“OPEN”是使用 FontVibe AI 创作的霓虹光效文字效果。青色与品红交替的圆润霓虹灯管大写字母，灯管芯明亮、光晕柔和，在黑暗中把彩色倒影投在湿地面上。

rendered as real bent glass neon tubes with visible tube brackets and mounting hardware. Bright cyan and magenta neon light, sharp glowing edges with soft light bloom, visible glass tube refraction. Slightly uneven brightness between letters for realism. Pure black background — no wall, no environment, no background objects. Top tier: "NEON FONT" in tiny caps at approximately 8% of frame width, centered, delicate. Center tier: "OPEN" as massive glass tube neon letters filling 65% of frame width, the dominant anchor, perfectly centered vertically. Bottom tier: "FREE AI · PNG DOWNLOAD" in small caps at approximately 22% of frame width, centered, refined. Vertical spacing 1:5:1.5. All tiers on the same vertical axis. Cyan and magenta dual-color glass tubes, sharp light bloom, glass refraction visible. Scene context: Night street exterior of a vintage American diner, brick wall, the neon sign mounted on wall with metal brackets, rain-wet sidewalk reflecting colored neon light below, warm street lamp in far background, shallow depth of field.