地下道照明：死角のない均一な光環境

Show the lighting design of a pedestrian underpass, treating uniformity as the goal rather than brightness. Render two continuous linear light lines running the full length of the passage where the ceiling meets each wall, so the walls themselves are washed evenly from top to bottom and the space reads as bright surfaces rather than as bright fittings in a dark tube. Detail the fittings as fully recessed behind a diffusing lens flush with the ceiling plane, with no visible lamp and no glare at any viewing angle. Show the light level deliberately raised at the two entrances, brighter than the middle, so that the transition from daylight outside to the passage does not read as entering a dark hole — the reverse of the usual mistake. Detail the wall and floor finishes as light-toned with a slight sheen that bounces light without producing reflected glare. Show the absence of shadow: no dark patch anywhere along the floor or at the wall base. Include a person mid-passage clearly lit with a soft shadow. Photorealistic, evenly bright, pale, eye-level view.