[Quality and Technical Specs] Generate a 15s, 16:9 AI video template titled "Rain Rooftop Duel Standoff". Use rainy rooftop action thriller with non-graphic cinematic stunt choreography. The output must be polished, stable, social-video-ready, and visually coherent. [Hard Settings] 你的元素 1 is the sole visual identity reference. Preserve the referenced subj
