:root{
  --bg:#0b1e2a;
  --fg:#e6f7fb;
  --accent:#00bcd4;
  --muted:#9ecbd6;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: "Segoe UI", Inter, Roboto, Arial, sans-serif;
  background: radial-gradient(1100px 600px at 70% 10%, #0f3046 0%, var(--bg) 40%) no-repeat, var(--bg);
  color:var(--fg);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.card{
  width:min(720px, 100%);
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.06);
  border-radius:20px;
  padding:32px;
  box-shadow:0 10px 40px rgba(0,0,0,.25);
  text-align:center;
}
.logo{width:88px;height:88px;margin:0 auto 12px;display:block;border-radius:18px}
h1{margin:.2em 0 .4em;font-size:clamp(26px,4vw,36px);color:var(--accent);letter-spacing:.2px}
p{margin:.6em 0;color:var(--muted);font-size:clamp(15px,2.2vw,18px);line-height:1.55}
.actions{margin-top:18px;display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
a.btn{
  padding:12px 18px;border-radius:12px;text-decoration:none;
  border:1px solid rgba(255,255,255,.14);
  transition:transform .15s ease, background .2s ease, border-color .2s ease;
  color:var(--fg);
}
a.btn:hover{transform:translateY(-1px);border-color:rgba(255,255,255,.28)}
a.primary{background:var(--accent); color:#04232c; border-color:transparent; font-weight:600}
small{display:block;margin-top:14px;color:#7fb6c3;opacity:.9}
footer{margin-top:14px;font-size:12px;color:#6ba6b5}