@import url("https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500;1,700&display=swap");

/*
 * LAB reference reading room
 * Reference viewport: 1920 x 1080, browser zoom 100%, OS scale 100%.
 * Every component selector is scoped to .labReadingRoom. Page-level rules use
 * body.readingExamLabMode so this skin cannot leak into the existing rooms.
 */

body.readingExamLabMode {
  margin: 0;
  overflow: hidden;
  background: #fafafa;
}

body.readingExamLabMode .topbar,
body.readingExamLabMode #calculator580Root,
body.readingExamLabMode #worldChatRoot,
body.readingExamLabMode #friendsRoot,
body.readingExamLabMode #playerLeaderboardRoot,
body.readingExamLabMode #guildRoot,
body.readingExamLabMode #dailyMissionsRoot,
body.readingExamLabMode .readingExamPager {
  display: none !important;
}

body.readingExamLabMode #app.app {
  width: 100%;
  max-width: none;
  height: 100vh;
  height: 100dvh;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  padding: 0;
}

.labReadingRoom,
.labReadingRoom *,
.labReadingRoom *::before,
.labReadingRoom *::after {
  box-sizing: border-box;
}

.labReadingRoom {
  --lab-navy: #152265;
  --lab-navy-deep: #091131;
  --lab-blue: #2381f8;
  --lab-blue-hover: #176fda;
  --lab-red: #cb1127;
  --lab-red-hover: #af0e21;
  --lab-orange: #ef8b40;
  --lab-green: #35a85d;
  --lab-ink: #202124;
  --lab-muted: #5f6368;
  --lab-line: #e5e7eb;
  --lab-soft: #f4f4f4;
  --lab-control: #e7e7e7;
  --lab-header-height: 80px;
  --lab-footer-height: 100px;
  position: relative;
  isolation: isolate;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  min-height: 0;
  display: grid;
  grid-template-rows: var(--lab-header-height) minmax(0, 1fr) var(--lab-footer-height);
  overflow: hidden;
  color: var(--lab-ink);
  background: #fafafa;
  font-family: Arial, Roboto, "Helvetica Neue", sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.45;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.labReadingRoom button,
.labReadingRoom input,
.labReadingRoom textarea,
.labReadingRoom select {
  font: inherit;
}

.labReadingRoom button {
  -webkit-tap-highlight-color: transparent;
}

.labReadingRoom button:focus-visible,
.labReadingRoom input:focus-visible,
.labReadingRoom [tabindex]:focus-visible {
  outline: 3px solid rgba(35, 129, 248, 0.3);
  outline-offset: 3px;
}

/* Header */

.labReadingRoom .labExamHeader {
  position: relative;
  z-index: 30;
  min-width: 0;
  height: var(--lab-header-height);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 24px;
  padding: 0 34px;
  border-bottom: 1px solid #dddddd;
  background: #ffffff;
}

.labReadingRoom .labExamBrand {
  min-width: 0;
  height: 100%;
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 7px;
}

.labReadingRoom .labEducationLogo {
  width: 64px;
  height: 64px;
  display: block;
  flex: 0 0 64px;
  object-fit: contain;
}

.labReadingRoom .labExamLogoMark {
  position: relative;
  width: 38px;
  height: 36px;
  display: grid;
  grid-template-columns: repeat(2, 13px);
  grid-template-rows: repeat(2, 13px);
  place-content: center;
  gap: 2px;
  transform: rotate(45deg);
}

.labReadingRoom .labExamLogoMark i {
  display: block;
  width: 13px;
  height: 13px;
  border-radius: 1px;
  background: var(--lab-red);
}

.labReadingRoom .labExamLogoMark i:nth-child(2),
.labReadingRoom .labExamLogoMark i:nth-child(3) {
  opacity: 0.72;
}

.labReadingRoom .labExamLogoText {
  color: var(--lab-red);
  font-size: 27px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.055em;
}

.labReadingRoom .labExamLogo {
  flex: 0 0 auto;
  width: 78px;
  height: 50px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 0;
  background: transparent;
  color: var(--lab-red);
  font-size: 31px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.065em;
  text-decoration: none;
}

.labReadingRoom .labExamLogo img,
.labReadingRoom img.labExamLogo {
  display: block;
  width: 78px;
  height: 50px;
  object-fit: contain;
}

.labReadingRoom .labExamIdentity {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
}

.labReadingRoom .labExamTitle {
  max-width: min(56vw, 900px);
  margin: 0;
  margin-left: 12px;
  overflow: hidden;
  color: #181818;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.labReadingRoom .labExamCode {
  margin: 2px 0 0 4px;
  color: var(--lab-red);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.015em;
}

.labReadingRoom .labExamHeaderStatus {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #5d5d5d;
  font-size: 12px;
  font-weight: 500;
}

.labReadingRoom .labExamOnlineDot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--lab-green);
  box-shadow: 0 0 0 3px rgba(53, 168, 93, 0.15);
}

/* Two independently scrolling panes */

.labReadingRoom .labExamMain {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 12px;
  padding: 24px 24px 23px;
  overflow: hidden;
  background: #fafafa;
}

.labReadingRoom .labExamPassagePane,
.labReadingRoom .labExamQuestionsPane {
  min-width: 0;
  min-height: 0;
  position: relative;
  overflow: hidden;
  border: 1px solid #ececec;
  border-radius: 9px;
  background: #ffffff;
}

.labReadingRoom .labExamPassagePane {
  border-top-right-radius: 8px;
  border-bottom-right-radius: 8px;
}

.labReadingRoom .labExamQuestionsPane {
  border-top-left-radius: 8px;
  border-bottom-left-radius: 8px;
}

.labReadingRoom .labExamPassageScroll,
.labReadingRoom .labExamQuestionsScroll {
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: scroll;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  scrollbar-color: #a7a7a7 #efefef;
  scrollbar-width: auto;
}

.labReadingRoom .labExamPassageScroll::-webkit-scrollbar,
.labReadingRoom .labExamQuestionsScroll::-webkit-scrollbar,
.labReadingRoom .labExamDrawer::-webkit-scrollbar {
  width: 10px;
}

.labReadingRoom .labExamPassageScroll::-webkit-scrollbar-track,
.labReadingRoom .labExamQuestionsScroll::-webkit-scrollbar-track,
.labReadingRoom .labExamDrawer::-webkit-scrollbar-track {
  border-left: 1px solid #e7e7e7;
  background: #f1f1f1;
}

.labReadingRoom .labExamPassageScroll::-webkit-scrollbar-thumb,
.labReadingRoom .labExamQuestionsScroll::-webkit-scrollbar-thumb,
.labReadingRoom .labExamDrawer::-webkit-scrollbar-thumb {
  min-height: 54px;
  border: 2px solid #f1f1f1;
  border-radius: 999px;
  background: #a7a7a7;
}

.labReadingRoom .labExamPassageScroll::-webkit-scrollbar-thumb:hover,
.labReadingRoom .labExamQuestionsScroll::-webkit-scrollbar-thumb:hover,
.labReadingRoom .labExamDrawer::-webkit-scrollbar-thumb:hover {
  background: #8c8c8c;
}

/* Passage typography */

.labReadingRoom .labExamPassageScroll {
  padding: 22px 24px 48px;
}

.labReadingRoom .labPassageDocument {
  width: 100%;
  margin: 0 auto;
  color: #171717;
  font-size: 18px;
  font-weight: 400;
  line-height: 1.5;
}

.labReadingRoom .labPassageDocument--text,
.labReadingRoom .labPassageDocument--images {
  min-width: 0;
}

.labReadingRoom .labPassageDocument--images {
  text-align: center;
}

.labReadingRoom .labPassageEyebrow {
  margin: 0 0 8px;
  color: #656565;
  font-size: 13px;
  font-weight: 500;
  text-align: center;
}

.labReadingRoom .labPassageTitle {
  margin: 0 0 24px;
  color: #171717;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
}

.labReadingRoom .labPassageHeading {
  margin: 0 0 24px;
  color: #171717;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
}

