/* Sales-site Roboto variable fonts: latin and latin-ext, self-hosted. */
@font-face{font-family:Roboto;font-style:normal;font-weight:100 900;font-stretch:100%;font-display:swap;src:url(/assets/roboto-latin.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Roboto;font-style:normal;font-weight:100 900;font-stretch:100%;font-display:swap;src:url(/assets/roboto-latin-ext.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

@font-face {
  font-family: 'Funnel Sans';
  src: url('/assets/funnel-sans-extrabold.ttf') format('truetype');
  font-style: normal;
  font-weight: 800;
  font-display: swap;
}

:root {
  --om-orange: #ed5c2c;
  --om-text: #1b1d21;
  --om-muted: #5f6470;
  --om-light: #6b7280;
  --om-line: #e6e8ec;
  --om-warm: #fff1eb;
  --om-grey: #f6f7f9;
  --om-radius: 16px;
  /* HUB-109: the palette hides the page scrollbar while it is open; the reserved
     gutter keeps the page from jumping sideways on every open and close. */
  scrollbar-gutter: stable;
  color: var(--om-text);
  font: 16px/1.6 'Roboto',system-ui,sans-serif;
  background: #fff;
}

* { box-sizing: border-box; }
body { margin: 0; }
h1,h2,h3,h4 { line-height: 1.18; letter-spacing: -.025em; }
h1,h2,h3,.concept-brand { font-family: 'Funnel Sans',system-ui,sans-serif; font-weight: 800; }
h1 { font-size: 40px; margin: 0 0 20px; }
h2 { font-size: 24px; margin: 0 0 20px; }
h3 { font-size: 20px; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--om-orange); }
button,input,select,textarea,summary { font: inherit; }
button,summary { cursor: pointer; }
button { background: #fff; border: 1px solid var(--om-line); border-radius: 999px; padding: 8px 16px; color: inherit; }
button:hover { border-color: var(--om-orange); }
button:disabled { opacity: .6; cursor: wait; }
:focus-visible { outline: 3px solid var(--om-orange); outline-offset: 4px; }
img { max-width: 100%; height: auto; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.concept-icon { width: 20px; height: 20px; flex: 0 0 auto; }
.concept-skip { position: fixed; top: -100px; left: 20px; z-index: 100; background: white; padding: 12px; }
.concept-skip:focus { top: 10px; }

/* A floating sales-site card, inside the same 1280px frame as the content. */
.concept-header {
  min-height: 66px;
  max-width: 1280px;
  margin: 8px auto 0;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 12px 24px;
  border: 1px solid var(--om-line);
  border-radius: 16px;
  box-shadow: 0 2px 8px #1b1d2103;
  background: #fff;
  position: relative;
  z-index: 5;
}
.concept-brand { position: relative; display: inline-block; flex-shrink: 0; width: 160px; }
.concept-brand img { display: block; width: 160px; height: 31px; filter: brightness(0); }
/* Reuse the bundled white wordmark as a two-tone mask; classic keeps the original image. */
.concept-brand::after { content: ''; position: absolute; inset: 0 auto 0 0; width: 31px; background: var(--om-orange); mask: url('/assets/logo.png') left top / 160px 31px no-repeat; }
.concept-header-divider { flex: 0 0 auto; width: 1px; height: 22px; background: var(--om-line); }
.concept-header-label { font-size: 14px; font-weight: 500; color: var(--om-muted); white-space: nowrap; }
.locale-switcher { position: relative; }
.locale-switcher nav { position: absolute; top: calc(100% + 10px); right: 0; min-width: 170px; background: white; border: 1px solid var(--om-line); box-shadow: 0 12px 35px #23262a12; border-radius: 12px; padding: 14px; display: grid; gap: 8px; }
.concept-account-nav { display: flex; align-items: center; gap: 24px; margin-left: auto; font-size: 14px; font-weight: 500; }
.concept-back { display: inline-flex; align-items: center; gap: 8px; color: var(--om-muted); white-space: nowrap; }
.concept-back-icon { width: 16px; height: 16px; }
.concept-login { display: inline-flex; align-items: center; min-height: 40px; background: var(--om-orange); color: white; border-radius: 999px; padding: 8px 22px; white-space: nowrap; }
.concept-login:hover { color: white; background: #d94a14; }
.locale-switcher { font-size: 11px; }
.locale-switcher summary { color: var(--om-muted); }

