Build a waitlist landing page with a real signup form

Build a single-page marketing site for Recap, an AI meeting-notes tool that writes the follow-up email for you. The goal is to collect email signups for a waitlist before launch.

Page sections, in order:
1. Hero — headline, one-line subheading, and the signup form (button text: Get early access) above the fold.
2. How it works — three short steps with icons.
3. Social proof — a row of three placeholder testimonial quotes with name and role.
4. FAQ — four questions in a collapsible accordion.
5. Footer — signup form repeated, plus a contact address: hello@getrecap.com.

Signup form requirements — this is the important part:
- Fields: email (required), and optionally name.
- Bolt.new has no database or auth of its own, so wire this form directly to Supabase: create a waitlist_signups table (columns: id, email, name, created_at, source) and insert a row on submit using the Supabase JS client.
- Show inline validation for an invalid email format, and a success state (for example, "You're on the list") after a successful insert, without a full page reload.
- Handle the duplicate-email case — a unique constraint on email — by showing a friendly "you're already signed up" message instead of a raw database error.
- Do not build any other auth. This page only ever needs a one-way form submission, never a login.

Style: dark background, one accent lime-green color, big confident type. Fully responsive, single page, no unused component libraries.