/* Hallmark · pre-emit critique: P5 H5 E5 S5 R5 V5 */
/* Hallmark · genre: knowledge hub · macrostructure: Ecosystem Index · theme: Ostov Pro industrial · enrichment: existing assembly video · nav: shared · footer: shared · contrast: pass (40-41) · mobile: pass (34, 49-57) */

.learning-hub,
.learning-layout {
  width: min(
    var(--layout-max, 1380px),
    calc(100% - (var(--layout-gutter, 30px) * 2))
  );
  margin: 0 auto;
  color: var(--color-ink, #20262d);
}

.learning-hub {
  padding: 32px 0 72px;
}

.learning-layout {
  padding: 72px 0;
}

/* The course follows the shared B2C shell: no browser link underlines. */
.learning-hub a,
.learning-layout a {
  color: inherit;
  text-decoration: none;
}

.learning-layout {
  --learning-feedback-correct: #2e6e48;
  --learning-feedback-incorrect: #a33b32;
}

.learning-hub__header {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  max-width: none;
  margin-bottom: 0;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-rule, #b7bec7);
}

.learning-layout > header {
  max-width: 760px;
  margin-bottom: 38px;
}

.learning-card__number,
.learning-layout > header > p {
  margin: 0 0 10px;
  color: var(--color-muted, #59616b);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.learning-hub h1 {
  margin: 0;
  font-size: var(--type-h1);
  line-height: .98;
  letter-spacing: -.045em;
}

.learning-layout h1 {
  margin: 0;
  font-size: clamp(36px, 5vw, 68px);
  line-height: 1;
}

.learning-hub__header > p:last-child {
  max-width: 48ch;
  margin: 0;
  color: var(--color-muted, #59616b);
  font-size: var(--type-body-lg);
  line-height: 1.5;
}

.learning-hub__routes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 16px;
  border: 1px solid var(--color-rule, #b7bec7);
}

.learning-hub__routes a {
  display: grid;
  min-height: 126px;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 18px;
  background: var(--color-paper, #f7f8f9);
}

.learning-hub__routes a + a {
  border-left: 1px solid var(--color-rule, #b7bec7);
}

.learning-hub__routes a:hover {
  background: var(--color-paper-2, #f0f2f4);
}

.learning-hub__route-icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid var(--color-ink, #20262d);
  color: var(--color-ink, #20262d);
}

.learning-hub__route-icon svg,
.learning-hub__route-arrow svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 1.75;
}

.learning-hub__route-copy {
  display: grid;
  min-width: 0;
  gap: 3px;
}

.learning-hub__route-copy > span {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.1;
}

.learning-hub__route-copy small {
  color: var(--color-muted, #59616b);
  font-size: 15px;
  line-height: 1.45;
}

.learning-hub__route-meta {
  margin-top: 3px;
  color: var(--color-ink-2, #30363d) !important;
  font-size: 13px !important;
  font-weight: 700;
}

.learning-hub__route-arrow {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  justify-self: end;
  color: var(--color-muted, #59616b);
  transition: transform var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out);
}

.learning-hub__routes a:hover .learning-hub__route-arrow {
  color: var(--color-accent, #b34d20);
  transform: translateX(3px);
}

.learning-video {
  margin: 40px 0 var(--section-space, 80px);
  scroll-margin-top: 88px;
}

.learning-video__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  grid-template-rows: minmax(0, 1fr);
  height: clamp(520px, 44vw, 680px);
  align-items: stretch;
  overflow: hidden;
  border: 1px solid var(--color-ink, #20262d);
}

.learning-video__hero {
  display: grid;
  min-width: 0;
  grid-template-rows: minmax(0, 1fr) auto;
  background: var(--color-paper, #f7f8f9);
  color: var(--color-ink, #20262d);
}

.learning-video__screen {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: var(--color-ink-2, #30363d);
}

.learning-video__screen > :where(img, iframe) {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  object-fit: cover;
}

