.lesson-card-page {
  width: min(1600px, 100%);
}

.lesson-card-hero {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 22px;
  margin-bottom: 16px;
}

.lesson-card-hero h1 {
  margin: 0;
  font-size: clamp(26px, 3.5vw, 42px);
  letter-spacing: -0.035em;
}

.lesson-card-hero > div:first-child > p:not(.eyebrow) {
  margin: 8px 0 0;
  color: var(--muted);
}

.lesson-card-meta {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.lesson-card-meta span {
  padding: 4px 8px;
  border-radius: 999px;
  color: #49658e;
  background: #eef3ff;
  font-size: 10px;
  font-weight: 800;
}

.lesson-card-scorecard {
  display: grid;
  grid-template-columns: repeat(4, minmax(82px, 1fr));
  gap: 8px;
}

.lesson-card-scorecard > div {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.88);
  text-align: center;
  box-shadow: var(--shadow-soft);
}

.lesson-card-scorecard strong,
.lesson-card-scorecard span {
  display: block;
}

.lesson-card-scorecard strong {
  color: #315b9c;
  font-size: 21px;
}

.lesson-card-scorecard span {
  color: var(--muted);
  font-size: 10px;
}

.lesson-stage-tabs {
  display: flex;
  gap: 7px;
  margin-bottom: 13px;
  padding: 4px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.86);
  scrollbar-width: none;
}

.lesson-stage-tabs::-webkit-scrollbar {
  display: none;
}

.lesson-stage-tabs button {
  flex: 1 0 auto;
  border: 0;
  border-radius: 9px;
  padding: 8px 14px;
  color: #596b84;
  background: transparent;
  font-size: 12px;
  font-weight: 900;
}

.lesson-stage-tabs button.active {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 5px 13px rgba(49, 94, 251, 0.2);
}

.lesson-card-layout {
  display: grid;
  grid-template-columns: minmax(230px, 0.62fr) minmax(480px, 1.5fr) minmax(280px, 0.86fr);
  align-items: start;
  gap: 14px;
}

.lesson-module-panel,
.lesson-side-panel {
  position: sticky;
  top: 80px;
  overflow: hidden;
}

.lesson-module-list {
  display: grid;
  gap: 7px;
  max-height: calc(100vh - 250px);
  overflow-y: auto;
  padding: 10px;
}

.lesson-module-button {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 10px;
  color: #405573;
  background: #fbfcff;
  text-align: left;
}

.lesson-module-button strong,
.lesson-module-button span {
  display: block;
}

.lesson-module-button strong {
  font-size: 12px;
}

.lesson-module-button span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 10px;
}

.lesson-module-button.active {
  border-color: #9eb9ee;
  background: #f1f6ff;
  box-shadow: 0 5px 14px rgba(49, 94, 251, 0.08);
}

.lesson-module-badge {
  padding: 4px 7px;
  border-radius: 999px;
  color: #8a6507;
  background: #fff6d8;
  font-size: 9px;
  font-weight: 900;
}

.lesson-module-badge.ready {
  color: #197153;
  background: #e8f8f1;
}

.lesson-module-badge.optional,
.lesson-module-badge.none {
  color: #49658e;
  background: #eef3ff;
}

.lesson-module-badge.required {
  color: #9a5d00;
  background: #fff3dc;
}

.lesson-content-panel {
  min-height: 480px;
  overflow: hidden;
}

.lesson-content-head {
  padding: 17px 18px 13px;
  border-bottom: 1px solid var(--line);
}

.lesson-content-head h2 {
  margin: 0;
  font-size: 20px;
}

.lesson-content-head p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 11px;
}

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

.lesson-content-head-action > div {
  min-width: 0;
}

.lesson-content-head-action .btn {
  flex: 0 0 auto;
}

.lesson-content-body {
  display: grid;
  gap: 14px;
  padding: 16px 18px 20px;
}

.lesson-stage-card {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fbfcff;
}

.lesson-stage-card h3 {
  margin: 0 0 8px;
  color: #36547e;
  font-size: 14px;
}

.lesson-stage-card p {
  margin: 0;
  color: #596b84;
  font-size: 12px;
  line-height: 1.7;
}

.lesson-test-list {
  display: grid;
  gap: 9px;
}

.lesson-test-item {
  padding: 11px;
  border: 1px solid #dce4f1;
  border-radius: 11px;
  background: #fff;
}

.lesson-test-item header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: #526987;
  font-size: 10px;
  font-weight: 800;
}

.lesson-test-stem {
  margin-top: 6px;
  color: #243650;
  font-size: 13px;
  font-weight: 750;
}

.lesson-test-options {
  display: grid;
  gap: 4px;
  margin-top: 7px;
  color: #586b84;
  font-size: 11px;
}

.lesson-test-answer {
  margin-top: 8px;
  padding-top: 7px;
  border-top: 1px dashed var(--line);
  color: #32644f;
  font-size: 11px;
}

.lesson-knowledge-filters {
  display: flex;
  gap: 5px;
  padding: 9px 10px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
}

.lesson-knowledge-filters button {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 4px 7px;
  color: #63728a;
  background: #f7f9fd;
  font-size: 9px;
  font-weight: 800;
  white-space: nowrap;
}

.lesson-knowledge-filters button.active {
  border-color: var(--blue);
  color: #fff;
  background: var(--blue);
}

.lesson-knowledge-list {
  display: grid;
  gap: 7px;
  max-height: calc(100vh - 310px);
  overflow-y: auto;
  padding: 9px;
}

.lesson-knowledge-item {
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fbfcff;
}

