body {
  background: #f5f7fd;
}

.quarto-container,
main.content {
  max-width: none;
}

.course-index {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2.2rem 1rem 4rem;
  color: #25313a;
}

.course-profile {
  display: flex;
  gap: 1.35rem;
  align-items: center;
  padding: 0 0 1.8rem;
  border-bottom: 1px solid rgba(43, 67, 91, 0.17);
}

.course-profile-photo {
  width: 132px;
  height: 132px;
  flex: 0 0 132px;
  border: 3px solid #ffffff;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 18%;
  box-shadow: 0 8px 24px rgba(43, 67, 91, 0.18);
}

.course-site-logo {
  display: block;
  width: 76px;
  height: 76px;
  margin: 0 0 1rem;
  object-fit: contain;
}

.course-profile-copy h1,
.course-intro h1 {
  margin: 0.1rem 0 0.45rem;
  color: #25313a;
  font-size: clamp(1.7rem, 4vw, 2.55rem);
  line-height: 1.08;
}

.course-profile-copy p,
.course-intro p,
.course-row-body p {
  max-width: 780px;
  margin: 0;
  color: #53616f;
  line-height: 1.55;
}

.course-kicker {
  margin: 0;
  color: #1f6f8b !important;
  font-size: 0.78rem;
  font-weight: 750;
  text-transform: uppercase;
}

.course-profile-links,
.course-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.48rem;
  margin-top: 0.85rem;
}

.course-profile-links a,
.course-links a,
.course-back-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.15rem;
  padding: 0.38rem 0.68rem;
  border: 1px solid #bdcad4;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.86);
  color: #27475d;
  font-size: 0.9rem;
  font-weight: 680;
  text-decoration: none;
}

.course-profile-links a:hover,
.course-links a:hover,
.course-back-link:hover {
  border-color: #1f6f8b;
  background: #ffffff;
  color: #175873;
  text-decoration: none;
}

.course-intro {
  padding: 2rem 0 1rem;
}

.course-intro h2 {
  margin: 0 0 0.5rem;
  color: #25313a;
}

.course-accordion {
  display: grid;
  gap: 0.72rem;
  margin-top: 0.55rem;
}

.course-row {
  border: 1px solid rgba(43, 67, 91, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 10px 26px rgba(43, 67, 91, 0.06);
  overflow: hidden;
}

.course-row summary {
  display: flex;
  gap: 0.85rem;
  align-items: center;
  min-height: 4.3rem;
  padding: 0.82rem 3rem 0.82rem 1rem;
  color: #25313a;
  cursor: pointer;
  font-size: 1.12rem;
  font-weight: 740;
  list-style: none;
  position: relative;
}

.course-row summary::-webkit-details-marker {
  display: none;
}

.course-row summary::after {
  content: "+";
  position: absolute;
  right: 1rem;
  color: #1f6f8b;
  font-size: 1.55rem;
  font-weight: 450;
  line-height: 1;
}

.course-row[open] summary::after {
  content: "−";
}

.course-row-kind {
  min-width: 6.2rem;
  color: #1f6f8b;
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
  text-transform: uppercase;
}

.course-row-body {
  padding: 0.9rem 1rem 1rem 8.05rem;
  border-top: 1px solid rgba(43, 67, 91, 0.1);
}

.course-subpage {
  max-width: 960px;
}

.course-subpage .course-intro {
  padding-top: 1.2rem;
}

.course-author-note {
  margin: 1.15rem 0 0;
  padding: 0.85rem 1rem;
  border-left: 4px solid #1f6f8b;
  background: rgba(255, 255, 255, 0.72);
  color: #53616f;
  line-height: 1.5;
}

.course-author-note a {
  color: #175873;
  font-weight: 700;
}

.course-section-title {
  margin: 1.8rem 0 0.55rem;
  color: #25313a;
  font-size: 1.25rem;
}

.course-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 0.72rem;
  margin-top: 0.7rem;
}

.course-card {
  min-height: 9rem;
  padding: 0.9rem;
  border: 1px solid rgba(43, 67, 91, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 8px 20px rgba(43, 67, 91, 0.05);
}

.course-card h3 {
  margin: 0.2rem 0 0.45rem;
  color: #25313a;
  font-size: 1.02rem;
  line-height: 1.25;
}

.course-card p {
  margin: 0;
  color: #53616f;
  line-height: 1.45;
}

.course-card-status {
  display: inline-flex;
  align-items: center;
  min-height: 1.55rem;
  padding: 0.12rem 0.46rem;
  border: 1px solid rgba(31, 111, 139, 0.24);
  border-radius: 999px;
  color: #1f6f8b;
  font-size: 0.72rem;
  font-weight: 760;
  text-transform: uppercase;
}

