:root{
  --ocv-gap: 16px;
  --ocv-radius: 12px;
  --ocv-border: rgba(0,0,0,.08);
  --ocv-surface: rgba(255,255,255,.75);
  --ocv-surface-strong: #fff;
  --ocv-muted: rgba(0,0,0,.04);
  --ocv-text: rgba(0,0,0,.88);
  --ocv-text-muted: rgba(0,0,0,.55);
  --ocv-link: #1e7be8;
  --ocv-primary: #1890ff;
  --ocv-primary-hover: #0e78d6;
  --ocv-backdrop: rgba(0,0,0,.55);
}

html.io-black-mode{
  --ocv-border: rgba(255,255,255,.10);
  --ocv-surface: rgba(15,15,15,.55);
  --ocv-surface-strong: rgba(18,18,18,.9);
  --ocv-muted: rgba(255,255,255,.06);
  --ocv-text: rgba(255,255,255,.88);
  --ocv-text-muted: rgba(255,255,255,.60);
  --ocv-link: #4ea1ff;
  --ocv-primary: #4ea1ff;
  --ocv-primary-hover: #2f8cff;
  --ocv-backdrop: rgba(0,0,0,.72);
}

.onenav-cloudvod{
  width: 100%;
}

.onenav-cloudvod-wrap{
  width: 100%;
}

.ocv-page-title{
  font-size: 18px;
  font-weight: 700;
  color: var(--ocv-text);
  margin: 6px 0 12px;
}

.ocv-home{
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.ocv-section{
  padding: 0;
}

.ocv-section-head{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 4px 0 10px;
}

.ocv-section-title{
  font-size: 15px;
  font-weight: 800;
  color: var(--ocv-text);
}

.ocv-section-more{
  font-size: 12px;
  color: var(--ocv-text-muted);
  text-decoration: none;
  white-space: nowrap;
}

.ocv-section-more:hover{
  color: var(--ocv-link);
}

.onenav-cloudvod-grid{
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--ocv-gap);
}

.ocv-grid-compact{
  --ocv-gap: 12px;
}

.ocv-card{
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--ocv-radius);
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface);
  text-decoration: none;
  color: var(--ocv-text);
  backdrop-filter: blur(10px);
}

.ocv-thumb{
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--ocv-muted);
}

.ocv-thumb.ocv-thumb-empty{
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--ocv-muted);
}

.ocv-card-body{
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 6px;
  padding: 10px 12px;
}

.ocv-card-title{
  font-size: 14px;
  font-weight: 650;
  line-height: 1.4;
  color: var(--ocv-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.ocv-card-badges{
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.ocv-badge{
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--ocv-muted);
  color: var(--ocv-text);
  flex: 0 0 auto;
}

.ocv-badge-free{
  background: rgba(255, 77, 79, .14);
  color: rgba(255, 77, 79, .95);
}

html.io-black-mode .ocv-badge-free{
  background: rgba(255, 77, 79, .22);
  color: rgba(255, 140, 142, .98);
}

.ocv-badge-price{
  background: rgba(255, 77, 79, .14);
  color: rgba(255, 77, 79, .95);
}

html.io-black-mode .ocv-badge-price{
  background: rgba(255, 77, 79, .22);
  color: rgba(255, 140, 142, .98);
}

.ocv-badge-vip{
  background: rgba(114, 46, 209, .16);
  color: #722ed1;
}

html.io-black-mode .ocv-badge-vip{
  background: rgba(170, 120, 255, .22);
  color: rgba(220, 200, 255, .95);
}

.ocv-badge-login{
  background: rgba(0, 115, 170, 0.12);
  color: var(--ocv-link);
}

.ocv-badge-learners{
  background: rgba(0, 0, 0, .05);
  color: var(--ocv-text-muted);
}

html.io-black-mode .ocv-badge-learners{
  background: rgba(255, 255, 255, .08);
  color: var(--ocv-text-muted);
}

.ocv-player{
  border-radius: var(--ocv-radius);
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface);
  padding: 12px;
  backdrop-filter: blur(10px);
}

.ocv-player-title{
  font-size: 18px;
  font-weight: 750;
  color: var(--ocv-text);
  margin-bottom: 10px;
}

.ocv-player-box{
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: #000;
  aspect-ratio: 16 / 9;
}

.ocv-video,
.ocv-iframe{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.ocv-overlay{
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ocv-backdrop);
  padding: 16px;
}

.ocv-overlay-inner{
  width: min(520px, 100%);
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.35);
  color: #fff;
  padding: 16px;
  backdrop-filter: blur(12px);
}

