* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, sans-serif;
  background: #111827;
  color: #f9fafb;
  line-height: 1.6;
}

.hero {
  min-height: 100vh;
  display: grid;
  place-content: center;
  text-align: center;
  padding: 2rem;
  background: linear-gradient(135deg, #111827, #1f2937);
}

h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

h2 {
  margin-bottom: 1rem;
}

p {
  max-width: 700px;
  margin: 0 auto 1rem;
}

section {
  padding: 4rem 2rem;
  text-align: center;
}

.btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.9rem 1.4rem;
  background: #22c55e;
  color: #111827;
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
}