A futuristic 4K seamless VJ loop featuring a glowing dark cyan heart reactor core transformed into a symmetrical kaleidoscope inside an immersive particle tunnel. The heart-shaped energy core pulses as sparkling particles and luminous trails flow through mirrored geometric patterns, creating a romantic cyberpunk and science-fiction atmosphere. Ideal for VJ and DJ performances, music videos, livestream backgrounds, social media content, LED walls, projection mapping, wedding productions, and live stages. Resolution: 3840×2160 (4K UHD) Frame Rate: 30 fps Loop: Seamless Audio: None