.culture-exchange {
  background-color: #f5f9fa;
  position: relative;
}

.culture-exchange::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><path fill="%23a6977b" fill-opacity="0.05" d="M0,0 L100,0 L100,100 L0,100 L0,0 Z M50,50 L60,40 L70,50 L60,60 L50,50 Z M30,30 L40,20 L50,30 L40,40 L30,30 Z M70,30 L80,20 L90,30 L80,40 L70,30 Z M30,70 L40,60 L50,70 L40,80 L30,70 Z M70,70 L80,60 L90,70 L80,80 L70,70 Z"></path></svg>');
  opacity: 0.2;
  z-index: 0;
}

.activity-card {
  background-color: #fff;
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
  height: 100%;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  border-left: 4px solid #4a6670;
}

.activity-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.activity-content {
  padding: 1.5rem;
}

.activity-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #4a6670;
}

.activity-description {
  color: #5a6e72;
  margin-bottom: 1rem;
}

.partnership-section {
  margin-top: 4rem;
  background-color: #fff;
  padding: 3rem 0;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.partnership-description {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
  color: #5a6e72;
}

.gallery-section {
  margin-top: 4rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.gallery-item {
  border-radius: 8px;
  overflow: hidden;
  height: 200px;
  position: relative;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.3s ease;
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-icon {
  color: white;
  font-size: 2rem;
}

.join-us-section {
  text-align: center;
  margin-top: 4rem;
  padding: 3rem;
  background: linear-gradient(135deg, rgba(74, 102, 112, 0.1) 0%, rgba(166, 151, 123, 0.1) 100%);
  border-radius: 10px;
}

.join-us-title {
  font-size: 2rem;
  color: #4a6670;
  margin-bottom: 1.5rem;
}

.join-us-description {
  max-width: 600px;
  margin: 0 auto 2rem;
  color: #5a6e72;
}

@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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