body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f8f9fb;
  color: #1a1a1a;
}

header {
  background: white;
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #e5e7eb;
}

nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #1a1a1a;
  font-weight: 500;
}

.hero {
  padding: 120px 40px;
  text-align: center;
  background: linear-gradient(135deg, #1f2937, #111827);
  color: white;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 20px;
}

.hero p {
  font-size: 20px;
  opacity: 0.9;
}

section {
  padding: 80px 40px;
  max-width: 900px;
  margin: auto;
}

.button {
  display: inline-block;
  padding: 14px 28px;
  background: #2563eb;
  color: white;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  margin-top: 20px;
}

footer {
  padding: 40px;
  text-align: center;
  background: #111827;
  color: white;
  margin-top: 80px;
}