/* ============================================================
   AI 文字整理长图工具 - 样式表
   提取自原始 meeting-minutes-card-tool.html 的 <style> 段
   注意：保持规则原样，导出 PDF 时由 collectExportHtml()
        通过 document.styleSheets 收集本文件全部规则。
   ============================================================ */

:root {
  --ink: #1f252d;
  --sub: #6d727b;
  --line: #d7d9dd;
  --gold: #d59a00;
  --gold-bg: #fff8e9;
  --green: #56a233;
  --green-bg: #f3f9f0;
  --pink: #c95a86;
  --pink-bg: #fff3f8;
  --blue: #1267d9;
  --blue-bg: #eef6ff;
  --orange: #db7a00;
  --orange-bg: #fff7eb;
  --red: #c64d54;
  --red-bg: #fff3f3;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--ink);
  background: #f3f5f8;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  background: #f3f5f8;
  overflow: hidden;
}
button, input, textarea, select { font: inherit; }
button { cursor: pointer; border: 0; }

.app {
  height: 100vh;
  min-height: 0;
  display: grid;
  grid-template-columns: 400px minmax(760px, 1fr);
  gap: 16px;
  padding: 16px;
  overflow: hidden;
}

.workspace {
  background: #fff;
  border: 1px solid #dfe5ec;
  border-radius: 8px;
  overflow: hidden;
  height: calc(100vh - 32px);
  min-height: 0;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 24px rgba(33, 45, 60, .07);
}

.topbar, .preview-head {
  min-height: 58px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-bottom: 1px solid #e2e7ee;
  background: #fff;
}

.brand strong, .preview-head strong {
  display: block;
  font-size: 16px;
  line-height: 1.25;
}

.brand span, .preview-head span {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--sub);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.btn, .file-btn {
  min-height: 34px;
  padding: 0 12px;
  border-radius: 6px;
  border: 1px solid #d8e0ea;
  background: #f6f8fb;
  color: #273444;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
}

.btn:hover, .file-btn:hover { background: #edf2f7; }
.btn.primary { color: #fff; border-color: #1677ff; background: #1677ff; }
.btn.danger { color: #b42318; border-color: #ffd2d2; background: #fff2f2; }

.input-area {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  padding: 14px;
  display: grid;
  gap: 14px;
  align-content: start;
}

.field { display: grid; gap: 7px; }
.field label { font-size: 13px; font-weight: 700; color: #344054; }

input, textarea, select {
  width: 100%;
  border: 1px solid #cdd8e6;
  border-radius: 6px;
  background: #fff;
  outline: none;
  color: #1f252d;
}

input, select { height: 36px; padding: 0 10px; }
textarea {
  min-height: 330px;
  resize: vertical;
  padding: 11px;
  line-height: 1.62;
}

.source-panel {
  border: 1px solid #dfe6ef;
  border-radius: 8px;
  background: #fff;
  padding: 12px;
  display: grid;
  gap: 10px;
}

.panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  font-weight: 800;
  color: #263443;
}

.panel-hint {
  font-size: 12px;
  line-height: 1.45;
  color: #667085;
  font-weight: 500;
}

.source-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.source-actions .btn,
.source-actions .file-btn {
  width: 100%;
}

.ai-panel {
  border: 1px solid #dfe6ef;
  border-radius: 8px;
  background: #fbfdff;
  padding: 12px;
  display: grid;
  gap: 10px;
}

.ai-panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  font-weight: 800;
  color: #263443;
}

.ai-config {
  border: 1px solid #e2e8f0;
  border-radius: 7px;
  background: #fff;
  overflow: hidden;
}

.ai-config summary {
  min-height: 38px;
  padding: 0 11px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 13px;
  font-weight: 800;
  color: #344054;
}

.ai-config-body {
  border-top: 1px solid #edf1f6;
  padding: 11px;
  display: grid;
  gap: 10px;
}

.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.ai-status {
  min-height: 20px;
  color: #667085;
  font-size: 12px;
  line-height: 1.45;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #344054;
  font-size: 13px;
  font-weight: 700;
}

.check-row input {
  width: 16px;
  height: 16px;
  box-shadow: none;
}

input:focus, textarea:focus, select:focus {
  border-color: #1677ff;
  box-shadow: 0 0 0 3px rgba(22, 119, 255, .12);
}

.quick-row { display: grid; grid-template-columns: 1fr; gap: 10px; }

.block-editor {
  border-top: 1px solid #e2e7ee;
  padding: 12px 14px 14px;
  background: #fbfcfe;
  display: grid;
  gap: 9px;
}

.block-editor-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
}

.block-list {
  display: grid;
  gap: 7px;
  max-height: 210px;
  overflow: auto;
}

.block-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  border: 1px solid #dde5ee;
  border-radius: 6px;
  background: #fff;
  padding: 8px 8px 8px 10px;
  font-size: 13px;
}

.block-item span:first-child {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.icon-btn {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: transparent;
  color: #475467;
  border: 1px solid transparent;
}

.icon-btn:hover { background: #f0f4f8; border-color: #d9e2ed; }

.preview-wrap { min-width: 0; }
.stage {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 24px;
  background: #f3f5f8;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.poster {
  width: 1180px;
  max-width: 100%;
  background: #fff;
  padding: 42px 38px 30px;
  border-radius: 0;
  box-shadow: 0 18px 60px rgba(29, 39, 54, .16);
}

.poster-title {
  margin: 0;
  font-size: 31px;
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: 0;
  outline: none;
}

.poster-subtitle {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.45;
  color: #71757d;
  font-weight: 600;
  outline: none;
}

.poster-rule {
  height: 4px;
  background: linear-gradient(90deg, #d3d7dc 0%, #eceff3 100%);
  margin: 26px 0 24px;
}

.poster-body {
  display: grid;
  gap: 24px;
}

.poster-body.layout-board {
  --board-row: 8px;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-auto-flow: row;
  grid-auto-rows: var(--board-row);
  gap: 10px 20px;
  align-items: start;
}

.layout-board > .chapter {
  min-width: 0;
  grid-column: span var(--board-cols, 12);
  grid-row-end: span var(--board-rows, 24);
}

.layout-board > .chapter.board-equalized {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.layout-board > .chapter.board-equalized .chapter-content {
  flex: 1;
  display: flex;
  min-height: 0;
}

