#trainingPage .learn-system {
  color: var(--studio-text);
}

#trainingPage {
  container: training / inline-size;
  min-width: 0;
  overflow: visible;
}

#trainingPage .learn-panel,
#trainingPage .learn-system,
#trainingPage .learn-detail,
#trainingPage .review-panel {
  min-width: 0;
}

#trainingPage .learn-mode-tabs {
  display: flex;
  gap: 6px;
  padding: 4px;
  margin: 0 0 14px;
  width: fit-content;
  border: 1px solid var(--studio-line);
  border-radius: var(--studio-radius);
  background: var(--studio-surface-2);
  max-width: 100%;
  overflow-x: auto;
}

#trainingPage .learn-mode-tab {
  min-height: 38px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 6px;
  color: var(--studio-muted);
  background: transparent;
}

#trainingPage .learn-mode-tab:hover,
#trainingPage .learn-mode-tab:focus-visible {
  color: var(--studio-text);
  border-color: var(--studio-line);
}

#trainingPage .learn-mode-tab.active {
  color: var(--studio-text);
  border-color: var(--studio-accent-line);
  background: var(--studio-accent-soft);
}

#trainingPage .learn-panel[hidden],
#trainingPage .review-panel[hidden],
#trainingPage [data-practice-section][hidden] {
  display: none !important;
}

#trainingPage .learn-layout {
  display: grid;
  grid-template-columns: minmax(230px, 0.34fr) minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

#trainingPage .learn-catalog,
#trainingPage .learn-detail,
#trainingPage .review-summary,
#trainingPage .review-list {
  border: 1px solid var(--studio-line);
  border-radius: var(--studio-radius);
  background: var(--studio-surface-2);
}

#trainingPage .learn-catalog {
  position: sticky;
  top: 12px;
  max-height: 65dvh;
  overflow: auto;
  padding: 12px;
  scrollbar-color: var(--studio-line) transparent;
  scrollbar-gutter: stable;
}

#trainingPage .learn-catalog-toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-width: 0;
  padding: 12px;
  cursor: pointer;
  color: var(--studio-text);
  list-style: none;
}

#trainingPage .learn-catalog-toggle::-webkit-details-marker {
  display: none;
}

#trainingPage .learn-catalog-toggle-copy {
  display: grid;
  min-width: 0;
  gap: 2px;
}

#trainingPage .learn-catalog-toggle-copy strong,
#trainingPage .learn-catalog-toggle-copy small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#trainingPage .learn-catalog-toggle-copy small {
  color: var(--studio-muted);
  font-size: 10px;
}

#trainingPage .learn-catalog-toggle::after {
  content: "+";
  flex: 0 0 auto;
  color: var(--studio-muted);
  font-size: 18px;
}

#trainingPage .learn-catalog[open] > .learn-catalog-toggle::after {
  content: "−";
}

#trainingPage .learn-catalog-head,
#trainingPage .learn-detail-head,
#trainingPage .learn-card-head,
#trainingPage .learn-quiz-head,
#trainingPage .review-head,
#trainingPage .review-item-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

#trainingPage .learn-catalog-head {
  padding: 2px 2px 10px;
}

#trainingPage .learn-catalog h3,
#trainingPage .learn-detail h3,
#trainingPage .learn-detail h4,
#trainingPage .review-panel h3,
#trainingPage .review-panel h4 {
  margin: 0;
  color: var(--studio-text);
}

#trainingPage .learn-catalog p,
#trainingPage .learn-detail p,
#trainingPage .review-panel p {
  color: var(--studio-muted);
}

#trainingPage .learn-progress-ring {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 3px solid var(--studio-line);
  border-top-color: var(--studio-accent-strong);
  color: var(--studio-text);
  font-size: 11px;
  font-weight: 700;
}

#trainingPage .learn-chapter + .learn-chapter {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--studio-line-soft);
}

#trainingPage .learn-chapter-title {
  display: block;
  margin: 0 2px 7px;
  color: var(--studio-muted);
  font-size: 11px;
  font-weight: 700;
}

#trainingPage .learn-lesson-list {
  display: grid;
  gap: 5px;
}

#trainingPage .learn-lesson-item {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 43px;
  padding: 7px 8px;
  text-align: left;
  color: var(--studio-text);
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
}

#trainingPage .learn-lesson-item:hover:not(:disabled),
#trainingPage .learn-lesson-item:focus-visible {
  border-color: var(--studio-line);
  background: var(--studio-bg-elevated);
}

