:root {
  color-scheme: light;
  --bg: #eef1f5;
  --surface: #ffffff;
  --surface-2: #f7f9fb;
  --text: #17202a;
  --muted: #657386;
  --line: #d6dde6;
  --accent: #176b87;
  --accent-2: #d96c2c;
  --accent-soft: #e7f4f7;
  --warn-soft: #fff4df;
  --shadow: 0 10px 28px rgba(28, 45, 68, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
  letter-spacing: 0;
}

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

button {
  border: 0;
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: 292px minmax(0, 1fr);
  min-height: 100vh;
  transition: grid-template-columns 180ms ease;
}

.app-shell.sidebar-collapsed {
  grid-template-columns: 0 minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  min-height: 100vh;
  background: #102331;
  color: #fff;
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: padding 180ms ease;
}

.sidebar-toggle {
  position: absolute;
  top: 18px;
  right: -14px;
  z-index: 5;
  width: 28px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 8px;
  background: #fff;
  color: #102331;
  box-shadow: 0 6px 16px rgba(28, 45, 68, 0.18);
  font-weight: 900;
}

.brand {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  align-items: center;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #fff;
  color: #102331;
  font-weight: 800;
  font-size: 24px;
}

.brand h1 {
  font-size: 20px;
  margin: 0;
}

.brand p {
  color: #b9c7d4;
  font-size: 12px;
  margin: 3px 0 0;
}

.status-pill {
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: #d8f3fa;
  border-radius: 999px;
  padding: 8px 10px;
  font-size: 12px;
}

.tabs {
  display: grid;
  gap: 8px;
}

.tab {
  min-height: 42px;
  text-align: left;
  color: #d9e3ea;
  background: transparent;
  border-radius: 8px;
  padding: 0 12px;
}

.tab.active,
.tab:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.app-shell.sidebar-collapsed .sidebar {
  width: 0;
  min-width: 0;
  padding: 0;
  gap: 0;
  overflow: visible;
  background: transparent;
}

.app-shell.sidebar-collapsed .brand,
.app-shell.sidebar-collapsed .brand > div:not(.brand-mark),
.app-shell.sidebar-collapsed .status-pill,
.app-shell.sidebar-collapsed .tabs,
.app-shell.sidebar-collapsed .source-box {
  display: none;
}

.app-shell.sidebar-collapsed .sidebar-toggle {
  display: none;
}

.source-box {
  margin-top: auto;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.06);
}

.source-title {
  font-weight: 700;
  margin-bottom: 8px;
}

.source-box p {
  margin: 0;
  color: #c6d2dd;
  font-size: 13px;
  line-height: 1.55;
}

main {
  padding: 24px;
  min-width: 0;
}

.app-shell.sidebar-collapsed main {
  padding-left: 24px;
}

.inline-sidebar-toggle {
  display: none;
  min-width: 34px;
  width: 34px;
  min-height: 34px;
  padding: 0;
  border: 1px solid #d6dde6;
  border-radius: 8px;
  background: #fff;
  color: #102331;
  box-shadow: 0 6px 14px rgba(28, 45, 68, 0.14);
  font-weight: 900;
}

.app-shell.sidebar-collapsed .inline-sidebar-toggle {
  display: inline-grid;
  place-items: center;
}

.inline-sidebar-toggle:not(.global-sidebar-toggle) {
  display: none !important;
}

.global-sidebar-toggle {
  position: fixed;
  left: 12px;
  top: 12px;
  z-index: 40;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.view-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

#single > .view-head {
  position: sticky;
  top: 0;
  z-index: 9;
  display: grid;
  grid-template-columns: minmax(150px, 1fr) auto auto;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

#single > .view-head p {
  display: none;
}

#single > .view-head h2 {
  margin: 0;
  font-size: 24px;
  line-height: 1.2;
}

.single-sticky-timer {
  flex: 0 0 auto;
}

h2,
h3,
p {
  margin-top: 0;
}

h2 {
  font-size: 26px;
  margin-bottom: 6px;
}

.view-head p {
  color: var(--muted);
  margin-bottom: 0;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 16px;
  min-width: 0;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

