:root {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172033;
  background: #f4f6fb;
}

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

.challenge-card {
  width: min(92vw, 460px);
  padding: 36px;
  border-radius: 18px;
  background: #ffffff;
  box-shadow: 0 22px 70px rgba(15, 23, 42, 0.14);
  text-align: center;
}

.logo {
  max-width: 180px;
  max-height: 80px;
  margin-bottom: 24px;
}

h1 {
  margin: 0 0 12px;
  font-size: 1.55rem;
}

p {
  line-height: 1.55;
}

.status {
  margin-top: 22px;
  font-size: 0.92rem;
  color: #526078;
}

.loader {
  width: 42px;
  height: 42px;
  margin: 26px auto 0;
  border-radius: 50%;
  border: 4px solid #d7ddea;
  border-top-color: #172033;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}