:root {
  --paper: #fbfcfd;
  --paper-deep: #f1f5f8;
  --ink: #17242d;
  --muted: #62717c;
  --line: #cfdae1;
  --signal: #147d72;
  --signal-pale: #dfeeea;
  --reward: #d97724;
  --reward-pale: #f7e8d8;
  --blue: #2f5d8c;
  --purple: #6f64a2;
  --display: 'Geist', Arial, sans-serif;
  --sans: 'Geist', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', monospace;
  --page: min(1180px, calc(100vw - 48px));
  --ease: cubic-bezier(.2, .7, .2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); overflow-x: hidden; }
body::before { content: ''; position: fixed; inset: 0; z-index: -1; background: linear-gradient(90deg, transparent calc(50% - 590px), rgba(47,93,140,.04) calc(50% - 590px), rgba(47,93,140,.04) calc(50% - 589px), transparent calc(50% - 589px), transparent calc(50% + 589px), rgba(47,93,140,.04) calc(50% + 589px), rgba(47,93,140,.04) calc(50% + 590px), transparent calc(50% + 590px)); pointer-events: none; }
a { color: inherit; }
img, video, svg { display: block; max-width: 100%; }
h1, h2, h3, h4, p, figure, dl, dd { margin: 0; }
p { color: var(--muted); font-size: 18px; line-height: 1.65; }
code { font-family: var(--mono); font-size: .86em; }

.reading-progress { position: fixed; top: 0; right: 0; left: 0; z-index: 100; height: 3px; background: rgba(205,214,209,.5); }
.reading-progress i { display: block; width: 100%; height: 100%; background: linear-gradient(90deg, var(--signal), var(--reward)); transform: scaleX(0); transform-origin: left; will-change: transform; }

.site-nav { position: absolute; top: 3px; right: 0; left: 0; z-index: 20; width: var(--page); height: 78px; margin: auto; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 30px; border-bottom: 1px solid rgba(205,214,209,.75); }
.wordmark { display: inline-flex; align-items: center; gap: 10px; width: max-content; font: 600 13px var(--mono); text-decoration: none; letter-spacing: .02em; }
.wordmark svg { width: 28px; height: 28px; fill: var(--reward); stroke: var(--ink); stroke-width: 1.5; }
.wordmark span span { color: var(--reward); }
.site-nav nav { display: flex; gap: 28px; }
.site-nav nav a, .presentation-link { color: var(--muted); font-size: 13px; font-weight: 500; text-decoration: none; }
.site-nav nav a:hover, .presentation-link:hover { color: var(--ink); }
.presentation-link { justify-self: end; }
.presentation-link span { color: var(--reward); margin-left: 4px; }

.hero { position: relative; width: var(--page); min-height: 900px; margin: auto; padding: 150px 0 70px; display: grid; grid-template-columns: 1.03fr .97fr; grid-template-rows: 1fr auto; column-gap: clamp(50px, 7vw, 110px); align-items: center; overflow: clip; }
.hero::after { content: ''; position: absolute; right: -18vw; top: 10%; width: 650px; height: 650px; z-index: -1; border-radius: 50%; background: radial-gradient(circle, rgba(24,134,120,.1), rgba(49,106,152,.025) 48%, transparent 68%); }
.eyebrow, .chapter-number { color: var(--signal); font: 600 11px var(--mono); letter-spacing: .16em; text-transform: uppercase; }
.hero h1 { max-width: 740px; margin-top: 26px; font: 400 clamp(64px, 6vw, 96px)/.92 var(--display); letter-spacing: -.045em; }
.hero h1 em { color: var(--blue); font-weight: 400; }
.hero-lede { max-width: 580px; margin-top: 32px; color: #43515a; font-size: 21px; line-height: 1.55; }
.byline { display: grid; gap: 5px; margin-top: 42px; font-size: 14px; line-height: 1.4; }
.byline strong { color: var(--ink); font: 500 22px var(--display); }
.byline span { color: var(--muted); }

