* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background-color: #121212;
  color: #e0e0e0;
  font-family: 'Segoe UI', sans-serif;
  line-height: 1.6;
  padding: 20px;
}
header {
  text-align: center;
  margin-bottom: 40px;
}
header h1 {
  font-size: 3rem;
  color: #00ffcc;
}
header p {
  font-size: 1.2rem;
  color: #999;
}
section {
  margin-bottom: 40px;
}
h2 {
  border-bottom: 2px solid #00ffcc;
  padding-bottom: 10px;
  margin-bottom: 15px;
}
ul {
  list-style-type: square;
  margin-left: 20px;
}
a {
  color: #00ffcc;
  text-decoration: none;
}
footer {
  text-align: center;
  padding-top: 20px;
  font-size: 0.9rem;
  color: #777;
}