:root {
  color-scheme: light;
  --canvas: #f5f7f5;
  --surface: #ffffff;
  --surface-soft: #edf2ee;
  --ink: #17211d;
  --ink-soft: #53615b;
  --line: #d7dfda;
  --line-strong: #b7c4bc;
  --green: #28774b;
  --green-dark: #1d5938;
  --green-soft: #dff1e5;
  --amber: #a95f0e;
  --amber-soft: #fff0d8;
  --red: #a33a3a;
  --red-soft: #fae5e5;
  --blue: #24649b;
  --blue-soft: #e2effa;
  --code: #14211b;
  --code-ink: #eaf5ee;
  --sidebar: 286px;
  --content: 920px;
  --radius: 6px;
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 28px;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.72;
  letter-spacing: 0;
}

a {
  color: var(--green-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--green);
}

button,
input {
  font: inherit;
  letter-spacing: 0;
}

button {
  cursor: pointer;
}

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 20;
  display: flex;
  width: var(--sidebar);
  flex-direction: column;
  overflow-y: auto;
  border-right: 1px solid var(--line);
  background: var(--surface);
}

.brand {
  display: flex;
  min-height: 78px;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.brand strong,
.brand span {
  display: block;
}

.brand strong {
  font-size: 14px;
  line-height: 1.35;
}

.brand span {
  margin-top: 2px;
  color: var(--ink-soft);
  font-size: 12px;
}

.search-wrap {
  padding: 16px 16px 10px;
}

.search-wrap label {
  display: block;
  margin-bottom: 6px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 700;
}

.search-wrap input {
  width: 100%;
  height: 38px;
  padding: 0 11px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  outline: none;
  background: var(--canvas);
  color: var(--ink);
}

.search-wrap input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(40, 119, 75, 0.13);
}

.search-result {
  min-height: 20px;
  margin: 6px 1px 0;
  color: var(--ink-soft);
  font-size: 11px;
}

.sidebar nav {
  padding: 4px 10px 20px;
}

.sidebar nav a {
  display: block;
  margin: 2px 0;
  padding: 7px 10px;
  border-left: 3px solid transparent;
  border-radius: 0 4px 4px 0;
  color: var(--ink-soft);
  font-size: 13px;
  text-decoration: none;
}

.sidebar nav a:hover,
.sidebar nav a.active {
  border-left-color: var(--green);
  background: var(--surface-soft);
  color: var(--ink);
}

.sidebar-footer {
  margin-top: auto;
  padding: 14px 20px 20px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 12px;
}

.sidebar-footer a + a::before {
  margin: 0 7px;
  color: var(--line-strong);
  content: "/";
}

.language-switch {
  min-height: 32px;
  padding: 5px 10px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 700;
}

.language-switch:hover {
  border-color: var(--green);
  background: var(--green-soft);
}

.language-switch-floating {
  position: fixed;
  top: 16px;
  right: 20px;
  z-index: 25;
}

@media (min-width: 981px) {
  .language-switch-floating {
    right: 24px;
  }
}

@media print {
  .language-switch {
    display: none !important;
  }
}

/* Documentation landing page */
.landing-body {
  min-height: 100vh;
}

.landing-nav {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
}

.landing-nav-inner,
.landing-shell {
  width: min(calc(100% - 64px), 1120px);
  margin: 0 auto;
}

.landing-nav-inner {
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.landing-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.landing-brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.landing-brand strong,
.landing-brand small {
  display: block;
}

.landing-brand strong {
  line-height: 1.35;
}

.landing-brand small {
  margin-top: 2px;
  color: var(--ink-soft);
  font-size: 11px;
}

.landing-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.landing-links a {
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.landing-links a:hover {
  color: var(--green-dark);
}

.landing-hero {
  padding: 76px 0;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(223, 241, 229, 0.72), transparent 48%),
    var(--surface);
}

.landing-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
  gap: 64px;
  align-items: center;
}

