:root {
  color-scheme: light;
  --bg: #f4f7f6;
  --panel: #ffffff;
  --text: #17211f;
  --muted: #66736f;
  --line: #dce6e2;
  --border: #dce6e2;
  --soft: #eef8f5;
  --primary: #2fc8b4;
  --primary-dark: #159886;
  --ink: #153f38;
  --danger: #e54855;
  --warning: #f59e0b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 8%, rgba(47, 200, 180, 0.16), transparent 28%),
    linear-gradient(135deg, #f7fbfa 0%, #eef5f3 100%);
  color: var(--text);
  display: flex;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

button {
  border: 0;
  border-radius: 8px;
  padding: 10px 15px;
  color: #fff;
  background: var(--primary-dark);
  cursor: pointer;
  transition: 0.18s ease;
}

button:hover {
  transform: translateY(-1px);
  background: #0f7f70;
}

button:disabled {
  opacity: 0.48;
  cursor: not-allowed;
  transform: none;
}

.ghost {
  color: var(--ink);
  background: #e8f1ef;
}

.danger {
  background: var(--danger);
}

.sidebar {
  width: 220px;
  min-height: 100vh;
  padding: 24px 16px;
  color: #fff;
  background: linear-gradient(180deg, #143f38 0%, #0f2b27 100%);
}

.brand {
  margin-bottom: 28px;
  font-size: 22px;
  font-weight: 800;
}

.nav {
  width: 100%;
  margin-bottom: 8px;
  text-align: left;
  background: transparent;
}

.nav.active,
.nav:hover {
  background: rgba(255, 255, 255, 0.14);
  transform: none;
}

.shell {
  width: 100%;
  padding: 28px;
}

.hidden {
  display: none !important;
}

.login,
.topbar,
.import-panel,
.dashboard-panel,
dialog form {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(220, 230, 226, 0.9);
  border-radius: 12px;
  box-shadow: 0 18px 48px rgba(16, 46, 40, 0.08);
  backdrop-filter: blur(14px);
}

.login,
dialog form {
  padding: 24px;
}

.login {
  max-width: 420px;
  margin: 10vh auto;
}

.login h1,
.topbar h1,
.import-panel h2,
.dashboard-panel h2 {
  margin: 0 0 8px;
}

.topbar {
  margin-bottom: 20px;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar p,
.panel-head p {
  margin: 0;
  color: var(--muted);
}

label {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
  color: var(--muted);
}

.form-label {
  display: block;
  color: var(--muted);
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text);
  background: #fff;
  outline: none;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47, 200, 180, 0.14);
}

.has-error input,
.has-error select,
.has-error textarea {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(213, 75, 75, 0.12);
}

.field-error {
  color: var(--danger);
  font-size: 13px;
  line-height: 1.45;
}

.inline-control {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.inline-control button {
  height: 42px;
  white-space: nowrap;
}

.combo-field {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 42px;
}

.combo-field input {
  border-radius: 8px 0 0 8px;
}

.combo-toggle {
  padding: 0;
  border-radius: 0 8px 8px 0;
}

.combo-menu {
  position: absolute;
  z-index: 20;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  max-height: 230px;
  overflow: auto;
  padding: 6px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 36px rgba(16, 46, 40, 0.14);
}

.combo-menu button {
  width: 100%;
  padding: 9px 10px;
  color: var(--text);
  text-align: left;
  background: transparent;
}

.combo-menu button:hover {
  color: #fff;
  background: var(--primary-dark);
  transform: none;
}

.combo-empty {
  padding: 10px;
  color: var(--muted);
  font-size: 13px;
}

.cascade-selects {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.cascade-selects select {
  min-width: 0;
}

.import-defaults {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 14px;
  margin: 16px 0 12px;
}

textarea {
  min-height: 92px;
  resize: vertical;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
}

.metrics div,
.empty,
.question-row {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.metrics div {
  padding: 22px;
}

.metrics span {
  display: block;
  font-size: 34px;
  font-weight: 800;
  color: var(--ink);
}

.metrics small,
.muted {
  color: var(--muted);
}

.dashboard-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 16px;
}

.dashboard-panel {
  padding: 20px;
}

.dashboard-panel.wide {
  grid-column: 1 / -1;
}

.panel-title {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.panel-title h2 {
  font-size: 18px;
}

.panel-title span {
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

.todo-list,
.quick-actions,
.coverage-list {
  display: grid;
  gap: 10px;
}

.todo-item {
  min-height: 74px;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: 2px 12px;
  align-items: center;
  padding: 12px;
  color: var(--text);
  text-align: left;
  background: #f8fbfa;
  border: 1px solid var(--line);
}

.todo-item:hover {
  color: #fff;
}

.todo-item strong {
  grid-row: 1 / 3;
  color: var(--primary-dark);
  font-size: 28px;
}

.todo-item:hover strong,
.todo-item:hover small {
  color: inherit;
}

.todo-item span {
  font-weight: 700;
}

.todo-item small {
  color: var(--muted);
}

.todo-item.done {
  background: #f3f6f5;
}

.quick-actions {
  grid-template-columns: 1fr 1fr;
}

.quick-actions button {
  min-height: 46px;
}

.coverage-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  background: #f8fbfa;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.coverage-item strong,
.coverage-item span {
  display: block;
}

.coverage-item span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 13px;
}

.coverage-item b {
  min-width: 48px;
  color: var(--ink);
  font-size: 24px;
  text-align: right;
}

.toolbar {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.toolbar input {
  min-width: 260px;
}

.toolbar select {
  width: 150px;
}

.toolbar-wrap {
  flex-wrap: wrap;
}

.manager-toolbar {
  align-items: center;
}

#questionsView .manager-toolbar {
  margin-bottom: 0;
  padding: 16px 16px 12px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 12px 12px 0 0;
  box-shadow: 0 12px 30px rgba(16, 46, 40, 0.06);
}

#questionsView .section-summary {
  border-top: 0;
  border-radius: 0 0 12px 12px;
  box-shadow: 0 18px 30px rgba(16, 46, 40, 0.05);
}

.catalog-tabs {
  display: flex;
  gap: 10px;
  margin: 0 0 16px;
  overflow-x: auto;
  padding-bottom: 2px;
}

.catalog-tabs button {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  white-space: nowrap;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
}

.catalog-tabs button.active {
  color: #fff;
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.catalog-tabs span {
  min-width: 22px;
  padding: 2px 7px;
  border-radius: 999px;
  color: inherit;
  background: rgba(47, 200, 180, 0.18);
  font-size: 12px;
}

