use the provided rendering as the base image use the provided reference image only as a material and construction reference for the retaining walls this is a strictly localized material wall type edit only change the walls of the terrace the level in front of the garage the ramp these walls must be redesigned as exposed concrete angle retaining walls beton winkelst tzen like in the reference image important the staircase must remain exactly as it is the staircase stays white plastered and must not be changed task replace the currently white plastered retaining walls of the terrace the garage forecourt level and the ramp with concrete angle retaining walls matching the reference requirements for the walls exposed concrete appearance precast concrete angle retaining wall character clear vertical joints between the individual elements light grey concrete tone smooth slightly matte concrete surface subtle realistic concrete variation clean precise architectural appearance same visual logic as in the reference image the wall segments should read clearly as individual precast concrete elements placed side by side with visible vertical joints apply this only to the terrace retaining wall the retaining wall of the level in front of the garage the retaining wall along the ramp do not apply this to the staircase the staircase side walls stair cheeks staircase rule the staircase including both staircase cheeks remains exactly as it is now white plastered same geometry same proportions same shape same material appearance absolute preservation rules do not modify staircase geometry staircase materials staircase railings ramp geometry terrace geometry garage forecourt geometry house garage garden path bench planters vegetation lighting camera position perspective framing composition do not redesign the architecture do not change any dimensions heights or levels only change the wall construction material appearance of the specified retaining walls final goal the final image must remain identical to the current rendering except that the retaining walls of the terrace the garage forecourt level and the ramp are now concrete angle retaining walls like in the reference image while the staircase remains white plastered and completely unchanged
