/* Reference-detail layout: visual shell only; playback and learning behavior stay in their existing modules. */
body:has(.detail-main.book-reference-detail-shell) .detail-hero-video-first.mobile-detail-player-section .media-card.is-audio-mode {
  background: #050605 !important;
}

body:has(.detail-main.book-reference-detail-shell) .detail-hero-video-first.mobile-detail-player-section .media-card.is-audio-mode .mobile-listen-player {
  background: transparent !important;
}

body:has(.detail-main.book-reference-detail-shell) .detail-hero-video-first .mobile-listen-player {
  isolation: isolate;
  position: relative;
}

body:has(.detail-main.book-reference-detail-shell) .detail-video-backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background: #10261a;
}

body:has(.detail-main.book-reference-detail-shell) .detail-video-backdrop::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgb(0 0 0 / 22%), rgb(0 0 0 / 52%));
  content: "";
}

body:has(.detail-main.book-reference-detail-shell) .detail-video-backdrop img,
body:has(.detail-main.book-reference-detail-shell) .detail-video-backdrop video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

body:has(.detail-main.book-reference-detail-shell) .detail-hero-video-first .mobile-listen-topbar,
body:has(.detail-main.book-reference-detail-shell) .detail-hero-video-first .media-stage,
body:has(.detail-main.book-reference-detail-shell) .detail-hero-video-first .detail-player {
  position: relative;
  z-index: 1;
}

body:has(.detail-main.book-reference-detail-shell) .reference-detail-tabs {
  display: flex;
  align-items: stretch;
  gap: 0;
  min-height: 52px;
  padding: 0 16px;
  border-top: 1px solid #edf0ea;
  border-bottom: 1px solid #edf0ea;
}

body:has(.detail-main.book-reference-detail-shell) .reference-detail-tab,
body:has(.detail-main.book-reference-detail-shell) .reference-detail-tabs .learning-entry {
  position: relative;
  min-width: 0;
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #737970;
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
}

body:has(.detail-main.book-reference-detail-shell) .reference-detail-tab.is-active {
  color: #183c27;
  font-weight: 850;
}

body:has(.detail-main.book-reference-detail-shell) .reference-detail-tab.is-active::after {
  position: absolute;
  right: 10px;
  bottom: -1px;
  left: 10px;
  height: 3px;
  background: #e4b90a;
  content: "";
}

body:has(.detail-main.book-reference-detail-shell) .reference-detail-tabs .learning-entry-grid {
  width: auto;
  min-height: 0;
  margin: 0;
  display: contents;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  overflow: visible;
}

body:has(.detail-main.book-reference-detail-shell) .reference-detail-tabs .learning-entry-grid::after,
body:has(.detail-main.book-reference-detail-shell) .reference-detail-tabs .learning-entry-icon,
body:has(.detail-main.book-reference-detail-shell) .reference-detail-tabs .learning-entry-arrow {
  display: none;
}

body:has(.detail-main.book-reference-detail-shell) .reference-detail-tabs .learning-entry {
  display: inline-flex;
  grid-template-columns: none;
  gap: 0;
  padding-inline: 12px;
  background: transparent;
}

body:has(.detail-main.book-reference-detail-shell) .reference-detail-tabs .learning-entry strong {
  display: block;
  font: inherit;
}

body:has(.detail-main.book-reference-detail-shell) .reference-benefits-section .detail-section-head {
  display: block;
  margin-bottom: 14px;
}

body:has(.detail-main.book-reference-detail-shell) .reference-benefits-section .detail-section-head h2 {
  margin: 0;
}

body:has(.detail-main.book-reference-detail-shell) .book-intro-copy {
  margin: 0;
  color: #576158;
  font-size: 15px;
  line-height: 1.8;
  white-space: pre-wrap;
}

body:has(.detail-main.book-reference-detail-shell) .reference-benefits-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

body:has(.detail-main.book-reference-detail-shell) .reference-benefits-list li {
  position: relative;
  padding-left: 22px;
  color: #576158;
  font-size: 15px;
  line-height: 1.7;
}

body:has(.detail-main.book-reference-detail-shell) .reference-benefits-list li::before {
  position: absolute;
  top: 0.62em;
  left: 2px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #e4b90a;
  box-shadow: 0 0 0 3px rgb(228 185 10 / 16%);
  content: "";
}

