Holo Billboard Frame

Wall or roof mounted display frame 4m wide and 2m tall matching the 4m module, a thin white chamfered bezel around one flat emissive panel with a soft pastel gradient and a few blocky abstract shapes.

风格：low-poly, flat-shaded vertex colors, no textures, 2 materials: the shared opaque one plus a distinct surface (glass, water or chrome), which stays its own mesh through mergeAssets rather than merging into the rest; shares palette and scale with its kit