:root {
  --pron-accent: #0d9488;
  --pron-accent-strong: #0f766e;
  --pron-accent-soft: #e6f7f4;
  --pron-surface: #ffffff;
  --pron-surface-muted: #eef3f2;
  --pron-canvas: #f7f8f8;
  --pron-text: #0f1a1a;
  --pron-text-soft: #4a5b5a;
  --pron-text-mute: #6c7c7b;
  --pron-line: rgba(15, 26, 26, 0.12);
  --pron-line-strong: rgba(15, 26, 26, 0.2);
  --pron-shadow: 0 18px 48px rgba(13, 76, 72, 0.08);
}

.dark {
  --pron-accent: #2dd4bf;
  --pron-accent-strong: #5eead4;
  --pron-accent-soft: rgba(13, 148, 136, 0.16);
  --pron-surface: #141a1a;
  --pron-surface-muted: #1b2423;
  --pron-canvas: #0c1212;
  --pron-text: #e8f0f0;
  --pron-text-soft: rgba(232, 240, 240, 0.78);
  --pron-text-mute: rgba(232, 240, 240, 0.58);
  --pron-line: rgba(255, 255, 255, 0.12);
  --pron-line-strong: rgba(255, 255, 255, 0.2);
  --pron-shadow: 0 18px 48px rgba(0, 0, 0, 0.24);
}

.pron-page {
  width: 100%;
  min-width: 0;
  color: var(--pron-text);
}

.pron-page *,
.pron-page *::before,
.pron-page *::after {
  box-sizing: border-box;
}

.pron-context {
  margin: 0 0 0.5rem;
  color: var(--pron-accent-strong);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pron-overview-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: end;
  padding: 1rem 0 2rem;
  border-bottom: 1px solid var(--pron-line);
}

.pron-overview-header h1,
.pron-lesson-header h1 {
  margin: 0;
  max-width: 17ch;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.pron-lead,
.pron-lesson-header p:last-child {
  max-width: 62ch;
  margin: 0.9rem 0 0;
  color: var(--pron-text-soft);
  font-size: 1rem;
  line-height: 1.7;
  text-wrap: pretty;
}

.pron-overall,
.pron-lesson-score {
  display: grid;
  min-width: 9rem;
  padding-left: 1.25rem;
  border-left: 3px solid var(--pron-accent);
}

.pron-overall strong,
.pron-lesson-score strong {
  font-variant-numeric: tabular-nums;
  font-size: 1.75rem;
  line-height: 1.1;
}

.pron-overall span,
.pron-lesson-score span {
  margin-top: 0.3rem;
  color: var(--pron-text-mute);
  font-size: 0.8rem;
  font-weight: 600;
}

.pron-foundations,
.pron-next-lessons {
  padding-top: 2.25rem;
}

.pron-section-intro {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.pron-section-intro h2,
.pron-practice-heading h2 {
  margin: 0;
  font-size: clamp(1.35rem, 2.5vw, 1.8rem);
  line-height: 1.2;
  font-weight: 650;
  letter-spacing: -0.025em;
}

.pron-section-intro p,
.pron-practice-heading p {
  max-width: 62ch;
  margin: 0;
  color: var(--pron-text-soft);
  line-height: 1.6;
}

.pron-foundation-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 1rem;
}

.pron-foundation-card {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "icon copy progress"
    "icon copy arrow";
  gap: 0.25rem 1rem;
  min-width: 0;
  min-height: 11rem;
  padding: 1.35rem;
  overflow: hidden;
  border: 1px solid var(--pron-line);
  border-radius: 20px;
  background: var(--pron-surface);
  box-shadow: 0 1px 2px rgba(15, 26, 26, 0.04);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.pron-foundation-card.is-primary {
  background:
    radial-gradient(circle at 92% 8%, rgba(45, 212, 191, 0.2), transparent 40%),
    var(--pron-surface);
}

.pron-foundation-card:hover {
  transform: translateY(-2px);
  border-color: rgba(13, 148, 136, 0.46);
  box-shadow: var(--pron-shadow);
}

.pron-foundation-card:active,
.pron-lesson-row:active,
.pron-choice:active,
.pron-play-btn:active {
  transform: scale(0.985);
}

