* {
  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: 100;
}

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

.site-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1a73e8;
}

.main-nav {
  display: flex;
  gap: 1rem;
  flex-wrap: nowrap;
  overflow-x: auto;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.main-nav::-webkit-scrollbar {
  display: none;
}

.nav-link {
  color: #333;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: all 0.3s;
  flex-shrink: 0;
}

.nav-link:hover,
.nav-link.active {
  background: #1a73e8;
  color: #fff;
}

.site-main {
  min-height: calc(100vh - 200px);
}

.content-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.hero-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  padding: 3rem 1rem;
  text-align: center;
}

.hero-title {
  font-size: 2rem;
  margin-bottom: 1rem;
  line-height: 1.4;
}

.hero-desc {
  font-size: 1.1rem;
  max-width: 800px;
  margin: 0 auto;
  opacity: 0.95;
}

.intro-section {
  background: #fff;
  margin: 2rem 0;
}

.intro-section p {
  line-height: 1.8;
  text-indent: 2em;
}

.video-section {
  margin: 3rem 0;
}

.section-title {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  color: #1a73e8;
  border-left: 4px solid #1a73e8;
  padding-left: 1rem;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 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 {
  position: relative;
  padding-top: 56.25%;
  background: #eee;
  overflow: hidden;
}

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

.video-info {
  padding: 1rem;
}

.video-title {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.video-one-line {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 0.5rem;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.video-meta {
  display: flex;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: #999;
  flex-wrap: wrap;
}

.meta-item {
  background: #f0f0f0;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
}

.page-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid #1a73e8;
}

.page-header h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: #1a73e8;
}

.page-desc {
  color: #666;
  line-height: 1.8;
}

.top-list__items {
  list-style: none;
}

.top-list__item {
  background: #fff;
  margin-bottom: 1rem;
  padding: 1rem;
  border-radius: 8px;
  display: flex;
  gap: 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s;
}

.top-list__item:hover {
  transform: translateX(8px);
}

.rank-badge {
  width: 40px;
  height: 40px;
  background: #1a73e8;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-weight: 700;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.item-cover {
  width: 120px;
  flex-shrink: 0;
}

.item-cover img {
  width: 100%;
  height: auto;
  border-radius: 4px;
}

.item-info {
  flex: 1;
}

.item-title {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.item-title a {
  color: #333;
  text-decoration: none;
}

.item-title a:hover {
  color: #1a73e8;
}

.item-desc {
  color: #666;
  margin-bottom: 0.5rem;
}

.item-meta {
  color: #999;
  font-size: 0.9rem;
}

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

.video-player {
  background: #000;
  border-radius: 8px;
  overflow: hidden;
}

.video-player-inner {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
}

.player-play-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: rgba(255,255,255,0.3);
  border: 3px solid #fff;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.player-play-btn:hover {
  background: rgba(255,255,255,0.5);
  transform: translate(-50%, -50%) scale(1.1);
}

.player-play-icon {
  font-size: 2rem;
  color: #fff;
  margin-left: 4px;
}

.video-header h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.video-basic-info {
  background: #fff;
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 2rem;
}

.video-basic-info h2 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: #1a73e8;
}

.info-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 1rem;
}

.info-list dt {
  font-weight: 600;
  color: #666;
}

.info-list dd {
  color: #333;
}

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

.detail-module h2 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: #1a73e8;
  border-left: 4px solid #1a73e8;
  padding-left: 1rem;
}

.detail-module p {
  line-height: 1.8;
  color: #333;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-item {
  background: #f0f0f0;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  transition: all 0.3s;
}

.tag-item:hover {
  background: #1a73e8;
  color: #fff;
}

.related-videos {
  margin-top: 3rem;
}

.related-videos h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: #1a73e8;
  border-left: 4px solid #1a73e8;
  padding-left: 1rem;
}

.site-footer {
  background: #333;
  color: #fff;
  padding: 2rem 1rem;
  margin-top: 3rem;
  text-align: center;
}

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

  .main-nav {
    width: 100%;
    justify-content: flex-start;
  }

  .hero-title {
    font-size: 1.5rem;
  }

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

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

  .top-list__item {
    flex-direction: column;
  }

  .item-cover {
    width: 100%;
  }
}

.ui-style-0 body { background: #000; color: #fff; }
.ui-style-0 .site-header { background: #1a1a1a; }
.ui-style-0 .video-card { background: #222; }
.ui-style-0 .hero-section { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }

.ui-style-1 body { background: #f8f8f8; }
.ui-style-1 .hero-section { background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%); }

.ui-style-2 body { background: #fff; }
.ui-style-2 .hero-section { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }

.ui-style-3 body { background: #fff; }
.ui-style-3 .hero-section { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }

.ui-style-4 body { background: #fafafa; }
.ui-style-4 .hero-section { background: linear-gradient(135deg, #fa709a 0%, #fee140 100%); }

.ui-style-5 body { background: #141414; color: #fff; }
.ui-style-5 .site-header { background: #1f1f1f; }
.ui-style-5 .video-card { background: #2a2a2a; }

.ui-style-6 body { background: #0f1c2e; color: #fff; }
.ui-style-6 .site-header { background: #1a2332; }
.ui-style-6 .video-card { background: #1e2a3a; }

.ui-style-7 body { background: #0d1b2a; color: #fff; }
.ui-style-7 .site-header { background: #1b263b; }

.ui-style-8 body { background: #0a0e27; color: #fff; }
.ui-style-8 .site-header { background: #1a1f3a; }

.ui-style-9 body { background: #000; color: #fff; }
.ui-style-9 .site-header { background: #0a0a0a; }

.ui-style-10 body { background: #f0f7ee; }
.ui-style-10 .hero-section { background: linear-gradient(135deg, #00c75a 0%, #00e676 100%); }

.ui-style-11 body { background: #f8f9fa; }
.ui-style-11 .hero-section { background: linear-gradient(135deg, #0099ff 0%, #00d4ff 100%); }

.ui-style-12 body { background: #fff5f0; }
.ui-style-12 .hero-section { background: linear-gradient(135deg, #ff6700 0%, #ff8533 100%); }

.ui-style-13 body { background: #f6f9fb; }
.ui-style-13 .hero-section { background: linear-gradient(135deg, #00a1d6 0%, #fb7299 100%); }

.ui-style-14 body { background: #fff; }
.ui-style-14 .hero-section { background: linear-gradient(135deg, #003d7a 0%, #0066cc 100%); }