:root {
  color-scheme: dark;
  --bg: #090b0c;
  --panel: #101416;
  --panel-2: #151a1c;
  --line: #273034;
  --line-soft: #1b2225;
  --text: #f1f4ef;
  --muted: #96a29d;
  --mint: #8fffc1;
  --amber: #ffc66d;
  --topbar: 64px;
  --sidebar: 272px;
  --toc: 220px;
  --sans: "IBM Plex Sans", sans-serif;
  --serif: "Newsreader", serif;
  --mono: "IBM Plex Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 var(--sans); }
body::before { position: fixed; inset: 0; z-index: -1; content: ""; opacity: .18; background-image: linear-gradient(rgba(143,255,193,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(143,255,193,.08) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(to bottom, #000, transparent 70%); }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; clip: rect(0,0,0,0); overflow: hidden; white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 200; padding: 10px 14px; background: var(--mint); color: #07110b; transform: translateY(-150%); }
.skip-link:focus { transform: none; }

.topbar { position: fixed; inset: 0 0 auto; z-index: 100; height: var(--topbar); display: flex; align-items: center; justify-content: space-between; padding: 0 24px; border-bottom: 1px solid var(--line); background: rgba(9,11,12,.9); backdrop-filter: blur(18px); }
.topbar-left, .topbar-actions, .brand { display: flex; align-items: center; }
.brand { gap: 10px; font-weight: 600; letter-spacing: -.02em; }
.brand-mark { width: 26px; height: 26px; display: grid; grid-template-columns: repeat(3, 1fr); align-items: end; gap: 2px; padding: 5px; border: 1px solid var(--mint); }
.brand-mark i { display: block; background: var(--mint); height: 40%; }
.brand-mark i:nth-child(2) { height: 100%; }
.brand-mark i:nth-child(3) { height: 68%; }
.brand-area { color: var(--muted); font-weight: 400; }
.brand-area::before { content: "/"; margin-right: 10px; color: var(--line); }
.topbar-actions { gap: 8px; }
.topbar-link, .search-button { min-height: 40px; display: inline-flex; align-items: center; gap: 9px; padding: 0 12px; border: 1px solid transparent; background: transparent; color: var(--muted); cursor: pointer; }
.topbar-link:hover, .search-button:hover { color: var(--text); border-color: var(--line); }
.topbar-link-primary { color: #08110c; background: var(--mint); }
.search-button { width: 250px; justify-content: flex-start; border-color: var(--line); background: var(--panel); }
.search-button kbd { margin-left: auto; font: 11px var(--mono); color: var(--muted); }
.search-icon { width: 14px; height: 14px; border: 1.5px solid currentColor; border-radius: 50%; position: relative; flex: 0 0 auto; }
.search-icon::after { position: absolute; width: 6px; height: 1.5px; right: -5px; bottom: -2px; content: ""; background: currentColor; transform: rotate(45deg); }
.menu-button { display: none; width: 44px; height: 44px; padding: 12px; border: 0; background: transparent; cursor: pointer; }
.menu-button > span:not(.sr-only) { display: block; height: 1px; margin: 6px 0; background: currentColor; }

.docs-layout { min-height: 100vh; padding-top: var(--topbar); display: grid; grid-template-columns: var(--sidebar) minmax(0, 1fr) var(--toc); }
.sidebar { grid-column: 1; position: sticky; top: var(--topbar); height: calc(100vh - var(--topbar)); overflow-y: auto; padding: 24px 20px; border-right: 1px solid var(--line); background: rgba(10,13,14,.86); }
.sidebar-intro { display: grid; grid-template-columns: auto 1fr; column-gap: 8px; align-items: center; padding: 0 10px 18px; border-bottom: 1px solid var(--line-soft); color: var(--text); font: 12px var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.sidebar-intro small { grid-column: 2; color: var(--muted); text-transform: none; letter-spacing: 0; }
.status-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 12px rgba(143,255,193,.6); }
.nav-section { margin-top: 24px; }
.nav-section h2 { margin: 0 10px 7px; color: #63716b; font: 10px var(--mono); text-transform: uppercase; letter-spacing: .12em; }
.nav-section ul { list-style: none; padding: 0; margin: 0; }
.nav-section a { display: block; padding: 7px 10px; color: var(--muted); font-size: 14px; border-left: 1px solid transparent; }
.nav-section a:hover { color: var(--text); }
