/* ===== Clay brand knowledge base (.kb) =====
   Customer brand surface: UI Book chapter 20 exception (exempt from dna-ui-check).
   The SAME stylesheet draws the editor canvas and the public site.
   Brand values come from the Theme object (themeRootAttrs / themeVars in @clay/render):
     --kb-brand, --kb-brand-dark, --kb-font-heading, --kb-font-body
   Root: <div class="kb" data-mode="light|dark|auto" data-layout="help-center|docs" style="...">
   Moved from design/mockup-clay.html (.kb* rules); phone rules use a container query instead of the
   mockup's device frame, so the editor's phone preview and a real phone get the same layout. */

.kb {
  --kb-accent: var(--kb-brand, #d63a7a);
  --kb-accent-soft: color-mix(in srgb, var(--kb-accent) 8%, #ffffff);
  --kb-ink: #1d1b1e; --kb-body: #4a464c; --kb-muted: #807a83; --kb-line: #ece7ea;
  --kb-bg: #ffffff; --kb-tint: #faf7f8; --kb-surface: #ffffff;
  --kb-img: linear-gradient(135deg, color-mix(in srgb, var(--kb-accent) 12%, #ffffff), #e9e4f2);
  --kb-warn: #b45309; --kb-warn-soft: #fef3e2;
  --kb-ok: #15803d; --kb-ok-soft: #e8f6ec;
  --kb-code-bg: #f6f3f5;
  --kb-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --kb-head-font: var(--kb-font-heading, var(--kb-font-body, system-ui, sans-serif));
  --kb-body-font: var(--kb-font-body, system-ui, sans-serif);
  background: var(--kb-bg); color: var(--kb-body); font-family: var(--kb-body-font);
  font-size: 16px; line-height: 1.65; min-height: 100%;
  container-type: inline-size;
}
.kb[data-mode="dark"] {
  --kb-accent: var(--kb-brand-dark, #ef6aa0);
  --kb-accent-soft: color-mix(in srgb, var(--kb-accent) 12%, transparent);
  --kb-ink: #f6f1f4; --kb-body: #c8bfc5; --kb-muted: #8f868c; --kb-line: #2b2529;
  --kb-bg: #121013; --kb-tint: #1a161a; --kb-surface: #19151a;
  --kb-img: linear-gradient(135deg, #2a1d24, #221f2c);
  --kb-warn: #f5b454; --kb-warn-soft: rgba(245,180,84,0.12);
  --kb-ok: #6fd391; --kb-ok-soft: rgba(111,211,145,0.12);
  --kb-code-bg: #1f1a1f;
}
@media (prefers-color-scheme: dark) {
  .kb[data-mode="auto"] {
    --kb-accent: var(--kb-brand-dark, #ef6aa0);
    --kb-accent-soft: color-mix(in srgb, var(--kb-accent) 12%, transparent);
    --kb-ink: #f6f1f4; --kb-body: #c8bfc5; --kb-muted: #8f868c; --kb-line: #2b2529;
    --kb-bg: #121013; --kb-tint: #1a161a; --kb-surface: #19151a;
    --kb-img: linear-gradient(135deg, #2a1d24, #221f2c);
    --kb-warn: #f5b454; --kb-warn-soft: rgba(245,180,84,0.12);
    --kb-ok: #6fd391; --kb-ok-soft: rgba(111,211,145,0.12);
    --kb-code-bg: #1f1a1f;
  }
  .kb[data-mode="auto"] .kb-bigsearch { box-shadow: none; }
}
.kb[data-mode="dark"] .kb-bigsearch { box-shadow: none; }

.kb * { box-sizing: border-box; }
.kb a { color: var(--kb-accent); text-decoration: none; }
.kb-icon { flex-shrink: 0; vertical-align: middle; }

