:root{
  --bg:#0B0D12; --text:#E8EEF7; --muted:#9AA7B6;
  --cyan:#22E6FF; --violet:#7A6CFF; --gold:#F4B64E;
  --shadow:0 12px 40px rgba(0,0,0,0.45);
  --radius:18px; --radius2:14px;
  --serif:"Source Serif 4",ui-serif,Georgia,serif;
  --sans:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;
  --max:860px;
}
*{box-sizing:border-box}
body{
  margin:0; color:var(--text); font-family:var(--serif); line-height:1.6;
  background:
    radial-gradient(1200px 900px at 18% -10%, rgba(122,108,255,0.22), transparent 55%),
    radial-gradient(900px 700px at 82% 10%, rgba(34,230,255,0.16), transparent 55%),
    radial-gradient(1200px 900px at 40% 120%, rgba(244,182,78,0.08), transparent 60%),
    var(--bg);
}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}

.topbar{
  position:sticky; top:0; z-index:10;
  backdrop-filter:blur(10px);
  background:linear-gradient(to bottom, rgba(11,13,18,0.92), rgba(11,13,18,0.62));
  border-bottom:1px solid rgba(255,255,255,0.08);
  padding:14px 18px;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
}
.brand{display:flex;align-items:center;gap:12px;min-width:260px}
.mark{
  width:44px;height:44px;border:1px solid rgba(255,255,255,0.12);
  border-radius:14px;background:rgba(255,255,255,0.03);
  box-shadow:var(--shadow);display:grid;place-items:center;overflow:hidden;
}
.mark svg{width:44px;height:44px}
.wordmark .title{font-family:var(--sans);letter-spacing:.16em;font-weight:600;font-size:12px}
.wordmark .subtitle{font-family:var(--sans);color:var(--muted);font-size:12px;margin-top:2px}
.nav{display:flex;gap:18px;font-family:var(--sans);font-size:13px}
.nav a{color:var(--muted)}
.nav a:hover{color:var(--text);text-decoration:none}

.layout{
  display:grid; grid-template-columns:290px 1fr; gap:28px;
  padding:26px 18px 48px; max-width:1240px; margin:0 auto;
}
.rail{
  position:sticky; top:82px; align-self:start;
  border:1px solid rgba(255,255,255,0.08);
  background:rgba(255,255,255,0.03);
  border-radius:var(--radius); padding:14px; box-shadow:var(--shadow);
}
.rail-section{margin-bottom:14px}
.rail-header{
  font-family:var(--sans); letter-spacing:.14em; text-transform:uppercase;
  font-size:11px; color:rgba(232,238,247,0.85); padding:10px 10px 6px;
}
.rail-list{list-style:none;padding:0;margin:0 0 8px}
.rail-list li{margin:4px 0}
.rail-list a,.rail-list button{
  width:100%; display:flex; justify-content:space-between; gap:10px;
  padding:10px; border-radius:12px; border:1px solid transparent;
  background:transparent; color:rgba(232,238,247,0.86);
  font-family:var(--sans); font-size:13px; cursor:pointer; text-align:left;
}
.rail-list a:hover,.rail-list button:hover{
  background:rgba(255,255,255,0.04); border-color:rgba(255,255,255,0.08);
  text-decoration:none;
}
.rail-list .active{background:rgba(34,230,255,0.10);border-color:rgba(34,230,255,0.22)}
.rail-list.compact a{padding:8px 10px;font-size:12.5px;color:rgba(154,167,182,0.95)}

.content{max-width:var(--max)}
.hero{padding:22px 8px 8px}
.kicker{
  font-family:var(--sans); letter-spacing:.22em; text-transform:uppercase;
  font-size:11px; color:rgba(154,167,182,0.95); margin-bottom:10px;
}
h1{font-size:52px;line-height:1.05;margin:0 0 12px;letter-spacing:-0.02em}
.lede{font-size:18px;color:rgba(232,238,247,0.85);margin:0 0 18px}
.ctaRow{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.btn{
  font-family:var(--sans); font-size:13px; padding:10px 14px; border-radius:14px;
  border:1px solid rgba(255,255,255,0.14); background:rgba(255,255,255,0.03);
  color:var(--text); display:inline-flex; align-items:center;
  box-shadow:0 10px 28px rgba(0,0,0,0.35);
}
.btn:hover{border-color:rgba(255,255,255,0.22);text-decoration:none}
.btn.primary{
  border-color:rgba(34,230,255,0.28);
  background:linear-gradient(135deg, rgba(34,230,255,0.18), rgba(122,108,255,0.10));
}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 0}
.chip{
  font-family:var(--sans);font-size:12px;color:rgba(232,238,247,0.85);
  border:1px solid rgba(255,255,255,0.12);background:rgba(255,255,255,0.03);
  padding:7px 10px;border-radius:999px;
}

.sectionHeader{margin-top:28px;margin-bottom:12px}
.sectionHeader h2{margin:0 0 6px;font-size:30px}
.muted{color:rgba(154,167,182,0.95);font-family:var(--sans);font-size:13.5px;line-height:1.55}

