.presentations-page .presentation-page-head,
.presentations-index .presentation-hero {
  background:
    radial-gradient(circle at 12% 18%, color-mix(in oklab, var(--bs-primary) 18%, transparent) 0, transparent 55%),
    linear-gradient(135deg, color-mix(in oklab, var(--bs-primary-400) 18%, var(--bs-body-bg)) 0%, var(--bs-body-bg) 100%);
  border-bottom: 1px solid var(--bs-border-color);
}

.presentations-page .presentation-page-head {
  padding: 1.4rem 0;
}

.presentation-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  margin-bottom: .45rem;
  color: var(--bs-muted);
  font-size: .9rem;
}

.presentation-breadcrumb a {
  text-decoration: none;
}

.presentation-title-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.presentation-title-row h1,
.presentations-page h1 {
  margin: .15rem 0;
  color: var(--bs-heading);
  line-height: 1.15;
}

.presentation-head-actions {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
}

.presentation-list-section {
  padding: 1.4rem 1rem 2.2rem;
}

.presentation-chapter-grid,
.presentation-deck-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: .85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 840px) {
  .presentation-chapter-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.presentation-list-card {
  border: 1px solid var(--bs-border-color);
  border-radius: .5rem;
  background: var(--bs-surface);
  box-shadow: var(--shadow-sm);
  padding: 1rem;
}

.presentation-list-card h2,
.presentation-list-card h3 {
  margin: .15rem 0 .5rem;
}

.presentation-list-card a {
  text-decoration: none;
}

.presentation-topic-links {
  margin: .7rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .35rem;
}

.presentation-topic-links a {
  display: block;
  border: 1px solid var(--bs-border-color);
  border-radius: .45rem;
  padding: .45rem .55rem;
  background: var(--bs-surface-2);
}

.presentation-deck-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  color: inherit;
}

.presentation-deck-link strong {
  display: block;
  color: var(--bs-heading);
  font-size: 1.05rem;
}

.presentation-link-arrow {
  font-size: 1.8rem;
  line-height: 1;
  color: var(--bs-primary);
}

.presentation-shell {
  display: grid;
  gap: 1rem;
  padding-top: 1rem;
  padding-bottom: 2rem;
}

@media (min-width: 1040px) {
  .presentation-shell {
    grid-template-columns: 280px minmax(0, 1fr);
    align-items: start;
  }
}

.presentation-outline {
  border: 1px solid var(--bs-border-color);
  border-radius: .5rem;
  background: var(--bs-surface);
  padding: .85rem;
  box-shadow: var(--shadow-sm);
}

@media (min-width: 1040px) {
  .presentation-outline {
    position: sticky;
    top: 5rem;
  }
}

.presentation-outline h2 {
  margin: 0 0 .65rem;
  font-size: 1rem;
  color: var(--bs-heading);
}

.presentation-outline ol {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: .4rem;
}

.presentation-outline a {
  text-decoration: none;
}

.presentation-outline .is-active a {
  color: var(--bs-heading);
  font-weight: 700;
}

.presentation-deck-panel {
  min-width: 0;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
}

.presentation-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
  border: 1px solid var(--bs-border-color);
  border-radius: .5rem .5rem 0 0;
  padding: .65rem .75rem;
  background: var(--bs-surface);
}

.presentation-counter {
  font-weight: 700;
  color: var(--bs-heading);
}

.presentation-controls {
  display: flex;
  gap: .45rem;
  flex-wrap: wrap;
}

.presentation-progress {
  height: .3rem;
  background: var(--bs-surface-2);
  border-left: 1px solid var(--bs-border-color);
  border-right: 1px solid var(--bs-border-color);
  overflow: hidden;
}

.presentation-progress span {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--bs-primary), var(--bs-primary-400));
  transition: width .18s ease;
}