.learning-video__screen > img {
  filter: grayscale(.12) contrast(1.06);
  transition: transform 700ms var(--ease-out);
}

.learning-hub .learning-video__play {
  position: absolute;
  right: 20px;
  bottom: 20px;
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border: 1px solid var(--color-accent, #b34d20);
  background: var(--color-accent, #b34d20);
  color: var(--color-accent-ink, #fff);
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

.learning-video__play-icon {
  display: inline-grid;
  width: 18px;
  height: 18px;
  place-items: center;
  font-size: 12px;
  line-height: 1;
}

.learning-video__play:hover {
  background: var(--color-accent-hover, #963d17);
}

.learning-video__copy {
  display: grid;
  gap: 8px;
  padding: 20px 24px 22px;
  border-top: 1px solid var(--color-rule, #b7bec7);
  background: var(--color-paper-2, #f0f2f4);
}

.learning-video__copy h2,
.learning-course__title {
  margin: 0;
  overflow-wrap: anywhere;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.1;
  letter-spacing: -.035em;
}

.learning-video__copy p {
  max-width: 58ch;
  color: var(--color-muted, #59616b);
  font-size: 16px;
  line-height: 1.5;
}

.learning-video__now-playing {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 5px 8px;
  margin: 2px 0 0;
}

.learning-video__now-playing > span,
.learning-video__now-playing time {
  color: var(--color-ink, #20262d);
  font-size: 13px;
  line-height: 1.4;
}

.learning-video__now-playing > span { color: var(--color-muted, #59616b); }
.learning-video__now-playing strong { font-size: 14px; }
.learning-video__now-playing time { font-variant-numeric: tabular-nums; }

.learning-video__playlist {
  display: grid;
  min-width: 0;
  min-height: 0;
  grid-template-rows: auto minmax(0, 1fr);
  border-left: 1px solid var(--color-ink, #20262d);
  background: var(--color-paper-2, #f0f2f4);
}

.learning-video__playlist-head {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--color-rule, #b7bec7);
}

.learning-video__playlist-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
}

.learning-video__playlist-head span {
  color: var(--color-muted, #59616b);
  font-size: 12px;
  white-space: nowrap;
}

.learning-video__queue {
  min-height: 0;
  padding: 0 8px 12px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-color: var(--color-accent, #b34d20) transparent;
  scrollbar-width: thin;
}

.learning-video__queue::-webkit-scrollbar {
  width: 7px;
}

.learning-video__queue::-webkit-scrollbar-thumb {
  background: var(--color-accent, #b34d20);
  border: 2px solid var(--color-paper-2, #f0f2f4);
}

.learning-video__queue:focus-visible {
  outline: 2px solid var(--color-focus, #1f5f9b);
  outline-offset: -2px;
}

.learning-video__group h4 {
  position: sticky;
  z-index: 1;
  top: 0;
  margin: 0;
  padding: 14px 10px 9px;
  background: var(--color-paper-2, #f0f2f4);
  color: var(--color-muted, #59616b);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.learning-video__group ol {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.learning-hub .learning-video__group button {
  display: grid;
  width: 100%;
  min-height: 52px;
  grid-template-columns: 30px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border: 0;
  background: var(--color-paper, #f7f8f9);
  color: var(--color-ink-2, #30363d);
  text-align: left;
  cursor: pointer;
}

.learning-hub .learning-video__group button:hover {
  background: color-mix(in oklch, var(--color-paper, #f7f8f9) 65%, var(--color-paper-3, #dce1e6));
}

.learning-hub .learning-video__group button[aria-pressed="true"] {
  background: var(--color-paper-3, #dce1e6);
  box-shadow: inset 3px 0 0 var(--color-accent, #b34d20);
  color: var(--color-ink, #20262d);
  font-weight: 700;
}

.learning-video__number {
  color: var(--color-muted, #59616b);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.learning-video__title {
  min-width: 0;
}

.learning-video__duration {
  color: var(--color-muted, #59616b);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  font-weight: 500;
  white-space: nowrap;
}

