/* Read-only Cornell Board pages. Import only when the Workspace integration is ready. */
.cornell-workspace {
  --cornell-paper: var(--board-paper);
  --cornell-ink: var(--ink);
  --cornell-muted: var(--muted);
  --cornell-border: var(--board-border);
  --cornell-focus: var(--accent-strong);
  /* 笔记纸比全站的 --marker-soft 深一档，纸里的荧光标记和引用底色跟着加深；只在纸的范围内生效 */
  --marker-soft: var(--board-marker);
  --cornell-warm: var(--marker-soft);
  --note-blue: var(--accent-strong);
  --note-green: var(--success);
  --note-amber: var(--marker-ink);
  --note-red: var(--danger);
  --note-violet: var(--map-branch-4);
  color: var(--cornell-ink);
  background: var(--cornell-paper);
  font-family: var(--font-sans);
  min-width: 0;
  container-type: inline-size;
}

.cornell-workspace__status {
  min-height: 1.5em;
  margin: 0;
  padding: 8px 16px;
  color: var(--cornell-muted);
  font-size: var(--fs-ui);
}

.cornell-workspace__status:empty { display: none; }
.cornell-workspace__status--notice { background: var(--cornell-warm); }
.cornell-workspace__status--error { background: var(--danger-soft); color: var(--danger); }

.cornell-workspace__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  min-height: 0;
  border-top: 1px solid var(--cornell-border);
  max-width: 1080px;
  margin-inline: auto;
  align-items: start;
}

.cornell-workspace__nav {
  border-right: 1px solid var(--cornell-border);
  padding: 12px;
  overflow: auto;
  background: var(--cornell-paper);
}

.cornell-workspace__page-index-summary {
  color: var(--cornell-muted);
  cursor: pointer;
  font-size: var(--fs-caption);
  line-height: 1.45;
}
.cornell-workspace__page-index[open] .cornell-workspace__page-index-summary { margin-bottom: 8px; }

.cornell-workspace__nav-list,
.cornell-workspace__list,
.cornell-workspace__sources {
  margin: 0;
  padding: 0;
  list-style: none;
}

.cornell-workspace__nav-list { display: grid; gap: 4px; }

.cornell-workspace__nav-button,
.cornell-workspace__source,
.cornell-workspace__pager-button,
.cornell-workspace__review-action {
  width: 100%;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  background: transparent;
  color: inherit;
  cursor: pointer;
  font: inherit;
  line-height: 1.45;
  text-align: left;
}

.cornell-workspace__nav-button { padding: 6px 8px; font-size: var(--fs-caption); }
.cornell-workspace__nav-button[aria-current="page"] { background: var(--accent-soft); border-color: var(--accent-soft); color: var(--accent-strong); font-weight: 600; }
.cornell-workspace__nav-button:hover { background: var(--surface-subtle); }

.cornell-workspace__pager {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 0;
  padding: 7px 0;
  color: var(--cornell-muted);
  font-size: var(--fs-caption);
  line-height: 1.4;
}
.cornell-workspace__pager--top { grid-row: 1; order: -1; border-bottom: 1px solid var(--cornell-border); }
.cornell-workspace__pager--bottom { grid-row: 5; order: 4; border-top: 1px solid var(--cornell-border); }
.cornell-workspace__pager-button { width: 32px; height: 32px; flex: none; padding: 0; color: var(--cornell-focus); font-size: var(--fs-h2); line-height: 1; text-align: center; }
.cornell-workspace__pager-button:hover:not(:disabled) { background: var(--accent-soft); }
.cornell-workspace__pager-button:disabled { color: var(--cornell-muted); cursor: default; opacity: .45; }
.cornell-workspace__pager-current { min-width: 0; overflow-wrap: anywhere; color: var(--cornell-ink); text-align: center; }
.cornell-workspace__pager-separator { color: var(--cornell-border); }

.cornell-workspace__page { min-width: 0; padding: clamp(14px, 2vw, 24px); overflow-x: hidden; }
.cornell-workspace__page-header { border-bottom: 1px solid var(--cornell-border); padding-bottom: 10px; }
.cornell-workspace__eyebrow { margin: 0 0 3px; color: var(--cornell-muted); font-size: var(--fs-caption); }
.cornell-workspace__page-title {
  margin: 0;
  font-family: ui-serif, Georgia, Cambria, "STKaiti", "KaiTi", serif;
  font-size: var(--fs-h2);
  line-height: 1.3;
}

