/* ============================================================
   [MOD-174-03, MOD-174-24, MOD-174-25] Education accordion navigation,
   AI discovery and one-click mobile in-place playback
============================================================ */

.mod17403-intro {
  padding-top: 112px;
  padding-bottom: 48px;
}

.mod17403-intro h1 {
  max-width: 820px;
  font-size: clamp(2.2rem, 4.2vw, 4.25rem);
}

.mod17403-intro-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 18px;
  border: 1px solid #dbeafe;
  border-radius: 28px;
  background: rgba(255, 255, 255, .9);
  box-shadow: 0 20px 52px rgba(30, 64, 175, .09);
}

.mod17403-intro-stats div {
  min-width: 0;
  padding: 20px 10px;
  border-radius: 18px;
  background: linear-gradient(145deg, #eff6ff, #f5f3ff);
  text-align: center;
}

.mod17403-intro-stats strong,
.mod17403-intro-stats span {
  display: block;
}

.mod17403-intro-stats strong {
  color: #2563eb;
  font-size: 1.65rem;
  font-weight: 1000;
}

.mod17403-intro-stats span {
  margin-top: 6px;
  color: #475569;
  font-size: .78rem;
  font-weight: 800;
}

.mod17403-education-center {
  padding: 42px 0 76px;
  background: linear-gradient(180deg, #f8fbff 0%, #fff 100%);
  scroll-margin-top: 72px;
}

.mod17403-education-center.is-focused-view {
  padding-top: 104px;
}

.mod17403-explorer {
  display: grid;
  grid-template-columns: minmax(220px, 248px) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.mod17403-sidebar {
  position: sticky;
  top: 84px;
  z-index: 5;
  display: grid;
  max-height: calc(100vh - 100px);
  gap: 14px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: #bfdbfe transparent;
}

.mod17403-sidebar-card {
  overflow: hidden;
  border: 1px solid #dbeafe;
  border-radius: 18px;
  background: rgba(255, 255, 255, .98);
  box-shadow: 0 12px 34px rgba(30, 64, 175, .06);
}

.mod17403-sidebar-card > h2 {
  margin: 0;
  padding: 15px 16px;
  border-bottom: 1px solid #e5edfa;
  color: #1e3a8a;
  font-size: .84rem;
  font-weight: 950;
}

.mod17403-category-nav {
  padding: 7px;
}

.mod17403-all-link,
.mod17403-category-row,
.mod17403-format-summary a {
  min-height: 46px;
}

.mod17403-all-link,
.mod17403-category-link,
.mod17403-course-panel a,
.mod17403-format-summary a {
  color: #27364f;
  text-decoration: none;
}

.mod17403-all-link,
.mod17403-category-link,
.mod17403-format-summary a {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 11px;
  padding: 10px 11px;
  border-radius: 12px;
  font-size: .9rem;
  font-weight: 800;
  transition: color .18s ease, background-color .18s ease;
}

.mod17403-all-link > i,
.mod17403-category-link > i,
.mod17403-format-summary a > i {
  flex: 0 0 auto;
  color: #526aa4;
  font-size: .96rem;
}

.mod17403-all-link > span,
.mod17403-category-link > span,
.mod17403-format-summary a > span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mod17403-all-link > strong,
.mod17403-format-summary a > strong {
  margin-left: auto;
  color: #2563eb;
  font-size: .74rem;
}

.mod17403-all-link:hover,
.mod17403-all-link.is-current,
.mod17403-category-group.is-selected > .mod17403-category-row,
.mod17403-format-summary a:hover,
.mod17403-format-summary a.is-current {
  color: #1d4ed8;
  background: linear-gradient(90deg, #eff6ff, #f3f0ff);
}

.mod17403-all-link.is-current > i,
.mod17403-category-group.is-selected .mod17403-category-link > i,
.mod17403-format-summary a.is-current > i {
  color: #6d5dfc;
}

.mod17403-category-group + .mod17403-category-group {
  margin-top: 2px;
}

.mod17403-category-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 38px;
  border-radius: 12px;
}

.mod17403-category-link {
  border-radius: 12px 0 0 12px;
}

.mod17403-accordion-toggle {
  display: inline-grid;
  width: 38px;
  border: 0;
  border-radius: 0 12px 12px 0;
  place-items: center;
  color: #64748b;
  background: transparent;
}

