body {
  margin: 0;
  padding: 0;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(180deg, #050a1a 0%, #0a1633 100%);
  color: #f5f5f5;
  text-align: center;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
}
.shield {
  width: 120px;
  margin-bottom: 30px;
  opacity: 0.9;
}
h1 {
  font-size: 1.8rem;
  color: #c0c0c0;
  margin-bottom: 20px;
  line-height: 1.4;
}
h2 {
  font-size: 2rem;
  color: #ffffff;
  margin-bottom: 20px;
  letter-spacing: 2px;
}
.contact {
  font-size: 1rem;
  color: #aaaaaa;
}
.contact a {
  color: #c0c0c0;
  text-decoration: none;
  font-weight: bold;
}
footer {
  margin-bottom: 20px;
  font-size: 0.8rem;
  color: #888;
}
@media (max-width: 600px) {
  .shield { width: 80px; }
  h1 { font-size: 1.2rem; }
  h2 { font-size: 1.5rem; }
  .contact { font-size: 0.9rem; }
}