:root {
  --md-primary-fg-color: #2f4655;
  --md-primary-fg-color--light: #4d6878;
  --md-primary-fg-color--dark: #22343f;
  --md-accent-fg-color: #966a32;
  --md-accent-fg-color--transparent: rgba(150, 106, 50, 0.12);
  --md-default-bg-color: #fbfbf8;
  --md-default-fg-color: #263238;
  --md-typeset-a-color: #47697c;
  --course-paper: #f4f3ee;
  --course-rule: #d8d8d0;
  --course-muted: #69757b;
  --course-accent: #966a32;
  --course-serif: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", STSong, SimSun, serif;
  --course-sans: "Noto Sans CJK SC", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

body,
input {
  font-family: var(--course-sans);
}

body {
  background: var(--md-default-bg-color);
}

.md-header {
  background: #2f4655;
  box-shadow: none;
}

.md-header__title {
  font-family: var(--course-serif);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.md-tabs {
  background: #2f4655;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.md-tabs__link {
  margin-top: 0.65rem;
  padding-bottom: 0.65rem;
  font-size: 0.72rem;
  opacity: 0.72;
}

.md-tabs__link--active,
.md-tabs__link:hover {
  color: #fff;
  opacity: 1;
}

.md-main__inner {
  margin-top: 1.8rem;
}

.md-content__inner {
  padding-bottom: 3rem;
}

.md-content__inner::before {
  display: none;
}

.md-typeset {
  color: #303a3f;
  font-size: 0.82rem;
  line-height: 1.85;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  color: #23343e;
  font-family: var(--course-serif);
  font-weight: 600;
  letter-spacing: 0.025em;
}

.md-typeset h1 {
  margin: 0 0 1.5rem;
  font-size: 2rem;
  line-height: 1.3;
}

.md-typeset h2 {
  margin-top: 2.8rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--course-rule);
  font-size: 1.25rem;
}

.md-typeset h3 {
  font-size: 1rem;
}

.md-typeset a {
  text-decoration-color: rgba(71, 105, 124, 0.35);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
}

.md-typeset a:hover {
  color: var(--course-accent);
  text-decoration-color: currentColor;
}

.md-typeset ol li::marker {
  color: var(--course-accent);
  font-variant-numeric: tabular-nums;
}

.md-typeset .md-button {
  margin-top: 0.7rem;
  margin-right: 0.55rem;
  padding: 0.58em 1.15em;
  border-color: #536b78;
  border-radius: 2px;
  color: #304955;
  font-size: 0.73rem;
  font-weight: 600;
  letter-spacing: 0.025em;
  text-decoration: none;
}

.md-typeset .md-button:hover {
  border-color: #2f4655;
  background: #2f4655;
  color: #fff;
}

.md-typeset .md-button--primary {
  border-color: #2f4655;
  background: #2f4655;
  color: #fff;
}

.md-typeset .md-button--primary:hover {
  border-color: #966a32;
  background: #966a32;
}

.course-hero {
  position: relative;
  margin: -0.5rem 0 2.5rem;
  padding: 2.7rem 3rem 2.8rem;
  overflow: hidden;
  border: 1px solid #deded7;
  background: var(--course-paper);
}

.course-hero::after {
  position: absolute;
  top: 0;
  right: 0;
  width: 4px;
  height: 100%;
  background: var(--course-accent);
  content: "";
}

.course-hero .course-kicker {
  margin: 0 0 0.9rem;
  color: var(--course-accent);
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.course-hero h1 {
  margin: 0;
  color: #22343f;
  font-size: clamp(2.3rem, 6vw, 3.6rem);
  letter-spacing: 0.08em;
}

.course-hero .course-title-en {
  margin: 0.25rem 0 1.35rem;
  color: #53646c;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.05rem;
  letter-spacing: 0.09em;
}

.course-hero .course-lead {
  max-width: 37rem;
  margin: 0;
  color: #48565c;
  font-size: 0.87rem;
  line-height: 1.95;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.25rem;
  margin-bottom: 2.5rem;
}

.course-panel h2 {
  margin-top: 0;
}

.course-facts {
  margin: 0;
}

.course-facts > div {
  display: grid;
  grid-template-columns: 5.2rem 1fr;
  gap: 1rem;
  padding: 0.62rem 0;
  border-bottom: 1px solid #e3e3dc;
}

.course-facts > div:last-child {
  border-bottom: 0;
}

.course-facts dt {
  color: var(--course-muted);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}

.course-facts dd {
  margin: 0;
  color: #2c393f;
  font-weight: 500;
}

.course-schedule {
  margin-top: 1.35rem;
  padding: 1rem 1rem 0.7rem;
  border-top: 1px solid var(--course-rule);
  background: var(--course-paper);
}

.course-schedule h3 {
  margin: 0 0 0.35rem;
  color: #2c3d45;
  font-size: 0.88rem;
}

