@font-face {
  font-family: "Assistant";
  src: url("assets/fonts/Assistant-Regular-Latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  unicode-range: U+0020-007E;
}

@font-face {
  font-family: "Assistant";
  src: url("assets/fonts/Assistant-SemiBold-Latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  unicode-range: U+0020-007E;
}

@font-face {
  font-family: "Assistant";
  src: url("assets/fonts/Assistant-Bold-Latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  unicode-range: U+0020-007E;
}

:root {
  color-scheme: light;
  --ink: #1b1b1f;
  --muted: #5c5c5c;
  --quiet: #7a7a7a;
  --paper: #f6f6f9;
  --surface: #ffffff;
  --surface-high: #f1f0ff;
  --surface-low: #ececf4;
  --line: #dfdfe8;
  --line-strong: #b9b9c7;
  --primary: #6965db;
  --primary-hover: #5753d0;
  --success: #2d9b59;
  --danger: #9b3b3b;
  --header-height: 70px;
  --radius-compact: 6px;
  --radius-control: 8px;
  --font-interface: "Assistant", "PingFang SC", "Microsoft YaHei",
    "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-cjk: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC",
    -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-code: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --shadow-island: 0 0 1px rgba(0, 0, 0, 0.17),
    0 0 3px rgba(0, 0, 0, 0.08), 0 7px 14px rgba(0, 0, 0, 0.05);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 28px);
  background: var(--paper);
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  background-image: radial-gradient(circle, rgba(27, 27, 31, 0.11) 1px, transparent 1px);
  background-size: 22px 22px;
  font-family: var(--font-interface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.integration-page-zh {
  font-family: var(--font-cjk);
}

button,
a {
  font: inherit;
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
}

a {
  color: inherit;
  text-underline-offset: 0.22em;
  text-decoration-thickness: 1px;
}

::selection {
  color: var(--ink);
  background: #d8d6ff;
}

* {
  scrollbar-color: #a8a6cf transparent;
  scrollbar-width: thin;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  color: #fff;
  background: var(--ink);
  border-radius: var(--radius-control);
  transform: translateY(-160%);
  transition: transform 180ms var(--ease-out);
}

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

.integration-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-height);
  padding: 12px clamp(18px, 2.5vw, 36px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 72%, transparent);
}

.integration-brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 0.96rem;
  font-weight: 700;
}

.integration-brand img {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-control);
}

.brand-route {
  min-width: 0;
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
}

.brand-route::before {
  content: "";
  width: 1px;
  height: 16px;
  background: var(--line-strong);
}

.brand-route span {
  overflow: hidden;
  color: var(--muted);
  font-weight: 400;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.integration-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-link,
.download-button {
  min-height: 40px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-control);
  text-decoration: none;
  font-size: 0.84rem;
  font-weight: 600;
  transition: color 150ms ease, background-color 150ms ease;
}

.header-link:hover {
  background: var(--surface-low);
}

.download-button {
  padding-inline: 15px;
  color: #fff;
  background: var(--primary);
}

.download-button:hover {
  background: var(--primary-hover);
}

.integration-shell {
  width: min(1500px, calc(100% - 40px));
  margin: 0 auto;
  padding: calc(var(--header-height) + 36px) 0 84px;
  display: grid;
  grid-template-columns: 250px minmax(0, 760px) minmax(220px, 270px);
  justify-content: center;
  align-items: start;
  gap: clamp(24px, 3vw, 48px);
}

.integration-index,
.evidence-rail {
  position: sticky;
  top: calc(var(--header-height) + 28px);
}

.integration-index {
  min-width: 0;
}

.index-title {
  margin: 0 0 18px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--muted);
}

.host-switcher {
  padding: 6px;
  display: grid;
  gap: 2px;
  background: var(--surface);
  border-radius: var(--radius-control);
  box-shadow: var(--shadow-island);
}

.host-switcher button {
  min-height: 42px;
  padding: 0 11px;
  display: grid;
  grid-template-columns: 8px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  text-align: left;
  background: transparent;
  border: 0;
  border-radius: var(--radius-compact);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
}

.host-switcher button::before {
  content: "";
  width: 7px;
  height: 7px;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
}

.host-switcher button:hover {
  background: var(--surface-low);
}

.host-switcher button[aria-selected="true"] {
  color: var(--primary-hover);
  background: var(--surface-high);
}

.host-switcher button[aria-selected="true"]::before {
  background: var(--primary);
  border-color: var(--primary);
}

.section-nav {
  margin-top: 28px;
  padding-top: 18px;
  display: grid;
  border-top: 1px solid var(--line-strong);
}

.section-nav a {
  min-height: 34px;
  padding: 7px 9px;
  display: flex;
  align-items: center;
  color: var(--muted);
  border-radius: var(--radius-compact);
  text-decoration: none;
  font-size: 0.84rem;
}

.section-nav a:hover {
  color: var(--ink);
  background: color-mix(in srgb, var(--surface) 68%, transparent);
}

