生成一张超写实4K北极探险家肖像，细节丰富，展现冰雪环境中的坚定神态与电影级光影。关键词：北极探险家、超写实肖像、4K。
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生成一张超写实4K北极探险家肖像，细节丰富，展现冰雪环境中的坚定神态与电影级光影。关键词：北极探险家、超写实肖像、4K。 Transform the person in the photo into an ultra-realistic 4K medium-shot portrait of a determined arctic explorer. Subject is wearing a thick, white, fur-lined winter parka with a frosted hood. Emphasize realistic stubble, tousled hair lightly dusted with snow, and a visible breath plume. The background is a whiteout blizzard with soft, dramatic blue-tinted shadows and sharp, crisp focus on the face. Cinematic, hyper-detailed, high-contrast lighting. 北极探险家 超写实 肖像 4K nanobanana