crystal bloom（a22b86bc）

Use this MotionSites background video as a looping website background asset.
Title: Crystal Bloom
Category: background
License: 付费
Video URL: https://d8j0ntlcm91z4.cloudfront.net/user_38xzZboKViGWJOttwIXH07lWA1P/hf_20260325_120549_0cd82c36-56b3-4dd9-b190-069cfc3a623f.mp4
Local thumbnail: thumbnails/a22b86bc-1203-4f85-af56-87c036f12f0a.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.