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html,body { margin:0; background:var(--paper); color:var(--ink); }
.reveal { font-family:Arial,Helvetica,sans-serif; font-size:40px; color:var(--ink); }
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.course-header>span:first-child { color:var(--ink); font-weight:700; }
.divider { padding:0 10px; color:#a7ad9f; }
.reveal .slides { text-align:left; }
.reveal .slides section.slide { height:100%; padding:70px 32px 40px; box-sizing:border-box; flex-direction:column; }
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.reveal h1 { font-size:128px; font-weight:600; line-height:1.05; letter-spacing:-.055em; }
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.accent { color:var(--accent)!important; }
.rust { color:var(--rust)!important; }
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.reveal figure { margin:0; }
.reveal img { border:0; box-shadow:none; margin:0; max-width:100%; max-height:100%; }
.reveal blockquote { margin:0; padding:0; border:0; box-shadow:none; background:none; width:auto; font-size:48px; font-style:normal; font-weight:400; line-height:1.28; letter-spacing:-.025em; }
.attribution { display:flex; flex-direction:column; gap:10px; margin-top:35px; font-size:24px; }
.attribution span { font-size:20px; color:var(--muted); }
.reveal .takeaway { margin-top:auto; padding-top:24px; font-size:30px; line-height:1.3; }
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.reveal .notes { display:none; }
.reveal ul,.reveal ol { margin:0; padding:0; }
.reveal li { margin:0; }
/* Opening and definition */
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.reveal .opening-subtitle { margin-top:25px; font-size:60px; line-height:1.15; letter-spacing:-.025em; }
.opening-question { margin-top:auto; padding-top:30px; font-size:40px; }
.reveal .poll-line { margin-top:18px; }
.reveal .definition-text { font-size:54px; line-height:1.25; margin:25px 0 65px; letter-spacing:-.025em; }
.learning-goals { display:flex; flex-direction:column; gap:23px; }
.learning-goals>div { display:flex; align-items:baseline; gap:30px; }
.list-number { color:var(--accent); font-size:23px; width:40px; }
.capability-steps { display:grid; grid-template-columns:repeat(3,1fr); gap:70px; margin-top:22px; }
.step-number { display:block; font-size:65px; color:var(--accent); margin-bottom:30px; }
.capability-steps h3 { font-size:38px; padding-bottom:18px; border-bottom:1px solid var(--line); margin-bottom:28px; }
.capability-steps p { line-height:1.6; font-size:33px; }
/* Evidence */
.evidence-image h2 { margin-bottom:22px; }
.main-chart { flex:1; min-height:0; display:flex; align-items:center; justify-content:center; }
.reveal .main-chart img { height:100%; width:100%; object-fit:contain; }
.reveal .chart-caption { font-size:25px; margin-top:18px; text-align:center; }
.evidence-image .source { text-align:center; }
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.hero-number>span { font-size:.4em; letter-spacing:-.04em; margin-left:8px; }
.imo-comparison { display:grid; grid-template-columns:1fr 1fr; gap:100px; margin-bottom:32px; }
.imo-comparison>div+div { border-left:1px solid var(--line); padding-left:100px; }
.score { font-size:135px; letter-spacing:-.055em; line-height:1; margin:16px 0; }
.score span { font-size:60px; color:var(--muted); }
.imo-comparison h3 { margin-bottom:14px; }
.imo-comparison p { font-size:26px; }
.reveal .short-quote { font-size:31px; max-width:1250px; }
.reveal .quote-credit { font-size:21px; margin-top:12px; color:var(--muted); }
#mathematical-reasoning .source { margin-top:auto; }
.research-layout { flex:1; min-height:0; display:grid; grid-template-columns:1.9fr 1fr; align-items:center; gap:45px; }
.research-layout figure { height:100%; min-height:0; display:flex; align-items:center; }
.research-layout img { display:block; object-fit:contain; width:100%; height:100%; }
.comparison-number { display:flex; align-items:baseline; gap:22px; font-size:105px; line-height:1; margin:30px 0 18px; letter-spacing:-.055em; }
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.research-result p { font-size:30px; }
.research-result .small { margin-top:20px; }
.research-result .research-lesson { margin-top:42px; font-size:29px; }
/* Human work */
.abstraction-layout { display:grid; grid-template-columns:1fr 1.1fr; gap:100px; align-items:center; flex:1; }
.abstraction-list { list-style:none; }
.abstraction-list li { display:flex; justify-content:space-between; align-items:baseline; gap:28px; padding:21px 0; border-bottom:1px solid var(--line); }
.abstraction-list strong { font-size:32px; white-space:nowrap; }
.abstraction-list span { font-size:23px; color:var(--muted); text-align:right; }
.reveal pre { margin:25px 0; padding:0; width:100%; background:none; box-shadow:none; font:29px/1.6 Menlo,Monaco,Consolas,monospace; color:var(--accent); }
.reveal pre code { padding:0; max-height:none; overflow:visible; background:none; white-space:pre; }
.complexity-equation { display:flex; align-items:baseline; justify-content:space-between; gap:16px; font-size:63px; letter-spacing:-.025em; margin:35px 0 68px; }
.complexity-equation strong { color:var(--accent); font-weight:500; }
.operator { color:var(--muted); font-size:45px; }
.complexity-layout { display:grid; grid-template-columns:1fr 1fr; gap:140px; flex:1; }
.complexity-layout .small { margin-top:10px; }
.reveal .payment-flow { margin-top:26px; padding-left:32px; font-size:27px; line-height:1.6; }
.human-work ul { list-style:none; margin-top:25px; font-size:29px; line-height:1.75; }
.marathon-comparison { display:grid; grid-template-columns:1fr 1fr; gap:100px; margin-top:25px; }
.marathon-comparison>div+div { padding-left:100px; border-left:1px solid var(--line); }
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.marathon-comparison .comparison-lead { font-size:38px; margin-bottom:38px; }
.marathon-comparison p { font-size:29px; line-height:1.65; }
