/* Shared course surfaces only. Workspace navigation and non-course pages stay unchanged. */
:root {
  --course-card-line: #e0e6ee;
  --course-card-muted: #697586;
  --course-card-ink: #253244;
  --course-card-accent: #3973ec;
}

.courseos-app :is(.explorer-grid, .institution-card-grid, .course-system-grid,
  .institution-prep-hierarchy-grid, .institution-prep-lesson-grid, .learning-hierarchy-grid),
.learning-admin :is(.learning-hierarchy-grid, .course-directory-grid),
.learning-child .child-hierarchy-grid,
.learning-path-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 270px), 1fr));
  gap: 20px;
  align-items: stretch;
}

.courseos-app :is(.explorer-card, .institution-explorer-card, .course-system-card,
  .institution-prep-hierarchy-card, .institution-prep-lesson-card, .level-lesson-card,
  .institution-lesson-card, .learning-hierarchy-card, .learning-folder-card),
.learning-admin :is(.course-directory-card, .learning-hierarchy-card, .learning-folder-card),
.learning-child :is(.learning-hierarchy-card, .learning-folder-card),
.learning-path-card {
  min-width: 0;
  border: 1px solid var(--course-card-line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 2px 6px rgb(37 50 68 / 3%);
  overflow: hidden;
  color: var(--course-card-ink);
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.courseos-app :is(.explorer-card, .institution-explorer-card, .course-system-card,
  .institution-prep-hierarchy-card, .institution-prep-lesson-card, .level-lesson-card,
  .institution-lesson-card, .learning-hierarchy-card),
.learning-hierarchy-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.courseos-app :is(.explorer-card, .institution-explorer-card, .course-system-card,
  .institution-prep-hierarchy-card, .level-lesson-card):hover,
:is(.learning-hierarchy-card, .learning-folder-card, .learning-path-card):hover {
  transform: none;
  border-color: #a7bfea;
  box-shadow: 0 4px 12px rgb(37 50 68 / 7%);
}

.courseos-app :is(.explorer-card-main, .institution-prep-card-main, .level-lesson-open),
.learning-hierarchy-card-main, .learning-admin .course-directory-card-main {
  display: flex;
  flex-direction: column;
  width: 100%;
  flex: 1;
  min-width: 0;
  text-align: left;
}
.learning-admin .course-directory-card-main .learning-cover { width: 100%; aspect-ratio: 16 / 9; border-radius: 0; }
.learning-admin .course-directory-card-copy { width: 100%; padding: 16px; }
.learning-admin .course-directory-card-copy b { font-size: 16px; line-height: 1.5; }
.learning-admin .course-directory-card-copy small { font-size:13px; line-height: 1.5; }

/* Fixed-ratio covers prevent title, loading and hover states from resizing cards. */
.courseos-app :is(.explorer-card .explorer-cover, .institution-explorer-card .institution-explorer-cover,
  .institution-prep-hierarchy-card .institution-prep-layer-cover,
  .institution-prep-lesson-card .institution-prep-layer-cover,
  .level-lesson-cover, .institution-lesson-cover),
:is(.learning-folder-card, .learning-hierarchy-card, .learning-path-card) .learning-cover,
.learning-hierarchy-card-main > :is(img, .learning-hierarchy-placeholder),
.learning-path-card > :is(img, .learning-path-placeholder) {
  position: relative;
  width: 100%;
  height: auto !important;
  min-height: 0 !important;
  aspect-ratio: 16 / 9;
  flex: none !important;
  border-radius: 0;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  object-fit: cover;
}

.courseos-app :is(.explorer-card .explorer-cover, .institution-explorer-card .institution-explorer-cover,
  .level-lesson-cover, .institution-lesson-cover) {
  padding: 16px !important;
  justify-content: space-between;
}

.courseos-app :is(.explorer-card .explorer-cover, .institution-explorer-card .institution-explorer-cover).has-cover-image > b {
  visibility: hidden;
}

.courseos-app .course-system-card .institution-explorer-cover.has-image > :is(b, small:not(.learning-cover-type)) {
  visibility: hidden;
}