.course-card.is-planned {
  background: rgba(255, 255, 255, 0.64);
}

.course-material-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.72rem;
  margin-top: 0.7rem;
}

.course-material {
  padding: 0.9rem;
  border: 1px solid rgba(43, 67, 91, 0.13);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
}

.course-material h3 {
  margin: 0 0 0.45rem;
  color: #25313a;
  font-size: 1rem;
}

.course-material p {
  margin: 0 0 0.65rem;
  color: #53616f;
}

@media (max-width: 620px) {
  .course-index {
    padding-top: 1.25rem;
  }

  .course-profile {
    align-items: flex-start;
  }

  .course-profile-photo {
    width: 88px;
    height: 88px;
    flex-basis: 88px;
  }

  .course-row summary {
    display: grid;
    gap: 0.2rem;
    font-size: 1rem;
  }

  .course-row-kind {
    min-width: 0;
  }

  .course-row-body {
    padding-left: 1rem;
  }
}


.course-intro-primary {
  padding-top: 0;
  padding-bottom: 1.8rem;
  border-bottom: 1px solid rgba(43, 67, 91, 0.17);
}

.lecture-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.48rem;
  margin-top: 0.85rem;
}

.lecture-links a,
.lecture-link-pending {
  display: inline-flex;
  align-items: center;
  min-height: 2.15rem;
  padding: 0.38rem 0.68rem;
  border: 1px solid #bdcad4;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.82);
  color: #27475d;
  font-size: 0.9rem;
  font-weight: 680;
  text-decoration: none;
}

.lecture-links a:hover {
  border-color: #1f6f8b;
  background: #ffffff;
  color: #175873;
  text-decoration: none;
}

.lecture-accordion {
  display: grid;
  gap: 0.72rem;
  margin-top: 0.55rem;
}

.lecture-row {
  border: 1px solid rgba(43, 67, 91, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 10px 26px rgba(43, 67, 91, 0.06);
  overflow: hidden;
}

.lecture-row summary {
  display: flex;
  gap: 0.85rem;
  align-items: center;
  min-height: 4.3rem;
  padding: 0.82rem 3rem 0.82rem 1rem;
  color: #25313a;
  cursor: pointer;
  font-size: 1.12rem;
  font-weight: 740;
  list-style: none;
  position: relative;
}

.lecture-row summary::-webkit-details-marker {
  display: none;
}

.lecture-row summary::after {
  content: "+";
  position: absolute;
  right: 1rem;
  color: #1f6f8b;
  font-size: 1.55rem;
  font-weight: 450;
  line-height: 1;
}

.lecture-row[open] summary::after {
  content: "−";
}

.lecture-index {
  color: #1f6f8b;
  font-size: 0.83rem;
  font-variant-numeric: tabular-nums;
}

.lecture-row-body {
  padding: 0 1rem 1rem 2.95rem;
  border-top: 1px solid rgba(43, 67, 91, 0.10);
}

.lecture-row-body p {
  margin: 0.82rem 0 0;
  color: #53616f;
  line-height: 1.48;
}

.lecture-link-pending {
  border-style: dashed;
  background: rgba(238, 244, 249, 0.7);
  color: #7b8995;
  font-weight: 560;
}

.reference-row-body {
  padding-top: 0.9rem;
}

.reference-source {
  max-width: 52rem;
  margin: 0 0 0.95rem !important;
  padding: 0.74rem 0.86rem;
  border-left: 4px solid #1f6f78;
  border-radius: 0 7px 7px 0;
  background: rgba(255, 255, 255, 0.74);
  color: #53616f;
  line-height: 1.5;
}

.reference-source a {
  color: #175873;
  font-weight: 700;
}

.reference-group {
  margin-top: 1.05rem;
}

.reference-group h3 {
  margin: 0 0 0.55rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid rgba(43, 67, 91, 0.12);
  color: #25313a;
  font-size: 1rem;
}

.reference-list {
  display: grid;
  gap: 0.52rem;
}

.reference-item {
  padding: 0.68rem 0.74rem;
  border: 1px solid rgba(43, 67, 91, 0.13);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.78);
}

.reference-item p {
  max-width: none;
  margin: 0 !important;
  color: #53616f;
  line-height: 1.42;
}

.reference-title {
  color: #25313a;
  font-weight: 680;
}

.reference-details {
  color: #63717d;
}

.reference-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
  margin-top: 0.5rem;
}


.reference-links p {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
  margin: 0 !important;
}

.reference-links a {
  display: inline-flex;
  align-items: center;
  min-height: 1.85rem;
  padding: 0.28rem 0.52rem;
  border: 1px solid #bdcad4;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.9);
  color: #27475d;
  font-size: 0.84rem;
  font-weight: 680;
  text-decoration: none;
}

.reference-links a:hover {
  border-color: #1f6f78;
  color: #175873;
  text-decoration: none;
}