/* 下载区域样式 */
.downloads-section {
  width: 100%;
  padding: 40px 0;
}

.catalog-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  background-color: #041c32;
}

.container {
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
}

/* 标题样式 */
.text-4xl {
  font-size: 2.5rem;
  color: #333;
  letter-spacing: 0.05em;
}

/* 网格布局 */
.catalog-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  padding: 0;
  margin: 0;
  margin-top: 2rem;
  list-style: none;
}

/* 目录项样式 */
.catalog-item {
  display: block;
  position: relative;
  transition: all 0.3s ease;
  text-decoration: none;
  box-sizing: border-box;
}

.catalog-item:hover {
  opacity: 0.9;
}

/* 图片样式 */
.catalog-figure {
  width: 100%;
  margin: 0;
  line-height: 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.catalog-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* 名称样式 */
.catalog-name {
  color: #FFF;
  padding: 1rem 0;
  font-weight: 300;
  transition: color 0.3s ease;
  text-align: center;
  font-size: 1.5rem;
}

.catalog-item:hover .catalog-name {
  color: #0066cc;
}

/* 响应式调整 */
@media (max-width: 767px) {
  .catalog-grid {
    --item-width: calc(50% - 10px);
  }
  
  .catalog-item {
    width: var(--item-width);
  }
}

@media (min-width: 768px) {
  .catalog-item {
    width: calc(25% - 15px);
  }
}