#single .panel-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
}

#singleTitle {
  min-width: 76px;
  margin: 0;
  white-space: nowrap;
}

.panel-head h3 {
  margin: 0;
  font-size: 16px;
}

.panel-tools {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.small-button {
  min-height: 32px;
  padding: 0 10px;
}

.field-label {
  display: block;
  margin: 12px 0 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

select,
textarea,
.text-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
}

select,
.text-input {
  min-height: 38px;
  padding: 0 10px;
}

.spaced {
  margin-top: 10px;
}

textarea {
  min-height: 260px;
  resize: vertical;
  padding: 12px;
  line-height: 1.55;
}

.short-textarea {
  min-height: 150px;
  margin-top: 10px;
}

.exam-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 16px;
}

.bank-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(320px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.exam-quick-nav {
  position: sticky;
  top: 0;
  z-index: 8;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.exam-quick-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.exam-quick-nav a {
  position: relative;
  min-height: 34px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  text-decoration: none;
}

.exam-quick-timer {
  margin-left: auto;
}

#exam > .view-head .timer {
  display: none;
}

.exam-section {
  scroll-margin-top: 76px;
}

.exam-section > h2 {
  margin: 0 0 12px;
  font-size: 20px;
}

.section-title-with-note {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.section-title-with-note span {
  color: #64748b;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.45;
}

.exam-quick-nav a.active {
  color: #fff;
  background: var(--accent);
}

body.immersive-mode main {
  padding: 6px 8px 8px;
  background: #edf1f5;
}

body.immersive-mode .view.active > .view-head,
body.immersive-mode .view.active > .actions,
body.immersive-mode .view.active > .single-filters,
body.immersive-mode .view.active > .feedback,
body.immersive-mode .exam-submit-row {
  display: none;
}

body.immersive-mode .exam-grid {
  gap: 6px;
  margin-top: 0;
}

body.immersive-mode .exam-quick-nav {
  top: 0;
  border-radius: 8px;
  margin-bottom: 6px;
  padding: 8px 10px;
  border-color: #d5dee7;
  box-shadow: 0 3px 10px rgba(39, 55, 72, 0.08);
}

body.immersive-mode .exam-section {
  display: none;
}

body.immersive-mode .exam-section.focused-section {
  display: block;
  min-height: calc(100vh - 96px);
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

body.immersive-mode .exam-section.focused-section > h2,
body.immersive-mode .exam-section.focused-section .module-meta,
body.immersive-mode .exam-section.focused-section > h3,
body.immersive-mode .exam-section.focused-section .compact-notice {
  display: none;
}

body.immersive-mode .exam-section.focused-section .pdf-pages {
  margin: 0;
  height: calc(100vh - 104px);
  border: 0;
  border-radius: 0;
  background: transparent;
}

body.immersive-mode .exam-section.focused-section .pdf-study-layout {
  height: 100%;
  grid-template-columns: minmax(0, 82fr) minmax(250px, 18fr);
  gap: 8px;
  padding: 0;
  background: transparent;
}

body.immersive-mode .exam-section.focused-section .pdf-scroll-box,
body.immersive-mode .exam-section.focused-section .paper-answer-scroll {
  max-height: none;
  height: 100%;
}

body.immersive-mode .exam-section.focused-section .pdf-scroll-box {
  border: 0;
  border-radius: 0;
  background: transparent;
}

body.immersive-mode .exam-section.focused-section .pdf-page-list {
  gap: 6px;
  padding: 0;
  background: transparent;
}

body.immersive-mode .exam-section.focused-section .pdf-page {
  border: 0;
  border-radius: 0;
  background: #fff;
  box-shadow: 0 1px 6px rgba(35, 49, 66, 0.12);
}

body.immersive-mode .exam-section.focused-section .pdf-page figcaption {
  display: none;
}

body.immersive-mode .exam-section.focused-section .pdf-page-image-wrap {
  border: 0;
}

body.immersive-mode .exam-section.focused-section .paper-answer-scroll {
  gap: 6px;
  padding: 8px 8px 10px;
  border: 0;
  border-radius: 0;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: -2px 0 10px rgba(35, 49, 66, 0.08);
}

