* { box-sizing: border-box; }

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

body {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #d9dbde;
  color: #2e3136;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  text-align: center;
}

main { padding: 2rem; }

h1 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.01em;
}

p { margin: 0; font-size: 1.05rem; opacity: 0.7; }

@media (prefers-color-scheme: dark) {
  body { background: #2b2d31; color: #e4e5e8; }
}