/* 基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}


/* 导航方框样式 */
.content-container {
  margin-top: 120px; /* 留出导航栏高度 */
  padding: 20px 5%;
}

.nav-boxes {
  display: flex;
  justify-content: space-between;
  margin: 30px 0;
}

.nav-box {
  flex: 1;
  min-width: 28%;
  margin: 0 1%;
  padding: 20px;
  text-align: center;
  background: #f0f0f0;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.nav-box:hover {
  background: #2196F3;
  color: white;
  transform: translateY(-5px);
}


/* 图片 */
.cover-image {
  width: 100%;
  height: 500px;
  display: block;
  object-fit: cover;
}

.banner-title {
  position: absolute;
  top: calc(50% - 200px);
  left: 15%;
  transform: translateY(-50%);
  z-index: 2;
  color: white;
  font-size: 3em;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
  text-align: left;
  padding-left: 20px;
}

/* 内容区域样式 */
.content-section {
  padding: 80px 0;
  background: #f8f9fa;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-subtitle {
  text-align: center;
  font-size: 1.8em;
  color: #2c3e50;
  margin-bottom: 50px;
  font-weight: 500;
}

.solution-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.showcase-image {
  text-align: center;
}

.drone-type-image {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
  transition: transform 0.3s ease;
}

.drone-type-image:hover {
  transform: scale(1.02);
}

.solution-intro {
  text-align: left;
}

.intro-text {
  font-size: 1.2em;
  line-height: 1.8;
  color: #34495e;
  text-align: justify;
  margin-bottom: 20px;
}

/* 功能特点网格 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 80px;
}

.feature-card {
  background: white;
  padding: 40px 30px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  text-align: center;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-icon {
  font-size: 3em;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.4em;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.feature-card p {
  color: #7f8c8d;
  line-height: 1.6;
}

/* 应用场景 */
.scenario-section {
  background: white;
  padding: 60px 0;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.scenario-title {
  text-align: center;
  font-size: 2em;
  color: #2c3e50;
  margin-bottom: 50px;
  font-weight: 600;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.scenario-item {
  padding: 30px;
  border-left: 4px solid #e74c3c;
  background: #f8f9fa;
  border-radius: 8px;
}

.scenario-item h4 {
  font-size: 1.3em;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.scenario-item p {
  color: #34495e;
  line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .content-section {
    padding: 50px 0;
  }
  
  .section-subtitle {
    font-size: 1.5em;
  }
  
  .solution-showcase {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .drone-type-image {
    max-width: 100%;
    height: auto;
  }
  
  .intro-text {
    font-size: 1.1em;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .feature-card {
    padding: 30px 20px;
  }
  
  .scenario-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}