“SWEET 16”是使用 FontVibe AI 创作的生日文字效果。彩虹条纹的圆胖大写字母带清晰白描边，四周是彩纸屑和气球簇，背景是饱和的粉色到青绿派对渐变。

a bright, joyful birthday celebration scene. BACKGROUND: light and airy — soft white, warm cream, or a gentle pastel wash (blush, mint, sky-blue, buttercream) with a subtle luminous gradient and soft party bokeh; bright and cheerful, never dark, never muddy. Soft daylight-bright illumination with a gentle warm lift, colors kept clean and fresh. ATMOSPHERE (always): a lively but tasteful scatter of multicolor confetti and a few clustered balloons framing the composition, light glints and soft sparkle — festive and happy, with clear breathing room around the text so it never looks cluttered. LETTERFORM COLOR: when the chosen font defines its own color keep it; otherwise cheerful saturated party colors with a clear hierarchy — one or two dominant hues plus accents, never a muddy single tone and never a garish rainbow smeared over every letter. GROUND: no dark stage — the text floats in a bright celebratory space. LETTERFORM PRIORITY: when the chosen font carries its own treatment (balloon, bubble, foil, script, sticker), that font treatment takes absolute priority and owns the letters; this style governs only the bright party light, confetti, balloons and palette — never the letter shapes. FALLBACK MATERIAL: if the font carries no material of its own, render the letters as clean glossy party lettering in one or two cheerful saturated colors with a soft highlight on the bright confetti background, so the happy birthday energy always reads. Render the exact text provided, with no extra or altered words. 'SWEET 16' in bold glossy balloon-letter lettering used as a wide birthday header design, spanning a 16:9 bright pastel party background with confetti and coordinated balloon accents framing the edges, warm bokeh. High-impact festive header. 16:9 horizontal.