#trainingPage .learn-lesson-item.active {
  border-color: var(--studio-accent-line);
  background: var(--studio-accent-soft);
}

#trainingPage .learn-lesson-item:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#trainingPage .learn-lesson-index {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--studio-line);
  border-radius: 50%;
  color: var(--studio-muted);
  font-size: 10px;
}

#trainingPage .learn-lesson-copy {
  min-width: 0;
}

#trainingPage .learn-lesson-copy strong,
#trainingPage .learn-lesson-copy small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#trainingPage .learn-lesson-copy strong {
  font-size: 12px;
}

#trainingPage .learn-lesson-copy small {
  margin-top: 2px;
  color: var(--studio-muted);
  font-size: 10px;
}

#trainingPage .learn-status-badge,
#trainingPage .learn-meta-badge,
#trainingPage .learn-tag,
#trainingPage .review-count {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border: 1px solid var(--studio-line);
  border-radius: 999px;
  color: var(--studio-muted);
  background: var(--studio-bg-elevated);
  font-size: 10px;
  white-space: nowrap;
}

#trainingPage .learn-status-badge[data-status="practiceUnlocked"],
#trainingPage .learn-status-badge[data-status="completed"],
#trainingPage .learn-status-badge[data-status="mastered"] {
  color: var(--studio-text);
  border-color: var(--studio-accent-line);
  background: var(--studio-accent-soft);
}

#trainingPage .learn-detail {
  display: grid;
  gap: 12px;
  padding: 16px;
  overflow-wrap: anywhere;
}

#trainingPage .learn-detail-head {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--studio-line-soft);
}

#trainingPage .learn-detail-head > div:first-child {
  min-width: 0;
}

#trainingPage .learn-eyebrow {
  margin: 0 0 5px;
  color: var(--studio-accent-strong) !important;
  font-size: 11px;
  font-weight: 700;
}

#trainingPage .learn-subtitle {
  margin: 5px 0 0;
  font-size: 13px;
}

#trainingPage .learn-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

#trainingPage .learn-goals {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

#trainingPage .learn-goals li {
  position: relative;
  min-height: 38px;
  padding: 9px 10px 9px 30px;
  border: 1px solid var(--studio-line-soft);
  border-radius: 6px;
  color: var(--studio-muted);
  background: var(--studio-bg-elevated);
  font-size: 12px;
}

#trainingPage .learn-goals li::before {
  content: "✓";
  position: absolute;
  left: 10px;
  color: var(--studio-accent-strong);
  font-weight: 700;
}

#trainingPage .learn-card,
#trainingPage .learn-quiz,
#trainingPage .learn-practice-gate,
#trainingPage .review-item {
  border: 1px solid var(--studio-line);
  border-radius: var(--studio-radius);
  background: var(--studio-bg-elevated);
}

#trainingPage .learn-card,
#trainingPage .learn-quiz,
#trainingPage .learn-practice-gate {
  padding: 14px;
}

#trainingPage .learn-card-body {
  margin: 10px 0;
  line-height: 1.65;
}

#trainingPage .learn-bullets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 10px;
  padding: 0;
  list-style: none;
}

#trainingPage .learn-bullets li {
  padding: 5px 8px;
  border: 1px solid var(--studio-line-soft);
  border-radius: 5px;
  color: var(--studio-muted);
  font-size: 11px;
}

#trainingPage .learn-tip,
#trainingPage .learn-warning {
  margin: 8px 0 0;
  padding: 9px 10px;
  border-left: 2px solid var(--studio-accent-strong);
  background: var(--studio-accent-soft);
  font-size: 12px;
}

#trainingPage .learn-warning {
  border-left-color: #d88a54;
}

#trainingPage .learn-actions,
#trainingPage .learn-quiz-actions,
#trainingPage .learn-practice-actions,
#trainingPage .review-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

#trainingPage .learn-actions {
  justify-content: space-between;
  margin-top: 12px;
}

#trainingPage .learn-action,
#trainingPage .learn-option,
#trainingPage .review-action {
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--studio-line);
  border-radius: 6px;
  color: var(--studio-text);
  background: var(--studio-surface-2);
}

#trainingPage .learn-action:hover:not(:disabled),
#trainingPage .learn-option:hover:not(:disabled),
#trainingPage .review-action:hover:not(:disabled) {
  border-color: var(--studio-accent-line);
}