.courseos-app .course-system-card .course-system-cover-fallback {
  background-image: none !important;
  background-color: #edf1f7 !important;
  color: #4e6077 !important;
}

.courseos-app .course-system-card .course-system-cover-fallback > b {
  color: #4e6077 !important;
  text-shadow: none !important;
}

.courseos-app :is(.explorer-card-body, .institution-explorer-card-body,
  .institution-prep-hierarchy-body, .institution-prep-lesson-body,
  .level-lesson-body, .institution-lesson-card > div:last-child),
.learning-hierarchy-card-main > span:last-child,
.learning-folder-card > span,
.learning-path-card > span:last-child {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: 16px !important;
}

.courseos-app :is(.explorer-card-body, .institution-explorer-card-body,
  .institution-prep-hierarchy-body, .institution-prep-lesson-body, .level-lesson-body) :is(h3, h4),
.courseos-app .institution-lesson-card h3,
.learning-hierarchy-card-main b, .learning-folder-card b, .learning-path-card b {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0;
  overflow-wrap: anywhere;
  white-space: normal;
  color: var(--course-card-ink);
}

.courseos-app :is(.explorer-card-body, .institution-explorer-card-body,
  .institution-prep-hierarchy-body, .institution-prep-lesson-body, .level-lesson-body) p,
.courseos-app .institution-lesson-card p,
.learning-hierarchy-card-main em {
  min-height: 0;
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--course-card-muted);
  font-style: normal;
  overflow-wrap: anywhere;
}

.courseos-app :is(.explorer-card-kicker, .institution-card-kicker,
  .institution-prep-card-kicker, .level-lesson-body > span:first-child),
.learning-hierarchy-card-main small, .learning-folder-card :is(small, em),
.learning-path-card small {
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0;
  color: var(--course-card-muted);
  overflow-wrap: anywhere;
  font-style: normal;
}
.learning-hierarchy-card-main small,.learning-folder-card small,.learning-path-card small{font-size:13px}

.courseos-app :is(.explorer-meta, .institution-card-metrics,
  .institution-prep-card-metrics, .level-lesson-tags, .institution-prep-assets) {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 6px;
}

.courseos-app :is(.explorer-meta em, .institution-card-metrics em,
  .institution-prep-card-metrics span, .level-lesson-tags span, .institution-prep-assets span) {
  padding: 4px 7px;
  border-radius: 4px;
  font-size: 12px;
  line-height: 1.5;
  background: #f2f5f9;
  color: #5b6879;
  white-space: normal;
  overflow-wrap: anywhere;
}

.courseos-app :is(.explorer-card-footer, .level-lesson-actions,
  .course-system-card-actions, .institution-prep-actions, .institution-lesson-actions),
.learning-hierarchy-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding: 12px 0 0;
  border-top: 1px solid #edf0f5;
  background: transparent;
}

.courseos-app :is(.explorer-card-footer, .level-lesson-actions),
.learning-hierarchy-card-actions {
  padding: 12px 16px;
}

.courseos-app :is(.explorer-actions button, .level-lesson-actions button,
  .course-system-card-actions button, .institution-prep-actions button,
  .institution-lesson-actions button),
.learning-hierarchy-card-actions button {
  flex: 1 1 100px;
  min-width: 0;
  min-height: 36px;
  margin-top: 0 !important;
  padding: 7px 10px;
  font-size: 12px !important;
  line-height: 1.5;
  border-radius: 6px;
  overflow-wrap: anywhere;
}
.courseos-app .institution-explorer-card-body > .inst-primary {
  min-height: 36px;
  font-size: 12px !important;
  padding: 8px 12px;
  border-radius: 6px;
}
.courseos-app .course-system-card-more { flex: 1 0 100%; font-size: 12px; }
.courseos-app .course-system-card-more summary { padding: 6px 0; cursor: pointer; color: #697586; }
.courseos-app .course-system-card-more > div { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; padding-top: 8px; }
.courseos-app .course-system-card-more summary:focus-visible { outline: 2px solid #b4caf6; outline-offset: 2px; }

