:root {
  --fac-white: #ffffff;
  --fac-black: #121212;
  --fac-grey: #d8d8d8;
  --fac-red: #ff2800;
  --fac-green: #0ccf6b;
  --fac-blue: #0805ec;
  --fac-yellow: #ffe500;
  --fac-muted: #555555;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--fac-white);
}

.reveal .slides section {
  box-sizing: border-box;
  background: var(--fac-white);
  color: var(--fac-black);
  font-family: Montserrat, Arial, Helvetica, sans-serif;
  padding: 44px 88px 90px;
  height: 100%;
  text-align: left;
}

.reveal .slides section::before {
  content: "";
  position: absolute;
  top: 8px;
  right: 5px;
  z-index: 1;
  width: 73px;
  height: 73px;
  pointer-events: none;
  background: url("./assets/fac-brand/template-logo.png") center center / contain no-repeat;
}

.reveal .slides section::after {
  content: "";
  position: absolute;
  left: -1.14%;
  bottom: -9.94%;
  z-index: 0;
  width: 101.22%;
  height: 18.86%;
  pointer-events: none;
  background: url("./assets/fac-brand/template-hatch.png") left top / 100% 100% no-repeat;
}

.reveal .slides section h1 {
  max-width: 1160px;
  margin: 0 0 28px;
  font-size: 38px;
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: 0;
}

.reveal .slides section .compact-slide-title {
  max-width: 960px;
  margin: 0 0 20px;
  font-size: 34px;
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: 0;
}

.reveal .slides section h2 {
  margin: 0 0 18px;
  font-size: 26px;
  line-height: 1.18;
  font-weight: 700;
}

.reveal .slides section p,
.reveal .slides section li {
  font-size: 28px;
  line-height: 1.32;
  color: var(--fac-black);
  opacity: 1;
}

.reveal .slides section .rag-title-slide p,
.reveal .slides section .rag-title-slide .rag-title-subtitle {
  color: var(--fac-black) !important;
  opacity: 1 !important;
}

.reveal .slides section ul,
.reveal .slides section ol {
  max-width: 850px;
}

.reveal .slides section li + li {
  margin-top: 14px;
}

.reveal .slides section .prompt-list {
  max-width: 1080px;
  margin-top: 36px;
  padding-left: 44px;
  list-style: disc;
}

.reveal .slides section .prompt-list li {
  display: list-item;
}

.reveal .slides section .prompt-list li + li {
  margin-top: 34px;
}

.reveal .slides section .search-query {
  margin: 0 0 34px;
  font-size: 25px;
  line-height: 1.32;
}

.reveal .slides section .search-reveals {
  margin-top: 0;
  padding-left: 0;
  list-style: none;
}

.reveal .slides section .search-reveals li {
  font-size: 24px;
  line-height: 1.25;
}

.reveal .slides section .search-reveals li + li {
  margin-top: 15px;
}

.reveal .slides section .reveal-definition {
  max-width: 820px;
  margin-top: 54px;
  font-size: 30px;
  line-height: 1.28;
  font-weight: 700;
}

.reveal .slides section strong {
  font-weight: 700;
}

.reveal .slides section code,
.reveal .slides section pre {
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
}

.reveal .slides section pre {
  border: 2px solid var(--fac-black);
  border-radius: 0;
  background: var(--fac-white);
  padding: 18px 22px;
  box-shadow: none;
}

.reveal .slides section img,
.reveal .slides section video {
  border: 2px solid var(--fac-black);
  background: var(--fac-white);
  max-height: 360px;
  object-fit: contain;
}

.reveal .slides section img.fac-illustration {
  display: block;
  width: 68%;
  max-width: 860px;
  max-height: 320px;
  margin: 34px auto 0;
  border: 0;
}

.reveal .slides section img.example-visual {
  display: block;
  width: 86%;
  max-width: 1040px;
  max-height: 430px;
  margin: 14px auto 0;
  border: 0;
}

/* Transformers build-figure set: full-width 3:1 letterbox */
.reveal .slides section img.build-figure {
  display: block;
  width: 100%;
  max-width: 1240px;
  max-height: 430px;
  margin: 8px auto 0;
  border: 0;
  background: transparent;
}

.reveal .slides section img.dot-product-visual {
  width: 92%;
  max-width: 1040px;
  max-height: 380px;
  margin-top: 6px;
}

