/* Site-local reader layer: keep the theme, authentication, and publishing rules unchanged. */
:root { --kb-anchor-offset: 78px; --kb-dock-height: 64px; }
html.kb-reader-ready { scroll-behavior: auto !important; scroll-padding-top: var(--kb-anchor-offset); }
.kb-sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip-path:inset(50%); white-space:nowrap; border:0; }
.kb-skip { position:fixed; top:8px; left:8px; z-index:500; padding:12px; background:var(--bg,#fff); transform:translateY(-160%); }
.kb-skip:focus { transform:none; }
:where(a,button,input,select,[tabindex]):focus-visible { outline:2px solid var(--accent,#2563eb); outline-offset:3px; }
.kb-button,.kb-menu-trigger,.kb-reader-bar button { font:inherit; color:var(--text,#1c1917); cursor:pointer; touch-action:manipulation; }
.kb-button { min-height:44px; padding:8px 12px; background:var(--surface,#f4f3ef); border:1px solid var(--border,#ddd); border-radius:8px; flex-shrink:0; }
.kb-button:active,.kb-menu-trigger:active { transform:translateY(1px); }
.kb-menu-trigger,.kb-reader-bar { display:none; }
[hidden] { display:none !important; }
html:not(.kb-reader-ready) .search-trigger { display:none; }
/* Header controls: the theme sizes the Graph link and Search button differently
   (inline link vs. flex button with a kbd), so give them one shared box. */
.site-nav__right { gap:8px; }
.site-nav__right :is(.graph-trigger,.search-trigger) { box-sizing:border-box; display:inline-flex; align-items:center; gap:8px; height:32px; padding:0 12px; font-family:var(--font-body); font-size:var(--font-size-sm); line-height:1; color:var(--muted); background:var(--surface); border:1px solid var(--border); border-radius:6px; text-decoration:none; }
.site-nav__right :is(.graph-trigger,.search-trigger):hover { border-color:var(--muted); color:var(--text); }
.site-nav__right .search-trigger kbd { line-height:1.4; }
html.kb-modal-open,html.kb-modal-open body { overflow:hidden; }
.kb-dialog { width:min(600px,calc(100% - 24px)); max-width:calc(100% - 24px); max-height:calc(var(--kb-viewport-height,100dvh) - 28px); padding:0; border:1px solid var(--border,#ddd); border-radius:14px; color:var(--text,#1c1917); background:var(--bg,#faf9f7); box-shadow:0 16px 60px #0003; overflow:hidden; }
.kb-dialog:not([open]) { display:none; }
.kb-dialog[open] { display:flex; flex-direction:column; }
.kb-dialog::backdrop { background:rgb(28 25 23 / 44%); }
.kb-dialog-header { display:flex; align-items:center; justify-content:space-between; gap:12px; padding:12px 16px; border-bottom:1px solid var(--border,#ddd); flex-shrink:0; }
.kb-dialog-header h2 { margin:0; font-size:1.05rem; line-height:1.4; }
.kb-dialog :is(.kb-results,.kb-links,.kb-note-content) { min-height:0; overflow-y:auto; overscroll-behavior:contain; }
.kb-links { padding:8px; }
.kb-links a { display:block; min-height:48px; padding:12px; border-radius:6px; color:var(--text); line-height:1.5; overflow-wrap:anywhere; }
.kb-links a:hover,.kb-links a[aria-current] { background:var(--surface,#f3f2ef); text-decoration:none; }
.kb-links a[aria-current] { box-shadow:inset 3px 0 var(--accent,#2563eb); font-weight:600; }
.kb-links .kb-subsection { padding-left:28px; font-size:.9rem; }
.kb-note-content { padding:18px; overflow-wrap:anywhere; }
.kb-note-content p:last-child { margin-bottom:0; }
.kb-search { margin: max(12px,6vh) auto auto; max-height:calc(var(--kb-viewport-height,100dvh) - 6vh - 24px); }
.kb-query { font:inherit; font-size:16px; width:100%; min-height:52px; padding:14px 16px; background:transparent; color:inherit; border:0; border-bottom:1px solid var(--border,#ddd); border-radius:0; flex-shrink:0; }
.kb-query:focus-visible { outline-offset:-3px; }
.kb-status { padding:10px 16px; margin:0; font-size:.875rem; color:var(--text-secondary,#57534e); flex-shrink:0; }
#kb-retry { align-self:flex-start; margin:0 16px 12px; }
.kb-results { padding:4px 8px 12px; }
.kb-result { display:block; min-height:64px; padding:12px; border-radius:6px; border-bottom:1px solid var(--border,#ddd); color:var(--text); overflow-wrap:anywhere; }
