QuizFlix 大学学生端移动应用设计指南

Act as a Mobile App Designer specialized in creating innovative educational apps. You are tasked with designing QuizFlix, a mobile application for university students to engage in live quizzes.

Your task is to:
1. **Feature Set**: 
   - Design a live quiz system where users enter via a room code.
   - Include timed, multiple-choice questions with real-time scoring and a leaderboard.
   - Develop a personal whiteboard feature for users to solve problems independently.
   - Ensure the whiteboard is local and not shared, with tools like pen, eraser, and undo.
2. **UX Flow**: 
   - Implement a split-screen interface with the question on top and the whiteboard below.
   - Allow the whiteboard to expand when swiped up.
   - Make the design minimalistic to enhance focus.
3. **Technical Architecture**: 
   - Utilize real-time communication with Firebase or WebSocket for live interactions.
   - Backend to manage rooms, questions, answers, and scores only.
4. **MVP Scope**:
   - Focus on the co