.manager-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.question-manager-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.wide-cascade {
  min-width: min(620px, 100%);
}

.manager-aside,
.section-summary,
.level-section,
.bank-card {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(16, 46, 40, 0.06);
}

.manager-aside {
  position: sticky;
  top: 18px;
  padding: 14px;
  display: grid;
  gap: 8px;
}

.aside-title {
  padding: 4px 4px 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.tree-heading {
  margin-top: 8px;
  padding: 8px 6px 2px;
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 800;
}

.tree-level-title {
  padding: 2px 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.summary-card,
.side-item {
  width: 100%;
  display: grid;
  gap: 4px;
  text-align: left;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
}

.summary-card-wrap {
  display: grid;
  gap: 6px;
}

.mini-edit {
  width: 100%;
  padding: 8px 10px;
  color: var(--muted);
  background: #f7faf9;
  border: 1px solid var(--line);
  font-size: 13px;
}

.mini-edit:hover {
  color: #fff;
}

.summary-card:hover,
.side-item:hover {
  transform: none;
  background: var(--soft);
}

.summary-card.active,
.side-item.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  border-color: transparent;
}

.summary-card span,
.summary-card small {
  color: inherit;
  opacity: 0.82;
}

.side-item {
  grid-template-columns: 1fr auto;
  align-items: center;
}

.category-node {
  margin-left: 0;
}

.chapter-mini {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 0 8px 14px;
}

.chapter-mini button,
.summary-chips button {
  padding: 5px 8px;
  color: var(--muted);
  background: #f4f7f6;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
}

.chapter-mini button:hover,
.summary-chips button:hover {
  color: var(--ink);
  transform: none;
  background: #e7f6f2;
}

.muted-mini {
  opacity: 0.68;
}

.bank-tree {
  display: grid;
  gap: 16px;
}

.content-board {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(260px, 0.8fr) minmax(260px, 0.8fr);
  gap: 16px;
  align-items: start;
}

.content-panel {
  min-height: 360px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(16, 46, 40, 0.06);
}

.content-panel h2 {
  margin: 0 0 14px;
  color: var(--ink);
  font-size: 18px;
}

.content-list {
  display: grid;
  gap: 8px;
}

.content-node {
  margin-left: calc(var(--depth, 0) * 18px);
  padding: 12px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.content-node strong,
.content-node span {
  display: block;
}

.content-node span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.level-section {
  padding: 18px;
}

.exam-section {
  margin-top: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.exam-section + .exam-section {
  margin-top: 14px;
}

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

.exam-head strong {
  color: var(--primary-dark);
  font-size: 17px;
}

.exam-head span,
.subject-group-label {
  color: var(--muted);
  font-size: 13px;
}

.subject-group-block + .subject-group-block {
  margin-top: 14px;
}

.subject-group-label {
  margin: 0 0 8px;
  font-weight: 800;
}

.level-head,
.bank-card-head,
.section-summary {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.level-head {
  margin-bottom: 14px;
}

.level-head h2,
.section-summary h2,
.bank-card h3 {
  margin: 0;
}

.level-head span,
.section-summary p {
  color: var(--muted);
  margin: 0;
}

.bank-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 12px;
}

.bank-card {
  padding: 16px;
  display: grid;
  gap: 10px;
}

.status-pill {
  padding: 3px 8px;
  border-radius: 999px;
  color: #087160;
  background: #ddf8f2;
  font-size: 12px;
}

.chapter-tags {
  min-height: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chapter-tags span {
  padding: 5px 8px;
  border-radius: 999px;
  color: var(--muted);
  background: #f3f7f6;
  font-size: 12px;
}

.section-summary {
  margin-bottom: 12px;
  padding: 16px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  align-items: stretch;
}

.question-summary-head h2 {
  margin-bottom: 6px;
}

.summary-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-start;
}

.question-filter-panel {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(150px, .7fr) minmax(240px, 1.2fr) minmax(140px, .6fr) minmax(140px, .6fr);
  gap: 12px;
  align-items: end;
}

.question-filter-panel label {
  margin-bottom: 0;
}

.filter-label {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.summary-chips button.active {
  color: #fff;
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.user-layout {
  grid-template-columns: 300px minmax(0, 1fr);
}

.user-list {
  max-height: calc(100vh - 170px);
  overflow: auto;
}

.user-item {
  width: 100%;
  display: grid;
  gap: 4px;
  text-align: left;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
}

.user-item:hover {
  transform: none;
  background: var(--soft);
}

.user-item.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  border-color: transparent;
}

.user-item span,
.user-item small {
  color: inherit;
  opacity: 0.82;
}

.user-detail {
  display: grid;
  gap: 14px;
}

.user-head-card,
.user-section {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 12px 30px rgba(16, 46, 40, 0.06);
}

.user-head-card {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
}

.user-head-card h2 {
  margin: 0 0 6px;
}

.user-head-card p {
  margin: 4px 0;
  color: var(--muted);
}

.user-metrics {
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
}

.user-metrics div {
  padding: 16px;
}

.user-metrics span {
  font-size: 26px;
}

.user-sections {
  display: grid;
  gap: 14px;
}

.user-record-list {
  display: grid;
  gap: 8px;
}

.user-record {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.user-record strong {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-record p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.note-record {
  align-items: start;
}

.note-record textarea {
  min-height: 78px;
  margin-top: 8px;
}

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

.compact-empty {
  padding: 14px;
  font-size: 13px;
}

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

.question-tool-panel {
  display: grid;
  gap: 12px;
}

.bulk-question-panel {
  padding: 14px;
  background: rgba(243, 248, 245, 0.88);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.bulk-question-head {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
}

.bulk-question-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: minmax(220px, 1.3fr) repeat(4, minmax(130px, 1fr)) auto;
  gap: 10px;
  align-items: end;
}

.bulk-question-grid label {
  margin-bottom: 0;
}

.question-row {
  padding: 18px;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: start;
}

.question-row.selected {
  border-color: rgba(47, 200, 180, 0.7);
  box-shadow: 0 0 0 3px rgba(47, 200, 180, 0.12);
}

