純粋な白い量体：円筒、箱、螺旋階段

Design a white purist villa in the manner of Le Corbusier's 1920s work, composed from pure geometric solids — a cube, a cylinder, a quadrant — assembled with machine-like precision. Compose smooth white rendered surfaces with no visible texture, a glazed cylindrical stair drum, thin steel handrails, industrial factory-style windows, a gravel forecourt, dark trees behind, sharp clear daylight producing hard-edged shadows on the white, three-quarter eye-level view, 35mm lens, architectural photography, ultra photorealistic, 8K