.learning-course {
  scroll-margin-top: 88px;
}

.learning-course__title {
  padding-bottom: 10px;
}

.learning-course__group {
  margin-top: 32px;
  padding-top: 14px;
  border-top: 1px solid var(--color-rule, #b7bec7);
}

.learning-course__group h3 {
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

@media (hover: hover) and (pointer: fine) {
  .learning-video__hero:hover .learning-video__screen > img {
    transform: scale(1.025);
  }
}

.learning-hub__progress {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  margin: 28px 0 0;
  padding: 24px;
  border-bottom: 1px solid var(--color-rule, #b7bec7);
  background: var(--color-paper-2, #f0f2f4);
}

.learning-progress__copy {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.learning-hub__progress p { margin: 0; }
.learning-hub__progress [data-learning-progress] { font-weight: 700; }
.learning-hub__progress [data-learning-next] { color: var(--color-muted, #59616b); }

.learning-progress__track {
  width: min(100%, 520px);
  height: 3px;
  margin-top: 5px;
  overflow: hidden;
  background: var(--color-rule, #b7bec7);
}

.learning-progress__track span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--color-accent, #b34d20);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms var(--ease-out);
}

.learning-hub a.learning-hub__continue {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  background: var(--color-accent, #b34d20);
  color: var(--color-accent-ink, #fff);
  font-weight: 700;
  white-space: nowrap;
}

.learning-hub button,
.learning-quiz button {
  min-height: 44px;
  border: 1px solid var(--color-ink, #20262d);
  padding: 10px 16px;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.learning-hub button:hover {
  border-color: var(--color-accent, #b34d20);
  color: var(--color-accent, #b34d20);
}

.learning-hub .learning-video__play:hover {
  color: var(--color-accent-ink, #fff);
}

.learning-hub button:focus-visible,
.learning-hub__continue:focus-visible,
.learning-quiz button:focus-visible,
.learning-card__link:focus-visible,
.learning-breadcrumbs a:focus-visible,
.learning-sidebar a:focus-visible,
.learning-pagination a:focus-visible,
.learning-question input:focus-visible + label {
  outline: 2px solid var(--color-focus, #1f5f9b);
  outline-offset: 3px;
}

.learning-hub button:active,
.learning-quiz button:active { transform: translateY(1px); }

.learning-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.learning-card {
  border-bottom: 1px solid var(--color-rule, #b7bec7);
  background: var(--color-paper, #f7f8f9);
}

.learning-grid {
  border-top: 1px solid var(--color-rule, #b7bec7);
}

.learning-card__link {
  display: grid;
  min-height: 112px;
  grid-template-columns: 112px minmax(0, 1fr) auto 24px;
  align-items: center;
  gap: 24px;
  padding: 22px 24px;
}

.learning-card__number {
  color: var(--color-muted, #59616b);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.learning-card__body {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.learning-card__summary {
  max-width: 58ch;
  margin: 0;
  color: var(--color-muted, #59616b);
  font-size: 15px;
  line-height: 1.45;
}

.learning-card h2 {
  margin: 0;
  overflow-wrap: anywhere;
  font-size: 22px;
  line-height: 1.2;
}

.learning-card__state {
  color: var(--color-muted, #59616b);
  font-size: 14px;
}

.learning-card__state { font-weight: 600; }
.learning-card__arrow { font-size: 24px; line-height: 1; }

.learning-card[data-learning-state="current"] {
  position: relative;
  grid-column: 1 / -1;
  background: var(--color-paper-2, #f0f2f4);
  box-shadow: inset 4px 0 0 var(--color-accent, #b34d20);
}

.learning-card[data-learning-state="current"] .learning-card__state,
.learning-card[data-learning-state="current"] .learning-card__arrow {
  color: var(--color-accent, #b34d20);
}

.learning-card[data-learning-state="complete"] .learning-card__state {
  color: var(--learning-feedback-correct, #2e6e48);
}