body.immersive-mode .exam-section.focused-section .paper-answer-groups {
  gap: 8px;
}

body.immersive-mode .exam-section.focused-section .paper-answer-group {
  gap: 5px;
}

body.immersive-mode .exam-section.focused-section .paper-answer-group-title {
  position: sticky;
  top: -8px;
  z-index: 2;
  margin: 0 -8px 2px;
  padding: 6px 8px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid #e2e8ef;
  color: #263544;
  font-size: 12px;
}

body.immersive-mode .exam-section.focused-section .paper-audio-row {
  gap: 4px;
  padding: 6px;
  border: 0;
  border-radius: 6px;
  background: #edf3f6;
}

body.immersive-mode .exam-section.focused-section .paper-audio-row audio {
  height: 28px;
}

body.immersive-mode .exam-section.focused-section .paper-answer-grid {
  gap: 5px;
}

body.immersive-mode .exam-section.focused-section .paper-answer-row {
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 5px;
}

body.immersive-mode .exam-section.focused-section .paper-answer-row span {
  width: 22px;
  height: 22px;
  background: transparent;
  color: #126d80;
}

body.immersive-mode .exam-section.focused-section .paper-answer-input {
  min-height: 28px;
  height: 28px;
  border: 0;
  border-bottom: 1px solid #b9c7d4;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  padding: 0 4px;
}

body.immersive-mode .exam-section.focused-section .paper-answer-input:focus {
  border-bottom-color: var(--accent);
  box-shadow: 0 1px 0 var(--accent);
}

.exam-submit-row {
  display: flex;
  justify-content: flex-end;
  padding: 12px 0 4px;
}

.report-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  margin-top: 12px;
  padding: 0 14px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}

.timer {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
}

#examTimer {
  font-variant-numeric: tabular-nums;
  font-size: 22px;
  min-width: 106px;
}

.icon-btn {
  min-width: 58px;
  height: 34px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
}

.primary,
.secondary,
.module-btn {
  min-height: 40px;
  border-radius: 8px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.primary {
  background: var(--accent);
  color: #fff;
}

.button-link {
  text-decoration: none;
}

.secondary,
.module-btn {
  background: #e9eef3;
  color: #25313e;
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.listening-player {
  width: 100%;
  margin: 8px 0 4px;
}

.audio-list {
  display: grid;
  gap: 8px;
  margin: 8px 0;
}

.audio-list label {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.source-inline {
  color: var(--accent);
  margin-left: 8px;
}

.bulk-import {
  margin-top: 18px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.bulk-import h4 {
  margin: 0 0 6px;
}

.bulk-import p {
  color: var(--muted);
  line-height: 1.5;
  margin-bottom: 8px;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 8px;
}

#single .segmented {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
}

#single .module-btn {
  min-width: 64px;
  min-height: 38px;
}

.single-filters {
  display: grid;
  grid-template-columns: repeat(3, minmax(140px, 1fr));
  gap: 8px;
  margin: 0 0 12px;
}

.module-btn.active {
  background: var(--accent);
  color: #fff;
}

.module-meta {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 8px;
}

.prompt-text,
.passage {
  line-height: 1.7;
  font-size: 16px;
}

.passage {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 14px;
}

.task-data,
.hidden-text {
  white-space: pre-wrap;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  color: #304050;
}

.question-paper {
  margin: 14px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-2);
}

.question-paper summary {
  cursor: pointer;
  padding: 10px 12px;
  font-weight: 700;
}

.question-paper pre {
  margin: 0;
  max-height: 520px;
  overflow: auto;
  border-top: 1px solid var(--line);
  padding: 12px;
  white-space: pre-wrap;
  font-family: Consolas, "Courier New", monospace;
  font-size: 13px;
  line-height: 1.55;
  color: #263544;
}

.pdf-pages {
  margin: 14px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-2);
}

.pdf-pages summary {
  cursor: pointer;
  padding: 10px 12px;
  font-weight: 700;
}

.pdf-page-list {
  display: grid;
  gap: 14px;
  padding: 12px;
  background: #f6f8fb;
}