.lesson-knowledge-item.must {
  border-color: #ebcf73;
  background: #fffcf2;
}

.lesson-knowledge-type {
  margin-bottom: 4px;
  color: #6e7f99;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lesson-knowledge-title {
  display: flex;
  align-items: baseline;
  gap: 5px;
  flex-wrap: wrap;
  margin: 0;
  color: #172d4e;
  font-size: 16px;
  font-weight: 900;
  line-height: 1.35;
}

.lesson-knowledge-title em {
  color: #7d6a2b;
  font-size: 12px;
  font-style: normal;
  font-weight: 800;
}

.lesson-knowledge-item.must .lesson-knowledge-title em {
  color: #a26700;
}

.lesson-knowledge-meaning {
  margin: 7px 0 0;
  color: #3e516d;
  font-size: 12.5px;
  font-weight: 650;
  line-height: 1.65;
}

.lesson-knowledge-extension {
  margin: 6px 0 0;
  color: #7a8799;
  font-size: 11px;
  line-height: 1.6;
}

.lesson-empty-inline {
  padding: 18px;
  border: 1px dashed var(--line-strong);
  border-radius: 11px;
  color: var(--muted);
  background: #fbfcff;
  font-size: 11px;
  text-align: center;
}

.lesson-module-content {
  display: grid;
  gap: 14px;
}

.lesson-content-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 4px;
}

.lesson-content-section-head h3 {
  margin: 0;
  color: #2f5078;
  font-size: 17px;
}

.lesson-content-kicker {
  display: block;
  margin-bottom: 2px;
  color: #7284a0;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.grammar-passage {
  padding: 15px;
  border: 1px solid #dbe4f2;
  border-radius: 13px;
  background: #fbfcff;
}

.grammar-passage-paragraph {
  margin: 0 0 12px;
  color: #24364f;
  font: 16px/1.85 Georgia, "Times New Roman", serif;
  text-indent: 2em;
}

.grammar-passage-paragraph:last-child {
  margin-bottom: 0;
}

.grammar-blank-token {
  padding: 1px 3px;
  border: 0;
  border-radius: 5px;
  color: #244fc8;
  background: #edf3ff;
  cursor: pointer;
  font: inherit;
  line-height: inherit;
  font-weight: 900;
}

.grammar-blank-token:hover,
.grammar-blank-token.active {
  background: #dfeaff;
  box-shadow: 0 0 0 3px rgba(49, 94, 251, 0.1);
}

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

.grammar-blank-item {
  padding: 13px;
  border: 1px solid #dce4f1;
  border-radius: 12px;
  background: #fff;
}

.grammar-blank-item > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: #516987;
  font-size: 10px;
}

.grammar-blank-item > header strong {
  color: #315b9c;
  font-size: 12px;
}

.grammar-sentence {
  margin: 8px 0 0;
  color: #1f3049;
  font: 14px/1.7 Georgia, "Times New Roman", serif;
}

.grammar-sentence-blank {
  padding: 2px 5px;
  border-radius: 6px;
  color: #244fc8;
  background: #edf3ff;
  font-weight: 900;
}

.grammar-hint {
  margin: 7px 0 0;
  color: #765c15;
  font-size: 11px;
}

.grammar-options {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.grammar-options span {
  padding: 4px 7px;
  border-radius: 8px;
  color: #4b5f7b;
  background: #f3f6fb;
  font-size: 11px;
  font-weight: 700;
}

.grammar-answer-box {
  display: grid;
  gap: 5px;
  margin-top: 10px;
  padding: 10px;
  border: 1px solid #cfe2d8;
  border-radius: 10px;
  color: #38584c;
  background: #f3fbf7;
}

.grammar-answer-box p {
  margin: 0;
  font-size: 11px;
  line-height: 1.65;
}

.grammar-answer-box strong {
  color: #1f674f;
}

.grammar-answer-box .grammar-mistake {
  color: #8a5725;
}

.grammar-variant {
  margin-top: 4px;
  padding-top: 7px;
  border-top: 1px dashed #cfe2d8;
}

.grammar-variant > strong {
  display: block;
  margin-bottom: 3px;
}

.grammar-analysis-panel {
  width: min(1240px, 100%);
  height: calc(100vh - 44px);
}

.grammar-analysis-head-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.grammar-analysis-body {
  min-height: 0;
  overflow-y: auto;
  padding: 18px;
  background: #f7f9fd;
}

.grammar-analysis-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin: 0 auto 14px;
  padding: 9px;
  border: 1px solid #dce4f1;
  border-radius: 12px;
  background: #fff;
}

.grammar-analysis-nav-spacer {
  flex: 1 1 12px;
}

.grammar-analysis-jump {
  width: 28px;
  height: 28px;
  border: 1px solid #dce4f1;
  border-radius: 8px;
  color: #63799b;
  background: #f7f9fd;
  font-size: 11px;
  font-weight: 900;
}

.grammar-analysis-jump.active {
  border-color: var(--blue);
  color: #fff;
  background: var(--blue);
}

.grammar-analysis-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
  align-items: start;
  gap: 14px;
}

.grammar-analysis-structure-card,
.grammar-analysis-passage-card,
.grammar-analysis-detail-card {
  padding: 16px;
  border: 1px solid #dce4f1;
  border-radius: 14px;
  background: #fff;
}

.grammar-analysis-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.grammar-analysis-section-head h3 {
  margin: 0;
  color: #2f5078;
  font-size: 17px;
}

.grammar-analysis-passage {
  max-height: calc(100vh - 310px);
  overflow-y: auto;
  margin-top: 12px;
  padding: 14px;
  border: 1px solid #e0e8f4;
  border-radius: 12px;
  background: #fbfcff;
}

.grammar-analysis-passage .grammar-passage-paragraph {
  font-size: 15px;
  line-height: 1.85;
}

