/* TicketIQ docs. The Factory palette: ink black, off-white ground, one orange signal.
   Self-contained: no external fonts or scripts. */
:root {
  color-scheme: light;
  --bg: #f3f3f0; --bg-2: #ebebe6; --paper: #fbfbf9;
  --ink: #111111; --ink-2: #3b3b38; --mute: #66665f;  /* 5.2:1 on --bg (WCAG AA) */
  --line: #d6d6cf; --line-2: #c4c4bb;
  --signal: #ff5b1f; --signal-ink: #c2410c; --signal-soft: rgba(255, 91, 31, .10);
  --ok: #1f9d55; --warn: #c77700; --crit: #c0392b;
  --code-bg: #111111; --code-fg: #f3f3f0;
  --sans: "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --top: 60px;
}
/* Light by default, as the site and the console are: dark only when the
   reader picks it with the theme button (kept in localStorage). Following
   the OS setting opened the docs dark on every dark-mode machine. */
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e0e0d; --bg-2: #161614; --paper: #131312;
  --ink: #f1f1ec; --ink-2: #c9c9c1; --mute: #8d8d85;
  --line: #2a2a27; --line-2: #3a3a36;
  --signal-ink: #ff7a45; --signal-soft: rgba(255, 91, 31, .14);
  --code-bg: #0a0a09; --code-fg: #ecece6;
}
* { box-sizing: border-box; }
html { scroll-padding-top: calc(var(--top) + 16px); }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--signal-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; z-index: 99; background: var(--paper); padding: 6px 10px; }

/* Layout: sidebar | page (top bar, content + TOC, footer) */
.shell { display: grid; grid-template-columns: 284px minmax(0, 1fr); min-height: 100vh; }
.nav-collapsed .shell { grid-template-columns: 0 minmax(0, 1fr); }
.nav-collapsed .sidenav { visibility: hidden; }
.sidenav { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; gap: 12px; padding: 18px 14px 12px;
  border-right: 1px solid var(--line); background: var(--paper); font-size: 14px; overflow: hidden; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); padding: 2px 6px; font-size: 15px; }
.brand:hover { text-decoration: none; }
.brand b { font-weight: 700; }
.spark { width: 24px; height: 24px; color: var(--ink); flex: none; }
.search { position: relative; }
.search input { width: 100%; height: 36px; padding: 0 34px 0 12px; border: 1px solid var(--line); border-radius: 6px;
  background: var(--bg); color: var(--ink); font: inherit; }
.search input:focus { outline: 2px solid var(--signal); outline-offset: -1px; }
.search kbd { position: absolute; right: 8px; top: 8px; font: 11px var(--mono); color: var(--mute);
  border: 1px solid var(--line); border-radius: 4px; padding: 1px 5px; }
.search-results { position: absolute; z-index: 30; top: 42px; left: 0; width: min(520px, 86vw); max-height: 70vh; overflow: auto; background: var(--paper);
  border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 12px 32px rgba(0,0,0,.18); padding: 6px; }
.search-results a { display: block; padding: 8px 10px; border-radius: 6px; color: var(--ink); }
.search-results a:hover, .search-results a.sel { background: var(--signal-soft); text-decoration: none; }
.search-results .sr-sec { font: 11px var(--mono); color: var(--mute); text-transform: uppercase; letter-spacing: .08em; }
.search-results .sr-title { font-weight: 600; }
.search-results .sr-snip { font-size: 13px; color: var(--ink-2); }
.search-results mark { background: var(--signal-soft); color: var(--signal-ink); }
.search-results .sr-none { padding: 10px; color: var(--mute); }
.product-switch { position: relative; }
.product-switch summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: 12px 1fr 10px; column-gap: 8px; align-items: center;
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; background: var(--bg); }
.product-switch summary::-webkit-details-marker { display: none; }
.product-switch summary::after { content: ""; width: 6px; height: 6px; border-right: 1.5px solid var(--mute); border-bottom: 1.5px solid var(--mute); transform: rotate(45deg); grid-column: 3; grid-row: 1 / span 2; }
