* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f4f7fa;
  color: #222;
  line-height: 1.6;
}
header {
  background-color: #004d99;
  color: #fff;
  padding: 2rem 1rem;
  text-align: center;
}
header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}
header nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}
header nav ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s;
}
header nav ul li a:hover {
  color: #ffcc00;
}
section {
  padding: 3rem 2rem;
  max-width: 1200px;
  margin: auto;
}
section h2 {
  font-size: 2rem;
  color: #004d99;
  margin-bottom: 1rem;
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}
.product {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 1rem;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  transition: transform 0.2s ease;
}
.product:hover {
  transform: scale(1.03);
}
.product img {
  max-width: 100%;
  height: auto;
  margin-bottom: 1rem;
}
footer {
  background-color: #eee;
  text-align: center;
  padding: 1.5rem;
  font-size: 0.9rem;
  color: #444;
  margin-top: 2rem;
}
a {
  color: #004d99;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}