photorealistic enhancement of an existing grand interior staircase keep the original architecture materials and camera perspective unchanged add astera ax3 lightdrop fixtures placed evenly along both sides of the stairs positioned on every 2 3 steps near the wall facing upward each fixture should emit a soft but vibrant cyan blue uplight washing the walls evenly from floor to ceiling light should feel realistic with natural falloff subtle gradients and slight spill onto the stairs and handrails maintain symmetry on both sides ensure the lighting enhances the architectural details of the walls and ceiling with a clean high end event lighting look the fixtures should be small discreet matte black units consistent with astera ax3 design preserve all original textures including stone steps brass handrails and wall finishes keep ambient lighting balanced so the scene remains elegant and not overexposed style realistic event lighting cinematic high end production design soft diffusion accurate shadows no exaggerated glow