.ps-dot { width: 10px; height: 10px; border-radius: 3px; background: var(--signal); grid-row: 1 / span 2; }
.ps-name { font-weight: 700; } .ps-sub { grid-column: 2; font-size: 12px; color: var(--mute); }
.ps-menu { position: absolute; z-index: 30; top: calc(100% + 4px); left: 0; right: 0; background: var(--paper); border: 1px solid var(--line); border-radius: 8px; padding: 6px; box-shadow: 0 12px 28px rgba(0,0,0,.16); }
.ps-item { display: flex; align-items: center; gap: 8px; padding: 7px 8px; border-radius: 6px; color: var(--ink); font-size: 14px; }
a.ps-item:hover { background: var(--bg-2); text-decoration: none; }
.ps-item.soon { color: var(--mute); opacity: .6; cursor: not-allowed; }
.ps-tag { margin-left: auto; font: 10px var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--mute); }
.ps-console { border-top: 1px solid var(--line); margin-top: 4px; padding-top: 9px; color: var(--signal-ink); }
.nav-scroll { flex: 1; overflow: auto; margin: 0 -6px; padding: 0 6px; }
.nav-tree, .nav-tree ul { list-style: none; margin: 0; padding: 0; }
.nav-tree a { display: flex; align-items: center; gap: 6px; padding: 5px 10px; border-radius: 6px; color: var(--ink-2); }
.nav-tree a:hover { background: var(--bg-2); text-decoration: none; }
.nav-tree a.active { color: var(--ink); background: var(--signal-soft); box-shadow: inset 2px 0 0 var(--signal); font-weight: 600; }
.nav-tree .nav-top, .nav-tree .nav-sec-link { font-weight: 600; color: var(--ink); }
.nav-sec-head { display: flex; align-items: center; }
.nav-sec-link { flex: 1; }
.nav-sec-btn { background: none; border: 0; cursor: pointer; width: 28px; height: 28px; display: grid; place-items: center; color: var(--mute); border-radius: 6px; }
.nav-sec-btn:hover { background: var(--bg-2); color: var(--ink); }
.chev { width: 7px; height: 7px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(-45deg); transition: transform .15s; }
.nav-sec > ul { display: none; padding-left: 12px; margin-left: 10px; border-left: 1px solid var(--line); }
.nav-sec.open > ul { display: block; }
.nav-sec.open .chev { transform: rotate(45deg); }
.side-foot { display: flex; gap: 8px; border-top: 1px solid var(--line); padding-top: 10px; }
.side-foot .theme-btn { flex: 1; width: auto; justify-content: flex-start; display: flex; gap: 8px; padding: 0 10px; font: 13px var(--sans); }
.badge-preview { display: inline-block; font: 600 10px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--signal-ink);
  border: 1px solid var(--signal); border-radius: 999px; padding: 3px 6px; margin-left: 6px; vertical-align: middle; }

.page { min-width: 0; display: flex; flex-direction: column; }
.topbar { position: sticky; top: 0; z-index: 20; height: var(--top); display: flex; align-items: center; gap: 14px;
  padding: 0 28px; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; font-size: 13px; color: var(--mute); }
.crumbs li + li::before { content: "›"; margin-right: 6px; color: var(--line-2); }
.crumbs a { color: var(--mute); }
.crumbs li[aria-current] { color: var(--ink); }
.top-links { display: flex; align-items: center; gap: 16px; margin-left: auto; }
.top-links a { color: var(--ink-2); font-size: 14px; }
.top-links a.console { color: var(--paper); background: var(--ink); padding: 6px 12px; border-radius: 6px; font-weight: 600; }
.top-links a.console:hover { text-decoration: none; opacity: .9; }
.theme-btn, .menu-btn, .collapse-btn, .expand-btn { background: none; border: 1px solid var(--line); border-radius: 6px; width: 34px; height: 34px;
  display: grid; place-items: center; cursor: pointer; color: var(--ink); }
.theme-btn svg, .collapse-btn svg, .expand-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.theme-btn .moon { display: none; }
:root[data-theme="dark"] .theme-btn .sun { display: none; }
:root[data-theme="dark"] .theme-btn .moon { display: inline; }
