@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,600;9..144,700&family=Source+Sans+3:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap");

:root {
  --md-primary-fg-color: #17352c;
  --md-primary-fg-color--light: #29483e;
  --md-primary-fg-color--dark: #10271f;
  --md-accent-fg-color: #ad6c33;
  --course-ink: #17352c;
  --course-ink-soft: #29483e;
  --course-paper: #fffdf7;
  --course-paper-deep: #f5efe4;
  --course-canvas: #ece5d8;
  --course-accent: #ad6c33;
  --course-accent-soft: #d7ad79;
  --course-blue: #3a768b;
  --course-sage: #567857;
  --course-text: #263c35;
  --course-muted: #657269;
  --course-line: rgba(23, 53, 44, 0.15);
  --course-shadow: 0 18px 48px rgba(23, 53, 44, 0.08);
}

html {
  scroll-behavior: smooth;
}

body {
  color: var(--course-text);
  background:
    radial-gradient(circle at 9% 2%, rgba(173, 108, 51, 0.1), transparent 22rem),
    linear-gradient(180deg, #e9e1d4 0, #f4eee5 24rem, #f7f3ec 100%);
}

body,
.md-typeset,
.md-nav,
.md-search__input {
  font-family: "Source Sans 3", sans-serif;
}

.md-header {
  background: rgba(23, 53, 44, 0.97);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.12);
}

.md-header__title {
  font-family: "Fraunces", serif;
  font-weight: 600;
}

.md-search__form {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0.75rem;
}

.md-search__form:hover {
  background: rgba(255, 255, 255, 0.15);
}

.md-grid,
.md-main__inner {
  max-width: 86rem;
}

.md-main__inner {
  margin-top: 1.3rem;
}

.md-content {
  min-width: 0;
}

.md-content__inner {
  min-width: 0;
  margin-bottom: 2.5rem;
  padding: 2rem 2.25rem 2.8rem;
  background:
    linear-gradient(180deg, rgba(245, 239, 228, 0.58), transparent 18rem),
    var(--course-paper);
  border: 1px solid rgba(23, 53, 44, 0.1);
  border-radius: 1.35rem;
  box-shadow: var(--course-shadow);
}

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

.md-sidebar__scrollwrap {
  scrollbar-color: rgba(23, 53, 44, 0.22) transparent;
}

.md-sidebar--primary .md-sidebar__inner {
  padding-right: 0.65rem;
}

.md-nav {
  color: var(--course-muted);
}

.md-nav__title {
  color: var(--course-ink);
  font-family: "Fraunces", serif;
  font-weight: 700;
}

.md-nav__link {
  border-radius: 0.4rem;
  line-height: 1.35;
  transition: color 120ms ease, background-color 120ms ease;
}

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

.md-nav__link--active {
  font-weight: 700;
}

.md-nav__item .md-nav__link--active {
  background: rgba(173, 108, 51, 0.08);
}

.md-typeset {
  color: var(--course-text);
  font-size: 0.91rem;
  line-height: 1.72;
}

.md-typeset p,
.md-typeset ul,
.md-typeset ol {
  max-width: none;
}

.md-typeset p,
.md-typeset li {
  min-width: 0;
  overflow-wrap: break-word;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4 {
  color: var(--course-ink);
  font-family: "Fraunces", serif;
  letter-spacing: -0.018em;
  scroll-margin-top: 4.8rem;
}

.md-typeset h1 {
  max-width: 22ch;
  margin-bottom: 1.25rem;
  font-size: clamp(2rem, 3.5vw, 2.9rem);
  line-height: 1.05;
}

.md-typeset h2 {
  margin-top: 2.5rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--course-line);
  font-size: 1.65rem;
}

.md-typeset h3 {
  margin-top: 2rem;
  font-size: 1.28rem;
}

.md-typeset a {
  color: #8d5428;
  text-decoration-color: rgba(141, 84, 40, 0.35);
  text-underline-offset: 0.14em;
}

.md-typeset a:hover {
  color: var(--course-ink);
}

.md-typeset blockquote {
  color: var(--course-ink-soft);
  border-left-color: var(--course-accent-soft);
}

.section-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 0 0 0.75rem;
  color: var(--course-muted);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.section-meta a {
  color: var(--course-accent);
  text-decoration: none;
}

.section-meta a:hover {
  color: var(--course-ink);
}

.course-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin: -0.55rem 0 1.6rem;
  padding: clamp(1.7rem, 4vw, 3.1rem);
  color: white;
  background:
    radial-gradient(circle at 88% 18%, rgba(215, 173, 121, 0.28), transparent 17rem),
    radial-gradient(circle at 73% 102%, rgba(58, 118, 139, 0.24), transparent 20rem),
    linear-gradient(135deg, #17352c 0%, #214c3e 64%, #17352c 100%);
  border-radius: 1.35rem;
  box-shadow: 0 24px 54px rgba(23, 53, 44, 0.2);
}

