:root {
  color-scheme: light dark;
  --bg: #0b0f1a;
  --card-bg: #131a2b;
  --text: #eef1f8;
  --muted: #93a0b8;
  --accent: #6ea8fe;
  --border: #223049;
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(circle at 50% 0%, #172038 0%, var(--bg) 60%);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

main {
  width: 100%;
  max-width: 480px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px 36px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.mark {
  color: var(--accent);
  margin-bottom: 20px;
}

h1 {
  font-size: 2rem;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.tagline {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.5;
  margin: 0 0 28px;
}

.status {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--accent);
  background: rgba(110, 168, 254, 0.1);
  border: 1px solid rgba(110, 168, 254, 0.25);
  border-radius: 999px;
  padding: 6px 16px;
  margin: 0;
}