Use this MotionSites background video as a looping website background asset. Title: Thermal Glow Category: background License: 免费 Video URL: https://d8j0ntlcm91z4.cloudfront.net/user_38xzZboKViGWJOttwIXH07lWA1P/hf_20260324_151826_c7218672-6e92-402c-9e45-f1e0f454bdc4.mp4 Local thumbnail: thumbnails/6fc06197-eac1-49fe-a89a-50c71e325df2.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.