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

:root{
  --ink:#0b1120;
  --muted:#5f6b7a;
  --panel:#ffffff;
  --paper:#f6f8fb;
  --line:rgba(11,17,32,.12);
  --blue:#2563eb;
  --cyan:#06b6d4;
  --green:#22c55e;
  --amber:#f59e0b;
}

*{
  box-sizing:border-box;
}

html,body{
  margin:0;
  padding:0;
  min-height:100%;
}

body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(900px 420px at 12% 0%, rgba(37,99,235,.13), transparent),
    radial-gradient(760px 380px at 88% 4%, rgba(6,182,212,.14), transparent),
    linear-gradient(180deg,#ffffff,var(--paper));
}

.page{
  width:min(1160px,94vw);
  margin:42px auto;
}

.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:0 0 22px;
  border-bottom:1px solid var(--line);
}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-weight:800;
  letter-spacing:-.03em;
}

.brand-mark{
  width:36px;
  height:36px;
  border-radius:9px;
  background:
    linear-gradient(135deg,var(--blue),var(--cyan)),
    linear-gradient(90deg,transparent 46%,rgba(255,255,255,.75) 47%,transparent 50%);
  box-shadow:0 12px 30px rgba(37,99,235,.22);
}

.topbar a{
  color:var(--ink);
  text-decoration:none;
  font-weight:800;
}

.hero{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:24px;
  margin-top:34px;
}

.hero-copy,.system-panel{
  background:rgba(255,255,255,.88);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:0 18px 46px rgba(11,17,32,.10);
  backdrop-filter:blur(10px) saturate(135%);
}

.hero-copy{
  padding:34px;
}

.kicker{
  display:inline-flex;
  align-items:center;
  padding:7px 10px;
  border-radius:9px;
  background:rgba(37,99,235,.10);
  color:#1d4ed8;
  font-size:12px;
  font-weight:800;
  letter-spacing:.08em;
  text-transform:uppercase;
}

h1{
  margin:16px 0 12px;
  font-size:clamp(42px,7vw,74px);
  line-height:.96;
  letter-spacing:-.06em;
}

.lead{
  max-width:720px;
  margin:0;
  color:var(--muted);
  font-size:18px;
  line-height:1.62;
}

.cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-top:24px;
  padding:12px 16px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--blue),var(--cyan));
  color:#fff;
  text-decoration:none;
  font-weight:800;
  box-shadow:0 14px 28px rgba(37,99,235,.22);
  transition:transform .16s ease,box-shadow .16s ease;
}

.cta:hover{
  transform:translateY(-2px);
  box-shadow:0 18px 34px rgba(37,99,235,.28);
}

.system-panel{
  min-height:390px;
  padding:26px;
  display:grid;
  align-content:space-between;
  overflow:hidden;
  position:relative;
}

.system-panel:before{
  content:"";
  position:absolute;
  right:-52px;
  top:-52px;
  width:190px;
  height:190px;
  border-radius:18px;
  background:linear-gradient(135deg,var(--cyan),var(--green));
  opacity:.16;
  transform:rotate(10deg);
}

.endpoint{
  position:relative;
  display:grid;
  gap:10px;
  font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13px;
}

.endpoint-row{
  display:flex;
  justify-content:space-between;
  gap:16px;
  padding:12px;
  border:1px solid var(--line);
  border-radius:10px;
  background:rgba(255,255,255,.76);
}

.endpoint-row span:first-child{
  color:var(--muted);
}

.statement{
  position:relative;
  max-width:420px;
  font-size:30px;
  line-height:1.08;
  letter-spacing:-.045em;
  font-weight:800;
}

.grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  margin-top:22px;
}

.card{
  background:rgba(255,255,255,.82);
  border:1px solid var(--line);
  border-radius:12px;
  padding:18px;
  transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease;
}

.card h2{
  margin:0 0 8px;
  font-size:17px;
  letter-spacing:-.02em;
}

.card p{
  margin:0;
  color:var(--muted);
  line-height:1.52;
  font-size:14px;
}

.card.is-active{
  transform:translateY(-3px);
  border-color:rgba(37,99,235,.42);
  box-shadow:0 14px 30px rgba(11,17,32,.10);
}

footer{
  margin-top:26px;
  color:var(--muted);
  font-size:13px;
}

@media(max-width:920px){
  .hero{
    grid-template-columns:1fr;
  }

  .grid{
    grid-template-columns:repeat(2,1fr);
  }
}

@media(max-width:640px){
  .page{
    margin:24px auto;
  }

  .hero-copy,.system-panel{
    padding:22px;
  }

  .grid{
    grid-template-columns:1fr;
  }
}