create a highly realistic monochromatic 3d architectural model based strictly on the provided reference image do not change the layout geometry proportions walls stairs openings or furniture placement do not add remove or replace any furniture or architectural elements the model must remain identical in spatial layout and content to the reference style requirements strictly black and white grayscale only no colors no tints no materials with color use realistic light and shadow contrast to define depth subtle variation in grayscale values to differentiate materials matte realistic surfaces no glossy or stylized look rendering quality photorealistic architectural visualization realistic global illumination soft natural lighting accurate scale and proportions clean professional architectural presentation overall goal transform the existing model into a more realistic high end monochromatic architectural visualization without altering its design layout or furniture in any way