.mod17403-accordion-toggle i {
  transition: transform .18s ease;
}

.mod17403-category-group.is-open .mod17403-accordion-toggle i {
  transform: rotate(90deg);
}

.mod17403-category-row:hover,
.mod17403-category-row:focus-within {
  background: #eff6ff;
}

.mod17403-course-panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .18s ease, opacity .18s ease;
}

.mod17403-category-group.is-open .mod17403-course-panel {
  max-height: 440px;
  padding: 4px 4px 7px 25px;
  opacity: 1;
}

.mod17403-course-panel a {
  position: relative;
  display: flex;
  min-height: 38px;
  align-items: center;
  gap: 8px;
  padding: 8px 9px 8px 15px;
  border-radius: 10px;
  font-size: .81rem;
  font-weight: 700;
}

.mod17403-course-panel a::before {
  content: "";
  position: absolute;
  left: 3px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #94a3b8;
}

.mod17403-course-panel a > span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mod17403-course-panel a > strong {
  margin-left: auto;
  color: #64748b;
  font-size: .7rem;
}

.mod17403-course-panel a:hover,
.mod17403-course-panel a.is-current {
  color: #4f46e5;
  background: #f5f3ff;
}

.mod17403-course-panel a.is-current::before {
  left: 1px;
  width: 3px;
  height: 21px;
  border-radius: 4px;
  background: #6d5dfc;
}

.mod17403-course-panel p {
  margin: 0;
  padding: 10px;
  color: #64748b;
  font-size: .76rem;
  line-height: 1.5;
}

.mod17403-format-summary {
  padding-bottom: 7px;
}

.mod17403-format-summary a {
  margin: 3px 7px;
}

.mod17403-mobile-menu-button,
.mod17403-sidebar-mobile-head,
.mod17403-sidebar-backdrop {
  display: none;
}

.mod17403-content {
  min-width: 0;
  padding: 24px;
  border: 1px solid #dbeafe;
  border-radius: 20px;
  background: rgba(255, 255, 255, .98);
  box-shadow: 0 16px 44px rgba(30, 64, 175, .07);
}

.mod17403-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 20px;
  color: #64748b;
  font-size: .8rem;
  font-weight: 700;
}

.mod17403-breadcrumb a {
  color: #52627b;
  text-decoration: none;
}

.mod17403-breadcrumb a:hover {
  color: #2563eb;
}

.mod17403-breadcrumb i {
  font-size: .62rem;
}

.mod17403-ai-hero,
.mod17403-content-heading {
  position: relative;
  display: flex;
  min-height: 164px;
  align-items: center;
  gap: 22px;
  overflow: hidden;
  padding: 26px;
  border: 1px solid #dbeafe;
  border-radius: 22px;
  background:
    radial-gradient(circle at 85% 20%, rgba(124, 58, 237, .17), transparent 32%),
    linear-gradient(135deg, #fff 0%, #f5f8ff 62%, #f5f3ff 100%);
}

.mod17403-ai-icon,
.mod17403-heading-icon {
  position: relative;
  display: grid;
  width: 84px;
  height: 84px;
  flex: 0 0 84px;
  border-radius: 24px;
  place-items: center;
  color: #fff;
  background: linear-gradient(145deg, #4f7cff, #7c3aed);
  box-shadow: 0 18px 38px rgba(99, 102, 241, .28);
}

.mod17403-ai-icon i,
.mod17403-heading-icon i {
  font-size: 2.3rem;
}

.mod17403-ai-icon span {
  position: absolute;
  font-size: 1.12rem;
  font-weight: 1000;
}

.mod17403-heading-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.mod17403-heading-row h2,
.mod17403-content-heading h2 {
  margin: 0;
  color: #0f1e3b;
  font-size: clamp(1.65rem, 2.7vw, 2.3rem);
  font-weight: 1000;
  letter-spacing: -.045em;
}

.mod17403-heading-row > span,
.mod17403-content-heading > div:last-child > span {
  display: inline-flex;
  margin-top: 9px;
  padding: 6px 10px;
  border-radius: 999px;
  color: #2563eb;
  background: #eaf3ff;
  font-size: .74rem;
  font-weight: 900;
}

.mod17403-ai-hero p,
.mod17403-content-heading p {
  max-width: 700px;
  margin: 9px 0 0;
  color: #475569;
  font-size: .95rem;
  line-height: 1.75;
  font-weight: 650;
}