.presentation-deck-workspace {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  border: 1px solid var(--bs-border-color);
  border-top: 0;
  border-radius: 0 0 .5rem .5rem;
  background: var(--bs-surface);
  padding: clamp(.75rem, 2vw, 1.2rem);
  box-shadow: var(--shadow-sm);
}

@media (min-width: 1180px) {
  .presentation-deck-workspace {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
    align-items: start;
  }
}

.presentation-current-slide {
  min-width: 0;
  outline: none;
}

.presentation-current-slide:empty {
  display: none;
}

.presentation-current-slide .presentation-topic {
  height: 100%;
}

.presentation-current-slide .presentation-slide {
  height: 100%;
}

.presentation-preview-rail {
  border: 1px solid var(--bs-border-color);
  border-radius: .5rem;
  background: var(--bs-surface);
  padding: .75rem;
  max-height: calc(100vh - 8rem);
  overflow: auto;
}

.presentation-preview-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .65rem;
  margin-bottom: .7rem;
}

.presentation-preview-head h2 {
  margin: 0;
  color: var(--bs-heading);
  font-size: 1rem;
}

.presentation-preview-head span {
  color: var(--bs-muted);
  font-size: .78rem;
}

.presentation-stage {
  min-width: 0;
}

.presentation-preview-rail .presentation-stage {
  border: 0;
  border-radius: 0;
  background: transparent;
  padding: 0;
  box-shadow: none;
}

.presentation-topic {
  display: grid;
  gap: 1rem;
}

.presentation-slide {
  border: 1px solid var(--bs-border-color);
  border-radius: .5rem;
  background: var(--bs-body-bg);
  padding: clamp(1rem, 4vw, 2rem);
  min-height: min(68vh, 680px);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: .75rem;
  overflow-x: auto;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

.presentation-deck.is-js .presentation-slide[hidden] {
  display: none !important;
}

.presentation-preview-rail .presentation-topic {
  gap: .75rem;
}

.presentation-preview-rail .presentation-slide {
  min-height: 0;
  height: auto;
  padding: .75rem;
  justify-content: flex-start;
  gap: .4rem;
  overflow: visible;
  cursor: pointer;
  background: var(--bs-surface-2);
  opacity: .88;
  transition: opacity .15s ease, border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}

.presentation-preview-rail .presentation-slide:hover,
.presentation-preview-rail .presentation-slide:focus-visible {
  opacity: 1;
  border-color: var(--bs-primary);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--bs-primary) 18%, transparent);
  outline: none;
}

.presentation-preview-rail .presentation-slide.is-active {
  opacity: 1;
  border-color: var(--bs-primary);
  box-shadow: inset 4px 0 0 var(--bs-primary), var(--shadow-sm);
}

.presentation-deck:fullscreen {
  width: 100vw;
  height: 100vh;
  max-width: none;
  margin: 0;
  padding: 1rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: stretch;
  background: var(--bs-body-bg);
  overflow: hidden;
}

.presentation-deck:fullscreen .presentation-outline {
  display: none;
}

.presentation-deck:fullscreen .presentation-deck-panel {
  min-height: 0;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
}

.presentation-deck:fullscreen .presentation-deck-workspace {
  min-height: 0;
  height: 100%;
  grid-template-columns: minmax(0, 1fr);
  overflow: hidden;
}

.presentation-deck:fullscreen .presentation-current-slide {
  min-height: 0;
  height: 100%;
  overflow: hidden;
  display: grid;
}

.presentation-deck:fullscreen .presentation-current-slide .presentation-topic,
.presentation-deck:fullscreen .presentation-current-slide .presentation-slide {
  min-height: 0;
  height: 100%;
}

.presentation-deck:fullscreen .presentation-preview-rail {
  display: none;
}

.presentation-deck:fullscreen .presentation-stage,
.presentation-deck:fullscreen .presentation-preview-rail .presentation-topic {
  min-height: 0;
}

.presentation-deck:fullscreen .presentation-preview-rail .presentation-slide {
  height: auto;
}

