.about-us-video{
  position: relative;
}

/* 视频背景 */
.video-bg{
  position: relative;
  width: 100%;
  height: 600px; /* 你可以调 */
  overflow: hidden;
}

.video-bg video{
  width:100%;
  height:100%;
  object-fit: cover;
}

/* 遮罩 */
.video-overlay{
  position:absolute;
  inset:0;
  background: rgba(0,0,0,0.35);
  z-index:2;
}

/* 统计数据层（你原来的ul） */
.about-us-video ul{
  position:absolute;
  z-index:3;
  bottom:40px;
  left:50%;
  transform: translateX(-50%);
  display:flex;
  gap:60px;
}
.about-us-video {
  margin-top: 200px;
  box-sizing: border-box;
  position: relative;
}

.about-us-video ul {
  position: absolute;
  top: -90px;
  /* right: 0; */
  width: 80%;
  /* max-width: 1440px; */
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: space-between;
  justify-content: space-between;
  -webkit-align-items: center;
  align-items: center;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
  height: 180px;
  background: var(--color-primary);
  z-index: 20;
}

.about-us-video ul li {
  width: 20%;
  display: flex;
  box-sizing: border-box;
  position: relative;
  text-align: left;
  flex-direction: column;
  flex-wrap: wrap;
  align-content: space-around;
}

.about-us-video ul li h5 {
  font-family: var(--title-font-family);
  color: #fff;
  font-size: 60px;
  line-height: 1;
  display: inline-block;
  position: relative;
  text-shadow: 1px 1px rgba(0, 0, 0, 0.2);
}

.about-us-video ul li h5::after {
  content: attr(date-txt);
  color: #fff;
  font-size: 20px;
  font-weight: 300;
  margin-left: 20px;
}

.about-us-video ul li p {
  font-size: 18px;
  line-height: 18px;
  overflow: hidden;
  color: #fff;
  margin: 15px 0 0;
}

.about-us-video .v {
  width: 100%;
  display: block;
  overflow: hidden;
  position: relative;
  z-index: 10;
}

.about-us-video .v img {
  transition: all 0.3s ease 0s;
  -webkit-transition: all 0.3s ease 0s;
}

.about-us-video .v .play {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 7.5%;
  aspect-ratio: 1/1;
  transform: translate(-50%, -50%);
  display: block;
}

.about-us-video .v:hover img {
  transform: scale(1.02);
  -webkit-transform: scale(1.02);
}

.about-us-video .txt {
  position: absolute;
  width: 490px;
  box-sizing: border-box;
  padding: 25px 22px;
  right: 5%;
  bottom: 40px;
  background: #fff;
  z-index: 15;
}

.about-us-video .txt h5 {
  font-size: 24px;
  color: var(--title-text-color);
  line-height: 36px;
}
.video_pic{
  width: 100% !important;
  object-fit: cover;
}
.about-us-video .txt h5 i {
  color: var(--color-primary);
  font-size: 30px;
  margin-right: 10px;
}

.about-us-video .txt p {
  font-size: 16px;
  color: var(--text-color);
  line-height: 36px;
  margin: 20px 0 0;
}

.about-us-video .bot {
  background: #f5f5f5;
}

.about-us-video .bot .wp {
  height: 120px;
  display: -webkit-flex;
  display: flex;
  -webkit-align-items: center;
  align-items: center;
}

.about-us-video .bot h5 {
  font-size: 30px;
  color: #000;
  font-weight: bold;
}

.about-us-video .bot h5 i {
  color: var(--color-primary);
  font-size: 30px;
  margin-right: 10px;
}

.about-us-video .bot .more {
  margin-left: 60px;
  width: 200px;
  height: 50px;
  line-height: 50px;
  background: var(--color-second);
  display: block;
  text-align: center;
  font-size: 18px;
  color: #fff;
  border-radius: var(--button-radius);
}

