黑白棱镜运动

Use this MotionSites background video as a looping website background asset.
Title: Motion Background 2
Category: background
License: 免费
Video URL: https://stream.mux.com/jPyJ2YM6Nlly7U6EyfxM01tz4D4uPE3gyJ4PYuvY62Wg.m3u8
Local thumbnail: thumbnails/1e399c39-974a-4994-b2be-b3c40aaaa9bc.png
Implementation requirements:
- Render the video as a muted, autoplay, looped, playsInline background layer.
- Use object-fit: cover and keep the focal motion visible on desktop and mobile.
- Add a readable overlay only when foreground text needs contrast.
- Keep controls hidden for decorative background use, and provide a poster/thumbnail fallback.
- Respect the MotionSites authorization state before using this asset in a commercial project.