refine this image into a high end architectural portfolio cover while preserving the exact layout geometry and composition do not change any design elements enhance the floor plan linework with clear hierarchy primary walls slightly heavier secondary lines lighter with a refined inked architectural drawing quality soften and slightly fade the outer plan areas so they recede while keeping the linework crisp near the 3d portion introduce a subtle gradient transition where the flat plan meets the raised 3d model so the connection feels intentional and composed strengthen the raised 3d portion as the focal point increase clarity contrast and depth enhance warm interior lighting so it glows more visibly from within lamps indirect lighting window light spill improve global illumination and ambient light inside the rooms for a soft realistic atmospheric effect maintain soft cloud shadows across the background but keep them subtle over the plan linework refine the background into a clean fine paper texture with very subtle grain add a soft vignette so edges fall off slightly and the composition centers on the 3d portion add a soft realistic grounding shadow beneath the raised 3d mass the result should feel like a refined editorial architectural presentation minimal atmospheric and compositionally balanced do not redesign or reinterpret any elements
