:root {
  --pku-red: #8c0000;
  --text-color: #111;
  --muted-text: #555;
  --slide-font: "Avenir Next", "Charter", -apple-system, BlinkMacSystemFont,
    "SF Pro Text", "Noto Sans SC", "PingFang SC", "Microsoft YaHei",
    "Helvetica Neue", Arial, sans-serif;
  --title-font: "Charter", "Avenir Next", "Iowan Old Style", Georgia,
    "Times New Roman", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", serif;
  --equation-size: 24px;
}

/* 1. Global slide defaults */
.reveal {
  color: var(--text-color);
  font-family: var(--slide-font);
  font-weight: 400;
}

.reveal .slides section {
  text-align: left;
}

.reveal p,
.reveal li {
  font-family: var(--slide-font);
  font-weight: 400;
  line-height: 1.35;
}

.reveal p {
  font-size: 0.75em;
}

.reveal ul {
  font-size: 0.85em;
  line-height: 1.45;
}

.reveal strong,
.reveal b {
  font-weight: 600;
}

.reveal img {
  max-height: 520px;
  object-fit: contain;
}

.reveal .progress {
  display: none !important;
}

/* 2. Regular slide title and PKU logo */
.reveal h1,
.reveal h2,
.reveal h3 {
  font-family: var(--title-font);
  font-weight: 400;
  letter-spacing: 0;
}

.reveal h2 {
  display: inline-block;
  max-width: calc(100% - 185px);
  margin: 22px 0 1.25em;
  font-size: 0.82em;
  white-space: nowrap;
}

.reveal .slides section:not(.cover-slide):not(:has(> section)) > h2::after {
  content: "";
  display: block;
  width: 100%;
  height: 4px;
  margin-top: 0.18em;
  background: var(--pku-red);
}

.reveal .slides section:not(:has(> section))::after {
  content: "";
  position: absolute;
  top: 24px;
  right: 0;
  width: 135px;
  height: 55px;
  background: url("assets/pekingu.png") right top / contain no-repeat;
  pointer-events: none;
}

/* 3. Bottom section progress bar */
.reveal .section-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 18px;
  pointer-events: none;
}

.reveal .section-progress p {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin: 0;
  color: rgba(17, 17, 17, 0.34);
  font-size: 0.22em;
  line-height: 1;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.reveal .section-progress span {
  border-top: 2px solid rgba(140, 0, 0, 0.18);
  padding-top: 0.45em;
}

.reveal .section-progress .active {
  color: rgba(17, 17, 17, 0.68);
  border-top-color: rgba(140, 0, 0, 0.68);
}

/* 4. Cover slide */
.reveal .cover-slide > h2 {
  display: none;
}

.reveal .cover-rule {
  position: absolute;
  top: 112px;
  left: 58px;
  width: 700px;
  height: 4px;
  background: var(--pku-red);
}

.reveal .cover-slide::after {
  top: 32px;
  width: 170px;
  height: 70px;
}

.reveal .cover-title {
  position: absolute;
  top: 158px;
  left: 58px;
  width: 700px;
  font-family: var(--title-font);
  font-size: 1.18em;
  font-weight: 500;
  line-height: 1.18;
}

.reveal .cover-meta {
  position: absolute;
  right: 58px;
  bottom: 116px;
  width: 650px;
  color: #222;
  font-family: var(--slide-font);
  line-height: 1.35;
  text-align: right;
}

.reveal .cover-title p,
.reveal .cover-meta p {
  margin: 0;
  font: inherit;
  line-height: inherit;
}

.reveal .cover-authors {
  margin-bottom: 0.45em;
  font-size: 0.46em;
  font-weight: 500;
  white-space: nowrap;
}

.reveal .cover-event,
.reveal .cover-date {
  color: #333;
  font-size: 0.34em;
  line-height: 1.35;
}