.hero-system { position: relative; height: 570px; }
.hero-node { position: absolute; z-index: 2; }
.hero-node > span, .reward-loop span { display: block; margin-bottom: 10px; color: var(--muted); font: 600 10px var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.stimulus-node { left: 0; top: 208px; }
.stimulus-node img { width: 138px; height: 138px; border-radius: 50%; object-fit: cover; box-shadow: 0 18px 40px rgba(20,32,39,.15); }
.model-node { right: 5px; top: 32px; width: 285px; }
.mini-code { padding: 25px 24px; border: 1px solid #bfcac5; border-radius: 6px; background: rgba(255,255,255,.66); box-shadow: 0 16px 50px rgba(20,32,39,.08); color: #3f4c54; font: 14px/1.8 var(--mono); }
.mini-code b { color: var(--purple); font-weight: 600; }
.brain-node { right: 0; bottom: 4px; width: 340px; }
.brain-node img { width: 100%; mix-blend-mode: multiply; }
.signal { position: absolute; z-index: 1; overflow: hidden; }
.signal::before { content: ''; position: absolute; inset: 0; border: 1.5px dashed rgba(238,150,56,.7); }
.signal i { position: absolute; width: 9px; height: 9px; border-radius: 50%; background: var(--reward); box-shadow: 0 0 0 6px rgba(238,150,56,.14); animation: pulse 2.2s ease-in-out infinite; }
.signal-a { left: 120px; top: 125px; width: 180px; height: 150px; }
.signal-a::before { border-bottom: 0; border-left: 0; border-radius: 0 80px 0 0; }
.signal-a i { right: -2px; top: -2px; }
.signal-b { right: 125px; top: 178px; width: 150px; height: 155px; }
.signal-b::before { border-top: 0; border-left: 0; border-radius: 0 0 80px; }
.signal-b i { right: -2px; bottom: -2px; animation-delay: .7s; }
.reward-loop { position: absolute; left: 22px; bottom: 30px; width: 190px; padding-top: 12px; border-top: 2px solid var(--reward); }
.reward-loop span { color: var(--reward); }
.reward-loop i { position: absolute; top: -6px; right: -3px; width: 10px; height: 10px; border-radius: 50%; background: var(--reward); }
@keyframes pulse { 50% { transform: scale(1.45); box-shadow: 0 0 0 11px rgba(238,150,56,.04); } }

.hero-facts { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 20px; padding: 26px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.hero-facts div { padding-left: 28px; border-left: 1px solid var(--line); }
.hero-facts div:first-child { padding-left: 0; border-left: 0; }
.hero-facts dt { font: 500 clamp(22px, 2.4vw, 30px)/1 var(--display); letter-spacing: -.02em; }
.hero-facts dd { margin-top: 3px; color: var(--muted); font: 500 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; }

.chapter { width: var(--page); margin: auto; padding: 96px 0; }
.chapter-heading, .result-heading, .generalization-heading { display: grid; grid-template-columns: 170px minmax(0, 1.05fr) minmax(280px, .7fr); gap: 34px; align-items: start; }
.chapter-heading h2, .result-heading h2, .generalization-heading h2, .scale-heading h2 { max-width: 740px; font: 400 clamp(48px, 5vw, 72px)/.98 var(--display); letter-spacing: -.035em; }
.chapter-heading > p:last-child, .result-heading > p:last-child, .generalization-heading > p:last-child { padding-top: 10px; }

.function-flow { position: relative; margin-top: 72px; padding: 58px 44px 86px; display: grid; grid-template-columns: 1.2fr auto .9fr auto .9fr auto 1.15fr; gap: 22px; align-items: center; border-radius: 14px; background: #fff; box-shadow: 0 22px 70px rgba(20,32,39,.07); }
.flow-item { display: grid; justify-items: center; gap: 8px; }
.flow-item strong { font: italic 500 38px var(--display); }
.flow-item span { color: var(--muted); font: 500 9px var(--mono); letter-spacing: .1em; text-transform: uppercase; text-align: center; }
.flow-images > div { display: grid; grid-template-columns: repeat(2, 60px); gap: 5px; }
.flow-images img { width: 60px; height: 48px; object-fit: cover; }
.flow-function { height: 150px; align-content: center; border: 2px solid var(--reward); border-radius: 50%; background: var(--reward-pale); }
.flow-function strong { color: var(--reward); font-size: 44px; }
.flow-matrix i { width: 96px; height: 96px; background: repeating-linear-gradient(90deg, rgba(24,134,120,.75) 0 6px, transparent 6px 11px), repeating-linear-gradient(0deg, rgba(24,134,120,.25) 0 6px, transparent 6px 11px); }
.flow-brain img { width: 170px; height: 105px; object-fit: cover; object-position: left; mix-blend-mode: multiply; }
.flow-arrow { color: #aeb8b3; font-size: 30px; font-weight: 400; }
.function-flow figcaption { position: absolute; right: 44px; bottom: 30px; left: 44px; color: var(--muted); font-size: 13px; text-align: center; }