/* ---------- page chrome: header, footer ---------- */
.kb-logo, .kb-links a { white-space: nowrap; }
.kb-head { display: flex; align-items: center; gap: 28px; padding: 0 40px; height: 64px; border-bottom: 1px solid var(--kb-line); background: var(--kb-bg); }
.kb-logo { font-family: var(--kb-head-font); font-weight: 700; font-size: 26px; letter-spacing: -0.03em; color: var(--kb-accent); }
.kb-logo span { color: var(--kb-ink); font-weight: 500; font-size: 15px; letter-spacing: 0; margin-left: 8px; }
.kb-links { display: flex; gap: 22px; font-size: 14px; font-weight: 500; }
.kb-links a { color: var(--kb-body); }
.kb-search { margin-left: auto; display: flex; align-items: center; gap: 8px; width: 300px; height: 38px; padding: 0 6px 0 12px; border: 1px solid var(--kb-line); border-radius: 999px; color: var(--kb-muted); font-size: 14px; background: var(--kb-tint); }
.kb-search input { flex: 1; min-width: 0; border: 0; background: transparent; font: inherit; color: var(--kb-ink); outline: none; }
.kb-ask { display: inline-flex; align-items: center; gap: 6px; height: 28px; padding: 0 12px; border: 0; border-radius: 999px; background: var(--kb-accent); color: #fff; font: 600 13px var(--kb-body-font); cursor: pointer; }
.kb-mode { display: inline-flex; padding: 2px; border: 1px solid var(--kb-line); border-radius: 999px; background: var(--kb-tint); }
.kb-mode button { height: 26px; padding: 0 10px; border: 0; border-radius: 999px; background: transparent; color: var(--kb-muted); font: 500 12px var(--kb-body-font); cursor: pointer; }
.kb-mode button[aria-pressed="true"] { background: var(--kb-surface); color: var(--kb-ink); box-shadow: 0 1px 2px rgba(0,0,0,0.12); }
.kb-head .kb-mode { margin-left: 4px; }
.kb-foot { border-top: 1px solid var(--kb-line); background: var(--kb-tint); }
.kb-foot-in { max-width: 1120px; margin: 0 auto; padding: 22px 40px; display: flex; align-items: center; gap: 18px; font-size: 13px; color: var(--kb-muted); }
.kb-foot-in .kb-agents { margin-left: auto; display: flex; gap: 14px; }
.kb-foot-in .kb-agents a { color: var(--kb-muted); font-family: var(--kb-mono); font-size: 12px; }
.kb-powered b { color: var(--kb-ink); font-weight: 600; }

/* ---------- article page ---------- */
.kb-wrap { max-width: 1120px; margin: 0 auto; padding: 32px 40px 56px; }
.kb-crumbs { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--kb-muted); margin-bottom: 18px; }
.kb-crumbs a { color: var(--kb-muted); }
.kb-cols { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 56px; }
.kb-article { max-width: 720px; }
.kb h1 { font-family: var(--kb-head-font); font-size: 40px; line-height: 1.15; letter-spacing: -0.02em; color: var(--kb-ink); margin: 0 0 10px; font-weight: 700; }
.kb h2 { font-family: var(--kb-head-font); font-size: 24px; line-height: 1.3; color: var(--kb-ink); margin: 36px 0 10px; font-weight: 600; scroll-margin-top: 24px; }
.kb h3 { font-family: var(--kb-head-font); font-size: 19px; line-height: 1.35; color: var(--kb-ink); margin: 28px 0 8px; font-weight: 600; scroll-margin-top: 24px; }
.kb p { margin: 0 0 16px; }
.kb-meta { font-size: 14px; color: var(--kb-muted); margin-bottom: 24px; }
.kb-lead { font-size: 18px; color: var(--kb-ink); }
.kb-helpful { display: flex; align-items: center; gap: 12px; padding: 18px 20px; border: 1px solid var(--kb-line); border-radius: 12px; margin: 36px 0 28px; color: var(--kb-ink); font-weight: 500; }
.kb-helpful button { display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--kb-line); background: var(--kb-surface); font: 500 14px var(--kb-body-font); color: var(--kb-ink); cursor: pointer; }
.kb-helpful button:hover { border-color: var(--kb-accent); color: var(--kb-accent); }
.kb-helpful .kb-contact { margin-left: auto; font-size: 14px; }
.kb-toc { position: sticky; top: 24px; align-self: start; font-size: 14px; }
.kb-toc h4 { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--kb-muted); margin: 0 0 10px; font-weight: 600; }
.kb-toc a { display: block; padding: 5px 0 5px 12px; border-left: 2px solid var(--kb-line); color: var(--kb-body); }
.kb-toc a.kb-toc-l3 { padding-left: 24px; font-size: 13px; }
.kb-toc a.on { border-left-color: var(--kb-accent); color: var(--kb-ink); font-weight: 500; }