.reveal .cover-date {
  margin-top: 0.15em;
}

/* 5. Model overview slide */
.reveal .model-layout,
.reveal .slip-layout {
  display: grid;
  grid-template-columns: 40% 60%;
  align-items: center;
  column-gap: 0;
  min-height: 390px;
  margin-top: 0.25em;
}

.reveal .slip-layout {
  min-height: 400px;
}

.reveal .model-figure-wrap,
.reveal .slip-figure-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}

.reveal .model-figure,
.reveal .slip-figure {
  display: block;
  width: 84%;
  max-height: 440px;
  margin: 0 auto;
}

.reveal .model-notes {
  width: 88%;
  margin: 0;
  padding-left: 0;
}

.reveal .model-notes ul {
  font-size: 0.7em;
  line-height: 1.45;
}

.reveal .model-notes li {
  margin-bottom: 0.95em;
}

.reveal .key-term {
  color: var(--pku-red);
  font-weight: 600;
}

.reveal .no-break {
  white-space: nowrap;
}

/* 6. Reusable equation blocks */
.reveal .slip-content,
.reveal .rheology-content,
.reveal .diffusion-content,
.reveal .asymptotic-content,
.reveal .reciprocal-content {
  width: 91%;
  margin: 0;
  --block-equation-size: var(--equation-size);
}

.reveal .rheology-content,
.reveal .diffusion-content,
.reveal .asymptotic-content,
.reveal .reciprocal-content {
  width: 91%;
  margin: 0.1em auto 0;
  --block-equation-size: 23px;
}

.reveal .diffusion-content {
  margin-top: 0.45em;
}

.reveal .asymptotic-content,
.reveal .reciprocal-content {
  margin-top: -0.6em;
}

.reveal .mechanism-block {
  margin-bottom: 0.9em;
  padding-left: 0.52em;
  border-left: 3px solid rgba(140, 0, 0, 0.5);
}

.reveal .rheology-content .mechanism-block,
.reveal .diffusion-content .mechanism-block,
.reveal .asymptotic-content .mechanism-block,
.reveal .reciprocal-content .mechanism-block {
  margin-bottom: 0.6em;
}

.reveal .diffusion-content .mechanism-block {
  margin-bottom: 0.78em;
}

.reveal .mechanism-block > p:first-child {
  margin: 0 0 0.28em;
  color: #222;
  font-size: 0.58em;
  font-weight: 500;
  line-height: 1.18;
}

.reveal .rheology-content .mechanism-block > p:first-child,
.reveal .diffusion-content .mechanism-block > p:first-child,
.reveal .asymptotic-content .mechanism-block > p:first-child,
.reveal .reciprocal-content .mechanism-block > p:first-child {
  margin-bottom: 0.22em;
}

.reveal .mechanism-block > p:has(.math.display) {
  margin: 0.12em 0 0.22em;
  line-height: 1;
  text-align: left;
}

.reveal .mechanism-block .math.display,
.reveal .mechanism-block .MathJax_Display,
.reveal .mechanism-block mjx-container[display="true"] {
  font-size: var(--block-equation-size) !important;
  text-align: left !important;
}

.reveal .mechanism-block .MathJax_Display {
  margin: 0.12em 0 0.2em !important;
}

.reveal .symbol-note p {
  margin: 0.2em 0 0;
  color: var(--muted-text);
  font-size: 0.38em;
  line-height: 1.25;
}

.reveal .caveat-row {
  display: grid;
  grid-template-columns: minmax(0, 3.7fr) minmax(0, 1.15fr);
  align-items: center;
  column-gap: 0.72em;
}

.reveal .caveat-block {
  margin: 0;
  padding: 0.28em 0.5em;
  border-radius: 6px;
  background: rgba(140, 0, 0, 0.055);
}

.reveal .caveat-text > p:first-child {
  margin: 0 0 0.16em;
  color: #222;
  font-size: 0.46em;
  font-style: normal;
  font-weight: 500;
  line-height: 1.15;
}

