/* Fixed 79th/81st-edition reading presentation only. Load after the existing textbook CSS.
   No source bytes, answer policy, readiness gate, image pixels or game chrome change. */
html body :is(#privateTextbook,#eraFullSummary):has(.history-notes-design:is([data-history-edition="79"],[data-history-edition="81"])) {
  --paper: #dfe8e2;
  --ink: #24372c;
  --muted: #485e51;
  --line: #a0b3a7;
  background-color: var(--paper) !important;
  color: var(--ink) !important;
  border: 0;
  box-shadow: none;
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) {
  --hn-paper: #dfe8e2;
  --hn-surface: #d0ddd4;
  --hn-ink: #24372c;
  --hn-muted: #485e51;
  --hn-accent: #285d46;
  --hn-rule: #a0b3a7;
  --hn-control-rule: #6b8574;
  --hn-body-size: 17px;
  --hn-section-size: 22px;
  --hn-subsection-size: 20px;
  --textbook-semantic-blue: #285d46;
  box-sizing: border-box;
  min-width: 0;
  max-width: 100%;
  background-color: var(--hn-paper) !important;
  color: var(--hn-ink) !important;
  font-size: var(--hn-body-size);
  line-height: 1.7;
  overflow-wrap: anywhere;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}
/* The authenticated source summary uses its own host, but the same reading
   surface and sans-serif stack as concept and workbook pages. */
html body #eraFullSummary .textbook-source-summary.history-notes-design,
html body #eraFullSummary .textbook-source-summary.history-notes-design * {
  font-family: Arial, "Helvetica Neue", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif !important;
  letter-spacing: normal;
}
html body :is(#privateTextbook,#eraFullSummary) > .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) {
  width: 100%;
  max-width: 1080px;
  margin-inline: auto;
  padding: 24px 20px;
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :is(.textbook-semantic-library-content,.textbook-semantic-content,.textbook-source-list,.textbook-source-review) {
  width: 100%;
  max-width: 720px;
  min-width: 0;
  margin-inline: auto;
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :is(.textbook-reader-page,.textbook-semantic-table-scroll,.textbook-source-quiz-item,.textbook-semantic-exercises) {
  border-radius: 0;
  border-color: var(--hn-rule) !important;
  box-shadow: none;
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-reader-page {
  margin-block: 24px 0;
  padding-block: 16px 0;
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-reader-page:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :is(.textbook-semantic-heading,.textbook-source-quiz-title,.textbook-joseon-heading) {
  color: var(--hn-ink);
  font-weight: 700;
  line-height: 1.4;
  margin: 24px 0 8px;
  break-after: avoid;
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-source-quiz-title { margin-top: 0; font-size: 28px; }
/* Source PDF span sizes are metadata. Reading hierarchy comes from the block
   role; inline emphasis inherits its paragraph, cell or heading size. Keep
   coordinate diagrams' own 16px canvas geometry and source ink untouched. */
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :is(h1,h2).textbook-semantic-heading {
  font-size: var(--hn-section-size);
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :is(h3,h4,h5,h6).textbook-semantic-heading {
  font-size: var(--hn-subsection-size);
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :is(.textbook-semantic,.textbook-semantic-table,.textbook-semantic-prompt,.textbook-semantic-answer p) {
  font-size: var(--hn-body-size);
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-line,
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-line > :is(span,strong) {
  font-size: inherit;
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :is(.textbook-source-branch-graph,.textbook-source-branch-context,.textbook-source-branch-cause) {
  font-size: 16px;
  line-height: 1.5;
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :is(.textbook-semantic-text,.textbook-semantic-table td,.textbook-semantic-table th,.textbook-source-quiz-statement) {
  font-size: var(--hn-body-size);
  line-height: 1.7;
  color: var(--hn-ink);
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-text { margin-block: 8px 12px; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-heading + .textbook-semantic-text { margin-top: 4px; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-table-scroll { margin-block: 12px; border: 0; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-table :is(td,th) {
  padding: 10px 12px;
  border-color: var(--hn-rule) !important;
}
/* Verified source ink, highlights, diagram shading and source spans retain
   their existing styles. Only ordinary label cells receive the design tint. */
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-table[data-history-label-content] th:not([class*="textbook-source-"]) {
  background-color: var(--hn-surface) !important;
  font-weight: 600;
}
/* Source cell roles outrank both the generic header tint and the mobile reflow. */
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-table[data-history-label-content] :is(th,td).textbook-source-shading-yellow { background-color: #fff09b !important; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-table[data-history-label-content] :is(th,td).textbook-source-shading-green { background-color: #d5f2b8 !important; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-table[data-history-label-content] :is(th,td).textbook-source-shading-blue { background-color: #c3ecf9 !important; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-table[data-history-label-content] :is(th,td).textbook-source-shading-peach { background-color: #f5d5bf !important; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-table[data-history-label-content] :is(th,td).textbook-source-shading-pink { background-color: #f1d4f0 !important; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-row-annotation {
  margin: 4px 0 0;
  padding: 4px 0;
  border: 0;
  border-radius: 0;
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-row-annotation.textbook-semantic-table-group { width: min(100%,340px); margin-top: 12px; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-semantic-row-annotation .textbook-semantic-table :is(td,th) { padding: 5px 8px; line-height: 1.5; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :is(.textbook-joseon-section,.textbook-joseon-review) { margin: 0; padding: 0; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :is(.textbook-joseon-section-common,.textbook-joseon-review-common) {
  margin-block: 24px;
  padding-block: 12px;
  border-block: 1px solid var(--hn-rule) !important;
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-joseon-subtopic { font-size: 18px; line-height: 1.5; margin: 20px 0 6px; color: var(--hn-accent); }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-source-quiz-item { padding-block: 12px; margin: 0; border-inline: 0; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :is(.textbook-source-quiz-item-source,.textbook-source-quiz-reference,.textbook-status) { font-size: 13px; line-height: 1.54; color: var(--hn-muted) !important; }
/* Hide repeated generic instructions/counts, never source instructions,
   validation feedback, save failures, retry controls or actual question text. */
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]).textbook-source-continuous > .textbook-source-quiz-help { display: none; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :is(button,input,textarea,select) {
  background-color: var(--hn-surface) !important;
  color: var(--hn-ink) !important;
  border-color: var(--hn-control-rule) !important;
  accent-color: var(--hn-accent);
  caret-color: var(--hn-accent);
  font-size: 16px;
  min-height: 44px;
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :is(button:hover,button[aria-selected="true"]) { background-color: #bdcfc3 !important; color: var(--hn-ink) !important; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-source-quiz-input {
  width: 8em;
  max-width: 100%;
  border-radius: 2px;
  padding: 6px 8px;
}
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) :focus-visible { outline: 3px solid var(--hn-accent); outline-offset: 3px; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) [hidden] { display: none !important; }
@media (max-width: 600px) {
  /* Keep the source's row/column relationship on phones as well. Only simple
     two-column label/content tables opt in; merged grids and diagrams retain
     their existing internal scrolling and source-defined column widths. */
  html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) table[data-history-label-content] { table-layout: fixed; }
  html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) table[data-history-label-content] > tbody > tr > :is(th,td) { padding: 10px 8px; line-height: 1.7; }
  html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) table[data-history-label-content] > tbody > tr > th { font-size: var(--hn-body-size); font-weight: 700; }
  html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-source-exam-panel col:first-child { width: 24% !important; }
  html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-source-exam-panel col:last-child { width: 76% !important; }
  html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-source-exam-panel th[scope="row"] { padding-inline: 8px; overflow-wrap: normal; word-break: keep-all; }
}
@media (min-width: 900px) {
  html body :is(#privateTextbook,#eraFullSummary) > .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) { padding: 32px; }
  html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-source-quiz-title { font-size: 32px; }
}