.learning-card[data-learning-state="unavailable"] { background: var(--color-paper-2, #f0f2f4); }
.learning-card[data-learning-state="unavailable"] .learning-card__link { opacity: .68; }

.learning-card a.learning-card__link:hover {
  background: var(--color-paper-2, #f0f2f4);
}

.learning-hub__settings {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: 24px;
  color: var(--color-muted, #59616b);
  font-size: 14px;
}

.learning-hub__settings > button {
  min-height: 44px;
  padding: 0;
  border: 0;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.learning-hub__settings > button:disabled {
  cursor: default;
  opacity: .45;
  text-decoration: none;
}

.learning-hub__settings p {
  margin: 0;
}

.learning-hub__settings p button {
  min-height: 44px;
  margin-left: 8px;
  padding: 0 10px;
}

.learning-breadcrumbs { margin-bottom: 30px; color: var(--color-muted, #59616b); font-size: 14px; }
.learning-breadcrumbs a { color: inherit; }
.learning-layout { display: block; }
.learning-body { display: grid; grid-template-columns: minmax(0, 1fr) 270px; gap: 64px; align-items: start; }
.learning-sidebar { border-left: 1px solid var(--color-rule, #b7bec7); padding-left: 20px; }
.learning-sidebar ol { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.learning-sidebar a { color: inherit; }
.learning-sidebar__item--current a { color: var(--color-accent, #b34d20); font-weight: 700; }
.learning-sidebar span { color: var(--color-muted, #59616b); }
.learning-content {
  max-width: 760px;
  font-size: 18px;
  line-height: 1.65;
}
.learning-content p { margin: 0 0 1.15em; }
.learning-content h2 {
  margin: 2.1em 0 .65em;
  font-family: var(--font-display);
  font-size: clamp(25px, 2.5vw, 34px);
  line-height: 1.12;
  letter-spacing: -.035em;
}
.learning-content h2:first-child { margin-top: 0; }
.learning-content :where(ul, ol) {
  display: grid;
  gap: .55em;
  margin: 0 0 1.35em;
  padding-left: 1.35em;
}
.learning-content li { padding-left: .2em; }
.learning-figure {
  margin: 1.8em 0 2.1em;
}
.learning-figure img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--color-paper-2, #f0f2f4);
}
.learning-figure figcaption {
  margin-top: 10px;
  color: var(--color-muted, #59616b);
  font-size: 14px;
  line-height: 1.45;
}
.learning-author {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 18px;
  max-width: 760px;
  margin-top: 40px;
  padding: 24px 0;
  border-block: 1px solid var(--color-rule, #b7bec7);
}
.learning-author__photo {
  display: block;
  width: 88px;
  height: 88px;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--color-paper-2, #f0f2f4);
}
.learning-author :where(p) { margin: 0; }
.learning-author__label {
  color: var(--color-muted, #59616b);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.learning-author__name {
  margin-top: 7px;
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.1;
}
.learning-author__role { margin-top: 5px; font-weight: 600; }
.learning-author__experience { max-width: 56ch; margin-top: 10px; line-height: 1.5; }
.learning-author__date { margin-top: 12px; color: var(--color-muted, #59616b); font-size: 14px; }
.learning-placeholder { padding: 22px; border-left: 3px solid var(--color-accent, #b34d20); background: var(--color-paper-2, #f0f2f4); }