.reveal .caveat-text p {
  margin: 0;
  color: #444;
  font-size: 0.36em;
  font-style: italic;
  line-height: 1.28;
}

.reveal .caveat-block .symbol-note p {
  margin-top: 0.22em;
  font-size: 0.3em;
  font-style: normal;
}

.reveal .caveat-figure-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  justify-self: end;
}

.reveal .caveat-figure-wrap > p {
  margin: 0;
  line-height: 1;
}

.reveal .caveat-figure {
  display: block;
  width: 155px;
  max-height: 145px;
  margin: 0 auto;
}

.reveal .caveat-citation p {
  margin: 0.12em 0 0;
  font-size: 0.26em;
  line-height: 1.08;
  text-align: center;
}

.reveal .rheology-content .symbol-note p,
.reveal .diffusion-content .symbol-note p,
.reveal .asymptotic-content .symbol-note p,
.reveal .reciprocal-content .symbol-note p {
  margin-top: 0.18em;
}

/* 7. Special rows inside equation blocks */
.reveal .propulsion-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 160px;
  align-items: center;
  column-gap: 0.5em;
}

.reveal .propulsion-equation-grid {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  row-gap: 0.25em;
}

.reveal .propulsion-formula p,
.reveal .rheology-main-equation p,
.reveal .scale-row p,
.reveal .dimensionless-row p {
  margin: 0;
}

.reveal .propulsion-formula p {
  white-space: nowrap;
}

.reveal .bio-analogy {
  width: 160px;
  text-align: center;
}

.reveal .paramecium-figure {
  display: block;
  width: 150px;
  max-height: 120px;
  margin: 0 auto 0.12em;
  object-fit: contain;
}

.reveal .bio-analogy p {
  margin: 0;
  color: var(--muted-text);
  font-size: 10px;
  line-height: 1.1;
}

.reveal .rheology-equation-row {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.15fr);
  align-items: center;
  column-gap: 0.55em;
}

.reveal .solute-equation-row {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.35fr);
  align-items: center;
  column-gap: 0.55em;
}

.reveal .scale-row,
.reveal .dimensionless-row {
  display: flex;
  align-items: center;
  gap: 1.6em;
  margin: 0.12em 0 0.22em;
  font-family: var(--slide-font);
  font-size: var(--block-equation-size);
  line-height: 1.05;
}

.reveal .dimensionless-row {
  flex-wrap: wrap;
  row-gap: 0.32em;
}

.reveal .scale-row p,
.reveal .dimensionless-row p {
  font-size: inherit;
  line-height: inherit;
}

.reveal .scale-label {
  margin-right: 0.32em;
  font-family: var(--slide-font);
  font-weight: 500;
}

/* 8. Motivation slide: Non-Newtonian Biofluids */
.reveal .nnfluids-layout {
  display: grid;
  grid-template-columns: 50% 50%;
  align-items: start;
  column-gap: 0;
  min-height: 390px;
  margin-top: 0.25em;
}

.reveal .nnfluids-column-layout {
  text-align: center;
}

.reveal .nnfluids-column-layout img {
  width: 88%;
  max-height: 240px;
  object-fit: contain;
}

.reveal .nnfluids-notes {
  width: 88%;
  margin: 0.25em auto 0;
}

.reveal .nnfluids-notes p {
  font-size: 0.58em;
  line-height: 1.35;
  font-weight: 400;
}

.reveal .nnfluids-citation p {
  margin: 0.12em 0 0;
  font-size: 0.26em;
  line-height: 1.08;
  text-align: center;
}

.reveal .nnfluids-key p {
  margin: 0;
  font-size: 0.7em;
  font-weight: 500;
  line-height: 1.25;
}

.reveal .mucus-summary-row {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  align-items: center;
  column-gap: 0.65em;
  width: 88%;
  margin: 0.35em auto 0;
  padding: 0.28em 0.45em;
  border-radius: 6px;
  background: rgba(140, 0, 0, 0.045);
}

