/* 独立课时学习页：只作用于 CloudVod 沉浸式模板。 */
.cloudvod-learning-document {
  --cv-learning-bg: #f4f7fb;
  --cv-learning-surface: #ffffff;
  --cv-learning-surface-muted: #f7f9fc;
  --cv-learning-line: #dfe6ef;
  --cv-learning-text: #182230;
  --cv-learning-muted: #667085;
  --cv-learning-accent: #147d5a;
  --cv-learning-accent-soft: #e9f7f0;
  --cv-learning-scrollbar: #aab3bd;
  --cv-learning-scrollbar-track: transparent;
  background: var(--cv-learning-bg) !important;
  color: var(--cv-learning-text) !important;
  margin: 0 !important;
  padding: 0 !important;
}

.cloudvod-learning-document,
.cloudvod-learning-document * {
  box-sizing: border-box;
}

.cloudvod-learning-document .cloudvod-learning-screen {
  height: 100dvh;
  min-height: 100vh;
  width: 100%;
}

.cloudvod-learning-document .cloudvod-learning-content {
  height: 100%;
  width: 100%;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn {
  background: var(--cv-learning-bg) !important;
  display: grid !important;
  gap: 0 !important;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 416px) !important;
  grid-template-rows: auto minmax(0, 1fr) !important;
  height: 100dvh !important;
  margin: 0 !important;
  max-width: none !important;
  min-height: 100vh !important;
  overflow: hidden !important;
  width: 100% !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn::before {
  display: none !important;
}

@media (min-width: 783px) {
  body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn-sidebar,
  body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn-main {
    order: initial !important;
  }
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn-sidebar {
  align-self: stretch !important;
  background: var(--cv-learning-surface) !important;
  border: 0 !important;
  border-left: 1px solid var(--cv-learning-line) !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  display: flex !important;
  flex-direction: column !important;
  height: 100% !important;
  max-height: none !important;
  min-height: 0 !important;
  overflow: hidden !important;
  padding: 20px 18px 18px 14px !important;
  position: relative !important;
  top: auto !important;
  z-index: 10 !important;
}

.cloudvod-learning-document .cloudvod-learning-sidebar-head {
  flex: 0 0 auto;
  min-width: 0;
}

.cloudvod-learning-document .cloudvod-learning-fold-button {
  align-items: center;
  background: var(--cv-learning-surface-muted);
  border: 1px solid var(--cv-learning-line);
  border-right: 0;
  border-radius: 8px 0 0 8px;
  color: var(--cv-learning-muted);
  cursor: pointer;
  display: flex;
  height: 56px;
  justify-content: center;
  left: 0;
  padding: 0;
  position: absolute;
  top: 50%;
  transform: translate(0, -50%);
  width: 24px;
  z-index: 5;
}

.cloudvod-learning-document .cloudvod-learning-fold-button:hover,
.cloudvod-learning-document .cloudvod-learning-fold-button:focus-visible {
  background: var(--cv-learning-accent-soft);
  color: var(--cv-learning-accent);
  outline: 0;
}

.cloudvod-learning-document .cloudvod-learning-fold-icon {
  border-bottom: 2px solid currentColor;
  border-left: 2px solid currentColor;
  display: block;
  height: 8px;
  transform: rotate(45deg);
  transition: transform .2s ease;
  width: 8px;
}

.cloudvod-learning-document .cloudvod-learning-sidebar-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  padding-left: 4px;
  scrollbar-color: var(--cv-learning-scrollbar) var(--cv-learning-scrollbar-track);
  scrollbar-width: thin;
}

.cloudvod-learning-document .cloudvod-learning-sidebar-scroll::-webkit-scrollbar {
  width: 8px;
}

