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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #fff;
  background-color: #000;
  min-height: 100vh;
}

body.ui-style-0 {
  background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
  color: #ffffff;
}

body.ui-style-0 a {
  color: #00d9ff;
  transition: color 0.3s ease;
}

body.ui-style-0 a:hover {
  color: #ff3366;
}

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

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

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

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: #00d9ff;
  text-decoration: none;
  letter-spacing: 2px;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
  flex-wrap: nowrap;
  overflow-x: auto;
}

nav a {
  color: #fff;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  white-space: nowrap;
  padding: 0.5rem 0;
  position: relative;
  transition: all 0.3s ease;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #00d9ff, #ff3366);
  transition: width 0.3s ease;
}

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

main {
  min-height: calc(100vh - 200px);
  padding: 2rem 0;
}

.hero-section {
  text-align: center;
  padding: 4rem 0;
  background: linear-gradient(180deg, rgba(0, 217, 255, 0.1) 0%, transparent 100%);
  margin-bottom: 3rem;
  border-radius: 20px;
}

.hero-section h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(90deg, #00d9ff, #ff3366);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-section p {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 800px;
  margin: 0 auto;
}

.site-intro {
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 15px;
  margin-bottom: 3rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.site-intro p {
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
}

.section-title {
  font-size: 2rem;
  margin: 3rem 0 1.5rem;
  color: #00d9ff;
  position: relative;
  padding-left: 1rem;
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 80%;
  background: linear-gradient(180deg, #00d9ff, #ff3366);
  border-radius: 2px;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.video-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 15px;
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.video-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 217, 255, 0.3);
  border-color: rgba(0, 217, 255, 0.5);
}

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

.video-cover {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: linear-gradient(135deg, #1a1a1a, #0a0a0a);
  position: relative;
}

.video-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.video-cover::after {
  content: '▶';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 3rem;
  color: rgba(255, 255, 255, 0.9);
  opacity: 0;
  transition: opacity 0.3s ease;
  text-shadow: 0 0 20px rgba(0, 217, 255, 0.8);
}

.video-card:hover .video-cover::after {
  opacity: 1;
}

.video-info {
  padding: 1.5rem;
}

.video-title {
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
  color: #fff;
  font-weight: 600;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-one-line,
.video-meta {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  margin-top: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.video-meta span {
  background: rgba(0, 217, 255, 0.2);
  padding: 0.2rem 0.6rem;
  border-radius: 5px;
  font-size: 0.85rem;
}

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

.video-player {
  width: 100%;
  background: #000;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
}

.video-player-inner {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: linear-gradient(135deg, #1a1a1a, #0a0a0a);
}

.player-play-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 100px;
  background: rgba(0, 217, 255, 0.9);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.player-play-btn:hover {
  background: #ff3366;
  transform: translate(-50%, -50%) scale(1.1);
  box-shadow: 0 0 30px rgba(255, 51, 102, 0.5);
}

.player-play-icon {
  font-size: 2.5rem;
  color: #fff;
  margin-left: 5px;
}

.detail-main h1 {
  font-size: 2.5rem;
  margin: 2rem 0 1rem;
  background: linear-gradient(90deg, #00d9ff, #ff3366);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.detail-info-card {
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 15px;
  margin-bottom: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.detail-info-card h2 {
  color: #00d9ff;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

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

.info-item {
  padding: 0.5rem 0;
}

.info-label {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  margin-right: 0.5rem;
}

.info-value {
  color: #fff;
  font-weight: 500;
}

.content-section {
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 15px;
  margin-bottom: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.content-section h2 {
  color: #00d9ff;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.content-section p {
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.tag {
  background: rgba(0, 217, 255, 0.2);
  color: #00d9ff;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  border: 1px solid rgba(0, 217, 255, 0.3);
}

.video-card--related {
  background: rgba(255, 255, 255, 0.03);
}

.page-header {
  text-align: center;
  padding: 3rem 0;
  margin-bottom: 2rem;
}

.page-header h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(90deg, #00d9ff, #ff3366);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-header p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
}

.pagination {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin: 3rem 0;
}

.pagination a,
.pagination span {
  padding: 0.8rem 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: #fff;
  text-decoration: none;
  transition: all 0.3s ease;
}

.pagination a:hover {
  background: rgba(0, 217, 255, 0.2);
  border-color: #00d9ff;
}

.pagination .active {
  background: #00d9ff;
  color: #000;
}

footer {
  background: rgba(0, 0, 0, 0.95);
  padding: 2rem 0;
  margin-top: 4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: rgba(0, 217, 255, 0.9);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: #ff3366;
  transform: translateY(-5px);
}

@media (max-width: 768px) {
  nav ul {
    gap: 1rem;
    padding: 0 1rem;
  }

  nav a {
    font-size: 0.9rem;
  }

  .hero-section h1 {
    font-size: 1.8rem;
  }

  .hero-section p {
    font-size: 1rem;
  }

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

  .video-cover {
    height: 160px;
  }

  .detail-main h1 {
    font-size: 1.8rem;
  }

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

@media (max-width: 480px) {
  .video-grid {
    grid-template-columns: 1fr;
  }

  .video-cover {
    height: 180px;
  }

  .header-content {
    flex-direction: column;
    gap: 1rem;
  }

  nav ul {
    width: 100%;
    justify-content: center;
  }
}