:root {
  color-scheme: light;
  background: #fafaf8;
  color: #1b1b1b;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 16px;
  line-height: 1.55;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; }
a { color: inherit; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
.page { max-width: 760px; margin: 0 auto; padding: 24px 24px 48px; }
.site-header { margin-bottom: 42px; }
.site-header h1 { margin: 0; font-size: inherit; }
.site-header img { display: block; width: min(100%, 360px); height: auto; }
.site-header p { margin: 4px 0 0; font: 13px/1.4 'Courier New', Courier, monospace; }
h2 { margin: 0 0 14px; font-size: 24px; font-weight: normal; line-height: 1.2; }
p { margin: 0 0 16px; }
.intro { margin-bottom: 38px; }
.figures { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 28px 0 0; padding-top: 14px; border-top: 1px solid #aaa; }
.figures dt { font-size: 23px; line-height: 1.2; }
.figures dd { margin: 3px 0 0; font: 12px/1.35 'Courier New', Courier, monospace; }
.directory { padding: 20px 0; border-top: 1px solid #aaa; border-bottom: 1px solid #aaa; }
.directory h2 { margin-bottom: 10px; font: 14px/1.4 'Courier New', Courier, monospace; }
.directory ol { margin: 0; padding-left: 26px; font: 14px/1.7 'Courier New', Courier, monospace; }
.documents article { padding-top: 38px; scroll-margin-top: 24px; }
.documents article + article { margin-top: 14px; }
.rgb-diagram { max-width: 520px; margin: 28px 0 0; font: 12px/1.3 'Courier New', Courier, monospace; }
.rgb-row { display: flex; margin-bottom: 5px; }
.rgb-name { flex: 0 0 62px; padding: 7px 0; }
.swatches { display: flex; flex: 1; border: 1px solid #777; }
.swatches span { flex: 1; min-width: 0; padding: 7px 3px; border-right: 1px solid #777; text-align: center; }
.swatches span:last-child { border-right: 0; }
.red { background: #d9a9a4; }
.red-plus { background: #e7c8a6; }
.green { background: #a9c4a2; }
.green-plus { background: #c7d1a2; }
.blue { background: #9fbad0; }
.blue-plus { background: #b8b0cf; }
.rgb-diagram figcaption { margin: 9px 0 0 62px; color: #555; }
footer { margin-top: 50px; padding-top: 16px; border-top: 1px solid #aaa; font: 13px/1.4 'Courier New', Courier, monospace; }

@media (max-width: 500px) {
  .page { padding: 16px 18px 36px; }
  .site-header { margin-bottom: 32px; }
  .site-header img { width: min(100%, 320px); }
  h2 { font-size: 22px; }
  .figures { gap: 10px; }
  .figures dt { font-size: 21px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}