.courseos-app :is(.explorer-card-body .dark, .level-lesson-open-label,
  .institution-prep-card-link),
.learning-hierarchy-card-main strong {
  margin-top: auto;
  padding-top: 8px;
  font-size: 13px;
  color: var(--course-card-accent);
}

/* Card entry labels share the selected sidebar item's button treatment. */
.courseos-app .explorer-card-main .explorer-actions > span.dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 6px 10px;
  border: 1px solid var(--cos-primary);
  border-radius: 0;
  background: var(--cos-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.5;
  box-shadow: none;
  transition: background 160ms ease, border-color 160ms ease;
}

.courseos-app .explorer-card-main:hover .explorer-actions > span.dark {
  background: var(--cos-primary-strong);
  border-color: var(--cos-primary-strong);
}

.courseos-app .explorer-card-main:focus-visible .explorer-actions > span.dark {
  outline: 3px solid var(--cos-primary-soft);
  outline-offset: 3px;
}

.courseos-app :is(.course-system-breadcrumb, .institution-prep-breadcrumb,
  .learning-directory-trail), .child-directory-trail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--course-card-line);
  font-size: 13px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.courseos-app :is(.course-system-breadcrumb, .institution-prep-breadcrumb,
  .learning-directory-trail) button, .child-directory-trail button {
  min-width: 0;
  min-height: 32px;
  padding: 3px 0;
  font-size: 13px;
  color: var(--course-card-accent);
  overflow-wrap: anywhere;
}

.courseos-app :is(.course-system-toolbar, .course-system-detail-head,
  .institution-prep-toolbar, .level-workspace-main-head) {
  flex-wrap: wrap;
  gap: 12px;
}
.courseos-app .course-system-toolbar { margin-bottom: 16px; }
.courseos-app .course-system-head h2 { font-size: 26px; letter-spacing: 0; }
.courseos-app .course-system-head p { font-size: 13px; line-height: 1.6; }
.courseos-app :is(.course-system-toolbar small, .course-system-tab, .course-system-search input,
  .course-system-detail-head p, .course-system-detail-actions button) { font-size: 13px; }
.courseos-app .course-system-search { width: min(100%, 300px); min-width: 0; }
.courseos-app .course-system-search:focus-within { border-color: #9bb7ef; outline: 2px solid #dbe6fb; }
.courseos-app .course-system-notice { display: none; }
.courseos-app .course-system-status { font-size: 12px; }
.courseos-app .course-system-tabs { gap: 0; padding-bottom: 0; }
.courseos-app .course-system-tab { border: 0; border-bottom: 2px solid transparent; border-radius: 0; padding: 12px 18px; background: transparent; }
.courseos-app .course-system-tab.active { color: var(--course-card-accent); background: transparent; border-bottom-color: var(--course-card-accent); }

.courseos-app .level-workspace {
  grid-template-columns: minmax(210px, 240px) minmax(0, 1fr);
  min-height: 0;
  border-radius: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}
.courseos-app .level-workspace-units { min-width: 0; background: #fff; border-right: 1px solid var(--course-card-line); padding: 12px; }
.courseos-app .level-workspace-unit { min-width: 0; border-radius: 6px; }
.courseos-app .level-workspace-unit-copy b { font-size: 13px; white-space: normal; overflow-wrap: anywhere; }
.courseos-app .level-workspace-unit-copy :is(small, .level-workspace-unit-open) { font-size: 12px; }
.courseos-app .level-workspace-unit-copy small{font-size:13px}
.courseos-app .level-workspace-main { min-width: 0; padding: 16px 0 16px 20px; background: transparent; }
.courseos-app :is(.level-workspace-lesson-grid, .institution-lesson-grid) {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr));
  gap: 16px;
}
.courseos-app .level-workspace-main-head h3 { font-size: 20px; line-height: 1.5; overflow-wrap: anywhere; }
.courseos-app .level-workspace-main-head p { font-size: 13px; line-height: 1.6; }
.courseos-app .level-workspace-lesson-head { flex-wrap: wrap; gap: 8px; }
.courseos-app .level-workspace-lesson-head :is(b, span) { font-size: 13px; }

