Scroll-Scrubbed Visual Sequence Turn one visual transformation into a responsive scroll instrument. Keep the page usable without motion and keep the renderer replaceable. Define the sequence Write the visual states before coding: Use one normalized value for every renderer: Never make wheel delta, elapsed time, or autoplay the source of truth. Native scroll position must determine the exact visual state in both directions. Choose the renderer - Use video when the sequence is continuous, photographic, or expensive to render live. Encode frequent keyframes, preload metadata, reserve the aspect…