“HAPPY BIRTHDAY”是使用 FontVibe AI 创作的3D 黄金文字效果。高级 3D 黄金金属质感文字，暖调浓郁，高光如镜面般闪亮。冠军气场、奢牌质感——适合 YouTube 横幅、生日贺卡、Discord 头图。

24-karat gold metallic surface — three-tone spectral gradient: deep amber-brown in shadow recesses, rich warm gold on lit faces, razor-thin champagne-white specular lines where direct light strikes. Single hard key light from upper-left at 45°, casting crisp directional shadows to lower-right. Background: near-black with faint warm amber ambient glow. No colored tints — pure dark void that forces the gold to own all luminosity in the frame. Square 1:1. A luxury matte-black gift bag standing upright on a dark marble surface, product photography. Front panel: 'HAPPY' and 'BIRTHDAY' stacked, hot-stamped in gold foil — three-tone gold clearly visible on the matte black surface: warm gold letter faces, amber-brown where the foil creases into the paper texture, champagne-white specular catching the cold studio key light from upper-left. Gold rope handles at the top. Beside the bag: a small gold wax-sealed tag. Soft overhead studio light, minimal shadows. Luxury gift packaging carrier — premium birthday celebration merchandise.