* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: linear-gradient(135deg, #103a7a, #1e5bb8);
}
.wrap { text-align: center; color: #fff; }
.card {
  background: #fff;
  color: #1a2233;
  border-radius: 14px;
  padding: 40px 36px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  min-width: 300px;
}
.card h1 { margin: 0 0 8px; font-size: 1.5rem; }
.card p { color: #64748b; margin-bottom: 20px; }
.btn {
  display: inline-block;
  background: #1e5bb8;
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
}
.btn:hover { background: #103a7a; }
footer { margin-top: 18px; font-size: 0.8rem; opacity: 0.85; }