.layout-board > .chapter.board-equalized .chapter-content > .chapter-panel {
  flex: 1;
  width: 100%;
}

.layout-board > .chapter.span-3 { --board-cols: 3; }
.layout-board > .chapter.span-4 { --board-cols: 4; }
.layout-board > .chapter.span-5 { --board-cols: 5; }
.layout-board > .chapter.span-6 { --board-cols: 6; }
.layout-board > .chapter.span-7 { --board-cols: 7; }
.layout-board > .chapter.span-8 { --board-cols: 8; }
.layout-board > .chapter.span-9 { --board-cols: 9; }
.layout-board > .chapter.span-12 { --board-cols: 12; }

.layout-board > .chapter:not(.span-12) .insight-grid,
.layout-board > .chapter:not(.span-12) .mini-grid,
.layout-board > .chapter:not(.span-12) .compare-grid,
.layout-board > .chapter:not(.span-12) .risk-grid,
.layout-board > .chapter:not(.span-12) .case-grid {
  grid-template-columns: 1fr;
}

.layout-board > .chapter.span-12.card-count-2 .insight-grid,
.layout-board > .chapter.span-12.card-count-2 .mini-grid,
.layout-board > .chapter.span-12.card-count-2 .compare-grid,
.layout-board > .chapter.span-12.card-count-2 .risk-grid,
.layout-board > .chapter.span-12.card-count-2 .case-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.layout-board > .chapter.span-12.card-count-3 .insight-grid,
.layout-board > .chapter.span-12.card-count-3 .mini-grid,
.layout-board > .chapter.span-12.card-count-3 .compare-grid,
.layout-board > .chapter.span-12.card-count-3 .risk-grid,
.layout-board > .chapter.span-12.card-count-3 .case-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.layout-board > .chapter.span-12.layout-conclusion,
.layout-board > .chapter.span-12.layout-quote {
  grid-column: 1 / -1;
}

.chapter {
  position: relative;
}

.chapter.rhythm-stack .insight-grid,
.chapter.rhythm-stack .mini-grid {
  grid-template-columns: 1fr;
}

.chapter.rhythm-stack .info-card {
  min-height: auto;
}

.chapter.rhythm-band .chapter-panel {
  padding: 18px 22px;
}

.chapter.rhythm-band .checklist-grid,
.chapter.rhythm-band .case-grid,
.chapter.rhythm-band .mini-grid {
  grid-template-columns: 1fr;
  gap: 8px;
}

.chapter.rhythm-band .check-item,
.chapter.rhythm-band .info-card,
.chapter.rhythm-band .case-card {
  min-height: auto;
  padding: 12px 14px;
}

.chapter.rhythm-strip .insight-grid,
.chapter.rhythm-strip .mini-grid,
.chapter.rhythm-strip .case-grid,
.chapter.rhythm-strip .compare-grid,
.chapter.rhythm-strip .risk-grid {
  grid-template-columns: repeat(var(--card-cols, 3), minmax(0, 1fr));
  gap: 14px;
  align-items: stretch;
}

.chapter.rhythm-strip .info-card,
.chapter.rhythm-strip .case-card,
.chapter.rhythm-strip .compare-card,
.chapter.rhythm-strip .risk-card {
  min-width: 0;
  min-height: 0;
  padding: 14px 14px 13px;
}

.chapter.rhythm-strip .content {
  font-size: 12.8px;
  line-height: 1.58;
}

.chapter.rhythm-strip .callout {
  font-size: 12.4px;
  line-height: 1.5;
}

.chapter.importance-high .chapter-title {
  font-size: 18px;
}

.chapter.importance-high .chapter-panel {
  box-shadow: inset 0 1px 0 rgba(255,255,255,.9), 0 10px 28px rgba(31,37,45,.055);
}

.chapter.importance-low .chapter-heading {
  margin-bottom: 14px;
}

.chapter.importance-low .chapter-title {
  font-size: 18px;
}

.chapter.density-low .chapter-panel {
  padding: 22px;
}

.chapter.density-high .content,
.chapter.density-high .structure-text,
.chapter.density-high .timeline-text,
.chapter.density-high .roadmap-text {
  font-size: 13px;
  line-height: 1.58;
}

.chapter.display-strip .chapter-panel {}

.chapter-row {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 22px;
  align-items: start;
}

.chapter-row.row-count-3 {
  gap: 16px;
}

.chapter-row.row-count-4 {
  gap: 14px;
}

.chapter-row .chapter {
  min-width: 0;
  display: flex;
  flex-direction: column;
  grid-column: span var(--row-span, 6);
}

.chapter-row .chapter.span-3 { --row-span: 3; }
.chapter-row .chapter.span-4 { --row-span: 4; }
.chapter-row .chapter.span-5 { --row-span: 5; }
.chapter-row .chapter.span-6 { --row-span: 6; }
.chapter-row .chapter.span-7 { --row-span: 7; }
.chapter-row .chapter.span-8 { --row-span: 8; }
.chapter-row .chapter.span-9 { --row-span: 9; }
.chapter-row .chapter.span-12 { --row-span: 12; }

.chapter-row .chapter.span-3 .chapter-title,
.chapter-row .chapter.span-4 .chapter-title {
  font-size: 15px;
  line-height: 1.32;
}

.chapter-row .chapter.span-3 .chapter-no,
.chapter-row .chapter.span-4 .chapter-no {
  min-width: 34px;
  font-size: 18px;
}

.chapter-row.row-count-3 .chapter-heading,
.chapter-row.row-count-4 .chapter-heading {
  margin-bottom: 9px;
  gap: 6px;
}

.chapter-row.row-count-3 .chapter-no,
.chapter-row.row-count-4 .chapter-no {
  min-width: 34px;
  font-size: 18px;
}

.chapter-row.row-count-3 .chapter-title,
.chapter-row.row-count-4 .chapter-title {
  font-size: 15px;
  line-height: 1.3;
}

.chapter-row .chapter-content,
.chapter-row .chapter-content > .chapter-panel {
  flex: initial;
  height: auto;
}

.chapter-row.row-count-3 .chapter-panel,
.chapter-row.row-count-4 .chapter-panel {
  padding: 14px;
  border-radius: 9px;
}