.landing-hero-grid > *,
.landing-split > * {
  min-width: 0;
}

.landing-hero h1 {
  max-width: 730px;
  font-size: clamp(38px, 5vw, 58px);
}

.landing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  border-color: var(--green-dark);
  background: var(--green-dark);
  color: #fff;
}

.button.primary:hover {
  border-color: var(--green);
  background: var(--green);
  color: #fff;
}

.button.secondary {
  background: var(--surface);
  color: var(--ink);
}

.button.secondary:hover {
  background: var(--surface-soft);
  color: var(--green-dark);
}

.landing-summary {
  width: 100%;
  padding: 24px;
  border: 1px solid var(--line);
  border-top: 4px solid var(--green);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 18px 50px rgba(23, 33, 29, 0.08);
}

.landing-summary h2 {
  font-size: 22px;
}

.landing-feature-list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.landing-feature-list li {
  display: flex;
  gap: 13px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.landing-feature-list li > span {
  color: var(--green);
  font: 700 11px/1.6 "JetBrains Mono", "Cascadia Code", Consolas, monospace;
}

.landing-feature-list strong,
.landing-feature-list small {
  display: block;
}

.landing-feature-list small {
  margin-top: 2px;
  color: var(--ink-soft);
  line-height: 1.5;
}

.landing-section {
  padding: 72px 0;
}

.landing-section + .landing-section {
  border-top: 1px solid var(--line);
}

.landing-section-muted {
  background: var(--surface-soft);
}

.landing-intro {
  max-width: 680px;
  color: var(--ink-soft);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.guide-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  min-height: 250px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.guide-card:hover {
  border-color: #9bc7a9;
  color: var(--ink);
  box-shadow: 0 16px 36px rgba(23, 33, 29, 0.09);
  transform: translateY(-2px);
}

.guide-index {
  color: var(--green);
  font: 800 12px/1.6 "JetBrains Mono", "Cascadia Code", Consolas, monospace;
}

.guide-card h3 {
  margin-top: 18px;
  font-size: 23px;
}

.guide-card p {
  color: var(--ink-soft);
}

.guide-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 800;
}

.guide-link b {
  font-size: 18px;
  transition: transform 160ms ease;
}

.guide-card:hover .guide-link b {
  transform: translateX(4px);
}

.landing-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.8fr);
  gap: 72px;
  align-items: center;
}

.landing-steps {
  margin-top: 26px;
}

.landing-command {
  margin-top: 0;
  box-shadow: 0 18px 45px rgba(23, 33, 29, 0.12);
}

.landing-command-note {
  padding: 14px 16px 16px;
  border-top: 1px solid #2d3e36;
  color: #9eb2a7;
  font-size: 12px;
}

.landing-command-note strong,
.landing-command-note code {
  display: block;
}

.landing-command-note code {
  margin-top: 7px;
  padding: 0;
  background: transparent;
  color: var(--code-ink);
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.resource-item {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
}

.resource-item:hover {
  border-color: #9bc7a9;
  background: var(--green-soft);
  color: var(--ink);
}

.resource-item strong,
.resource-item span {
  display: block;
}

.resource-item span {
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 12px;
}

.landing-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.landing-footer .landing-shell {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 24px;
  padding-bottom: 24px;
  color: var(--ink-soft);
  font-size: 12px;
}

.nav-toggle {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 40;
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font-size: 22px;
  line-height: 1;
}

.page {
  min-height: 100vh;
  margin-left: var(--sidebar);
}

.doc-header {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.header-inner,
.content,
.doc-footer-inner {
  width: min(calc(100% - 64px), var(--content));
  margin: 0 auto;
}

.header-inner {
  padding: 56px 0 40px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.28;
  letter-spacing: 0;
}

h1 {
  max-width: 780px;
  font-size: 38px;
}

.lede {
  max-width: 760px;
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: 17px;
}

