Seedance 2.0 Fast Prompt - Lluvia tras la ventana inmóvil

Preserve the original image and composition exactly. Static locked camera, no camera movement. Heavy rain falls naturally only outside the windows, with subtle rain streaks flowing down the exterior glass. The room, furniture, books, lights, and all indoor objects remain completely still. No people, no new objects, no structural changes. Audio: rich and realistic rain sound outside the window, steady rainfall hitting the glass and rooftop, subtle distant city ambience. No thunder, no music, no voices.