.grammar-analysis-passage-note {
  margin: 9px 0 0;
  color: #71829b;
  font-size: 10.5px;
  line-height: 1.6;
}

.grammar-annotated-sentence,
.cloze-annotated-sentence {
  display: inline;
}

.grammar-inline-part,
.cloze-inline-part {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  vertical-align: middle;
  margin: 0 2px;
  padding: 4px 6px;
  border: 1px solid #dbe4f2;
  border-radius: 8px;
  background: #fff;
}

.grammar-inline-part em,
.cloze-inline-part em {
  color: #7284a0;
  font-size: 9px;
  font-style: normal;
  font-weight: 900;
  line-height: 1;
}

.grammar-inline-part strong,
.cloze-inline-part strong {
  color: #24364f;
  font: 12.5px/1.55 Georgia, "Times New Roman", serif;
  white-space: pre-wrap;
}

.grammar-inline-join,
.cloze-inline-join {
  margin: 0 2px;
  color: #8da0bb;
  font-weight: 900;
}

.grammar-part-flow {
  display: flex;
  align-items: stretch;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
  padding: 14px;
  border: 1px solid #e0e8f4;
  border-radius: 12px;
  background: #fbfcff;
}

.grammar-part {
  min-width: 120px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 9px;
  border: 1px solid #dbe4f2;
  border-radius: 10px;
  background: #fff;
}

.grammar-part em {
  color: #7284a0;
  font-size: 10px;
  font-style: normal;
  font-weight: 900;
}

.grammar-part strong {
  color: #24364f;
  font: 13px/1.65 Georgia, "Times New Roman", serif;
}

.grammar-part.role-subject,
.grammar-inline-part.role-subject,
.cloze-inline-part.role-subject,
.reading-fill-inline-part.role-subject {
  border-color: #b9d3ff;
  background: #f4f8ff;
}

.grammar-part.role-predicate,
.grammar-inline-part.role-predicate,
.cloze-inline-part.role-predicate,
.reading-fill-inline-part.role-predicate {
  border-color: #bfe4d2;
  background: #f4fbf7;
}

.grammar-part.role-object,
.grammar-inline-part.role-object,
.cloze-inline-part.role-object,
.reading-fill-inline-part.role-object {
  border-color: #ead49b;
  background: #fffdf4;
}

.grammar-part.role-adverbial,
.grammar-inline-part.role-adverbial,
.cloze-inline-part.role-adverbial,
.reading-fill-inline-part.role-adverbial {
  border-color: #d8c9ee;
  background: #faf7ff;
}

.grammar-part-plus,
.grammar-structure-arrow {
  align-self: center;
  color: #8da0bb;
  font-weight: 900;
}

.grammar-analysis-blank {
  padding: 1px 3px;
  border-radius: 4px;
  color: #244fc8;
  background: #edf3ff;
  font-weight: 900;
}

.grammar-structure-card {
  margin-top: 14px;
  padding: 12px;
  border: 1px solid #e0e8f4;
  border-radius: 11px;
  background: #fbfcff;
}

.grammar-structure-card h4,
.grammar-detail-block h4,
.grammar-variant-head h4 {
  margin: 0;
  color: #315b9c;
  font-size: 13px;
}

.grammar-structure-flow {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 9px;
}

.grammar-structure-tag {
  padding: 5px 7px;
  border-radius: 7px;
  color: #4b5f7b;
  background: #eef3ff;
  font-size: 11px;
  font-weight: 800;
}

.grammar-structure-card p {
  margin: 9px 0 0;
  color: #596b84;
  font-size: 12px;
  line-height: 1.7;
}

.grammar-analysis-answer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid #d5e1f4;
  border-radius: 11px;
  color: #63799b;
  background: #f2f6ff;
}

.grammar-analysis-answer span {
  font-size: 11px;
  font-weight: 900;
}

.grammar-analysis-answer strong {
  font-size: 20px;
}

.grammar-analysis-answer.revealed {
  border-color: #bfe4d2;
  color: #25694e;
  background: #f1fbf6;
}

.grammar-detail-block {
  padding: 12px 0;
  border-bottom: 1px solid #edf1f7;
}

.grammar-detail-block:last-of-type {
  border-bottom: 0;
}

.grammar-detail-block p {
  margin: 6px 0 0;
  color: #3e516d;
  font-size: 12px;
  line-height: 1.75;
}

.grammar-detail-block.mistake h4 {
  color: #9a5d00;
}

.grammar-detail-block.mistake p {
  color: #7d5a22;
}

.grammar-variant-box {
  margin-top: 14px;
  padding: 12px;
  border: 1px dashed #c9b478;
  border-radius: 12px;
  background: #fffdf5;
}

.grammar-variant-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.grammar-variant-question {
  margin: 9px 0 0;
  color: #24364f;
  font-size: 12px;
  line-height: 1.7;
}

.grammar-variant-answer {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px dashed #e3d59f;
}

.grammar-variant-answer p {
  margin: 0 0 4px;
  color: #5f6f85;
  font-size: 11px;
  line-height: 1.6;
}

.grammar-variant-answer strong {
  color: #25694e;
}

.grammar-analysis-hint {
  margin: 14px 0 0;
  color: #71829b;
  font-size: 11px;
  text-align: center;
}

.cloze-passage {
  padding: 15px;
  border: 1px solid #dbe4f2;
  border-radius: 13px;
  background: #fbfcff;
}

.cloze-passage-paragraph {
  margin: 0 0 12px;
  color: #24364f;
  font: 16px/1.85 Georgia, "Times New Roman", serif;
  text-indent: 2em;
}

