.markdown-body {
    max-width: 900px;
    margin: 0 auto;
    padding: 1rem;
    font-size: 1rem;
    line-height: 1.7;
  }
  .markdown-body h1, h2, h3, h4 {
    margin-top: 2rem;
  }
  .markdown-body pre {
    background: var(--gh-bg-alt, #f9fafb);
    padding: 1rem;
    border-radius: var(--gh-radius-sm, 10px);
    overflow-x: auto;
  }