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.reveal .slide-number a{border:0}
#counterexample .desktop{height:430px}
.stage video{max-height:446px;align-self:flex-start}
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.linked-stage{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:40px;align-items:center;justify-items:center}
.stage.linked-stage video,.stage.linked-stage .print-poster{width:100%;height:446px}
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/* Actual conversation and deck-preview crops for the opening story. */
.opening-evidence{display:grid;grid-template-columns:610px 46px 448px;gap:24px;align-items:center}
.opening-evidence figure{min-width:0}
.opening-evidence figcaption{font-size:26px;line-height:1.2;font-weight:600;color:var(--muted);margin-bottom:22px}
.opening-request-card{background:white;border:1px solid #dddfe3;border-radius:14px;padding:25px 16px;box-shadow:0 10px 30px #101a2c09}
.reveal .opening-requests img{display:block;width:100%;height:auto;max-height:none}
.opening-arrow{font-size:54px;color:var(--purple);text-align:center;padding-top:50px}
.reveal .opening-result img{display:block;width:448px;height:auto;border-radius:8px;box-shadow:0 12px 30px #101a2c18}

/* Editable arithmetic illustrates successive training targets. */
.cot-worked{display:grid;grid-template-columns:330px 100px 520px;gap:44px;justify-content:center;align-items:center}
.cot-label{display:block;font-size:25px;line-height:1.2;color:var(--muted);margin-bottom:26px}
.reveal .cot-input p{font-size:76px;letter-spacing:-.045em;font-weight:650;white-space:nowrap}
.cot-arrow{font-size:62px;color:var(--purple);text-align:center;padding-top:48px}
.reveal .cot-step{font-size:51px;line-height:1.5;letter-spacing:-.02em;white-space:nowrap}
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.cot-answer span{font-size:26px;font-weight:500;color:var(--muted)}
.cot-removal{height:432px}
.reveal .cot-training-loop{font-size:32px;line-height:1.2;text-align:center;color:var(--purple);font-weight:600;margin-top:8px}
.cot-training-loop span{padding:0 20px}
.cot-demo-stage{flex-direction:column;gap:22px}
.reveal .cot-demo-input{font-size:54px;font-weight:650;line-height:1.1;letter-spacing:-.025em;font-variant-numeric:tabular-nums}
.reveal .cot-demo-stage img{display:block;width:1050px;height:auto;max-height:none;object-fit:contain}
.reveal .cot-demo-link{font-size:32px;line-height:1.2;color:var(--purple);font-weight:600}

/* Editable teaching diagrams for prediction, training and memory. */
.learn-flow{display:grid;grid-template-columns:1fr 210px 1fr;align-items:center;gap:30px;width:100%}
.learning figure{text-align:center}.learning figcaption{font-size:27px;margin-top:22px;color:var(--ink)}
.learn-screen{width:100%;aspect-ratio:4/3;position:relative;overflow:hidden;background:#283e53;border:2px solid #233246;border-radius:3px}
.learn-taskbar{height:14px;position:absolute;bottom:0;left:0;right:0;background:#192839}
.learn-desktop-icon{position:absolute;top:12%;left:7%;width:31px;height:23px;background:#dcff79;border-radius:2px}
.learn-desktop-icon:before{content:"";position:absolute;top:-5px;left:0;width:14px;height:7px;background:#dcff79;border-radius:2px}
.learn-window{position:absolute;left:20%;top:25%;width:68%;height:57%;background:#f5f3ed;border:2px solid #acb7c6;box-shadow:0 8px 15px #0003}
.learn-titlebar{height:30px;display:flex;align-items:center;justify-content:space-between;background:#d8dee7;padding:0 7px;font-size:16px;color:var(--ink)}
.learn-titlebar b{font-size:25px;line-height:1;color:#6b46d8}.learn-files{display:flex;justify-content:space-evenly;align-items:center;height:66%}.learn-files i{width:28px;height:23px;background:#ceb981;border-radius:2px;position:relative}.learn-files i:before{content:"";position:absolute;top:-4px;left:0;width:12px;height:6px;background:#ceb981}
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.learn-prediction{display:grid;grid-template-columns:1fr 235px 1fr;align-items:center;gap:46px;width:100%}.learn-model{border-top:3px solid var(--purple);border-bottom:3px solid var(--purple);padding:28px 0;text-align:center;position:relative;color:var(--purple)}.learn-model:before,.learn-model:after{content:"→";position:absolute;top:42%;font-size:35px;color:var(--muted)}.learn-model:before{left:-36px}.learn-model:after{right:-36px}.learn-model>span{font-size:37px;line-height:1.15;display:block;font-weight:650}.learn-model>small{display:block;font-size:22px;margin-top:16px;color:var(--muted)}
.learn-compare{display:grid;grid-template-columns:1fr 1fr;column-gap:95px;row-gap:20px;width:960px}.learn-compare .learn-screen{aspect-ratio:4/3}.learn-error{grid-column:1/-1;text-align:center;font-size:34px;font-weight:600;color:var(--purple)}.learn-error span{padding:0 20px}
.learn-update{display:grid;grid-template-columns:340px 520px;gap:75px;align-items:center}.learn-feedback{font-size:42px;font-weight:650;line-height:1.2;text-align:center}.learn-feedback .learn-arrow{margin-top:10px}.weight-table{font-variant-numeric:tabular-nums}.weight-head{font-size:33px;color:var(--purple);font-weight:650;margin-bottom:23px}.weight-columns,.weight-row{display:grid;grid-template-columns:1fr 1fr;gap:45px}.weight-columns{font-size:23px;color:var(--muted);padding-bottom:16px;border-bottom:2px solid var(--rule)}.weight-row{font-size:53px;line-height:1.35;padding-top:12px}.weight-row strong{font-weight:600;color:var(--purple)}
.training-cycle{width:1050px;text-align:center}.cycle-steps{display:flex;align-items:center;justify-content:space-around;font-size:50px;font-weight:650}.cycle-steps b{font-size:42px;font-weight:400;color:var(--muted)}.cycle-return{display:block;width:100%;height:110px;margin:12px 0 36px;color:var(--purple)}.training-cycle p{font-size:31px;color:var(--muted)}
.inference-cycle{width:100%}.inference-return{display:block;width:100%;height:58px;margin-top:28px;color:var(--purple)}.inference-label{text-align:center;font-size:27px;color:var(--muted)}
.memory-context{display:grid;grid-template-columns:640px minmax(0,1fr);gap:64px;align-items:center;width:100%}
.memory-context img{width:640px;height:480px;object-fit:contain}
.memory-reminder{border-left:4px solid var(--purple);padding:18px 0 18px 30px}
.memory-reminder span{display:block;font-size:23px;line-height:1.2;color:var(--muted);margin-bottom:20px}
.memory-reminder p{font-size:39px;line-height:1.2;letter-spacing:-.025em;font-weight:650;color:var(--purple)}

