:root{color-scheme:light;--ink:#102d36;--teal:#087f8c;--line:#d9e3e7}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:#f7f8fa;color:var(--ink);font:16px/1.75 "Segoe UI",Arial,sans-serif}a{color:var(--teal);text-underline-offset:4px}a:focus-visible{outline:3px solid #cd8d2a;outline-offset:5px}header{position:sticky;top:0;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:18px max(24px,calc((100% - 920px)/2));background:var(--ink);z-index:3}header a{color:white;font-size:14px}header nav{display:flex;gap:22px}main{max-width:920px;margin:auto;padding:60px 28px}.cover{border-bottom:1px solid var(--line);padding-bottom:36px}.icon{float:right;border-radius:14px}.eyebrow{font:12px Consolas,monospace;letter-spacing:1.3px;color:var(--teal);margin-bottom:20px}h1{font-size:44px;line-height:1.15;letter-spacing:-1.2px;max-width:720px;margin:18px 0 24px}.intro{font-size:20px;line-height:1.6}.caption,figcaption{font-size:13px;color:#526170}.toc{padding:28px;margin:35px 0;background:#edf3f4;border:1px solid var(--line);border-radius:8px}.toc ol{columns:2;column-gap:35px;padding-left:24px}.toc li{break-inside:avoid;padding:4px 0}h2{font-size:27px;line-height:1.3;margin:0 0 22px}h2 span{font:14px Consolas,monospace;color:var(--teal);margin-right:10px}section{padding:35px 0;border-bottom:1px solid var(--line)}p{margin:0 0 18px}figure{margin:26px 0 10px}figure img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:7px}figcaption{margin-top:10px}footer{font-size:12px;color:#526170;margin-top:35px}@media(max-width:600px){header{padding:13px 18px;gap:14px}header nav{gap:12px}header a{font-size:12px}main{padding:35px 20px}h1{font-size:34px}.intro{font-size:18px}.toc{padding:22px}.toc ol{columns:1}h2{font-size:25px}.icon{width:52px;height:52px}.eyebrow{font-size:10px;max-width:200px}section{padding:28px 0}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{header,.toc{display:none}body{background:white;font-size:11pt}main{padding:0;max-width:none}h1{font-size:30pt}h2{font-size:18pt;break-after:avoid}section{break-inside:auto}figure{break-inside:avoid}a{color:inherit}footer{margin-top:20pt}}