.nav-section a.active { color: var(--mint); border-left-color: var(--mint); background: linear-gradient(90deg, rgba(143,255,193,.08), transparent); }
.sidebar-foot { margin: 28px 10px 0; padding-top: 18px; border-top: 1px solid var(--line-soft); display: flex; flex-direction: column; font-size: 12px; color: var(--muted); }
.sidebar-foot a { color: var(--mint); }
.main { grid-column: 2; min-width: 0; }
.guide { max-width: 820px; margin: 0 auto; padding: 58px 50px 80px; }
.breadcrumb { display: flex; gap: 8px; color: var(--muted); font: 12px var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.breadcrumb a:hover { color: var(--mint); }
.guide-header { padding: 42px 0 34px; border-bottom: 1px solid var(--line); }
.guide-kicker { display: flex; gap: 16px; color: var(--mint); font: 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.guide-header h1, .api-intro h1, .not-found h1 { max-width: 700px; margin: 15px 0 14px; font: 600 clamp(42px, 6vw, 66px)/.98 var(--serif); letter-spacing: -.035em; }
.guide-header p { max-width: 650px; margin: 0; color: var(--muted); font-size: 19px; line-height: 1.55; }
.guide-body { padding-top: 22px; color: #ccd3cf; }
.guide-body h2 { margin: 50px 0 14px; color: var(--text); font: 600 31px/1.15 var(--serif); letter-spacing: -.02em; }
.guide-body h3 { margin: 34px 0 10px; color: var(--text); font-size: 18px; }
.guide-body .heading-anchor:hover { color: var(--mint); }
.guide-body p, .guide-body ul, .guide-body ol { margin: 0 0 20px; }
.guide-body li { margin-bottom: 7px; }
.guide-body strong { color: var(--text); }
.guide-body a { color: var(--mint); text-decoration: underline; text-underline-offset: 3px; }
.external-mark { margin-left: 3px; text-decoration: none; }
.guide-body blockquote { margin: 28px 0; padding: 18px 20px; border-left: 2px solid var(--mint); background: rgba(143,255,193,.055); color: var(--text); }
.guide-body blockquote p:last-child { margin-bottom: 0; }
.guide-body table { width: 100%; margin: 26px 0; border-collapse: collapse; font-size: 14px; }
.guide-body th { color: var(--text); text-align: left; font: 11px var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.guide-body th, .guide-body td { padding: 12px; border: 1px solid var(--line); vertical-align: top; }
.guide-body code:not(.hljs) { padding: 2px 5px; background: var(--panel-2); color: var(--amber); font: 13px var(--mono); }
.code-frame { margin: 26px 0; border: 1px solid var(--line); background: #070909; overflow: hidden; }
.code-bar { height: 38px; padding: 0 12px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); color: var(--muted); font: 10px var(--mono); text-transform: uppercase; }
.code-bar button { border: 0; background: transparent; color: var(--mint); cursor: pointer; }
.code-frame pre { margin: 0; padding: 18px; overflow-x: auto; }
.code-frame code { font: 13px/1.6 var(--mono); }
.hljs { color: #d6ded9; background: transparent; }
.hljs-string, .hljs-attr { color: var(--mint); }
.hljs-number, .hljs-literal { color: var(--amber); }
.hljs-keyword, .hljs-selector-tag { color: #80bfff; }
.page-navigation { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--line); }
.page-navigation a { display: flex; flex-direction: column; padding: 16px; border: 1px solid var(--line); }
.page-navigation a:last-child { text-align: right; }
.page-navigation a:hover { border-color: var(--mint); }
.page-navigation small { color: var(--muted); font: 10px var(--mono); text-transform: uppercase; }
.page-navigation strong { margin-top: 4px; }

.toc { grid-column: 3; position: sticky; top: var(--topbar); height: calc(100vh - var(--topbar)); padding: 46px 24px; border-left: 1px solid var(--line); overflow-y: auto; }
.toc > p { margin: 0 0 14px; color: #63716b; font: 10px var(--mono); text-transform: uppercase; letter-spacing: .1em; }
.toc ol { list-style: none; margin: 0; padding: 0; }
.toc li { margin: 9px 0; }
.toc li[data-level="3"] { padding-left: 12px; }
.toc a { color: var(--muted); font-size: 12px; line-height: 1.3; }
.toc a:hover, .toc a.active { color: var(--mint); }
.toc-support { display: block; margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--line); }
.site-footer { max-width: 1180px; margin: 60px auto 0; padding: 28px 36px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 30px; color: var(--muted); font-size: 13px; }