.reveal .slides section .slide-strapline {
  margin: 12px auto 0;
  max-width: 900px;
  font-size: 23px;
  line-height: 1.25;
  font-weight: 700;
  text-align: center;
}

.reveal .slides section .dot-product-strapline {
  margin-left: 190px;
  text-align: left;
}

.welcome-slide h1 {
  margin-bottom: 46px;
  font-size: 58px;
}

.welcome-content {
  display: grid;
  grid-template-columns: 230px 230px minmax(390px, 1fr);
  column-gap: 34px;
  row-gap: 18px;
  align-items: end;
}

/* Single-QR variant. The grid is filled by DOM order, so dropping one QR and its
   label without dropping a column would shift the details and start time out of
   place. */
.welcome-content.welcome-content-single {
  grid-template-columns: 230px minmax(390px, 1fr);
}

.welcome-qr {
  display: block;
  width: 100%;
  max-width: 230px;
  max-height: 230px;
  border: 0;
  background: transparent;
  object-fit: contain;
}

.welcome-label {
  margin: 0;
  font-size: 36px;
  line-height: 1.1;
  font-weight: 700;
  text-align: center;
}

.welcome-details {
  align-self: center;
  padding-left: 14px;
}

.welcome-details p {
  margin: 0;
  font-size: 36px;
  line-height: 1.22;
}

.welcome-start {
  margin: 0;
  padding-left: 14px;
  font-size: 36px;
  line-height: 1.1;
}

.paper-opening-slide {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  height: 100%;
  padding-top: 0;
}

.paper-opening-slide img {
  width: auto;
  max-width: 82%;
  max-height: 610px;
  border: 0;
  background: transparent;
}

.paper-title-slide {
  display: grid;
  grid-template-columns: 380px minmax(320px, 1fr);
  gap: 46px;
  align-items: center;
  min-height: 100%;
  padding-right: 90px;
}

.paper-title-slide h1 {
  margin-bottom: 18px;
  font-size: 48px;
  line-height: 1.04;
}

.paper-title-slide p {
  max-width: 470px;
  color: var(--fac-muted);
  font-size: 20px;
  line-height: 1.35;
}

.paper-title-slide .paper-note {
  margin-top: 26px;
  color: var(--fac-muted);
  font-size: 18px;
  line-height: 1.25;
}

.paper-title-slide .paper-author {
  max-width: 470px;
  margin-top: 22px;
  color: var(--fac-black);
  font-size: 20px;
  line-height: 1.3;
  text-align: right;
}

.paper-title-slide img {
  width: 100%;
  max-height: 430px;
  border: 2px solid #cfcfcf;
  box-shadow: 0 8px 22px rgb(0 0 0 / 12%);
}

.rosenblatt-paper-slide {
  grid-template-columns: 380px minmax(320px, 1fr);
  gap: 46px;
}

.rosenblatt-paper-slide img {
  width: 100%;
  max-width: 100%;
  max-height: 430px;
  justify-self: start;
  margin-top: 0;
}

.paper-citation-slide {
  display: grid;
  grid-template-columns: 380px minmax(320px, 1fr);
  gap: 56px;
  align-items: start;
  margin-top: 18px;
  padding-right: 90px;
}

.paper-citation-image-crop {
  width: 100%;
  height: 330px;
  overflow: hidden;
  border: 2px solid #cfcfcf;
  background: var(--fac-white);
  box-shadow: 0 8px 22px rgb(0 0 0 / 12%);
}

.reveal .slides section .paper-citation-image-crop img {
  display: block;
  width: 100%;
  max-height: none;
  border: 0;
  background: var(--fac-white);
  object-fit: contain;
  box-shadow: none;
}

.reveal .slides section .paper-citation-image-crop--backprop img {
  transform: translateY(-84px);
}

.paper-citation-copy {
  max-width: 520px;
  padding-top: 64px;
}

.paper-citation-heading {
  margin: 0 0 18px;
  font-size: 48px;
  line-height: 1.04;
  font-weight: 700;
}

.paper-citation-title {
  margin: 0;
  color: var(--fac-muted);
  font-size: 20px;
  line-height: 1.35;
  font-style: italic;
}

.paper-citation-divider {
  width: 100%;
  height: 2px;
  margin: 24px 0 22px;
  background: var(--fac-black);
}

