.reveal .matter-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 2.2rem;
  align-items: center;
  min-height: 580px;
}

.reveal .matter-scale {
  display: grid;
  gap: 0.55rem;
}

.reveal .matter-level {
  display: grid;
  grid-template-columns: 8.2rem 1fr;
  gap: 0.8rem;
  align-items: center;
  padding: 0.45rem 0.7rem;
  border-left: 0.22rem solid #7cc7ff;
  background: linear-gradient(90deg, rgb(124 199 255 / 18%), transparent);
}

.reveal .matter-level:nth-child(2) {
  margin-left: 1.5rem;
  border-left-color: #7bdcb5;
}

.reveal .matter-level:nth-child(3) {
  margin-left: 3rem;
  border-left-color: #ffd166;
}

.reveal .matter-level:nth-child(4) {
  margin-left: 4.5rem;
  border-left-color: #ff8fab;
}

.reveal .matter-level .scale {
  color: #d0d0d0;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.72em;
}

.reveal .matter-summary {
  padding: 1.1rem 1.25rem;
  border: 1px solid #3b5567;
  border-radius: 0.5rem;
  background: #09131b;
}

.reveal .matter-summary .equation {
  margin: 0.65rem 0;
  color: #ffffff;
  font-size: 1.2em;
  font-weight: 700;
  text-align: center;
}

.reveal .interaction-grid,
.reveal .weak-interaction-grid {
  display: grid;
  gap: 1.2rem;
  align-items: start;
}

.reveal .interaction-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.reveal .weak-interaction-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 1050px;
  margin: 0 auto;
}

.reveal .interaction-card {
  text-align: center;
}

.reveal .interaction-card video {
  display: block;
  width: 100%;
  height: 660px;
  object-fit: contain;
  background: #000000;
}

.reveal .weak-interaction-grid .interaction-card video {
  height: 600px;
}

.reveal .interaction-label {
  margin-top: 0.2rem;
  color: #d7eafa;
  font-size: 0.72em;
  font-weight: 600;
}

.reveal .classification-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 1.1rem;
}

.reveal .particle-family {
  min-height: 390px;
  padding: 1.1rem 1.25rem;
  border: 1px solid #384956;
  border-radius: 0.55rem;
  background: #08131a;
}

.reveal .particle-family h3 {
  margin-top: 0;
  color: #8ec5ff;
}

.reveal .particle-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  justify-content: center;
  margin-top: 1.2rem;
}

.reveal .particle-tag {
  padding: 0.42rem 0.8rem;
  border-radius: 999px;
  color: #ffffff;
  background: #1c435d;
  font-weight: 650;
}

.reveal .particle-tag.quark {
  background: #7b3042;
}

.reveal .particle-tag.boson {
  background: #6b4a13;
}

.reveal .sm-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
  gap: 2rem;
  align-items: center;
}

.reveal .sm-particle-map {
  display: grid;
  gap: 0.55rem;
}

.reveal .sm-sector {
  padding: 0.45rem 0.65rem 0.5rem;
  border: 1px solid #344753;
  border-radius: 0.45rem;
  background: #08131a;
}

.reveal .sm-sector h3 {
  margin: 0 0 0.28rem;
  color: #ffffff;
  font-size: 0.72em;
  letter-spacing: 0.04em;
}

.reveal .sm-doublet-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  align-items: center;
}

.reveal .sm-doublet-stack {
  position: relative;
  height: 102px;
  margin: 10px 12px 0 0;
}

.reveal .sm-doublet-stack::before,
.reveal .sm-doublet-stack::after {
  position: absolute;
  inset: 0;
  content: "";
  border: 1px solid;
  border-radius: 0.35rem;
}

.reveal .sm-doublet-stack::before {
  z-index: 0;
  border-color: #4f8ed8;
  background: #142f52;
  transform: translate(12px, -10px);
}

.reveal .sm-doublet-stack::after {
  z-index: 1;
  border-color: #53b58a;
  background: #153d30;
  transform: translate(6px, -5px);
}