.concept-layout { display: grid; grid-template-columns: 268px minmax(0,1fr); max-width: 1280px; margin: auto; gap: 48px; }
.concept-sidebar { min-width: 0; border-right: 1px solid var(--om-line); padding: 40px 32px 64px 0; }
/* The rail is as tall as its content: the page scrolls, the rail never scrolls inside itself. */
.concept-sidebar>details { padding: 0 1px 8px; }
.concept-sidebar>details>summary { display: none; }
.concept-navigation { position: relative; }
.portal-search,.concept-hero-box,.concept-search-page-box { position: relative; display: flex; align-items: center; border: 1px solid #dfe2e8; border-radius: 9px; height: 38px; padding: 0 12px; background: #fff; gap: 8px; }
.portal-search .concept-icon { width: 15px; height: 15px; color: var(--om-muted); }
.portal-search input,.concept-hero-box input,.concept-search-page-box input { flex: 1; width: 0; min-width: 0; background: transparent; color: var(--om-text); border: 0; font-size: 14px; padding: 3px 0; }
.portal-search input::placeholder,.concept-hero-box input::placeholder,.concept-search-page-box input::placeholder { color: var(--om-muted); opacity: 1; }
kbd { width: 44px; flex: 0 0 44px; text-align: center; font: 11px/1.4 'Roboto',system-ui,sans-serif; color: var(--om-muted); border: 1px solid var(--om-line); background: var(--om-grey); border-radius: 5px; padding: 1px 5px; white-space: nowrap; }

/* HUB-87 command palette. The dialog is the only search input on the page; every
   box above is a trigger that still submits to /search without JavaScript. */
.concept-search-open { overflow: hidden; }
.concept-search-overlay { position: fixed; inset: 0; background: #1b1d2173; z-index: 30; }
.concept-search-modal { position: fixed; left: 50%; top: 120px; transform: translateX(-50%); width: min(640px, calc(100vw - 32px)); max-height: calc(100vh - 160px); background: #fff; border-radius: var(--om-radius); box-shadow: 0 24px 60px #1b1d2140; z-index: 31; display: flex; flex-direction: column; overflow: hidden; text-align: left; }
.concept-search-box { flex: 0 0 56px; display: flex; align-items: center; gap: 12px; height: 56px; padding: 0 18px; border-bottom: 1px solid var(--om-line); }
.concept-search-box .concept-icon { color: var(--om-muted); }
.concept-search-box input { flex: 1; width: 0; min-width: 0; border: 0; background: transparent; color: var(--om-text); font-size: 16px; padding: 3px 0; caret-color: var(--om-orange); }
/* HUB-109: the dialog input is the whole 56px bar, so the global focus ring would
   frame it in orange; the caret is the focus cue here. Everything else keeps the ring. */
.concept-search-box input:focus-visible { outline: none; }
.concept-search-box input::placeholder { color: var(--om-muted); opacity: 1; }
/* The native type=search clear button, restyled as a round grey button. The glyph is
   drawn from gradients, not a data: URI: the portal CSP allows img-src 'self' only. */
.concept-search-box input::-webkit-search-cancel-button { -webkit-appearance: none; appearance: none; width: 24px; height: 24px; border-radius: 50%; cursor: pointer; background: linear-gradient(45deg,transparent calc(50% - 1.25px),var(--om-muted) calc(50% - 1.25px) calc(50% + 1.25px),transparent calc(50% + 1.25px)) no-repeat center / 12px 12px,linear-gradient(-45deg,transparent calc(50% - 1.25px),var(--om-muted) calc(50% - 1.25px) calc(50% + 1.25px),transparent calc(50% + 1.25px)) no-repeat center / 12px 12px,var(--om-grey); }
.concept-search-box kbd { position: relative; width: auto; flex: 0 0 auto; margin-left: 12px; }
/* A hairline between the clear button and the esc chip; a pseudo-element, so the
   dialog keeps exactly the four kbd elements the markup contract pins. */
.concept-search-box kbd::before { content: ''; position: absolute; left: -12px; top: 50%; width: 1px; height: 20px; transform: translateY(-50%); background: var(--om-line); }
.concept-search-box:has(input:placeholder-shown) kbd::before { display: none; }
.concept-search-results { flex: 1; min-height: 0; overflow: auto; list-style: none; margin: 0; padding: 10px; display: flex; flex-direction: column; gap: 6px; }
.concept-search-group { font-size: 11px; font-weight: 650; letter-spacing: 1px; text-transform: uppercase; color: var(--om-light); margin: 8px 8px 2px; }
.concept-search-result a { position: relative; display: flex; flex-direction: column; gap: 2px; padding: 10px 44px 10px 12px; border-radius: 8px; }
.concept-search-result a:hover,.concept-search-result[aria-selected=true] a { background: var(--om-grey); color: inherit; }
/* HUB-109: the arrow-selected row is warm, hover stays grey, and the ↵ hint is an
   absolutely positioned pseudo-element so the row keeps its two-child layout. */
.concept-search-result[aria-selected=true] a { background: var(--om-warm); }
.concept-search-result[aria-selected=true] a::after { content: '↵'; position: absolute; right: 10px; top: 50%; transform: translateY(-50%); font: 11px/1.4 'Roboto',system-ui,sans-serif; color: var(--om-muted); border: 1px solid var(--om-line); background: #fff; border-radius: 5px; padding: 1px 5px; }
.concept-search-result-title { font: 600 15px/1.4 'Roboto',system-ui,sans-serif; }
.concept-search-result-snippet { font-size: 13px; color: var(--om-muted); }
.concept-search-result-collection { font-size: 12px; color: var(--om-light); }
.concept-search-results mark,.concept-search-page-results mark { background: #fff0d8; color: inherit; }
/* HUB-109: a centred no-results state. The magnifier is drawn from gradients on the
   pseudo-element — CSP-safe — and adds nothing to the line's textContent. */
.concept-search-empty { padding: 36px 24px 40px; text-align: center; font: 600 15px/1.4 'Roboto',system-ui,sans-serif; color: var(--om-text); }
.concept-search-empty::before { content: ''; display: block; width: 44px; height: 44px; margin: 0 auto 14px; border-radius: 50%; background: radial-gradient(circle at 19px 19px,transparent 0 5px,var(--om-orange) 5px 7.5px,transparent 7.5px),linear-gradient(45deg,transparent 0 42%,var(--om-orange) 42% 58%,transparent 58%) no-repeat 24px 24px / 9px 9px,var(--om-warm); }
/* No results needs no navigate/open legend, and a fresh empty query should show the
   input bar and the footer with a single hairline between them. */
.concept-search-modal:has(.concept-search-empty) .concept-search-footer { display: none; }
.concept-search-results:empty { display: none; }
.concept-search-modal:has(.concept-search-results:empty) .concept-search-footer { border-top: 0; }
.concept-search-footer { flex: 0 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 18px; border-top: 1px solid var(--om-line); font-size: 12px; color: var(--om-muted); }
.concept-search-hints { display: flex; align-items: center; gap: 14px; }
.concept-search-all { color: var(--om-orange); font-weight: 500; font-size: 13px; }