.course-hero::after {
  position: absolute;
  z-index: -1;
  top: -5rem;
  right: -4rem;
  width: 18rem;
  height: 18rem;
  content: "";
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 50%;
  box-shadow:
    0 0 0 3rem rgba(255, 255, 255, 0.025),
    0 0 0 6rem rgba(255, 255, 255, 0.018);
}

.md-typeset .course-hero h1 {
  max-width: 17ch;
  margin: 0.2rem 0 0.9rem;
  color: white;
  font-size: clamp(2.25rem, 5vw, 4.25rem);
  line-height: 0.98;
}

.course-eyebrow {
  margin: 0 0 0.8rem;
  color: #f0d9bb;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.course-lede {
  max-width: 56rem;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1.02rem, 2vw, 1.2rem);
  line-height: 1.55;
}

.course-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.4rem;
}

.course-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.55rem;
  padding: 0.65rem 1.05rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none !important;
  transition: transform 140ms ease, background-color 140ms ease, border-color 140ms ease;
}

.course-button:hover {
  transform: translateY(-1px);
}

.course-button.primary {
  color: var(--course-ink) !important;
  background: var(--course-paper-deep);
}

.course-button.secondary {
  color: white !important;
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.course-button.secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.42);
}

.course-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1.25rem;
}

.course-facts span {
  padding: 0.25rem 0.65rem;
  color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.course-shell {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 1rem 0 1.8rem;
}

.course-panel,
.course-card,
.section-card,
.course-route {
  min-width: 0;
  color: inherit;
  background: rgba(255, 253, 247, 0.94);
  border: 1px solid var(--course-line);
  border-radius: 1rem;
  box-shadow: 0 10px 28px rgba(23, 53, 44, 0.05);
}

.course-panel {
  padding: 1.2rem 1.3rem;
}

.md-typeset .course-panel h2 {
  margin: 0 0 0.55rem;
  padding: 0;
  border: 0;
  font-size: 1.18rem;
}

.course-panel p,
.course-panel ul {
  margin-bottom: 0;
}

.course-panel.accent {
  background:
    linear-gradient(150deg, rgba(173, 108, 51, 0.1), transparent 70%),
    rgba(255, 253, 247, 0.96);
}

.course-list {
  padding-left: 1.15rem;
}

.course-list li {
  margin-bottom: 0.3rem;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin: 1rem 0 2rem;
}

.course-card,
.section-card {
  position: relative;
  display: block;
  padding: 1.15rem 1.2rem;
  text-decoration: none !important;
  transition: transform 150ms ease, box-shadow 150ms ease, border-color 150ms ease;
}

.course-card::after,
.section-card::after {
  position: absolute;
  right: 1rem;
  bottom: 0.92rem;
  color: var(--course-accent);
  content: "\2192";
  font-size: 1.1rem;
  transition: transform 150ms ease;
}

.course-card:hover,
.section-card:hover,
.course-route:hover {
  transform: translateY(-2px);
  border-color: rgba(173, 108, 51, 0.42);
  box-shadow: 0 18px 34px rgba(23, 53, 44, 0.09);
}

.course-card:hover::after,
.section-card:hover::after {
  transform: translateX(0.18rem);
}

.course-card-kicker,
.course-card-meta,
.section-card-number {
  display: block;
  color: var(--course-muted);
  font-size: 0.69rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.md-typeset .course-card h3,
.md-typeset .section-card h3 {
  margin: 0.35rem 1.5rem 0.35rem 0;
  color: var(--course-ink);
  font-size: 1.12rem;
  line-height: 1.2;
}

.course-card p {
  margin: 0 0 0.8rem;
  color: var(--course-muted);
  font-size: 0.79rem;
  line-height: 1.5;
}

.course-card-meta {
  padding-right: 1.8rem;
}

.part-hero {
  margin: -0.55rem 0 1.55rem;
  padding: clamp(1.35rem, 3vw, 2rem);
  background:
    radial-gradient(circle at 92% 5%, rgba(173, 108, 51, 0.14), transparent 15rem),
    linear-gradient(135deg, rgba(245, 239, 228, 0.9), rgba(255, 253, 247, 0.98));
  border: 1px solid var(--course-line);
  border-radius: 1.2rem;
}

.part-hero .course-eyebrow {
  color: var(--course-accent);
}

.md-typeset .part-hero h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
}

.part-hero p:last-child {
  max-width: 62ch;
  margin-bottom: 0;
  color: var(--course-muted);
  font-size: 1rem;
}

.part-intro {
  margin: 0 0 1.8rem;
  padding: clamp(1rem, 2.5vw, 1.5rem) clamp(1.1rem, 3vw, 1.75rem);
  color: var(--course-ink);
  background: linear-gradient(135deg, rgba(255, 253, 247, 0.96), rgba(245, 239, 228, 0.58));
  border-left: 0.22rem solid var(--course-accent);
  border-radius: 0 0.85rem 0.85rem 0;
  box-shadow: 0 0 0 1px rgba(53, 44, 34, 0.07);
}

.part-intro > :first-child {
  margin-top: 0;
}

.part-intro > :last-child {
  margin-bottom: 0;
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  margin: 1rem 0 2rem;
}

