Building an SEO landing page with Claude Code in one session

I had a business registration number, a service idea, and zero landing page. Four hours later, I had a page in production with SEO, a contact form, a chatbox, and animated SVG circles. Here's exactly how it happened. The need I wanted to launch a freelance automation service — custom scripts, API integrations, scraping, Excel macros. The kind of thing you can pitch in one sentence but takes real trust to sell. Which means: a proper page, not a GitHub README or a Notion doc sent in a DM. The constraints were clear from the start: No WordPress, no page builder — I write code for a living Subfolder of the existing site (/automatisation/), not a new domain Pure PHP, zero frontend framework Contact form that actually sends emails (PHPMailer, already wired on the blog) SEO-ready from day one The "zero frontend framework" constraint is worth explaining. For a landing page with one purpose — convert visitors into quote requests — React or Vue would be absurd. Server-rendered PHP with a custom