硬阴影棚拍肖像

生成一张 4:5 竖版硬阴影棚拍肖像。中国女性模特站在纯白影棚墙前，穿黑色无袖连衣裙，身体侧对镜头，头转向镜头，双臂自然垂放。右上方单个硬光源在白墙上投出清晰几何阴影，阴影形状来自窗格遮光片，但不要出现文字。构图为膝上到头部，人物位于左下三分之一，大片白墙和锐利阴影占据右侧。色调只有黑、白、自然肤色和少量灰影，极简图形感。70mm 镜头，人物比例真实，手臂和脖颈自然。画面内不要出现任何可读文字、logo、水印、品牌、装饰画或摄影棚标识。

Create a 4:5 vertical hard-shadow studio portrait. A Chinese female model stands in front of a pure white studio wall, wearing a black sleeveless dress. Her body is turned sideways to the camera, her head turned back toward the lens, arms hanging naturally. A single hard light from the upper right casts crisp geometric shadows from a window-grid gobo onto the white wall, with no text. Composition from knees to head, subject in the lower-left third, with a large white wall and sharp shadows occupying the right side. Palette only black, white, natural skin tones, and light gray shadow; minimal graphic feel. 70mm lens, realistic proportions, natural arms and neck. No readable text, logo, watermark, brand, decorative painting, or studio mark anywhere.