Magic Christmas Tree

Develop a fully functional immersive 3D interactive application named Magic Christmas Tree, with core functionality centered on real-time gesture recognition as its primary interaction method. The application should deliver a smooth, responsive user experience across compatible consumer devices that support standard camera-based motion capture capabilities, eliminating the need for additional specialized hardware for core interactions.
The core visual element is a highly detailed, lifelike 3D Christmas tree rendered with realistic lighting effects, including dynamic warm fairy lights, shimmering tinsel, and a glowing star topper that responds to user inputs in real time. Design a diverse range of gesture-triggered interactive effects: when users perform a waving gesture, a cascade of virtual snowflakes will gently fall around the tree; a pinching gesture will trigger small wrapped presents to appear at the tree base; a swiping gesture across the field of view will cycle through different themed decorative sets, ranging from classic red-and-gold festive styles to cool winter blue palettes.
Ensure the gesture recognition system runs with low latency, accurately identifying common natural hand movements without frequent false triggers, and include clear onboarding prompts when the application first launches to guide users through basic interaction gestures. Add soft, looping festive background music that adjusts volume dynamically based on interaction intensity, and include subtle particle effects for every successful gesture trigger to enhance the immersive, joyful holiday atmosphere. The interface should be clean and unobtrusive, keeping focus on the 3D tree and interactive elements to maintain a seamless, engaging user experience for all age groups.