:root {
  color-scheme: light;
  --brand: #38a5d0;
  --brand-light: #8acbe2;
  --ink: #0f172a;
  --body: #475569;
  --muted: #94a3b8;
  --rule: #e2e8f0;
  --ground: #ffffff;
  --panel: #f8fafc;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --ink: #f1f5f9;
    --body: #cbd5e1;
    --muted: #94a3b8;
    --rule: #1e293b;
    --ground: #0b1220;
    --panel: #111a2b;
  }
}

* { box-sizing: border-box; }

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

header.masthead {
  background: linear-gradient(135deg, var(--brand-light), var(--brand));
  color: #fff;
  padding: 56px 24px 44px;
}

header.masthead .inner {
  max-width: 760px;
  margin: 0 auto;
}

header.masthead .wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: #fff;
  opacity: 0.92;
}

header.masthead .wordmark img {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.9);
}

header.masthead h1 {
  margin: 22px 0 8px;
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
}

header.masthead p.updated {
  margin: 0;
  font-size: 14px;
  opacity: 0.85;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 44px 24px 72px;
}

main > p.lede {
  font-size: 18px;
  line-height: 1.6;
  color: var(--ink);
  margin: 0 0 32px;
}

h2 {
  margin: 40px 0 12px;
  font-size: 20px;
  line-height: 1.3;
  font-weight: 650;
  color: var(--ink);
  letter-spacing: -0.01em;
}

h3 {
  margin: 26px 0 8px;
  font-size: 16px;
  font-weight: 650;
  color: var(--ink);
}

p { margin: 0 0 14px; }

ul { margin: 0 0 16px; padding-left: 22px; }
li { margin-bottom: 7px; }

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 20px;
  font-size: 15px;
  display: block;
  overflow-x: auto;
}

th, td {
  text-align: left;
  padding: 11px 14px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

th {
  color: var(--ink);
  font-weight: 650;
  white-space: nowrap;
}

.panel {
  background: var(--panel);
  border-radius: 12px;
  padding: 20px 22px;
  margin: 0 0 24px;
}

.panel h3 { margin-top: 0; }
.panel p:last-child { margin-bottom: 0; }

footer {
  border-top: 1px solid var(--rule);
  padding: 28px 24px 56px;
  font-size: 14px;
  color: var(--muted);
}

footer .inner {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  align-items: center;
}

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