use the attached image as the base image keep everything exactly as it is except for the underside geometry of the ground floor horizontal beam the current ground floor columns are correct do not modify their geometry the upper levels already establish the architectural detail that must inspire the ground floor the horizontal element has a very soft and subtle curved geometry where it encounters each projecting vertical element apply this same connection principle to the ground floor horizontal beam adapted to the larger scale of the ground floor important the curvature belongs to the horizontal beam do not round the corners of the ground floor openings do not round or curve the vertical columns the large ground floor columns must remain straight sharp faceted vertical elements exactly as they currently are only modify the underside of the horizontal beam the underside should remain almost horizontal through most of each bay but develop a very soft subtle and gradual vertical curvature as it approaches and connects with each column this should read as a gentle deformation of the horizontal beam itself use the upper floor horizontal to vertical connection as the reference for the architectural language the ground floor version should be softer more subtle less pronounced adapted to the larger structural scale it must not read as an arch critical do not create rounded rectangular openings rounded corners arches arcades semicircular openings curved window heads curved glazing filleted column corners pointed transitions triangular transitions the glazing behind must remain completely rectangular and recessed the ground floor columns must remain exactly as they are same square cross section same 45 degree rotation same width same depth same height same position only adjust the underside surface of the horizontal beam preserve everything else exactly camera crop upper fa ade upper vertical elements upper horizontal elements windows balustrades ground floor columns recessed glazing doors all dimensions and proportions white 3d geometry model only uniform matte white architectural model neutral light grey transparent glazing only no materiality no stone no concrete texture no timber no colours no material joints no landscape no trees no plants no people no furniture no environment no photorealistic materials one change only softly deform the underside of the ground floor horizontal beam at its connection with each column everything else must remain exactly unchanged