.course-detail-body {
  overflow-x: clip;
  overflow-y: visible;
}

.course-detail-page {
  --course-max-width: 1240px;
  --course-radius-lg: 20px;
  --course-radius-md: 14px;
  --course-accent-ink: #087a43;
  --course-action: #007a3d;
  --course-accent-soft: color-mix(in srgb, var(--accent) 12%, transparent);
  --course-accent-border: color-mix(in srgb, var(--accent) 30%, var(--border-muted));
  background: var(--bg-section);
  color: var(--text);
  font-family: var(--font-primary);
  padding-bottom: 96px;
}

[data-theme="dark"] .course-detail-page {
  --course-accent-ink: #4bd38c;
  --course-action: #007a3d;
}

.course-detail-page *,
.course-detail-page *::before,
.course-detail-page *::after {
  box-sizing: border-box;
}

.course-detail-page a,
.course-detail-page button {
  -webkit-tap-highlight-color: transparent;
}

.course-detail-shell {
  width: min(calc(100% - 40px), var(--course-max-width));
  margin-inline: auto;
}

.course-detail-breadcrumb {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.course-detail-breadcrumb__inner {
  min-height: 54px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
}

.course-detail-breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 160ms ease;
}

.course-detail-breadcrumb a:hover {
  color: var(--accent);
}

.course-detail-breadcrumb i {
  font-size: 11px;
  color: var(--muted-light);
}

.course-detail-breadcrumb__current {
  color: var(--bo);
  overflow: hidden;
  text-overflow: ellipsis;
}

.course-hero {
  position: relative;
  padding: 58px 0 62px;
  border-bottom: 1px solid var(--border);
  overflow: visible;
}

.course-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 10% 0%, var(--course-accent-soft), transparent 36%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-section) 100%);
}

.course-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 72px;
  align-items: start;
}

.course-hero__content {
  min-width: 0;
  padding-top: 4px;
}

.course-eyebrow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.course-level-badge,
.course-category-badge {
  min-height: 30px;
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
}

.course-level-badge {
  border: 1px solid var(--course-accent-border);
  background: var(--course-accent-soft);
  color: var(--course-accent-ink);
}

.course-level-badge.Intermediate {
  border-color: color-mix(in srgb, #f59e0b 35%, var(--border-muted));
  background: color-mix(in srgb, #f59e0b 12%, transparent);
  color: #d78a00;
}

.course-level-badge.Advanced {
  border-color: color-mix(in srgb, #ef4444 35%, var(--border-muted));
  background: color-mix(in srgb, #ef4444 11%, transparent);
  color: #e14a4a;
}

.course-category-badge {
  border: 1px solid var(--border-muted);
  color: var(--muted-strong);
  background: var(--bg-card);
  font-weight: 600;
}

.course-hero__title {
  max-width: 760px;
  margin: 0;
  color: var(--text);
  font-size: clamp(34px, 4.5vw, 58px);
  font-weight: 750;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

.course-hero__lead {
  max-width: 720px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.75;
}

.course-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.course-fact {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--border-muted);
  border-radius: 10px;
  background: color-mix(in srgb, var(--bg-card) 82%, transparent);
  color: var(--muted-strong);
  font-size: 13px;
  font-weight: 600;
}

.course-fact i {
  color: var(--course-accent-ink);
  font-size: 16px;
}

.course-creator-summary {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 30px;
}

.course-creator-summary__image {
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  border: 2px solid var(--bg);
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 1px var(--border-muted);
}

.course-creator-summary__label,
.course-creator-summary__detail {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.course-creator-summary__name {
  display: inline-block;
  margin: 1px 0;
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.course-purchase-card {
  position: relative;
  z-index: 3;
  overflow: hidden;
  border: 1px solid var(--border-muted);
  border-radius: var(--course-radius-lg);
  background: var(--bg-card);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.13);
}

[data-theme="dark"] .course-purchase-card {
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.42);
}

.course-purchase-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--surface-secondary);
}

.course-purchase-card__media::after {
  content: "";
  position: absolute;
  inset: 45% 0 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.58));
}

.course-purchase-card__media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: transform 300ms ease;
}

.course-preview-trigger {
  position: absolute;
  z-index: 2;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
}

.course-preview-trigger:hover + .course-preview-label,
.course-preview-trigger:focus-visible + .course-preview-label {
  color: #fff;
}