.paper-citation-meta {
  margin: 0;
  color: var(--fac-black);
  font-size: 20px;
  line-height: 1.3;
  font-weight: 400;
  text-align: right;
}

.paper-citation-meta + .paper-citation-meta {
  margin-top: 6px;
}

.problem-solution {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 54px;
  align-items: start;
  margin-top: 20px;
}

.problem-solution h2 {
  margin-bottom: 22px;
  font-size: 34px;
}

.two-column-compare {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 58px;
  max-width: 1020px;
  margin-top: 32px;
}

.two-column-compare::before {
  content: "";
  position: absolute;
  top: 4px;
  bottom: 8px;
  left: 50%;
  width: 1px;
  background: #d0d5dd;
  transform: translateX(-50%);
}

.two-column-compare h2 {
  margin-bottom: 20px;
  font-size: 34px;
}

.two-column-compare p {
  margin: 0 0 22px;
  font-size: 24px;
  line-height: 1.28;
}

.word-window {
  display: flex;
  gap: 18px;
  align-items: center;
  margin-top: 84px;
  font-size: 42px;
  line-height: 1;
}

.word-window span,
.word-window strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 96px;
  height: 70px;
  border-bottom: 3px solid var(--fac-black);
}

.word-window strong {
  color: #078c4c;
}

.training-direction {
  margin-top: 74px;
  font-size: 36px;
  font-weight: 700;
}

.cbow-example {
  display: grid;
  grid-template-columns: 1fr 72px 170px;
  gap: 30px;
  align-items: center;
  max-width: 1040px;
  margin-top: 42px;
}

.skipgram-example {
  display: grid;
  grid-template-columns: 170px 72px 1fr;
  gap: 30px;
  align-items: center;
  max-width: 1040px;
  margin-top: 42px;
}

.skipgram-example .sentence-window {
  grid-column: 1 / -1;
}

.sentence-window {
  grid-column: 1 / -1;
  display: flex;
  gap: 14px;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 31px;
  line-height: 1;
}

.sentence-window span,
.sentence-window strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 78px;
  height: 52px;
  border-bottom: 3px solid var(--fac-black);
}

.sentence-window strong {
  color: #078c4c;
}

.context-bag {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 18px 28px;
  align-items: center;
  justify-items: center;
  min-height: 170px;
  padding: 26px 48px;
  border: 4px solid var(--fac-black);
  border-radius: 999px;
}

.context-bag span,
.predicted-word,
.source-word {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 118px;
  height: 56px;
  font-size: 30px;
  font-weight: 700;
}

.predicted-word {
  min-width: 150px;
  border-bottom: 4px solid var(--fac-black);
  color: #078c4c;
  font-size: 38px;
}

.source-word {
  min-width: 150px;
  height: 60px;
  border-bottom: 4px solid var(--fac-black);
  color: #078c4c;
  font-size: 38px;
}

.example-arrow {
  text-align: center;
  font-size: 42px;
  font-weight: 700;
}

.example-caption {
  margin-top: 46px;
  font-size: 30px;
  font-weight: 700;
}

.sentence-strip,
.context-window-strip {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 18px;
  font-size: 29px;
}

.sentence-strip span,
.sentence-strip strong,
.context-window-strip span,
.context-window-strip strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 66px;
  height: 54px;
  border-bottom: 3.2px solid var(--fac-black);
}

.sentence-strip strong,
.context-window-strip strong {
  color: #078c4c;
  font-size: 31px;
}

.sentence-strip .outside-window,
.context-window-strip .outside-window {
  color: var(--fac-muted);
  border-bottom-color: #c9ced6;
}

.context-window-strip {
  position: relative;
  isolation: isolate;
  width: max-content;
  margin-top: 16px;
  margin-bottom: 28px;
  padding: 10px 12px;
}

.context-window-strip::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 88px;
  width: 386px;
  border: 2.4px solid #d79b00;
  border-radius: 9px;
  background: #fff7d6;
}

.pair-columns {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  max-width: 860px;
  margin-top: 18px;
}

.pair-columns::before {
  content: "";
  position: absolute;
  top: 4px;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: #d0d5dd;
  transform: translateX(-50%);
}

.pair-columns h2 {
  margin-bottom: 14px;
  font-size: 32px;
}

.pair-columns ul {
  margin: 0;
  padding-left: 0;
}

.pair-columns li {
  font-size: 24px;
  line-height: 1.18;
}

.pair-columns li + li {
  margin-top: 9px;
}

.pair-columns .pair-list {
  list-style: none;
}

.pair-columns .pair-list li span {
  display: inline-block;
  min-width: 24px;
  text-align: center;
}

