:root{--ink:#17212b;--muted:#59636e;--line:#d9e0e6;--accent:#205c74;--paper:#fff;--soft:#f5f8fa}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font:17px/1.65 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}main{max-width:850px;margin:auto;padding:32px 24px 80px}nav{font-size:14px;color:var(--muted);margin-bottom:48px}a{color:var(--accent)}header{margin-bottom:40px}.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:700;color:var(--accent)}h1{font-size:clamp(34px,6vw,58px);line-height:1.05;letter-spacing:-.03em;margin:.2em 0}.dek{font-size:20px;color:var(--muted);max-width:70ch}h2{font-size:26px;line-height:1.2;margin-top:44px;border-top:1px solid var(--line);padding-top:28px}p,li{max-width:72ch}li{margin:.4em 0}@media print{nav{display:none}body{font-size:11pt}main{max-width:none;padding:0}a{color:inherit;text-decoration:none}h1{font-size:28pt}h2{break-after:avoid}section{break-inside:auto}}

.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:white;padding:8px;z-index:100}

/* RC11 keyboard focus refinement */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #1d70b8;outline-offset:2px}
.skip:focus-visible{left:12px;top:12px;z-index:100;background:#fff;padding:8px 12px;border-radius:6px}

.site-header{position:sticky;top:0;z-index:10;background:#fff;border-bottom:1px solid var(--line)}.site-header .nav{max-width:1120px;margin:auto;display:flex;gap:18px;align-items:center;padding:14px 22px;flex-wrap:wrap}.site-header .brand{font-weight:750;text-decoration:none;color:var(--ink);margin-right:auto}.site-header .nav a{font-size:15px;font-weight:600;text-decoration:none}.site-header .badge{font-size:.78rem;background:#eaf4ed;color:#285b36;border:1px solid #b9d7c1;border-radius:999px;padding:3px 8px}.article-actions{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 10px}.article-actions .btn{font:600 14px/1.2 system-ui,-apple-system,Segoe UI,sans-serif}.citation-box{background:var(--soft);border:1px solid var(--line);padding:12px 14px;border-radius:8px;margin:8px 0 24px}.article-next p{max-width:72ch}.footer{margin-top:70px}.footer h2{border:0;padding:0;margin:0 0 8px;font-size:16px}.footer a{display:block;margin:5px 0}@media(max-width:620px){.site-header{position:static}.site-header .nav{gap:10px}.article-actions .btn{flex:1;text-align:center}}@media print{.site-header,.article-actions,.citation-box,.footer{display:none!important}}