.concept-search-page { max-width: 720px; }
.concept-search-page-box { height: 52px; border-radius: 12px; padding: 0 18px; gap: 12px; margin-bottom: 20px; box-shadow: 0 8px 24px #1b1d2108; }
.concept-search-page-box input { font-size: 16px; }
.concept-search-page-status { color: var(--om-muted); font-size: 14px; margin: 0 0 12px; }
.concept-search-page-results { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.concept-search-page-results a { display: flex; flex-direction: column; gap: 2px; padding: 12px; border-radius: 8px; }
.concept-search-page-results a:hover { background: var(--om-grey); color: inherit; }
.concept-tree { margin-top: 32px; }
.concept-tree section { margin-bottom: 32px; scroll-margin-top: 24px; }
.concept-tree h2 { display: flex; align-items: center; gap: 9px; font-family: inherit; font-weight: 650; font-size: 11px; line-height: 1.5; letter-spacing: 1.1px; text-transform: uppercase; margin: 0 0 10px; }
.concept-tree h2 .concept-icon,.concept-tree h2 .concept-collection-icon { width: 15px; height: 15px; }
.concept-tree h2 a:hover { color: var(--om-orange); }
.concept-tree ul { list-style: none; padding: 0; margin: 0; }
.concept-tree li { margin: 0; font-size: 14px; line-height: 1.4; }
.concept-tree li a { display: flex; align-items: baseline; gap: 10px; min-height: 30px; padding: 5px 0; overflow-wrap: anywhere; color: var(--om-muted); }
.concept-tree li>a::before { content: '›'; color: #bcc1ca; flex: 0 0 8px; }
.concept-collection-icon { width: 20px; height: 20px; flex: 0 0 auto; object-fit: contain; }
.concept-tree li a:hover { color: var(--om-orange); }
.concept-tree [aria-current=page] { color: var(--om-text); font-weight: 700; }
.concept-count { color: var(--om-light); font-size: 12px; margin-left: auto; padding-left: 4px; flex: 0 0 auto; white-space: nowrap; min-width: 2.5ch; text-align: right; font-variant-numeric: tabular-nums; }
.concept-tree details ul { padding-left: 18px; }
.concept-tree summary { display: flex; align-items: baseline; list-style: none; gap: 10px; }
.concept-tree summary::-webkit-details-marker { display: none; }
.concept-tree summary::before { content: '›'; color: #bcc1ca; flex: 0 0 8px; }
.concept-tree details[open]>summary::before { transform: rotate(90deg); }
.concept-tree summary a { flex: 1; min-width: 0; }
main { min-width: 0; padding: 48px 0 80px; }

