.reveal .title-scattering-slide {
  padding-top: 0 !important;
  text-align: left;
}

.reveal .title-scattering-slide h2 {
  display: none;
}

.reveal .title-scattering-layout {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 3.2rem;
  align-items: center;
  min-height: 760px;
}

.reveal .title-scattering-copy h1 {
  margin: 0;
  color: #ffffff;
  font-size: 2.05em;
  line-height: 1.08;
  text-transform: none;
}

.reveal .title-scattering-copy .quote {
  margin: 1.25rem 0 3.6rem;
  color: #d8d8d8;
  font-size: 0.82em;
  line-height: 1.28;
}

.reveal .title-scattering-copy .meta {
  color: #f2f2f2;
  font-size: 0.72em;
  line-height: 1.45;
}

.reveal .title-scattering-copy .author {
  font-weight: 700;
}

.reveal .title-scattering-copy .date {
  margin-top: 1.4rem;
  color: #d8d8d8;
}

.reveal .scattering-stage {
  width: 100%;
}

.reveal .scattering-stage svg {
  display: block;
  width: 100%;
  height: auto;
}

.reveal .scattering-panel-title {
  fill: #ffffff;
  font-size: 24px;
  font-weight: 700;
}

.reveal .scattering-panel-subtitle {
  fill: #bdbdbd;
  font-size: 16px;
}

.reveal .trajectory {
  fill: none;
  stroke: rgba(255, 255, 255, 0.42);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 10 12;
}

.reveal .center-line {
  stroke: rgba(142, 197, 255, 0.18);
  stroke-width: 2;
}

.reveal .charge-orbit circle {
  stroke: rgba(255, 255, 255, 0.9);
  stroke-width: 3;
}

.reveal .charge-orbit text {
  fill: #101010;
  font-size: 23px;
  font-weight: 800;
  text-anchor: middle;
  dominant-baseline: central;
}

.reveal .charge-positive {
  fill: #ffcc4d;
}

.reveal .charge-negative {
  fill: #8ec5ff;
}

.reveal .field-ring {
  fill: none;
  stroke: rgba(255, 255, 255, 0.12);
  stroke-width: 2;
}

@keyframes pulse-field {
  0%,
  100% {
    opacity: 0.22;
    transform: scale(0.96);
  }

  50% {
    opacity: 0.55;
    transform: scale(1.04);
  }
}

.reveal .field-pulse {
  animation: pulse-field 3.2s ease-in-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.reveal .interference-widget {
  width: min(100%, 1240px);
  margin: 0 auto;
  color: #f2f2f2;
  font-size: 0.52em;
}

.reveal .interference-tabs {
  display: flex;
  gap: 0.35rem;
  align-items: center;
  margin: 0 0 0.45rem;
  padding: 0;
}

.reveal .interference-tabs button,
.reveal .interference-controls select,
.reveal .interference-controls input,
.reveal .interference-controls output {
  font: inherit;
}

.reveal .interference-tabs button {
  appearance: none;
  min-height: 2.15rem;
  padding: 0.25rem 0.72rem;
  border: 1px solid #34445c;
  border-radius: 7px;
  background: #101722;
  color: #d7dde8;
  cursor: pointer;
}

.reveal .interference-tabs button[aria-selected="true"] {
  border-color: #8ec5ff;
  background: #8ec5ff;
  color: #050505;
}

.reveal .interference-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.2rem;
  align-items: center;
  margin: 0 0 0.5rem;
}

.reveal .interference-controls label {
  display: grid;
  grid-template-columns: auto auto auto;
  gap: 0.5rem;
  align-items: center;
  margin: 0;
}

.reveal .interference-controls label:first-child {
  grid-template-columns: auto auto;
}

.reveal .interference-controls span {
  color: #b8c4d8;
}

.reveal .interference-controls select {
  min-height: 2rem;
  border: 1px solid #34445c;
  border-radius: 7px;
  background: #101722;
  color: #f2f2f2;
}

.reveal .interference-controls input[type="range"] {
  width: 11rem;
  accent-color: #58a6ff;
}

.reveal .interference-controls output {
  min-width: 3.4rem;
  padding: 0.12rem 0.28rem;
  border: 1px solid #34445c;
  border-radius: 6px;
  background: #101722;
  color: #f2f2f2;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.reveal .interference-plot svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 610px;
}

.reveal .interference-bg {
  fill: #070a0f;
  stroke: #243244;
  stroke-width: 1.2;
}

