abstract flow

Use this MotionSites background video as a looping website background asset.
Title: Abstract Flow
Category: background
License: 免费
Video URL: https://d8j0ntlcm91z4.cloudfront.net/user_38xzZboKViGWJOttwIXH07lWA1P/hf_20260331_074327_a4d6275d-82d9-4c83-bfbe-f1fb2213c17c.mp4
Local thumbnail: thumbnails/ccefa09f-f50f-40f6-ab3d-5892667c4976.jpg
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.