circular architecture 3d model

Generate a high-accuracy 3D architectural model based on the provided reference image. The structure is a continuous organic closed-loop form resembling a flattened torus with smooth rounded edges and seamless curvature. Match the reference image in geometry, proportions, and spatial layout, including: a sunken living area at the front a central open courtyard with curved stepped seating a compact bathroom module integrated into the side a circular recessed bedroom pod positioned at the upper section Include split-level transitions and curved stair integration. Maintain large glazed openings, strip windows along the curved shell, and open voids for natural lighting. Ensure clean, quad-based topology with watertight geometry suitable for CAD conversion. Output must be optimized for export in OBJ and STEP formats for use in Rhino, Blender, and AutoCAD, avoiding excessive triangulation