.labReadingRoom .labPassageError {
  margin: 0;
  padding: 22px;
  border: 1px dashed #d7989f;
  border-radius: 5px;
  background: #fff8f8;
  color: #922533;
  font-size: 15px;
  font-weight: 500;
}

.labReadingRoom .labPassageParagraph {
  margin: 0 0 26px;
  text-align: justify;
  text-indent: 0;
  overflow-wrap: break-word;
}

.labReadingRoom .labPassageParagraphNumber {
  margin-right: 8px;
  font-weight: 600;
}

.labReadingRoom .labPassageSubheading {
  margin: 23px 0 12px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
}

.labReadingRoom .labPassageNote,
.labReadingRoom .labPassageSource {
  margin: 17px 0 0;
  color: #444444;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
}

.labReadingRoom .labPassageSource {
  text-align: right;
  font-style: italic;
}

.labReadingRoom .labPassageImage {
  display: block;
  max-width: min(100%, 620px);
  height: auto;
  max-height: 420px;
  margin: 22px auto;
  object-fit: contain;
}

.labReadingRoom .labPassageFigure {
  margin: 22px auto;
  text-align: center;
}

.labReadingRoom .labPassageFigure figcaption {
  margin-top: 8px;
  color: #5d5d5d;
  font-size: 15px;
  line-height: 1.6;
}

/* Questions: deliberately cardless, matching the reference room. */

.labReadingRoom .labExamQuestionsScroll {
  padding: 22px 24px 48px;
}

.labReadingRoom .labQuestionItem {
  position: relative;
  min-width: 0;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 40px;
  align-items: start;
  gap: 22px;
  padding: 18px 0 30px;
  border: 0;
  border-bottom: 1px solid #dedede;
  background: transparent;
  box-shadow: none;
  scroll-margin: 22px 0;
}

.labReadingRoom .labQuestionItem:first-child {
  padding-top: 4px;
}

.labReadingRoom .labQuestionItem:last-child {
  padding-bottom: 18px;
  border-bottom: 0;
}

.labReadingRoom .labQuestionNumber {
  grid-column: 1;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  margin: 0 auto;
  border: 0;
  border-radius: 50%;
  background: #eeeeee;
  color: #333333;
  font-size: 16px;
  font-weight: 700;
  line-height: 1;
}

.labReadingRoom .labQuestionItem.isAnswered .labQuestionNumber {
  background: #e9f2ff;
  color: #145ead;
}

.labReadingRoom .labQuestionItem.isCurrent .labQuestionNumber {
  background: var(--lab-navy-deep);
  color: #ffffff;
}

.labReadingRoom .labQuestionContent {
  grid-column: 2;
  min-width: 0;
}

.labReadingRoom .labQuestionBookmark {
  grid-column: 3;
  grid-row: 1;
}

.labReadingRoom .labQuestionTopline {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 40px;
  align-items: start;
  gap: 16px;
}

.labReadingRoom .labQuestionStem {
  min-width: 0;
  color: #171717;
  font-size: 18px;
  font-weight: 400;
  line-height: 1.5;
  overflow-wrap: break-word;
}

.labReadingRoom .labQuestionStem > :first-child,
.labReadingRoom .labQuestionStem .contentTextBlock:first-child {
  margin-top: 0 !important;
}

.labReadingRoom .labQuestionStem > :last-child,
.labReadingRoom .labQuestionStem .contentTextBlock:last-child {
  margin-bottom: 0 !important;
}

.labReadingRoom .labQuestionStem p,
.labReadingRoom .labQuestionStem .contentTextBlock {
  margin: 0 0 10px;
  color: inherit !important;
  font: inherit !important;
  line-height: inherit !important;
}

.labReadingRoom .labQuestionStem .contentLatex,
.labReadingRoom .labQuestionStem mjx-container {
  max-width: 100%;
  color: #171717;
  font-size: 1em !important;
}

.labReadingRoom .labQuestionStem mjx-container[display="true"] {
  margin: 12px 0 !important;
}

.labReadingRoom .labQuestionImage {
  display: block;
  max-width: min(100%, 540px);
  max-height: 330px;
  height: auto;
  margin: 14px auto;
  object-fit: contain;
}

.labReadingRoom .labQuestionStem img,
.labReadingRoom .labQuestionStem .contentImage {
  display: block;
  max-width: min(100%, 540px) !important;
  max-height: 330px;
  width: auto !important;
  height: auto !important;
  margin: 14px auto !important;
  object-fit: contain;
}

.labReadingRoom .labQuestionBookmark {
  position: relative;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  outline: 0;
  background: transparent;
  color: #9a9a9a;
  font-size: 27px;
  line-height: 1;
  cursor: pointer;
  transition: color 130ms ease, background 130ms ease, transform 130ms ease;
}

.labReadingRoom .labQuestionBookmark::before {
  content: none;
}

.labReadingRoom .labQuestionBookmark svg {
  width: 25px;
  height: 25px;
  overflow: visible;
}

.labReadingRoom .labQuestionBookmark svg path {
  fill: transparent;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: fill 130ms ease, stroke 130ms ease;
}

.labReadingRoom .labQuestionBookmark:hover {
  background: #f0f0f0;
  color: var(--lab-orange);
}

.labReadingRoom .labQuestionBookmark:active {
  transform: scale(0.93);
}

.labReadingRoom .labQuestionBookmark.isMarked,
.labReadingRoom .labQuestionBookmark.isBookmarked,
.labReadingRoom .labQuestionBookmark[aria-pressed="true"] {
  color: var(--lab-orange);
}

.labReadingRoom .labQuestionBookmark.isMarked::before,
.labReadingRoom .labQuestionBookmark.isBookmarked::before,
.labReadingRoom .labQuestionBookmark[aria-pressed="true"]::before {
  content: none;
}

.labReadingRoom .labQuestionBookmark.isBookmarked svg path,
.labReadingRoom .labQuestionBookmark[aria-pressed="true"] svg path {
  fill: currentColor;
  stroke: currentColor;
}

.labReadingRoom .labQuestionBookmark[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  right: 0;
  bottom: calc(100% + 8px);
  width: max-content;
  max-width: 190px;
  padding: 7px 10px;
  border-radius: 5px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  background: #222222;
  color: #ffffff;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.25;
  pointer-events: none;
  transition: opacity 120ms ease, transform 120ms ease, visibility 120ms ease;
}

.labReadingRoom .labQuestionBookmark[data-tooltip]:hover::after,
.labReadingRoom .labQuestionBookmark[data-tooltip]:focus-visible::after {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.labReadingRoom .labQuestionAnswer {
  min-width: 0;
  margin-top: 18px;
}

.labReadingRoom .labQuestionAnswer--before {
  margin-top: 0;
  margin-bottom: 18px;
}

/* Single-choice and multiple-choice controls */

.labReadingRoom .labChoiceList {
  min-width: 0;
  display: grid;
  gap: 10px;
}

.labReadingRoom .labChoice {
  position: relative;
  min-width: 0;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  min-height: 48px;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: #171717;
  font-size: 18px;
  font-weight: 400;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  user-select: none;
}

.labReadingRoom .labChoice > input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.labReadingRoom .labChoiceControl {
  position: relative;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid #d3d3d3;
  border-radius: 50%;
  background: var(--lab-control);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.46);
  transition: border-color 120ms ease, background 120ms ease, box-shadow 120ms ease;
}

.labReadingRoom .labChoice:hover .labChoiceControl {
  border-color: #b8cef0;
  background: #edf4fc;
}

.labReadingRoom .labChoice.isSelected .labChoiceControl,
.labReadingRoom .labChoice[aria-checked="true"] .labChoiceControl,
.labReadingRoom .labChoice > input:checked + .labChoiceControl {
  border-color: var(--lab-blue);
  background: var(--lab-blue);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.labReadingRoom .labChoice:not(.isCheckbox) .labChoiceControl::after,
.labReadingRoom .labChoice.isRadio .labChoiceControl::after,
.labReadingRoom .labChoice[data-kind="radio"] .labChoiceControl::after {
  content: "";
  width: 14px;
  height: 14px;
  border-radius: 50%;
  opacity: 0;
  transform: scale(0.65);
  background: #ffffff;
  transition: opacity 120ms ease, transform 120ms ease;
}

