.mod-heading .heading {
  margin-block: 0;
}
.mod-heading .hgroup:has(.icon) .heading {
  display: inline-block;
  margin-inline-start: 0.1em;
}
.mod-heading .icon svg {
  width: auto;
  height: 1em;
}
.mod-heading button {
  display: inline-flex;
  align-items: center;
  border: none;
  padding: 0;
  background: transparent;
  font: inherit;
  color: inherit;
  cursor: pointer;
}
.mod-heading button span {
  text-decoration: underline dotted;
}
.mod-heading button svg {
  width: 0.8em;
  fill: currentColor;
}
.mod-heading span:has(> [popover]) {
  position: relative;
}
.mod-heading [popover] {
  position: absolute;
  transform: translateX(-50%);
  margin: 1rem 0 0 0;
  padding: 0;
  border: none;
  background: transparent;
}
@supports (top: anchor(top)) {
  .mod-heading [popover] {
    transform: translateX(-50%);
  }
}
.mod-heading [popover] span {
  display: block;
  border-radius: var(--border-radius-sm);
  padding: 0.5em;
  background: var(--color-white);
  font-size: 1.6rem;
  font-weight: 400;
}