.cornell-note {
  display: grid;
  grid-template-columns: minmax(6.25rem, 7.75rem) minmax(0, 1fr);
  grid-template-rows: auto auto 1fr auto auto;
  column-gap: clamp(18px, 2.5vw, 28px);
}
.cornell-note .cornell-workspace__page-header { grid-column: 2; grid-row: 2; }
.cornell-workspace__body { display: contents; }
.cornell-sidebar {
  grid-column: 1;
  grid-row: 2 / 4;
  align-self: stretch;
  padding: 4px clamp(12px, 2vw, 18px) 16px 0;
  border-right: 1px solid var(--cornell-border);
}
.cornell-main { grid-column: 2; grid-row: 3; min-width: 0; padding: 14px 0 20px; }
.cornell-workspace__section-title { margin: 0 0 8px; font-size: var(--fs-caption); line-height: 1.45; }
.cornell-main > .cornell-workspace__section-title { color: var(--cornell-focus); font-size: var(--fs-ui); font-weight: 600; }
.cornell-sidebar > .cornell-workspace__section-title { color: var(--cornell-muted); font-size: var(--fs-ui); }
.cornell-workspace__cue-group + .cornell-workspace__cue-group { margin-top: 14px; }
.cornell-workspace__cue-group > .cornell-workspace__section-title { color: var(--cornell-focus); font-size: var(--fs-ui); font-weight: 600; }
.cornell-workspace__list { display: grid; gap: 8px; color: var(--cornell-muted); font-size: var(--fs-ui); line-height: 1.55; }
.cornell-workspace__list li { position: relative; padding-left: 1rem; }
.cornell-workspace__list li::before { position: absolute; left: 0; content: "•"; color: var(--faint); }
.cornell-sidebar .cornell-workspace__list li { padding-left: 0; }
.cornell-sidebar .cornell-workspace__list li::before { content: none; }
.cornell-workspace__notes-list { display: grid; gap: 8px; max-width: none; font-size: var(--fs-ui); line-height: 1.55; }
.cornell-workspace__note { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; }
/* Shared Markdown typography lives in reading-content.css. */
.cornell-math--display { max-width: 100%; margin: 16px 0; overflow-x: auto; text-align: center; }
.cornell-rich-content span.cornell-math--inline,
.cornell-rich-content code.cornell-math--inline { display: inline; margin: 0 .14em; white-space: normal; text-align: inherit; }
.cornell-rich-content span.cornell-math--inline .katex,
.cornell-rich-content code.cornell-math--inline .katex { display: inline; }
.cornell-math--fallback { font-family: var(--font-mono); }
.cornell-outline,
.note-outline { margin: 0 0 12px; padding: 9px 11px; border: 1px solid var(--cornell-border); border-radius: var(--r-sm); background: var(--surface); }
.cornell-outline__title { display: block; margin-bottom: 4px; font-size: var(--fs-caption); }
.cornell-outline ol { display: grid; gap: 5px; margin: 0; padding: 0; list-style: none; }
.cornell-outline__item { line-height: 1.45; }
.cornell-outline__item--2 { padding-left: 14px; }
.cornell-outline__item--3,
.cornell-outline__item--4 { padding-left: 28px; }
.cornell-outline a { color: var(--cornell-muted); font-size: var(--fs-ui); text-decoration: none; }
.cornell-outline a:hover { color: var(--cornell-focus); text-decoration: underline; text-underline-offset: 3px; }
.note-outline ol { display: grid; gap: 3px; margin: 4px 0 0; padding-left: 1.1rem; color: var(--cornell-muted); font-size: var(--fs-caption); }
.note-grid { display: grid; gap: 8px; margin: 8px 0; }
.note-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.note-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.note-card { min-width: 0; padding: 4px 10px; border: 0; border-left: 2px solid var(--cornell-border); border-radius: 0; background: transparent; }
.note-card > :first-child { margin-top: 0; }
.note-card > :last-child { margin-bottom: 0; }
.note-section > p,
.note-section > ul,
.note-section > ol { max-width: 76ch; }
.note-label { display: inline-block; margin-bottom: 4px; color: var(--note-accent, var(--accent-strong)); font-size: var(--fs-caption); font-weight: 600; }
.note-icon { display: inline-grid; width: 1.55rem; height: 1.55rem; margin: 0 .38rem .2rem 0; place-items: center; border-radius: 50%; background: var(--accent-soft); color: var(--accent-strong); font-size: var(--fs-ui); vertical-align: middle; }
.note-icon[data-icon="idea"]::before { content: "✦"; }
.note-icon[data-icon="warning"]::before { content: "!"; font-weight: 600; }
.note-icon[data-icon="formula"]::before { content: "∑"; }
.note-icon[data-icon="chart"]::before { content: "↗"; }
.note-icon[data-icon="link"]::before { content: "→"; }