.menu-btn, .expand-btn { display: none; }
.nav-collapsed .expand-btn { display: grid; }
.menu-btn span, .menu-btn span::before, .menu-btn span::after { display: block; width: 16px; height: 2px; background: currentColor; position: relative; content: ""; }
.menu-btn span::before { position: absolute; top: -5px; } .menu-btn span::after { position: absolute; top: 5px; }
.content-grid { display: grid; grid-template-columns: minmax(0, 1fr) 236px; flex: 1; max-width: 1240px; width: 100%; }

.main { min-width: 0; padding: 26px 48px 60px; }
.pagebar { display: flex; justify-content: space-between; align-items: center; max-width: 780px; margin-bottom: 14px; }
.product-badge { font: 700 11px/1 var(--mono); letter-spacing: .14em; color: #111; background: var(--signal); padding: 5px 8px; border-radius: 4px; }
.page-options { position: relative; }
.po-btn { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; font: 13px var(--sans); color: var(--ink-2); border: 1px solid var(--line); border-radius: 6px; padding: 5px 10px; background: var(--paper); }
.po-btn:hover, .po-btn[aria-expanded="true"] { border-color: var(--ink); color: var(--ink); }
.po-dots { letter-spacing: .05em; }
.po-menu { position: absolute; right: 0; top: calc(100% + 4px); z-index: 25; min-width: 240px; max-width: calc(100vw - 32px); background: var(--paper); border: 1px solid var(--line); border-radius: 8px; padding: 6px; box-shadow: 0 12px 28px rgba(0,0,0,.16); }
.po-menu[hidden] { display: none; }
.po-menu a, .po-menu button { display: block; width: 100%; text-align: left; padding: 7px 10px; border-radius: 6px; color: var(--ink); font: 14px var(--sans); background: none; border: 0; cursor: pointer; }
.po-menu a:hover, .po-menu button:hover, .po-menu a:focus, .po-menu button:focus { background: var(--bg-2); text-decoration: none; }
.po-menu a[target="_blank"]::after { content: " ↗"; color: var(--mute); }
.po-sep { height: 1px; margin: 5px 4px; background: var(--line); }
.po-fallback { display: block; width: 100%; max-width: 780px; height: 160px; margin: 0 0 14px; padding: 10px; border: 1px solid var(--line-2); border-radius: 8px; background: var(--paper); color: var(--ink); font: 12px/1.5 var(--mono); }
.outcomes { border: 1px solid var(--line); border-radius: 8px; background: var(--paper); padding: 14px 18px; margin: 0 0 24px; max-width: 780px; }
.outcomes-title { font-weight: 700; margin-bottom: 6px; }
.outcomes ul { list-style: none; margin: 0; padding: 0; }
.outcomes li { position: relative; padding: 3px 0 3px 26px; color: var(--ink-2); }
.outcomes li::before { content: ""; position: absolute; left: 2px; top: 8px; width: 12px; height: 7px; border-left: 2px solid var(--signal); border-bottom: 2px solid var(--signal); transform: rotate(-45deg); }
.child-list { list-style: none; padding: 0; margin: 10px 0; border-top: 1px solid var(--line); }
.child-list li { padding: 12px 0; border-bottom: 1px solid var(--line); }
.child-list a { font-weight: 600; font-size: 16px; }
.child-list p { margin: 2px 0 0; font-size: 14px; }
.helpful { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ink-2); }
.helpful button { background: var(--paper); border: 1px solid var(--line); border-radius: 6px; padding: 3px 8px; cursor: pointer; font-size: 14px; }
.helpful button:hover, .helpful button[aria-pressed="true"] { border-color: var(--signal); background: var(--signal-soft); }
.toc .helpful { margin-top: 22px; padding-top: 14px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.feedback-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; max-width: 780px; margin-top: 40px; padding: 14px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: 13px; }
.feedback-row a { color: var(--ink-2); }
.feedback-row .to-top { margin-left: auto; }
.site-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; padding: 22px 48px; border-top: 1px solid var(--line); background: var(--paper); font-size: 13px; color: var(--mute); }
