:root {
  --bg: #f4f7fb;
  --bg2: #eef4fb;
  --panel: #ffffff;
  --text: #142033;
  --heading: #0f172a;
  --muted: #637083;
  --subtle: #8492a6;
  --border: #d9e3ef;
  --border-soft: #edf2f7;
  --accent: #164a8a;
  --accent-2: #1c6fb8;
  --accent-soft: #eaf3ff;
  --accent-softer: #f3f8ff;
  --code-bg: #101828;
  --code-text: #ecf1f7;
  --warning-bg: #fff8e8;
  --warning-border: #d89216;
  --shadow: 0 18px 48px rgba(15, 23, 42, .08);
  --shadow-soft: 0 8px 22px rgba(15, 23, 42, .055);
  --radius: 18px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(28,111,184,.12), transparent 34rem),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 32rem);
  line-height: 1.66;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto !important; border-radius: 12px; }
svg { max-width: 100%; height: auto; }
table { border-collapse: separate; border-spacing: 0; max-width: 100%; margin: 1.5rem 0; background: var(--panel); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
.doc-article table { width: auto; }
.doc-article table.APIlist, .doc-article table.CodeTable { width: 100%; }
th, td { border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: .72rem .86rem; vertical-align: top; }
th:last-child, td:last-child { border-right: 0; }
tr:last-child > th, tr:last-child > td { border-bottom: 0; }
th { background: #f2f6fb; color: var(--heading); text-align: left; font-weight: 760; }
code, pre, .p_Code, .f_Code {
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
code {
  background: #edf4fb;
  border: 1px solid #dbe8f5;
  border-radius: 6px;
  padding: .1rem .28rem;
  font-size: .92em;
}
pre, .p_Code, table.CodeTable {
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: 14px;
  padding: 1rem;
  overflow-x: auto;
}
pre code, .p_Code code, table.CodeTable code {
  background: transparent;
  border: 0;
  padding: 0;
  color: inherit;
}
.doc-article table.CodeTable p,
.doc-article table.CodeTable span {
  color: var(--code-text) !important;
}
.doc-article table.CodeTable,
.doc-article .dropdown-toggle-body {
  overflow-x: auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: .75rem 1rem;
  z-index: 1000;
}
.skip-link:focus { left: 1rem; top: 1rem; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: auto auto minmax(240px, 620px);
  gap: 1rem;
  align-items: center;
  padding: .82rem 1.35rem;
  border-bottom: 1px solid rgba(217,227,239,.86);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(16px);
}
.brand { display: flex; align-items: baseline; gap: .7rem; min-width: 230px; }
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 92px;
  height: 38px;
  padding: 0 .9rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 780;
  letter-spacing: .01em;
  box-shadow: 0 8px 22px rgba(22,74,138,.18);
}
.brand-mark:hover { text-decoration: none; }
.brand-subtitle { color: var(--muted); font-weight: 680; }
.menu-button {
  display: none;
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 999px;
  padding: .55rem .85rem;
  font-weight: 740;
}
.search-shell { position: relative; justify-self: stretch; }
#site-search {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: .72rem 1rem;
  font: inherit;
  background: #f8fafc;
  outline: none;
}
#site-search:focus {
  background: #fff;
  border-color: #9dc3ea;
  box-shadow: 0 0 0 4px rgba(28,111,184,.11);
}
.search-results {
  position: absolute;
  top: calc(100% + .5rem);
  right: 0;
  width: min(620px, 92vw);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.search-result {
  display: block;
  padding: .9rem 1rem;
  border-bottom: 1px solid var(--border-soft);
}
.search-result:last-child { border-bottom: 0; }
.search-result strong { display: block; color: var(--text); }
.search-result span { display: block; color: var(--muted); font-size: .92rem; margin-top: .15rem; }

