/* Course navigation and new chapter layouts. The original reading style is shared. */
.course-nav {
  max-width: 1110px;
  margin: 0 auto;
  padding: 22px 32px;
  display: flex;
  gap: 12px 24px;
  flex-wrap: wrap;
  font-size: 12px;
  border-bottom: 1px solid var(--line);
}
.course-nav a[aria-current] {
  font-weight: 700;
}
.course-nav a:first-child {
  margin-right: auto;
}
.topbar .home-link {
  font-size: 12px;
  color: #555e6c;
}
.section .evidence {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 23px;
  font-size: 11px;
}
.flag {
  display: inline-block;
  font-size: 10px;
  line-height: 1.7;
  font-weight: 650;
  padding: 4px 9px;
  border-radius: 7px;
}
.flag.blue {
  color: #1758a1;
  background: #ecf3ff;
}
.flag.red {
  color: #b22e40;
  background: #fff0f2;
}
.flag.supplement {
  color: #626773;
  background: #eff0f4;
}
.flag:is(.bold, .underline, .bold-underline) {
  color: #26282d;
  background: #f1f1ee;
  box-shadow: inset 0 0 0 1px #d6d6d0;
}
.flag:is(.bold, .bold-underline) {
  font-weight: 800;
}
.flag:is(.underline, .bold-underline) {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.chapter-hero {
  padding: 64px 0 48px;
}
.chapter-hero h1 {
  font-size: clamp(38px, 4.4vw, 64px);
  margin: 20px 0 24px;
  line-height: 1.2;
}
.hero-badges {
  display: flex;
  gap: 9px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.chapter-hero .hero-links {
  justify-content: flex-start;
}
.concept-map {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 30px 0 0;
}
.recall-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin: 22px 0;
  font-size: 12px;
}
.source-note {
  font-size: 12px;
  color: #687183;
  margin-top: 16px;
}
.reading-note {
  font-size: 12px;
  color: #707784;
  margin-top: 14px;
}
.dimension-demo .segmented {
  margin: 18px 0;
}
.dimension-demo [role='status'] {
  min-height: 122px;
}
.dimension-demo h4 {
  font-size: 19px;
}
.dimension-demo p {
  margin-top: 10px;
}
.study-steps {
  counter-reset: study;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}
.study-steps article {
  padding: 26px;
  border: 1px solid #e0e4ec;
  border-radius: 20px;
}
.study-steps h3 {
  font-size: 19px;
  margin: 13px 0;
}
.study-steps article:before {
  counter-increment: study;
  content: '0' counter(study);
  font-size: 12px;
  color: #0066cc;
  font-weight: 700;
}
.study-steps p {
  font-size: 13px;
  color: #646c79;
}
.axis-list {
  display: grid;
  gap: 12px;
  padding: 25px;
  border-radius: 20px;
  background: #f4f6fa;
}
.axis-row {
  display: grid;
  grid-template-columns: 110px 1fr 110px;
  gap: 15px;
  align-items: center;
  font-size: 12px;
}
.axis-line {
  height: 2px;
  position: relative;
  background: var(--blue);
}
.axis-line:after {
  content: '';
  position: absolute;
  right: 0;
  top: -4px;
  width: 9px;
  height: 9px;
  border-top: 2px solid var(--blue);
  border-right: 2px solid var(--blue);
  transform: rotate(45deg);
}
.axis-list p {
  font-size: 11px;
  color: #737e91;
}
.recall-list summary {
  line-height: 1.7;
}
.recall-list .answer {
  line-height: 1.9;
}
.recall-list .answer b {
  color: #285c98;
}
.chapter-end {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 35px 0;
  font-size: 13px;
}
.evidence-table td:first-child {
  min-width: 62px;
}
.evidence-table td {
  font-size: 12px;
}
.evidence-table .flag {
  white-space: nowrap;
}
.summary-page .section {
  padding: 46px 0;
}
.summary-page .chapter-hero h1 {
  font-size: clamp(37px, 4.3vw, 58px);
}
.summary-page .section h2 {
  font-size: 30px;
}
.summary-page .section p {
  font-size: 14px;
}
.summary-page .card h3 {
  font-size: 19px;
}
.summary-page .card {
  padding: 23px;
}
.summary-page .definition-quote {
  border: 1px solid #f1dfe3;
  background: #fff6f7;
  border-radius: 20px;
  padding: 27px;
  font-size: 23px;
  line-height: 1.8;
  letter-spacing: -0.6px;
  color: #923249;
}
.section :is(.grid, .concept-map, .study-steps) > * {
  min-width: 0;
}
/* Entry page */
