:root {
  --bg: #0e1624;
  --bg-elevated: #121b2c;
  --surface: #182338;
  --surface-2: #1e2c45;
  --border: #2a3a55;
  --text: #e8eef7;
  --muted: #9aabc4;
  --diagram-bg: #8494a8;
  --accent: #3b9eff;
  --accent-2: #2ee6c8;
  --accent-hover: #7eb8ff;
  --code-bg: #0b1220;
  --danger: #f07178;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
  --radius: 14px;
  --max: 1120px;
  --header-h: 108px;
  --font: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
main { flex: 1; }
code, pre { font-family: var(--mono); }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 2px; }

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  background: var(--accent);
  color: #081018;
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 200;
}
.skip-link:focus { top: 12px; }

#site-header { min-height: var(--header-h); }

.util-bar {
  background: #0b1220;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--muted);
}
.util-bar-inner, .nav-inner, .footer-inner, .wrap {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}
.util-bar-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 7px 0;
  flex-wrap: wrap;
}
.util-bar a { color: var(--accent-2); }
.util-bar a:hover { color: #7ff5df; }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(18, 27, 44, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 16px;
}
.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.logo img { height: 40px; width: auto; display: block; }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  width: 42px;
  height: 42px;
  border-radius: 10px;
  cursor: pointer;
}
.nav-toggle:hover { border-color: var(--accent); color: var(--accent); }

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-list > li { position: relative; }
.nav-list > li > a {
  display: block;
  color: var(--text);
  background: none;
  border: 0;
  font: inherit;
  cursor: pointer;
  padding: 10px 12px;
  border-radius: 8px;
  white-space: nowrap;
}
.nav-list > li > a:hover,
.nav-list > li.is-active > a {
  color: var(--accent);
}
.nav-list a[aria-current="page"] { color: var(--accent); }
.nav-parent .fa-chevron-down { font-size: 0.7em; opacity: 0.65; margin-left: 2px; }

.dropdown {
  display: none;
  position: absolute;
  top: calc(100% - 2px);
  left: 0;
  min-width: 230px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px;
  box-shadow: var(--shadow);
  list-style: none;
  margin: 0;
  z-index: 90;
}
.nav-list > li:hover > .dropdown,
.nav-list > li:focus-within > .dropdown,
.nav-list > li.open > .dropdown { display: block; }
.dropdown a {
  display: block;
  color: var(--text);
  padding: 8px 10px;
  border-radius: 8px;
}
.dropdown a:hover, .dropdown a[aria-current="page"] {
  background: var(--surface-2);
  color: var(--accent);
}

.hero {
  background:
    radial-gradient(1100px 480px at 85% -20%, rgba(59, 158, 255, 0.22), transparent 55%),
    radial-gradient(800px 380px at 5% 10%, rgba(46, 230, 200, 0.12), transparent 50%),
    var(--bg);
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border);
}
.hero h1 {
  font-size: clamp(2.1rem, 4.5vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
}
.hero .lede {
  font-size: 1.2rem;
  color: var(--muted);
  max-width: 42rem;
  margin: 0 0 28px;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 10px;
  padding: 11px 18px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  color: #081018;
}
.btn-primary:hover { color: #081018; filter: brightness(1.08); }
.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost {
  background: transparent;
  color: var(--accent);
  border-color: rgba(59, 158, 255, 0.35);
}

.section { padding: 56px 0; }
.section + .section { border-top: 1px solid var(--border); }
.section h2 {
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.section .section-lead {
  color: var(--muted);
  max-width: 46rem;
  margin: 0 0 28px;
}
.kicker {
  color: var(--accent-2);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 10px;
}

.grid {
  display: grid;
  gap: 18px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.03) inset;
}
a.card { color: inherit; display: block; height: 100%; }
a.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  color: inherit;
}
.card h3 { margin: 0 0 8px; font-size: 1.2rem; }
.card p { margin: 0; color: var(--muted); }
.card .icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: rgba(59, 158, 255, 0.12);
  color: var(--accent);
  margin-bottom: 14px;
}
.card .meta-links {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.92rem;
}

.page-hero {
  padding: 40px 0 28px;
  background:
    radial-gradient(800px 280px at 90% 0%, rgba(59, 158, 255, 0.16), transparent 60%),
    var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}
.page-hero h1 {
  margin: 0 0 8px;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  letter-spacing: -0.03em;
}
.page-hero p { margin: 0; color: var(--muted); max-width: 44rem; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.chip {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 0.88rem;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }

.prose h2, .prose h3 { letter-spacing: -0.02em; }
.prose h2 { margin: 1.6em 0 0.5em; }
.prose h3 { margin: 1.3em 0 0.4em; }
.prose p, .prose li { color: #d5deeb; }
.prose ul { padding-left: 1.2rem; }
.prose li { margin: 0.35em 0; }
.prose .muted, .muted { color: var(--muted); }

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.feature-list li {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  color: #d5deeb;
}
.feature-list i {
  color: var(--accent-2);
  width: 1.2em;
  margin-top: 4px;
  flex-shrink: 0;
}

.release-list { list-style: none; margin: 0; padding: 0; }
.release-list li { padding: 6px 0; border-bottom: 1px solid var(--border); }
.release-list li:last-child { border-bottom: 0; }