.reveal .mucus-summary-figure-wrap {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.reveal .mucus-summary-figure-wrap > p {
  margin: 0;
  line-height: 1;
}

.reveal .mucus-microstructure-figure {
  display: block;
  width: 165px;
  max-height: 105px;
  margin: 0;
  object-fit: contain;
}

.reveal .mucus-summary-text {
  text-align: left;
}

.reveal .mucus-summary-text > p:first-child {
  margin: 0 0 0.22em;
  font-size: 0.58em;
  font-weight: 500;
  line-height: 1.2;
}

/* 9. Motivation slide: Rheology Alters Biological Swimming */
.reveal .rheology-effect-layout {
  display: grid;
  grid-template-columns: 50% 50%;
  align-items: start;
  column-gap: 0;
  min-height: 390px;
  margin-top: 0.25em;
}

.reveal .rheology-effect-column-layout {
  text-align: center;
}

.reveal .rheology-effect-column-layout img {
  width: 88%;
  max-height: 300px;
  object-fit: contain;
}

.reveal .rheology-effect-notes {
  width: 88%;
  margin: 0.25em auto 0;
}

.reveal .rheology-effect-notes p {
  font-size: 0.58em;
  line-height: 1.35;
  font-weight: 400;
}

.reveal .rheology-effect-citation p {
  margin: 0.12em 0 0;
  font-size: 0.26em;
  line-height: 1.08;
  text-align: center;
}

/* 10. Motivation slide: Self-Diffusiophoretic Janus Particles */
.reveal .Janus-layout {
  display: grid;
  grid-template-columns: 42% 58%;
  align-items: start;
  column-gap: 0;
  min-height: 390px;
  margin-top: 0.25em;
}

.reveal .Janus-column-layout {
  text-align: center;
}

.reveal .Janus-column-layout img {
  width: 88%;
  max-height: 300px;
  object-fit: contain;
}

.reveal .Janus-notes {
  width: 88%;
  margin: 0.25em auto 0;
}

.reveal .Janus-notes p {
  font-size: 0.58em;
  line-height: 1.35;
  font-weight: 400;
}

.reveal .Janus-citation p {
  margin: 0.12em 0 0;
  font-size: 0.26em;
  line-height: 1.08;
  text-align: center;
}

/* 11. Motivation slide: Viscoelasticity Reshapes Janus-Particle Diffusion */
.reveal .ve-layout {
  display: grid;
  grid-template-columns: 50% 50%;
  align-items: start;
  column-gap: 0;
  min-height: 390px;
  margin-top: 0.25em;
}

.reveal .ve-column-layout {
  text-align: center;
}

.reveal .ve-column-layout img {
  width: 88%;
  max-height: 240px;
  object-fit: contain;
}

.reveal .ve-notes {
  width: 88%;
  margin: 0.25em auto 0;
}

.reveal .ve-notes p {
  font-size: 0.58em;
  line-height: 1.35;
  font-weight: 400;
}

.reveal .ve-citation p {
  margin: 0.12em 0 0;
  font-size: 0.26em;
  line-height: 1.08;
  text-align: center;
}

.reveal .janus-diffusion-transition {
  width: 92%;
  margin: 0.35em auto 0;
  padding: 0.3em 0.55em;
  border-radius: 6px;
  background: rgba(140, 0, 0, 0.055);
  text-align: left;
}

.reveal .janus-diffusion-transition p {
  margin: 0;
  font-size: 0.58em;
  font-weight: 500;
  line-height: 1.3;
}

/* 12. Motivation slide: Viscoelastic Propulsion of a Spherical Janus Particle */
.reveal .datt-layout {
  display: grid;
  grid-template-columns: 50% 40%;
  align-items: start;
  column-gap: 0;
  max-height: 390px;
  margin-top: 0.25em;
}

.reveal .datt-column-layout {
  text-align: center;
}

.reveal .datt-column-layout img {
  width: 88%;
  max-height: 220px;
  object-fit: contain;
}