.layout {
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr) 240px;
  gap: 1.25rem;
  max-width: 1540px;
  margin: 0 auto;
  padding: 1.25rem;
}
.sidebar {
  position: sticky;
  top: 74px;
  align-self: start;
  max-height: calc(100vh - 94px);
  overflow: auto;
  background: rgba(255,255,255,.96);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .75rem;
  box-shadow: var(--shadow-soft);
}
.sidebar-nav::before {
  content: "Contents";
  display: block;
  color: var(--subtle);
  font-size: .72rem;
  font-weight: 850;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: .25rem .55rem .65rem;
}
.nav-list { list-style: none; padding-left: 0; margin: 0; }
.nav-level-1, .nav-level-2, .nav-level-3 { padding-left: .55rem; }
.nav-item { margin: 1px 0; }
.nav-row {
  display: grid;
  grid-template-columns: 1.45rem minmax(0, 1fr);
  align-items: center;
  gap: .12rem;
  border-radius: 11px;
}
.nav-row:hover { background: #f7fafc; }
.nav-link {
  display: block;
  min-width: 0;
  padding: .43rem .55rem .43rem .2rem;
  border-radius: 10px;
  color: var(--muted);
  font-size: .94rem;
  line-height: 1.25;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nav-label {
  color: var(--heading);
  font-weight: 760;
}
.nav-folder-label { cursor: pointer; }
.nav-folder-label:focus-visible {
  outline: 3px solid rgba(28,111,184,.22);
  outline-offset: 2px;
}
.nav-toggle {
  display: inline-flex;
  width: 1.45rem;
  height: 1.45rem;
  align-items: center;
  justify-content: center;
  border: 0;
  background: transparent;
  color: var(--subtle);
  cursor: pointer;
  border-radius: 999px;
  padding: 0;
}
.nav-toggle:hover { background: var(--accent-soft); color: var(--accent); }
.nav-toggle span {
  display: inline-block;
  font-size: 1.15rem;
  line-height: 1;
  transform: rotate(0deg);
  transition: transform .15s ease;
}
.nav-item.is-open > .nav-row .nav-toggle span { transform: rotate(90deg); }
.nav-spacer { width: 1.45rem; height: 1.45rem; }
.nav-children {
  display: none;
  margin-left: .7rem;
  padding-left: .45rem;
  border-left: 1px solid var(--border-soft);
}
.nav-item.is-open > .nav-children { display: block; }
.nav-item.active > .nav-row {
  background: linear-gradient(90deg, var(--accent-soft), rgba(234,243,255,.35));
}
.nav-item.active > .nav-row .nav-link {
  color: var(--accent);
  font-weight: 800;
}
.nav-item.active-ancestor > .nav-row .nav-link {
  color: var(--heading);
  font-weight: 760;
}

.content { min-width: 0; }
.breadcrumbs {
  color: var(--muted);
  font-size: .92rem;
  margin: .35rem 0 1rem;
}
.breadcrumbs span, .breadcrumbs a { margin-right: .45rem; color: var(--muted); }

.doc-article {
  background: rgba(255,255,255,.98);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 4vw, 3.1rem);
  box-shadow: var(--shadow);
}
.doc-article > *:first-child { margin-top: 0; }
.doc-article h1 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.08;
  margin: 0 0 1.35rem;
  letter-spacing: -.035em;
  color: var(--heading);
}
.doc-article h2,
.doc-article .p_Heading1 .f_Heading1,
.doc-article .p_ParagraphHeading .f_ParagraphHeading {
  color: var(--heading);
  font-weight: 800;
}
.doc-article h2 {
  margin-top: 2.2rem;
  padding-top: .35rem;
  letter-spacing: -.02em;
}
.doc-article h3 { margin-top: 1.7rem; color: var(--heading); }
.doc-article p { margin: .65rem 0 1rem; }
.p_ParagraphHeading {
  margin-top: 2.1rem;
  font-size: 1.13rem;
}
.p_Notes,
p:has(.f_Notes) {
  margin: .85rem 0 1.1rem;
}
.f_Notes,
.p_Notes {
  display: block;
  background: var(--warning-bg);
  border-left: 4px solid var(--warning-border);
  padding: .55rem .75rem;
  border-radius: 10px;
  font-size: .88rem;
  line-height: 1.45;
}
.APIlist { font-size: .95rem; }
.p_ToggleHeader { margin: 1rem 0 .45rem; }
.f_ToggleHeader .dropdown-toggle,
.dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #f8fafc;
  padding: .55rem .8rem;
  color: var(--accent);
  font-weight: 760;
  cursor: pointer;
}
.f_ToggleHeader .dropdown-toggle:hover,
.dropdown-toggle:hover {
  background: var(--accent-soft);
  text-decoration: none;
}
.dropdown-toggle::before {
  content: "▸";
  font-size: .8rem;
  transition: transform .15s ease;
}
.dropdown-toggle[aria-expanded="true"]::before { transform: rotate(90deg); }
.dropdown-toggle-body {
  margin: .35rem 0 1.2rem !important;
  max-width: 100%;
}

