:root {
  --fg: #1a1d21;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #2563eb;
  --bg: #ffffff;
  --code-bg: #f6f7f9;
  --ok: #16a34a;
  --warn: #d97706;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e8eaed;
    --muted: #9aa0a6;
    --line: #2a2e33;
    --accent: #7aa2f7;
    --bg: #16181c;
    --code-bg: #1e2126;
    --ok: #4ade80;
    --warn: #fbbf24;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 0 1.25rem;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 52rem; margin: 0 auto; }

header.site {
  padding: 2.5rem 0 1.25rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 2.25rem;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

header.site .brand {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--fg);
}

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

header.site nav { margin-left: auto; }

header.site nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.925rem;
  margin-left: 1.4rem;
}

header.site nav a:hover,
header.site nav a.active { color: var(--accent); }

h1 {
  font-size: 1.55rem;
  line-height: 1.4;
  letter-spacing: -0.015em;
  margin: 0 0 0.5rem;
  font-weight: 600;
}

h2 {
  font-size: 1.08rem;
  margin: 2.4rem 0 0.9rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1.05rem; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.lead { color: var(--muted); font-size: 1rem; }

.banner {
  padding: 0.7rem 1rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--ok);
  border-radius: 4px;
  background: var(--code-bg);
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 2rem;
}

.banner b { color: var(--fg); font-weight: 600; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 1rem 0 1.5rem;
}

th {
  text-align: left;
  font-weight: 600;
  font-size: 0.83rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.5rem 0.75rem 0.5rem 0;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

td {
  padding: 0.7rem 0.75rem 0.7rem 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

td.name { font-weight: 500; white-space: nowrap; }

.dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ok);
  margin-right: 0.45rem;
  vertical-align: middle;
}

.dot.warn { background: var(--warn); }

code {
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.88em;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  word-break: break-all;
}

pre {
  background: var(--code-bg);
  padding: 1rem 1.15rem;
  border-radius: 6px;
  overflow-x: auto;
  border: 1px solid var(--line);
  font-size: 0.85rem;
  line-height: 1.6;
}

pre code { background: none; padding: 0; font-size: inherit; word-break: normal; }

hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}

.card {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1rem 1.15rem;
}

.card .k { font-size: 0.8rem; color: var(--muted); }

.card .v { font-size: 1.3rem; font-weight: 600; letter-spacing: -0.02em; }

footer.site {
  margin-top: 3.5rem;
  padding: 1.5rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}

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