.pron-lesson-icon {
  grid-area: icon;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 14px;
  background: var(--pron-accent-soft);
  color: var(--pron-accent-strong);
  font-size: 1.05rem;
}

.pron-card-copy {
  grid-area: copy;
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.pron-card-meta {
  color: var(--pron-text-mute);
  font-size: 0.75rem;
  font-weight: 650;
}

.pron-card-copy strong {
  margin-top: 1rem;
  font-size: 1.35rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.pron-card-copy > span:last-child {
  max-width: 35ch;
  margin-top: 0.45rem;
  color: var(--pron-text-soft);
  font-size: 0.875rem;
  line-height: 1.55;
}

.pron-card-progress {
  grid-area: progress;
  align-self: start;
  color: var(--pron-text-mute);
  font-size: 0.75rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.pron-card-arrow {
  grid-area: arrow;
  align-self: end;
  justify-self: end;
  color: var(--pron-accent-strong);
}

.pron-lesson-list {
  border-top: 1px solid var(--pron-line);
}

.pron-lesson-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  gap: 1rem;
  align-items: center;
  min-width: 0;
  padding: 1rem 0.25rem;
  border-bottom: 1px solid var(--pron-line);
  transition: color 200ms ease, background 200ms ease, padding 200ms ease;
}

.pron-lesson-row:hover {
  padding-left: 0.75rem;
  padding-right: 0.75rem;
  background: var(--pron-accent-soft);
  color: var(--pron-accent-strong);
}

.pron-row-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 12px;
  background: var(--pron-surface-muted);
  color: var(--pron-accent-strong);
}

.pron-row-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.pron-row-copy strong {
  font-size: 1rem;
  font-weight: 650;
}

.pron-row-copy span {
  margin-top: 0.15rem;
  overflow: hidden;
  color: var(--pron-text-soft);
  font-size: 0.8rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pron-row-progress {
  color: var(--pron-text-mute);
  font-size: 0.75rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.pron-breadcrumb {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  color: var(--pron-text-mute);
  font-size: 0.8rem;
  font-weight: 650;
}

.pron-breadcrumb a {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--pron-accent-strong);
}

.pron-workspace {
  display: grid;
  grid-template-columns: 13.5rem minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.pron-lesson-rail {
  position: sticky;
  top: 5.25rem;
  min-width: 0;
}

.pron-lesson-rail > p {
  margin: 0 0 0.75rem;
  color: var(--pron-text-mute);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pron-lesson-rail nav {
  display: grid;
  gap: 0.3rem;
}

.pron-lesson-rail a {
  display: grid;
  grid-template-columns: 1.8rem minmax(0, 1fr) auto;
  gap: 0.55rem;
  align-items: center;
  min-width: 0;
  min-height: 2.9rem;
  padding: 0.55rem 0.65rem;
  border-radius: 12px;
  color: var(--pron-text-soft);
  font-size: 0.8rem;
  font-weight: 600;
}

.pron-lesson-rail a:hover,
.pron-lesson-rail a.is-active {
  background: var(--pron-accent-soft);
  color: var(--pron-accent-strong);
}

.pron-lesson-rail a > span:first-child {
  display: inline-flex;
  justify-content: center;
}

.pron-lesson-rail a > span:nth-child(2) {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pron-lesson-rail small {
  color: var(--pron-text-mute);
  font-size: 0.68rem;
  font-variant-numeric: tabular-nums;
}

.pron-lesson-main {
  min-width: 0;
}

.pron-lesson-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem;
  align-items: end;
  padding: 0.25rem 0 1.5rem;
}

.pron-lesson-header h1 {
  font-size: clamp(1.9rem, 4vw, 3rem);
}

.pron-player {
  padding: 1rem;
  border: 1px solid rgba(13, 148, 136, 0.28);
  border-radius: 18px;
  background: var(--pron-surface);
  box-shadow: 0 10px 30px rgba(13, 76, 72, 0.06);
}

.pron-player-status {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem;
  align-items: center;
}

.pron-player-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 12px;
  background: var(--pron-accent-soft);
  color: var(--pron-accent-strong);
}

