/* ============================================
   合作专区样式
   ============================================ */

.cooperate-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.cooperate-grid--single {
  grid-template-columns: 1fr;
  max-width: 560px;
}

.cooperate-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.cooperate-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
}

.cooperate-card-icon {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  transition: transform var(--transition-normal);
}

.cooperate-card:hover .cooperate-card-icon {
  transform: scale(1.08);
}

.cooperate-card-icon.nano {
  background: linear-gradient(135deg, #1a2a6c 0%, #1e3a8a 50%, #3b82f6 100%);
}

.cooperate-card-icon.portal {
  background: linear-gradient(135deg, #d4a843 0%, #e8c96a 50%, #f0d78c 100%);
}

.cooperate-card-body {
  padding: var(--space-md);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.cooperate-card-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.cooperate-card-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  flex: 1;
  margin-bottom: var(--space-sm);
}

.cooperate-card-link {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
}

.cooperate-card-link .arrow-icon {
  transition: transform var(--transition-fast);
}

.cooperate-card:hover .cooperate-card-link .arrow-icon {
  transform: translateX(4px);
}

/* 响应式 */
@media (max-width: 768px) {
  .cooperate-grid {
    grid-template-columns: 1fr;
  }
}