* {
  margin: 0;
  padding: 0;
}

ul li {
  list-style: none;
}

a {
  text-decoration: none;
}

body {
  --mainContentBox: 1500px;
  --headerBoxHeight: 140px;
  --headerBoxPaddingDisplay: inline-flex;
  --headerBoxRightDisplay: inline-flex;
  --navLiSpanBoxSize: 20px;
  --headerLeftBoxText: 25px;
  --topNavIsShow: none;
  --headerLeftBoxImgWidth: 112px;
  --yuanhuan-box-width: 88px;
  --header-left-box-width: 15%;
  --nav-content-box-top: 20px;
  --nav-content-second-box-top: 30px;
  --nav-content-box-width: 180px;
  --nav-content-box-padding-top: 20px;
  --nav-content-li-box-height: 40px;
  --nav-content-li-box-font-size: 16px;
  --nav-content-li-box-before-height: 3px;
}

@media screen and (max-width: 1600px) {
  body {
    --headerBoxHeight: 121px;
    --headerBoxPaddingTop: 34px;
    --headerBoxPaddingDisplay: inline-flex;
    --headerBoxRightDisplay: inline-flex;
    --navIsShow: none;
    --headerLeftBoxImgWidth: 97px;
    --headerLeftBoxText: 22px;
    --yuanhuan-box-width: 76px;
    --navLiSpanBoxSize: 17px;
    --header-left-box-width: 15%;
    --nav-content-box-top: 17px;
    --nav-content-second-box-top: 26px;
    --nav-content-box-width: 154px;
    --nav-content-box-padding-top: 17px;
    --nav-content-li-box-height: 35px;
    --nav-content-li-box-font-size: 14px;
    --nav-content-li-box-before-height: 3px;
  }
}
@media screen and (max-width: 1400px) {
  body {
    --headerBoxHeight: 93px;
    --headerBoxPaddingTop: 26px;
    --headerBoxPaddingDisplay: inline-flex;
    --headerBoxRightDisplay: inline-flex;
    --header-left-box-width: 15%;
    --navIsShow: none;
    --headerLeftBoxImgWidth: 75px;
    --headerLeftBoxText: 17px;
    --yuanhuan-box-width: 59px;
    --navLiSpanBoxSize: 13px;
    --nav-content-box-top: 13px;
    --nav-content-second-box-top: 20px;
    --nav-content-box-width: 120px;
    --nav-content-box-padding-top: 13px;
    --nav-content-li-box-height: 27px;
    --nav-content-li-box-font-size: 11px;
    --nav-content-li-box-before-height: 2px;
  }
}
@media screen and (max-width: 1200px) {
  body {
    --headerLeftBoxImgWidth: 48%;
    --navLiSpanBoxSize: 3vw;
    --nav-content-li-box-font-size: 2.3vw;
    --nav-content-li-box-before-height: 4%;
    --headerBoxRightDisplay: none;
    --topNavIsShow: block;
    --headerLeftBoxText: 3vw;
    --header-left-box-width: 32%;
  }
}
body {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: auto;
  background: radial-gradient(circle, #000022 0%, #000000 100%);
}
body .header-box {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0 auto;
  box-sizing: border-box;
  width: var(--mainContentBox);
  height: var(--headerBoxHeight);
  display: flex;
  justify-content: space-between;
  display: var(--headerBoxPaddingDisplay);
  align-items: center;
  z-index: 9999;
}
body .header-box .header-left-box {
  width: var(--header-left-box-width);
}
body .header-box .header-left-box a {
  width: 100%;
  display: flex;
  align-items: center;
  text-decoration: none;
}
body .header-box .header-left-box img {
  width: var(--headerLeftBoxImgWidth);
  height: calc(var(--headerLeftBoxImgWidth) * 112 / 112);
}
body .header-box .header-left-box div {
  margin-left: -10px;
  font-size: var(--headerLeftBoxSize);
  color: #fff;
}
body .header-box .header-left-box div p {
  font-size: var(--headerLeftBoxText);
  margin: 0;
  text-align: center;
  margin-left: 7px;
}
body .header-box .header-right-box {
  width: 80%;
  display: var(--headerBoxRightDisplay);
  align-items: center;
  justify-content: end;
}
body .header-box .header-right-box .top-nav-box {
  width: 70%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
@keyframes drawRing {
  to {
    transform: rotate(360deg);
  }
}
body .header-box .header-right-box .top-nav-box .nav-li-box {
  position: relative;
  list-style: none;
  display: flex;
}
body .header-box .header-right-box .top-nav-box .nav-li-box.fangkuai-box {
  position: relative;
  margin-left: 20px;
  --progress: 100%;
}
body .header-box .header-right-box .top-nav-box .nav-li-box.fangkuai-box .yuanhuan-box {
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translateX(-78%) translateY(-50%);
  z-index: -1;
  /* Set a large box-shadow to create the ring effect */
}
body .header-box .header-right-box .top-nav-box .nav-li-box.fangkuai-box span {
  display: block;
  height: 50px;
  line-height: 50px;
  z-index: 99;
}
body .header-box .header-right-box .top-nav-box .nav-li-box a {
  position: relative;
  caret-color: transparent;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  outline: none;
  z-index: 99999;
}
body .header-box .header-right-box .top-nav-box .nav-li-box a .nav-li-span-box {
  color: #fff;
  cursor: pointer;
  font-size: var(--content-text-introduce);
}
body .header-box .header-right-box .top-nav-box .nav-li-box a .img-box {
  width: 0;
}
body .header-box .header-right-box .top-nav-box .nav-li-box a .img-box.addcircle {
  position: absolute;
  top: 33%;
  right: 0;
  margin-top: -50%;
  margin-right: 46%;
  width: var(--yuanhuan-box-width);
  height: var(--yuanhuan-box-width);
}