.developer-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2rem, 5vw, 4rem);
  border-radius: 28px;
  background:
    radial-gradient(circle at 82% 18%, rgba(255,255,255,.24), transparent 18rem),
    linear-gradient(135deg, #0f376b, #1b67b1);
  color: #fff;
  margin: -.5rem 0 1.6rem;
  box-shadow: var(--shadow);
}
.developer-hero::after {
  content: "";
  position: absolute;
  right: -5rem;
  bottom: -7rem;
  width: 18rem;
  height: 18rem;
  border-radius: 999px;
  border: 44px solid rgba(255,255,255,.08);
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .74rem;
  color: var(--accent-2);
  font-weight: 860;
  margin: 0 0 .45rem;
}
.developer-hero .eyebrow { color: rgba(255,255,255,.84); }
.developer-hero h2 {
  position: relative;
  max-width: 930px;
  font-size: clamp(2.05rem, 5.3vw, 4rem);
  line-height: 1.02;
  margin: .2rem 0 1rem;
  letter-spacing: -.05em;
  color: #fff;
}
.developer-hero p {
  position: relative;
  max-width: 760px;
  font-size: 1.08rem;
  color: rgba(255,255,255,.88);
}
.home-actions {
  position: relative;
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  margin-top: 1.45rem;
}
.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.8rem;
  border-radius: 999px;
  padding: .68rem 1rem;
  font-weight: 820;
}
.primary-action { background: #fff; color: #123d72; }
.secondary-action { color: #fff; border: 1px solid rgba(255,255,255,.38); background: rgba(255,255,255,.09); }
.primary-action:hover,
.secondary-action:hover { text-decoration: none; }
.home-section {
  margin: 1.45rem 0;
}
.home-section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .8rem;
}
.home-section-heading h2 {
  margin: 0;
  padding: 0;
  font-size: clamp(1.25rem, 2.3vw, 1.7rem);
}
.home-feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .95rem;
}
.home-browse-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: .85rem;
}
.home-feature-card {
  display: block;
  min-height: 10.5rem;
  background: linear-gradient(180deg, #fff, #fbfdff);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 1.1rem;
  box-shadow: var(--shadow-soft);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.home-feature-card:hover {
  text-decoration: none;
  transform: translateY(-2px);
  border-color: #b9d3ed;
  box-shadow: var(--shadow);
}
.home-feature-card span {
  display: inline-flex;
  color: var(--accent-2);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: .16rem .52rem;
  font-size: .72rem;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: .75rem;
}
.home-feature-card strong {
  display: block;
  color: var(--heading);
  font-size: 1.12rem;
  line-height: 1.18;
}
.home-feature-card em {
  display: block;
  margin-top: .55rem;
  color: var(--muted);
  font-style: normal;
  font-size: .94rem;
}
.home-browse-grid .home-feature-card { min-height: 8rem; }
.home-quick-section {
  padding: 1.05rem;
  background: var(--accent-softer);
  border: 1px solid #d8e9fb;
  border-radius: 20px;
}
.home-quick-links {
  display: flex;
  gap: .6rem;
  flex-wrap: wrap;
}
.home-quick-link {
  display: inline-flex;
  align-items: center;
  border: 1px solid #c7def5;
  background: #fff;
  border-radius: 999px;
  padding: .52rem .78rem;
  font-weight: 760;
  color: var(--accent);
}
.home-quick-link:hover { text-decoration: none; background: var(--accent-soft); }
@media (max-width: 900px) {
  .home-feature-grid { grid-template-columns: 1fr; }
  .home-section-heading { display: block; }
}

.toc-card {
  position: sticky;
  top: 74px;
  align-self: start;
  max-height: calc(100vh - 94px);
  overflow: auto;
  color: var(--muted);
  font-size: .92rem;
  padding: 1rem .2rem;
}
.toc-title { color: var(--heading); font-weight: 820; margin-bottom: .55rem; }
#page-toc a {
  display: block;
  color: var(--muted);
  padding: .25rem 0;
}
#page-toc a:hover { color: var(--accent); }
#page-toc a.toc-level-2 { padding-left: .75rem; font-size: .88rem; }

@media (max-width: 1100px) {
  .layout { grid-template-columns: 280px minmax(0, 1fr); }
  .toc-card { display: none; }
}
@media (max-width: 760px) {
  .topbar { grid-template-columns: 1fr auto; }
  .search-shell { grid-column: 1 / -1; }
  .menu-button { display: inline-flex; justify-content: center; }
  .layout { grid-template-columns: 1fr; padding: .85rem; }
  .sidebar { display: none; position: static; max-height: none; }
  .sidebar.open { display: block; }
  .doc-article { padding: 1.25rem; }
}