body {
    font-family: system-ui, sans-serif;
    max-width: 900px;
    margin: 2em auto 10em; /* bottom margin to avoid overlapping footer */
    padding: 0 1em;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
  }

  h1 {
    font-size: 1.8em;
    margin-bottom: 0.5em;
    color: #222;
  }

  h2 {
    font-size: 1.2em;
    margin-top: 1.5em;
    color: #444;
  }

  a {
    color: #0066cc;
    text-decoration: none;
  }

  a:hover {
    text-decoration: underline;
  }

  p {
    margin-bottom: 1em;
  }

  .back-link {
    margin-bottom: 2em;
    display: inline-block;
    font-size: 0.95em;
  }

  footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    text-align: center;
    padding: 1em 0;
    font-size: 0.9em;
    color: #666;
    background-color: #f5f5f5;
    border-top: 1px solid #ddd;
  }

  footer a {
    color: #0066cc;
    text-decoration: none;
  }

  footer a:hover {
    text-decoration: underline;
  }