.meta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.meta-item {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--canvas);
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 700;
}

.meta-item.ok {
  border-color: #acd2b8;
  background: var(--green-soft);
  color: var(--green-dark);
}

.content {
  padding: 12px 0 72px;
}

.doc-section {
  padding: 42px 0 46px;
  border-bottom: 1px solid var(--line);
}

.doc-section[hidden] {
  display: none;
}

.section-kicker {
  display: block;
  margin-bottom: 6px;
  color: var(--green);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

h2 {
  font-size: 25px;
}

h3 {
  margin-top: 28px;
  font-size: 17px;
}

p {
  margin: 12px 0 0;
}

ul,
ol {
  margin: 13px 0 0;
  padding-left: 24px;
}

li + li {
  margin-top: 6px;
}

code,
kbd {
  border-radius: 3px;
  background: #e8ede9;
  color: #254535;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.9em;
}

code {
  padding: 2px 5px;
}

kbd {
  padding: 2px 6px;
  border: 1px solid var(--line-strong);
  box-shadow: inset 0 -1px 0 var(--line-strong);
}

.callout {
  margin-top: 18px;
  padding: 14px 16px;
  border: 1px solid #acd2b8;
  border-left: 4px solid var(--green);
  border-radius: var(--radius);
  background: var(--green-soft);
}

.callout.warning {
  border-color: #edc98c;
  border-left-color: var(--amber);
  background: var(--amber-soft);
}

.callout.danger {
  border-color: #e2aaaa;
  border-left-color: var(--red);
  background: var(--red-soft);
}

.callout.info {
  border-color: #abcce5;
  border-left-color: var(--blue);
  background: var(--blue-soft);
}

.callout strong {
  display: block;
  margin-bottom: 3px;
}

.step-list {
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.step-list li {
  position: relative;
  min-height: 42px;
  padding: 0 0 18px 48px;
  border-left: 1px solid var(--line-strong);
  counter-increment: step;
}

.step-list li:last-child {
  border-left-color: transparent;
}

.step-list li::before {
  position: absolute;
  top: -2px;
  left: -17px;
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid #9bc7a9;
  border-radius: 50%;
  background: var(--surface);
  color: var(--green-dark);
  content: counter(step);
  font-size: 12px;
  font-weight: 800;
}

.step-list strong {
  display: block;
}

.table-wrap {
  margin-top: 18px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th,
td {
  padding: 11px 13px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface-soft);
  color: var(--ink-soft);
  font-size: 11px;
  text-transform: uppercase;
}

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

.code-block {
  margin-top: 18px;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--code);
}

.code-toolbar {
  display: flex;
  min-height: 38px;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px 0 14px;
  border-bottom: 1px solid #2d3e36;
  color: #9eb2a7;
  font-size: 11px;
}

.copy-button {
  min-width: 48px;
  height: 27px;
  padding: 0 9px;
  border: 1px solid #40554a;
  border-radius: 4px;
  background: transparent;
  color: #dbe9e0;
  font-size: 11px;
}

.copy-button:hover {
  border-color: #72a284;
  background: #21332a;
}

pre {
  margin: 0;
  overflow-x: auto;
  padding: 16px;
  color: var(--code-ink);
  font: 12px/1.65 "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  white-space: pre;
}

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

.metric-grid,
.path-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.metric,
.path-item {
  min-width: 0;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.metric strong,
.path-item strong {
  display: block;
  margin-bottom: 5px;
}

.metric span,
.path-item span {
  color: var(--ink-soft);
  font-size: 13px;
}

.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.flow-step {
  position: relative;
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.flow-step:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -17px;
  color: var(--green);
  content: "→";
  font-size: 20px;
  transform: translateY(-50%);
}

.flow-step b,
.flow-step small {
  display: block;
}

.flow-step small {
  margin-top: 5px;
  color: var(--ink-soft);
  line-height: 1.5;
}

