:root {
  --bg:             #FCFBF9; /* bone-50 */
  --surface:        #EFEDE8; /* bone-200, callout */
  --text:           #1A1D26; /* ink-900 */
  --text-secondary: #2F3340; /* ink-700 */
  --text-tertiary:  #5B606E; /* ink-500 */
  --rule:           #E4E1DA; /* bone-300 */
  --brand:          #3F6651; /* forest-700 */
  --brand-strong:   #2D4A3E; /* forest-800 */
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:             #14171F;
    --surface:        #1C212B;
    --text:           #ECEEF2;
    --text-secondary: #C7CBD4;
    --text-tertiary:  #8E93A0;
    --rule:           #21262F;
    --brand:          #6B8F7B;
    --brand-strong:   #87A795;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-secondary);
  font-family: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}

a {
  color: var(--brand);
  text-decoration: underline;
  text-underline-offset: 2px;
}
a:hover { color: var(--brand-strong); }

strong { color: var(--text); font-weight: 600; }

/* ---- Header ---- */
header.doc {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 28px;
  margin-bottom: 40px;
}

.wordmark {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  text-indent: 0.34em;
  color: var(--text-tertiary);
  text-decoration: none;
  display: inline-block;
  margin: 0;
}
.wordmark:hover { color: var(--brand); }

h1 {
  font-family: "Newsreader", Georgia, serif;
  font-optical-sizing: auto;
  font-weight: 500;
  font-size: 40px;
  line-height: 1.12;
  color: var(--text);
  margin: 20px 0 8px;
  letter-spacing: -0.02em;
}

.updated {
  color: var(--text-tertiary);
  font-size: 15px;
  margin: 0;
}

h2 {
  font-family: "Newsreader", Georgia, serif;
  font-optical-sizing: auto;
  font-weight: 500;
  font-size: 25px;
  color: var(--text);
  margin: 48px 0 12px;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 17px;
  color: var(--brand-strong);
  margin: 28px 0 6px;
  font-weight: 600;
}

p { margin: 0 0 16px; }

ul { margin: 0 0 16px; padding-left: 22px; }
li { margin: 0 0 10px; }

.intro { font-size: 18px; color: var(--text-secondary); }

.callout {
  background: var(--surface);
  border-left: 3px solid var(--brand);
  border-radius: 6px;
  padding: 16px 20px;
  margin: 24px 0;
}
.callout p:last-child { margin-bottom: 0; }

footer.doc {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
  color: var(--text-tertiary);
  font-size: 14px;
}
footer.doc nav { margin-bottom: 10px; }
footer.doc nav a { margin-right: 18px; }

@media (max-width: 600px) {
  .wrap { padding: 40px 20px 72px; }
  h1 { font-size: 32px; }
  h2 { font-size: 22px; }
  body { font-size: 16px; }
}