:root {
  --brand: #1B6CA8;
  --ink: #0F172A;
  --soft: #4A5568;
  --line: #D8DEE6;
  --bg: #FFFFFF;
  --sunken: #F4F6F9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand: #5FAEE3; --ink: #E9EEF4; --soft: #A3AEBD;
    --line: #2C3846; --bg: #151C25; --sunken: #1E2833;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
.wrap { max-width: 720px; margin: 0 auto; padding: 0 20px; }

header.site { border-bottom: 1px solid var(--line); padding: 14px 0; }
header.site .wrap { display: flex; align-items: center; gap: 16px; }
.brand {
  display: flex; align-items: center; gap: 9px;
  font-weight: 600; color: var(--ink); text-decoration: none; font-size: 17px;
}
.brand img { width: 26px; height: 26px; border-radius: 6px; }
nav.site { margin-left: auto; display: flex; gap: 16px; }
nav.site a { color: var(--soft); text-decoration: none; font-size: 14px; }
nav.site a:hover { color: var(--brand); }

main { padding: 40px 0 64px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 6px; }
h2 { font-size: 18px; margin: 32px 0 10px; }
h3 { font-size: 15px; margin: 22px 0 8px; }
.updated { color: var(--soft); font-size: 14px; margin: 0 0 28px; }
.lede { font-size: 18px; color: var(--soft); }

table { border-collapse: collapse; width: 100%; margin: 16px 0; font-size: 14px; }
th, td { text-align: left; vertical-align: top; padding: 9px 12px 9px 0; border-top: 1px solid var(--line); }
th { font-weight: 600; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px;
       background: var(--sunken); padding: 1px 5px; border-radius: 3px; }
ul { padding-left: 20px; }
li { margin-bottom: 5px; }
a { color: var(--brand); }
.callout {
  background: var(--sunken); border-left: 3px solid var(--brand);
  padding: 14px 16px; border-radius: 0 6px 6px 0; margin: 22px 0;
}
.callout p { margin: 0; }

footer.site {
  border-top: 1px solid var(--line); padding: 22px 0 40px;
  color: var(--soft); font-size: 14px;
}
footer.site a { color: var(--soft); }