@media (max-width: 390px) {
  body:has(.detail-main.book-reference-detail-shell) .reference-detail-tabs {
    padding-inline: 8px;
  }

  body:has(.detail-main.book-reference-detail-shell) .reference-detail-tab,
  body:has(.detail-main.book-reference-detail-shell) .reference-detail-tabs .learning-entry {
    padding-inline: 8px;
    font-size: 14px;
  }
}

/* The reference page is a continuous reading surface: only the video keeps a framed media treatment. */
body:has(.detail-main.book-reference-detail-shell) {
  --qinghe-detail-shell: min(100%, 414px);
  background: #fff !important;
  color: #303030;
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

body:has(.detail-main.book-reference-detail-shell) .detail-main {
  padding: 0 0 calc(72px + env(safe-area-inset-bottom)) !important;
  background: #fff !important;
}

body:has(.detail-main.book-reference-detail-shell) .mobile-detail-player-section {
  height: clamp(262px, 72vw, 294px) !important;
  min-height: clamp(262px, 72vw, 294px) !important;
  margin: 12px auto 0 !important;
}

body:has(.detail-main.book-reference-detail-shell) .mobile-detail-player-section .media-card.is-audio-mode,
body:has(.detail-main.book-reference-detail-shell) .detail-hero-video-first.mobile-detail-player-section .media-card.is-audio-mode {
  height: clamp(262px, 72vw, 294px) !important;
  min-height: clamp(262px, 72vw, 294px) !important;
  overflow: hidden !important;
  border: 0 !important;
  border-radius: 10px !important;
  box-shadow: none !important;
}

body:has(.detail-main.book-reference-detail-shell) .mobile-detail-player-section .mobile-listen-player {
  min-height: 100% !important;
  padding: 10px 16px 12px !important;
  grid-template-rows: 38px 54px minmax(96px, 1fr) !important;
  row-gap: 6px !important;
}

body:has(.detail-main.book-reference-detail-shell) .detail-hero-video-first.mobile-detail-player-section .mobile-listen-player {
  background: transparent !important;
}

body:has(.detail-main.book-reference-detail-shell) .detail-info-panel {
  margin-top: 0 !important;
  padding: 0 !important;
  overflow: visible !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: #fff !important;
  box-shadow: none !important;
}

body:has(.detail-main.book-reference-detail-shell) .mobile-book-summary {
  min-height: 166px !important;
  margin: 12px 0 8px !important;
  grid-template-columns: 90px minmax(0, 1fr) !important;
  gap: 16px !important;
  padding: 22px 18px 18px !important;
  border: 1px solid #e7e9e5 !important;
  border-radius: 8px !important;
  background: #f1f2ef !important;
}

body:has(.detail-main.book-reference-detail-shell) .mobile-book-summary > img {
  width: 90px !important;
  height: 120px !important;
  border-radius: 2px !important;
  box-shadow: 0 5px 12px rgb(0 0 0 / 9%) !important;
}

body:has(.detail-main.book-reference-detail-shell) .mobile-book-summary h1 {
  color: #292929 !important;
  font-size: 22px !important;
  font-weight: 700 !important;
  line-height: 1.3 !important;
}

body:has(.detail-main.book-reference-detail-shell) .mobile-book-summary small {
  color: #777 !important;
  font-size: 14px !important;
  font-weight: 400 !important;
}

body:has(.detail-main.book-reference-detail-shell) .reference-detail-tabs {
  min-height: 56px !important;
  padding: 0 18px !important;
  border-top: 0 !important;
  border-bottom: 1px solid #ededed !important;
}

body:has(.detail-main.book-reference-detail-shell) .reference-detail-tab,
body:has(.detail-main.book-reference-detail-shell) .reference-detail-tabs .learning-entry {
  padding: 0 12px !important;
  color: #3f423f !important;
  font-size: 16px !important;
  font-weight: 400 !important;
}

body:has(.detail-main.book-reference-detail-shell) .reference-detail-tab.is-active {
  color: #252825 !important;
  font-weight: 600 !important;
}