.note-icon[data-icon="example"]::before { content: "例"; font-size: var(--fs-caption); font-weight: 600; }
.note-muted { color: var(--cornell-muted); }
.note-checklist { padding-left: 1.2rem; list-style: "✓  "; }
.note-section + .note-section { margin-top: 12px; }
.note-definition,
.note-derivation { margin: 8px 0; padding: 9px 10px; border-left: 3px solid var(--note-accent); border-radius: var(--r-sm); background: var(--note-tint); }
.note-definition { --note-accent: var(--note-blue); --note-tint: var(--accent-soft); }
.note-derivation { --note-accent: var(--note-green); --note-tint: var(--success-soft); }
.note-example,
.note-tip,
.note-warning,
.note-question,
.note-annotation,
.note-weakness,
.note-clue { margin: 8px 0; padding: 8px 10px; border-radius: var(--r-sm); border-left: 3px solid var(--note-accent); }
.note-example { --note-accent: var(--note-green); background: var(--success-soft); }
.note-tip { --note-accent: var(--note-blue); background: var(--accent-soft); }
.note-warning,
.note-clue { --note-accent: var(--note-amber); background: var(--cornell-warm); }
.note-question { --note-accent: var(--note-blue); background: var(--accent-soft); }
.note-annotation { --note-accent: var(--note-violet); background: color-mix(in srgb, var(--note-violet) 10%, var(--cornell-paper)); }
.note-weakness { --note-accent: var(--note-red); background: var(--danger-soft); }
/* 笔记模型会把提示框类名写在 <span>/<strong> 这类行内元素上；行内元素的上下内边距不撑开行高，
   每行的底色会盖住上一行文字。行内时按逐行高亮排：去掉上下内边距和左边线，每行各自带底色。 */
:is(span, strong, em, mark, code):is(.note-example, .note-tip, .note-warning, .note-question, .note-annotation, .note-weakness, .note-clue, .note-definition, .note-derivation) {
  margin: 0;
  padding: 0 2px;
  border-left: 0;
  border-radius: var(--r-xs);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}
.cornell-diagram,
.note-diagram { display: grid; gap: 6px; min-width: 0; max-width: 100%; margin: 10px 0; padding: 10px; overflow-x: auto; border: 1px solid var(--cornell-border); border-radius: var(--r-sm); background: var(--surface); }
.cornell-diagram__row,
.note-diagram-row { display: flex; align-items: center; gap: 6px; min-width: max-content; }
.cornell-diagram__node,
.note-diagram-node { max-width: 15rem; padding: 6px 9px; border: 1px solid var(--cornell-border); border-radius: var(--r-sm); background: var(--cornell-paper); font-size: var(--fs-caption); line-height: 1.4; text-align: center; }
.cornell-diagram__arrow,
.note-diagram-arrow { color: var(--marker-ink); font-weight: 600; }
/* 笔记里的图示与阅读栏同一规则（t-20261009-scn2）：图本身 1px 边、白纸，图注裸排在图下 */
.cornell-canvas-asset { margin: 12px 0; }
.cornell-canvas-asset :is(img, .cornell-canvas-asset-frame) {
  display: block;
  box-sizing: border-box;
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  /* 白纸：图示是固定纸色的印刷图，深浅色下都不反色（与课件原页同规则） */
  background: #fff;
}
[data-theme="dark"] .cornell-canvas-asset :is(img, .cornell-canvas-asset-frame) { border-color: var(--border-strong); }
.cornell-canvas-asset img { height: auto; max-height: 34rem; object-fit: contain; }
.cornell-canvas-asset-frame { width: 100%; height: 26rem; }
.cornell-canvas-asset figcaption { margin-top: 6px; color: var(--faint); font: 400 var(--fs-caption)/1.5 var(--font-sans); }
.cornell-canvas-asset figcaption strong { color: var(--ink); font-weight: 600; }
.cornell-rich-content svg { display: block; width: auto; max-width: min(100%, 600px); height: auto; margin: 14px auto; color: var(--cornell-ink); }
.cornell-rich-content sup { display: inline-grid; min-width: 1.35em; min-height: 1.35em; place-items: center; border: 1px solid var(--marker); border-radius: var(--r-pill); color: var(--cornell-ink); font-size: var(--fs-caption); line-height: 1; vertical-align: .35em; }
.cornell-workspace__source-disclosure { margin-top: 10px; color: var(--cornell-muted); }
.cornell-workspace__source-summary { width: fit-content; cursor: pointer; font-size: var(--fs-caption); line-height: 1.5; }
.cornell-workspace__source-disclosure[open] .cornell-workspace__source-summary { margin-bottom: 5px; }
.cornell-workspace__sources { display: flex; flex-wrap: wrap; gap: 5px; }
.cornell-workspace__source { width: auto; padding: 4px 6px; border-color: var(--cornell-border); color: var(--cornell-focus); font-size: var(--fs-caption); text-decoration: underline; text-underline-offset: 2px; }
.cornell-workspace__source:hover { background: var(--surface-subtle); }