.question-select {
  margin: 4px 0 0;
  display: block;
}

.question-select input {
  width: 18px;
  height: 18px;
}

.question-row h3 {
  margin: 0;
  font-size: 17px;
  line-height: 1.55;
}

.question-row-main {
  min-width: 0;
  display: grid;
  gap: 10px;
}

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

.question-badges,
.question-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.question-badges span,
.question-tags span {
  padding: 4px 8px;
  border-radius: 999px;
  color: #087160;
  background: #ddf8f2;
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.meta {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.question-material,
.question-analysis,
.question-answer {
  padding: 10px 12px;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 10px;
  color: var(--text);
  background: #f8faf9;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.6;
}

.question-material {
  display: block;
  color: var(--muted);
}

.question-answer strong,
.question-analysis strong {
  color: var(--primary-dark);
}

.question-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 8px;
}

.question-options span {
  min-width: 0;
  padding: 8px 10px;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.45;
}

.question-options b {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-right: 8px;
  color: #087160;
  background: #ddf8f2;
  border-radius: 50%;
  font-size: 12px;
}

.off-badge {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  color: #7a2e0e;
  background: #fff1dd;
  font-size: 12px;
  vertical-align: middle;
}

.row-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.empty {
  padding: 28px;
  color: var(--muted);
  text-align: center;
}

.import-panel {
  padding: 24px;
}

.panel-head,
.import-actions {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: center;
}

.upload-box {
  position: relative;
  margin: 18px 0 14px;
  border: 1.5px dashed #9bded3;
  border-radius: 12px;
  background: var(--soft);
}

.upload-box.dragging {
  border-color: var(--primary-dark);
  background: #dff7f2;
}

.upload-box input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.upload-box label {
  margin: 0;
  padding: 24px;
  display: grid;
  gap: 6px;
  text-align: center;
  color: var(--ink);
}

.upload-box span {
  color: var(--muted);
  font-size: 14px;
}

.import-panel textarea {
  min-height: 320px;
  margin: 0 0 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
}

dialog {
  width: min(760px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  position: relative;
  overflow: hidden;
  border: 0;
  border-radius: 12px;
  padding: 0;
}

#editor {
  width: min(980px, calc(100vw - 28px));
}

#questionForm {
  max-height: calc(100vh - 56px);
  overflow-y: auto;
  padding: 28px 32px 0;
}

dialog form {
  max-height: calc(100vh - 32px);
  overflow-y: auto;
  padding-bottom: 0;
}

.dialog-close-btn {
  position: absolute;
  z-index: 5;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 50%;
  color: var(--ink);
  background: #e8f1ef;
  font-size: 24px;
  line-height: 1;
}

.dialog-close-btn:hover {
  transform: none;
  background: #dcebe8;
}

.choice-dialog {
  width: min(560px, calc(100vw - 32px));
}

.choice-dialog form {
  padding-top: 28px;
}

.choice-dialog p {
  margin: 0 0 14px;
  color: var(--text);
  line-height: 1.7;
}

.choice-details {
  max-height: 280px;
  overflow-y: auto;
  display: grid;
  gap: 8px;
  margin: 12px 0 4px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #7a2e0e;
  background: #fff8ed;
  font-size: 13px;
  line-height: 1.55;
}

/* 统一后台弹窗：替代浏览器原生 prompt/confirm/alert */
.app-modal-open {
  overflow: hidden;
}

.app-modal-layer {
  position: fixed;
  inset: 0;
  z-index: 2147482800;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
  background: rgba(15, 23, 42, 0.44);
  animation: appModalFadeIn 0.14s ease-out;
}

.app-modal-layer.closing {
  animation: appModalFadeOut 0.12s ease-in forwards;
}

.app-modal-card {
  position: relative;
  width: min(560px, calc(100vw - 32px));
  max-height: min(760px, calc(100dvh - 48px));
  overflow: hidden;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(220, 230, 226, 0.95);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 28px 88px rgba(0, 0, 0, 0.28);
  animation: appModalSlideIn 0.16s ease-out;
}

.app-modal-card.wide {
  width: min(760px, calc(100vw - 32px));
}

.app-modal-head {
  padding: 22px 26px 10px;
  border-bottom: 1px solid rgba(226, 232, 240, 0.7);
}

.app-modal-head h2 {
  margin: 0;
  font-size: 20px;
  color: var(--ink);
}

.app-modal-body {
  overflow-y: auto;
  padding: 20px 26px 8px;
}

.app-modal-message {
  margin: 0;
  color: var(--text);
  line-height: 1.75;
}

.app-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 16px 26px 22px;
  border-top: 1px solid rgba(226, 232, 240, 0.7);
  background: #fff;
}

.app-modal-close {
  position: absolute;
  z-index: 2;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: 999px;
  color: #64748b;
  background: #f1f5f9;
  font-size: 22px;
  line-height: 1;
}

.app-modal-close:hover {
  transform: none;
  color: var(--ink);
  background: #e2e8f0;
}

.app-modal-form {
  display: grid;
  gap: 16px;
}

.app-modal-form label {
  display: grid;
  gap: 8px;
  color: var(--text);
  font-weight: 700;
}

.app-modal-form input,
.app-modal-form select,
.app-modal-form textarea {
  width: 100%;
  font-weight: 500;
}

.app-modal-form .check-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.app-modal-form .check-row input {
  width: auto;
}

.form-help {
  margin: -4px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.form-error {
  margin: -4px 0 0;
  padding: 10px 12px;
  border-radius: 10px;
  color: #991b1b;
  background: #fee2e2;
  font-size: 13px;
  line-height: 1.5;
}

@keyframes appModalFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes appModalFadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes appModalSlideIn {
  from { opacity: 0; transform: translateY(10px) scale(0.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@media (max-width: 720px) {
  .app-modal-layer {
    align-items: flex-end;
    padding: 12px;
  }
  .app-modal-card,
  .app-modal-card.wide {
    width: 100%;
    max-height: calc(100dvh - 24px);
    border-radius: 18px 18px 12px 12px;
  }
  .app-modal-head,
  .app-modal-body,
  .app-modal-footer {
    padding-left: 18px;
    padding-right: 18px;
  }
  .app-modal-footer {
    flex-wrap: wrap;
  }
  .app-modal-footer button {
    flex: 1;
  }
}

#questionForm h2 {
  margin-top: 0;
}

#questionForm textarea[name="stem"] {
  min-height: 118px;
}

dialog::backdrop {
  background: rgba(12, 18, 24, 0.45);
}

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

.blank-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: -4px 0 8px;
  color: var(--muted);
  font-size: 13px;
}

.blank-answer-builder {
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f8fafb;
}

.blank-answer-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.blank-answer-head strong,
.blank-answer-head span {
  display: block;
}

