:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #111418;
  --muted: #5b6470;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --fg: #f2f4f7;
    --muted: #9aa3ad;
  }
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  text-align: center;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 7vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

h1 sup {
  font-size: 0.35em;
  font-weight: 400;
  vertical-align: super;
  margin-left: 0.05em;
}

main p {
  margin: 1rem 0 0;
  font-size: clamp(1.05rem, 2.5vw, 1.25rem);
  color: var(--muted);
}

footer {
  padding: 1.5rem 1rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--muted);
}

footer p { margin: 0; }