body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, sans-serif;
  background-color: #000;
  color: #fff;
}
h1 {
  font-size: 2.25rem;
  font-weight: 700;
  color: #f3f4f6;
  margin-bottom: 1rem;
}
h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #4ade80;
  margin-bottom: 0.5rem;
}
p {
  color: #d1d5db;
}
footer {
  color: #718096;
  margin-top: 4rem;
  text-align: center;
  font-size: 0.875rem;
}
.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem;
  min-height: 100vh;
}
.card {
  background-color: #1f2937;
  padding: 1.5rem;
  border-radius: 1rem;
  max-width: 42rem;
  margin: 0 auto 2rem auto;
  box-shadow: 0 0 10px rgba(0,0,0,0.3);
}
img.logo {
  width: 12rem;
  margin: 0 auto 1.5rem auto;
}