:root {
  color-scheme: light dark;
  font-family: ui-sans-serif, system-ui, -apple-system, "PingFang SC", "PingFang TC", "Hiragino Sans", "Noto Sans CJK SC", "Noto Sans CJK TC", "Noto Sans JP", "Noto Sans KR", sans-serif;
  background: #f3efe7;
  color: #171713;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 15% 0%, rgb(255 255 255 / 72%), transparent 38rem),
    #f3efe7;
}

main {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 80px;
}

nav,
.meta,
footer {
  color: #666257;
  font: 14px/1.6 ui-sans-serif, system-ui, sans-serif;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-bottom: 44px;
}

a {
  color: inherit;
  text-underline-offset: 3px;
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(32px, 7vw, 56px);
  font-weight: 500;
  letter-spacing: -0.035em;
}

h2 {
  margin: 38px 0 12px;
  font-size: 22px;
  font-weight: 600;
}

p,
li {
  font-size: 16px;
  line-height: 1.82;
}

ul {
  padding-left: 1.3em;
}

.notice {
  margin: 28px 0;
  padding: 16px 18px;
  border: 1px solid rgb(23 23 19 / 18%);
  background: rgb(255 255 255 / 38%);
}

hr {
  margin: 48px 0;
  border: 0;
  border-top: 1px solid rgb(23 23 19 / 16%);
}

footer {
  margin-top: 54px;
}

@media (prefers-color-scheme: dark) {
  :root {
    background: #161612;
    color: #eee9df;
  }

  body {
    background:
      radial-gradient(circle at 15% 0%, rgb(255 255 255 / 7%), transparent 38rem),
      #161612;
  }

  nav,
  .meta,
  footer {
    color: #aaa59a;
  }

  .notice {
    border-color: rgb(255 255 255 / 18%);
    background: rgb(255 255 255 / 4%);
  }

  hr {
    border-color: rgb(255 255 255 / 14%);
  }
}