.labReadingRoom .labChoice.isSelected:not(.isCheckbox) .labChoiceControl::after,
.labReadingRoom .labChoice.isRadio.isSelected .labChoiceControl::after,
.labReadingRoom .labChoice[data-kind="radio"][aria-checked="true"] .labChoiceControl::after,
.labReadingRoom .labChoice:not(.isCheckbox) > input:checked + .labChoiceControl::after {
  opacity: 1;
  transform: scale(1);
}

.labReadingRoom .labChoice.isCheckbox .labChoiceControl,
.labReadingRoom .labChoice[data-kind="checkbox"] .labChoiceControl {
  border-radius: 4px;
}

.labReadingRoom .labChoice.isCheckbox .labChoiceControl::after,
.labReadingRoom .labChoice[data-kind="checkbox"] .labChoiceControl::after {
  content: "";
  width: 17px;
  height: 10px;
  margin-top: -4px;
  border-bottom: 3px solid #ffffff;
  border-left: 3px solid #ffffff;
  opacity: 0;
  transform: rotate(-45deg) scale(0.65);
  transition: opacity 120ms ease, transform 120ms ease;
}

.labReadingRoom .labChoice.isCheckbox.isSelected .labChoiceControl::after,
.labReadingRoom .labChoice[data-kind="checkbox"][aria-checked="true"] .labChoiceControl::after,
.labReadingRoom .labChoice.isCheckbox > input:checked + .labChoiceControl::after,
.labReadingRoom .labChoice[data-kind="checkbox"] > input:checked + .labChoiceControl::after {
  opacity: 1;
  transform: rotate(-45deg) scale(1);
}

.labReadingRoom .labChoiceLabel {
  min-width: 0;
  overflow-wrap: break-word;
}

/* The reference controls are solid blue when selected: no inner dot/check. */
.labReadingRoom .labChoiceControl::after {
  display: none !important;
}

.labReadingRoom .labChoiceList.isSingle .labChoiceControl {
  border-radius: 50%;
}

.labReadingRoom .labChoiceList.isMultiple .labChoiceControl {
  border-radius: 4px;
}

/* True / false matrix */

.labReadingRoom .labTfTable {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 86px 86px;
  overflow: hidden;
  border: 1px solid #d8d8d8;
  border-radius: 3px;
  background: #ffffff;
  font-size: 16px;
}

.labReadingRoom .labTfHead,
.labReadingRoom .labTfRow {
  display: contents;
}

.labReadingRoom .labTfCell {
  min-width: 0;
  min-height: 55px;
  display: flex;
  align-items: center;
  padding: 10px 14px;
  border-right: 1px solid #d8d8d8;
  border-bottom: 1px solid #d8d8d8;
  line-height: 1.4;
  overflow-wrap: break-word;
}

.labReadingRoom .labTfCell:nth-child(3n) {
  border-right: 0;
}

.labReadingRoom .labTfRow:last-child .labTfCell {
  border-bottom: 0;
}

.labReadingRoom .labTfHead .labTfCell {
  min-height: 46px;
  justify-content: center;
  background: #f2f2f2;
  color: #333333;
  font-size: 15px;
  font-weight: 600;
}

.labReadingRoom .labTfHead .labTfCell:first-child {
  justify-content: flex-start;
}

.labReadingRoom .labTfCell.isControl {
  justify-content: center;
  padding: 7px;
}

.labReadingRoom .labTfButton {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid #d3d3d3;
  border-radius: 50%;
  background: var(--lab-control);
  cursor: pointer;
  transition: border-color 120ms ease, background 120ms ease;
}

.labReadingRoom .labTfButton::after {
  content: "";
  width: 13px;
  height: 13px;
  border-radius: 50%;
  opacity: 0;
  background: #ffffff;
}

.labReadingRoom .labTfButton:hover {
  border-color: #b8cef0;
  background: #edf4fc;
}

.labReadingRoom .labTfButton.isSelected,
.labReadingRoom .labTfButton[aria-checked="true"] {
  border-color: var(--lab-blue);
  background: var(--lab-blue);
}

.labReadingRoom .labTfButton.isSelected::after,
.labReadingRoom .labTfButton[aria-checked="true"]::after {
  opacity: 1;
}

/* Native table emitted by reading-room-lab.js. */
.labReadingRoom table.labTfTable {
  width: 100%;
  display: table;
  overflow: visible;
  border: 1px solid #d8d8d8;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 3px;
  table-layout: fixed;
  background: #ffffff;
  font-size: 18px;
}

.labReadingRoom .labTfTable th,
.labReadingRoom .labTfTable td {
  height: 50px;
  padding: 10px 14px;
  border: 0;
  border-right: 1px solid #d8d8d8;
  border-bottom: 1px solid #d8d8d8;
  color: #242424;
  font-weight: 400;
  line-height: 1.4;
  overflow-wrap: break-word;
  vertical-align: middle;
}

.labReadingRoom .labTfTable th {
  height: 48px;
  background: #f2f2f2;
  font-size: 16px;
  font-weight: 600;
  text-align: center;
}

.labReadingRoom .labTfTable th:first-child,
.labReadingRoom .labTfTable td:first-child {
  width: auto;
  text-align: left;
}

.labReadingRoom .labTfTable th:nth-child(2),
.labReadingRoom .labTfTable th:nth-child(3),
.labReadingRoom .labTfTable td:nth-child(2),
.labReadingRoom .labTfTable td:nth-child(3) {
  width: 86px;
  padding: 7px;
  text-align: center;
}

.labReadingRoom .labTfTable th:last-child,
.labReadingRoom .labTfTable td:last-child {
  border-right: 0;
}

.labReadingRoom .labTfTable tbody tr:last-child td {
  border-bottom: 0;
}

.labReadingRoom .labTfTable button,
.labReadingRoom .labBinaryChoices button > span {
  position: relative;
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 38px;
  padding: 0;
  border: 1px solid #d3d3d3;
  border-radius: 50%;
  background: var(--lab-control);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
  transition: border-color 120ms ease, background 120ms ease;
}

.labReadingRoom .labTfTable button {
  cursor: pointer;
}

.labReadingRoom .labTfTable button:hover,
.labReadingRoom .labBinaryChoices button:hover > span {
  border-color: #b8cef0;
  background: #edf4fc;
}

.labReadingRoom .labTfTable button.isSelected,
.labReadingRoom .labBinaryChoices button.isSelected > span {
  border-color: var(--lab-blue);
  background: var(--lab-blue);
  box-shadow: none;
}

.labReadingRoom .labTfTable button > span {
  display: none;
}

.labReadingRoom .labBinaryChoices {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 40px;
}

.labReadingRoom .labBinaryStatement {
  margin-bottom: 17px;
  color: var(--lab-ink);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.55;
}

.labReadingRoom .labBinaryChoices > button {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #171717;
  font-size: 18px;
  line-height: 1.4;
  cursor: pointer;
}

.labReadingRoom .labBinaryChoices > button b {
  font-weight: 400;
}

/* Short answers */

.labReadingRoom .labShortAnswerGroup {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px 18px;
}

.labReadingRoom .labShortAnswerRow {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px 18px;
}

.labReadingRoom .labShortInput {
  width: clamp(100px, 20vw, 160px);
  min-width: 100px;
  height: 38px;
  padding: 5px 8px 7px;
  border: 0;
  border-bottom: 2px solid #7fb3ec;
  border-radius: 0;
  outline: 0;
  background: transparent;
  color: #171717;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.3;
  text-align: center;
}

.labReadingRoom .labShortInput::placeholder {
  color: #9d9d9d;
  font-size: 15px;
  font-weight: 400;
}

