Build a single-page GenoTrace landing site as a Vite vanilla JS app (index.html, style.css, main.js). Recreate the page exactly. Do not add extra sections, copy, pages, or libraries beyond what is specified. Stack Vite vanilla (HTML/CSS/JS modules). Load MP4Box from CDN: https://cdn.jsdelivr.net/npm/mp4box@0.5.2/dist/mp4box.all.min.js (classic script, not a module — it must expose global MP4Box and DataStream). main.js is type="module". Title: GenoTrace. Favicon: /vite.svg. OG/Twitter images: https://bolt.new/static/og_default.png, twitter card summary_large_image. Font Load exactly: https://db.onlinewebfonts.com/c/95cecf452d3208890088a5b4c19c7ecf?family=Helvetica+Neue+ME Body and buttons: font-family: 'Helvetica Neue ME', 'Helvetica Neue', Helvetica, Arial, sans-serif; CloudFront video (required, exact URL) https://d8j0ntlcm91z4.cloudfront.net/user_38xzZboKViGWJOttwIXH07lWA1P/hf_20260821_183659_804e0948-c701-4565-b56b-a99c78f9bfba.mp4 Video attributes: muted, playsinline, preload="auto". Never autoplay as a looping background video. It is scroll-scrubbed (paused; time driven by scroll). HTML structure (exact) Navbar (fixed) Inner max-width 1400px, height 72px, flex space-between, horizontal padding 48px. Logo left: text “GenoTrace” linking #. Center links (desktop): Testing, Traits, Science, Story — all #. Right CTA: “Begin Here” with classes btn btn--primary. Hamburger (3 spans .hamburger-line), aria-label="Toggle menu", aria-expanded="false". Hidden on desktop. Full-screen
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