:root {
  --bg: #ffffff;
  --bg-secondary: #f5f5f5;
  --fg: rgba(0, 0, 0, 0.87);
  --fg-muted: rgba(0, 0, 0, 0.54);
  --border: #e0e0e0;
  --hover-bg: rgba(0, 0, 0, 0.04);
  --code-bg: #f5f5f5;
  --accent: #119eda;
  --accent-soft: rgba(17, 158, 218, 0.08);
  --sidebar-w: 264px;
  --topbar-h: 64px;

  --app-max-w: 1364px;
}
.dark-theme {
  --bg: #1e2129;
  --bg-secondary: #262933;
  --fg: rgba(255, 255, 255, 0.87);
  --fg-muted: rgba(255, 255, 255, 0.7);
  --border: #3c4252;
  --hover-bg: rgba(255, 255, 255, 0.05);
  --code-bg: #262933;
  --accent-soft: rgba(17, 158, 218, 0.14);
}

:root { color-scheme: light; }
:root:has(body.dark-theme) { color-scheme: dark; }
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--fg);
  font: 16px/1.5 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}
a { color: var(--accent); text-decoration: none; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  overflow: hidden; clip-path: inset(50%); white-space: nowrap;
}

.skip-link {
  position: absolute; top: 0; left: -9999px; z-index: 100;
  padding: .6rem 1rem;
  background: var(--bg); color: var(--accent);
  border: 1px solid var(--border); border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

.main:focus, .sidebar:focus { outline: none; }

html { scroll-behavior: smooth; }
:root { interpolate-size: allow-keywords; }
@view-transition { navigation: auto; }
.sidebar { view-transition-name: sidebar; }

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

.layout {
  display: flex;
  min-height: calc(100vh - var(--topbar-h));
  padding-inline: max(0px, calc((100% - var(--app-max-w)) / 2));
}

.topbar {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: stretch;
  height: var(--topbar-h);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding-inline: max(0px, calc((100% - var(--app-max-w)) / 2));
}
.topbar-brand {
  flex: 0 0 var(--sidebar-w);
  display: flex; align-items: center;
  padding: 0 1.25rem;
  gap: .75rem;
}

.topbar-brand-actions { display: flex; align-items: center; gap: .5rem; }
.topbar-main {
  flex: 1 1 auto; min-width: 0;
  display: flex; align-items: center;
}

.topbar-main-inner {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 820px) 220px;
  justify-content: center;
  gap: 2.5rem;
}

.topbar-actions {
  display: flex; align-items: center; justify-content: flex-end;
  gap: .4rem; min-width: 0;
  padding-right: 3rem;
}

.sidebar {
  width: var(--sidebar-w); flex: 0 0 var(--sidebar-w);
  background: var(--bg);
  padding: 0;
  overflow-y: auto;

  scrollbar-gutter: stable;
  overscroll-behavior: contain;
  height: calc(100vh - var(--topbar-h));
  position: sticky; top: var(--topbar-h);
  font-size: 14px;
}
.brand { display: flex; align-items: center; }
.brand picture { display: flex; }

.sidebar-logo { height: 28px; width: auto; max-width: 100%; }
.dark-theme .sidebar-logo { filter: brightness(0) invert(1); }

.theme-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; flex: 0 0 32px;
  background: var(--bg-secondary); color: var(--fg-muted);
  border: 1px solid var(--border); border-radius: 6px;
  cursor: pointer; line-height: 1; padding: 0;
  transition: background-color .12s, color .12s;
}
.theme-toggle:hover { background: var(--hover-bg); color: var(--fg); }
.theme-toggle .icon-sun,
.theme-toggle .icon-moon { width: 18px; height: 18px; display: block; }
.theme-toggle .icon-sun { display: none; }
body.dark-theme .theme-toggle .icon-sun { display: block; }
body.dark-theme .theme-toggle .icon-moon { display: none; }