.learning-cover { background-color: #edf1f7; }
.learning-cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.learning-cover .learning-cover-fallback { color: #526580; font-size: 24px; }
.learning-cover .learning-cover-type {
  position: absolute !important;
  z-index: 2;
  inset: auto 12px 12px auto;
  max-width: calc(100% - 68px);
  padding: 5px 8px !important;
  background: rgb(25 35 50 / 82%) !important;
  color: #fff !important;
  border: 0;
  border-radius: 4px;
  font: 12px/1.3 "Microsoft YaHei", sans-serif !important;
  text-shadow: none;
  opacity: 1 !important;
  white-space: nowrap;
}
.child-detail-head .learning-cover .learning-cover-type,
.course-editor-cover .learning-cover .learning-cover-type,
.studio-pick .learning-cover .learning-cover-type { display: none; }
.learning-cover .learning-cover-play { width: 36px; height: 36px; z-index: 2; }
.learning-cover .course-cover-unavailable { position: absolute; top: 12px; left: 12px; padding: 4px 7px; font-size: 12px; color: #7b5833; background: #fff6e7; border-radius: 4px; }
.courseos-app .course-system-card .learning-cover:has(.course-cover-unavailable) { background-image: none !important; background-color: #edf1f7; }
.courseos-app .course-system-card .learning-cover:has(.course-cover-unavailable) > b { visibility: visible; color: #526580 !important; text-shadow: none !important; }
.learning-cover img[hidden] { display: none !important; }

.courseos-app .platform-lesson-preview-dialog { width: min(1280px, 100%); height: min(900px, calc(100dvh - 32px)); border-radius: 8px; }
.courseos-app .platform-lesson-preview-head { padding: 16px 20px; }
.courseos-app .platform-lesson-preview-head b { font-size: 18px; overflow-wrap: anywhere; }
.courseos-app .platform-lesson-preview-head small { font-size:13px; line-height: 1.5; }
.courseos-app .platform-lesson-preview-tabs { overflow-x: auto; gap: 4px; flex: none; }
.courseos-app .platform-lesson-preview-tab { min-height: 40px; font-size: 13px; white-space: nowrap; }
.courseos-app .platform-lesson-preview-body { padding: 20px; }
.courseos-app .course-system-dialog:has(.learning-document-host, .course-system-video) { width: min(1100px, 100%); }
.courseos-app .course-system-dialog { border-radius: 8px; }
.courseos-app .course-system-dialog p { font-size: 13px; line-height: 1.6; }
.courseos-app .course-system-dialog-close { flex: none; width: 36px; height: 36px; }

/* The classroom media wrapper is also the document host; its former centered
   flex alignment let the PDF screen shrink to the canvas intrinsic width. */
:root .learning-document-host { height: min(680px, 72dvh); max-height: none; background: #eef1f5; }
:root .learning-document-host:has(.learning-pdf-toolbar) { align-items: stretch; }
:root .learning-pdf-screen { width: 100%; min-width: 0; }
:root .learning-document-host:fullscreen { height: 100dvh; margin: 0; border: 0; border-radius: 0; }
.courseos-app .courseos-workbench .courseos-wb-canvas:has(.learning-document-host) { aspect-ratio: auto; min-height: 0; height: min(740px, calc(100dvh - 170px)); }
.courseos-app .courseos-workbench .courseos-wb-canvas > .learning-document-host { display: flex; align-items: stretch; width: 100%; height: 100%; min-height: 0; margin: 0; border: 0; border-radius: 0; }
.courseos-app .courseos-workbench .courseos-wb-player:fullscreen .courseos-wb-canvas:has(.learning-document-host) { height: 100%; }

