rdjpublishers/rdjpublishers.github.io — reverse-engineered prompt

Build me a simple static website for free online tools, small games, and everyday utilities that students and regular users can use in the browser. I want it to feel clean, fast, and easy to use on phones and laptops, with a homepage that introduces the site and clearly shows the available tools and games, plus a basic about or contact section and a simple sitemap page. Keep it lightweight with plain HTML, CSS, and JavaScript, and make it easy for me to add more tools later without reworking everything.

Please make it feel polished but straightforward, with a nice logo area, clear navigation, and basic SEO essentials like page titles, descriptions, robots, sitemap, and support for a custom domain since I may host it on GitHub Pages. If ads are included, keep them unobtrusive. Use placeholder content where needed, but make the site feel real and ready to publish. Look up current best practices online if you need to.