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.reveal table.delegation-matrix { width:100%; border-collapse:collapse; font-size:26px; }
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.reveal .delegation-matrix td { color:var(--accent); }
.reveal .exercise-tasks ol { padding-left:35px; margin-top:23px; font-size:29px; line-height:1.75; }
/* Editable report charts */
.adoption-layout,.trust-layout { flex:1; display:grid; grid-template-columns:1fr 1.1fr; gap:100px; align-items:center; }
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.muted-fill { background:#aebca7; }
.bar-axis { display:flex; justify-content:space-between; margin:0 110px 25px 100px; font-size:18px; color:var(--muted); }
.impact-comparison { flex:1; display:grid; grid-template-columns:1fr 1fr; align-items:center; gap:100px; }
.impact-comparison>div+div { border-left:1px solid var(--line); padding-left:100px; }
.impact-comparison .hero-number { margin-bottom:35px; }
#individual-organizational-impact .small { margin-top:14px; }
.trust-layout .hero-number { margin-bottom:30px; }
.trust-layout>div>.small { margin-top:25px; }
.stacked-bar { display:flex; height:80px; width:100%; font-size:30px; }
.stacked-bar>span { display:flex; justify-content:center; align-items:center; }
.distrust { background:var(--rust); color:white; }
.trust { background:var(--accent); color:white; }
.other { background:var(--light); color:var(--ink); }
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/* Course */
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.reveal .syllabus { list-style:none; display:flex; flex-direction:column; gap:18px; }
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.closing h2 { font-size:80px; margin-top:15px; margin-bottom:50px; }
.reveal .assignment-list { padding-left:45px; font-size:38px; line-height:1.75; }
.reveal .closing-question { margin-top:auto; padding-top:35px; font-size:48px; line-height:1.35; }
/* Lecture structure and section transitions */
.reveal .section-map { list-style:none; display:flex; flex-direction:column; gap:25px; margin-top:12px; }
.section-map li { display:grid; grid-template-columns:65px 1fr 165px; gap:25px; align-items:baseline; }
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.section-map a:hover,.section-map a:focus-visible { color:var(--accent); text-decoration:underline; }
.section-map p { font-size:23px; color:var(--muted); margin-top:8px; }
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.reveal .slides section.section-divider { color:white; padding-top:65px; }
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.reveal .section-description { font-size:36px; line-height:1.35; color:#e7eee4; }
.adoption-divider-layout { flex:1; min-height:0; display:grid; grid-template-columns:1fr 520px; gap:70px; align-items:center; }
.reveal .adoption-divider h2 { max-width:850px; }
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.adoption-animation video { display:block; width:100%; max-height:100%; object-fit:contain; }
.reveal .section-duration { margin-top:auto; padding-top:24px; font-size:27px; }
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.section-break .course-header { color:#e7eee4; }
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.section-break .notes-toggle { color:#e7eee4; }
.section-break .reveal .controls { color:white; }
.section-break .reveal .slide-number { color:#e7eee4; }
/* Esc overview: one labelled row per lecture block. Scoped overrides leave
   Reveal's normal slide order, click targets, and exit cleanup intact. */
.overview-row-label { display:none; }
.reveal.overview .slides {
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}
.reveal.overview .slides>section.slide,
.reveal.overview .backgrounds>.slide-background {
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  display:flex!important;
}
.reveal.overview .overview-row-label {
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.reveal.overview .slides>section.slide { background:var(--paper); }
.reveal.overview .slides>section.section-divider { background:var(--accent); }
.reveal.overview .slides>section.present,
.reveal.overview .slides>section:hover { outline-color:var(--accent); }
body:has(.reveal.overview) .course-header { color:var(--muted); }
body:has(.reveal.overview) .course-header>span:first-child { color:var(--ink); }
body:has(.reveal.overview) .notes-toggle,
body:has(.reveal.overview) .reveal .slide-number { color:var(--muted); }
body:has(.reveal.overview) .reveal .controls { color:var(--accent); }
/* Controls and speaker notes */
.reveal .controls { color:var(--accent); }
.reveal .progress { color:var(--accent); height:3px; }
.reveal .slide-number { background:transparent; color:var(--muted); font:14px Arial,sans-serif; right:28px; bottom:24px; }
.notes-toggle { position:fixed; left:4%; bottom:22px; z-index:20; border:0; padding:4px 0; color:var(--muted); background:transparent; font:12px Arial,sans-serif; cursor:pointer; }
kbd { font:inherit; margin-left:5px; opacity:.65; }
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.speaker-notes { width:min(920px,85vw); max-height:82vh; padding:30px 38px; box-sizing:border-box; background:var(--paper); color:var(--ink); border:1px solid var(--line); border-radius:4px; font:18px/1.6 Arial,sans-serif; }
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.speaker-notes h2 { margin:0; font-size:27px; line-height:1.25; }
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.speaker-notes button:disabled { opacity:.4; cursor:default; }
.notes-navigation { display:flex; justify-content:space-between; align-items:center; border-top:1px solid var(--line); margin-top:24px; padding-top:18px; font-size:13px; color:var(--muted); }
@media(max-width:600px) { .course-header { top:16px; font-size:11px; } .notes-toggle { bottom:14px; } .speaker-notes { padding:20px; font-size:16px; } .speaker-notes h2 { font-size:21px; } }
@media print { .course-header,.notes-toggle,.speaker-notes { display:none!important; } }

