html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #131313;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 24px;
  text-align: center;
}
@media (prefers-color-scheme: light) {
  body { background: #f1f1f1; color: #000; }
}
.icon { font-size: 64px; opacity: 0.85; }
.title { font-size: 20px; font-weight: 600; }
.sub { font-size: 14px; opacity: 0.7; max-width: 320px; line-height: 1.5; }