.study-explanation-reading > .editor-head {
  grid-template-columns: minmax(0, 1fr) var(--tap);
}
.study-explanation-reading > .editor-head > h2 { margin: 0; min-width: 0; }
.study-explanation-reading > .editor-head > button { width: var(--tap); height: var(--tap); padding: 0; }
.study-explanation-overlay.is-without-base .study-explanation-panel { height: auto; }
.study-explanation-body { font-size: var(--type-prose); line-height: var(--leading-prose); color: var(--resource-text); overflow-anchor: none; }
.study-bibliography { margin-block-start: 24px; padding-block-start: 12px; border-block-start: 1px solid var(--border-subtle); overflow-wrap: anywhere; }
.study-bibliography > h3 { margin-block: 0 12px; font-size: var(--type-base); font-weight: 600; }
.study-bibliography .study-citation-reference { display: flex; align-items: baseline; gap: 7px; margin-block: 0; font-size: var(--type-sm); line-height: 1.65; color: var(--text-secondary); }
.study-bibliography .study-citation-list { padding-inline-start: 1.8em; }
.study-bibliography .study-citation-list > li + li { margin-block-start: 18px; }
.study-bibliography .study-citation-link { color: inherit; text-decoration: underline; text-decoration-color: var(--border-default); text-underline-offset: .18em; }
.study-bibliography button.study-citation-link {
  appearance: none;
  display: inline-block;
  width: auto;
  height: auto;
  min-width: 0;
  min-height: var(--tap);
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: start;
  white-space: normal;
  vertical-align: baseline;
  cursor: pointer;
}
.study-bibliography .study-citation-reference .study-citation-link { flex: 1; min-width: 0; min-height: var(--tap); }
.study-citation-document { display: inline-flex; align-items: baseline; gap: 6px; min-width: 0; }
.study-bibliography .study-citation-reference > .study-citation-document { display: contents; }
.study-citation-document .study-citation-link { min-width: 0; }
.study-bibliography .study-citation-link:hover { color: var(--action-primary); text-decoration-color: currentColor; }
.study-bibliography .study-citation-link[aria-disabled="true"] { opacity: .65; cursor: wait; }
.study-citation-format { display: inline-flex; flex: 0 0 auto; margin-inline-start: 4px; color: var(--text-secondary); vertical-align: -.15em; }
.study-citation-format-icon { width: 15px; height: 15px; }
.study-bibliography .study-citation-web-link { display: inline-flex; justify-content: center; width: var(--tap); min-height: var(--tap); color: var(--text-secondary); }
.study-bibliography .study-citation-actions { gap: 4px 12px; }
.study-citation-info { color: var(--text-secondary); }
.study-citation-info > summary { display: inline-flex; align-items: center; justify-content: center; width: var(--tap); min-height: var(--tap); font-size: 18px; cursor: pointer; list-style: none; }
.study-citation-info > summary::-webkit-details-marker { display: none; }
.study-citation-info[open] { flex-basis: 100%; }
.study-citation-info > p { margin-block: 0 8px; font-size: var(--type-sm); line-height: 1.6; }
.study-citation-backlink { display: inline-flex; align-items: center; justify-content: center; width: var(--tap); min-height: var(--tap); padding: 4px 8px; background: transparent; border: 0; color: var(--action-primary); font: inherit; cursor: pointer; }
.study-bibliography .study-citation-link:focus-visible,
.study-bibliography .study-citation-web-link:focus-visible,
.study-citation-info > summary:focus-visible,
.study-citation-backlink:focus-visible, .study-bibliography [data-citation-reference-id]:focus { outline: 2px solid var(--action-primary); outline-offset: 3px; }
.study-contextual-authoring { margin-block-end: 8px; }
.study-contextual-authoring .study-mode-actions { justify-content: flex-end; }
.course-microsequence-review > .editor-body { font-size: var(--type-prose); line-height: var(--leading-prose); color: var(--resource-text); }
.course-microsequence-review .source-marker,
.course-microsequence-review .study-citation-backlink { border: 0; background: transparent; color: var(--action-primary); }
.source-marker-group { display: inline; white-space: nowrap; }
/* Citation numbers belong to prose; modal button spacing must not enter its
   line box. Expand the pointer target separately from the printed number. */
.source-marker-group > button.source-marker[data-action="open-citation"] {
  position: relative;
  top: -.3em;
  display: inline-block;
  width: auto;
  height: auto;
  min-width: 0;
  min-height: 0;
  margin: 0;
  padding: 0 .12em;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: var(--type-xs);
  line-height: 1;
  vertical-align: baseline;
}
.source-marker-group > button.source-marker[data-action="open-citation"] sup {
  position: static;
  top: auto;
  font: inherit;
  font-weight: 600;
  vertical-align: baseline;
}
.source-marker-group > button.source-marker[data-action="open-citation"]:hover {
  background: var(--action-secondary-hover);
}
.source-marker-group > button.source-marker::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  min-width: var(--tap);
  min-height: var(--tap);
  transform: translate(-50%, -50%);
}
/* Adjacent inline targets retain their own horizontal hit area. Expanding
   across another number or link would make its destination ambiguous. */
.source-marker-group:has(> .source-marker + .source-marker) > .source-marker::after,
.source-marker-group:has(+ :is(.source-marker-group, a, button, input, select, textarea, [tabindex])) > .source-marker::after,
:is(.source-marker-group, a, button, input, select, textarea, [tabindex]) + .source-marker-group > .source-marker::after {
  min-width: 0;
}
.course-microsequence-review .study-citation-actions a { color: var(--action-primary); }
.course-microsequence-review .study-bibliography > h3 { font-size: var(--type-sm); }
.course-microsequence-review .study-citation-list { padding-inline-start: 1.4em; }
.course-microsequence-review .study-citation-list > li::marker { font-size: var(--type-sm); color: var(--text-secondary); }
.course-microsequence-review .study-citation-locations { padding-inline-start: 0; font-size: var(--type-sm); color: var(--text-secondary); }
.course-microsequence-review .study-citation-actions { justify-content: flex-end; }
.course-microsequence-review .study-citation-actions > button { margin: 0; }