.cloze-passage-paragraph:last-child {
  margin-bottom: 0;
}

.cloze-blank-token {
  padding: 1px 4px;
  border: 0;
  border-radius: 5px;
  color: #244fc8;
  background: #edf3ff;
  cursor: pointer;
  font: inherit;
  line-height: inherit;
  font-weight: 900;
}

.cloze-blank-token:hover,
.cloze-blank-token.active {
  background: #dfeaff;
  box-shadow: 0 0 0 3px rgba(49, 94, 251, 0.1);
}

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

.cloze-question-item {
  padding: 13px;
  border: 1px solid #dce4f1;
  border-radius: 12px;
  background: #fff;
}

.cloze-question-item > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: #516987;
  font-size: 10px;
}

.cloze-question-item > header strong {
  color: #315b9c;
  font-size: 12px;
}

.cloze-question-item > header code {
  padding: 3px 6px;
  border-radius: 6px;
  color: #244fc8;
  background: #edf3ff;
  font-size: 10px;
  font-weight: 900;
}

.cloze-option-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin: 9px 0 0;
  padding: 0;
  list-style: none;
}

.cloze-option-item {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  min-width: 0;
  padding: 7px 8px;
  border: 1px solid #e5ebf5;
  border-radius: 9px;
  color: #4b5f7b;
  background: #f8fafd;
  font-size: 12px;
  font-weight: 700;
}

.cloze-option-item strong {
  flex: 0 0 18px;
  color: #315b9c;
  font-size: 11px;
}

.cloze-option-item.correct {
  border-color: #9ed5bd;
  color: #25694e;
  background: #effaf5;
}

.cloze-option-item.correct strong {
  color: #1f674f;
}

.cloze-answer-box {
  display: grid;
  gap: 5px;
  margin-top: 10px;
  padding: 10px;
  border: 1px solid #cfe2d8;
  border-radius: 10px;
  color: #38584c;
  background: #f3fbf7;
}

.cloze-answer-box p {
  margin: 0;
  font-size: 11px;
  line-height: 1.65;
}

.cloze-answer-box strong {
  color: #1f674f;
}

.cloze-option-knowledge {
  display: grid;
  gap: 5px;
  margin-top: 4px;
  padding-top: 7px;
  border-top: 1px dashed #cfe2d8;
}

.cloze-option-knowledge-item {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 2px 6px;
  font-size: 11px;
}

.cloze-option-knowledge-item strong {
  grid-row: 1 / span 2;
  color: #1f674f;
}

.cloze-option-knowledge-item span {
  color: #38584c;
}

.cloze-option-knowledge-item small {
  color: #6f847b;
  font-size: 10px;
  line-height: 1.5;
}

.cloze-structure-bars {
  display: grid;
  gap: 6px;
  margin-top: 8px;
}

.cloze-structure-bar {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
  padding: 7px 8px;
  border: 1px solid #e0e8f4;
  border-radius: 8px;
  background: #fbfcff;
}

.cloze-structure-bar em {
  color: #7284a0;
  font-size: 10px;
  font-style: normal;
  font-weight: 900;
}

.cloze-structure-bar strong {
  color: #24364f;
  font: 11.5px/1.6 Georgia, "Times New Roman", serif;
}

.cloze-analysis-sections {
  display: grid;
  gap: 6px;
  margin-top: 8px;
}

.cloze-analysis-section {
  padding: 8px 9px;
  border-radius: 8px;
  background: #fbfcff;
}

.cloze-analysis-section strong {
  color: #315b9c;
  font-size: 11px;
}

.cloze-analysis-section p {
  margin: 4px 0 0;
  color: #3e516d;
  font-size: 11px;
  line-height: 1.65;
}

.cloze-analysis-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin-top: 8px;
}

.cloze-analysis-option {
  padding: 8px;
  border: 1px solid #e0e8f4;
  border-radius: 9px;
  background: #fbfcff;
}

.cloze-analysis-option.correct {
  border-color: #9ed5bd;
  background: #effaf5;
}

.cloze-analysis-option-head {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.cloze-analysis-option-head strong {
  color: #315b9c;
  font-size: 11px;
}

.cloze-analysis-option.correct .cloze-analysis-option-head strong {
  color: #1f674f;
}

.cloze-analysis-option-head span {
  color: #24364f;
  font-size: 12px;
  font-weight: 800;
}

.cloze-analysis-option p {
  margin: 4px 0 0;
  color: #3e516d;
  font-size: 10.5px;
  line-height: 1.55;
}

.cloze-analysis-option small {
  display: block;
  margin-top: 3px;
  color: #7a8799;
  font-size: 10px;
  line-height: 1.5;
}

.cloze-analysis-empty {
  margin: 8px 0 0;
  color: #71829b;
  font-size: 11px;
}

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

.cloze-review-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid #dce4f1;
  border-radius: 12px;
  background: #fff;
}

.cloze-review-card > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 10px;
  border-bottom: 1px solid #e4ebf5;
  background: #f7f9fd;
}

.cloze-review-card h4 {
  margin: 0;
  color: #315b9c;
  font-size: 12px;
}

.cloze-review-card > header span {
  color: #7a8799;
  font-size: 9px;
  font-weight: 800;
}

.cloze-review-list {
  display: grid;
  gap: 0;
  max-height: 560px;
  overflow-y: auto;
  padding: 0 10px;
}

.cloze-review-item,
.cloze-review-text {
  margin: 0;
  padding: 9px 0;
  border-bottom: 1px solid #edf1f7;
}

.cloze-review-item:last-child,
.cloze-review-text:last-child {
  border-bottom: 0;
}