#trainingPage .learn-action.primary,
#trainingPage .review-action.primary {
  border-color: var(--studio-accent-line);
  background: var(--studio-accent-soft);
}

#trainingPage .learn-action:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

#trainingPage .learn-visual {
  margin: 12px 0 0;
  width: 100%;
  max-width: 100%;
  min-width: 0;
}

#trainingPage .learn-visual-skeleton {
  min-height: 145px;
  border: 1px solid var(--studio-line-soft);
  border-radius: 6px;
  background: linear-gradient(90deg, var(--studio-surface-2), var(--studio-bg-elevated), var(--studio-surface-2));
  background-size: 200% 100%;
  animation: learn-skeleton 1.4s ease-in-out infinite;
}

#trainingPage .learn-visual[data-asset-status="ready"] .learn-visual-skeleton,
#trainingPage .learn-visual[data-asset-status="missing"] .learn-visual-skeleton,
#trainingPage .learn-visual-programmatic .learn-visual-skeleton {
  display: none;
}

#trainingPage .learn-visual-media {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 145px;
  overflow: hidden;
  aspect-ratio: var(--learn-visual-ratio, 16 / 9);
  border: 1px solid var(--studio-line-soft);
  border-radius: 6px;
  background: var(--studio-surface-2);
}

#trainingPage .learn-visual-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

#trainingPage .learn-visual-labels {
  position: absolute;
  inset: auto 8px 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

#trainingPage .learn-visual-labels span {
  padding: 3px 6px;
  border: 1px solid var(--studio-line);
  border-radius: 4px;
  color: var(--studio-text);
  background: color-mix(in srgb, var(--studio-bg-elevated) 88%, transparent);
  font-size: 9px;
}

#trainingPage .learn-visual figcaption {
  display: grid;
  gap: 3px;
  padding-top: 7px;
  color: var(--studio-muted);
  font-size: 11px;
}

#trainingPage .learn-visual figcaption small {
  color: var(--studio-subtle);
}

@keyframes learn-skeleton {
  from { background-position: 100% 0; }
  to { background-position: -100% 0; }
}

/* Exact teaching diagrams: authored as semantic HTML so labels and positions
   stay crisp at every zoom level. */
#trainingPage .learn-visual-programmatic .learn-visual-media {
  display: block;
  min-height: 0;
  aspect-ratio: auto;
  overflow: visible;
  padding: 12px;
}

#trainingPage .lesson-program {
  display: grid;
  gap: 12px;
  min-width: 0;
  overflow-x: auto;
  color: var(--studio-text);
}

#trainingPage .lesson-program-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 5px 14px;
}

#trainingPage .lesson-program-head span {
  font-size: 12px;
  font-weight: 750;
}

#trainingPage .lesson-program-head small,
#trainingPage .lesson-instrument-card > small {
  color: var(--studio-muted);
  font-size: 10px;
}

#trainingPage .lesson-visual-note {
  margin: 0;
  color: var(--studio-muted);
  font-size: 10px;
  line-height: 1.6;
}

#trainingPage .lesson-note-sequence {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 7px;
  padding: 8px;
  border: 1px solid var(--studio-line-soft);
  border-radius: 6px;
  background: var(--studio-bg-elevated);
}

#trainingPage .lesson-note-node {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--studio-line);
  border-radius: 50%;
  background: var(--studio-surface-2);
  font-size: 12px;
  font-weight: 800;
}

#trainingPage .lesson-note-node.is-root {
  border-color: var(--studio-accent-line);
  background: var(--studio-accent-soft);
}

#trainingPage .lesson-note-arrow {
  color: var(--studio-muted);
  font-size: 12px;
}

#trainingPage .lesson-instrument-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

#trainingPage .lesson-instrument-card {
  display: grid;
  align-content: start;
  gap: 8px;
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--studio-line-soft);
  border-radius: 6px;
  background: var(--studio-bg-elevated);
}

#trainingPage .lesson-instrument-card > strong {
  font-size: 11px;
}

#trainingPage .lesson-mini-keys {
  display: grid;
  grid-template-columns: repeat(8, minmax(18px, 1fr));
  min-height: 62px;
}

#trainingPage .lesson-mini-keys span {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 4px 1px;
  border: 1px solid var(--studio-line);
  border-right: 0;
  background: var(--studio-surface-1);
  color: var(--studio-ink, var(--studio-text));
  font-size: 9px;
  font-weight: 800;
}

