body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: #0a0f0d;
  color: #e0f7fa;
  line-height: 1.6;
}

header {
  background: #1c313a;
  padding: 2rem;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 2.5rem;
  color: #80deea;
}

header p {
  font-size: 1.2rem;
  color: #b2ebf2;
}

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

section {
  margin-bottom: 3rem;
}

h2 {
  color: #4dd0e1;
  font-size: 1.8rem;
  border-bottom: 2px solid #26c6da;
  padding-bottom: 0.5rem;
}

ul {
  padding-left: 1.5rem;
}

li {
  margin-bottom: 1rem;
}

a {
  color: #80cbc4;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: #00bcd4;
  color: #fff;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
  transition: background 0.3s;
}

.button:hover {
  background: #008ba3;
}

footer {
  background: #1c313a;
  text-align: center;
  padding: 1rem;
  color: #80deea;
  font-size: 0.9rem;
}