.reveal .slides section .labelled-pairs {
  max-width: 890px;
  margin-top: 8px;
}

.reveal .slides section .labelled-pairs li {
  font-size: 23px;
  line-height: 1.1;
}

.reveal .slides section .labelled-pairs li + li {
  margin-top: 8px;
}

.reveal .slides section .labelled-pairs .label-one {
  color: #245bd6;
  font-weight: 700;
}

.reveal .slides section .labelled-pairs .label-zero {
  color: var(--fac-red);
  font-weight: 700;
}

.problem-solution p {
  font-size: 27px;
  line-height: 1.28;
}

.problem-solution video {
  width: 100%;
  max-height: 190px;
}

.video-slide {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 460px;
}

.video-slide video {
  width: 92%;
  max-height: 410px;
  border: 2px solid #cfcfcf;
  box-shadow: 0 8px 22px rgb(0 0 0 / 12%);
}

.layers-slide {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 34px;
  align-items: center;
  margin-top: 18px;
}

.layers-slide ul {
  max-width: none;
}

.layers-slide img {
  width: 100%;
  max-height: 300px;
  border: 2px solid #cfcfcf;
  box-shadow: 0 8px 22px rgb(0 0 0 / 12%);
}

.rules-learning-visual {
  display: block;
  width: 100%;
  max-height: 390px;
  margin-top: 8px;
  border: 2px solid #cfcfcf;
  box-shadow: none;
}

.wide-teaching-visual {
  display: block;
  width: 100%;
  max-height: 390px;
  margin-top: 10px;
  border: 2px solid #cfcfcf;
  box-shadow: none;
}

.and-boundary-prompt {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 285px;
  margin-top: 2px;
}

.and-boundary-prompt img {
  width: min(620px, 62vw);
  max-height: 275px;
  border: 0;
  box-shadow: none;
}

.dataset-comparison-visual {
  display: block;
  width: min(500px, 52vw);
  max-height: 190px;
  margin: 4px auto 0;
  border: 2px solid #cfcfcf;
  box-shadow: none;
}

.dataset-comparison-prompts {
  max-width: 960px;
  margin: 14px 0 0;
}

.reveal .slides section .dataset-comparison-prompts p {
  margin: 0;
  font-size: 21px;
  line-height: 1.18;
  font-weight: 700;
}

.reveal .slides section .dataset-comparison-prompts p + p {
  margin-top: 10px;
}

.weights-bias-visual {
  display: block;
  width: min(680px, 66vw);
  max-height: 285px;
  margin: 4px auto 0;
  border: 2px solid #cfcfcf;
  box-shadow: none;
}

.paired-mechanism-visuals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: center;
  margin-top: 6px;
}

.paired-mechanism-visuals img {
  display: block;
  width: 100%;
  max-height: 260px;
  border: 2px solid #cfcfcf;
  box-shadow: none;
}

.mechanism-visual {
  display: block;
  width: min(760px, 72vw);
  max-height: 310px;
  margin: 8px auto 0;
  border: 2px solid #cfcfcf;
  box-shadow: none;
}

.reveal .slides section img.story-beat-visual {
  display: block;
  width: min(960px, 84vw);
  max-height: 455px;
  margin: 10px auto 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.discussion-question,
.large-question {
  max-width: 980px;
  margin: 20px 0 0;
  font-size: 32px;
  line-height: 1.16;
  font-weight: 700;
}

.perceptron-flow-visual {
  display: block;
  width: min(760px, 72vw);
  max-height: 285px;
  margin: 8px auto 0;
  border: 0;
  box-shadow: none;
}

.perceptron-reveal {
  margin-top: 28px;
  font-size: 34px;
  line-height: 1.22;
  font-weight: 700;
}

.perceptron-reveal-list {
  margin-top: 36px;
  max-width: 720px;
}

.perceptron-reveal-list li {
  margin: 12px 0;
  font-size: 32px;
  line-height: 1.24;
  font-weight: 700;
}

.reveal .slides section img.sample-boundary-visual {
  display: block;
  width: min(960px, 84vw);
  max-height: 320px;
  margin: 0 auto 0;
  border: 0;
  background: transparent;
  object-fit: contain;
  box-shadow: none;
}