/* ---------- blocks (renderHtml / ProseMirror toDOM) ---------- */
.kb-list { margin: 0 0 16px; padding-left: 24px; }
.kb-list li { margin: 0 0 4px; }
.kb-list li > p { margin: 0 0 4px; }
.kb-list .kb-list { margin: 4px 0 0; }
.kb-quote { margin: 0 0 20px; padding: 4px 0 4px 16px; border-left: 3px solid var(--kb-accent); color: var(--kb-ink); }
.kb-quote > :last-child { margin-bottom: 0; }
.kb code { font-family: var(--kb-mono); font-size: 0.9em; background: var(--kb-code-bg); border-radius: 4px; padding: 1px 5px; }
.kb-code { margin: 0 0 20px; padding: 14px 16px; border-radius: 12px; background: var(--kb-code-bg); border: 1px solid var(--kb-line); overflow-x: auto; font-size: 14px; line-height: 1.55; }
.kb-code code { background: none; padding: 0; border-radius: 0; font-size: inherit; white-space: pre; }

.kb-callout { display: flex; gap: 12px; padding: 14px 16px; border-radius: 12px; background: var(--kb-accent-soft); color: var(--kb-ink); margin: 0 0 20px; }
.kb-callout > .kb-icon { color: var(--kb-accent); margin-top: 4px; }
.kb-callout-info { background: var(--kb-accent-soft); }
.kb-callout-warning { background: var(--kb-warn-soft); }
.kb-callout-warning > .kb-icon { color: var(--kb-warn); }
.kb-callout-success { background: var(--kb-ok-soft); }
.kb-callout-success > .kb-icon { color: var(--kb-ok); }
.kb-callout-body { flex: 1; min-width: 0; }
.kb-callout-body > :last-child { margin-bottom: 0; }

.kb-steps { list-style: none; padding: 0; margin: 0 0 20px; counter-reset: s; }
.kb-steps > li { counter-increment: s; position: relative; padding: 0 0 18px 48px; }
.kb-steps > li::before { content: counter(s); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%; background: var(--kb-ink); color: var(--kb-bg); display: grid; place-items: center; font: 600 14px var(--kb-body-font); }
.kb-step-title { display: block; color: var(--kb-ink); }
.kb-step-body > :last-child { margin-bottom: 0; }

.kb-figure { margin: 10px 0 20px; }
.kb-steps .kb-figure { margin-bottom: 0; }
.kb-img { border-radius: 12px; background: var(--kb-img); position: relative; overflow: hidden; }
.kb-img img { display: block; width: 100%; height: auto; }
.kb-figure figcaption { font-size: 13px; color: var(--kb-muted); margin-top: 6px; }

.kb-table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 0 0 20px; }
.kb-table th { text-align: left; font-weight: 600; color: var(--kb-ink); border-bottom: 2px solid var(--kb-line); padding: 8px 10px; }
.kb-table td { border-bottom: 1px solid var(--kb-line); padding: 8px 10px; }

.kb-tabs { margin: 0 0 20px; border: 1px solid var(--kb-line); border-radius: 12px; overflow: hidden; }
.kb-tab { padding: 14px 16px; }
.kb-tab + .kb-tab { border-top: 1px solid var(--kb-line); }
.kb-tab-label { font-weight: 600; color: var(--kb-ink); margin-bottom: 8px; }
.kb-tab-panel > :last-child { margin-bottom: 0; }

