:root { color-scheme: light dark; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background: #0b0f14;
  color: #e7eef7;
}

.card {
  width: min(760px, calc(100% - 2rem));
  padding: 2rem;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 16px;
  background: rgba(255,255,255,0.06);
}

hr {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.14);
  margin: 1.5rem 0;
}

.muted { color: rgba(231,238,247,0.75); }
.small { font-size: 0.95rem; }

a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}