.cloudvod-learning-document .cloudvod-learning-sidebar-scroll::-webkit-scrollbar-thumb {
  background: var(--cv-learning-scrollbar) !important;
  border: 2px solid transparent;
  background-clip: content-box;
  border-radius: 999px;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn-main {
  align-self: stretch !important;
  background: var(--cv-learning-bg) !important;
  border: 0 !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  height: 100% !important;
  min-width: 0 !important;
  min-height: 0 !important;
  overflow-x: hidden !important;
  overflow-y: auto !important;
  order: 1 !important;
  padding: 24px clamp(24px, 4vw, 64px) 48px !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn-sidebar {
  order: 2 !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn.is-directory-collapsed {
  grid-template-columns: minmax(0, 1fr) 0 !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn.is-directory-collapsed .cloudvod-learn-sidebar {
  border-left: 0 !important;
  overflow: visible !important;
  padding-left: 0 !important;
  padding-right: 0 !important;
  width: 0 !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn.is-directory-collapsed #cloudvod-learning-sidebar .cloudvod-learning-sidebar-head,
body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn.is-directory-collapsed #cloudvod-learning-sidebar .cloudvod-learning-sidebar-scroll {
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn.is-directory-collapsed .cloudvod-learning-fold-button {
  border-left: 1px solid var(--cv-learning-line);
  border-radius: 8px 0 0 8px;
  left: auto;
  right: 0;
  transform: translate(0, -50%);
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn.is-directory-collapsed .cloudvod-learning-fold-icon {
  transform: rotate(225deg);
}

.cloudvod-learning-document .cloudvod-learning-header,
.cloudvod-learning-document .cloudvod-lesson,
.cloudvod-learning-document .cloudvod-materials {
  margin-left: auto;
  margin-right: auto;
  max-width: 1080px;
  width: 100%;
}

.cloudvod-learning-document .cloudvod-learning-header {
  align-items: center;
  display: flex;
  gap: 20px;
  justify-content: space-between;
  margin-bottom: 14px;
  min-height: 40px;
  position: relative;
  z-index: 20;
}

.cloudvod-learning-document .cloudvod-learning-breadcrumb {
  min-width: 0;
  overflow: hidden;
}

.cloudvod-learning-document .cloudvod-learning-breadcrumb ol {
  align-items: center;
  display: flex;
  gap: 0;
  list-style: none;
  margin: 0;
  min-width: 0;
  overflow: hidden;
  padding: 0;
  white-space: nowrap;
}

.cloudvod-learning-document .cloudvod-learning-breadcrumb li {
  color: var(--cv-learning-muted);
  font-size: 13px;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cloudvod-learning-document .cloudvod-learning-breadcrumb li + li::before {
  color: var(--cv-learning-muted);
  content: '/';
  margin: 0 9px;
}

.cloudvod-learning-document .cloudvod-learning-breadcrumb li:first-child {
  flex: 0 0 auto;
}

.cloudvod-learning-document .cloudvod-learning-breadcrumb li:nth-child(2),
.cloudvod-learning-document .cloudvod-learning-breadcrumb li:nth-child(3),
.cloudvod-learning-document .cloudvod-learning-breadcrumb li:nth-child(4) {
  flex: 0 1 auto;
}

.cloudvod-learning-document .cloudvod-learning-breadcrumb a {
  color: inherit !important;
  text-decoration: none;
}

.cloudvod-learning-document .cloudvod-learning-breadcrumb a:hover,
.cloudvod-learning-document .cloudvod-learning-breadcrumb li[aria-current='page'] {
  color: var(--cv-learning-accent) !important;
}

.cloudvod-learning-document .cloudvod-learning-actions {
  align-items: center;
  display: flex;
  flex: 0 0 auto;
  gap: 6px;
}

.cloudvod-learning-document .cloudvod-learning-theme-toggle,
.cloudvod-learning-document .cloudvod-learning-avatar-button {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: 8px;
  color: var(--cv-learning-muted);
  cursor: pointer;
  display: inline-flex;
  height: 38px;
  justify-content: center;
  margin: 0;
  padding: 6px 9px;
  text-decoration: none;
  transition: background-color .2s ease-out, color .2s ease-out;
  width: 38px;
}

.cloudvod-learning-document .cloudvod-learning-theme-toggle:hover,
.cloudvod-learning-document .cloudvod-learning-theme-toggle:focus-visible,
.cloudvod-learning-document .cloudvod-learning-avatar-button:hover,
.cloudvod-learning-document .cloudvod-learning-avatar-button:focus-visible {
  background: var(--cv-learning-surface-muted);
  color: var(--cv-learning-accent);
  outline: none;
}

.cloudvod-learning-document .cloudvod-learning-theme-toggle:focus-visible,
.cloudvod-learning-document .cloudvod-learning-avatar-button:focus-visible,
.cloudvod-learning-document .cloudvod-learning-drawer-close:focus-visible,
.cloudvod-learning-document .cloudvod-learning-menu-button:focus-visible {
  box-shadow: 0 0 0 3px var(--cv-learning-accent-soft);
}

