/* 基础样式 - 一体化设计 */
.video-info-container {
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  overflow: hidden;
  margin: 20px 0;
  height: 423px;
}

.video-info-header {
  display: flex;
  padding: 20px;
  gap: 20px;
}

.article-title-section {
  margin-bottom: 20px;
  text-align: center;
}

.article-title {
  font-size: 28px;
  font-weight: 700;
  color: #222;
  margin: 0;
  line-height: 1.3;
  text-align: center;
}

.article-title a {
  color: inherit;
  text-decoration: none;
}

.article-title a:hover {
  color: #578bff;
  text-decoration: none;
}

.title-divider {
  width: 80px;
  height: 3px;
  background: linear-gradient(135deg, #578bff, #4a6cf7);
  margin: 15px auto 0;
  border-radius: 2px;
  box-shadow: 0 2px 8px rgba(87, 139, 255, 0.3);
}

.video-player-section {
  flex: 0 0 680px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  background: #000;
  position: relative;
}

.ceo-video-s {
  width: 100% !important;
  height: auto !important;
  aspect-ratio: 16 / 9 !important;
  position: relative !important;
  overflow: hidden !important;
  background: #000 !important;
  padding: 0 !important;
  margin: 0 !important;
  border: none !important;
  display: block !important;
}

@supports not (aspect-ratio: 16 / 9) {
  .ceo-video-s {
    height: calc(56.25vw) !important;
  }
}

.ceo-video-s,
.ceo-video-s > div,
.ceo-video-s video,
.ceo-video-s iframe,
.ceo-video-s object,
.ceo-video-s embed {
  box-sizing: border-box !important;
  max-width: 100% !important;
  max-height: 100% !important;
  min-width: 100% !important;
  min-height: 100% !important;
}

.ceo-video-s video {
  width: 100% !important;
  height: 100% !important;
  object-fit: contain !important;
  object-position: center !important;
}

.video-player-section {
  width: 100% !important;
  max-width: 680px !important;
  margin: 0 auto !important;
  padding: 0 !important;
  overflow: hidden !important;
}

.ceo-video-s > *,
.ceo-video-s .video-js,
.ceo-video-s .dplayer,
.ceo-video-s video,
.ceo-video-s iframe,
.ceo-video-s object,
.ceo-video-s embed,
.ceo-video-s #ckplayer_container {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  display: block !important;
  object-fit: contain !important;
  background: #000 !important;
  border: none !important;
  overflow: hidden !important;
  transform: none !important;
}

.ceo-video-s video {
  object-fit: contain !important;
  object-position: center !important;
}

.ceo-video-s > div,
.ceo-video-s .video-js,
.ceo-video-s .dplayer,
.ceo-video-s iframe,
.ceo-video-s object,
.ceo-video-s embed,
.ceo-video-s #ckplayer_container {
  object-position: top center !important;
  top: 0 !important;
  margin-top: 0 !important;
  padding-top: 0 !important;
}

.ceo-video-s > div {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  overflow: hidden !important;
  margin: 0 !important;
  padding: 0 !important;
}

.ceo-video-s [style] {
  max-width: 100% !important;
  max-height: 100% !important;
  min-width: 100% !important;
  min-height: 100% !important;
  width: 100% !important;
  height: 100% !important;
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
}

.ceo-video-s > div,
.ceo-video-s .video-js,
.ceo-video-s .dplayer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.ceo-video-s .ceo-video-pay,
.ceo-video-s .ceo-video-hide {
  position: absolute;
  z-index: 999;
  text-align: center;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) scale(1);
  -webkit-transform: translate(-50%, -50%) scale(1);
  width: auto;
  height: auto;
}

.ceo-video-s .ceo-video-background {
  background-position: top center !important;
  background-repeat: no-repeat !important;
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;
  top: 0 !important;
  bottom: 0 !important;
  left: 0 !important;
  right: 0 !important;
}

.ceo-video-logobox {
  position: absolute;
  top: 15px;
  left: 15px;
  z-index: 100;
}

.ceo-video-logo img {
  max-height: 40px;
  width: auto;
  opacity: 0.8;
}

.video-update-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  z-index: 100;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 4px;
}

.video-update-badge i {
  font-size: 11px;
}

.course-tags {
  margin-bottom: 15px;
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.tags-left {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  flex: 1;
}

.tags-right {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-end;
  margin-left: 20px;
  flex-shrink: 0;
}

:root {
  --primary-color: #896cff;
  --primary-light: #f2f5ff;
  --primary-border: #c4b6ff;
  --secondary-bg: #f8f9fa;
  --secondary-border: #e9ecef;
  --text-muted: #6c757d;
  --text-dark: #495057;
  --text-light: #777;
  --success-color: #28a745;
  --warning-color: #ff9500;
  --vip-color: #6f42c1;
  --transition: all 0.3s ease;
  --border-radius-sm: 4px;
  --border-radius-md: 6px;
  --border-radius-lg: 20px;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.1);
}

