:root {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at top, #1f2a44, #0f1424 55%);
  color: #f8fafc;
}

.card {
  width: min(92vw, 680px);
  text-align: center;
  padding: 42px 30px;
  border: 1px solid #334155;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.72);
  box-shadow: 0 18px 40px rgba(2, 6, 23, 0.45);
}

.tag {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #93c5fd;
  font-weight: 700;
  font-size: 0.82rem;
}

h1 {
  margin: 12px 0 14px;
  font-size: clamp(2rem, 5vw, 3rem);
}

.subtitle {
  margin: 0;
  color: #cbd5e1;
  font-size: 1.08rem;
}

.contact {
  margin-top: 24px;
  font-size: 0.95rem;
  color: #94a3b8;
}

a {
  color: #7dd3fc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}