/* ===== 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;
}

/* ===== sec2.features .wh1200.items1 ===== */
.sec2.features .wh1200.items1 {
  display: flex;
  flex-direction: row;
  gap: 32px;
  margin-bottom: 48px;
}
.sec2.features .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);
}
.sec2.features .wh1200.items1 .item .item-header {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  padding: 40px 0 24px 0;
}
.sec2.features .wh1200.items1 .item .item-header .item-img {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
}
.sec2.features .wh1200.items1 .item .item-header .item-title {
  font-size: 20px;
  line-height: 1.4;
  color: #004BE1;
}
.sec2.features .wh1200.items1 .item .item-content {
  padding: 0 32px;
}
.sec2.features .wh1200.items1 .item .item-content .item-description {
  color: #333;
  font-size: 16px;
  line-height: 1.4;
  text-align: center;
}

/* ===== sec3.advantages .wh1200.items1 ===== */
.sec3.advantages .wh1200.items1 {
  /* 父级无额外样式，保留选择器 */
}
.sec3.advantages .wh1200.items1 .item {
  flex: 1;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  margin-bottom: 30px;
}
.sec3.advantages .wh1200.items1 .item img {
  object-fit: cover;
  margin: 40px auto 0;
}

/* ===== sec4.scenes .wh1200.items1 ===== */
.sec4.scenes .wh1200.items1 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 48px;
}
.sec4.scenes .wh1200.items1 .item {
  display: flex;
  flex-direction: row;
  align-items: start;
  height: 152px;
  gap: 12px;
  border-radius: 16px;
  box-shadow: 0 4px 9px 3px rgba(0, 75, 225, 0.1);
  padding: 32px 0 32px 32px;
}
.sec4.scenes .wh1200.items1 .item .item-img {
  flex-shrink: 0;
}
.sec4.scenes .wh1200.items1 .item .item-img img {
  object-fit: cover;
}
.sec4.scenes .wh1200.items1 .item .item-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
  align-items: flex-start;
  justify-content: center;
}
.sec4.scenes .wh1200.items1 .item .item-content .item-title {
  color: #004BE1;
  font-size: 22px;
  line-height: 1.4;
  margin-bottom: 6px;
}
.sec4.scenes .wh1200.items1 .item .item-content .item-sub-title {
  color: #333333;
  font-size: 18px;
  line-height: 1.4;
}
.sec4.scenes .wh1200.items1 .item .item-content .item-description {
  color: #333333;
  font-size: 16px;
  line-height: 1.4;
  padding-right: 10px;
}