#trainingPage .lesson-mini-keys span:last-child {
  border-right: 1px solid var(--studio-line);
}

#trainingPage .lesson-string-summary {
  display: grid;
  gap: 4px;
}

#trainingPage .lesson-string-summary span {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 16px;
  padding-inline: 6px;
  border-top: 1px solid var(--studio-line);
  font-size: 9px;
  font-weight: 800;
}

#trainingPage .lesson-string-summary small {
  color: var(--studio-muted);
  font-size: 8px;
}

#trainingPage .lesson-keyboard {
  position: relative;
  min-width: 460px;
  min-height: 150px;
}

#trainingPage .lesson-white-keys {
  display: grid;
  grid-template-columns: repeat(var(--white-count), minmax(34px, 1fr));
  min-height: 150px;
}

#trainingPage .lesson-white-key {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 0 2px 10px;
  border: 1px solid var(--studio-line);
  border-right: 0;
  background: var(--studio-surface-1);
  color: var(--studio-muted);
  font-size: 10px;
}

#trainingPage .lesson-white-key:last-child {
  border-right: 1px solid var(--studio-line);
}

#trainingPage .lesson-white-key.is-active {
  box-shadow: inset 0 -34px 0 var(--studio-accent-soft);
  color: var(--studio-text);
}

#trainingPage .lesson-white-key.is-root b {
  color: var(--studio-accent-strong);
}

#trainingPage .lesson-black-keys {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

#trainingPage .lesson-black-key {
  position: absolute;
  top: 0;
  left: calc(var(--key-left) - 11px);
  width: 22px;
  height: 90px;
  border: 1px solid color-mix(in srgb, var(--studio-line) 65%, black);
  border-radius: 0 0 4px 4px;
  background: #15171d;
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.28);
}

#trainingPage .lesson-key-groups,
#trainingPage .lesson-anatomy-labels,
#trainingPage .lesson-shape-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

#trainingPage .lesson-key-groups span,
#trainingPage .lesson-anatomy-labels span,
#trainingPage .lesson-shape-legend span {
  padding: 5px 7px;
  border: 1px solid var(--studio-line-soft);
  border-radius: 4px;
  color: var(--studio-muted);
  background: var(--studio-bg-elevated);
  font-size: 9px;
}

#trainingPage .lesson-fretboard {
  min-width: calc(86px + var(--fret-count) * 48px);
  border: 1px solid var(--studio-line);
  border-radius: 6px;
  background: color-mix(in srgb, var(--studio-bg-elevated) 85%, #6a4934);
}

#trainingPage .lesson-fret-head,
#trainingPage .lesson-fret-string {
  display: grid;
  grid-template-columns: 86px repeat(var(--fret-count), minmax(48px, 1fr));
  align-items: stretch;
}

#trainingPage .lesson-fret-head span,
#trainingPage .lesson-fret-head b,
#trainingPage .lesson-fret-string > strong {
  display: grid;
  place-items: center;
  min-height: 24px;
  color: var(--studio-muted);
  font-size: 8px;
}

#trainingPage .lesson-fret-head b,
#trainingPage .lesson-fret-string > strong,
#trainingPage .lesson-fret-cell {
  border-left: 1px solid var(--studio-line-soft);
}

#trainingPage .lesson-fret-string {
  position: relative;
  min-height: 36px;
  border-top: 1px solid var(--studio-line-soft);
}

#trainingPage .lesson-fret-string::after {
  content: "";
  position: absolute;
  z-index: 0;
  left: 86px;
  right: 0;
  top: 50%;
  height: clamp(1px, calc(var(--string-weight) * 0.55px), 4px);
  background: color-mix(in srgb, var(--studio-muted) 68%, white);
}

#trainingPage .lesson-fret-string > strong,
#trainingPage .lesson-fret-cell {
  position: relative;
  z-index: 1;
}

#trainingPage .lesson-fret-cell {
  display: grid;
  place-items: center;
}

#trainingPage .lesson-fret-cell i {
  display: grid;
  place-items: center;
  min-width: 24px;
  height: 24px;
  padding-inline: 4px;
  border: 1px solid var(--studio-line);
  border-radius: 50%;
  background: var(--studio-surface-1);
  color: var(--studio-text);
  font-size: 9px;
  font-style: normal;
  font-weight: 800;
}

