A scroll-scrubbed, infinitely-looping 3D card gallery — cards hang off a receding gantry track using real CSS perspective/preserve-3d, the whole tray tilts toward the pointer like a specimen table, and whichever card sits nearest the camera (by depth, not mouse distance) gets a procedural focus highlight and its title pushed to a live readout.
Use when a scroll-driven receding 3D card gallery that loops seamlessly and highlights whichever card is nearest the virtual camera; reach for scroll-particle-tunnel instead for a scroll flythrough of unlabeled particles with fixed-depth text callouts, not a catalog of discrete labeled items.