:root {
  color-scheme: light;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.card {
  width: min(100%, 38rem);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  text-align: center;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: 1.75rem;
  line-height: 1.2;
}

.tagline {
  margin: 0.9rem 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.5;
}

@media (min-width: 640px) {
  .card {
    padding: 2.25rem;
  }

  h1 {
    font-size: 2.1rem;
  }

  .tagline {
    font-size: 1.1rem;
  }
}