.chapter-row.row-count-3 .info-card,
.chapter-row.row-count-3 .case-card,
.chapter-row.row-count-3 .compare-card,
.chapter-row.row-count-3 .risk-card,
.chapter-row.row-count-3 .split-side,
.chapter-row.row-count-3 .matrix-cell,
.chapter-row.row-count-3 .quadrant-cell,
.chapter-row.row-count-4 .info-card,
.chapter-row.row-count-4 .case-card,
.chapter-row.row-count-4 .compare-card,
.chapter-row.row-count-4 .risk-card,
.chapter-row.row-count-4 .split-side,
.chapter-row.row-count-4 .matrix-cell,
.chapter-row.row-count-4 .quadrant-cell {
  min-height: 0;
  padding: 12px;
}

.chapter-row.row-count-3 .content,
.chapter-row.row-count-3 .structure-text,
.chapter-row.row-count-4 .content,
.chapter-row.row-count-4 .structure-text {
  font-size: 12.5px;
  line-height: 1.55;
}

.chapter-row .chapter:not(.span-12) .insight-grid,
.chapter-row .chapter:not(.span-12) .mini-grid,
.chapter-row .chapter:not(.span-12) .compare-grid,
.chapter-row .chapter:not(.span-12) .risk-grid,
.chapter-row .chapter:not(.span-12) .case-grid,
.chapter-row .chapter:not(.span-12) .timeline,
.chapter-row .chapter:not(.span-12) .roadmap,
.chapter-row .chapter:not(.span-12) .cycle-grid,
.chapter-row .chapter:not(.span-12) .stage-gates,
.chapter-row .chapter:not(.span-12) .chain,
.chapter-row .chapter:not(.span-12) .quadrant-grid,
.chapter-row .chapter:not(.span-12) .matrix-grid {
  grid-template-columns: 1fr;
}

.chapter.span-12.card-count-2 .insight-grid,
.chapter.span-12.card-count-2 .mini-grid,
.chapter.span-12.card-count-2 .compare-grid,
.chapter.span-12.card-count-2 .risk-grid,
.chapter.span-12.card-count-2 .case-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.chapter.span-12.card-count-3 .insight-grid,
.chapter.span-12.card-count-3 .mini-grid,
.chapter.span-12.card-count-3 .compare-grid,
.chapter.span-12.card-count-3 .risk-grid,
.chapter.span-12.card-count-3 .case-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  position: relative;
}

.strip-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 15px;
  min-height: 190px;
}

.strip-card .content {
  font-size: 13px;
  line-height: 1.56;
}

.strip-source {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 0 8px;
  margin-bottom: 8px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--chapter);
  font-size: 12px;
  font-weight: 900;
}

.chapter-heading {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 12px;
  font-weight: 900;
  line-height: 1.2;
}

.chapter-no {
  font-size: 24px;
  letter-spacing: 0;
  color: var(--chapter);
  font-family: Arial, sans-serif;
  text-shadow: 0 1px 0 rgba(255,255,255,.8);
}

.chapter-title {
  font-size: 18px;
  outline: none;
  color: #222831;
  letter-spacing: 0;
}

.chapter-panel {
  background: var(--chapter-bg);
  border-radius: 14px;
  padding: 22px 22px;
}

.gold { --chapter: #c98f00; --chapter-bg: #fff9ec; --soft: #fff0c9; --border: #efcd7a; }
.green { --chapter: #4c9633; --chapter-bg: #f4faf1; --soft: #dceecd; --border: #c9e0bf; }
.pink { --chapter: #c2537f; --chapter-bg: #fff4f8; --soft: #ffe3ee; --border: #efc5d7; }
.blue { --chapter: #1769cf; --chapter-bg: #f0f7ff; --soft: #e3f0ff; --border: #bbd8f9; }
.orange { --chapter: #d97800; --chapter-bg: #fff7ec; --soft: #ffe7c4; --border: #edc181; }
.red { --chapter: #bd4c55; --chapter-bg: #fff4f4; --soft: #ffe4e4; --border: #edc4c8; }

.insight-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.info-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 15px 15px 14px;
  min-height: 170px;
}

.info-title {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 9px;
  border-bottom: 1px solid #eadfbf;
  font-size: 15px;
  font-weight: 900;
  outline: none;
}

.symbol {
  color: var(--chapter);
  font-weight: 900;
  font-size: 17px;
  line-height: 1;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 0 8px;
  border: 1px solid var(--chapter);
  border-radius: 999px;
  color: var(--chapter);
  font-size: 11px;
  font-weight: 800;
  background: #fff;
}

.content {
  outline: none;
  font-size: 14px;
  line-height: 1.72;
  color: #242b35;
}

.content ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.content li { margin: 4px 0; }
.content b, .content strong, .hl { color: var(--chapter); font-weight: 900; }

.callout {
  margin-top: 12px;
  padding: 11px 13px;
  border-radius: 7px;
  background: var(--soft);
  font-size: 13px;
  line-height: 1.65;
  outline: none;
}

.flow-grid {
  display: grid;
  grid-template-columns: 1fr 44px 1fr 44px 1fr;
  align-items: start;
  gap: 10px;
}

.flow-arrow {
  color: var(--chapter);
  font-size: 36px;
  line-height: 40px;
  text-align: center;
  padding-top: 16px;
  font-family: Arial, sans-serif;
}

.flow-col-title {
  background: var(--soft);
  border-radius: 7px;
  text-align: center;
  padding: 8px;
  font-weight: 900;
  font-size: 14px;
  outline: none;
}

.flow-items {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

.flow-item {
  background: rgba(255,255,255,.78);
  border-radius: 6px;
  padding: 8px 11px;
  font-size: 13px;
  line-height: 1.5;
  outline: none;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(145px, 1fr));
  border: 1px solid var(--border);
  background: #fff;
}

.metric-cell {
  min-height: 106px;
  padding: 18px 14px;
  border-right: 1px solid var(--border);
  font-size: 13px;
  line-height: 1.5;
  outline: none;
}

.metric-cell:last-child { border-right: 0; }
.metric-cell .muted { color: #8a9099; }
.metric-cell .num { color: var(--chapter); font-size: 17px; font-weight: 900; }
.metric-cell strong { font-size: 15px; color: #252b35; }

