:root{--paper:#f6f3eb;--ink:#111827;--muted:#667085;--line:#d8d3ca;--blue:#3558d8;--cyan:#1d8ea7;--amber:#c9882b;--max:1040px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.72 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{color:var(--blue)}img{max-width:100%;display:block}.wrap{width:min(var(--max),calc(100% - 34px));margin:auto}
header{position:sticky;top:0;z-index:20;background:rgba(246,243,235,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{min-height:58px;display:flex;align-items:center;justify-content:space-between;gap:20px}.nav a{text-decoration:none;font-size:13px;font-weight:750;color:var(--ink)}.nav div{display:flex;gap:16px}
.hero{padding:72px 0 48px}.eyebrow{font-size:10px;font-weight:850;letter-spacing:.15em;color:var(--blue);text-transform:uppercase}.hero h1{max-width:880px;margin:12px 0 18px;font:700 clamp(44px,7vw,78px)/.98 Georgia,serif;letter-spacing:-.045em}.deck{max-width:780px;font:21px/1.52 Georgia,serif;color:#29364a}
.breadcrumbs{padding-top:18px;font-size:11px;color:var(--muted)}.breadcrumbs a{color:var(--muted);text-decoration:none}
.toc{display:grid;grid-template-columns:repeat(2,1fr);gap:9px;margin:28px 0}.toc a{padding:13px 14px;background:#fff;border:1px solid var(--line);border-radius:12px;text-decoration:none;font-weight:700}
.article{padding-bottom:74px}.article section{padding:28px 0;border-top:1px solid var(--line)}.article h2{font:700 38px/1.05 Georgia,serif;letter-spacing:-.03em;margin:0 0 14px}.article h3{font:700 25px/1.12 Georgia,serif;margin:22px 0 9px}.article p{max-width:820px}.equation{overflow:auto;margin:18px 0;padding:18px;border:1px solid #cad5ff;background:#edf2ff;border-radius:13px;font:22px/1.4 Georgia,serif;color:#2749b5}
.status{margin:18px 0;padding:15px 17px;border-left:4px solid var(--amber);background:#fff1d8}.status b{display:block;margin-bottom:4px}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}.card{padding:18px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.78)}.card h3{margin-top:0}.card p{font-size:14px;color:var(--muted)}
figure{margin:28px 0;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff}figure img{width:100%;height:auto;object-fit:contain}figcaption{padding:10px 13px;font-size:12px;color:var(--muted);border-top:1px solid var(--line)}
.next{margin-top:32px;padding:20px;border-radius:16px;background:#111827;color:#fff;display:flex;justify-content:space-between;gap:18px;align-items:center}.next a{color:#fff;font-weight:800}
.refs li{margin:8px 0}.meta{font-size:12px;color:var(--muted);margin-top:16px}
footer{border-top:1px solid var(--line);padding:24px 0 34px;font-size:12px;color:var(--muted)}
@media(max-width:760px){.nav div{display:none}.toc,.grid{grid-template-columns:1fr}.hero{padding-top:48px}.article h2{font-size:32px}.next{align-items:flex-start;flex-direction:column}}