body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f7f9fb;
  color: #333;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
}

.navbar {
  background: #fff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: bold;
  color: #111;
}

.navbar nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
}

.navbar nav a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
}

.hero {
  background: #e6f0ff;
  text-align: center;
  padding: 60px 20px;
}

.hero h2 {
  font-size: 2rem;
  color: #000;
}

.hero p {
  font-size: 1rem;
  margin: 10px 0 20px;
}

.btn-dark {
  background: #111;
  color: #fff;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 5px;
}

.products {
  background: #fff;
  padding: 40px 20px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
}

.product-card {
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  padding: 20px;
  max-width: 280px;
  flex: 1 1 280px;
}

.product-card h3 {
  margin-top: 0;
}

.product-card ul {
  padding-left: 20px;
}

.btn-blue {
  display: inline-block;
  margin-top: 15px;
  background: #2563eb;
  color: white;
  padding: 10px 15px;
  text-decoration: none;
  border-radius: 5px;
}

footer {
  background: #f1f1f1;
  text-align: center;
  padding: 20px;
  font-size: 14px;
}