/* PAW mechanism slides: scoped, editable HTML/CSS diagrams. */
.paw-stage{height:496px}
.paw-build-flow{display:grid;grid-template-columns:310px 66px 240px 66px 310px;gap:24px;align-items:center;width:1088px;max-width:100%}
.paw-kicker{display:block;font-size:24px;font-weight:600;line-height:1.2;letter-spacing:0;margin-bottom:24px;color:var(--muted)}
.dark .paw-kicker{color:#bec6d5}
.paw-description p{font-size:36px;line-height:1.28;letter-spacing:-.025em}
.paw-arrow{font-size:58px;font-weight:400;color:var(--lime);text-align:center}
.paw-compiler{height:240px;border:2px solid #8b9baf;border-radius:18px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:30px;background:#19273d}
.paw-compiler strong{font-size:34px;font-weight:650}
.paw-model-mark{display:grid;grid-template-columns:repeat(3,16px);gap:14px}
.paw-model-mark i{width:16px;height:16px;border-radius:50%;background:var(--lime)}
.paw-model-mark i:nth-child(3n){opacity:.45}
.paw-artifact{min-height:320px;background:var(--lime);color:var(--ink);border-radius:18px;padding:30px 32px}
.dark .paw-artifact .paw-kicker{color:var(--ink);font-weight:700;margin-bottom:24px}
.paw-artifact-part{display:flex;align-items:center;gap:25px}
.paw-artifact-part strong{font-size:32px;font-weight:600}
.paw-plus{display:block;font-size:24px;margin:10px 0 10px 94px;opacity:.6}
.paw-text-mark{width:66px;height:60px;display:flex;flex-direction:column;justify-content:center;gap:9px}
.paw-text-mark i{display:block;height:5px;border-radius:2px;background:var(--ink);width:60px}
.paw-text-mark i:last-child{width:42px}
.paw-weight-mark{display:grid;grid-template-columns:repeat(3,16px);gap:8px;width:66px}
.paw-weight-mark i{height:16px;border-radius:3px;background:var(--ink)}
.paw-weight-mark i:nth-child(2),.paw-weight-mark i:nth-child(4){opacity:.35}
.paw-run-flow{display:grid;grid-template-columns:300px 54px 330px 54px 150px;gap:42px;align-items:center;width:1056px;max-width:100%}
.paw-io-column,.paw-run-arrows{display:grid;grid-template-rows:145px 145px;gap:55px;align-items:center}
.paw-io{font-size:34px;font-weight:600;line-height:1.2;white-space:normal}
.paw-inputs{text-align:left}.paw-outputs{text-align:left;color:var(--purple)}
.paw-example-label{display:block;font-size:20px;font-weight:500;line-height:1.2;color:var(--muted);margin-bottom:12px}
.paw-outputs .paw-io{font-size:54px}.paw-outputs .paw-unrun{font-size:80px}
.paw-run-arrows{font-size:54px;text-align:center;color:var(--purple);font-weight:400}
.paw-runtime{border:2px solid var(--rule);border-radius:20px;background:white;padding:26px 26px 29px;text-align:center;box-shadow:0 10px 25px #101a2c08}
.paw-same-program{padding:21px 16px;background:var(--lime);border-radius:12px;color:var(--ink)}
.paw-same-program .paw-kicker{font-size:30px;font-weight:700;color:var(--ink);margin-bottom:10px}
.paw-same-program>span:last-child{font-size:24px;color:#34451d}
.paw-runtime-link{font-size:27px;line-height:1;margin:16px 0;color:var(--muted)}
.paw-interpreter{font-size:27px;font-weight:600;line-height:1.2}

/* A captured PAW result, transcribed large, with an audience counting reveal. */
.paw-count-stage{flex-direction:column;gap:0;justify-content:flex-start;padding-top:48px}
.paw-count-word{display:grid;grid-template-columns:repeat(12,62px);gap:9px;font-family:'SFMono-Regular',Consolas,'Liberation Mono',monospace;font-size:82px;line-height:1.12;letter-spacing:0;font-weight:600}
.paw-count-word>span{position:relative;text-align:center}
.paw-count-mark{position:absolute;inset:0;background:var(--paper);color:var(--purple);border-bottom:4px solid currentColor}
.paw-count-mark:after{content:attr(data-count);position:absolute;top:100%;left:0;width:100%;padding-top:6px;font:600 24px/1.2 'Avenir Next','Segoe UI',sans-serif}
.paw-count-comparison{display:grid;grid-template-columns:1fr 1fr;gap:190px;text-align:center;margin-top:63px}
.paw-count-label{display:block;font-size:27px;line-height:1.2;color:var(--muted);white-space:nowrap}
.paw-count-comparison strong{display:block;font-size:112px;line-height:1.12;letter-spacing:-.04em;margin-top:7px;font-weight:650}
.paw-count-observed{color:#b64832}.paw-count-correct{color:var(--purple)}
.reveal .paw-count-link{font-size:29px;line-height:1.2;color:var(--purple);font-weight:600;margin-top:23px}

/* One real conversation, one research question, and a direct invitation. */
.wildchat-prompt{width:1020px;padding:38px 48px 45px;background:#e9e2fa;border-radius:24px;position:relative}
.wildchat-prompt:after{content:"";position:absolute;left:62px;bottom:-22px;border-top:24px solid #e9e2fa;border-right:28px solid transparent}
.wildchat-label{display:block;font-size:22px;line-height:1.2;color:var(--muted);margin-bottom:26px}
.reveal .wildchat-prompt p{font-size:70px;line-height:1.17;letter-spacing:-.035em;font-weight:650;color:var(--purple)}
.reveal .wildchat-explore h2{margin-bottom:18px}
.wildchat-explore .stage{height:442px}
.wildchat-explore .stage video,.wildchat-explore .stage .print-poster{width:1136px;height:442px;max-height:442px;object-fit:contain;align-self:center}
.reveal .wildchat-url{font-size:48px;line-height:1.2;letter-spacing:-.025em;font-weight:650;text-align:center;margin-top:12px;color:var(--purple)}
.reveal .wildchat-url a,.reveal .wildchat-access-url a{border-bottom:2px solid currentColor}
.reveal .wildchat-research-question{max-width:1050px;font-size:77px;line-height:1.17;letter-spacing:-.035em;font-weight:650}
.wildchat-access .stage{flex-direction:column;gap:40px}
.reveal .wildchat-access-url{font-size:85px;line-height:1.2;letter-spacing:-.035em;font-weight:700;color:var(--purple);white-space:nowrap}
.reveal .wildchat-resources{font-size:27px;color:var(--muted)}
.wildchat-map .stage video,.wildchat-map .stage .print-poster{width:1050px;height:446px;object-fit:contain}

