黑白硬光男士肖像

生成一张 4:5 竖版黑白硬光男士肖像。主体是一位 35 岁左右的东亚男性，短发，穿黑色高领衫和深色外套，站在纯灰摄影棚中。强烈硬光从左上方打下，形成清晰几何阴影，突出鼻梁、颧骨、下颌线和手部轮廓。构图为上半身三分之二侧身，一只手轻触领口，眼神看向镜头外。纯黑白高反差摄影，保留皮肤细节，人物比例自然。无文字、无 logo、无水印。

Create a 4:5 vertical black-and-white hard-light male portrait. The subject is an East Asian man around 35 with short hair, wearing a black turtleneck and dark coat in a plain gray studio. A strong hard light from the upper left creates sharp geometric shadows, emphasizing the nose bridge, cheekbones, jawline, and hand silhouette. Frame him as an upper-body three-quarter pose with one hand touching the collar and his gaze looking off-camera. Pure monochrome, high contrast with skin detail preserved, natural proportions. No text, logo, or watermark.