.reveal .slides section img.sample-boundary-visual--raised {
  margin-top: -28px;
}

.reveal .slides section .slide-anchor {
  margin: -18px 0 22px;
  font-size: 20px;
  font-weight: 600;
  color: #59636e;
}

.reveal .slides section .sample-caption {
  max-width: 920px;
  margin: 20px 0 0;
  color: var(--fac-black);
  font-weight: 700;
}

.reveal .slides section .figure-text {
  max-width: 1080px;
  margin: 4px auto 0;
  color: var(--fac-muted);
  font-size: 11px;
  font-style: italic;
  font-weight: normal;
  line-height: 1.3;
}

.reveal .slides section .sample-question {
  max-width: 1000px;
  margin: 22px 0 0;
  color: var(--fac-black);
  font-weight: 700;
}

.reveal .slides section .figure-placeholder {
  border: 2px dashed var(--fac-grey);
  border-radius: 4px;
  padding: 24px 32px;
  margin: 16px auto;
  max-width: 900px;
  background: #f8f8f8;
}

.reveal .slides section .figure-description {
  color: var(--fac-muted);
  font-style: italic;
  font-size: 18px;
  line-height: 1.5;
  margin: 0;
}

.reveal .slides section .sample-question--wide {
  max-width: 1900px;
  font-size: 18px;
  line-height: 1.14;
}

.reveal .slides section .sample-formula {
  display: flex;
  justify-content: center;
  align-items: center;
  width: min(960px, 84vw);
  min-height: 240px;
  margin: 0 auto;
  font-size: 34px;
  color: var(--fac-black);
}

.classification-code {
  margin-top: 24px;
}

.classification-code pre {
  width: fit-content;
  min-width: 680px;
  padding: 28px 36px;
  font-size: 36px;
  line-height: 1.28;
}

.classification-code + p {
  margin-top: 28px;
  font-size: 34px;
  line-height: 1.22;
}

.error-table pre,
.update-rule-code pre {
  width: fit-content;
  min-width: 680px;
  padding: 28px 36px;
  font-size: 34px;
  line-height: 1.28;
}

.historical-photo-slide {
  display: grid;
  grid-template-columns: 1fr 1.08fr;
  gap: 36px;
  align-items: center;
  margin-top: 0;
}

.historical-photo-slide p {
  font-size: 23px;
  line-height: 1.34;
  max-width: 385px;
}

.historical-photo-slide p + p {
  margin-top: 22px;
}

.historical-photo-slide img {
  width: 100%;
  max-height: 300px;
  border: 2px solid #cfcfcf;
  box-shadow: 0 8px 22px rgb(0 0 0 / 12%);
}

.reveal .slides section .grid {
  position: relative;
  z-index: 1;
}

.reveal .slides section > * {
  position: relative;
  z-index: 1;
}

.reveal .slides section:has(.fac-title-slide) {
  display: flex !important;
  flex-direction: column;
  justify-content: center;
}

.fac-title-slide {
  text-align: left;
  padding-right: 220px;
}

.fac-title-slide::before {
  content: none;
}

.fac-title-slide h1 {
  max-width: 880px;
  margin: 0 0 28px;
  font-size: 58px;
  line-height: 1.03;
  font-weight: 700;
}

.fac-title-slide h2 {
  max-width: 760px;
  margin: 0 0 26px;
  font-size: 31px;
  font-weight: 700;
}

.fac-title-slide p {
  max-width: 740px;
  color: var(--fac-muted);
  font-size: 24px;
}

.fac-title-slide + * {
  position: relative;
  z-index: 1;
}

.fac-title-materials {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.fac-title-qr {
  width: 160px;
  max-width: 160px;
  max-height: 160px;
  border: 0 !important;
  background: transparent !important;
  object-fit: contain;
}

.fac-title-qr-label {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
}

.reveal .slides section:has(.slide-display) {
  display: flex !important;
  flex-direction: column;
  align-items: center;
}

.slide-display {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 200px;
  font-weight: 700;
  text-align: center;
  width: 100%;
  line-height: 1.1;
}

.lets-build-slide {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 40px;
  text-align: center;
}

.lets-build-slide h1 {
  margin: 0;
  font-size: 72px;
  font-weight: 700;
}

.lets-build-slide img {
  width: 240px;
  border: 0 !important;
  background: transparent !important;
}

