:root {
  --bg: #fbfbf9;
  --fg: #1f2328;
  --muted: #59636e;
  --line: #d9dde3;
  --accent: #b5462a;
  --accent-soft: #fbe9e3;
  --code-bg: #f1f2f4;
  --header-bg: #ffffffcc;
  --width: 1180px;
  font-size: 16px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --fg: #e6e8eb;
    --muted: #9aa4ae;
    --line: #2d333b;
    --accent: #f08a6a;
    --accent-soft: #3a2721;
    --code-bg: #1f2429;
    --header-bg: #15171acc;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Segoe UI", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre, kbd {
  font-family: "Cascadia Code", "JetBrains Mono", Consolas, "Courier New", monospace;
  font-size: 0.92em;
}
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 4px; }
pre {
  background: var(--code-bg);
  padding: 0.9rem 1rem;
  border-radius: 8px;
  overflow: auto;
  line-height: 1.5;
}
pre code { background: none; padding: 0; }
blockquote {
  margin: 1rem 0;
  padding: 0.6rem 1rem;
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 8px 8px 0;
}
blockquote p { margin: 0.3rem 0; }
table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: 0.95em; }
th, td { border: 1px solid var(--line); padding: 0.45rem 0.6rem; vertical-align: top; text-align: left; }
th { background: var(--code-bg); }
.table-scroll { overflow-x: auto; }
.key-table td:first-child { white-space: nowrap; }
.key-table .key-text {
  margin: 0;
  padding: 0.4rem 0.5rem;
  max-width: 28rem;
  max-height: 12rem;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.85em;
}
hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }
img { max-width: 100%; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  max-width: var(--width);
  margin: 0 auto;
  padding: 0.6rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}
.brand { display: inline-flex; align-items: center; gap: 0.5rem; font-weight: 600; color: var(--fg); }
.brand img { border-radius: 6px; }
.site-nav { display: flex; gap: 0.2rem; flex-wrap: wrap; }
.site-nav a {
  color: var(--fg);
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
}
.site-nav a.active, .site-nav a:hover { background: var(--accent-soft); text-decoration: none; }
.site-header__right { margin-left: auto; display: flex; gap: 1rem; align-items: center; font-size: 0.92em; }
.languages .active { font-weight: 600; }

.page {
  max-width: var(--width);
  margin: 0 auto;
  padding: 1.5rem 1.2rem 3rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 2.5rem;
}
.content { min-width: 0; }
.content h1 { font-size: 2rem; line-height: 1.25; margin: 0.5rem 0 1rem; }
.content h2 { font-size: 1.45rem; margin-top: 2.4rem; padding-bottom: 0.3rem; border-bottom: 1px solid var(--line); }
.content h3 { font-size: 1.15rem; margin-top: 1.8rem; }
.content h2 .anchor, .content h3 .anchor, .content h1 .anchor, .content h4 .anchor { color: inherit; }
.content h2 .anchor:hover::after, .content h3 .anchor:hover::after { content: " #"; color: var(--muted); }
.toc {
  position: sticky;
  top: 4.2rem;
  align-self: start;
  font-size: 0.9em;
  max-height: calc(100vh - 5rem);
  overflow: auto;
}
.toc h3 { margin: 0.4rem 0 0.5rem; font-size: 0.85em; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
.toc ul { list-style: none; padding: 0; margin: 0; }
.toc li { margin: 0.25rem 0; }
.toc a { color: var(--muted); }
.toc a:hover { color: var(--accent); }
.site-footer {
  max-width: var(--width);
  margin: 0 auto;
  padding: 1.5rem 1.2rem 2.5rem;
  color: var(--muted);
  font-size: 0.88em;
  border-top: 1px solid var(--line);
}
.landing { text-align: center; padding: 4rem 1rem; }
.downloads li { margin: 0.3rem 0; }
@media (max-width: 900px) {
  .page { grid-template-columns: 1fr; }
  .toc { position: static; max-height: none; order: -1; border: 1px solid var(--line); border-radius: 8px; padding: 0.6rem 0.9rem; }
  .site-header__right { margin-left: 0; }
}