.blank-answer-head span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.blank-answer-rows {
  display: grid;
  gap: 10px;
}

.blank-answer-row {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.blank-answer-row span {
  color: var(--primary-dark);
  font-weight: 800;
}

.case-builder {
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #f8fafb;
}

.case-builder.hidden {
  display: none;
}

.case-builder-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.case-builder-head strong,
.case-builder-head span {
  display: block;
}

.case-builder-head span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.sub-question-list {
  display: grid;
  gap: 12px;
}

.sub-question-card {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

.sub-question-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.sub-question-head strong {
  color: var(--primary-dark);
}

.sub-option-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.bulk-subject-section {
  display: grid;
  gap: 12px;
  margin-bottom: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f8fafb;
}

.bulk-subject-head,
.bulk-subject-row {
  display: grid;
  gap: 10px;
}

.bulk-subject-head {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
}

.bulk-subject-head strong,
.bulk-subject-head span {
  display: block;
}

.bulk-subject-head span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.bulk-subject-row {
  grid-template-columns: minmax(130px, 0.8fr) minmax(150px, 1fr) minmax(160px, 1.2fr) auto;
  align-items: end;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.bulk-subject-row label {
  margin-bottom: 0;
}

footer {
  position: sticky;
  bottom: 0;
  z-index: 4;
  margin: 20px -24px 0;
  padding: 14px 24px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
}

#questionForm footer {
  margin-right: -32px;
  margin-left: -32px;
  padding-right: 32px;
  padding-left: 32px;
}

.check-row {
  display: flex;
  grid-template-columns: none;
  gap: 8px;
  align-items: center;
}

.check-row input {
  width: auto;
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 10;
  max-width: min(420px, calc(100vw - 44px));
  padding: 12px 16px;
  border-radius: 10px;
  color: #fff;
  background: var(--primary-dark);
  box-shadow: 0 16px 38px rgba(15, 43, 39, 0.22);
}

.toast.bad {
  background: var(--danger);
}

@media (max-width: 780px) {
  body {
    display: block;
  }

  .sidebar {
    width: 100%;
    min-height: auto;
    display: flex;
    gap: 8px;
    align-items: center;
    overflow-x: auto;
  }

  .brand {
    margin: 0 14px 0 0;
    white-space: nowrap;
  }

  .nav {
    width: auto;
    white-space: nowrap;
  }

  .shell {
    padding: 16px;
  }

  .option-grid,
  .question-row,
  .bulk-question-grid,
  .bulk-subject-row,
  .manager-layout,
  .dashboard-grid,
  .quick-actions,
  .topbar,
  .toolbar,
  .panel-head,
  .import-actions {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar input,
  .toolbar select {
    width: 100%;
    min-width: 0;
  }

  .row-actions {
    justify-content: flex-end;
  }

  .manager-aside {
    position: static;
  }

  .level-head,
  .bank-card-head,
  .section-summary,
  .user-head-card,
  .user-record {
    align-items: flex-start;
    flex-direction: column;
  }

  .summary-chips {
    justify-content: flex-start;
  }

  .dashboard-panel.wide {
    grid-column: auto;
  }

  .todo-item {
    grid-template-columns: 48px minmax(0, 1fr);
  }
}

.rich-field {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}

.rich-toolbar {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding: 8px;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 10px 10px 0 0;
  background: #f8fbfa;
}

.rich-toolbar button,
.rich-upload-btn {
  min-height: 32px;
  padding: 7px 10px;
  border-radius: 7px;
  font-size: 13px;
  line-height: 1.1;
}

.rich-upload-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  cursor: pointer;
}

.rich-upload-btn input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.rich-editable {
  min-height: 150px;
  max-height: 420px;
  overflow: auto;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 0 0 10px 10px;
  background: #fff;
  color: var(--text);
  line-height: 1.65;
  outline: none;
  word-break: break-word;
}

.rich-editable:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47, 200, 180, 0.14);
}

.rich-editable:empty::before {
  content: attr(data-placeholder);
  color: #9aa7a3;
}

.rich-editable img,
.rich-editable video,
.rich-editable audio {
  display: block;
  max-width: 100%;
  margin: 10px 0;
  border-radius: 8px;
}

.rich-editable video {
  width: min(100%, 680px);
  background: #000;
}

.rich-value {
  min-height: 180px;
  line-height: 1.65;
}

.tox.tox-tinymce {
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}

.rich-field .tox .tox-toolbar__primary,
.rich-field .tox .tox-toolbar-overlord {
  background: #f8fbfa;
}

.rich-field .tox .tox-statusbar {
  border-top-color: var(--line);
}

.rich-field.rich-fallback::after {
  content: "TinyMCE 未加载，当前为普通文本框兜底模式";
  color: var(--warning);
  font-size: 12px;
}


/* 题目编辑器重构：不用原生 dialog，避免 TinyMCE 弹窗被 top-layer 压住 */
body.question-editor-open {
  overflow: hidden;
}

.question-editor-modal {
  position: fixed;
  inset: 0;
  z-index: 8000;
  display: grid;
  place-items: center;
  padding: 0;
}

.question-editor-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(12, 18, 24, 0.52);
  backdrop-filter: blur(6px);
}

.question-editor-panel {
  position: relative;
  z-index: 1;
  width: 100vw;
  height: 100vh;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  overflow: hidden;
  background: #f6fbfa;
  border: 0;
  border-radius: 0;
  box-shadow: 0 32px 90px rgba(8, 31, 28, 0.28);
}

.question-editor-head,
.question-editor-footer {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.question-editor-head {
  min-height: 92px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--line);
}

.question-editor-head h2 {
  margin: 2px 0 6px;
  font-size: 22px;
}

.question-editor-head p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.editor-eyebrow {
  display: inline-flex;
  padding: 3px 8px;
  border-radius: 999px;
  color: #087160;
  background: #ddf8f2;
  font-size: 12px;
  font-weight: 800;
}

.question-editor-close {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  padding: 0;
  border-radius: 50%;
  color: var(--ink);
  background: #e8f1ef;
  font-size: 26px;
  line-height: 1;
}

.question-editor-close:hover {
  transform: none;
  background: #dcebe8;
}

.question-editor-body {
  min-height: 0;
  overflow: auto;
  display: grid;
  gap: 16px;
  padding: 20px 28px 28px;
}

.editor-card {
  display: grid;
  gap: 14px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 10px 26px rgba(16, 46, 40, 0.055);
}