.reveal .interference-panel {
  fill: #0b111b;
  stroke: #303b4f;
  stroke-width: 1.2;
}

.reveal .interference-grid {
  stroke: #1e2a3b;
  stroke-width: 1;
}

.reveal .interference-axis {
  stroke: #d7dde8;
  stroke-width: 1.8;
}

.reveal .interference-arrow {
  stroke: #d7dde8;
  stroke-width: 4;
  stroke-linecap: round;
}

.reveal .interference-tick {
  fill: #9fb0c7;
  font-size: 15px;
  text-anchor: middle;
}

.reveal .interference-axis-label,
.reveal .interference-label,
.reveal .interference-summary {
  fill: #d7dde8;
}

.reveal .interference-axis-label {
  font-size: 18px;
}

.reveal .interference-title {
  fill: #ffffff;
  font-size: 30px;
  font-weight: 700;
}

.reveal .interference-subtitle {
  fill: #b8c4d8;
  font-size: 17px;
}

.reveal .interference-label {
  font-size: 17px;
}

.reveal .interference-label-left {
  text-anchor: end;
}

.reveal .interference-summary {
  font-size: 18px;
}

.reveal .interference-centerline {
  stroke: #8ec5ff;
  stroke-width: 2;
  stroke-dasharray: 6 7;
  opacity: 0.78;
}

.reveal .interference-curve {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.reveal .interference-initial {
  stroke: #d7dde8;
  stroke-width: 4;
}

.reveal .interference-ghost {
  stroke: #d7dde8;
  stroke-width: 3;
  stroke-dasharray: 8 8;
  opacity: 0.48;
}

.reveal .interference-interaction {
  stroke: #58a6ff;
  stroke-width: 4;
}

.reveal .interference-final {
  stroke: #ffcc4d;
  stroke-width: 4.5;
  filter: url(#qi-glow);
}

.reveal .interference-constructive {
  fill: rgba(88, 166, 255, 0.16);
}

.reveal .interference-destructive {
  fill: rgba(255, 117, 117, 0.14);
}

.reveal .interference-draw {
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: interference-draw 1.25s ease-out forwards;
}

.reveal .interference-slide {
  animation: interference-fade-in 0.8s ease-out both;
}

@keyframes interference-draw {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes interference-fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.reveal .interference-formulas {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 0.4rem;
}

.reveal .formula-step {
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 11.4rem;
  padding: 0.9rem 1.05rem;
  border: 1px solid #303b4f;
  border-radius: 8px;
  background: #0b111b;
}

.reveal .formula-step p {
  margin: 0;
  color: #f2f2f2;
  font-size: 0.68em;
}

.reveal .formula-step .math.display {
  align-self: center;
  justify-self: center;
  margin: 0;
  font-size: 0.95em;
}

.reveal .formula-takeaway {
  margin: 0.75rem 0 0;
  padding: 0.5rem 0.7rem;
  border-left: 4px solid #ffcc4d;
  color: #d7dde8;
  font-size: 0.72em;
  background: rgba(255, 204, 77, 0.08);
}

.reveal .wave-plane-widget {
  width: min(100%, 1220px);
  margin: 0 auto;
  color: #f2f2f2;
  font-size: 0.48em;
}

.reveal .wave-plane-equation .math.display {
  margin: 0.15rem 0 0.45rem;
  font-size: 0.64em;
}

.reveal .wave-plane-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 0.9rem;
  align-items: center;
  margin: 0 0 0.45rem;
}

.reveal .wave-plane-controls label {
  display: grid;
  grid-template-columns: auto auto auto;
  gap: 0.42rem;
  align-items: center;
  margin: 0;
}

.reveal .wave-plane-controls label:nth-child(1),
.reveal .wave-plane-controls label:nth-child(2) {
  grid-template-columns: auto auto;
}

.reveal .wave-plane-controls span {
  color: #b8c4d8;
}

.reveal .wave-plane-controls select,
.reveal .wave-plane-controls input,
.reveal .wave-plane-controls output,
.reveal .wave-plane-controls button {
  font: inherit;
}

.reveal .wave-plane-controls select,
.reveal .wave-plane-controls button {
  min-height: 1.9rem;
  border: 1px solid #34445c;
  border-radius: 7px;
  background: #101722;
  color: #f2f2f2;
}

.reveal .wave-plane-controls button {
  padding: 0.15rem 0.72rem;
  cursor: pointer;
}