.cloudvod-learning-document .cloudvod-learning-theme-toggle {
  overflow: hidden;
}

.cloudvod-learning-document .cloudvod-learning-theme-icon {
  display: inline-block;
  font-family: FontAwesome;
  font-style: normal;
  height: 1em;
  line-height: 1;
  overflow: hidden;
  position: relative;
  width: 1em;
}

.cloudvod-learning-document .cloudvod-learning-theme-icon .fa-toggle-theme {
  display: block;
  font-family: FontAwesome;
  font-style: normal;
  height: 1em;
  line-height: 1;
  position: relative;
  width: 1em;
}

.cloudvod-learning-document .cloudvod-learning-theme-icon .fa-toggle-theme::before,
.cloudvod-learning-document .cloudvod-learning-theme-icon .fa-toggle-theme::after {
  bottom: 0;
  left: 0;
  margin: auto;
  position: absolute;
  right: 0;
  text-align: center;
  top: 0;
  transition: transform .4s;
}

.cloudvod-learning-document .cloudvod-learning-theme-icon .fa-toggle-theme::before {
  content: '\f185';
  transform: translateX(2em);
}

.cloudvod-learning-document .cloudvod-learning-theme-icon .fa-toggle-theme::after {
  content: '\f186';
}

.cloudvod-learning-document.dark-theme .cloudvod-learning-theme-icon .fa-toggle-theme::before,
body.dark-theme.cloudvod-learning-document .cloudvod-learning-theme-icon .fa-toggle-theme::before {
  transform: translateX(0);
}

.cloudvod-learning-document.dark-theme .cloudvod-learning-theme-icon .fa-toggle-theme::after,
body.dark-theme.cloudvod-learning-document .cloudvod-learning-theme-icon .fa-toggle-theme::after {
  transform: translateX(-2em);
}

.cloudvod-learning-document .cloudvod-learning-user {
  position: relative;
}

.cloudvod-learning-document .cloudvod-learning-avatar-button {
  border-radius: 999px;
  padding: 2px;
}

.cloudvod-learning-document .cloudvod-learning-avatar-image,
.cloudvod-learning-document .cloudvod-learning-avatar-button img {
  border-radius: 50%;
  display: block;
  height: 32px;
  object-fit: cover;
  width: 32px;
}

.cloudvod-learning-document .cloudvod-learning-avatar-placeholder {
  background: var(--cv-learning-muted);
  border: 2px solid var(--cv-learning-surface);
  border-radius: 50%;
  display: block;
  height: 30px;
  position: relative;
  width: 30px;
}

.cloudvod-learning-document .cloudvod-learning-avatar-placeholder::before {
  background: var(--cv-learning-surface);
  border-radius: 50%;
  content: '';
  height: 8px;
  left: 9px;
  position: absolute;
  top: 5px;
  width: 8px;
}

.cloudvod-learning-document .cloudvod-learning-avatar-placeholder::after {
  background: var(--cv-learning-surface);
  border-radius: 8px 8px 5px 5px;
  bottom: 4px;
  content: '';
  height: 8px;
  left: 5px;
  position: absolute;
  width: 16px;
}

.cloudvod-learning-document .cloudvod-learning-user-menu {
  background: var(--cv-learning-surface);
  border: 1px solid var(--cv-learning-line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, .12);
  min-width: 190px;
  padding: 8px;
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 60;
}

.cloudvod-learning-document .cloudvod-learning-user-menu[hidden] {
  display: none;
}

.cloudvod-learning-document .cloudvod-learning-user-menu-head {
  border-bottom: 1px solid var(--cv-learning-line);
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 5px;
  padding: 7px 9px 10px;
}

.cloudvod-learning-document .cloudvod-learning-user-menu-head strong {
  color: var(--cv-learning-text);
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cloudvod-learning-document .cloudvod-learning-user-menu-head span {
  color: var(--cv-learning-muted);
  font-size: 12px;
}

.cloudvod-learning-document .cloudvod-learning-user-menu > a {
  border-radius: 6px;
  color: var(--cv-learning-text) !important;
  display: block;
  font-size: 13px;
  padding: 9px;
  text-decoration: none;
}

