/* 业务领域长条图片 */
.business-banner {
  margin-top: 70px;
  position: relative;
  height: 500px;
  overflow: hidden;
}

.banner-image {
  position: relative;
  width: 100%;
  height: 100%;
}

.banner-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.7);
  /**************border-radius: 0;设置直角**/
  border-radius: 0;
}

.banner-text {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
}

.banner-text h1 {
  color: white;
  font-size: 3rem;
  font-weight: 300;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  margin: 0;
}

/* 业务领域分类展示 */
.business-categories {
  padding: 80px 0;
}

.category-row {
  margin-bottom: 80px;
}

.category-title {
  font-size: 2rem;
  color: #2c759f;
  margin-bottom: 40px;
  text-align: center;
  font-weight: 400;
  position: relative;
}

.category-title::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: #ff7d00;
}

.project-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.project-item {
  text-align: center;
  transition: transform 0.3s ease;
}

.project-item:hover {
  transform: translateY(-5px);
}

.project-image {
  width: 100%;
  height: 250px;
  object-fit: cover; /*border-radius:直角后面写0*/
  border-radius: 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.project-item:hover .project-image {
  transform: scale(1.05);
}

.project-name {
  margin-top: 15px;
  font-size: 1.1rem;
  color: #333;
  font-weight: 500;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .project-row {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .category-title {
    font-size: 1.5rem;
  }

  .main-image {
    height: 250px;
  }
}

@media (max-width: 768px) {
  .project-hero h1 {
    font-size: 2.5rem;
  }

  .business-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .business-content {
    padding: 20px;
  }
}