:root{
  --bg:#f8fafc; --surface:#ffffff; --text:#0f172a; --muted:#475569;
  --border:#e2e8f0; --brand:#4f46e5; --brand-2:#06b6d4; --ring:#60a5fa;
  --shadow:0 10px 30px rgba(2,6,23,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0; min-height:100dvh; background:var(--bg); color:var(--text);
  font:400 16px/1.65 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Inter, "Helvetica Neue", Arial}
h1,h2,h3{line-height:1.2}
h1{font-size:clamp(1.8rem,2vw+1rem,2.4rem)}
h2{font-size:clamp(1.25rem,1vw+1rem,1.6rem)}
.container{max-width:1100px; margin-inline:auto; padding:28px 16px}
.header{position:sticky; top:0; z-index:50; backdrop-filter:blur(8px); border-bottom:1px solid var(--border);
  background:linear-gradient(180deg, rgba(255,255,255,.9), rgba(255,255,255,.7));}
.brand{display:flex; align-items:center; gap:.6rem; text-decoration:none; color:var(--text); font-weight:700}
.brand-mark{width:28px; height:28px; border-radius:8px; background: conic-gradient(from 120deg, var(--brand), var(--brand-2)); box-shadow:0 0 0 1px #fff inset}
.nav{display:flex; gap:.25rem; align-items:center}
.pill{padding-left: 10px; padding-right: 10px; padding-bottom: 5px; padding-top: 2px; border-radius:5px; color:#0f172acc; text-decoration:none}
.pill:hover{background: #E3E0E0}
.pill.active{background: #454545; color:#fff}
.menu-btn{display:none; padding:.5rem .75rem; border-radius:12px; border:1px solid var(--border); background:#fff}
@media (max-width: 840px){
  .nav{display:none}
  .menu-btn{display:inline-flex; align-items:center; gap:.35rem}
  .mobile{display:none; border-top:1px solid var(--border); background:var(--surface)}
  .mobile.open{display:block}
  .mobile a{display:block; padding:.75rem 1rem; border-bottom:1px solid var(--border); color:#111827; text-decoration:none}
  .mobile a:hover{background:#f1f5f9}
}
.hero{background: radial-gradient(700px 300px at 0% -10%, #e0e7ff 0%, transparent 55%),
               radial-gradient(600px 250px at 100% -20%, #cffafe 0%, transparent 55%);
  border:1px solid var(--border); border-radius:20px; padding:32px; box-shadow:var(--shadow)}
.lead{color:var(--muted)}
.section{background:var(--surface); border:1px solid var(--border); border-radius:16px; padding:24px; box-shadow:var(--shadow)}
.grid-3{display:grid; gap:16px; grid-template-columns:repeat(3,1fr)}
.grid-2{display:grid; gap:16px; grid-template-columns:repeat(2,1fr)}
@media (max-width: 900px){ .grid-3{grid-template-columns:1fr 1fr} }
@media (max-width: 640px){ .grid-3,.grid-2{grid-template-columns:1fr} }
.figure{border:0px dashed var(--border); border-radius:14px; height:auto; display:grid; place-items:center; color:var(--muted); background:#f8fafc;  border-color: #ccc;}
.btn{display:inline-flex; align-items:center; gap:.5rem; padding:.6rem 1rem; border-radius:12px; background:#111827; color:#fff; text-decoration:none; box-shadow:var(--shadow)}
.btn:hover{opacity:.95}
.footer{color:var(--muted); text-align:center; padding:28px 16px}
:where(a,button):focus-visible{outline:2px solid var(--ring); outline-offset:2px; border-radius:8px}