@import url('variables.css');

.hero {
  position: relative;
  height: 450px;
  background: radial-gradient(circle at 0% 0%, rgba(0,180,255,0.35) 0%, transparent 45%),
              linear-gradient(135deg, #020617 0%, #0b1120 40%, #111827 100%);
  overflow: hidden;
}

.hero-container {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.hero-content {
  color: var(--text-inverse);
  max-width: 600px;
  padding: 40px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--border-radius-lg);
  backdrop-filter: blur(10px);
}

.hero-title {
  font-size: 42px;
  font-weight: var(--font-weight-bold);
  margin-bottom: 16px;
  line-height: 1.3;
}

.hero-subtitle {
  font-size: 18px;
  margin-bottom: 24px;
  opacity: 0.9;
}

.hero-cta {
  display: inline-flex;
  gap: 12px;
  margin-top: 24px;
}

.hero-button {
  padding: 12px 32px;
  border-radius: var(--border-radius-base);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
}

.hero-button.primary {
  background-color: var(--primary-color);
  color: var(--text-inverse);
  border: 2px solid var(--primary-color);
}

.hero-button.primary:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
}

.hero-button.outline {
  background-color: transparent;
  color: var(--text-inverse);
  border: 2px solid var(--text-inverse);
}

.hero-button.outline:hover {
  background-color: var(--text-inverse);
  color: var(--primary-color);
}

.hero-banner {
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-banner img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.price-shortcut-bar {
  background-color: var(--background-color-white);
  padding: 16px 0;
  border-bottom: 1px solid var(--border-color);
  margin-top: -20px;
  position: relative;
  z-index: 5;
}

.price-shortcut-title {
  font-size: 14px;
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin-bottom: 12px;
}

.price-shortcut-content {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.price-shortcut-item {
  padding: 8px 20px;
  background-color: var(--background-color-light);
  color: var(--text-primary);
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: var(--transition-fast);
  white-space: nowrap;
  border: 1px solid transparent;
}

.price-shortcut-item:hover {
  background-color: var(--primary-color);
  color: var(--text-inverse);
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--box-shadow-sm);
}

.price-shortcut-bar .container,
.brand-bar .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.price-shortcut-content,
.brand-bar-content {
  justify-content: center;
}

.brand-bar {
  background-color: var(--background-color-white);
  padding: 20px 0;
  border-bottom:1px solid var(--border-color);
  box-shadow: var(--box-shadow-sm);
  position: relative;
  z-index: 10;
}

.brand-bar-title {
  font-size: 16px;
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: 16px;
}

.brand-bar-content {
  display: flex;
  gap: 24px;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding: 8px 0;
  min-height: 100px;
  scrollbar-width: none;
  -ms-overflow-style: none;
  width: 100%;
}

.brand-bar-content::-webkit-scrollbar {
  display: none;
}

.brand-bar-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 80px;
  padding: 12px 16px;
  background-color: var(--background-color-light);
  border-radius: var(--border-radius-base);
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
  color: inherit;
  border: 2px solid transparent;
  flex-shrink: 0;
  z-index: 1;
}

.brand-bar-item:hover {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  transform: translateY(-4px);
  box-shadow: var(--box-shadow-md);
}

.brand-bar-item:hover .brand-bar-name {
  color: var(--text-inverse);
}

.brand-bar-logo {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--background-color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 8px;
  transition: var(--transition-fast);
  box-shadow: var(--box-shadow-sm);
  line-height: 44px;
}

.brand-bar-item:hover .brand-bar-logo {
  background-color: rgba(255,255,255,0.9);
}

.brand-bar-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  text-align: center;
  line-height: 1.2;
  white-space: nowrap;
  transition: var(--transition-fast);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}

.section {
  padding: 60px 0;
}

.section-title {
  font-size: 28px;
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 40px;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
}

.section-header-left h2 {
  font-size: 24px;
  font-weight: var(--font-weight-bold);
  margin-bottom: 8px;
}

.section-header-left p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.section-header-right {
  display: flex;
  gap: 12px;
}

.section-link {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: var(--transition-fast);
}

.section-link:hover {
  color: var(--primary-color);
}

.quick-nav {
  background-color: var(--background-color-white);
  padding: 40px 0;
  margin-top: -30px;
  position: relative;
  z-index: 10;
  box-shadow: var(--box-shadow-sm);
  border-radius: var(--border-radius-lg);
}

.quick-nav-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 20px;
}

.quick-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  transition: var(--transition-fast);
  padding: 16px 8px;
  border-radius: var(--border-radius-base);
}

