body {
  background: #000;
  color: #fff;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.plan-card {
  background: #111;
  padding: 35px 25px;
  border-radius: 18px;
  text-align: center;
  max-width: 380px;
  width: 100%;
  box-shadow: 0 0 25px rgba(255,145,0,0.25);
}

h1 {
  color: #ff9100;
  margin-bottom: 15px;
}

.price {
  margin: 20px 0 25px;
}

.amount {
  font-size: 3rem;
  font-weight: 800;
  color: #ffb300;
}

.currency {
  font-size: 1.2rem;
  margin-left: 6px;
  color: #ffd180;
}

ul {
  list-style: none;
  padding: 0;
  margin-bottom: 30px;
}

ul li {
  padding: 8px 0;
  color: #ffcc80;
}

.btn {
  display: inline-block;
  padding: 14px 35px;
  background: #ff9100;
  color: #000;
  font-weight: 700;
  border-radius: 35px;
  text-decoration: none;
  box-shadow: 0 0 18px #ff9100;
  transition: all 0.3s ease;
}

.btn:hover {
  background: #ffb347;
  box-shadow: 0 0 30px #ffb347;
  transform: scale(1.1);
}

/* pulse animation */
.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 12px #ff9100; }
  50% { box-shadow: 0 0 28px #ffcc00; }
  100% { box-shadow: 0 0 12px #ff9100; }
}