:root {
  --bg: #f6f6f6;
  --page: #ffffff;
  --text: #202122;
  --muted: #54595d;
  --link: #3366cc;
  --line: #a2a9b1;
  --box: #f8f9fa;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
header {
  display: flex; align-items: center; gap: 16px;
  padding: 10px 20px; border-bottom: 1px solid var(--line); background: var(--page);
}
.logo { display: flex; align-items: center; gap: 10px; color: var(--text); }
.logo img { width: 40px; height: 40px; }
.logo b { font: 600 22px/1 Georgia, "Times New Roman", serif; letter-spacing: .5px; }
.logo small { display: block; color: var(--muted); font-size: 12px; }
.search { margin-left: auto; }
.langs { font-size: 13px; color: var(--muted); white-space: nowrap; }
.search input {
  width: 260px; max-width: 40vw; padding: 6px 10px;
  border: 1px solid var(--line); border-radius: 2px; font: inherit;
}
.wrap { display: flex; max-width: 1180px; margin: 0 auto; }
nav { flex: 0 0 170px; padding: 18px 14px; font-size: 14px; }
nav h4 { margin: 14px 0 4px; color: var(--muted); font-size: 12px; font-weight: 600; text-transform: uppercase; }
nav ul { list-style: none; margin: 0; padding: 0; }
nav li { margin: 3px 0; }
main {
  flex: 1; min-width: 0; background: var(--page);
  border: 1px solid var(--line); border-top: 0; padding: 18px 28px 36px;
}
h1, h2 { font-family: Georgia, "Times New Roman", serif; font-weight: normal; border-bottom: 1px solid var(--line); }
h1 { font-size: 28px; margin: 6px 0 14px; }
h2 { font-size: 21px; margin: 26px 0 10px; }
.sub { color: var(--muted); font-size: 13px; margin-top: -8px; }
.infobox {
  float: right; width: 270px; margin: 0 0 14px 20px;
  background: var(--box); border: 1px solid var(--line); font-size: 13px; border-collapse: collapse;
}
.infobox caption { font-weight: 600; padding: 6px; background: #dfe6f2; border: 1px solid var(--line); border-bottom: 0; }
.infobox th, .infobox td { padding: 4px 8px; vertical-align: top; text-align: left; border-top: 1px solid #e3e6ea; }
.infobox th { width: 42%; font-weight: 600; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; }
.card { border: 1px solid var(--line); background: var(--box); padding: 10px 12px; }
.card b { display: block; }
.card span { color: var(--muted); font-size: 13px; }
.featured { border: 1px solid #a3bfb1; background: #f5fffa; padding: 4px 16px 10px; margin: 12px 0; }
code { background: #eaecf0; padding: 1px 4px; border-radius: 2px; font-size: 13px; }
footer { max-width: 1180px; margin: 0 auto; padding: 14px 20px 30px 190px; color: var(--muted); font-size: 12px; }
@media (max-width: 760px) {
  .wrap { display: block; }
  nav { display: none; }
  main { border-left: 0; border-right: 0; padding: 14px 16px 28px; }
  .infobox { float: none; width: 100%; margin: 0 0 14px; }
  .search input { width: 140px; }
  footer { padding-left: 16px; }
}