@font-face {  font-family: "DIN Alternate Bold";  src: url("../images/din_alternate_bold-webfont.eot");  src: url("../images/din_alternate_bold-webfont.eot") format("embedded-opentype"), url("../images/din_alternate_bold-webfont.woff2") format("woff2"), url("../images/din_alternate_bold-webfont.woff") format("woff"), url("../images/din_alternate_bold-webfont.ttf") format("truetype"), url("../images/din_alternate_bold-webfont.svg") format("svg");}.daetool-header-box {  position: fixed;  top: 0;  left: 50%;  -webkit-transform: translateX(-50%);  -ms-transform: translateX(-50%);  -moz-transform: translateX(-50%);  -o-transform: translateX(-50%);  transform: translateX(-50%);  z-index: 2025;  width: 100%;  height: 64px;  background: #000;  border-bottom: 1px solid rgba(255, 255, 255, 0.1);  box-sizing: border-box;}.daetool-header-box.hide {  display: none;}.daetool-header-box .daetool-header-content {  display: flex;  flex-wrap: nowrap;  flex-direction: row;  align-items: center;  justify-content: space-between;  width: 1200px;  margin: 0 auto;  height: 64px;  position: relative;  z-index: 3;}.daetool-header-box .daetool-header-content .daetool-header-left a {  display: flex;  flex-wrap: nowrap;  flex-direction: row;  align-items: center;  justify-content: flex-start;}.daetool-header-box .daetool-header-content .daetool-header-left a img {  width: 138px;  height: 34px;}.daetool-header-box .daetool-header-content .daetool-header-right {  display: flex;  flex-wrap: nowrap;  flex-direction: row;  align-items: center;  justify-content: flex-start;  gap: 40px;}.daetool-header-box .daetool-header-content .daetool-header-right > a.daetool-header-right-store {  position: relative;  width: 76px;  height: 34px;  background: linear-gradient(193.7deg, rgba(254, 52, 110, 0.0001) 21.43%, #fe346e 109.98%), linear-gradient(230.42deg, #ff8d43 -18.88%, #ff771d 38.16%, #ff7519 86.42%, #ff7317 92.61%);  border-radius: 6px;}.daetool-header-box .daetool-header-content .daetool-header-right > a.daetool-header-right-store span {  position: absolute;  left: 20.5px;  top: 4.5px;  font-family: "Microsoft YaHei";  font-style: normal;  font-weight: 700;  font-size: 15px;  color: #ffffff;  letter-spacing: 3.5px;  line-height: normal;}.daetool-header-box .daetool-header-content .daetool-header-right > a.daetool-header-right-item {  color: #FFF;  text-align: right;  font-family: "Microsoft YaHei";  font-size: 18px;  font-style: normal;  font-weight: 400;  line-height: normal;}.daetool-header-box .daetool-header-content .daetool-header-right .daetool-header-right-status-icon {  display: flex;  justify-content: center;  align-items: center;  width: 32px;  height: 32px;  border-radius: 50%;}.daetool-header-box .daetool-header-content .daetool-header-right .daetool-header-right-status-icon:hover {  background: rgba(255, 255, 255, 0.1);}.daetool-header-box .daetool-header-content .daetool-header-right .daetool-header-right-status-icon img.daetool-header-right-is-login-avatar {  display: block;  width: 100%;  height: 100%;  object-fit: cover;  border-radius: 50%;}.daetool-header-box .daetool-header-content .daetool-header-right .daetool-header-right-status-icon.checked-islogin {  margin-left: 16px;  margin-right: 25px;}.daetool-header-box .daetool-header-content .daetool-header-right .daetool-header-right-no-login {  display: flex;  justify-content: center;  align-items: center;  width: 76px;  height: 34px;  line-height: 32px;  border-radius: 8px;  background: linear-gradient(101deg, #FFA369 0%, #FF7A28 101.34%);  box-sizing: border-box;  color: #FFF;  text-align: center;  font-family: "Microsoft YaHei";  font-size: 18px;  font-style: normal;  font-weight: 400;  line-height: normal;}.daetool-header-box .daetool-header-content .daetool-header-right .daetool-header-right-no-login:hover {  background: #FF741D;}.daetool-header-box .daetool-header-content .daetool-header-right .daetool-header-right-login {  cursor: pointer;  margin-left: 20px;  position: relative;}.daetool-header-box .daetool-header-content .daetool-header-right .daetool-header-right-login > img {  width: 34px;  height: 34px;  border-radius: 50%;}.daetool-header-box .daetool-header-content .daetool-header-right .daetool-header-right-login-content {  position: absolute;  top: 41px;  left: -20px;  display: none;  flex-direction: column;  width: 112px;  box-sizing: border-box;  padding: 16px 23px;  gap: 23px;  border-radius: 12px;  border: 1px solid #EFEFEF;  background: #FFF;}.daetool-header-box .daetool-header-content .daetool-header-right .daetool-header-right-login-content > a {  color: #21252A;  font-family: "Microsoft YaHei";  font-size: 16px;  font-style: normal;  font-weight: 400;  line-height: normal;}.daetool-header-box .daetool-header-content .daetool-header-right .daetool-header-right-login-content.active {  display: flex;}.daetool-secondary-header-box {  position: fixed;  left: 0;  top: 0px;  width: 100%;  z-index: 2021;}.daetool-secondary-header-box.active {  top: 0;  display: block !important;}.daetool-secondary-header-box .daetool-secondary-header-content {  display: flex;  flex-wrap: nowrap;  flex-direction: row;  align-items: center;  justify-content: space-between;  width: 1200px;  margin: 0 auto;  height: 58px;  padding: 0 16px;  box-sizing: border-box;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-left {  display: flex;  flex-wrap: nowrap;  flex-direction: row;  align-items: center;  justify-content: flex-start;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-gname {  display: flex;  flex-wrap: nowrap;  flex-direction: row;  align-items: center;  justify-content: flex-start;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-gname img {  width: 36px;  height: 36px;  margin-right: 10px;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-gname h1 {  font-family: "Microsoft YaHei";  font-style: normal;  font-weight: 700;  font-size: 16px;  letter-spacing: 1px;  color: #ffffff;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab {  display: flex;  flex-wrap: nowrap;  flex-direction: row;  align-items: center;  justify-content: flex-start;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab::before {  content: "";  display: inline-block;  width: 1px;  height: 24px;  margin-left: 24px;  margin-right: 40px;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab a {  position: relative;  display: inline-block;  height: 52px;  line-height: 52px;  font-family: "Microsoft YaHei";  font-style: normal;  font-weight: 700;  font-size: 16px;  text-align: center;  letter-spacing: 1px;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab a.hide {  display: none;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab a::after {  position: absolute;  bottom: 5px;  left: 50%;  -webkit-transform: translateX(-50%);  -ms-transform: translateX(-50%);  -moz-transform: translateX(-50%);  -o-transform: translateX(-50%);  transform: translateX(-50%);  content: "";  display: none;  width: 24px;  height: 2px;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab a.active::after {  display: block;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab a:first-child {  margin-right: 48px;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right {  display: flex;  flex-wrap: nowrap;  flex-direction: row;  align-items: center;  justify-content: flex-start;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-tabs {  display: flex;  align-items: center;  gap: 56px;  margin-right: 36px;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-tabs a {  color: #375FDF;  text-align: center;  font-family: "Microsoft YaHei";  font-size: 15px;  font-style: normal;  font-weight: 400;  line-height: 100%;  /* 13px */}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-tabs a.active {  position: relative;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-tabs a.active::after {  position: absolute;  bottom: -12px;  left: 50%;  -webkit-transform: translateX(-50%);  -ms-transform: translateX(-50%);  -moz-transform: translateX(-50%);  -o-transform: translateX(-50%);  transform: translateX(-50%);  content: "";  border-radius: 34px;  background: linear-gradient(90deg, #7695F7 0%, #375FDF 100%);  width: 20px;  height: 2px;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download {  display: flex;  flex-wrap: nowrap;  flex-direction: row;  align-items: center;  justify-content: flex-start;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn {  position: relative;  display: flex;  flex-wrap: