:root {
  --ink: #1a1a1a;
  --muted: #5a5a5a;
  --rule: #e2e2e2;
  --bg: #ffffff;
  --accent: #1a5fb4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e8e8e8;
    --muted: #a0a0a0;
    --rule: #333333;
    --bg: #161616;
    --accent: #7aa8e8;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  padding: 3rem 1.25rem 5rem;
  max-width: 44rem;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

h1 { font-size: 1.75rem; line-height: 1.25; margin: 0 0 .35rem; }
h2 { font-size: 1.15rem; margin: 2.5rem 0 .6rem; padding-top: 1.25rem; border-top: 1px solid var(--rule); }
h3 { font-size: 1rem; margin: 1.5rem 0 .4rem; }

.updated { color: var(--muted); font-size: .9rem; margin: 0 0 2rem; }
.lede { font-size: 1.05rem; }
a { color: var(--accent); }

ul { padding-left: 1.25rem; }
li { margin: .35rem 0; }

table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: .95rem; }
th, td { text-align: left; padding: .55rem .6rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-weight: 600; }

.callout {
  border-left: 3px solid var(--accent);
  padding: .75rem 1rem;
  margin: 1.5rem 0;
  background: color-mix(in srgb, var(--accent) 7%, transparent);
}

.callout p { margin: .35rem 0; }

footer { margin-top: 3.5rem; padding-top: 1.25rem; border-top: 1px solid var(--rule); color: var(--muted); font-size: .9rem; }

@media (max-width: 480px) {
  body { padding: 2rem 1rem 4rem; }
  table { font-size: .88rem; }
}