/* Native, editable science diagrams; styles scoped to the four mechanism slides. */
.science-mechanism h2{font-size:52px}
.science-mechanism .stage{height:496px}
.science-mechanism h3{font-family:inherit;font-size:34px;line-height:1.17;font-weight:650;letter-spacing:-.025em;text-transform:none;margin:0}
.science-mechanism .sc-arrow{font-size:52px;color:var(--muted);text-align:center;font-weight:400}
.science-mechanism .sc-claim-stage{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:42px}
.science-mechanism .sc-claim-stage .try-demo{width:220px}
.science-mechanism .sc-claim-flow{width:100%;display:grid;grid-template-columns:236px 148px minmax(0,1fr);gap:20px;align-items:center}
.science-mechanism .sc-paper{height:286px;padding:26px 27px;background:#fff;border:2px solid var(--rule);border-radius:4px}
.science-mechanism .sc-paper h3{font-size:34px}
.science-mechanism .sc-paper-lines{display:grid;gap:17px;margin-top:29px}
.science-mechanism .sc-paper-lines i{height:7px;background:#c4cbd5;border-radius:2px;width:100%}
.science-mechanism .sc-paper-lines i:nth-child(2){width:84%}
.science-mechanism .sc-paper-lines i:last-child{width:70%}
.science-mechanism .sc-paper-lines i.sc-selected{height:20px;background:#e4d9ff;border-left:6px solid var(--purple)}
.science-mechanism .sc-connector{text-align:center;color:var(--purple)}
.science-mechanism .sc-connector span{font-size:26px;white-space:nowrap}
.science-mechanism .sc-connector b{display:block;font-size:63px;font-weight:400;line-height:1.2;margin-top:12px}
.science-mechanism .sc-claim-card{border-top:3px solid var(--purple);border-bottom:3px solid var(--purple);padding:30px 0}
.science-mechanism .sc-claim-card h3{font-size:40px}
.science-mechanism .sc-evidence-link{margin-top:27px;padding-top:20px;border-top:1px solid var(--rule);font-size:27px;color:var(--accent);white-space:nowrap}
.science-mechanism .sc-training-flow{display:grid;grid-template-columns:255px 50px 250px 50px minmax(0,1fr);gap:25px;align-items:center;width:100%}
.science-mechanism .sc-known{border-top:3px solid var(--purple);border-bottom:3px solid var(--purple);padding:32px 20px;text-align:center}
.science-mechanism .sc-known h3{font-size:38px}
.science-mechanism .sc-known p{font-size:25px;color:var(--muted);margin-top:23px}
.science-mechanism .sc-simulator{padding:33px 18px;background:#ece6fa;border:2px solid #d9cdef;text-align:center;border-radius:6px}
.science-mechanism .sc-simulator h3{font-size:34px;color:var(--purple)}
.science-mechanism .sc-curve-card{width:100%;text-align:center}
.science-mechanism .sc-curve{display:block;width:100%;height:218px;overflow:visible}
.science-mechanism .sc-curve-card figcaption{font-size:29px;font-weight:600;margin-top:18px}
.science-mechanism .sc-axis{fill:none;stroke:#78859a;stroke-width:2}
.science-mechanism .sc-zero{fill:none;stroke:#e2e5e9;stroke-width:1.5}
.science-mechanism .sc-sim-line{fill:none;stroke:var(--purple);stroke-width:5;stroke-linecap:round;stroke-linejoin:round}
.science-mechanism .sc-measured-line{fill:none;stroke:var(--ink);stroke-width:5;stroke-linecap:round;stroke-linejoin:round}
.science-mechanism .sc-inference-flow{width:100%;display:grid;grid-template-columns:263px 48px 198px 48px minmax(0,1fr);gap:22px;align-items:center}
.science-mechanism .sc-inverse-model{padding:43px 15px;border-top:3px solid var(--purple);border-bottom:3px solid var(--purple);text-align:center}
.science-mechanism .sc-inverse-model h3{font-size:35px;color:var(--purple)}
.science-mechanism .sc-causes h3{font-size:29px;margin-bottom:25px}
.science-mechanism .sc-cause{border-top:1px solid var(--rule);padding:17px 0}
.science-mechanism .sc-cause>span{display:block;font-size:41px;color:var(--purple);font-weight:650;line-height:1.1;letter-spacing:-.02em}
.science-mechanism .sc-cause sup{font-size:.53em;vertical-align:super}
.science-mechanism .sc-cause p{font-size:28px;line-height:1.22;margin-top:12px}
.science-mechanism .sc-check-flow{width:100%;display:grid;grid-template-columns:220px 43px 205px 43px minmax(0,1fr);gap:20px;align-items:center}
.science-mechanism .sc-check-candidate{border-top:3px solid var(--purple);border-bottom:3px solid var(--purple);padding:35px 0;text-align:center}
.science-mechanism .sc-check-candidate h3{font-size:33px}
.science-mechanism .sc-comparison{width:100%;text-align:center}
.science-mechanism .sc-comparison svg{display:block;width:100%;height:286px;overflow:visible}
.science-mechanism .sc-reconstruction-line{fill:none;stroke:var(--purple);stroke-width:4;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:10 8}
.science-mechanism .sc-legend{font-size:25px;line-height:1.2;display:flex;flex-direction:column;gap:13px;align-items:flex-start;padding-left:34px;margin-top:14px}
.science-mechanism .sc-legend span{display:flex;align-items:center;gap:15px}
.science-mechanism .sc-key{display:inline-block;width:41px;border-top:4px solid var(--ink)}
.science-mechanism .sc-key-simulated{border-top:4px dashed var(--purple)}