.lang-switcher { position: relative; }
.lang-switcher > summary {
  display: inline-flex; align-items: center; gap: .3rem;
  height: 32px; padding: 0 .6rem;
  background: var(--bg-secondary); color: var(--fg-muted);
  border: 1px solid var(--border); border-radius: 6px;
  font-size: .82rem; font-weight: 500; line-height: 1;
  cursor: pointer; user-select: none;
  list-style: none;
  transition: background-color .12s, color .12s;
}
.lang-switcher > summary::-webkit-details-marker { display: none; }
.lang-switcher > summary::marker { content: ""; }
.lang-switcher > summary:hover { background: var(--hover-bg); color: var(--fg); }
.lang-switcher .lang-caret { transition: transform .15s; }
.lang-switcher[open] > summary .lang-caret { transform: rotate(180deg); }
.lang-menu {
  position: absolute; top: calc(100% + 4px); right: 0;
  min-width: 100%;
  background: var(--bg); color: var(--fg);
  border: 1px solid var(--border); border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  padding: .25rem;
  z-index: 100;
}
.lang-menu a {
  display: block; padding: .4rem .75rem;
  color: var(--fg); text-decoration: none;
  font-size: .85rem; line-height: 1.2;
  border-radius: 4px;
  transition: background-color .12s;
}
.lang-menu a:hover { background: var(--hover-bg); }
.lang-menu a.active { font-weight: 600; color: var(--accent); }

.search { position: relative; width: 100%; }
.search-input {
  width: 100%; padding: .45rem .7rem;
  background: var(--bg-secondary); color: var(--fg);
  border: 1px solid var(--border); border-radius: 8px;
  font: inherit; font-size: .85rem;
  outline: none; transition: border-color .12s;
}
.search-input::placeholder { color: var(--fg-muted); }
.search-input:focus { border-color: var(--accent); }
.search-results {
  position: absolute; left: 0; right: 0; top: calc(100% + .35rem);
  background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  max-height: 70vh; overflow-y: auto;
  z-index: 50;
}
.search-result {
  display: block; padding: .55rem .8rem;
  color: var(--fg); text-decoration: none;
  cursor: pointer; border-bottom: 1px solid var(--border);
}
.search-result:last-child { border-bottom: none; }
.search-result:hover, .search-result:focus { background: var(--hover-bg); outline: none; }
.search-result-path {
  font-size: .72rem; color: var(--fg-muted); margin-bottom: .1rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.search-result-title { font-weight: 500; font-size: .88rem; }
.search-result-excerpt {
  font-size: .8rem; color: var(--fg-muted); line-height: 1.4;
  margin-top: .15rem;
  overflow: hidden; display: -webkit-box;
  -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.search-result-excerpt mark {
  background: var(--accent-soft); color: var(--accent);
  padding: 0 .15em; border-radius: 3px;
}
.search-empty {
  padding: .55rem .8rem;
  color: var(--fg-muted); font-style: italic; font-size: .85rem;
}

.nav, .nav ul { list-style: none; margin: 0; padding: 0; }
.nav { padding: 0 .75rem 1.5rem; }
.nav li { margin: 0; }

.nav a {
  display: block;
  padding: 5px 10px;
  border-radius: 6px;
  color: var(--fg-muted);
  font-size: 13px;
  line-height: 1.55;
  transition: background-color .12s, color .12s;
}
.nav a:hover { background: var(--hover-bg); color: var(--fg); }
.nav a.active {
  color: var(--accent);
  font-weight: 600;
  background: transparent;
}

.nav a:has(.nav-external) { display: inline-flex; align-items: center; gap: .3rem; }
.nav-external {
  width: 12px; height: 12px;
  color: var(--fg-muted);
  flex: 0 0 auto;
  margin-left: auto;
}
.nav a:hover .nav-external { color: currentColor; }

.nav ul { padding-left: .15rem; }
.nav > ul { margin-left: 0; }
.nav ul ul { margin-left: .75rem; border-left: 1px solid var(--border); }

.nav details > summary {
  list-style: none;
  display: flex; align-items: center; gap: 2px;
  cursor: pointer;
}
.nav details > summary::-webkit-details-marker { display: none; }
.nav details > summary > a { flex: 1 1 auto; }
.nav-toggle {
  flex: 0 0 auto;
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 6px;
  transition: background-color .12s;
}
.nav-toggle:hover { background: var(--hover-bg); }
.nav-toggle::after {
  content: "";
  width: 7px; height: 7px;
  border-right: 1.5px solid var(--fg-muted);
  border-bottom: 1.5px solid var(--fg-muted);
  transform: rotate(-45deg);
  transition: transform .15s ease;
}
.nav-toggle:hover::after { border-color: var(--fg); }
.nav details[open] > summary > .nav-toggle::after { transform: rotate(45deg); }

