:root{--ink:#202128;--paper:#f5f5f1;--line:#dcdcd3;--accent:#4b3f8f;--soft:#ebe9f2;--muted:#5f6070}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.72 system-ui,-apple-system,"Segoe UI",sans-serif}
a{color:var(--accent);text-underline-offset:4px}
a:hover{opacity:.82}
a:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
.skip{position:absolute;left:-10000px}
.skip:focus{left:20px;top:14px;background:#fff;padding:10px;z-index:3}
.edition{padding:10px 4%;display:flex;justify-content:space-between;gap:14px;border-bottom:1px solid var(--line);font-size:11px;letter-spacing:.08em;background:var(--soft)}
.edition span:first-child{text-transform:uppercase}
header{padding:28px 4%;display:flex;align-items:center;justify-content:space-between;gap:30px;border-bottom:1px solid var(--line)}
.brand{font:600 24px/1.2 Georgia,"Times New Roman",serif;max-width:400px;color:var(--ink);text-decoration:none}
.brand small{display:block;font:11px/2 system-ui,sans-serif;letter-spacing:.19em;text-transform:uppercase;color:var(--accent);margin-top:6px}
header nav{display:flex;gap:24px;font-size:13px;flex-wrap:wrap}
header nav a,.cta{text-decoration:none}
.cta{font-size:13px;border:1px solid var(--accent);border-radius:999px;padding:8px 16px;white-space:nowrap}
main{max-width:1440px;margin:auto;padding:30px 4% 80px}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0 0 38px;padding:0;font-size:11px;color:var(--muted)}
.crumbs li+li:before{content:'/';margin-right:8px;opacity:.6}
.crumbs a{color:inherit}
.grid{display:grid;grid-template-columns:170px minmax(0,1fr) 230px;gap:44px}
.rail{font-size:12.5px;border-right:1px solid var(--line);padding-right:20px;align-self:start}
.rail a{display:block;margin:11px 0;color:var(--ink);text-decoration:none;line-height:1.45}
.rail hr,.record hr{border:0;border-top:1px solid var(--line);margin:16px 0}
.rail strong,.eyebrow{display:block;font:10px/1.5 system-ui,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
article{min-width:0}
h1{font:500 clamp(34px,4.2vw,62px)/1.07 Georgia,"Times New Roman",serif;letter-spacing:-.03em;margin:10px 0 26px;overflow-wrap:anywhere}
h2{font:500 29px/1.22 Georgia,"Times New Roman",serif;letter-spacing:-.015em;margin:0 0 18px}
h3{font:500 21px/1.28 Georgia,"Times New Roman",serif;margin:8px 0 10px}
p{margin:0 0 18px}
.answer{padding:22px 24px;background:var(--soft);border-left:4px solid var(--accent);border-radius:0 6px 6px 0;font-size:19.5px;line-height:1.55}
.answer p{margin:10px 0 0}
.note{font-size:12px;color:var(--muted);margin-top:14px}
.toc{border:1px solid var(--line);border-radius:6px;padding:18px 22px;margin:28px 0 38px;font-size:12.5px;background:#fff8}
.toc ol{columns:2;padding-left:18px;margin:8px 0 0}
.toc li{padding:3px 12px 3px 0;break-inside:avoid}
section{margin-top:38px;padding-top:28px;border-top:1px solid var(--line)}
.record{border-top:4px solid var(--accent);padding:20px 20px 22px;font-size:12.5px;align-self:start;background:var(--soft);border-radius:0 0 6px 6px}
.record h2{font-size:32px;margin:6px 0 0}
.record dt{font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-top:18px}
.record dd{margin:4px 0;overflow-wrap:anywhere}
.record>a{display:block;margin-top:14px}
.directory{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 28px}
.entry{display:block;color:var(--ink);text-decoration:none;padding:20px 0;border-top:1px solid var(--line)}
.entry h3{margin:8px 0 10px}
.entry p{font-size:14px;line-height:1.62;margin-bottom:8px}
.entry small{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--accent)}
.entry span{font-size:13px;color:var(--accent)}
.resource-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:24px 0}
.resource-list>a{display:block;padding:22px;border:1px solid var(--line);border-radius:6px;text-decoration:none;background:#fff8;transition:border-color .18s,transform .18s}
.resource-list>a:hover{border-color:var(--accent);transform:translateY(-2px)}
.resource-list h3{font-size:24px;margin:10px 0}
.resource-list p{color:var(--ink);font-size:14px}
.graph{overflow-x:auto;margin-top:22px}
.graph svg{min-width:540px;width:100%;display:block;color:var(--accent)}
.graph rect{fill:var(--paper);stroke:var(--accent);rx:6}
.graph text{fill:var(--ink);font:13px system-ui,sans-serif}
.graph a:hover rect{fill:var(--soft)}
.graph-caption{font-size:13px;text-align:center;color:var(--muted)}
details{border-bottom:1px solid var(--line);padding:16px 0}
summary{cursor:pointer;font-weight:600;line-height:1.4}
details p{font-size:14.5px;margin:12px 0 0}
.paths{display:flex;flex-wrap:wrap;gap:10px}
.paths a{border:1px solid var(--line);border-radius:999px;padding:9px 16px;text-decoration:none;font-size:13px}
.network-list li{margin-bottom:14px}
.citation{overflow-wrap:anywhere}
footer{border-top:1px solid var(--line);padding:36px 4%;font-size:12px;display:grid;grid-template-columns:1fr 1fr;gap:20px;background:var(--soft)}
footer nav{display:flex;justify-content:flex-end;gap:18px;flex-wrap:wrap}
footer p{grid-column:1/-1;color:var(--muted);max-width:900px;margin:0}
@media(max-width:1100px){header{flex-wrap:wrap}.grid{grid-template-columns:minmax(0,1fr) 220px;gap:30px}.rail{display:none}}
@media(max-width:720px){
.edition{font-size:9px;padding:9px 5%;justify-content:flex-end}.edition span:first-child{display:none}
header{padding:22px 5%;gap:18px}.brand{font-size:23px;max-width:100%}
header nav{gap:16px;order:3;width:100%}.cta{margin-left:auto}
main{padding:22px 5% 50px}.grid{display:flex;flex-direction:column}.record{order:2;width:100%}
.crumbs ol{margin-bottom:24px}.toc ol{columns:1}.directory,.resource-list{grid-template-columns:1fr}
.answer{font-size:18px}h1{font-size:38px}h2{font-size:26px}
footer{display:block;padding:28px 5%}footer nav{justify-content:flex-start;margin:18px 0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}