:root {
  color-scheme: light dark;
  --paper: #f5faff;
  --ink: #17344d;
  --link: #006aa9;
  --line: #d4e3ee;
}
* {
  box-sizing: border-box;
}
html {
  scroll-padding-top: 24px;
}
body {
  overflow-wrap: anywhere;
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font:
    17px/1.85 system-ui,
    -apple-system,
    'Microsoft YaHei',
    sans-serif;
}
header,
main,
footer {
  width: min(100% - 40px, 880px);
  margin: auto;
}
header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-block: 28px;
}
main {
  padding-bottom: 48px;
}
h1 {
  font-size: clamp(28px, 5vw, 42px);
  line-height: 1.35;
}
h2 {
  font-size: 26px;
  line-height: 1.5;
}
h3 {
  font-size: 21px;
}
p,
a,
h1,
h2,
h3,
h4 {
  overflow-wrap: anywhere;
}
a {
  color: var(--link);
  text-underline-offset: 4px;
}
a:focus-visible {
  outline: 3px solid var(--link);
  outline-offset: 5px;
}
nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  padding-block: 20px;
}
article {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding-top: 28px;
}
.version {
  font-size: 14px;
}
footer {
  border-top: 1px solid var(--line);
  padding-block: 24px;
  font-size: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0e2232;
    --ink: #e6f2fb;
    --link: #83ceff;
    --line: #385365;
  }
}