@media (max-width: 900px) {
  .courseos-app .level-workspace { display: flex; flex-direction: column; }
  .courseos-app .level-workspace-units { border-right: 0; border-bottom: 1px solid var(--course-card-line); max-height: none; }
  .courseos-app .level-workspace-unit-list { display: flex; gap: 8px; overflow-x: auto; }
  .courseos-app :is(.level-workspace-unit-item, .level-workspace-unit-list > .level-workspace-unit) { flex: 0 0 200px; }
  .courseos-app .level-workspace-main { padding: 16px 0; }
}

@media (max-width: 600px) {
  .courseos-app :is(.explorer-grid, .institution-card-grid, .course-system-grid,
    .institution-prep-hierarchy-grid, .institution-prep-lesson-grid, .learning-hierarchy-grid,
    .level-workspace-lesson-grid, .institution-lesson-grid),
  .learning-admin :is(.learning-hierarchy-grid, .course-directory-grid),
  .learning-child .child-hierarchy-grid, .learning-path-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }
  .courseos-app :is(.course-system-head, .course-system-detail-head) { display: block; }
  .courseos-app .course-system-detail-actions { justify-content: flex-start; }
  .courseos-app .course-system-toolbar { display: flex; align-items: flex-start; }
  .courseos-app .course-system-search { width: 100%; margin-top: 0; }
  .courseos-app .course-system-inline-actions { flex-wrap: wrap; }
  .courseos-app .platform-lesson-preview { padding: 8px; }
  .courseos-app .platform-lesson-preview-dialog { height: calc(100dvh - 16px); }
  .courseos-app .platform-lesson-preview-body { padding: 12px; }
  .courseos-app .platform-lesson-preview-head { padding: 12px; }
  .courseos-app .platform-lesson-preview-head b { font-size: 16px; }
  :root .learning-document-host { min-height: 260px; height: 60dvh; }
}

@media (prefers-reduced-motion: reduce) {
  .learning-hierarchy-card, .learning-folder-card, .learning-path-card { transition: none; }
}
.platform-ppt-start { padding: 24px; text-align: center; color: #e8edf5; }
.platform-ppt-start b { font-size: 18px; }
.platform-ppt-start p { margin: 12px 0 20px; color: #b8c4d6; }
.platform-ppt-start button { padding: 12px 24px; border: 0; border-radius: 8px; background: #3d78f5; color: #fff; font: inherit; font-weight: 600; cursor: pointer; }
.platform-ppt-start button:hover { background: #2865e5; }
.platform-ppt-start button:focus-visible { outline: 3px solid #b8d0ff; outline-offset: 3px; }
.platform-ppt-loading:has([data-platform-ppt-poster]) { position: absolute; inset: 0; display: grid; place-items: center; }
.platform-ppt-loading[hidden] { display: none !important; }
.platform-ppt-loading > [data-platform-ppt-poster] { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: contain; }
.platform-ppt-loading > [data-platform-ppt-poster][hidden] { display: none; }
.platform-ppt-loading .platform-ppt-start { position: relative; z-index: 1; }
.platform-ppt-loading.has-poster .platform-ppt-start { position: absolute; top: 16px; right: 16px; padding: 0; }
.platform-ppt-loading.has-poster .platform-ppt-start :is(b, p) { display: none; }
.platform-ppt-loading.has-poster .platform-ppt-start button { box-shadow: 0 3px 16px #0004; }

