:root {
  --sidebar: 270px;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  font-size: 16px;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.8;
}
[hidden] {
  display: none !important;
}
a {
  color: inherit;
  text-underline-offset: 4px;
}
a:hover {
  color: var(--accent-strong);
}
button,
input {
  font: inherit;
}
button {
  cursor: pointer;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip {
  position: fixed;
  top: -100px;
  left: 290px;
  background: var(--ground);
  padding: 12px;
  z-index: 50;
}
.skip:focus {
  top: 10px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 1.2rem;
  font-weight: 750;
  text-decoration: none;
  letter-spacing: -0.5px;
  white-space: nowrap;
}
.brand img {
  flex-shrink: 0;
  margin-right: 5px;
}
.brand span {
  font-weight: 450;
  color: var(--muted);
}
.site-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar);
  background: var(--ground);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  z-index: 30;
}
.sidebar-head {
  padding: 26px 22px 19px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.directory-search {
  padding: 0 18px 16px;
}
.directory-search label {
  display: none;
}
.directory-search input {
  width: 100%;
  background: var(--ground);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 8px 12px;
  color: var(--ink);
  font-size: 0.875rem;
}
.directory-search input::placeholder {
  color: var(--muted);
}
.sidebar-scroll {
  overflow-y: auto;
  overscroll-behavior: contain;
  flex: 1;
  min-height: 0;
  padding: 0 16px 24px;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}
#site-navigation {
  display: grid;
  gap: 2px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 22px;
}
#site-navigation a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 12px;
  border-radius: 6px;
  font-size: 0.875rem;
  text-decoration: none;
  color: var(--muted);
}
#site-navigation a:hover {
  background: var(--hover);
}
#site-navigation a[aria-current="page"] {
  color: var(--ink);
  background: var(--ground);
}
.nav-mark {
  color: var(--accent);
}
.tree-label {
  font-size: 0.8125rem;
  color: var(--subtle);
  padding: 0 12px 10px;
}
#topic-tree details {
  margin: 0 0 9px;
}
#topic-tree summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  padding: 8px 12px;
  color: var(--ink);
  font-size: 0.875rem;
}
#topic-tree summary::-webkit-details-marker {
  display: none;
}
#topic-tree summary::after {
  content: "›";
  color: var(--muted);
}
#topic-tree details[open] > summary::after {
  content: "⌄";
}
.tree-children {
  border-left: 1px solid var(--line);
  margin: 2px 0 12px 14px;
  padding-left: 6px;
}
.tree-children a {
  display: block;
  padding: 7px 10px;
  margin: 2px 0;
  border-radius: 5px;
  color: var(--muted);
  font-size: 0.875rem;
  text-decoration: none;
  line-height: 1.6;
  position: relative;
}
.tree-children a:hover {
  background: var(--hover);
  color: var(--ink);
}
.tree-children a[aria-current="page"] {
  background: var(--selected);
  color: var(--accent);
}
.tree-children a[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: -7px;
  width: 2px;
  background: var(--accent);
  top: 8px;
  bottom: 8px;
}
.sidebar-foot {
  border-top: 1px solid var(--line);
  padding: 16px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
}
.sidebar-foot a {
  text-decoration: none;
}
.sidebar-foot span {
  color: var(--muted);
}
.search-count,
.search-empty {
  color: var(--muted);
  font-size: 0.875rem;
  padding: 8px 10px;
}
.search-result {
  display: block;
  text-decoration: none;
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  border-radius: 4px;
}
.search-result:hover {
  background: var(--hover);
}
.search-result strong {
  overflow-wrap: anywhere;
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
}
.search-result span {
  display: block;
  margin-top: 5px;
  font-size: 0.8125rem;
  color: var(--muted);
}