.mod17403-ai-hero time {
  display: inline-block;
  margin-top: 8px;
  color: #64748b;
  font-size: .76rem;
  font-weight: 750;
}

.mod17403-ai-network {
  position: absolute;
  right: 28px;
  display: flex;
  gap: 18px;
  color: rgba(99, 102, 241, .14);
  font-size: 4.5rem;
  pointer-events: none;
}

.mod17403-course-section {
  margin-top: 24px;
}

.mod17403-section-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-end;
  margin-bottom: 13px;
}

.mod17403-section-heading h2,
.mod17403-section-heading p {
  margin: 0;
}

.mod17403-section-heading h2 {
  font-size: 1.18rem;
  font-weight: 950;
}

.mod17403-section-heading p {
  color: #64748b;
  font-size: .82rem;
}

.mod17403-course-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 13px;
}

.mod17403-course-card {
  display: flex;
  min-width: 0;
  min-height: 220px;
  flex-direction: column;
  padding: 19px;
  border: 1px solid #dce6f7;
  border-radius: 17px;
  color: #0f1e3b;
  background: #fff;
  text-decoration: none;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.mod17403-course-card:hover {
  border-color: #a5b4fc;
  color: #0f1e3b;
  transform: translateY(-3px);
  box-shadow: 0 18px 36px rgba(79, 70, 229, .1);
}

.mod17403-course-card > i {
  display: grid;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  place-items: center;
  color: #6d5dfc;
  background: linear-gradient(145deg, #eef2ff, #f5f3ff);
  font-size: 1.35rem;
}

.mod17403-course-card h3 {
  margin: 15px 0 7px;
  font-size: 1rem;
  font-weight: 950;
}

.mod17403-course-card p {
  margin: 0;
  color: #475569;
  font-size: .81rem;
  line-height: 1.65;
}

.mod17403-course-card footer {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 16px;
  color: #64748b;
  font-size: .72rem;
}

.mod17403-course-card footer strong {
  color: #334155;
}

.mod17403-results {
  margin-top: 28px;
}

.mod17403-results-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-end;
  margin-bottom: 16px;
}

.mod17403-results-heading span {
  color: #2563eb;
  font-size: .7rem;
  font-weight: 950;
  letter-spacing: .1em;
}

.mod17403-results-heading h2 {
  margin: 5px 0 0;
  color: #0f1e3b;
  font-size: 1.28rem;
  font-weight: 1000;
}

.mod17403-library-tools {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) auto minmax(108px, auto);
  gap: 9px;
  padding: 13px;
  border: 1px solid #dbeafe;
  border-radius: 16px;
  background: #f8fbff;
}

.mod17403-search {
  position: relative;
  min-width: 0;
}

.mod17403-search i {
  position: absolute;
  left: 14px;
  top: 50%;
  color: #526aa4;
  transform: translateY(-50%);
}

.mod17403-search input,
.mod17403-sort select {
  width: 100%;
  min-height: 43px;
  border: 1px solid #cbdaf1;
  border-radius: 11px;
  color: #27364f;
  background: #fff;
  font-size: .84rem;
  font-weight: 650;
}

.mod17403-search input {
  padding: 9px 13px 9px 40px;
}

.mod17403-sort select {
  padding: 8px 32px 8px 11px;
}

.mod17403-search-submit {
  min-width: 64px;
  border-radius: 11px;
  font-size: .84rem;
  font-weight: 850;
}

.mod17403-type-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 12px 0 16px;
}

.mod17403-type-filters a {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  border: 1px solid #d3def0;
  border-radius: 10px;
  color: #475569;
  background: #fff;
  font-size: .8rem;
  font-weight: 850;
  text-decoration: none;
}

.mod17403-type-filters a:hover,
.mod17403-type-filters a.is-current {
  border-color: #3974ff;
  color: #fff;
  background: linear-gradient(135deg, #3974ff, #4f46e5);
}

.mod17403-active-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
  margin: -4px 0 15px;
  color: #475569;
  font-size: .77rem;
}

.mod17403-active-filter span {
  padding: 5px 8px;
  border-radius: 8px;
  background: #eff6ff;
}

