Model and render a single 3D object with as much detail and realism as you can: an antique gold mechanical pocket watch, open, lying at a slight angle. Show the enamel dial with numerals, minute track, hands and sub-seconds dial, the crown and bow, the hinged lid with engraving, and a see-through caseback or cutaway revealing the movement: gear trains with real teeth, a balance wheel with hairspring, jewels, screws, bridges with perlage/Geneva striping. The gears and balance wheel should animate plausibly. Everything procedural in code (no downloaded models or textures). Prioritise geometric detail, physically based materials (polished gold, brushed steel, ruby jewels, glass crystal with reflections) and studio lighting with an environment map, soft shadows and tasteful post-processing. Hero framing: it should look like a luxury product shot. Output a single HTML page using three.js. No external assets, model everything manually. Inspect your renders closely and keep raising the level of detail until you are genuinely proud of it. Do 2-3 iterations of this, then stop.