Thunderhead
A night storm hero for a grid-battery company: a raymarched thunderhead lit from inside by branching lightning, under a slow marquee.
The prompt
Build a landing page for **Anvil Storage**, a company that builds four-hour grid batteries on the edge of a wind belt. Use plain HTML, CSS and JavaScript in one file. The hero background is not an image or a video. It is a full-screen WebGL2 fragment shader drawn into a `<canvas>` and driven by the JavaScript below. The page uses no image, video or texture files at all. Paste the stylesheet, the hero markup, both…
The rest of this prompt, including the full shader source, unlocks with access.
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