.sf-brand { display: flex; align-items: center; gap: 8px; font: 700 12px var(--mono); letter-spacing: .14em; color: var(--ink); }
.sf-brand .spark { width: 20px; height: 20px; }
.sf-social { display: flex; gap: 12px; }
.sf-social svg { width: 18px; height: 18px; fill: var(--ink-2); }
.sf-social a:hover svg { fill: var(--signal); }
.sf-legal { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-left: auto; }
.sf-legal a { color: var(--mute); }
.diagram { margin: 18px 0; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); padding: 14px; overflow-x: auto; }
.diagram svg { display: block; width: 100%; min-width: 560px; height: auto; }
.diagram .d-box { fill: var(--bg); stroke: var(--line-2); }
.diagram .d-hot { fill: var(--signal-soft); stroke: var(--signal); }
.diagram text { fill: var(--ink); font: 13px var(--sans); }
.diagram .d-sub { fill: var(--mute); font: 11px var(--mono); }
.diagram .d-line { stroke: var(--ink-2); stroke-width: 1.5; fill: none; }
.diagram .d-arrow { fill: var(--ink-2); }
.doc { max-width: 780px; }
.doc-head h1 { font-size: 34px; line-height: 1.15; letter-spacing: -.02em; margin: 0 0 10px; }
.lede { font-size: 17px; color: var(--ink-2); margin: 0 0 26px; }
.prose h2 { font-size: 23px; margin: 38px 0 12px; padding-top: 6px; letter-spacing: -.01em; }
.prose h3 { font-size: 18px; margin: 28px 0 8px; }
.prose h4 { font-size: 15px; margin: 22px 0 6px; }
.prose .anchor { opacity: 0; margin-left: 8px; color: var(--mute); font-weight: 400; }
.prose h2:hover .anchor, .prose h3:hover .anchor { opacity: 1; }
.prose p, .prose li { color: var(--ink-2); }
.prose strong { color: var(--ink); }
.prose ol, .prose ul { padding-left: 24px; }
.prose ol > li { margin: 8px 0; padding-left: 4px; }
.prose ol > li::marker { font: 600 13px var(--mono); color: var(--signal-ink); }
.prose code { font: 13px var(--mono); background: var(--bg-2); border: 1px solid var(--line); border-radius: 4px; padding: 1px 5px; }
.code { position: relative; margin: 14px 0; }
.code pre { margin: 0; background: var(--code-bg); color: var(--code-fg); border-radius: 8px; padding: 16px 18px; overflow: auto; font: 13px/1.6 var(--mono); }
.code pre code { background: none; border: 0; padding: 0; color: inherit; }
.code .copy { position: absolute; top: 8px; right: 8px; font: 11px var(--mono); background: #2a2a27; color: #ddd; border: 0; border-radius: 4px; padding: 4px 8px; cursor: pointer; opacity: 0; }
.code:hover .copy, .code .copy:focus { opacity: 1; }
.table-wrap { overflow-x: auto; margin: 14px 0; border: 1px solid var(--line); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--bg-2); font: 600 12px var(--mono); text-transform: uppercase; letter-spacing: .05em; color: var(--ink-2); }
tr:last-child td { border-bottom: 0; }
td code { white-space: nowrap; }
hr { border: 0; border-top: 1px solid var(--line); margin: 30px 0; }
blockquote { margin: 14px 0; padding: 4px 16px; border-left: 3px solid var(--line-2); color: var(--ink-2); }
.callout { margin: 18px 0; padding: 12px 16px; border: 1px solid var(--line); border-left: 4px solid var(--ink-2); border-radius: 6px; background: var(--paper); }
.callout p { margin: 4px 0; }
.callout-title { font: 700 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; margin-bottom: 2px; }
.callout-note { border-left-color: #3b82f6; } .callout-note .callout-title { color: #3b82f6; }
.callout-tip { border-left-color: var(--ok); } .callout-tip .callout-title { color: var(--ok); }
.callout-warning { border-left-color: var(--signal); background: var(--signal-soft); } .callout-warning .callout-title { color: var(--signal-ink); }
.callout-preview { border-left-color: var(--signal); } .callout-preview .callout-title { color: var(--signal-ink); }

.prevnext { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; max-width: 780px; margin-top: 22px; }