.cloudvod-learning-document .cloudvod-learning-user-menu > a:hover,
.cloudvod-learning-document .cloudvod-learning-user-menu > a:focus-visible {
  background: var(--cv-learning-surface-muted);
  color: var(--cv-learning-accent) !important;
  outline: none;
}

.cloudvod-learning-document .cloudvod-learn-main h2 {
  color: var(--cv-learning-text) !important;
  letter-spacing: 0 !important;
}

.cloudvod-learning-document .cloudvod-lesson {
  display: flow-root !important;
  flex: 0 0 auto !important;
  height: auto !important;
  min-width: 0;
}

.cloudvod-learning-document .cloudvod-player {
  margin: 0 auto;
  max-width: 1080px;
}

.cloudvod-learning-document .cloudvod-frame {
  aspect-ratio: 16 / 9;
  height: auto !important;
  padding-top: 0 !important;
}

.cloudvod-learning-document .cloudvod-lesson-body {
  color: var(--cv-learning-text) !important;
  max-width: 760px;
}

.cloudvod-learning-document .cloudvod-learning-drawer {
  display: none;
}

body.cloudvod-learning-document.cloudvod-learning-drawer-open {
  overflow: hidden !important;
}

@media (max-width: 782px) {
  .cloudvod-learning-document .cloudvod-learning-screen,
  .cloudvod-learning-document .cloudvod-learning-content,
  body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn {
    height: auto !important;
    min-height: 0 !important;
  }

  body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn {
    display: block !important;
    height: auto !important;
    overflow: visible !important;
    grid-template-columns: minmax(0, 1fr) !important;
  }

  body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn-sidebar {
    display: none !important;
  }

  .cloudvod-learning-document .cloudvod-learning-fold-button {
    display: none !important;
  }

  body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn-main {
    height: auto !important;
    min-height: 0 !important;
    overflow: visible !important;
    padding: 0 14px calc(32px + env(safe-area-inset-bottom)) !important;
  }

  .cloudvod-learning-document .cloudvod-learning-header {
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
  }

  .cloudvod-learning-document .cloudvod-learning-breadcrumb li {
    font-size: 12px;
  }

  .cloudvod-learning-document .cloudvod-learning-breadcrumb li + li::before {
    margin-left: 6px;
    margin-right: 6px;
  }

  .cloudvod-learning-document .cloudvod-learning-actions {
    gap: 2px;
  }

  .cloudvod-learning-document .cloudvod-learning-theme-toggle,
  .cloudvod-learning-document .cloudvod-learning-avatar-button {
    height: 36px;
    width: 36px;
  }

  .cloudvod-learning-document .cloudvod-learning-menu-button,
  .cloudvod-learning-document .cloudvod-learning-drawer-close {
    align-items: center;
    border: 1px solid var(--cv-learning-line);
    border-radius: 9px;
    display: inline-flex;
    font-size: 14px;
    justify-content: center;
    line-height: 1.2;
    min-height: 44px;
    padding: 8px 12px;
    text-decoration: none;
  }

  .cloudvod-learning-document .cloudvod-learning-drawer-close {
    background: transparent;
    color: var(--cv-learning-muted);
    cursor: pointer;
    font-size: 28px;
    line-height: 1;
    min-height: 38px;
    padding: 0;
    width: 38px;
  }

  .cloudvod-learning-document .cloudvod-learning-menu-button {
    background: var(--cv-learning-accent-soft);
    border-color: #b9dfcc;
    color: var(--cv-learning-accent);
    cursor: pointer;
    font-weight: 700;
  }

  .cloudvod-learning-document .cloudvod-learning-menu-icon {
    border-bottom: 2px solid currentColor;
    border-top: 2px solid currentColor;
    display: inline-block;
    height: 12px;
    margin-right: 7px;
    position: relative;
    width: 15px;
  }

  .cloudvod-learning-document .cloudvod-learning-menu-icon::after {
    border-top: 2px solid currentColor;
    content: '';
    left: 0;
    position: absolute;
    right: 0;
    top: 4px;
  }

  .cloudvod-learning-document .cloudvod-learning-drawer {
    display: block;
    inset: 0;
    position: fixed;
    z-index: 1000;
    visibility: hidden;
  }