.reveal .datt-citation p {
  margin: 0.12em 0 0;
  font-size: 0.26em;
  line-height: 1.08;
  text-align: center;
}

.reveal .datt-findings {
  width: 91%;
  margin: 0.15em auto 0;
  text-align: left;
}

.reveal .datt-findings ul {
  margin: 0;
  padding-left: 1.15em;
  font-size: 0.52em;
  line-height: 1.38;
}

.reveal .datt-findings li {
  margin-bottom: 0.28em;
}

.reveal .datt-tension-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  align-items: center;
  column-gap: 0.7em;
  width: 91%;
  margin: -0.3em auto 0;
}

.reveal .datt-tension-text {
  padding: 0.38em 0.55em;
  border-radius: 6px;
  background: rgba(140, 0, 0, 0.055);
  text-align: left;
}

.reveal .datt-tension-text > p:first-child {
  margin: 0 0 0.18em;
  font-size: 0.5em;
  font-weight: 600;
  line-height: 1.2;
}

.reveal .datt-tension-text p {
  margin: 0;
  font-size: 0.42em;
  line-height: 1.35;
}

.reveal .datt-experiment-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.reveal .datt-experiment-wrap > p {
  margin: 0;
  line-height: 1;
}

.reveal .datt-experiment-figure {
  display: block;
  width: 250px;
  max-height: 150px;
  margin: 0;
  object-fit: contain;
}

.reveal .datt-experiment-citation p {
  margin: 0.1em 0 0;
  font-size: 0.24em;
  line-height: 1.08;
  text-align: center;
}

/* 13. Motivation slide: Research question */
.reveal .geometry-question-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 90px minmax(0, 1fr);
  align-items: center;
  column-gap: 0.35em;
  width: 92%;
  margin: 0.35em auto 0;
}

.reveal .geometry-question-column {
  text-align: center;
}

.reveal .geometry-question-figure {
  display: block;
  width: 100%;
  height: 235px;
  margin: 0 auto;
  object-fit: contain;
}

.reveal .geometry-question-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.reveal .geometry-question-center p {
  margin: 0;
  color: var(--pku-red);
  font-size: 1.35em;
  font-weight: 500;
  line-height: 1;
}

.reveal .geometry-question-key p {
  margin: 0.2em 0 0;
  font-size: 0.66em;
  font-weight: 500;
  line-height: 1.2;
}

.reveal .geometry-question-note {
  width: 90%;
  margin: 0.2em auto 0;
}

.reveal .geometry-question-note p {
  margin: 0;
  font-size: 0.48em;
  line-height: 1.3;
}

.reveal .geometry-question-box {
  width: 90%;
  margin: 0.45em auto 0;
  padding: 0.32em 0.55em;
  border-radius: 6px;
  background: rgba(140, 0, 0, 0.055);
  text-align: left;
}

.reveal .geometry-question-box ul {
  margin: 0;
  padding-left: 1.15em;
  font-size: 0.58em;
  line-height: 1.35;
}

.reveal .geometry-question-box li {
  margin: 0;
}

.reveal .geometry-question-box li + li {
  margin-top: 0.35em;
}

/* 14. Model slide: Weak-viscoelasticity story */
.reveal .asymptotic-story {
  width: 91%;
  margin: 0.1em auto 0;
  --block-equation-size: 23px;
}

.reveal .asymptotic-step-key p {
  margin: 0 0 0.16em;
  font-size: 0.58em;
  font-weight: 500;
  line-height: 1.45;
}

.reveal .asymptotic-step-text p {
  margin: 0 0 0.16em;
  font-size: 0.5em;
  line-height: 1.45;
}

.reveal .known-state-row {
  display: grid;
  grid-template-columns: 1fr 45px 1fr 45px 1.45fr;
  align-items: center;
  column-gap: 0.2em;
  margin-top: 0.18em;
}

