A web app for learning TOEFL vocabulary, inspired by Baicizhan (百词斩).
Optimized for Android browsers with responsive design and offline support.

• Flashcard-style word review
• Spaced repetition algorithm
• Word definitions, example sentences, and pronunciation
• Progress tracking
• Mobile-first UI

• HTML5 + CSS3 + JavaScript (vanilla)
• LocalStorage for offline data
• Responsive design (viewport meta, touch-friendly)
• Web Audio API for pronunciation