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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  line-height: 1.6;
  color: #fff;
  background: #0a1929;
}

body.ui-style-7 {
  background: linear-gradient(135deg, #0a1929 0%, #1e3a5f 100%);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  background: rgba(10, 25, 41, 0.95);
  backdrop-filter: blur(10px);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: #ffd700;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 30px;
  align-items: center;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.3s;
  white-space: nowrap;
}

.nav-links a:hover {
  color: #ffd700;
}

main {
  padding: 40px 0;
  min-height: calc(100vh - 200px);
}

.page-header {
  margin-bottom: 40px;
}

.page-title {
  font-size: 32px;
  margin-bottom: 15px;
  color: #ffd700;
}

.page-description {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.8);
  max-width: 800px;
}

.section {
  margin-bottom: 50px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(255, 215, 0, 0.3);
}

.section-title {
  font-size: 24px;
  color: #ffd700;
}

.section-more {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s;
}

.section-more:hover {
  color: #ffd700;
}

.hero-slider {
  position: relative;
  height: 400px;
  margin-bottom: 50px;
  border-radius: 12px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.3);
}

.hero-slides {
  display: flex;
  overflow-x: auto;
  scroll-behavior: smooth;
  gap: 20px;
  padding: 20px;
  scrollbar-width: thin;
  scrollbar-color: #ffd700 rgba(255, 255, 255, 0.1);
}

.hero-slides::-webkit-scrollbar {
  height: 8px;
}

.hero-slides::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

.hero-slides::-webkit-scrollbar-thumb {
  background: #ffd700;
  border-radius: 4px;
}

.hero-slide {
  flex: 0 0 300px;
  height: 360px;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  transition: transform 0.3s;
}

.hero-slide:hover {
  transform: scale(1.05);
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-slide-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
}

.hero-slide-title {
  font-size: 18px;
  margin-bottom: 8px;
}

.hero-slide-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 30px;
}

.video-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.video-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(255, 215, 0, 0.2);
}

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

.video-cover {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.3);
}

.video-cover img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.video-card:hover .video-cover img {
  transform: scale(1.1);
}

.video-info {
  padding: 15px;
}

.video-title {
  font-size: 16px;
  margin-bottom: 8px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.video-meta {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 8px;
}

.video-one-line {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-height: 1.5;
}

.video-player-section {
  margin-bottom: 40px;
}

.video-player {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

.video-player-inner {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
}

.player-play-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: rgba(255, 215, 0, 0.9);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  z-index: 10;
}

.player-play-btn:hover {
  background: #ffd700;
  transform: translate(-50%, -50%) scale(1.1);
}

.player-play-icon {
  font-size: 32px;
  color: #0a1929;
  margin-left: 5px;
}

.detail-header {
  margin-bottom: 30px;
}

.detail-title {
  font-size: 36px;
  margin-bottom: 20px;
  color: #ffd700;
}

.detail-info {
  background: rgba(255, 255, 255, 0.05);
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 30px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.info-row {
  display: flex;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.info-label {
  width: 100px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
  flex-shrink: 0;
}

.info-value {
  flex: 1;
  color: rgba(255, 255, 255, 0.9);
}

.content-module {
  background: rgba(255, 255, 255, 0.05);
  padding: 25px;
  border-radius: 8px;
  margin-bottom: 25px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.module-title {
  font-size: 20px;
  margin-bottom: 15px;
  color: #ffd700;
  border-left: 4px solid #ffd700;
  padding-left: 15px;
}

.module-content {
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.video-card--related .video-cover {
  padding-top: 140%;
}

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

.top-item {
  display: flex;
  gap: 20px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  margin-bottom: 15px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s;
}

.top-item:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateX(5px);
}

.top-item__rank {
  font-size: 32px;
  font-weight: 700;
  color: #ffd700;
  width: 60px;
  text-align: center;
  flex-shrink: 0;
}

.top-item__cover {
  width: 120px;
  height: 160px;
  border-radius: 6px;
  overflow: hidden;
  flex-shrink: 0;
}

.top-item__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.top-item__info {
  flex: 1;
}

.top-item__title {
  font-size: 18px;
  margin-bottom: 10px;
  color: #fff;
}

.top-item__meta {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 10px;
}

.top-item__desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.6;
}

footer {
  background: rgba(10, 25, 41, 0.95);
  padding: 30px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 60px;
}

.footer-content {
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

.back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  width: 50px;
  height: 50px;
  background: #ffd700;
  color: #0a1929;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  transition: all 0.3s;
  z-index: 999;
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(255, 215, 0, 0.3);
}

.back-to-top.visible {
  display: flex;
}

@media (max-width: 768px) {
  .nav-links {
    gap: 15px;
  }

  .nav-links a {
    font-size: 13px;
  }

  .logo {
    font-size: 20px;
  }

  .page-title {
    font-size: 24px;
  }

  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 15px;
  }

  .hero-slider {
    height: 300px;
  }

  .hero-slide {
    flex: 0 0 240px;
    height: 280px;
  }

  .section-title {
    font-size: 20px;
  }

  .detail-title {
    font-size: 28px;
  }

  .video-cover {
    padding-top: 140%;
  }

  .video-info {
    padding: 12px;
  }

  .video-title {
    font-size: 14px;
  }

  .related-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 15px;
  }

  .top-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .top-item__rank {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .nav-links {
    gap: 10px;
  }

  .nav-links a {
    font-size: 12px;
  }

  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}