* {
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  margin: 0;
  background: #0f172a;
  color: #e5e7eb;
}

.header {
  text-align: center;
  padding: 30px;
  background: #020617;
}

.logo {
  width: 90px;
  margin-bottom: 10px;
}

.container {
  max-width: 1000px;
  margin: auto;
  padding: 20px;
}

.card {
  background: #020617;
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 30px;
}

.card h2 {
  margin-top: 0;
}

button {
  background: #2563eb;
  color: white;
  border: none;
  padding: 10px 16px;
  border-radius: 6px;
  cursor: pointer;
  margin-bottom: 10px;
}

button:hover {
  background: #1d4ed8;
}

pre {
  background: #020617;
  padding: 15px;
  border-radius: 8px;
  overflow-x: auto;
  max-height: 300px;
}

.footer {
  text-align: center;
  padding: 20px;
  background: #020617;
  font-size: 14px;
}