.presentation-deck:fullscreen .presentation-topic {
  height: 100%;
}

.presentation-deck:fullscreen .presentation-slide {
  min-height: 0;
  height: 100%;
}

.presentation-deck:fullscreen .presentation-preview-rail .presentation-slide {
  min-height: 0;
  height: auto;
}

@media (max-width: 840px) {
  .presentation-deck:fullscreen {
    grid-template-columns: 1fr;
    padding: .75rem;
  }

  .presentation-deck:fullscreen .presentation-outline {
    display: none;
  }

  .presentation-deck:fullscreen .presentation-deck-workspace {
    grid-template-columns: 1fr;
    overflow: auto;
  }
}

.presentation-slide h2 {
  margin: 0;
  color: var(--bs-heading);
  font-size: clamp(1.45rem, 3vw, 2.5rem);
  line-height: 1.12;
}

.presentation-preview-rail .presentation-slide h2 {
  font-size: .98rem;
  line-height: 1.2;
}

.presentation-slide h3 {
  margin: .2rem 0;
  color: var(--bs-heading);
}

.presentation-preview-rail .presentation-slide h3 {
  font-size: .86rem;
}

.slide-kicker,
.presentations-page .section-kicker {
  margin: 0;
  color: var(--bs-primary-600);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .78rem;
}

.presentation-slide p,
.presentation-slide li {
  font-size: clamp(1rem, 1.45vw, 1.18rem);
}

.presentation-preview-rail .presentation-slide p,
.presentation-preview-rail .presentation-slide li {
  font-size: .78rem;
  line-height: 1.35;
}

.presentation-preview-rail .slide-kicker {
  font-size: .62rem;
}

.presentation-slide ul,
.presentation-slide ol {
  margin: .25rem 0;
  padding-left: 1.25rem;
}

.presentation-slide .slide-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: center;
}

@media (min-width: 840px) {
  .presentation-slide .slide-grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, .9fr);
  }
}

.presentation-preview-rail .presentation-slide .slide-grid {
  grid-template-columns: 1fr;
  gap: .45rem;
}

.presentation-slide figure {
  margin: .5rem 0;
}

.presentation-slide svg,
.presentation-slide canvas {
  max-width: 100%;
  height: auto;
}

.presentation-preview-rail .presentation-slide svg,
.presentation-preview-rail .presentation-slide canvas {
  max-height: 150px;
}

.presentation-slide table {
  width: 100%;
  border-collapse: collapse;
  font-size: .95rem;
}

.presentation-preview-rail .presentation-slide table {
  font-size: .68rem;
}

.presentation-slide th,
.presentation-slide td {
  border: 1px solid var(--bs-border-color);
  padding: .45rem .55rem;
  text-align: left;
}

.presentation-preview-rail .presentation-slide th,
.presentation-preview-rail .presentation-slide td {
  padding: .25rem .3rem;
}

.presentation-slide th {
  background: var(--bs-surface-2);
  color: var(--bs-heading);
}

.presentation-slide details {
  border: 1px solid var(--bs-border-color);
  border-radius: .5rem;
  padding: .75rem;
  background: var(--bs-surface);
}

.presentation-slide summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--bs-heading);
}

@media (max-width: 640px) {
  .presentation-controls {
    width: 100%;
  }

  .presentation-controls .btn {
    flex: 1 1 auto;
    text-align: center;
  }

  .presentation-slide {
    min-height: auto;
  }

  .presentation-preview-rail {
    max-height: 55vh;
  }
}

@media print {
  .presentation-outline,
  .presentation-current-slide,
  .presentation-toolbar,
  .presentation-progress,
  .presentation-head-actions,
  .site-header,
  .site-footer {
    display: none !important;
  }

  .presentation-shell,
  .presentation-deck-workspace,
  .presentation-preview-rail,
  .presentation-stage,
  .presentation-topic {
    display: block;
    padding: 0;
    border: 0;
    box-shadow: none;
  }

