Use this MotionSites background video as a looping website background asset. Title: Motion Background 11 Category: background License: 免费 Video URL: https://d8j0ntlcm91z4.cloudfront.net/user_38xzZboKViGWJOttwIXH07lWA1P/hf_20260525_070034_60e5670b-6bb0-402b-a6c1-c9a8c05ae3a4.mp4 Local thumbnail: thumbnails/49c544aa-e904-471e-ad7d-4fbee6ba8709.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.