.learning-quiz {
  max-width: 760px;
  margin-top: 28px;
  padding: clamp(24px, 4vw, 40px);
  background: var(--color-paper-2);
}
.learning-quiz__header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-rule);
}
.learning-quiz h2 { margin: 0; font-size: 28px; }
.learning-quiz__meta,
.learning-quiz__steps {
  display: flex;
  align-items: center;
}
.learning-quiz__meta { gap: 16px; margin-inline-start: auto; }
.learning-quiz__steps { gap: 8px; }
.learning-quiz__step {
  width: 24px;
  height: 4px;
  background: var(--color-rule);
}
.learning-quiz__step[data-state="current"] { background: var(--color-accent); }
.learning-quiz__step[data-state="complete"] { background: var(--color-ink-2); }
.learning-quiz__count {
  color: var(--color-muted);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.learning-question {
  min-width: 0;
  margin: 0;
  padding: 32px 0 0;
  border: 0;
}
.learning-question[hidden] { display: none; }
.learning-question legend {
  max-width: 22ch;
  padding: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -.03em;
  overflow-wrap: anywhere;
  min-width: 0;
}
.learning-question legend:focus { outline: none; }
.learning-quiz__option {
  display: grid;
  margin-top: 12px;
}
.learning-question legend + .learning-quiz__option { margin-top: 28px; }
.learning-quiz__option input {
  z-index: 1;
  grid-area: 1 / 1;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}
.learning-quiz__option-label {
  grid-area: 1 / 1;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: center;
  min-height: 56px;
  border: 1px solid var(--color-rule);
  background: var(--color-paper);
  line-height: 1.4;
  cursor: pointer;
  transition:
    transform var(--dur-short) var(--ease-out),
    border-color var(--dur-short) var(--ease-out),
    background-color var(--dur-short) var(--ease-out);
}
.learning-quiz__option-label > span:last-child { padding: 12px 16px; }
.learning-quiz__option-key {
  display: grid;
  align-self: stretch;
  place-items: center;
  border-right: 1px solid var(--color-rule);
  color: var(--color-muted);
  font-weight: 700;
}
.learning-quiz__option input:checked + .learning-quiz__option-label {
  border-color: var(--color-ink);
  background: var(--color-paper);
}
.learning-quiz__option input:checked + .learning-quiz__option-label .learning-quiz__option-key {
  border-color: var(--color-ink);
  background: var(--color-ink);
  color: var(--color-paper);
}
.learning-quiz__option input:disabled {
  cursor: not-allowed;
}
.learning-quiz__option input:disabled + .learning-quiz__option-label {
  opacity: .55;
  cursor: not-allowed;
}
.learning-quiz__option[data-option-status] .learning-quiz__option-label { opacity: 1; }
.learning-quiz__option[data-option-status="correct"] .learning-quiz__option-label {
  border-color: var(--learning-feedback-correct);
}
.learning-quiz__option[data-option-status="correct"] .learning-quiz__option-key {
  border-color: var(--learning-feedback-correct);
  background: var(--learning-feedback-correct);
  color: var(--color-paper);
}
.learning-quiz__option[data-option-status="incorrect"] .learning-quiz__option-label {
  border-color: var(--learning-feedback-incorrect);
}
.learning-quiz__option[data-option-status="incorrect"] .learning-quiz__option-key {
  border-color: var(--learning-feedback-incorrect);
  background: var(--learning-feedback-incorrect);
  color: var(--color-paper);
}
.learning-question__feedback {
  min-height: 1.5em;
  margin: 16px 0 0;
  font-weight: 600;
}
.learning-question[data-quiz-status="correct"] .learning-question__feedback { color: var(--learning-feedback-correct); }
.learning-question[data-quiz-status="incorrect"] .learning-question__feedback { color: var(--learning-feedback-incorrect); }
.learning-quiz__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 24px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--color-rule);
}
.learning-quiz__footer[hidden] { display: none; }
.learning-quiz__hint { margin: 0; color: var(--color-muted); font-size: 14px; }
.learning-quiz__actions { display: flex; flex-wrap: wrap; gap: 12px; }
.learning-quiz button { white-space: nowrap; }
.learning-quiz [data-quiz-submit],
.learning-quiz [data-quiz-next] {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  font-weight: 600;
  white-space: nowrap;
}
.learning-quiz button:disabled {
  border-color: var(--color-rule);
  background: var(--color-paper-3);
  color: var(--color-muted);
  opacity: .55;
  cursor: not-allowed;
}
.learning-quiz__summary {
  padding-top: 32px;
}
.learning-quiz__summary[hidden] { display: none; }
.learning-result {
  max-width: 28ch;
  min-height: 1.5em;
  margin: 0 0 24px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.2;
}
.learning-result:focus { outline: none; }
.learning-quiz [hidden] { display: none; }

