一款面向高端机甲动漫极客文化的 T 恤图案，完全透明背景且无任何底色，置于方形画布正中，主视觉对象为一只造型强劲的 3D 人形机甲头部与上半身…

A premium mecha anime nerd culture t-shirt graphic isolated on full transparency with no background, centered in a square canvas, featuring a powerful 3D humanoid mecha head and upper torso as the hero object, built from layered chrome armor plates with sharp angular surfaces, glowing cyan visor eyes, neon orange energy seams between the armor joints, and subtle battle-worn scratches that add realism and depth; behind the mecha, a clean explosive burst of thin mechanical rays, floating bolts, and small geometric tech fragments arranged with precision for a strong silhouette; the only text should be the large title "STEEL REBELLION" in a single bold futuristic display font, oversized, highly legible, and placed prominently below the mecha; no tiny text, no subtitles, no extra words, no scenery, no frame, no halo, no background elements, crisp sharp vector-clean edges throughout, optimized for direct-to-garment printing and merch sales, high-resolution 4000x4000 px, professional 3D render quality, isolated on complete transparency, 1:1 square ratio.