On the 3D visualization page, click the "3D demo warehouse" button next to the warehouse selector (or pick "3D 演示仓（DEMO）" from the dropdown). It is a complete standalone warehouse: Zone A bulk storage, Zone B picking, Zone C staging, plus 8 dock doors on the north wall — with demo inventory bound to every bin, so colors and click-through details all work.

Zone A (bulk storage): 6 aisles × 2 rows × 30 bays × 5 levels = 1,800 bins, mostly full (red/yellow).
Zone B (picking): 5 aisles × 2 rows × 28 bays × 3 levels = 840 bins, mixed occupancy.
Zone C (staging): 60 floor staging positions, mostly empty (green).
8 dock doors on the north wall, color-coded by status (available / in use / inactive). Click a door to see it.
Demo inventory only lives in the demo warehouse — your real warehouses and stock are never touched.