* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
dl,
ol,
ul {
  list-style: none;
}
body,
html {
  font-family: PingFang;
  letter-spacing: 0.5px;
  background-color: #fff;
  font-size: 12px;
}

.opti-box {
  background: #fff;
}

.opti-head {
  display: flex;
}

.opti-head-info {
  max-width: 1340px;
}

.opti-head-tips {
  width: 955px;
  height: 18px;
  background: #fff7e3;
  margin-top: 77px;
  margin-left: 125px;
}

.opti-head-tips p {
  font-family: PingFangSC, PingFang SC;
  font-weight: 600;
  font-size: 27px;
  color: #3d7dfe;
  padding-left: 23px;
  position: absolute;
  margin-top: -18px;
}

.opti-head-title {
  margin-left: 167px;
  margin-top: 39px;
  display: flex;
  align-items: center;
}

.opti-head-title img {
  width: 85px;
  height: 85px;
  margin-right: 17px;
}

.opti-head-title span {
  font-family: PingFangSC, PingFang SC;
  font-weight: 600;
  font-size: 20px;
  color: #343237;
}

.opti-title {
  display: flex;
  align-items: center;
  margin-left: 121px;
  margin-top: 83px;
  margin-bottom: 34px;
}

.opti-title img {
  width: 40px;
  height: 40px;
}

.opti-title span {
  font-family: PingFangSC, PingFang SC;
  font-weight: 600;
  font-size: 23px;
  color: #ff8f32;
  margin-left: 23px;
}

.function-introduction {
  display: flex;
  flex-wrap: wrap;
  margin-left: 184px;
}

.function-introduction li {
  max-width: 333px;
  margin-bottom: 28px;
  margin-right: 50px;
}

.function-introduction-title {
  font-family: PingFangSC, PingFang SC;
  font-weight: 600;
  font-size: 19px;
  color: #4f4e4e;
  line-height: 26px;
  min-height: 52px;
}

.function-introduction-info {
  font-family: PingFangSC, PingFang SC;
  font-weight: 400;
  font-size: 19px;
  color: #707070;
  line-height: 26px;
  margin-top: 20px;
  min-height: 187px;
}

.phone {
  width: 384px;
  height: 755px;
  margin-top: 124px;
}

.features {
  margin-left: 184px;
  display: flex;
}

.features li {
  max-width: 333px;
  margin-right: 49px;
}

.features-title {
  font-family: PingFangSC, PingFang SC;
  font-weight: 600;
  font-size: 19px;
  color: #4f4e4e;
  line-height: 26px;
  min-height: 52px;
  margin-bottom: 20px;
}

.features-info {
  font-family: PingFangSC, PingFang SC;
  font-weight: 400;
  font-size: 19px;
  color: #707070;
  line-height: 26px;
}

.evaluate {
  margin-left: 184px;
  display: flex;
}

.evaluate li:nth-child(1) {
  background: url("../img/step1.png") no-repeat;
  margin-right: 85px;
  width: 286px;
  min-height: 184px;
  background-size: 100% 100%;
}

.evaluate li:nth-child(2) {
  background: url("../img/step2.png") no-repeat;
  margin-right: 58px;
  width: 418px;
  min-height: 184px;
  background-size: 100% 100%;
}

.evaluate li:nth-child(3) {
  background: url("../img/step3.png") no-repeat;
  width: 323px;
  min-height: 184px;
  background-size: 100% 100%;
}

.evaluate-text {
  padding: 13px 13px 0px 13px;
  font-family: PingFangSC, PingFang SC;
  font-weight: 400;
  font-size: 13px;
  color: #545454;
  line-height: 18px;
}

.evaluate-name {
  font-family: PingFangSC, PingFang SC;
  font-weight: 400;
  font-size: 13px;
  color: #545454;
  line-height: 18px;
  padding-right: 13px;
  text-align: right;
}

.footer {
  margin-top: 48px;
  background: #dce9ff;
  margin-bottom: 29px;
  height: 117px;
  display: flex;
  align-items: center;
}

.footer div:nth-child(1) {
  font-family: PingFangSC, PingFang SC;
  font-weight: 400;
  font-size: 22px;
  color: #000000;
  padding-left: 191px;
}

.footer div:nth-child(2) {
  font-family: PingFangSC, PingFang SC;
  font-weight: 400;
  font-size: 22px;
  color: #000000;
  line-height: 30px;
  margin-left: 120px;
}