.course-preview-trigger:hover .course-preview-trigger__icon {
  transform: scale(1.07);
  background: var(--accent);
  color: #fff;
}

.course-preview-trigger:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: -4px;
}

.course-preview-trigger__icon {
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #fff;
  color: var(--accent);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.24);
  font-size: 28px;
  transition: transform 180ms ease, background-color 180ms ease, color 180ms ease;
}

.course-preview-trigger__icon i {
  margin-inline-start: 3px;
}

.course-preview-label {
  position: absolute;
  z-index: 2;
  inset-inline: 0;
  bottom: 15px;
  margin: 0;
  color: rgba(255, 255, 255, 0.94);
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  pointer-events: none;
}

.course-purchase-card__body {
  padding: 24px;
}

.course-price-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 4px;
}

.course-price-value {
  margin: 0;
  color: var(--text);
  font-size: 27px;
  font-weight: 780;
  letter-spacing: -0.025em;
}

.course-access-copy {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 12px;
}

.course-enrollment-action {
  width: 100%;
  min-height: 49px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 18px;
  border: 1px solid var(--course-action);
  border-radius: 10px;
  background: var(--course-action);
  color: #fff;
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
  transition: transform 160ms ease, filter 160ms ease, box-shadow 160ms ease;
}

.course-enrollment-action:hover {
  color: #fff;
  filter: brightness(0.94);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--accent) 22%, transparent);
}

.course-enrollment-action:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent);
  outline-offset: 3px;
}

.course-enrollment-action.is-disabled {
  border-color: var(--border-muted);
  background: var(--surface-secondary);
  color: var(--muted);
  cursor: not-allowed;
}

.course-enrollment-note {
  margin: 10px 0 0;
  color: #dc5353;
  font-size: 12px;
  line-height: 1.5;
}

.course-includes {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--border-muted);
}

.course-includes__title {
  margin: 0 0 15px;
  color: var(--text);
  font-size: 13px;
  font-weight: 750;
}

.course-includes__list {
  display: grid;
  gap: 13px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.course-includes__list li {
  display: grid;
  grid-template-columns: 20px 1fr auto;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 12px;
}

.course-includes__list i {
  color: var(--course-accent-ink);
  font-size: 16px;
}

.course-includes__list strong {
  color: var(--muted-strong);
  font-weight: 650;
}

.course-includes__list span {
  color: var(--muted);
  text-align: end;
}

.course-main {
  padding: 46px 0 0;
}

.course-main__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 72px;
  align-items: start;
}

.course-main__content {
  min-width: 0;
}

.course-sticky-enrollment {
  position: sticky;
  top: calc(var(--header-h, 72px) + 22px);
  padding: 24px;
  border: 1px solid var(--border-muted);
  border-radius: var(--course-radius-lg);
  background: var(--bg-card);
}

.course-sticky-enrollment__eyebrow {
  color: var(--course-accent-ink);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.course-sticky-enrollment__price {
  margin: 7px 0 0;
  color: var(--text);
  font-size: 25px;
  font-weight: 780;
  letter-spacing: -0.025em;
}

.course-sticky-enrollment__copy {
  margin: 9px 0 17px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.course-sticky-enrollment__access {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  margin-top: 13px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
}

.course-sticky-enrollment__access i {
  color: var(--course-accent-ink);
}

.course-section-nav {
  position: sticky;
  z-index: 20;
  top: calc(var(--header-h, 72px) + 8px);
  align-self: start;
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 28px;
  padding: 7px;
  border: 1px solid var(--border-muted);
  border-radius: 12px;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.course-section-nav.is-stuck {
  border-color: color-mix(in srgb, var(--course-accent-ink) 22%, var(--border-muted));
  background: color-mix(in srgb, var(--bg) 96%, transparent);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.11);
}

[data-theme="dark"] .course-section-nav.is-stuck {
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.42);
}

.course-section-nav a {
  flex: 1;
  padding: 9px 13px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  transition: color 160ms ease, background-color 160ms ease;
}

.course-section-nav a:hover,
.course-section-nav a:focus-visible {
  background: var(--surface-secondary);
  color: var(--text);
}

.course-section-nav a.is-active,
.course-section-nav a[aria-current="location"] {
  background: var(--course-accent-soft);
  color: var(--course-accent-ink);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--course-accent-ink) 20%, transparent);
}

.course-content-section {
  scroll-margin-top: calc(var(--header-h, 72px) + 82px);
  margin-bottom: 28px;
  padding: 30px;
  border: 1px solid var(--border-muted);
  border-radius: var(--course-radius-lg);
  background: var(--bg-card);
}

