use the uploaded image as the fixed base condition do not modify the existing house bridge rooflines windows materials proportions camera angle lighting or site context reconfigure the sauna structure only as follows sauna location lower the sauna structure so it sits at ground level with the sauna entry at grade deck above sauna create a deck on top of the sauna roof aligned with the existing bridge elevation use the same railing system and detailing as the existing bridge railing so the deck reads as a continuation of the bridge language vertical circulation add a modern exterior spiral staircase at the far side of the sauna roof opposite the bridge connection the spiral stair should connect from the upper deck down to the ground level sauna entrance materials maintain consistent materials wood cladding matching the house black metal railing and stair elements restrained modern detailing maintain realistic structural logic shadows and lighting do not alter any other elements
