Imagine the launch page for GPT-6.2 Astra, a fictional AI model. Use GPT Image 2.6 to design it first: a full-page concept image, an animated hero loop, animated icons and a loading state as GIFs. Then rebuild the design as a real, working single page in HTML and CSS. Recreate the animations in code instead of dropping the GIFs onto the page. Convert any GIF you still need to a looping MP4 or WebP. Put this note in the footer: "Fictional concept. Not a real product or an OpenAI page." Don't use the OpenAI logo. Deliver index.html and its assets, plus the generated design images.