Use this MotionSites background video as a looping website background asset. Title: Solar Flare Category: background License: 免费 Video URL: https://d8j0ntlcm91z4.cloudfront.net/user_38xzZboKViGWJOttwIXH07lWA1P/hf_20260325_132944_a0d124bb-eaa1-4082-aa30-2310efb42b4b.mp4 Local thumbnail: thumbnails/5b00c399-5aa3-4080-a3ec-dc78796b2db9.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.