Can AI replace Webflow?

Build me a block-based marketing site generator to replace Webflow, for my own sites. Requirements:

- An Eleventy static site where a page is a YAML file listing blocks: hero, feature
  grid, testimonial, pricing table, FAQ, CTA, footer. Each block is a Nunjucks
  partial; building a page means editing YAML, not HTML.
- CMS collections without a CMS: blog posts and case studies as Markdown with front
  matter, listing and detail pages generated at build time.
- One design-tokens file (CSS custom properties for colors, type scale, spacing) so
  a restyle touches exactly one file.
- Responsive by default: every block works at 360px and 1280px, images via
  @11ty/eleventy-img.
- Forms POST to a small Express handler that emails me via SMTP creds in .env.
- Build to dist/, deploy with rsync to my VPS behind Caddy. Sitemap and per-page
  meta/OG tags generated at build.
- No accounts, no telemetry, content lives in git.
- Out of scope: a visual drag-and-drop designer and client handoff. If I truly need
  visual editing, self-host Webstudio instead of building an editor.
- README: block YAML reference with one full example page, DNS + Caddy snippet.