:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN",
    "Yu Gothic", sans-serif;
  color: #263b35;
  background: #f4f7f3;
}

body {
  margin: 0;
  line-height: 1.8;
}

header,
main,
footer {
  width: min(100% - 32px, 820px);
  margin-inline: auto;
}

header {
  padding-block: 24px 8px;
}

main {
  box-sizing: border-box;
  padding: 28px;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 6px 28px #263b3512;
}

footer {
  padding-block: 18px 32px;
  color: #52645f;
  font-size: 0.9rem;
}

h1,
h2 {
  line-height: 1.35;
}

h1 {
  margin-top: 0;
}

a {
  color: #17644d;
  overflow-wrap: anywhere;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  padding-block: 8px 20px;
}

.notice {
  margin-block: 12px 24px;
  padding: 14px 16px;
  border-left: 4px solid #c47b16;
  background: #fff7e8;
}

.updated {
  color: #52645f;
  font-size: 0.9rem;
}

li + li {
  margin-top: 6px;
}

@media (max-width: 560px) {
  main {
    padding: 20px;
  }
}