.reveal .sm-doublet {
  display: grid;
  min-height: 102px;
  place-items: center;
  border: 1px solid;
  border-radius: 0.35rem;
  font-size: 1.02em;
  font-weight: 650;
}

.reveal .sm-doublet mjx-container,
.reveal .sm-boson-cell mjx-container,
.reveal .sm-multiplicity mjx-container {
  margin: 0 !important;
}

.reveal .quark-doublet {
  position: relative;
  z-index: 2;
  border-color: #df6c85;
  background: #3a1720;
}

.reveal .lepton-doublet {
  border-color: #67b9ee;
  background: #102d3d;
}

.reveal .sm-multiplicity {
  margin-top: 0.22rem;
  color: #f5c7d1;
  font-size: 0.62em;
  font-weight: 650;
  text-align: center;
}

.reveal .sm-boson-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.42rem;
}

.reveal .sm-boson-cell {
  display: grid;
  min-height: 76px;
  place-items: center;
  border: 1px solid;
  border-radius: 0.35rem;
  font-size: 1em;
  font-weight: 650;
}

.reveal .sm-boson-cell.gauge {
  border-color: #d8a934;
  background: #33270e;
}

.reveal .sm-boson-cell.higgs {
  border-color: #79d0aa;
  background: #123126;
}

.reveal .sm-gluon-cell {
  align-content: center;
  gap: 0.1rem;
}

.reveal .sm-boson-multiplicity,
.reveal .sm-cell-multiplicity {
  display: block;
  color: #f0cf7a;
  font-size: 0.58em;
  line-height: 1;
}

.reveal .sm-mass-layout {
  grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.58fr);
  gap: 1.6rem;
}

.reveal .sm-mass-particle-map {
  gap: 0.42rem;
}

.reveal .sm-mass-particle-map .sm-sector {
  padding-block: 0.32rem 0.38rem;
}

.reveal .sm-mass-particle-map .sm-doublet-stack,
.reveal .sm-mass-particle-map .sm-doublet {
  min-height: 102px;
}

.reveal .sm-mass-particle-map .sm-doublet-stack {
  height: 102px;
}

.reveal .sm-mass-note {
  font-size: 0.85em;
}

.reveal .sm-board {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.42rem;
}

.reveal .sm-cell {
  display: grid;
  min-height: 78px;
  padding: 0.3rem;
  place-items: center;
  border: 1px solid #40515d;
  border-radius: 0.35rem;
  color: #ffffff;
  background: #101a21;
  font-size: 1.05em;
  font-weight: 650;
}

.reveal .sm-cell.quark {
  border-color: #e4778d;
  background: #32151c;
}

.reveal .sm-cell.lepton {
  border-color: #75c9ff;
  background: #102a3a;
}

.reveal .sm-cell.gauge {
  border-color: #ffd166;
  background: #33270e;
}

.reveal .sm-cell.higgs {
  border-color: #9be7c4;
  background: #123126;
}

.reveal .sm-pillars {
  margin: 0;
  padding: 1rem 1rem 1rem 3.2rem;
  border-left: 0.2rem solid #7cc7ff;
  background: #08131a;
}

.reveal .sm-pillars li {
  margin: 0.7rem 0;
}

.reveal .pmns-factorization {
  font-size: 0.92em;
}

.reveal .pmns-factorization mjx-container[display="true"] {
  margin: 0.45em 0 0.85em !important;
}

.reveal .atmo-path-demo {
  display: grid;
  gap: 0.35rem;
  padding: 0.35rem 0.5rem 0.55rem;
  border: 1px solid #314b5e;
  border-radius: 0.5rem;
  background: linear-gradient(180deg, #08131d, #050b11);
  cursor: pointer;
}

.reveal .atmo-path-demo:focus-visible {
  outline: 3px solid #7cc7ff;
  outline-offset: 4px;
}

.reveal .atmo-earth {
  display: block;
  width: 100%;
  max-height: 365px;
  overflow: visible;
}

