:root {
  color-scheme: dark;
  --bg1: #0f172a;
  --bg2: #1e293b;
  --card: #111827cc;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #22d3ee;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 20%, #334155 0%, transparent 40%),
              radial-gradient(circle at 80% 80%, #0ea5e9 0%, transparent 35%),
              linear-gradient(135deg, var(--bg1), var(--bg2));
}

.container {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: min(680px, 100%);
  text-align: center;
  background: var(--card);
  border: 1px solid #334155;
  border-radius: 16px;
  padding: 44px 32px;
  backdrop-filter: blur(8px);
  box-shadow: 0 16px 40px rgb(0 0 0 / 35%);
}

.badge {
  display: inline-block;
  margin: 0 0 14px;
  padding: 6px 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 40%, white);
  border-radius: 999px;
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(1.8rem, 3vw, 2.7rem);
}

p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}