.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}

.case-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 15px;
}

.case-title {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--border);
  font-weight: 900;
  font-size: 14px;
  outline: none;
}

.split-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.mini-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.compare-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 15px;
}

.compare-card.before {
  background: rgba(255,255,255,.74);
}

.compare-title {
  font-size: 15px;
  font-weight: 900;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--border);
  outline: none;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.timeline-step {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 16px 14px 14px;
  min-height: 132px;
}

.timeline-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--chapter);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  margin-bottom: 9px;
}

.timeline-title {
  font-weight: 900;
  font-size: 14px;
  margin-bottom: 7px;
  outline: none;
}

.timeline-text {
  font-size: 13px;
  line-height: 1.55;
  outline: none;
}

.checklist-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
}

.check-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 13px;
  font-size: 13px;
  line-height: 1.55;
  outline: none;
}

.check-item::before {
  content: "✓";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--chapter);
  color: #fff;
  font-size: 12px;
  font-weight: 900;
  vertical-align: -2px;
}

.risk-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 14px;
}

.risk-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 15px;
}

.risk-title {
  color: var(--chapter);
  font-weight: 900;
  margin-bottom: 8px;
  outline: none;
}

.quote-box {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px 24px;
  font-size: 18px;
  line-height: 1.75;
  font-weight: 800;
  outline: none;
}

.quote-box::before {
  content: "“";
  color: var(--chapter);
  font-size: 38px;
  line-height: 0;
  vertical-align: -12px;
  margin-right: 6px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--border);
  font-size: 13px;
}

.data-table th,
.data-table td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  line-height: 1.5;
  outline: none;
}

.data-table th {
  background: var(--soft);
  font-weight: 900;
}

.roadmap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 12px;
}

.roadmap-node {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 14px;
  min-height: 120px;
}

.roadmap-time {
  display: inline-flex;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--chapter);
  font-size: 12px;
  font-weight: 900;
  margin-bottom: 8px;
  outline: none;
}

.roadmap-text {
  font-size: 13px;
  line-height: 1.6;
  outline: none;
}

.cycle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
}

.cycle-node,
.funnel-step,
.pyramid-level,
.tree-node,
.gate-card,
.chain-node,
.quadrant-cell {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 14px;
  outline: none;
}

.cycle-node {
  min-height: 118px;
  position: relative;
}

.cycle-node::after {
  content: "→";
  position: absolute;
  right: -14px;
  top: 42%;
  color: var(--chapter);
  font-size: 24px;
  font-weight: 900;
}

.cycle-node:last-child::after {
  content: "↺";
  right: 10px;
  top: 8px;
  font-size: 18px;
}

.structure-title {
  color: var(--chapter);
  font-size: 14px;
  font-weight: 900;
  margin-bottom: 8px;
  outline: none;
}

.structure-text {
  font-size: 13px;
  line-height: 1.58;
  outline: none;
}

.funnel {
  display: grid;
  gap: 10px;
  justify-items: center;
}

.funnel-step {
  text-align: center;
  min-height: 62px;
}

.funnel-step:nth-child(1) { width: 100%; }
.funnel-step:nth-child(2) { width: 86%; }
.funnel-step:nth-child(3) { width: 72%; }
.funnel-step:nth-child(4) { width: 58%; }
.funnel-step:nth-child(n+5) { width: 48%; }

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--border);
  background: #fff;
}

.matrix-cell {
  min-height: 126px;
  padding: 14px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  outline: none;
}

.matrix-cell:nth-child(2n) { border-right: 0; }
.matrix-cell:nth-last-child(-n+2) { border-bottom: 0; }

.pyramid {
  display: grid;
  gap: 10px;
  justify-items: center;
}

.pyramid-level {
  text-align: center;
  min-height: 58px;
}

.pyramid-level:nth-child(1) { width: 48%; }
.pyramid-level:nth-child(2) { width: 68%; }
.pyramid-level:nth-child(3) { width: 84%; }
.pyramid-level:nth-child(n+4) { width: 100%; }

.swimlane {
  display: grid;
  grid-template-columns: 150px 1fr;
  border: 1px solid var(--border);
  background: #fff;
}

.lane-label,
.lane-content {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  outline: none;
}

.lane-label {
  background: var(--soft);
  color: var(--chapter);
  font-weight: 900;
  border-right: 1px solid var(--border);
}

.lane-label:last-of-type,
.lane-content:last-child {
  border-bottom: 0;
}

.tree {
  display: grid;
  gap: 12px;
}

.tree-root {
  justify-self: center;
  min-width: 240px;
  background: var(--soft);
  color: var(--chapter);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 12px;
  text-align: center;
  font-weight: 900;
  outline: none;
}

.tree-children {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.stage-gates {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 12px;
}

.gate-badge {
  display: inline-flex;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--chapter);
  font-size: 12px;
  font-weight: 900;
  margin-bottom: 8px;
  outline: none;
}

.split-structure {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.split-side {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 15px;
}

.chain {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 10px;
  align-items: stretch;
}

.chain-node {
  position: relative;
  min-height: 112px;
}

.chain-node::after {
  content: "→";
  position: absolute;
  right: -13px;
  top: 38%;
  color: var(--chapter);
  font-size: 22px;
  font-weight: 900;
}

.chain-node:last-child::after { display: none; }

.quadrant-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.quadrant-cell {
  min-height: 128px;
}

.spotlight-box {
  display: grid;
  grid-template-columns: minmax(220px, .9fr) 1.1fr;
  gap: 16px;
  align-items: stretch;
}

.spotlight-main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 150px;
  padding: 22px;
  border-radius: 9px;
  background: var(--chapter);
  color: #fff;
  box-shadow: 0 10px 24px rgba(31,37,45,.08);
}

.spotlight-kicker {
  font-size: 12px;
  font-weight: 800;
  opacity: .84;
  margin-bottom: 8px;
}

.spotlight-title {
  font-size: 22px;
  line-height: 1.28;
  font-weight: 900;
  outline: none;
}

.spotlight-points {
  display: grid;
  gap: 9px;
}

.spotlight-point {
  padding: 11px 13px;
  border-radius: 7px;
  background: #fff;
  border: 1px solid var(--border);
  font-size: 13px;
  line-height: 1.55;
  outline: none;
}

