:root {
  --bg: #ffffff;
  --fg: #1c2530;
  --muted: #55606e;
  --accent: #0b5fff;
  --accent-fg: #ffffff;
  --card: #f4f6f8;
  --border: #dde3ea;
  --code-bg: #eef1f4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10151b;
    --fg: #e8edf2;
    --muted: #9aa7b4;
    --accent: #4d8dff;
    --accent-fg: #0b1220;
    --card: #171e26;
    --border: #2a3440;
    --code-bg: #1d2630;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}
main { max-width: 760px; margin: 0 auto; padding: 1.5rem 1.25rem 4rem; }
header.site {
  border-bottom: 1px solid var(--border);
  padding: 0.9rem 1.25rem;
}
header.site nav {
  max-width: 760px; margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 1rem; align-items: baseline;
}
header.site .brand { font-weight: 700; text-decoration: none; color: var(--fg); }
header.site a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
header.site a:hover { color: var(--accent); }
h1 { font-size: 1.9rem; line-height: 1.25; margin: 1.6rem 0 0.4rem; }
h2 { font-size: 1.3rem; margin-top: 2.2rem; border-bottom: 1px solid var(--border); padding-bottom: 0.3rem; }
h3 { font-size: 1.05rem; margin-top: 1.6rem; }
p.lead { font-size: 1.12rem; color: var(--muted); margin-top: 0.2rem; }
a { color: var(--accent); }
code, pre {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  background: var(--code-bg);
  border-radius: 4px;
  font-size: 0.92em;
}
code { padding: 0.1em 0.35em; }
pre { padding: 0.8rem 1rem; overflow-x: auto; }
table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: 0.95rem; }
th, td { text-align: left; border: 1px solid var(--border); padding: 0.5rem 0.7rem; vertical-align: top; }
th { background: var(--card); }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  margin: 1.2rem 0;
}
.pill {
  display: inline-block;
  font-size: 0.8rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.1rem 0.7rem;
  color: var(--muted);
  margin-right: 0.4rem;
}
footer.site {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 1.2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}
footer.site a { color: var(--muted); }
.toc { font-size: 0.95rem; }
ul { padding-left: 1.3rem; }
li { margin: 0.25rem 0; }
.meta { color: var(--muted); font-size: 0.9rem; }