:root {
  --page-measure: 82ch;
}

.page-head {
  margin: 6px 0 22px;
}

.page-title {
  font-family: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  line-height: 1.15;
  margin: 0;
}

.page-subtitle {
  font-family: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  color: var(--muted);
  margin: 8px 0 0;
  max-width: 70ch;
}

.page-body {
  max-width: var(--page-measure);
}

.page-body > :first-child {
  margin-top: 0;
}

.page-body h2,
.page-body h3 {
  font-family: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  margin: 22px 0 10px;
}

.page-body h2 {
  font-size: 1.16rem;
}

.page-body h3 {
  font-size: 1.02rem;
}

.page-body h4 {
  font-family: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  font-size: 0.84rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 18px 0 8px;
}

.page-body blockquote {
  margin: 14px 0 18px;
  padding: 10px 14px;
  border-left: 3px solid var(--border);
  background: rgba(15, 109, 95, 0.04);
  color: var(--muted);
}

.page-body blockquote p {
  margin: 0;
}

.page-body ul {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: grid;
  gap: 0;
}

.page-body ul > li {
  padding: 10px 0;
  border-top: 1px solid rgba(230, 224, 217, 0.8);
}

.page-body ul > li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-body ul ul {
  list-style: disc;
  padding-left: 1.2rem;
  display: block;
}

.page-body ul ul > li {
  border-top: 0;
  padding: 2px 0;
}

.page-body small {
  display: block;
  color: var(--muted);
  font-size: 0.86rem;
}

.error-details {
  margin-top: 18px;
}

.error-note {
  margin-top: 0;
}