.editor-card-title {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(220, 230, 226, 0.72);
}

.editor-card-title strong {
  color: var(--ink);
  font-size: 16px;
}

.editor-card-title span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
  text-align: right;
}

.editor-grid {
  display: grid;
  gap: 14px;
}

.editor-grid-3 {
  grid-template-columns: minmax(0, 1.2fr) minmax(220px, 0.9fr) minmax(160px, 0.55fr);
  align-items: end;
}

.editor-card .rich-field {
  margin-bottom: 0;
}

.editor-card .option-grid {
  margin-top: 0;
}

.answer-editor-card .answer-field {
  margin-bottom: 0;
}

.question-editor-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  border-top: 1px solid var(--line);
}

.footer-note {
  color: var(--muted);
  font-size: 13px;
}

.footer-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* TinyMCE 菜单、插入链接/图片/表格等弹窗必须高于题目编辑器层 */
.tox-tinymce-aux,
.tox-dialog-wrap,
.tox-silver-sink,
.tox-notifications-container {
  z-index: 12000 !important;
}

.tox .tox-dialog,
.tox-dialog {
  border-radius: 12px !important;
}

.rich-field .tox.tox-tinymce {
  border-radius: 12px;
}

@media (max-width: 900px) {
  .question-editor-modal {
    padding: 0;
  }

  .question-editor-panel {
    width: 100vw;
    height: 100vh;
    border-radius: 0;
  }

  .question-editor-head,
  .question-editor-body,
  .question-editor-footer {
    padding-left: 14px;
    padding-right: 14px;
  }

  .editor-grid-3,
  .option-grid {
    grid-template-columns: 1fr;
  }

  .editor-card-title,
  .question-editor-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .editor-card-title span {
    text-align: left;
  }

  .footer-actions {
    width: 100%;
  }

  .footer-actions button {
    flex: 1;
  }
}


/* 后台样式修复：恢复完整页面布局，并强化全屏题目编辑器 */
body.question-editor-open .shell,
body.question-editor-open .sidebar {
  pointer-events: none;
  user-select: none;
}

.question-editor-modal,
.question-editor-panel,
.question-editor-body {
  min-width: 0;
}

.question-editor-panel {
  pointer-events: auto;
}

.question-editor-head > div {
  min-width: 0;
}

.question-editor-head p {
  max-width: 980px;
}

.question-editor-body {
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
  background:
    radial-gradient(circle at 18% 6%, rgba(47, 200, 180, 0.12), transparent 28%),
    #f6fbfa;
}

.editor-card {
  max-width: 1480px;
  width: 100%;
  margin: 0 auto;
}

.editor-card-content,
.analysis-editor-card,
#caseBuilder {
  max-width: 1480px;
}

.question-editor-footer {
  position: relative;
  z-index: 2;
  margin: 0;
}

#questionForm > footer.question-editor-footer {
  margin: 0;
  padding-right: 28px;
  padding-left: 28px;
}

.question-editor-body .tox.tox-tinymce {
  min-height: 320px;
}

.question-editor-body .sub-question-card .tox.tox-tinymce {
  min-height: 220px;
}

.tox-tinymce-aux,
.tox-dialog-wrap,
.tox-silver-sink,
.tox-notifications-container {
  z-index: 20000 !important;
}

.tox-dialog-wrap__backdrop {
  z-index: 19990 !important;
}

.tox .tox-dialog,
.tox-dialog {
  max-width: min(960px, calc(100vw - 32px)) !important;
}

.question-row h3 {
  white-space: normal;
  overflow-wrap: anywhere;
}

.question-options span,
.question-material,
.question-analysis span {
  overflow-wrap: anywhere;
}

@media (max-width: 1180px) {
  .editor-grid-3,
  .cascade-selects,
  .content-board,
  .import-defaults {
    grid-template-columns: 1fr;
  }

  .question-editor-head p {
    max-width: 720px;
  }
}


/* 题目编辑页最终重构：全屏工作台，不使用磨砂遮罩，不留上下间隙 */
html,
body {
  width: 100%;
  min-width: 0;
}

body.question-editor-open {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100dvh;
  overflow: hidden;
}

body.question-editor-open .shell,
body.question-editor-open .sidebar {
  pointer-events: none;
}

.question-editor-modal {
  position: fixed !important;
  inset: 0 !important;
  z-index: 9000 !important;
  display: block !important;
  width: 100vw !important;
  height: 100vh !important;
  height: 100dvh !important;
  margin: 0 !important;
  padding: 0 !important;
  background: #f4f7f6 !important;
  overflow: hidden !important;
}

.question-editor-modal.hidden {
  display: none !important;
}

.question-editor-backdrop {
  display: none !important;
}

.question-editor-panel {
  position: fixed !important;
  inset: 0 !important;
  z-index: 1 !important;
  display: grid !important;
  grid-template-rows: auto minmax(0, 1fr) auto !important;
  width: 100vw !important;
  max-width: none !important;
  height: 100vh !important;
  height: 100dvh !important;
  max-height: none !important;
  margin: 0 !important;
  padding: 0 !important;
  overflow: hidden !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: #f4f7f6 !important;
  box-shadow: none !important;
  transform: none !important;
}

.question-editor-head,
.question-editor-footer {
  width: 100% !important;
  margin: 0 !important;
  border-color: #dce6e2 !important;
  background: #ffffff !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  box-shadow: none !important;
}

.question-editor-head {
  min-height: 72px !important;
  align-items: center !important;
  padding: 14px 24px !important;
}

.question-editor-head h2 {
  margin: 1px 0 4px !important;
  font-size: 20px !important;
}

.question-editor-head p {
  max-width: none !important;
  font-size: 13px !important;
}

.question-editor-close {
  width: 40px !important;
  height: 40px !important;
  border-radius: 12px !important;
  background: #eef3f2 !important;
}

.question-editor-body {
  min-height: 0 !important;
  width: 100% !important;
  margin: 0 !important;
  padding: 18px 24px 24px !important;
  overflow: auto !important;
  background: #f4f7f6 !important;
  scrollbar-gutter: stable;
}

.editor-card {
  width: 100% !important;
  max-width: none !important;
  margin: 0 !important;
  border: 1px solid #dce6e2 !important;
  border-radius: 14px !important;
  background: #ffffff !important;
  box-shadow: none !important;
}

.editor-card + .editor-card,
.editor-card + .sub-json-field,
.sub-json-field + .editor-card {
  margin-top: 0 !important;
}