.pron-player-status > div {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.pron-player-status strong {
  overflow: hidden;
  font-size: 0.9rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pron-player-status span:last-child {
  margin-top: 0.1rem;
  overflow: hidden;
  color: var(--pron-text-mute);
  font-size: 0.75rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pron-player-actions {
  display: grid;
  grid-template-columns: minmax(12rem, 0.75fr) minmax(13rem, 1fr) auto;
  gap: 0.75rem;
  align-items: end;
  margin-top: 0.9rem;
}

.pron-segmented {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.25rem;
  padding: 0.25rem;
  border-radius: 12px;
  background: var(--pron-surface-muted);
}

.pron-segmented button {
  min-height: 2.5rem;
  border-radius: 9px;
  color: var(--pron-text-soft);
  font-size: 0.78rem;
  font-weight: 700;
}

.pron-segmented button[aria-pressed="true"] {
  background: var(--pron-surface);
  color: var(--pron-accent-strong);
  box-shadow: 0 1px 4px rgba(15, 26, 26, 0.1);
}

.pron-rate-control {
  display: grid;
  gap: 0.35rem;
  min-width: 0;
}

.pron-rate-control > label {
  display: flex;
  justify-content: space-between;
  color: var(--pron-text-soft);
  font-size: 0.75rem;
  font-weight: 700;
}

.pron-rate-control output {
  color: var(--pron-accent-strong);
  font-variant-numeric: tabular-nums;
}

.pron-rate-control input {
  width: 100%;
  accent-color: var(--pron-accent);
}

.pron-rate-presets {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.35rem;
}

.pron-rate-presets button {
  min-height: 2rem;
  padding: 0.3rem 0.45rem;
  border: 1px solid var(--pron-line);
  border-radius: 9px;
  color: var(--pron-text-soft);
  font-size: 0.7rem;
  font-weight: 700;
}

.pron-rate-presets button[aria-pressed="true"] {
  border-color: rgba(13, 148, 136, 0.42);
  background: var(--pron-accent-soft);
  color: var(--pron-accent-strong);
}

.pron-stop-btn,
.pron-play-btn,
.pron-done-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--pron-line-strong);
  border-radius: 12px;
  color: var(--pron-text-soft);
  font-size: 0.8rem;
  font-weight: 700;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.pron-stop-btn:hover,
.pron-done-btn:hover {
  border-color: rgba(13, 148, 136, 0.48);
  background: var(--pron-accent-soft);
  color: var(--pron-accent-strong);
}

.pron-play-btn {
  border-color: transparent;
  background: var(--pron-accent-strong);
  color: #ffffff;
}

.pron-play-btn:hover {
  background: #115e59;
}

.dark .pron-play-btn {
  background: #2dd4bf;
  color: #0c1212;
}

.pron-audio-options {
  margin-top: 0.8rem;
  border-top: 1px solid var(--pron-line);
}

.pron-audio-options summary {
  width: fit-content;
  padding-top: 0.75rem;
  color: var(--pron-accent-strong);
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
}

.pron-audio-options-grid {
  display: grid;
  grid-template-columns: minmax(9rem, 0.45fr) minmax(14rem, 1fr);
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.pron-audio-options-grid label {
  display: grid;
  gap: 0.35rem;
  color: var(--pron-text-soft);
  font-size: 0.75rem;
  font-weight: 650;
}

.pron-select {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--pron-line-strong);
  border-radius: 10px;
  background: var(--pron-surface);
  color: var(--pron-text);
}

.pron-practice {
  margin-top: 1.25rem;
  padding: 1.25rem;
  border: 1px solid var(--pron-line);
  border-radius: 20px;
  background: var(--pron-surface);
}

.pron-practice-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.pron-practice-heading p {
  margin-top: 0.35rem;
  font-size: 0.86rem;
}

.pron-risk-filter {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  color: var(--pron-text-soft);
  font-size: 0.75rem;
  font-weight: 650;
}

.pron-risk-filter input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--pron-accent);
}

.pron-sound-tabs {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 1rem;
  padding-bottom: 0.2rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.pron-sound-tabs button {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.75rem;
  padding: 0.55rem 0.8rem;
  border-bottom: 2px solid transparent;
  color: var(--pron-text-mute);
  font-size: 0.78rem;
  font-weight: 700;
}

