ふわふわした3Dレインボー都市アイコン（柔らかなグレー背景）

Transform a simple flat vector icon of rainbow colors city into a soft, 3D fluffy object. The shape is fully covered in fur, with hyperrealistic hair texture and soft shadows. The object is centered on a clean, light gray background and floats gently in space. The style is surreal, tactile, and modern, evoking a sense of comfort and playfulness. Studio lighting, high-resolution render.