transform this staircase and under stair shelving render into a 4k ultra photorealistic architectural visualization preserve the exact camera angle framing perspective architecture staircase geometry number of steps railing handrail shelving dimensions shelf divisions lower cabinets door books decorations lighting positions flooring rug colours materials and object placement do not redesign resize move add or remove anything keep the shelving lower cabinets structural panels stair risers and all currently white elements in the exact same white colour shown in the original image do not recolour or reinterpret the white finish it must not become ivory cream beige greige grey yellow pink or another shade natural light and shadows may create realistic tonal variation but the base material colour must remain exactly the same white enhance the white under stair shelving with a realistic smooth satin matte finish subtle fine texture precise joints clean edges accurate shelf thickness consistent shadow gaps and controlled reflections preserve the exact triangular stepped geometry and every horizontal and vertical shelf division maintain the three white lower storage cabinets in their exact positions and dimensions keep their original white colour unchanged render them with precise panel edges natural contact shadows and realistic satin matte material response do not add handles or alter the cabinet design preserve the exact existing books and decorative objects keep their number size colour orientation and shelf positions unchanged do not add remove duplicate or rearrange any books sculptures or accessories maintain all integrated vertical led lights in their exact locations use the existing warm light temperature with realistic falloff soft shelf illumination controlled highlights and natural shadows the warm lighting must not change the actual white colour of the shelving or cabinetry preserve the staircase s exact white risers dark wood treads wood handrail slim vertical balusters support details and continuous railing enhance the dark wood with authentic grain subtle tonal variation precise joints and a satin matte finish render the balusters with realistic material texture correct spacing and structurally believable connections maintain the classical white door neutral walls herringbone flooring and foreground rug exactly as shown enhance the flooring with realistic wood grain accurate plank joints subtle imperfections and soft reflections render the rug with fine woven fibers realistic thickness and natural contact with the floor use soft ambient daylight combined with the existing recessed spotlights and shelf leds add physically accurate global illumination ray traced reflections ambient occlusion realistic contact shadows controlled highlights neutral white balance balanced hdr exposure and cinematic tonal depth professional high end architectural photography full frame camera perfectly straight vertical lines accurate perspective corona renderer v ray quality ultra photorealistic highly detailed crisp focus 4k resolution no people no colour changes no ivory or cream tint no added books no new decorations no removed accessories no changed shelving no altered cabinet divisions no modified staircase no changed railing no distorted geometry no excessive led glow no blur no overexposure no oversaturation and no plastic looking materials