Design a whimsical digital artwork showcasing animated liquid 3D letters that flow seamlessly into one another. The typography should be characterized by smooth curves and vibrant neon colors, creating a lively and energetic composition. Incorporate light reflections that highlight the glossy surfaces of the letters, enhancing the illusion of liquid. The background should feature abstract patterns that echo the fluid theme, using darker tones to make the neon colors pop. This piece should convey a sense of movement and playfulness, immersing viewers in a world of imaginative typography.