.mod17403-active-filter a {
  color: #2563eb;
  font-weight: 800;
}

.mod17403-lecture-list {
  overflow: hidden;
  border: 1px solid #dce6f3;
  border-radius: 17px;
}

.mod17403-lecture-card {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  min-width: 0;
  padding: 12px;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.mod17403-lecture-card + .mod17403-lecture-card {
  border-top: 1px solid #e2e8f0;
}

.mod17403-lecture-card:target {
  background: #f5f8ff;
  box-shadow: inset 3px 0 #6366f1;
}

.mod17403-thumbnail {
  position: relative;
  width: 160px;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 11px;
  background: #eaf1fb;
}

.mod17403-thumbnail img,
.mod17403-thumbnail-placeholder {
  width: 100%;
  height: 100%;
}

.mod17403-thumbnail img {
  position: relative;
  z-index: 1;
  display: block;
  object-fit: cover;
}

.mod17403-thumbnail-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  color: #4f46e5;
  background: linear-gradient(145deg, #eff6ff, #f5f3ff);
}

.mod17403-thumbnail-placeholder.is-image-fallback {
  display: none;
}

.mod17403-thumbnail.has-image-error .mod17403-thumbnail-placeholder.is-image-fallback {
  display: flex;
}

.mod17403-thumbnail-placeholder i {
  font-size: 1.65rem;
}

.mod17403-thumbnail-placeholder span {
  font-size: .68rem;
  font-weight: 900;
}

.mod17424-thumbnail-play {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  border-radius: inherit;
  place-items: center;
  cursor: pointer;
  appearance: none;
  background: transparent;
  touch-action: manipulation;
}

.mod17424-thumbnail-play-indicator {
  display: grid;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  place-items: center;
  color: #fff;
  background: rgba(15, 23, 42, .72);
  box-shadow: 0 8px 22px rgba(15, 23, 42, .28);
  pointer-events: none;
  transition: transform .18s ease, background-color .18s ease;
}

.mod17424-thumbnail-play:hover .mod17424-thumbnail-play-indicator,
.mod17424-thumbnail-play:focus-visible .mod17424-thumbnail-play-indicator {
  transform: scale(1.08);
  background: rgba(37, 99, 235, .9);
}

.mod17424-thumbnail-play[aria-expanded="true"] .mod17424-thumbnail-play-indicator {
  background: rgba(220, 38, 38, .88);
}

.mod17403-thumbnail .mod17424-thumbnail-play:focus-visible {
  outline: 3px solid rgba(37, 99, 235, .58);
  outline-offset: -3px;
}

.mod17403-duration {
  position: absolute;
  z-index: 3;
  right: 6px;
  bottom: 6px;
  padding: 3px 6px;
  border-radius: 5px;
  color: #fff;
  background: rgba(15, 23, 42, .82);
  font-size: .65rem;
  font-weight: 800;
  pointer-events: none;
}

.mod17403-sequence {
  display: grid;
  width: 31px;
  height: 31px;
  border-radius: 50%;
  place-items: center;
  color: #2563eb;
  background: #eaf1ff;
  font-size: .72rem;
  font-weight: 950;
}

.mod17403-lecture-body {
  min-width: 0;
}

.mod17403-location {
  display: flex;
  gap: 5px;
  align-items: center;
  color: #637495;
  font-size: .69rem;
  font-weight: 800;
}

.mod17403-location i {
  font-size: .52rem;
}

.mod17403-lecture-body h3 {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  color: #17233d;
  font-size: 1rem;
  line-height: 1.4;
  font-weight: 950;
  overflow-wrap: anywhere;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.mod17403-lecture-body > p {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  color: #59677d;
  font-size: .78rem;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.mod17403-summary {
  display: flex;
  gap: 6px;
  margin-top: 6px;
  color: #59677d;
  font-size: .72rem;
}

.mod17403-summary strong {
  flex: 0 0 auto;
  color: #4f46e5;
}

.mod17403-summary span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mod17403-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 7px;
}

.mod17403-keywords span {
  padding: 4px 7px;
  border-radius: 999px;
  color: #4f46e5;
  background: #eef2ff;
  font-size: .67rem;
  font-weight: 800;
}