.site-footer div { display: flex; flex-direction: column; }
.site-footer strong { color: var(--text); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 20px; }
.site-footer a:hover { color: var(--mint); }

.home { grid-column: 2 / 4; }
.home-hero { min-height: 640px; display: grid; grid-template-columns: 1.2fr .8fr; gap: 7vw; align-items: center; padding: 76px clamp(40px, 7vw, 110px); border-bottom: 1px solid var(--line); }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--muted); font: 11px var(--mono); text-transform: uppercase; letter-spacing: .1em; }
.home-hero h1 { max-width: 750px; margin: 25px 0; font: 600 clamp(52px, 6vw, 92px)/.9 var(--serif); letter-spacing: -.055em; }
.home-hero h1 em { color: var(--mint); font-weight: 500; }
.hero-copy > p { max-width: 650px; color: var(--muted); font-size: 19px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 18px; padding: 0 17px; border: 1px solid var(--line); background: var(--panel); cursor: pointer; }
.button:hover { border-color: var(--mint); }
.button.primary { background: var(--mint); color: #07110b; border-color: var(--mint); }
.answer-flow { border: 1px solid var(--line); background: rgba(16,20,22,.9); box-shadow: 24px 24px 0 rgba(143,255,193,.025); }
.flow-head { display: flex; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--line); font: 10px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.flow-head small { color: var(--muted); text-transform: none; letter-spacing: 0; }
.answer-flow ol { list-style: none; margin: 0; padding: 10px 0; }
.answer-flow li { display: grid; grid-template-columns: 48px 1fr; align-items: center; padding: 12px 16px; color: var(--muted); }
.answer-flow li > span { font: 11px var(--mono); }
.answer-flow li div { display: flex; flex-direction: column; }
.answer-flow li strong { color: var(--text); font-size: 14px; }
.answer-flow li small { color: var(--muted); }
.answer-flow li[data-state="done"] > span { color: var(--mint); }
.answer-flow li[data-state="active"] { background: var(--mint); color: #07110b; }
.answer-flow li[data-state="active"] strong, .answer-flow li[data-state="active"] small { color: #07110b; }
.flow-proof { display: grid; grid-template-columns: auto 1fr; gap: 5px 14px; padding: 15px 16px; border-top: 1px solid var(--line); font: 10px var(--mono); }
.flow-proof span { color: var(--muted); text-transform: uppercase; }
.home-section { padding: 76px clamp(40px, 7vw, 110px); border-bottom: 1px solid var(--line); }
.section-heading { display: flex; justify-content: space-between; gap: 50px; margin-bottom: 34px; }
.section-heading > div { display: flex; align-items: baseline; gap: 16px; }
.section-heading span { color: var(--mint); font: 11px var(--mono); }
.section-heading h2 { margin: 0; font: 600 38px var(--serif); }
.section-heading p { max-width: 410px; margin: 0; color: var(--muted); }
.track-grid, .featured-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.track-card, .featured-card { position: relative; min-height: 230px; padding: 26px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(16,20,22,.65); transition: background .2s, transform .2s; }
.track-card:hover, .featured-card:hover { background: var(--panel-2); transform: translateY(-2px); }
.track-mark, .card-index { color: var(--mint); font: 11px var(--mono); }
.track-card h3, .featured-card h3 { margin: 44px 0 8px; font: 600 24px var(--serif); }
.track-card p, .featured-card p { color: var(--muted); }
.track-card strong { position: absolute; bottom: 24px; color: var(--mint); font-size: 13px; }
.featured-card { display: grid; grid-template-columns: 34px 1fr 20px; gap: 12px; }
.featured-card h3 { margin-top: 8px; }
.featured-card small { color: var(--muted); font: 10px var(--mono); text-transform: uppercase; }
.card-arrow { color: var(--mint); }
.home-callout { margin: 76px clamp(40px, 7vw, 110px); padding: 42px; display: flex; justify-content: space-between; align-items: end; gap: 40px; border: 1px solid var(--mint); background: linear-gradient(125deg, rgba(143,255,193,.1), transparent 60%); }
.home-callout small { color: var(--mint); font: 10px var(--mono); text-transform: uppercase; }
.home-callout h2 { margin: 8px 0; font: 600 38px var(--serif); }