.section-card {
  min-height: 6.4rem;
}

.course-route-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  margin: 1rem 0 1.6rem;
}

.course-route {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.8rem 0.95rem;
  font-weight: 600;
  text-decoration: none !important;
  transition: transform 150ms ease, box-shadow 150ms ease, border-color 150ms ease;
}

.course-route span {
  display: grid;
  flex: 0 0 auto;
  width: 1.9rem;
  height: 1.9rem;
  color: var(--course-paper);
  background: var(--course-ink);
  border-radius: 50%;
  font-size: 0.72rem;
  place-items: center;
}

.md-typeset .admonition,
.md-typeset details {
  min-width: 0;
  margin: 1.35rem 0;
  overflow: hidden;
  font-size: 0.86rem;
  line-height: 1.68;
  background: rgba(255, 253, 247, 0.96);
  border: 1px solid var(--course-line);
  border-left-width: 0.24rem;
  border-radius: 0.8rem;
  box-shadow: 0 8px 20px rgba(23, 53, 44, 0.045);
}

.md-typeset .admonition-title,
.md-typeset summary {
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
  font-family: "Fraunces", serif;
  font-size: 0.9rem;
  letter-spacing: -0.005em;
}

.md-typeset .admonition-title {
  border-radius: 0;
}

.md-typeset details summary {
  border-radius: 0;
}

.md-typeset .admonition.abstract,
.md-typeset details.abstract {
  border-left-color: var(--course-ink);
}

.md-typeset .admonition.info,
.md-typeset details.info {
  border-left-color: var(--course-blue);
}

.md-typeset .admonition.success,
.md-typeset details.success {
  border-left-color: var(--course-sage);
}

.md-typeset .admonition.example,
.md-typeset details.example {
  border-left-color: var(--course-accent);
}

.md-typeset .admonition.note,
.md-typeset details.note {
  border-left-color: #c4903d;
}

.md-typeset .admonition.assumption,
.md-typeset details.assumption {
  border-left-color: #7a6750;
}

.md-typeset .admonition.algorithm,
.md-typeset details.algorithm {
  border-left-color: var(--course-accent);
  background:
    linear-gradient(150deg, rgba(173, 108, 51, 0.07), transparent 55%),
    rgba(255, 253, 247, 0.98);
}

.md-typeset .admonition > :last-child,
.md-typeset details > :last-child {
  margin-bottom: 0.9rem;
}

.md-typeset .admonition p,
.md-typeset details p,
.md-typeset .admonition ul,
.md-typeset details ul,
.md-typeset .admonition ol,
.md-typeset details ol {
  max-width: none;
}

.md-typeset table:not([class]) {
  display: table;
  width: 100%;
  overflow: hidden;
  border-radius: 0.65rem;
  box-shadow: 0 0 0 1px var(--course-line);
}

.md-typeset table:not([class]) th {
  color: var(--course-paper);
  background: var(--course-ink);
}

.md-typeset pre > code {
  border-radius: 0.7rem;
}

.md-typeset mjx-container {
  max-width: 100%;
}

.md-typeset mjx-container[jax="CHTML"][display="true"] {
  margin: 1.15rem 0 !important;
  padding: 0.35rem 0.15rem 0.55rem;
  overflow-x: auto;
  overflow-y: hidden;
}

.course-anchor {
  position: relative;
  top: -5.5rem;
  display: block;
  height: 0;
  margin: 0;
  padding: 0;
  visibility: hidden;
  pointer-events: none;
}

.mermaid {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: 100%;
  margin: 1.25rem 0;
  padding: 1rem;
  overflow-x: auto;
  background: rgba(245, 239, 228, 0.52);
  border: 1px solid var(--course-line);
  border-radius: 0.8rem;
}

.mermaid > div {
  display: flex !important;
  justify-content: center !important;
  width: 100%;
  min-width: 0;
}

.mermaid svg {
  display: block !important;
  max-width: 100%;
  height: auto;
  margin-left: auto !important;
  margin-right: auto !important;
}

.md-footer {
  background: var(--course-ink);
}

@media (max-width: 960px) {
  .md-content__inner {
    padding: 1.5rem 1.35rem 2.2rem;
    border-radius: 1rem;
  }

  .course-grid,
  .section-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .md-main__inner {
    margin-top: 0.5rem;
  }

  .md-content__inner {
    margin-bottom: 1rem;
    padding: 1.05rem 0.9rem 1.65rem;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .md-typeset {
    font-size: 0.88rem;
    line-height: 1.68;
  }

  .md-typeset h1 {
    font-size: 2.1rem;
  }

  .course-hero {
    padding: 1.45rem 1.1rem;
    border-radius: 1rem;
  }

  .md-typeset .course-hero h1 {
    max-width: none;
    overflow-wrap: normal;
    font-size: clamp(1.3rem, 8.25vw, 1.7rem);
    hyphens: none;
    word-break: normal;
  }

  .course-shell,
  .course-route-grid {
    grid-template-columns: 1fr;
  }

  .section-meta {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .course-card,
  .section-card,
  .course-route,
  .course-button {
    transition: none;
  }
}