nowrap;  flex-direction: row;  align-items: center;  justify-content: center;  width: 120px;  height: 36px;  gap: 5px;  border-radius: 6px;  margin-left: 14px;  cursor: pointer;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn:first-child {  margin-left: 0;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn:hover .daetool-secondary-download-innner-btn {  display: block;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn:hover .daetool-secondary-header-right-qrcode-box {  display: block;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn > span {  color: #FFF;  text-align: center;  font-family: "Microsoft YaHei";  font-size: 14px;  font-style: normal;  font-weight: 400;  line-height: 100%;  /* 14px */  letter-spacing: -0.5px;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn .daetool-secondary-download-innner-btn {  position: absolute;  top: 34px;  left: 50%;  -webkit-transform: translateX(-50%);  -ms-transform: translateX(-50%);  -moz-transform: translateX(-50%);  -o-transform: translateX(-50%);  transform: translateX(-50%);  display: none;  width: max-content;  background: #ffffff;  border-radius: 8px;  padding: 4px 0;  box-sizing: border-box;  overflow: hidden;  filter: drop-shadow(0px 0px 12px rgba(0, 0, 0, 0.2));}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn .daetool-secondary-download-innner-btn a {  display: flex;  flex-wrap: nowrap;  flex-direction: row;  align-items: center;  justify-content: flex-start;  height: 36px;  padding: 5px 10px;  box-sizing: border-box;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn .daetool-secondary-download-innner-btn a:hover {  background: #eeeeee;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn .daetool-secondary-download-innner-btn a span {  font-family: "Microsoft YaHei";  font-style: normal;  font-weight: 400;  font-size: 12px;  line-height: 16px;  letter-spacing: -0.5px;  color: #000000;  margin-left: 6px;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn .daetool-secondary-header-right-qrcode-box {  position: absolute;  left: 50%;  top: 34px;  -webkit-transform: translateX(-50%);  -ms-transform: translateX(-50%);  -moz-transform: translateX(-50%);  -o-transform: translateX(-50%);  transform: translateX(-50%);  z-index: 2022;  background: #ffffff;  box-shadow: 0 0 7px 0 rgba(0, 0, 0, 0.2);  border-radius: 8px;  padding: 11px;  box-sizing: border-box;  text-align: center;  display: none;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn .daetool-secondary-header-right-qrcode-box p {  font-family: "Microsoft YaHei";  font-style: normal;  font-weight: 400;  font-size: 12px;  line-height: 16px;  letter-spacing: -0.5px;  color: #000000;  margin-top: 3px;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right > a.daetool-secondary-header-right-buy {  display: inline-block;  width: 76px;  height: 32px;  line-height: 27px;  border-radius: 6px;  text-align: center;  margin-left: 30px;  box-sizing: border-box;}.daetool-secondary-header-box .daetool-secondary-header-content .daetool-secondary-header-right > a.daetool-secondary-header-right-buy span {  font-family: "Microsoft YaHei";  font-style: normal;  font-weight: 700;  font-size: 15px;  line-height: 17px;}.daetool-secondary-header-box.black-theme {  background: #000000;}.daetool-secondary-header-box.black-theme .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-gname h1 {  color: #ffffff;}.daetool-secondary-header-box.black-theme .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab::before {  background: rgba(255, 255, 255, 0.3);}.daetool-secondary-header-box.black-theme .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab a {  color: rgba(255, 255, 255, 0.7);}.daetool-secondary-header-box.black-theme .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab a.active {  color: #ffffff;}.daetool-secondary-header-box.black-theme .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab a.active::after {  background: #ffffff;}.daetool-secondary-header-box.black-theme .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab a:hover {  color: #ffffff;}.daetool-secondary-header-box.black-theme .