hand atlas

An anatomy viewer as a self-playing product loop, on an 18.2-second cycle. A dark app window holds a render of a left hand in the middle, a glass specimen panel on the left (Left hand, SPC-2214, adult, dorsal; age, length and span; the layer list with counts; a Labels switch; a build timer; the reviewer, Dr. Mira Okafor) and a glass panel on the right with the layer's metrics, bars, a chart by region and a note. A demo pointer clicks the layer pills under the render: each click wipes the hand up to the next layer, skeleton to ligaments to vessels and nerves to the full network, along a frayed front that glows as it runs from the wrist to the fingertips. The list highlight and the pill slide over, the read-out counts the structures, the right panel's rows lift out and rise back in, its bars fill and its chart grows, and three callouts pop out on the hand with a point, a drawn leader line and a glass chip. The last click wipes back down to the skeleton, so the loop joins up. WebGL2 for the render (four aligned 1280 × 1280 images and one shader), HTML and CSS with React for the rest, Geist and JetBrains Mono, Phosphor icons, a 1080 × 1080 stage that scales to fit any window, and frame-exact rendering (window.__render(t), window.__LOOP, window.__MANUAL). The renders and the avatar are AI-generated; the reviewer and the specimen are fictional.