:root {
  --bg: #fbf8f6;
  --text: #24212b;
  --muted: #6b6775;
  --accent: #d9542f;
  --rule: #e8e1dc;
  --code: #f1ebe7;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a24;
    --text: #eeedef;
    --muted: #a09bad;
    --accent: #ff8f66;
    --rule: #302c3a;
    --code: #262431;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  -webkit-text-size-adjust: 100%;
}
main { max-width: 640px; margin: 0 auto; padding: 48px 16px 64px; }
h1 { font-size: 34px; line-height: 1.15; margin: 0 0 8px; }
h2 { font-size: 22px; margin: 40px 0 8px; }
h3 { font-size: 17px; margin: 24px 0 4px; }
p, ul { margin: 0 0 12px; }
ul { padding-left: 20px; }
li { margin-bottom: 8px; }
.lead { color: var(--muted); font-size: 19px; }
a { color: var(--accent); }
code, pre { font: 14px/1.5 ui-monospace, "SF Mono", Menlo, monospace; background: var(--code); border-radius: 6px; }
code { padding: 2px 5px; }
pre { padding: 12px 14px; overflow-x: auto; margin: 0 0 12px; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--rule); color: var(--muted); font-size: 15px; }