  .presentation-preview-head {
    display: none;
  }

  .presentation-slide,
  .presentation-deck.is-js .presentation-slide[hidden] {
    display: block !important;
    min-height: auto;
    page-break-after: always;
    border: 1px solid #999;
    background: #fff;
    color: #111;
  }
}

/* -------------------------------------------------------
   Presentation deck layout polish
   Main slide = interactive
   Right rail = small, inert slide navigation
------------------------------------------------------- */

.presentation-deck-workspace {
  align-items: start;
  gap: 1.1rem;
}

@media (min-width: 1180px) {
  .presentation-deck-workspace {
    grid-template-columns: minmax(0, 1fr) 260px;
  }
}

.presentation-current-slide {
  min-width: 0;
  width: 100%;
}

.presentation-current-slide .presentation-topic {
  width: 100%;
}

.presentation-current-slide .presentation-slide {
  min-height: min(72vh, 760px);
  width: 100%;
}

.presentation-current-slide .presentation-slide > :first-child {
  margin-block-start: auto;
}

.presentation-current-slide .presentation-slide > :last-child {
  margin-block-end: auto;
}

/* Right slide navigator */
.presentation-preview-rail {
  align-self: start;
  border-radius: 1rem;
  padding: 0.85rem;
  max-height: calc(100vh - 9rem);
  overflow: auto;
  background: color-mix(in oklab, var(--bs-surface) 94%, var(--bs-primary) 6%);
}

.presentation-preview-head {
  position: sticky;
  top: 0;
  z-index: 2;
  background: color-mix(in oklab, var(--bs-surface) 94%, var(--bs-primary) 6%);
  padding-bottom: 0.65rem;
  margin-bottom: 0.65rem;
}

.presentation-preview-head h2 {
  font-size: 0.95rem;
}

.presentation-preview-head span {
  font-size: 0.72rem;
}

/* Generated thumbnail list */
.presentation-slide-list {
  display: grid;
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.presentation-slide-list-item {
  margin: 0;
  padding: 0;
}

.presentation-slide-thumb {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.55rem;
  width: 100%;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.85rem;
  background: var(--bs-surface);
  color: var(--bs-body-color);
  cursor: pointer;
  padding: 0.65rem;
  text-align: left;
  box-shadow: var(--shadow-sm);
  transition:
    border-color 0.16s ease,
    box-shadow 0.16s ease,
    transform 0.16s ease,
    background 0.16s ease;
}

.presentation-slide-thumb:hover,
.presentation-slide-thumb:focus-visible {
  border-color: var(--bs-primary);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--bs-primary) 20%, transparent);
  outline: none;
}

.presentation-slide-thumb.is-active {
  border-color: var(--bs-primary);
  background: color-mix(in oklab, var(--bs-primary) 9%, var(--bs-surface));
  box-shadow:
    inset 4px 0 0 var(--bs-primary),
    var(--shadow-sm);
}

.presentation-slide-thumb-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 999px;
  background: var(--bs-primary);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1;
}

.presentation-slide-thumb-title {
  min-width: 0;
  color: var(--bs-heading);
  font-size: 0.86rem;
  font-weight: 800;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

/* Optional visual preview inside the thumbnail */
.presentation-slide-thumb-preview {
  grid-column: 1 / -1;
  height: 120px;
  overflow: hidden;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.7rem;
  background: var(--bs-body-bg);
  pointer-events: none;
  position: relative;
}

.presentation-slide-thumb-preview .presentation-topic {
  display: block;
  width: 760px;
  transform: scale(0.285);
  transform-origin: top left;
  pointer-events: none;
}

.presentation-slide-thumb-preview .presentation-slide {
  display: block !important;
  width: 760px;
  min-height: 420px;
  height: 420px;
  max-height: 420px;
  overflow: hidden;
  padding: 1.25rem;
  pointer-events: none;
  box-shadow: none;
  border-radius: 1rem;
}

