蓝色背景俯视鱼眼复古卡片机人像

Composition: strict vertical top-down overhead portrait, subject centered on a flat saturated blue surface, very close wide-angle/fisheye lens from directly above so the head and face dominate the upper half while shoulders, torso, legs, and small shoes recede toward the bottom; minimal headroom with black upside-down floor text near the top edge and small black text near the feet; keep the slightly awkward snapshot crop and exaggerated perspective.

Grade: early-2000s compact-camera flash look with saturated cobalt blue and bubblegum pink, medium contrast, crisp center sharpness with mild wide-lens edge softness, visible fine digital grain on the blue floor and faint skin texture with pores and slight cheek unevenness, glossy highlights rolling off a little harshly rather than softly, no beauty-filter smoothing.

Negative: beauty-filter smoothing, studio glamour lighting, normal eye-level perspective, long-lens compression, extra props or furniture, changed outfit colors, cleaned-up symmetrical crop, a different person or blended face replacing the uploaded Sidona identity, high-fashion model bone structure, elongated editorial face, or sharpened jaw, tiny, hidden, or turned-away face dodging identity verification, lightened blonde, silver, grey, or ash hair identity drift, plastic beauty-filter skin with no pores or texture

构图：严格的垂直顶视俯拍肖像，主体居中于平坦的饱和蓝色表面，来自正上方的极近广角/鱼眼镜头，使头部和脸部占据上半部分，而肩膀、躯干、腿和细小的鞋子向底部后退；留白极少，顶部边缘附近有黑色倒置地面文字，脚部附近有黑色小字；保持略显尴尬的快照裁剪和夸张的透视。

调色：2000年代初期卡片机闪光灯外观，带有饱和的钴蓝色和泡泡糖粉色，中等对比度，中心锐度清晰，广角镜头边缘轻微柔和，蓝色地板上有可见的精细数字颗粒，以及带有毛孔和轻微脸颊不平整的细微皮肤纹理，亮部高光流转略显生硬而非柔和，无美颜滤镜平滑处理。

负面：美颜滤镜平滑，影棚魅力照明，正常视平线透视，长焦镜头压缩，额外的道具或家具，改变的服装颜色，整洁的对称裁剪，替换上传的Sidona身份的其他人或混合面孔，高级时尚模特骨骼结构，拉长的编辑风格面部，或锐化的下颚，微小、隐藏或转过脸以躲避身份验证，淡化为金色、银色、灰色或灰白发的身份漂移，没有毛孔或纹理的塑料美颜滤镜皮肤