:root {
  --bg: #fbfaf7;
  --fg: #23211d;
  --muted: #6b665d;
  --rule: #e2ded5;
  --code-bg: #f1eee7;
  --link: #1f5fa8;
  --note-bg: #fff6dc;
  --note-rule: #e8cf86;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17181a;
    --fg: #e4e2dd;
    --muted: #9b978f;
    --rule: #2d2f33;
    --code-bg: #212327;
    --link: #8ab4f0;
    --note-bg: #2a2516;
    --note-rule: #5c4f25;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

main {
  max-width: 46rem;
  margin: 0 auto;
  padding: 3rem 1rem 4rem;
}

header h1 {
  font: 600 2rem/1.2 ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  margin: 0 0 .5rem;
}

.lede {
  font-size: 1.15rem;
  color: var(--muted);
  margin-top: 0;
}

h2 {
  font-size: 1.25rem;
  margin: 2.75rem 0 .75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
}

a { color: var(--link); }

nav {
  display: flex;
  flex-wrap: wrap;
  gap: .25rem 1rem;
  margin: 1.5rem 0 0;
  font-size: .95rem;
}

code, pre {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: .88em;
}

:not(pre) > code {
  background: var(--code-bg);
  padding: .1em .3em;
  border-radius: 3px;
}

pre {
  background: var(--code-bg);
  padding: .8rem 1rem;
  border-radius: 4px;
  overflow-x: auto;
  line-height: 1.45;
}

pre.diagram {
  background: none;
  padding-left: 0;
  font-size: .8em;
  color: var(--muted);
}

.note {
  background: var(--note-bg);
  border-left: 3px solid var(--note-rule);
  padding: .6rem .9rem;
  font-size: .95rem;
}

table {
  border-collapse: collapse;
  width: 100%;
  font-size: .93rem;
  display: block;
  overflow-x: auto;
}

th, td {
  text-align: left;
  vertical-align: top;
  padding: .45rem .6rem;
  border-bottom: 1px solid var(--rule);
}

th { font-weight: 600; }

dt { margin-top: .8rem; }
dd { margin: .2rem 0 0 1.25rem; }

footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: .9rem;
}