body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  line-height: 1.6;
  color: #1f2933;
  background: #f8fafc;
}
h1 { font-size: 1.5rem; }
h2 {
  font-size: 1.15rem;
  margin-top: 2rem;
  border-bottom: 1px solid #e2e8f0;
  padding-bottom: 0.25rem;
}
a { color: #0369a1; }
code {
  background: #e2e8f0;
  padding: 0.15em 0.4em;
  border-radius: 4px;
  color: black;
  font-size: 1em;
}
pre {
  background: #0f172a;
  color: #e2e8f0;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.9rem;
}
pre code { background: none; padding: 0; color: inherit; }
table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
  font-size: 0.95rem;
}
th, td {
  border: 1px solid #e2e8f0;
  padding: 0.4rem 0.6rem;
  text-align: left;
  vertical-align: top;
}
th { background: #e2e8f0; }
.note {
  background: #fffbeb;
  border-left: 4px solid #f59e0b;
  padding: 0.5rem 0.75rem;
  margin: 1rem 0;
  border-radius: 0 4px 4px 0;
  font-size: 0.95rem;
}
footer {
  margin-top: 3rem;
  font-size: 0.85rem;
  color: #64748b;
}