.concept-home { margin: 0 auto; }
.concept-hero { padding: 48px 0 56px; text-align: center; }
.concept-hero h1 { font-size: 52px; letter-spacing: -.035em; margin: 0 0 16px; }
.concept-hero-subtitle { color: var(--om-muted); font-size: 18px; line-height: 1.4; max-width: 530px; margin: 0 auto 28px; }
.concept-hero-search { position: relative; max-width: 520px; margin: auto; }
.concept-hero-box { height: 52px; border-radius: 12px; padding: 0 18px; gap: 12px; box-shadow: 0 8px 24px #1b1d2108; }
.concept-hero-box .concept-icon { color: var(--om-muted); }
.concept-hero-box input { font-size: 16px; }
.concept-popular { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; margin-top: 22px; font-size: 14px; color: var(--om-muted); }
.concept-popular button { font-size: 12px; font-weight: 500; padding: 3px 12px; color: #384152; }
.concept-doors { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
.concept-doors>a { border: 1px solid #dfe2e8; border-radius: var(--om-radius); padding: 32px 28px 28px; min-height: 210px; text-align: left; background: white; }
.concept-doors>a:hover { border-color: var(--om-orange); color: inherit; }
.concept-doors .concept-icon { display: block; color: var(--om-orange); width: 38px; height: 38px; margin: 0 0 26px 8px; stroke-width: 1; }
.concept-doors h2 { font: 700 18px/1.3 'Roboto',system-ui,sans-serif; letter-spacing: 0; margin: 0 0 14px; }
.concept-doors p { font-size: 15px; line-height: 1.55; color: var(--om-muted); margin: 0; }
.concept-onboarding { display: grid; grid-template-columns: minmax(0,.9fr) minmax(0,1.1fr); gap: 48px; margin: 64px 0 0; }
.concept-onboarding h2 { font-size: 32px; max-width: 320px; margin: 0 0 14px; }
.concept-onboarding p { color: var(--om-muted); margin: 0 0 14px; }
.concept-see-all { color: var(--om-orange); font-size: 14px; }
.concept-onboarding ol { list-style: none; margin: 0; padding: 0; display: grid; align-content: start; gap: 12px; }
.concept-onboarding li { border: 1px solid #dfe2e8; border-radius: var(--om-radius); }
.concept-onboarding li a { display: flex; align-items: flex-start; gap: 16px; padding: 18px 20px; font-size: 15px; line-height: 1.4; }
.concept-step-number { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%; background: var(--om-warm); color: var(--om-orange); font-size: 14px; flex: 0 0 auto; }
.concept-step-description { display: block; color: var(--om-muted); font-size: 14px; margin-top: 2px; }
.concept-more-steps { display: flex; justify-content: center; padding: 6px 0 0; font-size: 14px; color: var(--om-muted); border: 0; }