.framework-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
}

.framework-card {
  min-height: 145px;
  padding: 15px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: #fff;
  position: relative;
  overflow: hidden;
}

.framework-no {
  display: inline-flex;
  width: 26px;
  height: 26px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--chapter);
  color: #fff;
  font-size: 12px;
  font-weight: 900;
  margin-bottom: 8px;
}

.formula-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  align-items: stretch;
}

.formula-part {
  padding: 16px 14px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: #fff;
  text-align: center;
}

.formula-title {
  color: var(--chapter);
  font-size: 16px;
  font-weight: 900;
  margin-bottom: 7px;
  outline: none;
}

.formula-text {
  font-size: 13px;
  line-height: 1.55;
  outline: none;
}

.dosdonts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.do-card,
.dont-card {
  padding: 15px;
  border-radius: 9px;
  background: #fff;
  border: 1px solid var(--border);
}

.do-card {
  --chapter: var(--green);
  --soft: #e6f4dd;
  --border: #cbe3bf;
}

.dont-card {
  --chapter: var(--red);
  --soft: #ffe4e4;
  --border: #efc4c4;
}

.do-card .structure-title,
.dont-card .structure-title {
  display: flex;
  align-items: center;
  gap: 7px;
}

.scorecard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.scorecard-item {
  padding: 14px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: #fff;
}

.score-title {
  font-size: 13px;
  font-weight: 900;
  color: #202733;
  margin-bottom: 9px;
  outline: none;
}

.score-bar {
  height: 7px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--soft) 74%, #fff 26%);
  overflow: hidden;
  margin-bottom: 9px;
}

.score-bar span {
  display: block;
  height: 100%;
  width: var(--score, 68%);
  background: var(--chapter);
  border-radius: inherit;
}

.playbook-grid {
  display: grid;
  gap: 10px;
}

.playbook-step {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  padding: 13px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: #fff;
}

.playbook-no {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--chapter);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 13px;
}

.decision-tree {
  display: grid;
  gap: 10px;
}

.decision-node {
  display: grid;
  grid-template-columns: minmax(150px, .45fr) 1fr;
  gap: 10px;
  align-items: stretch;
  padding: 12px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: #fff;
}

.decision-condition {
  padding: 10px;
  border-radius: 7px;
  background: var(--soft);
  color: var(--chapter);
  font-weight: 900;
  outline: none;
}

.lessons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.lesson-card {
  padding: 15px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, #fff 0%, color-mix(in srgb, var(--chapter-bg) 45%, #fff 55%) 100%);
}

.final-strip {
  background: #fff;
  border: 1px solid #efc4c4;
  border-radius: 9px;
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.7;
  outline: none;
}

.final-list {
  display: grid;
  gap: 10px;
}

.final-item {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 10px;
  align-items: start;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.62;
  outline: none;
}

.final-dot {
  width: 17px;
  height: 17px;
  margin-top: 2px;
  border-radius: 50%;
  background: var(--chapter);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 900;
}

.structured-rows {
  display: grid;
  gap: 7px;
  margin-top: 10px;
}

.structured-row {
  display: grid;
  grid-template-columns: minmax(46px, auto) minmax(0, 1fr);
  gap: 9px;
  align-items: start;
  padding: 8px 10px;
  border-radius: 7px;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(255,255,255,.78);
}

.structured-label {
  color: var(--chapter);
  font-size: 12px;
  line-height: 1.45;
  font-weight: 900;
  white-space: nowrap;
}

.structured-value {
  min-width: 0;
  color: #26303d;
  font-size: 12.8px;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.chapter.card-count-1 .insight-grid,
.chapter.card-count-1 .mini-grid,
.chapter.card-count-1 .case-grid,
.chapter.card-count-1 .compare-grid,
.chapter.card-count-1 .risk-grid {
  grid-template-columns: minmax(0, 1fr);
}

.chapter.card-count-1 .info-card,
.chapter.card-count-1 .case-card,
.chapter.card-count-1 .compare-card,
.chapter.card-count-1 .risk-card {
  min-height: 0;
  padding: 17px 18px;
}

.chapter.card-count-1 .content ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 22px;
}

.chapter.card-count-1.density-low .content ul {
  grid-template-columns: 1fr;
}

.final-lead {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 11px;
  align-items: start;
  padding: 15px 16px;
  border-radius: 9px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--chapter-bg) 76%, #ffffff 24%), #fff);
  border: 1px solid color-mix(in srgb, var(--border) 76%, #ffffff 24%);
  font-size: 14px;
  line-height: 1.68;
  font-weight: 750;
  outline: none;
}

.footer-mark {
  margin-top: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  color: #b6bbc2;
  font-size: 12px;
}

.footer-mark::before, .footer-mark::after {
  content: "";
  width: 42px;
  height: 1px;
  background: #eef0f3;
}

[contenteditable="true"] { border-radius: 4px; }
[contenteditable="true"]:focus {
  background: rgba(22, 119, 255, .08);
  box-shadow: 0 0 0 3px rgba(22,119,255,.13);
}

.block-tools {
  position: absolute;
  right: 6px;
  top: 2px;
  display: none;
  gap: 4px;
  padding: 3px;
  border: 1px solid #dce5ef;
  border-radius: 6px;
  background: rgba(255,255,255,.96);
  box-shadow: 0 8px 20px rgba(31,37,45,.12);
}

.chapter:hover .block-tools, .chapter:focus-within .block-tools { display: flex; }
.empty-state {
  border: 1px dashed #cbd5e1;
  border-radius: 10px;
  padding: 24px;
  color: var(--sub);
  text-align: center;
  background: #fff;
}

/* Visual polish layer */
.chapter-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .72);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.85);
}

.info-card,
.case-card,
.compare-card,
.risk-card,
.timeline-step,
.roadmap-node,
.cycle-node,
.funnel-step,
.matrix-cell,
.pyramid-level,
.tree-node,
.gate-card,
.split-side,
.chain-node,
.quadrant-cell,
.strip-card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #ffffff 0%, #fffefd 100%);
  box-shadow: 0 8px 20px rgba(31, 37, 45, .055);
}