/* Real recorded NeuralOS learning example: preserve full 4:3 frames. */
.learn-real-pair{display:grid;grid-template-columns:minmax(0,1fr) 150px minmax(0,1fr);gap:28px;align-items:center;width:100%}
.learn-real figure{min-width:0;text-align:center;margin:0}
.reveal .learn-real img.learn-real-screen{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:contain;border:1px solid #c4c9d1;max-height:none}
.learn-real figcaption{font-size:26px;line-height:1.2;margin-top:15px;color:var(--ink)}
.learn-real-unknown{width:100%;aspect-ratio:4/3;display:grid;place-items:center;border:3px dashed var(--rule);color:var(--purple)}
.learn-real-unknown>span{font-size:120px;font-weight:650}
.learn-real-action{text-align:center;color:var(--ink)}
.learn-real-action>span{display:block;font-size:24px;margin-bottom:9px}
.learn-real-action kbd{display:inline-block;font:650 28px/1.2 'Avenir Next','Segoe UI',sans-serif;border:2px solid var(--purple);border-radius:7px;padding:10px 12px;color:var(--purple);box-shadow:0 3px 0 #6b46d829}
.learn-real-action b{display:block;font-size:55px;font-weight:400;line-height:1.15;margin-top:10px;color:var(--purple)}
.learn-real-model{position:relative;text-align:center;border-top:3px solid var(--purple);border-bottom:3px solid var(--purple);padding:24px 0}
.learn-real-model:before,.learn-real-model:after{content:'→';position:absolute;top:44%;font-size:29px;color:var(--muted)}
.learn-real-model:before{left:-26px}.learn-real-model:after{right:-26px}
.learn-real-model>span{font-size:31px;line-height:1.14;font-weight:650;color:var(--purple);display:block}
.learn-real-model>small{font-size:21px;line-height:1.25;margin-top:15px;color:var(--muted);display:block}
.learn-real-compare{display:grid;grid-template-columns:1fr 1fr;gap:20px 48px;width:1072px;max-width:100%;align-items:start}
.learn-real-error{grid-column:1/-1;font-size:32px;font-weight:600;color:var(--purple);line-height:1.2;text-align:center}
.learn-real-error>span{padding:0 22px}
.learn-real-inference{width:100%}
.learn-real-inference .learn-real-pair{grid-template-columns:minmax(0,1fr) 190px minmax(0,1fr);gap:38px}
.learn-real-return{display:block;width:100%;height:42px;margin-top:15px;color:var(--purple)}
.learn-real-repeat{text-align:center;font-size:26px;line-height:1.2!important;color:var(--muted);margin-top:5px!important}

/* Keep student resources visible throughout questions. */
.closing-grid{display:grid;grid-template-columns:minmax(0,1fr) 244px;gap:48px;align-items:center}
.reveal .closing-grid h2{max-width:820px}
.reveal .closing-qr{width:244px;text-align:center}
.reveal .closing-qr a{display:block;border:0}
.reveal .closing-qr img{display:block;width:244px;height:244px;background:white;margin:0 auto 20px}
.closing-qr figcaption{font-size:24px;line-height:1.3;color:var(--lime)}

/* Bing's chemistry examples, using the shared typography and palette. */
.chem-medicine{display:grid;grid-template-columns:290px 1fr;gap:20px}
.chem-medicine>p{font-size:62px;font-weight:650;letter-spacing:-.035em}
.chem-medicine>img{width:100%;height:440px;object-fit:contain}
.chem-reaction{flex-direction:column;gap:22px}
.chem-before-after{display:flex;justify-content:space-around;width:100%;font-size:29px;color:var(--muted)}
.chem-reaction>img{width:1120px;height:370px;object-fit:contain}
.chem-askchem{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:38px}
.chem-query{font-size:53px;line-height:1.2!important;font-weight:650;letter-spacing:-.025em;color:var(--purple)}
.chem-source-flow{display:flex;align-items:center;gap:24px;font-size:28px;margin-top:58px}
.chem-source-flow b{color:var(--purple);font-weight:500}
.chem-route-comparison{gap:65px;text-align:center}
.chem-route-comparison figure{width:390px}
.chem-route-comparison figcaption{font-size:28px;color:var(--muted)}
.chem-route-comparison strong{display:block;font-size:200px;line-height:1.15;font-weight:700;letter-spacing:-.06em}
.chem-route-comparison figure p{font-size:31px}
.chem-big-arrow{font-size:76px;color:var(--purple)}
.chem-claim-check{flex-direction:column;gap:62px}
.chem-claim-check blockquote{margin:0;font-size:48px;line-height:1.3;text-align:center;font-weight:600;letter-spacing:-.025em}
.chem-vote{display:flex;justify-content:center;align-items:center;gap:95px;width:100%}
.chem-vote p{font-size:34px;line-height:1.2}
.chem-vote p>span{font-size:23px;color:var(--muted);display:block;margin-bottom:15px}
.reveal .fragment.chem-answer{opacity:1;visibility:inherit}
.reveal .fragment.chem-answer.visible{color:var(--purple);font-weight:700}
.chem-shape-question{flex-direction:column;gap:18px}
.chem-shape-pair{display:grid;grid-template-columns:1fr 70px 1fr;align-items:center;gap:30px;width:100%}
.chem-shape-pair img{width:100%;height:335px;object-fit:contain}
.chem-shape-pair>span{font-size:65px;color:var(--purple);text-align:center}
.chem-bonds{width:1100px;height:360px;object-fit:contain}
.chem-model-flow{display:grid;grid-template-columns:350px 65px 250px 65px 310px;gap:24px;align-items:center;width:100%;text-align:center}
.chem-model-flow h3{font-size:36px;line-height:1.25;letter-spacing:-.02em}
.chem-model-flow p{font-size:23px;color:var(--muted);margin-top:30px}
.chem-model-flow>span{font-size:52px;color:var(--muted)}
.chem-model{border-top:3px solid var(--purple);border-bottom:3px solid var(--purple);padding:48px 10px;color:var(--purple)}
.chem-eva-grid{display:grid;grid-template-columns:200px 1fr 1fr;grid-template-rows:40px 200px 200px;align-items:center;gap:16px 18px;width:100%}
.chem-eva-grid h3{font-size:28px;text-align:center}
.chem-eva-grid p{font-size:30px;line-height:1.2;font-weight:600}
.chem-eva-grid img{width:100%;height:200px;object-fit:contain}
.chem-pathways{width:100%;display:flex;flex-direction:column;gap:68px}
.chem-pathways>div{display:grid;grid-template-columns:210px 110px 180px 220px 180px 110px;align-items:center;justify-content:center;position:relative}
.chem-pathways>div:first-child{grid-template-columns:210px 110px 580px 110px}
.chem-pathways p{font-size:26px;color:var(--muted)}
.chem-species{font-size:76px;font-weight:650;text-align:center;position:relative}
.chem-species small{position:absolute;top:100%;left:50%;transform:translateX(-50%);white-space:nowrap;font-size:24px;font-weight:500;margin-top:14px}
.chem-long-arrow{font-size:150px;line-height:1;text-align:center;color:var(--muted);justify-self:center;transform:scaleX(2.4)}
.chem-short-arrow{font-size:65px;text-align:center;color:var(--muted)}
.chem-when{flex-direction:column;gap:55px}
.chem-short-path{font-size:66px;letter-spacing:.05em}
.chem-short-path strong{border-bottom:4px solid var(--ink)}
.chem-when .experiment-options>div{font-size:40px;line-height:1.2}
.chem-snapshots{gap:22px}
.chem-snapshot{width:300px}
.chem-snapshot figcaption{font-size:28px;text-align:center;margin-bottom:28px;color:var(--muted)}
.chem-snapshot>div{display:grid;grid-template-columns:1fr 1fr;gap:25px 32px;justify-items:center;padding:28px;border:2px solid var(--rule)}
.chem-snapshot span{width:64px;height:64px;border:2px solid currentColor;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:36px;line-height:1}
.chem-snapshot .species-b{color:var(--purple);background:#eee8fb;font-weight:650}
.chem-snapshot .species-c{color:var(--accent)}
.chem-snapshot-arrow{font-size:42px;color:var(--muted);padding-top:60px}
.chem-spark-flow{width:100%;display:flex;flex-direction:column;gap:70px}
.chem-spark-flow>div{display:grid;grid-template-columns:225px 355px 90px 415px;gap:20px;align-items:center}
.chem-spark-flow p{font-size:24px;color:var(--muted)}
.chem-spark-flow h3{font-size:33px;line-height:1.25;font-weight:600}
.chem-spark-flow span{font-size:52px;color:var(--muted)}
.chem-failure{width:100%;display:flex;flex-direction:column;gap:60px;padding:0 35px}
.chem-failure h3{font-size:28px;color:var(--muted);margin-bottom:22px}
.chem-failure p{display:flex;align-items:center;gap:36px;font-size:50px;font-weight:600}
.chem-failure b{font-size:40px;font-weight:400;color:var(--muted)}
.chem-extra{display:flex;align-items:center;gap:36px}
.chem-extra strong,.chem-extra b{color:#b8442d}
.chem-extra strong{font-weight:650;border-bottom:3px solid #b8442d}
.chem-consistency{display:grid;grid-template-columns:1fr 100px 1fr;gap:35px;text-align:center;align-content:center}
.chem-consistency>div>p{font-size:72px;font-weight:650;letter-spacing:-.035em}
.chem-consistency>div>span{font-size:27px;color:var(--muted);display:block;margin-top:23px}
.chem-consistency>b{font-size:65px;color:var(--purple)}
.chem-consistency-caption{grid-column:1/-1;font-size:35px;color:var(--purple);margin-top:48px!important}