.cornell-summary { grid-column: 1 / -1; grid-row: 4; border-top: 1px solid var(--cornell-border); padding: 12px 0 3px; }
.cornell-summary > .cornell-workspace__section-title { color: var(--cornell-focus); }
.cornell-summary > .cornell-workspace__list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 18px; color: var(--cornell-ink); }
.cornell-summary > .cornell-workspace__list > li { min-width: 0; padding: 8px 10px 8px 1.5rem; border-left: 2px solid var(--marker); }
.cornell-workspace__personal-experience { margin-top: 10px; padding: 9px 11px; border-radius: var(--r-sm); background: var(--cornell-warm); }
.cornell-workspace__note-annotation { display: block; margin-top: 2px; color: var(--cornell-muted); white-space: pre-wrap; }
.cornell-workspace__review-action { padding: 7px 9px; border: 1px solid transparent; border-radius: var(--r-sm); background: transparent; color: var(--cornell-ink); cursor: pointer; }
.cornell-workspace__review-action:hover,
.cornell-workspace__review-action:focus-visible { border-color: var(--cornell-border); background: var(--surface-subtle); outline: none; }
.cornell-workspace__review-action p { margin: 0; }

@container (min-width: 64rem) {
  .cornell-note { grid-template-columns: minmax(10rem, 11.5rem) minmax(0, 1fr); }
}

@container (max-width: 52rem) {
  .note-grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@container (max-width: 32rem) {
  .note-grid-2,
  .note-grid-3 { grid-template-columns: 1fr; }
  .cornell-summary > .cornell-workspace__list { grid-template-columns: 1fr; }
}

.cornell-advisor-footer {
  --cornell-paper: var(--board-paper);
  --cornell-ink: var(--ink);
  --cornell-muted: var(--muted);
  --cornell-border: var(--board-border);
  --advisor-surface: var(--surface);
  --advisor-min-width: 300px;
  --advisor-min-height: 260px;
  position: absolute;
  left: 18px;
  bottom: 18px;
  z-index: 12;
  color: var(--cornell-ink);
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: min(740px, calc(100% - 36px));
  height: min(690px, calc(100% - 36px));
  max-width: calc(100% - 36px);
  max-height: calc(100% - 36px);
  min-width: 0;
  box-sizing: border-box;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--surface);
  box-shadow: var(--shadow-pop);
  font-family: var(--font-sans);
  animation: note-agent-float-in 180ms cubic-bezier(.2,.8,.2,1);
}
.cornell-advisor-footer[hidden] { display: none; }
/* 笔记助手挪到右栏笔记标签 #pane-board（旧 .board-doc 停用隐藏）：纸色与线色沿用 .board-doc 那一组（study-paper.css、reading-content.css） */
#pane-board { position: relative; }
#pane-board > .note-agent-launcher { --border: var(--reading-rule); }
#pane-board > .cornell-advisor-footer {
  --board-paper: var(--reading-paper);
  --board-border: var(--reading-rule);
  --border: var(--board-border);
  --border-strong: var(--board-border);
  --marker-soft: var(--board-marker);
  --cornell-paper: var(--board-paper);
  --cornell-border: var(--board-border);
  --cornell-focus: var(--accent-strong);
  --cornell-warm: var(--marker-soft);
  --note-blue: var(--accent-strong);
  --note-green: var(--success);
  --note-amber: var(--marker-ink);
  --note-red: var(--danger);
  background: var(--board-paper);
}
.cornell-advisor-footer.is-user-sized { min-width: min(var(--advisor-min-width, 300px), calc(100% - 36px)); min-height: min(var(--advisor-min-height, 260px), calc(100% - 36px)); }
/* The bottom edge stays anchored; only the history area collapses. */
.cornell-advisor-footer:not(.is-history-expanded) { height: auto !important; min-height: 0 !important; }
.cornell-advisor-footer.is-resizing { user-select: none; }
@keyframes note-agent-float-in { from { opacity: 0; transform: translateY(10px) scale(.98); } to { opacity: 1; transform: none; } }

.note-agent-launcher {
  position: absolute;
  left: 18px;
  bottom: 18px;
  z-index: 10;
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid color-mix(in srgb, var(--accent) 32%, var(--border));
  border-radius: 50%;
  background: var(--surface);
  color: var(--accent-strong);
  box-shadow: var(--shadow-pop);
  cursor: pointer;
}
.note-agent-launcher:hover { transform: translateY(-1px); border-color: var(--accent); }
.note-agent-launcher:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.note-agent-launcher svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.cornell-advisor-footer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-width: 0;
}

