body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #0a0a0a;
  color: #eaeaea;
}

header {
  padding: 20px;
  border-bottom: 1px solid #222;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 20px;
  letter-spacing: 3px;
}

nav a {
  color: #888;
  margin-left: 20px;
  text-decoration: none;
}

nav a:hover {
  color: #fff;
}

.container {
  max-width: 900px;
  margin: auto;
  padding: 60px 20px;
}

h1, h2 {
  margin-bottom: 20px;
}

p {
  color: #bbb;
  line-height: 1.6;
}

.card {
  border: 1px solid #222;
  padding: 20px;
  margin-top: 20px;
}

button {
  background: #fff;
  color: #000;
  border: none;
  padding: 10px 20px;
  cursor: pointer;
}

button:hover {
  background: #ccc;
}

footer {
  padding: 40px;
  text-align: center;
  color: #666;
  border-top: 1px solid #111;
}