✨ Features
• 9 math categories (Counting, +, −, ±, ×, ÷, ×÷, Advance, Exam)
• Multi-user (up to 5 users)
• 300+ story problems from CSV
• Bilingual (ID/EN) with real-time toggle
• PWA (install & offline)
• Procedural music & animations
⚙️ Technology
HTML5, CSS3, JavaScript (Vanilla)
Web Audio API, Service Worker, Manifest
localStorage + Cookie fallback