.section-nav a.is-current {
  color: var(--primary-hover);
  background: var(--surface-high);
}

.guide-document {
  min-width: 0;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
}

.guide-hero {
  padding: clamp(38px, 6vw, 72px) clamp(28px, 5vw, 64px) 48px;
  color: #fff;
  background: var(--ink);
}

.guide-hero h1 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(2.5rem, 5vw, 3.65rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.guide-hero > p {
  max-width: 63ch;
  margin: 24px 0 0;
  color: #d8d8de;
  font-size: 1.04rem;
  line-height: 1.65;
}

.guide-status {
  margin-top: 30px;
  padding-top: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #bfbfc9;
  border-top: 1px solid #3b3b42;
  font-size: 0.82rem;
}

.guide-status::before {
  content: "";
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  background: #8b87f1;
  border-radius: 2px;
}

.fact-ledger {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
}

.fact-ledger > div {
  min-width: 0;
  padding: 24px 22px;
  border-right: 1px solid var(--line);
}

.fact-ledger > div:last-child {
  border-right: 0;
}

.fact-ledger dt {
  color: var(--quiet);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.fact-ledger dd {
  margin: 9px 0 0;
  font-size: 0.94rem;
  line-height: 1.45;
}

.guide-section {
  padding: 70px clamp(28px, 5vw, 64px);
  scroll-margin-top: calc(var(--header-height) + 22px);
}

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

.guide-section h2 {
  max-width: 18ch;
  margin: 0;
  font-size: clamp(1.8rem, 3.2vw, 2.45rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.section-intro {
  max-width: 68ch;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.65;
}

.installation-steps {
  margin: 42px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: install-step;
}

.installation-steps li {
  counter-increment: install-step;
  padding: 28px 0;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 20px;
  border-top: 1px solid var(--line);
}

.installation-steps li::before {
  content: counter(install-step, decimal-leading-zero);
  color: var(--quiet);
  font-variant-numeric: tabular-nums;
  font-size: 0.78rem;
  font-weight: 600;
}

.installation-steps h3,
.verification-block h3,
.troubleshooting-body h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.installation-steps p,
.verification-block p,
.troubleshooting-body p,
.troubleshooting-body li {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.host-artifact {
  margin-top: 14px;
  padding: 10px 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface-low);
  border-radius: var(--radius-compact);
  font-family: var(--font-code);
  font-size: 0.78rem;
}

.verification-grid {
  margin-top: 38px;
  display: grid;
  gap: 34px;
}

.verification-block {
  min-width: 0;
}

.code-block {
  position: relative;
  margin-top: 14px;
  padding: 18px 78px 18px 18px;
  overflow-x: auto;
  color: #f3f3f5;
  background: #27272c;
  border-radius: var(--radius-compact);
}

.code-block code,
.prompt-block code {
  font-family: var(--font-code);
  font-size: 0.82rem;
  line-height: 1.55;
}

.copy-button {
  position: absolute;
  top: 9px;
  right: 9px;
  min-height: 34px;
  padding: 0 10px;
  color: #e3e3e9;
  background: #3b3b42;
  border: 0;
  border-radius: var(--radius-compact);
  cursor: pointer;
  font-size: 0.76rem;
  font-weight: 600;
}

.copy-button:hover {
  background: #4b4b54;
}

.prompt-block {
  position: relative;
  margin-top: 34px;
  padding: 26px 90px 26px 26px;
  background: var(--surface-high);
  border-radius: var(--radius-compact);
}

.prompt-block code {
  display: block;
  font-family: var(--font-interface);
  font-size: 1rem;
  line-height: 1.6;
}

.prompt-block .copy-button {
  color: var(--primary-hover);
  background: #dedcff;
}

.host-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.cli-list {
  margin-top: 38px;
  border-top: 1px solid var(--line);
}

.cli-row {
  padding: 22px 0;
  display: grid;
  grid-template-columns: minmax(145px, 0.38fr) minmax(0, 1fr);
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.cli-row h3 {
  margin: 2px 0 0;
  font-size: 0.9rem;
}

.cli-command {
  min-width: 0;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.cli-command code {
  min-width: 0;
  overflow-wrap: anywhere;
  color: #34343b;
  font-family: var(--font-code);
  font-size: 0.78rem;
  line-height: 1.55;
}

.session-requirement {
  flex: 0 0 auto;
  padding: 3px 6px;
  color: var(--primary-hover);
  background: var(--surface-high);
  border-radius: 4px;
  font-size: 0.66rem;
  font-weight: 700;
}

.contract-link,
.source-link {
  margin-top: 24px;
  display: inline-flex;
  align-items: center;
  color: var(--primary-hover);
  font-size: 0.88rem;
  font-weight: 600;
}

.troubleshooting-list {
  margin-top: 38px;
  border-top: 1px solid var(--line);
}

