@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root{
  --teal:#1CB5A3;
  --teal-2:#34d3c2;
  --bg:#ffffff;
  --panel:#f7f8fb;
  --panel-2:#eef1f7;
  --text:#0b1220;
  --muted:#6b7280;
  --border:rgba(0,0,0,.08);
  --shadow:0 10px 28px rgba(0,0,0,.08);
  --radius:18px;
  --radius-lg:22px;
}
:root.dark{
  --bg:#0b0e14;
  --panel:#121622;
  --panel-2:#141a26;
  --text:#e9eefb;
  --muted:#9aa4b2;
  --border:rgba(255,255,255,.12);
  --shadow:0 12px 40px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%;background:var(--bg);color:var(--text);
  font-family:'Nunito',Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif}
h1,h2,h3,.brand,.btn{font-family:'Nunito',Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif}
a{color:inherit;text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:24px}
nav{position:sticky;top:0;background:color-mix(in oklab, var(--bg) 96%, transparent);backdrop-filter:blur(8px);
    border-bottom:1px solid var(--border);z-index:40}
.navbar{display:flex;align-items:center;justify-content:space-between;padding:16px 24px}
.brand{font-weight:800;letter-spacing:.2px}
.brand .dot{color:var(--teal)}
.links a{margin:0 12px;color:var(--muted);border-radius:12px;padding:6px 8px}
.links a.active{color:var(--teal);font-weight:800;background:rgba(28,181,163,.08)}
.right{display:flex;align-items:center;gap:10px}
.btn{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--teal),var(--teal-2));
     color:#081014;padding:11px 16px;border-radius:var(--radius-lg);border:1px solid color-mix(in oklab, var(--teal) 30%, #0000);
     box-shadow:var(--shadow);font-weight:800;letter-spacing:.1px}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--border)}
.hero{position:relative;overflow:hidden;padding:84px 24px 40px;text-align:center}
.hero h1{font-size:56px;line-height:1.04;margin:0 0 14px;letter-spacing:-.3px}
.hero p{color:var(--muted);font-size:18px;margin:0 0 24px}
.cta{display:flex;justify-content:center;gap:10px;flex-wrap:wrap}
.hero::before{
  content:"";position:absolute;inset:-30% -10% auto -10%;
  height:60vh;filter:blur(70px);opacity:.45;pointer-events:none;
  background:radial-gradient(600px 300px at 40% 20%, rgba(28,181,163,.25), transparent 60%),
             radial-gradient(400px 200px at 70% 10%, rgba(52,211,194,.15), transparent 60%);
}
.bg-grid{
  position:relative;border-radius:var(--radius-lg);padding:24px;background:linear-gradient(180deg,rgba(0,0,0,.02),rgba(0,0,0,.01));
  border:1px solid var(--border);
}
.bg-grid::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);pointer-events:none;opacity:.10;
  background-image: linear-gradient(rgba(0,0,0,.06) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(0,0,0,.06) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(circle at 50% 30%, black 40%, transparent 80%);
}
.section{padding:52px 0}
.section h2{font-size:30px;margin:0 0 12px}
.section p.lead{color:var(--muted);margin:0 0 18px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.card{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--border); padding:20px;border-radius:var(--radius);box-shadow:var(--shadow);
}
.card h3{margin:0 0 8px}
.badge{display:inline-block;padding:7px 12px;border-radius:999px;background:rgba(28,181,163,.1);
  border:1px solid rgba(28,181,163,.28);color:var(--teal);font-size:12px;font-weight:800}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.kpi{background:linear-gradient(180deg,var(--panel),var(--panel-2));border:1px solid var(--border);
     padding:18px;border-radius:var(--radius);text-align:center}
.kpi .num{font-size:30px;font-weight:900;letter-spacing:.2px}
.kpi .lbl{color:var(--muted);font-size:12px}
.usecase{display:flex;gap:14px;align-items:flex-start}
.usecase .dot{width:12px;height:12px;border-radius:999px;background:var(--teal);margin-top:10px;flex:0 0 12px}
.arch{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;align-items:stretch}
.arch .lane{display:flex;flex-direction:column;gap:10px}
.arch .lane .node{padding:14px;border-radius:var(--radius);border:1px solid var(--border);
  background:linear-gradient(180deg,var(--panel),var(--panel-2))}
.arch .lane .node strong{display:block;margin-bottom:6px;color:var(--teal)}
.arch .lane .node small{color:var(--muted)}
.faq .q{cursor:pointer;border:1px solid var(--border);border-radius:var(--radius);padding:16px;
  background:linear-gradient(180deg,var(--panel),var(--panel-2));margin-bottom:8px}
.faq .q h4{margin:0}
.faq .a{display:none;padding:10px 6px 16px;color:var(--muted)}
footer{border-top:1px solid var(--border);padding:28px;color:var(--muted);text-align:center;margin-top:64px}
.tabs{display:flex;gap:8px;border-bottom:1px solid var(--border);margin-bottom:12px;flex-wrap:wrap}
.tab{padding:10px 12px;border-radius:var(--radius);background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--border);cursor:pointer}
.tab.active{outline:2px solid var(--teal);}
.section-inner{display:none}
.section-inner.active{display:block}
textarea,input,select{width:100%;padding:12px;border-radius:var(--radius);border:1px solid var(--border);
  background:var(--bg);color:var(--text)}
pre{background:linear-gradient(180deg,var(--panel),var(--panel-2));padding:12px;border-radius:var(--radius);border:1px solid var(--border);
  white-space:pre-wrap}
.chat{display:flex;flex-direction:column;gap:10px}
.msg{padding:12px 14px;border-radius:var(--radius-lg);max-width:720px;border:1px solid var(--border)}
.msg.user{align-self:flex-end;background:linear-gradient(135deg,var(--teal),var(--teal-2));color:#081014}
.msg.bot{align-self:flex-start;background:linear-gradient(180deg,var(--panel),var(--panel-2))}
small.muted{color:var(--muted)}
@media (max-width:1000px){.grid3,.grid2,.arch,.kpis{grid-template-columns:1fr} .hero h1{font-size:40px}}

/* bump brand size */
.brand{font-size: calc(var(--brand-size, 20px) + 2px);}

/* Mobile nav */
.nav-toggle { display: none; background: transparent; border: 0; padding: 8px; border-radius: 10px; }
.nav-toggle:focus { outline: 2px solid var(--border); outline-offset: 2px; }

@media (max-width: 900px) {
  .navbar { position: relative; }
  .links { display: none; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; margin-left: 8px; }
  .right .btn, .right .btn.ghost { display: none; }
  .right { display: inline-flex; align-items: center; margin-left: auto; }
  .links.is-open {
    display: block;
    position: absolute;
    top: calc(100% + 8px);
    right: 12px;
    left: 12px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow);
    padding: 10px;
    z-index: 50;
  }
  .links.is-open a {
    display: block;
    padding: 10px 12px;
    border-radius: 10px;
  }
  .links.is-open a:hover { background: var(--panel-2); }
}