/* ===== sec1.introduction ===== */
.sec1.introduction .wh1200.items1 {
  /* 父级无额外样式，保留选择器 */
}
.sec1.introduction .wh1200.items1 .item {
  flex: 1;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
}
.sec1.introduction .wh1200.items1 .item img {
  object-fit: cover;
  margin: 40px auto 0;
}

/* ===== sec3.advantages ===== */
.sec3.advantages .wh1200.items1 {
  display: flex;
  flex-direction: row;
  gap: 32px;
}
.sec3.advantages .wh1200.items1 .item {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: white;
  height: 300px;
  color: white;
  border-radius: 16px;
  box-shadow: 0 4px 9px 3px rgba(0, 75, 225, 0.1);
}
.sec3.advantages .wh1200.items1 .item .item-header {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  padding: 40px 0 24px 0;
}
.sec3.advantages .wh1200.items1 .item .item-header .item-img {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
}
.sec3.advantages .wh1200.items1 .item .item-header .item-title {
  font-size: 20px;
  line-height: 1.4;
  color: #004BE1;
}
.sec3.advantages .wh1200.items1 .item .item-content {
  padding: 0 32px;
}
.sec3.advantages .wh1200.items1 .item .item-content .item-description {
  text-align: center;
  color: #333;
  font-size: 16px;
  line-height: 1.4;
}

/* ===== sec4.scenes ===== */
.sec4.scenes .wh1200.items1 {
  display: flex;
  flex-direction: row;
  gap: 32px;
  margin-bottom: 48px;
}
.sec4.scenes .wh1200.items1 .item {
  flex: 1;
  display: flex;
  flex-direction: row;
  background-color: white;
  align-items: center;
  height: 452px;
  color: white;
  border-radius: 16px;
  box-shadow: 0 4px 9px 3px rgba(0, 75, 225, 0.1);
}
.sec4.scenes .wh1200.items1 .item .item-header {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  padding: 40px;
}
.sec4.scenes .wh1200.items1 .item .item-header .item-img {
  width: 495px;
  height: 365px;
  flex-shrink: 0;
}
.sec4.scenes .wh1200.items1 .item .item-header .item-title {
  font-size: 20px;
  line-height: 1.4;
  color: #333333;
}
.sec4.scenes .wh1200.items1 .item .item-content {
  flex-shrink: 0;
  padding: 0 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sec4.scenes .wh1200.items1 .item .item-content .item-title {
  font-size: 16px;
  line-height: 1.4;
  color: #333333;
}
.sec4.scenes .wh1200.items1 .item .item-content .item-title:before {
  content: '';
  position: relative;
  left: -8px;
  top: 2px;
  display: inline-block;
  width: 4px;
  border-radius: 8px;
  height: 16px;
  background-color: #004BE1;
  box-shadow: 0 4px 9px 3px rgba(0, 75, 225, 0.1);
}
.sec4.scenes .wh1200.items1 .item .item-content .item-description {
  text-align: center;
  color: #666666;
  font-size: 16px;
  line-height: 1.4;
}