.breadcrumbs { font-size: 14px; color: var(--om-muted); margin: 0 0 16px; }
.breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 7px; padding: 0; margin: 0; }
.breadcrumbs li+li::before { content: '/'; margin-right: 7px; color: #cbd0d7; }
.breadcrumbs [aria-current=page] { color: var(--om-text); }
.article-layout { display: grid; grid-template-columns: minmax(0,1fr) 220px; gap: 40px; }
.article { min-width: 0; }
.lede { color: var(--om-muted); font-size: 20px; line-height: 1.5; margin: 0 0 16px; }
.updated { color: var(--om-light); font-size: 13px; margin: 0; }
.updated span { padding: 0 7px; }
.page-article > h1 { margin-bottom: 12px; }
.page-article > .concept-page-actions { margin: 8px 0 30px; }
.concept-page-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; font-size: 12px; color: var(--om-muted); margin: 10px 0 26px; }
.concept-page-actions button { padding: 0; border: 0; border-radius: 0; font-size: inherit; color: inherit; }
.concept-page-actions button:hover,.concept-page-actions a:hover { color: var(--om-orange); }
.concept-page-actions [role=status]:not(:empty) { width: 100%; }
.article-body { font-size: 16px; line-height: 1.65; overflow-wrap: anywhere; }
.article-body p,.article-body ul,.article-body ol { max-width: 68ch; }
.article-body p:has(img),.article-body p:has(video),.article-body p:has(iframe) { max-width: none; }
.article-body p { margin: 0 0 24px; }
.article-body h2,.article-body h3,.article-body h4 { margin-top: 32px; margin-bottom: 24px; scroll-margin-top: 96px; }
.article-body h2 { font-size: 22px; }
.article-body a { color: var(--om-orange); text-decoration: underline; text-underline-offset: 3px; }
.article-body img { border-radius: 10px; }
.article-body iframe,.article-body video { max-width: 100%; }
.article-body pre { overflow: auto; padding: 20px; background: #1f2328; color: #f3f4f6; border-radius: 8px; font-size: 14px; line-height: 1.55; white-space: pre-wrap; }
.article-body code,.article-body pre,.article-body samp { font-family: inherit; }
.article-body :not(pre)>code { background: #f0f1f3; border-radius: 4px; padding: 2px 5px; font-size: .88em; }
.article-body table { display: block; max-width: 100%; overflow: auto; border-collapse: collapse; margin: 24px 0; }
.article-body th,.article-body td { padding: 10px 14px; border: 1px solid var(--om-line); }
.article-body blockquote,.article-body .hc-quote { border: 1px solid var(--om-line); border-radius: 12px; margin: 24px 0; padding: 12px 18px; background: var(--om-grey); font-style: italic; }
.article-body blockquote p:last-child { margin-bottom: 0; }
.article-body blockquote:first-of-type { font-style: normal; padding: 16px 20px; }
.hc-code-block { position: relative; padding-top: 24px; margin: 24px 0; }
.hc-code-header { position: absolute; inset: 0 0 auto; display: flex; justify-content: space-between; align-items: flex-start; font-size: 11px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--om-light); }
.hc-code-header>span { line-height: 18px; }
.hc-code-copy { margin: 34px 12px 0 12px; padding: 5px 10px; background: #393d42; color: white; border: 1px solid #51555a; border-radius: 999px; font: 500 12px/1.3 'Roboto',system-ui,sans-serif; text-transform: none; letter-spacing: 0; }
.hc-code-copy::before { content: '▢'; margin-right: 5px; }
.hc-code-block pre { margin: 0; padding-right: 96px; }
.article-toc { font-size: 14px; min-width: 0; padding-top: 40px; }
.article-toc-sticky { position: sticky; top: 96px; max-height: calc(100vh - 120px); overflow-y: auto; }
.article-toc h2 { font-family: inherit; font-size: 11px; font-weight: 650; letter-spacing: 1px; text-transform: uppercase; color: var(--om-light); margin: 0 0 16px; }
.article-toc-list { list-style: none; padding: 0; margin: 0; }
.article-toc-entry a { display: block; padding: 7px 0; color: var(--om-muted); line-height: 1.4; }
.article-toc-entry-secondary { padding-left: 20px; }
.article-toc-entry-secondary a { color: var(--om-light); }
.article-toc-entry.is-active>a,.article-toc-entry>a[aria-current] { color: var(--om-text); font-weight: 700; }
.article-toc-step { display: none; }
.article-toc-group-label { font-weight: 650; }
.concept-article-end { border-top: 1px solid var(--om-line); padding-top: 28px; margin-top: 32px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.sidebar-feedback-card { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.sidebar-feedback-card h2 { font: 400 14px/1.5 'Roboto',system-ui,sans-serif; letter-spacing: 0; color: var(--om-muted); margin: 0; }
.sidebar-feedback-actions { display: flex; gap: 10px; }
.sidebar-feedback-actions button { font-size: 13px; min-height: 36px; padding: 6px 16px; }
.sidebar-feedback-thanks { font-size: 13px; margin: 0; }
.concept-next { display: flex; align-items: center; gap: 24px; border: 1px solid var(--om-line); border-radius: 12px; padding: 12px 16px; max-width: 50%; font-size: 14px; }
.concept-next small { display: block; color: var(--om-light); font-size: 11px; margin-bottom: 2px; }
.concept-next>span:last-child { color: var(--om-orange); }
.article-related-grid,.article-faq { border-top: 1px solid var(--om-line); padding-top: 28px; margin-top: 36px; }
.article-related-grid h2 { font-size: 22px; }
.article-related-grid ul,.concept-article-list { list-style: none; padding: 0; margin: 28px 0 0; }
.article-related-grid li,.concept-article-list li { padding: 18px 0; border-bottom: 1px solid var(--om-line); }
.concept-article-list a { font-size: 18px; font-weight: 650; }
.concept-article-list p { color: var(--om-muted); margin: 5px 0 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.page-collection { max-width: 800px; }
/* HUB-86 curated course: one ordered path of numbered steps joined by a hairline rule. */
.concept-course { max-width: 860px; }
.concept-step-label { font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: 1px; color: var(--om-orange); margin: 0 0 10px; }
.concept-course .lede { font-size: 18px; max-width: 560px; margin: 0 0 10px; }
.concept-course-meta { font-size: 13px; color: var(--om-light); margin: 0 0 36px; }
.concept-course-meta span { padding: 0 7px; }
.concept-course-steps { list-style: none; margin: 0; padding: 0; }
.concept-course-steps li { display: grid; grid-template-columns: 32px minmax(0,1fr) 240px; gap: 24px; align-items: start; padding: 0 0 36px; position: relative; }
.concept-course-steps li:last-child { padding-bottom: 0; }
.concept-course-line { position: absolute; left: 15px; top: 40px; bottom: 0; width: 1px; background: var(--om-line); }
.concept-course-steps .concept-step-number { position: relative; font-weight: 500; }
.concept-course-body { display: flex; flex-direction: column; gap: 6px; padding-top: 3px; min-width: 0; }
.concept-course-title { font-size: 18px; font-weight: 650; }
.concept-course-body .concept-step-description { font-size: 15px; line-height: 1.55; margin-top: 0; }
.concept-course-more { color: var(--om-orange); font-size: 14px; font-weight: 500; margin-top: 4px; }
.concept-course-art { height: 140px; border: 1px solid #dfe2e8; border-radius: 12px; background: var(--om-grey); display: grid; place-items: center; overflow: hidden; }
.concept-course-art img { width: 100%; height: 100%; object-fit: cover; }
.concept-course-placeholder { width: 44px; height: 44px; color: #bcc1ca; }
.article-faq details { padding: 12px 0; }
.hc-download-card { display: flex; align-items: center; gap: 12px; padding: 16px; border: 1px solid var(--om-line); border-radius: 12px; }
.hc-download-card svg { width: 24px; height: 24px; }

