「THIRTY」は FontVibe AI で作成したラグジュアリーバースデーの文字エフェクトです。深く暗い背景に映える、上品な金箔の文字。カラフルな紙吹雪を使わず、洗練された金の文字とほのかな輝きだけで仕上げる、ミニマルな装飾のプレミアムなバースデーエフェクトです。節目のお祝いや高級感のあるカードに最適です。

rendered in luxury gold foil birthday style. Letters in premium metallic gold — gradient from bright gold highlight to deep warm shadow, subtle surface sheen and fine gold dust particles. Deep dark background (near-black or deep navy). Clean minimal composition — no colorful confetti, no colored balloons. Optional fine gold border frame or minimal gold star scatter (≤8 pieces). Wide letter spacing. High contrast gold-on-dark. Premium printing quality aesthetic. THIRTY as bold gold foil letters, centered vertically filling 65% of canvas. Deep near-black background with subtle dark gradient. Letters in premium metallic gold — bright highlight on top, deep warm shadow on faces. Below the main text, a thin gold divider line, then small elegant caption text '30'. Fine gold border frame. Minimal gold star scatter (6 pieces). No colorful elements. Premium milestone birthday card aesthetic — luxury stationery quality.