:root {
  --fg: #1a1a1a;
  --muted: #5a5a5a;
  --bg: #ffffff;
  --accent: #2b6cb0;
  --border: #e5e5e5;
  --max-width: 720px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header, main, footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
}

header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

header .brand {
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--fg);
}

nav a {
  margin-left: 1rem;
  color: var(--muted);
}

main h1 { font-size: 2rem; margin-top: 1rem; }
main h2 { font-size: 1.25rem; margin-top: 2rem; }
main h3 { font-size: 1rem; margin-top: 1.5rem; margin-bottom: 0.25rem; }
main p, main li { color: var(--fg); }
main .lead { font-size: 1.125rem; color: var(--muted); }
main ul ul { margin-top: 0.25rem; }

main code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: #f4f4f4;
  padding: 0.05em 0.3em;
  border-radius: 3px;
}

.table-wrap { overflow-x: auto; margin: 1rem 0; }
.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.table-wrap th, .table-wrap td {
  text-align: left;
  vertical-align: top;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
}
.table-wrap th { font-weight: 600; }

footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}