glass staircase 3d model

Realistic 3D model of an entrance staircase made of transparent tempered glass steps with books sealed inside. 3–4 wide steps, each a hollow glass box framed by dark matte metal. Inside, vintage books lie neatly in various orientations with visible covers and pages in beige, blue, red, and brown tones. Warm LED strip lighting runs along inner edges, softly illuminating books and glass reflections. Use accurate PBR materials: clear glass (IOR 1.52, low roughness), brushed dark metal (roughness 0.3, metallic 0.8), realistic paper and leather book textures, emission for light. Focus on photorealism — crisp shadows, soft reflections, neutral environment, no people, isolated on transparent background. Keywords: glass stairs, illuminated steps, books under glass, modern architectural design, cozy lighting, photorealistic 3D model.