body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #e5e7eb;
  text-align: center;
}

h1 {
  margin-top: 20px;
  color: #38bdf8;
}

.subtitle {
  color: #94a3b8;
}

section {
  margin: 40px auto;
  width: 90%;
  max-width: 1000px;
  background: #020617;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0,0,0,0.6);
}

h2 {
  color: #22c55e;
  margin-bottom: 20px;
}