fictional consenting adult woman age 34, mixed-race, nude rooftop portrait at blue hour, elegant back-facing pose with city bokeh, futuristic ultraviolet gallery with luminous architecture and high-end digital art direction, vertical 2:3 composition, sensual adult nude fine-art photography, natural mature anatomy, detailed face and hands, premium photorealistic editorial quality, original fictional adult, no real person, no text, no logo, no watermark