.fade-in-section {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.fade-in-section.is-visible {
  opacity: 1;
  transform: translateY(0);
}
#text-module {
  margin-top: 50px;
  width: 100%;
  height: 400px;
  background-color: #0f1533;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
  font-size: 30px;
}
/* 页面容器 */
.product-advantages {
  padding: 60px 0;
  background-color: #fff;
}
/* 标题样式 */
.section-title {
  text-align: center;
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 50px;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s ease;
}
/* 优势卡片容器 */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}
/* 优势卡片 */
.advantage-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 20px;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}
/* 卡片图标 */
.advantage-icon {
  width: 80px;
  height: 80px;
  margin-bottom: 20px;
  transition: transform 0.3s ease;
}
/* 卡片标题 */
.advantage-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}
/* 卡片描述 */
.advantage-desc {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}
/* 卡片hover动效 */
.advantage-card:hover .advantage-icon {
  transform: scale(1.1);
}
/* 响应式适配（小屏幕下单列） */
@media (max-width: 768px) {
  .advantages-grid {
    grid-template-columns: 1fr;
  }
}

/* 页面背景 */
/* body {
  background: linear-gradient(to right, #f0f8ff, #e6f3ff);
} */
/* 模块容器 */
.model-section {
  margin-top: 60px;
  margin-bottom: 60px;
}
/* 标题区域 */
.section-header {
  text-align: center;
  margin-bottom: 40px;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s ease;
}
.section-title {
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 10px;
}
.section-desc {
  color: #666;
  font-size: 16px;
}
/* 模型卡片容器（响应式网格） */
.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}
/* 模型卡片 */
.model-card {
  background-color: #fff;
  border-radius: 8px;
  padding: 25px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(20px);
}
/* 卡片悬浮动效 */
.model-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}
/* 卡片图标+名称区域 */
.model-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 15px;
}
.model-icon {
  width: 40px;
  height: 40px;
  background-color: #6c75ff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
}
.model-name {
  font-size: 18px;
  font-weight: 600;
}
/* 标签区域 */
.model-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 15px;
}
.model-tag {
  padding: 3px 8px;
  background-color: #e6f3ff;
  color: #4e73df;
  font-size: 12px;
  border-radius: 4px;
}
/* 描述区域 */
.model-desc {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 20px;
  height: 86px; /* 固定高度，避免卡片高度不一致 */
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
}
/* 按钮区域 */
.model-btns {
  display: flex;
  gap: 10px;
}
.model-btn {
  flex: 1;
  padding: 6px 0;
  border: 1px solid #4e73df;
  border-radius: 4px;
  background-color: #fff;
  color: #4e73df;
  font-size: 14px;
  text-align: center;
  transition: all 0.3s ease;
}
.model-btn:hover {
  background-color: #4e73df;
  color: #fff;
}
/* 响应式适配 */
@media (max-width: 992px) {
  .model-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 576px) {
  .model-grid {
    grid-template-columns: 1fr;
  }
}

/* 计费板块容器 */
.billing-section {
  width: 100% !important;
  background: linear-gradient(to right, #f0f5f9, #fff);
  margin-top: 80px;
  padding: 80px 0;
  overflow: hidden;
  /* border: 1px solid #000; */
  display: flex;
  justify-content: space-evenly;
  align-items: center;
}
/* 内容容器（左右分栏） */
.billing-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 150px;
  flex-wrap: wrap;
}
/* 左侧设备展示区 */
.device-display {
  flex: 1;
  min-width: 300px;
  position: relative;
  opacity: 0;
  /* transform: translateX(-30px); */
  transition: all 0.8s ease;
}
.device-display img {
  width: 100%;
  max-width: 800px;
  border-radius: 8px;
  /* box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1); */
  transition: transform 0.5s ease;
}
/* 设备悬浮动效 */
.device-display:hover img {
  transform: scale(1.02);
}
/* 右侧计费说明区 */
.billing-info {
  flex: 1;
  min-width: 300px;
  opacity: 0;
  transform: translateX(30px);
  transition: all 0.8s ease 0.3s; /* 延迟0.3s渐入 */
}
/* 标题样式 */
.billing-title {
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 10px;
  color: #333;
}
.billing-subtitle {
  font-size: 18px;
  color: #666;
  margin-bottom: 30px;
}
/* 计费项列表 */
.billing-list {
  list-style: none;
  padding: 0;
}
.billing-item {
  margin-bottom: 25px;
}
.billing-item h3 {
  font-size: 20px;
  font-weight: 600;
  color: #222;
  margin-bottom: 8px;
  position: relative;
  padding-left: 20px;
}
/* 计费项标题前的点 */
.billing-item h3::before {
  content: "•";
  position: absolute;
  left: 0;
  color: #4e73df;
  font-size: 24px;
  line-height: 20px;
}
.billing-item p {
  font-size: 14px;
  color: #666;
  padding-left: 20px;
}
/* 响应式适配（小屏幕下上下排列） */
@media (max-width: 768px) {
  .billing-content {
    flex-direction: column;
    text-align: center;
  }
  .billing-item h3,
  .billing-item p {
    padding-left: 0;
    text-align: left;
  }
  .billing-item h3::before {
    left: -20px;
  }
}

/* 监控数据（居中核心） */
.monitor-section {
  background: linear-gradient(to left, #f0f5f9, #fff);
  margin: 0 auto;
  /* max-width: 1200px; */
  width: 100%;
  padding: 0 20px;
  margin-bottom: 150px;
}
/* 内容分栏容器 */
.monitor-content {
  display: flex;
  align-items: center;
  gap: 60px;
  flex-wrap: wrap;
  justify-content: center;
}
/* 左侧文字区 */
.monitor-text {
  flex: 1;
  min-width: 300px;
  max-width: 400px;
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.8s ease;
}
/* 标题样式 */
.monitor-title {
  font-size: 28px;
  font-weight: bold;
  color: #222;
  line-height: 1.3;
  margin-bottom: 20px;
}
.monitor-subtitle {
  font-size: 20px;
  font-weight: 600;
  color: #333;
  margin-bottom: 25px;
}
/* 监控列表 */
.monitor-list {
  list-style: none;
  padding: 0;
}
.monitor-item {
  font-size: 16px;
  color: #555;
  margin-bottom: 15px;
  position: relative;
  padding-left: 20px;
}
.monitor-item::before {
  content: "•";
  position: absolute;
  left: 0;
  color: #4e73df;
  font-size: 22px;
  line-height: 16px;
}
/* 右侧设备展示区 */
.monitor-device {
  flex: 1;
  min-width: 300px;
  max-width: 600px;
  opacity: 0;
  transform: translateX(30px);
  transition: all 0.8s ease 0.3s; /* 延迟0.3s渐入 */
}
.monitor-device img {
  width: 100%;
  border-radius: 8px;
  /* box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12); */
  transition: transform 0.5s ease;
}
/* 设备悬浮动效 */
.monitor-device:hover img {
  transform: scale(1.03);
}
/* 响应式适配（小屏幕下上下排列） */
@media (max-width: 768px) {
  body {
    display: block;
    padding: 60px 0;
  }
  .monitor-content {
    flex-direction: column;
    gap: 30px;
    text-align: center;
  }
  .monitor-item {
    text-align: left;
  }
}