.main-container {
  margin-bottom: 0;
}

.introduceSection {
  width: 1280px;
  justify-content: space-between;
  flex-wrap: nowrap;
}

.introduceSection>div:first-child {
  flex: 0 0 671px;
}

.introduceSection>div:last-child {
  background: url(./../images/prouducts/title_product.png) no-repeat center / 600px 600px;
}

h2.h2{
  margin: 0 0 32px 0;
}

.introduceSection .h1{
  font-size: 72px;
  margin: 0;
  line-height: 1.2;
}

.introduceSection .sub{
  margin-bottom: 24px;
}

.introduceSection .subtitle{
  font-size: 40px;
  margin: 0 0 24px 0;
  font-weight: bold;
  color: var(--color-normal);
}

.symbol {
  font-size: 30px;
  line-height: 53px;
  vertical-align: text-top;
  padding: 0 5px;
}

.inline {
  display: inline-block;
}

.introduceSection .h1,
.introduceSection .inline {
  white-space: nowrap;
}

.introduceSection .sub {
  font-weight: bold;
  font-size: 30px;
  color: var(--color-hover);
}

.introduceSection2 {
  height: 680px;
}

.introduceSection2 > div {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 680px;
  text-align: center;
  color: #fff;
  text-shadow: 1px 2px 6px #000B43;
}

.introduceSection2 > div.mobile {
  background: url(./../images/prouducts/img_product_v2.png) ;
  background-position: center !important;
}

.introduceSection2>div>.title{
  font-size: 48px;
  font-weight: bold;
  margin-bottom: 32px;
}

.introduceSection2>div>.description{ 
  font-size: 24px;
}

.introduceSection3{
  text-align: center;
  color: var(--color-normal);
}

.introduceSection3 .description {
  width: 100%;
  max-width: 520px;
  margin: auto;
  font-size: var(--base-font-lg-size);
}

.introduceSection3>.feature-layout{
  display: flex;
  flex-wrap: wrap;
  padding: 76px 0 16px 0;
}

.introduceSection3>.feature-layout2{
  justify-content: center;
  padding: 0;
}

.introduceSection3>.feature-layout>div{
  flex: 1 0 25%;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  color:#5F6062;
}

.introduceSection3>.feature-layout2>div{
  flex: 0 0 30%;
}

.introduceSection3>.feature-layout>div:nth-child(-n+4){
  margin: 0 0 60px 0;
}

.introduceSection3>.feature-layout2>div:nth-child(-n+3) {
  margin: 0 0 30px 0;
}

.introduceSection3>.feature-layout>div:nth-child(6){
  width: 350px;
}

.introduceSection3>.feature-layout .icomoon {
  font-size: 88px;
  vertical-align: text-top;
  margin: 0 0 40px 0;
  color:  var(--color-hover);
}

.introduceSection3>.feature-layout .title{
  font-size: 24px;
  font-weight: bold;
  margin: 0 0 24px 0;
}

.introduceSection3>.feature-layout .description{
  font-size: 16px;
  line-height: 2;
  margin: 0;
}

.introduceSection4 {
  padding: 40px 24px 40px 0;
  display: flex;
  align-items: center;
  background: linear-gradient(99deg, #fff 0%, #fff 0%, #f0f6fe 36%, #f6f9fe 91%, #fff 100%) 0% 0% no-repeat padding-box;
}

.introduceSection4 .flexImg>img {
  max-width: 500px;
  width: 100%;
  margin-right: 56px;
}

.introduceSection4 p {
  color: var(--color-normal);
  font-size: var(--base-font-lg-size);
  max-width: 700px;
}

.introduceSection5 {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 128px;
}

.introduceSection5>div {
  flex: 0 0 530px;
  font-size: var(--base-font-lg-size);
}

.introduceSection5 img {
  max-width: 700px;
  width: 100%;
}

.introduceSection5 .dot-list {
  font-size: 24px;
  text-align: left;
}

.dot-list  li {
  list-style-type: none;
  display: flex;
  align-items: flex-start;
  color: var(--color-normal);
}

.introduceSection5 .dot-list li::before {
  content: "\2022";
  font-weight: bold;
  display: inline-block;
  width: 15px;
  color: var(--color-normal);
  font-size: 18px;
  vertical-align: text-top;
  line-height: 32px;
}

.introduceSection5 .dot-list li {
  margin-top:20px;
}

@media screen and (max-width: 1480px) {
  .introduceSection {
    width: auto;
    justify-content: center;
  }
}

@media screen and (max-width: 1280px) {
  .introduceSection {
    flex-wrap: wrap;
  }

  .introduceSection>div:first-child {
    flex: 1 0 100%;
  }

  .introduceSection>div:last-child {
    background: none;
  }

  .introduceSection>div:last-child::after {
    background: url(./../images/prouducts/title_product.png) no-repeat center / 600px 600px;
  }

  .introduceSection4 p {
    max-width: 900px;
  }
}

@media screen and (max-width: 1200px) {
  .introduceSection {
    flex-wrap: wrap;
  }

  .introduceSection2 .title, .introduceSection2 .description{
    margin: 0 15px;
  }

  .introduceSection3>.feature-layout {
    padding: 56px 0 0 0;
  }

  .introduceSection3>.feature-layout2 {
    padding: 0;
  }

  .introduceSection3>.feature-layout>div:nth-child(-n+7),
  .introduceSection3>.feature-layout2>div:nth-child(-n+7) {
    flex: 1 0 100%;
    margin: 0 0 60px 0;
  }

  .introduceSection3>.feature-layout .icomoon {
    margin: 0 0 24px 0;
  }

  .introduceSection3>.feature-layout .title {
    margin: 0 0 16px 0;
  }

  .introduceSection4 .flexImg>img {
    margin-right: 0;
  }

  .introduceSection4,
  .introduceSection5 {
    flex-direction: column;
    padding: 40px 15px;
  }

  .introduceSection5>div {
    flex: 0 0 auto;
    width: 100%;
    max-width: 530px;
  }
}

@media screen and (max-width: 720px) {
  h2.h2{
    font-size: 40px;
  }

  .introduceSection3>.feature-layout>div:nth-child(-n+7),
  .introduceSection3>.feature-layout2>div:nth-child(-n+7) {
    margin: 0 0 40px 0;
  }

  .introduceSection3>.feature-layout2>div:nth-child(3) {
    margin: 0 0 20px 0;
  }
}

@media screen and (max-width: 600px) {
  .introduceSection .h1{
    font-size: 60px;
  }

  .introduceSection>div:last-child::after {
    background-size: cover !important;
  }

  .modal {
    width: calc(100% - 30px);
  }
}

@media screen and (max-width: 480px) {
  .symbol {
    vertical-align: top;;
    padding: 0 12px;
  }

  .introduceSection .h1{
    font-size: 48px;
  }

  .introduceSection .subtitle {
    font-size: 36px;
  }

  .introduceSection .sub{
    font-size: 24px;
    white-space: nowrap;
  }

  .introduceSection2>div>.title {
    font-size: 40px;
    margin-bottom: 48px;
  }

  .introduceSection5 .dot-list li::before {
    width: 24px;
  }
}

@media screen and (max-width: 374px) {
  .introduceSection{
    word-break: break-all;
  }

.introduceSection .sub,.introduceSection .h1, .introduceSection .inline{
    white-space: normal;
  }
}