:root {
  --bg: #ffffff;
  --surface: #f5f6f8;
  --text: #1c1c1e;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #0f8afd;
  --accent-weak: rgba(15, 138, 253, 0.1);
  --radius: 14px;
  --maxw: 760px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0f12;
    --surface: #16191e;
    --text: #f2f3f5;
    --muted: #9aa2ad;
    --border: #262b32;
    --accent: #4aa8ff;
    --accent-weak: rgba(74, 168, 255, 0.14);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 32px 20px 96px;
}

header.site {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

header.site .wrap {
  padding: 20px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  text-decoration: none;
}

.brand .mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, #34c1fc, #0273fc);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 18px;
  flex: none;
}

nav.site a {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  margin-left: 18px;
}

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

h1 {
  font-size: 30px;
  line-height: 1.2;
  margin: 8px 0 4px;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 21px;
  margin: 40px 0 10px;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 17px;
  margin: 24px 0 6px;
}

.updated {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 8px;
}

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

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

.lead {
  font-size: 18px;
  color: var(--text);
}

ul, ol { padding-left: 22px; }
li { margin: 6px 0; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 18px 0;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 15px;
  display: block;
  overflow-x: auto;
}

th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th { color: var(--muted); font-weight: 600; white-space: nowrap; }

code {
  background: var(--accent-weak);
  color: var(--accent);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 0.9em;
}

.pill {
  display: inline-block;
  background: var(--accent-weak);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
}

footer.site {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}

footer.site .wrap {
  padding: 24px 20px 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: space-between;
}

footer.site a { color: var(--muted); text-decoration: none; }
footer.site a:hover { color: var(--accent); }

.home-hero { text-align: center; padding-top: 24px; }
.home-hero .mark-lg {
  width: 76px; height: 76px; border-radius: 18px;
  background: linear-gradient(135deg, #34c1fc, #0273fc);
  display: inline-grid; place-items: center; color: #fff;
  font-size: 40px; margin-bottom: 16px;
}
.home-links {
  display: grid; gap: 12px; grid-template-columns: 1fr 1fr;
  margin: 28px 0;
}
.home-links a {
  display: block; text-decoration: none; text-align: left;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px 20px; color: var(--text);
}
.home-links a:hover { border-color: var(--accent); }
.home-links .t { font-weight: 700; font-size: 16px; }
.home-links .d { color: var(--muted); font-size: 14px; margin-top: 2px; }
@media (max-width: 520px) { .home-links { grid-template-columns: 1fr; } }