.troubleshooting-item {
  border-bottom: 1px solid var(--line);
}

.troubleshooting-item summary {
  min-height: 64px;
  padding: 18px 42px 18px 0;
  display: flex;
  align-items: center;
  cursor: pointer;
  list-style: none;
  font-size: 0.94rem;
  font-weight: 600;
  line-height: 1.45;
}

.troubleshooting-item summary::-webkit-details-marker {
  display: none;
}

.troubleshooting-item summary::after {
  content: "+";
  margin-left: auto;
  color: var(--quiet);
  font-size: 1.2rem;
  font-weight: 400;
}

.troubleshooting-item[open] summary::after {
  content: "−";
}

.troubleshooting-body {
  padding: 0 0 28px;
}

.troubleshooting-body h3 {
  margin-top: 20px;
  font-size: 0.78rem;
  color: var(--quiet);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.troubleshooting-body ul {
  margin: 8px 0 0;
  padding-left: 20px;
}

.do-not-list li::marker {
  color: var(--danger);
}

.no-script-note {
  margin: 24px 0 0;
  padding: 14px 16px;
  color: var(--muted);
  background: var(--surface-low);
  border-radius: var(--radius-compact);
  font-size: 0.9rem;
  line-height: 1.5;
}

.evidence-rail {
  min-width: 0;
  padding-top: 6px;
}

.evidence-group {
  padding: 20px 0;
  border-top: 1px solid var(--line-strong);
}

.evidence-group:first-child {
  border-top: 0;
  padding-top: 0;
}

.evidence-group h2 {
  margin: 0 0 12px;
  color: var(--quiet);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.evidence-group p,
.evidence-group li {
  color: var(--muted);
  font-size: 0.83rem;
  line-height: 1.55;
}

.evidence-group p {
  margin: 0;
}

.evidence-group ul {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
  list-style: none;
}

.evidence-path {
  display: block;
  overflow-wrap: anywhere;
  color: var(--ink);
  font-family: var(--font-code);
  font-size: 0.75rem;
}

.evidence-status {
  display: flex;
  align-items: flex-start;
  gap: 9px;
}

.evidence-status::before {
  content: "";
  width: 7px;
  height: 7px;
  margin-top: 5px;
  flex: 0 0 auto;
  background: var(--primary);
  border-radius: 2px;
}

@media (max-width: 1279px) {
  .integration-shell {
    grid-template-columns: 236px minmax(0, 760px);
  }

  .evidence-rail {
    position: static;
    grid-column: 2;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    padding: 0 clamp(28px, 5vw, 64px) 56px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-top: 0;
    border-radius: 0 0 var(--radius-control) var(--radius-control);
  }

  .guide-document {
    border-radius: var(--radius-control) var(--radius-control) 0 0;
  }
}

@media (max-width: 820px) {
  :root {
    --header-height: 62px;
  }

  .integration-header {
    padding: 9px 18px;
    background: var(--paper);
  }

  .brand-route span,
  .header-github {
    display: none;
  }

  .brand-route::before {
    display: none;
  }

  .header-link,
  .download-button {
    min-height: 42px;
    padding-inline: 10px;
  }

  .download-button {
    font-size: 0.78rem;
  }

  .integration-shell {
    width: min(100%, 760px);
    padding-top: calc(var(--header-height) + 14px);
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .integration-index {
    position: sticky;
    top: var(--header-height);
    z-index: 30;
    width: 100%;
    padding: 8px 18px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
  }

  .index-title,
  .section-nav {
    display: none;
  }

  .host-switcher {
    grid-template-columns: repeat(3, 1fr);
  }

  .host-switcher button {
    min-height: 44px;
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 0;
    text-align: center;
  }

  .host-switcher button::before {
    display: none;
  }

  .guide-document {
    width: calc(100% - 36px);
    margin: 18px;
    border-radius: var(--radius-control);
  }

  .evidence-rail {
    width: calc(100% - 36px);
    margin: 0 18px 48px;
    padding: 32px 28px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
  }

  .guide-hero {
    padding-top: 48px;
  }

  .fact-ledger {
    grid-template-columns: 1fr;
  }

  .fact-ledger > div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .fact-ledger > div:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 520px) {
  .integration-brand > span:first-of-type,
  .language-link {
    display: none;
  }

  .integration-header-actions {
    gap: 4px;
  }

  .download-button {
    padding-inline: 11px;
  }

  .guide-document,
  .evidence-rail {
    width: calc(100% - 36px);
    margin-inline: 18px;
  }

  .guide-hero,
  .guide-section {
    padding-inline: 24px;
  }

  .guide-hero h1 {
    font-size: 2.45rem;
  }

  .guide-section {
    padding-block: 58px;
  }

  .installation-steps li {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }

  .code-block,
  .prompt-block {
    padding: 58px 16px 18px;
  }

  .copy-button {
    right: auto;
    left: 12px;
  }

  .cli-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .cli-command {
    display: grid;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}