:root {
  color-scheme: dark;
  --background: oklch(0.07 0.015 265);
  --foreground: oklch(0.92 0.008 80);
  --muted: oklch(0.14 0.012 265);
  --muted-foreground: oklch(0.55 0.015 80);
  --accent: oklch(0.68 0.10 65);
  --accent-foreground: oklch(0.07 0.015 265);
  --claude: oklch(0.68 0.06 230);
  --claude-bg: oklch(0.10 0.02 230);
  --substrate: oklch(0.45 0.01 80);
  --card: oklch(0.09 0.012 265);
  --card-foreground: oklch(0.92 0.008 80);
  --border: oklch(0.20 0.01 265);
  --border-subtle: oklch(0.14 0.008 265);
  --input: oklch(0.10 0.01 265);
  --ring: oklch(0.68 0.10 65);
  --popover: oklch(0.09 0.012 265);
  --popover-foreground: oklch(0.92 0.008 80);
  --primary: oklch(0.92 0.008 80);
  --primary-foreground: oklch(0.07 0.015 265);
  --secondary: oklch(0.14 0.012 265);
  --secondary-foreground: oklch(0.70 0.01 80);
  --destructive: oklch(0.50 0.12 25);
  --destructive-foreground: oklch(0.92 0.008 80);
  --success: oklch(0.65 0.08 150);
  --warning: oklch(0.70 0.10 82);
  --info: var(--claude);
  --radius: 0;
  --font-sans: "IBM Plex Serif", Georgia, "Times New Roman", serif;
  --font-serif: "IBM Plex Serif", Georgia, "Times New Roman", serif;
  --font-display: "Cormorant Garamond", "IBM Plex Serif", Georgia, serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --content-width: 74ch;
  --header-height: 3.75rem;
  --sidebar-width: 19rem;
  --toc-width: 15rem;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--background);
  scroll-padding-top: calc(var(--header-height) + 1.25rem);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    linear-gradient(180deg, oklch(0.09 0.018 265 / 0.80), transparent 24rem),
    radial-gradient(circle at 78% -10%, oklch(0.68 0.06 230 / 0.12), transparent 30rem),
    var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
}

::selection {
  background: oklch(0.68 0.10 65 / 0.28);
  color: oklch(0.97 0.008 80);
}

a {
  color: var(--accent);
  text-decoration-color: oklch(0.68 0.10 65 / 0.42);
  text-underline-offset: 0.18em;
  transition: color 160ms ease, border-color 160ms ease, text-decoration-color 160ms ease, background 160ms ease;
}

a:hover {
  color: oklch(0.78 0.11 65);
  text-decoration-color: currentColor;
}

img,
svg {
  max-width: 100%;
}

.skip-link {
  position: fixed;
  z-index: 200;
  top: 0.75rem;
  left: 0.75rem;
  transform: translateY(-180%);
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--accent);
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: var(--header-height);
  border-bottom: 1px solid var(--border);
  background: oklch(0.07 0.015 265 / 0.92);
  backdrop-filter: blur(14px);
}

.site-header__inner {
  display: grid;
  grid-template-columns: minmax(12rem, 1fr) minmax(10rem, 1fr);
  align-items: center;
  gap: 1.5rem;
  height: 100%;
  max-width: 92rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
  color: var(--foreground);
  text-decoration: none;
}

.brand__signal,
.status-strip__dot {
  width: 0.48rem;
  height: 0.48rem;
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 14px oklch(0.68 0.10 65 / 0.48);
}

.brand__name {
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.02em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header-repo {
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--muted-foreground);
  text-decoration: none;
}

.header-repo:hover {
  color: var(--accent);
}

.doc-kicker,
.version-panel__label,
.search-panel__label,
.toc-panel__title,
.site-footer__label,
.page-nav__label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.layout-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  max-width: 92rem;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.sidebar {
  position: sticky;
  top: calc(var(--header-height) + 1.5rem);
  align-self: start;
  max-height: calc(100vh - var(--header-height) - 3rem);
  padding-right: 1.5rem;
  overflow: auto;
}

.version-panel,
.search-panel {
  margin-bottom: 1.5rem;
  padding: 0.85rem;
  border: 1px solid var(--border);
  background: oklch(0.09 0.012 265 / 0.82);
}

.version-panel {
  border-left: 2px solid var(--accent);
}

.version-panel__label,
.search-panel__label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--muted-foreground);
}

.version-panel__select,
.search-panel__input {
  width: 100%;
  min-height: 2.55rem;
  border: 1px solid var(--border);
  border-radius: 0;
  background: var(--input);
  color: var(--foreground);
  font: 0.92rem/1.4 var(--font-mono);
  padding: 0.5rem 0.68rem;
  outline: none;
}

.version-panel__select {
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--accent) 50%),
    linear-gradient(135deg, var(--accent) 50%, transparent 50%);
  background-position:
    calc(100% - 1rem) 50%,
    calc(100% - 0.7rem) 50%;
  background-size: 0.32rem 0.32rem, 0.32rem 0.32rem;
  background-repeat: no-repeat;
  color: var(--accent);
}