/* Clear chapters and a compact, presenter-paced explanation. */
.reveal .section-divider{display:flex!important;align-items:center;justify-content:center;text-align:center}
.reveal .section-divider h2{font-size:88px;line-height:1.1;margin:0;max-width:1110px}
.presenter-layout{display:grid;grid-template-columns:320px 1fr;gap:80px;height:610px;align-items:center}
.presenter-layout>img{width:320px;height:370px;object-fit:cover;object-position:center;border-radius:6px}
.reveal .presenter-layout h2{font-size:68px;margin-bottom:24px}
.reveal .presenter-role{font-size:29px;line-height:1.35;color:var(--muted)}
.reveal .presenter-focus{font-size:34px;margin:28px 0;color:var(--purple)}
.reveal .presenter-contact{font-size:27px;line-height:1.65}
.reveal .presenter-contact a{border:0}
.media-reveal{display:grid;grid-template:1fr/1fr}
.media-reveal>*{grid-area:1/1}
.reveal .media-reveal .video-prompt{font-size:46px;line-height:1.25;max-width:980px;margin:auto;color:var(--paper)}
.media-reveal video{width:100%;height:496px;max-height:496px;align-self:center}
.reveal .os-subtitle{font-size:34px;color:var(--muted);margin-top:-5px}
.os-loop{height:450px;flex-direction:column;gap:12px;justify-content:center}
.os-loop-row{display:grid;grid-template-columns:200px 310px 160px 310px;gap:22px;align-items:center;width:100%}
.os-loop figure{text-align:center;align-self:start}
.os-loop figcaption{font-size:24px;margin-bottom:18px;color:var(--muted)}
.os-loop-row img{width:100%;height:auto;aspect-ratio:4/3;object-fit:contain}
.os-history>div{display:flex;gap:8px;align-items:center;height:234px}
.os-history img{width:96px;opacity:.6}.os-history img:first-child{opacity:.4}
.reveal .os-action{font-size:28px;color:var(--purple);margin-top:15px;font-weight:650}
.os-model{text-align:center;padding-top:66px;color:var(--purple);display:flex;flex-direction:column;gap:15px}
.os-model strong{font-size:28px}.os-model span{font-size:42px;line-height:.7}
.os-repeat{width:100%;text-align:center;color:var(--purple)}
.os-repeat svg{width:100%;height:45px}.reveal .os-repeat p{font-size:27px;line-height:1.2}
.learning-three{display:grid;grid-template-columns:1fr 65px 1fr 65px 1fr;align-items:center;width:100%;gap:12px;text-align:center}
.learning-three .learning-number{font-size:28px;color:var(--muted)}
.learning-three h3{font-size:48px;margin:16px 0 22px;color:var(--purple);font-weight:650}
.learning-three p{font-size:27px;line-height:1.4}
.learning-link{font-size:50px;color:var(--muted)}
.learning-three .learning-repeat{grid-column:1/-1;font-size:33px;margin-top:58px;color:var(--purple)}
.failure-types{display:grid;grid-template-columns:1fr 1fr;gap:70px;width:100%}
.failure-types>div{border-top:3px solid var(--purple);padding-top:26px}
.failure-types span{font-size:28px;color:var(--purple)}
.failure-types h3{font-size:39px;line-height:1.16;margin:20px 0 26px}
.failure-types p{font-size:31px;line-height:1.4;color:var(--muted)}
.reveal .closing-contacts{display:flex;gap:45px;margin-top:35px}
.reveal .closing-contacts p{font-size:22px;line-height:1.6;margin:0}
.closing-contacts strong,.closing-contacts a{display:block}.closing-contacts a{border:0!important}
.reveal #questions .closing-grid h2{font-size:76px}
@media(prefers-reduced-motion:reduce){.reveal .fragment{transition:none!important}}