.kb-media figcaption { margin-top: 8px; }
.kb-video { display: block; width: 100%; aspect-ratio: 16 / 9; border-radius: 12px; background: #1d1b1e; }
.kb-transcript { margin: 8px 0 0; }
.kb-transcript > summary { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 500; color: var(--kb-accent); cursor: pointer; list-style: none; }
.kb-transcript > summary::-webkit-details-marker { display: none; }
.kb-transcript-body { padding: 12px 16px; border-left: 3px solid var(--kb-line); font-size: 14px; color: var(--kb-muted); margin: 8px 0 0; }
.kb-transcript-body > :last-child { margin-bottom: 0; }

.kb-faq { border-top: 1px solid var(--kb-line); margin-bottom: 20px; }
.kb-faq-q { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--kb-line); font: 600 16px var(--kb-body-font); color: var(--kb-ink); cursor: pointer; list-style: none; }
.kb-faq-q-text { flex: 1; min-width: 0; }
.kb-faq-q::-webkit-details-marker { display: none; }
.kb-faq-a { padding: 10px 0 14px; border-bottom: 1px solid var(--kb-line); }
.kb-faq-a > :last-child { margin-bottom: 0; }
.kb-faq-item .kb-chevron { transform: rotate(-90deg); transition: transform .15s; }
.kb-faq-item[open] .kb-chevron { transform: rotate(0); }

.kb-file { margin: 0 0 20px; }
.kb-file-link { display: inline-flex; align-items: center; gap: 10px; padding: 10px 14px; border: 1px solid var(--kb-line); border-radius: 12px; background: var(--kb-surface); color: var(--kb-ink) !important; font-weight: 500; }
.kb-file-link:hover { border-color: var(--kb-accent); }
.kb-file-link .kb-icon { color: var(--kb-accent); }
.kb-file-name { overflow-wrap: anywhere; }
.kb-file-size { color: var(--kb-muted); font-size: 13px; font-weight: 400; font-variant-numeric: tabular-nums; }

.kb-snippet { display: contents; }

/* Video embed (YouTube / Vimeo): a click-to-load facade. Nothing loads from the video site until the click;
   then site.js swaps in the player (.kb-embed-frame). */
.kb-embed-facade { position: relative; display: flex; align-items: flex-end; aspect-ratio: 16 / 9; border-radius: 12px; overflow: hidden; background: linear-gradient(135deg, color-mix(in srgb, var(--kb-accent) 55%, #1d1b1e), #1d1b1e 75%); color: #fff !important; text-decoration: none; }
.kb-embed-poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.kb-embed-play { position: absolute; left: 50%; top: 50%; width: 72px; height: 72px; margin: -36px 0 0 -36px; border-radius: 50%; background: var(--kb-accent); color: #fff; display: grid; place-items: center; box-shadow: 0 8px 24px rgba(0,0,0,0.3); transition: transform .15s; }
.kb-embed-play .kb-icon { fill: currentColor; margin-left: 4px; }
.kb-embed-facade:hover .kb-embed-play, .kb-embed-facade:focus-visible .kb-embed-play { transform: scale(1.06); }
.kb-embed-meta { position: relative; width: 100%; display: flex; flex-direction: column; gap: 2px; padding: 28px 18px 14px; background: linear-gradient(transparent, rgba(0,0,0,0.6)); }
.kb-embed-title { font: 600 16px/1.35 var(--kb-body-font); color: #fff; }
.kb-embed-note { font-size: 12px; color: rgba(255,255,255,0.8); }
.kb-embed-frame { display: block; width: 100%; aspect-ratio: 16 / 9; border: 0; border-radius: 12px; background: #000; }

.kb-related { margin: 0 0 20px; }
.kb-related h3 { font-family: var(--kb-body-font); font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--kb-muted); margin: 0 0 10px; font-weight: 600; }
.kb-related a { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--kb-line); color: var(--kb-ink); font-weight: 500; }

