/* Cothink mobile header — a true transparent overlay: no white scroll bar, only contrast-aware wordmark and menu controls. */
@media(max-width:760px){
  .site-header,.site-header.is-scrolled{background:transparent!important;border-color:transparent!important;box-shadow:none!important;backdrop-filter:none!important;color:#fff;mix-blend-mode:difference}
  .site-header.is-scrolled{padding-top:19px;padding-bottom:19px}
  .site-header .wordmark,.site-header .menu-trigger{color:inherit!important}
  .site-header .menu-trigger-rules:before,.site-header .menu-trigger-rules:after{background:currentColor}
  .site-header:has(.menu-trigger[aria-expanded="true"]){mix-blend-mode:normal;color:var(--ink)}
}