/* Three-slide implicit-reasoning section. Uses the existing Reveal theme. */
.reveal .cot-chapter{display:flex!important;align-items:center;justify-content:center;text-align:center}
.reveal .cot-chapter h2{font-size:82px;line-height:1.1;max-width:1100px;margin:0}
.reveal .cot-curriculum h2{font-size:50px}
.cot-curriculum-stage{display:grid;grid-template-columns:370px 610px;gap:90px;padding:8px 35px 0;align-items:center}
.cot-long-multiplication{width:320px;justify-self:center;font-size:67px;line-height:1.12;font-weight:650;letter-spacing:.045em;font-variant-numeric:tabular-nums;text-align:right}
.cot-multiply-input{display:flex;flex-direction:column;border-bottom:3px solid var(--ink);padding-bottom:13px;gap:4px}
.cot-multiply-input span:last-child{position:relative}
.cot-multiply-input b{position:absolute;left:8px;font-weight:500}
.cot-multiply-working span{position:relative}
.cot-multiply-working b{position:absolute;left:8px;font-size:52px;font-weight:500}
.cot-multiply-working{display:flex;flex-direction:column;gap:5px;padding:13px 0}
.cot-multiply-answer{border-top:3px solid var(--ink);padding-top:13px;color:var(--purple)}
.cot-teaching-stages{position:relative;height:300px;display:flex;align-items:center}
.cot-teaching-stage{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center}
.reveal .cot-teaching-stage p{font-size:49px;line-height:1.26;letter-spacing:-.025em}
.cot-teaching-stage strong{font-weight:700;color:var(--purple)}
.reveal .cot-teaching-stage .cot-endpoint{font-size:28px;line-height:1.3;color:var(--muted);margin-top:24px;letter-spacing:0}
.cot-demo-reveal .cot-demo-stage{gap:30px;justify-content:center}
.reveal .cot-demo-reveal .cot-actual-result{width:1050px;height:303px}
.reveal .cot-demo-reveal .cot-actual-result img{width:100%;height:100%;object-fit:contain}
.reveal .cot-demo-reveal .cot-demo-link{font-size:30px}
@media print{.cot-teaching-stage{display:none!important}.cot-teaching-stage:first-child{display:flex!important;opacity:1!important;visibility:visible!important}}

/* A recurring learning idea, reused for English programming. */
.theme-flow{display:grid;grid-template-columns:1fr 55px 1fr 55px 1fr;gap:25px;text-align:center}
.theme-flow h3{font-size:42px;color:var(--purple);margin-bottom:28px;letter-spacing:-.025em}
.theme-flow p{font-size:29px;line-height:1.35;color:var(--muted)}.theme-flow>span{font-size:48px;color:var(--muted)}
.reveal #learning-theme .theme-flow h3{margin:0;font-size:40px}
.english-program-stage{display:grid;grid-template-columns:710px 1fr;grid-template-rows:230px 230px;gap:25px 35px;align-content:center}
.reveal .english-program-stage blockquote{font-size:47px;line-height:1.25;margin:0;letter-spacing:-.025em}
.english-program-output{display:flex;gap:30px;align-items:center;color:var(--purple)}
.english-program-output strong{font-size:41px;line-height:1.1}.english-arrow{font-size:54px}
.english-example{grid-column:1/-1;border-top:2px solid var(--rule);padding-top:28px;display:grid;grid-template-columns:1fr 310px;gap:10px 30px;align-items:center}
.english-example p{grid-row:1/3;font-size:37px;line-height:1.3;max-width:740px}
.english-example>span{font-size:23px;color:var(--muted)}.english-example strong{font-size:35px;color:var(--purple)}
.language-context{flex-direction:column;align-items:flex-start;gap:58px;padding-left:80px}
.language-context>div{display:grid;grid-template-columns:550px 1fr;gap:45px;align-items:center;width:100%}
.language-context p{font-size:54px;font-weight:600;letter-spacing:-.035em}.language-context strong{font-size:29px;color:var(--purple)}
.reveal .highlight-current-purple.current-fragment{color:var(--purple);border-bottom:3px solid var(--purple)}
.paw-examples{flex-direction:column;align-items:stretch;gap:45px}
.paw-example-row{display:grid;grid-template-columns:230px 1fr 175px;gap:30px;align-items:center;padding:28px 0;border-top:2px solid var(--rule)}
.paw-example-row p{font-size:31px;line-height:1.3}.paw-example-row .paw-task{font-weight:650;color:var(--purple)}
.paw-example-row strong{font-size:35px;color:var(--purple)}
.reveal .paw-example-takeaway{font-size:37px;text-align:center;color:var(--purple);margin-top:18px}
.paw-learning-flow{flex-direction:column;gap:55px}
.paw-builder-row{display:grid;grid-template-columns:290px 65px 300px 65px 300px;gap:25px;width:100%;text-align:center;align-items:center}
.paw-builder-row span{font-size:25px;color:var(--muted)}.paw-builder-row p{font-size:35px;line-height:1.3;margin-top:20px;font-weight:600}
.paw-builder-row b{font-size:48px;font-weight:400;color:var(--purple)}
.paw-feedback{border-top:2px solid var(--purple);padding-top:26px;width:100%;text-align:center}
.paw-feedback span,.paw-feedback strong{display:block;font-size:33px;line-height:1.4}.paw-feedback strong{color:var(--purple);margin-top:9px}
.helper-demo{flex-direction:column;gap:35px;justify-content:center}
.stage.helper-demo video{width:1080px;height:405px;max-height:405px;align-self:center}
.helper-demo p{font-size:38px;font-weight:600;color:var(--lime)}
.reveal .counting-tool{font-size:24px;display:flex;align-items:center;gap:18px;color:var(--muted);margin-top:18px}
.counting-tool code{font-family:Consolas,monospace;font-size:27px;color:var(--ink)}.counting-tool strong{font-size:38px;color:var(--purple)}
.reveal .backup-return{position:absolute;bottom:25px;left:64px;font-size:21px;border:0;color:var(--muted)}
#paw-counting-failure .paw-count-stage{padding-top:0}
.reveal .count-instruction{font-size:29px;color:var(--muted);margin-bottom:24px}

/* Deliberate line breaks: full-width opening and coherent headline phrases. */
.reveal #beyond-chatgpt .cover{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:30px;height:490px;text-align:center}
.reveal #beyond-chatgpt h1{font-size:112px;line-height:1.04;letter-spacing:-.045em;white-space:nowrap}
.reveal #beyond-chatgpt .cover-subtitle{font-size:56px;line-height:1.18;letter-spacing:-.025em;font-weight:600;color:var(--lime);white-space:nowrap}
.reveal #beyond-chatgpt .cover-names,.reveal #beyond-chatgpt .event{text-align:center}
.reveal #beyond-chatgpt .cover-names{font-size:29px}
.reveal #beyond-chatgpt .event{font-size:21px}
.reveal #worked-solution h2{font-size:78px;line-height:1.18;max-width:1140px}
.reveal .wildchat-research-question{font-size:68px;line-height:1.22;max-width:1130px;text-align:center}
.reveal #your-project h2,.reveal #your-test h2{max-width:1152px;white-space:nowrap}
.morning-exchange{flex-direction:column;align-items:stretch;justify-content:center;gap:58px;padding:0 45px}
.morning-exchange figcaption{font-size:25px;line-height:1.2;color:var(--muted);margin-bottom:19px}
.reveal .morning-request img{width:100%;height:auto;max-height:none;border-radius:20px}
.morning-answer{padding-left:28px;border-left:4px solid var(--purple)}
.reveal .morning-answer blockquote{margin:0;font-size:80px;line-height:1.15;letter-spacing:-.035em;font-weight:650;color:var(--purple)}