.mod201-video-card-content {
  min-width: 0;
}

.mod201-video-card-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
}

.mod201-video-compact-meta {
  display: flex !important;
  flex-wrap: wrap;
  gap: 4px 12px;
  margin: 8px 0 0 !important;
  overflow: visible !important;
  color: #64748b !important;
  font-size: .78rem !important;
  line-height: 1.45 !important;
  -webkit-line-clamp: initial !important;
}

.mod201-video-compact-meta span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.mod201-video-compact-meta i {
  color: #4f46e5;
}

.mod201-video-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
}

.mod201-video-detail {
  margin-top: 8px;
  border-top: 1px solid #edf2f7;
}

.mod201-video-detail > summary {
  width: max-content;
  min-height: 32px;
  padding: 7px 2px;
  color: #2563eb;
  cursor: pointer;
  font-size: .76rem;
  font-weight: 850;
  list-style-position: inside;
}

.mod201-video-detail > summary:hover {
  color: #1d4ed8;
  text-decoration: underline;
}

.mod201-video-detail-panel {
  display: none;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 3px;
  padding: 14px;
  border: 1px solid #dbeafe;
  border-radius: 12px;
  color: #475569;
  background: #f8fbff;
  font-size: .8rem;
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.mod201-video-detail[open] > .mod201-video-detail-panel {
  display: grid;
}

.mod201-video-detail-panel section {
  min-width: 0;
}

.mod201-video-detail-panel h4,
.mod201-video-detail-panel p,
.mod201-video-detail-panel ul,
.mod201-video-detail-panel dl,
.mod201-video-detail-panel dd {
  margin: 0;
}

.mod201-video-detail-panel h4 {
  margin-bottom: 4px;
  color: #1e3a8a;
  font-size: .76rem;
  font-weight: 900;
}

.mod201-video-detail-panel ul {
  padding-left: 18px;
}

.mod201-video-detail-panel dl div + div {
  margin-top: 5px;
}

.mod201-video-detail-panel dt {
  color: #334155;
  font-weight: 850;
}

.mod17403-lecture-meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  justify-items: end;
  color: #64748b;
  font-size: .73rem;
  font-weight: 750;
}

.mod17403-lecture-meta > span {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  color: #334155;
}

.mod17403-lecture-meta > span i {
  color: #4f46e5;
}

.mod17403-play-button {
  display: inline-flex;
  min-width: 94px;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1px solid #b9cdf7;
  border-radius: 999px;
  color: #2563eb;
  background: #fff;
  font-size: .75rem;
  font-weight: 900;
}

.mod17403-play-button:hover,
.mod17403-play-button[aria-expanded="true"] {
  border-color: #3b66e8;
  color: #fff;
  background: #3b66e8;
}

.mod17403-player,
.mod17403-document-content {
  grid-column: 1 / -1;
  overflow: hidden;
  margin-top: 2px;
  border: 1px solid #dbeafe;
  border-radius: 13px;
  background: #f8fafc;
}

.mod17403-player {
  border: 0;
  background: transparent;
  opacity: 1;
  transform: translateY(0);
  transition: opacity .2s ease, transform .2s ease;
}

.mod17403-player.is-entering {
  opacity: 0;
  transform: translateY(5px);
}

.mod17425-player-shell {
  min-width: 0;
  overflow: hidden;
  border: 1px solid #dbeafe;
  border-radius: 14px;
  background: #0f172a;
  box-shadow: 0 14px 32px rgba(15, 23, 42, .16);
}

.mod17425-mobile-player-toolbar {
  display: none;
}

.mod17403-player-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #07152f;
}

.mod17403-player-frame iframe,
.mod17403-player-frame video {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: #07152f;
  object-fit: contain;
  opacity: 0;
  transition: opacity .2s ease;
}

.mod17425-player-shell.is-ready iframe,
.mod17425-player-shell.is-ready video {
  opacity: 1;
}

.mod17425-player-loading {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  gap: 10px;
  place-content: center;
  padding: 20px;
  color: #e2e8f0;
  background: #0f172a;
  text-align: center;
  pointer-events: none;
  opacity: 1;
  visibility: visible;
  transition: opacity .2s ease, visibility .2s ease, background-color .2s ease;
}

.mod17425-player-shell.is-ready .mod17425-player-loading {
  opacity: 0;
  visibility: hidden;
}

.mod17425-player-shell.is-delayed .mod17425-player-loading {
  background: rgba(15, 23, 42, .78);
}

