body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.lead {
  font-size: 1.25rem;
  font-weight: 300;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}


.pulse-btn {
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(25, 135, 84, 0.7); }
  70% { transform: scale(1.05); box-shadow: 0 0 0 15px rgba(25, 135, 84, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(25, 135, 84, 0); }
}