.info-card::before,
.case-card::before,
.compare-card::before,
.risk-card::before,
.timeline-step::before,
.roadmap-node::before,
.cycle-node::before,
.funnel-step::before,
.matrix-cell::before,
.pyramid-level::before,
.tree-node::before,
.gate-card::before,
.split-side::before,
.chain-node::before,
.quadrant-cell::before,
.strip-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  height: 3px;
  background: var(--chapter);
  opacity: .72;
}

.info-title,
.case-title,
.compare-title,
.risk-title,
.structure-title,
.timeline-title {
  letter-spacing: 0;
  color: #202733;
}

.info-title,
.case-title,
.compare-title {
  flex-wrap: wrap;
  border-bottom-color: rgba(80, 98, 120, .16);
}

.symbol {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--chapter);
  color: #fff;
  font-size: 11px;
  flex: 0 0 auto;
}

.tag,
.structure-badge,
.strip-source,
.roadmap-time,
.gate-badge {
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.58);
}

.content ul {
  padding-left: 19px;
}

.content li {
  margin: 6px 0;
}

.content li::marker {
  color: var(--chapter);
}

.hl {
  padding: 0 1px;
  border-radius: 3px;
  background: linear-gradient(180deg, transparent 54%, var(--soft) 54%);
}

.callout {
  border: 1px solid rgba(255,255,255,.72);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.72);
  font-weight: 650;
}

.flow-col-title {
  border: 1px solid rgba(255,255,255,.72);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.75);
}

.flow-item,
.check-item {
  border: 1px solid rgba(255,255,255,.72);
  box-shadow: 0 5px 14px rgba(31,37,45,.045);
}

.metric-grid {
  border: 0;
  gap: 1px;
  background: var(--border);
}

.metric-cell {
  background: #fff;
  border: 0;
}

.metric-cell .num {
  display: inline-block;
  margin: 2px 0;
  font-size: 18px;
}

.quote-box {
  box-shadow: 0 10px 24px rgba(31,37,45,.06);
  background: linear-gradient(180deg, #fff 0%, #fffafa 100%);
}

.data-table {
  box-shadow: 0 8px 20px rgba(31,37,45,.045);
}

.data-table th {
  color: #202733;
}

.chapter-row .chapter-panel {
  padding: 20px;
}

/* Refined poster theme */
.poster {
  color: #1e2632;
  background:
    linear-gradient(#fff, #fff) padding-box,
    linear-gradient(180deg, rgba(212, 218, 226, .4), rgba(255,255,255,0)) border-box;
}

.poster-title {
  font-size: 30px;
  line-height: 1.16;
  color: #19212c;
}

.poster-subtitle {
  color: #6a7280;
  font-size: 13px;
  font-weight: 650;
}

.poster-rule {
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, #d2d7df 0%, #eef1f5 72%, rgba(238,241,245,0) 100%);
  margin: 24px 0 24px;
}

.poster-body {
  gap: 25px;
}

.chapter-heading {
  margin-bottom: 11px;
  align-items: center;
}

.chapter-no {
  min-width: 42px;
  font-size: 22px;
  line-height: 1;
  letter-spacing: 0;
}

.chapter-title {
  font-size: 17px;
  line-height: 1.28;
  color: #1f2733;
}

.chapter-panel {
  border-radius: 11px;
  padding: 20px;
  background:
    radial-gradient(circle at 18px 18px, rgba(255,255,255,.72), rgba(255,255,255,0) 140px),
    var(--chapter-bg);
  border: 1px solid rgba(255,255,255,.82);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.82), 0 6px 18px rgba(31,37,45,.035);
}

.info-card,
.case-card,
.compare-card,
.risk-card,
.timeline-step,
.roadmap-node,
.cycle-node,
.funnel-step,
.matrix-cell,
.pyramid-level,
.tree-node,
.gate-card,
.split-side,
.chain-node,
.quadrant-cell,
.strip-card {
  border-radius: 8px;
  border-color: color-mix(in srgb, var(--border) 82%, #ffffff 18%);
  background: linear-gradient(180deg, #ffffff 0%, #fffefd 100%);
  box-shadow: 0 7px 18px rgba(31, 37, 45, .045);
}

.info-card::before,
.case-card::before,
.compare-card::before,
.risk-card::before,
.timeline-step::before,
.roadmap-node::before,
.cycle-node::before,
.funnel-step::before,
.matrix-cell::before,
.pyramid-level::before,
.tree-node::before,
.gate-card::before,
.split-side::before,
.chain-node::before,
.quadrant-cell::before,
.strip-card::before {
  height: 2px;
  opacity: .62;
}

.info-title,
.case-title,
.compare-title {
  min-height: 34px;
  padding-bottom: 8px;
  border-bottom-color: rgba(75, 91, 110, .13);
  font-size: 14px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.info-title .symbol,
.case-title .symbol,
.final-strip .symbol {
  align-self: flex-start;
  margin-top: 1px;
}

.tag,
.structure-badge {
  flex: 0 0 auto;
  max-width: 100%;
  white-space: normal;
  line-height: 1.25;
}

.risk-title,
.structure-title,
.timeline-title {
  color: #202733;
}

.content {
  font-size: 13.5px;
  line-height: 1.68;
}

.content ul {
  margin-top: 9px;
  padding-left: 17px;
}

.content li {
  margin: 5px 0;
}

.tag,
.strip-source,
.roadmap-time,
.gate-badge {
  min-height: 20px;
  background: color-mix(in srgb, var(--soft) 82%, #ffffff 18%);
  border-color: color-mix(in srgb, var(--chapter) 70%, #ffffff 30%);
  font-size: 10.5px;
  box-shadow: none;
}

.structure-badge {
  display: inline-flex;
  align-items: center;
  margin-left: 6px;
  padding: 2px 6px;
  border-radius: 999px;
  font-weight: 800;
  color: var(--chapter);
}

.callout {
  margin-top: 11px;
  padding: 10px 12px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--soft) 78%, #ffffff 22%);
  border: 1px solid rgba(255,255,255,.85);
  font-size: 12.8px;
  line-height: 1.58;
  color: #303947;
}

.hl {
  color: var(--chapter);
  font-weight: 900;
  background: linear-gradient(180deg, transparent 58%, color-mix(in srgb, var(--soft) 88%, #ffffff 12%) 58%);
}