.mod17425-player-shell.is-error .mod17425-player-spinner {
  display: none;
}

.mod17425-player-loading strong,
.mod17425-player-loading-help {
  display: block;
}

.mod17425-player-loading strong {
  font-size: .86rem;
}

.mod17425-player-loading-help {
  max-width: 480px;
  color: #bfdbfe;
  font-size: .74rem;
  line-height: 1.5;
}

.mod17425-player-spinner {
  width: 30px;
  height: 30px;
  margin-inline: auto;
  border: 3px solid rgba(255, 255, 255, .25);
  border-top-color: #fff;
  border-radius: 50%;
  animation: mod17425-spin .8s linear infinite;
}

@keyframes mod17425-spin {
  to { transform: rotate(360deg); }
}

.mod17403-player-fallback {
  display: block;
  padding: 10px 14px;
  color: #dbeafe;
  font-size: .75rem;
  text-align: center;
}

.mod17425-autoplay-notice {
  margin: 0;
  padding: 10px 14px;
  color: #fef3c7;
  background: #1e293b;
  font-size: .75rem;
  line-height: 1.5;
  text-align: center;
}

.mod17403-player-error,
.mod17403-document-content {
  padding: 18px;
  color: #334155;
  font-size: .84rem;
  line-height: 1.75;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.mod17403-player-error {
  margin: 0;
  text-align: center;
}

.mod17403-empty {
  display: grid;
  min-height: 270px;
  justify-items: center;
  align-content: center;
  gap: 8px;
  padding: 35px 20px;
  border: 1px dashed #a7bde5;
  border-radius: 18px;
  color: #64748b;
  background: #f8fbff;
  text-align: center;
}

.mod17403-empty > i {
  color: #5b6fed;
  font-size: 2.6rem;
}

.mod17403-empty h3,
.mod17403-empty p {
  margin: 0;
}

.mod17403-empty h3 {
  color: #27364f;
  font-size: 1.08rem;
  font-weight: 950;
}

.mod17403-empty p {
  font-size: .84rem;
}

.mod17403-education-center a:focus-visible,
.mod17403-education-center button:focus-visible,
.mod17403-education-center input:focus-visible,
.mod17403-education-center select:focus-visible {
  outline: 3px solid rgba(37, 99, 235, .35);
  outline-offset: 2px;
}

.mod17403-cta {
  padding-top: 46px;
}

@media (max-width: 1199.98px) {
  .mod17403-course-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .mod17403-course-card {
    min-height: 190px;
  }

  .mod17403-lecture-card {
    grid-template-columns: 152px minmax(0, 1fr);
  }

  .mod17403-thumbnail {
    width: 152px;
  }
}

@media (max-width: 991.98px) {
  .mod17403-intro {
    padding-top: 100px;
  }

  .mod17403-explorer {
    display: block;
  }

  .mod17403-mobile-menu-button {
    display: grid;
    width: 100%;
    min-height: 54px;
    grid-template-columns: auto auto minmax(0, 1fr);
    gap: 9px;
    align-items: center;
    margin-bottom: 13px;
    padding: 10px 14px;
    border: 1px solid #bfdbfe;
    border-radius: 15px;
    color: #1e3a8a;
    background: #fff;
    box-shadow: 0 10px 28px rgba(30, 64, 175, .07);
    text-align: left;
  }

  .mod17403-mobile-menu-button span {
    font-weight: 900;
  }

  .mod17403-mobile-menu-button strong {
    min-width: 0;
    overflow: hidden;
    color: #64748b;
    font-size: .77rem;
    text-align: right;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .mod17403-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 1055;
    display: block;
    width: min(310px, calc(100vw - 42px));
    max-height: none;
    padding: 12px;
    overflow-y: auto;
    background: #f6f9ff;
    box-shadow: 18px 0 50px rgba(15, 23, 42, .2);
    transform: translateX(-105%);
    transition: transform .18s ease;
  }

  .mod17403-sidebar.is-mobile-open {
    transform: translateX(0);
  }

  .mod17403-sidebar-mobile-head {
    display: flex;
    min-height: 48px;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding: 0 4px 0 8px;
    color: #17233d;
  }

  .mod17403-sidebar-mobile-head button {
    display: grid;
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 50%;
    place-items: center;
    color: #334155;
    background: #fff;
  }