.datasets { margin-top: 72px; display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 18px; }
.dataset-intro { padding: 34px 44px 34px 0; }
.dataset-intro h3, .baseline h3, .benchmark h3, .gradient-copy h3, .species h3 { margin-top: 17px; font: 400 36px/1.08 var(--display); letter-spacing: -.025em; }
.datasets article { min-height: 330px; padding: 34px; border: 1px solid var(--line); border-radius: 10px; background: rgba(255,255,255,.45); }
.dataset-tag { color: var(--signal); font: 600 10px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.dataset-tag.macaque { color: var(--purple); }
.datasets h4 { margin-top: 22px; font: 500 29px var(--display); }
.datasets article p { margin-top: 18px; font-size: 15px; }
.datasets dl { display: flex; gap: 34px; margin-top: 38px; padding-top: 22px; border-top: 1px solid var(--line); }
.datasets dt { color: var(--signal); font: 500 30px var(--display); }
.datasets article:last-child dt { color: var(--purple); }
.datasets dd { color: var(--muted); font: 500 9px var(--mono); text-transform: uppercase; }

.baseline { margin-top: 72px; padding: 58px 0; display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); }
.baseline-copy > p:not(.eyebrow) { margin-top: 22px; font-size: 16px; }
.baseline-copy .metric-note { font-size: 11px !important; font-family: var(--mono); }
.baseline-charts { display: grid; gap: 32px; }
.mini-chart h4 { margin-bottom: 15px; font: 600 15px var(--display); }
.mini-chart > div { display: grid; grid-template-columns: 128px 1fr 42px; gap: 12px; align-items: center; min-height: 36px; }
.mini-chart span { color: var(--muted); font-size: 11px; }
.mini-chart i { height: 10px; width: var(--v); background: var(--signal); }
.mini-chart b { font: 500 15px var(--mono); }
.mini-chart.purple i { background: var(--purple); }

.method { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px 110px; }
.method-copy { align-self: start; position: sticky; top: 54px; }
.method-copy h2 { margin-top: 22px; font: 400 clamp(48px, 4.6vw, 70px)/.98 var(--display); letter-spacing: -.035em; }
.method-copy p:not(.chapter-number) { margin-top: 26px; }
.loop-steps { margin: 0; padding: 0; list-style: none; }
.loop-steps li { display: grid; grid-template-columns: 56px 1fr; gap: 22px; padding: 29px 0; border-bottom: 1px solid var(--line); }
.loop-steps li > span { color: var(--reward); font: 500 13px var(--mono); }
.loop-steps h3 { font: 500 27px var(--display); }
.loop-steps p { margin-top: 6px; font-size: 15px; }
.code-evolution { grid-column: 1 / -1; display: grid; grid-template-columns: 1.4fr .6fr; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: #fff; box-shadow: 0 18px 60px rgba(20,32,39,.07); }
.code-window header { height: 56px; padding: 0 24px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--line); background: #eef1ed; }
.code-window header > span { width: 8px; height: 8px; border-radius: 50%; background: var(--reward); }
.code-window header strong { font: 600 12px var(--mono); }
.code-window header small { margin-left: auto; color: var(--muted); font: 10px var(--mono); }
.code-window pre { margin: 0; padding: 44px 48px 50px; color: #435159; font: 15px/2 var(--mono); overflow-x: auto; }
.code-window em { color: var(--purple); font-style: normal; font-weight: 600; }
.integrity { padding: 40px; border-left: 1px solid var(--line); background: var(--paper-deep); }
.integrity > p { color: var(--signal); font: 600 10px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.integrity > strong { display: block; margin-top: 13px; font: 500 27px var(--display); }
.integrity ul { margin: 28px 0; padding: 0; list-style: none; }
.integrity li { padding: 8px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.integrity > span { color: var(--signal); font: 600 11px var(--mono); text-transform: uppercase; }
.search-replay { grid-column: 1 / -1; position: relative; margin-top: -30px; overflow: hidden; border: 1px solid var(--line); background: #e9eef1; }
.search-replay video { width: 100%; aspect-ratio: 16 / 7; object-fit: cover; opacity: .92; }
.search-replay figcaption { padding: 18px 24px; display: flex; justify-content: space-between; gap: 30px; border-top: 1px solid var(--line); background: #fff; }
.search-replay figcaption strong { font: 500 17px var(--display); }
.search-replay figcaption span { color: var(--muted); font-size: 11px; }

