“Char”是使用 FontVibe AI 创作的彩虹文字效果。绚丽的多彩虹色渐变文字特效，色彩过渡顺滑，棱镜般的光泽与欢快的多彩排版。

rendered as rainbow text effect — COLOR (mandatory): each individual letter must contain a complete ROYGBIV rainbow gradient top-to-bottom within itself — top=red, upper=orange, mid=yellow-green, lower=blue-indigo, bottom=violet. NOT one color per letter. NOT a gradient across the whole word. Every letter is its own complete rainbow. Full chroma Pride flag saturation — not pastel, not muted, not shifted to any single hue. Char' as rainbow candy balloon letters — each letter a fully inflated 3D sphere-surface balloon, ultra-glossy candy finish with brilliant white specular highlight sitting at the upper-left of each letterform curve. Every single letter contains a complete ROYGBIV gradient top-to-bottom within itself: top band saturated fire-engine red, transitioning through vivid orange, electric yellow, lush grass green, royal cobalt blue, deep indigo, ending at rich violet at the baseline — full chroma Pride flag saturation, zero pastel shift, zero muted tones. Background: golden hour outdoor birthday celebration — warm amber-peach gradient sky, soft bokeh clusters of colored party balloons (pink, gold, red, cobalt) floating out of focus in the background, loose confetti scatter of ROYGBIV paper pieces drifting through the air. Warm directional sunlight from upper-right casting soft rim glow on the inflated letter surfaces, intensifying the glossy candy sheen. Fairy string lights in the background dissolve into warm golden orbs of bokeh. The wet sheen on each balloon surface creates secondary reflections of the surrounding colorful scene, amplifying the maximum-joy, maximum-saturation energy — exactly like holding enormous rainbow balloon letters at a summer celebration at magic hour.