awnish9002/jjk ? reverse-engineered prompt

Build me a single page web app that turns my webcam hand gestures into Jujutsu Kaisen style cursed technique visuals in the browser.

I want it to feel like a fun live demo where different hand poses trigger different effects, like a pinch for Hollow Purple, crossed fingers for Infinite Void, one finger pointing up for Red, and a flat prayer like hand for Malevolent Shrine. The visuals should look dramatic and particle based, with glowing energy, swirling motion, bright cores, dark auras, and a strong anime inspired feel.

It should run in a normal browser with webcam access, and if you need to check current docs for the hand tracking or 3D rendering libraries, go ahead and look them up online. Keep it all in one clean page if possible, and make it easy to open locally and test with a webcam.