/* Content-only presentation chrome and research evidence slides. */
.opening-slide:not(:has(.reveal.overview)) .reveal .controls,
.opening-slide:not(:has(.reveal.overview)) .reveal .progress,
.opening-slide:not(:has(.reveal.overview)) .reveal .slide-number { display:none!important; }
.reveal .opening { justify-content:center; }
.reveal .opening h1 { margin-top:0; }
.section-map li { grid-template-columns:65px 1fr; }
.reveal .science-intro { font-size:34px; line-height:1.4; margin-bottom:32px; }
.extremal-cards { display:grid; grid-template-columns:1fr 1fr; gap:75px; margin-bottom:30px; }
.extremal-cards>div { padding:25px 35px; background:var(--light); }
.extremal-cards h3 { font-size:30px; color:var(--accent); margin-bottom:22px; }
.exponent-bars { display:flex; align-items:flex-end; gap:18px; height:130px; border-bottom:2px solid var(--accent); }
.exponent-bars i { display:block; width:85px; background:var(--accent); }
.reveal .extremal-cards .vector { font-size:32px; margin:16px 0 9px; }
.reveal .extremal-cards p { font-size:25px; }
.reveal .science-quote { font-size:31px; line-height:1.4; margin-top:auto; }
.bound-comparison { display:grid; grid-template-columns:1fr 1.2fr; gap:70px; margin:25px 0 35px; }
.bound-comparison>div+div { padding-left:60px; border-left:1px solid var(--line); }
.bound-comparison h3 { color:var(--accent); font-size:28px; margin-bottom:38px; }
.reveal .bound-formula { font-size:66px; margin-bottom:30px; white-space:nowrap; }
.bound-formula sup { font-size:.55em; }
.bound-comparison p { font-size:27px; }
.verification-chain { display:flex; align-items:center; gap:26px; padding:26px 0; border-top:1px solid var(--line); border-bottom:1px solid var(--line); font-size:27px; line-height:1.4; }
.verification-chain b { color:var(--accent); }
.reveal .science-caveat { margin-top:auto; padding-top:25px; font-size:22px; }
.reveal .secondary-source { margin-top:5px; }