.quick-nav-item:hover {
  background-color: var(--background-color-light);
  transform: translateY(-4px);
}

.quick-nav-icon {
  width: 48px;
  height: 48px;
  background-color: var(--background-color-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  transition: var(--transition-fast);
}

.quick-nav-item:hover .quick-nav-icon {
  background-color: var(--primary-color);
  color: var(--text-inverse);
}

.quick-nav-text {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  text-align: center;
  line-height: 1.4;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.card {
  background-color: var(--background-color-white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--box-shadow-sm);
  transition: var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--box-shadow-lg);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background-color: var(--background-color-light);
}

.card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  background-color: var(--error-color);
  color: var(--text-inverse);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--border-radius-base);
}

.card-body {
  padding: 16px;
}

.card-title {
  font-size: 16px;
  font-weight: var(--font-weight-medium);
  margin-bottom: 8px;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color-light);
}

.card-price {
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  color: var(--error-color);
}

.card-price span {
  font-size: 14px;
  font-weight: var(--font-weight-normal);
  color: var(--text-secondary);
}

.card-stats {
  display: flex;
  gap: 16px;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.card-stat {
  display: flex;
  align-items: center;
  gap: 4px;
}

.article-card {
  background-color: var(--background-color-white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--box-shadow-sm);
  transition: var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--box-shadow-lg);
}

.article-card-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background-color: var(--background-color-light);
}

.article-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card-title {
  font-size: 16px;
  font-weight: var(--font-weight-medium);
  margin-bottom: 12px;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-excerpt {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.article-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
}

.article-card-author {
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-card-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
}

.article-card-date {
  display: flex;
  align-items: center;
  gap: 4px;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.video-card {
  background-color: var(--background-color-white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--box-shadow-sm);
  transition: var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.video-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--box-shadow-lg);
}

.video-card-thumbnail {
  position: relative;
  width: 100%;
  height: 200px;
  background-color: var(--background-color-light);
}

.video-card-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-card-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  padding: 4px 8px;
  background-color: rgba(0, 0, 0, 0.8);
  color: var(--text-inverse);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--border-radius-sm);
}

.video-card-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background-color: rgba(0, 0, 0, 0.6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.video-card:hover .video-card-play {
  background-color: var(--error-color);
  transform: translate(-50%, -50%) scale(1.1);
}

.video-card-play::after {
  content: '▶';
  color: var(--text-inverse);
  font-size: 24px;
  margin-left: 4px;
}

.video-card-body {
  padding: 16px;
}

.video-card-title {
  font-size: 16px;
  font-weight: var(--font-weight-medium);
  margin-bottom: 12px;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.forum-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.forum-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-color-light);
  display: flex;
  gap: 16px;
}

.forum-item:last-child {
  border-bottom: none;
}

.forum-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.forum-content {
  flex: 1;
}

.forum-title {
  font-size: 16px;
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin-bottom: 8px;
  display: block;
  text-decoration: none;
}

.forum-title:hover {
  color: var(--primary-color);
}

.forum-title.is-hot {
  position: relative;
  padding-left: 24px;
}

.forum-title.is-hot::before {
  content: '🔥';
  position: absolute;
  left: 0;
  top: 0;
  font-size: 16px;
}

.forum-excerpt {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.forum-meta {
  display: flex;
  gap: 20px;
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
}

.forum-meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

@media (max-width: 1200px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  .hero {
    height: 350px;
  }
  
  .hero-title {
    font-size: 32px;
  }
  
  .brand-bar-item {
    min-width: 70px;
    padding: 10px 12px;
  }
  
  .brand-bar-logo {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }
  
  .brand-bar-name {
    font-size: 12px;
  }
  
  .quick-nav-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer .container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero {
    height: 300px;
  }
  
  .hero-content {
    padding: 24px;
  }
  
  .hero-title {
    font-size: 24px;
  }
  
  .hero-subtitle {
    font-size: 14px;
  }
  
  .hero-banner {
    display: none;
  }
  
  .brand-bar {
    padding: 16px 0;
  }
  
  .brand-bar-title {
    font-size: 14px;
  }
  
  .brand-bar-item {
    min-width: 65px;
    padding: 8px 10px;
  }
  
  .brand-bar-logo {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }
  
  .brand-bar-name {
    font-size: 11px;
  }
  
  .quick-nav-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .card-grid,
  .video-grid {
    grid-template-columns: 1fr;
  }
  
  .section {
    padding: 40px 0;
  }
  
  .footer .container {
    grid-template-columns: 1fr;
  }
}