:root {
  --primary: #0077cc;
  --light: #f4f9ff;
  --dark: #333;
  --accent: #004a99;
  --card-bg: #ffffff;
  --nav-bg: #e6f1fb;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--light);
  color: var(--dark);
  line-height: 1.6;
}

header {
  background-color: var(--primary);
  color: white;
  padding: 2rem 1rem;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

header p {
  font-size: 1.2rem;
  opacity: 0.9;
}

nav {
  background-color: var(--nav-bg);
  padding: 1rem;
  text-align: center;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
}

nav a {
  color: var(--accent);
  text-decoration: none;
  margin: 0 1rem;
  font-weight: 600;
  position: relative;
  transition: color 0.3s;
}

nav a:hover {
  color: var(--primary);
}

section {
  padding: 2rem;
  max-width: 1000px;
  margin: auto;
}

.card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
}

h2 {
  margin-bottom: 1rem;
  color: var(--primary);
}

ul {
  padding-left: 1.2rem;
}

li {
  margin-bottom: 0.5rem;
}

footer {
  text-align: center;
  padding: 1rem;
  background-color: var(--nav-bg);
  color: #555;
}