/* Workbook save feedback stays readable on paper under the world's dark theme. */
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-source-quiz-status { color: var(--hn-muted) !important; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-source-quiz-status[data-result="match"] { color: #176037 !important; }
html body :is(#privateTextbook,#eraFullSummary) .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-source-quiz-status:is([data-result="different"],[data-result="empty"]) { color: #864500 !important; }

/* Source summaries live outside #privateTextbook. Clear the terminal theme's
   blanket backgrounds only inside this authenticated, generated reading view.
   Legacy 79th-edition summaries and original source ink remain untouched. */
html body #eraFullSummary .textbook-source-summary.history-notes-design :is(div,section,article,table,thead,tbody,tr,th,td) {
  background-color: transparent !important;
  background-image: none !important;
  color: var(--hn-ink) !important;
  border-color: var(--hn-rule) !important;
}
html body #eraFullSummary .textbook-source-summary.history-notes-design :is(h2,p,span,strong) {
  color: var(--hn-ink) !important;
}
html body #eraFullSummary .textbook-source-summary.history-notes-design .textbook-status {
  color: var(--hn-muted) !important;
}

html body #privateTextbook .history-notes-design:is([data-history-edition="79"],[data-history-edition="81"]) .textbook-source-quiz-instruction { color:var(--hn-ink) !important; background:transparent; }