body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f5f5;
  color: #333;
}
header {
  background: #fff;
  padding: 1em;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}
nav a {
  margin-right: 1em;
  text-decoration: none;
  color: #333;
}
.hero {
  padding: 2em;
  background: #e8f0fe;
  text-align: center;
}
.hero h1 {
  font-size: 2em;
}
.cta {
  display: inline-block;
  padding: 0.5em 1em;
  background: #0073e6;
  color: #fff;
  text-decoration: none;
  margin-top: 1em;
}
.subscribe form {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.subscribe input {
  padding: 0.5em;
  margin-bottom: 0.5em;
}
footer {
  text-align: center;
  padding: 1em;
  background: #ddd;
  margin-top: 2em;
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1em;
  padding: 1em;
}
.product-card {
  background: #fff;
  padding: 1em;
  border: 1px solid #ccc;
  text-align: center;
}