/* One header geometry for Home, Memory, Games, the library and waitlist. */
html{scrollbar-gutter:stable}
/* The slideshow previously hid the root scrollbar, which also removed its
   reserved gutter. Keep native root scrollbar sizing consistent on every page. */
html.alt-slide{scrollbar-width:auto}
html.alt-slide::-webkit-scrollbar{display:block}
.site-header.site-header{box-sizing:border-box;position:relative;z-index:10;display:flex;align-items:center;justify-content:space-between;flex:none;flex-wrap:nowrap;width:100%;max-width:none;height:80px;min-height:80px;margin:0;padding:17px 40px!important;gap:24px!important;border:0;border-bottom:1px solid #ffffff1a;background:transparent;font:400 13px/20px system-ui,-apple-system,"Segoe UI",sans-serif;animation:none}
.site-header.site-header .site-header-brand{display:inline-flex;align-items:center;justify-content:flex-start;flex:none;min-height:44px;margin:0;padding:0;text-decoration:none;line-height:1}
.site-header.site-header .site-header-brand img{display:block;flex:none;width:auto;height:34px;max-width:none;margin:0;object-fit:contain}
.site-header.site-header .site-header-nav{display:flex;align-items:center;justify-content:flex-end;flex-wrap:nowrap;gap:16px!important;margin:0;padding:0;font:inherit!important}
.site-header.site-header .site-header-nav a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;margin:0;padding:0;color:#b9c7c0;font:inherit;text-decoration:none;white-space:nowrap;transition:color .15s ease}
.site-header.site-header .site-header-nav a:hover,.site-header.site-header .site-header-nav a[aria-current]{color:#eef5f1}
.site-header.site-header .site-header-separator{color:#779286;line-height:20px;user-select:none}
.site-header.site-header a:focus-visible{outline:2px solid #bddbc9;outline-offset:4px;border-radius:3px;box-shadow:none}
/* Home's slide shell has its own horizontal rail offset. Keep only its header
   outside that clipped shell; the equal-height spacer preserves chapter sizing. */
.site-header.site-header--home{position:absolute;inset:0 0 auto;background:#1f2432}
.site-header-space{display:block;box-sizing:border-box;height:80px;min-height:80px;flex:0 0 80px;pointer-events:none}
@media(max-width:700px){.site-header.site-header{padding-inline:20px!important;gap:20px!important}.site-header.site-header .site-header-nav{gap:14px!important}}
@media(prefers-reduced-motion:reduce){.site-header.site-header .site-header-nav a{transition:none}}