/* Static "About" pages: no JavaScript, light and dark by the system setting. */
:root {
  --bg: #ececef;
  --card: #ffffff;
  --text: #1c1c22;
  --muted: #5b5b66;
  --line: #d8d8de;
  --accent: #e63946;
  --btn: #5b6cff;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14141a;
    --card: #1d1d25;
    --text: #ececf1;
    --muted: #a3a3b0;
    --line: #2d2d38;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  max-width: 860px;
  margin: 0 auto;
  padding: 20px 26px 4px;
}
.logo img {
  display: block;
  height: 24px;
  width: auto;
}
nav {
  display: flex;
  align-items: center;
  gap: 16px;
}
a {
  color: var(--btn);
}
.btn {
  background: var(--btn);
  color: #fff;
  text-decoration: none;
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
}
.lang {
  font-size: 14px;
}
main {
  max-width: 860px;
  margin: 16px auto;
  padding: 8px 26px 26px;
  background: var(--card);
  border-radius: 16px;
}
h1 {
  font-size: clamp(26px, 5vw, 38px);
  line-height: 1.2;
  margin: 24px 0 12px;
}
h2 {
  font-size: 20px;
  margin: 32px 0 8px;
}
.lead {
  font-size: 18px;
  color: var(--muted);
}
ul {
  padding-left: 20px;
}
li {
  margin: 6px 0;
}
.lic {
  margin: 22px 0;
  padding-top: 6px;
  border-top: 1px solid var(--line);
}
.lic h2 {
  margin: 14px 0 4px;
}
.lic p {
  margin: 6px 0;
}
.meta {
  color: var(--muted);
  font-size: 14px;
}
details {
  margin: 8px 0;
}
summary {
  cursor: pointer;
  color: var(--btn);
  font-size: 14px;
}
pre {
  margin: 10px 0 0;
  padding: 14px 16px;
  overflow-x: auto;
  background: var(--bg);
  border-radius: 10px;
  font: 12.5px/1.5 ui-monospace, SFMono-Regular, Consolas, monospace;
  white-space: pre-wrap;
  word-break: break-word;
}
footer {
  max-width: 860px;
  margin: 0 auto;
  padding: 8px 26px 36px;
  color: var(--muted);
  font-size: 14px;
}
@media (max-width: 560px) {
  header,
  main,
  footer {
    padding-left: 16px;
    padding-right: 16px;
  }
}