@media (prefers-reduced-motion: reduce) {
  .summary-timeline-progress,
  .summary-timeline-tooltip,
  .summary-focus-progress-track span {
    transition: none !important;
  }
}

.summary-timeline {
  position: relative;
  order: -1;
  height: 78px;
  margin: -2px 2px 0;
}

.summary-timeline-track {
  position: absolute;
  right: 18px;
  bottom: 9px;
  left: 18px;
  height: 7px;
  border-radius: 999px;
  background: #dceafa;
  box-shadow: inset 0 1px 2px rgba(34, 78, 125, 0.12);
  overflow: hidden;
  transform-origin: left center;
}

.summary-timeline-progress {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #145ac9, #2f8cff, #63b9ee);
  transform: scaleX(0);
  transform-origin: left center;
}

.summary-timeline-markers {
  position: absolute;
  inset: 0 18px;
}

.summary-timeline-marker {
  --timeline-marker-color: #145ac9;
  position: absolute;
  top: calc(var(--timeline-lane) * 15px);
  left: var(--timeline-position);
  display: block;
  width: 38px;
  min-width: 38px;
  height: 38px;
  min-height: 38px;
  margin-left: -19px;
  padding: 0;
  border: 2px solid var(--timeline-marker-color);
  border-radius: 999px;
  background: #fff;
  color: var(--timeline-marker-color);
  box-shadow: 0 5px 15px rgba(20, 90, 201, 0.22);
  transition: transform 140ms ease, background-color 140ms ease;
}

.summary-timeline-marker::after {
  content: "";
  position: absolute;
  top: calc(100% + 1px);
  left: 50%;
  width: 2px;
  height: calc(38px - var(--timeline-lane) * 15px);
  background: currentColor;
  opacity: 0.22;
  transform: translateX(-50%);
}

.summary-timeline-marker:hover,
.summary-timeline-marker:focus-visible,
.summary-timeline-marker.is-active {
  background: #eef6ff;
  transform: scale(1.08);
}

.summary-timeline-marker:hover,
.summary-timeline-marker:focus-visible {
  z-index: 20;
}

.summary-timeline-marker.is-active {
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--timeline-marker-color) 18%, transparent), 0 5px 15px rgba(20, 90, 201, 0.22);
}

.summary-timeline-play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  margin-left: 2px;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 8px solid var(--timeline-marker-color);
  transform: translate(-50%, -50%);
}

.summary-timeline-tooltip {
  position: absolute;
  z-index: 30;
  bottom: calc(100% + 10px);
  left: 50%;
  display: block;
  width: max-content;
  max-width: min(300px, calc(100vw - 56px));
  padding: 8px 10px;
  border-radius: 8px;
  background: #12233b;
  color: #fff;
  font-size: 12px;
  font-weight: 750;
  line-height: 1.4;
  opacity: 0;
  pointer-events: none;
  text-align: left;
  white-space: normal;
  overflow-wrap: anywhere;
  transform: translate(-50%, 4px);
  transition: opacity 140ms ease, transform 140ms ease;
}

.summary-timeline-tooltip::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  border: 6px solid transparent;
  border-top-color: #12233b;
  transform: translateX(-50%);
}

.summary-timeline-marker:hover .summary-timeline-tooltip,
.summary-timeline-marker:focus-visible .summary-timeline-tooltip {
  opacity: 1;
  transform: translate(-50%, 0);
}

.summary-timeline-marker-edge-start .summary-timeline-tooltip {
  left: -8px;
  transform: translate(0, 4px);
}

.summary-timeline-marker-edge-start:hover .summary-timeline-tooltip,
.summary-timeline-marker-edge-start:focus-visible .summary-timeline-tooltip {
  transform: translate(0, 0);
}

.summary-timeline-marker-edge-start .summary-timeline-tooltip::after {
  left: 26px;
}

.summary-timeline-marker-edge-end .summary-timeline-tooltip {
  right: -8px;
  left: auto;
  transform: translate(0, 4px);
}

.summary-timeline-marker-edge-end:hover .summary-timeline-tooltip,
.summary-timeline-marker-edge-end:focus-visible .summary-timeline-tooltip {
  transform: translate(0, 0);
}

.summary-timeline-marker-edge-end .summary-timeline-tooltip::after {
  right: 20px;
  left: auto;
}

.summary-timeline-section-1 {
  --timeline-marker-color: #0a7a8c;
}

.summary-timeline-section-2 {
  --timeline-marker-color: #6c55b5;
}

.summary-timeline-section-3 {
  --timeline-marker-color: #b55b2a;
}

.summary-timeline.is-compact {
  height: 90px;
}

.summary-timeline.is-compact .summary-timeline-marker {
  top: calc(var(--timeline-lane) * 24px);
  width: 24px;
  min-width: 24px;
  height: 24px;
  min-height: 24px;
  margin-left: -12px;
  border: 0;
  background: transparent;
  box-shadow: none;
  transform: none;
}

