/*
Minor headings never get smaller than body text: they are told apart by weight,
small caps and italics instead of size. Shared by the site (linked via headExtra)
and the ePub (appended to tosijs-ui's DEFAULT_BOOK_CSS), so every var() has a
fallback for the book, which doesn't define the site's variables.
*/

/* like h3, but lighter and in small caps */
h4 {
  font-size: calc(var(--font-size, 1em) * var(--h3-scale, 1.25));
  line-height: calc(var(--line-height, 1.5) * var(--h3-scale, 1.25));
  font-weight: 500;
  font-variant-caps: small-caps;
}

h5,
h6 {
  font-size: var(--font-size, 1em);
  line-height: var(--line-height, 1.5);
  font-weight: 600;
  font-variant-caps: small-caps;
}

h6 {
  font-style: italic;
}