:root{--x-ui:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--x-display:var(--x-ui)}body{font-size:15px;line-height:1.55}h1,h2,h3{font-family:var(--x-display);letter-spacing:-.035em}h1{font-weight:750}