Re-envision the interface such that it's much more simple, intuitive, engaging, and delightful.

1. Preview: Getting a sneak peak of the case and any relevant information and instructions.
2. Insight: This is the main/core loop: sequentially revealing the case findings one by one and updating their differential.
3. Summary: Receiving feedback on their accuracy and efficiency after submitting their differential, as well as seeing other solvers' submissions.