/* Mental challenge -> staged training -> actual result. */
.reveal #worked-solution.cot-v2 h2{font-size:85px;line-height:1.16;max-width:1120px}
.cot-challenge-stage{flex-direction:column;gap:27px;justify-content:center}
.reveal .cot-challenge-problem{font-size:78px;line-height:1.16;letter-spacing:-.04em;font-weight:650;font-variant-numeric:tabular-nums;white-space:nowrap}
.reveal .cot-challenge-rule{font-size:32px;color:var(--muted)}
.cot-challenge-baseline{margin-top:40px;padding-top:27px;border-top:2px solid var(--rule);width:100%;text-align:center}
.reveal .cot-challenge-baseline p{font-size:40px;line-height:1.2;color:var(--purple);font-weight:650}
.cot-challenge-baseline span{display:block;font-size:27px;line-height:1.3;color:var(--muted);margin-top:17px}
.reveal .cot-v2.cot-curriculum h2{font-size:51px;white-space:nowrap}
.reveal .cot-v2 .cot-teaching-stage p{font-size:48px;line-height:1.25}
.reveal .cot-v2 .cot-teaching-stage .cot-endpoint{font-size:28px;line-height:1.3}
.cot-v2.cot-demo-reveal .cot-demo-stage{gap:21px}
.reveal .cot-v2 .cot-demo-input{font-size:54px}
.reveal .cot-v2.cot-demo-reveal .cot-demo-link{font-size:29px;line-height:1.3;white-space:nowrap;font-weight:600;letter-spacing:-.02em}

/* Real training-stage outputs, revealed as a comparison and improvement. */
.training-visual-stage{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 44px;gap:12px 58px;align-items:start;justify-items:center}
.training-visual-stage figure{width:480px;max-width:100%;text-align:center}
.training-visual-stage figcaption{font-size:29px;line-height:1.2;margin-bottom:14px;font-weight:600}
.training-image-stack{position:relative;width:480px;height:360px}
.training-image-stack img{position:absolute;inset:0;width:480px;height:360px;object-fit:contain}
.training-target img{width:480px;height:360px;object-fit:contain}
.reveal .training-after{font-size:25px;line-height:1.1;margin-top:10px;color:var(--purple);font-weight:600}
.training-steps{grid-column:1/-1;display:flex;gap:24px;align-items:center;justify-content:center;font-size:33px;line-height:1.2;font-weight:600;color:var(--purple)}
.training-steps b{font-weight:400;color:var(--muted);margin-right:18px}
/* A real prediction/target pair and an explicitly illustrative learning curve. */
.training-error-stage{display:grid;grid-template-columns:700px 420px;gap:32px;align-items:center}
.training-comparison{display:grid;grid-template-columns:340px 340px;gap:24px 20px;align-items:start}
.training-comparison figure{width:340px;text-align:center}
.training-comparison figcaption{font-size:28px;line-height:1.2;font-weight:600;margin-bottom:18px}
.training-comparison .training-image-stack,.training-comparison .training-image-stack img,.training-comparison figure>img{width:340px;height:255px;object-fit:contain}
.reveal .training-comparison .training-after{font-size:24px;line-height:1.2;margin-top:13px}
.reveal .training-compare-caption{grid-column:1/-1;text-align:center;font-size:28px;line-height:1.2;color:var(--purple);margin-top:4px}
.training-curve{border-left:2px solid var(--rule);padding-left:22px;width:420px;box-sizing:border-box}
.training-curve h3{font-size:28px;line-height:1.2;text-align:center;margin:0 0 18px}
.training-curve svg{width:398px;height:294px;overflow:visible}
.curve-axis{fill:none;stroke:var(--muted);stroke-width:2}
.curve-label{fill:var(--muted);font-size:24px;font-family:inherit}
.curve-line{fill:none;stroke:var(--purple);stroke-width:6;stroke-linecap:round}
.curve-start,.curve-result circle{fill:var(--purple)}
.reveal .training-curve>p{text-align:center;font-size:30px;line-height:1.2;color:var(--purple);font-weight:600;margin-top:18px}
/* Show a program's input first; reveal its output on the presenter's click. */
.english-io-stage{display:flex;flex-direction:column;align-items:stretch;justify-content:center;gap:70px}
.reveal .english-io-stage blockquote{font-size:43px;line-height:1.25;font-weight:600;letter-spacing:-.025em;margin:0;white-space:nowrap}
.english-io-example{display:grid;grid-template-columns:570px 70px 1fr;gap:35px;align-items:start;border-top:2px solid var(--rule);padding-top:45px}
.english-io-example h3{font-size:27px;color:var(--muted);margin:0 0 23px;line-height:1.2;font-weight:500}
.reveal .english-io-example p{font-size:43px;line-height:1.27;letter-spacing:-.025em;margin:0}
.reveal .english-output p{color:var(--purple);font-weight:650;white-space:nowrap}
.english-io-arrow{font-size:55px;color:var(--purple);padding-top:52px}
.model-program-stage{display:flex;flex-direction:column;align-items:stretch;justify-content:center;gap:48px;padding:0 55px}
.model-program-comparison h3{font-size:27px;color:var(--muted);font-weight:500;margin:0 0 18px}
.model-program-comparison p{display:grid;grid-template-columns:260px 100px 1fr;align-items:center;font-size:49px;line-height:1.2;color:var(--muted)}
.model-program-comparison b{font-weight:400}
.model-program-new{border-top:2px solid var(--rule);padding-top:35px}
.model-program-new h3,.model-program-new p{color:var(--purple)}
.model-program-new p{font-weight:650}
.model-function{font-size:28px;margin-left:360px;margin-top:24px;color:var(--ink)}
.model-function b{margin:0 25px;color:var(--purple)}
.verb-real-stage{display:flex;flex-direction:column;gap:43px;align-items:stretch;justify-content:center;height:450px}
.verb-real-stage figure{margin:0}
.verb-real-stage figcaption{font-size:26px;color:var(--muted);margin-bottom:17px}
.verb-spec img{width:660px;height:110px;object-fit:contain;object-position:left center}
.verb-real-io{display:grid;grid-template-columns:620px 65px 1fr;gap:32px;border-top:2px solid var(--rule);padding-top:32px;align-items:start}
.verb-input img{width:620px;height:100px;object-fit:contain;object-position:left top}
.verb-output img{width:370px;height:100px;object-fit:contain;object-position:left top}
.verb-real-arrow{font-size:54px;color:var(--purple);padding-top:48px}
.reveal .verb-live-link{position:absolute;left:64px;bottom:31px;font-size:27px;font-weight:600;color:var(--purple)}
.reveal .visible-demo-url{font-size:34px;line-height:1.3;font-weight:600;letter-spacing:-.02em;color:var(--purple)}
.reveal .dark .visible-demo-url{color:var(--lime)}
.reveal .count-demo-url{position:absolute;bottom:25px;left:64px;font-size:26px;white-space:nowrap}
.reveal .chem-askchem{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:50px}
.reveal .chem-askchem .visible-demo-url{font-size:43px}
.reveal #test-explanation h2{max-width:1120px!important}
.reveal #test-explanation .try-demo{position:static;width:auto;text-align:left;margin-top:48px}
.reveal #test-explanation .try-demo figcaption span,.reveal #test-explanation .try-demo figcaption strong{display:inline;font-size:30px;font-weight:600;letter-spacing:-.02em;color:var(--lime)}
.reveal #questions .closing-grid{display:block}
.reveal #questions .closing-grid h2{max-width:1120px;font-size:76px}
.reveal #questions .closing-contacts{gap:100px;margin-top:45px}
.reveal #questions .closing-contacts p{font-size:26px}
.reveal #questions .resources-link{font-size:31px}

