Scroll Animations Apply Disney's 12 principles to scroll-triggered motion. Principle Application Squash & Stretch : Elements can compress slightly while scrolling fast, settle when stopped. Anticipation : Content should be slightly visible before full reveal. Start animations at 10-20% visibility. Staging : Reveal content in reading order. Top-to-bottom, left-to-right progression. Straight Ahead vs Pose-to-Pose : Define clear "hidden" and "revealed" poses. Scroll position interpolates between them. Follow Through & Overlapping : Stagger reveals. First element triggers at 20% viewport, next at…