body {
  counter-reset: section subsection fig tbl footnote cite;
}

a[data-ref='sec'],
a[data-ref='subsec'],
a[data-ref='fig'],
a[data-ref='tbl'],
a[data-ref='cite'] {
  text-decoration: none;
  color: inherit;
  margin: 0 0.15em;
}

a[data-ref='sec']::before {
  content: '§' target-counter(attr(href), section);
}

a[data-ref='subsec']::before {
  content: '§' target-counter(attr(href), section) '.'
    target-counter(attr(href url), subsection);
}

a[data-ref='fig']::before {
  content: 'Fig. ' target-counter(attr(href), fig);
  :root:lang(ja) & {
    content: '図' target-counter(attr(href), fig);
  }
}

a[data-ref='tbl']::before {
  content: 'Table ' target-counter(attr(href), tbl);
  :root:lang(ja) & {
    content: '表' target-counter(attr(href), fig);
  }
}

a[data-ref='cite']::before {
  content: '[' target-counter(attr(href), cite) ']';
}

section {
  counter-increment: section;
  counter-reset: subsection;
  article {
    counter-increment: subsection;
  }
}

figure.fig {
  counter-increment: fig;
  figcaption::before {
    content: 'Fig. ' counter(fig) ': ';
    :root:lang(ja) & {
      content: '図' counter(fig) ': ';
    }
  }
}

figure.tbl {
  counter-increment: tbl;
  figcaption::before {
    content: 'Table ' counter(tbl) ': ';
    :root:lang(ja) & {
      content: '表' counter(tbl) ': ';
    }
  }
}

.footnote {
  counter-increment: footnote;
  &::footnote-call,
  &::footnote-marker {
    content: '[' counter(footnote) ']';
  }

  &::footnote-call {
    font-size: 80%;
    margin: 0 0.3rem;
  }

  &::footnote-marker {
    margin-right: 0.2rem;
  }
}

ol.cite-items {
  padding-left: 2rem;
  list-style: none;

  li {
    counter-increment: cite;
    position: relative;
    &::before {
      content: '[' counter(cite) '] ';
      position: absolute;
      left: -2rem;
    }
  }
}