/* Persistent navigation, with no divider beneath the header. */
:root{--site-header-height:110px}
.inner-page{--site-header-height:100px}
html{scroll-padding-top:calc(var(--site-header-height) + 16px)}
.site-header{position:fixed;top:0;left:0;z-index:40;height:var(--site-header-height);border-bottom:0;background:transparent;transition:background-color .25s ease}
.site-header.is-scrolled,.site-header:has(.main-nav.open){background:var(--navy)}
.inner-page .site-header{position:sticky;height:var(--site-header-height);background:var(--navy)}
.site-header a:focus-visible,.site-header button:focus-visible{outline-color:var(--paper)}
.skip{z-index:100}
.article-toc{top:calc(var(--site-header-height) + 24px)}
.brand-story.is-enhanced .story-sticky{top:var(--site-header-height);height:calc(100svh - var(--site-header-height))}
@media(max-width:950px){
  :root,.inner-page{--site-header-height:88px}
  .site-header .main-nav{top:100%;max-height:calc(100svh - var(--site-header-height));overflow-y:auto;overscroll-behavior:contain}
}
@media(max-width:650px){body:not(.inner-page){--site-header-height:84px}}
@media(prefers-reduced-motion:reduce){
  .site-header{transition:none}
  .brand-story.is-enhanced .story-sticky{position:static;height:auto}
}