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download a {  background: linear-gradient(115.32deg, #0bb2c3 27.58%, #01d8ca 114.41%, #00ddcb 172.2%);}.daetool-secondary-header-box.black-theme .daetool-secondary-header-content .daetool-secondary-header-right > a.daetool-secondary-header-right-buy {  background: linear-gradient(138.19deg, rgba(11, 178, 195, 0.2) 7.65%, rgba(1, 216, 202, 0.2) 65.42%, rgba(0, 221, 203, 0.2) 103.87%);  border: 1px solid rgb(25, 212, 231);}.daetool-secondary-header-box.black-theme .daetool-secondary-header-content .daetool-secondary-header-right > a.daetool-secondary-header-right-buy span {  background: linear-gradient(137.89deg, #19d4e7 35.82%, #01d8ca 76.66%, #00ddcb 103.85%);  -webkit-background-clip: text;  -webkit-text-fill-color: transparent;  background-clip: text;  text-fill-color: transparent;}.daetool-secondary-header-box.white-theme {  background: #ffffff;  border-bottom: 1px solid rgba(0, 0, 0, 0.1);  box-sizing: border-box;}.daetool-secondary-header-box.white-theme .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-gname h1 {  color: #000000;}.daetool-secondary-header-box.white-theme .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab::before {  background: rgba(0, 0, 0, 0.1);}.daetool-secondary-header-box.white-theme .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab a {  color: #000000;}.daetool-secondary-header-box.white-theme .daetool-secondary-header-content .daetool-secondary-header-left .daetool-secondary-header-left-tab a.active::after {  background: #000000;}.daetool-secondary-header-box.white-theme .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn {  border-radius: 34px;  background: linear-gradient(90deg, #7695F7 0%, #375FDF 100%);}.daetool-secondary-header-box.white-theme .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn > img {  width: 14px;  height: 14px;}.daetool-secondary-header-box.white-theme .daetool-secondary-header-content .daetool-secondary-header-right .daetool-secondary-header-right-download .daetool-secondary-download-outer-btn:hover {  border-radius: 34px;  background: #375FDF;}.daetool-secondary-header-box.white-theme .daetool-secondary-header-content .daetool-secondary-header-right > a.daetool-secondary-header-right-buy {  background: rgba(240, 239, 255, 0.9);  border: 1px solid rgb(99, 94, 255);}.daetool-secondary-header-box.white-theme .daetool-secondary-header-content .daetool-secondary-header-right > a.daetool-secondary-header-right-buy span {  background: linear-gradient(137.89deg, #635eff 35.82%, #635eff 76.66%, #635eff 103.85%);  -webkit-background-clip: text;  -webkit-text-fill-color: transparent;  background-clip: text;  text-fill-color: transparent;}.daetool-header-center-category {  display: flex;  position: absolute;  top: 64px;  box-sizing: border-box;  width: 100%;  max-height: 0px;  background: #FFF;  z-index: 2025;  transition: all 0.4s ease-in-out;  overflow: hidden;  z-index: 2;}.daetool-header-center-category.show {  padding: 32px 0 40px 0;  max-height: 500px;}.daetool-header-center-category-content {  display: flex;  flex-wrap: wrap;  gap: 20px;  width: 1200px;  margin: 0 auto;}.daetool-header-center-category-item {  display: flex;  align-items: center;  gap: 16px;  box-sizing: border-box;  width: 386px;  height: 88px;  padding: 20px;  flex-shrink: 0;  border: 1px solid transparent;}.daetool-header-center-category-item:hover {  border-radius: 4px;  border: 1px solid #D8E1FF;  background: #EDF1FF;}.daetool-header-center-category-item img {  width: 48px;  height: 48px;  flex-shrink: 0;  aspect-ratio: 1/1;}.daetool-header-center-category-item .product-info {  display: flex;  flex-direction: column;  gap: 9px;}.daetool-header-center-category-item .product-info h3 {  color: #000;  font-family: "Microsoft YaHei";  font-size: 16px;  font-style: normal;  font-weight: 400;  line-height: normal;}.daetool-header-center-category-item .product-info p {  width: 269px;  color: #999;  font-family: "Microsoft YaHei";  font-size: 14px;  font-style: normal;  font-weight: 400;  line-height: normal;  white-space: nowrap;  overflow: hidden;  text-overflow: ellipsis;}.black-overlay {  display: none;  position: absolute;  top: 64px;  left: 0;  width: 100%;  height: 100vh;  background: rgba(0, 0, 0, 0.5);  z-index: -1;  overflow: hidden;}.black-overlay.show {  display: block;}