body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #0f1c2e;
  color: #e0e0e0;
  margin: 0;
  padding: 0;
}

header {
  background-color: #1a2a40;
  padding: 2rem;
  text-align: center;
  border-bottom: 2px solid #3e5c7c;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  color: #ffd700;
}

.tagline {
  font-style: italic;
  color: #a0c4ff;
}

nav a {
  margin: 0 1rem;
  color: #ffdd57;
  text-decoration: none;
  font-weight: bold;
}

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

main {
  padding: 2rem;
  max-width: 800px;
  margin: auto;
}

section {
  margin-bottom: 2rem;
}

h2 {
  color: #ffdd57;
  border-bottom: 1px solid #3e5c7c;
  padding-bottom: 0.3rem;
}

code, pre {
  background-color: #1f2f45;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  color: #ffecb3;
}

footer {
  background-color: #1a2a40;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  color: #888;
}