.presentation-slide-thumb-preview .presentation-slide * {
  pointer-events: none !important;
}

.presentation-slide-thumb-preview button,
.presentation-slide-thumb-preview input,
.presentation-slide-thumb-preview select,
.presentation-slide-thumb-preview textarea,
.presentation-slide-thumb-preview a,
.presentation-slide-thumb-preview details,
.presentation-slide-thumb-preview summary {
  pointer-events: none !important;
}

/* Make thumbnail text readable but not huge */
.presentation-slide-thumb-preview h1,
.presentation-slide-thumb-preview h2 {
  font-size: 2rem !important;
  line-height: 1.1 !important;
}

.presentation-slide-thumb-preview h3 {
  font-size: 1.1rem !important;
}

.presentation-slide-thumb-preview p,
.presentation-slide-thumb-preview li {
  font-size: 0.95rem !important;
  line-height: 1.35 !important;
}

.presentation-slide-thumb-preview svg,
.presentation-slide-thumb-preview canvas {
  max-height: 170px;
}

/* Remove old preview behavior if old classes still exist */
.presentation-preview-rail .presentation-stage {
  display: none;
}

.presentation-preview-rail .presentation-preview-slide {
  pointer-events: none;
}

/* Better responsive behavior */
@media (max-width: 1179px) {
  .presentation-preview-rail {
    max-height: none;
  }

  .presentation-slide-list {
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  }

  .presentation-slide-thumb-preview {
    height: 105px;
  }
}

@media (max-width: 720px) {
  .presentation-deck-workspace {
    padding: 0.75rem;
  }

  .presentation-preview-rail {
    padding: 0.7rem;
  }

  .presentation-slide-list {
    grid-template-columns: 1fr;
  }

  .presentation-slide-thumb-preview {
    display: none;
  }

  .presentation-current-slide .presentation-slide {
    min-height: auto;
  }
}

/* Fullscreen polish */
.presentation-deck:fullscreen .presentation-deck-workspace {
  grid-template-columns: minmax(0, 1fr);
}

.presentation-deck:fullscreen .presentation-preview-rail {
  display: none;
}

.presentation-deck:fullscreen .presentation-slide-thumb-preview {
  height: 110px;
}

@media (max-width: 900px) {
  .presentation-deck:fullscreen .presentation-deck-workspace {
    grid-template-columns: 1fr;
  }

  .presentation-deck:fullscreen .presentation-preview-rail {
    display: none;
  }
}

/* Mobile presentation layout */
.presentation-outline-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
}

.presentation-outline-head h2 {
  margin-bottom: 0;
}

.presentation-outline-toggle {
  display: none;
  min-height: 2.75rem;
  border: 1px solid var(--bs-border-color);
  border-radius: .45rem;
  padding: .55rem .7rem;
  background: var(--bs-surface-2);
  color: var(--bs-heading);
  font: inherit;
  font-size: .85rem;
  font-weight: 800;
  cursor: pointer;
}

.presentation-deck,
.presentation-deck-panel,
.presentation-deck-workspace,
.presentation-current-slide,
.presentation-current-slide .presentation-topic,
.presentation-current-slide .presentation-slide {
  min-width: 0;
  max-width: 100%;
}

.presentation-current-slide .presentation-slide *,
.presentation-breadcrumb *,
.presentation-title-row * {
  overflow-wrap: anywhere;
}

.presentation-current-slide :where(img, svg, canvas, video, iframe, object, embed) {
  max-width: 100%;
}

.presentation-current-slide :where(input, select, textarea, button) {
  max-width: 100%;
}

.presentation-current-slide :where(pre, code, .MathJax, mjx-container) {
  max-width: 100%;
}

.presentation-current-slide :where(pre, mjx-container[display="true"]) {
  overflow-x: auto;
  overflow-y: hidden;
}