.labReadingRoom .labShortInput:hover {
  border-bottom-color: #589de7;
}

.labReadingRoom .labShortInput:focus {
  border-bottom-color: var(--lab-blue);
  box-shadow: 0 5px 0 -3px rgba(35, 129, 248, 0.2);
}

.labReadingRoom .labShortInput.isInvalid {
  border-bottom-color: var(--lab-red);
}

/* Drag and drop */

.labReadingRoom .labDragInstruction {
  margin: 0 0 15px;
  color: #202020;
  font-size: 17px;
  font-weight: 700;
  font-style: italic;
  line-height: 1.4;
}

.labReadingRoom .labDragBank {
  min-height: 56px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 10px;
  border: 1px solid #d8d8d8;
  border-radius: 4px;
  background: #f7f7f7;
}

.labReadingRoom .labDragPiece {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 14px;
  border: 1px solid #b7b7b7;
  border-radius: 3px;
  background: #ffffff;
  color: #171717;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.3;
  cursor: grab;
  user-select: none;
  touch-action: none;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
  transition: border-color 120ms ease, background 120ms ease, box-shadow 120ms ease,
    transform 120ms ease;
}

.labReadingRoom .labDragPiece:hover,
.labReadingRoom .labDragPiece.isSelected {
  border-color: var(--lab-blue);
  background: #eef6ff;
  box-shadow: 0 2px 6px rgba(35, 129, 248, 0.14);
}

.labReadingRoom .labDragPiece:active,
.labReadingRoom .labDragPiece.isDragging {
  cursor: grabbing;
  transform: scale(1.02);
}

.labReadingRoom .labDragPiece.isUsed {
  display: none;
}

.labReadingRoom .labDropSlot {
  min-width: 100px;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 3px 5px;
  padding: 6px 12px;
  border: 1px dashed #929292;
  border-radius: 3px;
  background: #f4f4f4;
  color: #545454;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.3;
  vertical-align: middle;
  transition: border-color 120ms ease, background 120ms ease;
}

.labReadingRoom .labDropSlot.isOver {
  border-color: var(--lab-blue);
  background: #e9f3ff;
}

.labReadingRoom .labDropSlot.isFilled,
.labReadingRoom .labDropSlot.filled {
  border-style: solid;
  border-color: #91bcea;
  background: #eef6ff;
  color: #171717;
}

.labReadingRoom .labDragReset {
  margin-top: 11px;
  padding: 5px 0;
  border: 0;
  background: transparent;
  color: #49698f;
  font-size: 15px;
  font-weight: 500;
  text-decoration: underline;
  cursor: pointer;
}

/* Footer */

.labReadingRoom .labExamFooter {
  position: relative;
  z-index: 35;
  min-width: 0;
  height: var(--lab-footer-height);
  display: grid;
  grid-template-columns: minmax(300px, 1fr) auto auto minmax(270px, 1fr);
  align-items: center;
  gap: 16px;
  padding: 0 74px;
  border-top: 1px solid #dddddd;
  background: #ffffff;
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.035);
}

.labReadingRoom .labFooterNav {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.labReadingRoom .labExamFooterNav {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.labReadingRoom .labFooterButton {
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 20px;
  border: 1px solid var(--lab-navy);
  border-radius: 4px;
  background: var(--lab-navy);
  color: #ffffff;
  font-size: 18px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: border-color 130ms ease, background 130ms ease, opacity 130ms ease;
}

.labReadingRoom .labFooterButton:hover {
  border-color: #0f174c;
  background: #0f174c;
}

.labReadingRoom .labExamBackButton,
.labReadingRoom .labExamNextButton {
  height: 60px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 20px;
  border: 1px solid var(--lab-navy);
  border-radius: 4px;
  background: var(--lab-navy);
  color: #ffffff;
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: border-color 130ms ease, background 130ms ease, opacity 130ms ease;
}

.labReadingRoom .labExamBackButton {
  width: 60px;
  min-width: 60px;
  padding: 0;
  font-size: 28px;
}

.labReadingRoom .labExamNextButton {
  width: 132px;
  min-width: 132px;
}

.labReadingRoom .labExamBackButton:hover,
.labReadingRoom .labExamNextButton:hover {
  border-color: #0f174c;
  background: #0f174c;
}

.labReadingRoom .labExamBackButton:disabled,
.labReadingRoom .labExamBackButton.isDisabled,
.labReadingRoom .labExamNextButton:disabled,
.labReadingRoom .labExamNextButton.isDisabled {
  border-color: #bfc3cc;
  background: #bfc3cc;
  opacity: 0.72;
  cursor: not-allowed;
}

.labReadingRoom .labFooterButton.isPrevious,
.labReadingRoom .labFooterPrevious {
  width: 54px;
  min-width: 54px;
  padding: 0;
  font-size: 28px;
}

.labReadingRoom .labFooterButton.isNext,
.labReadingRoom .labFooterNext {
  min-width: 136px;
}

.labReadingRoom .labFooterButton:disabled,
.labReadingRoom .labFooterButton.isDisabled {
  border-color: #bfc3cc;
  background: #bfc3cc;
  opacity: 0.72;
  cursor: not-allowed;
}

.labReadingRoom .labFooterTimers {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 52px;
  white-space: nowrap;
}

.labReadingRoom .labTimerBlock {
  min-width: 150px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.labReadingRoom .labTimerLabel {
  color: #626262;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.25;
}

.labReadingRoom .labTimerValue {
  color: #222222;
  font-variant-numeric: tabular-nums;
  font-size: 30px;
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: 0.01em;
}

.labReadingRoom .labExamGroupTimer,
.labReadingRoom .labExamRemainingTimer {
  min-width: 150px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  white-space: nowrap;
}

.labReadingRoom .labExamGroupTimer > span,
.labReadingRoom .labExamRemainingTimer > span {
  color: #626262;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.25;
}

.labReadingRoom .labExamGroupTimer > strong,
.labReadingRoom .labExamRemainingTimer > strong {
  color: #222222;
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: 0.01em;
}

.labReadingRoom .labFooterSubmitArea {
  display: flex;
  justify-content: flex-end;
}

.labReadingRoom .labFooterSubmit {
  min-width: 204px;
  height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border: 1px solid var(--lab-red);
  border-radius: 4px;
  background: var(--lab-red);
  color: #ffffff;
  font-size: 18px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: border-color 130ms ease, background 130ms ease;
}

.labReadingRoom .labFooterSubmit:hover {
  border-color: var(--lab-red-hover);
  background: var(--lab-red-hover);
}

.labReadingRoom .labExamMenuButton {
  width: 230px;
  min-width: 230px;
  height: 62px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  justify-self: end;
  gap: 5px;
  padding: 0 24px;
  border: 1px solid var(--lab-red);
  border-radius: 4px;
  background: var(--lab-red);
  color: #ffffff;
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: border-color 130ms ease, background 130ms ease;
}

.labReadingRoom .labExamMenuButton:hover {
  border-color: var(--lab-red-hover);
  background: var(--lab-red-hover);
}

/* Scrim and right-side candidate drawer */

.labReadingRoom .labExamScrim {
  position: fixed;
  z-index: 100;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  background: rgba(0, 0, 0, 0.48);
  border: 0;
  padding: 0;
  cursor: default;
  transition: opacity 180ms ease, visibility 180ms ease;
}

.labReadingRoom .labExamScrim.isOpen,
.labReadingRoom.isDrawerOpen .labExamScrim,
.labReadingRoom .labExamScrim[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}

.labReadingRoom .labExamDrawer {
  position: fixed;
  z-index: 110;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(600px, calc(100vw - 48px));
  min-width: 0;
  padding: 30px 34px 38px;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  visibility: hidden;
  transform: translate3d(102%, 0, 0);
  background: #ffffff;
  box-shadow: -12px 0 34px rgba(0, 0, 0, 0.18);
  transition: transform 220ms cubic-bezier(0.22, 0.73, 0.28, 1), visibility 220ms ease;
}