.question-editor-footer {
  position: relative !important;
  z-index: 2 !important;
  min-height: 64px !important;
  padding: 12px 24px !important;
}

#questionForm > footer.question-editor-footer {
  width: 100% !important;
  padding: 12px 24px !important;
}

.footer-actions button {
  min-width: 104px;
}

.question-editor-body .tox.tox-tinymce {
  min-height: 360px !important;
  border-radius: 12px !important;
}

.question-editor-body .sub-question-card .tox.tox-tinymce {
  min-height: 260px !important;
}

/* TinyMCE 插入图片/链接/媒体/表格弹窗：高于编辑页，使用深色透明遮罩，避免整页发白 */
.tox-silver-sink,
.tox-tinymce-aux,
.tox-dialog-wrap,
.tox-notifications-container {
  z-index: 2147483000 !important;
}

.tox-dialog-wrap {
  position: fixed !important;
  inset: 0 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 100vw !important;
  height: 100vh !important;
  height: 100dvh !important;
  background: transparent !important;
  pointer-events: auto !important;
}

.tox-dialog-wrap__backdrop {
  position: fixed !important;
  inset: 0 !important;
  z-index: 0 !important;
  background: rgba(15, 23, 42, 0.38) !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

.tox .tox-dialog,
.tox-dialog {
  position: relative !important;
  z-index: 1 !important;
  max-width: min(980px, calc(100vw - 48px)) !important;
  max-height: min(820px, calc(100dvh - 48px)) !important;
  border-radius: 14px !important;
  background: #fff !important;
  box-shadow: 0 28px 88px rgba(0, 0, 0, 0.32) !important;
}

.tox .tox-dialog__body-content {
  max-height: calc(100dvh - 210px) !important;
}

.tox-tinymce-aux .tox-menu,
.tox-tinymce-aux .tox-pop,
.tox-tinymce-aux .tox-pop__dialog,
.tox-tinymce-aux .tox-collection {
  z-index: 2147483001 !important;
}

@media (max-width: 900px) {
  .question-editor-head {
    min-height: 64px !important;
    padding: 10px 12px !important;
  }

  .question-editor-head p {
    display: none;
  }

  .question-editor-body {
    padding: 12px !important;
  }

  #questionForm > footer.question-editor-footer,
  .question-editor-footer {
    padding: 10px 12px !important;
  }

  .footer-actions {
    width: 100%;
  }

  .tox .tox-dialog,
  .tox-dialog {
    max-width: calc(100vw - 20px) !important;
    max-height: calc(100dvh - 20px) !important;
  }
}

/* 题目列表富媒体预览：图片/视频/音频统一展示，避免只显示“含富媒体”文字 */
.question-row.has-media {
  border-color: rgba(47, 200, 180, 0.28);
}

.question-badges .media-badge {
  color: #7c4a03;
  background: #fff3d7;
}

.question-media-preview {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid #dceae7;
  border-radius: 12px;
  background: linear-gradient(180deg, #fbfffe, #f4faf8);
}

.question-media-preview-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--ink);
  font-size: 13px;
}

.question-media-preview-head span {
  color: var(--muted);
  font-weight: 700;
}

.question-media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 220px));
  gap: 10px;
  align-items: stretch;
}

.question-media-tile {
  min-width: 0;
  min-height: 112px;
  display: grid;
  gap: 6px;
  align-content: start;
  padding: 8px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  overflow: hidden;
}

.question-media-tile span,
.question-media-tile small,
.question-media-tile .audio-title {
  display: block;
  min-width: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.question-media-tile img,
.question-media-tile video {
  width: 100%;
  height: 96px;
  display: block;
  border-radius: 8px;
  object-fit: cover;
  background: #111827;
}

.question-media-tile audio {
  width: 100%;
  min-width: 0;
}

.question-media-tile.audio {
  min-height: 96px;
  justify-content: stretch;
  background: #f8fbfa;
}

.question-media-tile.more {
  place-items: center;
  justify-content: center;
  color: #087160;
  background: #e8faf6;
  font-size: 22px;
  font-weight: 900;
}

.question-media-tile.more span {
  white-space: normal;
  text-align: center;
}

@media (max-width: 760px) {
  .question-media-grid {
    grid-template-columns: 1fr;
  }

  .question-media-preview-head {
    align-items: flex-start;
    flex-direction: column;
  }
}

.shared-options-preview {
  border-left: 4px solid #16a887;
  padding-left: 10px;
}

.sub-question-preview {
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fbfcfd;
}

.sub-question-preview.shared {
  background: #f2fbf8;
  border-color: #ccefe6;
}

.sub-question-preview-head,
.sub-question-preview-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sub-question-preview-head {
  justify-content: space-between;
  color: var(--primary-dark);
}

.sub-question-preview-head span,
.sub-question-preview-more {
  color: var(--muted);
  font-size: 12px;
}

.sub-question-preview-row span {
  display: inline-grid;
  place-items: center;
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
  color: #087160;
  background: #ddf8f2;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 900;
}

.sub-question-preview-row p {
  flex: 1;
  min-width: 0;
  margin: 0;
  color: var(--text);
  font-size: 13px;
  line-height: 1.5;
}

.sub-question-preview-row b {
  flex: 0 0 auto;
  padding: 3px 8px;
  color: #087160;
  background: #ddf8f2;
  border-radius: 999px;
  font-size: 12px;
}

.shared-sub-question-card {
  border-color: #ccefe6;
  background: #fcfffe;
}

.shared-sub-hint {
  padding: 10px 12px;
  color: #087160;
  background: #eefaf7;
  border: 1px solid #ccefe6;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.6;
}

.question-form-shared-options .option-field {
  border-color: #b8e5dc;
  background: linear-gradient(180deg, #fbfffe 0%, #f4fbf9 100%);
}

.question-form-shared-options .option-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.question-form-shared-options #caseBuilder {
  border-color: #b8e5dc;
  background: #ffffff;
}

.shared-sub-answer-field select {
  min-height: 44px;
  font-weight: 700;
  color: #075f53;
  background: #f7fffc;
  border-color: #b8e5dc;
}

.shared-sub-answer-field select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(18, 142, 120, 0.12);
}

@media (max-width: 760px) {
  .question-form-shared-options .option-grid {
    grid-template-columns: 1fr;
  }
}