.tag-certified {
  display: inline-block;
  padding: 4px 8px;
  font-size: 12px;
  line-height: 1.4;
  border-radius: var(--border-radius-sm);
  background: var(--primary-light);
  border: 1px solid var(--primary-border);
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
  white-space: nowrap;
}

.tag-certified a {
  color: inherit;
  text-decoration: none;
}

.tag-certified:hover {
  background: #e8f0fe;
  border-color: #a8b5ff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.course-info-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 0 10px;
  height: 100%;
}

.course-info-scroll {
  flex: 1;
  overflow-y: auto;
}

.ceo-single-jieshao {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.6;
}

.course-recommend-section {
  margin: 15px 0 0;
}

.course-recommend-container {
  border-radius: var(--border-radius-md);
  text-align: center;
  transition: var(--transition);
  max-height: 120px;
  overflow: hidden;
}

.course-recommend-container:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.course-recommend-link {
  display: block;
  text-decoration: none;
  height: 100px;
  overflow: hidden;
}

.course-recommend-image {
  max-width: 100%;
  max-height: 100px;
  width: auto;
  height: auto;
  object-fit: cover;
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-sm);
}

.course-recommend-code {
  width: 100%;
  max-height: 100px;
  overflow: hidden;
}

.course-recommend-default {
  display: flex;
  align-items: center;
  justify-content: center;
}

.recommend-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
  font-size: 12px;
}

.recommend-placeholder i {
  font-size: 20px;
  opacity: 0.7;
  color: #578bff;
}

.recommend-placeholder span {
  font-weight: 600;
  color: var(--text-dark);
  font-size: 13px;
}

.recommend-placeholder small {
  font-size: 10px;
  color: var(--text-muted);
  font-style: italic;
}

.course-conversion-box {
  margin: 10px 0 4px;
  background: linear-gradient(135deg, #f8fbff 0%, #f5f8ff 100%);
  border: 1px solid #dce7ff;
  border-radius: 8px;
  padding: 8px;
  box-sizing: border-box;
}

.course-conversion-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 6px;
}

.course-conversion-item {
  background: #fff;
  border: 1px solid #e8efff;
  border-radius: 10px;
  padding: 9px 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: #2f3b52;
  font-size: 12px;
  font-weight: 600;
}

.course-conversion-item i {
  color: #4f7cff;
  font-size: 14px;
}

a.course-conversion-item {
  text-decoration: none;
  color: inherit;
}

a.course-conversion-item:hover {
  border-color: #cdddfc;
}

#course-qa-modal .ceo-modal-dialog {
  width: 720px;
  max-width: calc(100% - 24px);
  max-height: 80vh;
  overflow: auto;
}

.course-faq-list {
  display: grid;
  gap: 6px;
}

.course-faq-item {
  background: rgba(255,255,255,.85);
  border: 1px solid #e8efff;
  border-radius: 8px;
  padding: 7px 10px;
  font-size: 12px;
  color: #55627a;
  line-height: 1.45;
}

.post-pay-guide {
  box-sizing: border-box;
}

.post-pay-guide-title {
  margin: 0 0 6px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: #39568f;
  font-weight: 600;
  font-size: 13px;
}

.post-pay-guide-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.post-pay-guide-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid #cdddfc;
  background: #fff;
  color: #39568f;
  text-decoration: none;
  font-size: 12px;
  font-weight: 600;
}

.video-directory-container {
  margin-top: 20px;
}

.course-status-container {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: auto;
  padding-top: 10px;
  flex-wrap: nowrap;
  justify-content: space-between;
}

.status-badge {
  padding: 8px 16px;
  border-radius: var(--border-radius-lg);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
}

.status-badge.updating {
  background: linear-gradient(135deg, #fff8e6, #ffedcc);
  color: var(--warning-color);
  box-shadow: 0 2px 8px rgba(255, 149, 0, 0.1);
}

.status-badge.updating::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warning-color);
  margin-right: 8px;
  animation: pulse 1.5s infinite;
}

.status-badge.purchased {
  background: linear-gradient(135deg, #e8f5e8, #d4edda);
  color: var(--success-color);
  box-shadow: 0 2px 8px rgba(40, 167, 69, 0.1);
}

.status-badge.purchased::before {
  content: "✓";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success-color);
  color: white;
  margin-right: 8px;
  font-size: 10px;
  line-height: 8px;
  text-align: center;
}

.status-badge.vip {
  background: linear-gradient(135deg, #f3e8ff, #e9d8fd);
  color: var(--vip-color);
  box-shadow: 0 2px 8px rgba(111, 66, 193, 0.1);
}

