Timeless Elegance on a Marble Staircase

A cinematic fashion portrait of an elegant woman standing midway on a grand marble staircase inside a classical palace hall. She wears a flowing deep-red satin evening gown with a dramatic long train cascading down the steps. The architecture features symmetrical marble railings, arched windows, and a glass skylight that fills the scene with soft natural daylight. Her hair falls in loose waves, her pose is poised and confident, and she gazes calmly toward the camera. Google Gemini Ultra-realistic textures, detailed fabric folds, soft shadows, shallow depth of field, luxury editorial fashion photography, museum-like atmosphere, timeless elegance, high resolution, 1:1 aspect ratio.