#trainingPage .lesson-fret-cell.is-root i,
#trainingPage .lesson-shape-legend i.is-root {
  border-color: var(--studio-accent-line);
  background: var(--studio-accent-soft);
}

#trainingPage .lesson-fret-cell.is-fifth i,
#trainingPage .lesson-shape-legend i.is-fifth {
  border-color: color-mix(in srgb, var(--studio-accent-line) 50%, #44b4d5);
  background: color-mix(in srgb, var(--studio-accent-soft) 65%, #1689aa);
}

#trainingPage .lesson-shape-legend i {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 5px;
  border: 1px solid;
  border-radius: 50%;
}

#trainingPage .lesson-triad-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

#trainingPage .lesson-triad {
  display: grid;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--studio-line-soft);
  border-radius: 6px;
  background: var(--studio-bg-elevated);
}

#trainingPage .lesson-triad > div:first-child {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

#trainingPage .lesson-triad > div:first-child small {
  color: var(--studio-muted);
}

#trainingPage .lesson-triad-notes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

#trainingPage .lesson-triad-notes span {
  display: grid;
  gap: 2px;
  padding: 9px 4px;
  text-align: center;
  border: 1px solid var(--studio-line);
  border-radius: 5px;
  background: var(--studio-surface-2);
}

#trainingPage .lesson-triad-notes span.is-third {
  border-color: var(--studio-accent-line);
  background: var(--studio-accent-soft);
}

#trainingPage .lesson-triad-notes small {
  color: var(--studio-muted);
  font-size: 8px;
}

#trainingPage .lesson-diatonic {
  display: grid;
  grid-template-columns: repeat(7, minmax(58px, 1fr));
  gap: 6px;
  min-width: 490px;
}

#trainingPage .lesson-diatonic > span {
  display: grid;
  gap: 3px;
  padding: 9px 4px;
  text-align: center;
  border: 1px solid var(--studio-line-soft);
  border-radius: 5px;
  background: var(--studio-bg-elevated);
}

#trainingPage .lesson-diatonic > span.is-common {
  border-color: var(--studio-accent-line);
  background: var(--studio-accent-soft);
}

#trainingPage .lesson-diatonic small,
#trainingPage .lesson-diatonic em {
  color: var(--studio-muted);
  font-size: 8px;
  font-style: normal;
}

#trainingPage .lesson-progression {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

#trainingPage .lesson-progression b {
  padding: 6px 10px;
  border: 1px solid var(--studio-accent-line);
  border-radius: 5px;
  background: var(--studio-accent-soft);
}

#trainingPage .learn-quiz-list {
  display: grid;
  gap: 10px;
}

#trainingPage .learn-quiz-head span {
  color: var(--studio-muted);
  font-size: 10px;
}

#trainingPage .learn-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 7px;
  margin: 11px 0;
}

#trainingPage .learn-option {
  justify-content: flex-start;
  text-align: left;
}

#trainingPage .learn-option.selected {
  border-color: var(--studio-accent-strong);
  background: var(--studio-accent-soft);
}

#trainingPage .learn-option.correct {
  border-color: #3f9b73;
  background: rgba(63, 155, 115, 0.14);
}

#trainingPage .learn-option.wrong {
  border-color: #c86a6a;
  background: rgba(200, 106, 106, 0.13);
}

#trainingPage .learn-sequence {
  min-height: 32px;
  margin: 0 0 9px;
  padding: 7px 9px;
  border: 1px dashed var(--studio-line);
  border-radius: 5px;
  color: var(--studio-muted);
  font-size: 11px;
}

#trainingPage .learn-feedback {
  margin: 10px 0 0;
  padding: 10px;
  border-left: 2px solid var(--studio-line);
  color: var(--studio-muted);
  background: var(--studio-surface-2);
  font-size: 12px;
  line-height: 1.55;
}

#trainingPage .learn-feedback.correct {
  border-left-color: #3f9b73;
}

#trainingPage .learn-feedback.wrong {
  border-left-color: #c86a6a;
}

#trainingPage .learn-practice-gate {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
}

#trainingPage .learn-practice-gate p {
  margin: 5px 0 0;
}

#trainingPage .review-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.32fr) minmax(0, 1fr);
  gap: 14px;
}

#trainingPage .review-summary,
#trainingPage .review-list {
  padding: 14px;
}

#trainingPage .review-summary {
  display: grid;
  gap: 12px;
  align-content: start;
}

#trainingPage .review-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 7px;
}

