:root {
  color-scheme: light dark;
  --paper: #faf9f6;
  --ink: #252522;
  --muted: #61615b;
  --rule: #c5c5bb;
  --link: #254e68;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #1c1d1b;
    --ink: #e2e2d9;
    --muted: #b0b1a7;
    --rule: #4e5048;
    --link: #a6c7d8;
  }
}
* { box-sizing: border-box; }
body {
  max-width: 800px;
  margin: 0 auto;
  padding: 28px 24px;
  background: var(--paper);
  color: var(--ink);
  font: 18px/1.65 Georgia, "Times New Roman", serif;
  overflow-wrap: break-word;
}
a { color: var(--link); text-underline-offset: .16em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 2px solid currentColor; outline-offset: 4px; }
header { border-bottom: 2px solid var(--ink); padding-bottom: 16px; }
.brand { color: var(--ink); font-size: 2rem; font-weight: bold; text-decoration: none; }
.tagline { margin: 0 0 12px; color: var(--muted); }
nav { display: flex; flex-wrap: wrap; gap: 6px 22px; }
nav, .note, footer { font: 14px/1.7 system-ui, sans-serif; }
nav a[aria-current="page"] { color: var(--ink); font-weight: bold; }
main { padding-top: 18px; }
h1, h2 { line-height: 1.25; }
h1 { font-size: 1.9rem; margin: .6em 0; }
h2 { font-size: 1.3rem; margin-top: 1.6em; }
p { margin: .85em 0; }
li { margin: .45em 0; }
ol { padding-left: 1.5em; }
.note { color: var(--muted); }
footer { margin-top: 42px; padding-top: 16px; border-top: 1px solid var(--rule); color: var(--muted); }
.skip { position: absolute; left: -10000px; }
.skip:focus { position: static; }
@media (max-width: 480px) {
  body { padding: 20px 18px; font-size: 17px; }
  h1 { font-size: 1.65rem; }
}
@media print {
  :root { --paper: white; --ink: black; --muted: #444; --rule: #aaa; --link: black; }
  body { max-width: none; padding: 0; }
  nav, .skip { display: none; }
}