:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", sans-serif;
  color: #173247;
  background: #e5f0f7;
}
body {
  margin: 0;
  line-height: 1.75;
}
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 22px 72px;
}
article {
  background: rgba(255, 255, 255, .92);
  border-radius: 24px;
  padding: 28px;
  box-shadow: 0 12px 40px rgba(23, 50, 71, .12);
}
h1 { line-height: 1.3; }
h2 { margin-top: 2em; font-size: 1.2rem; }
a { color: #1768a6; }
nav { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 16px; }
.meta { color: #617584; font-size: .9rem; }