Create a photorealistic image of an indoor atrium featuring a grand staircase at twilight. The architecture should be modern, with clean lines and tiled floors reflecting the ambient lighting. Install pink and teal neon lights along the edges of the stairway and across the ceiling, casting a vibrant glow that contrasts with the natural fading light from the sky. The space should be adorned with lush greenery, adding a touch of organic life to the scene. At the top of the stairs, there should be a large, backlit mural of a tropical sunset, infusing the scene with warm colors and a dreamy atmosphere. The overall setting should evoke the nostalgic essence of a retro-futuristic mall from an 80s movie, serene and almost surreal in its ambiance. --ar 2:3