:root {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0d1117;
  color: #e6edf3;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  text-align: center;
  padding: 1.5rem;
}

main {
  max-width: 32rem;
}

h1 {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}

.tagline {
  font-size: 1.1rem;
  color: #c9d1d9;
  margin: 0 0 0.25rem;
}

.note {
  font-size: 0.95rem;
  color: #7d8590;
  margin: 0 0 2rem;
}

.github-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  border: 1px solid #30363d;
  color: #e6edf3;
  text-decoration: none;
  font-size: 0.95rem;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.github-link:hover {
  border-color: #58a6ff;
  background-color: #161b22;
}

.github-link svg {
  fill: currentColor;
  flex-shrink: 0;
}