.ocv-overlay-title{
  font-size: 16px;
  font-weight: 750;
  margin-bottom: 6px;
}

.ocv-overlay-desc{
  font-size: 13px;
  opacity: .92;
  margin-bottom: 12px;
}

.ocv-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 14px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 650;
}

.ocv-btn-primary{
  background: var(--ocv-primary);
  color: #fff;
}

.ocv-btn-primary:hover{
  background: var(--ocv-primary-hover);
  color: #fff;
}

.ocv-btn-secondary{
  background: rgba(0, 0, 0, .06);
  color: var(--ocv-text);
  border: 1px solid var(--ocv-border);
}

html.io-black-mode .ocv-btn-secondary{
  background: rgba(255, 255, 255, .08);
}

.ocv-btn-secondary:hover{
  border-color: rgba(0, 115, 170, 0.25);
  color: var(--ocv-link);
}

.ocv-player-actions{
  margin-top: 10px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.ocv-clean{
  margin: 0;
  background: #000;
}

.ocv-clean-main{
  min-height: 100vh;
  display: flex;
}

.ocv-clean .ocv-player{
  width: 100%;
  margin: 0;
}

.ocv-clean .ocv-player-title{
  display: none;
}

.ocv-clean .ocv-player-actions{
  display: none;
}

.ocv-clean .ocv-player-box{
  border-radius: 0;
  border: 0;
  background: #000;
}

.ocv-clean .ocv-iframe,
.ocv-clean .ocv-video{
  width: 100%;
  height: 100vh;
  border-radius: 0;
}

.ocv-content{
  margin-top: 14px;
  padding: 14px;
  border-radius: var(--ocv-radius);
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface);
  color: var(--ocv-text);
  backdrop-filter: blur(10px);
}

.ocv-breadcrumb{
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 12px;
  color: var(--ocv-text-muted);
  margin: 4px 0 10px;
}

.ocv-breadcrumb a{
  color: var(--ocv-text-muted);
  text-decoration: none;
}

.ocv-breadcrumb a:hover{
  color: var(--ocv-link);
}

.ocv-breadcrumb .sep{
  opacity: .6;
}

.ocv-breadcrumb .current{
  color: var(--ocv-text);
  opacity: .85;
}

.ocv-course-hero{
  display: grid;
  grid-template-columns: 380px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  margin: 8px 0 14px;
}

.ocv-course-cover{
  position: relative;
  border-radius: var(--ocv-radius);
  overflow: hidden;
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface);
}

.ocv-course-cover-img{
  width: 100%;
  aspect-ratio: 16 / 9;
  background-size: cover;
  background-position: center;
  background-color: var(--ocv-muted);
}

.ocv-course-cover-btn{
  position: absolute;
  left: 12px;
  bottom: 12px;
  height: 34px;
  padding: 0 14px;
  border-radius: 10px;
  background: var(--ocv-primary);
  color: #fff;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.ocv-course-cover-btn:hover{
  background: var(--ocv-primary-hover);
  color: #fff;
}

.ocv-course-info{
  border-radius: var(--ocv-radius);
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface);
  padding: 14px;
  backdrop-filter: blur(10px);
}

.ocv-course-actionbar{
  border-radius: var(--ocv-radius);
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface-strong);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 14px;
}

.ocv-course-action-left{
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.ocv-price-free,
.ocv-price-pay{
  font-size: 22px;
  font-weight: 900;
  color: rgba(255, 77, 79, .98);
}

.ocv-price-original{
  font-size: 12px;
  color: var(--ocv-text-muted);
  font-weight: 700;
  text-decoration: line-through;
}

.ocv-price-discount{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 800;
  color: rgba(255, 77, 79, .98);
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid rgba(255, 77, 79, .28);
  background: rgba(255, 77, 79, .08);
}

.ocv-price-discount .ocv-discount-price{
  font-weight: 900;
}

.ocv-price-discount .ocv-discount-save{
  color: #fa8c16;
  font-weight: 900;
}

.ocv-start-btn{
  height: 38px;
  padding: 0 18px;
  border-radius: 999px;
  background: #ff4d4f;
  color: #fff;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

.ocv-start-btn:hover{
  color: #fff;
  filter: brightness(0.95);
}

.ocv-side-meta{
  padding: 10px 14px 0;
  display: grid;
  gap: 6px;
  color: var(--ocv-text-muted);
  font-size: 12px;
}

.ocv-side-meta-item{
  line-height: 1.4;
}

.ocv-note{
  margin-top: 14px;
  padding: 12px;
  border-radius: var(--ocv-radius);
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface);
}