.course-schedule table {
  margin: 0;
  font-size: 0.72rem;
}

.course-schedule th,
.course-schedule td {
  padding: 0.42rem 0.55rem;
}

.course-schedule th {
  color: var(--course-muted);
  font-size: 0.67rem;
}

.resource-list {
  border-top: 1px solid #e3e3dc;
}

.resource-group-label {
  margin: 1.35rem 0 0.45rem;
  color: var(--course-accent);
  font-family: var(--course-sans);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: none;
}

.course-schedule-title {
  margin: 0 0 0.35rem;
  color: #2c3d45;
  font-family: var(--course-serif);
  font-size: 0.88rem;
  font-weight: 600;
}

.resource-group {
  margin-top: 1.35rem;
  border: 0 !important;
  background: transparent !important;
}

.resource-group summary {
  padding: 0.75rem 0;
  padding-left: 0 !important;
  padding-right: 0 !important;
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  color: var(--course-accent);
  cursor: pointer;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  list-style-position: inside;
  list-style: none;
}

.resource-group summary::-webkit-details-marker {
  display: none;
}

.resource-group summary::marker {
  display: none !important;
  content: "";
}

.resource-group summary::before {
  display: none !important;
}

.resource-group summary::after {
  display: none !important;
}

.resource-group summary:focus,
.resource-group summary.focus-visible {
  outline: none;
}

.resource-group[open] summary {
  border-bottom: 1px solid #e3e3dc;
}

.resource-group .resource-list {
  border-top: 0;
}

.resource-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.58rem 0;
  border-bottom: 1px solid #e3e3dc;
  color: inherit;
  text-decoration: none;
}

.resource-list a:hover strong,
.resource-list a:hover .resource-format {
  color: var(--course-accent);
}

.resource-list strong,
.resource-list small {
  display: block;
}

.resource-list strong {
  color: #2c3d45;
  font-size: 0.77rem;
  font-weight: 600;
}

.resource-list small {
  margin-top: 0.05rem;
  color: var(--course-muted);
  font-size: 0.65rem;
}

.resource-format {
  flex: 0 0 auto;
  color: #5c6e76;
  font-size: 0.63rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.page-intro {
  max-width: 36rem;
  margin: -0.65rem 0 2rem;
  color: var(--course-muted);
  font-size: 0.82rem;
}

.archive-list {
  border-top: 1px solid var(--course-rule);
}

.archive-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.05rem 0.2rem;
  border-bottom: 1px solid var(--course-rule);
  color: inherit;
  text-decoration: none;
}

.archive-list a:hover {
  padding-right: 0.55rem;
  padding-left: 0.55rem;
  background: rgba(244, 243, 238, 0.72);
}

.archive-list strong,
.archive-list small {
  display: block;
}

.archive-list strong {
  color: #2b3b43;
  font-family: var(--course-serif);
  font-size: 0.9rem;
  font-weight: 600;
}

.archive-list small {
  margin-top: 0.12rem;
  color: var(--course-muted);
  font-size: 0.67rem;
}

.archive-action {
  flex: 0 0 auto;
  color: #56717f;
  font-size: 0.69rem;
  font-weight: 600;
}

.archive-list a:hover .archive-action {
  color: var(--course-accent);
}

.empty-state {
  max-width: 36rem;
  margin: 2.8rem 0;
  padding: 2rem 2.2rem;
  border-top: 2px solid #526b78;
  border-bottom: 1px solid var(--course-rule);
  background: var(--course-paper);
}

.empty-state h2 {
  margin: 0 0 0.7rem;
  padding: 0;
  border: 0;
  font-size: 1.08rem;
}

.empty-state p {
  margin: 0;
  color: var(--course-muted);
}

.empty-state .empty-state-link {
  display: inline-block;
  margin-top: 1.1rem;
  color: #405f6f;
  font-size: 0.72rem;
  font-weight: 600;
}

.md-nav__link--active,
.md-nav__link:focus,
.md-nav__link:hover {
  color: var(--course-accent);
}

.md-footer-meta {
  display: none;
}

@media screen and (min-width: 60em) {
  .md-sidebar--primary {
    display: none;
  }

  .md-content {
    margin-left: 0;
  }
}

@media screen and (min-width: 76.25em) {
  .md-grid {
    max-width: 68rem;
  }
}

@media screen and (max-width: 59.984375em) {
  .md-main__inner {
    margin-top: 1.2rem;
  }

  .course-hero {
    padding: 2.25rem 2rem 2.35rem;
  }
}

@media screen and (max-width: 44.984375em) {
  .md-typeset {
    font-size: 0.79rem;
  }

  .md-typeset h1 {
    font-size: 1.75rem;
  }

  .course-hero {
    margin: -0.25rem -0.2rem 2rem;
    padding: 1.9rem 1.35rem 2rem;
  }

  .course-hero h1 {
    font-size: 2.35rem;
  }

  .course-hero .course-title-en {
    font-size: 0.88rem;
  }

  .course-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .course-facts > div {
    grid-template-columns: 4.7rem 1fr;
  }

  .course-schedule table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .archive-list a {
    padding: 0.9rem 0;
  }

  .empty-state {
    margin-top: 2rem;
    padding: 1.5rem 1.25rem;
  }
}