.concept-footer { border-top: 1px solid var(--om-line); background: #f7f8fa; padding: 40px 40px 36px; }
.concept-footer-inner { max-width: 1280px; margin: auto; }
.concept-footer-top { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px 24px; }
.concept-footer-brand { display: flex; align-items: center; gap: 20px; }
.concept-footer p { color: var(--om-muted); font-size: 14px; margin: 0; }
.concept-footer-top nav { display: flex; flex-wrap: wrap; gap: 24px; font-size: 14px; color: var(--om-muted); }
.concept-footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 24px; border-top: 1px solid #dfe2e8; margin-top: 24px; padding-top: 20px; color: var(--om-muted); font-size: 13px; }
.concept-footer-bottom nav { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.concept-footer-bottom nav span { color: #cbd0d7; }

@media (max-width:1360px) {
  .concept-header,.concept-layout { margin-left: 40px; margin-right: 40px; }
  .concept-header { gap: 20px; }
  .concept-account-nav { gap: 16px; }
  .concept-layout { grid-template-columns: 240px minmax(0,1fr); gap: 32px; }
  .concept-sidebar { padding-right: 24px; }
  .article-layout { grid-template-columns: minmax(0,1fr) 190px; gap: 28px; }
}
@media (min-width:901px) {
  .concept-sidebar>details:not([open])>.concept-navigation { display: block; }
}
@media (max-width:1200px) {
  .article-layout { grid-template-columns: minmax(0,1fr); }
  .article-toc { display: none; }
  .concept-hero h1 { font-size: 46px; }
  .concept-doors>a { padding: 26px 18px; }
  .concept-onboarding { gap: 24px; }
}
@media (max-width:900px) {
  .concept-header { margin: 8px 20px 0; padding: 14px 18px; gap: 16px; }
  .concept-layout { display: block; margin: 0 24px; }
  .concept-sidebar { padding: 24px 0 0; border-right: 0; }
  .concept-sidebar>details { padding: 0; }
  .concept-sidebar>details>summary { display: list-item; padding: 12px; border: 1px solid var(--om-line); border-radius: 10px; }
  .concept-navigation { margin-top: 16px; }
  .concept-sidebar details[open]>.concept-navigation { max-height: 65vh; overflow: auto; padding: 4px; }
  main { padding: 32px 0 56px; }
  .concept-hero { padding: 12px 0 36px; }
  .concept-onboarding { margin-top: 48px; }
  .concept-footer { padding: 40px 24px 32px; }
}
@media (max-width:600px) {
  h1 { font-size: 32px; }
  .concept-header { margin: 8px 16px 0; padding: 14px 16px; }
  .concept-header-divider,.concept-header-label { display: none; }
  /* The back link leaves the card and sits above the "Search and browse" disclosure;
     .concept-header is the positioning context and .concept-layout reserves the row. */
  .concept-back { position: absolute; top: 100%; left: 4px; margin-top: 20px; gap: 8px; font-size: 13px; }
  .concept-back-icon { width: 14px; height: 14px; }
  .concept-layout { padding-top: 30px; }
  .concept-brand { width: 140px; }
  .concept-brand img { width: 140px; height: auto; }
  .concept-brand::after { width: 27px; mask-size: 140px auto; }
  .concept-account-nav { gap: 12px; font-size: 12px; flex: 1; justify-content: flex-end; }
  .concept-login { min-height: 34px; padding: 6px 14px; }
  .concept-layout { margin: 0 20px; }
  /* HUB-109: the palette sits higher on a phone, so a soft keyboard leaves room. */
  .concept-search-modal { top: 72px; max-height: calc(100vh - 104px); }
  .concept-hero h1 { font-size: 40px; }
  .concept-hero-subtitle { font-size: 17px; }
  .concept-popular { font-size: 12px; gap: 6px; }
  .concept-popular button { padding: 3px 9px; font-size: 11px; }
  .concept-doors,.concept-onboarding { grid-template-columns: 1fr; }
  .concept-doors>a { padding: 24px; min-height: 0; }
  .concept-doors .concept-icon { margin: 0 0 18px; }
  .concept-onboarding h2 { font-size: 32px; }
  .concept-onboarding li a { padding: 16px; }
  /* One column on a phone: the step illustration is decorative, so it drops out. */
  .concept-course-steps li { grid-template-columns: 32px minmax(0,1fr); gap: 16px; padding-bottom: 28px; }
  .concept-course-art { display: none; }
  /* The bubble floats over the end of the article; keep it off the Up next card.
     Its own phone offsets sit with the bubble's rules below, after the base ones. */
  .concept-article-end { flex-wrap: wrap; margin-bottom: 72px; }
  .concept-next { margin-left: auto; max-width: 100%; }
  .concept-footer-brand { gap: 14px; }
  .concept-footer-top { gap: 16px; }
  .concept-footer-top nav { gap: 16px; font-size: 13px; }
  .concept-footer-bottom { flex-direction: column; align-items: flex-start; gap: 10px; margin-top: 20px; font-size: 12px; }
}
@media (prefers-reduced-motion:reduce) {
  * { scroll-behavior: auto !important; }
}