.page-shell {
  margin-left: var(--sidebar);
}
.review-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--paper);
  backdrop-filter: blur(12px);
  height: 58px;
  padding: 0 42px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--subtle);
  font-size: 0.8125rem;
}
.review-bar strong {
  font-weight: 500;
  color: var(--muted);
}
.workspace {
  max-width: 1480px;
  margin: auto;
  padding: 0 48px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}
.has-toc .workspace {
  grid-template-columns: minmax(0, 1fr) 172px;
}
main {
  min-width: 0;
  min-height: 75vh;
  outline: none;
}
.wrap {
  padding: 54px 0 30px;
  max-width: 1140px;
  margin: auto;
}
.page-toc {
  position: sticky;
  top: 86px;
  padding-top: 54px;
  font-size: 0.8125rem;
  max-height: calc(100vh - 110px);
  overflow: auto;
  scrollbar-width: thin;
}
.page-toc p {
  color: var(--muted);
  margin: 0 0 14px;
}
.page-toc nav {
  display: grid;
  border-left: 1px solid var(--line);
}
.page-toc a {
  text-decoration: none;
  color: var(--muted);
  padding: 7px 0 7px 16px;
  line-height: 1.6;
  border-left: 2px solid transparent;
  margin-left: -1px;
}
.page-toc a[aria-current="location"] {
  color: var(--accent);
  border-color: var(--accent);
}
h1,
h2,
h3 {
  line-height: 1.4;
  margin: 0;
}
h1 {
  font-size: clamp(2rem, 3vw, 3.1rem);
  font-weight: 650;
  letter-spacing: -1.2px;
}
h2 {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.3px;
  scroll-margin-top: 100px;
}
h3 {
  font-size: 1.0625rem;
  font-weight: 550;
}
p {
  margin: 12px 0;
}
.eyebrow {
  font-size: 0.8125rem;
  color: var(--accent);
  margin: 0 0 15px;
  letter-spacing: 0.8px;
}
.lead {
  color: var(--muted);
  font-size: 1.0625rem;
  max-width: 780px;
  margin: 20px 0 28px;
}
.buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 24px 0;
}
.button {
  display: inline-block;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 10px 18px;
  text-decoration: none;
  font-size: 0.9375rem;
  background: var(--ground);
}
.button.primary {
  color: #24170f;
  background: var(--accent-control);
  border-color: var(--line);
  font-weight: 600;
}
.button:hover {
  filter: brightness(1.1);
}
.tag {
  display: inline-block;
  font-size: 0.8125rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 2px 8px;
}
.section {
  border-top: 1px solid var(--line);
  padding: 34px 0 40px;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 22px;
  margin-bottom: 22px;
}
.section-heading p {
  color: var(--muted);
  font-size: 0.9375rem;
}
.section-heading > a {
  color: var(--accent);
  white-space: nowrap;
  font-size: 0.875rem;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.card {
  display: block;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 7px;
  text-decoration: none;
  background: var(--ground);
}
a.card:hover {
  background: var(--hover);
  border-color: var(--line);
}
.card p {
  color: var(--muted);
  font-size: 0.9375rem;
}
.card .tag {
  margin-bottom: 14px;
}
.arrow {
  display: block;
  color: var(--muted);
  font-size: 0.8125rem;
  margin-top: 20px;
}
.note {
  font-size: 0.875rem;
  color: var(--muted);
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--ground);
  margin: 24px 0;
}
.crumb {
  color: var(--muted);
  font-size: 0.875rem;
  margin-bottom: 22px;
}
.crumb a {
  color: var(--accent);
  text-decoration: none;
}
.doc-layout {
  max-width: 820px;
}
.doc-layout h1 {
  font-size: 2.125rem;
}
.doc-layout .eyebrow {
  font-size: 0.8125rem;
  color: var(--muted);
}
.outline {
  padding: 30px 0;
  border-top: 1px solid var(--line);
}
.outline p,
.outline ol {
  color: var(--muted);
}
.outline ol {
  padding-left: 24px;
}
.outline li {
  padding: 8px 0 8px 6px;
}
.related {
  border-top: 1px solid var(--line);
  padding-top: 30px;
  margin-top: 15px;
}
.related a {
  display: inline-block;
  margin: 0 18px 10px 0;
  color: var(--accent);
  font-size: 0.9375rem;