.nav details::details-content {
  height: 0; overflow: clip;
  transition: height .22s ease, content-visibility .22s allow-discrete;
}
.nav details[open]::details-content { height: auto; }

.main { flex: 1 1 auto; min-width: 0; }
.main-inner {
  display: grid;
  grid-template-columns: minmax(0, 820px) 220px;
  justify-content: center;
  gap: 2.5rem;
}
.content {
  min-width: 0;
  padding: 2.5rem 3rem 5rem;
  overflow-wrap: break-word;
}

.content h1, .content h2, .content h3,
.content h4, .content h5, .content h6 { font-weight: 500; }
.content h1 {
  font-size: 2.14em; margin-top: 0; margin-bottom: .8em;
  line-height: 1.2; scroll-margin-top: 1.5rem;
}
.content h2 {
  font-size: 1.43em; margin-top: 1.6em; margin-bottom: .8em;
  line-height: 1.4;
  border-bottom: 1px solid var(--border);
  padding-bottom: .3rem; scroll-margin-top: 1.5rem;
}
.content h3 {
  font-size: 1.29em; margin-top: 1.56em; margin-bottom: .44em;
  line-height: 1.55; scroll-margin-top: 1.5rem;
}
.content p { margin-top: 1.14em; margin-bottom: 1.14em; }

.anchor {
  opacity: 0; margin-left: .4rem;
  color: var(--fg-muted); text-decoration: none;
  font-weight: 400; transition: opacity .12s;
}
.content h1:hover .anchor,
.content h2:hover .anchor,
.content h3:hover .anchor { opacity: 1; }
.anchor:hover { color: var(--accent); }
.content a { text-decoration: underline; }
.content img { max-width: 100%; height: auto; border-radius: 10px; cursor: zoom-in; }
.content img[data-size="line"] {
  height: 1.25em; width: auto; vertical-align: -.2em; border-radius: 0;
}
.content mark { background: none; color: inherit; }

.content figure {
  display: table;
  margin: 1.25rem auto;
  max-width: 100%;
}
.content figure img { display: block; }
.content figure figcaption {
  caption-side: bottom; display: table-caption;
  text-align: center; color: var(--fg-muted); font-size: .9rem;
  padding-top: .4rem;
}

.content .table-wrap {
  margin: 1rem 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.content table {
  border-collapse: collapse;
  width: 100%;
  margin: 0;
}
.content thead { background: var(--bg-secondary); }
.content th, .content td {
  padding: .5rem .75rem;
  text-align: left;
  border: 0;
}
.content th { font-weight: 600; }
.content tbody tr { border-top: 1px solid var(--border); }
.content tbody tr:first-child { border-top: 0; }

.content blockquote {
  margin: 1rem 0; padding: .4rem 0 .4rem 1.25rem;
  border-left: 2px solid var(--border);
  color: var(--fg-muted);
}
.content blockquote p { margin: .35rem 0; }

.content :not(pre) > code {
  background: var(--code-bg); padding: .1rem .35rem;
  border: 1px solid var(--border); border-radius: 4px;
  font-size: .88em;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.content pre {
  background: var(--bg-secondary); padding: 1rem;
  border-radius: 10px; overflow-x: auto;
  border: 1px solid var(--border);
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.content pre code { background: none; padding: 0; font-size: .85rem; border: 0; }

.file-card-wrap { margin: 1.25rem 0; }
.file-card {
  display: flex; align-items: center; gap: 1rem;
  padding: .85rem 1.1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border); border-radius: 10px;
  color: var(--fg); text-decoration: none;
  transition: border-color .12s, background .12s, transform .12s;
}
.file-card:hover {
  border-color: var(--accent); background: var(--accent-soft);
  text-decoration: none;
}
.file-card__icon {
  flex: 0 0 auto;
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft); color: var(--accent);
  border-radius: 8px;
}
.file-card__icon svg { width: 22px; height: 22px; }
.file-card__body {
  flex: 1 1 auto; min-width: 0;
  display: flex; flex-direction: column; gap: .15rem;
}
.file-card__name {
  font-weight: 500; color: var(--fg);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.file-card__meta {
  font-size: .8rem; color: var(--fg-muted);
}
.file-card__ext {
  font-weight: 500; letter-spacing: .03em;
}
.file-card__action {
  flex: 0 0 auto;
  font-size: .85rem; font-weight: 500; color: var(--accent);
  white-space: nowrap;
}