.article-image-lightbox-trigger {
  cursor: zoom-in;
}

.portal-media-modal-open {
  overflow: hidden;
}

.portal-media-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: #151515e8;
  display: grid;
  place-items: center;
  padding: 24px;
}

.portal-media-dialog {
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.portal-media-controls {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding-bottom: 12px;
}

.portal-media-content {
  flex: 1;
  min-height: 0;
  overflow: auto;
  display: grid;
  place-items: center;
}

.portal-media-image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  cursor: zoom-in;
}

.portal-media-content.is-zoomed {
  display: block;
}

.portal-media-content.is-zoomed .portal-media-image {
  max-width: none;
  max-height: none;
  cursor: zoom-out;
}

.portal-media-frame {
  width: min(100%,1200px);
  height: 100%;
  border: 0;
}


/* Preserve the presentation of published authoring blocks in the shared body. */
.article-body .hc-toggle { overflow: hidden; margin: 14px 0; border: 1px solid var(--om-line); border-radius: 9px; background: #f8fafc; }
.article-body .hc-toggle summary { position: relative; padding: 12px 38px 12px 38px; cursor: pointer; font-weight: 700; list-style: none; }
.article-body .hc-toggle summary::-webkit-details-marker { display: none; }
.article-body .hc-toggle summary::before { position: absolute; top: 50%; left: 14px; color: #64748b; content: "›"; transform: translateY(-50%); transition: transform .15s ease; }
.article-body .hc-toggle[open] summary::before { transform: translateY(-50%) rotate(90deg); }
.article-body .hc-toggle[open] summary { border-bottom: 1px solid var(--om-line); }
.article-body .hc-toggle > :not(summary) { margin-inline: 30px; }
.article-body .hc-toggle > :nth-child(2) { margin-top: 14px; }
.article-body .hc-toggle > :last-child { margin-bottom: 14px; }
.article-body .hc-check-list { display: grid; gap: 9px; margin: 18px 0 24px; padding: 0; list-style: none; }
.article-body .hc-check-item { display: flex; align-items: flex-start; gap: 9px; margin: 0; }
.article-body .hc-check-mark { width: 14px; height: 14px; flex: 0 0 auto; margin-top: 5px; border: 1px solid #9ca3af; border-radius: 2px; background: var(--om-warm); }
.article-body .hc-check-item.is-checked .hc-check-mark { display: grid; border-color: var(--om-orange); background: var(--om-orange); color: #fff; place-items: center; }
.article-body .hc-check-item.is-checked .hc-check-mark::after { content: "✓"; font-size: 11px; font-weight: 700; line-height: 1; }
.article-body .hc-callout { display: grid; grid-template-columns: 18px auto minmax(0, 1fr); align-items: start; gap: 5px; margin: 18px 0; padding: 12px 14px; border: 1px solid; border-radius: 9px; color: var(--om-text); }
.article-body .hc-callout-without-icon { grid-template-columns: auto minmax(0, 1fr); }
.article-body .hc-callout-without-label { grid-template-columns: 18px minmax(0, 1fr); }
.article-body .hc-callout-without-icon.hc-callout-without-label { grid-template-columns: minmax(0, 1fr); }
.article-body .hc-callout-info { border-color: #bfdbfe; background: #eff6ff; }
.article-body .hc-callout-warning { border-color: #fde68a; background: #fffbeb; }
.article-body .hc-callout-success { border-color: #a7f3d0; background: #ecfdf5; }
.article-body .hc-callout-tip { border-color: #e9d5ff; background: #faf5ff; }
.article-body .hc-callout-icon::before { font-size: 14px; font-weight: 700; }
.article-body .hc-callout-info .hc-callout-icon::before { color: #2563eb; content: "i"; }
.article-body .hc-callout-warning .hc-callout-icon::before { color: #d97706; content: "⚠"; }
.article-body .hc-callout-success .hc-callout-icon::before { color: #059669; content: "✓"; }
.article-body .hc-callout-tip .hc-callout-icon::before { content: "💡"; }
.article-body .hc-callout .hc-callout-icon-info::before { color: #2563eb; content: "i"; }
.article-body .hc-callout .hc-callout-icon-question::before { color: #2563eb; content: "?"; }
.article-body .hc-callout .hc-callout-icon-warning::before { color: #d97706; content: "⚠"; }
.article-body .hc-callout .hc-callout-icon-alert::before { color: #dc2626; content: "!"; }
.article-body .hc-callout .hc-callout-icon-check::before { color: #059669; content: "✓"; }
.article-body .hc-callout .hc-callout-icon-bulb::before { content: "💡"; }
.article-body .hc-callout .hc-callout-icon-sparkles::before { color: #7e22ce; content: "✦"; }
.article-body .hc-callout-content p { margin-bottom: 0; }