body:has(.detail-main.book-reference-detail-shell) .reference-detail-tab.is-active::after {
  right: 12px !important;
  bottom: -1px !important;
  left: 12px !important;
  height: 3px !important;
  background: #f2c400 !important;
}

body:has(.detail-main.book-reference-detail-shell) .reference-detail-tabs .learning-entry {
  padding-inline: 12px !important;
  color: #3f423f !important;
}

body:has(.detail-main.book-reference-detail-shell) .detail-tabs-section {
  margin-top: 0 !important;
  padding: 0 18px 34px !important;
  background: #fff !important;
}

body:has(.detail-main.book-reference-detail-shell) .detail-section,
body:has(.detail-main.book-reference-detail-shell) .inline-related-panel {
  margin: 38px 0 0 !important;
  padding: 0 !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}

body:has(.detail-main.book-reference-detail-shell) .detail-section-head h2,
body:has(.detail-main.book-reference-detail-shell) .inline-related-panel h2 {
  color: #333 !important;
  font-size: 22px !important;
  font-weight: 500 !important;
  line-height: 1.35 !important;
}

body:has(.detail-main.book-reference-detail-shell) .reference-benefits-list {
  gap: 10px !important;
}

body:has(.detail-main.book-reference-detail-shell) .reference-benefits-list li {
  color: #606060 !important;
  font-size: 16px !important;
  line-height: 1.65 !important;
}

body:has(.detail-main.book-reference-detail-shell) .reference-benefits-list li::before {
  background: #f2c400 !important;
  box-shadow: 0 0 0 3px rgb(242 196 0 / 16%) !important;
}

body:has(.detail-main.book-reference-detail-shell) .mobile-related-rail {
  gap: 14px !important;
}

body:has(.detail-main.book-reference-detail-shell) .mobile-related-book {
  width: 112px !important;
  min-width: 112px !important;
  padding: 0 !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}

body:has(.detail-main.book-reference-detail-shell) .mobile-related-book img {
  border-radius: 2px !important;
}

/* Keep the established player controls while removing the unused lower area. */
body:has(.detail-main.book-reference-detail-shell) .mobile-detail-player-section {
  height: 270px !important;
  min-height: 270px !important;
  margin: 10px auto 12px !important;
}

body:has(.detail-main.book-reference-detail-shell) .mobile-detail-player-section .media-card.is-audio-mode,
body:has(.detail-main.book-reference-detail-shell) .detail-hero-video-first.mobile-detail-player-section .media-card.is-audio-mode {
  height: 270px !important;
  min-height: 270px !important;
}

body:has(.detail-main.book-reference-detail-shell) .detail-hero-video-first.mobile-detail-player-section .media-card.is-audio-mode .mobile-listen-player {
  height: 270px !important;
  min-height: 270px !important;
  padding: 12px 18px 16px !important;
  grid-template-rows: 44px 72px 82px !important;
  row-gap: 10px !important;
}

body:has(.detail-main.book-reference-detail-shell) .mobile-book-summary {
  min-height: 166px !important;
  margin: 12px 0 8px !important;
  padding: 22px 18px 18px !important;
  border: 1px solid #e7e9e5 !important;
  border-radius: 8px !important;
  background: #f1f2ef !important;
}

/* Restore the original standalone black audio player. */
body:has(.detail-main.book-reference-detail-shell) .mobile-detail-player-section {
  --book-player-control: #ffffff !important;
  --book-player-control-inverse: #050505 !important;
  --book-player-muted: rgb(255 255 255 / 66%) !important;
  --book-player-track: rgb(255 255 255 / 26%) !important;
  --book-player-border: rgb(255 255 255 / 42%) !important;
  --book-player-button-bg: rgb(0 0 0 / 50%) !important;
  --book-player-button-bg-active: rgb(255 255 255 / 12%) !important;
}

body:has(.detail-main.book-reference-detail-shell) .detail-hero-video-first.mobile-detail-player-section .media-card.is-audio-mode {
  background: #050605 !important;
  border: 0 !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

body:has(.detail-main.book-reference-detail-shell) .detail-hero-video-first.mobile-detail-player-section .media-card.is-audio-mode .mobile-listen-player {
  background: #050605 !important;
}

body:has(.detail-main.book-reference-detail-shell) .detail-video-backdrop {
  opacity: 0 !important;
}