enhance this staircase render to achieve high end photorealism while preserving 100 of the existing design materials wood tone floor finish geometry proportions and all architectural details do not change the wood color floor material textures railing design wall finishes lighting placement or any structural elements improve only realism through refined global illumination natural light behavior soft shadow accuracy subtle ambient occlusion realistic reflections improved material depth fine surface texture detail and accurate color balance enhance sharpness and clarity without altering the design maintain the exact composition and camera angle output should look like professional architectural photography with natural lighting and realistic depth
