:root {
  color-scheme: light;
  --ink: #242522;
  --muted: #6d706a;
  --line: #dedfd8;
  --paper: #f7f7f3;
  --card: #ffffff;
  --accent: #98613f;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}
a { color: var(--accent); text-underline-offset: .18em; }
a:hover { color: #70442b; }
:focus-visible { outline: 3px solid #c9875b; outline-offset: 3px; }
.skip-link {
  position: absolute;
  left: -9999px;
  top: 1rem;
  z-index: 2;
  padding: .45rem .75rem;
  background: var(--ink);
  color: #fff;
}
.skip-link:focus { left: 1rem; }
.wrap { width: min(calc(100% - 2rem), 58rem); margin-inline: auto; }
.site-header { border-bottom: 1px solid var(--line); background: rgba(247,247,243,.94); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 4.5rem;
}
.brand { color: var(--ink); font-weight: 700; letter-spacing: .02em; text-decoration: none; }
.brand span { color: var(--accent); font-weight: 500; }
nav { display: flex; flex-wrap: wrap; gap: 1rem; }
nav a { color: var(--muted); font-size: .92rem; text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--ink); }
main { padding-block: clamp(3rem, 8vw, 6rem); }
.intro { max-width: 44rem; padding-bottom: 2.5rem; }
.kicker, .section-label {
  margin: 0;
  color: var(--accent);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
h1, h2, h3 { line-height: 1.2; }
h1 { text-wrap: balance; max-width: 38rem; margin: .55rem 0 1rem; font-size: clamp(2.3rem, 7vw, 4.6rem); letter-spacing: -.04em; }
h2 { margin: .35rem 0 .75rem; font-size: clamp(1.45rem, 3vw, 2rem); }
h3 { margin: 0; font-size: 1.05rem; }
p { margin: 0 0 1rem; }
.lede { max-width: 42rem; color: var(--muted); font-size: 1.16rem; }
.release-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
  align-items: end;
  margin-bottom: 4rem;
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--card);
}
.release-panel h2 { margin-bottom: .2rem; }
.release-panel p:last-child { margin: 0; color: var(--muted); }
.facts { display: flex; gap: 1.5rem; margin: 0; }
.facts div { min-width: 5rem; }
.facts dt { color: var(--muted); font-size: .8rem; }
.facts dd { margin: .15rem 0 0; font-weight: 700; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.section-heading h2 { margin-bottom: 0; }
.text-link { font-size: .9rem; }
.resource-list { border-top: 1px solid var(--line); }
.resource { display: flex; justify-content: space-between; gap: 1rem; padding: 1.15rem .25rem; border-bottom: 1px solid var(--line); }
.resource p { margin: .25rem 0 0; color: var(--muted); font-size: .93rem; }
.resource code { align-self: start; padding: .1rem .35rem; border: 1px solid var(--line); border-radius: .3rem; color: var(--muted); font-size: .72rem; }
.note { margin-top: 1rem; color: var(--muted); font-size: .9rem; }
.next-card { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-top: 4rem; }
.next-card a { display: grid; gap: .35rem; padding: 1.2rem; border: 1px solid var(--line); border-radius: .8rem; background: var(--card); text-decoration: none; }
.next-card a:hover { border-color: var(--accent); }
.next-card span { color: var(--muted); font-size: .82rem; }
.next-card strong { color: var(--ink); }
.content { max-width: 48rem; }
.back-link { display: inline-block; margin-bottom: 3rem; font-size: .9rem; }
.content h1 { font-size: clamp(2.2rem, 6vw, 3.8rem); }
.content section { margin-top: 3.2rem; }
.steps { padding-left: 1.25rem; }
.steps li { padding: .25rem 0 .25rem .35rem; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: .65rem; background: var(--card); }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { padding: .7rem .8rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
thead th { color: var(--muted); font-size: .8rem; font-weight: 600; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
pre { overflow-x: auto; margin: 1rem 0 0; padding: 1rem; border-radius: .65rem; background: #242522; color: #f4f3ee; font-size: .82rem; line-height: 1.55; }
pre code { white-space: pre; }
.closing-link { margin-top: 3.2rem; font-weight: 700; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; }
footer p { margin: 0; padding-block: 1.35rem; }
@media (max-width: 680px) {
  .header-inner { align-items: flex-start; flex-direction: column; justify-content: center; padding-block: 1rem; }
  nav { gap: .75rem 1rem; }
  .release-panel { grid-template-columns: 1fr; align-items: start; }
  .facts { gap: 1.25rem; }
  .section-heading { align-items: start; flex-direction: column; }
  .next-card { grid-template-columns: 1fr; }
  .resource { align-items: start; }
}