extend the image vertically both upward and downward while preserving the exact existing graphic style composition language textures lighting and architectural linework the newly generated upper and lower areas must blend seamlessly with the original image maintaining identical proportions perspective materials shadows and visual rhythm keep the original central image completely unchanged and perfectly identical with no modification to the existing design the extension must feel like a natural continuation of the same image with consistent minimal architectural aesthetics and flawless continuity from top to bottom
