/* Turtle Luck nav fix — apple.com-style frosted sticky header.
   Load AFTER archive.*.css (last stylesheet in <head>). Applies to all pages (header.site.gn). */
header.site,header.site.gn{position:-webkit-sticky;position:sticky;top:0;z-index:9999;isolation:isolate;
  background:#fff;border-bottom:1px solid rgba(0,0,0,.08)!important}
@supports ((-webkit-backdrop-filter:blur(1px)) or (backdrop-filter:blur(1px))){
  header.site,header.site.gn{background:rgba(255,255,255,.8);
    -webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px)}
}
/* remove the transparent gradient "fade" that let content show through */
header.site.gn:after{content:none;display:none}
/* mobile/desktop dropdown menu: solid, above content */
header.site.gn .gn-drop{background:#fff;z-index:9999}
/* sticky sub-nav sits below header */
.side-nav{z-index:10}
/* motion reveal (tl-motion.css): transformed sections form stacking contexts; pin them below header */
html.tl-m [data-tl]{position:relative;z-index:0}