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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #f5f5f5;
}

.ui-style-0 {
  --primary-color: #ff6b6b;
  --secondary-color: #4ecdc4;
  --text-color: #2d3436;
  --bg-color: #ffffff;
  --border-radius: 8px;
}

header {
  background: var(--bg-color);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  flex-wrap: nowrap;
  align-items: center;
}

nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.3s;
}

nav a:hover {
  color: var(--primary-color);
}

main {
  max-width: 1400px;
  margin: 2rem auto;
  padding: 0 2rem;
}

.page-title {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.page-intro {
  background: var(--bg-color);
  padding: 2rem;
  border-radius: var(--border-radius);
  margin-bottom: 2rem;
  line-height: 1.8;
}

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

.video-card {
  background: var(--bg-color);
  border-radius: var(--border-radius);
  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;
  width: 100%;
  padding-top: 56.25%;
  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: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-color);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

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

.video-player {
  position: relative;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
}

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

.player-play-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: rgba(255,255,255,0.9);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 2rem;
  color: var(--primary-color);
  transition: all 0.3s;
}

.player-play-btn:hover {
  background: rgba(255,255,255,1);
  transform: translate(-50%, -50%) scale(1.1);
}

.detail-section {
  background: var(--bg-color);
  padding: 2rem;
  border-radius: var(--border-radius);
  margin-bottom: 2rem;
}

.detail-section h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-color);
  border-left: 4px solid var(--primary-color);
  padding-left: 1rem;
}

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

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

.info-label {
  font-weight: 600;
  color: var(--text-color);
  margin-right: 0.5rem;
}

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

.top-list__item {
  counter-increment: top-counter;
  background: var(--bg-color);
  padding: 1rem;
  margin-bottom: 1rem;
  border-radius: var(--border-radius);
  display: flex;
  gap: 1rem;
  align-items: center;
}

.top-list__item::before {
  content: counter(top-counter);
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
  min-width: 40px;
  text-align: center;
}

.top-list__cover {
  width: 120px;
  height: 68px;
  overflow: hidden;
  border-radius: 4px;
  flex-shrink: 0;
}

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

.top-list__info {
  flex: 1;
}

footer {
  background: var(--text-color);
  color: #fff;
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
}

@media (max-width: 768px) {
  .header-inner {
    padding: 1rem;
  }

  nav ul {
    gap: 1rem;
    font-size: 0.9rem;
  }

  main {
    padding: 0 1rem;
  }

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

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

  .top-list__cover {
    width: 80px;
    height: 45px;
  }
}