.container {
  width: 1200px;
  padding-right: 0px;
  padding-left: 0px;
  margin: 0 auto;
}
.header-banner-line {
  margin-top: 40px;
  width: 152px;
  height: 48px;
  line-height: 48px;
  text-align: center;
  font-family: PingFangSC-Regular;
  font-size: 16px;
  color: #ffffff;
  font-weight: 400;
  background-color: #ffae0f;
  border-radius: 4px;
  cursor: pointer;
}
.assignment-block1 {
  width: 100%;
  height: 550px;
}
.assignment-block1-banner-bg {
  width: 100%;
  height: 550px;
  background-image: url('../assets/product/product-banner-bg.jpg');
  background-repeat: no-repeat !important;
  background-size: 100% 100% !important;
  -moz-background-size: 100% 100% !important;
}

.assignment-block1-content {
  float: left;
  margin-top: 160px;
  width: 500px;
}
.assignment-block1-banner-content {
  float: right;
  margin-top: 131px;
  width: 560px;
  height: 360px;
  background-repeat: no-repeat !important;
  background-size: 100% 100% !important;
  -moz-background-size: 100% 100% !important;
}
.assignment-block1-banner-content img {
  width: 100%;
}
.assignment-block1-title {
  font-family: PingFangSC-Medium;
  font-size: 40px;
  color: #ffffff;
  font-weight: 500;
}
.assignment-block1-introduce {
  margin-top: 20px;
  width: 484px;
  font-family: PingFangSC-Regular;
  font-size: 16px;
  color: #ffffff;
  line-height: 30px;
  font-weight: 400;
}
.assignment-block1-line {
  margin-top: 40px;
  width: 64px;
  height: 2px;
  border-bottom: 2px solid #fff;
}

.assignment-block2 {
  padding: 80px 0;
  background: #F4F6FA;
}
.assignment-block2-title {
  font-family: PingFangSC-Semibold;
  font-size: 36px;
  color: #333333;
  text-align: center;
  line-height: 44px;
  font-weight: 600;
  margin-bottom: 40px;
}
.assignment-block2-content {
  font-family: PingFangSC-Regular;
  font-size: 24px;
  color: #333333;
  text-align: center;
  line-height: 32px;
  font-weight: 400;
}
.assignment-block2-bg {
  margin-top: 60px;
  width: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100%;
  padding-top: 55%;
}

.assignment-block3 {
  padding: 80px 0;
}
.assignment-block3-title {
  font-family: PingFangSC-Semibold;
  font-size: 36px;
  color: #333333;
  text-align: center;
  line-height: 44px;
  font-weight: 600;
}
.product_d1 {
  padding: 80px 0px 80px;
}
.product_d2 {
  position: relative;
  z-index: 5;
}
.product_d2 p {
  font-size: 30px;
  text-align: center;
  color: #2e2f34;
  line-height: 42px;
  letter-spacing: 2px;
  font-weight: 700;
}
.product_d3 {
  width: 100%;
  overflow: hidden;
  position: relative;
  margin-top: 65px;
}
.product_d3 ul {
  position: relative;
  z-index: 2;
  text-align: center;
  font-size: 0px;
}
.product_d3 ul li {
  display: inline-block;
  margin: 0 30px;
  cursor: pointer;
}
.product_d3 ul li p {
  font-size: 20px;
  color: #2e2f34;
  line-height: 26px;
  padding: 22px 0px;
}
.product_d3 ul li span {
  display: block;
  border-bottom: 2px solid #3255fa;
  width: 0px;
  transition: all 0.3s;
  margin: 0 auto;
}
.product_d3 ul li:hover p,
.product_d3 ul li.on p {
  color: #3255fa;
}
.product_d3 ul li:hover span,
.product_d3 ul li.on span {
  width: 57px;
  max-width: 100%;
}
.product_d4 {
  position: absolute;
  bottom: 0%;
  left: 0px;
  width: 100%;
  border-bottom: 1px solid #e7e7e7;
  z-index: 1;
}
.assignment-block3-content {
  margin-top: 80px;
  border-radius: 4px;
}
.assignment-block3-content ul {
  display: flex;
  justify-content: space-between;
  flex-wrap: nowrap;
}
.assignment-block3-content ul li {
  width: 30%;
}

.assignment-block3-content-item .cent {
  width: 374px;
  height: 240px;
  background: #f7fbfc;
  overflow: hidden;
}
.assignment-block3-content-item .cent .title {
  margin: 40px 24px 0;
  font-family: PingFangSC-Medium;
  font-size: 24px;
  color: #0088d2;
  line-height: 32px;
  font-weight: 500;
}
.assignment-block3-content-item .cent .des {
  margin: 20px 24px 40px 24px;
  font-family: PingFangSC-Regular;
  font-size: 20px;
  color: #333333;
  line-height: 36px;
  font-weight: 400;
}
.assignment-block3-content-item {
  width: 100%;
}
.assignment-block3-content-item .img img {
  width: 374px;
  height: 240px;
}

ul li {
  margin: 0px;
  padding: 0px;
  list-style: none;
}