.course-progress-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px 24px;
  margin-bottom: 28px;
  padding: 24px 28px;
  border: 1px solid var(--course-accent-border);
  border-radius: 18px;
  background: color-mix(in srgb, var(--course-accent-soft) 58%, var(--surface-primary));
}

.course-progress-card__copy h2 {
  margin: 4px 0 5px;
  color: var(--text);
  font-size: clamp(20px, 2vw, 26px);
}

.course-progress-card__copy p,
.course-progress-card__empty {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.course-progress-card__meter {
  grid-column: 1 / -1;
  height: 9px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-strong);
}

.course-progress-card__meter span {
  width: 0;
  height: 100%;
  display: block;
  border-radius: inherit;
  background: var(--accent);
  transition: width 220ms ease;
}

.course-progress-card__action {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
}

.course-progress-card__action:hover,
.course-progress-card__action:focus-visible {
  color: #fff;
  filter: brightness(.94);
}

.course-section-heading {
  margin-bottom: 23px;
}

.course-section-heading--row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
}

.course-section-heading__kicker {
  display: block;
  margin-bottom: 6px;
  color: var(--course-accent-ink);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.course-section-heading h2 {
  margin: 0;
  color: var(--text);
  font-size: clamp(22px, 2.4vw, 29px);
  font-weight: 740;
  letter-spacing: -0.025em;
}

.course-section-heading p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.course-outcomes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.course-outcomes li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 10px;
  color: var(--muted-strong);
  font-size: 14px;
  line-height: 1.65;
}

.course-outcomes i {
  margin-top: 2px;
  color: var(--course-accent-ink);
  font-size: 18px;
}

.course-description-copy {
  color: var(--muted-strong);
  font-size: 14px;
  line-height: 1.8;
}

.course-description-copy > :last-child {
  margin-bottom: 0;
}

.course-description-copy h1,
.course-description-copy h2,
.course-description-copy h3,
.course-description-copy h4,
.course-description-copy h5,
.course-description-copy h6 {
  color: var(--text);
}

.course-description-copy a {
  color: var(--course-accent-ink);
}

.course-expand-button {
  flex: 0 0 auto;
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid var(--border-muted);
  border-radius: 9px;
  background: transparent;
  color: var(--muted-strong);
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 160ms ease, color 160ms ease, background-color 160ms ease;
}

.course-expand-button:hover,
.course-expand-button:focus-visible {
  border-color: var(--course-accent-border);
  background: var(--course-accent-soft);
  color: var(--course-accent-ink);
}

.curriculum-card {
  padding: 0;
  border: 1px solid var(--border-muted);
  border-radius: var(--course-radius-md);
  background: var(--bg);
  overflow: hidden;
}

.course-detail-page .module {
  border-bottom: 1px solid var(--border-muted);
  background: transparent;
}

.course-detail-page .module:last-child {
  border-bottom: 0;
}

.course-detail-page .module-heading {
  margin: 0;
}

.course-detail-page .module-header {
  width: 100%;
  min-height: 76px;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 24px;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border: 0;
  background: transparent;
  color: var(--text);
  text-align: start;
  cursor: pointer;
}

.course-detail-page .module-header:hover,
.course-detail-page .module-header:focus-visible {
  background: var(--surface-secondary);
}

.course-detail-page .module-header:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.course-detail-page .module-num {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--course-accent-soft);
  color: var(--course-accent-ink);
  font-size: 13px;
  font-weight: 800;
}

.course-detail-page .module-info {
  min-width: 0;
}

.course-detail-page .module-title {
  display: block;
  color: var(--text);
  font-size: 14px;
  font-weight: 720;
  line-height: 1.45;
}

.course-detail-page .module-meta {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 550;
}

.course-detail-page .toggle-icon {
  color: var(--muted);
  font-size: 15px;
  transition: transform 180ms ease;
}

.course-detail-page .module.open .toggle-icon {
  transform: rotate(180deg);
}

.course-detail-page .module-body {
  display: grid;
  grid-template-rows: 0fr;
  padding: 0 18px 0 70px;
  opacity: 0;
  overflow: hidden;
  transition: grid-template-rows 220ms ease, padding 220ms ease, opacity 180ms ease;
}

.course-detail-page .module.open .module-body {
  grid-template-rows: 1fr;
  padding: 2px 18px 15px 70px;
  opacity: 1;
}

