:root{
  --bg:#fafafa;--surface:#ffffff;--text:#111111;--muted:#666666;--soft:#f6f8fb;
  --line:#eaeaea;--accent:#0070f3;--accent-soft:#eef6ff;
  --shadow:0 14px 36px rgba(17,17,17,.055);--shadow-soft:0 8px 22px rgba(17,17,17,.04);
  --radius-lg:24px;--radius-md:18px;--radius-sm:12px;--max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;line-height:1.55;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:3px solid rgba(0,112,243,.32);outline-offset:3px;border-radius:10px}
p{margin:0 0 1rem}
.container{width:min(var(--max),calc(100% - 40px));margin-inline:auto}
.skip-link{position:absolute;left:-999px;top:12px;z-index:999;background:var(--text);color:#fff;padding:10px 14px;border-radius:10px}
.skip-link:focus{left:16px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:saturate(180%) blur(14px)}
.header-inner{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:900;font-size:1.42rem;letter-spacing:-.045em;color:var(--text)}
.brand-mark{width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 6px var(--accent-soft)}
.nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav a{color:#555;font-size:.95rem;font-weight:650;padding:9px 11px;border-radius:999px;transition:background .18s ease,color .18s ease}
.nav a:hover,.nav a.active{color:var(--text);background:var(--soft)}
.menu-toggle{display:none;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;border-radius:999px;padding:10px 13px;font-weight:750;cursor:pointer}
.menu-icon{width:16px;height:12px;display:inline-grid;gap:3px}
.menu-icon span{display:block;height:2px;background:var(--text);border-radius:2px}
main{min-height:70vh}
.section{padding:38px 0}
.eyebrow{color:var(--accent);font-size:.76rem;font-weight:850;text-transform:uppercase;letter-spacing:.08em;margin-bottom:12px}
.article-shell{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-soft);padding:clamp(28px,5vw,52px)}
.breadcrumb{font-size:.88rem;color:#777;margin-bottom:18px}
.breadcrumb a{color:var(--accent);font-weight:750}
.article-shell h1{font-size:clamp(2.05rem,4.5vw,3.45rem);max-width:900px;margin:0 0 16px;color:var(--text);letter-spacing:-.045em;line-height:1.08}
.dek{font-size:1.15rem;color:#555;max-width:820px;margin:0 0 1rem}
.meta-row{display:flex;flex-wrap:wrap;gap:10px 18px;color:#777;font-size:.92rem;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;margin:26px 0}
.content{font-size:1.05rem;max-width:770px}
.content h2{font-size:clamp(1.45rem,2.6vw,2rem);margin:34px 0 12px;color:var(--text);letter-spacing:-.03em;line-height:1.1}
.content h3{font-size:1.22rem;margin:26px 0 8px;color:var(--text);letter-spacing:-.02em}
.content p{color:#333}
.content ul{padding-left:1.2rem}
.content li{margin:8px 0;color:#333}
.content a{color:var(--accent);font-weight:750;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.callout{border:1px solid var(--line);background:var(--soft);border-radius:var(--radius-sm);padding:18px;margin:22px 0}
.ad-placement{border:1px dashed #d0d8e4;background:#f8fafd;border-radius:var(--radius-sm);padding:14px 18px;margin:28px 0;color:#7a8fa6;font-size:.88rem;font-weight:700;text-align:center;letter-spacing:.04em}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.tag{font-size:.83rem;background:var(--accent-soft);color:#064f9e;border:1px solid rgba(0,112,243,.15);padding:7px 12px;border-radius:999px;font-weight:750}
.related-box{margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.related-box h3{font-size:1rem;text-transform:uppercase;letter-spacing:.065em;color:#888;margin:0 0 14px}
.related-box ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.related-box li a{color:var(--accent);font-weight:750;font-size:.98rem}
.footer{margin-top:54px;background:#fff;border-top:1px solid var(--line)}
.footer-inner{padding:38px 0 48px;display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:30px}
.footer-brand{font-size:1.25rem;font-weight:900;letter-spacing:-.045em;margin-bottom:10px}
.footer-col h4{font-size:.92rem;text-transform:uppercase;letter-spacing:.06em;margin:0 0 14px;color:var(--text)}
.footer-col a{display:block;color:#666;margin-bottom:9px}
.footer-col a:hover{color:var(--accent)}
.muted{color:var(--muted);font-size:.95rem}
.copyright{border-top:1px solid var(--line);padding:18px 0;color:#777;font-size:.88rem}
@media(max-width:760px){
  .container{width:min(100% - 28px,var(--max))}
  .header-inner{min-height:68px}
  .brand{font-size:1.23rem}
  .menu-toggle{display:inline-flex}
  .nav{display:none;position:absolute;top:68px;left:14px;right:14px;flex-direction:column;align-items:stretch;gap:4px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .nav a{padding:12px 14px;border-radius:12px}
  .section{padding:28px 0}
  .footer-inner{grid-template-columns:1fr}
}
@media(max-width:420px){
  .article-shell{padding:24px 18px}
}