:root{color-scheme:light;--ink:#142d38;--muted:#435d68;--accent:#075f68;--line:#c6d9dc}*{box-sizing:border-box}html{scroll-behavior:auto}body{margin:0;background:#f6faf9;color:var(--ink);font:1.125rem/1.75 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:var(--accent);text-underline-offset:.2em;overflow-wrap:anywhere}a:focus-visible,summary:focus-visible{outline:3px solid #097e87;outline-offset:4px}header,main,footer{max-width:78ch;margin:auto;padding:1.5rem}header{border-bottom:1px solid var(--line)}.brand{font-size:1.3rem;font-weight:800;text-decoration:none}.brand span{font-size:.85rem;color:var(--muted)}nav{display:flex;gap:.6rem 1.5rem;flex-wrap:wrap;margin-top:1rem}h1,h2,h3{line-height:1.25;overflow-wrap:anywhere}h1{font-size:clamp(2rem,6vw,3.2rem);letter-spacing:-.035em;margin:.5rem 0 1rem}h2{margin-top:2.25rem}h3{margin-top:1.5rem}.eyebrow{font-size:.8rem;text-transform:uppercase;letter-spacing:.09em;color:var(--muted)}section,article{min-width:0}ul,ol{padding-left:1.5rem}li{margin:.5rem 0}.catalog{list-style:none;padding:0}.catalog a{display:block;padding:.8rem 0;border-bottom:1px solid var(--line);text-decoration:none}.catalog small{display:block;color:var(--muted);font-weight:400}.example,.check,.equation{border-left:3px solid #76a9ac;padding:.75rem 1rem;margin:1.5rem 0;background:white}details{padding:.6rem 0}summary{cursor:pointer;font-weight:650}.katex-display{max-width:100%;overflow-x:auto;overflow-y:hidden;padding:.5rem 0}.plain-equation{font-weight:700;overflow-wrap:anywhere}.meaning{color:var(--muted);font-size:1rem}.skip{position:absolute;left:1rem;top:-5rem;background:white;padding:.5rem}.skip:focus{top:.5rem}footer{font-size:.9rem;color:var(--muted);border-top:1px solid var(--line)}@media(max-width:400px){header,main,footer{padding:1rem}body{font-size:1.05rem}.example,.check,.equation{padding:.5rem .75rem}}@media print{body{background:white;color:black}header nav,.skip{display:none}a{color:black}details{display:block}.katex-display{overflow:visible}}