.cornell-advisor-footer__head h3,
.cornell-preference-panel h4 { margin: 0; line-height: 1.4; }
.cornell-advisor-footer__head h3 { font-size: var(--fs-ui); font-weight: 600; }
.cornell-advisor-footer__actions { display: flex; align-items: center; gap: 6px; }
.cornell-advisor-resize { position: absolute; top: -1px; right: -1px; z-index: 1; display: inline-grid; place-items: center; width: 24px; height: 24px; padding: 0; border: 0; border-radius: 0 var(--r-md) 0 0; background: transparent; color: var(--cornell-muted); opacity: .5; cursor: nesw-resize; touch-action: none; }
.cornell-advisor-resize:hover, .cornell-advisor-resize:focus-visible { opacity: 1; color: var(--accent); background: var(--surface-subtle); }
.cornell-advisor-resize:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.cornell-advisor-resize svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; }
.cornell-advisor-close { display: inline-grid; place-items: center; width: 28px; height: 28px; padding: 0; border: 0; border-radius: 50%; background: transparent; color: var(--cornell-muted); cursor: pointer; }
.cornell-advisor-close:hover { background: var(--surface-subtle); color: var(--cornell-ink); }
.cornell-advisor-close svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }

.cornell-advisor-history-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 28px;
  min-height: 28px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--surface-subtle);
  color: var(--cornell-muted);
  cursor: pointer;
  font: inherit;
  font-size: var(--fs-caption);
  line-height: 1;
}
.cornell-advisor-history-toggle:hover { border-color: var(--border-strong); color: var(--cornell-ink); }
.cornell-advisor-history-toggle svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform 140ms ease; }
.cornell-advisor-history-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }

.cornell-advisor-history {
  display: grid;
  gap: 8px;
  flex: 1 1 auto;
  min-height: 0;
  max-height: none;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--advisor-surface);
}
.cornell-advisor-history[hidden] { display: none; }
.cornell-advisor-history__tools { display: flex; justify-content: flex-end; }

.cornell-preference-panel {
  display: grid;
  gap: 9px;
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--cornell-border);
  border-radius: var(--r-sm);
  background: var(--surface);
}
.cornell-preference-panel[hidden] { display: none; }
.cornell-preference-panel label,
.cornell-advisor-compose label { font-weight: 600; line-height: 1.5; }
.cornell-preference-panel textarea,
.cornell-advisor-compose textarea { width: 100%; min-width: 0; resize: vertical; }
.cornell-preference-panel__actions,
.cornell-advisor-compose__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.cornell-preference-panel__actions { justify-content: flex-end; }
.cornell-preference-panel .caption,
.cornell-advisor-status { min-height: 1.5em; margin: 0; color: var(--cornell-muted); line-height: 1.5; }
.cornell-advisor-status:empty { display: none; }
.cornell-advisor-status[data-kind="failure"] { color: var(--danger); }

.cornell-advisor-thread {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}
.cornell-advisor-thread:empty { display: none; }
.advisor-msg { overflow-wrap: anywhere; }
.advisor-msg-user { align-self: flex-end; max-width: 90%; padding: 8px 12px; background: var(--surface-subtle); border-radius: var(--r-md); font-size: var(--fs-ui); line-height: 1.6; }
.advisor-msg-assistant { align-self: stretch; max-width: 100%; }
.advisor-msg-assistant .klogo-sm { margin-top: 3px; }
.advisor-msg-assistant .aside-answer { margin-top: 0; }
.advisor-suggestion { display: grid; gap: 6px; margin: 2px 0; padding: 7px 8px; border: 1px solid var(--cornell-border); border-radius: var(--r-sm); background: var(--cornell-paper); }
.advisor-suggestion-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.advisor-suggestion-head strong { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: var(--fs-caption); font-weight: 600; }
.advisor-suggestion-preview { margin: 0; font-size: var(--fs-ui); line-height: 1.6; white-space: pre-wrap; }
.advisor-suggestion-actions { display: flex; align-items: center; justify-content: flex-end; gap: 5px; flex-wrap: wrap; }
.advisor-suggestion-actions .btn-sm { min-height: 26px; padding: 3px 10px; border-radius: var(--r-pill); font-size: var(--fs-caption); }
.advisor-suggestion.is-resolved { display: none; }
.advisor-suggestion.is-resolved .advisor-suggestion-head { flex-wrap: nowrap; }
.advisor-suggestion.is-resolved .advisor-suggestion-preview { display: none; }
.advisor-suggestion-error { margin: 0; color: var(--danger); font-size: var(--fs-caption); line-height: 1.5; }
.cornell-workspace__page-header { position: relative; }
.cornell-workspace__pending-label { display: inline-flex; width: fit-content; margin-top: 7px; padding: 2px 8px; border: 1px solid var(--marker); border-radius: var(--r-pill); background: var(--marker-soft); color: var(--marker-ink); font-size: var(--fs-caption); font-weight: 600; }
.cornell-workspace__pending-change { border-radius: var(--r-sm); outline: 2px solid color-mix(in srgb, var(--marker) 60%, transparent); outline-offset: 3px; }
.cornell-workspace__pending-change[data-pending-change="delete"] { opacity: .62; outline-color: color-mix(in srgb, var(--danger) 52%, transparent); }
.cornell-advisor-compose { flex: none; min-width: 0; background: var(--advisor-surface); }
.cornell-advisor-compose textarea { width: 100%; min-height: 24px; max-height: 180px; padding: 0; font-size: var(--fs-ui); line-height: 1.6; resize: none; }
.cornell-advisor-compose .btn { flex: none; }

