:root {
  color-scheme: light dark;
  --paper: #f7f7f2;
  --card: #fff;
  --ink: #252724;
  --muted: #55584f;
  --line: #dfe1d7;
  --link: #a43c15;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font:
    16px/1.7 "Segoe UI",
    Arial,
    sans-serif;
}
a {
  color: var(--link);
  text-underline-offset: 3px;
  overflow-wrap: anywhere;
}
a:focus-visible {
  outline: 3px solid #e55727;
  outline-offset: 5px;
}
header {
  max-width: 1000px;
  margin: auto;
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: block;
  background: #fff;
  border: 1px solid #e6e7df;
  border-radius: 12px;
  padding: 8px 16px;
}
.brand img {
  display: block;
  width: 180px;
  max-width: 100%;
  height: auto;
}
.back {
  font-weight: 600;
  font-size: 14px;
}
main {
  max-width: 900px;
  margin: 0 auto 32px;
  padding: 36px 44px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--card);
}
h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.2;
  margin: 0 0 16px;
}
h2 {
  font-size: 22px;
  line-height: 1.4;
  margin: 0 0 14px;
}
p {
  margin: 0 0 16px;
}
.intro {
  font-size: 18px;
  color: var(--muted);
}
.version {
  font-size: 14px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  padding-bottom: 24px;
}
section {
  padding-top: 24px;
  scroll-margin-top: 20px;
}
ul {
  padding-left: 24px;
}
li {
  margin-bottom: 14px;
}
aside {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  margin-top: 24px;
}
footer {
  max-width: 900px;
  margin: auto;
  padding: 0 24px 36px;
  color: var(--muted);
  font-size: 14px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
footer nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
[aria-current="page"] {
  font-weight: 700;
}
.skip-link {
  position: absolute;
  top: -100px;
  left: 24px;
  background: var(--card);
  padding: 12px;
  z-index: 2;
}
.skip-link:focus {
  top: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #171e18;
    --card: #222c23;
    --ink: #f8faf4;
    --muted: #ced4c9;
    --line: #455244;
    --link: #ffab87;
  }
}
@media (max-width: 600px) {
  header {
    padding: 16px;
    gap: 12px;
  }
  .brand {
    padding: 8px 10px;
  }
  .brand img {
    width: 140px;
  }
  .back {
    max-width: 110px;
  }
  main {
    margin: 0 12px 24px;
    padding: 24px 20px;
    border-radius: 16px;
  }
  h2 {
    font-size: 20px;
  }
  footer {
    padding: 0 20px 24px;
  }
}