.labReadingRoom .labExamDrawer.isOpen,
.labReadingRoom.isDrawerOpen .labExamDrawer,
.labReadingRoom .labExamDrawer[aria-hidden="false"] {
  visibility: visible;
  transform: translate3d(0, 0, 0);
}

.labReadingRoom .labDrawerHeader {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 42px;
  align-items: start;
  gap: 18px;
  padding-bottom: 22px;
  border-bottom: 1px solid #dddddd;
}

.labReadingRoom .labDrawerHeader h2 {
  margin: 0;
  color: #171717;
  font-size: 25px;
  font-weight: 700;
  line-height: 1.25;
}

.labReadingRoom .labDrawerTitle {
  margin: 0 0 8px;
  color: #171717;
  font-size: 25px;
  font-weight: 700;
  line-height: 1.25;
}

.labReadingRoom .labDrawerCandidate {
  margin: 0;
  color: #4f4f4f;
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
}

.labReadingRoom .labDrawerCandidate {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  align-items: baseline;
  gap: 14px;
  padding: 21px 0;
  border-bottom: 1px solid #dddddd;
}

.labReadingRoom .labDrawerCandidate > span {
  color: #666666;
  font-size: 16px;
  font-weight: 400;
}

.labReadingRoom .labDrawerCandidate > strong {
  min-width: 0;
  color: #242424;
  font-size: 19px;
  font-weight: 600;
  overflow-wrap: break-word;
}

.labReadingRoom .labDrawerClose,
.labReadingRoom .labModalClose {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: #242424;
  color: #ffffff;
  font-size: 27px;
  font-weight: 400;
  line-height: 1;
  cursor: pointer;
}

.labReadingRoom .labDrawerTimeRow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid #dddddd;
}

.labReadingRoom .labDrawerTimerLabel {
  color: #5b5b5b;
  font-size: 16px;
}

.labReadingRoom .labDrawerTimerValue {
  margin-top: 1px;
  color: #1f1f1f;
  font-variant-numeric: tabular-nums;
  font-size: 29px;
  font-weight: 600;
  line-height: 1.2;
}

.labReadingRoom .labDrawerTimeRow > span {
  color: #5b5b5b;
  font-size: 16px;
  font-weight: 400;
}

.labReadingRoom .labDrawerTimeRow > strong {
  margin-right: auto;
  color: #1f1f1f;
  font-variant-numeric: tabular-nums;
  font-size: 29px;
  font-weight: 600;
  line-height: 1.2;
}

.labReadingRoom #labDrawerSubmit {
  min-width: 150px;
  height: 50px;
  padding: 0 18px;
  border: 1px solid var(--lab-red);
  border-radius: 4px;
  background: var(--lab-red);
  color: #ffffff;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
}

.labReadingRoom .labDrawerSubmit {
  min-width: 150px;
  height: 50px;
  border: 1px solid var(--lab-red);
  border-radius: 4px;
  background: var(--lab-red);
  color: #ffffff;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
}

.labReadingRoom .labDrawerLegend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 20px;
  padding: 21px 0 17px;
  color: #454545;
  font-size: 15px;
}

.labReadingRoom .labDrawerLegend > span {
  flex: 0 0 100%;
  color: #343434;
  font-size: 17px;
  font-weight: 600;
}

.labReadingRoom .labDrawerLegend > i {
  min-width: 42px;
  height: 42px;
  display: inline-grid;
  place-items: center;
  border: 2px solid #cacaca;
  border-radius: 50%;
  background: #eeeeee;
  color: #484848;
  font-size: 15px;
  font-weight: 600;
  font-style: normal;
}

.labReadingRoom .labDrawerLegend > i.isBlue {
  border-color: var(--lab-blue);
  background: var(--lab-blue);
  color: #ffffff;
}

.labReadingRoom .labDrawerLegend > i.isOrange {
  border-color: var(--lab-orange);
  background: #ffffff;
  color: var(--lab-orange);
}

.labReadingRoom .labLegendItem {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.labReadingRoom .labLegendDot {
  width: 15px;
  height: 15px;
  border: 2px solid #c5c5c5;
  border-radius: 50%;
  background: #eeeeee;
}

.labReadingRoom .labLegendDot.isAnswered {
  border-color: var(--lab-blue);
  background: var(--lab-blue);
}

.labReadingRoom .labLegendDot.isCurrent {
  border-color: var(--lab-navy-deep);
  background: var(--lab-navy-deep);
}

.labReadingRoom .labLegendDot.isMarked {
  border-color: var(--lab-orange);
  background: #ffffff;
}

.labReadingRoom .labDrawerQuestionGrid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 13px 10px;
  padding: 17px 0 25px;
}

.labReadingRoom .labDrawerQuestion {
  aspect-ratio: 1;
  min-width: 0;
  display: grid;
  place-items: center;
  padding: 0;
  border: 2px solid #cacaca;
  border-radius: 50%;
  background: #eeeeee;
  color: #494949;
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: border-color 120ms ease, background 120ms ease, color 120ms ease,
    transform 120ms ease;
}

.labReadingRoom .labDrawerQuestion:hover {
  transform: translateY(-1px);
}

.labReadingRoom .labDrawerQuestion.isAnswered {
  border-color: var(--lab-blue);
  background: var(--lab-blue);
  color: #ffffff;
}

.labReadingRoom .labDrawerQuestion.isCurrent {
  border-color: var(--lab-navy-deep);
  background: var(--lab-navy-deep);
  color: #ffffff;
}

.labReadingRoom .labDrawerQuestion.isMarked {
  border: 3px solid var(--lab-orange);
}

.labReadingRoom .labDrawerQuestion.isBookmarked {
  border: 3px solid var(--lab-orange);
}

.labReadingRoom .labDrawerProgress {
  margin-top: 10px;
  padding-top: 22px;
  border-top: 1px solid #dddddd;
}

.labReadingRoom .labDrawerProgress > div:first-child {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 10px;
  color: #252525;
  font-size: 17px;
  font-weight: 500;
}

.labReadingRoom .labDrawerProgress > div:first-child strong {
  font-size: 17px;
  font-weight: 500;
}

.labReadingRoom .labDrawerProgress > div:first-child b {
  font-size: 23px;
  font-weight: 700;
}

.labReadingRoom .labDrawerProgressText {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 10px;
  color: #252525;
  font-size: 17px;
  font-weight: 500;
}

.labReadingRoom .labDrawerProgressText strong {
  font-size: 23px;
  font-weight: 700;
}

.labReadingRoom .labDrawerProgressTrack {
  width: 100%;
  height: 5px;
  overflow: hidden;
  border-radius: 999px;
  background: #e6e6e6;
}

.labReadingRoom .labDrawerProgressFill {
  width: var(--lab-progress, 0%);
  height: 100%;
  border-radius: inherit;
  background: var(--lab-red);
  transition: width 220ms ease;
}

.labReadingRoom .labDrawerProgressTrack > i {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--lab-red);
  transition: width 220ms ease;
}

.labReadingRoom .labDrawerProgressPercent {
  margin-top: 8px;
  color: #252525;
  font-size: 18px;
  font-weight: 600;
  text-align: right;
}

.labReadingRoom .labDrawerConnection {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 22px;
  color: #3f3f3f;
  font-size: 15px;
}

.labReadingRoom .labDrawerConnection::before {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--lab-green);
}

.labReadingRoom .labDrawerConnection::before {
  content: none;
}

.labReadingRoom .labDrawerConnection > i {
  width: 12px;
  height: 12px;
  flex: 0 0 12px;
  border-radius: 50%;
  background: var(--lab-green);
}

.labReadingRoom .labDrawerConnection.isOffline > i {
  background: var(--lab-red);
}

.labReadingRoom .labDrawerConnection.isOffline::before {
  background: var(--lab-red);
}

/* Submit confirmation modal */

.labReadingRoom .labSubmitModalLayer {
  position: fixed;
  z-index: 200;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  background: rgba(0, 0, 0, 0.54);
  transition: opacity 160ms ease, visibility 160ms ease;
}

