:root {
  color-scheme: light dark;
  --bg: #0b1220;
  --fg: #f4f6fb;
  --accent: #4f7cff;
  --muted: #8a93a8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  text-align: center;
  padding: 24px;
}

.logo {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.logo b {
  color: var(--accent);
}

p {
  color: var(--muted);
  max-width: 480px;
  line-height: 1.5;
  margin: 0;
}

a.btn {
  margin-top: 8px;
  padding: 10px 22px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}