.search-scale { padding: 92px max(24px, calc((100vw - 1180px)/2)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper-deep); }
.scale-heading { display: grid; grid-template-columns: 170px 1.1fr .8fr; gap: 34px; }
.scale-heading .chapter-number { color: var(--signal); }
.islands { margin-top: 64px; display: grid; justify-items: center; }
.conductor, .evaluator { min-width: 300px; padding: 18px 26px; display: grid; justify-items: center; gap: 4px; border: 1px solid var(--line); background: #fff; }
.conductor span, .evaluator b { font: 500 17px var(--display); }
.conductor small, .evaluator small, .evaluator span { color: var(--muted); font: 9px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.island-row { position: relative; width: min(760px, 100%); margin: 42px 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 22px; }
.island-row::before, .island-row::after { content: ''; position: absolute; right: 5%; left: 5%; height: 1px; background: var(--line); }
.island-row::before { top: -22px; }.island-row::after { bottom: -22px; }
.island-row i { position: relative; z-index: 1; aspect-ratio: 1; display: grid; place-items: center; border: 1px solid color-mix(in srgb, var(--reward) calc(28% + var(--i) * 4%), var(--line)); border-radius: 50%; background: var(--paper-deep); font-style: normal; }
.island-row b { color: var(--ink); font: 500 10px var(--mono); }
.search-principles { margin-top: 64px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); }
.search-principles article { min-height: 230px; padding: 34px; border-left: 1px solid var(--line); background: rgba(255,255,255,.5); }
.search-principles article:first-child { border-left: 0; }
.search-principles span { color: var(--signal); font: 600 10px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.search-principles h3 { margin-top: 38px; font: 500 24px/1.12 var(--display); letter-spacing: -.02em; }
.search-principles p { margin-top: 13px; font-size: 13px; }

.result-heading { margin-bottom: 72px; }
.benchmark { padding: 58px 0; display: grid; grid-template-columns: .7fr 1.3fr; gap: 60px; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); }
.benchmark-copy > p:not(.eyebrow) { margin-top: 20px; font-size: 16px; }
.figure-key { margin-top: 34px; display: grid; gap: 10px; color: var(--muted); font-size: 11px; }
.figure-key span { display: flex; align-items: center; gap: 9px; }
.figure-key i { width: 25px; height: 9px; display: inline-block; background: var(--blue); }
.figure-key .searched-key { border: 1px solid var(--reward); background: repeating-linear-gradient(135deg, transparent 0 3px, var(--reward) 3px 5px); }
.figure-key .training-key { border: 1px solid var(--blue); background: repeating-linear-gradient(135deg, transparent 0 3px, var(--blue) 3px 5px); box-shadow: inset -12px 0 var(--blue); }
.nsd-results { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-items: start; }
.nsd-results figure { margin: 0; min-width: 0; }
.nsd-results img { display: block; width: 100%; }
.nsd-results figcaption { padding-top: 10px; border-top: 1px solid var(--line); color: var(--muted); font: 500 10px var(--mono); text-align: center; text-transform: uppercase; }
.mechanism { margin-top: 24px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--line); }
.mechanism article { min-height: 230px; padding: 34px; background: var(--paper); }
.mechanism article > span { color: var(--reward); font: 500 11px var(--mono); }
.mechanism h3 { margin-top: 42px; font: 500 25px var(--display); }
.mechanism p { margin-top: 12px; font-size: 13px; }
.cortical-gradient { margin-top: 72px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 90px; align-items: center; }
.brain-visual { position: relative; min-height: 480px; display: grid; align-content: center; border-radius: 50%; background: radial-gradient(circle, rgba(49,106,152,.13), transparent 66%); }
.brain-visual img { width: 100%; mix-blend-mode: multiply; }
.brain-visual span { position: absolute; right: 0; bottom: 36px; color: var(--muted); font: 9px var(--mono); }
.gradient-copy > p:not(.eyebrow) { margin-top: 20px; font-size: 16px; }
.roi-bars { margin-top: 34px; display: grid; gap: 9px; }
.roi-bars > div { display: grid; grid-template-columns: 42px 1fr 46px; gap: 12px; align-items: center; }
.roi-bars span { font: 500 11px var(--mono); }
.roi-bars i { width: var(--v); height: 7px; background: linear-gradient(90deg, var(--blue), var(--signal)); }
.roi-bars b { color: var(--muted); font: 500 11px var(--mono); }