/* The first published callout follows the neutral introductory artboard treatment. */
.article-body .hc-callout:not(.hc-callout ~ .hc-callout) { border-color: var(--om-line); background: var(--om-grey); border-radius: 12px; padding: 16px 20px; }
.article-body .hc-callout:not(.hc-callout ~ .hc-callout) .hc-callout-icon::before { color: var(--om-muted); }
/* HUB-88: the OptiBot bubble owns the bottom-right corner, so back-to-top stacks above it. */
.back-to-top { position: fixed; right: 24px; bottom: 92px; opacity: 0; pointer-events: none; z-index: 20; }
.back-to-top-visible { opacity: 1; pointer-events: auto; }

/* HUB-88: the portal's only support entry point. The bubble is the artboard's; the
   panel it opens stays in the customer-chat widget's own chrome. */
.concept-optibot { position: fixed; right: 24px; bottom: 24px; z-index: 30; display: flex; flex-direction: column; align-items: flex-end; gap: 10px; }
.concept-optibot[hidden],.concept-optibot-tip[hidden],.concept-optibot-launcher[hidden] { display: none; }
.concept-optibot-tip { display: flex; align-items: center; gap: 8px; max-width: min(260px,calc(100vw - 48px)); padding: 8px 8px 8px 14px; font-size: 13px; color: var(--om-text); background: #fff; border: 1px solid var(--om-line); border-radius: 12px; box-shadow: 0 8px 24px #1b1d2110; }
.concept-optibot-tip-close { display: grid; place-items: center; width: 20px; height: 20px; padding: 0; color: var(--om-muted); background: none; border: 0; border-radius: 50%; cursor: pointer; }
.concept-optibot-tip-close:hover { color: var(--om-text); background: var(--om-grey); }
.concept-optibot-tip-close svg { width: 12px; height: 12px; }
.concept-optibot-launcher { display: grid; place-items: center; width: 56px; height: 56px; padding: 0; color: #fff; background: var(--om-orange); border: 0; border-radius: 50%; box-shadow: 0 12px 35px #23262a26; cursor: pointer; transition: transform 160ms ease,box-shadow 160ms ease; }
.concept-optibot-launcher:hover { transform: translateY(-1px); box-shadow: 0 14px 38px #23262a33; }
.concept-optibot-launcher:focus-visible { outline: 3px solid #ed5c2c59; outline-offset: 2px; }
.concept-optibot-launcher svg { width: 26px; height: 26px; }
/* After the two rules above, not with the other phone rules higher up: same
   specificity, so only the later declaration wins. */
@media (max-width:600px) {
  .concept-optibot { right: 16px; bottom: 16px; }
  .back-to-top { right: 16px; bottom: 76px; }
}
@media (prefers-reduced-motion:reduce) {
  .concept-optibot-launcher { transition: none; }
}

/* Labels wrap while counts stay on the first line in the rail and collection lists. */
.concept-row-label { flex: 1 1 auto; min-width: 0; overflow-wrap: anywhere; }
.concept-collection-row { display: flex; align-items: baseline; gap: 10px; }
.concept-collection-title { display: flex; align-items: center; gap: 16px; }
.concept-collection-title .concept-collection-icon { width: 52px; height: 52px; }

.page-article > .article-body > :first-child { margin-top: 0; }

.concept-group-caption { font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 1px; color: var(--om-muted); margin: 0 0 8px; }