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 enhance the custom under stair shelving with a refined warm ivory matte finish realistic fine texture precise joints clean edges accurate shelf thickness consistent shadow gaps and soft natural reflections preserve the exact triangular stepped geometry beneath the staircase and every horizontal and vertical shelf division maintain the three lower storage cabinets in their exact positions and dimensions render them with smooth matte lacquer surfaces precise panel edges natural contact shadows and restrained reflections do not add handles or change 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 books sculptures or accessories maintain all integrated vertical led lights in their exact locations use a warm 2700 3000k colour temperature with realistic light falloff soft shelf illumination controlled highlights and natural shadows avoid excessive glow overexposed light strips or artificial looking illumination 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 fine pores subtle tonal variation precise joints and a satin matte finish render the balusters with realistic metal texture correct spacing and structurally believable connections maintain the classical door on the left warm neutral walls herringbone flooring and foreground rug exactly as shown enhance the flooring with detailed natural 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 natural ambient daylight combined with the existing recessed spotlights and shelf leds add physically accurate global illumination ray traced reflections ambient occlusion realistic contact shadows natural light falloff 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 new objects no additional books no added decorations 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 no harsh shadows and no plastic looking materials