:root {
  --bg: #f7f8fb;
  --panel: #ffffff;
  --panel-soft: #f1f4f8;
  --text: #111827;
  --muted: #5b6676;
  --line: #d9e0ea;
  --line-strong: #bec8d6;
  --accent: #1464d2;
  --accent-dark: #0f4da0;
  --green: #177245;
  --amber: #a26100;
  --shadow: 0 16px 36px rgba(17, 24, 39, 0.08);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
}

.skip-link {
  position: fixed;
  left: 12px;
  top: 12px;
  z-index: 20;
  transform: translateY(-140%);
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  padding: 8px 12px;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 280px minmax(320px, 680px) 1fr;
  gap: 24px;
  align-items: center;
  min-height: 64px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  padding: 0 24px;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  min-width: 0;
}

.brand-lockup:hover {
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid #101827;
  background: #101827;
  color: #fff;
  font-weight: 760;
}

.brand-lockup strong,
.brand-lockup em {
  display: block;
  white-space: nowrap;
}

.brand-lockup strong {
  font-size: 14px;
  letter-spacing: 0;
}

.brand-lockup em {
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
}

.search-wrap {
  position: relative;
  width: min(100%, 680px);
}

.search-box {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line-strong);
  background: var(--panel);
  min-height: 42px;
  padding: 0 12px;
}

.search-box span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 720;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.search-box input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
}

.search-results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  max-height: min(60vh, 560px);
  overflow: auto;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.search-results a,
.search-results div {
  display: block;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.search-results a:hover {
  background: #f2f6fb;
  text-decoration: none;
}

.search-results strong {
  display: block;
  color: var(--text);
  font-size: 14px;
}

.search-results span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-top: 3px;
}

.docs-shell {
  display: grid;
  grid-template-columns: minmax(240px, 280px) minmax(0, 1fr) minmax(220px, 260px);
  min-height: calc(100vh - 64px);
}

.sidebar,
.toc {
  background: var(--panel);
}

.sidebar {
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow: auto;
  border-right: 1px solid var(--line);
}

.sidebar-head {
  display: flex;
  align-items: center;
  min-height: 56px;
  padding: 0 20px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-tree {
  padding: 16px 12px 32px;
}

.nav-brand {
  margin-bottom: 18px;
}

.nav-brand-title {
  display: block;
  padding: 8px;
  color: var(--text);
  font-size: 13px;
  font-weight: 760;
}

.nav-product {
  margin: 2px 0 8px;
}

.nav-product-title {
  display: block;
  padding: 6px 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 720;
}

.nav-page {
  display: block;
  border-left: 2px solid transparent;
  color: #334155;
  font-size: 13px;
  padding: 6px 8px 6px 14px;
}

.nav-page:hover {
  background: #f2f6fb;
  text-decoration: none;
}

.nav-page[aria-current="page"] {
  border-left-color: var(--accent);
  background: #eaf2ff;
  color: var(--accent-dark);
  font-weight: 720;
}

.content {
  min-width: 0;
  background: var(--bg);
}

.doc-content {
  max-width: 980px;
  padding: 46px 56px 72px;
}

.eyebrow {
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 780;
  letter-spacing: 0.06em;
  margin: 0 0 12px;
  text-transform: uppercase;
}

.doc-content h1 {
  max-width: 800px;
  margin: 0;
  color: #0c1220;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.02;
  letter-spacing: 0;
}

.summary {
  max-width: 820px;
  margin: 20px 0 0;
  color: #334155;
  font-size: 18px;
}

.source-link {
  display: inline-flex;
  margin-top: 18px;
  border: 1px solid var(--line-strong);
  background: var(--panel);
  color: var(--text);
  padding: 9px 12px;
  font-size: 13px;
  font-weight: 720;
}

.source-link:hover {
  background: #f2f6fb;
  color: var(--accent-dark);
  text-decoration: none;
}

.doc-section {
  margin-top: 44px;
  border-top: 1px solid var(--line);
  padding-top: 30px;
}

.doc-section h2 {
  margin: 0 0 14px;
  color: #101827;
  font-size: 24px;
  letter-spacing: 0;
}

.doc-section h3 {
  margin: 26px 0 8px;
  font-size: 18px;
  letter-spacing: 0;
}

.doc-section p,
.doc-section li {
  color: #2f3a4c;
}

.doc-section ul {
  margin: 12px 0 0;
  padding-left: 22px;
}

.link-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.link-list a {
  display: block;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 12px 14px;
  color: var(--text);
  font-weight: 720;
}

.link-list a:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
  text-decoration: none;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.doc-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 16px;
}

.doc-card strong {
  display: block;
  color: #101827;
}

.doc-card p {
  margin: 8px 0 0;
  font-size: 14px;
}

.doc-card a {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  font-weight: 720;
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.status-strip div {
  border-left: 3px solid var(--accent);
  background: var(--panel);
  padding: 12px 14px;
}

.status-strip span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 720;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.status-strip strong {
  display: block;
  margin-top: 4px;
  font-size: 14px;
}

.toc {
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow: auto;
  border-left: 1px solid var(--line);
}

.toc-inner {
  padding: 24px 18px;
}

.toc h2 {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 760;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.toc a {
  display: block;
  border-left: 2px solid var(--line);
  color: #465467;
  font-size: 13px;
  padding: 6px 0 6px 10px;
}

.toc a:hover {
  border-left-color: var(--accent);
  color: var(--accent-dark);
  text-decoration: none;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  font-size: 12px;
  padding: 16px 24px;
}

@media (max-width: 1080px) {
  .topbar {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 12px 16px;
  }

  .docs-shell {
    grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
  }

  .toc {
    display: none;
  }

  .sidebar {
    top: 114px;
    height: calc(100vh - 114px);
  }
}

@media (max-width: 760px) {
  .docs-shell {
    display: block;
  }

  .sidebar {
    position: static;
    height: auto;
    max-height: 45vh;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .doc-content {
    padding: 32px 20px 56px;
  }

  .footer {
    display: block;
  }

  .footer span {
    display: block;
    margin-top: 4px;
  }
}