.labReadingRoom .labSubmitModalLayer.isOpen,
.labReadingRoom .labSubmitModalLayer[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}

.labReadingRoom .labSubmitModal {
  position: relative;
  width: min(560px, calc(100vw - 48px));
  min-height: 404px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 42px 48px 36px;
  border-radius: 8px;
  transform: translateY(10px) scale(0.985);
  background: #ffffff;
  color: #222222;
  text-align: center;
  box-shadow: 0 24px 65px rgba(0, 0, 0, 0.28);
  transition: transform 180ms cubic-bezier(0.22, 0.73, 0.28, 1);
}

.labReadingRoom .labSubmitModalLayer.isOpen .labSubmitModal,
.labReadingRoom .labSubmitModalLayer[aria-hidden="false"] .labSubmitModal {
  transform: translateY(0) scale(1);
}

.labReadingRoom .labSubmitModal .labModalClose {
  position: absolute;
  top: 14px;
  right: 14px;
}

.labReadingRoom .labSubmitClose {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: #242424;
  color: #ffffff;
  font-size: 27px;
  font-weight: 400;
  line-height: 1;
  cursor: pointer;
}

.labReadingRoom .labSubmitCount {
  width: 92px;
  height: 92px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  border: 8px solid #ffd6b8;
  border-radius: 50%;
  background: var(--lab-orange);
  color: #ffffff;
  font-variant-numeric: tabular-nums;
  font-size: 25px;
  font-weight: 700;
  line-height: 1;
}

.labReadingRoom .labSubmitCount {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
}

.labReadingRoom .labSubmitCount > strong {
  font-size: 25px;
  font-weight: 700;
  line-height: 1;
}

.labReadingRoom .labSubmitCount > span {
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
}

.labReadingRoom .labSubmitTitle {
  margin: 0 0 10px;
  color: #222222;
  font-size: 25px;
  font-weight: 700;
  line-height: 1.3;
}

.labReadingRoom .labSubmitMessage {
  max-width: 440px;
  margin: 0;
  color: #3e3e3e;
  font-size: 20px;
  font-weight: 400;
  line-height: 1.48;
}

.labReadingRoom #labSubmitTitle {
  max-width: 440px;
  margin: 0;
  color: #3e3e3e;
  font-size: 20px;
  font-weight: 400;
  line-height: 1.48;
}

.labReadingRoom #labSubmitTitle b {
  font-weight: 700;
}

.labReadingRoom .labSubmitActions {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 30px;
}

.labReadingRoom .labSubmitAction {
  min-height: 52px;
  padding: 10px 18px;
  border: 1px solid var(--lab-navy);
  border-radius: 4px;
  background: var(--lab-navy);
  color: #ffffff;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
}

.labReadingRoom .labSubmitActions > button {
  min-height: 52px;
  padding: 10px 18px;
  border: 1px solid var(--lab-navy);
  border-radius: 4px;
  background: var(--lab-navy);
  color: #ffffff;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
}

.labReadingRoom .labSubmitActions > button.isConfirm {
  border-color: var(--lab-red);
  background: var(--lab-red);
}

.labReadingRoom .labSubmitActions > button:hover {
  filter: brightness(0.9);
}

.labReadingRoom .labSubmitActions > button:disabled {
  opacity: 0.68;
  cursor: wait;
}

.labReadingRoom .labSubmitAction.isConfirm {
  border-color: var(--lab-red);
  background: var(--lab-red);
}

.labReadingRoom .labSubmitAction:hover {
  filter: brightness(0.9);
}

/* Toast and transition loading */

.labReadingRoom .labExamToast {
  position: fixed;
  z-index: 300;
  top: 24px;
  right: 24px;
  width: min(420px, calc(100vw - 48px));
  min-height: 70px;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 28px;
  align-items: center;
  gap: 12px;
  padding: 13px 15px;
  border: 1px solid #99d5ad;
  border-left: 5px solid var(--lab-green);
  border-radius: 6px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  background: #ffffff;
  color: #1e462b;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.14);
  transition: opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
}

.labReadingRoom .labExamToast.isOpen,
.labReadingRoom .labExamToast[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.labReadingRoom .labExamToast.isError {
  border-color: #efb4ba;
  border-left-color: var(--lab-red);
  color: #79212a;
}

.labReadingRoom .labExamLoading {
  position: fixed;
  z-index: 260;
  inset: 0;
  display: grid;
  place-items: center;
  opacity: 0;
  visibility: hidden;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(2px);
  transition: opacity 140ms ease, visibility 140ms ease;
}

.labReadingRoom .labExamLoading.isOpen,
.labReadingRoom .labExamLoading[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}

.labReadingRoom .labLoadingSpinner {
  width: 54px;
  height: 54px;
  border: 5px solid #dfe5ef;
  border-top-color: var(--lab-navy);
  border-radius: 50%;
  animation: labReadingSpin 750ms linear infinite;
}

@keyframes labReadingSpin {
  to {
    transform: rotate(360deg);
  }
}

/* Content that intentionally does not exist in the LAB room. */

.labReadingRoom .readingSupportToggle,
.labReadingRoom .readingSupportBody,
.labReadingRoom .readingPaneHead,
.labReadingRoom .readingQuestionType,
.labReadingRoom .readingQuestionCardHead {
  display: none !important;
}

/* Medium desktop: preserve the 50/50 split while tightening only whitespace. */

@media (max-width: 1366px) {
  .labReadingRoom {
    --lab-header-height: 72px;
    --lab-footer-height: 92px;
    font-size: 14px;
  }

  .labReadingRoom .labExamHeader {
    padding-inline: 20px;
  }

  .labReadingRoom .labExamLogo,
  .labReadingRoom .labExamLogo img,
  .labReadingRoom img.labExamLogo {
    width: 68px;
    height: 44px;
  }

  .labReadingRoom .labExamTitle {
    font-size: 19px;
  }

  .labReadingRoom .labExamMain {
    gap: 5px;
    padding: 16px 16px 15px;
  }

  .labReadingRoom .labExamPassageScroll {
    padding: 24px 31px 54px 34px;
  }

  .labReadingRoom .labExamQuestionsScroll {
    padding: 20px 24px 54px 16px;
  }

  .labReadingRoom .labPassageDocument,
  .labReadingRoom .labQuestionStem,
  .labReadingRoom .labChoice {
    font-size: 16px;
  }

  .labReadingRoom .labQuestionItem {
    grid-template-columns: 51px minmax(0, 1fr);
    gap: 11px;
  }

  .labReadingRoom .labQuestionNumber,
  .labReadingRoom .labChoiceControl {
    width: 36px;
    height: 36px;
  }

  .labReadingRoom .labExamFooter {
    grid-template-columns: minmax(260px, 1fr) auto minmax(230px, 1fr);
    gap: 18px;
    padding-inline: 20px;
  }

  .labReadingRoom .labFooterTimers {
    gap: 30px;
  }

  .labReadingRoom .labTimerValue {
    font-size: 25px;
  }
}

/* Tablet and small laptop fallback: two panes remain independently scrollable. */

@media (max-width: 980px) {
  .labReadingRoom {
    --lab-header-height: 68px;
    --lab-footer-height: 88px;
  }

  .labReadingRoom .labExamHeaderStatus {
    display: none;
  }

  .labReadingRoom .labExamMain {
    grid-template-columns: minmax(0, 46fr) minmax(0, 54fr);
    padding: 10px;
  }

  .labReadingRoom .labExamPassageScroll {
    padding: 20px 22px 45px;
  }

  .labReadingRoom .labExamQuestionsScroll {
    padding: 18px 18px 45px 12px;
  }

  .labReadingRoom .labPassageDocument,
  .labReadingRoom .labQuestionStem,
  .labReadingRoom .labChoice {
    font-size: 14px;
  }

  .labReadingRoom .labQuestionItem {
    grid-template-columns: 43px minmax(0, 1fr);
    gap: 8px;
  }