.prevnext a { display: block; border: 1px solid var(--line); border-radius: 8px; padding: 12px 16px; color: var(--ink); background: var(--paper); font-weight: 600; }
.prevnext a:hover { border-color: var(--signal); text-decoration: none; }
.prevnext span { display: block; font: 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--mute); font-weight: 400; }
.prevnext .next { text-align: right; }

.toc { position: sticky; top: var(--top); align-self: start; max-height: calc(100vh - var(--top)); overflow: auto; padding: 28px 18px; font-size: 13px; }
.toc-title { font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .1em; color: var(--mute); margin-bottom: 8px; }
.toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.toc li a { display: block; padding: 4px 0 4px 12px; color: var(--ink-2); margin-left: -1px; border-left: 2px solid transparent; }
.toc li.lvl3 a { padding-left: 24px; }
.toc li a.active { color: var(--ink); border-left-color: var(--signal); }

/* Home */
.layout-home .toc, .layout-labs .toc { display: none; }
.layout-home .content-grid, .layout-labs .content-grid { grid-template-columns: minmax(0, 1fr); }
.layout-home .doc { max-width: 1060px; }
.hero { padding: 16px 0 12px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font: 600 12px var(--mono); letter-spacing: .14em; color: var(--ink-2); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 4px var(--signal-soft); }
.hero h1, .labs-hero h1 { font-size: 44px; line-height: 1.08; letter-spacing: -.03em; margin: 14px 0 12px; color: var(--ink); max-width: 820px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; margin: 18px 0 8px; }
.card { display: block; border: 1px solid var(--line); border-radius: 10px; padding: 18px; background: var(--paper); color: var(--ink); transition: border-color .15s, transform .15s; }
.card:hover { border-color: var(--signal); text-decoration: none; transform: translateY(-1px); }
.card .k { font: 600 11px var(--mono); letter-spacing: .1em; color: var(--signal-ink); text-transform: uppercase; }
.card h3 { margin: 8px 0 6px; font-size: 17px; color: var(--ink); }
.card p { margin: 0; font-size: 14px; color: var(--ink-2); }
.pill-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 18px 0; }
.btn-orange, .btn-ink { display: inline-block; padding: 10px 18px; border-radius: 6px; font-weight: 600; font-size: 14px; }
.btn-orange { background: var(--signal); color: #111; }
.btn-ink { background: var(--ink); color: var(--paper); }
.btn-orange:hover, .btn-ink:hover { text-decoration: none; opacity: .92; }

/* Ask Liya: the hero box and its suggestions (liya-chat.js answers) */
.ask-liya { display: flex; align-items: center; gap: 10px; max-width: 640px; margin: 22px 0 10px; padding: 6px 6px 6px 14px;
  border: 1.5px solid var(--ink); border-radius: 12px; background: var(--paper); }
.ask-liya:focus-within { outline: 2px solid var(--signal); outline-offset: 2px; }
.ask-liya svg { flex: none; width: 20px; height: 20px; color: var(--ink); }
.ask-liya input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--ink); font: 16px var(--sans); padding: 8px 0; }
.ask-liya input::placeholder { color: var(--mute); }
.ask-liya button { flex: none; padding: 9px 16px; border: 0; border-radius: 8px; background: var(--ink); color: var(--paper); font: 600 14px var(--sans); cursor: pointer; }
.ask-liya button:focus-visible, .ask-try button:focus-visible, .ask-ai:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }
.ask-try { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0 0 8px; font-size: 13px; color: var(--mute); }
.ask-try span { font: 600 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.ask-try button { padding: 6px 11px; border: 1px solid var(--line-2); border-radius: 999px; background: var(--paper); color: var(--ink); font: 13px var(--sans); cursor: pointer; }
.ask-try button:hover { border-color: var(--ink); }
