:root {
  color-scheme: dark;
  --bg: #0a0e27;
  --bg-alt: #111735;
  --panel: rgba(14, 20, 48, 0.78);
  --panel-strong: rgba(16, 23, 55, 0.94);
  --ink: #e0e6f0;
  --muted: rgba(224, 230, 240, 0.68);
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(0, 212, 255, 0.34);
  --primary: #00ff9f;
  --secondary: #00d4ff;
  --accent: #ff006e;
  --code-bg: #050817;
  --code-ink: #eff7ff;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html {
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(rgba(0, 212, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 159, 0.028) 1px, transparent 1px),
    linear-gradient(135deg, var(--bg) 0%, #111735 56%, #0b102a 100%);
  background-size: 42px 42px, 42px 42px, auto;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a {
  color: var(--secondary);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

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

:focus-visible {
  outline: 2px solid rgba(0, 212, 255, 0.88);
  outline-offset: 2px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 12px clamp(18px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
  background: rgba(10, 14, 39, 0.86);
  backdrop-filter: blur(14px);
}

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

.brand-mark {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid rgba(0, 255, 159, 0.44);
  border-radius: 8px;
  background: rgba(0, 255, 159, 0.08);
  color: var(--primary);
  filter: drop-shadow(0 0 0.45rem rgba(0, 255, 159, 0.32));
}

.brand-mark svg {
  width: 22px;
  height: 22px;
}

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

.brand small {
  color: var(--muted);
  font-size: 0.77rem;
  line-height: 1.2;
}

.topnav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.topnav a {
  border: 1px solid transparent;
  border-radius: 999px;
  color: rgba(224, 230, 240, 0.82);
  font-size: 0.92rem;
  font-weight: 650;
  padding: 7px 11px;
  text-decoration: none;
}

.topnav a[aria-current="page"] {
  border-color: transparent;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--bg);
}

.topnav a:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.045);
  color: var(--ink);
}

.shell {
  display: grid;
  grid-template-columns: minmax(210px, 250px) minmax(0, 1040px) minmax(170px, 220px);
  gap: clamp(22px, 3vw, 40px);
  margin: 0 auto;
  max-width: 1640px;
  padding: 34px clamp(18px, 4vw, 48px) 54px;
}

.sidebar,
.toc {
  align-self: start;
  max-height: calc(100vh - 104px);
  overflow: auto;
  position: sticky;
  top: 96px;
}

.nav-group {
  margin-bottom: 24px;
}

.nav-group h2,
.toc h2 {
  margin: 0 0 10px;
  color: var(--primary);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav-item {
  margin-bottom: 2px;
}

.nav-group > .nav-item > a {
  display: block;
  border-left: 2px solid transparent;
  border-radius: 0 8px 8px 0;
  color: var(--ink);
  padding: 9px 10px 9px 12px;
  text-decoration: none;
}

.nav-group > .nav-item > a span,
.nav-group > .nav-item > a small {
  display: block;
}

.nav-group > .nav-item > a span {
  font-size: 0.94rem;
  font-weight: 700;
}

.nav-group > .nav-item > a small {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.35;
  margin-top: 1px;
}

.nav-group > .nav-item > a[aria-current="page"],
.nav-group > .nav-item > a:hover {
  border-left-color: var(--secondary);
  background: rgba(255, 255, 255, 0.04);
}

.nav-group > .nav-item > a[aria-current="page"] span,
.nav-group > .nav-item > a:hover span {
  color: var(--primary);
}

.nav-sections {
  list-style: none;
  margin: 4px 0 10px 0;
  padding: 0 0 0 16px;
}

.nav-sections li {
  margin: 0;
}

.nav-sections a {
  display: block;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(224, 230, 240, 0.68);
  font-size: 0.8rem;
  line-height: 1.3;
  padding: 5px 8px 5px 12px;
  text-decoration: none;
}

.nav-sections a:hover {
  border-left-color: var(--secondary);
  color: var(--primary);
}

.doc {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(160deg, rgba(10, 14, 39, 0.78), rgba(10, 14, 39, 0.42));
  box-shadow: var(--shadow);
  padding: clamp(20px, 3vw, 34px);
}