.content a.file-card { text-decoration: none; }

.footnote-ref {
  font-size: 0.75em;
  line-height: 0;
  vertical-align: super;
  margin-left: 1px;
}
.footnote-ref a {
  text-decoration: none;
  padding: 0 1px;
}
.footnotes {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}
.footnotes-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--fg-muted);
  margin: 0 0 0.75rem;
}
.footnotes-list {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--fg-muted);
}
.footnote-item { margin: 0.4rem 0; }
.footnote-item > :first-child { margin-top: 0; }
.footnote-item > :last-child { margin-bottom: 0; }
.footnote-item:target {
  background: var(--accent-soft);
  border-radius: 6px;
  padding: 0.35rem 0.5rem;
  margin-left: -0.5rem;
}
.footnote-back {
  margin-left: 0.35rem;
  text-decoration: none;
  font-size: 0.85em;
}

.hint {
  margin: 1.25rem 0;
  display: grid; grid-template-columns: auto 1fr;
  gap: .85rem; align-items: start;
  padding: .9rem 1.1rem;
  border: 1px solid var(--border);
  border-left-width: 4px;
  border-radius: 8px;
}
.hint-icon {
  display: flex; align-items: center; justify-content: center;
  width: 22px; height: 22px;
  margin-top: .15rem;
}
.hint-icon svg { width: 22px; height: 22px; }
.hint-body > :first-child { margin-top: 0; }
.hint-body > :last-child  { margin-bottom: 0; }
.hint-info {
  background: rgba(17, 158, 218, 0.08);
  border-color: var(--accent);
  color: var(--fg);
}
.hint-info .hint-icon { color: var(--accent); }
.hint-warning {
  background: rgba(245, 158, 11, 0.10);
  border-color: #f59e0b;
  color: var(--fg);
}
.hint-warning .hint-icon { color: #f59e0b; }
.hint-danger {
  background: rgba(239, 68, 68, 0.10);
  border-color: #ef4444;
  color: var(--fg);
}
.hint-danger .hint-icon { color: #ef4444; }
.hint-success {
  background: rgba(34, 197, 94, 0.10);
  border-color: #22c55e;
  color: var(--fg);
}
.hint-success .hint-icon { color: #22c55e; }

.content details {
  margin: 1.25rem 0;
  padding: .25rem 1.1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color .12s, background .12s;
}
.content details[open] { background: var(--bg); }
.content details > summary {
  list-style: none;
  cursor: pointer;
  padding: .65rem 0;
  display: flex; align-items: center; gap: .6rem;
  font-weight: 500;
  color: var(--fg);
  user-select: none;
}
.content details > summary::-webkit-details-marker { display: none; }
.content details > summary::after {
  content: "";
  flex: 0 0 auto;
  margin-left: auto;
  width: 10px; height: 10px;
  border-right: 2px solid var(--fg-muted);
  border-bottom: 2px solid var(--fg-muted);
  transform: rotate(-45deg);
  transition: transform .15s ease;
}
.content details[open] > summary::after { transform: rotate(45deg); }
.content details > summary:hover { color: var(--accent); }
.content details > summary:hover::after {
  border-right-color: var(--accent);
  border-bottom-color: var(--accent);
}

.content details[open] > summary { border-bottom: 1px solid var(--border); }
.content details > summary + * { margin-top: .85rem; }
.content details > :last-child { margin-bottom: .65rem; }

.link-card {
  display: flex; align-items: center; gap: .9rem;
  margin: 1rem 0; padding: .75rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border); border-radius: 10px;
  color: var(--fg); text-decoration: none;
  transition: border-color .12s, background .12s;
}
.link-card:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  text-decoration: none;
}

.link-card__icon {
  flex: 0 0 auto;
  width: 20px; height: 20px; border-radius: 4px;
  color: var(--fg-muted);
}
.link-card__body {
  flex: 1 1 auto; min-width: 0;
  display: flex; flex-direction: column; gap: .1rem;
}
.link-card__brand {
  flex: 0 0 32px; width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
}
.content .link-card__brand img {
  width: 32px; height: 32px; margin: 0; border: 0;
  border-radius: 4px; object-fit: contain; cursor: inherit;
}
.link-card__brand .link-card__icon { display: none; }
.link-card__title {
  font-weight: 500; color: var(--fg);
  overflow-wrap: anywhere;
}
.link-card:hover .link-card__title { color: var(--accent); }
.link-card__host {
  font-size: .82rem; color: var(--fg-muted);
}
.link-card__arrow {
  flex: 0 0 auto;
  width: 14px; height: 14px;
  color: var(--fg-muted);
  transition: transform .12s, color .12s;
}