.metric-grid {
  gap: 1px;
  border: 1px solid color-mix(in srgb, var(--border) 72%, #ffffff 28%);
  border-radius: 8px;
  overflow: hidden;
  background: color-mix(in srgb, var(--border) 58%, #ffffff 42%);
}

.metric-cell {
  min-height: 96px;
  padding: 15px 14px;
  background: #fff;
  border: 0;
}

.metric-cell .num {
  display: inline-block;
  margin: 2px 0 1px;
  font-size: 18px;
  line-height: 1.12;
}

.metric-cell strong {
  font-size: 13.5px;
  line-height: 1.45;
}

.flow-grid {
  gap: 8px;
}

.flow-arrow,
.chain-node::after,
.cycle-node::after {
  color: color-mix(in srgb, var(--chapter) 88%, #2f3a49 12%);
}

.flow-arrow {
  font-size: 27px;
  line-height: 34px;
  padding-top: 18px;
}

.flow-col-title {
  min-height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  background: color-mix(in srgb, var(--soft) 76%, #ffffff 24%);
}

.flow-item,
.check-item {
  background: rgba(255,255,255,.86);
  box-shadow: none;
  border: 1px solid rgba(255,255,255,.76);
}

.check-item {
  border-left: 3px solid var(--chapter);
  padding: 10px 12px;
}

.check-item::before {
  width: 16px;
  height: 16px;
  font-size: 10px;
}

.quote-box {
  border-left: 4px solid var(--chapter);
  padding: 20px 22px;
  background: linear-gradient(180deg, #fff 0%, color-mix(in srgb, var(--chapter-bg) 54%, #ffffff 46%) 100%);
  font-size: 17px;
  box-shadow: 0 8px 22px rgba(31,37,45,.045);
}

.data-table {
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  border-radius: 8px;
  border-color: color-mix(in srgb, var(--border) 78%, #ffffff 22%);
}

.data-table th {
  background: color-mix(in srgb, var(--soft) 82%, #ffffff 18%);
}

.data-table th,
.data-table td {
  border-color: color-mix(in srgb, var(--border) 72%, #ffffff 28%);
}

/* 表格首列强化：作为行标题，加粗+主题色背景 */
.data-table td:first-child:not(:only-child) {
  font-weight: 900;
  color: var(--chapter);
  background: color-mix(in srgb, var(--soft) 42%, #ffffff 58%);
  white-space: nowrap;
  min-width: 92px;
}

.final-strip {
  border-left: 4px solid var(--chapter);
  border-color: color-mix(in srgb, var(--border) 76%, #ffffff 24%);
  background: linear-gradient(90deg, color-mix(in srgb, var(--chapter-bg) 62%, #ffffff 38%), #fff);
  box-shadow: 0 7px 18px rgba(31,37,45,.04);
}

.final-item {
  border-left: 3px solid var(--chapter);
  border-color: color-mix(in srgb, var(--border) 76%, #ffffff 24%);
  background: linear-gradient(90deg, color-mix(in srgb, var(--chapter-bg) 70%, #ffffff 30%), #fff);
  box-shadow: 0 5px 14px rgba(31,37,45,.035);
}

.swimlane,
.matrix-grid {
  border-radius: 8px;
  overflow: hidden;
  border-color: color-mix(in srgb, var(--border) 78%, #ffffff 22%);
}

.lane-label {
  background: color-mix(in srgb, var(--soft) 82%, #ffffff 18%);
}

.tree-root {
  background: color-mix(in srgb, var(--soft) 82%, #ffffff 18%);
  box-shadow: 0 6px 16px rgba(31,37,45,.04);
}

.chapter.rhythm-stack .chapter-panel {
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--chapter-bg) 78%, #ffffff 22%), #fff 58%),
    var(--chapter-bg);
}

.chapter.rhythm-band .chapter-panel {
  background: linear-gradient(90deg, color-mix(in srgb, var(--chapter-bg) 78%, #ffffff 22%), #fff 70%);
}

/* Adaptive density and whitespace control */
.layout-tree .chapter-panel,
.layout-timeline .chapter-panel,
.layout-checklist .chapter-panel,
.layout-swimlane .chapter-panel {
  padding: 18px 20px;
}

.layout-tree .tree {
  gap: 14px;
  align-items: center;
}

.layout-tree .tree-root {
  min-width: 210px;
  max-width: 340px;
  padding: 10px 18px;
}

.layout-tree .tree-children {
  width: min(100%, 920px);
  margin: 0 auto;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: stretch;
}

.layout-tree .tree-children.count-1 {
  width: min(100%, 520px);
  grid-template-columns: 1fr;
}

.layout-tree .tree-children.count-2 {
  width: min(100%, 760px);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.layout-tree .tree-children.count-3 {
  width: 100%;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.layout-tree .tree-node {
  min-height: 0;
  padding: 13px 14px;
}

.layout-checklist.rhythm-band .checklist-grid,
.layout-checklist .checklist-grid.count-6,
.layout-checklist .checklist-grid.count-7,
.layout-checklist .checklist-grid.count-8,
.layout-checklist .checklist-grid.count-9,
.layout-checklist .checklist-grid.count-10 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.layout-checklist .checklist-grid.count-9,
.layout-checklist .checklist-grid.count-10 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.layout-checklist .check-item {
  position: relative;
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  align-items: start;
  gap: 9px;
  min-height: 0;
  padding: 10px 13px;
  line-height: 1.52;
  white-space: normal;
  overflow-wrap: anywhere;
}

.layout-checklist .check-item::before {
  position: static;
  margin: 0;
  grid-column: 1;
  grid-row: 1;
  transform: translateY(1px);
}

.layout-checklist .check-item > * {
  min-width: 0;
}

.layout-checklist .check-text {
  grid-column: 2;
  min-width: 0;
  overflow-wrap: anywhere;
}

.layout-checklist .check-text .hl {
  display: inline;
  white-space: normal;
  word-break: normal;
}

.layout-swimlane .swimlane {
  grid-template-columns: 160px minmax(0, 1fr);
  border-radius: 9px;
  background: color-mix(in srgb, var(--border) 42%, #ffffff 58%);
  gap: 1px;
  border: 1px solid color-mix(in srgb, var(--border) 78%, #ffffff 22%);
}

.layout-swimlane .lane-label,
.layout-swimlane .lane-content {
  border: 0;
  background: #fff;
}