/* ---------- help-center home ---------- */
.kb-hero { background: linear-gradient(180deg, var(--kb-accent-soft), var(--kb-bg)); padding: 64px 40px 48px; text-align: center; }
.kb-hero h1 { font-size: 46px; margin-bottom: 8px; }
.kb-hero p { color: var(--kb-body); font-size: 18px; margin-bottom: 26px; }
.kb-bigsearch { max-width: 640px; margin: 0 auto; display: flex; align-items: center; gap: 10px; height: 56px; padding: 0 8px 0 20px; border: 1px solid var(--kb-line); border-radius: 999px; background: var(--kb-surface); box-shadow: 0 8px 30px color-mix(in srgb, var(--kb-accent) 10%, transparent); color: var(--kb-muted); }
.kb-bigsearch input { flex: 1; min-width: 0; border: 0; outline: none; font: 400 17px var(--kb-body-font); color: var(--kb-ink); background: transparent; }
.kb-bigsearch .kb-ask { height: 40px; padding: 0 18px; font-size: 15px; }
.kb-suggest { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.kb-suggest button { border: 1px solid var(--kb-line); background: var(--kb-surface); border-radius: 999px; padding: 6px 14px; font: 500 13px var(--kb-body-font); color: var(--kb-body); cursor: pointer; }
.kb-answer { display: none; max-width: 640px; margin: 18px auto 0; text-align: left; background: var(--kb-surface); border: 1px solid var(--kb-line); border-radius: 16px; padding: 18px 20px; box-shadow: 0 8px 30px rgba(0,0,0,0.05); }
.kb-answer.on { display: block; }
.kb-answer-tag { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; color: var(--kb-accent); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 8px; }
.kb-answer p { color: var(--kb-ink); margin-bottom: 12px; }
.kb-answer sup { color: var(--kb-accent); font-weight: 600; }
.kb-sources { display: flex; flex-wrap: wrap; gap: 8px; }
.kb-sources a { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; background: var(--kb-tint); border: 1px solid var(--kb-line); font-size: 13px; font-weight: 500; color: var(--kb-ink); }
.kb-answer-note { font-size: 12px; color: var(--kb-muted); margin-top: 12px; }
.kb-section-h { font-family: var(--kb-head-font); font-size: 22px; font-weight: 600; color: var(--kb-ink); margin: 0 0 16px; }
.kb-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-bottom: 44px; }
.kb-card { display: block; padding: 22px; border: 1px solid var(--kb-line); border-radius: 16px; background: var(--kb-surface); color: var(--kb-body) !important; transition: border-color .15s, box-shadow .15s; }
.kb-card:hover { border-color: var(--kb-accent); box-shadow: 0 6px 20px color-mix(in srgb, var(--kb-accent) 8%, transparent); }
.kb-card-ic { width: 40px; height: 40px; border-radius: 10px; background: var(--kb-accent-soft); color: var(--kb-accent); display: grid; place-items: center; margin-bottom: 14px; }
.kb-card h3 { font-family: var(--kb-head-font); margin: 0 0 4px; font-size: 18px; color: var(--kb-ink); font-weight: 600; }
.kb-card p { margin: 0; font-size: 14px; }
.kb-card small { display: block; margin-top: 12px; font-size: 13px; color: var(--kb-muted); }
.kb-two { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 40px; }
.kb-popular a { display: flex; align-items: center; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--kb-line); color: var(--kb-ink); font-weight: 500; }
.kb-popular a .kb-icon { color: var(--kb-muted); }
.kb-popular a span { flex: 1; }
.kb-contactbox { border-radius: 16px; background: var(--kb-accent-soft); color: var(--kb-body); padding: 24px; }
.kb-contactbox h3 { font-family: var(--kb-head-font); color: var(--kb-ink); font-size: 20px; margin: 0 0 6px; }
.kb-contactbox p { font-size: 14px; margin: 0 0 16px; }
.kb-contactbox .kb-ask { height: 38px; padding: 0 18px; }