  .labReadingRoom .labQuestionTopline {
    grid-template-columns: minmax(0, 1fr) 34px;
    gap: 8px;
  }

  .labReadingRoom .labQuestionNumber,
  .labReadingRoom .labChoiceControl,
  .labReadingRoom .labTfButton {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .labReadingRoom .labTfTable {
    grid-template-columns: minmax(0, 1fr) 60px 60px;
    font-size: 13px;
  }

  .labReadingRoom .labExamFooter {
    grid-template-columns: auto 1fr auto;
    gap: 13px;
    padding-inline: 12px;
  }

  .labReadingRoom .labFooterButton {
    height: 48px;
    padding-inline: 14px;
    font-size: 13px;
  }

  .labReadingRoom .labFooterButton.isNext,
  .labReadingRoom .labFooterNext {
    min-width: 112px;
  }

  .labReadingRoom .labFooterTimers {
    gap: 20px;
  }

  .labReadingRoom .labTimerBlock {
    min-width: 120px;
  }

  .labReadingRoom .labTimerLabel {
    font-size: 11px;
  }

  .labReadingRoom .labTimerValue {
    font-size: 21px;
  }

  .labReadingRoom .labFooterSubmit {
    min-width: 160px;
    height: 50px;
    padding-inline: 14px;
    font-size: 13px;
  }
}

/* Mobile fallback: panes stack, but the page itself remains fixed and each pane scrolls. */

@media (max-width: 720px) {
  .labReadingRoom {
    --lab-header-height: 62px;
    --lab-footer-height: 80px;
  }

  .labReadingRoom .labExamHeader {
    gap: 10px;
    padding-inline: 10px;
  }

  .labReadingRoom .labExamBrand {
    gap: 8px;
  }

  .labReadingRoom .labExamLogo,
  .labReadingRoom .labExamLogo img,
  .labReadingRoom img.labExamLogo {
    width: 48px;
    height: 36px;
    font-size: 23px;
  }

  .labReadingRoom .labExamTitle {
    max-width: calc(100vw - 86px);
    font-size: 15px;
  }

  .labReadingRoom .labExamCode {
    font-size: 10px;
  }

  .labReadingRoom .labExamMain {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(170px, 39fr) minmax(250px, 61fr);
    gap: 7px;
    padding: 7px;
  }

  .labReadingRoom .labExamPassagePane,
  .labReadingRoom .labExamQuestionsPane {
    border-radius: 8px;
  }

  .labReadingRoom .labExamPassageScroll {
    padding: 16px 17px 36px;
  }

  .labReadingRoom .labExamQuestionsScroll {
    padding: 14px 12px 36px 8px;
  }

  .labReadingRoom .labPassageDocument,
  .labReadingRoom .labQuestionStem,
  .labReadingRoom .labChoice {
    font-size: 13px;
  }

  .labReadingRoom .labPassageTitle {
    margin-bottom: 15px;
    font-size: 15px;
  }

  .labReadingRoom .labPassageParagraph {
    margin-bottom: 11px;
    text-align: left;
  }

  .labReadingRoom .labQuestionItem {
    grid-template-columns: 35px minmax(0, 1fr);
    padding: 13px 0 22px;
  }

  .labReadingRoom .labQuestionNumber {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }

  .labReadingRoom .labChoiceControl,
  .labReadingRoom .labTfButton {
    width: 29px;
    height: 29px;
  }

  .labReadingRoom .labChoice {
    grid-template-columns: 31px minmax(0, 1fr);
    gap: 8px;
  }

  .labReadingRoom .labQuestionBookmark {
    width: 32px;
    height: 32px;
    font-size: 22px;
  }

  .labReadingRoom .labTfTable {
    grid-template-columns: minmax(0, 1fr) 52px 52px;
    font-size: 14px;
  }

  .labReadingRoom .labTfCell {
    min-height: 44px;
    padding: 7px;
  }

  .labReadingRoom .labShortInput {
    width: min(100%, 300px);
    font-size: 15px;
  }

  .labReadingRoom .labDragPiece,
  .labReadingRoom .labDropSlot {
    font-size: 13px;
  }

  .labReadingRoom .labExamFooter {
    grid-template-columns: minmax(122px, auto) minmax(0, 1fr) auto;
    gap: 7px;
    padding-inline: 7px;
  }

  .labReadingRoom .labFooterNav {
    gap: 6px;
  }

  .labReadingRoom .labFooterButton {
    height: 43px;
    padding-inline: 9px;
    font-size: 11px;
  }

  .labReadingRoom .labFooterButton.isPrevious,
  .labReadingRoom .labFooterPrevious {
    width: 43px;
    min-width: 43px;
  }

  .labReadingRoom .labFooterButton.isNext,
  .labReadingRoom .labFooterNext {
    min-width: 74px;
  }

  .labReadingRoom .labFooterTimers {
    min-width: 0;
    gap: 8px;
  }

  .labReadingRoom .labTimerBlock {
    min-width: 0;
  }

  .labReadingRoom .labTimerLabel {
    max-width: 92px;
    overflow: hidden;
    font-size: 8px;
    text-align: center;
    text-overflow: ellipsis;
  }

  .labReadingRoom .labTimerValue {
    font-size: 16px;
  }

  .labReadingRoom .labFooterSubmit {
    min-width: 58px;
    width: 58px;
    height: 43px;
    padding: 0 7px;
    overflow: hidden;
    font-size: 0;
  }

  .labReadingRoom .labFooterSubmit::after {
    content: "Nộp";
    font-size: 11px;
  }

  .labReadingRoom .labExamDrawer {
    width: min(100vw, 520px);
    padding: 22px 20px 30px;
  }

  .labReadingRoom .labDrawerQuestionGrid {
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
  }

  .labReadingRoom .labSubmitModal {
    min-height: 360px;
    padding: 38px 24px 28px;
  }

  .labReadingRoom .labSubmitMessage {
    font-size: 15px;
  }
}

@media (max-width: 430px) {
  .labReadingRoom .labFooterButton.isNext,
  .labReadingRoom .labFooterNext {
    width: 58px;
    min-width: 58px;
    overflow: hidden;
    font-size: 0;
  }

  .labReadingRoom .labFooterButton.isNext::after,
  .labReadingRoom .labFooterNext::after {
    content: "Tiếp ›";
    font-size: 10px;
  }

  .labReadingRoom .labTimerBlock:first-child {
    display: none;
  }

  .labReadingRoom .labSubmitActions {
    grid-template-columns: 1fr;
  }
}

/* Renderer-specific responsive corrections (kept last to win over generic aliases). */
@media (max-width: 1366px) {
  .labReadingRoom .labQuestionItem {
    grid-template-columns: 51px minmax(0, 1fr) 38px;
  }

  .labReadingRoom .labExamFooter {
    grid-template-columns: minmax(250px, 1fr) auto auto minmax(220px, 1fr);
  }

  .labReadingRoom .labExamGroupTimer,
  .labReadingRoom .labExamRemainingTimer {
    min-width: 128px;
  }

  .labReadingRoom .labExamGroupTimer > strong,
  .labReadingRoom .labExamRemainingTimer > strong {
    font-size: 25px;
  }
}

@media (max-width: 980px) {
  .labReadingRoom .labQuestionItem {
    grid-template-columns: 43px minmax(0, 1fr) 34px;
  }

  .labReadingRoom .labExamFooter {
    grid-template-columns: auto minmax(108px, auto) minmax(108px, auto) auto;
  }

  .labReadingRoom .labExamBackButton,
  .labReadingRoom .labExamNextButton {
    height: 48px;
    padding-inline: 14px;
    font-size: 13px;
  }

  .labReadingRoom .labExamBackButton {
    width: 48px;
    min-width: 48px;
    padding: 0;
    font-size: 25px;
  }

  .labReadingRoom .labExamNextButton {
    min-width: 112px;
  }

  .labReadingRoom .labExamGroupTimer,
  .labReadingRoom .labExamRemainingTimer {
    min-width: 108px;
  }