.reveal .known-state-item {
  padding: 0.22em 0.32em;
  border-radius: 5px;
  background: rgba(140, 0, 0, 0.045);
  text-align: center;
}

.reveal .known-state-item p {
  margin: 0;
  font-size: 0.58em;
  line-height: 1.45;
}

.reveal .known-state-arrow {
  text-align: center;
}

.reveal .known-state-arrow p {
  margin: 0;
  color: var(--pku-red);
  font-size: 0.5em;
  line-height: 1;
}

.reveal .asymptotic-focus {
  background: rgba(140, 0, 0, 0.055);
}

/* 15. Model slide: Reciprocal-theorem story */
.reveal .reciprocal-story {
  width: 91%;
  margin: 0.1em auto 0;
  --block-equation-size: 23px;
}

.reveal .reciprocal-step-key p {
  margin: 0 0 0.16em;
  font-size: 0.58em;
  font-weight: 500;
  line-height: 1.45;
}

.reveal .reciprocal-step-text p {
  margin: 0 0 0.16em;
  font-size: 0.5em;
  line-height: 1.45;
}

.reveal .reciprocal-focus {
  background: rgba(140, 0, 0, 0.055);
}

.reveal .reciprocal-story .mechanism-block {
  margin-bottom: 0.62em;
}

/* 16. Results slide: Sphere Results */
.reveal .sphere-result-layout {
  display: grid;
  grid-template-columns: 40% 65%;
  align-items: center;
  column-gap: 0;
  min-height: 400px;
  margin-top: 0.25em;
}

.reveal .sphere-result-content {
  width: 100%;
  margin: 0;
  --block-equation-size: 23px;
}

.reveal .sphere-result-figure-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}

.reveal .sphere-result-figure {
  display: block;
  width: 84%;
  max-height: 440px;
  margin: 0 auto;
}

.reveal .sphere-result-text p {
  margin: 0 0 0.16em;
  font-size: 0.5em;
  line-height: 1.45;
}

.reveal .sphere-result-notes {
  width: 92%;
  margin: 0.4em auto 0;
  padding: 0.32em 0.55em;
  border-radius: 6px;
  background: rgba(140, 0, 0, 0.075);
  text-align: left;
}

.reveal .sphere-result-notes p {
  margin: 0;
  font-size: 0.58em;
  font-weight: 500;
  line-height: 1.45;
}

/* 17. Results slide: Half-coated spheroids */
.reveal .halfcase-layout {
  display: grid;
  grid-template-columns: 50% 50%;
  align-items: center;
  column-gap: 0;
  min-height: 400px;
  margin-top: 0.25em;
}

.reveal .halfcase-content {
  width: 100%;
  margin: 0;
  --block-equation-size: 23px;
}

.reveal .halfcase-figure-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}

.reveal .halfcase-figure {
  display: block;
  width: 84%;
  max-height: 440px;
  margin: 0 auto;
}

.reveal .halfcase-notes {
  width: 88%;
  margin: 0;
  padding-left: 0;
}

.reveal .halfcase-notes ul {
  font-size: 0.7em;
  line-height: 1.45;
}

.reveal .halfcase-notes li {
  margin-bottom: 0.95em;
}

.reveal .halfcase-notes li:nth-child(3) {
  color: var(--pku-red);
  font-weight: 500;
}

.reveal .halfcase-key p {
  margin: 0 0 0.55em;
  font-size: 0.74em;
  font-weight: 500;
  line-height: 1.25;
}

/* 18. Results slide: Eccentricity-induced symmetry breaking */
.reveal .symmetry-breaking-layout {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.0em;
  align-items: start;
  margin-top: 0.75em;
}

.reveal .symmetry-breaking-column-layout {
  text-align: center;
}

.reveal .symmetry-breaking-column-layout img {
  width: 100%;
  height: 320px;
  object-fit: contain;
}

