/* Reserve viewport height via CSS so hero sections don't render collapsed
   and then snap to full height once main.js's jQuery .js-fullheight handler
   runs on load — this was the site's dominant layout-shift (CLS ~0.4). */
.js-fullheight {
  min-height: 100vh;
}
@supports (min-height: 100dvh) {
  .js-fullheight {
    min-height: 100dvh;
  }
}