:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f7f8;
  color: #172027;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
}

.shell {
  width: min(680px, calc(100vw - 40px));
}

h1 {
  margin: 0 0 12px;
  font-size: 40px;
  line-height: 1.1;
  letter-spacing: 0;
}

p {
  margin: 0 0 24px;
  color: #53616b;
  font-size: 18px;
  line-height: 1.5;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 8px;
  background: #1d6f57;
  color: white;
  text-decoration: none;
  font-weight: 600;
}

.button.secondary {
  background: #e8eef1;
  color: #172027;
}

@media (prefers-color-scheme: dark) {
  :root {
    background: #101417;
    color: #eef3f4;
  }

  p {
    color: #a7b3ba;
  }

  .button.secondary {
    background: #263238;
    color: #eef3f4;
  }
}