.reveal .symmetry-breaking-notes {
  width: 90%;
  margin: 0.35em auto 0;
}

.reveal .symmetry-breaking-notes p {
  font-size: 0.7em;
  line-height: 1.35;
  text-align: center;
}

/* 19. Results slide: Mechanism */
.reveal .mechanism-layout {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.0em;
  align-items: start;
  margin-top: 0.75em;
}

.reveal .mechanism-column-layout {
  text-align: center;
}

.reveal .mechanism-column-layout img {
  width: 100%;
  height: 320px;
  object-fit: contain;
}

.reveal .mechanism-notes {
  width: 88%;
  margin: 0 0 0 1.2em;
  padding-left: 0;
}

.reveal .mechanism-notes ul {
  font-size: 0.7em;
  line-height: 1.45;
}

.reveal .mechanism-notes li {
  margin-bottom: 0.95em;
}

/* 20. Summary slide: Summary */
.reveal .summary-layout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
  column-gap: 0.7em;
  width: 94%;
  margin: 0.15em auto 0;
}

.reveal .summary-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 390px;
  padding: 0.28em 0.35em 0.35em;
  border-radius: 7px;
  background: rgba(17, 17, 17, 0.025);
  text-align: center;
}

.reveal .summary-figure-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 235px;
}

.reveal .summary-figure-wrap > p {
  margin: 0;
  line-height: 1;
}

.reveal .summary-figure {
  display: block;
  width: 100%;
  max-height: 225px;
  margin: 0 auto;
  object-fit: contain;
}

.reveal .summary-key {
  width: 92%;
  margin: 0.18em auto 0;
}

.reveal .summary-key p {
  margin: 0;
  color: var(--pku-red);
  font-size: 0.58em;
  font-weight: 600;
  line-height: 1.2;
}

.reveal .summary-text {
  width: 92%;
  margin: 0.2em auto 0;
}

.reveal .summary-text p {
  margin: 0;
  font-size: 0.5em;
  line-height: 1.35;
  text-align: left;
}

.reveal .summary-takehome {
  width: 90%;
  margin: 0.45em auto 0;
  padding: 0.34em 0.55em;
  border-radius: 6px;
  background: rgba(140, 0, 0, 0.085);
  text-align: center;
}

.reveal .summary-takehome p {
  margin: 0;
  font-size: 0.58em;
  font-weight: 600;
  line-height: 1.3;
}

/* 21. Acknowledgment slide */
.reveal .acknowledgment-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  column-gap: 1.1em;
  width: 88%;
  margin: 0.2em auto 0;
}

.reveal .acknowledgment-person {
  text-align: center;
}

.reveal .acknowledgment-person > p {
  margin: 0;
  line-height: 1;
}

.reveal .acknowledgment-photo {
  display: block;
  width: 200px;
  height: 250px;
  margin: 0 auto;
  border-radius: 8px;
  object-fit: cover;
}

.reveal .acknowledgment-name {
  margin-top: 0.28em;
}

.reveal .acknowledgment-name p {
  margin: 0;
  color: var(--pku-red);
  font-size: 0.68em;
  font-weight: 600;
  line-height: 1.2;
}

.reveal .acknowledgment-role p {
  margin: 0.12em 0 0;
  font-size: 0.48em;
  font-weight: 500;
  line-height: 1.3;
}

.reveal .acknowledgment-affiliation p {
  margin: 0.12em 0 0;
  color: var(--muted-text);
  font-size: 0.4em;
  line-height: 1.3;
}

.reveal .acknowledgment-footer {
  width: 90%;
  margin: 0.45em auto 0;
  padding: 0.3em 0.55em;
  border-radius: 6px;
  background: rgba(140, 0, 0, 0.055);
  text-align: left;
}

.reveal .acknowledgment-item {
  margin: 0;
}

.reveal .acknowledgment-item + .acknowledgment-item {
  margin-top: 0.18em;
}

.reveal .acknowledgment-item p {
  margin: 0;
  font-size: 0.5em;
  line-height: 1.45;
}