body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #ffffff;
  color: #111111;
  line-height: 1.5;
}

header, section {
  padding: 40px 10%;
}

header {
  background-color: #0B1F3A;
  color: #ffffff;
}

nav {
  background-color: #0B1F3A;
  padding: 10px 10%;
}

nav a {
  color: #ffffff;
  margin-right: 20px;
  text-decoration: none;
  font-weight: bold;
}

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

h1, h2, h3 {
  margin-top: 0;
}

h1 {
  font-size: 2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h2.section-title {
  border-bottom: 2px solid #0B1F3A;
  padding-bottom: 5px;
  margin-bottom: 20px;
}

.tagline {
  font-size: 1.1rem;
  margin: 0.5em 0;
}

.badge {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-top: 0.5em;
  color: #FFD700;
}

.core-list, .simple-list {
  list-style: none;
  padding-left: 0;
  margin: 0.5em 0 1.5em 0;
}

.core-list li::before,
.simple-list li::before {
  content: "• ";
  color: #0B1F3A;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: #1F6FEB;
  color: #ffffff;
  text-decoration: none;
  border-radius: 4px;
  font-size: 0.95rem;
  margin-top: 10px;
}

.btn:hover {
  background-color: #1550aa;
}

footer {
  background-color: #0B1F3A;
  color: #ffffff;
  padding: 20px 10%;
  font-size: 0.85rem;
  margin-top: 40px;
}

a {
  color: #1F6FEB;
}

@media (max-width: 768px) {
  header, section, footer, nav {
    padding: 30px 6%;
  }
}