/* COURSEOS CATALOG BRAND V1: shared headquarters / institution presentation. */
.courseos-app {
  --catalog-paper: #f7f7f2;
  --catalog-ink: #19283a;
  --catalog-muted: #69778a;
  --catalog-line: #e5e9ed;
  --catalog-accent: #3573ed;
}
.courseos-app main:has(#productOverview.active),
.courseos-app .institution-main:has(:is(#instProducts, #instLearning).active) { background: var(--catalog-paper); }
.courseos-app :is(#productOverview, #library, #instProducts, #instLearning) :is(.explorer-grid, .institution-card-grid, .course-system-grid, .learning-hierarchy-grid) {
  grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; align-items: stretch;
}
.courseos-app :is(.explorer-card, .institution-explorer-card, .course-system-card, .learning-folder-card, .learning-hierarchy-card, .institution-prep-hierarchy-card) {
  border: 1px solid var(--catalog-line); border-radius: 12px; background: #fff;
  box-shadow: 0 3px 12px rgb(25 40 58 / 3%); overflow: hidden;
}
.courseos-app :is(.explorer-card, .institution-explorer-card, .course-system-card, .learning-folder-card, .learning-hierarchy-card, .institution-prep-hierarchy-card):hover {
  border-color: #cbd5df; box-shadow: 0 8px 24px rgb(25 40 58 / 7%); transform: none;
}
.courseos-app :is(.explorer-card-body, .institution-explorer-card-body, .learning-folder-card > span, .learning-hierarchy-card-main > span:last-child) { padding: 20px !important; }
.courseos-app :is(.explorer-card-body, .institution-explorer-card-body) h3 { font-size: 19px; letter-spacing: .02em; line-height: 1.4; color: var(--catalog-ink); }
.courseos-app :is(.explorer-card-body, .institution-explorer-card-body) p { font-size: 13px; line-height: 1.7; color: var(--catalog-muted); }
.courseos-app :is(.institution-explorer-head, .explorer-head, .course-system-head) h2 { font-size: 25px; color: var(--catalog-ink); }
.courseos-app #productOverview .platform-preview-head { margin-bottom: 18px; align-items: center; }
.courseos-app #productOverview .platform-preview-head h2 { font-size: 30px; letter-spacing: -.02em; color: var(--catalog-ink); }
.courseos-app #productOverview .platform-preview-head .eyebrow { display: none; }
.courseos-app #productOverview .platform-preview-head p { margin-top: 9px; color: var(--catalog-muted); }
.courseos-app #productOverview .platform-preview-intro { background: transparent; border: 0; padding: 0 0 20px; margin: 0; color: var(--catalog-muted); }
.courseos-app #productOverview .platform-preview-intro > b,
.courseos-app #productOverview .platform-preview-intro > p { display: none; }
.courseos-app #productOverview [data-platform-catalog-count] { display: flex; align-items: center; gap: 8px; margin: 0; font-size: 12px; }
.courseos-app #productOverview [data-platform-catalog-count]::before { content: ''; width: 7px; height: 7px; flex: none; border-radius: 50%; background: #53a58c; }
.courseos-app #productOverview .catalog-subject-root > .institution-explorer-head { display: none; }
.courseos-app :is(.platform-catalog-search, .course-system-search) { background: #fff; border-color: #dce2e9; border-radius: 10px; box-shadow: none; }
.courseos-app .platform-catalog-search { width: min(360px, 38%); }
.courseos-app .platform-catalog-search input { font-size: 14px; }
.courseos-app .catalog-subject-card { cursor: pointer; }
.courseos-app .catalog-subject-card .catalog-subject-cover {
  aspect-ratio: 16 / 9; height: auto !important; min-height: 0 !important; padding: 0 !important;
  background-size: cover; background-position: center; background-color: #efe9df;
}
.courseos-app .catalog-subject-cover > :is(b, small:not(.learning-cover-type), .learning-cover-fallback) { display: none !important; }
.courseos-app .catalog-subject-cover > img { display: block; width: 100%; height: 100%; position: absolute; inset: 0; object-fit: cover; }
.courseos-app .catalog-subject-card :is(.explorer-card-kicker, .institution-card-kicker) { display: none; }
.courseos-app .catalog-subject-card :is(.explorer-card-body, .institution-explorer-card-body) { gap: 7px; }
.courseos-app .catalog-subject-card p { min-height: 22px; margin: 0 0 6px; }
.courseos-app .catalog-subject-footer {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  width: 100%; margin-top: auto; padding-top: 14px; border-top: 1px solid #edf0f2;
}
.courseos-app .catalog-subject-footer > em { font-size: 12px; font-style: normal; color: var(--catalog-muted); white-space: nowrap; }
.courseos-app .catalog-subject-link,
.courseos-app .catalog-subject-footer .course-system-card-actions .inst-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 3px 0; width: auto; min-height: 30px; margin: 0; border: 0;
  background: transparent !important; box-shadow: none !important; border-radius: 4px;
  color: var(--catalog-accent) !important; font: inherit; font-size: 13px; font-weight: 600;
  cursor: pointer; white-space: nowrap;
}
.courseos-app .catalog-subject-link:hover,
.courseos-app .catalog-subject-footer .course-system-card-actions .inst-primary:hover { color: #2458b6 !important; text-decoration: underline; text-underline-offset: 4px; }
.courseos-app .catalog-subject-footer .course-system-card-actions { margin: 0; padding: 0; background: transparent; border: 0; flex: none; }
.courseos-app .catalog-subject-footer .course-system-card-actions button { flex: none; }
.courseos-app :is(.explorer-card-main, .catalog-subject-link, .catalog-subject-footer button, .learning-folder-card):focus-visible { outline: 3px solid #81a5ed; outline-offset: -3px; }
.courseos-app .catalog-subject-card .explorer-card-footer { background: #fbfcfc; padding: 10px 18px; border-top: 1px solid #edf0f2; }
.courseos-app .catalog-subject-card .explorer-card-footer button { font-size: 12px; }
.courseos-app .course-system-card:not(.catalog-subject-card) .course-system-card-actions { padding-top: 12px; margin-top: auto; background: transparent; }
.courseos-app .course-system-head { margin-bottom: 24px; }
.courseos-app .course-system-head h2 { letter-spacing: -.02em; }
.courseos-app .learning-folder-card > span > em:last-child { color: var(--catalog-accent); font-weight: 600; }
@media (max-width: 1100px) {
  .courseos-app :is(#productOverview, #library, #instProducts, #instLearning) :is(.explorer-grid, .institution-card-grid, .course-system-grid, .learning-hierarchy-grid) { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
}
@media (max-width: 640px) {
  .courseos-app :is(#productOverview, #library, #instProducts, #instLearning) :is(.explorer-grid, .institution-card-grid, .course-system-grid, .learning-hierarchy-grid) { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .courseos-app #productOverview .platform-preview-head { display: block; }
  .courseos-app #productOverview .platform-preview-head h2 { font-size: 25px; }
  .courseos-app .platform-catalog-search { width: 100%; margin-top: 16px; }
  .courseos-app :is(.explorer-card-body, .institution-explorer-card-body) { padding: 18px !important; }
}

