:root {
  --um-bg: #041020;
  --um-bg-2: #07172c;
  --um-panel: rgba(8, 24, 43, .76);
  --um-panel-strong: rgba(8, 26, 49, .92);
  --um-border: rgba(110, 220, 255, .20);
  --um-border-strong: rgba(110, 220, 255, .48);
  --um-text: #edf8ff;
  --um-muted: #a7bad0;
  --um-cyan: #37d9ff;
  --um-blue: #2197ff;
  --um-purple: #a56cff;
  --um-green: #89f45b;
  --um-orange: #ff8b38;
  --um-pink: #ff5bc8;
  --um-radius-xl: 28px;
  --um-radius-lg: 20px;
  --um-font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --um-shadow: 0 24px 80px rgba(0,0,0,.42);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body.usemath-site{
  margin:0;min-height:100vh;color:var(--um-text);font-family:var(--um-font);
  background:
    radial-gradient(circle at 85% 7%, rgba(33,151,255,.20), transparent 28rem),
    radial-gradient(circle at 12% 15%, rgba(55,217,255,.18), transparent 26rem),
    linear-gradient(135deg,#020711 0%,#061426 46%,#030812 100%);
}
body.usemath-site::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:-2;opacity:.45;
  background-image:
    linear-gradient(rgba(101,247,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(101,247,255,.055) 1px,transparent 1px);
  background-size:58px 58px;
  mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 72%);
}
body.usemath-site::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;opacity:.22;
  background:
    radial-gradient(circle at 20% 42%, rgba(55,217,255,.22) 0 1px, transparent 2px),
    radial-gradient(circle at 65% 22%, rgba(165,108,255,.18) 0 1px, transparent 2px),
    radial-gradient(circle at 82% 70%, rgba(255,91,200,.12) 0 1px, transparent 2px);
  background-size: 120px 120px, 180px 180px, 140px 140px;
}
a{color:inherit}
.um-site-header{
  position:sticky;top:0;z-index:60;display:flex;align-items:center;justify-content:space-between;gap:1rem;
  min-height:74px;padding:0 clamp(1rem,3.5vw,2.4rem);background:rgba(2,8,18,.82);
  border-bottom:1px solid rgba(110,220,255,.16);backdrop-filter:blur(18px);
}
.um-brand{display:inline-flex;align-items:center;gap:.72rem;text-decoration:none;min-width:max-content}
.um-brand-mark{width:42px;height:42px;display:grid;place-items:center;filter:drop-shadow(0 0 14px rgba(55,217,255,.42))}
.um-brand-mark svg{width:42px;height:42px;display:block;stroke-linecap:round;stroke-linejoin:round}
.um-brand-text strong{font-size:1.22rem;letter-spacing:-.025em;font-weight:850;line-height:1;white-space:nowrap}
.um-brand-text span{color:#fff}
.um-brand-text em{font-style:normal;color:var(--um-blue)}
.um-primary-nav{display:block}
.um-nav-list{display:flex;align-items:center;gap:.25rem;list-style:none;margin:0;padding:0}
.um-nav-list a{display:inline-flex;align-items:center;min-height:44px;padding:.66rem 1rem;border:1px solid transparent;border-radius:12px;color:var(--um-muted);text-decoration:none;font-weight:700;transition:.2s ease}
.um-nav-list a:hover,.um-nav-list a:focus-visible{color:var(--um-text);background:linear-gradient(180deg,rgba(55,217,255,.14),rgba(55,217,255,.05));border-color:rgba(55,217,255,.28);box-shadow:0 0 24px rgba(55,217,255,.16)}
.um-nav-toggle{display:none;color:var(--um-text);background:rgba(55,217,255,.08);border:1px solid rgba(55,217,255,.28);border-radius:999px;padding:.55rem .9rem;font-weight:800}
.um-site-main{min-height:calc(100vh - 150px)}
.um-front-shell,.um-page-shell{width:min(1460px,calc(100% - 2rem));margin:0 auto;padding:clamp(1.2rem,3.5vw,2.4rem) 0}
.um-page-card{position:relative;overflow:hidden;border:1px solid rgba(110,220,255,.18);border-radius:var(--um-radius-xl);background:linear-gradient(135deg,rgba(7,22,42,.86),rgba(4,12,24,.7));box-shadow:var(--um-shadow);padding:clamp(1.1rem,3vw,2rem)}
.um-page-card::after{content:"";position:absolute;right:-8rem;top:-12rem;width:30rem;height:30rem;background:radial-gradient(circle,rgba(55,217,255,.16),transparent 65%);pointer-events:none}
.um-page-content{position:relative;z-index:1}
.um-page-content>*:first-child{margin-top:0}.um-page-content>*:last-child{margin-bottom:0}
.um-site-footer{border-top:1px solid rgba(110,220,255,.13);background:rgba(2,8,18,.78);color:var(--um-muted)}
.um-footer-inner{width:min(1460px,calc(100% - 2rem));margin:0 auto;display:flex;justify-content:space-between;gap:2rem;padding:1.4rem 0}
.um-footer-inner p{margin:.3rem 0 0}.um-footer-links{display:flex;gap:.9rem;flex-wrap:wrap;align-items:center}.um-footer-links a{color:var(--um-muted);text-decoration:none}.um-footer-links a:hover{color:var(--um-cyan)}
.usemath-embed-mode .um-site-header,.usemath-embed-mode .um-site-footer{display:none}.um-clean-embed-main{min-height:100vh;padding:clamp(1rem,3vw,2rem)}
@media(max-width:900px){.um-site-header{align-items:center}.um-nav-toggle{display:inline-flex}.um-primary-nav{display:none;position:absolute;left:1rem;right:1rem;top:calc(100% + .5rem);padding:.75rem;border:1px solid rgba(110,220,255,.2);border-radius:20px;background:rgba(2,8,18,.95);box-shadow:var(--um-shadow)}.um-primary-nav.is-open{display:block}.um-nav-list{flex-direction:column;align-items:stretch}.um-nav-list a{width:100%}.um-footer-inner{flex-direction:column}.um-front-shell,.um-page-shell{width:min(100% - 1rem,1460px)}}