* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  color: #333;
  background: #f5f5f5;
}

.site-header {
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-logo a {
  font-size: 1.5rem;
  font-weight: bold;
  color: #333;
  text-decoration: none;
}

.site-nav .nav-list {
  display: flex;
  list-style: none;
  gap: 0.5rem;
}

.nav-item a {
  padding: 0.5rem 1rem;
  color: #666;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.3s;
  white-space: nowrap;
}

.nav-item a:hover,
.nav-item.active a {
  background: #f0f0f0;
  color: #333;
}

.main-content {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 2rem;
}

.hero-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  padding: 3rem 2rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  text-align: center;
}

.hero-title {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  line-height: 1.4;
}

.hero-desc {
  font-size: 1.1rem;
  opacity: 0.9;
}

.site-intro {
  background: #fff;
  padding: 2rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.site-intro h2 {
  margin-bottom: 1rem;
  color: #333;
}

.video-section {
  margin-bottom: 3rem;
}

.section-header {
  margin-bottom: 1.5rem;
}

.section-title {
  font-size: 1.5rem;
  color: #333;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #667eea;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

.video-card {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s, box-shadow 0.3s;
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.video-card__link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.video-cover {
  width: 100%;
  padding-top: 56.25%;
  position: relative;
  overflow: hidden;
  background: #e0e0e0;
}

.video-cover img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-info {
  padding: 1rem;
}

.video-title {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: #333;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.video-one-line {
  font-size: 0.875rem;
  color: #666;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.page-header {
  background: #fff;
  padding: 2rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.page-title {
  font-size: 2rem;
  color: #333;
  margin-bottom: 0.5rem;
}

.page-desc {
  font-size: 1rem;
  color: #666;
}

.page--grid .video-grid {
  background: #fff;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.page--with-sidebar .layout-with-sidebar {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 2rem;
}

.layout__side--filters {
  background: #fff;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  height: fit-content;
}

.layout__main {
  background: #fff;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.page--top .top-list__items {
  list-style: none;
  background: #fff;
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.top-list__item {
  display: grid;
  grid-template-columns: 60px 200px 1fr;
  gap: 1.5rem;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid #f0f0f0;
}

.top-list__item:last-child {
  border-bottom: none;
}

.top-rank {
  font-size: 2rem;
  font-weight: bold;
  color: #667eea;
  text-align: center;
}

.top-cover {
  width: 100%;
  padding-top: 56.25%;
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  background: #e0e0e0;
}

.top-cover img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.top-info {
  flex: 1;
}

.top-title a {
  font-size: 1.2rem;
  color: #333;
  text-decoration: none;
  font-weight: 600;
}

.top-title a:hover {
  color: #667eea;
}

.top-meta {
  color: #999;
  font-size: 0.875rem;
  margin: 0.5rem 0;
}

.top-desc {
  color: #666;
  font-size: 0.95rem;
}

.page--grouped .group {
  background: #fff;
  padding: 2rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.group__title {
  font-size: 1.5rem;
  color: #333;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #667eea;
}

.group__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

.detail-page {
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  padding: 2rem;
}

.video-player-section {
  margin: -2rem -2rem 2rem -2rem;
}

.video-player {
  background: #000;
}

.video-player-inner {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.player-play-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  border: none;
  cursor: pointer;
  transition: all 0.3s;
}

.player-play-btn:hover {
  background: #fff;
  transform: translate(-50%, -50%) scale(1.1);
}

.player-play-icon {
  font-size: 2rem;
  color: #667eea;
}

.detail-header {
  margin-bottom: 2rem;
}

.detail-title {
  font-size: 2rem;
  color: #333;
}

.detail-info {
  background: #f9f9f9;
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 2rem;
}

.detail-info h2 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: #333;
}

.info-list {
  list-style: none;
}

.info-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid #eee;
}

.info-list li:last-child {
  border-bottom: none;
}

.detail-module {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid #f0f0f0;
}

.detail-module:last-of-type {
  border-bottom: none;
}

.detail-module h2 {
  font-size: 1.4rem;
  color: #333;
  margin-bottom: 1rem;
}

.detail-module p {
  font-size: 1rem;
  color: #666;
  line-height: 1.8;
  white-space: pre-line;
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tag {
  background: #f0f0f0;
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-size: 0.875rem;
  color: #666;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
}

.site-footer {
  background: #333;
  color: #fff;
  padding: 2rem;
  margin-top: 3rem;
  text-align: center;
}

.footer-container p {
  font-size: 0.9rem;
  opacity: 0.8;
}

@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }

  .site-nav .nav-list {
    flex-wrap: nowrap;
    overflow-x: auto;
    width: 100%;
    padding: 0.5rem 0;
  }

  .nav-item a {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
  }

  .main-content {
    padding: 0 1rem;
  }

  .hero-title {
    font-size: 1.3rem;
  }

  .hero-desc {
    font-size: 0.95rem;
  }

  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
  }

  .video-cover {
    padding-top: 45%;
  }

  .video-info {
    padding: 0.75rem;
  }

  .video-title {
    font-size: 0.9rem;
  }

  .video-one-line {
    font-size: 0.8rem;
  }

  .page--with-sidebar .layout-with-sidebar {
    grid-template-columns: 1fr;
  }

  .top-list__item {
    grid-template-columns: 40px 120px 1fr;
    gap: 1rem;
    padding: 1rem;
  }

  .top-rank {
    font-size: 1.5rem;
  }

  .top-title a {
    font-size: 1rem;
  }

  .related-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1rem;
  }

  .detail-page {
    padding: 1rem;
  }

  .video-player-section {
    margin: -1rem -1rem 1rem -1rem;
  }
}

.ui-style-9 {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --text-color: #333;
  --bg-color: #f5f5f5;
}

.ui-style-9 .hero-section {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
}

.ui-style-9 .section-title {
  border-bottom-color: var(--primary-color);
}

.ui-style-9 .player-play-icon {
  color: var(--primary-color);
}