:root {
  color-scheme: light dark;
  --bg: #F4F4F4;
  --card: #FFFFFF;
  --text: #111111;
  --muted: #55575A;
  --rule: rgba(0,0,0,0.10);
  --accent: #C0392B;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0F0F0F;
    --card: #222222;
    --text: #FFFFFF;
    --muted: rgba(255,255,255,0.70);
    --rule: rgba(255,255,255,0.14);
    --accent: #F57361;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}
main { max-width: 720px; margin: 0 auto; padding: 48px 20px 96px; }
header.masthead { margin-bottom: 40px; }
.wordmark { font-weight: 700; letter-spacing: -0.01em; font-size: 20px; text-decoration: none; color: var(--text); }
h1 { font-size: 30px; line-height: 1.2; letter-spacing: -0.02em; margin: 28px 0 8px; }
h2 { font-size: 19px; margin: 44px 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 16px; margin: 26px 0 6px; }
p, li { color: var(--text); }
.lede { font-size: 18px; color: var(--muted); }
.updated { color: var(--muted); font-size: 14px; margin: 0; }
ul { padding-left: 20px; }
li { margin: 6px 0; }
a { color: var(--accent); }
.card { background: var(--card); border-radius: 16px; padding: 18px 20px; margin: 20px 0; }
.card p:first-child, .card ul:first-child { margin-top: 0; }
.card p:last-child, .card ul:last-child { margin-bottom: 0; }
table { border-collapse: collapse; width: 100%; margin: 18px 0; font-size: 15px; display: block; overflow-x: auto; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-weight: 600; white-space: nowrap; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9em; background: var(--card); padding: 1px 5px; border-radius: 5px; }
footer { margin-top: 64px; padding-top: 20px; border-top: 1px solid var(--rule); color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); }