/* HIERARCHY COVER V1 — shared headquarters, institution and learner affordances */
.learning-cover .learning-cover-play {position:absolute!important;left:50%!important;top:50%!important;bottom:auto!important;right:auto!important;transform:translate(-50%,-50%);display:grid!important;place-items:center;width:52px!important;height:52px!important;border:1px solid rgb(255 255 255 / 86%);border-radius:50%;background:rgb(23 36 44 / 62%);color:#fff;font-size:21px;line-height:1;z-index:3;box-shadow:0 4px 18px #182b3830;pointer-events:none;}
.learning-cover .learning-cover-duration {position:absolute!important;z-index:3;left:12px;bottom:12px;padding:5px 8px!important;border-radius:4px;background:rgb(25 35 50 / 82%);color:#fff!important;font:12px/1.3 Arial,sans-serif!important;}
.learning-cover .learning-cover-type {display:block!important;pointer-events:none;}
.learning-cover:has(.learning-cover-play) img {filter:brightness(.97);}
.learning-path-card .learning-cover {width:100%;aspect-ratio:16 / 9;overflow:hidden;}
@media(max-width:600px){.learning-cover .learning-cover-play{width:44px!important;height:44px!important;font-size:18px;}}

.courseos-app :is(.institution-explorer-cover,.entity-cover,.row-cover,.level-workspace-unit-cover,.level-workspace-lesson-cover)[data-cover-title] > :is(b,small) {visibility:hidden;}
.courseos-app .institution-prep-layer-cover.has-custom-cover > :is(b,small) {visibility:hidden;}

.courseos-app .institution-lesson-cover[data-cover-title] > :is(b,small), .courseos-app .level-workspace-unit-cover[data-cover-title] > span {visibility:hidden;}