.presentation-current-slide :where([class*="table-wrap"], [class*="table-scroll"]) {
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
}

@media screen and (max-width: 1039px) {
  .presentation-shell {
    width: 100%;
    max-width: 100%;
  }

  .presentation-outline {
    padding: .7rem .8rem;
  }

  .presentation-outline-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .presentation-deck.is-js .presentation-outline:not(.is-open) [data-presentation-outline-list] {
    display: none;
  }

  .presentation-outline ol {
    margin-top: .75rem;
    max-height: 50vh;
    overflow-y: auto;
    overscroll-behavior: contain;
  }
}

@media screen and (max-width: 720px) {
  .presentations-page .presentation-page-head {
    padding: 1rem 0;
  }

  .presentation-breadcrumb {
    gap: .25rem;
    font-size: .8rem;
    line-height: 1.35;
  }

  .presentation-title-row {
    align-items: stretch;
    gap: .75rem;
  }

  .presentation-title-row > div:first-child {
    min-width: 0;
    width: 100%;
  }

  .presentation-title-row h1,
  .presentations-page .presentation-title-row h1 {
    font-size: 1.75rem;
    line-height: 1.15;
  }

  .presentation-title-row .page-sub {
    font-size: .9rem;
    line-height: 1.4;
  }

  .presentation-head-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
  }

  .presentation-head-actions .btn {
    width: 100%;
    min-width: 0;
    min-height: 2.75rem;
    padding-inline: .55rem;
    white-space: normal;
  }

  .presentation-shell {
    gap: .65rem;
    padding: .65rem .5rem 1.5rem;
  }

  .presentation-outline {
    border-radius: .45rem;
    box-shadow: none;
  }

  .presentation-outline ol {
    padding-left: 1.05rem;
    font-size: .9rem;
  }

  .presentation-toolbar {
    display: grid;
    grid-template-columns: 1fr;
    gap: .6rem;
    padding: .6rem;
  }

  .presentation-counter {
    font-size: .9rem;
    text-align: center;
  }

  .presentation-controls {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .45rem;
    width: 100%;
  }

  .presentation-controls .btn {
    width: 100%;
    min-width: 0;
    min-height: 2.75rem;
    padding: .55rem .4rem;
    white-space: normal;
  }

  .presentation-controls [data-presentation-fullscreen] {
    grid-column: 1 / -1;
  }

  .presentation-deck-workspace {
    gap: .75rem;
    padding: .45rem;
    border-radius: 0 0 .45rem .45rem;
  }

  .presentation-current-slide .presentation-topic {
    gap: .65rem;
  }

  .presentation-current-slide .presentation-slide {
    width: 100%;
    min-height: 0;
    height: auto;
    padding: .7rem;
    border-radius: .45rem;
    gap: .65rem;
    overflow-x: auto;
    overflow-y: visible;
    -webkit-overflow-scrolling: touch;
  }

  .presentation-current-slide .presentation-slide h2 {
    font-size: 1.35rem;
    line-height: 1.15;
  }

  .presentation-current-slide .presentation-slide h3 {
    font-size: 1.05rem;
    line-height: 1.25;
  }

  .presentation-current-slide .presentation-slide p,
  .presentation-current-slide .presentation-slide li {
    font-size: .95rem;
    line-height: 1.5;
  }

  .presentation-current-slide .presentation-slide .slide-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: .75rem;
  }

  .presentation-current-slide .presentation-slide figure {
    min-width: 0;
    margin: .35rem 0;
  }

  .presentation-current-slide .presentation-slide table {
    font-size: .82rem;
  }

  .presentation-current-slide .presentation-slide th,
  .presentation-current-slide .presentation-slide td {
    padding: .35rem .4rem;
  }

  .presentation-preview-rail {
    width: 100%;
    max-width: 100%;
    max-height: none;
    padding: .6rem;
    border-radius: .45rem;
    overflow: hidden;
  }