.layout-swimlane .lane-label {
  display: flex;
  align-items: center;
  min-height: 78px;
  background: color-mix(in srgb, var(--soft) 78%, #ffffff 22%);
  line-height: 1.35;
}

.layout-swimlane .lane-content {
  padding: 11px 14px;
}

.layout-swimlane .lane-content ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 5px 22px;
  margin: 0;
  padding-left: 18px;
}

.layout-swimlane .lane-content li {
  margin: 0;
  line-height: 1.55;
}

.layout-timeline .timeline {
  align-items: stretch;
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
}

.layout-timeline .timeline.count-2 {
  width: min(100%, 760px);
  margin: 0 auto;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.layout-timeline .timeline.count-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.layout-timeline .timeline-step {
  min-height: 0;
  padding: 14px;
}

.layout-timeline .timeline-no {
  width: 26px;
  height: 26px;
  margin-bottom: 8px;
}

.layout-timeline .timeline-title {
  margin-bottom: 8px;
  line-height: 1.35;
}

.layout-timeline .timeline-text ul {
  margin: 0;
  padding-left: 16px;
}

.layout-timeline .timeline-text li {
  margin: 4px 0;
  line-height: 1.58;
}

/* Text composition upgrade */
.content,
.structure-text,
.roadmap-text,
.timeline-text,
.formula-text,
.metric-cell,
.data-table td,
.final-strip,
.quote-box {
  text-align: left;
  word-break: normal;
  overflow-wrap: anywhere;
  text-wrap: pretty;
}

.text-flow {
  display: grid;
  gap: 7px;
  color: #232b36;
  font-size: 13px;
  line-height: 1.58;
}

.text-flow p {
  position: relative;
  margin: 0;
  padding-left: 13px;
}

.text-flow p::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--chapter);
  opacity: .72;
}

.formula-part {
  text-align: left;
  padding: 15px 16px;
}

.formula-title {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 2px 8px;
  margin-bottom: 9px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--soft) 72%, #ffffff 28%);
  font-size: 14px;
  line-height: 1.35;
}

.formula-text {
  font-size: 13px;
  line-height: 1.58;
}

.metric-grid {
  grid-template-columns: repeat(auto-fit, minmax(155px, 1fr));
}

.metric-cell {
  min-height: 118px;
  padding: 13px 12px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 6px;
}

.metric-label {
  color: #6b7280;
  font-size: 12px;
  line-height: 1.38;
  font-weight: 650;
}

.metric-cell .num {
  display: block;
  margin: 0;
  font-size: 20px;
  line-height: 1.08;
  color: var(--chapter);
  font-weight: 950;
}

.metric-note {
  margin-top: auto;
  color: #202733;
  font-size: 12.5px;
  line-height: 1.45;
  font-weight: 750;
}

.case-card .content,
.risk-card .content,
.compare-card .content,
.info-card .content {
  line-height: 1.6;
}

.case-card .content ul,
.risk-card .content ul,
.compare-card .content ul,
.info-card .content ul {
  margin-top: 8px;
  padding-left: 16px;
}

.case-card .content li,
.risk-card .content li,
.compare-card .content li,
.info-card .content li {
  margin: 4px 0;
}

/* Screenshot-style core typography */
.chapter-panel {
  padding: 20px 22px;
}

.info-card,
.case-card,
.compare-card,
.risk-card,
.split-side {
  padding: 15px 16px;
  min-height: 0;
}

.info-title,
.case-title,
.compare-title,
.risk-title,
.structure-title {
  min-height: 30px;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 68%, #ffffff 32%);
  font-size: 14px;
  line-height: 1.35;
  font-weight: 900;
}

.risk-title,
.structure-title {
  color: #202733;
}

.content,
.structure-text,
.roadmap-text,
.timeline-text,
.formula-text {
  font-size: 13px;
  line-height: 1.62;
  color: #222a35;
}

.content ul,
.structure-text ul,
.timeline-text ul {
  margin: 7px 0 0;
  padding-left: 15px;
}

.content li,
.structure-text li,
.timeline-text li {
  margin: 3px 0;
  padding-left: 1px;
}

.callout {
  margin-top: 10px;
  padding: 9px 11px;
  border-radius: 6px;
  font-size: 12.5px;
  line-height: 1.55;
  color: #28313e;
  background: color-mix(in srgb, var(--soft) 72%, #ffffff 28%);
}

.flow-col-title {
  min-height: 30px;
  padding: 7px 10px;
  font-size: 13.5px;
}

.flow-item {
  padding: 8px 11px;
  font-size: 12.8px;
  line-height: 1.48;
}

.metric-grid {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.metric-cell {
  min-height: 92px;
  padding: 13px 12px;
  gap: 5px;
}

.metric-label {
  font-size: 12px;
  line-height: 1.4;
  color: #8a9099;
}

.metric-cell .num {
  font-size: 17px;
  line-height: 1.15;
}

.metric-note {
  font-size: 12.4px;
  line-height: 1.42;
  font-weight: 800;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%) translateY(14px);
  background: #1f252d;
  color: #fff;
  padding: 10px 14px;
  border-radius: 6px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  z-index: 20;
  box-shadow: 0 10px 28px rgba(0,0,0,.2);
  font-size: 13px;
}

.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.exporting { box-shadow: none !important; max-width: none !important; }
.exporting .block-tools { display: none !important; }
.exporting [contenteditable="true"]:focus { background: transparent; box-shadow: none; }

/* 响应式：窄屏切单列，避免 400px+760px 撑破布局 */
@media (max-width: 1200px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    height: auto;
    min-height: 100vh;
    overflow: auto;
  }
  body { overflow: auto; }
  .workspace { height: auto; min-height: 480px; max-height: none; }
  .stage { padding: 16px; }
  .poster { width: 100%; min-width: 0; }
}

@media (max-width: 760px) {
  .app { padding: 8px; gap: 8px; }
  .input-area { padding: 10px; }
  .ai-grid { grid-template-columns: 1fr; }
  .source-actions { grid-template-columns: 1fr; }
  .poster { padding: 24px 16px 18px; }
  .poster-title { font-size: 24px; }
  .topbar, .preview-head { flex-wrap: wrap; }
  .actions { width: 100%; }
}