.cloze-review-word {
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}

.cloze-review-word strong {
  color: #1f3d68;
  font-size: 12px;
}

.cloze-review-word span {
  color: #7384a0;
  font-size: 10px;
}

.cloze-review-word em {
  padding: 2px 4px;
  border-radius: 5px;
  color: #5b6990;
  background: #eef2fa;
  font-size: 9px;
  font-style: normal;
  font-weight: 800;
}

.cloze-review-item p {
  margin: 4px 0 0;
  color: #3e516d;
  font-size: 11px;
  font-weight: 700;
}

.cloze-review-item small {
  display: block;
  margin-top: 3px;
  color: #7a8799;
  font-size: 10px;
  line-height: 1.5;
}

.cloze-review-text {
  color: #4c607c;
  font-size: 10.5px;
  line-height: 1.65;
  white-space: pre-line;
}

.reading-paper-tabs {
  display: flex;
  gap: 7px;
  overflow-x: auto;
  padding-bottom: 3px;
}

.reading-paper-tab {
  flex: 1 0 150px;
  min-width: 150px;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  align-items: center;
  gap: 7px;
  padding: 9px;
  border: 1px solid #dce4f1;
  border-radius: 10px;
  color: #536985;
  background: #fbfcff;
  text-align: left;
}

.reading-paper-tab strong {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 7px;
  color: #315b9c;
  background: #edf3ff;
  font-size: 11px;
}

.reading-paper-tab span {
  min-width: 0;
  overflow: hidden;
  color: #65758d;
  font-size: 10px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reading-paper-tab.active {
  border-color: #9eb9ee;
  background: #f1f6ff;
  box-shadow: 0 5px 14px rgba(49, 94, 251, 0.08);
}

.reading-paper-tab.active strong {
  color: #fff;
  background: var(--blue);
}

.reading-paper-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border: 1px solid #dce4f1;
  border-radius: 12px;
  background: #f7f9fd;
}

.reading-paper-head h3 {
  margin: 0;
  color: #2f5078;
  font-size: 16px;
}

.reading-paper-head p {
  margin: 4px 0 0;
  color: #71829b;
  font-size: 10px;
}

.reading-passage {
  padding: 15px;
  border: 1px solid #dbe4f2;
  border-radius: 13px;
  background: #fbfcff;
}

.reading-passage-paragraph {
  margin: 0 0 12px;
  color: #24364f;
  font: 16px/1.85 Georgia, "Times New Roman", serif;
  text-indent: 2em;
}

.reading-passage-paragraph:last-child {
  margin-bottom: 0;
}

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

.reading-question-item {
  padding: 13px;
  border: 1px solid #dce4f1;
  border-radius: 12px;
  background: #fff;
}

.reading-question-item > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: #516987;
  font-size: 10px;
}

.reading-question-item > header strong {
  color: #315b9c;
  font-size: 12px;
}

.reading-question-stem {
  margin: 8px 0 0;
  color: #24364f;
  font-size: 13px;
  font-weight: 800;
  line-height: 1.65;
}

.reading-option-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin-top: 9px;
}

.reading-option {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 2px 6px;
  padding: 7px 8px;
  border: 1px solid #e5ebf5;
  border-radius: 9px;
  color: #4b5f7b;
  background: #f8fafd;
  font-size: 12px;
  font-weight: 700;
}

.reading-option strong {
  grid-row: 1 / span 2;
  color: #315b9c;
  font-size: 11px;
}

.reading-option small {
  grid-column: 2;
  color: #7a8799;
  font-size: 10px;
  line-height: 1.5;
}

.reading-option.correct {
  border-color: #9ed5bd;
  color: #25694e;
  background: #effaf5;
}

.reading-option.correct strong {
  color: #1f674f;
}

.reading-answer-box {
  display: grid;
  gap: 5px;
  margin-top: 10px;
  padding: 10px;
  border: 1px solid #cfe2d8;
  border-radius: 10px;
  color: #38584c;
  background: #f3fbf7;
}

.reading-answer-box p {
  margin: 0;
  font-size: 11px;
  line-height: 1.65;
}

.reading-answer-box strong {
  color: #1f674f;
}

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

.reading-review-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid #dce4f1;
  border-radius: 12px;
  background: #fff;
}

.reading-review-card > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 10px;
  border-bottom: 1px solid #e4ebf5;
  background: #f7f9fd;
}

.reading-review-card h4 {
  margin: 0;
  color: #315b9c;
  font-size: 12px;
}

.reading-review-card > header span {
  color: #7a8799;
  font-size: 9px;
  font-weight: 800;
}

.reading-review-list {
  margin: 0;
  padding: 8px 12px 10px 27px;
  color: #4c607c;
  font-size: 10.5px;
  line-height: 1.7;
  white-space: pre-line;
}

.reading-review-list li {
  margin: 3px 0;
}

.reading-review-word-list {
  display: grid;
  gap: 0;
  padding: 0 10px;
}

.reading-review-word {
  padding: 9px 0;
  border-bottom: 1px solid #edf1f7;
}

.reading-review-word:last-child {
  border-bottom: 0;
}

.reading-review-word > div {
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}

.reading-review-word strong {
  color: #1f3d68;
  font-size: 12px;
}

.reading-review-word span {
  color: #7384a0;
  font-size: 10px;
}

.reading-review-word em {
  padding: 2px 4px;
  border-radius: 5px;
  color: #5b6990;
  background: #eef2fa;
  font-size: 9px;
  font-style: normal;
  font-weight: 800;
}

.reading-review-word p {
  margin: 4px 0 0;
  color: #3e516d;
  font-size: 11px;
  font-weight: 700;
}

.reading-review-word small {
  display: block;
  margin-top: 3px;
  color: #7a8799;
  font-size: 10px;
  line-height: 1.5;
}