/* ---------- docs layout ---------- */
.kb-docs { display: grid; grid-template-columns: 260px minmax(0, 1fr); min-height: calc(100% - 64px); }
/* In a flex-column page (the public site), the docs area takes the leftover height so the nav tint reaches the footer. */
.kb > .kb-docs { flex: 1 0 auto; }
.kb-docnav { border-right: 1px solid var(--kb-line); background: var(--kb-tint); padding: 20px 14px 40px; font-size: 14px; }
.kb-docnav-search { display: flex; align-items: center; gap: 8px; height: 34px; padding: 0 10px; border: 1px solid var(--kb-line); border-radius: 8px; background: var(--kb-surface); color: var(--kb-muted); margin-bottom: 16px; font-size: 13px; }
.kb-docnav-group { margin-bottom: 4px; }
.kb-docnav-head { width: 100%; display: flex; align-items: center; gap: 6px; padding: 7px 8px; border: 0; background: none; border-radius: 6px; font: 600 14px var(--kb-body-font); color: var(--kb-ink); cursor: pointer; text-align: left; }
.kb-docnav-head:hover { background: var(--kb-accent-soft); }
.kb-docnav-head .kb-chevron { transition: transform .15s; color: var(--kb-muted); }
.kb-docnav-group:not(.open) > .kb-docnav-head .kb-chevron { transform: rotate(-90deg); }
.kb-docnav-group:not(.open) > .kb-docnav-list { display: none; }
.kb-docnav-list { margin: 2px 0 8px 14px; padding-left: 10px; border-left: 1px solid var(--kb-line); }
.kb-docnav-list a { display: block; padding: 6px 8px; border-radius: 6px; color: var(--kb-body); line-height: 1.35; }
.kb-docnav-list a:hover { color: var(--kb-ink); background: var(--kb-accent-soft); }
.kb-docnav-list a.on { color: var(--kb-accent); background: var(--kb-accent-soft); font-weight: 600; }
/* Nested groups (sub-collections, e.g. a product inside a category): same chevron rule, lighter head. */
.kb-docnav-sub { margin: 2px 0 0; }
.kb-docnav-sub > .kb-docnav-head { padding: 6px 8px; font-weight: 500; color: var(--kb-body); line-height: 1.35; }
.kb-docnav-sub.open > .kb-docnav-head { color: var(--kb-ink); }
.kb-docnav-sub > .kb-docnav-list { margin: 2px 0 6px 10px; }
.kb-docnav-home { display: block; padding: 7px 8px; border-radius: 6px; font-weight: 600; color: var(--kb-ink) !important; margin-bottom: 4px; }
.kb-docnav-home.on { color: var(--kb-accent) !important; background: var(--kb-accent-soft); }
.kb-docs .kb-wrap { margin: 0; max-width: 1000px; padding: 32px 48px 56px; }
.kb-docs .kb-cols { grid-template-columns: minmax(0, 1fr) 200px; gap: 40px; }
.kb-docs-home .kb-bigsearch { margin: 0; max-width: 620px; }
.kb-docs-home .kb-suggest { justify-content: flex-start; }
.kb-docs-home .kb-answer { margin: 18px 0 0; }
.kb-docs-home h1 { font-size: 40px; }
.kb-docs-home .kb-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 36px; }

/* ---------- narrow (container queries on .kb) ---------- */
@container (max-width: 1120px) {
  .kb-links { display: none !important; }
  .kb-search { width: 240px; }
}
@container (max-width: 700px) {
  .kb-head { padding: 0 16px; gap: 12px; }
  .kb-toc, .kb-head .kb-mode, .kb-docnav { display: none; }
  .kb-search { width: 38px; padding: 0; justify-content: center; }
  .kb-search input, .kb-search .kb-ask { display: none; }
  .kb-wrap, .kb-docs .kb-wrap { padding: 20px 16px 40px; }
  .kb-cols, .kb-two, .kb-docs, .kb-docs .kb-cols { grid-template-columns: 1fr; }
  .kb-cards, .kb-docs-home .kb-cards { grid-template-columns: 1fr; }
  .kb h1 { font-size: 30px; }
  .kb-hero { padding: 40px 16px 32px; }
  .kb-foot-in { flex-direction: column; align-items: flex-start; padding: 20px 16px; }
  .kb-foot-in .kb-agents { margin-left: 0; }
  .kb-helpful { flex-wrap: wrap; }
}

