Chân Dung Thể Thao Đô Thị Ban Đêm Trên Bậc Thang

Cinematic low-light fitness portrait of a confident young woman sitting casually on modern concrete stairs outdoors at night in a moody urban setting. Centered vertical framing, one leg extended down to a lower step, the other knee bent upward, one hand resting near a stainless steel water bottle beside her raised leg. She wears an oversized [dark brown] pullover hoodie with loose sleeves, fitted [black] biker shorts, white ribbed crew socks with a small black swoosh logo, and chunky gray-and-white running sneakers. Her dark hair is tied back in a slightly messy athletic style, with a natural confident posture; her face is softly anonymized or slightly out of focus. Broad architectural gray concrete steps, a tall concrete wall behind her illuminated by four warm vertical wall sconces, with subtle warm linear strip lighting under the stair treads. Faint, blurred city lights bokeh in the upper right background. 35mm lens portrait perspective, shallow depth of field, high dynamic range, soft warm highlights contrasted with cool shadows, detailed fabric textures, natural skin tones, moody cinematic color grade, no text or watermark.