* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: #0b0b0c;
  color: #ededed;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
}
main { max-width: 520px; padding: 2rem; }
h1 { font-size: 2.4rem; font-weight: 600; margin: 0 0 1rem; letter-spacing: -0.02em; }
p { color: #a1a1aa; line-height: 1.6; margin: 0 0 0.6rem; }
nav { margin-top: 1.5rem; display: flex; gap: 1.25rem; }
a { color: #ededed; text-decoration: none; border-bottom: 1px solid #3f3f46; padding-bottom: 2px; }
a:hover { border-color: #ededed; }
h1 { display: flex; align-items: center; justify-content: space-between; }