:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #222;
  background: #fff;
  line-height: 1.8;
}

* { box-sizing: border-box; }

body {
  max-width: 920px;
  margin: 36px auto 64px;
  padding: 0 28px;
  font-size: 15px;
  overflow-wrap: anywhere;
}

h1, h2, h3, h4 { line-height: 1.5; color: #111; }
h1 { margin: 0 0 8px; font-size: 28px; }
h2 { margin: 30px 0 14px; padding-bottom: 6px; border-bottom: 1px solid #ddd; font-size: 21px; }
h3 { margin: 20px 0 6px; font-size: 17px; }
h4 { margin: 16px 0 6px; font-size: 15px; }
p { margin: 8px 0; }
ul, ol { margin: 10px 0; padding-left: 24px; }
li { margin: 5px 0; }
article + article { margin-top: 26px; }
a { color: #195b9b; text-underline-offset: 3px; }
a:hover { color: #103f6e; }
a:focus-visible { outline: 2px solid #195b9b; outline-offset: 3px; }
.entry-meta { margin-top: 0; color: #555; font-size: 14px; }
.profile-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.profile-heading h1 { margin: 0; }
.language-switch { padding: 5px 12px; border: 1px solid #bbb; border-radius: 3px; font-size: 14px; text-decoration: none; }
.language-switch:hover { background: #f5f5f5; }

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin-top: 18px;
  font-size: 14px;
}

@media (max-width: 600px) {
  body { margin-top: 22px; padding-inline: 18px; }
  h1 { font-size: 26px; }
  h2 { font-size: 20px; }
}

@media print {
  body { max-width: none; margin: 0; padding: 0; font-size: 11pt; }
  nav, .language-switch { display: none; }
  a { color: inherit; }
  h2, h3, h4 { break-after: avoid; }
  li { break-inside: avoid; }
}