:root {
  --theme-color: #2563eb;
  --content-max-width: 64rem;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
.markdown-section table { display: block; overflow-x: auto; }
.markdown-section .mermaid { overflow-x: auto; text-align: center; }
.document-footer { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--color-mono-2); font-size: .875rem; }