/* Character control as a short application demo, after the website helper. */
.avatar-modern-stage{display:grid;grid-template-columns:480px 1fr;gap:65px;align-items:center}
.stage.avatar-modern-stage video,.stage.avatar-modern-stage .print-poster{width:480px;height:480px;max-height:480px;align-self:center;object-fit:contain}
.reveal .avatar-modern-stage blockquote{font-size:48px;line-height:1.2;letter-spacing:-.03em;margin:0 0 42px;font-weight:600}
.reveal .avatar-modern-stage .visible-demo-url{font-size:30px;white-space:nowrap}
@media print{.avatar-modern-stage .print-poster{display:block!important}}

/* Chemistry follows questions about knowledge, reaction pathways and shape. */
.chemistry-outlook .outlook-stage{flex-direction:column;align-items:flex-start;justify-content:center;gap:65px}
.reveal .outlook-question{font-size:70px;font-weight:650;line-height:1.12;letter-spacing:-.03em}
.outlook-flow{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%;font-size:30px;color:var(--paper)}
.outlook-flow b{color:var(--lime);font-weight:400}
.reveal .chem-visible-link{position:absolute;bottom:27px;left:64px;font-size:26px;color:var(--purple);font-weight:600}
.helper-tree-stage{display:grid;grid-template-columns:760px 1fr;gap:36px}
.stage.helper-tree-stage video,.stage.helper-tree-stage .print-poster{width:760px;height:492px;max-height:492px;align-self:center;object-fit:contain}
.reveal .helper-tree-stage p{font-size:44px;line-height:1.2;font-weight:600;margin-bottom:44px}
.reveal .helper-tree-stage a{font-size:25px;color:var(--lime);white-space:nowrap}

/* One editable training demonstration, revealed in two steps. */
.doom-teaching-stage{height:415px;display:grid;grid-template-columns:500px 62px 500px;gap:32px;align-items:center;justify-content:center;padding-top:20px}
.doom-teaching-stage figure{width:500px;text-align:center}
.doom-teaching-stage figure>img,.doom-image-stack{width:500px;height:375px;object-fit:contain}
.doom-image-stack{position:relative}
.doom-image-stack img{position:absolute;inset:0;width:500px;height:375px;object-fit:contain}
.doom-teaching-stage figcaption{font-size:28px;font-weight:600;margin-top:14px;height:38px;position:relative;text-align:center}
.doom-edited-desktop figcaption span{position:absolute;inset:0}
.doom-splice-arrow{font-size:59px;color:var(--purple);text-align:center}
.reveal .doom-never-installed{font-size:34px;font-weight:650;color:var(--purple);margin-top:47px;text-align:center}
@media print{.doom-image-stack .fade-out,.doom-edited-desktop figcaption .fade-out{display:none!important}}

/* WildChat: collection origin, historical reach and a self-contained search. */
.wildchat-origin .stage{height:450px}
.wildchat-origin-stage{display:grid;grid-template-columns:620px 1fr;gap:48px;align-items:center}
.wildchat-origin-stage>img{width:620px;height:350px;object-fit:contain}
.reveal .wc-origin-lead{font-size:51px;line-height:1.15;font-weight:700;color:var(--purple);margin-bottom:30px}
.reveal .wc-origin-consent{font-size:34px;line-height:1.3}
.reveal .wc-origin-url{font-size:35px;line-height:1.2;white-space:nowrap;text-align:center;color:var(--purple)}
.wildchat-global .stage{height:440px}
.wildchat-global .stage video,.wildchat-global .stage .print-poster{height:435px;align-self:center}
.reveal .wc-global-scale{font-size:35px;line-height:1.2;text-align:center;color:var(--muted);margin-top:12px}
.wc-global-scale strong{color:var(--purple)}
.wildchat-browse .stage{height:440px}
.wc-browse-stage{display:grid;grid-template-columns:470px 570px;gap:75px;align-items:center}
.wc-browse-stage figure{width:100%}
.wc-browse-stage figcaption{font-size:28px;font-weight:600;color:var(--muted);margin-bottom:24px}
.wc-browse-stage .wc-filter-example img{width:470px;height:auto}
.wc-browse-stage .wc-result-example img{width:570px;height:auto;image-rendering:auto}
.reveal .wc-open-data{text-align:center;font-size:28px;line-height:1.4}
.reveal .wc-open-data p{font-size:29px;margin-bottom:18px;color:var(--muted)}
.reveal .wc-open-data a{font-size:29px;white-space:nowrap}

.gta-context-stage{display:grid;grid-template-columns:710px 1fr;gap:42px}
.gta-context-stage img{width:710px;height:493px;object-fit:contain}
.stage.gta-context-stage video{width:710px;height:493px;max-height:493px;object-fit:contain}
.reveal .gta-context-stage p{font-size:27px;color:#bec6d5;margin-bottom:28px}
.reveal .gta-context-stage strong{font-size:41px;line-height:1.2;font-weight:650;color:var(--lime)}
.gta-skills .stage{height:500px}
.gta-skills .stage video,.gta-skills .stage .print-poster{height:500px;max-height:500px;width:100%;align-self:center}