.reveal .atmo-atmosphere {
  fill: none;
  stroke: #7cc7ff;
  stroke-dasharray: 5 7;
  stroke-opacity: 0.46;
  stroke-width: 6;
}

.reveal .atmo-earth-disc {
  stroke: #76c8f5;
  stroke-width: 3;
}

.reveal .atmo-mantle {
  fill: none;
  stroke: #9fdcff;
  stroke-opacity: 0.18;
  stroke-width: 2;
}

.reveal .atmo-core {
  stroke: #ffd166;
  stroke-opacity: 0.32;
  stroke-width: 2;
}

.reveal .atmo-continent {
  fill: #68b684;
  opacity: 0.66;
}

.reveal .atmo-earth-label {
  fill: #e7f5ff;
  font-size: 27px;
  font-weight: 700;
  text-anchor: middle;
}

.reveal .atmo-path-guide {
  fill: none;
  stroke-width: 5;
  stroke-dasharray: 8 8;
  stroke-linecap: round;
}

.reveal .atmo-path-guide-short {
  stroke: #7cc7ff;
  stroke-opacity: 0.38;
}

.reveal .atmo-path-guide-long {
  stroke: #ff9f43;
  stroke-opacity: 0.3;
}

.reveal .atmo-path-trace {
  fill: none;
  stroke-width: 9;
  stroke-linecap: round;
}

.reveal .atmo-path-trace-short {
  stroke: #7cc7ff;
}

.reveal .atmo-path-trace-long {
  stroke: #ff9f43;
}

.reveal .atmo-source path {
  fill: #ffe08a;
}

.reveal .atmo-source text,
.reveal .atmo-detector-label,
.reveal .atmo-distance-label {
  fill: #dcebf4;
  font-size: 22px;
  font-weight: 650;
}

.reveal .atmo-distance-long {
  fill: #ffc078;
}

.reveal .atmo-distance-short {
  fill: #a9dcff;
}

.reveal .atmo-detector path {
  fill: #ffffff;
  stroke: #7cc7ff;
  stroke-width: 3;
}

.reveal .atmo-detector circle {
  fill: #7cc7ff;
}

.reveal .atmo-neutrino {
  filter: url(#atmo-neutrino-glow);
  opacity: 0;
}

.reveal .atmo-neutrino-short {
  fill: #d9f3ff;
  stroke: #7cc7ff;
  stroke-width: 4;
}

.reveal .atmo-neutrino-long {
  fill: #fff0d8;
  stroke: #ff9f43;
  stroke-width: 4;
}

.reveal .atmo-source-sweep {
  fill: none;
  stroke: #ffe08a;
  stroke-dasharray: 4 9;
  stroke-linecap: round;
  stroke-opacity: 0.45;
  stroke-width: 4;
}

.reveal .atmo-current-path-shadow,
.reveal .atmo-current-path {
  fill: none;
  stroke-linecap: round;
}

.reveal .atmo-current-path-shadow {
  stroke: #ff9f43;
  stroke-opacity: 0.18;
  stroke-width: 18;
}

.reveal .atmo-current-path {
  stroke: #ff9f43;
  stroke-width: 8;
}

.reveal .atmo-source-marker path {
  fill: #ffe08a;
  stroke: #fff5c2;
  stroke-width: 2;
}

.reveal .atmo-source-label,
.reveal .atmo-sweep-label {
  fill: #dcebf4;
  font-size: 20px;
  font-weight: 650;
}

.reveal .atmo-sweep-label-min {
  fill: #9ed7ff;
}

.reveal .atmo-sweep-label-max {
  fill: #ffc078;
}

.reveal .atmo-neutrino-current {
  fill: #fff0d8;
  stroke: #ff9f43;
  stroke-width: 4;
}

.reveal .atmo-ratio-graph-panel {
  padding: 0.38rem 0.55rem 0.32rem;
  border-top: 1px solid #294052;
}

.reveal .atmo-graph-header {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) auto auto;
  gap: 0.7rem;
  align-items: center;
}