/* 激活码 / 题库授权 */
.status-pill.warn {
  color: #92400e;
  background: #ffedd5;
}

.status-pill.free {
  color: #166534;
  background: #dcfce7;
}

.access-grid {
  display: grid;
  grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
  gap: 12px;
}

.activation-toolbar {
  grid-template-columns: minmax(0, 1fr) 160px auto auto auto auto;
}

.activation-admin-grid {
  display: grid;
  grid-template-columns: minmax(260px, 340px) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.tips-list {
  display: grid;
  gap: 10px;
  color: var(--muted);
  line-height: 1.7;
}

.tips-list p {
  margin: 0;
}

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

.activation-code-row {
  padding: 14px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.activation-code-row.disabled,
.activation-code-row.expired,
.activation-code-row.used_up {
  opacity: .76;
  background: #f9fafb;
}

.code-main {
  min-width: 0;
  display: grid;
  gap: 5px;
}

.code-title {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.code-title strong {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .06em;
}

.code-status {
  padding: 3px 8px;
  border-radius: 999px;
  color: #087160;
  background: #ddf8f2;
  font-size: 12px;
}

.code-status.used_up {
  color: #7c2d12;
  background: #fed7aa;
}

.code-status.expired,
.code-status.disabled {
  color: #475569;
  background: #e2e8f0;
}


.activation-list-head {
  align-items: flex-start;
  gap: 12px;
}

.panel-subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.activation-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: -4px 0 12px;
}

.activation-stats span {
  padding: 6px 10px;
  border-radius: 999px;
  background: #f1f5f9;
  color: #475569;
  font-size: 12px;
  font-weight: 700;
}

.activation-full-code {
  max-width: 100%;
  padding: 8px 10px;
  border-radius: 10px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  color: #0f172a;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .08em;
  white-space: normal;
  word-break: break-all;
  line-height: 1.45;
}

.activation-bank-path {
  color: #334155;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

.activation-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.activation-metrics span {
  padding: 4px 8px;
  border-radius: 8px;
  background: #f8fafc;
  border: 1px solid #edf2f7;
}

.activation-row-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.generated-code-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.generated-codes {
  margin-top: 12px;
  padding: 12px;
  border: 1px dashed rgba(21, 152, 134, .35);
  border-radius: 12px;
  background: #f6fffc;
}

.generated-codes textarea {
  min-height: 170px;
  margin: 10px 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .04em;
}

.entitlement-record button {
  align-self: center;
}

@media (max-width: 980px) {
  .activation-admin-grid,
  .access-grid {
    grid-template-columns: 1fr;
  }
  .activation-toolbar {
    grid-template-columns: 1fr;
  }
  .activation-code-row {
    grid-template-columns: 1fr;
  }
}

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

@media (max-width: 720px) {
  .form-grid.two {
    grid-template-columns: 1fr;
  }
}

/* Professional admin upgrade */
.dashboard-pro { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 16px; margin: 16px 0; }
.pro-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; grid-column: 1 / -1; }
.pro-metrics > div { background: #fff; border: 1px solid #e6ebf2; border-radius: 16px; padding: 16px; box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04); }
.pro-metrics strong { display: block; font-size: 26px; color: #111827; }
.pro-metrics span { color: #64748b; font-size: 13px; }
.pro-panel.wide { grid-column: span 1; }
.trend-bars { display: flex; align-items: flex-end; gap: 10px; min-height: 120px; padding: 12px 0 4px; }
.trend-item { flex: 1; min-width: 0; text-align: center; color: #64748b; font-size: 12px; }
.trend-item b { display: block; width: 18px; margin: 8px auto; border-radius: 999px 999px 4px 4px; background: linear-gradient(180deg, #2563eb, #93c5fd); }
.trend-item em { display: block; font-style: normal; transform: scale(.9); white-space: nowrap; }
.rank-list { display: grid; gap: 10px; }
.rank-list > div { display: grid; grid-template-columns: 28px 1fr auto; align-items: center; gap: 10px; padding: 10px; border-radius: 12px; background: #f8fafc; }
.rank-list b { display: grid; place-items: center; width: 24px; height: 24px; border-radius: 999px; background: #e0ecff; color: #1d4ed8; }
.rank-list span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rank-list strong { color: #0f172a; }
.status-badge { border-radius: 999px; padding: 2px 8px; font-size: 12px; background: #eef2ff; color: #3730a3; }
.status-badge.published { background: #dcfce7; color: #166534; }
.status-badge.pending { background: #fef9c3; color: #854d0e; }
.status-badge.draft { background: #e2e8f0; color: #334155; }
.status-badge.rejected { background: #fee2e2; color: #991b1b; }
.status-badge.recycle, .status-badge.archived { background: #f1f5f9; color: #475569; }
.activation-batch-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; margin: 12px 0; }
.batch-list-title { grid-column: 1 / -1; font-weight: 700; color: #334155; }
.batch-item { border: 1px solid #e2e8f0; border-radius: 14px; padding: 12px; background: #f8fafc; display: grid; gap: 4px; }
.batch-item strong { color: #0f172a; }
.batch-item span, .batch-item small { color: #64748b; font-size: 12px; }
.system-grid { display: grid; grid-template-columns: minmax(320px, .9fr) 1.1fr; gap: 16px; }
.system-grid .wide { grid-column: 1 / -1; }
.admin-account-list, .operation-log-list, .import-job-list { display: grid; gap: 10px; }
.admin-account-row { display: flex; justify-content: space-between; gap: 12px; align-items: center; padding: 12px; border-radius: 14px; background: #f8fafc; border: 1px solid #e2e8f0; }
.admin-account-row div:first-child, .log-row, .import-job-row { display: grid; gap: 3px; }
.admin-account-row span, .admin-account-row small, .log-row span, .log-row small, .import-job-row span, .import-job-row small { color: #64748b; font-size: 12px; }
.log-row, .import-job-row { padding: 12px; border-radius: 14px; border: 1px solid #e2e8f0; background: #fff; }
@media (max-width: 1100px) { .dashboard-pro, .system-grid { grid-template-columns: 1fr; } .pro-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); } .system-grid .wide { grid-column: auto; } }

/* 反馈纠错后台：工作台式布局 */
.feedback-workbench {
  display: grid;
  gap: 16px;
}

.compact-title {
  align-items: flex-start;
}

.compact-title p {
  margin: 4px 0 0;
  color: #667085;
  font-size: 13px;
  line-height: 1.55;
}