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.cornell-workspace__empty { padding: clamp(24px, 5vw, 48px); }
.cornell-workspace__empty-title { margin: 0 0 8px; font-size: var(--fs-h2); font-weight: 600; }
.cornell-workspace__empty-copy { margin: 0; color: var(--cornell-muted); line-height: 1.7; }

.cornell-workspace button:focus-visible { outline: 3px solid var(--cornell-focus); outline-offset: 2px; }

/* The Board often lives in a resizable side pane. Its own width, rather than
   the browser viewport, decides when a narrow Cornell rail must stack. */
@container (max-width: 48rem) {
  .cornell-workspace__layout { grid-template-columns: 1fr; }
  .cornell-workspace__nav { border-right: 0; border-bottom: 1px solid var(--cornell-border); }
  .cornell-workspace__nav-list { display: flex; overflow-x: auto; padding-bottom: 4px; }
  .cornell-workspace__nav-list li { flex: 0 0 auto; }
  .cornell-workspace__nav-button { white-space: nowrap; }
}

@container (max-width: 40rem) {
  .cornell-note { display: flex; flex-direction: column; }
  .cornell-note .cornell-workspace__page-header { padding-bottom: 9px; }
  .cornell-main { order: 1; padding: 14px 0; }
  .cornell-sidebar { order: 2; border-top: 1px solid var(--cornell-border); border-right: 0; border-bottom: 0; padding: 12px 0; }
  .cornell-summary { order: 3; }
}

@media (max-width: 1023px) {
  .cornell-workspace__layout { grid-template-columns: 1fr; }
  .cornell-workspace__nav { border-right: 0; border-bottom: 1px solid var(--cornell-border); }
  .cornell-workspace__nav-list { display: flex; overflow-x: auto; padding-bottom: 4px; }
  .cornell-workspace__nav-list li { flex: 0 0 auto; }
  .cornell-workspace__nav-button { white-space: nowrap; }
}

@media (max-width: 767px) {
  .cornell-workspace__page { padding: 14px; }
  .cornell-note { display: flex; flex-direction: column; }
  .cornell-main { order: 1; padding: 14px 0; }
  .cornell-sidebar { order: 2; border-top: 1px solid var(--cornell-border); border-right: 0; border-bottom: 0; padding: 12px 0; }
  .cornell-summary { order: 3; }
  .cornell-workspace__sources { display: grid; }
  .cornell-workspace__source { width: 100%; }
  .cornell-summary > .cornell-workspace__list { grid-template-columns: 1fr; }
  .cornell-advisor-footer {
    --advisor-min-width: 280px;
    --advisor-min-height: 240px;
    left: 12px;
    bottom: 12px;
    width: calc(100% - 24px);
    max-width: calc(100% - 24px);
    max-height: calc(100% - 24px);
    padding: 10px;
  }
  .cornell-advisor-footer.is-history-expanded { height: min(430px, calc(100% - 24px)); }
  .cornell-advisor-footer.is-user-sized { min-width: min(var(--advisor-min-width, 280px), calc(100% - 24px)); min-height: min(var(--advisor-min-height, 240px), calc(100% - 24px)); }
  .note-agent-launcher { left: 12px; bottom: 12px; }
  .board-scroll-area { min-height: min(42dvh, 320px); }
}

@media (prefers-reduced-motion: reduce) {
  .cornell-workspace *, .cornell-workspace *::before, .cornell-workspace *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
  .cornell-advisor-footer *, .cornell-advisor-footer *::before, .cornell-advisor-footer *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}

