:root {
  --ink: #1A1D23;
  --ink-soft: #6B7280;
  --paper: #FAFAFA;
  --surface: #FFFFFF;
  --surface-2: #F2F4F8;
  --line: #E8EAED;
  --sky: #5B8BFF;
  --bloom: #F28FAD;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 16px; letter-spacing: -.01em;
  text-decoration: none; color: var(--ink);
}
.brand img { width: 26px; height: 26px; border-radius: 8px; }
.nav-links { display: flex; gap: 20px; font-size: 14px; }
.nav-links a { color: var(--ink-soft); text-decoration: none; }
.nav-links a:hover { color: var(--ink); }

main { max-width: 760px; margin: 0 auto; padding: 56px 24px 72px; }

h1 { font-size: 34px; line-height: 1.2; letter-spacing: -.02em; margin: 0 0 10px; }
.updated { color: var(--ink-soft); font-size: 14px; margin: 0 0 40px; }
h2 {
  font-size: 21px; letter-spacing: -.01em;
  margin: 44px 0 12px; padding-top: 22px;
  border-top: 1px solid var(--line);
}
h2:first-of-type { border-top: 0; padding-top: 0; }
h3 { font-size: 16.5px; margin: 26px 0 8px; }
p { margin: 0 0 14px; }
ul { margin: 0 0 16px; padding-left: 22px; }
li { margin-bottom: 7px; }
a { color: var(--sky); }
strong { font-weight: 600; }

.lede {
  background: var(--surface); border: 1px solid var(--line);
  border-left: 3px solid var(--sky); border-radius: 12px;
  padding: 18px 20px; margin: 0 0 36px;
}
.lede p:last-child { margin-bottom: 0; }

.callout {
  background: var(--surface-2); border: 1px solid var(--line);
  border-radius: 12px; padding: 18px 20px; margin: 22px 0;
}
.callout p:last-child { margin-bottom: 0; }
.callout.warn { border-left: 3px solid var(--bloom); background: var(--surface); }

table { width: 100%; border-collapse: collapse; margin: 18px 0 22px; font-size: 15px; }
th, td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; background: var(--surface-2); }
.table-wrap { overflow-x: auto; }

footer {
  border-top: 1px solid var(--line);
  padding: 28px 24px; text-align: center;
  color: var(--ink-soft); font-size: 13px;
}
footer a { color: var(--ink-soft); }

@media (max-width: 560px) {
  main { padding: 36px 20px 56px; }
  h1 { font-size: 27px; }
}