集水与排水：屋顶形状由雨水决定

Design a roof in the manner of Glenn Murcutt where the entire form is generated by water — a shallow butterfly section that funnels every drop to a central valley, a visible chain and channel carrying it to storage tanks that are treated as architecture rather than hidden. Compose a curved corrugated steel roof falling to a central open gutter, a heavy chain hanging from the outlet to a round galvanised tank standing beside the house, an overflow channel cut into the ground, dry grass and rock, light rain falling with water running visibly along the route, eye-level three-quarter view, 35mm lens, architectural photography, ultra photorealistic, 8K