/* Reading width stays stable when the right pane becomes the full workspace. */
body.board-focus-mode .board-scroll-area > * { width: 100%; max-width: 1080px; margin-inline: auto; box-sizing: border-box; }
body.board-focus-mode .cornell-advisor-footer:not(.is-user-sized) { width: min(360px, calc(100% - 36px)); box-sizing: border-box; }
.board-head-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; flex: 0 1 auto; min-width: 0; }
.board-head { align-items: center; flex-wrap: wrap; }
.cornell-workspace__tools { display: flex; align-items: center; gap: 4px; padding: 0; flex: none; }
.cornell-workspace__tool { border: 1px solid var(--cornell-border); border-radius: var(--r-pill); padding: 2px 10px; background: var(--cornell-paper); color: var(--cornell-ink); font: inherit; font-size: var(--fs-caption); font-weight: 600; cursor: pointer; min-height: 26px; white-space: nowrap; }
.cornell-workspace__tool:hover { background: var(--cornell-warm); }
.cornell-workspace__tool:disabled { cursor: progress; opacity: .6; }
.notes-preview { box-sizing: border-box; width: min(1200px, calc(100vw - 32px)); max-width: none; height: calc(100dvh - 32px); max-height: none; padding: 0; border: 1px solid var(--cornell-border); border-radius: var(--r-md); box-shadow: var(--shadow-modal); overflow: auto; overscroll-behavior: contain; }
.notes-preview::backdrop { background: var(--scrim); }
.notes-preview__toolbar { position: sticky; top: 0; z-index: 1; display: flex; align-items: center; gap: 8px; padding: 8px 16px; border-bottom: 1px solid var(--cornell-border); background: var(--cornell-paper); }
.notes-preview__toolbar strong { flex: 1; font-size: var(--fs-ui); font-weight: 600; }
.notes-preview__status { padding: 0 16px; color: var(--cornell-muted); font-size: var(--fs-caption); }
.notes-preview__pages { max-width: 1000px; margin-inline: auto; padding: 16px 24px 32px; box-sizing: border-box; }
.notes-preview__pages > article { border: 1px solid var(--cornell-border); background: var(--cornell-paper); margin-bottom: 40px; min-height: 900px; border-radius: var(--r-xs); position: relative; padding: 28px; }
.notes-preview__page-number { grid-column: 1 / -1; grid-row: 1; order: -1; color: var(--cornell-muted); border-bottom: 1px solid var(--cornell-border); padding-bottom: 10px; margin-bottom: 16px; font-size: var(--fs-caption); }
.notes-preview.cornell-workspace { background: color-mix(in srgb, var(--cornell-border) 55%, var(--cornell-paper)); }
.notes-preview .cornell-note, .notes-print .cornell-note { grid-template-columns: minmax(150px, 23%) minmax(0, 1fr); }
.notes-preview__pages .cornell-workspace__review-action { cursor: default; }
.notes-print-frame { position: fixed; width: 800px; height: 600px; left: -10000px; top: 0; border: 0; }
@container (max-width: 640px) {
  .cornell-workspace__nav { padding: 6px 8px; }
  .cornell-workspace__nav-button { padding: 4px 6px; font-size: var(--fs-caption); }
  .cornell-workspace__page-index[open] .cornell-workspace__page-index-summary { margin-bottom: 4px; }
  .cornell-workspace__nav-list { max-height: 80px; }
}
@media (max-width: 560px) {
  .notes-preview { width: calc(100vw - 12px); height: calc(100dvh - 12px); }
}
/* Export keeps the desktop preview's 950px paper, scaled as a whole to A4.
   Only physical sheet breaks are added; never reflow the Cornell columns. */
/* The PDF frame loads this sheet and reading-content.css, without kaopy.css.
   Supply the control/layout tokens here; reading-content.css owns body typography.
   The PDF is always white paper in the light palette, whatever the screen theme. */
.notes-print {
  --cornell-paper: #FFFFFF;
  --cornell-ink: #16191D;
  --cornell-muted: #4A525E;
  --cornell-border: #D5D2C6;
  --cornell-focus: #174BB8;
  --cornell-warm: #FBF3DC;
  --note-blue: #174BB8;
  --note-green: #137A4C;
  --note-amber: #7A5B14;
  --note-red: #B42318;
  --note-violet: #7C4DCC;
  --font-sans: 'PingFang SC', 'Segoe UI', 'Microsoft YaHei', system-ui, -apple-system, sans-serif; /* the PDF frame has no Geist @font-face */
  --font-mono: 'Cascadia Code', Consolas, ui-monospace, monospace;
  --fs-h2: 22px; --fs-body: 16px; --fs-ui: 14px; --fs-caption: 12px;
  --r-xs: 4px; --r-sm: 8px; --r-md: 12px; --r-pill: 999px;
  --ink: var(--cornell-ink);
  --muted: var(--cornell-muted);
  --faint: var(--cornell-muted);
  --border: var(--cornell-border);
  --surface: var(--cornell-paper);
  --surface-subtle: color-mix(in srgb, var(--cornell-border) 30%, var(--cornell-paper));
  --accent: var(--cornell-focus);
  --accent-strong: var(--cornell-focus);
  --accent-soft: color-mix(in srgb, var(--note-blue) 10%, var(--cornell-paper));
  --success: var(--note-green);
  --success-soft: color-mix(in srgb, var(--note-green) 10%, var(--cornell-paper));
  --danger: var(--note-red);
  --danger-soft: color-mix(in srgb, var(--note-red) 10%, var(--cornell-paper));
  --marker: var(--note-amber);
  --marker-ink: var(--note-amber);
  --marker-soft: var(--cornell-warm);
}
@page { size: A4; margin: 10mm; }
@media print {
  html, body { margin: 0; padding: 0; }
  .notes-print { container-type: normal; print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  .notes-print, .notes-print * { box-sizing: border-box; }
  .notes-print .notes-preview__pages { width: 950px; max-width: none; padding: 0; zoom: 0.7559; }
  .notes-print .cornell-note { display: grid; column-gap: 28px; width: 950px; padding: 28px; overflow: visible; break-before: page; box-shadow: none; margin: 0; }
  .notes-print .cornell-note:first-child { break-before: auto; }
  .notes-print .cornell-workspace__body { display: contents; }
  .notes-print .cornell-sidebar { padding: 4px 18px 16px 0; }
  .notes-print h2, .notes-print h3, .notes-print h4 { break-after: avoid; }
  .notes-print figure, .notes-print tr, .notes-print .katex-display { break-inside: avoid; }
}
.cornell-advisor-compose.composer-box .composer-foot { flex: 1 0 100%; width: 100%; }
.cornell-advisor-compose .composer-actions { margin-left: auto; }
.notes-preview { margin: auto; }

