「Happy birthday」は FontVibe AI で作成したネオングローの文字エフェクトです。シアンとマゼンタを交互にした丸いネオン管の大文字。明るい管の芯と柔らかなにじみ、暗がりの濡れた地面に色の映り込み。

rendered as a classic roadside neon sign with warm glowing tube light in soft pink and amber. Visible glass tube bends and mounting brackets on a dark painted metal backing plate. Warm light halo and bloom around each letter, slight buzzing energy feel. Happy birthday in intense neon-glow-pulse lettering — each letter radiating multiple overlapping glow rings in electric pink and purple on pure black. The text feels like it's broadcasting from inside a cyberpunk music video. Wide 16:9 — social media headline neon for the self-aware, trend-forward creator.