/* Reset some basic elements */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f5f7fa;
  color: #333;
  line-height: 1.6;
}

/* Header */
header {
  background-color: #003366;
  color: #fff;
  padding: 20px;
  text-align: center;
}

header h1 {
  font-size: 24px;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 15px;
}

nav ul li a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 500;
}

nav ul li a:hover {
  text-decoration: underline;
}

/* Main container */
main {
  max-width: 960px;
  margin: 30px auto;
  padding: 20px;
  background-color: #ffffff;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
}

/* Section spacing */
section {
  margin-bottom: 40px;
}

/* Headings */
h2 {
  color: #005eb8;
  font-size: 26px;
  margin-bottom: 15px;
}

h3 {
  color: #003366;
  font-size: 20px;
  margin: 30px 0 10px;
}

/* Paragraphs */
p {
  margin-bottom: 15px;
  font-size: 16px;
}

/* Lists */
ul {
  margin-left: 20px;
  margin-bottom: 20px;
}

ul li {
  margin-bottom: 8px;
  font-size: 16px;
}

/* Links */
a {
  color: #0073e6;
  text-decoration: none;
  transition: color 0.2s ease-in-out;
}

a:hover {
  text-decoration: underline;
  color: #005bb5;
}

/* Footer */
footer {
  text-align: center;
  background-color: #003366;
  color: #fff;
  padding: 20px;
  margin-top: 40px;
  font-size: 14px;
}

/* Responsive layout */
@media (max-width: 768px) {
  nav ul {
    flex-direction: column;
    align-items: center;
  }

  main {
    padding: 15px;
  }

  h2 {
    font-size: 22px;
  }

  h3 {
    font-size: 18px;
  }
}