  .cloudvod-learning-document .cloudvod-learning-drawer[hidden] {
    display: none;
  }

  .cloudvod-learning-document .cloudvod-learning-drawer.is-open {
    visibility: visible;
  }

  .cloudvod-learning-document .cloudvod-learning-drawer-backdrop {
    background: rgba(15, 23, 42, 0.42);
    inset: 0;
    position: absolute;
  }

  .cloudvod-learning-document .cloudvod-learning-drawer-panel {
    background: var(--cv-learning-surface);
    border-left: 1px solid var(--cv-learning-line);
    display: flex;
    flex-direction: column;
    height: 100%;
    max-width: 380px;
    margin-left: auto;
    padding: 16px 18px 18px 14px;
    position: relative;
    transform: translateX(110%);
    transition: transform .6s cubic-bezier(.28, .9, .34, .99);
    width: min(88vw, 380px);
  }

  .cloudvod-learning-document .cloudvod-learning-drawer.is-open .cloudvod-learning-drawer-panel {
    transform: translateX(0);
  }

  .cloudvod-learning-document .cloudvod-learning-drawer-head {
    align-items: center;
    display: flex;
    flex: 0 0 auto;
    justify-content: space-between;
    margin-bottom: 12px;
  }

  .cloudvod-learning-document .cloudvod-learning-drawer-close {
    border: 1px solid var(--cv-learning-line);
  }

  .cloudvod-learning-document .cloudvod-learning-drawer .cloudvod-learning-sidebar-scroll {
    padding-right: 4px;
  }
}

@media (max-width: 420px) {
  .cloudvod-learning-document .cloudvod-learn-main {
    padding-left: 10px !important;
    padding-right: 10px !important;
  }

  .cloudvod-learning-document .cloudvod-learning-menu-button {
    font-size: 13px;
    white-space: nowrap;
  }
}

body.dark-theme.cloudvod-learning-document {
  --cv-learning-bg: #111827;
  --cv-learning-surface: #182231;
  --cv-learning-surface-muted: #202d3d;
  --cv-learning-line: #334155;
  --cv-learning-text: #eef2f6;
  --cv-learning-muted: #aebccc;
  --cv-learning-accent: #77d7a8;
  --cv-learning-accent-soft: #173b2d;
  --cv-learning-scrollbar: #707985;
}

body.dark-theme.cloudvod-learning-document .cloudvod-learning-sidebar-scroll {
  scrollbar-color: var(--cv-learning-scrollbar) var(--cv-learning-scrollbar-track);
}

body.dark-theme.cloudvod-learning-document .cloudvod-learning-sidebar-scroll::-webkit-scrollbar-thumb {
  background: var(--cv-learning-scrollbar);
}

@media (prefers-reduced-motion: reduce) {
  .cloudvod-learning-document .cloudvod-learning-fold-icon,
  .cloudvod-learning-document .cloudvod-learning-drawer-panel {
    transition: none;
  }
}

.cloudvod-learning-document .screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

/* 播放页顶部跨整页，主区让播放器占满左侧可用空间。 */
body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn-main {
  padding: 0 !important;
}

@media (min-width: 783px) {
  body.cloudvod-learning-document.single-cv_lesson .cloudvod-learning-header {
    grid-column: 1 / -1 !important;
    grid-row: 1 !important;
  }

  body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn-sidebar {
    grid-column: 2 !important;
    grid-row: 2 !important;
    order: initial !important;
  }

  body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn-main {
    grid-column: 1 !important;
    grid-row: 2 !important;
    order: initial !important;
  }
}

.cloudvod-learning-document .cloudvod-learning-header {
  background: var(--cv-learning-surface);
  border-bottom: 1px solid var(--cv-learning-line);
  border-radius: 0;
  margin: 0 !important;
  max-width: none !important;
  min-height: 58px;
  padding: 10px clamp(16px, 2.4vw, 32px);
  width: 100% !important;
}

.cloudvod-learning-document .cloudvod-learning-menu-button {
  align-items: center;
  background: var(--cv-learning-surface-muted);
  border: 1px solid var(--cv-learning-line);
  border-radius: 8px;
  color: var(--cv-learning-accent);
  cursor: pointer;
  display: none;
  font-size: 13px;
  font-weight: 700;
  gap: 7px;
  justify-content: center;
  min-height: 38px;
  padding: 7px 10px;
  white-space: nowrap;
}