.generalization { padding-top: 40px; }
.species { margin-top: 80px; display: grid; grid-template-columns: 1.15fr repeat(3, 1fr); border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); }
.species-copy { padding: 42px 40px 42px 0; }
.species-copy > p:last-child { margin-top: 18px; font-size: 15px; }
.species article { padding: 42px 28px; border-left: 1px solid var(--line); }
.dataset-result header > span { color: var(--muted); font: 500 9px var(--mono); text-transform: uppercase; }
.species h4 { margin-top: 10px; font: 600 19px var(--display); }
.result-table { margin-top: 30px; display: grid; grid-template-columns: 1fr auto auto; gap: 0 18px; align-items: baseline; }
.result-table > * { padding: 9px 0; border-bottom: 1px solid var(--line); }
.result-table b { color: var(--muted); font: 500 9px var(--mono); text-transform: uppercase; }
.result-table span { font-size: 12px; }
.result-table strong { color: var(--signal); font: 600 14px var(--mono); text-align: right; }
.dataset-result > p { margin-top: 20px; font-size: 11px; line-height: 1.5; }

.closing { width: var(--page); margin: 0 auto 90px; padding: 90px 0; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); text-align: center; }
.closing h2 { max-width: 900px; margin: 24px auto 0; font: 400 clamp(48px, 5vw, 74px)/.98 var(--display); letter-spacing: -.035em; }
.closing > p:not(.eyebrow) { max-width: 760px; margin: 30px auto 0; font-size: 17px; }
.closing-links { display: flex; justify-content: center; gap: 14px; margin-top: 46px; }
.closing-links a { padding: 13px 20px; border: 1px solid var(--line); color: var(--ink); font-size: 12px; text-decoration: none; }
.closing-links a:first-child { border-color: var(--reward); color: var(--reward); font-weight: 600; }
.site-footer { width: var(--page); min-height: 100px; margin: auto; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.site-footer span:nth-child(2) { justify-self: center; }.site-footer a { justify-self: end; text-decoration: none; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 900px) {
  :root { --page: min(100% - 32px, 680px); }
  p { font-size: 16px; }
  .site-nav { grid-template-columns: 1fr auto; height: 66px; }
  .site-nav nav { display: none; }
  .hero { min-height: auto; padding: 120px 0 60px; grid-template-columns: 1fr; }
  .hero h1 { font-size: clamp(58px, 14vw, 82px); }
  .hero-system { height: 500px; margin-top: 40px; }
  .hero-facts { grid-template-columns: repeat(2, 1fr); row-gap: 20px; }
  .hero-facts div:nth-child(3) { padding-left: 0; border-left: 0; }
  .chapter { padding: 64px 0; }
  .chapter-heading, .result-heading, .generalization-heading, .scale-heading { grid-template-columns: 1fr; gap: 18px; }
  .chapter-heading > p:last-child, .result-heading > p:last-child, .generalization-heading > p:last-child { max-width: 620px; }
  .function-flow { padding: 42px 24px 76px; grid-template-columns: 1fr auto 1fr; row-gap: 35px; }
  .function-flow .flow-arrow:nth-of-type(2) { display: none; }
  .flow-matrix, .flow-brain { grid-row: 2; }
  .flow-matrix { grid-column: 1; }.flow-brain { grid-column: 3; }
  .datasets { grid-template-columns: 1fr 1fr; }
  .species { grid-template-columns: 1fr 1fr; }
  .dataset-intro, .species-copy { grid-column: 1 / -1; }
  .baseline, .benchmark { padding: 44px; grid-template-columns: 1fr; gap: 50px; }
  .method { grid-template-columns: 1fr; gap: 50px; }
  .method-copy { position: static; }
  .code-evolution { grid-column: auto; grid-template-columns: 1fr; }
  .integrity { border-top: 1px solid var(--line); border-left: 0; }
  .search-replay { grid-column: auto; margin-top: 0; }
  .search-scale { padding: 64px 24px; }
  .island-row { grid-template-columns: repeat(5, 1fr); }
  .search-principles { grid-template-columns: 1fr; }
  .search-principles article { min-height: 0; border-top: 1px solid var(--line); border-left: 0; }
  .search-principles article:first-child { border-top: 0; }
  .mechanism { grid-template-columns: repeat(2, 1fr); }
  .species article:first-of-type { border-left: 0; }
  .mechanism article:last-child { grid-column: 1 / -1; }
  .cortical-gradient { grid-template-columns: 1fr; gap: 40px; }
  .brain-visual { min-height: 380px; }
  .closing { padding: 70px 40px; }
  .site-footer { grid-template-columns: 1fr auto; }
  .site-footer span:nth-child(2) { display: none; }
}

