/* v340 — definitive mobile navigation behavior.
   The navigation is fixed to the viewport. The prelaunch banner remains a
   separate normal-flow element and scrolls away with the page. */
@media (max-width: 850px) {
  html, body { overflow-x: clip !important; }

  body > .site-header,
  .site-header {
    position: fixed !important;
    inset: 4px 0 auto 0 !important;
    top: 4px !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    margin: 0 !important;
    z-index: 2147483000 !important;
    transform: translateZ(0) !important;
    will-change: transform !important;
  }

  .site-header .nav-shell {
    position: relative !important;
    z-index: 1 !important;
  }

  body > .prelaunch-banner,
  .prelaunch-banner {
    position: relative !important;
    inset: auto !important;
    top: auto !important;
    left: auto !important;
    right: auto !important;
    margin-top: 82px !important;
    z-index: 20 !important;
    transform: none !important;
    will-change: auto !important;
  }

  .page-contact #stay-connected {
    scroll-margin-top: 82px !important;
  }
}