:root{--ink:#1c2425;--muted:#626a70;--green:#0b7a5c;--purple:#63508e;--line:#e2e7e7;--soft:#f5f8f7;--lavender:#f5f3fa;--maxw:1060px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:22px}body{margin:0;color:var(--ink);background:#fff;font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}a{color:var(--green);text-decoration:underline;text-underline-offset:3px}a:hover{color:var(--purple)}a:focus-visible{outline:3px solid var(--purple);outline-offset:5px}.wrap{width:min(var(--maxw),100% - 40px);margin-inline:auto}.skip-link{position:absolute;left:15px;top:-80px;background:#fff;padding:10px;z-index:10}.skip-link:focus{top:10px}.site-nav{border-bottom:1px solid var(--line);background:#fff}.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-block:18px}.brand{font:700 1.25rem Georgia,"Times New Roman",serif;text-decoration:none;white-space:nowrap}.brand span{color:var(--purple)}.nav-links{display:flex;flex-wrap:wrap;gap:9px 22px}.nav-links a{color:var(--muted);font-size:.9rem;text-decoration:none}.nav-links a[aria-current=page]{color:var(--green);font-weight:700}.page-hero{padding:64px 0 38px;border-bottom:1px solid var(--line)}.eyebrow{margin:0 0 12px;color:var(--green);font-size:.75rem;font-weight:750;letter-spacing:.13em;text-transform:uppercase}h1,h2,h3{font-family:Georgia,"Times New Roman",serif;line-height:1.25}h1{font-size:clamp(2.1rem,5vw,3.25rem);margin:0 0 20px;max-width:950px}h2{font-size:1.8rem;margin:0 0 16px}h3{font-size:1.2rem;margin:0 0 10px}.lede{font-size:1.1rem;max-width:800px;color:var(--muted);margin:0}.stat-line{display:flex;flex-wrap:wrap;gap:10px 28px;margin-top:28px;color:var(--purple);font-size:.95rem;font-weight:650}.section{padding:38px 0;border-bottom:1px solid var(--line)}.section-intro{max-width:850px;color:var(--muted);margin:0 0 22px}.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.card{border:1px solid var(--line);border-radius:12px;padding:25px;background:var(--soft)}.card p{margin:0 0 12px}.card p:last-child{margin-bottom:0}.card .mechanism{color:var(--muted);font-size:.93rem}.number{display:block;font-size:.73rem;letter-spacing:.1em;color:var(--green);font-weight:700;margin-bottom:10px}.pill{display:inline-block;padding:4px 12px;border-radius:20px;background:#e9f4ef;color:var(--green);font-size:.8rem;font-weight:650}.callout{border-left:3px solid var(--purple);padding:18px 22px;background:var(--lavender);border-radius:0 8px 8px 0;margin:22px 0}.callout p{margin:0}.callout p+p{margin-top:12px}.table-wrap{overflow:auto;margin:20px 0;border:1px solid var(--line);border-radius:8px}table{width:100%;border-collapse:collapse;font-size:.94rem}th,td{padding:14px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}th{background:var(--soft);font-size:.84rem;letter-spacing:.01em}tr:last-child td{border-bottom:none}td:first-child{font-weight:600}code{font-family:Consolas,Menlo,monospace;font-size:.9em}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--soft);padding:24px;border:1px solid var(--line);border-radius:10px;font-size:.86rem;line-height:1.7}.authors{font-size:1.06rem;line-height:2;margin:22px 0 10px;max-width:900px}.author-note,.small{font-size:.88rem;color:var(--muted)}.toc{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:.9rem;margin-top:25px}.list{padding-left:22px}.list li+li{margin-top:7px}.footer{padding:30px 0 40px;font-size:.86rem;color:var(--muted)}.footer p{margin:5px 0}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.button{display:inline-block;border:1px solid var(--line);border-radius:25px;padding:9px 20px;text-decoration:none;font-size:.93rem;background:#fff}.figure img{width:100%;height:auto;display:block}.figure figcaption{font-size:.85rem;color:var(--muted);margin-top:10px}@media(max-width:650px){.wrap{width:calc(100% - 32px)}.nav-inner{display:block}.nav-links{margin-top:12px;gap:7px 17px}.page-hero{padding:38px 0 30px}.section{padding:30px 0}.cards{grid-template-columns:1fr}.card{padding:21px}.stat-line{gap:8px 18px}th,td{padding:11px 12px}.table-wrap table{min-width:560px}.authors{font-size:1rem}pre{padding:16px;font-size:.8rem}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}