.summary-timeline.is-compact .summary-timeline-marker::before {
  content: "";
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 12px;
  border: 2px solid var(--timeline-marker-color);
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 2px 7px rgba(20, 90, 201, 0.2);
  transform: translate(-50%, -50%);
  transition: width 140ms ease, height 140ms ease, background-color 140ms ease, box-shadow 140ms ease;
}

.summary-timeline.is-compact .summary-timeline-marker::after {
  top: calc(50% + 6px);
  height: calc(72px - var(--timeline-lane) * 24px);
}

.summary-timeline.is-compact .summary-timeline-marker:hover,
.summary-timeline.is-compact .summary-timeline-marker:focus-visible,
.summary-timeline.is-compact .summary-timeline-marker.is-active {
  background: transparent;
  box-shadow: none;
  transform: none;
}

.summary-timeline.is-compact .summary-timeline-marker:hover::before,
.summary-timeline.is-compact .summary-timeline-marker:focus-visible::before,
.summary-timeline.is-compact .summary-timeline-marker.is-active::before {
  width: 32px;
  height: 32px;
  background: #eef6ff;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--timeline-marker-color) 18%, transparent), 0 5px 15px rgba(20, 90, 201, 0.22);
}

.summary-timeline.is-compact .summary-timeline-play-icon {
  z-index: 2;
  display: none;
}

.summary-timeline.is-compact .summary-timeline-marker:hover .summary-timeline-play-icon,
.summary-timeline.is-compact .summary-timeline-marker:focus-visible .summary-timeline-play-icon,
.summary-timeline.is-compact .summary-timeline-marker.is-active .summary-timeline-play-icon {
  display: block;
}

.summary-video-layout {
  display: grid;
  gap: 18px;
}

.result.video-visible .summary-video-layout {
  grid-template-columns: 1fr;
}

.result.video-visible .video-shell {
  order: -1;
  margin-bottom: 0;
}

.video-shell {
  position: relative;
  overflow: hidden;
  border: 1px solid #d6e6f5;
  border-radius: 18px;
  background: #0f172a;
  aspect-ratio: 16 / 9;
}

.result.video-visible .video-shell {
  position: sticky;
  top: 0;
  z-index: 12;
  box-shadow: 0 16px 0 #f7fbff;
}

.video-shell iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-shell.video-unavailable-shell {
  aspect-ratio: auto;
}

.video-unavailable {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  min-height: 92px;
  padding: 18px 20px;
  color: #f8fafc;
  font-size: 1rem;
  line-height: 1.5;
  text-align: center;
}

.video-feedback {
  position: absolute;
  right: 14px;
  bottom: 14px;
  z-index: 2;
  padding: 7px 10px;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.86);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
  opacity: 0;
  pointer-events: none;
  transform: translateY(4px);
  transition: opacity 140ms ease, transform 140ms ease;
}

.video-feedback.video-feedback-visible {
  opacity: 1;
  transform: translateY(0);
}

html.summary-focus-open,
body.summary-focus-open {
  overflow: hidden;
  overflow: clip;
  overscroll-behavior: none;
}

.summary-focus-overlay {
  position: fixed;
  z-index: 1000;
  inset: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  min-width: 0;
  min-height: 0;
  padding: max(18px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(18px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
  overflow: hidden;
  overflow: clip;
  overscroll-behavior: none;
  background: #f7fbff;
  color: #12233b;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

.summary-focus-overlay[hidden] {
  display: none;
}

.summary-focus-overlay *,
.summary-focus-overlay *::before,
.summary-focus-overlay *::after {
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

.summary-focus-overlay ::selection {
  background: transparent;
}

.summary-focus-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  min-width: 0;
  gap: 14px;
  align-items: start;
}

.summary-focus-meta {
  min-width: 0;
}

.summary-focus-chapter,
.summary-focus-progress {
  margin: 0;
  overflow-wrap: anywhere;
}

.summary-focus-chapter {
  color: #145ac9;
  font-size: 14px;
  font-weight: 850;
  line-height: 1.35;
}

.summary-focus-progress {
  margin-top: 5px;
  color: #4d6078;
  font-size: 13px;
  font-weight: 750;
  line-height: 1.2;
}

.summary-focus-exit {
  width: auto;
}

.summary-focus-progress-track {
  width: 100%;
  min-width: 0;
  height: 5px;
  margin-top: 12px;
  border-radius: 999px;
  background: #dceafa;
  overflow: hidden;
}

.summary-focus-progress-track span {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #145ac9, #2f8cff, #63b9ee);
  transform: scaleX(0);
  transform-origin: left center;
}

.summary-focus-main {
  display: flex;
  grid-row: 3;
  grid-column: 1;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-width: 0;
  min-height: 0;
  padding: 24px 0;
  background: transparent;
  color: inherit;
  text-align: center;
  touch-action: none;
}

.summary-focus-swipe-hint {
  display: none;
  position: fixed;
  top: 50%;
  left: max(6px, env(safe-area-inset-left));
  right: max(6px, env(safe-area-inset-right));
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
  transform: translateY(-50%);
}

@media (hover: none) and (pointer: coarse) {
  .summary-focus-swipe-hint {
    display: flex;
  }
}

