body {
  margin: 0;
  background: #fff;
  color: #000;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.7;
}
header {
  border-bottom: 1px solid #eee;
  padding: 32px 24px 16px;
}
header h1 {
  margin: 0;
  font-size: 1.5rem;
}
header p {
  margin: 4px 0 0;
  color: #555;
}
nav {
  padding: 8px 24px 16px;
  border-bottom: 1px solid #eee;
}
nav a {
  margin-right: 16px;
  text-decoration: none;
  color: #333;
  font-size: 0.95rem;
}
nav a:hover {
  text-decoration: underline;
}
main {
  max-width: 900px;
  padding: 40px 24px 60px;
}
main h2 {
  margin-top: 32px;
}
pre {
  background: #f7f7f7;
  padding: 12px;
  overflow-x: auto;
  font-size: 0.9rem;
}
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
}
footer {
  border-top: 1px solid #eee;
  padding: 24px;
  font-size: 0.85rem;
  color: #555;
}
footer a {
  color: inherit;
  text-decoration: none;
}
footer a:hover {
  text-decoration: underline;
}