@media (hover: hover) and (pointer: fine) {
  .learning-quiz__option input:not(:disabled) + .learning-quiz__option-label:hover {
    transform: translateY(-1px);
    border-color: var(--color-ink);
  }
  .learning-quiz [data-quiz-submit]:not(:disabled):hover,
  .learning-quiz [data-quiz-next]:not(:disabled):hover {
    border-color: var(--color-accent-hover);
    background: var(--color-accent-hover);
    color: var(--color-accent-ink);
  }
  .learning-quiz [data-quiz-retry]:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .learning-question:not([hidden]),
  .learning-quiz__summary:not([hidden]) {
    animation: learning-quiz-enter 220ms var(--ease-out) both;
  }
}

@keyframes learning-quiz-enter {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.learning-pagination { display: flex; justify-content: space-between; gap: 16px; padding-top: 24px; border-top: 1px solid var(--color-rule, #b7bec7); }
.learning-pagination a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 4px; }

@media (max-width: 960px) {
  .learning-hub { padding: 32px 0 52px; }
  .learning-layout { padding: 44px 0; }
  .learning-body { grid-template-columns: 1fr; gap: 0; }
  .learning-grid { grid-template-columns: 1fr; }
  .learning-sidebar { margin: 32px 0 0; padding: 18px 0; border-block: 1px solid var(--color-rule, #b7bec7); border-left: 0; }
  .learning-video__layout {
    height: auto;
    grid-template-columns: minmax(0, 1fr);
    overflow: visible;
  }
  .learning-video__screen { aspect-ratio: 16 / 9; }
  .learning-video__playlist { border-top: 1px solid var(--color-ink, #20262d); border-left: 0; }
  .learning-video__queue { max-height: 420px; }
}

@media (max-width: 760px) {
  .learning-video {
    margin-top: 32px;
    margin-bottom: var(--section-space-compact, 52px);
  }
  .learning-video__copy {
    padding: 22px 18px 26px;
  }
  .learning-video__queue { max-height: 360px; }
}

@media (max-width: 680px) {
  .learning-hub__header {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 14px;
    padding-bottom: 24px;
  }
  .learning-hub__routes {
    grid-template-columns: minmax(0, 1fr);
    margin-top: 10px;
  }
  .learning-hub__routes a {
    min-height: 104px;
    padding: 13px 14px;
    gap: 12px;
  }
  .learning-hub__routes a + a {
    border-top: 1px solid var(--color-rule, #b7bec7);
    border-left: 0;
  }
  .learning-hub__route-copy > span { font-size: 18px; }
  .learning-video__play { right: 12px; bottom: 12px; }
  .learning-video__copy h2,
  .learning-course__title { font-size: clamp(27px, 9vw, 36px); }
  .learning-hub__progress {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
    padding: 20px 16px;
  }
  .learning-hub__continue { width: 100%; }
  .learning-card__link {
    min-height: 0;
    grid-template-columns: minmax(0, 1fr) 24px;
    grid-template-areas:
      "number arrow"
      "body arrow"
      "state arrow";
    gap: 8px 14px;
    padding: 18px 16px;
  }
  .learning-card__number { grid-area: number; }
  .learning-card__body { grid-area: body; }
  .learning-card__state { grid-area: state; }
  .learning-card__arrow { grid-area: arrow; align-self: center; }
  .learning-card h2 { font-size: 19px; }
  .learning-card__summary { font-size: 14px; }
  .learning-author {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 14px;
  }
  .learning-author__photo { width: 72px; height: 72px; }
  .learning-quiz { padding: 24px 16px; }
  .learning-quiz__meta { margin-inline-start: 0; }
  .learning-quiz__footer { align-items: stretch; flex-direction: column; }
  .learning-quiz__actions,
  .learning-quiz__actions button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .learning-hub *,
  .learning-layout * {
    scroll-behavior: auto;
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}