Give the scene a job
Write down what the visitor should learn or do after the scene changes. For a homepage with four chapters, each transition should reveal a different idea and a clear next step. Keep chapter names in normal HTML so readers can scan and jump ahead.
Keep the navigation predictable
Make the scroll position and active chapter agree. A visitor who jumps to a section should be able to go back without replaying the opening. Keep contact, services and work within reach even when the scene is paused.
Design for touch and reduced motion
A hover cue disappears on a phone, so give the touch interaction an explicit control or visible target. Build a still frame that communicates the same idea as the motion. Try the flow with reduced motion, keyboard navigation and a narrow screen.
Test the moment after the first frame
Record what happens when someone scrolls quickly, taps during a transition or returns after switching apps. Measure interaction responsiveness as well as initial load. If a scene keeps drawing while nothing changes, render on movement and let visitors opt into continuous motion.
Make the thinking useful.