.course-detail-page .module-body > ul {
  min-height: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.course-lesson {
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-top: 1px solid var(--border);
  color: var(--muted-strong);
}

.course-lesson:target,
.course-lesson:focus {
  border-radius: 10px;
  background: var(--course-accent-soft);
  outline: 2px solid color-mix(in srgb, var(--accent) 36%, transparent);
  outline-offset: 2px;
}

.course-lesson.is-completed {
  background: color-mix(in srgb, var(--accent) 5%, transparent);
}

.course-lesson__main {
  min-width: 0;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.course-lesson__main > i {
  flex: 0 0 auto;
  margin: 2px 0 0;
  color: var(--course-accent-ink);
  font-size: 16px;
}

.course-lesson__content {
  min-width: 0;
  width: 100%;
}

.course-lesson__details {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 9px;
  margin-top: 4px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 650;
}

.course-lesson__details span + span::before {
  margin-inline-end: 9px;
  content: "·";
}

.course-lesson__text {
  margin-top: 13px;
  padding: 15px 17px;
  border: 1px solid var(--border-muted);
  border-radius: 11px;
  background: var(--surface-secondary);
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.75;
}

.course-lesson__text > :last-child {
  margin-bottom: 0;
}

.course-detail-page .course-lesson__title,
.course-detail-page .course-lesson__title-button {
  margin: 0;
  border: 0;
  padding: 0;
  background: none;
  color: var(--muted-strong);
  font: inherit;
  font-size: 12px;
  font-weight: 620;
  line-height: 1.5;
  text-align: start;
  text-decoration: none;
}

.course-lesson__title-button,
a.course-lesson__title {
  color: var(--course-accent-ink);
  cursor: pointer;
}

.course-lesson__title-button:hover,
a.course-lesson__title:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.course-lesson__resources {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 10px;
  margin-top: 5px;
}

.course-lesson__resources a {
  color: var(--muted);
  font-size: 10px;
  text-decoration: none;
}

.course-lesson__resources a:hover {
  color: var(--course-accent-ink);
}

.course-detail-page .course-lesson__meta {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 10px;
  white-space: nowrap;
}

.course-detail-page .course-lesson__meta > span {
  color: var(--muted-strong);
  font-size: 10px;
}

.course-complete-button {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  padding: 0;
  background: transparent;
  cursor: pointer;
}

.course-complete-button:hover,
.course-complete-button:focus-visible {
  background: var(--surface-secondary);
}

.course-requirements {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.course-requirements li {
  position: relative;
  padding-inline-start: 21px;
  color: var(--muted-strong);
  font-size: 14px;
  line-height: 1.65;
}

.course-requirements li::before {
  content: "";
  position: absolute;
  inset-inline-start: 2px;
  top: 0.7em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--course-accent-ink);
}

.course-instructor-profile {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.course-instructor-profile__image {
  width: 86px;
  height: 86px;
  border: 1px solid var(--border-muted);
  border-radius: 18px;
  object-fit: cover;
}

.course-instructor-profile__name {
  margin: 0;
  color: var(--text);
  font-size: 18px;
  font-weight: 740;
}

.course-instructor-profile__role,
.course-instructor-profile__experience,
.course-instructor-profile__bio {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.course-instructor-profile__bio {
  margin-top: 13px;
  color: var(--muted-strong);
}

.course-instructor-qualifications {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.course-instructor-qualifications li {
  padding: 6px 10px;
  border: 1px solid var(--border-muted);
  border-radius: 999px;
  background: var(--surface-secondary);
  color: var(--muted-strong);
  font-size: 10px;
  font-weight: 700;
}

.course-mobile-enrollment {
  display: none;
}

.course-video-modal .modal-content {
  overflow: hidden;
  border: 1px solid var(--border-muted);
  border-radius: 16px;
  background: #080808;
}

.course-video-modal .modal-header {
  border-bottom: 1px solid #262626;
  padding: 16px 18px;
}

.course-video-modal .modal-title {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
}

.course-video-modal__error {
  display: grid;
  place-items: center;
  margin: 0;
  background: #080808;
  color: #fff;
  font-size: 14px;
}

@media (max-width: 1050px) {
  .course-hero__grid,
  .course-main__grid {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 38px;
  }
}

@media (max-width: 880px) {
  .course-detail-page {
    padding-bottom: 112px;
  }