/* The header's Ask Liya: the accent pill that opens the docs drawer. */
.ask-ai { display: inline-flex; align-items: center; gap: 7px; height: 34px; padding: 0 14px; border: 1px solid var(--signal); border-radius: 999px;
  background: var(--signal-soft); color: var(--signal-ink); font: 600 13px var(--sans); cursor: pointer; white-space: nowrap; }
.ask-ai:hover { background: var(--signal); color: #111; }
.ask-ai svg { width: 16px; height: 16px; }

/* Labs */
.layout-labs .main { padding-top: 22px; }
.layout-labs .doc { max-width: none; }
.labs-hero { padding: 26px 30px; border: 1px solid var(--line); border-radius: 12px; background:
  radial-gradient(circle at 92% 10%, var(--signal-soft), transparent 45%), var(--paper); }
.labs-hero .lede { max-width: 720px; }
.stats { display: flex; gap: 36px; }
.stats strong { display: block; font: 700 32px/1 var(--mono); color: var(--ink); }
.stats span { font: 12px var(--mono); color: var(--mute); text-transform: uppercase; letter-spacing: .1em; }
.labs-body { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 26px; margin-top: 24px; }
.labs-filters { align-self: start; position: sticky; top: calc(var(--top) + 16px); }
.f-group { border: 0; padding: 0; margin: 0 0 18px; }
.f-group legend { font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mute); margin-bottom: 6px; }
.f-row { display: flex; align-items: center; gap: 8px; padding: 4px 0; font-size: 14px; color: var(--ink-2); cursor: pointer; }
.f-row input { accent-color: var(--signal); }
.f-count { margin-left: auto; font: 12px var(--mono); color: var(--mute); background: var(--bg-2); border-radius: 999px; padding: 0 8px; }
.f-clear { background: none; border: 0; color: var(--signal-ink); cursor: pointer; padding: 0; font: inherit; font-size: 13px; }
.labs-toolbar { display: flex; gap: 12px; align-items: center; }
.labs-toolbar input { flex: 1; height: 38px; padding: 0 12px; border: 1px solid var(--line); border-radius: 6px; background: var(--paper); color: var(--ink); font: inherit; }
.view-toggle { display: flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.view-toggle button { background: var(--paper); color: var(--ink-2); border: 0; padding: 8px 12px; cursor: pointer; font: 13px var(--sans); }
.view-toggle button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.labs-count { font: 12px var(--mono); color: var(--mute); margin: 12px 0; }
.lab-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.lab-grid.list { grid-template-columns: 1fr; }
.lab-card { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; background: var(--paper); color: var(--ink); transition: border-color .15s, transform .15s; }
.lab-card:hover { border-color: var(--signal); text-decoration: none; transform: translateY(-1px); }
.lab-card h3 { font-size: 16px; margin: 6px 0; }
.lab-card p { margin: 0 0 12px; font-size: 14px; color: var(--ink-2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.lab-meta { font: 11px var(--mono); color: var(--mute); text-transform: uppercase; letter-spacing: .08em; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.chip { font: 11px var(--mono); padding: 2px 8px; border-radius: 999px; background: var(--bg-2); color: var(--ink-2); border: 1px solid var(--line); }
.lab-grid.list .lab-card { flex-direction: row; flex-wrap: wrap; align-items: baseline; gap: 4px 16px; }
.lab-grid.list .lab-card h3 { margin: 0; }
.lab-grid.list .lab-card p { flex-basis: 100%; margin: 0; }
.lab-grid.list .chips { margin-top: 6px; }
.labs-empty { color: var(--mute); }
.labs-band { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-top: 40px; padding: 26px 30px; border-radius: 12px; background: var(--ink); color: var(--bg); }
.labs-band h2 { margin: 0 0 6px; font-size: 22px; color: var(--bg); }
.labs-band p { margin: 0; color: var(--line-2); }
.labs-band code { color: var(--signal); font: 13px var(--mono); }
