/* 展示栏开始 */
.middle {
  /* overflow: hidden; */
}

.display_bar {
  height: 700px;
  width: 100%;
  background: url(https://sz-file-ssl.sanzhisoft.com/website/img/anli_banner_1.png) no-repeat center;
  text-align: center;
  padding-top: 300px;
  transition: all 1.5s ease-in-out;
  transform: scale(1.5);
  background-size: 100% 100%;
}

.display_bar h1 {
  font-size: 39px;
  font-family: "I-2-65";
  margin-bottom: 22px;
  color: #FFFFFF;
  transition: all 2s ease-in-out;
  transform: scale(0.5);
  opacity: 0;
}

.display_bar h3 {
  font-size: 20px;
  font-family: "I-2-45";
  color: #FFFFFF;
  transition: all 2.5s ease-in-out;
  transform: scale(0.5);
  opacity: 0;
}

.change {
  transform: scale(1);
}

.change h1 {
  transform: scale(1);
  opacity: 1;
}

.change h3 {
  transform: scale(1);
  opacity: 1;
}

/* 展示栏结束 */


/* 服务介绍开始 */
.service_introduce {
  text-align: center;
}

.service_introduce img {
  width: 100%;
}

.service_introduce .introduce_top {
  padding: 70px 0;
}

.service_introduce .introduce_top h3 {
  font-size: 28px;
  color: #2C3C4D;
  font-family: "I-2-65";
}

.service_introduce .introduce_top h5 {
  margin: 15px 0 30px;
  font-size: 16px;
  color: #647D94;
  font-family: "I-2-45";
}

.service_introduce .introduce_top p {
  margin: auto;
  width: 1025px;
  margin-top: 20px;
  font-size: 16px;
  color: #2C3C4D;
  font-family: "I-2-45";
  line-height: 36px;
}

.introduction {
  padding: 100px 0;
  background: #F6F9FB;

}

.AIhtml {
  padding-top: 100px;
  padding-bottom: 37px;
  padding-left: 0px;
  padding-right: 0px;
}

.introduce_middle,
.introduce_bottom {
  height: auto;
  /* overflow: hidden; */
  max-height: 600px;
  width: 1200px;
  margin: auto;
}

.introduce_img,
.introduce_text {
  width: 50%;
  display: inline-block;
  vertical-align: top;

}

.introduce_middle .introduce_text {
  padding: 39px 0 0 80px;
  text-align: left;
}

.introduce_text h5 {
  font-size: 28px;
  color: #2C3C4D;
  font-family: "I-2-65";
}

.introduce_text p {
  margin-top: 20px;
  font-size: 16px;
  color: #647D94;
  font-family: "I-2-55";
  width: 500px;
  line-height: 36px;
}

.introduce_bottom .introduce_text {
  padding: 50px 0 0 0px;
  text-align: left;
}

/* 服务介绍结束 */

/* 联系我们开始 */
.contact_us {
  width: 100%;
  height: 470px;
  overflow: hidden;
  position: relative;

}

.contact_us video {
  width: 100%;
}

.contact_us .contact_us_content {
  width: 100%;
  height: 100%;
  background: rgba(21, 72, 76, 0.3);
  position: absolute;
  top: 0;
  left: 0;
  text-align: center;
  padding-top: 120px;
  z-index: 99999;
}

.contact_us video {
  filter: brightness(0.8) contrast(1.2) saturate(1.5) grayscale(0.5);
}

.contact_us .contact_us_content h1 {
  font-family: "I-2-65";
  font-size: 36px;
  color: #FFFFFF;
}

.contact_us .contact_us_content h2 {
  font-family: "I-2-45";
  font-size: 18px;
  color: #FFFFFF;
  margin: 30px 0 60px;
}

.contact_us .contact_us_content button {
  width: 300px;
  height: 72px;
  background: #2E9FFF;
  border: 1px solid #2E9FFF;
}

.contact_us .contact_us_content button span {
  font-size: 20px;
  color: #FFFFFF;
}

.contact_us .contact_us_content button img {
  position: relative;
  bottom: 6px;
  left: 6px;
}

.introduce_text img {
  position: relative;
  bottom: 60px;
  width: 500px;

}

.introduce_img_right img {

  width: 800px;

  position: relative;
  right: 430px;

}

.introduce_img_left img {
  position: relative;
  bottom: 57px;
  width: 400px;
  left: 195px;
}

.contentImg {
  position: relative;
  bottom: 60px;

}

.leftcontentImg {
  position: relative;
  left: 20px;
  margin: 0px;
  padding: 0 !important;
  top: 40px;
}

.leftcontentImg p {
  margin-top: 0 !important;
}

/* .leftcontentImg p{
  margin-top: 0;
} */

/* 算法清单样式 */
.algorithm-list {
  background: #ffffff;
  padding: 40px;
  margin:0 auto 40px auto;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  max-width: 1200px;
}

.algorithm-list h5 {
  font-size: 24px;
  color: #2C3C4D;
  font-family: "I-2-65";
  margin-bottom: 30px;
  text-align: center;
}

.algorithm-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.algorithm-item {
  font-size: 14px;
  color: #647D94;
  font-family: "I-2-45";
  padding: 10px 15px;
  background: #F6F9FB;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.algorithm-item:hover {
  background: #E8F1F5;
  transform: translateY(-2px);
}
/* 联系我们结束 */