.kb-result:hover,.kb-result:focus-visible { background:var(--surface,#f3f2ef); text-decoration:none; }
.kb-result-title { display:block; font-weight:600; line-height:1.45; }
.kb-result-meta { display:block; font-size:.8rem; color:var(--text-secondary,#57534e); margin-top:4px; }
.kb-result-snippet { display:block; font-size:.875rem; line-height:1.55; margin-top:6px; color:var(--text-secondary,#57534e); }
.kb-table-wrap { max-width:100%; margin:16px 0 22px; }
.kb-table-scroll { max-width:100%; overflow-x:auto; overscroll-behavior-x:contain; border:1px solid var(--border,#ddd); border-radius:6px; }
.kb-table-scroll table { display:table !important; overflow:visible; width:100%; margin:0; }
.kb-table-hint { font-size:.8rem; color:var(--text-secondary,#57534e); margin:0 0 6px; }
.content-area pre { max-width:100%; overflow-x:auto; overscroll-behavior-x:contain; }
.content-area pre code { white-space:pre; overflow-wrap:normal; word-break:normal; }
.content-area mjx-container[display="true"] { display:block; max-width:100%; overflow-x:auto; overflow-y:hidden; padding-block:4px; overscroll-behavior-x:contain; }
.kb-series-footer { display:flex; gap:12px; justify-content:space-between; max-width:860px; margin:28px auto 8px; padding:20px 18px; border-top:1px solid var(--border,#ddd); }
.kb-series-footer a { flex:1; display:flex; flex-direction:column; gap:5px; padding:12px; min-height:48px; border-radius:8px; background:var(--surface,#f3f2ef); color:var(--text); overflow-wrap:anywhere; }
.kb-series-footer small { font-size:.8rem; color:var(--text-secondary,#57534e); }
/* Long recent-activity titles must not widen the grid past the viewport. */
.dashboard { grid-template-columns:minmax(0,1fr) 320px; }
/* The theme fades contents links in on intersection, leaving them faint on load. */
.toc-item,.toc-item.visible { opacity:1; animation:none; }
.kb-pdf-bar { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:8px; }
.kb-pdf-name { min-width:0; font-family:var(--font-mono,monospace); font-size:.8rem; color:var(--text-secondary,#57534e); overflow-wrap:anywhere; }
.kb-pdf-bar .kb-button { display:inline-flex; align-items:center; min-height:36px; text-decoration:none; }
.kb-pdf-missing { padding:12px 14px; border:1px dashed var(--border,#ddd); border-radius:8px; font-size:.875rem; color:var(--text-secondary,#57534e); overflow-wrap:anywhere; }
/* Section lists: subsections as indented groups. */
.kb-tree .kb-group { list-style:none; }
.kb-group__details > summary { list-style:none; }
.kb-group__details > summary::-webkit-details-marker { display:none; }
.kb-group__summary { display:flex; align-items:center; gap:10px; padding:12px 12px 12px 14px; border-bottom:1px solid var(--border-light,#f0efed); cursor:pointer; user-select:none; }
.kb-group__summary::before { content:''; flex-shrink:0; width:7px; height:7px; border-right:1.5px solid var(--muted,#78716c); border-bottom:1.5px solid var(--muted,#78716c); transform:rotate(-45deg); transition:transform .15s; margin-right:2px; }
.kb-group__details[open] > .kb-group__summary::before { transform:rotate(45deg); }
.kb-group__summary:hover { background:var(--hover-bg,#f5f5f3); }
.kb-group__title { font-weight:600; color:var(--text); min-width:0; overflow-wrap:anywhere; }
.kb-group__count { flex-shrink:0; font-size:var(--font-size-sm); color:var(--muted); font-variant-numeric:tabular-nums; }
.kb-group__open { margin-left:auto; flex-shrink:0; font-size:var(--font-size-sm); color:var(--muted); text-decoration:none; padding:2px 8px; border:1px solid var(--border); border-radius:6px; }
.kb-group__open:hover { color:var(--text); border-color:var(--muted); text-decoration:none; }
.kb-group__desc { margin:0; padding:6px 12px 4px 33px; font-size:var(--font-size-sm); color:var(--muted); line-height:1.55; }
.page-list .kb-group__list { max-width:none; margin:0 0 6px 18px; padding:0 0 0 0; border-left:1px solid var(--border,#e7e5e4); }
.kb-group__list[data-series] { counter-reset:kb-chapter; }
.kb-group__list[data-series] > .page-item { counter-increment:kb-chapter; }