.reading-fill-meta {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  color: #647792;
  font-size: 10px;
}

.reading-fill-meta span {
  padding: 4px 7px;
  border-radius: 999px;
  background: #eef3ff;
  font-weight: 800;
}

.reading-fill-passage {
  padding: 15px;
  border: 1px solid #dbe4f2;
  border-radius: 13px;
  background: #fbfcff;
}

.reading-fill-passage-paragraph {
  margin: 0 0 12px;
  color: #24364f;
  font: 16px/1.85 Georgia, "Times New Roman", serif;
  text-indent: 2em;
}

.reading-fill-passage-paragraph:last-child {
  margin-bottom: 0;
}

.reading-fill-blank-token {
  padding: 1px 4px;
  border: 0;
  border-radius: 5px;
  color: #244fc8;
  background: #edf3ff;
  cursor: pointer;
  font: inherit;
  line-height: inherit;
  font-weight: 900;
}

.reading-fill-blank-token:hover,
.reading-fill-blank-token.active {
  background: #dfeaff;
  box-shadow: 0 0 0 3px rgba(49, 94, 251, 0.1);
}

.reading-fill-option-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.reading-fill-option {
  padding: 10px;
  border: 1px solid #dce4f1;
  border-radius: 11px;
  background: #fff;
}

.reading-fill-option.correct {
  border-color: #9ed5bd;
  background: #effaf5;
}

.reading-fill-option-head {
  display: flex;
  align-items: flex-start;
  gap: 7px;
}

.reading-fill-option-head strong {
  flex: 0 0 20px;
  color: #315b9c;
  font-size: 12px;
}

.reading-fill-option.correct .reading-fill-option-head strong {
  color: #1f674f;
}

.reading-fill-option-head span {
  color: #24364f;
  font-size: 12px;
  font-weight: 750;
  line-height: 1.55;
}

.reading-fill-option p {
  margin: 6px 0 0 27px;
  color: #536985;
  font-size: 11px;
  line-height: 1.6;
}

.reading-fill-keywords {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 7px 0 0 27px;
}

.reading-fill-keywords small {
  flex: 0 0 auto;
  color: #7284a0;
  font-size: 10px;
  font-weight: 800;
}

.reading-fill-keywords span {
  color: #765c15;
  font-size: 10px;
  line-height: 1.5;
}

.reading-fill-option-answer {
  margin: 7px 0 0 27px;
  color: #1f674f;
  font-size: 10px;
  font-weight: 900;
}

.reading-fill-tip {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 11px 12px;
  border: 1px solid #cddaf1;
  border-radius: 11px;
  color: #4d6384;
  background: #f2f6ff;
  font-size: 11px;
  line-height: 1.6;
}

.reading-fill-tip strong {
  flex: 0 0 auto;
  color: #315b9c;
}

.reading-fill-blank-token + .reading-fill-blank-token {
  margin-left: 2px;
}

.reading-fill-inline-part {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  vertical-align: middle;
  margin: 0 2px;
  padding: 4px 6px;
  border: 1px solid #dbe4f2;
  border-radius: 8px;
  background: #fff;
}

.reading-fill-inline-part em {
  color: #7284a0;
  font-size: 9px;
  font-style: normal;
  font-weight: 900;
  line-height: 1;
}

.reading-fill-inline-part strong {
  color: #24364f;
  font: 12.5px/1.55 Georgia, "Times New Roman", serif;
  white-space: pre-wrap;
}

.reading-fill-inline-join {
  margin: 0 2px;
  color: #8da0bb;
  font-weight: 900;
}

.reading-fill-annotated-sentence {
  display: inline;
}

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

.reading-fill-review-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid #dce4f1;
  border-radius: 12px;
  background: #fff;
}

.reading-fill-review-card > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 10px;
  border-bottom: 1px solid #e4ebf5;
  background: #f7f9fd;
}

.reading-fill-review-card h4 {
  margin: 0;
  color: #315b9c;
  font-size: 12px;
}

.reading-fill-review-card > header span {
  color: #7a8799;
  font-size: 9px;
  font-weight: 800;
}

.reading-fill-review-card .reading-review-word-list,
.reading-fill-review-card .reading-review-list {
  max-height: 430px;
  overflow-y: auto;
}

.reading-fill-long-list {
  display: grid;
  gap: 0;
  max-height: 430px;
  overflow-y: auto;
  padding: 0 10px;
}

.reading-fill-long-item {
  padding: 10px 0;
  border-bottom: 1px solid #edf1f7;
}

.reading-fill-long-item:last-child {
  border-bottom: 0;
}

.reading-fill-long-item p {
  margin: 5px 0 0;
  color: #536985;
  font-size: 10.5px;
  line-height: 1.65;
}

.reading-fill-long-item p strong {
  color: #315b9c;
}

.reading-fill-long-sentence {
  color: #24364f !important;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 11.5px !important;
}

.reading-fill-structure-summary {
  margin: 10px 10px 0;
  color: #536985;
  font-size: 11px;
  line-height: 1.65;
}

.reading-fill-structure-parts {
  display: grid;
  gap: 6px;
  padding: 10px;
}

.reading-fill-structure-parts > div {
  padding: 8px;
  border: 1px solid #e5ebf5;
  border-radius: 9px;
  background: #fbfcff;
}

.reading-fill-structure-parts em {
  margin-right: 7px;
  color: #765c15;
  font-size: 10px;
  font-style: normal;
  font-weight: 900;
}

.reading-fill-structure-parts strong {
  color: #315b9c;
  font-size: 10px;
}

.reading-fill-structure-parts p {
  margin: 4px 0 0;
  color: #596b84;
  font-size: 10.5px;
  line-height: 1.6;
}