.reveal .wave-plane-controls input[type="range"] {
  width: 8rem;
  accent-color: #ffcc4d;
}

.reveal .wave-plane-controls output {
  min-width: 3.1rem;
  padding: 0.1rem 0.24rem;
  border: 1px solid #34445c;
  border-radius: 6px;
  background: #101722;
  color: #f2f2f2;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.reveal .wave-plane-canvas {
  display: block;
  width: 100%;
  max-height: 500px;
  border: 1px solid #243244;
  border-radius: 8px;
  background: #070a0f;
}

.reveal .wave-plane-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
  margin-top: 0.35rem;
  color: #b8c4d8;
}

.reveal .wave-plane-legend span {
  display: inline-flex;
  gap: 0.32rem;
  align-items: center;
}

.reveal .wave-plane-legend i {
  display: inline-block;
  width: 1.1rem;
  height: 0.22rem;
  border-radius: 3px;
}

.reveal .legend-source {
  height: 0.55rem !important;
  width: 0.55rem !important;
  border-radius: 50% !important;
  background: #ffffff;
}

.reveal .legend-straight {
  background: repeating-linear-gradient(
    90deg,
    #d7dde8 0,
    #d7dde8 0.32rem,
    transparent 0.32rem,
    transparent 0.52rem
  );
}

.reveal .legend-classical {
  background: #ffcc4d;
}

.reveal .legend-density {
  background: linear-gradient(90deg, #58a6ff, #ffcc4d);
}

.reveal .legend-signed {
  background: linear-gradient(90deg, #ff9f5a, #58a6ff);
}

.reveal .legend-phase {
  height: 0.08rem !important;
  background: #fff2a8;
}

.reveal .lecture-source-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 0.34fr);
  gap: 2.2rem;
  align-items: center;
  min-height: 640px;
}

.reveal .lecture-source-text {
  font-size: 0.78em;
  line-height: 1.36;
}

.reveal .lecture-source-text li {
  margin: 0.55rem 0;
}

.reveal .source-modesty-note {
  margin-top: 1.2rem;
  padding: 0.65rem 0.85rem;
  border-left: 4px solid #ffcc4d;
  background: rgba(255, 204, 77, 0.08);
  color: #d7dde8;
  font-size: 0.88em;
}

.reveal .lecture-source-cover {
  justify-self: end;
}

.reveal .lecture-source-cover img {
  display: block;
  max-width: 310px;
  max-height: 620px;
  margin: 0;
  border: none;
  border-radius: 6px;
  box-shadow: 0 20px 42px rgba(0, 0, 0, 0.42);
}

.reveal .story-tabs {
  font-size: 0.72em;
}

.reveal .story-tabs .media-caption {
  margin-top: 0.65rem;
  font-size: 1.02em;
  line-height: 1.25;
}

.reveal .story-question-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 1rem;
  align-items: center;
}

.reveal .story-question-grid video.slide-video {
  --media-width: 100%;
  --media-max-height: 470px;
}

.reveal .story-scattering-animation {
  display: block;
  width: 100%;
  max-height: 470px;
  margin: 0 auto;
}

.reveal .story-video-pair,
.reveal .story-picture-pair,
.reveal .story-interference-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  align-items: center;
}

.reveal .story-formula-card {
  width: min(100%, 1080px);
  margin: 0 auto;
  padding: 0.9rem 1rem;
  border: 1px solid #303b4f;
  border-radius: 8px;
  background: #0b111b;
  text-align: center;
}

.reveal .story-formula-card .math.display {
  margin: 0.25rem 0;
  font-size: 0.86em;
}

.reveal .story-interference-grid {
  margin-top: 0.75rem;
}

.reveal .story-interference-picture {
  min-width: 0;
}

.reveal .story-interference-svg {
  display: block;
  width: 100%;
  max-height: 390px;
  margin: 0 auto;
}

.reveal .story-interference-svg .interference-title {
  font-size: 27px;
}

.reveal .story-interference-svg .interference-subtitle,
.reveal .story-interference-svg .interference-label,
.reveal .story-interference-svg .interference-axis-label,
.reveal .story-interference-svg .interference-summary {
  font-size: 17px;
}

.reveal .story-picture-pair img {
  display: block;
  width: 100%;
  max-height: 500px;
  object-fit: contain;
  border: none;
  box-shadow: none;
}

.reveal .story-video-pair video.slide-video {
  --media-width: 100%;
  --media-max-height: 390px;
}