.reveal .slides section blockquote {
  margin: 0;
  max-width: 900px;
  font-size: 46px;
  line-height: 1.12;
  font-weight: 700;
}

.reveal .slides section .question-line {
  max-width: 1040px;
  margin: 44px 0 0;
  font-size: 25px;
  line-height: 1.32;
  font-weight: 700;
}

.reveal .slides section .embedding-comparison {
  margin-top: 28px;
}

.reveal .slides section .embedding-comparison > div + div {
  margin-top: 34px;
}

.reveal .slides section .embedding-comparison p {
  margin: 0;
}

.reveal .slides section .chunking-core {
  margin-top: 24px;
}

.reveal .slides section .chunking-core p {
  margin: 0;
  font-size: 25px;
  line-height: 1.32;
}

.reveal .slides section .chunking-core p + p {
  margin-top: 24px;
}

.reveal .slides section .dot-product-revision {
  margin-top: 30px;
}

.reveal .slides section .dot-product-revision p {
  margin: 0;
  font-size: 25px;
  line-height: 1.32;
}

.reveal .slides section .dot-product-revision p + p {
  margin-top: 24px;
}

.reveal .slides section .whiteboard-questions {
  max-width: 1060px;
  margin-top: 24px;
  padding-left: 36px;
}

.reveal .slides section .whiteboard-questions li {
  font-size: 23px;
  line-height: 1.24;
}

.reveal .slides section .whiteboard-questions li + li {
  margin-top: 18px;
}

.get-into-it-slide h1 {
  margin-bottom: 48px;
  font-size: 52px;
}

.get-into-it-content {
  display: grid;
  grid-template-columns: 210px 285px;
  gap: 110px;
  align-items: center;
  justify-content: center;
}

.get-into-it-content img {
  display: block;
  border: 0;
  background: transparent;
  object-fit: contain;
}

.get-into-it-qr {
  width: 210px;
  max-width: 210px;
  max-height: 210px;
}

.get-into-it-card {
  width: 285px;
  max-width: 285px;
  max-height: 235px;
}

.closing-centre {
  display: grid;
  min-height: 360px;
  place-items: center;
  padding-bottom: 34px;
}

.closing-centre p {
  margin: 0;
  font-size: 34px;
  line-height: 1.2;
  font-weight: 700;
}

.closing-centre.closing-large p {
  font-size: 50px;
}

.closing-programme {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 56px;
}

.closing-programme.closing-eligibility {
  margin-top: 76px;
}

.reveal .slides section .closing-programme .closing-logo {
  width: 138px;
  max-width: 138px;
  max-height: 60px;
  margin: 0 0 22px;
  border: 0;
  background: transparent;
}

.closing-programme h1 {
  margin: 0 0 28px;
  max-width: none;
  font-size: 36px;
  line-height: 1.1;
  text-align: center;
}

.closing-feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 460px);
  gap: 16px 24px;
}

.closing-feature-grid div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 54px;
  padding: 0 20px;
  border: 1px solid #d9dee7;
  border-radius: 4px;
  background: #fff;
  color: var(--fac-black);
  font-size: 20px;
  font-weight: 700;
}

.closing-feature-grid span {
  display: inline-flex;
  align-items: center;
  height: 19px;
  margin-left: 12px;
  padding: 0 8px;
  border-radius: 999px;
  background: #f0ecff;
  color: #6f4cc2;
  font-size: 14px;
  font-weight: 700;
}

.closing-feature-grid div:nth-child(2) span {
  background: #fff5d6;
  color: #9a6b00;
}

.closing-feature-grid div:nth-child(3) span {
  background: #e8f0ff;
  color: #245bd6;
}

.closing-feature-grid div:nth-child(4) span {
  background: #ffe8e5;
  color: #c12a16;
}

.closing-eligibility-grid {
  grid-template-columns: repeat(2, 420px);
}

.closing-apply {
  display: grid;
  min-height: 360px;
  place-items: center;
  padding-bottom: 20px;
}

.closing-apply img {
  width: 220px;
  max-width: 220px;
  max-height: 270px;
  border: 0;
  background: transparent;
}

.reveal .slides section:has(.image-only-slide) {
  display: flex !important;
  align-items: center;
  justify-content: center;
}

.image-only-slide {
  display: contents;
}

.image-only-slide img {
  max-width: 100%;
  max-height: 100%;
  border: 0;
  object-fit: contain;
}

