矢量图转8K超逼真3D毛绒公仔物理模拟

构建一个系统提示，将 2D 矢量图转换为 8K 3D 毛绒玩具，模拟真实的织物和填充物理效果，并确保精确的形状和颜色保真度。

Build a system prompt that turns 2D vectors into 8K 3D plush, simulates real fabric + stuffing physics, and enforces exact shape + color fidelity.