body {
  margin: 0;
  font-family: Arial, sans-serif;
  color: #111;
  background: #fafafa;
}

header, main, footer {
  max-width: 980px;
  margin: auto;
  padding: 24px;
}

nav a {
  margin-right: 16px;
  color: #111;
  text-decoration: none;
  font-weight: bold;
}

.hero {
  padding: 70px 0;
}

h1 {
  font-size: 46px;
  margin-bottom: 12px;
}

p {
  line-height: 1.6;
  font-size: 18px;
}

.card {
  background: white;
  padding: 24px;
  border-radius: 14px;
  margin: 20px 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.button {
  display: inline-block;
  background: #111;
  color: white;
  padding: 12px 18px;
  border-radius: 8px;
  text-decoration: none;
  margin-top: 10px;
}

footer {
  font-size: 14px;
  color: #555;
}