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var(--gutter);pointer-events:none;align-items:center;scroll-margin-top:0;display:flex;position:relative}.chapter-copy{pointer-events:auto;width:44%;max-width:555px}.chapter-copy h1{letter-spacing:-.035em;font-size:clamp(38px,4.25vw,64px);line-height:1}.chapter-copy h2{letter-spacing:-.03em;font-size:clamp(34px,3.65vw,54px);line-height:1.06}.chapter-copy em{color:var(--orange-deep);font-style:normal}.chapter-subtitle{font-family:var(--font-display);letter-spacing:-.025em;color:var(--sage-deep);margin-top:22px;font-size:clamp(22px,2.1vw,30px);line-height:1.18}.chapter-body{color:var(--text-soft);text-wrap:pretty;margin-top:23px;font-size:17px;line-height:1.65}.chapter-body strong{color:var(--ink);font-weight:600}.chapter-statement,.human-work{font-family:var(--font-display);letter-spacing:-.02em;margin-top:26px;font-size:clamp(21px,1.7vw,25px);line-height:1.3}.chapter-statement 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span{background:var(--orange-deep)}.scene-controls:not([hidden]){display:flex}.motion-toggle{min-height:44px;color:var(--text-soft);cursor:pointer;background:0 0;border:0;align-items:center;gap:9px;padding:0 14px;font-size:12px;display:flex}.motion-toggle:hover{color:var(--ink)}.brain-credits{padding:35px var(--gutter);background:var(--cream);color:var(--text-label);font-size:11px;position:relative}.brain-credits a{text-underline-offset:3px;text-decoration:underline}@media (width<=1050px){.chapter-copy{width:47%}.brain-viewport{width:53%}.chapter-body{font-size:16px}}@media (width<=700px){.brain-lab{--brain-controls-h:72px}.lab-stage{z-index:3}.lab-stage:before{content:"";background:linear-gradient(var(--cream) 92%, transparent);height:40svh;position:absolute;inset:0 0 auto}.brain-viewport{width:100%;height:34svh;top:5svh;right:0}.story-chapter{align-items:flex-start;padding:42svh 22px 105px}.chapter-copy{width:100%;max-width:550px}.chapter-copy h1{font-size:clamp(36px,9vw,50px)}.chapter-copy h2{font-size:clamp(34px,8.5vw,46px)}.chapter-subtitle{margin-top:18px;font-size:22px}.chapter-body{margin-top:20px;font-size:16px;line-height:1.6}.chapter-statement,.human-work{margin-top:23px;font-size:21px}.story-enter,.chapter-link{margin-top:20px}.chapter-details{font-size:15px}.lab-controls{gap:8px;padding:12px 18px 16px}.chapter-nav{gap:0}.chapter-nav a{width:29px}.chapter-nav a span{width:19px}.motion-toggle{padding:0 8px}.brain-credits{padding:30px 22px;font-size:10px}}@media (width<=700px) and (height<=550px){.lab-stage{height:300px;margin-bottom:0;position:relative;top:0}.lab-stage:before{display:none}.brain-viewport{height:100%;top:20px}.story-chapter{min-height:0;padding:80px 22px 110px}}@media (prefers-reduced-motion:reduce){.brain-lab *,.brain-lab :before,.brain-lab :after{scroll-behavior:auto;transition:none}}@media 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