“SOFIA HAPPY BIRTHDAY”是使用 FontVibe AI 创作的3D 立体粗体文字效果。厚重的方块大写字母带深度挤出，每个字母一种亮面糖果色，顶光让高光滚过圆润边角，彩色倒影落在地面上。

Create a finished 3:4 vertical birthday photo-backdrop design. Render exactly these words, spelled and cased exactly: “SOFIA” as the dominant headline, with “HAPPY BIRTHDAY” as a smaller supporting line above it. Do not add any other text, numbers, or lettering. Make “SOFIA” enormous and instantly readable, centered across the middle of the canvas. Build each glyph as a massive, chunky 3D block letter with consistent extrusion depth around 55% of its height and hard, sharp face-to-side edges. Give adjacent letters different vivid hue families: S cherry red, O electric blue, F sunshine yellow, I lime green, A hot orange. Finish each front face in ultra-glossy candy lacquer with natural bright specular highlights graduating into saturated color; use darker versions of each hue on the extrusion sides. The smaller “HAPPY BIRTHDAY” line uses the same 3D candy-lacquer treatment, with clearly varied colors on neighboring letters. Use a minimal seamless deep-navy studio backdrop and reflective dark floor. Strong directional key light from upper left; crisp, long cast shadows extend diagonally at 45 degrees, roughly half the letter height. Keep the scene uncluttered so the wording reads clearly from across a room and leaves a central photo area unobstructed. Add small, glossy 3D balloon clusters at the lower left and lower right edges, plus a compact colorful birthday cake with wrapped gifts centered near the bottom, all secondary to the lettering. Professional 3D motion-graphics rendering, clean silhouette edges, sharp focus, high contrast, polished reflections. No borders, no extra props, no watermarks.