I need a single-page, full-screen HTML splash screen that opens with an “auction view” feel. The page should immediately immerse visitors in the atmosphere of a live auction by centering on an engaging auction display—think bold item imagery, a clear lot title, and space for real-time details such as current bid or a countdown (I can wire in live data later, so leave placeholder IDs/classes). The splash screen must be pure front-end: clean HTML5, modern CSS (Flexbox/Grid for easy centering on any device), and concise JavaScript for the dynamic bits. No external frameworks are required—I prefer lightweight, vanilla code so I can drop the files straight into my existing stack. Please deliver: • index.html with semantic markup and well-named hooks • style.css with responsive rules that keep everything perfectly centred on mobile, tablet, and desktop • main.js (or inline script) that animates the auction display placeholder so I can swap it for live data later A quick GIF mock or embedded stock image in the first draft is helpful for layout preview, but final assets should be easy to swap. Once compiled, the page should open instantly, cover the viewport with no scrolling, and close cleanly when I route users to the main site.