:root {
  --bg: #0d1117;
  --card: #161b22;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: Inter, Segoe UI, system-ui, sans-serif;
  background:
    radial-gradient(circle at 20% 10%, #1f3b5c 0%, transparent 40%),
    var(--bg);
  color: var(--text);
}

.card {
  width: min(36rem, calc(100% - 2rem));
  padding: 2.5rem;
  background: var(--card);
  border: 1px solid #30363d;
  border-radius: 16px;
  text-align: center;
}

.badge {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  background: #1f6feb33;
  color: var(--accent);
  font-size: 0.85rem;
}

h1 {
  font-size: clamp(2rem, 6vw, 3rem);
  margin-bottom: 0.75rem;
}

.lead {
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

a {
  color: var(--accent);
}