.cloudvod-learning-document .cloudvod-learning-breadcrumb {
  flex: 1 1 auto;
}

.cloudvod-learning-document .cloudvod-learning-actions {
  gap: 4px;
}

.cloudvod-learning-document .cloudvod-learning-sidebar-head {
  padding-bottom: 2px;
}

.cloudvod-learning-document .cloudvod-learning-sidebar-head h3,
.cloudvod-learning-document .cloudvod-learning-drawer-head strong {
  color: var(--cv-learning-text);
  font-size: 18px;
  line-height: 1.35;
  margin: 0 0 12px;
}

.cloudvod-learning-document .cloudvod-directory-navigation {
  align-items: center;
  display: grid;
  gap: 7px;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  margin: 0 0 12px;
  min-width: 0;
  white-space: nowrap;
  width: 100%;
}

.cloudvod-learning-document .cloudvod-directory-navigation-side {
  min-width: 0;
}

.cloudvod-learning-document .cloudvod-directory-navigation-side.is-next {
  text-align: right;
}

.cloudvod-learning-document .cloudvod-directory-navigation a {
  border-radius: 6px;
  color: var(--cv-learning-muted) !important;
  display: inline-block;
  font-size: 13px;
  max-width: 100%;
  overflow: hidden;
  padding: 4px 0;
  text-decoration: none;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cloudvod-learning-document .cloudvod-directory-navigation a:hover,
.cloudvod-learning-document .cloudvod-directory-navigation a:focus-visible {
  color: var(--cv-learning-accent) !important;
  outline: none;
}

.cloudvod-learning-document .cloudvod-directory-navigation .is-empty {
  display: inline-block;
  min-height: 24px;
  visibility: hidden;
  width: 1px;
}

.cloudvod-learning-document .cloudvod-directory-step {
  color: var(--cv-learning-text);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  line-height: 1.4;
  min-width: 48px;
  text-align: center;
  white-space: nowrap;
}

.cloudvod-learning-document .cloudvod-learning-drawer-meta {
  border-bottom: 1px solid var(--cv-learning-line);
  margin-bottom: 12px;
  padding: 0 0 12px;
}

.cloudvod-learning-document .cloudvod-learning-drawer-meta .cloudvod-directory-navigation {
  margin-bottom: 10px;
}

.cloudvod-learning-document .cloudvod-lesson,
.cloudvod-learning-document .cloudvod-player,
.cloudvod-learning-document .cloudvod-materials {
  margin-left: 0 !important;
  margin-right: 0 !important;
  max-width: none !important;
  width: 100% !important;
}

.cloudvod-learning-document .cloudvod-lesson {
  padding: 0 !important;
}

.cloudvod-learning-document .cloudvod-materials {
  margin-top: 24px;
  padding: 0 clamp(16px, 2.4vw, 32px);
}

.cloudvod-learning-document .cloudvod-player {
  padding: 0 !important;
}

/* 只保留外层目录滚动，避免 LMS 样式给内层目录再次开启滚动。 */
.cloudvod-learning-document .cloudvod-learning-sidebar-scroll {
  overflow-x: hidden !important;
  overflow-y: auto !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learning-sidebar-scroll .cloudvod-catalog {
  height: auto !important;
  max-height: none !important;
  overflow: visible !important;
  padding-right: 0 !important;
}

/* 桌面端让播放器填满顶栏以下的主区域，视频内容仍按原比例显示。 */
@media (min-width: 783px) {
  body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn-main {
    display: flex !important;
    flex-direction: column;
    overflow-y: auto !important;
  }

  .cloudvod-learning-document .cloudvod-learning-header {
    flex: 0 0 auto;
  }

  .cloudvod-learning-document .cloudvod-lesson {
    display: flex !important;
    flex: 1 0 auto !important;
    flex-direction: column;
    height: calc(100dvh - 61px) !important;
    min-height: calc(100dvh - 61px) !important;
  }

  .cloudvod-learning-document .cloudvod-player {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    min-height: 0;
  }

  .cloudvod-learning-document .cloudvod-frame {
    aspect-ratio: auto;
    flex: 1 1 auto;
    height: 100% !important;
    min-height: 0;
    padding-top: 0 !important;
    width: 100%;
  }