.ocv-note-head{
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}

.ocv-note-title{
  font-weight: 900;
  color: var(--ocv-text);
}

.ocv-note-tip{
  font-size: 12px;
  color: var(--ocv-text-muted);
}

.ocv-note-text{
  width: 100%;
  min-height: 140px;
  resize: vertical;
  padding: 10px;
  border-radius: 12px;
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface-strong);
  color: var(--ocv-text);
  outline: none;
}

.ocv-note-text:focus{
  border-color: rgba(255, 77, 79, .45);
}

.ocv-note-status{
  margin-top: 8px;
  font-size: 12px;
  color: var(--ocv-text-muted);
}

.ocv-note-badge{
  margin-left: 6px;
  padding: 2px 6px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  color: #fa8c16;
  border: 1px solid rgba(250, 140, 22, .35);
  background: rgba(250, 140, 22, .12);
}

.ocv-acc-no{
  min-width: 44px;
  font-size: 12px;
  font-weight: 900;
  color: var(--ocv-text-muted);
}

.ocv-course-catalog-block{
  margin-top: 14px;
  border-radius: var(--ocv-radius);
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface);
  padding: 12px;
  backdrop-filter: blur(10px);
}

.ocv-block-title{
  font-size: 14px;
  font-weight: 900;
  color: var(--ocv-text);
  margin: 2px 0 10px;
}

.ocv-course-title{
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 800;
  color: var(--ocv-text);
  line-height: 1.35;
}

.ocv-course-meta{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12px;
  color: var(--ocv-text-muted);
  margin-bottom: 10px;
}

.ocv-course-badges{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ocv-course-tags{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.ocv-tag{
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface-strong);
  color: var(--ocv-text-muted);
  font-size: 12px;
}

.ocv-course-main{
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 16px;
  align-items: start;
}

.ocv-course-player{
  margin-bottom: 14px;
}

.ocv-tabs{
  border-radius: var(--ocv-radius);
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface);
  backdrop-filter: blur(10px);
  overflow: hidden;
}

.ocv-tab-head{
  display: flex;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--ocv-border);
  flex-wrap: wrap;
}

.ocv-tab-btn{
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface-strong);
  color: var(--ocv-text);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.ocv-tab-btn.is-active{
  background: rgba(0, 115, 170, 0.12);
  border-color: var(--ocv-link);
  color: var(--ocv-link);
  box-shadow: inset 0 0 0 1px var(--ocv-link);
}

.ocv-tab-body{
  padding: 0;
}

.ocv-tab-panel{
  display: none;
}

.ocv-tab-panel.is-active{
  display: block;
}

.ocv-empty{
  padding: 14px;
  color: var(--ocv-text-muted);
}

.ocv-side-box{
  border-radius: var(--ocv-radius);
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface);
  padding: 12px;
  backdrop-filter: blur(10px);
}

.ocv-side-title{
  font-size: 14px;
  font-weight: 800;
  color: var(--ocv-text);
  margin-bottom: 10px;
}

.ocv-side-list{
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ocv-side-item{
  display: flex;
  gap: 10px;
  align-items: center;
  text-decoration: none;
  color: var(--ocv-text);
}

.ocv-side-thumb{
  width: 86px;
  height: 48px;
  border-radius: 8px;
  object-fit: cover;
  background: var(--ocv-muted);
  flex: 0 0 auto;
}

.ocv-side-thumb.ocv-side-thumb-empty{
  display: inline-block;
}

.ocv-side-text{
  font-size: 13px;
  line-height: 1.35;
  color: var(--ocv-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.ocv-catalog{
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ocv-catalog-chapter-title{
  font-size: 12px;
  font-weight: 800;
  color: var(--ocv-text);
  opacity: .9;
  margin-bottom: 6px;
}

.ocv-catalog-items{
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ocv-catalog-section{
  margin-top: 6px;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 900;
  color: var(--ocv-text-muted);
  border-left: 3px solid rgba(0, 115, 170, .35);
  background: rgba(0, 0, 0, .03);
  border-radius: 10px;
}

html.io-black-mode .ocv-catalog-section{
  background: rgba(255, 255, 255, .06);
}

.ocv-catalog-item{
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface-strong);
  color: var(--ocv-text);
  text-decoration: none;
}

.ocv-catalog-item:hover{
  border-color: rgba(0, 115, 170, 0.25);
}

.ocv-catalog-item.is-active{
  background: rgba(0, 115, 170, 0.12);
  border-color: var(--ocv-link);
  color: var(--ocv-link);
  box-shadow: inset 0 0 0 1px var(--ocv-link);
}