.summary-focus-swipe-chevron {
  display: block;
  width: clamp(28px, 7vw, 44px);
  height: clamp(28px, 7vw, 44px);
  border-top: 3px solid rgba(20, 90, 201, 0.26);
  border-left: 3px solid rgba(20, 90, 201, 0.26);
  opacity: 0.58;
}

.summary-focus-swipe-chevron-previous {
  transform: rotate(-45deg);
}

.summary-focus-swipe-chevron-next {
  transform: rotate(135deg);
}

.summary-focus-swipe-hint-dismissed .summary-focus-swipe-hint,
.summary-focus-complete .summary-focus-swipe-hint {
  display: none;
}

.summary-focus-text {
  display: block;
  width: min(980px, 100%);
  max-width: 100%;
  color: #12233b;
  font-size: clamp(28px, 5vw, 58px);
  font-weight: 850;
  line-height: 1.16;
  overflow-wrap: anywhere;
}

.summary-focus-complete .summary-focus-text {
  width: min(680px, 100%);
  color: #203650;
  font-size: clamp(28px, 4vw, 48px);
}

.summary-focus-actions {
  display: flex;
  grid-row: 4;
  min-width: 0;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.summary-focus-actions[hidden] {
  display: none;
}

@media (max-width: 720px) {
  .summary-focus-overlay {
    padding: max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
    touch-action: none;
  }

  .summary-focus-top {
    gap: 10px;
  }

  .summary-focus-exit {
    max-width: min(42vw, 180px);
    padding-inline: 12px;
    white-space: normal;
  }

  .summary-focus-main {
    padding-block: 16px;
  }

  .summary-focus-text,
  .summary-focus-complete .summary-focus-text {
    font-size: clamp(24px, 8vw, 40px);
  }

  .summary-focus-actions .secondary-button {
    max-width: 100%;
    white-space: normal;
  }
}

@media (max-width: 380px) {
  .summary-focus-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

  .summary-focus-actions .secondary-button {
    width: 100%;
  }
}

@media (max-width: 720px) {
  .result.video-visible .summary-video-layout {
    grid-template-columns: 1fr;
  }

  .result.video-visible .video-shell {
    order: -1;
    top: 0;
  }
}

:root[data-theme="dark"] .summary-focus-overlay {
  background: #0c1118;
  color: #edf4ff;
}

:root[data-theme="dark"] .summary-focus-chapter {
  color: #8fc7ff;
}

:root[data-theme="dark"] .summary-focus-progress {
  color: #a9b9cc;
}

:root[data-theme="dark"] .summary-focus-progress-track,
:root[data-theme="dark"] .summary-timeline-track {
  background: #24384e;
}

:root[data-theme="dark"] .summary-timeline-marker {
  border-color: var(--timeline-marker-color);
  background: #18283a;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.34);
}

:root[data-theme="dark"] .summary-timeline.is-compact .summary-timeline-marker {
  background: transparent;
  box-shadow: none;
}

:root[data-theme="dark"] .summary-timeline.is-compact .summary-timeline-marker::before {
  background: #18283a;
}

:root[data-theme="dark"] .summary-timeline-marker:hover,
:root[data-theme="dark"] .summary-timeline-marker:focus-visible,
:root[data-theme="dark"] .summary-timeline-marker.is-active {
  background: #22364d;
}

:root[data-theme="dark"] .summary-timeline.is-compact .summary-timeline-marker:hover,
:root[data-theme="dark"] .summary-timeline.is-compact .summary-timeline-marker:focus-visible,
:root[data-theme="dark"] .summary-timeline.is-compact .summary-timeline-marker.is-active {
  background: transparent;
}

:root[data-theme="dark"] .summary-timeline.is-compact .summary-timeline-marker:hover::before,
:root[data-theme="dark"] .summary-timeline.is-compact .summary-timeline-marker:focus-visible::before,
:root[data-theme="dark"] .summary-timeline.is-compact .summary-timeline-marker.is-active::before {
  background: #22364d;
}

:root[data-theme="dark"] .summary-timeline-tooltip {
  background: #edf4ff;
  color: #12233b;
}

:root[data-theme="dark"] .summary-timeline-tooltip::after {
  border-top-color: #edf4ff;
}

:root[data-theme="dark"] .summary-focus-main,
:root[data-theme="dark"] .summary-focus-main:hover,
:root[data-theme="dark"] .summary-focus-main:focus-visible {
  background: transparent;
  color: inherit;
  box-shadow: none;
}

:root[data-theme="dark"] .summary-focus-text {
  color: #edf4ff;
}

:root[data-theme="dark"] .summary-focus-swipe-chevron {
  border-color: rgba(143, 199, 255, 0.34);
}

:root[data-theme="dark"] .summary-focus-complete .summary-focus-text {
  color: #d9e6f5;
}

:root[data-theme="dark"] .video-shell {
  border-color: #2b4058;
}

:root[data-theme="dark"] .result.video-visible .video-shell {
  box-shadow: 0 16px 0 #101a27;
}