.protocol-intro {
  margin-bottom: 40px;
}
.protocol-lede {
  color: var(--text-muted);
  font-size: 19px;
}
.protocol-chapter {
  padding-top: 20px;
  padding-bottom: 28px;
  scroll-margin-top: calc(var(--nav-h) + 24px);
}
.protocol-chapter + .protocol-chapter {
  margin-top: 48px;
  border-top: 1px solid var(--border);
}
.protocol-book .protocol-chapter > h2 {
  margin-top: 40px;
}
.protocol-book .table-scroll {
  margin-block: 28px;
}
.protocol-book .callout strong {
  display: block;
  margin-bottom: 8px;
  font-weight: var(--weight-bold);
}
@media (max-width: 640px) {
  .protocol-lede {
    font-size: 17px;
  }
  .protocol-chapter + .protocol-chapter {
    margin-top: 32px;
  }
}