.status-badge.vip::before {
  content: "★";
  display: inline-block;
  margin-right: 8px;
  font-size: 12px;
  color: inherit;
}

@keyframes pulse {
  0% { opacity: 1; }
  50% { opacity: 0.3; }
  100% { opacity: 1; }
}

.action-buttons {
  display: flex;
  gap: 10px;
  margin-left: auto;
  min-width: 240px;
  justify-content: flex-end;
}

.purchase-button, .preview-button-small, .purchase-button.purchase-button-red, .purchase-button.purchase-button-green {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 10px 20px !important;
  font-size: 15px !important;
  font-weight: 600 !important;
  line-height: 1.4 !important;
  border-radius: var(--border-radius-md) !important;
  text-decoration: none !important;
  transition: var(--transition) !important;
  cursor: pointer !important;
  border: none !important;
  min-width: 150px !important;
  height: 60px !important;
  position: relative !important;
  overflow: hidden !important;
  user-select: none !important;
  white-space: nowrap !important;
  box-sizing: border-box !important;
}

.purchase-button {
  background: linear-gradient(135deg, #578bff, #4a6cf7);
  color: white;
  box-shadow: 0 2px 8px rgba(87, 139, 255, 0.3);
}

.purchase-button:hover {
  background: linear-gradient(135deg, #4a6cf7, #3a5ed8);
  box-shadow: 0 4px 12px rgba(87, 139, 255, 0.4);
  transform: translateY(-1px);
}

.purchase-button-red {
  background: linear-gradient(135deg, #ff5757, #f74a4a);
  color: white;
  box-shadow: 0 2px 8px rgba(255, 87, 87, 0.3);
}

.purchase-button-red:hover {
  background: linear-gradient(135deg, #f74a4a, #d83a3a);
  box-shadow: 0 4px 12px rgba(255, 87, 87, 0.4);
  transform: translateY(-1px);
}

.purchase-button-green {
  background: linear-gradient(135deg, #4CAF50, #45a049);
  color: white;
  box-shadow: 0 2px 8px rgba(76, 175, 80, 0.3);
}

.purchase-button-green:hover {
  background: linear-gradient(135deg, #45a049, #3d8b40);
  box-shadow: 0 4px 12px rgba(76, 175, 80, 0.4);
  transform: translateY(-1px);
}

.purchase-button:active {
  transform: translateY(0);
}

.preview-button-small {
  background: #ff9500;
  color: white;
  border: 1px solid #ff9500;
}

.preview-button-small:hover {
  background: #ff8c00;
  border-color: #ff8c00;
  color: white;
  box-shadow: 0 4px 12px rgba(255, 149, 0, 0.3);
  transform: translateY(-2px);
}

.purchase-button::before, .preview-button-small::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.purchase-button:active::before, .preview-button-small:active::before {
  width: 300px;
  height: 300px;
}

@media screen and (max-width: 1024px) {
  .video-info-container {
    height: auto !important;
  }
  .video-info-header {
    flex-direction: column;
    gap: 15px;
  }

  .video-player-section {
    flex: 0 0 100%;
    width: 100%;
  }

  .course-info-section {
    flex: 1;
    width: 100%;
  }
}

@media screen and (max-width: 768px) {
  .ceo-video-s {
    width: 100% !important;
    height: auto !important;
    aspect-ratio: 16 / 9;
    max-height: calc(100vw * 9 / 16) !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  @supports not (aspect-ratio: 16 / 9) {
    .ceo-video-s {
      height: calc(100vw * 9 / 16) !important;
    }
  }

  .ceo-video-s > *,
  .ceo-video-s video,
  .ceo-video-s iframe,
  .ceo-video-s .video-js,
  .ceo-video-s .dplayer {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
  }

  .ceo-video-s > div {
    width: 100% !important;
    height: 100% !important;
    overflow: hidden !important;
  }

  .ceo-video-s .video-js .vjs-control-bar,
  .ceo-video-s .dplayer .dplayer-controlbar {
    display: flex !important;
    opacity: 1 !important;
  }

  .ceo-video-s .ceo-video-pay,
  .ceo-video-s .ceo-video-hide {
    -webkit-transform: translate(-50%, -50%) !important;
            transform: translate(-50%, -50%) !important;
    width: 90%;
    max-width: 300px;
  }

  .ceo-video-s .ceo-video-pay *, .ceo-video-s .ceo-video-hide * {
    margin-left: auto !important;
    margin-right: auto !important;
    text-align: center !important;
  }

  @supports (-webkit-touch-callout: none) {
    .ceo-video-s {
      -webkit-overflow-scrolling: touch !important;
    }

    .ceo-video-s .ceo-video-pay,
    .ceo-video-s .ceo-video-hide {
      -webkit-box-align: center !important;
      -webkit-box-pack: center !important;
      -webkit-backface-visibility: hidden !important;
      backface-visibility: hidden !important;
    }
  }