.pdf-study-layout {
  display: grid;
  grid-template-columns: minmax(0, 82fr) minmax(176px, 18fr);
  gap: 12px;
  align-items: stretch;
  padding: 12px;
  background: #e9eef4;
}

.pdf-study-layout .pdf-page-list {
  padding: 10px;
  border-top: 0;
}

.pdf-scroll-box,
.paper-answer-scroll {
  min-width: 0;
  max-height: min(78vh, 760px);
  overflow: auto;
  border: 1px solid #c8d4df;
  border-radius: 8px;
  background: #f6f8fb;
}

.paper-answer-scroll {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 10px;
  background: #fff;
}

.paper-side-title,
.paper-answer-group-title {
  color: #48586a;
  font-size: 12px;
  font-weight: 800;
}

.paper-audio-block,
.paper-answer-group {
  display: grid;
  gap: 7px;
}

.paper-audio-list,
.paper-answer-groups {
  display: grid;
  gap: 10px;
}

.paper-audio-row {
  display: grid;
  gap: 5px;
  border: 1px solid #d6dde6;
  border-radius: 8px;
  background: #f6f8fb;
  padding: 7px;
}

.paper-audio-row span {
  color: #25313e;
  font-size: 12px;
  font-weight: 800;
}

.paper-audio-row audio {
  width: 100%;
  min-width: 150px;
  height: 30px;
}

.paper-answer-grid {
  display: grid;
  gap: 7px;
}

.paper-answer-row {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 6px;
  align-items: center;
}

.paper-answer-row span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
}

.paper-answer-input {
  min-height: 30px;
  height: 30px;
  border-color: #b7c6d4;
  border-radius: 6px;
  padding: 0 7px;
  font-size: 13px;
}

.pdf-page {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  overflow: hidden;
}

.pdf-page-body {
  position: relative;
  display: block;
  background: #fff;
}

.pdf-page-with-card {
  display: grid;
  grid-template-columns: minmax(0, 82fr) minmax(150px, 18fr);
  gap: 12px;
  align-items: start;
  padding: 10px;
  background: #f7f9fb;
}

.pdf-page:not(.has-page-answers) .pdf-page-body {
  display: block;
}

.pdf-page figcaption {
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.pdf-page img {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
}

.pdf-page-image-wrap {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
}

.pdf-page:not(.has-page-answers) .pdf-page-image-wrap {
  border: 0;
}

.page-answer-card {
  position: sticky;
  top: 12px;
  display: grid;
  gap: 8px;
  align-self: start;
  max-height: calc(100vh - 128px);
  overflow: auto;
  border: 1px solid #c8d4df;
  border-radius: 8px;
  background: #fff;
  padding: 10px;
  box-shadow: 0 8px 18px rgba(28, 45, 68, 0.08);
}

.page-answer-card-title {
  color: #25313e;
  font-size: 13px;
  font-weight: 800;
}

.page-card-answer-list {
  display: grid;
  gap: 7px;
}

.page-card-answer {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 6px;
  align-items: center;
}

.page-card-answer span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
}

.page-card-input {
  min-height: 30px;
  height: 30px;
  border-color: #b7c6d4;
  border-radius: 6px;
  padding: 0 7px;
  font-size: 13px;
}

.page-card-audio {
  display: grid;
  grid-template-columns: auto minmax(112px, 1fr);
  gap: 6px;
  align-items: center;
  border: 1px solid #d6dde6;
  border-radius: 8px;
  background: #f6f8fb;
  padding: 6px;
}

.page-card-audio span {
  color: #25313e;
  font-size: 11px;
  font-weight: 800;
  white-space: nowrap;
}

.page-card-audio audio {
  width: 100%;
  min-width: 112px;
  height: 28px;
}

.page-card-empty {
  color: var(--muted);
  font-size: 12px;
}

.reading-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin: 14px 0;
}

.reading-pane {
  min-width: 0;
  max-height: 82vh;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f6f8fb;
}