  .presentation-preview-head {
    position: static;
    padding-bottom: .5rem;
    margin-bottom: .5rem;
  }

  .presentation-slide-list {
    display: grid;
    grid-template-columns: none;
    grid-auto-flow: column;
    grid-auto-columns: minmax(160px, 75vw);
    gap: .55rem;
    max-width: 100%;
    padding: 0 0 .35rem;
    overflow-x: auto;
    overflow-y: hidden;
    overscroll-behavior-inline: contain;
    scroll-snap-type: inline proximity;
    scrollbar-width: thin;
    -webkit-overflow-scrolling: touch;
  }

  .presentation-slide-list-item {
    min-width: 0;
    scroll-snap-align: start;
  }

  .presentation-slide-thumb {
    height: 100%;
    min-height: 4.25rem;
    padding: .55rem;
    border-radius: .45rem;
  }

  .presentation-slide-thumb-preview {
    display: none;
  }

  .presentation-slide-thumb-number {
    flex: 0 0 auto;
    width: 1.45rem;
    height: 1.45rem;
  }

  .presentation-slide-thumb-title {
    font-size: .82rem;
  }

  .presentation-deck:fullscreen {
    width: 100vw;
    width: 100dvw;
    height: 100vh;
    height: 100dvh;
    padding:
      max(.35rem, env(safe-area-inset-top))
      max(.35rem, env(safe-area-inset-right))
      max(.35rem, env(safe-area-inset-bottom))
      max(.35rem, env(safe-area-inset-left));
    grid-template-columns: minmax(0, 1fr);
    overflow: hidden;
  }

  .presentation-deck:fullscreen .presentation-deck-panel {
    min-height: 0;
    height: 100%;
  }

  .presentation-deck:fullscreen .presentation-toolbar {
    flex: 0 0 auto;
  }

  .presentation-deck:fullscreen .presentation-deck-workspace {
    min-height: 0;
    height: 100%;
    padding: .35rem;
    overflow: hidden;
  }

  .presentation-deck:fullscreen .presentation-current-slide,
  .presentation-deck:fullscreen .presentation-current-slide .presentation-topic {
    min-height: 0;
    height: 100%;
  }

  .presentation-deck:fullscreen .presentation-current-slide .presentation-slide {
    min-height: 0;
    height: 100%;
    padding: .65rem;
    overflow-x: auto;
    overflow-y: auto;
    overscroll-behavior: contain;
  }
}

@media screen and (max-width: 420px) {
  .presentation-head-actions {
    grid-template-columns: minmax(0, 1fr);
  }

  .presentation-slide-list {
    grid-auto-columns: minmax(150px, 82vw);
  }
}

/* Fullscreen is presentation-only at every viewport size. */
.presentation-deck:fullscreen {
  grid-template-columns: minmax(0, 1fr);
}

.presentation-deck:fullscreen .presentation-outline,
.presentation-deck:fullscreen .presentation-preview-rail {
  display: none !important;
}

.presentation-deck:fullscreen .presentation-deck-panel,
.presentation-deck:fullscreen .presentation-deck-workspace,
.presentation-deck:fullscreen .presentation-current-slide {
  min-width: 0;
  width: 100%;
}

.presentation-deck:fullscreen .presentation-deck-workspace {
  grid-template-columns: minmax(0, 1fr);
}

/* Height-responsive slide viewport with top-safe overflow. */
.presentation-deck:not(:fullscreen) .presentation-current-slide .presentation-slide {
  height: min(72dvh, 48rem);
  min-height: min(28rem, 72dvh);
  max-height: min(72dvh, 48rem);
  overflow-x: auto;
  overflow-y: auto;
}

.presentation-deck:fullscreen .presentation-current-slide .presentation-slide {
  min-height: 0;
  height: 100%;
  max-height: 100%;
  overflow-x: auto;
  overflow-y: auto;
}