.cornell-workspace__pager-current { border: 0; border-radius: var(--r-sm); padding: 4px 6px; background: transparent; font: inherit; cursor: pointer; }
.cornell-workspace__pager-current:hover { background: var(--cornell-warm); }
/* One line at any panel width: the title shortens, the position never does. */
.cornell-workspace__pager-current { display: inline-flex; align-items: baseline; flex: 0 1 auto; max-width: 100%; white-space: nowrap; }
.cornell-workspace__pager-title { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.cornell-workspace__pager-count { flex: none; margin-left: .25em; }
.cornell-workspace__page-menu { position: fixed; margin: 0; box-sizing: border-box; padding: 6px; border: 1px solid var(--cornell-border); border-radius: var(--r-md); background: var(--cornell-paper); color: var(--cornell-ink); box-shadow: var(--shadow-pop); overflow: auto; }
.cornell-workspace__page-menu .cornell-workspace__nav-button { display: block; font-size: var(--fs-ui); text-align: left; white-space: normal; }
@media (max-width: 560px) {
  .notes-preview__pages { padding: 12px 10px; }
  .notes-preview__pages > article { padding: 16px; min-height: 600px; margin-bottom: 28px; }
  .notes-preview .cornell-note { display: flex; flex-direction: column; }
  .board-head-actions { gap: 4px; }
  .board-head-actions .board-view-switch button { padding-inline: 6px; font-size: var(--fs-caption); }
  .cornell-workspace__tool { font-size: var(--fs-caption); }
}
.board-head .cornell-workspace__tools { --cornell-border: var(--board-border); --cornell-paper: var(--board-paper); --cornell-ink: var(--ink); --cornell-warm: var(--surface-subtle); }
/* The directory and notes scroll independently; only the notes are printed. */
.notes-preview { width: min(1380px, calc(100vw - 32px)); overflow: hidden; }
.notes-preview[open] { display: flex; flex-direction: column; }
.notes-preview__toolbar, .notes-preview__status { flex: none; }
.notes-preview__body { display: grid; grid-template-columns: 180px minmax(0, 1fr); min-height: 0; flex: 1; }
.notes-preview__directory { position: relative; overflow-y: auto; overscroll-behavior: contain; min-height: 0; padding: 10px 8px; border-right: 1px solid var(--cornell-border); background: var(--cornell-paper); }
.notes-preview__directory-entry { display: grid; gap: 5px; width: 100%; text-align: left; border: 1px solid transparent; border-radius: var(--r-sm); background: transparent; color: var(--cornell-muted); padding: 10px; margin-bottom: 4px; font: inherit; font-size: var(--fs-caption); cursor: pointer; }
.notes-preview__directory-entry strong { font-size: var(--fs-ui); font-weight: 600; line-height: 1.5; overflow-wrap: anywhere; }
.notes-preview__directory-entry[aria-current="page"] { border-color: var(--cornell-focus); background: var(--cornell-warm); color: var(--cornell-focus); }
.notes-preview__body > .notes-preview__pages { position: relative; width: 100%; max-width: none; overflow-y: auto; min-height: 0; overscroll-behavior: contain; }
.notes-preview__body > .notes-preview__pages > article { max-width: 950px; margin-inline: auto; box-sizing: border-box; }
@media (max-width: 700px) {
  .notes-preview__body { grid-template-columns: 100px minmax(0, 1fr); }
  .notes-preview__directory { padding: 6px 3px; }
  .notes-preview__directory-entry { padding: 6px; font-size: var(--fs-caption); }
  .notes-preview__directory-entry strong { font-size: var(--fs-caption); }
}
@media (max-width: 560px) {
  .notes-preview { width: calc(100vw - 12px); }
  .notes-preview__body { display: flex; flex-direction: column; }
  .notes-preview__directory { flex: none; max-height: 96px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-right: 0; border-bottom: 1px solid var(--cornell-border); }
  .notes-preview__body > .notes-preview__pages { flex: 1; }
}