:root{--paper:#FDFDFC;--paper-2:#F1F0EA;--ink:#141413;--grey-6:#505544;--grey-5:#6C6E6B;--grey-3:#8E9291;--orange:#FF5E1F;--orange-ink:#C8420A;--line:rgba(20,20,19,.14);--f-sans:"Hanken Grotesk","Helvetica Neue",Arial,sans-serif;--f-serif:"Source Serif 4",Georgia,serif;--f-mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;--gutter:clamp(16px,3.6vw,48px)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-sans);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit}
.wrap{max-width:1180px;margin-inline:auto;padding-inline:var(--gutter)}
.nav{position:sticky;top:0;background:rgba(253,253,252,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);z-index:5}
.nav .wrap{display:flex;justify-content:space-between;align-items:center;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:600;font-size:12px;letter-spacing:.18em;text-transform:uppercase;line-height:1}
.brand span{display:grid;gap:3px}
.brand em{font-style:normal;font-weight:500;font-size:9.5px;letter-spacing:.22em;color:var(--grey-5)}
.brand svg{width:36px;height:36px;color:var(--ink)}
.back{font-size:14px;font-weight:600;text-decoration:none;color:var(--grey-5)}.back:hover{color:var(--orange-ink)}
header{padding-block:56px 32px;border-bottom:1px solid var(--line)}
.kicker{display:inline-flex;align-items:center;gap:8px;color:var(--orange-ink);font-weight:600;font-size:13px}
.kicker::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--orange)}
h1{font-weight:700;font-size:clamp(32px,4.4vw,52px);line-height:1.05;letter-spacing:-.03em;margin:14px 0 14px;max-width:16em}
.lede{font-family:var(--f-serif);font-size:18px;color:var(--grey-6);max-width:38em;margin:0}
.meta{font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--grey-5);margin-top:22px;display:flex;gap:24px;flex-wrap:wrap}
.layout{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,8fr);gap:clamp(32px,5vw,80px);padding-block:48px 96px}
.toc{position:sticky;top:88px;align-self:start}
.toc h3{margin:0 0 12px;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--grey-5)}
.toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.toc a{display:block;padding:7px 0 7px 14px;font-size:14px;color:var(--grey-5);text-decoration:none;margin-left:-1px;border-left:2px solid transparent}
.toc a:hover{color:var(--ink);border-left-color:var(--orange)}
article{max-width:42em;min-width:0}
article section{padding-block:8px 32px;border-bottom:1px solid var(--line);margin-bottom:32px}
article section:last-child{border:0}
h2{font-size:22px;font-weight:600;letter-spacing:-.015em;margin:0 0 14px}
article p,article li{font-family:var(--f-serif);font-size:17px;line-height:1.6;color:var(--grey-6)}
article p{margin:0 0 14px}article ul{margin:0 0 14px;padding-left:22px}article li{margin-bottom:6px}
article strong{color:var(--ink);font-weight:600}
article table{width:100%;border-collapse:collapse;font-family:var(--f-sans);font-size:14px;margin:8px 0 16px}
article th,article td{text-align:left;padding:10px 12px 10px 0;border-bottom:1px solid var(--line);vertical-align:top;color:var(--grey-6)}
article th{color:var(--ink);font-weight:600}
.note{background:var(--paper-2);border-radius:12px;padding:16px 18px;font-family:var(--f-sans);font-size:14px;color:var(--grey-6);margin:0 0 24px}
footer{background:#000;color:#fff;padding-block:40px}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--grey-3)}
footer nav{display:flex;gap:20px}footer nav a{text-decoration:none;color:var(--grey-3)}footer nav a:hover{color:#fff}
@media (max-width:860px){.layout{grid-template-columns:minmax(0,1fr)}.toc{position:static}}