:root {
  --bg: #f7f7f5;
  --panel: #ffffff;
  --ink: #1c1c1c;
  --muted: #5a5a5a;
  --accent: #0a6b4f;
  --line: #e3e3de;
  --code-bg: #111827;
  --code-ink: #e5e7eb;
  --code-kw: #7dd3fc;
  --code-fn: #a5b4fc;
  --code-str: #86efac;
  --code-num: #fcd34d;
  --code-type: #f9a8d4;
  --code-cm: #6b7280;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-size: 17px;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }
header.site {
  background: var(--ink);
  color: #fff;
  padding: 36px 0 30px;
}
header.site h1 { margin: 0 0 6px; font-size: 34px; letter-spacing: -0.5px; }
header.site p.tag { margin: 0; color: #c7c7c7; font-size: 17px; }
header.site .crumb { color: #8fd8bd; font-size: 14px; margin-bottom: 8px; }
header.site .ver {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  color: var(--ink);
  background: #c7f9e5;
  border-radius: 999px;
  padding: 3px 12px;
}
nav.toc {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}
nav.toc .links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  padding: 10px 0;
  font-size: 14px;
}
nav.toc a { color: var(--accent); text-decoration: none; }
nav.toc a:hover { text-decoration: underline; }
nav.toc a.here { font-weight: 700; text-decoration: underline; }
main { padding: 40px 0 80px; }
section { margin: 0 0 46px; }
h2 {
  font-size: 26px;
  margin: 0 0 14px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--line);
  letter-spacing: -0.3px;
}
h3 { font-size: 19px; margin: 28px 0 8px; }
p { margin: 0 0 14px; }
ul, ol { margin: 0 0 14px; padding-left: 24px; }
li { margin-bottom: 6px; }
a { color: var(--accent); }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: #ececea;
  border-radius: 4px;
  padding: 1px 5px;
}
pre {
  background: var(--code-bg);
  color: var(--code-ink);
  border-radius: 8px;
  padding: 16px 18px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.55;
  margin: 0 0 16px;
}
pre code { background: none; padding: 0; font-size: inherit; }
.tok-kw  { color: var(--code-kw); }
.tok-fn  { color: var(--code-fn); }
.tok-str { color: var(--code-str); }
.tok-num { color: var(--code-num); }
.tok-type{ color: var(--code-type); }
.tok-cm  { color: var(--code-cm); font-style: italic; }
.out {
  background: #0f172a;
  border-left: 4px solid var(--accent);
  border-radius: 0 8px 8px 0;
  padding: 10px 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  color: #d1fae5;
  margin: 0 0 16px;
  overflow-x: auto;
  white-space: pre-wrap;
}
.note {
  background: #eef5ff;
  border-left: 4px solid #3b82f6;
  border-radius: 0 8px 8px 0;
  padding: 12px 16px;
  margin: 0 0 16px;
  font-size: 15px;
}
.warn {
  background: #fff7ed;
  border-left: 4px solid #f97316;
  border-radius: 0 8px 8px 0;
  padding: 12px 16px;
  margin: 0 0 16px;
  font-size: 15px;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 16px;
  font-size: 15px;
  background: var(--panel);
}
th, td {
  text-align: left;
  border: 1px solid var(--line);
  padding: 8px 12px;
  vertical-align: top;
}
th { background: #f0efeb; }
td.good { color: #15803d; font-weight: 600; }
td.bad { color: #b91c1c; font-weight: 600; }
footer.site {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  padding: 28px 0 60px;
}
.pagenav { display: flex; justify-content: space-between; margin: 40px 0 0; font-size: 15px; }
.pagenav a { text-decoration: none; font-weight: 600; }
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
  margin: 0 0 16px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
}
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card h3 a { text-decoration: none; }
.card p { margin: 0; font-size: 14px; color: var(--muted); }
@media (max-width: 600px) {
  header.site h1 { font-size: 28px; }
  body { font-size: 16px; }
}