.header {  background: #111315;}.ga {   background-position: top left;  width: 100%;  background-size: 100%;  height: 100%;  background-size: cover;  background-repeat: repeat-x;}.gag {  display: flex;  max-width: 1300px;  margin: 0 auto;  justify-content: space-between;  align-items: center;}.logo {  font-family: Poppins, Poppins;  font-weight: 600;  font-size: 30px;  color: #ffffff;  line-height: 48px;}.back-to-top {    border: none;    background: none;    position: fixed;    right: 100px;    font-size: 24px;    line-height: 40px;    border-radius: 50%;    bottom: 200px;    display: none;    z-index: 10;    cursor: pointer;}.ull {  display: flex;}.ul_lhome {  display: none;}.ull li {  padding: 24px;  font-family: Poppins, Poppins;  font-weight: 600;  font-size: 16px;  color: #ffffff;  line-height: 24px;}.ull li span {  width: 8px;  height: 8px;  display: inline-block;  margin-right: 8px;  background: #99ee2d;}.ull li a {  display: flex;  align-items: center;}.ictegory2 {  display: none;}@media (max-width: 1380px) {  .gag {    width: 95%;  }}@media (max-width: 900px) {  .ga {      background-size: auto;  }  .ictegory2 {    display: block;  }  .ul_li {    display: none;  }  .ul_lhome {    display: block;  }  .icon-home3:before {    font-size: 24px;    color: #ffdf40;  }  .icon-search:before,  .icon-category2:before {    font-size: 24px;    color: #ffdf40;  }  .icon-search:before {    color: #ffdf40;  }}@media (max-width: 750px) {  .icon-search:before {    font-size: 16px;  }  .ull li {    padding: 12px;  }  .icon-search:before {    font-size: 24px;  }  .logo {    font-size: 18px;    line-height: 28px;    }  .icon-home3:before,  .icon-category2:before,  .icon-search:before {    font-size: 20px;    font-weight: 100;  }  .ga {    background-size: cover;  }}/* 遮罩 */.overlay {  display: none;}.overlay {  display: block;  opacity: 0;  visibility: hidden;  position: absolute;  top: 0;  left: 0;  width: 100%;  background: rgba(0, 0, 0, 0.5);  z-index: 1000;  transition: opacity 0.5s, visibility 0.5s;  -webkit-transition: opacity 0.5s, visibility 0.5s;  -moz-transition: opacity 0.5s, visibility 0.5s;  -ms-transition: opacity 0.5s, visibility 0.5s;  -o-transition: opacity 0.5s, visibility 0.5s;}.overlay.visible {  opacity: 1;  visibility: visible;}.overlay-content {  position: fixed;  top: 0;  left: -300px;  width: 100%;  height: 100%;  transition: transform 0.5s;  transform: translateX(-100%);  background: #111315;  padding: 24px;}.overlay.visible .overlay-content {  transform: translateX(0);  left: 0;}.shohui {  display: flex;  padding-top: 30px;  padding-right: 30px;  justify-content: flex-end;}.icon-close-0605:before {  font-size: 26px;  background: #fff;  border-radius: 50%;}.usho {  padding-left: 20px;}.usho li {  padding: 10px 0;  font-family: Poppins, Poppins;  font-weight: 600;  font-size: 24px;  color: #ffffff;  line-height: 36px;}.usho li span {  width: 8px;  height: 8px;  display: inline-block;  margin-right: 8px;  background: #99ee2d;}.usho li a {  display: flex;  align-items: center;}@media (max-width: 640px) {  .overlay-content {    padding: 5px;  }  .ddd {    max-width: 50% !important;  }  .usho li {    font-size: 16px;    line-height: 24px;  }}@media (max-width: 344px) {  .ull li {    margin: 6px 8px;  }}