.logo-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}
.logo-tile {
  background: #f3f6fb;
  border-radius: 12px;
  min-height: 88px;
  display: grid;
  place-items: center;
  padding: 10px;
}
.logo-tile img { max-height: 56px; max-width: 120px; }
.logo-tile span { color: #243049; font-weight: 600; text-align: center; }

.data-table-wrap { overflow-x: auto; }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
table.data th, table.data td {
  text-align: left;
  vertical-align: top;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}
table.data th {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
table.data tbody tr:hover { background: rgba(59, 158, 255, 0.06); }

.site-footer {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  padding: 36px 0 28px;
  margin-top: auto;
  color: var(--muted);
  font-size: 0.92rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 28px;
}
.site-footer h2 {
  color: var(--text);
  font-size: 0.95rem;
  margin: 0 0 10px;
}
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 6px 0; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--accent); }
.footer-copy { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--border); }

/* Docs viewer */
.docs-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  min-height: calc(100vh - 220px);
  width: min(1280px, calc(100% - 32px));
  margin: 24px auto 48px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.docs-sidebar {
  background: var(--bg-elevated);
  border-right: 1px solid var(--border);
  padding: 18px 14px;
  overflow: auto;
}
.docs-sidebar h2 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 16px 0 8px;
}
.docs-sidebar h2:first-child { margin-top: 0; }
.space-list, .page-tree { list-style: none; margin: 0; padding: 0; }
.space-list a, .page-tree a, .docs-all-link {
  display: block;
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--text);
}
.space-list a.is-active, .page-tree a.is-active {
  background: rgba(59, 158, 255, 0.14);
  color: var(--accent);
}
.space-list a:hover, .page-tree a:hover, .docs-all-link:hover {
  background: var(--surface-2);
  color: var(--accent);
}
.docs-main { padding: 28px 32px 40px; min-width: 0; background: var(--bg); }
.docs-crumb { color: var(--muted); font-size: 0.88rem; margin-bottom: 16px; }
.docs-crumb a { color: var(--muted); }
.docs-crumb a:hover { color: var(--accent); }
.md-body h1 { margin-top: 0; font-size: 2rem; letter-spacing: -0.03em; }
.md-body h2 { margin-top: 1.6em; border-bottom: 1px solid var(--border); padding-bottom: 6px; }
.md-body ul, .md-body ol { padding-left: 1.4em; }
.md-body li { margin: 0.15em 0; }
.md-body pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  overflow-x: auto;
}
.md-body code {
  font-size: 0.9em;
  background: rgba(59, 158, 255, 0.08);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}
.md-body pre code { background: transparent; padding: 0; }
.md-body table { width: 100%; border-collapse: collapse; margin: 1em 0; }
.md-body th, .md-body td { border: 1px solid var(--border); padding: 6px 10px; }
.md-body blockquote {
  border-left: 3px solid var(--accent);
  margin: 1em 0;
  padding: 0.2em 1em;
  color: var(--muted);
}
.md-body img { border-radius: 8px; border: 1px solid var(--border); background: var(--surface); }
.md-body img[src*=".svg"] {
  background: var(--diagram-bg);
  padding: 10px;
}
.docs-toc {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px 14px;
  margin: 0 0 1.6em;
}
.docs-toc-title {
  margin: 0 0 8px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.docs-toc-list { list-style: none; margin: 0; padding: 0; }
.docs-toc-list a { color: var(--text); }
.docs-toc-list a:hover { color: var(--accent); }
.docs-toc-l1 { font-weight: 600; }
.docs-toc-l3 { padding-left: 14px; }
.docs-toc-l4 { padding-left: 28px; }
.docs-toc-l5 { padding-left: 42px; }
.docs-toc-l6 { padding-left: 56px; }
.docs-empty, .docs-error {
  color: var(--muted);
  text-align: center;
  padding: 64px 16px;
}
.docs-error { color: var(--danger); }
.docs-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}
.docs-mobile-toggle { display: none; }

.not-found {
  text-align: center;
  padding: 80px 16px;
}
.not-found h1 { font-size: 2.4rem; margin-bottom: 8px; }

@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
  .logo-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar { display: none; }
  .docs-sidebar.is-open { display: block; }
  .docs-mobile-toggle { display: inline-flex; }
}
@media (max-width: 720px) {
  .page-hero .grid-2, .section .grid-2 .grid-2 { grid-template-columns: 1fr; }

  .nav-toggle { display: inline-grid; place-items: center; }
  .nav-list {
    display: none;
    position: absolute;
    left: 0; right: 0;
    top: 100%;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
  }
  .site-nav.is-open .nav-list { display: flex; }
  .dropdown {
    position: static;
    display: none;
    box-shadow: none;
    border: 0;
    background: transparent;
    padding: 0 0 8px 12px;
  }
  .site-nav.is-open .dropdown { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .logo-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .util-bar-inner { justify-content: center; text-align: center; }
  .docs-main { padding: 20px 16px 32px; }
  table.data thead { display: none; }
  table.data tr { display: block; padding: 12px 0; }
  table.data td {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 8px;
    border: 0;
    padding: 4px 0;
  }
  table.data td::before {
    content: attr(data-label);
    color: var(--muted);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 700;
  }
}