.reading-pane .pdf-pages {
  margin: 0;
  border: 0;
  border-radius: 0;
}

.reading-pane .pdf-page-list {
  padding: 10px;
}

.reading-passage-pane .page-answer-layer {
  display: none;
}

.page-answer-layer {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.page-answer-cell {
  display: grid;
  grid-template-columns: 16px 86px;
  gap: 3px;
  align-items: center;
  position: absolute;
  transform: translateY(-50%);
  pointer-events: auto;
}

.page-answer-blank {
  transform: translate(-19px, -50%);
}

.page-side-answer {
  transform: none;
}

.page-bottom-answer {
  transform: none;
}

.page-answer-cell span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(23, 107, 135, 0.35);
  color: #176b87;
  font-size: 10px;
  font-weight: 800;
  box-shadow: 0 2px 5px rgba(36, 48, 63, 0.1);
}

.page-answer-cell input {
  width: 86px;
  min-height: 20px;
  height: 20px;
  border-color: rgba(23, 107, 135, 0.62);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 2px 6px rgba(36, 48, 63, 0.1);
  font-size: 11px;
  line-height: 16px;
  padding: 1px 5px;
}

.page-answer-choice {
  grid-template-columns: 14px 38px;
  gap: 2px;
}

.page-answer-choice span {
  width: 14px;
  height: 16px;
  font-size: 9px;
}

.page-answer-choice input {
  width: 38px;
  min-height: 18px;
  height: 18px;
  text-align: center;
  padding: 1px 3px;
}

.page-audio-overlay {
  position: absolute;
  right: 10px;
  top: 10px;
  z-index: 4;
  display: grid;
  grid-template-columns: auto 240px;
  gap: 8px;
  align-items: center;
  max-width: 310px;
  border: 1px solid rgba(146, 161, 178, 0.6);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 5px 14px rgba(36, 48, 63, 0.12);
  backdrop-filter: blur(4px);
  padding: 5px 8px;
}

.page-audio-overlay span {
  color: #25313e;
  font-size: 11px;
  font-weight: 800;
  white-space: nowrap;
}

.page-audio-overlay audio {
  width: 100%;
  min-width: 0;
  height: 28px;
}

.compact-notice {
  margin-bottom: 10px;
}

.task-visual {
  margin: 14px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 12px;
}

.task-visual figcaption {
  font-weight: 700;
  margin-bottom: 8px;
}

.task-visual svg {
  width: 100%;
  height: auto;
}

.task-visual text {
  font-size: 12px;
  fill: #2a3542;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  font-size: 13px;
  color: var(--muted);
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend i {
  width: 12px;
  height: 12px;
  border-radius: 2px;
}

.bar-chart {
  display: grid;
  gap: 12px;
}

.bar-group {
  display: grid;
  gap: 6px;
}

.bar-row {
  display: grid;
  grid-template-columns: 82px 1fr 44px;
  gap: 8px;
  align-items: center;
  font-size: 13px;
}

.bar-track {
  height: 12px;
  border-radius: 999px;
  background: #e8edf2;
  overflow: hidden;
}

.bar-track i {
  display: block;
  height: 100%;
}

.bar-row em {
  font-style: normal;
  color: var(--muted);
}

.map-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 12px;
}

.map-building {
  fill: #cfd8e3;
  stroke: #75879a;
}

.map-library {
  fill: #cfe9f0;
  stroke: #176b87;
}

.map-car {
  fill: #ece4d4;
  stroke: #9b7b42;
}

.map-field {
  fill: #d8edd2;
  stroke: #4b8b3b;
}

.map-science {
  fill: #eadcf5;
  stroke: #6b5fb5;
}

.map-cafe {
  fill: #f7d9c7;
  stroke: #d96c2c;
}

.hidden-text {
  display: none;
  margin-top: 10px;
}

.hidden-text.show {
  display: block;
}

.question-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.question-row {
  display: grid;
  gap: 6px;
}

.answer-input {
  min-height: 36px;
}

.exam-two-column {
  display: grid;
  grid-template-columns: minmax(0, 68fr) minmax(300px, 32fr);
  gap: 14px;
  align-items: stretch;
}

.exam-left-pane,
.exam-right-pane {
  min-width: 0;
  max-height: min(78vh, 780px);
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f7f9fb;
  padding: 12px;
}