@media (max-width: 560px) {
  :root { --page: calc(100% - 28px); }
  .wordmark { font-size: 11px; }
  .presentation-link { font-size: 11px; }
  .hero { padding-top: 106px; }
  .hero h1 { font-size: 56px; line-height: .95; }
  .hero-lede { font-size: 18px; }
  .hero-system { height: 420px; overflow: hidden; transform: scale(.9); transform-origin: top center; margin-bottom: -35px; }
  .model-node { width: 240px; }.brain-node { width: 270px; }.stimulus-node img { width: 105px; height: 105px; }
  .signal-a { left: 80px; width: 135px; }.signal-b { right: 90px; width: 110px; }
  .hero-facts dt { font-size: 23px; }
  .chapter { padding: 56px 0; }
  .chapter-heading h2, .result-heading h2, .generalization-heading h2, .scale-heading h2, .method-copy h2 { font-size: 44px; }
  .function-flow { display: flex; flex-wrap: wrap; justify-content: center; gap: 22px 12px; }
  .function-flow .flow-item { width: 40%; }.function-flow .flow-arrow { width: 8%; text-align: center; }
  .function-flow .flow-matrix, .function-flow .flow-brain { width: 45%; }
  .function-flow figcaption { right: 20px; left: 20px; }
  .datasets, .species, .mechanism { grid-template-columns: 1fr; }
  .dataset-intro { padding-right: 0; }
  .datasets { margin-top: 50px; }
  .datasets article { min-height: 0; padding: 28px 24px; }
  .datasets dl { margin-top: 26px; }
  .baseline, .benchmark { padding: 32px 24px; }
  .mini-chart > div { grid-template-columns: 105px 1fr 36px; }
  .code-window pre { padding: 30px 22px; font-size: 11px; }
  .search-replay video { aspect-ratio: 1.2; }
  .search-replay figcaption { flex-direction: column; gap: 5px; }
  .island-row { grid-template-columns: repeat(5, 1fr); gap: 8px; }
  .search-principles { margin-top: 50px; }
  .search-principles article { padding: 26px 24px; }
  .search-principles h3 { margin-top: 22px; }
  .nsd-results { grid-template-columns: 1fr; }
  .mechanism article:last-child { grid-column: auto; }
  .mechanism article { min-height: 170px; padding: 26px 24px; }
  .mechanism h3 { margin-top: 24px; }
  .brain-visual { min-height: 280px; }
  .brain-visual span { bottom: 5px; }
  .species article { padding: 28px 24px; border-left: 0; border-top: 1px solid var(--line); }
  .closing { width: calc(100% - 28px); margin-bottom: 40px; padding: 70px 0; }
  .closing h2 { font-size: 45px; }
  .closing-links { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}