.reveal .atmo-graph-header .atmo-ratio-formula {
  font-size: 0.54em;
}

.reveal .atmo-live-value {
  color: #bdccd5;
  font-size: 0.43em;
  white-space: nowrap;
}

.reveal .atmo-live-value strong {
  color: #ffb25c;
}

.reveal .atmo-ratio-graph {
  display: block;
  width: 100%;
  max-height: 165px;
  overflow: visible;
}

.reveal .atmo-graph-axis {
  stroke: #b6c8d4;
  stroke-width: 2;
}

.reveal .atmo-graph-expected {
  stroke: #7cc7ff;
  stroke-dasharray: 7 6;
  stroke-opacity: 0.62;
  stroke-width: 2;
}

.reveal .atmo-ratio-curve {
  fill: none;
  stroke: #ff9f43;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 7;
}

.reveal .atmo-graph-cursor {
  stroke: #ffe0b8;
  stroke-dasharray: 4 5;
  stroke-opacity: 0.6;
  stroke-width: 2;
}

.reveal .atmo-graph-point {
  fill: #ff9f43;
  stroke: #ffffff;
  stroke-width: 4;
}

.reveal .atmo-graph-tick,
.reveal .atmo-graph-label {
  fill: #b9c9d3;
  font-size: 17px;
}

.reveal .atmo-graph-label {
  fill: #9ed7ff;
  font-size: 16px;
}

.reveal .atmo-graph-note {
  margin-top: -0.08rem;
  color: #94a8b5;
  font-size: 0.32em;
  text-align: right;
}

.reveal .atmo-ratio-panel {
  display: grid;
  grid-template-columns: 1.35fr 0.55fr;
  gap: 0.15rem 0.65rem;
  align-items: center;
  padding: 0.45rem 0.65rem 0.55rem;
  border-top: 1px solid #294052;
}

.reveal .atmo-ratio-formula {
  color: #ffffff;
  font-size: 0.62em;
}

.reveal .atmo-ratio-readout {
  color: #ffb25c;
  font-size: 0.95em;
  font-weight: 750;
  text-align: right;
}

.reveal .atmo-ratio-scale {
  position: relative;
  grid-column: 1 / -1;
  height: 12px;
  margin: 0.62rem 0.35rem 0.8rem;
  border-radius: 999px;
  background: linear-gradient(90deg, #ff9f43, #ffd166 48%, #7cc7ff);
}

.reveal .atmo-ratio-dot {
  position: absolute;
  top: 50%;
  left: 100%;
  width: 24px;
  height: 24px;
  border: 4px solid #ffffff;
  border-radius: 50%;
  background: #ff9f43;
  box-shadow: 0 0 14px rgb(255 159 67 / 75%);
  transform: translate(-50%, -50%);
}

.reveal .atmo-ratio-tick,
.reveal .atmo-ratio-expected {
  position: absolute;
  color: #b9c9d3;
  font-size: 17px;
  line-height: 1;
}

.reveal .atmo-ratio-tick {
  top: 19px;
}

.reveal .atmo-ratio-tick-one {
  left: 0;
  transform: translateX(-50%);
}

.reveal .atmo-ratio-tick-two {
  right: 0;
  transform: translateX(50%);
}

.reveal .atmo-ratio-expected {
  right: 0;
  bottom: 19px;
  color: #9ed7ff;
}

.reveal .atmo-ratio-state {
  display: flex;
  grid-column: 1 / -1;
  gap: 0.5rem;
  justify-content: space-between;
  color: #c4d3dc;
  font-size: 0.46em;
}

.reveal .atmo-path-demo[data-atmo-mode="short"] .atmo-ratio-state strong {
  color: #9ed7ff;
}

.reveal .atmo-path-demo[data-atmo-mode="long"] .atmo-ratio-state strong {
  color: #ffb96b;
}

.reveal .detector-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.65rem;
  align-items: end;
}

.reveal .detector-card {
  display: grid;
  grid-template-rows: 315px auto;
  gap: 0.35rem;
  align-items: end;
  text-align: center;
}

