*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  color-scheme: dark;
  --bg: #0f0f0f;
  --fg: #e5e5e5;
  --muted: #888;
  --font: system-ui, -apple-system, sans-serif;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  min-height: 100vh;
  display: flex;
}

main {
  margin: auto;
  padding: 2rem;
  text-align: center;
}

h1 { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.01em; }

.tagline { margin-top: 0.5rem; color: var(--muted); }

.back {
  display: inline-block;
  margin-top: 2rem;
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
}

.back:hover { color: var(--fg); text-decoration: underline; }