Accessible Animation (Reduced Motion, Tiered) Honor as a graceful degradation , not a kill switch. The OS-level setting (macOS: Settings Accessibility Display Reduce motion; Windows: Settings Accessibility Visual effects Animation effects; iOS/Android equivalents) signals that vestibular-triggering motion causes nausea, dizziness, or migraines. The correct response is to remove the dangerous motion while keeping orientation cues. When to use Use when adding or auditing animation in a web UI, when a user reports motion sickness or WCAG findings, or when integrating animation libraries (GSAP, F…