body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0d0f12;
  color: #f5f5f5;
}

.header {
  text-align: center;
  padding: 40px 20px;
  background: #000;
  border-bottom: 2px solid #ffcc00;
}

.intro, .features, .cta {
  max-width: 1100px;
  margin: 40px auto;
  padding: 20px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.feature-card {
  background: #1a1d22;
  padding: 20px;
  border-radius: 10px;
  border: 1px solid #333;
}

.cta-buttons {
  margin-top: 20px;
}

.btn {
  display: inline-block;
  margin: 10px;
  padding: 12px 25px;
  background: #ffcc00;
  color: #000;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
}

.footer {
  text-align: center;
  padding: 20px;
  margin-top: 40px;
  border-top: 1px solid #333;
}