:root {
  --qing-mul-pic-text-title-size: 32px;
  --qing-mul-pic-text-p-size: 16px;
  --pic-side-margin: 40px;
}

.qing_mul_pic_text ul {
  margin: 0 auto;
  padding: 0;
  list-style: none;
  max-width: 1500px;
}

.qing_mul_pic_text ul li {
  display: flex;
  margin: 0;
  padding: 0;
  width: 100%;
  align-items: center;
  box-sizing: border-box;
}

.qing_mul_pic_text ul li>div {
  flex: 1;
  width: 50%;
  box-sizing: border-box;
}

.qing_mul_pic_text ul li:nth-child(2n) { 
  flex-direction: row-reverse;
  -webkit-flex-direction: row-reverse;
}

.qing_mul_pic_text ul li .txt {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 20px; 
}

.qing_mul_pic_text ul li .txt .box {
  width: 580px;
  max-width: 100%; 
  margin: auto;
  box-sizing: border-box;
}

.qing_mul_pic_text ul li .txt h2{
  font-family: var(--title-font-family);
  font-size: var(--qing-mul-pic-text-title-size);
}

.qing_mul_pic_text ul li .txt p {
  font-size: var(--qing-mul-pic-text-p-size);
  margin-top: 20px;
  line-height: 1.4;
  color: #222;
}

.qing_mul_pic_text .pic {
  max-height: 600px; 
  aspect-ratio: 952/598; 
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  box-sizing: border-box;
  margin-left: var(--pic-side-margin);
  margin-right: 0;
}

.qing_mul_pic_text ul li:nth-child(even) .pic {
  justify-content: flex-start;
  margin-left: 0;
  margin-right: var(--pic-side-margin);
}

.qing_mul_pic_text .pic img {
  width: calc(100% - var(--pic-side-margin)); 
  height: 100%;
  object-fit: contain; 
  box-sizing: border-box;
}

@media screen and (max-width: 1500px) {
  :root {
    --qing-mul-pic-text-title-size: 32px;
    --qing-mul-pic-text-p-size: 16px;
    --pic-side-margin: 35px;
  }
  .qing_mul_pic_text ul li .txt .box {
    width: 480px;
  }
}

@media screen and (max-width: 1280px) {
  :root {
    --qing-mul-pic-text-title-size: 28px;
    --qing-mul-pic-text-p-size: 16px;
    --pic-side-margin: 30px;
  }
  .qing_mul_pic_text ul li .txt .box {
    width: 420px;
  }
}

@media screen and (max-width: 1200px) {
  :root {
    --qing-mul-pic-text-title-size: 28px;
    --qing-mul-pic-text-p-size: 14px;
    --pic-side-margin: 25px;
  }
  .qing_mul_pic_text ul li .txt .box {
    width: 320px;
  }
}

@media screen and (max-width: 992px) {
  :root {
    --qing-mul-pic-text-title-size: px;
    --qing-mul-pic-text-p-size: 26px;
    --pic-side-margin: 0;
  }
  .qing_mul_pic_text ul {
    padding: 0 64px;
  }
  .qing_mul_pic_text ul li {
    display: block;
    align-items: normal;
  }
  .qing_mul_pic_text .pic,
  .qing_mul_pic_text ul li:nth-child(even) .pic {
    margin: 0;
    justify-content: center;
  }
  .qing_mul_pic_text .pic img {
    width: 100%;
    object-fit: contain;
  }
  .qing_mul_pic_text ul li>div {
    width: 100%;
  }
  .qing_mul_pic_text ul li .txt .box {
    width: 100%;
    margin-top: 30px;
  }
  .qing_mul_pic_text ul li .txt p {
    margin: 10px 0 30px 0;
  }
  .qing_mul_pic_text .pic {
    max-height: none;
    width: 100%;
  }
}

@media screen and (max-width: 768px) {
  :root {
    --qing-mul-pic-text-title-size: 24px;
    --qing-mul-pic-text-p-size: 16px;
  }
  .qing_mul_pic_text ul {
    padding: 0 32px;
  }
}

@media screen and (max-width: 576px) {
  :root {
    --qing-mul-pic-text-title-size: 24px;
    --qing-mul-pic-text-p-size: 14px;
  }
  .qing_mul_pic_text ul {
    padding: 0 20px;
  }
}