:root {
  --bg0: #020617;
  --bg1: #0f172a;
  --accent: #66fcf1;
  --text: #e2e8f0;
  --muted: #94a3b8;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(102, 252, 241, 0.12), transparent),
    linear-gradient(160deg, var(--bg0), var(--bg1));
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
}

.shell {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.25rem;
}

.brand {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.lede {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}