.content td .link-card, .content th .link-card { margin: .5rem 0; min-width: 0; }
.content td .link-card__title, .content th .link-card__title {
  white-space: normal; overflow: visible; word-break: break-word;
}
.link-card:hover .link-card__arrow {
  color: var(--accent);
  transform: translateX(2px);
}

.content a.link-card { text-decoration: none; }
.content figure.video { margin: 1rem 0; }
.content figure.video video {
  display: block; width: 100%; aspect-ratio: 16 / 9;
  background: #000; border-radius: 10px;
}
.section-cards {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem; margin: 1rem 0;
}
.section-cards .link-card { margin: 0; }
.page-description {
  margin-top: -.3em; color: var(--fg-muted); font-size: 1.07em;
}

.code-block { position: relative; }
.code-block pre { margin: 1rem 0; }
.copy-btn {
  position: absolute; top: .5rem; right: .5rem;
  background: var(--code-bg); color: var(--fg-muted);
  border: 1px solid var(--border); border-radius: 6px;
  padding: .2rem .6rem; font-size: .75rem; cursor: pointer;
  opacity: 0; transition: opacity .12s;
}

.code-block:hover .copy-btn,
.code-block:focus-within .copy-btn,
.copy-btn:focus-visible { opacity: 1; }
.copy-btn:hover { background: var(--hover-bg); color: var(--fg); }
.copy-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (hover: none) { .copy-btn { opacity: .9; } }

.breadcrumb {
  font-size: .82rem; color: var(--fg-muted);
  margin-bottom: 1.25rem; display: flex; flex-wrap: wrap; gap: .35rem;
}
.breadcrumb a { color: var(--fg-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.crumb-sep { color: var(--border); }
.crumb-current { color: var(--fg); }

.toc {
  position: sticky; top: 0; align-self: start;
  max-height: 100vh; overflow-y: auto;
  padding: 2.5rem .5rem 2rem 0;
  font-size: .85rem;
}
.toc-title {
  font-size: .72rem; text-transform: uppercase; letter-spacing: .04em;
  color: var(--fg-muted); font-weight: 500; margin-bottom: .6rem;
}
.toc ul { list-style: none; margin: 0; padding: 0; }
.toc li { margin: 0; }
.toc li a {
  display: block; padding: .25rem 0 .25rem .6rem;
  color: var(--fg-muted); text-decoration: none;
  border-left: 2px solid var(--border); line-height: 1.4;
}
.toc li a:hover { color: var(--accent); border-left-color: var(--accent); }
.toc li a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 500;
}
.toc .toc-sub a { padding-left: 1.5rem; }

.doc-footer { margin-top: 3rem; }
.page-nav {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
  border-top: 1px solid var(--border); padding-top: 1.5rem;
}
.page-nav-link {
  display: flex; flex-direction: column; gap: .25rem;
  padding: .9rem 1rem; border: 1px solid var(--border);
  border-radius: 10px; text-decoration: none; color: var(--fg);
}
.page-nav-link:hover { border-color: var(--accent); background: var(--accent-soft); }
.page-nav-link.next { text-align: right; }

.content a.page-nav-link { text-decoration: none; }
.page-nav-dir { font-size: .75rem; color: var(--fg-muted); }
.page-nav-title { font-size: .95rem; font-weight: 500; color: var(--accent); }
.updated-at {
  display: block; margin-top: 1.5rem;
  font-size: .8rem; color: var(--fg-muted);
}

.menu-toggle {
  display: none;
  padding: .35rem .6rem;
  background: var(--bg-secondary); color: var(--fg);
  border: 1px solid var(--border); border-radius: 8px;
  cursor: pointer; font-size: 1rem; line-height: 1;
}
.scrim { display: none; }


.lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0, 0, 0, .92);
  display: flex; align-items: center; justify-content: center;
  cursor: zoom-out;
  padding: 1rem;
}
.lightbox img {
  max-width: 100%; max-height: 100%;
  display: block; object-fit: contain;
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--fg-muted); }

