:root,
:root[data-theme="white"] {
  color-scheme: light;
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-strong: #ffffff;
  --ink: #050505;
  --muted: #5f5f5f;
  --line: #d8d8d8;
  --line-strong: #8a8a8a;
  --accent: #050505;
  --accent-strong: #000000;
  --state-muted-bg: #f4f4f4;
  --state-strong-bg: #e9e9e9;
  --code-bg: #0a0a0a;
  --code-ink: #f6f6f6;
  --header-bg: rgba(255, 255, 255, 0.94);
  --inline-code-bg: #f4f4f4;
  --inline-code-border: #d7d7d7;
  --inline-code-ink: #111111;
  --table-head: #efefef;
  --copy-border: #6b6b6b;
  --copy-ink: #f6f6f6;
  --lead: #383838;
  --shadow: 0 18px 42px rgba(0, 0, 0, 0.08);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

:root[data-theme="black"] {
  color-scheme: dark;
  --bg: #000000;
  --surface: #080808;
  --surface-strong: #111111;
  --ink: #f7f7f7;
  --muted: #a8a8a8;
  --line: #2f2f2f;
  --line-strong: #777777;
  --accent: #ffffff;
  --accent-strong: #ffffff;
  --state-muted-bg: #151515;
  --state-strong-bg: #222222;
  --code-bg: #0d0d0d;
  --code-ink: #f7f7f7;
  --header-bg: rgba(0, 0, 0, 0.92);
  --inline-code-bg: #151515;
  --inline-code-border: #333333;
  --inline-code-ink: #f7f7f7;
  --table-head: #121212;
  --copy-border: #9b9b9b;
  --copy-ink: #f7f7f7;
  --lead: #d5d5d5;
  --shadow: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

code,
pre,
kbd {
  font-family:
    "SFMono-Regular", "Cascadia Code", "Fira Code", Menlo, Monaco, Consolas,
    monospace;
}

code,
kbd {
  background: var(--inline-code-bg);
  border: 1px solid var(--inline-code-border);
  border-radius: 5px;
  color: var(--inline-code-ink);
  padding: 0.1rem 0.28rem;
}

pre {
  margin: 0;
  overflow-x: auto;
  background: var(--code-bg);
  color: var(--code-ink);
  border-radius: 8px;
  padding: 1rem;
}

pre code {
  background: transparent;
  border: 0;
  color: inherit;
  padding: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 0.75rem;
  transform: translateY(-150%);
  background: var(--ink);
  color: var(--bg);
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  z-index: 20;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: var(--header-bg);
  backdrop-filter: blur(16px);
}

.topbar {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(220px, 360px) auto auto;
  align-items: center;
  gap: 1rem;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0.8rem 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-weight: 760;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--bg);
  font-weight: 800;
}

.search-box {
  position: relative;
}

.search-box input {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface-strong);
  color: var(--ink);
  padding: 0.55rem 0.85rem;
  font: inherit;
}

.theme-toggle {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(64px, 1fr));
  gap: 0.2rem;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface-strong);
  padding: 0.18rem;
}

.theme-choice {
  min-height: 34px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 720;
  padding: 0.25rem 0.55rem;
}

.theme-choice:hover {
  color: var(--ink);
}

.theme-choice[aria-pressed="true"] {
  background: var(--ink);
  color: var(--bg);
}

.theme-choice:focus-visible,
.button:focus-visible,
.copy:focus-visible,
.toc-link:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.top-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.8rem;
  font-size: 0.94rem;
}

.top-links a {
  color: var(--muted);
  text-decoration: none;
}

.top-links a:hover {
  color: var(--ink);
}

.layout {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  align-items: start;
  max-width: 1440px;
  margin: 0 auto;
}

.sidebar {
  position: sticky;
  top: 67px;
  height: calc(100vh - 67px);
  overflow-y: auto;
  border-right: 1px solid var(--line);
  padding: 1.5rem 1rem 2rem 1.25rem;
}

.sidebar h2 {
  margin: 0 0 0.6rem;
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

.toc {
  display: grid;
  gap: 0.15rem;
}

.toc-link {
  display: block;
  border-radius: 7px;
  color: var(--muted);
  padding: 0.42rem 0.55rem;
  text-decoration: none;
}