.exam-right-pane {
  background: #fff;
}

.writing-task-prompt {
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.writing-task-prompt:last-child {
  margin-bottom: 0;
  border-bottom: 0;
}

.writing-answer-pane,
.speaking-answer-pane,
.writing-answer-block {
  display: grid;
  gap: 10px;
}

.writing-answer-block {
  margin-bottom: 14px;
}

.writing-answer-block > span {
  color: #25313e;
  font-weight: 800;
}

.writing-answer-block textarea,
.speaking-answer-pane textarea {
  min-height: 300px;
}

.writing-answer-block:first-child textarea {
  min-height: 220px;
}

.speaking-prompt {
  border-left: 4px solid var(--accent-2);
  background: var(--warn-soft);
  padding: 12px;
  border-radius: 0 8px 8px 0;
  line-height: 1.6;
  margin-bottom: 12px;
}

.live-prompt {
  min-height: 220px;
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  line-height: 1.55;
}

.speaking-score-row {
  max-width: 260px;
  margin: 12px 0;
}

.band-input {
  max-width: 140px;
}

.part-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}

.part-live {
  min-height: 36px;
  border-radius: 8px;
  background: #e9eef3;
  color: #25313e;
}

.part-live.active {
  color: #fff;
  background: var(--accent-2);
}

.speaking-clock {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: #fff;
  margin-bottom: 12px;
}

.speaking-clock span {
  color: var(--muted);
}

.speaking-clock strong {
  font-variant-numeric: tabular-nums;
  font-size: 20px;
  color: var(--accent);
}

.voice-state {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  width: fit-content;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 12px;
  color: var(--muted);
  background: #fff;
  margin-bottom: 10px;
  font-size: 13px;
}

.voice-state.active {
  color: #9b2d20;
  border-color: #f0b5a8;
  background: #fff0ec;
}

.qwen-speaking {
  display: grid;
  gap: 10px;
}

.qwen-meter {
  display: grid;
  grid-template-columns: 1fr 52px;
  align-items: center;
  gap: 10px;
}

.qwen-meter::before {
  content: "";
}

.qwen-meter > span {
  grid-column: 1;
  grid-row: 1;
  display: block;
  width: 0;
  height: 10px;
  border-radius: 999px;
  background: var(--accent-2);
  transition: width .08s linear;
}

.qwen-meter {
  position: relative;
  min-height: 16px;
}

.qwen-meter::after {
  content: "";
  position: absolute;
  left: 0;
  right: 62px;
  top: 3px;
  height: 10px;
  border-radius: 999px;
  background: #e2e8ef;
  z-index: 0;
}

.qwen-meter > span,
.qwen-meter > strong {
  position: relative;
  z-index: 1;
}

.qwen-meter > strong {
  color: var(--muted);
  font-size: 12px;
  text-align: right;
}

.recording-download {
  min-height: 24px;
  font-size: 13px;
}

.download-link {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid #b8d9dd;
  background: #eefbfc;
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.notice-inline {
  display: inline-block;
  color: var(--muted);
}

.dialogue-bubble.system {
  justify-self: center;
  max-width: 100%;
  color: #6f5220;
  background: #fff8e8;
  border: 1px solid #f0d59a;
}

.dialogue-log {
  display: grid;
  gap: 10px;
  min-height: 180px;
  max-height: 320px;
  overflow: auto;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 12px;
}

.dialogue-bubble {
  max-width: 86%;
  padding: 10px 12px;
  border-radius: 8px;
  line-height: 1.5;
}

.dialogue-bubble.examiner {
  justify-self: start;
  background: #e7f4f7;
  border: 1px solid #bedfe8;
}

.dialogue-bubble.candidate {
  justify-self: end;
  background: #fff4df;
  border: 1px solid #efd6a3;
}

.word-count {
  color: var(--muted);
  font-size: 13px;
  margin-top: 8px;
}

.feedback {
  margin-top: 16px;
}

.feedback-output {
  white-space: pre-wrap;
  line-height: 1.65;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  min-height: 160px;
  overflow-wrap: anywhere;
}

