:root{
  --bg:#f7f5f0;--surface:#ffffff;--ink:#1d1f24;--muted:#5d6370;--line:#e3dfd6;
  --accent:#8a5a14;--accent-soft:#f3e8d6;--warn-bg:#fff4e0;--warn-line:#e9c07a;
  --link:#7a4b0c;--max:760px;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#15171b;--surface:#1c1f24;--ink:#e8e6e1;--muted:#a3a8b2;--line:#2e323a;
  --accent:#e0b46a;--accent-soft:#2a2418;--warn-bg:#2a2214;--warn-line:#6b5426;--link:#f0c27a;}
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 Georgia,"Iowan Old Style","Palatino Linotype",serif}
a{color:var(--link);text-underline-offset:2px}
a:hover{text-decoration-thickness:2px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}
.site-head{border-bottom:1px solid var(--line);background:var(--surface)}
.site-head .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 20px;padding-top:14px;padding-bottom:14px;max-width:1040px}
.brand{font:600 18px/1.2 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);text-decoration:none;letter-spacing:.2px}
.brand span{display:block;font-weight:400;font-size:12.5px;color:var(--muted);letter-spacing:.4px;text-transform:uppercase}
nav.main{display:flex;flex-wrap:wrap;gap:4px 16px;font:14px/1.4 system-ui,-apple-system,"Segoe UI",sans-serif}
nav.main a{color:var(--muted);text-decoration:none}
nav.main a:hover,nav.main a[aria-current]{color:var(--ink);text-decoration:underline}
.notice{background:var(--warn-bg);border-bottom:1px solid var(--warn-line);font:14px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif}
.notice .wrap{padding-top:9px;padding-bottom:9px;max-width:1040px}
main{padding:36px 0 56px}
h1,h2,h3{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.25;letter-spacing:-.2px}
h1{font-size:clamp(28px,5vw,38px);margin:0 0 12px}
h2{font-size:23px;margin:40px 0 10px;padding-top:6px}
h3{font-size:18px;margin:26px 0 6px}
.lede{font-size:19px;color:var(--muted);margin-top:0}
.meta{font:13px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--muted);margin-bottom:26px}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;margin:24px 0}
.fact{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:12px 14px}
.fact b{display:block;font:600 19px/1.2 system-ui,-apple-system,"Segoe UI",sans-serif}
.fact small{display:block;margin-top:3px;color:var(--muted);font:12.5px/1.4 system-ui,-apple-system,"Segoe UI",sans-serif}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:18px 0}
.card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:14px 16px;text-decoration:none;color:var(--ink)}
.card:hover{border-color:var(--accent)}
.card strong{display:block;font:600 16px/1.3 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--link);margin-bottom:4px}
.card span{font-size:15px;color:var(--muted)}
.timeline{list-style:none;padding:0;margin:18px 0;border-left:2px solid var(--line)}
.timeline li{position:relative;padding:0 0 18px 20px}
.timeline li::before{content:"";position:absolute;left:-6px;top:8px;width:10px;height:10px;border-radius:50%;background:var(--accent)}
.timeline time{display:block;font:600 13px/1.4 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--accent);text-transform:uppercase;letter-spacing:.4px}
table{width:100%;border-collapse:collapse;margin:16px 0;font-size:15.5px;background:var(--surface)}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{font:600 14px/1.4 system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--accent-soft)}
.table-scroll{overflow-x:auto}
.callout{background:var(--accent-soft);border-left:3px solid var(--accent);padding:12px 16px;border-radius:0 6px 6px 0;margin:20px 0}
.callout p{margin:.3em 0}
details{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:10px 14px;margin:10px 0}
summary{cursor:pointer;font:600 16px/1.4 system-ui,-apple-system,"Segoe UI",sans-serif}
details p{margin:.6em 0 .2em}
.src{font-size:15px}
.src li{margin-bottom:6px;word-break:break-word}
.site-foot{border-top:1px solid var(--line);background:var(--surface);font:13.5px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--muted)}
.site-foot .wrap{padding-top:22px;padding-bottom:28px;max-width:1040px}
.site-foot a{color:var(--muted)}
.foot-links{display:flex;flex-wrap:wrap;gap:4px 16px;margin-bottom:10px}
code{font-size:.88em;background:var(--accent-soft);padding:1px 5px;border-radius:4px;word-break:break-all}
.breadcrumb{font:13px/1.4 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--muted);margin-bottom:14px}
.breadcrumb a{color:var(--muted)}