  main {
    max-width: var(--max-width);
    margin: 0 auto;
  }
  
  h1 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 0.5rem;
  }
  
  h2 {
    font-size: 1.35rem;
    margin-top: 2.2rem;
    margin-bottom: 0.5rem;
  }
  
  p {
    margin: 0.5rem 0 1rem;
  }
  
  ul {
    margin: 0.5rem 0 1rem 1.2rem;
    padding: 0;
  }
  
  li {
    margin-bottom: 0.4rem;
  }
  
  a {
    color: inherit;
    text-decoration: underline;
  }
  
  .meta {
    text-align: center;
    font-size: 0.9rem;
    color: var(--muted-color);
    margin-bottom: 2.5rem;
  }
  
  footer {
    margin-top: 3rem;
    font-size: 0.85rem;
    color: var(--muted-color);
    text-align: center;
  }