Elegant Evening Gown on Neon Staircase

Fashion editorial portrait of a [young woman] seated elegantly on wide, modern concrete stairs, looking back over her shoulder at the camera with a subtle, engaging smile. She is wearing a sleek, backless, floor-length [black] evening gown with thin straps and a thigh-high slit, emphasizing an hourglass silhouette. On her feet are high-heeled [gold leopard-print] gladiator sandals with thin straps winding up her calves. Minimalist stud earrings. Dark brown hair styled in a chic, messy high bun with soft loose strands framing her face; refined smoky eye makeup and nude lips. Setting and Lighting: Indoors on minimalist architectural steps. Dramatic, high-contrast cinematic lighting with a striking background gradient of deep purple and magenta-pink neon glow, creating soft bokeh. Sharp focus on subject, detailed skin texture, delicate fabric sheen, 85mm lens portrait aesthetics.