:root {
  color-scheme: light dark;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f4f6f8;
  padding: 24px;
  box-sizing: border-box;
}

@media (prefers-color-scheme: dark) {
  body {
    background: #14171a;
  }
}

.card {
  max-width: 420px;
  width: 100%;
  background: #ffffff;
  border-radius: 16px;
  padding: 32px 28px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  text-align: center;
}

@media (prefers-color-scheme: dark) {
  .card {
    background: #1f2327;
    box-shadow: none;
  }
}

h1 {
  font-size: 22px;
  margin: 0 0 12px;
  color: #1a1a1a;
}

@media (prefers-color-scheme: dark) {
  h1 {
    color: #f2f2f2;
  }
}

.message {
  font-size: 16px;
  line-height: 1.5;
  color: #333;
  margin-bottom: 24px;
}

@media (prefers-color-scheme: dark) {
  .message {
    color: #cfcfcf;
  }
}

.button {
  display: inline-block;
  background: #2e7d32;
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 16px;
}

.note {
  margin-top: 20px;
  font-size: 13px;
  color: #777;
}