.version-panel__select:focus,
.search-panel__input:focus {
  border-color: var(--ring);
  box-shadow: 0 0 0 2px oklch(0.68 0.10 65 / 0.16);
}

.search-panel__results {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.75rem;
}

.search-result {
  display: block;
  padding: 0.65rem 0;
  border-top: 1px solid var(--border-subtle);
  color: var(--foreground);
  text-decoration: none;
}

.search-result strong {
  display: block;
  margin-bottom: 0.18rem;
  font-size: 0.9rem;
  line-height: 1.35;
}

.search-result span,
.search-empty {
  color: var(--muted-foreground);
  font-size: 0.78rem;
  line-height: 1.45;
}

.side-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.side-nav__list--level-2,
.side-nav__list--level-3,
.side-nav__list--level-4 {
  margin-left: 0.7rem;
  padding-left: 0.7rem;
  border-left: 1px solid var(--border-subtle);
}

.side-nav__item {
  margin: 0.12rem 0;
}

.side-nav__link,
.side-nav__section {
  display: block;
  padding: 0.38rem 0.55rem;
  border-left: 2px solid transparent;
  color: var(--muted-foreground);
  font-size: 0.93rem;
  line-height: 1.35;
  text-decoration: none;
}

.side-nav__section {
  margin-top: 0.9rem;
  color: var(--foreground);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.10em;
  text-transform: uppercase;
}

.side-nav__link:hover {
  border-left-color: oklch(0.68 0.10 65 / 0.45);
  background: oklch(0.14 0.012 265 / 0.55);
  color: var(--foreground);
}

.side-nav__link--current {
  border-left-color: var(--accent);
  background: oklch(0.68 0.10 65 / 0.08);
  color: var(--accent);
}

.content-wrap {
  min-width: 0;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, var(--content-width)) var(--toc-width);
  gap: 3.5rem;
  justify-content: center;
}

.doc-content {
  min-width: 0;
}

.doc-kicker {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 0 0 2rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border);
  background: oklch(0.14 0.012 265 / 0.35);
  color: oklch(0.62 0.015 80 / 0.72);
}

.doc-content h1,
.doc-content h2,
.doc-content h3,
.doc-content h4,
.doc-content h5,
.doc-content h6 {
  color: var(--foreground);
  font-weight: 500;
  line-height: 1.12;
  text-wrap: balance;
}

.doc-content .headerlink {
  opacity: 0;
  margin-left: 0.35em;
  color: var(--muted-foreground);
  font-size: 0.55em;
  vertical-align: 0.15em;
  text-decoration: none;
  transition: opacity 160ms ease;
}

.doc-content h1:hover .headerlink,
.doc-content h2:hover .headerlink,
.doc-content h3:hover .headerlink,
.doc-content h4:hover .headerlink,
.doc-content h5:hover .headerlink,
.doc-content h6:hover .headerlink {
  opacity: 0.5;
}

.doc-content .headerlink:hover {
  opacity: 1;
  color: var(--accent);
}

.doc-content h1 {
  margin: 0 0 1.35rem;
  font-family: var(--font-display);
  font-size: clamp(2.65rem, 7vw, 5rem);
  font-weight: 400;
  letter-spacing: 0;
}

.doc-content h2 {
  margin: 3.5rem 0 1rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}

.doc-content h3 {
  margin: 2.2rem 0 0.7rem;
  font-size: 1.35rem;
}

.doc-content h4 {
  margin: 1.8rem 0 0.55rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  letter-spacing: 0.04em;
}

.doc-content p,
.doc-content ul,
.doc-content ol,
.doc-content dl,
.doc-content blockquote,
.doc-content table,
.doc-content pre,
.doc-content .admonition {
  margin-top: 0;
  margin-bottom: 1.35rem;
}

.doc-content p {
  max-width: var(--content-width);
}

.doc-content strong {
  color: oklch(0.97 0.008 80);
  font-weight: 600;
}

.doc-content em {
  color: oklch(0.82 0.012 80);
}

.doc-content ul,
.doc-content ol {
  padding-left: 1.45rem;
}

.doc-content li {
  margin-bottom: 0.45rem;
  color: oklch(0.82 0.012 80);
}

.doc-content li::marker {
  color: var(--accent);
}

.doc-content hr {
  margin: 3rem 0;
  border: 0;
  border-top: 1px solid var(--border);
}

.doc-content blockquote {
  padding: 0.1rem 0 0.1rem 1.25rem;
  border-left: 2px solid var(--claude);
  color: oklch(0.74 0.018 80);
  font-style: italic;
}

.doc-content code,
.doc-content kbd {
  font-family: var(--font-mono);
}

.doc-content :not(pre) > code,
.doc-content kbd {
  padding: 0.14rem 0.34rem;
  border: 1px solid var(--border-subtle);
  background: oklch(0.10 0.02 230 / 0.72);
  color: var(--accent);
  font-size: 0.86em;
}

.doc-content pre,
.doc-content .highlight {
  overflow-x: auto;
  border: 1px solid var(--border);
  background: oklch(0.06 0.017 265);
}