/* ---------- logo images (chrome.ts renderSiteHeader) ---------- */
.kb-logo-has-img { display: inline-flex; align-items: center; }
.kb-logo-img { display: block; height: 32px; width: auto; max-width: 200px; object-fit: contain; }
.kb-logo-dark { display: none; }
.kb[data-mode="dark"] .kb-logo-has-img:has(.kb-logo-dark) .kb-logo-light { display: none; }
.kb[data-mode="dark"] .kb-logo-dark { display: block; }
@media (prefers-color-scheme: dark) {
  .kb[data-mode="auto"] .kb-logo-has-img:has(.kb-logo-dark) .kb-logo-light { display: none; }
  .kb[data-mode="auto"] .kb-logo-dark { display: block; }
}
/* One logo only: it shows in both modes; in the mode it wasn't made for it sits on a chip of its own background. */
.kb-logo-only { display: block; }
.kb-logo-for-light, .kb-logo-for-dark { box-sizing: content-box; border-radius: 8px; }
.kb[data-mode="light"] .kb-logo-for-dark, .kb[data-mode="auto"] .kb-logo-for-dark { background: #1d1b1e; padding: 4px 10px; }
.kb[data-mode="dark"] .kb-logo-for-light { background: #ffffff; padding: 4px 10px; }
@media (prefers-color-scheme: dark) {
  .kb[data-mode="auto"] .kb-logo-for-dark { background: none; padding: 0; }
  .kb[data-mode="auto"] .kb-logo-for-light { background: #ffffff; padding: 4px 10px; }
}
.kb-search button.kb-ask { flex-shrink: 0; }
a.kb-ask { color: #fff; text-decoration: none; }

/* ===== apps/sites only: public-site extras on top of @clay/render/theme.css (chapter 20 brand surface) ===== */
.kb { min-height: 100vh; display: flex; flex-direction: column; }
.kb > .kb-foot { margin-top: auto; }
.kb-search { position: relative; }
.kb-instant { display: none; position: absolute; top: calc(100% + 6px); left: 0; right: 0; z-index: 20; background: var(--kb-surface); border: 1px solid var(--kb-line); border-radius: 14px; box-shadow: 0 12px 32px rgba(0,0,0,0.12); padding: 6px; }
.kb-instant.on { display: block; }
.kb-instant a { display: block; padding: 8px 10px; border-radius: 10px; color: var(--kb-ink); font-size: 14px; }
.kb-instant a:hover, .kb-instant a:focus { background: var(--kb-tint); }
.kb-instant a small { display: block; color: var(--kb-muted); font-size: 12px; }
.kb-instant-empty { display: block; padding: 8px 10px; color: var(--kb-muted); font-size: 13px; }
.kb-list-page a span small { display: block; color: var(--kb-muted); font-weight: 400; font-size: 14px; margin-top: 2px; }
.kb-list-page a span { flex: 1; min-width: 0; }
.kb-collection .kb-cards { margin: 8px 0 24px; }
.kb-search-page .kb-bigsearch { margin: 8px 0 0; }
.kb-search-page .kb-answer { margin: 18px 0 8px; }
.kb-search-page .kb-popular { margin-top: 24px; }
.kb-gate { max-width: 460px; margin: 40px auto; }
.kb-gate-form { display: flex; flex-direction: column; gap: 10px; margin-top: 18px; }
.kb-gate-form label { font-size: 14px; font-weight: 600; color: var(--kb-ink); }
.kb-gate-form input[type="password"] { height: 44px; padding: 0 14px; border: 1px solid var(--kb-line); border-radius: 12px; background: var(--kb-surface); color: var(--kb-ink); font: 400 16px var(--kb-body-font); }
.kb-gate-form input[type="password"]:focus { outline: 2px solid var(--kb-accent); outline-offset: 1px; }
.kb-gate-form .kb-ask { align-self: flex-start; height: 40px; padding: 0 18px; }
.kb-gate-error { color: var(--kb-warn); font-weight: 500; margin-top: 12px; }
.kb-404 { padding-top: 24px; }
.kb-404 .kb-bigsearch { margin: 24px 0 0; }