.lab-facts { display: flex; flex-wrap: wrap; gap: 8px; margin: -10px 0 24px; }
.lab-facts > span:not(.chip) { font: 12px var(--mono); color: var(--ink-2); border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; }

@media (max-width: 1180px) {
  .content-grid { grid-template-columns: minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 860px) {
  .shell, .nav-collapsed .shell { grid-template-columns: 1fr; }
  .nav-collapsed .sidenav { visibility: visible; }
  .menu-btn { display: grid; }
  .expand-btn, .nav-collapsed .expand-btn, .collapse-btn { display: none; }
  .sidenav { position: fixed; top: 0; left: 0; bottom: 0; width: 290px; z-index: 40; transform: translateX(-100%); transition: transform .2s; }
  body.nav-open .sidenav { transform: none; box-shadow: 0 0 40px rgba(0,0,0,.3); }
  .topbar { padding: 0 16px; }
  .topbar .crumbs { display: none; }
  .main { padding: 20px 16px 50px; }
  .site-foot { padding: 20px 16px; }
  .sf-legal { margin-left: 0; }
  .top-links a:not(.console) { display: none; }
  .hero h1, .labs-hero h1 { font-size: 32px; }
  .labs-body { grid-template-columns: 1fr; }
  .labs-filters { position: static; display: flex; gap: 24px; flex-wrap: wrap; }
  .labs-band, .help-band { flex-direction: column; align-items: flex-start; }
  .prevnext, .path-cards { grid-template-columns: 1fr; }
}

/* Home additions */
.path-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 22px 0 34px; }
.path-card { display: block; border: 1px solid var(--line); border-radius: 12px; padding: 22px 24px; background: var(--paper); color: var(--ink); position: relative; overflow: hidden; }
.path-card::after { content: ""; position: absolute; right: -40px; top: -40px; width: 140px; height: 140px; border-radius: 50%; background: var(--signal-soft); }
.path-card:hover { border-color: var(--signal); text-decoration: none; }
.path-card .k { font: 600 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--mute); }
.path-card h3 { font-size: 21px; margin: 8px 0 6px; }
.path-card p { margin: 0 0 14px; color: var(--ink-2); font-size: 14px; }
.path-card .go { font-weight: 600; color: var(--signal-ink); }
.home-h2 { font-size: 20px; margin: 34px 0 4px; }
.cards.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 1000px) { .cards.three { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .cards.three { grid-template-columns: 1fr; } }
.newhere { margin: 30px 0; padding: 16px 20px; border: 1px solid var(--line); border-left: 4px solid var(--signal); border-radius: 8px; background: var(--paper); }
.newhere p { margin: 0; }
.help-band { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin: 30px 0 10px; padding: 24px 28px; border-radius: 12px; background: var(--ink); color: var(--bg); }
.help-band h2 { margin: 0 0 4px; font-size: 22px; color: var(--bg); }
.help-band p { margin: 0; color: var(--line-2); }
.help-band .btns { display: flex; gap: 10px; flex-wrap: wrap; }
.btn-ghost { display: inline-block; padding: 10px 18px; border-radius: 6px; font-weight: 600; font-size: 14px; border: 1px solid #555; color: #f3f3f0; }
.btn-ghost:hover { text-decoration: none; border-color: var(--signal); }

/* Accessibility: a heading for assistive tech only, and one visible focus
   ring for keyboard users on every link and control. */
.vh { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
a:focus-visible, button:focus-visible, summary:focus-visible, input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--ink); outline-offset: 2px; border-radius: 3px;
}
.skip:focus { outline: 2px solid var(--ink); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}
.page-footnote { margin: 32px 0 0; font-size: 12px; line-height: 1.5; color: var(--mute); }

/* Phones: iOS zooms into a field under 16px when it is tapped. */
@media (pointer: coarse) {
  input:not([type=checkbox]):not([type=radio]):not([type=range]), select, textarea { font-size: 16px !important; }
}