The "Noting ever leaves your device" text I think is an "eyebrow", a line of text above the header.

I only learned about "eyebrows" in the past few months when Claude et al insisted on adding them to everything. It's the short line of text above the first header, usually in small all-caps.

LLMs default to this component hierarchy (eyebrow -> h1 -> lead paragraph) because Tailwind landing page templates heavily feature it. Simon's tip prevents that generic template footprint.