.doc-content pre {
  padding: 1rem 1.1rem;
}

.doc-content .highlight pre {
  margin: 0;
  border: 0;
}

.doc-content pre code,
.doc-content .highlight code {
  color: oklch(0.88 0.012 80);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.65;
}

.highlight .hll { background-color: oklch(0.68 0.10 65 / 0.13); }
.highlight .c,
.highlight .cm,
.highlight .c1 { color: oklch(0.55 0.012 80); font-style: italic; }
.highlight .k,
.highlight .kd,
.highlight .kn { color: var(--claude); }
.highlight .s,
.highlight .s1,
.highlight .s2 { color: oklch(0.76 0.08 82); }
.highlight .m,
.highlight .mi,
.highlight .mf { color: oklch(0.72 0.08 150); }
.highlight .na,
.highlight .nb,
.highlight .nc,
.highlight .nf { color: var(--accent); }
.highlight .o,
.highlight .p { color: oklch(0.70 0.015 80); }

.doc-content table {
  display: block;
  width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  border: 1px solid var(--border);
  font-size: 0.94rem;
}

.doc-content th,
.doc-content td {
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
  vertical-align: top;
}

.doc-content th {
  background: oklch(0.14 0.012 265 / 0.75);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.doc-content tr:nth-child(even) td {
  background: oklch(0.09 0.012 265 / 0.55);
}

.admonition {
  padding: 0.95rem 1.05rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  background: oklch(0.09 0.012 265 / 0.78);
}

.admonition-title {
  margin: 0 0 0.45rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.10em;
  text-transform: uppercase;
}

.admonition.note,
.admonition.info {
  border-left-color: var(--info);
}

.admonition.note .admonition-title,
.admonition.info .admonition-title {
  color: var(--info);
}

.admonition.warning,
.admonition.caution {
  border-left-color: var(--warning);
}

.admonition.warning .admonition-title,
.admonition.caution .admonition-title {
  color: var(--warning);
}

.admonition.danger,
.admonition.error {
  border-left-color: var(--destructive);
}

.admonition.danger .admonition-title,
.admonition.error .admonition-title {
  color: oklch(0.68 0.12 25);
}

.toc-panel {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
  align-self: start;
  max-height: calc(100vh - var(--header-height) - 4rem);
  overflow: auto;
}

.toc-panel__title {
  margin-bottom: 0.75rem;
  color: var(--muted-foreground);
}

.toc-panel__list,
.toc-panel__list ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-panel__list ul {
  margin: 0.25rem 0 0.45rem 0.7rem;
  padding-left: 0.75rem;
  border-left: 1px solid var(--border-subtle);
}

.toc-panel a {
  display: block;
  padding: 0.22rem 0;
  color: oklch(0.62 0.015 80 / 0.78);
  font-size: 0.82rem;
  line-height: 1.35;
  text-decoration: none;
}

.toc-panel a:hover {
  color: var(--accent);
}

.page-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.page-nav > div:last-child {
  text-align: right;
}

.page-nav__label {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--muted-foreground);
}

.page-nav a {
  color: var(--foreground);
  text-decoration: none;
}

.page-nav a:hover {
  color: var(--accent);
}

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.4rem;
  max-width: 92rem;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.site-footer__label,
.site-footer__value {
  display: block;
}

.site-footer__label {
  margin-bottom: 0.28rem;
  color: oklch(0.62 0.015 80 / 0.65);
}

.site-footer__value {
  color: var(--foreground);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-decoration: none;
}

@media (max-width: 1180px) {
  .content-grid {
    grid-template-columns: minmax(0, var(--content-width));
  }

  .toc-panel {
    display: none;
  }
}

@media (max-width: 900px) {
  body {
    font-size: 17px;
  }

  .site-header {
    position: relative;
    height: auto;
  }

  .site-header__inner {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 0.8rem;
    padding: 0.9rem 1rem;
  }

  .layout-shell {
    display: block;
    padding: 1rem 1rem 3rem;
  }

  .sidebar {
    position: relative;
    top: auto;
    max-height: none;
    margin-bottom: 2rem;
    padding-right: 0;
  }

  .side-nav {
    padding: 0.75rem;
    border: 1px solid var(--border);
    background: oklch(0.09 0.012 265 / 0.72);
  }

  .doc-kicker {
    flex-direction: column;
    gap: 0.35rem;
  }

  .site-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  body {
    font-size: 16px;
  }

  .doc-content h1 {
    font-size: 2.45rem;
  }

  .page-nav,
  .site-footer__grid {
    grid-template-columns: 1fr;
  }

  .page-nav > div:last-child {
    text-align: left;
  }
}

@media print {
  body {
    background: white;
    color: black;
    font-size: 12pt;
  }

  .site-header,
  .sidebar,
  .toc-panel,
  .site-footer,
  .page-nav,
  .doc-kicker {
    display: none;
  }

  .layout-shell,
  .content-grid {
    display: block;
    max-width: none;
    padding: 0;
  }

  .doc-content a {
    color: black;
  }
}