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/* VERSION 2: small human experiments, quiet affordances, no gamification. */
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@media(prefers-reduced-motion:reduce){.field-open[open] .summary-arrow,.science-note[open]>summary span{transition:none}}

/* Progressive enhancement: do not offer inert controls without JavaScript. */
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.no-script-note{font:13px/1.7 system-ui,-apple-system,sans-serif;color:var(--secondary);margin:16px 0}