.transcript-reading-settings { position: relative; }
.transcript-reading-settings > summary {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  min-height: 44px;
  border-radius: 50%;
  color: var(--muted);
  font-size: 24px;
  line-height: 1;
  list-style: none;
  cursor: pointer;
}
.transcript-reading-settings > summary::-webkit-details-marker { display: none; }
.transcript-reading-settings > summary:hover { background: var(--teal-tint); }
.transcript-reading-settings > summary:focus-visible { outline: 2px solid var(--teal-deep); outline-offset: 2px; }
.transcript-reading-settings-panel {
  position: absolute;
  inset-inline-start: 0;
  top: calc(100% + 6px);
  z-index: 15;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: 0 6px 24px #0002;
  max-width: calc(100vw - 40px);
}
.transcript-reading-settings-label { display: block; margin-bottom: 8px; color: var(--muted); font-size: 12px; }
.transcript-font-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  width: min(280px, calc(100vw - 66px));
  min-height: 44px;
  padding: 4px 14px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--ink) 7%, var(--surface));
  color: var(--muted);
}
.transcript-font-small { font-size: 13px; }
.transcript-font-large { font-size: 21px; }
.transcript-font-controls span { flex-shrink: 0; line-height: 1; }
.transcript-font-controls input[type="range"] {
  flex: 1; min-width: 0; width: 100%; height: 36px;
  margin: 0;
  padding: 0; border: 0; border-radius: 999px; background: transparent;
  appearance: none; -webkit-appearance: none; cursor: pointer;
}
.transcript-font-controls input[type="range"]::-webkit-slider-runnable-track { height: 28px; background: transparent; border-radius: 999px; }
.transcript-font-controls input[type="range"]::-moz-range-track { height: 28px; background: transparent; border: 0; border-radius: 999px; }
.transcript-font-controls input[type="range"]::-webkit-slider-thumb {
  width: 28px; height: 28px; border: 0; border-radius: 50%; background: #fff;
  box-shadow: 0 2px 6px #0002; appearance: none; -webkit-appearance: none;
}
.transcript-font-controls input[type="range"]::-moz-range-thumb {
  width: 28px; height: 28px; border: 0; border-radius: 50%; background: #fff; box-shadow: 0 2px 6px #0002;
}
.transcript-font-controls input[type="range"]:focus-visible { outline: 2px solid var(--teal-deep); outline-offset: 2px; }
.transcript { font-size: var(--transcript-font-size, 16px); }
.transcript .line-zh { font-size: calc(var(--transcript-font-size, 16px) - 2px); }

/* One paragraph per speaking turn, with independently timed sentence spans. */
.transcript .transcript-turn { margin-bottom: 23px; }
.transcript .transcript-turn-heading { margin-bottom: 5px; }
.transcript .transcript-turn-time { color: var(--muted); font-variant-numeric: tabular-nums; }
.transcript .transcript-turn-body { margin: 0; }
.transcript .transcript-cue,
.transcript .transcript-cue .line-en { display: inline; }
.transcript .transcript-cue.current {
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: #b5e4d4;
  color: #064c42;
  box-shadow: inset 0 -2px 0 #168474;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.transcript .transcript-cue.current .line-zh { color: inherit; }
:root[data-theme="dark"] .transcript .transcript-cue.current {
  background: #285d52;
  color: #f1fff9;
  box-shadow: inset 0 -2px 0 #67d5b7;
}
.transcript[data-show-zh="true"] .transcript-cue { display: block; }
.transcript[data-show-zh="true"] .transcript-cue + .transcript-cue { margin-top: 9px; }

/* The resume action only appears after the learner scrolls away. */
.transcript-body > .transcript { min-width: 0; }
.guided-page .learn-text-toggle { overflow: clip; }
.transcript-follow-button {
  position: fixed;
  z-index: 51;
  left: 24px;
  bottom: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 11px 14px;
  border: 1px solid #205f59;
  border-radius: 14px;
  background: #276d66;
  color: #fff;
  box-shadow: 0 4px 14px #164a422b;
  font-family: inherit;
  font-size: 13px;
  font-weight: 650;
  line-height: 1.4;
  white-space: nowrap;
  cursor: pointer;
}
.transcript-follow-button[hidden] { display: none; }
.transcript-follow-button svg { width: 18px; height: 18px; flex: 0 0 auto; }
.transcript-follow-button:hover { background: #205e58; border-color: #1c524c; }
.transcript-follow-button:active { background: #194f4a; }
.transcript-follow-button:focus-visible { outline: 2px solid var(--teal-deep); outline-offset: 3px; }
:root[data-theme="dark"] .transcript-follow-button {
  background: #2e756d;
  border-color: #599e91;
  box-shadow: 0 4px 14px #0003;
}
:root[data-theme="dark"] .transcript-follow-button:hover { background: #368278; border-color: #79bbae; }
:root[data-theme="dark"] .transcript-follow-button:active { background: #28675f; }
:root[data-theme="dark"] .transcript-follow-button:focus-visible { outline-color: #99d6c8; }
body.has-mini-player:not(.player-collapsed) .transcript-follow-button { bottom: calc(var(--player-height, 96px) + 16px); }
/* Keep resume at the lower left and separate it from the return-to-top action. */
body.transcript-browsing .back-top { translate: 0 -60px; }
@media (min-width: 821px) and (hover: hover), (min-width: 821px) and (pointer: fine) {
  .transcript-follow-button {
    left: max(24px, var(--transcript-control-left, 24px));
    bottom: 28px;
    min-height: 48px;
    padding: 12px 22px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
  }
}
@media (max-width: 820px), (hover: none) and (pointer: coarse) {
  .transcript-usage-hint { display: none; }
  .transcript-follow-button { left: max(12px, env(safe-area-inset-left)); bottom: calc(var(--mobile-nav, 0px) + 12px); }
  body.has-mini-player:not(.player-collapsed) .transcript-follow-button {
    bottom: calc(var(--mobile-nav, 0px) + var(--player-height, 126px) + 12px);
  }
}