.kb-group__list[data-series] > .page-item .page-item__title::before { content:counter(kb-chapter) ". "; color:var(--muted); font-weight:500; font-variant-numeric:tabular-nums; }
.page-list.grid-view .kb-group { grid-column:1 / -1; }
.page-list.grid-view .kb-group__list { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:var(--space-md,1rem); padding:8px 0 8px 12px; }
.kb-pill-count { margin-left:2px; opacity:.6; font-variant-numeric:tabular-nums; }
.kb-pill-more { border-style:dashed; color:var(--text-secondary,#57534e); }
.kb-result mark { background:#fde68a; color:inherit; border-radius:2px; padding:0 1px; }
@media (max-width:900px) {
  :root { --nav-height:58px; }
  .site-nav { gap:8px; padding:8px max(16px,env(safe-area-inset-right)) 8px max(16px,env(safe-area-inset-left)); min-height:58px; height:auto; }
  .site-nav__left { min-width:0; flex:1; gap:8px; }
  .site-nav__title { display:block; min-width:0; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; font-size:1rem; line-height:1.3; }
  .site-nav__right { gap:6px; flex-shrink:0; }
  .site-nav .search-trigger { min-height:44px; padding:8px 10px; font:inherit; font-size:.875rem; color:var(--text); border-radius:8px; }
  .site-nav kbd { display:none; }
  .kb-reader-ready .site-nav__links,.kb-reader-ready .site-nav__right .graph-trigger { display:none; }
  .kb-reader-ready .kb-menu-trigger { display:inline-flex; align-items:center; min-height:44px; padding:8px 10px; border:1px solid var(--border,#ddd); border-radius:8px; background:var(--surface,#f3f2ef); font-size:.875rem; }
  html:not(.kb-reader-ready) .site-nav__left { flex-wrap:wrap; }
  html:not(.kb-reader-ready) .site-nav__links { width:100%; overflow-x:auto; padding-block:8px; }
  .three-col { display:block; }
  .content-area,.content-area.expanded { width:100%; max-width:100%; min-width:0; padding:0 max(18px,env(safe-area-inset-right)) 0 max(18px,env(safe-area-inset-left)); font-size:1.0625rem; line-height:1.75; }
  .content-area :is(h1,h2,h3,h4,p,li,.page-meta) { overflow-wrap:anywhere; }
  .content-area h2 { font-size:1.4rem; line-height:1.35; margin:2rem 0 .85rem; text-wrap:balance; }
  .content-area h3 { font-size:1.125rem; line-height:1.4; }
  .content-area :is(ul,ol) { padding-left:1.4em; }
  .content-area li+li { margin-top:.4em; }
  .content-area :is(img,video,iframe,object,embed) { max-width:100% !important; }
  .content-area figure { margin-inline:0; }
  .content-area .js-plotly-plot { max-width:100%; overflow-x:auto; overflow-y:hidden; overscroll-behavior-x:contain; }
  .content-area .page-meta { line-height:1.8; }
  .content-area .tag-pill { display:inline-flex; align-items:center; min-height:32px; padding:4px 10px; white-space:normal; }
  .breadcrumbs { overflow-wrap:anywhere; line-height:1.7; }
  .page-nav { flex-wrap:wrap; gap:8px; padding:12px 18px; }
  .page-nav__title { order:-1; flex:1 0 100%; text-align:left; min-width:0; }
  .page-nav__title h1 { font-size:clamp(1.5rem,5vw,2rem); line-height:1.25; overflow-wrap:anywhere; }
  .page-nav__back { flex:1 1 auto; text-align:left; }
  .page-nav__siblings { flex:1 1 auto; justify-content:flex-end; gap:12px; }
  .page-nav a { display:inline-flex; align-items:center; min-height:44px; padding-inline:6px; }
  .kb-has-contents .toc-sidebar { display:none !important; }
  .notes-sidebar { width:100%; padding:16px 18px; overflow:visible !important; }
  .notes-sidebar .footnote-wrapper { position:static !important; inset:auto !important; margin:8px 0; opacity:1 !important; transform:none !important; }
  .kb-has-endnotes .notes-sidebar { display:none !important; }
  .content-area .footnotes[role="doc-endnotes"] { display:block !important; margin-top:2rem; font-size:.875rem; }
  .content-area :is(.footnote-ref,[role="doc-noteref"]) { display:inline-block; padding:4px 6px; min-width:26px; text-align:center; }
  .kb-table-scroll .kb-wide-table { min-width:36rem; }
  .kb-table-scroll :is(td,th) { overflow-wrap:normal; font-size:.9rem; line-height:1.6; }
  .dashboard { grid-template-columns:minmax(0,1fr); gap:24px; padding:24px 16px; }