@media (max-width: 1100px) {
  .main-inner { grid-template-columns: minmax(0, 820px); }
  .toc { display: none; }

  .topbar-main-inner {
    display: flex; align-items: center; gap: 1rem;
    max-width: 820px; margin: 0 auto;
    padding: 0 3rem;
  }
  .topbar-actions {
    margin-left: auto;
    padding-right: 0;
  }
  .search { width: 260px; max-width: 100%; }
}

@media (max-width: 800px) {
  .menu-toggle { display: inline-block; }
  .topbar-brand {
    flex: 0 0 auto;
    padding: 0 .9rem;
  }
  .sidebar-logo { width: 28px; }
  .dark-theme .sidebar-logo { filter: none; }
  .sidebar {
    position: fixed; top: var(--topbar-h); left: 0; bottom: 0; z-index: 30;
    height: calc(100vh - var(--topbar-h));

    border-right: 1px solid var(--border);

    visibility: hidden;
    transform: translateX(-100%);
    transition: transform .2s ease, visibility .2s;
  }
  body.nav-open .sidebar { visibility: visible; transform: translateX(0); }
  body.nav-open .scrim {
    display: block; position: fixed;
    top: var(--topbar-h); left: 0; right: 0; bottom: 0; z-index: 20;
    background: rgba(0, 0, 0, 0.4);
  }
  .content { padding: 1.5rem 1.25rem 4rem; }

  .content > figure,
  .content > p > img:only-child {
    margin-left: -1.25rem;
    margin-right: -1.25rem;
    max-width: calc(100% + 2.5rem);
    border-radius: 0;
  }
  .content > figure > img { border-radius: 0; width: 100%; }
  .content > figure > figcaption { padding-inline: 1.25rem; }
  .page-nav, .section-cards { grid-template-columns: 1fr; }
  .topbar-main { padding: 0 .9rem 0 0; }

  .topbar-main-inner { padding: 0; gap: .5rem; }
  .topbar-actions { flex-shrink: 0; }
  .search { width: 100%; min-width: 0; max-width: 200px; }
}

@media (max-width: 640px) {
  .lang-switcher .lang-caret { display: none; }
  .lang-switcher > summary { padding: 0 .5rem; }
}

.hljs-comment, .hljs-quote { color: var(--fg-muted); font-style: italic; }
.hljs-keyword, .hljs-selector-tag, .hljs-built_in { color: #cf222e; }
.hljs-string, .hljs-attr { color: #0a3069; }
.hljs-number, .hljs-literal { color: #0550ae; }
.hljs-title, .hljs-name, .hljs-section { color: #8250df; }
.dark-theme .hljs-keyword, .dark-theme .hljs-selector-tag, .dark-theme .hljs-built_in { color: #ff7b72; }
.dark-theme .hljs-string, .dark-theme .hljs-attr { color: #a5d6ff; }
.dark-theme .hljs-number, .dark-theme .hljs-literal { color: #79c0ff; }
.dark-theme .hljs-title, .dark-theme .hljs-name, .dark-theme .hljs-section { color: #d2a8ff; }

.dl-btn { position: absolute; top: 0; left: 0; z-index: 40; display: none;
  width: 20px; height: 20px; padding: 0; border: 0; border-radius: 4px; cursor: pointer;
  background: transparent; color: var(--fg-muted); line-height: 0; }
.dl-btn.on { display: block; }
.dl-btn svg { width: 15px; height: 15px; }
.dl-btn:hover, .dl-btn:focus-visible { background: var(--hover-bg); color: var(--accent); }
.dl-menu { position: absolute; z-index: 41; min-width: 8rem; padding: .25rem;
  display: flex; flex-direction: column; gap: 1px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,.18); }
.dl-menu__head { padding: .25rem .5rem; font-size: .75rem; color: var(--fg-muted); }
.dl-menu a { padding: .35rem .5rem; border-radius: 5px; font-size: .8125rem;
  font-weight: 600; color: var(--fg); text-decoration: none; }
.dl-menu a:hover, .dl-menu a:focus-visible { background: var(--hover-bg); color: var(--accent); }
.dl-btn--inline { position: static; display: inline-block; vertical-align: middle;
  margin-right: .25rem; }