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@media(min-width:1001px){.beat-two{right:3vw;width:35%}}
.notebook{position:relative}.source-links{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:2;overflow:visible}.source-links path{fill:none;stroke:var(--yellow);stroke-width:1.3;vector-effect:non-scaling-stroke}.sources,.answer{position:relative;z-index:1}@media(max-width:1000px){.source-links{display:none}}
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/* One persistent WebGL world: every desktop chapter shares this exact canvas. */
.world-backdrop{position:fixed;inset:0;z-index:0;pointer-events:none;background:radial-gradient(circle at 69% 47%,#273027 0,#171c19 34%,var(--ink) 72%)}
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@media(max-width:1000px),(prefers-reduced-motion:reduce){.world-backdrop{display:none}.scene{display:none}.mobile-visual{display:block;width:100%;height:auto;object-fit:contain;margin-top:24px}.macro-image{display:block}.final img{display:block}.hero,.story,.product,.macro,.final,footer{background:var(--ink)}.story-stage{background:var(--ink)}.product{background:var(--product);padding-top:110px}.product-head{min-height:0}.final h2{margin-top:10px}}
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.final-wordmark{font-size:clamp(24px,2.2vw,38px);letter-spacing:.52em;margin-right:-.52em;margin-bottom:12px}.final h2{margin-top:0}@media(max-width:1000px),(prefers-reduced-motion:reduce){.final-wordmark{margin-top:10px}}

html.is-sculpture-dragging{user-select:none}

/* Stable interaction cursor: no pointer-dependent hit testing. */
.hero{cursor:grab}.hero-copy{cursor:text}.nav a,.skip{cursor:pointer}html.is-sculpture-dragging,html.is-sculpture-dragging .hero{cursor:grabbing}