.reveal .slides section .accent-yellow {
  background: var(--fac-yellow);
}

.reveal .slides section .accent-red {
  background: var(--fac-red);
}

.reveal .slides section .accent-green {
  background: var(--fac-green);
}

.reveal .slides section .accent-blue {
  background: var(--fac-blue);
}

/* Author-only flow annotations (Purpose / Next) — preview only, stripped by generate.mjs --publish */
.reveal .flow-annotation {
  max-width: 90%;
  margin: 0.35em auto 0;
  padding-top: 0.25em;
  border-top: 1px solid #e4e8ec;
  text-align: left;
}
.reveal .flow-annotation p {
  margin: 0.1em 0;
  font-size: 10px;
  line-height: 1.25;
  color: #8b949e;
}
.reveal .flow-annotation strong { color: #24292f; font-weight: 600; }
.reveal .flow-annotation p.flow-next { color: #6e7781; }

/* Layout: title
   `**Layout:** title` in slides.md. A title-only slide, centred in the frame. */
/* Reveal sets `display: block` inline on the visible section, so !important is
   required here to centre the title. */
.reveal .slides section.title-slide {
  display: flex !important;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.reveal .slides section.title-slide h1 {
  max-width: 1100px;
  margin: 0;
  font-size: 80px;
  line-height: 1.1;
  text-align: center;
}

/* An optional dateline or attribution under the title. `.slide-anchor` carries a
   negative top margin for the left-aligned body layouts, which pulls it into the
   title here; reset it and let the column flow do the spacing. */
.reveal .slides section.title-slide .slide-anchor {
  margin: 26px 0 0;
  font-size: 26px;
  text-align: center;
}

/* Layout: quote
   `**Layout:** quote` in slides.md. The quote sits in the middle, italicised, with its
   attribution tucked directly beneath it rather than pushed to the foot of the slide. */
.reveal .slides section.quote-slide {
  display: flex !important;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 600px;
}

.reveal .slides section.quote-slide .slide-display {
  flex: 0 1 auto;
  max-width: 1020px;
  margin: 0;
  font-size: 40px;
  font-style: italic;
  font-weight: 700;
  line-height: 1.3;
}

.reveal .slides section.quote-slide .sample-caption {
  max-width: 1020px;
  margin: 18px 0 0;
  font-size: 22px;
  font-weight: 400;
  text-align: center;
}

/* Dark theme: white on black, opt-in per deck via `<body class="theme-dark">`.
   The projector sits behind the whiteboard Dan wheels in front of it, so a white
   slide spills light across the board. Black keeps the board readable.

   Opt-in rather than a global flip because this stylesheet is shared by every
   published deck, and the older content decks carry SVG figures drawn on white.
   Scoped here, they render unchanged. */

body.theme-dark {
  background: #000;
}

body.theme-dark .reveal .slides section {
  background: #000;
  color: #fff;
}

/* Body copy carries its own explicit black, so inheriting from the section is
   not enough. */
body.theme-dark .reveal .slides section p,
body.theme-dark .reveal .slides section li {
  color: #fff;
}

/* The FAC mark and the bottom hatch are both black artwork on transparency, so
   they disappear on black until inverted. The hatch is held well down in
   opacity: at full strength it becomes a bright band across the foot of the
   slide, directly behind the whiteboard. */
body.theme-dark .reveal .slides section::before {
  filter: invert(1);
}

body.theme-dark .reveal .slides section::after {
  filter: invert(1);
  opacity: 0.16;
}

body.theme-dark .reveal .slides section .slide-anchor {
  color: #b4bcc6;
}

/* QR codes are black modules on a white field with no quiet zone of their own.
   Dropped straight onto black they lose the margin a scanner needs, so the white
   card is restored here in padding. */
body.theme-dark .welcome-qr,
body.theme-dark .lets-build-slide img,
body.theme-dark .closing-apply img {
  box-sizing: border-box;
  padding: 10px;
  border-radius: 4px;
  background: #fff !important;
}

/* Two-tone mark: inverting swaps its black and white halves, which is the
   correct rendering on a dark ground. */
body.theme-dark .reveal .slides section .closing-programme .closing-logo {
  filter: invert(1);
}

body.theme-dark .closing-feature-grid div {
  border-color: #3a3a3a;
  background: #101010;
  color: #fff;
}