Animate this ultra-realistic steampunk retro-modern cityscape into an 8-second cinematic video. The giant gears on towers rotate slowly, steam rises naturally from vents and pipes, and glowing neon retro signs flicker gently. Warm golden street lamps cast moving light and shadows across cobblestone streets. Fog drifts realistically through the alleys, adding depth. The camera moves in a smooth cinematic pan forward, revealing more of the skyline with clocktowers and mechanical structures. Audio: epic cinematic soundtrack with a mix of orchestral and retro synth tones, layered with mechanical gear sounds, hissing steam, and distant city ambience.