Longevity & Regenerative Medicine — Scroll-Controlled 3D Website Hero Animation (60fps WebGL / Three.js). As visitors scroll down or backward, 5,400 bioluminescent particles reversibly transform from a human anatomical portrait bust (0.0s) into a genomic DNA telomere helix (3.5s), stem-cell membrane (7.0s), and vascular equilibrium (10.0s).