“RETRO”是使用 FontVibe AI 创作的复古文字效果。衬线大写字母凸版压印进米色棉卡纸，墨色略有破损，放在旧印刷机台面上，周围散落金属活字。

painted on a vintage tin sign with slightly chipped and weathered paint revealing rusty metal underneath. Classic bold serif letterforms with retro cream and deep red color palette. Square 1:1. RETRO as vintage American tin sign lettering, perfectly centered. Scene: warm dark tobacco brown background. Letters painted in thick cream-white paint over aged rusty metal — multiple paint layers visible at chip edges revealing red primer and bare rust beneath. Classic bold condensed serif letterforms. Warm directional light from upper left casting soft shadows. Aged, patinated, mid-century diner sign quality.