.reveal .detector-card img {
  width: 100%;
  max-height: 315px;
  object-fit: contain;
  border: 0;
  box-shadow: none;
  background: transparent;
}

.reveal .detector-card strong {
  font-size: 0.66em;
}

.reveal .instrument-grid,
.reveal .roadmap-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem 1.1rem;
}

.reveal .instrument-card,
.reveal .roadmap-card {
  padding: 0.65rem 0.85rem;
  border-left: 0.18rem solid #7cc7ff;
  background: #08131a;
}

.reveal .instrument-card:nth-child(3n + 2),
.reveal .roadmap-card:nth-child(3n + 2) {
  border-left-color: #ffcc8a;
}

.reveal .instrument-card:nth-child(3n),
.reveal .roadmap-card:nth-child(3n) {
  border-left-color: #9be7c4;
}

.reveal .mass-ordering {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
  margin-top: 1.6rem;
}

.reveal .ordering-card {
  padding: 1rem;
  border: 1px solid #3c4d59;
  border-radius: 0.5rem;
  background: #08131a;
  text-align: center;
}

.reveal .ordering-levels {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

.reveal .ordering-level {
  height: 0.12rem;
  background: #7cc7ff;
}

.reveal .ordering-level.solar {
  box-shadow: 0 0.35rem 0 #7cc7ff;
}

.reveal .absolute-mass-question {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.1rem;
  align-items: center;
  max-width: 1000px;
  margin: 2rem auto 0;
}

.reveal .absolute-mass-question .question-mark {
  color: #ffcc8a;
  font-size: 5em;
  font-weight: 700;
  line-height: 1;
}

.reveal .exercise-slide {
  font-size: 0.9em;
}

.reveal .exercise-slide .given {
  margin: 0.8rem 0;
  padding: 0.65rem 0.85rem;
  border-left: 0.18rem solid #7cc7ff;
  background: #08131a;
}

.reveal .solar-flux-slide {
  font-size: 0.76em;
}

.reveal .solar-flux-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.32fr);
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  align-items: stretch;
  margin-top: 0.25rem;
}

.reveal .solar-flux-card {
  margin: 0;
  padding: 0.58rem 0.72rem;
  border: 1px solid #294454;
  border-radius: 0.5rem;
  background: linear-gradient(145deg, #08131a 0%, #0b1d27 100%);
}

.reveal .solar-flux-step-title {
  display: block;
  margin: 0 0 0.3rem;
  color: #7cc7ff;
  font-size: 1.02em;
  font-weight: 700;
  line-height: 1.15;
}

.reveal .solar-flux-card p {
  margin: 0.18rem 0;
  line-height: 1.23;
}

.reveal .solar-flux-card .math.display {
  margin: 0.24rem 0;
  font-size: 0.85em;
}

.reveal .solar-flux-source {
  grid-column: 1;
  grid-row: 1;
  border-left: 0.2rem solid #ffcc8a;
}

.reveal .solar-flux-observation {
  grid-column: 1;
  grid-row: 2;
  border-left: 0.2rem solid #9be7c4;
}

.reveal .solar-flux-calculation {
  grid-column: 2;
  grid-row: 1 / span 2;
  border-left: 0.2rem solid #7cc7ff;
}

.reveal .solar-flux-calculation > p:last-child {
  margin-top: 0.3rem;
  padding: 0.2rem 0.35rem;
  border-radius: 0.35rem;
  background: rgba(124, 199, 255, 0.1);
  color: #fff;
}

.reveal .solar-flux-calculation > p:last-child .math.display {
  font-size: 0.88em;
}

@media (max-width: 900px) {
  .reveal .interaction-grid,
  .reveal .detector-grid,
  .reveal .sm-layout,
  .reveal .matter-layout,
  .reveal .solar-flux-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .reveal .solar-flux-source,
  .reveal .solar-flux-observation,
  .reveal .solar-flux-calculation {
    grid-column: 1;
    grid-row: auto;
  }
}