:root{
  --bg1:#0f172a;
  --bg2:#0b1220;
  --card:#ffffff;
  --muted:#64748b;
  --accent:#0ea5a4;
  --accent-dark:#0bada8;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:linear-gradient(180deg,var(--bg1),var(--bg2));
  color:var(--card);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:2rem;
}

.center{max-width:720px;width:100%;text-align:center}

.card{
  background:linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  border-radius:12px;
  padding:2rem;
  box-shadow: 0 6px 30px rgba(2,6,23,0.6);
  border:1px solid rgba(255,255,255,0.04);
}

.brand{
  margin:0;
  font-size:clamp(1.25rem, 2.5vw, 2rem);
  letter-spacing:0.4px;
  color:var(--card);
}

.lead{
  margin:0.6rem 0 0.5rem 0;
  color:var(--muted);
  font-size:1rem;
}

.note{
  margin:0.25rem 0 1rem 0;
  color:var(--muted);
  font-size:0.9rem;
}

.actions{
  display:flex;
  gap:0.75rem;
  justify-content:center;
  margin-top:0.75rem;
  flex-wrap:wrap;
}

.btn{
  display:inline-block;
  text-decoration:none;
  padding:0.6rem 1rem;
  border-radius:8px;
  font-weight:600;
  font-size:0.95rem;
  transition:transform 120ms ease, box-shadow 120ms ease;
  border:1px solid rgba(255,255,255,0.06);
  color:var(--card);
}

.btn:active{transform:translateY(1px)}

.btn.primary{
  background:linear-gradient(90deg,var(--accent),var(--accent-dark));
  box-shadow:0 8px 20px rgba(14,165,164,0.12);
  color:#042c2c;
}

.btn.secondary{
  background:transparent;
  color:var(--card);
  border:1px solid rgba(255,255,255,0.08);
  opacity:0.95;
}

.meta{
  margin-top:0.9rem;
  color:var(--muted);
  font-size:0.85rem;
}

.footer{
  margin-top:1rem;
  color:var(--muted);
  font-size:0.9rem;
}