.home-callout p { max-width: 650px; margin: 0; color: var(--muted); }
.callout-actions { min-width: 210px; display: flex; flex-direction: column; gap: 8px; }
.callout-actions a { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px solid var(--line); }

.search-dialog { width: min(680px, calc(100% - 30px)); max-height: min(700px, calc(100vh - 40px)); padding: 0; border: 1px solid var(--line); background: var(--panel); color: var(--text); box-shadow: 0 30px 100px #000; }
.search-dialog::backdrop { background: rgba(0,0,0,.72); backdrop-filter: blur(5px); }
.search-shell { margin: 0; }
.search-input-row { display: flex; align-items: center; gap: 14px; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.search-input-row input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--text); }
.search-close { border: 1px solid var(--line); background: transparent; color: var(--muted); font: 10px var(--mono); cursor: pointer; }
.search-results { max-height: 520px; overflow-y: auto; padding: 8px; }
.search-empty { padding: 30px; text-align: center; color: var(--muted); }
.search-result { display: block; padding: 14px; border: 1px solid transparent; }
.search-result:hover, .search-result:focus { border-color: var(--line); background: var(--panel-2); outline: 0; }
.search-result small { color: var(--mint); font: 10px var(--mono); text-transform: uppercase; }
.search-result strong { display: block; margin: 3px 0; }
.search-result span { color: var(--muted); font-size: 13px; }
.api-intro { padding: 50px; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; gap: 40px; }
.api-intro p { max-width: 700px; color: var(--muted); }
.api-intro nav { display: flex; flex-direction: column; gap: 8px; min-width: 180px; }
.api-intro nav a { color: var(--mint); }
.api-reference-shell { min-height: 900px; background: #0f1115; }
.not-found { min-height: 70vh; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; max-width: 800px; margin: auto; padding: 50px; }
.not-found > span { color: var(--mint); font: 12px var(--mono); }
.not-found p { color: var(--muted); }
.not-found div { display: flex; gap: 10px; margin-top: 20px; }

@media (max-width: 1120px) {
  .docs-layout { grid-template-columns: var(--sidebar) minmax(0, 1fr); }
  .toc { display: none; }
  .home { grid-column: 2; }
  .home-hero { grid-template-columns: 1fr; }
  .answer-flow { max-width: 600px; }
}
@media (max-width: 820px) {
  .topbar { padding: 0 14px 0 6px; }
  .menu-button { display: block; }
  .docs-layout { display: block; }
  .sidebar { position: fixed; z-index: 90; top: var(--topbar); left: 0; width: min(310px, 88vw); transform: translateX(-105%); transition: transform .2s ease; box-shadow: 20px 0 60px #000; }
  body.nav-open { overflow: hidden; }
  body.nav-open .sidebar { transform: none; }
  .nav-overlay { position: fixed; z-index: 80; inset: var(--topbar) 0 0; display: none; background: rgba(0,0,0,.65); }
  body.nav-open .nav-overlay { display: block; }
  .search-button { width: 44px; justify-content: center; }
  .search-button span:not(.search-icon), .search-button kbd { display: none; }
  .guide { padding: 44px 30px 70px; }
  .home-hero, .home-section { padding-left: 30px; padding-right: 30px; }
  .home-callout { margin-left: 30px; margin-right: 30px; }
}
@media (max-width: 600px) {
  .topbar-link { display: none; }
  .brand-name { max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .guide { padding: 34px 20px 60px; }
  .guide-header { padding-top: 30px; }
  .guide-header h1 { font-size: 44px; }
  .guide-body table { display: block; overflow-x: auto; }
  .page-navigation { grid-template-columns: 1fr; }
  .home-hero { min-height: auto; padding: 52px 20px; }
  .home-hero h1 { font-size: 54px; }
  .flow-head small { display: none; }
  .home-section { padding: 54px 20px; }
  .section-heading, .home-callout, .api-intro { flex-direction: column; align-items: flex-start; }
  .section-heading { gap: 12px; }
  .track-grid, .featured-grid { grid-template-columns: 1fr; }
  .home-callout { margin: 54px 20px; padding: 28px 22px; }
  .site-footer { margin-top: 30px; padding: 24px 20px; flex-direction: column; }
  .api-intro { padding: 34px 20px; }
  .not-found { padding: 30px 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}