  .labReadingRoom .labExamGroupTimer > span,
  .labReadingRoom .labExamRemainingTimer > span {
    font-size: 11px;
  }

  .labReadingRoom .labExamGroupTimer > strong,
  .labReadingRoom .labExamRemainingTimer > strong {
    font-size: 21px;
  }

  .labReadingRoom .labExamMenuButton {
    min-width: 160px;
    height: 50px;
    padding-inline: 14px;
    font-size: 13px;
  }

  .labReadingRoom .labTfTable th:nth-child(2),
  .labReadingRoom .labTfTable th:nth-child(3),
  .labReadingRoom .labTfTable td:nth-child(2),
  .labReadingRoom .labTfTable td:nth-child(3) {
    width: 60px;
  }
}

@media (max-width: 720px) {
  .labReadingRoom .labExamLogoMark {
    width: 30px;
    height: 30px;
    grid-template-columns: repeat(2, 10px);
    grid-template-rows: repeat(2, 10px);
  }

  .labReadingRoom .labExamLogoMark i {
    width: 10px;
    height: 10px;
  }

  .labReadingRoom .labExamLogoText {
    font-size: 21px;
  }

  .labReadingRoom .labExamTitle {
    max-width: min(48vw, 300px);
    margin-left: 2px;
  }

  .labReadingRoom .labExamCode {
    margin-left: 0;
  }

  .labReadingRoom .labPassageHeading {
    margin-bottom: 15px;
    font-size: 15px;
  }

  .labReadingRoom .labQuestionItem {
    grid-template-columns: 35px minmax(0, 1fr) 32px;
  }

  .labReadingRoom .labExamFooter {
    grid-template-columns: minmax(122px, auto) minmax(0, 1fr) auto;
  }

  .labReadingRoom .labExamGroupTimer {
    display: none;
  }

  .labReadingRoom .labExamBackButton,
  .labReadingRoom .labExamNextButton {
    height: 43px;
    padding-inline: 9px;
    font-size: 11px;
  }

  .labReadingRoom .labExamBackButton {
    width: 43px;
    min-width: 43px;
    padding: 0;
  }

  .labReadingRoom .labExamNextButton {
    min-width: 74px;
  }

  .labReadingRoom .labExamRemainingTimer {
    min-width: 0;
  }

  .labReadingRoom .labExamRemainingTimer > span {
    max-width: 92px;
    overflow: hidden;
    font-size: 8px;
    text-align: center;
    text-overflow: ellipsis;
  }

  .labReadingRoom .labExamRemainingTimer > strong {
    font-size: 16px;
  }

  .labReadingRoom .labExamMenuButton {
    min-width: 58px;
    width: 58px;
    height: 43px;
    padding: 0 7px;
    overflow: hidden;
    gap: 0;
    font-size: 0;
  }

  .labReadingRoom .labExamMenuButton span:first-child {
    display: none;
  }

  .labReadingRoom .labExamMenuButton span:last-child::after {
    content: "Nộp";
    font-size: 11px;
  }

  .labReadingRoom .labTfTable th,
  .labReadingRoom .labTfTable td {
    height: 44px;
    padding: 7px;
    font-size: 12px;
  }

  .labReadingRoom .labTfTable th:nth-child(2),
  .labReadingRoom .labTfTable th:nth-child(3),
  .labReadingRoom .labTfTable td:nth-child(2),
  .labReadingRoom .labTfTable td:nth-child(3) {
    width: 52px;
  }

  .labReadingRoom .labTfTable button,
  .labReadingRoom .labBinaryChoices button > span {
    width: 29px;
    height: 29px;
    flex-basis: 29px;
  }

  .labReadingRoom .labBinaryChoices > button {
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .labReadingRoom *,
  .labReadingRoom *::before,
  .labReadingRoom *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  body.readingExamLabMode {
    overflow: visible;
  }

  .labReadingRoom {
    display: block;
    height: auto;
    overflow: visible;
  }

  .labReadingRoom .labExamHeader,
  .labReadingRoom .labExamFooter,
  .labReadingRoom .labExamDrawer,
  .labReadingRoom .labExamScrim,
  .labReadingRoom .labSubmitModalLayer,
  .labReadingRoom .labExamToast {
    display: none !important;
  }

  .labReadingRoom .labExamMain {
    display: block;
    padding: 0;
    overflow: visible;
  }

  .labReadingRoom .labExamPassagePane,
  .labReadingRoom .labExamQuestionsPane,
  .labReadingRoom .labExamPassageScroll,
  .labReadingRoom .labExamQuestionsScroll {
    height: auto;
    overflow: visible;
    border: 0;
  }
}

/* Final reading-room alignment with the 1920 x 1080 reference. */

.labReadingRoom .labQuestionStem .labQuestionInstruction {
  margin-bottom: 8px !important;
  font-size: 17px !important;
  font-weight: 700 !important;
  line-height: 26px !important;
}

.labReadingRoom .labQuestionStem .labQuestionTask {
  font-size: 18px !important;
  font-weight: 400 !important;
  line-height: 30px !important;
}

.labReadingRoom .labExamFooter {
  grid-template-columns: max-content max-content minmax(24px, 1fr) max-content max-content;
  grid-template-areas: "navigation question-time . remaining-time menu";
  gap: 16px;
}

.labReadingRoom .labExamFooterNav {
  grid-area: navigation;
}

.labReadingRoom .labExamGroupTimer {
  grid-area: question-time;
  justify-self: start;
}

.labReadingRoom .labExamRemainingTimer {
  grid-area: remaining-time;
  justify-self: end;
}

.labReadingRoom .labExamMenuButton {
  grid-area: menu;
}

@media (max-width: 980px) {
  .labReadingRoom .labExamFooter {
    grid-template-columns: max-content max-content minmax(12px, 1fr) max-content max-content;
    gap: 10px;
  }

  .labReadingRoom .labExamGroupTimer,
  .labReadingRoom .labExamRemainingTimer {
    min-width: 96px;
  }
}

@media (max-width: 1366px) {
  .labReadingRoom .labEducationLogo {
    width: 56px;
    height: 56px;
    flex-basis: 56px;
  }

  .labReadingRoom .labQuestionStem .labQuestionInstruction,
  .labReadingRoom .labQuestionStem .labQuestionTask {
    font-size: 16px !important;
    line-height: 1.5 !important;
  }
}

@media (max-width: 980px) {
  .labReadingRoom .labQuestionStem .labQuestionInstruction,
  .labReadingRoom .labQuestionStem .labQuestionTask {
    font-size: 14px !important;
    line-height: 1.5 !important;
  }
}

@media (max-width: 720px) {
  .labReadingRoom .labEducationLogo {
    width: 46px;
    height: 46px;
    flex-basis: 46px;
  }

  .labReadingRoom .labQuestionStem .labQuestionInstruction,
  .labReadingRoom .labQuestionStem .labQuestionTask {
    font-size: 13px !important;
    line-height: 1.5 !important;
  }

  .labReadingRoom .labExamFooter {
    grid-template-columns: max-content max-content minmax(2px, 1fr) max-content max-content;
    gap: 4px;
    padding-inline: 6px;
  }

  .labReadingRoom .labExamFooterNav {
    gap: 4px;
  }

  .labReadingRoom .labExamGroupTimer,
  .labReadingRoom .labExamRemainingTimer {
    min-width: 42px;
    display: flex;
  }

  .labReadingRoom .labExamGroupTimer > span,
  .labReadingRoom .labExamRemainingTimer > span {
    display: none;
  }

  .labReadingRoom .labExamGroupTimer > strong,
  .labReadingRoom .labExamRemainingTimer > strong {
    font-size: 14px;
  }

  .labReadingRoom .labExamBackButton {
    width: 38px;
    min-width: 38px;
  }

  .labReadingRoom .labExamNextButton {
    min-width: 68px;
  }

  .labReadingRoom .labExamMenuButton {
    width: 52px;
    min-width: 52px;
  }
}