:root {
  --bg: #f8fafc;
  --bg-alt: #e2e8f0;
  --text: #0f172a;
  --muted: #475569;
  --line: rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(148, 163, 184, 0.22), transparent 28%),
    linear-gradient(135deg, var(--bg) 0%, var(--bg-alt) 100%);
}

.shell {
  display: grid;
  place-content: center;
  min-height: 100vh;
  padding: 2rem;
  text-align: center;
}

.brand {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  padding: 2rem 2.5rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.58);
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 0.95;
}

@media (max-width: 640px) {
  h1 {
    padding: 1.5rem 1.25rem;
    border-radius: 20px;
  }
}