* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: Arial, sans-serif;
  background-color: #f9f9f9;
  color: #333;
}
.header {
  background: #0b2a4a;
  color: white;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header nav a {
  margin-left: 20px;
  color: white;
  text-decoration: none;
}
.hero {
  position: relative;
  background: url('sample-hero.jpg') center/cover no-repeat;
  height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
}
.hero-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.4);
}
.hero-content {
  position: relative;
  z-index: 1;
}
.hero-logo {
  max-width: 200px;
  margin-bottom: 1rem;
}
.hero-content h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}
.btn {
  background-color: #007db8;
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 5px;
  text-decoration: none;
  margin-top: 1rem;
}
.products {
  padding: 4rem 2rem;
  text-align: center;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.card {
  background: white;
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
.card img {
  width: 100%;
  border-radius: 6px;
}
.promo {
  background: #007db8;
  color: white;
  text-align: center;
  padding: 3rem 1rem;
}
footer {
  background: #0b2a4a;
  color: white;
  text-align: center;
  padding: 2rem 1rem;
}
.footer-links a {
  color: white;
  margin: 0 1rem;
  text-decoration: none;
}