.reveal .capability-steps .capability-summary { font-size:25px; line-height:1.4; color:var(--accent); margin-top:32px; padding-top:20px; border-top:1px solid var(--line); }

/* Shared exploration and overview of mathematics milestones. */
.together-layout { display:grid; grid-template-columns:1fr 1fr; gap:80px; flex:1; align-items:center; }
.reveal .together-lead { font-size:42px; line-height:1.4; margin-bottom:45px; }
.together-layout ul { padding-left:32px; font-size:30px; line-height:1.8; }
.participation { margin-top:45px; padding-top:25px; border-top:1px solid var(--line); }
.participation h3 { color:var(--accent); font-size:25px; margin-bottom:12px; }
.reveal .participation p { font-size:39px; }
.together-layout figure { display:flex; justify-content:center; }
.reveal .together-layout img { width:100%; max-height:520px; object-fit:contain; }
.pichai-portrait { height:590px; width:100%; }
.reveal .pichai-portrait img { width:100%; height:100%; object-fit:cover; object-position:center 30%; }
.math-milestones { display:flex; flex-direction:column; flex:1; justify-content:space-evenly; }
.math-milestones>div { display:grid; grid-template-columns:150px 1fr; gap:50px; padding:30px 0; border-top:1px solid var(--line); align-items:start; }
.milestone-year { color:var(--accent); font-size:42px; line-height:1.2; }
.math-milestones h3 { font-size:37px; margin-bottom:16px; }
.reveal .math-milestones p { font-size:30px; line-height:1.5; }

.math-columns { display:grid; grid-template-columns:1fr 1.1fr; gap:75px; flex:1; }
.math-columns>div+div { border-left:1px solid var(--line); padding-left:55px; }
.reveal .math-column-title { color:var(--accent); font-size:30px; margin-bottom:25px; }
.math-entry { padding:22px 0; border-top:1px solid var(--line); }
.math-entry>span { display:block; color:var(--muted); font-size:21px; margin-bottom:12px; }
.reveal .math-entry h3 { font-size:30px; margin-bottom:13px; }
.reveal .math-entry p { font-size:25px; line-height:1.5; }

/* Breslav's complexity argument, adapted to engineering and mathematics. */
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.reveal .research-judgment { margin-top:70px; font-size:34px; line-height:1.5; }

/* October 2026 update: compact argument, paired GIFs, and survey charts. */
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.together-gifs figure { width:355px; }
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.survey-slide { --survey-orange:#dc5a16; --survey-purple:#7151c6; --survey-blue:#286fc3; --survey-teal:#187e75; }
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.survey-axis { display:flex; justify-content:space-between; font-size:18px; color:var(--muted); margin:12px 133px 0 508px; }
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.survey-trust-comparison { flex:1; display:grid; grid-template-columns:1fr 1fr; gap:95px; align-items:center; }
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.reveal.overview .slides>section.survey-trust { background:#e5f3ed; }
.reveal.overview .slides>section.survey-checking { background:#e8f0fb; }

/* Syllabus and the closing discussion. */
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.reveal .catalogue-manuscripts p { font-size:38px; margin-top:25px; }
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.discussion-layout { display:grid; grid-template-columns:1.85fr 1fr; gap:85px; flex:1; align-items:center; }
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.discussion-form { display:flex; flex-direction:column; align-items:center; gap:25px; }
.discussion-form>a { display:block; width:430px; max-width:100%; }
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.discussion-form figcaption { font-size:27px; text-align:center; }
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