仿生机械胸部纹身

生成一张 4:5 竖版 1024x1280 的纹身设计稿摄影图，主题是生物机械风胸甲图案，但只展示在米白色厚纹理纸上的完整设计稿和灰色无性别人体模型轮廓示意，不出现真人身体、皮肤、伤口、血液或暴力场面。图案由黑色精细线稿、金属齿轮、流线管路、装饰性铆钉、对称胸甲结构组成，像高级纹身师的专业 flash sheet。纸张放在深灰工作台上，旁边有无品牌铅笔、描线笔和透明尺。左上角小中文标题写「示例内容 机械纹样」，其余标注为中文「对称结构」「肩线参考」「胸甲中心」。所有可见文字为自然简体中文，不出现英文、真实品牌、logo、水印或乱码。

A biomechanical tattoo design for a chest piece, showing a partially torn-open skin effect that reveals clockwork gears, hydraulic pistons, braided steel cables, and articulated robotic joints beneath. The illusion of peeled skin is created with hyper-realistic shading: warm flesh tones with subcutaneous fat layers in cream-yellow, then the cold chrome-gray metallic machinery below. The mechanical components include a large spiral gear at the sternum, two opposing pistons across the pectoral muscles, and thin cables running toward the shoulders. Metal surfaces are rendered with specular highlights and brushed-steel texture. Flesh edges curl back with micro-wrinkle detail and dark shadow underneath. The design is black-and-gray with strategic warm-flesh tones only at the skin-tear edges. Mood is cinematic and unsettling. Composition spreads across a wide chest reference panel, landscape orientation, approximately 30 cm span.