.about-us-video .bot .more:hover {
  background: var(--btn-hover);
}

@media screen and (max-width: 1500px) {
  .about-us-video .bot h5 {
    font-size: 24px;
  }

  .about-us-video ul li h5 {
    font-size: 48px;
  }

  .about-us-video ul li p {
    font-size: 16px;
  }

  .about-us-video .txt {
    width: 440px;
  }

  .about-us-video .txt h5 {
    font-size: 22px;
    line-height: 30px;
  }

  .about-us-video .txt p {
    font-size: 16px;
    line-height: 30px;
  }
}

@media screen and (max-width: 1150px) {
  .about-us-video .txt {
    width: 100%;
    padding: 25px 3%;
    position: static;
  }
}

@media screen and (max-width: 992px) {
  .video-bg{
      height:auto;
  }

  .video-bg video{
      position:static;
      width:100%;
      height:auto;
      display:block;
      object-fit:cover;
  }

  /* 统计区域 */
  .about-us-video{
      margin-top:0;
  }

  .about-us-video ul{
      position:static !important;
      top:auto !important;
      left:auto !important;
      transform:none !important;

      width:100% !important;
      height:auto !important;

      display:flex !important;
      flex-wrap:wrap !important;
      justify-content:center !important;
      align-items:stretch !important;

      padding:20px 10px;
      box-sizing:border-box;
  }

  .about-us-video ul li{
      width:50% !important;
      padding:20px 10px;
      text-align:center;

      display:flex;
      flex-direction:column;
      align-items:center;
      justify-content:center;
  }

  .about-us-video ul li h5{
      font-size:40px;
  }

  .about-us-video ul li h5::after{
      font-size:16px;
      margin-left:8px;
  }

  /* 删除这两段 */
  /*
  .about-us-video ul li:first-child h5::after {
      right:-60px;
  }

  .about-us-video ul li:nth-child(3) h5::after {
      right:-80px;
  }
  */

  .about-us-video ul li p{
      font-size:16px;
      text-align:center;
      line-height:24px;
      margin-top:10px;
  }

  .about-us-video .txt{
      position:static;
      width:100%;
      padding:25px 20px;
  }

  .about-us-video .txt h5{
      font-size:20px;
      line-height:30px;
  }

  .about-us-video .txt p{
      font-size:15px;
      line-height:24px;
      margin:15px 0 0;
  }

  .about-us-video .bot{
      padding:20px 0;
      text-align:center;
  }

  .about-us-video .bot .wp{
      height:auto;
      flex-direction:column;
  }

  .about-us-video .bot h5{
      font-size:24px;
  }

  .about-us-video .bot h5 i{
      display:none;
  }

  .about-us-video .bot .more{
      margin:20px auto 0;
      width:170px;
      height:40px;
      line-height:40px;
      font-size:16px;
  }
}
@media screen and (max-width: 480px) {
.about-us-video ul li p {
  text-align: center;
}
}
@media screen and (max-width:768px){

  .about-us-video{
      margin-top:0 !important;
  }

  .about-us-video ul{
      position:relative !important;
      top:0 !important;
      left:0 !important;
      transform:none !important;

      width:100% !important;
      height:auto !important;
      min-height:auto !important;

      display:flex !important;
      flex-wrap:wrap !important;
      justify-content:center !important;
      gap:0 !important;

      padding:20px 0 !important;
      margin:0 !important;
  }

  .about-us-video ul li{
      width:50% !important;
      padding:15px 10px !important;
      text-align:center !important;
      align-items:center !important;
      justify-content:center !important;
  }

  .about-us-video ul li h5{
      font-size:32px !important;
  }

  .about-us-video ul li h5::after{
      font-size:14px !important;
      margin-left:5px !important;
  }

  .about-us-video ul li p{
      font-size:14px !important;
      line-height:20px !important;
      text-align:center !important;
  }

  .video-bg{
      height:auto !important;
  }

  .video-bg video{
      width:100% !important;
      height:auto !important;
      display:block !important;
      object-fit:cover !important;
  }
}