:root{
  --bg:#f5f4f0;
  --surface:#fbfaf7;
  --surface-2:#efede7;
  --text:#1f2325;
  --muted:#6c706f;
  --line:#d8d5cd;
  --accent:#7a5b45;
  --accent-2:#a88770;
  --ok:#4f6b57;
  --max:1180px;
  --radius:18px;
  --shadow:0 12px 40px rgba(24,27,29,.06);
}
html[data-theme="dark"]{
  --bg:#17191a;
  --surface:#1d2021;
  --surface-2:#232728;
  --text:#eceae5;
  --muted:#a6aaa7;
  --line:#34393a;
  --accent:#c3a38c;
  --accent-2:#d5baa8;
  --ok:#89a890;
  --shadow:0 14px 44px rgba(0,0,0,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font:16px/1.65 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block}
button,input{font:inherit}
.container{width:min(calc(100% - 32px),var(--max));margin-inline:auto}
.site-header{
  position:sticky;top:0;z-index:30;
  backdrop-filter:saturate(160%) blur(18px);
  background:color-mix(in srgb,var(--bg) 86%, transparent);
  border-bottom:1px solid color-mix(in srgb,var(--line) 80%, transparent);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:74px}
.brand{display:flex;align-items:center;gap:11px;font-weight:760;letter-spacing:-.02em}
.brand-mark{width:34px;height:34px;border:1px solid var(--line);border-radius:10px;display:grid;place-items:center;background:var(--surface)}
.brand-mark::before{
  content:""; width:14px;height:14px;border:2px solid var(--accent);border-radius:50% 50% 48% 52%;
  box-shadow:7px 0 0 -4px var(--accent),-7px 0 0 -4px var(--accent);
}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a,.icon-btn{
  padding:9px 12px;border-radius:10px;color:var(--muted);border:1px solid transparent;
}
.nav-links a:hover,.nav-links a[aria-current="page"],.icon-btn:hover{
  color:var(--text);background:var(--surface);border-color:var(--line)
}
.icon-btn{cursor:pointer;background:transparent}
.menu-btn{display:none}
.hero{padding:92px 0 54px}
.eyebrow{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:760}
h1,h2,h3{line-height:1.08;letter-spacing:-.04em;margin:0}
h1{font-size:clamp(46px,8vw,92px);max-width:920px;font-weight:780}
h2{font-size:clamp(30px,4vw,50px);font-weight:740}
h3{font-size:23px;font-weight:720}
.hero p{max-width:730px;font-size:clamp(18px,2vw,22px);color:var(--muted);margin:24px 0 0}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.pill{padding:8px 11px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--muted);font-size:14px}
.section{padding:42px 0 78px}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:24px}
.section-head p{margin:0;color:var(--muted);max-width:580px}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  box-shadow:var(--shadow);min-width:0
}
.card:hover{border-color:color-mix(in srgb,var(--accent) 45%,var(--line))}
.feature{grid-column:span 7;min-height:330px;display:flex;flex-direction:column;justify-content:space-between}
.side{grid-column:span 5;min-height:330px}
.article-card{grid-column:span 4;min-height:245px;display:flex;flex-direction:column}
.article-card .card-foot{margin-top:auto}
.card-kicker{font-size:13px;color:var(--accent);font-weight:760;text-transform:uppercase;letter-spacing:.09em}
.card p{color:var(--muted);margin:14px 0}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--muted);font-size:14px}
.arrow{font-size:22px;color:var(--accent)}
.topic-list{display:grid;gap:10px;margin-top:20px}
.topic-link{display:flex;justify-content:space-between;gap:20px;padding:13px 0;border-top:1px solid var(--line)}
.topic-link span:last-child{color:var(--muted)}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 26px}
.filter-btn{border:1px solid var(--line);background:var(--surface);color:var(--muted);padding:9px 13px;border-radius:999px;cursor:pointer}
.filter-btn.active{background:var(--text);color:var(--bg);border-color:var(--text)}
.search-wrap{position:relative;max-width:640px}
.search{
  width:100%;border:1px solid var(--line);background:var(--surface);color:var(--text);
  padding:14px 16px 14px 44px;border-radius:14px;outline:none
}
.search:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 14%,transparent)}
.search-icon{position:absolute;left:16px;top:14px;color:var(--muted)}
.empty{display:none;padding:30px 0;color:var(--muted)}
.article-hero{padding:68px 0 30px}
.article-hero h1{font-size:clamp(42px,6vw,72px);max-width:980px}
.article-meta{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px;color:var(--muted);font-size:14px}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 260px;gap:56px;align-items:start;padding:28px 0 90px}
.prose{font-size:18px;line-height:1.82}
.prose h2{font-size:34px;margin:54px 0 16px}
.prose h3{font-size:24px;margin:34px 0 12px}
.prose p{margin:0 0 20px}
.prose ul,.prose ol{padding-left:25px;margin:0 0 24px}
.prose li{margin:7px 0}
.prose code{background:var(--surface-2);border:1px solid var(--line);padding:.12em .35em;border-radius:6px;font-size:.92em}
.note{border-left:3px solid var(--accent);background:var(--surface);padding:18px 20px;border-radius:0 14px 14px 0;margin:28px 0;color:var(--muted)}
.toc{position:sticky;top:98px;padding-top:8px}
.toc strong{display:block;margin-bottom:10px}
.toc a{display:block;color:var(--muted);padding:7px 0;border-bottom:1px solid var(--line);font-size:14px}
.toc a:hover{color:var(--text)}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.stat{padding:20px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.stat strong{font-size:26px;display:block}
.stat span{color:var(--muted);font-size:14px}
.status-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 0;border-top:1px solid var(--line)}
.status-badge{display:inline-flex;align-items:center;gap:8px;color:var(--ok);font-weight:700}
.dot{width:8px;height:8px;border-radius:50%;background:currentColor}
.footer{border-top:1px solid var(--line);padding:34px 0 48px;color:var(--muted)}
.footer-row{display:flex;justify-content:space-between;align-items:flex-start;gap:28px}
.footer-links{display:flex;gap:16px;flex-wrap:wrap}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.muted{color:var(--muted)}
.not-found{padding:120px 0}
.not-found .code{font-size:clamp(90px,18vw,220px);line-height:.8;letter-spacing:-.08em;color:var(--surface-2);font-weight:900}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 16px;border-radius:12px;
  background:var(--text);color:var(--bg);border:1px solid var(--text);font-weight:700
}
.btn.secondary{background:var(--surface);color:var(--text);border-color:var(--line)}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
@media (max-width:900px){
  .feature,.side,.article-card{grid-column:span 12}
  .article-card{min-height:0}
  .article-layout{grid-template-columns:1fr;gap:24px}
  .toc{position:static;order:-1;padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
  .stat-grid{grid-template-columns:1fr}
}
@media (max-width:760px){
  .nav-links{display:none;position:absolute;left:16px;right:16px;top:66px;flex-direction:column;align-items:stretch;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .menu-btn{display:inline-flex}
  .hero{padding-top:64px}
  .section-head,.footer-row{align-items:flex-start;flex-direction:column}
  .container{width:min(calc(100% - 24px),var(--max))}
  .card{padding:20px}
}
@media (prefers-reduced-motion:no-preference){
  .card,.nav-links a,.icon-btn,.filter-btn{transition:.2s ease}
}