  .recent-item__title,.page-item__subtitle { white-space:normal; overflow:visible; }
  .recent-item { padding-block:12px; }
  .list-header,.page-list { padding-inline:16px; }
  .list-controls { flex-wrap:wrap; }
  .list-controls :is(button,select),.filter-pill { min-height:44px; }
  .page-item { flex-wrap:wrap; padding:14px 12px; }
  .page-item__body { flex-basis:100%; min-width:0; }
  .page-item__meta { flex-wrap:wrap; }
  .page-item__date { margin-left:0; }
  .page-list.grid-view { grid-template-columns:minmax(0,1fr); }
  .page-list .kb-group__list { margin-left:10px; }
  .kb-group__summary { flex-wrap:wrap; min-height:48px; padding-inline:10px; }
  .kb-group__desc { padding-left:28px; }
  .page-list.grid-view .kb-group__list { grid-template-columns:minmax(0,1fr); padding-left:8px; }
  /* One swipeable row per facet instead of two screens of wrapped chips. */
  .papers-filters { padding-inline:16px; }
  .papers-filter-row { align-items:center; }
  .papers-filter-pills,.list-filter-bar { flex-wrap:nowrap; overflow-x:auto; overscroll-behavior-x:contain; scrollbar-width:none; padding-block:2px; }
  .papers-filter-pills::-webkit-scrollbar,.list-filter-bar::-webkit-scrollbar { display:none; }
  .papers-filter-pills .filter-pill,.list-filter-bar .filter-pill { flex-shrink:0; min-height:40px; white-space:nowrap; }
  .kb-pdf-frame { display:none; }
  .tag-grid { grid-template-columns:repeat(2,minmax(0,1fr)); gap:8px; padding:16px; }
  .tag-card { min-height:44px; padding:8px 12px; gap:8px; overflow-wrap:anywhere; }
  .kb-pdf-bar .kb-button { min-height:44px; }
  .kb-sheet { margin:auto auto 0; width:100%; max-width:100%; max-height:min(78dvh,calc(var(--kb-viewport-height,100dvh) - 16px)); border-radius:16px 16px 0 0; padding-bottom:env(safe-area-inset-bottom); }
  .kb-search { margin:10px auto auto; max-height:calc(var(--kb-viewport-height,100dvh) - 20px); }
  .kb-has-contents body { padding-bottom:calc(var(--kb-dock-height) + env(safe-area-inset-bottom) + 16px); }
  html.kb-has-contents { scroll-padding-bottom:calc(var(--kb-dock-height) + env(safe-area-inset-bottom) + 16px); }
  .kb-reader-bar:not([hidden]) { position:fixed; inset:auto 0 0; z-index:110; display:flex; align-items:stretch; gap:4px; padding:5px max(12px,env(safe-area-inset-right)) calc(5px + env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left)); background:var(--bg,#faf9f7); border-top:1px solid var(--border,#ddd); box-shadow:0 -4px 20px #00000008; }
  .kb-reader-bar button { min-height:48px; min-width:52px; padding:6px 9px; border:0; border-radius:5px; background:transparent; font-size:.875rem; }
  .kb-reader-bar button:hover { background:var(--surface,#f3f2ef); }
  .kb-reader-bar .kb-contents-trigger { flex:1; min-width:0; text-align:left; }
  .kb-tool-title { display:block; font-weight:600; }
  #kb-percent { font-size:.75rem; margin-left:6px; font-variant-numeric:tabular-nums; font-weight:400; }
  #kb-current-section { display:block; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; font-size:.75rem; color:var(--text-secondary,#57534e); line-height:1.6; }
  #kb-progress { position:absolute; inset:-2px 0 auto; height:2px; overflow:hidden; }
  #kb-progress::after { content:''; display:block; height:100%; background:var(--accent,#2563eb); transform:scaleX(var(--progress,0)); transform-origin:left; }
  .toc-item,.footnote-wrapper,img.lazy-load { opacity:1 !important; transform:none !important; transition-delay:0ms !important; }
}
@media (prefers-reduced-motion:reduce) {
  html { scroll-behavior:auto !important; }
  .kb-button,.kb-reader-bar button,.toc-item,.footnote-wrapper,.lazy-load { animation:none !important; transition:none !important; opacity:1 !important; transform:none !important; }
}
@media print {
  .kb-dialog,.kb-reader-bar,.kb-skip,.kb-menu-trigger,.kb-table-hint,.kb-series-footer { display:none !important; }
  .kb-has-contents body { padding-bottom:0 !important; }
  .kb-table-scroll { overflow:visible; border:0; }
  .kb-table-scroll .kb-wide-table { min-width:0; }
}