.toc-link:hover,
.toc-link.active {
  background: var(--state-muted-bg);
  color: var(--accent-strong);
}

.main {
  min-width: 0;
  padding: 2rem 1.5rem 5rem;
}

.hero {
  border-bottom: 1px solid var(--line);
  padding: 2rem 0 2.4rem;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  max-width: 820px;
  margin: 0;
  font-size: 3.25rem;
  line-height: 1.04;
  letter-spacing: 0;
}

.lead {
  max-width: 840px;
  margin: 1.2rem 0 0;
  color: var(--lead);
  font-size: 1.13rem;
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.4rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface-strong);
  color: var(--ink);
  font-weight: 700;
  padding: 0.55rem 0.85rem;
  text-decoration: none;
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--bg);
}

.section {
  border-bottom: 1px solid var(--line);
  padding: 2.4rem 0;
}

.section.is-filtered {
  display: none;
}

.section h2 {
  margin: 0 0 0.75rem;
  font-size: 1.75rem;
  line-height: 1.22;
  letter-spacing: 0;
}

.section h3 {
  margin: 1.5rem 0 0.55rem;
  font-size: 1.12rem;
  line-height: 1.3;
  letter-spacing: 0;
}

.section p,
.section ul,
.section ol,
.section dl {
  max-width: 920px;
}

.section p {
  margin: 0.65rem 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}

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

.card,
.callout,
.table-wrap,
.code-wrap,
.diagram,
.repo-map {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.card {
  padding: 1rem;
}

.card h3 {
  margin-top: 0;
}

.card p:last-child,
.callout p:last-child {
  margin-bottom: 0;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.85rem;
}

.tag {
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--state-muted-bg);
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.22rem 0.5rem;
}

.tag.amber {
  background: var(--state-strong-bg);
  color: var(--ink);
}

.tag.green {
  background: var(--surface-strong);
  color: var(--ink);
}

.callout {
  border-left: 4px solid var(--accent);
  margin: 1rem 0;
  padding: 0.85rem 1rem;
}

.callout.warning {
  border-left-color: var(--line-strong);
}

.callout.danger {
  border-left-color: var(--ink);
}

.repo-map {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: 1.4rem 0;
  overflow: hidden;
}

.repo-node {
  border-right: 1px solid var(--line);
  padding: 1rem;
}

.repo-node:last-child {
  border-right: 0;
}

.repo-node strong {
  display: block;
  margin-bottom: 0.35rem;
}

.diagram {
  margin: 1.25rem 0;
  padding: 1rem;
}

.flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
  align-items: stretch;
}

.flow-step {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-strong);
  padding: 0.85rem;
  min-height: 112px;
}

.flow-step strong {
  display: block;
  color: var(--accent-strong);
}

.table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 0.72rem 0.85rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--table-head);
  font-size: 0.8rem;
  text-transform: uppercase;
}

tr:last-child td {
  border-bottom: 0;
}

.code-wrap {
  margin: 1rem 0;
  overflow: hidden;
}

.code-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  border-bottom: 1px solid var(--line-strong);
  background: var(--code-bg);
  color: var(--code-ink);
  padding: 0.55rem 0.75rem;
  font-size: 0.86rem;
}

.copy {
  border: 1px solid var(--copy-border);
  border-radius: 6px;
  background: transparent;
  color: var(--copy-ink);
  cursor: pointer;
  font: inherit;
  padding: 0.25rem 0.5rem;
}

.definition-list {
  display: grid;
  gap: 0.75rem;
}

.definition-list div {
  border-left: 3px solid var(--line-strong);
  padding-left: 0.75rem;
}

.definition-list dt {
  font-weight: 760;
}

.definition-list dd {
  margin: 0.15rem 0 0;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 1.4rem 1.25rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1440px;
  margin: 0 auto;
}

@media (max-width: 1080px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  .grid,
  .grid.two,
  .repo-map,
  .flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .topbar {
    grid-template-columns: 1fr;
  }

  .top-links {
    justify-content: flex-start;
  }

  .main {
    padding-inline: 1rem;
  }

  h1 {
    font-size: 2.25rem;
  }

  .toc,
  .grid,
  .grid.two,
  .repo-map,
  .flow {
    grid-template-columns: 1fr;
  }

  .repo-node {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .repo-node:last-child {
    border-bottom: 0;
  }
}