.tag {
  display: inline-block;
  margin: 2px 4px 2px 0;
  padding: 2px 7px;
  border-radius: 3px;
  background: var(--surface-soft);
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 700;
}

.tag.sync {
  background: var(--green-soft);
  color: var(--green-dark);
}

.tag.async {
  background: var(--blue-soft);
  color: var(--blue);
}

.tag.file {
  background: var(--amber-soft);
  color: var(--amber);
}

.checklist {
  padding-left: 0;
  list-style: none;
}

.checklist li {
  position: relative;
  padding-left: 28px;
}

.checklist li::before {
  position: absolute;
  top: 3px;
  left: 0;
  display: grid;
  width: 18px;
  height: 18px;
  place-items: center;
  border: 1px solid #9bc7a9;
  border-radius: 3px;
  color: var(--green-dark);
  content: "✓";
  font-size: 11px;
  font-weight: 900;
}

.empty-search {
  display: none;
  margin: 48px 0;
  padding: 22px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  color: var(--ink-soft);
  text-align: center;
}

.empty-search.visible {
  display: block;
}

.doc-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.doc-footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 0;
  color: var(--ink-soft);
  font-size: 12px;
}

.back-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font-size: 19px;
  text-decoration: none;
  box-shadow: 0 5px 18px rgba(23, 33, 29, 0.08);
}

.back-top:hover {
  background: var(--surface-soft);
}

@media (max-width: 980px) {
  .sidebar {
    width: min(86vw, 310px);
    transform: translateX(-105%);
    transition: transform 180ms ease;
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: 12px 0 36px rgba(23, 33, 29, 0.16);
  }

  .nav-toggle {
    display: block;
  }

  .page {
    margin-left: 0;
  }

  .header-inner {
    padding-top: 78px;
  }

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

  .landing-hero-grid,
  .landing-split {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .landing-summary {
    max-width: 680px;
  }
}

@media (max-width: 680px) {
  .header-inner,
  .content,
  .doc-footer-inner,
  .landing-nav-inner,
  .landing-shell {
    width: min(calc(100% - 32px), var(--content));
  }

  .landing-nav-inner {
    min-height: 68px;
  }

  .landing-links a:not(:first-child) {
    display: none;
  }

  .landing-hero {
    padding: 52px 0;
  }

  .landing-hero h1 {
    font-size: 35px;
    overflow-wrap: anywhere;
  }

  .landing-hero .meta-strip {
    gap: 6px;
  }

  .landing-hero .meta-item {
    font-size: 11px;
  }

  .landing-section {
    padding: 52px 0;
  }

  .guide-grid,
  .resource-grid {
    grid-template-columns: 1fr;
  }

  .guide-card {
    min-height: 0;
    padding: 22px;
  }

  .landing-split {
    gap: 32px;
  }

  h1 {
    font-size: 29px;
  }

  h2 {
    font-size: 22px;
  }

  .lede {
    font-size: 15px;
  }

  .doc-section {
    padding: 34px 0 38px;
  }

  .metric-grid,
  .path-grid,
  .flow {
    grid-template-columns: 1fr;
  }

  .flow {
    gap: 12px;
  }

  .flow-step:not(:last-child)::after {
    top: auto;
    right: 50%;
    bottom: -20px;
    transform: translateX(50%) rotate(90deg);
  }

  .doc-footer-inner {
    flex-direction: column;
  }

  .landing-footer .landing-shell {
    flex-direction: column;
  }
}

@media print {
  .sidebar,
  .nav-toggle,
  .back-top,
  .copy-button,
  .landing-nav {
    display: none !important;
  }

  body,
  .page,
  .doc-header,
  .doc-footer {
    background: #fff;
  }

  .page {
    margin: 0;
  }

  .header-inner,
  .content,
  .doc-footer-inner {
    width: 100%;
  }

  .doc-section {
    break-inside: avoid;
  }

  a {
    color: inherit;
  }
}