- Update globals.css reduced-motion block: 0.01ms → 0.001ms durations
and add scroll-behavior: auto to suppress all transitions/animations
when OS reduced-motion preference is active.
- Gate canvas-confetti burst in GameModal behind matchMedia check so
the particle effect is skipped entirely for users who opt out of motion.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>