  .mod17403-sidebar-backdrop:not([hidden]) {
    position: fixed;
    inset: 0;
    z-index: 1050;
    display: block;
    background: rgba(15, 23, 42, .45);
  }

  body.mod17403-menu-open {
    overflow: hidden;
  }

  .mod17403-content {
    padding: 20px;
  }
}

@media (max-width: 767.98px) {
  .mod17403-intro {
    padding-top: 92px;
    padding-bottom: 38px;
  }

  .mod17403-intro h1 {
    font-size: 2.35rem;
  }

  .mod17403-intro-stats {
    padding: 12px;
    border-radius: 20px;
  }

  .mod17403-intro-stats div {
    padding: 15px 6px;
  }

  .mod17403-intro-stats strong {
    font-size: 1.3rem;
  }

  .mod17403-education-center {
    padding: 32px 0 50px;
  }

  .mod17403-education-center.is-focused-view {
    padding-top: 88px;
  }

  .mod17403-content {
    padding: 15px;
    border-radius: 17px;
  }

  .mod17403-ai-hero,
  .mod17403-content-heading {
    min-height: 0;
    align-items: flex-start;
    padding: 20px;
  }

  .mod17403-ai-icon,
  .mod17403-heading-icon {
    width: 62px;
    height: 62px;
    flex-basis: 62px;
    border-radius: 18px;
  }

  .mod17403-ai-icon i,
  .mod17403-heading-icon i {
    font-size: 1.7rem;
  }

  .mod17403-ai-icon span {
    font-size: .86rem;
  }

  .mod17403-ai-network {
    display: none;
  }

  .mod17403-course-grid {
    grid-template-columns: 1fr;
  }

  .mod17403-course-card {
    min-height: 0;
  }

  .mod17403-results-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .mod17403-library-tools {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .mod17403-sort {
    grid-column: 1 / -1;
  }

  .mod17403-type-filters {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .mod17403-type-filters a {
    min-width: 0;
    padding: 8px 5px;
  }

  .mod17403-lecture-card {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 11px;
  }

  .mod17403-thumbnail {
    width: 120px;
  }

  .mod17403-lecture-card {
    position: relative;
  }

  .mod17403-lecture-body h3 {
    margin-top: 0;
  }

  .mod201-video-card-main {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .mod201-video-compact-meta {
    gap: 2px 7px;
    max-height: calc(2 * 1.45em + 2px);
    overflow: hidden !important;
    font-size: .72rem !important;
  }

  .mod201-video-compact-meta span:first-child {
    max-width: 100%;
    flex: 1 0 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .mod201-video-actions .mod17403-play-button {
    min-width: 82px;
    min-height: 34px;
  }

  .mod201-video-detail-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .mod17403-player,
  .mod17403-document-content {
    grid-column: 1 / -1;
  }

  .mod17403-lecture-card.is-mobile-player-open {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding: 8px;
  }

  .mod17403-lecture-card.is-mobile-player-open > .mod17403-thumbnail,
  .mod17403-lecture-card.is-mobile-player-open > .mod201-video-card-content {
    display: none;
  }

  .mod17403-lecture-card.is-mobile-player-open > .mod17403-player {
    grid-column: 1 / -1;
    grid-row: 1;
    min-width: 0;
    width: 100%;
    margin: 0;
  }

  .mod17425-mobile-player-toolbar {
    display: flex;
    min-height: 44px;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 7px 8px 7px 12px;
    color: #fff;
    background: #0f172a;
  }

  .mod17425-mobile-player-toolbar > strong {
    display: -webkit-box;
    min-width: 0;
    overflow: hidden;
    font-size: .82rem;
    line-height: 1.35;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }

  .mod17425-mobile-close {
    display: inline-flex;
    min-width: 68px;
    min-height: 44px;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0 10px;
    border: 1px solid rgba(255, 255, 255, .28);
    border-radius: 999px;
    color: #fff;
    background: rgba(255, 255, 255, .08);
    font-size: .76rem;
    font-weight: 850;
  }

  .mod17425-mobile-close:hover,
  .mod17425-mobile-close:focus-visible {
    border-color: #fff;
    background: rgba(255, 255, 255, .16);
  }
}

@media (max-width: 479.98px) {
  .mod17403-intro-stats {
    grid-template-columns: 1fr;
  }

  .mod17403-intro-stats div {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 14px;
    text-align: left;
  }

