Use this MotionSites background video as a looping website background asset. Title: Motion BG 55 Category: background License: 免费 Video URL: https://d8j0ntlcm91z4.cloudfront.net/user_38xzZboKViGWJOttwIXH07lWA1P/hf_20260423_161253_c72b1869-400f-45ed-ac0c-52f68c2ed5bd.mp4 Local thumbnail: thumbnails/b7aa288a-1d98-41fc-ad1f-e7cf59d142cc.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.