:root {
  color-scheme: light dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Noto Sans SC", "Noto Sans KR", sans-serif;
  background: #f5f7f9;
  color: #1a1a1a;
}

@media (prefers-color-scheme: dark) {
  body {
    background: #14181c;
    color: #eef1f3;
  }
}

main {
  max-width: 640px;
  width: 100%;
  text-align: center;
}

.logo {
  height: 48px;
  margin-bottom: 1.5rem;
}

h1 {
  font-size: 1.75rem;
  margin: 0 0 1rem;
}

p.intro {
  font-size: 1.05rem;
  line-height: 1.6;
  margin: 0 0 2rem;
}

.cta {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: #003a5d;
  color: #ffffff;
  text-decoration: none;
  border-radius: 4px;
  font-weight: 600;
}

.cta:hover {
  background: #00507f;
}

footer {
  margin-top: 3rem;
  font-size: 0.85rem;
  opacity: 0.75;
}

footer a {
  color: inherit;
}

footer .sep {
  margin: 0 0.5rem;
}