.panel{
  margin-top:16px;border:1px solid rgba(255,255,255,0.10);
  background:rgba(255,255,255,0.03);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.panelHeader{padding:16px 18px 10px}
.panelTitle{font-family:var(--sans);letter-spacing:.12em;text-transform:uppercase;font-size:12px}
.panelHint{font-family:var(--sans);color:rgba(154,167,182,0.95);font-size:13px;margin-top:6px}
.pickerGrid{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:0 18px 12px}
.picker label{font-family:var(--sans);color:rgba(154,167,182,0.95);font-size:12px;display:block;margin:0 0 6px}
select{
  width:100%;padding:10px 12px;border-radius:14px;border:1px solid rgba(255,255,255,0.14);
  background:rgba(11,13,18,0.55);color:rgba(232,238,247,0.95);font-family:var(--sans);font-size:13px;
}
select:focus{outline:none;border-color:rgba(34,230,255,0.30);box-shadow:0 0 0 4px rgba(34,230,255,0.10)}
.result{
  margin:0 18px 14px;border-radius:16px;border:1px solid rgba(255,255,255,0.10);
  background:linear-gradient(135deg, rgba(255,255,255,0.03), rgba(255,255,255,0.02));
  padding:14px;font-family:var(--sans);
}
.result .row{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px}
.result .label{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:rgba(154,167,182,0.95);margin-bottom:6px}
.result .value{color:rgba(232,238,247,0.95);font-size:13.5px}
.kv{margin-top:8px}
.kv ul{margin:8px 0 0 18px;padding:0}
.kv li{margin:4px 0;color:rgba(232,238,247,0.88)}
.hr{height:1px;background:rgba(255,255,255,0.08);margin:12px 0}
.panelFooter{padding:0 18px 14px}
.footnote{font-family:var(--sans);color:rgba(154,167,182,0.95);font-size:12px}

.accordions{display:flex;flex-direction:column;gap:10px}
.accordion{border:1px solid rgba(255,255,255,0.10);background:rgba(255,255,255,0.02);border-radius:var(--radius2);overflow:hidden}
.accHead{
  width:100%;padding:12px 14px;display:flex;justify-content:space-between;align-items:center;
  background:rgba(255,255,255,0.02);color:rgba(232,238,247,0.92);font-family:var(--sans);font-size:14px;
  border:none;cursor:pointer;
}
.accHead:hover{background:rgba(255,255,255,0.03)}
.accBody{display:none;padding:0 14px 14px}
.accBody.open{display:block}
.accMeta{font-family:var(--sans);color:rgba(154,167,182,0.95);font-size:12.5px;margin-top:8px}
.subAcc{margin-top:10px;border-top:1px solid rgba(255,255,255,0.08);padding-top:10px}
.subAcc details{border:1px solid rgba(255,255,255,0.10);border-radius:14px;background:rgba(255,255,255,0.02);padding:10px 12px;margin:8px 0}
.subAcc summary{font-family:var(--sans);cursor:pointer;color:rgba(232,238,247,0.92);list-style:none}
.subAcc summary::-webkit-details-marker{display:none}
.subAcc summary::after{content:"›";float:right;color:rgba(154,167,182,0.95)}
.subAcc details[open] summary::after{content:"⌄"}

.platform .cards{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.card{border:1px solid rgba(255,255,255,0.10);background:rgba(255,255,255,0.02);border-radius:var(--radius2);padding:14px}
.cardTitle{font-family:var(--sans);font-weight:600;letter-spacing:.06em;text-transform:uppercase;font-size:12px}
.cardSubtitle{font-family:var(--sans);color:rgba(154,167,182,0.95);font-size:13px;margin-top:4px}
.card p{margin:10px 0 0;color:rgba(232,238,247,0.86);font-size:15px}

.diagram{margin-top:16px;border:1px solid rgba(255,255,255,0.10);background:rgba(255,255,255,0.02);border-radius:var(--radius2);padding:14px}
.diagram h3{margin:0 0 10px;font-family:var(--sans);font-size:14px;letter-spacing:.10em;text-transform:uppercase}
pre{
  margin:0;padding:12px;border-radius:14px;border:1px solid rgba(255,255,255,0.08);
  background:rgba(11,13,18,0.55);color:rgba(232,238,247,0.90);
  overflow:auto;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono",monospace;
  font-size:12.5px;line-height:1.4;
}

.contactCard{border:1px solid rgba(255,255,255,0.10);background:rgba(255,255,255,0.02);border-radius:var(--radius2);padding:14px;font-family:var(--sans)}
.spacer{height:10px}
.footer{margin-top:14px;font-family:var(--sans);color:rgba(154,167,182,0.95);font-size:12px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.dot{color:rgba(154,167,182,0.55)}

@media (max-width:980px){
  .layout{grid-template-columns:1fr}
  .rail{position:relative;top:auto}
  h1{font-size:42px}
  .platform .cards{grid-template-columns:1fr}
  .pickerGrid{grid-template-columns:1fr}
}
/* --- Brand / Logo --- */
.brand{display:flex;align-items:center;gap:12px;}
.brand-link{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit;}
.logo{width:42px;height:42px;display:block;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  letter-spacing:.14em;font-weight:600;font-size:12px;color:var(--text);}
.brand-sub{font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  letter-spacing:.10em;font-weight:500;font-size:10px;color:var(--muted);margin-top:4px;}