}
.pager {
  display: flex;
  justify-content: space-between;
  gap: 25px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
  margin-top: 26px;
  font-size: 0.875rem;
}
.pager a {
  flex: 1;
  color: var(--muted);
}
.pager a:last-child {
  text-align: right;
}
.topic-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.topic-list li {
  border-bottom: 1px solid var(--line);
}
.topic-list a {
  display: block;
  padding: 19px 30px 19px 0;
  text-decoration: none;
  position: relative;
}
.topic-list a:hover {
  background: var(--hover);
}
.topic-list strong {
  display: block;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 550;
}
.topic-list span {
  display: block;
  color: var(--muted);
  margin-top: 5px;
  font-size: 0.9375rem;
}
.topic-list b {
  position: absolute;
  right: 8px;
  top: 20px;
  color: var(--subtle);
  font-weight: 400;
}
.map-group {
  margin-bottom: 25px;
}
.map-group h3 {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.map-group a {
  display: block;
  margin: 10px 0;
  font-size: 0.875rem;
  color: var(--muted);
}
footer {
  border-top: 1px solid var(--line);
  margin: 0 48px;
  padding: 26px 0 36px;
  font-size: 0.8755rem;
  color: var(--muted);
}
footer p {
  color: var(--ink);
}
footer span {
  margin-left: 18px;
  color: var(--subtle);
}
footer div {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin: 14px 0;
}
footer a {
  text-decoration: none;
}
footer small {
  font-size: 0.8125rem;
}
.mobile-only {
  display: none;
}
.icon-button {
  color: var(--ink);
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--ground);
  font-size: 0.875rem;
}
.menu-backdrop {
  position: fixed;
  inset: 0;
  background: var(--ground);
  border: 0;
  z-index: 25;
}
@media (max-width: 1450px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .workspace {
    padding: 0 36px;
    gap: 32px;
  }
  .review-bar {
    padding: 0 36px;
  }
}
@media (max-width: 1180px) {
  .has-toc .workspace {
    grid-template-columns: minmax(0, 1fr);
  }
  .page-toc {
    display: none;
  }
  :root {
    --sidebar: 224px;
  }
  .review-bar span {
    display: none;
  }
}
@media (max-width: 1000px) {
  .workspace {
    padding: 0 24px;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .review-bar {
    padding: 0 24px;
  }
}
@media (max-width: 680px) {
  :root {
    --sidebar: 280px;
  }
  .site-sidebar {
    visibility: hidden;
    transform: translateX(-100%);
  }
  .menu-open .site-sidebar {
    visibility: visible;
    transform: translateX(0);
  }
  .page-shell {
    margin-left: 0;
  }
  .mobile-only {
    display: inline-block;
  }
  .menu-open {
    overflow: hidden;
  }
  .review-bar {
    padding: 0 20px;
    height: 56px;
    gap: 18px;
  }
  .workspace {
    padding: 0 24px;
  }
  .wrap {
    padding-top: 34px;
  }
  .sidebar-head {
    padding-top: 20px;
  }
  .skip {
    left: 20px;
  }
  .section-heading {
    display: block;
  }
  footer {
    margin: 0 24px;
  }
  .doc-layout h1 {
    font-size: 1.85rem;
  }
}
@media (max-width: 540px) {
  .grid {
    grid-template-columns: 1fr;
  }
  .card {
    padding: 20px;
  }
  .review-bar {
    font-size: 0.75rem;
  }
  .pager {
    flex-direction: column;
  }
  .pager a:last-child {
    text-align: left;
  }
  footer span {
    display: block;
    margin-left: 0;
  }
}

.search-result p {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 8px 0 0;
  line-height: 1.7;
  overflow-wrap: anywhere;
}
.search-result mark {
  color: var(--ink);
  background: var(--selected);
  border-bottom: 1px solid var(--accent-control);
}
.search-result:focus-visible {
  outline-offset: -2px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

.language-switch {
  flex: 0 0 auto;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  white-space: nowrap;
}
.language-switch:hover {
  color: var(--accent);
}
html[lang="en"] .float-tool-launcher {
  flex-wrap: wrap;
}