:root {
  --primary-color: #004080;
  --secondary-color: #f9f9f9;
  --accent-color: #f39200;
  --font-family: 'Segoe UI', Tahoma, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-family);
  background-color: var(--secondary-color);
  color: #333;
}

header {
  background-color: var(--primary-color);
  color: #fff;
  padding: 1rem;
}

header .logo {
  height: 40px;
  vertical-align: middle;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
}

nav a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem;
}

.welcome {
  text-align: center;
  margin: 2rem 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.card img {
  width: 100%;
  height: auto;
  display: block;
}

.card-content {
  padding: 1rem;
  flex: 1;
}

.card-content h3 {
  margin-top: 0;
  font-size: 1.25rem;
  color: var(--primary-color);
}

.card-content p {
  margin: 0.5rem 0;
}

.card-content a {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: bold;
}

.card-content a:hover {
  text-decoration: underline;
}

footer {
  background-color: var(--primary-color);
  color: #fff;
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}

.footer-link {
  color: #fff;
  text-decoration: underline;
}