I need a short, polished recreation of the Netflix intro—just the iconic red “N” animating on a black background—built only with HTML, CSS and vanilla JavaScript. The look has to stay simple and clean, without any flashy particles or extra visual tricks, and it should run between one and three seconds from start to finish. No audio cues are required. Please code it so the effect plays automatically on page load and loops smoothly if the user refreshes. I’ll want the full source (HTML, external CSS, JS) plus any brief setup notes so I can drop the files straight into my project folder and see the exact same result in a modern browser.