:root {
  color-scheme: light dark;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
  line-height: 1.75;
  background: #f6f7fb;
  color: #1f2328;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 20px 64px;
  background: #fff;
  min-height: 100vh;
  box-shadow: 0 0 24px rgba(0, 0, 0, 0.05);
}

h1 {
  font-size: 28px;
  line-height: 1.3;
}

h2 {
  margin-top: 32px;
  font-size: 18px;
}

a {
  color: #0658c8;
}

time,
.contact {
  color: #57606a;
}

@media (prefers-color-scheme: dark) {
  body {
    background: #111;
    color: #e6edf3;
  }

  main {
    background: #161b22;
    box-shadow: none;
  }

  a {
    color: #71b2ff;
  }

  time,
  .contact {
    color: #9aa4b2;
  }
}