/* System fonts only: nothing is loaded from other hosts. */
:root {
  --bg: #fff;
  --text: #1f3b4d;
  --muted: #4d6575;
  --link: #8a4a14;
  --rule: #d6dde2;
  --code: #eef2f4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14232d;
    --text: #f1f4f6;
    --muted: #b4c3cd;
    --link: #ffb46b;
    --rule: #34505f;
    --code: #1f3441;
  }
}
body {
  margin: 0;
  padding: 0 16px;
  background: var(--bg);
  color: var(--text);
  font: 1.0625rem/1.6 system-ui, -apple-system, "Segoe UI", sans-serif;
}
header, main, footer { max-width: 42rem; margin: 0 auto; }
header { display: flex; justify-content: space-between; align-items: center; padding: 24px 0; }
img { max-width: 100%; height: auto; }
a { color: var(--link); }
h1 { font-size: 1.8rem; line-height: 1.25; }
h2 { font-size: 1.3rem; margin-top: 2rem; }
h3 { font-size: 1.1rem; }
code { background: var(--code); padding: 0 .25em; border-radius: 4px; overflow-wrap: anywhere; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 2rem 0; }
footer { border-top: 1px solid var(--rule); margin-top: 3rem; padding: 1rem 0 2rem; color: var(--muted); font-size: .95rem; }
.lead { font-size: 1.25rem; }
/* Tap targets of at least 48 px. */
a, button { display: inline-block; min-height: 48px; line-height: 48px; }
p a, li a, .lead a, code a { display: inline; min-height: 0; line-height: inherit; }
button {
  padding: 0 24px;
  font: inherit;
  font-weight: 600;
  border: 0;
  border-radius: 8px;
  background: #1f3b4d;
  color: #fff;
  cursor: pointer;
}
@media (prefers-color-scheme: dark) { button { background: #ffb46b; color: #1f3b4d; } }