:root {
  --brand: #d52b1e;
  --ink: #16181d;
  --muted: #5b616e;
  --line: #e6e7ea;
  --wash: #f6f6f7;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font:
    16px/1.6 system-ui,
    -apple-system,
    "Segoe UI",
    sans-serif;
  color: var(--ink);
  background: #fff;
}
a {
  color: var(--brand);
}
.wrap {
  max-width: 52rem;
  margin: 0 auto;
  padding: 0 1rem;
}
.top {
  border-bottom: 1px solid var(--line);
}
.bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
}
.brand {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.mark {
  background: var(--brand);
  color: #fff;
  border-radius: 6px;
  width: 1.6rem;
  height: 1.6rem;
  display: inline-grid;
  place-items: center;
}
.lang a {
  margin-left: 0.5rem;
  text-decoration: none;
  color: var(--muted);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}
.lang a[aria-current] {
  background: var(--ink);
  color: #fff;
}
.sections {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding-bottom: 0.75rem;
  font-size: 0.95rem;
}
.sections a {
  color: var(--muted);
  text-decoration: none;
}
.doc {
  padding: 2rem 0 3rem;
}
.doc h1 {
  font-size: 2rem;
  letter-spacing: -0.01em;
  margin: 0.25rem 0 0.5rem;
}
.doc h2 {
  margin-top: 2rem;
}
.lead {
  color: var(--muted);
  font-size: 1.1rem;
}
.crumbs {
  font-size: 0.9rem;
  color: var(--muted);
}
.crumbs a {
  color: var(--muted);
}
.notice {
  background: var(--wash);
  border-left: 3px solid var(--brand);
  padding: 0.6rem 0.9rem;
  font-size: 0.95rem;
}
pre {
  background: var(--wash);
  padding: 0.8rem 1rem;
  overflow-x: auto;
  border-radius: 6px;
}
code {
  font-size: 0.92em;
}
table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
  font-size: 0.95rem;
}
th,
td {
  border-bottom: 1px solid var(--line);
  padding: 0.45rem 0.5rem;
  text-align: left;
  vertical-align: top;
}
.pages {
  list-style: none;
  padding: 0;
}
.pages li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}
.pages li span {
  display: block;
  color: var(--muted);
  font-size: 0.95rem;
}
.foot {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.9rem;
  padding: 1.5rem 1rem 2.5rem;
  border-top: 1px solid var(--line);
}