.pron-sound-tabs button[aria-pressed="true"] {
  border-bottom-color: var(--pron-accent);
  color: var(--pron-accent-strong);
}

.pron-sound-tabs span {
  font-size: 0.68rem;
  font-variant-numeric: tabular-nums;
}

.pron-choice-grid {
  display: grid;
  gap: 0.55rem;
}

.pron-alphabet-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.pron-sound-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.pron-choice {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: 5.6rem;
  padding: 0.65rem 0.4rem;
  border: 1px solid var(--pron-line);
  border-radius: 14px;
  background: var(--pron-canvas);
  color: var(--pron-text);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.pron-choice:hover,
.pron-choice.is-selected {
  border-color: rgba(13, 148, 136, 0.55);
  background: var(--pron-accent-soft);
}

.pron-choice.is-playing::after {
  content: "";
  position: absolute;
  right: 0.55rem;
  bottom: 0.55rem;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--pron-accent);
  animation: pron-pulse 700ms ease-in-out infinite alternate;
}

.pron-choice strong {
  font-size: 1.65rem;
  line-height: 1;
  letter-spacing: -0.03em;
}

.pron-choice small {
  max-width: 100%;
  margin-top: 0.45rem;
  overflow: hidden;
  color: var(--pron-text-mute);
  font-size: 0.68rem;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pron-sound-grid .pron-choice strong {
  font-family: "Noto Sans", "Segoe UI", sans-serif;
  font-size: 1.45rem;
}

.pron-selected-detail {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1rem;
  padding: 1rem;
  border-left: 3px solid var(--pron-accent);
  border-radius: 0 14px 14px 0;
  background: var(--pron-surface-muted);
}

.pron-selected-detail[hidden] {
  display: none;
}

.pron-selected-symbol {
  min-width: 4.25rem;
  font-size: 2.15rem;
  line-height: 1;
  font-weight: 700;
  text-align: center;
}

.pron-selected-copy {
  min-width: 0;
}

.pron-selected-copy h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.pron-selected-copy p {
  margin: 0.3rem 0 0;
  color: var(--pron-text-soft);
  font-size: 0.78rem;
  line-height: 1.55;
}

.pron-selected-actions {
  display: flex;
  gap: 0.5rem;
}

.pron-done-btn[aria-pressed="true"] {
  border-color: rgba(13, 148, 136, 0.5);
  background: var(--pron-accent-soft);
  color: var(--pron-accent-strong);
}

.pron-empty {
  margin: 1rem 0 0;
  padding: 1rem;
  border: 1px dashed var(--pron-line-strong);
  border-radius: 12px;
  color: var(--pron-text-soft);
  text-align: center;
}

.pron-concept-list {
  display: grid;
  gap: 1rem;
}

.pron-concept {
  display: grid;
  grid-template-columns: minmax(12rem, 0.7fr) minmax(0, 1.3fr);
  gap: 1.25rem;
  padding: 1rem 0;
  border-top: 1px solid var(--pron-line);
}

.pron-concept:first-child {
  border-top: 0;
  padding-top: 0;
}

.pron-concept-copy h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.35;
  font-weight: 700;
}

.pron-concept-copy p {
  margin: 0.45rem 0 0;
  color: var(--pron-text-soft);
  font-size: 0.8rem;
  line-height: 1.6;
}

.pron-sample-list {
  display: grid;
  gap: 0.5rem;
}

.pron-sample {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
  min-width: 0;
  min-height: 3.8rem;
  padding: 0.6rem 0.7rem;
  border-radius: 12px;
  background: var(--pron-surface-muted);
}

.pron-sample small {
  display: block;
  color: var(--pron-text-mute);
  font-size: 0.68rem;
  font-weight: 650;
}

.pron-sample strong {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.87rem;
  line-height: 1.35;
}

.pron-sample .pron-play-btn {
  width: 2.75rem;
  padding: 0;
  border-radius: 12px;
}

.pron-concept-footer {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.65rem;
}

.pron-lesson-pager {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--pron-line);
}

