テンション膜屋根のバスシェルター：薄いファブリックと細いケーブル

Design a bus shelter as a tensioned fabric structure. Show a single sheet of white PTFE-coated membrane stretched into a saddle-shaped double curvature between four points — two tall slim masts on one side and two low anchor points on the other — so the surface twists as it spans and never reads as flat. Detail the edges as cabled catenaries, the fabric hemmed around a fine stainless cable that curves gently between corner castings. Show the masts as slim tapered steel tubes with visible tensioning hardware at their heads — turnbuckles, forks, pins — celebrated rather than hidden. Detail the membrane as translucent so daylight passes through and the structure glows faintly, with the cable shadows reading as fine curved lines on the ground below. Show a simple bench of perforated metal beneath. Set it on an open plaza with a wide sky behind so the curvature reads against it. Show bright daylight with the fabric luminous. Photorealistic, taut, white against blue sky, low three-quarter view.