:root {
  color-scheme: light dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f6f7f9;
  color: #18212f;
}

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
}

main {
  width: min(680px, calc(100vw - 40px));
}

.mark {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  margin-bottom: 24px;
  border-radius: 8px;
  background: #1f7a8c;
  color: #fff;
  font-size: 28px;
  font-weight: 700;
}

h1 {
  margin: 0 0 16px;
  font-size: 34px;
  line-height: 1.1;
}

p {
  max-width: 60ch;
  margin: 0 0 16px;
  font-size: 17px;
  line-height: 1.55;
}

.muted {
  color: #5d6978;
}

nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

a {
  color: #145c69;
  font-weight: 700;
}

@media (prefers-color-scheme: dark) {
  :root {
    background: #111821;
    color: #eef3f8;
  }

  .muted {
    color: #aeb9c6;
  }

  a {
    color: #78d4e5;
  }
}