.pron-lesson-pager a {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  min-width: 0;
  padding: 0.6rem;
  border-radius: 12px;
  color: var(--pron-text-soft);
}

.pron-lesson-pager a:hover {
  background: var(--pron-accent-soft);
  color: var(--pron-accent-strong);
}

.pron-lesson-pager a.is-next {
  justify-content: flex-end;
  text-align: right;
}

.pron-lesson-pager span {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.pron-lesson-pager small {
  color: var(--pron-text-mute);
  font-size: 0.68rem;
}

.pron-lesson-pager strong {
  overflow: hidden;
  font-size: 0.82rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pron-page button:focus-visible,
.pron-page a:focus-visible,
.pron-page input:focus-visible,
.pron-page select:focus-visible,
.pron-page summary:focus-visible {
  outline: 3px solid rgba(13, 148, 136, 0.32);
  outline-offset: 2px;
}

@keyframes pron-pulse {
  from { transform: scale(0.85); opacity: 0.55; }
  to { transform: scale(1.25); opacity: 1; }
}

@media (max-width: 1023px) {
  .pron-workspace {
    grid-template-columns: 1fr;
  }

  .pron-lesson-rail {
    position: static;
    overflow-x: auto;
    scrollbar-width: thin;
  }

  .pron-lesson-rail > p {
    display: none;
  }

  .pron-lesson-rail nav {
    display: flex;
    gap: 0.35rem;
    padding-bottom: 0.25rem;
  }

  .pron-lesson-rail a {
    grid-template-columns: auto auto;
    flex: 0 0 auto;
    min-height: 2.75rem;
    padding: 0.55rem 0.8rem;
  }

  .pron-lesson-rail a > span:first-child,
  .pron-lesson-rail small {
    display: none;
  }

  .pron-player-actions {
    grid-template-columns: minmax(11rem, 0.8fr) minmax(12rem, 1fr) auto;
  }

  .pron-alphabet-grid,
  .pron-sound-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .pron-overview-header,
  .pron-lesson-header {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    align-items: start;
  }

  .pron-overview-header {
    padding-top: 0.25rem;
  }

  .pron-overall,
  .pron-lesson-score {
    min-width: 0;
    padding-left: 0.9rem;
  }

  .pron-foundation-grid {
    grid-template-columns: 1fr;
  }

  .pron-foundation-card {
    min-height: 9.5rem;
  }

  .pron-workspace {
    gap: 1rem;
  }

  .pron-player-actions {
    grid-template-columns: 1fr;
  }

  .pron-stop-btn {
    width: 100%;
  }

  .pron-audio-options-grid {
    grid-template-columns: 1fr;
  }

  .pron-practice {
    padding: 1rem;
    border-radius: 16px;
  }

  .pron-practice-heading {
    align-items: start;
    flex-direction: column;
  }

  .pron-risk-filter {
    width: 100%;
  }

  .pron-alphabet-grid,
  .pron-sound-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .pron-selected-detail {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .pron-selected-actions {
    grid-column: 1 / -1;
  }

  .pron-selected-actions > * {
    flex: 1 1 0;
  }

  .pron-concept {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

@media (max-width: 479px) {
  .pron-overview-header h1,
  .pron-lesson-header h1 {
    font-size: 2rem;
  }

  .pron-row-copy span {
    display: none;
  }

  .pron-row-progress {
    font-size: 0.68rem;
  }

  .pron-card-copy strong {
    font-size: 1.2rem;
  }

  .pron-alphabet-grid,
  .pron-sound-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .pron-choice {
    min-height: 5rem;
  }

  .pron-lesson-pager {
    grid-template-columns: 1fr;
  }

  .pron-lesson-pager > span:empty {
    display: none;
  }

  .pron-lesson-pager a.is-next {
    justify-content: flex-start;
    text-align: left;
  }

  .pron-lesson-pager a.is-next span {
    order: 2;
  }

  .pron-lesson-pager a.is-next i {
    order: 1;
    transform: rotate(180deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .pron-foundation-card,
  .pron-lesson-row,
  .pron-choice,
  .pron-play-btn,
  .pron-stop-btn,
  .pron-done-btn {
    transition: none;
  }

  .pron-choice.is-playing::after {
    animation: none;
  }
}