Wayfinding Stripe Decal

Flat floor decal under 0.02m thick spanning the full 2m module so runs continue across tile seams, carrying two or three coloured department guide stripes with a straight / corner / T-branch / arrow-head junction knob.

风格：low-poly, flat-shaded vertex colors, no textures, single shared material, so any set of these merges to one draw call; shares palette and scale with its kit