  .mod17403-intro-stats span {
    margin: 0;
  }

  .mod17403-mobile-menu-button {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .mod17403-mobile-menu-button strong {
    grid-column: 1 / -1;
    text-align: left;
  }

  .mod17403-ai-hero,
  .mod17403-content-heading {
    flex-direction: column;
  }

  .mod17403-library-tools {
    grid-template-columns: minmax(0, 1fr) 56px;
    padding: 10px;
  }

  .mod17403-type-filters {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .mod17403-lecture-card {
    grid-template-columns: 112px minmax(0, 1fr);
  }

  .mod17403-thumbnail {
    width: 112px;
  }

  .mod201-video-actions .mod17403-play-button {
    width: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mod17403-course-panel,
  .mod17403-accordion-toggle i,
  .mod17403-sidebar,
  .mod17403-course-card,
  .mod17424-thumbnail-play-indicator,
  .mod17403-player,
  .mod17403-player-frame iframe,
  .mod17403-player-frame video,
  .mod17425-player-loading {
    transition-duration: .01ms !important;
  }

  .mod17425-player-spinner {
    animation-duration: 1.6s;
  }
}

/* Administrator taxonomy extension */
.admin-education-taxonomy {
  margin-bottom: 32px;
  border: 1px solid #c7d8f4;
  border-radius: 24px;
  background: rgba(255, 255, 255, .98);
  box-shadow: 0 18px 54px rgba(20, 55, 100, .08);
}

.admin-education-taxonomy > details > summary,
.admin-education-taxonomy-category > summary {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  cursor: pointer;
  list-style: none;
}

.admin-education-taxonomy > details > summary::-webkit-details-marker,
.admin-education-taxonomy-category > summary::-webkit-details-marker {
  display: none;
}

.admin-education-taxonomy > details > summary {
  min-height: 70px;
  padding: 18px 24px;
  color: #173b83;
  font-weight: 950;
}

.admin-education-taxonomy > details > summary small,
.admin-education-taxonomy-category > summary small {
  color: #64748b;
  font-size: .76rem;
  font-weight: 700;
}

.admin-education-taxonomy-body {
  padding: 0 22px 22px;
  border-top: 1px solid #e2e8f0;
}

.admin-education-taxonomy-create-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 20px 0;
}

.admin-education-taxonomy-form {
  min-width: 0;
  padding: 17px;
  border: 1px solid #dbeafe;
  border-radius: 16px;
  background: #f8fbff;
}

.admin-education-taxonomy-form h3 {
  margin: 0 0 14px;
  color: #17233d;
  font-size: 1rem;
  font-weight: 950;
}

.admin-education-taxonomy-form .form-label {
  margin-bottom: 4px;
  color: #475569;
  font-size: .75rem;
  font-weight: 800;
}

.admin-education-taxonomy-submit {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: flex-end;
}

.admin-education-taxonomy-list {
  display: grid;
  gap: 10px;
}

.admin-education-taxonomy-category {
  overflow: hidden;
  border: 1px solid #dbeafe;
  border-radius: 15px;
}

.admin-education-taxonomy-category > summary {
  min-height: 54px;
  padding: 12px 16px;
  color: #27364f;
  background: #f8fbff;
  font-size: .86rem;
  font-weight: 900;
}

.admin-education-taxonomy-category > summary span {
  display: inline-flex;
  gap: 8px;
  align-items: center;
}

.admin-education-taxonomy-form.is-edit {
  border-width: 1px 0 0;
  border-radius: 0;
  background: #fff;
}

.admin-education-course-editor {
  display: grid;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid #e2e8f0;
  background: #f8fafc;
}

.admin-education-taxonomy-form.is-course-edit {
  padding: 13px;
  background: #fff;
}

.admin-education-slug {
  margin-right: auto;
  color: #64748b;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: .7rem;
}

@media (max-width: 991.98px) {
  .admin-education-taxonomy-create-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 575.98px) {
  .admin-education-taxonomy > details > summary,
  .admin-education-taxonomy-category > summary {
    align-items: flex-start;
    flex-direction: column;
  }

  .admin-education-taxonomy-body {
    padding: 0 12px 12px;
  }

  .admin-education-taxonomy-submit,
  .admin-education-taxonomy-submit .btn {
    width: 100%;
  }
}