  .ceo-video-logobox {
    top: 10px;
    left: 10px;
  }

  .ceo-video-logo img {
    max-width: 60px !important;
    max-height: 30px !important;
  }

  .video-update-badge {
    top: 10px;
    right: 10px;
    font-size: 11px;
    padding: 4px 8px;
    gap: 3px;
  }

  .video-update-badge i {
    font-size: 10px;
  }

  .course-recommend-section {
    margin: 10px 0;
  }

  .course-conversion-grid {
    grid-template-columns: 1fr;
  }
  .post-pay-guide-links {
    grid-template-columns: 1fr;
  }

  .course-recommend-container {
    padding: 8px;
    max-height: 100px;
  }

  .course-recommend-link {
    height: 80px;
  }

  .course-ad-image {
    max-height: 80px;
  }

  .course-ad-default {
    height: 60px;
    padding: 8px;
  }

  .ad-placeholder {
    gap: 2px;
    font-size: 11px;
  }

  .ad-placeholder i {
    font-size: 16px;
  }

  .ad-placeholder span {
    font-size: 12px;
  }

  .ad-placeholder small {
    font-size: 9px;
  }

  .course-status-container {
    flex-direction: column;
    align-items: stretch;
    gap: 15px;
  }

  .status-info {
    align-items: center;
    text-align: center;
  }

  .action-buttons {
    width: 100%;
    display: flex;
    flex-direction: row;
    gap: 10px;
    justify-content: stretch;
    min-width: auto;
  }

  @media (max-width: 400px) {
    .action-buttons {
      flex-direction: column;
    }
  }

  .purchase-button, .preview-button-small, .purchase-button.purchase-button-red, .purchase-button.purchase-button-green {
    flex: 1 !important;
    padding: 12px 16px !important;
    font-size: 14px !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    text-align: center !important;
    min-height: 48px !important;
    width: 100% !important;
    letter-spacing: 0.2px !important;
    box-sizing: border-box !important;
  }
}

/* 课程标签区域优化样式 */
.course-tags {
    margin-bottom: 18px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.tags-left {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    flex: 1;
}

.course-tags span {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 12px;
    line-height: 1.4;
    border-radius: 20px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid transparent;
    font-weight: 500;
}

.course-tags span i {
    margin-right: 4px;
    font-size: 12px;
}

.tag-category {
    background: linear-gradient(135deg, #578bff, #4a6cf7);
    border-color: #4a6cf7;
    color: white;
}

.tag-category a {
    color: white;
    text-decoration: none;
}

.tag-top-category {
    background: #e3f2fd;
    border-color: #bbdefb;
    color: #0d47a1;
}

.tag-top-category a {
    color: #0d47a1;
    text-decoration: none;
}

.tag-views {
    background: #fff3e0;
    border-color: #ffe0b2;
    color: #e65100;
}

.tag-date {
    background: #f1f8e9;
    border-color: #dcedc8;
    color: #33691e;
}

.tag-update {
    background: #fce4ec;
    border-color: #f8bbd0;
    color: #c2185b;
}

.course-tags span:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.tag-category:hover {
    background: linear-gradient(135deg, #4a6cf7, #3b5bdb);
}

.tag-top-category:hover {
    background: #bbdefb;
}

.tag-views:hover {
    background: #ffe0b2;
}

.tag-date:hover {
    background: #dcedc8;
}

.tag-update:hover {
    background: #f8bbd0;
}

@media (max-width: 768px) {
    .course-tags {
        flex-direction: column;
        align-items: flex-start;
    }

    .tags-right {
        margin-left: 0;
        width: 100%;
        justify-content: flex-start;
    }

    .course-tags span {
        font-size: 12px;
        padding: 5px 10px;
    }
}

/* VIP折扣信息样式优化 */
.vip-discount-info {
    padding: 12px 16px;
    margin: 15px 0;
    background: linear-gradient(135deg, #f0f4ff 0%, #e0e9ff 100%);
    border-left: 4px solid #578bff;
    border-radius: 8px;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 8px rgba(87, 139, 255, 0.15);
    transition: all 0.3s ease;
}

.vip-discount-info:hover {
    box-shadow: 0 4px 12px rgba(87, 139, 255, 0.25);
    transform: translateY(-1px);
}

.vip-discount-info i {
    color: #ffd700;
    font-size: 18px;
    margin-right: 10px;
}

.vip-discount-info .vip-label {
    font-weight: 600;
    color: #578bff;
    margin-right: 5px;
}

.vip-discount-info span {
    font-size: 14px;
    color: #333;
}

@media (max-width: 768px) {
    .vip-discount-info {
        padding: 10px 14px;
        font-size: 13px;
    }

    .vip-discount-info i {
        font-size: 16px;
        margin-right: 8px;
    }
}