.feedback-overview {
  padding-bottom: 16px;
}

.feedback-stats.compact {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.feedback-stat {
  appearance: none;
  width: 100%;
  min-height: 88px;
  padding: 14px 16px;
  border: 1px solid #e5edf3;
  border-radius: 18px;
  background: #f8fafc;
  text-align: left;
  cursor: default;
  box-shadow: none;
}

.feedback-stat span {
  display: block;
  color: #111827;
  font-size: 28px;
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1;
}

.feedback-stat small {
  display: block;
  margin-top: 8px;
  color: #667085;
  font-size: 13px;
  font-weight: 900;
}

.feedback-stat.all { background: linear-gradient(135deg, #f8fafc, #eefdf8); }
.feedback-stat.warn { background: #fff7ed; border-color: #fed7aa; }
.feedback-stat.info { background: #eff6ff; border-color: #bfdbfe; }
.feedback-stat.ok { background: #ecfdf3; border-color: #bbf7d0; }
.feedback-stat.muted { background: #f3f4f6; border-color: #e5e7eb; }

.feedback-filter-card {
  padding: 14px 16px;
}

.feedback-filter-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 180px 220px auto;
  gap: 12px;
  align-items: end;
}

.feedback-filter-grid label {
  display: grid;
  gap: 6px;
  margin: 0;
}

.feedback-filter-grid label span {
  color: #64748b;
  font-size: 12px;
  font-weight: 900;
}

.feedback-filter-grid input,
.feedback-filter-grid select {
  width: 100%;
}

.feedback-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 16px;
  align-items: start;
}

.feedback-list-panel,
.feedback-side-panel {
  min-width: 0;
}

.feedback-list {
  display: grid;
  gap: 12px;
}

.feedback-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 150px;
  gap: 16px;
  padding: 16px;
  border: 1px solid #e5edf3;
  border-left: 4px solid #f59e0b;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 8px 22px rgba(15, 23, 42, .04);
}

.feedback-card.info { border-left-color: #3b82f6; }
.feedback-card.ok { border-left-color: #16a34a; }
.feedback-card.muted { border-left-color: #9ca3af; }

.feedback-card-main {
  min-width: 0;
}

.feedback-card-top,
.feedback-badges,
.feedback-actions-panel,
.feedback-meta-grid {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.feedback-card-top {
  justify-content: space-between;
  margin-bottom: 8px;
}

.feedback-time {
  color: #94a3b8;
  font-size: 12px;
  font-weight: 800;
}

.feedback-type,
.feedback-status {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;
  white-space: nowrap;
}

.feedback-type {
  color: #075985;
  background: #e0f2fe;
}

.feedback-status.warn { color: #92400e; background: #fef3c7; }
.feedback-status.info { color: #1d4ed8; background: #dbeafe; }
.feedback-status.ok { color: #166534; background: #dcfce7; }
.feedback-status.muted { color: #4b5563; background: #f3f4f6; }

.feedback-card h3 {
  margin: 0 0 10px;
  color: #111827;
  font-size: 17px;
  line-height: 1.5;
}

.feedback-content {
  margin: 0 0 12px;
  padding: 12px 14px;
  color: #111827;
  line-height: 1.65;
  white-space: pre-wrap;
  background: #f8fafc;
  border: 1px solid #edf2f7;
  border-radius: 14px;
}

.feedback-meta-grid {
  color: #667085;
  font-size: 12px;
  line-height: 1.5;
}

.feedback-meta-grid span {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.feedback-remark {
  margin-top: 12px;
  padding: 10px 12px;
  color: #475467;
  line-height: 1.6;
  white-space: pre-wrap;
  background: #ffffbf;
  border: 1px solid #f5e9a8;
  border-radius: 12px;
}

.feedback-remark strong {
  display: block;
  margin-bottom: 4px;
  color: #92400e;
}

.feedback-actions-panel {
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
}

.feedback-actions-panel button {
  width: 100%;
  padding: 8px 10px;
  font-size: 13px;
}

.feedback-actions-panel .ok {
  color: #166534;
  border-color: #bbf7d0;
  background: #ecfdf3;
}

.feedback-actions-panel .primary-link {
  color: #0f766e;
  border-color: #99f6e4;
  background: #f0fdfa;
}

.feedback-type-stats {
  display: grid;
  gap: 10px;
}

.feedback-type-row {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #e5edf3;
  border-radius: 14px;
  background: #fff;
  color: #334155;
  text-align: left;
  cursor: pointer;
}

.feedback-type-row span,
.feedback-type-row strong {
  position: relative;
  z-index: 1;
}

.feedback-type-row strong {
  color: #0f172a;
}

.feedback-type-row i {
  position: absolute;
  inset: auto auto 0 0;
  height: 3px;
  background: #16a085;
  opacity: .7;
}

.feedback-type-empty {
  padding: 14px;
  color: #94a3b8;
  background: #f8fafc;
  border: 1px dashed #cbd5e1;
  border-radius: 14px;
  text-align: center;
}

.feedback-guide {
  margin-top: 16px;
  padding: 14px;
  border-radius: 16px;
  background: #f8fafc;
  border: 1px solid #e5edf3;
}

.feedback-guide strong {
  color: #0f172a;
}

.feedback-guide p {
  margin: 6px 0 0;
  color: #667085;
  font-size: 13px;
  line-height: 1.6;
}

.feedback-empty {
  display: grid;
  gap: 6px;
  min-height: 160px;
  align-content: center;
}

.feedback-empty strong {
  color: #0f172a;
  font-size: 16px;
}

.feedback-empty span {
  color: #667085;
}

.feedback-detail {
  display: grid;
  gap: 14px;
}

.feedback-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 14px;
}

.feedback-detail-question {
  padding: 14px;
  border-radius: 14px;
  background: #f8fafc;
  border: 1px solid #e5edf3;
}

.feedback-detail-question strong {
  display: block;
  margin-bottom: 6px;
  color: #111827;
  font-size: 17px;
  line-height: 1.5;
}

.feedback-detail-question p {
  margin: 0;
  color: #667085;
}

.feedback-detail textarea {
  min-height: 110px;
}

@media (max-width: 1180px) {
  .feedback-stats.compact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .feedback-workspace {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .feedback-stats.compact,
  .feedback-filter-grid,
  .feedback-card,
  .feedback-detail-grid {
    grid-template-columns: 1fr;
  }
  .feedback-actions-panel {
    flex-direction: row;
  }
  .feedback-actions-panel button {
    width: auto;
    flex: 1 1 120px;
  }
}