复古机器人像素头像

一个方正复古机器人的36x36像素艺术头像，圆头天线，绿色示波器线条脸屏显示微笑，金属机身有铆钉细节。冷调调色板，钢灰、青柠绿配橙色点缀，粗大硬边像素，细腻阴影抖动，深青色背景带淡淡电路线，方形居中，俏皮怀旧的8位科幻氛围。

A 36x36 pixel-art avatar of a boxy retro robot with a rounded antenna, a green oscilloscope-line face display showing a smile, and rivet details on its metallic body. Cool palette of steel-gray, lime-green, and orange accents, chunky hard-edge pixels, subtle shading dither, dark-teal background with faint circuit lines, centered square, playful nostalgic 8-bit sci-fi vibe.