* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Inter, Arial, sans-serif;
}

body {
  min-height: 100vh;
  background: radial-gradient(1200px 600px at top, #0a1b33, #02050b);
  color: #e6f0ff;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
}

.logo {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 1px;
}

.header a {
  color: #b8d4ff;
  text-decoration: none;
  margin-left: 20px;
  transition: 0.2s;
}

.header a:hover {
  color: #ffffff;
}

.header .buy {
  padding: 8px 16px;
  border-radius: 6px;
  background: linear-gradient(135deg, #2f80ff, #1b5cff);
  color: white;
}

.hero {
  height: calc(100vh - 80px);
  display: flex;
  justify-content: center;
  align-items: center;
}

.card {
  background: rgba(10, 25, 50, 0.75);
  border: 1px solid rgba(80, 140, 255, 0.2);
  backdrop-filter: blur(12px);
  padding: 40px 60px;
  border-radius: 14px;
  text-align: center;
  box-shadow: 0 0 80px rgba(50, 120, 255, 0.15);
  animation: fadeIn 1s ease;
}

.card h1 {
  font-size: 32px;
  margin-bottom: 10px;
}

.card p {
  opacity: 0.75;
  margin-bottom: 30px;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, #3b8dff, #1f5cff);
  color: white;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(50, 120, 255, 0.4);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}