.home-page {
  background: #fafbfe;
}
.home-header {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  padding: 0 42px;
  margin: auto;
  border-bottom: 1px solid #e5e8ef;
}
.home-header nav {
  display: flex;
  gap: 26px;
  font-size: 12px;
}
.home-header nav a {
  color: #566171;
}
.home-main {
  margin: 0;
  padding: 0 42px;
  max-width: 1200px;
  margin: auto;
}
.home-hero {
  padding: 80px 0 62px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 50px;
  align-items: center;
}
.home-hero h1 {
  font-size: clamp(42px, 4.6vw, 68px);
  line-height: 1.16;
  margin: 23px 0;
  letter-spacing: -0.06em;
}
.home-hero .lede {
  font-size: 16px;
  max-width: 530px;
  color: #687181;
}
.home-hero .hero-links {
  justify-content: flex-start;
  margin-top: 28px;
}
.home-visual {
  position: relative;
  display: grid;
  gap: 16px;
  padding: 32px 10px;
  background: radial-gradient(ellipse, #e8ebfb, transparent 70%);
}
.visual-card {
  padding: 23px 28px;
  max-width: 330px;
  background: #ffffffdf;
  border: 1px solid #fff;
  box-shadow: 0 18px 45px #5c6e9910;
  border-radius: 22px;
}
.visual-card:nth-child(2) {
  margin-left: 45px;
  transform: rotate(3deg);
}
.visual-card:first-child {
  transform: rotate(-3deg);
}
.visual-card small {
  font-size: 10px;
  letter-spacing: 1.8px;
  color: #7086a6;
}
.visual-card b {
  font-size: 22px;
  display: block;
  margin: 8px 0;
}
.visual-card p {
  font-size: 12px;
  color: #748093;
}
.visual-card mark {
  background: #e9efff;
  color: #245dac;
  padding: 2px 5px;
  border-radius: 4px;
}
.visual-card:nth-child(2) mark {
  background: #fff0f3;
  color: #b64054;
}
.home-stats {
  display: flex;
  gap: 42px;
  padding: 25px 0;
  border-top: 1px solid #e1e5ed;
  border-bottom: 1px solid #e1e5ed;
}
.home-stats div {
  display: flex;
  gap: 11px;
  align-items: baseline;
}
.home-stats b {
  font-size: 27px;
  color: #39465c;
}
.home-stats span {
  font-size: 12px;
  color: #737d8f;
}
.home-section {
  padding: 60px 0;
}
.home-section + .home-section {
  border-top: 1px solid #e1e5ed;
}
.home-section h2 {
  font-size: 31px;
  margin: 10px 0 13px;
}
.home-section > .muted {
  font-size: 14px;
}
.chapter-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 30px;
}
.chapter-card {
  border: 1px solid #e0e5ef;
  border-radius: 25px;
  background: white;
  overflow: hidden;
}
.chapter-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 23px 27px 0;
  font-size: 11px;
  color: #748096;
}
.chapter-card-art {
  height: 144px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: radial-gradient(ellipse, #edf4fe, transparent 70%);
  margin: 12px 20px;
}
.chapter-card-art span {
  padding: 13px 16px;
  border: 1px solid #dae6f7;
  border-radius: 15px;
  color: #456995;
  background: #f8fbff;
  font-size: 14px;
}
.chapter-card:nth-child(2) .chapter-card-art {
  background: radial-gradient(ellipse, #eeeafb, transparent 70%);
}
.chapter-card:nth-child(2) .chapter-card-art span {
  background: #f8f6fd;
  border-color: #e4dcf2;
  color: #77608d;
}
.chapter-card-content {
  padding: 0 27px 27px;
}
.chapter-card-content h3 {
  font-size: 25px;
  margin: 6px 0 15px;
}
.chapter-card-content > p {
  font-size: 13px;
  color: #6b7484;
  min-height: 70px;
}
.chapter-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 23px;
}
.chapter-actions a {
  text-align: center;
  padding: 12px 8px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 650;
  background: #0066cc;
  color: white;
}
.chapter-actions a:nth-child(2) {
  background: #fff0f2;
  color: #a83d50;
}
.chapter-actions a:hover {
  text-decoration: none;
  filter: brightness(0.96);
}
.card-source {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 11px;
  margin-top: 20px;
  color: #7a8392;
}
.study-path {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 30px;
}
.study-path article {
  border-top: 2px solid #e1e7f3;
  padding-top: 22px;
}
.study-path article > b {
  font-size: 11px;
  color: #667eaa;