.feedback-output.empty {
  color: var(--muted);
}

.mode-pill {
  min-width: 64px;
  text-align: center;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
}

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

.bank-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: var(--surface-2);
}

.link-btn {
  color: #9b2d20;
  background: transparent;
  padding: 0;
  min-height: 28px;
}

.notice {
  background: var(--warn-soft);
  border: 1px solid #efd6a3;
  border-radius: 8px;
  padding: 10px;
  color: #6d4b16;
}

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

.source-list a {
  color: var(--accent);
  text-decoration: none;
  background: var(--accent-soft);
  border-radius: 8px;
  padding: 12px;
}

@media (max-width: 1060px) {
  .app-shell {
    grid-template-columns: 240px minmax(0, 1fr);
  }

  .app-shell.sidebar-collapsed {
    grid-template-columns: 0 minmax(0, 1fr);
  }

  .source-box {
    margin-top: 0;
  }

  .tabs {
    grid-template-columns: 1fr;
  }

  .tab {
    text-align: left;
  }

  .pdf-study-layout {
    grid-template-columns: minmax(0, 80fr) minmax(170px, 20fr);
    gap: 10px;
    padding: 10px;
  }

  .pdf-scroll-box,
  .paper-answer-scroll {
    max-height: min(80vh, 720px);
  }

  .pdf-page-with-card {
    grid-template-columns: minmax(0, 82fr) minmax(148px, 18fr);
    gap: 10px;
    padding: 8px;
  }

  .page-answer-card {
    padding: 8px;
  }

  .page-card-audio {
    grid-template-columns: 1fr;
  }

  .page-card-audio audio {
    min-width: 126px;
  }

  .exam-grid,
  .bank-layout {
    grid-template-columns: 1fr;
  }

  .page-answer-cell {
    grid-template-columns: 18px 92px;
  }

  .page-answer-cell span {
    width: 18px;
    height: 20px;
    font-size: 10px;
  }

  .page-answer-cell input {
    width: 92px;
    min-height: 22px;
    font-size: 11px;
  }

  .page-answer-choice {
    grid-template-columns: 14px 38px;
  }

  .page-answer-choice input {
    width: 38px;
    min-height: 18px;
    height: 18px;
  }

  .page-audio-overlay {
    right: 8px;
    top: 8px;
    grid-template-columns: auto 180px;
    max-width: 244px;
  }

  .page-audio-overlay audio {
    height: 26px;
  }

  .reading-split {
    grid-template-columns: 1fr;
  }

  .reading-pane {
    max-height: none;
  }

  .exam-two-column {
    grid-template-columns: minmax(0, 62fr) minmax(260px, 38fr);
    gap: 10px;
  }

  .exam-left-pane,
  .exam-right-pane {
    max-height: min(82vh, 760px);
    padding: 10px;
  }
}

@media (max-width: 680px) {
  .app-shell,
  .app-shell.sidebar-collapsed {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: relative;
    min-height: auto;
  }

  .app-shell.sidebar-collapsed .sidebar {
    min-height: 0;
    align-items: stretch;
  }

  main {
    padding: 14px;
  }

  .view-head,
  .panel-head {
    flex-direction: column;
    align-items: stretch;
  }

  .tabs,
  .segmented,
  .single-filters {
    grid-template-columns: 1fr;
  }

  .pdf-study-layout {
    grid-template-columns: 1fr;
  }

  .pdf-scroll-box,
  .paper-answer-scroll {
    max-height: none;
  }

  .pdf-page-with-card {
    grid-template-columns: 1fr;
  }

  .exam-two-column {
    grid-template-columns: 1fr;
  }

  .exam-left-pane,
  .exam-right-pane {
    max-height: none;
  }

  .page-answer-card {
    position: static;
    max-height: none;
  }

  .page-card-audio {
    grid-template-columns: auto minmax(160px, 1fr);
  }

  .timer {
    width: 100%;
    justify-content: space-between;
  }

  .exam-quick-links,
  .exam-quick-timer {
    width: 100%;
  }

  .speaking-clock {
    grid-template-columns: 1fr;
  }

  .map-pair {
    grid-template-columns: 1fr;
  }
}