  .course-hero {
    padding: 38px 0 44px;
  }

  .course-hero__grid,
  .course-main__grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .course-hero__aside {
    grid-row: 2;
  }

  .course-purchase-card {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  }

  .course-purchase-card__media {
    height: 100%;
    min-height: 280px;
    aspect-ratio: auto;
  }

  .course-sticky-enrollment {
    display: none;
  }

  .course-mobile-enrollment.is-mobile-stuck {
    position: fixed;
    z-index: 1035;
    inset-inline: 10px;
    bottom: calc(var(--mobile-nav-h, 76px) + 8px);
    display: grid;
    grid-template-columns: auto minmax(190px, 320px);
    align-items: center;
    justify-content: center;
    gap: 22px;
    padding: 10px 12px;
    border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--border-muted));
    border-radius: 16px;
    background: color-mix(in srgb, var(--bg) 94%, transparent);
    box-shadow: 0 -8px 25px rgba(0, 0, 0, 0.12);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    opacity: 0;
    pointer-events: none;
    transform: translateY(16px) scale(.985);
    transform-origin: center bottom;
    transition: opacity 200ms ease, transform 240ms cubic-bezier(.2, .8, .2, 1);
    will-change: opacity, transform;
  }

  .course-mobile-enrollment.is-mobile-stuck.is-mobile-stuck-visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) scale(1);
  }

  .course-mobile-enrollment.is-mobile-stuck .course-mobile-enrollment__price {
    margin: 0;
    color: var(--text);
    font-size: 18px;
    font-weight: 780;
    white-space: nowrap;
  }

  .course-mobile-enrollment.is-mobile-stuck .course-enrollment-action {
    min-height: 46px;
  }
}

@media (max-width: 640px) {
  .course-progress-card {
    grid-template-columns: minmax(0, 1fr);
    padding: 20px 18px;
  }

  .course-progress-card__action {
    width: 100%;
  }

  .course-detail-shell {
    width: min(calc(100% - 28px), var(--course-max-width));
  }

  .course-detail-breadcrumb__inner {
    min-height: 48px;
  }

  .course-hero {
    padding: 30px 0 34px;
  }

  .course-hero__title {
    font-size: clamp(30px, 10vw, 42px);
  }

  .course-hero__lead {
    margin-top: 17px;
    font-size: 15px;
    line-height: 1.65;
  }

  .course-facts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 23px;
  }

  .course-fact {
    min-width: 0;
    padding-inline: 10px;
  }

  .course-purchase-card {
    display: block;
    border-radius: 16px;
  }

  .course-purchase-card__media {
    min-height: 0;
    aspect-ratio: 16 / 9;
  }

  .course-purchase-card__body {
    padding: 20px;
  }

  .course-main {
    padding-top: 26px;
  }

  .course-section-nav {
    top: calc(var(--header-h, 72px) + 6px);
    margin-inline: -2px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .course-section-nav::-webkit-scrollbar {
    display: none;
  }

  .course-section-nav a {
    flex: 0 0 auto;
    min-width: 92px;
  }

  .course-content-section {
    margin-bottom: 18px;
    padding: 22px 18px;
    border-radius: 16px;
  }

  .course-section-heading--row {
    align-items: start;
  }

  .course-section-heading h2 {
    font-size: 23px;
  }

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

  .course-detail-page .module-header {
    grid-template-columns: 34px minmax(0, 1fr) 20px;
    gap: 11px;
    padding: 14px 12px;
  }

  .course-detail-page .module-num {
    width: 34px;
    height: 34px;
  }

  .course-detail-page .module-body,
  .course-detail-page .module.open .module-body {
    padding-inline: 14px;
  }

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

  .course-lesson__meta {
    padding-top: 1px;
  }

  .course-instructor-profile {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 15px;
  }

  .course-instructor-profile__image {
    width: 64px;
    height: 64px;
    border-radius: 14px;
  }

  .course-mobile-enrollment.is-mobile-stuck {
    grid-template-columns: minmax(72px, auto) minmax(170px, 1fr);
    gap: 14px;
    justify-content: stretch;
  }
}

@media (max-width: 400px) {
  .course-facts {
    grid-template-columns: 1fr;
  }

  .course-mobile-enrollment.is-mobile-stuck {
    padding-inline: 14px;
  }

  .course-mobile-enrollment.is-mobile-stuck .course-enrollment-action {
    padding-inline: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .course-detail-page *,
  .course-detail-page *::before,
  .course-detail-page *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}