#trainingPage .review-metric {
  padding: 10px;
  border: 1px solid var(--studio-line-soft);
  border-radius: 6px;
  background: var(--studio-bg-elevated);
}

#trainingPage .review-metric strong,
#trainingPage .review-metric span {
  display: block;
}

#trainingPage .review-metric strong {
  font-size: 20px;
}

#trainingPage .review-metric span {
  margin-top: 3px;
  color: var(--studio-muted);
  font-size: 10px;
}

#trainingPage .learn-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

#trainingPage .review-items {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

#trainingPage .review-item {
  padding: 12px;
}

#trainingPage .review-item p {
  margin: 7px 0 0;
  font-size: 12px;
}

#trainingPage .review-item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 9px;
}

#trainingPage .learn-empty {
  display: grid;
  place-items: center;
  min-height: 220px;
  padding: 24px;
  text-align: center;
  border: 1px dashed var(--studio-line);
  border-radius: var(--studio-radius);
  color: var(--studio-muted);
  background: var(--studio-surface-2);
}

@media (max-width: 1499px) {
  #trainingPage .training-header {
    flex-wrap: wrap;
  }

  #trainingPage .training-header > div:first-child {
    flex: 1 1 320px;
    min-width: 0;
  }

  #trainingPage .training-summary {
    flex: 1 1 560px;
    grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
    min-width: 0;
    width: 100%;
  }
}

@media (max-width: 1199px) {
  #trainingPage .learn-layout,
  #trainingPage .review-layout {
    grid-template-columns: 1fr;
  }

  #trainingPage .learn-catalog {
    position: static;
    max-height: none;
    overflow: visible;
    padding: 0;
  }

  #trainingPage .learn-catalog-toggle {
    display: flex;
  }

  #trainingPage .learn-catalog-body {
    max-height: 48dvh;
    overflow-y: auto;
    padding: 12px;
    border-top: 1px solid var(--studio-line-soft);
    scrollbar-gutter: stable;
  }
}

/* Viewport rules provide the requested product breakpoints; container rules
   add the same protection when the training center is embedded in a narrower
   shell or side-by-side host. */
@container training (max-width: 980px) {
  #trainingPage .learn-layout,
  #trainingPage .review-layout {
    grid-template-columns: 1fr;
  }

  #trainingPage .learn-catalog {
    position: static;
    max-height: none;
    overflow: visible;
    padding: 0;
  }

  #trainingPage .learn-catalog-toggle {
    display: flex;
  }

  #trainingPage .learn-catalog-body {
    max-height: 48dvh;
    overflow-y: auto;
    padding: 12px;
    border-top: 1px solid var(--studio-line-soft);
    scrollbar-gutter: stable;
  }
}

@container training (max-width: 700px) {
  #trainingPage .training-summary,
  #trainingPage .learn-goals,
  #trainingPage .learn-options,
  #trainingPage .lesson-instrument-grid,
  #trainingPage .lesson-triad-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 899px) {
  #trainingPage .training-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #trainingPage .learn-goals,
  #trainingPage .learn-options {
    grid-template-columns: 1fr;
  }

  #trainingPage .lesson-instrument-grid,
  #trainingPage .lesson-triad-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  #trainingPage .training-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
    width: 100%;
  }

  #trainingPage .training-header > div:first-child {
    min-width: 0;
  }

  #trainingPage .training-header h2 {
    font-size: 32px;
  }

  #trainingPage .training-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    min-width: 0;
    width: 100%;
  }

  #trainingPage .learn-mode-tabs {
    width: 100%;
    scrollbar-width: thin;
  }

  #trainingPage .learn-mode-tab {
    flex: 1;
    padding-inline: 8px;
  }

  #trainingPage .learn-detail-head,
  #trainingPage .learn-practice-gate {
    grid-template-columns: 1fr;
  }

  #trainingPage .learn-detail-head {
    display: grid;
  }

  #trainingPage .learn-meta {
    justify-content: flex-start;
  }

  #trainingPage .learn-visual-programmatic .learn-visual-media {
    padding: 8px;
  }

  #trainingPage .lesson-note-sequence {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  #trainingPage .learn-system *,
  #trainingPage .learn-system *::before,
  #trainingPage .learn-system *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}
.learn-lesson-item.entitlement-locked {
  opacity: .78;
}

.learn-lesson-item.entitlement-locked .learn-status-badge {
  color: var(--studio-accent, #8aa7ff);
}