html{color-scheme:light dark}body{font:18px/1.6 system-ui,sans-serif;max-width:760px;margin:0 auto;padding:28px 20px;overflow-wrap:anywhere}h1{line-height:1.2;font-size:clamp(1.8rem,7vw,2.6rem)}h2{font-size:1.3rem;margin-top:2rem}a{color:light-dark(#144ca0,#95c4ff)}a:focus-visible{outline:3px solid currentColor;outline-offset:4px}nav{display:flex;gap:1.4rem;flex-wrap:wrap}footer{border-top:1px solid #888;margin-top:2rem;padding-top:1rem;font-size:.9rem}code{font-size:.9em}main{min-width:0}