.ocv-catalog-dot{
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(0,0,0,.20);
  flex: 0 0 auto;
}

html.io-black-mode .ocv-catalog-dot{
  background: rgba(255,255,255,.25);
}

.ocv-catalog-item.is-active .ocv-catalog-dot{
  background: var(--ocv-link);
}

.ocv-catalog-text{
  min-width: 0;
  flex: 1 1 auto;
  font-size: 13px;
  line-height: 1.35;
  color: inherit;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.ocv-catalog-badge{
  flex: 0 0 auto;
}

.ocv-catalog-accordion{
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ocv-acc{
  border-radius: 12px;
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface-strong);
  overflow: hidden;
}

.ocv-acc-summary{
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  cursor: pointer;
  user-select: none;
  color: var(--ocv-text);
}

.ocv-acc-summary::-webkit-details-marker{
  display: none;
}

.ocv-acc-title{
  font-size: 13px;
  font-weight: 900;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ocv-acc-count{
  font-size: 12px;
  color: var(--ocv-text-muted);
  white-space: nowrap;
}

.ocv-acc-body{
  padding: 6px 10px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ocv-acc-section{
  margin-top: 6px;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 900;
  color: var(--ocv-text-muted);
  border-left: 3px solid rgba(0, 115, 170, .35);
  background: rgba(0, 0, 0, .03);
  border-radius: 10px;
}

html.io-black-mode .ocv-acc-section{
  background: rgba(255, 255, 255, .06);
}

.ocv-acc-item{
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--ocv-border);
  background: var(--ocv-surface);
  color: var(--ocv-text);
  text-decoration: none;
}

.ocv-acc-item:hover{
  border-color: rgba(0, 115, 170, 0.25);
}

.ocv-acc-item.is-active{
  background: rgba(0, 115, 170, 0.12);
  border-color: var(--ocv-link);
  color: var(--ocv-link);
  box-shadow: inset 0 0 0 1px var(--ocv-link);
}

.ocv-acc-dot{
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(0,0,0,.20);
  flex: 0 0 auto;
}

html.io-black-mode .ocv-acc-dot{
  background: rgba(255,255,255,.25);
}

.ocv-acc-item.is-active .ocv-acc-dot{
  background: var(--ocv-link);
}

.ocv-acc-text{
  min-width: 0;
  flex: 1 1 auto;
  font-size: 13px;
  line-height: 1.35;
  color: inherit;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.ocv-acc-badge{
  flex: 0 0 auto;
}

.ocv-play-grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 16px;
  align-items: start;
}

.ocv-play-side{
  position: sticky;
  top: 84px;
  align-self: start;
}

.ocv-side-box-catalog{
  max-height: calc(100vh - 140px);
  overflow: auto;
}

.ocv-pagination{
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 12px 0;
}

.ocv-page a,
.ocv-page span{
  display: inline-block;
  padding: 6px 10px;
  border: 1px solid var(--ocv-border);
  border-radius: 8px;
  text-decoration: none;
  color: var(--ocv-text);
  background: var(--ocv-surface);
}

.ocv-page .page-numbers.current{
  background: rgba(0, 115, 170, 0.12);
  border-color: var(--ocv-link);
  color: var(--ocv-link);
  box-shadow: inset 0 0 0 1px var(--ocv-link);
}

.onenav-cloudvod-empty{
  padding: 18px 0;
  color: var(--ocv-text-muted);
}

@media (max-width: 1199px){
  .onenav-cloudvod-grid{ grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .ocv-course-main{ grid-template-columns: minmax(0, 1fr) 300px; }
  .ocv-play-grid{ grid-template-columns: minmax(0, 1fr) 320px; }
}

@media (max-width: 991px){
  .onenav-cloudvod-grid{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .ocv-course-hero{ grid-template-columns: 1fr; }
  .ocv-course-main{ grid-template-columns: 1fr; }
  .ocv-play-grid{ grid-template-columns: 1fr; }
  .ocv-play-side{ position: static; }
  .ocv-side-box-catalog{ max-height: none; }
  .ocv-course-actionbar{ flex-direction: column; align-items: stretch; }
  .ocv-start-btn{ width: 100%; justify-content: center; }
}

@media (max-width: 575px){
  .onenav-cloudvod-grid{ grid-template-columns: 1fr; }
  .ocv-player{ padding: 10px; }
  .ocv-player-title{ font-size: 16px; }
  .ocv-course-title{ font-size: 18px; }
}