.page-kicker {
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.doc h1,
.doc h2,
.doc h3,
.doc h4 {
  line-height: 1.18;
  margin: 34px 0 14px;
  text-wrap: balance;
}

.doc h1 {
  font-size: clamp(2.25rem, 7vw, 4.55rem);
  letter-spacing: 0;
  margin-top: 0;
  max-width: 860px;
}

.doc h2 {
  border-top: 1px solid var(--line);
  font-size: clamp(1.45rem, 3vw, 2.05rem);
  padding-top: 28px;
}

.doc h3 {
  color: #f2f8ff;
  font-size: 1.18rem;
}

.doc h4 {
  color: rgba(224, 230, 240, 0.9);
  font-size: 1rem;
}

.doc p,
.doc li {
  color: rgba(224, 230, 240, 0.82);
  font-size: 1rem;
}

.doc > p:first-of-type {
  color: rgba(224, 230, 240, 0.88);
  font-size: clamp(1.08rem, 2vw, 1.22rem);
  max-width: 78ch;
}

.doc ul,
.doc ol {
  padding-left: 1.35rem;
}

.doc li + li {
  margin-top: 0.28rem;
}

.anchor {
  color: rgba(0, 212, 255, 0.42);
  margin-left: 0;
  opacity: 0;
  padding-right: 0.42em;
  text-decoration: none;
}

.doc h2:hover .anchor,
.doc h3:hover .anchor,
.doc h4:hover .anchor {
  opacity: 1;
}

.doc code {
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 6px;
  background: rgba(0, 212, 255, 0.08);
  color: #8df8ff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.88em;
  padding: 0.12em 0.34em;
  white-space: nowrap;
}

.doc pre {
  border: 1px solid rgba(0, 212, 255, 0.22);
  border-radius: 8px;
  background: var(--code-bg);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.3);
  margin: 22px 0;
  overflow: auto;
  padding: 18px;
}

.doc pre code {
  border: 0;
  background: transparent;
  color: var(--code-ink);
  display: block;
  font-size: 0.88rem;
  line-height: 1.6;
  padding: 0;
  white-space: pre;
}

.table-wrap {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  margin: 24px 0;
  overflow: auto;
}

.doc table {
  border-collapse: collapse;
  min-width: 760px;
  width: 100%;
}

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

.doc td {
  line-height: 1.45;
}

.doc th:first-child,
.doc td:first-child {
  width: 28%;
}

.doc td:first-child,
.doc td:first-child code {
  white-space: nowrap;
}

.doc td:last-child {
  min-width: 34ch;
}

.doc th {
  background: rgba(255, 255, 255, 0.055);
  color: var(--primary);
  font-size: 0.82rem;
  text-transform: uppercase;
}

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

.toc {
  border-left: 1px solid var(--line);
  color: var(--muted);
  padding-left: 18px;
}

.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc li {
  margin: 0 0 7px;
}

.toc a {
  color: var(--muted);
  display: block;
  font-size: 0.84rem;
  line-height: 1.35;
  text-decoration: none;
}

.toc a:hover {
  color: var(--primary);
}

.toc-3 {
  padding-left: 14px;
}

.toc-empty {
  color: var(--muted);
  font-size: 0.84rem;
  margin: 0;
}

.footer {
  border-top: 1px solid var(--line);
  margin: 0 auto;
  max-width: 1640px;
  padding: 18px clamp(18px, 4vw, 48px) 34px;
}

.footer p {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}

.footer code {
  color: var(--primary);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

@media (max-width: 1280px) {
  .shell {
    grid-template-columns: minmax(180px, 230px) minmax(0, 1fr);
  }

  .toc {
    display: none;
  }
}

@media (max-width: 820px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .topnav {
    justify-content: flex-start;
  }

  .shell {
    display: block;
    padding-top: 24px;
  }

  .sidebar {
    border-bottom: 1px solid var(--line);
    margin-bottom: 30px;
    max-height: none;
    overflow: visible;
    padding-bottom: 16px;
    position: static;
  }

  .nav-group > .nav-item > a small {
    display: none;
  }

  .doc {
    padding: 18px;
  }

  .doc h1 {
    font-size: clamp(2rem, 12vw, 3.3rem);
  }

  .anchor {
    margin-left: 0;
    opacity: 1;
  }
}