:root {
  --ink: #0f172a;
  --muted: #475569;
  --line: #cbd5e1;
  --link: #1d4ed8;
  --bg: #f8fafc;
  --card: #ffffff;
}
* { box-sizing: border-box; }
html { color-scheme: light; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
}
.wrap { max-width: 44rem; margin: 0 auto; padding: 0 1.25rem 3rem; }
header {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.75rem;
}
.brand {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem 0 0.75rem;
}
.brand a.home { color: var(--ink); font-weight: 700; text-decoration: none; }
nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.1rem;
  padding: 0 0 1rem;
  font-size: 0.9rem;
}
nav a { color: var(--link); }
h1 { font-size: 1.65rem; line-height: 1.25; margin: 0 0 0.5rem; }
h2 { font-size: 1.12rem; margin: 1.6rem 0 0.5rem; }
p, li { color: var(--ink); }
.lede, .meta { color: var(--muted); font-size: 0.95rem; }
ol, ul { padding-left: 1.2rem; }
li { margin: 0.35rem 0; }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; background: var(--card); }
th, td { border: 1px solid var(--line); padding: 0.45rem 0.55rem; text-align: left; vertical-align: top; }
th { background: #eef2ff; }
a { color: var(--link); }
code { font-size: 0.9em; background: #e2e8f0; padding: 0.05rem 0.3rem; border-radius: 0.25rem; }
footer {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}
.note {
  background: #eef2ff;
  border: 1px solid #c7d2fe;
  border-radius: 0.6rem;
  padding: 0.85rem 1rem;
  font-size: 0.92rem;
}