Strong rule: style --- Cinematic steampunk aesthetic, rich brass and polished copper textures, volumetric steam and golden hour lighting, intricate clockwork details, hyper-realistic 8K. ---. A close-up of a large, weathered copper steam whistle mounted on a brick wall, releasing a thick plume of white vapor. The lighting is low-key, with the glow of the city lights reflecting off the wet copper surface. The mood is final and industrial. The background is a dark, atmospheric street scene beginning to fade into shadow.