}
.study-path h3 {
  font-size: 19px;
  margin: 13px 0;
}
.study-path p {
  font-size: 13px;
  color: #6b7484;
}
.home-footer {
  padding: 30px 0;
  display: flex;
  justify-content: space-between;
  border-top: 1px solid #e1e5ed;
  font-size: 11px;
  color: #808a9b;
}
.material-list {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 25px;
}
.material-list a {
  padding: 14px 20px;
  background: #eef2f9;
  border-radius: 12px;
  font-size: 13px;
}
@media (max-width: 820px) {
  .home-hero {
    gap: 24px;
    padding: 54px 0 40px;
  }
  .home-hero h1 {
    font-size: 46px;
  }
  .home-main {
    padding: 0 28px;
  }
  .home-header {
    padding: 0 28px;
  }
  .home-stats {
    gap: 24px;
  }
  .home-stats div {
    flex-direction: column;
    gap: 0;
  }
  .chapter-card-content h3 {
    font-size: 22px;
  }
  .chapter-card-art {
    gap: 8px;
  }
  .chapter-card-art span {
    padding: 10px;
    font-size: 12px;
  }
  .course-nav {
    padding: 18px 24px;
  }
}
@media (max-width: 600px) {
  .home-hero {
    grid-template-columns: 1fr;
  }
  .home-visual {
    display: none;
  }
  .home-hero h1 {
    font-size: 44px;
  }
  .home-main {
    padding: 0 22px;
  }
  .home-header {
    padding: 0 22px;
    height: 68px;
  }
  .home-header nav {
    gap: 16px;
    font-size: 11px;
  }
  .home-stats {
    gap: 20px;
    justify-content: space-between;
  }
  .home-stats b {
    font-size: 23px;
  }
  .home-stats span {
    font-size: 10px;
  }
  .chapter-cards,
  .study-path,
  .study-steps,
  .concept-map {
    grid-template-columns: 1fr;
  }
  .chapter-card-content > p {
    min-height: 0;
  }
  .home-section {
    padding: 43px 0;
  }
  .home-section h2 {
    font-size: 28px;
  }
  .home-footer {
    flex-direction: column;
    gap: 8px;
  }
  .course-nav {
    padding: 17px 22px;
    gap: 10px 16px;
    font-size: 11px;
  }
  .course-nav a:first-child {
    width: 100%;
    margin-right: 0;
  }
  .chapter-hero {
    padding: 40px 0 30px;
  }
  .axis-row {
    grid-template-columns: 80px 1fr 85px;
    gap: 8px;
    font-size: 10px;
  }
  .axis-list {
    padding: 20px 14px;
  }
  .section-head {
    flex-wrap: wrap;
  }
  .source {
    white-space: normal;
  }
  .summary-page .section h2 {
    font-size: 27px;
  }
  .topbar .home-link {
    font-size: 11px;
  }
  .summary-page .definition-quote {
    font-size: 20px;
    padding: 22px;
  }
  .chapter-end {
    font-size: 12px;
  }
}
.definition-quote {
  border: 1px solid #f1dfe3;
  background: #fff6f7;
  border-radius: 20px;
  padding: 27px;
  font-size: 23px;
  line-height: 1.8;
  color: #923249;
}
@media screen and (max-width: 600px) {
  .study-table table,
  .study-table caption,
  .study-table tbody,
  .study-table tr,
  .study-table td {
    display: block;
    width: 100%;
  }
  .study-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
  .study-table tr + tr {
    border-top: 2px solid var(--line-strong);
  }
  .study-table td {
    padding: 12px 16px;
    border: 0;
    font-size: 15px;
    min-width: 0;
  }
  .study-table td:first-child {
    background: var(--surface-2);
    font-size: 15px;
  }
  .study-table td + td {
    border-top: 1px solid var(--line);
  }
  .study-table td:before {
    content: attr(data-label);
    display: block;
    font-size: 13px;
    color: var(--muted);
    font-weight: 650;
    margin-bottom: 5px;
  }
  .study-table caption {
    padding: 12px 16px;
    font-size: 15px;
  }
  .definition-quote {
    font-size: 20px;
    padding: 22px;
  }
}
@media print {
  .course-nav,
  .chapter-end,
  .recall-actions,
  .dimension-demo,
  .home-header {
    display: none !important;
  }
  .chapter-hero {
    padding-top: 10px;
  }
  .concept-map {
    grid-template-columns: repeat(3, 1fr);
  }
  .study-steps {
    grid-template-columns: 1fr 1fr;
  }
  .evidence a {
    color: #444;
  }
  .home-main {
    padding: 0;
  }
  .home-hero {
    padding: 20px 0;
  }
  .home-section {
    padding: 25px 0;
  }
}