body {
    margin: 0;
    padding: 0;
    background: #ffffff;
    color: #222222;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    line-height: 1.6;
  }

  header {
    background: #0f3d2e;
    color: #ffffff;
    padding: 20px 20px;
  }

  header h1 {
    margin: 0;
    font-size: 1.6rem;
  }

  header p {
    margin: 6px 0 0;
    font-size: 0.9rem;
    color: #cfe8d8;
  }

  .container {
    max-width: 800px;
    margin: 0 auto;
    padding: 30px 20px 60px;
  }

  .intro {
    margin-bottom: 30px;
  }

  /* h2 {
    color: #0f3d2e;
    font-size: 1.15rem;
    border-bottom: 2px solid #0f3d2e;
    padding-bottom: 6px;
    margin-top: 36px;
    margin-bottom: 12px;
  } */

  p {
    margin: 0 0 12px;
  }

  ul {
    margin: 0 0 12px;
    padding-left: 22px;
  }

  li {
    margin-bottom: 6px;
  }

  a {
    color: #0f3d2e;
  }

  .toc {
    background: #f2f7f4;
    border: 1px solid #cfe8d8;
    padding: 16px 20px;
    margin-bottom: 30px;
  }

  .toc p {
    margin: 0 0 8px;
    font-weight: bold;
    color: #0f3d2e;
  }

  .toc ol {
    margin: 0;
    padding-left: 20px;
  }

  .toc li {
    margin-bottom: 4px;
  }

  footer {
    text-align: center;
    padding: 20px;
    font-size: 0.85rem;
    color: #666666;
    border-top: 1px solid #e0e0e0;
  }