  .cloudvod-learning-document .cloudvod-frame video {
    object-fit: contain;
  }
}

@media (max-width: 782px) {
  body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn-main {
    padding: 0 0 env(safe-area-inset-bottom) !important;
  }

  .cloudvod-learning-document .cloudvod-learning-header {
    gap: 8px;
    min-height: 54px;
    padding: 8px 10px;
  }

  .cloudvod-learning-document .cloudvod-learning-menu-button {
    display: inline-flex;
    flex: 0 0 auto;
  }

  .cloudvod-learning-document .cloudvod-learning-breadcrumb ol {
    min-width: 0;
  }

  .cloudvod-learning-document .cloudvod-learning-breadcrumb li:nth-child(2),
  .cloudvod-learning-document .cloudvod-learning-breadcrumb li:nth-child(3),
  .cloudvod-learning-document .cloudvod-learning-breadcrumb li:nth-child(4) {
    min-width: 0;
  }

  .cloudvod-learning-document .cloudvod-learning-actions {
    flex: 0 0 auto;
  }

  .cloudvod-learning-document .cloudvod-learning-theme-toggle,
  .cloudvod-learning-document .cloudvod-learning-avatar-button {
    height: 36px;
    width: 36px;
  }

  .cloudvod-learning-document .cloudvod-lesson {
    padding-left: 0 !important;
    padding-right: 0 !important;
  }

  .cloudvod-learning-document .cloudvod-materials {
    padding-left: 10px;
    padding-right: 10px;
  }

  .cloudvod-learning-document .cloudvod-learning-drawer-panel {
    padding-left: 14px;
    padding-right: 18px;
  }
}

@media (max-width: 420px) {
  .cloudvod-learning-document .cloudvod-learning-menu-button {
    padding-left: 8px;
    padding-right: 8px;
  }

  .cloudvod-learning-document .cloudvod-learning-breadcrumb li {
    font-size: 11px;
  }

  .cloudvod-learning-document .cloudvod-directory-navigation a,
  .cloudvod-learning-document .cloudvod-directory-step {
    font-size: 12px;
  }
}

/* 沉浸式播放页的目录保持单层列表，不再把章节渲染成嵌套卡片。 */
body.cloudvod-learning-document.single-cv_lesson .cloudvod-learning-sidebar-scroll .cloudvod-catalog {
  background: transparent !important;
  display: block !important;
  gap: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learning-sidebar-scroll .cloudvod-section {
  background: transparent !important;
  border: 0 !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  margin: 0 !important;
  overflow: visible !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learning-sidebar-scroll .cloudvod-section + .cloudvod-section {
  border-top: 1px solid var(--cv-learning-line) !important;
  margin-top: 10px !important;
  padding-top: 10px !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learning-sidebar-scroll .cloudvod-section h3 {
  background: transparent !important;
  border: 0 !important;
  color: var(--cv-learning-text) !important;
  font-size: 13px !important;
  letter-spacing: 0 !important;
  padding: 4px 2px 8px !important;
  text-transform: none !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learning-sidebar-scroll .cloudvod-section ol {
  background: transparent !important;
  display: block !important;
  gap: 0 !important;
  padding: 0 !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learning-sidebar-scroll .cloudvod-section li {
  background: transparent !important;
  border: 0 !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  grid-template-columns: minmax(0, 1fr) !important;
  margin: 0 !important;
  min-height: 46px;
  padding: 9px 8px !important;
  transform: none !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learning-sidebar-scroll .cloudvod-section li + li {
  border-top: 1px solid var(--cv-learning-line) !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learning-sidebar-scroll .cloudvod-section li::before {
  display: none !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learning-sidebar-scroll .cloudvod-section li:hover {
  background: var(--cv-learning-surface-muted) !important;
  box-shadow: none !important;
}

body.cloudvod-learning-document.single-cv_lesson .cloudvod-learning-sidebar-scroll .cloudvod-section li.is-active {
  background: var(--cv-learning-accent-soft) !important;
  box-shadow: inset 3px 0 0 var(--cv-learning-accent) !important;
}

/* 沉浸式课时页没有课程购买栏，不需要沿用课程页的底部安全区。 */
body.cloudvod-learning-document.single-cv_lesson .cloudvod-learn {
  padding-bottom: 0 !important;
}