:root {
  --bg: #ffffff;
  --fg: #1a1d21;
  --muted: #5c636b;
  --rule: #e3e6ea;
  --accent: #1b6b4a;
  --accent-bg: #f0f7f3;
  --code-bg: #f5f6f8;
  --warn-bg: #fff8e6;
  --warn-rule: #e8c86a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171a;
    --fg: #e6e9ec;
    --muted: #9aa2ab;
    --rule: #2a2f35;
    --accent: #5fc79a;
    --accent-bg: #172520;
    --code-bg: #1c2126;
    --warn-bg: #2a2413;
    --warn-rule: #6b5a24;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 46rem;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 6rem;
}

header.site {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1.5rem;
  margin-bottom: 2.5rem;
}

.brand {
  font-weight: 650;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--fg);
}

.brand span { color: var(--accent); }

.tagline {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.3rem;
}

h1 {
  font-size: 1.9rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  margin: 2.5rem 0 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
}

h2:first-of-type { border-top: none; padding-top: 0; }

h3 { font-size: 1rem; margin: 1.5rem 0 0.5rem; }

p, li { color: var(--fg); }

.meta {
  color: var(--muted);
  font-size: 0.875rem;
  margin: 0 0 2rem;
}

ul, ol { padding-left: 1.25rem; }
li { margin: 0.4rem 0; }

a { color: var(--accent); }

code {
  background: var(--code-bg);
  border-radius: 4px;
  padding: 0.15em 0.4em;
  font-size: 0.875em;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  word-break: break-all;
}

.card {
  background: var(--accent-bg);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 1.25rem 1.4rem;
  margin: 1.5rem 0;
}

.card p:last-child, .card ul:last-child { margin-bottom: 0; }
.card p:first-child { margin-top: 0; }

.notice {
  background: var(--warn-bg);
  border: 1px solid var(--warn-rule);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.925rem;
}

dl.kv { margin: 1.5rem 0; }
dl.kv dt { font-weight: 600; margin-top: 1rem; font-size: 0.95rem; }
dl.kv dd { margin: 0.2rem 0 0; color: var(--muted); }

nav.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-top: 1.75rem;
  font-size: 0.925rem;
}

footer.site {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.85rem;
}

footer.site a { color: var(--muted); }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.925rem;
  display: block;
  overflow-x: auto;
}

th, td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

th { font-weight: 600; white-space: nowrap; }