:root{--navigation-height:100px}
html{scroll-padding-top:calc(var(--navigation-height) + 20px)}
body>header{position:sticky;top:0;z-index:50;background:rgb(12 13 18 / .92);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:0 10px 30px #00000018}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}