.reading-fill-review-card.method ul,
.reading-fill-review-card.culture ul {
  margin: 0;
  padding: 9px 12px 10px 27px;
  color: #4c607c;
  font-size: 10.5px;
  line-height: 1.65;
}

.reading-fill-analysis-passage .reading-fill-passage-paragraph {
  font-size: 15px;
  line-height: 1.85;
}

.reading-fill-analysis-boxes {
  display: grid;
  gap: 7px;
  margin-top: 12px;
}

.reading-fill-analysis-box {
  padding: 9px 10px;
  border: 1px solid #e0e8f4;
  border-radius: 9px;
  background: #fbfcff;
}

.reading-fill-analysis-box h4 {
  margin: 0;
  color: #315b9c;
  font-size: 11px;
}

.reading-fill-analysis-box p {
  margin: 5px 0 0;
  color: #3e516d;
  font-size: 11px;
  line-height: 1.65;
}

.reading-fill-analysis-box.answer-option {
  border-color: #9ed5bd;
  background: #effaf5;
}

.reading-fill-analysis-option-text {
  color: #1f3d68 !important;
  font: 12px/1.65 Georgia, "Times New Roman", serif;
}

.reading-fill-distractors {
  display: grid;
  gap: 5px;
  margin-top: 6px;
}

.reading-fill-distractors > div {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 5px;
}

.reading-fill-distractors strong {
  color: #9a5d00;
  font-size: 11px;
}

.reading-fill-distractors p {
  margin: 0;
  color: #7d5a22;
  font-size: 10.5px;
}

.writing-section-tabs {
  display: flex;
  gap: 7px;
  overflow-x: auto;
  padding-bottom: 3px;
}

.writing-section-tab {
  flex: 1 0 180px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 10px;
  border: 1px solid #dce4f1;
  border-radius: 10px;
  color: #536985;
  background: #fbfcff;
  text-align: left;
}

.writing-section-tab strong {
  font-size: 11px;
}

.writing-section-tab span {
  color: #7a8799;
  font-size: 9px;
  font-weight: 800;
}

.writing-section-tab.active {
  border-color: #9eb9ee;
  color: #2451c7;
  background: #f1f6ff;
  box-shadow: 0 5px 14px rgba(49, 94, 251, 0.08);
}

.writing-instruction {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 11px 12px;
  border: 1px solid #cddaf1;
  border-radius: 11px;
  color: #4d6384;
  background: #f2f6ff;
  font-size: 11px;
  line-height: 1.65;
}

.writing-instruction strong {
  flex: 0 0 auto;
  color: #315b9c;
}

.writing-passage {
  padding: 15px;
  border: 1px solid #dbe4f2;
  border-radius: 13px;
  background: #fbfcff;
}

.writing-passage-paragraph {
  margin: 0 0 12px;
  color: #24364f;
  font: 16px/1.85 Georgia, "Times New Roman", serif;
  text-indent: 2em;
}

.writing-passage-paragraph:last-child {
  margin-bottom: 0;
}

.writing-blank-token {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 1px 5px;
  border-radius: 6px;
  color: #244fc8;
  background: #edf3ff;
  font-weight: 900;
}

.writing-blank-token.revealed {
  color: #25694e;
  background: #effaf5;
}

.writing-blank-token strong {
  color: #1f674f;
}

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

.writing-item {
  padding: 13px;
  border: 1px solid #dce4f1;
  border-radius: 12px;
  background: #fff;
}

.writing-item > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: #516987;
  font-size: 10px;
}

.writing-item > header strong {
  color: #315b9c;
  font-size: 12px;
}

.writing-item-chinese {
  margin: 8px 0 0;
  color: #596b84;
  font-size: 11px;
}

.writing-item-sentence {
  margin: 8px 0 0;
  color: #24364f;
  font: 14px/1.75 Georgia, "Times New Roman", serif;
}

.writing-sentence-blank {
  display: inline-block;
  min-width: 52px;
  padding: 1px 5px;
  border-bottom: 2px solid #9eb9ee;
  color: #244fc8;
  text-align: center;
  font-weight: 900;
}

.writing-sentence-blank.revealed {
  border-color: #9ed5bd;
  color: #1f674f;
  background: #effaf5;
}

.writing-answer-box {
  display: grid;
  gap: 5px;
  margin-top: 10px;
  padding: 10px;
  border: 1px solid #cfe2d8;
  border-radius: 10px;
  color: #38584c;
  background: #f3fbf7;
}

.writing-answer-box p {
  margin: 0;
  font-size: 11px;
  line-height: 1.65;
}

.writing-answer-box strong {
  color: #1f674f;
}

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

.writing-review-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid #dce4f1;
  border-radius: 12px;
  background: #fff;
}

.writing-review-card > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 10px;
  border-bottom: 1px solid #e4ebf5;
  background: #f7f9fd;
}

.writing-review-card h4 {
  margin: 0;
  color: #315b9c;
  font-size: 12px;
}

.writing-review-card > header span {
  color: #7a8799;
  font-size: 9px;
  font-weight: 800;
}

.writing-review-card ul {
  margin: 0;
  padding: 9px 12px 10px 27px;
  color: #4c607c;
  font-size: 10.5px;
  line-height: 1.65;
}

.writing-pattern-list {
  display: grid;
  gap: 0;
  padding: 0 10px;
}

.writing-pattern-list > div {
  padding: 9px 0;
  border-bottom: 1px solid #edf1f7;
}

.writing-pattern-list > div:last-child {
  border-bottom: 0;
}

.writing-pattern-list strong {
  color: #315b9c;
  font-size: 11px;
}

.writing-pattern-list p {
  margin: 3px 0 0;
  color: #536985;
  font-size: 10.5px;
}

