“HAPPY BIRTHDAY DAD WITH LOVE”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。

Create a finished vertical birthday card, 4:5 composition, with the exact rendered text: "HAPPY" / "BIRTHDAY" / "DAD" / "WITH LOVE". Bright saturated party-card composition, no devices and no extra words. Background: luminous rich candy gradient flowing from hot pink at upper left through tangerine in the center to turquoise and violet at lower right, with warm bokeh and fine bright light streaks. Typography hierarchy: "HAPPY" is a small top-center kicker; "BIRTHDAY" is the dominant central word, spanning nearly the full width; "DAD" sits directly below at large scale as the second focal line; "WITH LOVE" is a small centered closing line near the bottom. Build "HAPPY", "BIRTHDAY", and "DAD" as bespoke bold modern brush-script lettering: connected fast hand-painted flow, loaded round-brush strokes, heavy confident downstrokes, tapered upstrokes, slightly rough dry-brush drag at lifted ends, varied letter scale and a lively bouncing baseline. Render the lettering in punchy multi-color brush ink—electric yellow, coral red, cobalt blue, and violet—with a clean thick white contour, glossy pinpoint highlights, and a soft navy drop shadow for separation. "WITH LOVE" is compact white uppercase sans lettering with wide spacing. Place generous balloon clusters around the outer frame: glossy red, yellow, turquoise, violet, and orange balloons at upper-left, upper-right, and lower side corners, with thin curling ribbons directed outward. A dense burst of multicolor paper confetti, metallic streamers, tiny star sparkles, and bright glints surrounds the lettering without crossing its faces. Keep the center crisp and fully legible. Bright frontal party lighting, clean saturated contrast, polished greeting-card finish, sharp edges, high-resolution print artwork.