.writing-pattern-list small {
  display: block;
  margin-top: 3px;
  color: #7a8799;
  font-size: 10px;
  line-height: 1.5;
}

.writing-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.writing-summary-grid > section {
  padding: 12px;
  border: 1px solid #dce4f1;
  border-radius: 12px;
  background: #fbfcff;
}

.writing-summary-grid h4 {
  margin: 0;
  color: #315b9c;
  font-size: 12px;
}

.writing-summary-grid ul {
  margin: 7px 0 0;
  padding-left: 18px;
  color: #536985;
  font-size: 10.5px;
  line-height: 1.65;
}

.listening-embed-meta {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.listening-embed-meta span {
  padding: 4px 7px;
  border-radius: 999px;
  color: #49658e;
  background: #eef3ff;
  font-size: 10px;
  font-weight: 800;
}

.listening-embed-summary {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 10px 12px;
  border: 1px solid #dce4f1;
  border-radius: 11px;
  color: #71829b;
  background: #fbfcff;
  font-size: 10px;
}

.listening-embed-summary strong {
  color: #315b9c;
  font-size: 16px;
}

.listening-embed-frame {
  width: 100%;
  height: 1250px;
  min-height: 900px;
  border: 0;
  border-radius: 13px;
  background: #f4f7fb;
  box-shadow: inset 0 0 0 1px #dce4f1;
}

.lesson-audio-missing {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 12px;
  border: 1px solid #ead69a;
  border-radius: 12px;
  color: #7e6418;
  background: #fffaf0;
  font-size: 11px;
}

.lesson-audio-missing.optional,
.lesson-audio-missing.none {
  border-color: #cddaf1;
  color: #4d6384;
  background: #f2f6ff;
}

.lesson-audio-missing strong {
  display: block;
  margin-bottom: 2px;
}

.knowledge-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 22px;
  background: rgba(17, 28, 47, 0.48);
  backdrop-filter: blur(8px);
}

.knowledge-modal-panel {
  width: min(1320px, 100%);
  max-height: calc(100vh - 44px);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid #d5e0ef;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 28px 80px rgba(14, 28, 52, 0.28);
}

.knowledge-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}

.knowledge-modal-head h2 {
  margin: 0;
  font-size: 21px;
}

.knowledge-modal-head .panel-note {
  margin-top: 4px;
}

.knowledge-modal-list {
  min-height: 0;
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-content: start;
  gap: 11px;
  padding: 16px;
}

.knowledge-modal-list .lesson-knowledge-item {
  padding: 13px;
  border-radius: 13px;
}

.knowledge-modal-list .lesson-knowledge-title {
  font-size: 19px;
}

.knowledge-modal-list .lesson-knowledge-title em {
  font-size: 14px;
}

.knowledge-modal-list .lesson-knowledge-meaning {
  font-size: 14px;
}

.knowledge-modal-list .lesson-knowledge-extension {
  font-size: 12px;
}

.content-modal-panel {
  width: min(1180px, 100%);
  height: calc(100vh - 44px);
}

.content-modal-body {
  min-height: 0;
  overflow-y: auto;
  padding: 18px;
  background: #f7f9fd;
}

.content-modal-body .lesson-module-content {
  width: min(980px, 100%);
  margin: 0 auto;
}

.content-modal-body .grammar-passage-paragraph,
.content-modal-body .cloze-passage-paragraph,
.content-modal-body .reading-passage-paragraph,
.content-modal-body .reading-fill-passage-paragraph,
.content-modal-body .writing-passage-paragraph {
  font-size: 18px;
  line-height: 1.95;
}

body.knowledge-modal-open {
  overflow: hidden;
}

@media (max-width: 1180px) {
  .lesson-card-layout {
    grid-template-columns: 240px minmax(0, 1fr);
  }

  .lesson-side-panel {
    grid-column: 1 / -1;
    position: static;
  }

  .lesson-knowledge-list {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    max-height: 420px;
  }
}

@media (max-width: 760px) {
  .knowledge-modal {
    padding: 10px;
  }

  .knowledge-modal-panel {
    max-height: calc(100vh - 20px);
  }

  .content-modal-panel {
    height: calc(100vh - 20px);
  }

  .content-modal-body {
    padding: 10px;
  }

  .grammar-analysis-panel {
    height: calc(100vh - 20px);
  }

  .grammar-analysis-head {
    align-items: flex-start;
  }

  .grammar-analysis-head-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .grammar-analysis-body {
    padding: 10px;
  }

  .grammar-analysis-layout {
    grid-template-columns: 1fr;
  }

  .grammar-analysis-passage {
    max-height: none;
  }

  .cloze-analysis-options {
    grid-template-columns: 1fr;
  }

  .reading-option-list,
  .reading-review-grid,
  .reading-fill-option-list,
  .reading-fill-review-grid,
  .writing-review-grid,
  .writing-summary-grid {
    grid-template-columns: 1fr;
  }

  .listening-embed-frame {
    height: 1500px;
    min-height: 1200px;
  }

  .knowledge-modal-list {
    grid-template-columns: 1fr;
    padding: 10px;
  }

  .cloze-option-list,
  .cloze-review-grid {
    grid-template-columns: 1fr;
  }

  .lesson-card-hero {
    display: block;
  }

  .lesson-card-scorecard {
    margin-top: 15px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .lesson-card-layout {
    grid-template-columns: 1fr;
  }

  .lesson-module-panel,
  .lesson-side-panel {
    position: static;
  }

  .lesson-module-list {
    max-height: 300px;
  }

  .lesson-content-head,
  .lesson-content-body {
    padding-right: 15px;
    padding-left: 15px;
  }
}