body .header-box .header-right-box .top-nav-box .nav-li-box:nth-of-type(2) a .img-box.addcircle {
  top: 5%;
}
body .header-box .header-right-box .top-nav-box .nav-li-box:hover .nav-li-span-box {
  color: rgb(0, 255, 255);
}
body .header-box .header-right-box .top-nav-box .nav-li-box:hover .nav-content-box {
  height: auto;
  overflow: visible;
}
body .header-box .header-right-box .top-nav-box .nav-li-box:hover .nav-content-box .nav-content-li-box:before {
  width: 30%;
}
body .header-box .header-right-box .top-nav-box .nav-li-box:active .nav-content-box {
  height: 0;
}
body .header-box .header-right-box .top-nav-box .nav-li-box:active .nav-content-box .nav-content-li-box:before {
  width: 0;
}
body .header-box .header-right-box .top-nav-box .nav-li-box .nav-content-box {
  position: absolute;
  top: var(--nav-content-second-box-top);
  width: var(--nav-content-box-width);
  height: 0;
  overflow: hidden;
  transition: height 1s;
  padding-left: 0;
  padding-top: var(--nav-content-box-padding-top);
}
body .header-box .header-right-box .top-nav-box .nav-li-box .nav-content-box .nav-content-li-box {
  position: relative;
  height: var(--nav-content-li-box-height);
  line-height: var(--nav-content-li-box-height);
  font-size: var(--nav-content-li-box-font-size);
  list-style: none;
  color: #fff;
  cursor: pointer;
}
body .header-box .header-right-box .top-nav-box .nav-li-box .nav-content-box .nav-content-li-box a {
  color: #fff;
  caret-color: transparent;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  outline: none;
  z-index: 99999;
}
body .header-box .header-right-box .top-nav-box .nav-li-box .nav-content-box .nav-content-li-box a:hover {
  color: rgb(0, 255, 255);
}
body .header-box .header-right-box .top-nav-box .nav-li-box .nav-content-box .nav-content-li-box:before {
  content: "";
  position: absolute;
  bottom: 0;
  width: 0;
  height: var(--nav-content-li-box-before-height);
  background-color: rgb(0, 255, 255);
  transition: width 0.3s;
}
body .header-box .header-right-box .top-nav-box .nav-li-box .nav-content-box .nav-content-li-box:hover {
  color: rgb(0, 255, 255);
}
body .header-box .navbar-top {
  position: relative;
  display: var(--topNavIsShow);
}
body .header-box .navbar-top .container-fluid .navbar-toggler .menu-area {
  position: relative;
  top: 0;
}
body .header-box .navbar-top .container-fluid .navbar-toggler .menu-area .menu-area-img {
  width: 70%;
  height: 70%;
}
body .header-box .navbar-top .container-fluid .navbar-toggler .menu-area .menu-line {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30%;
  height: 26%;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0.4);
  cursor: pointer;
}
body .header-box .navbar-top .container-fluid .navbar-toggler .menu-area .menu-line span {
  background-color: #00ffff;
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 10%;
  box-sizing: border-box;
  transition: all 0.5s ease 0s;
  transform-origin: 0 50%;
}
body .header-box .navbar-top .container-fluid .navbar-toggler .menu-area .menu-line span:first-child {
  top: 0;
}
body .header-box .navbar-top .container-fluid .navbar-toggler .menu-area .menu-line span:nth-child(2) {
  top: 50%;
}
body .header-box .navbar-top .container-fluid .navbar-toggler .menu-area .menu-line span:nth-child(3) {
  top: 100%;
}
body .header-box .navbar-top .container-fluid .navbar-toggler .menu-area .menu-line .clickspan:first-child {
  transform: rotate(45deg);
  top: -3px;
  left: 11%;
  width: 100%;
  height: 10%;
}
body .header-box .navbar-top .container-fluid .navbar-toggler .menu-area .menu-line .clickspan:nth-child(2) {
  opacity: 0;
  width: 0;
}
body .header-box .navbar-top .container-fluid .navbar-toggler .menu-area .menu-line .clickspan:nth-child(3) {
  transform: rotate(-45deg);
  top: 100%;
  left: 10%;
  width: 100%;
  height: 10%;
}
body .header-box .navbar-top .collapse-area {
  position: absolute;
  right: 0;
  top: 100%;
  margin-top: 15%;
  width: 90vw;
  text-align: center;
  background: rgba(0, 0, 0, 0.4);
}
body .header-box .navbar-top .collapse-area .top-nav-box {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  color: aliceblue;
}
body .header-box .navbar-top .collapse-area .top-nav-box .nav-li-box {
  position: relative;
  font-size: 4vw;
  padding-top: 2%;
}
body .header-box .navbar-top .collapse-area .top-nav-box .nav-li-box a {
  caret-color: transparent;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  outline: none;
}
body .header-box .navbar-top .collapse-area .top-nav-box .nav-li-box a .nav-li-span-box {
  color: #fff;
  cursor: pointer;
}
body .header-box .navbar-top .collapse-area .top-nav-box .nav-li-box a .nav-li-span-box:hover {
  color: rgb(0, 255, 255);
}
body .header-box .navbar-top .collapse-area .top-nav-box .nav-li-box a .img-box {
  display: none;
}
body .header-box .navbar-top .collapse-area .top-nav-box .nav-li-box .nav-content-box {
  width: 100%;
  max-height: 0;
  overflow: hidden;
  transition: max-height 2s;
  margin-left: 21%;
}
body .header-box .navbar-top .collapse-area .top-nav-box .nav-li-box .nav-content-box .nav-content-li-box {
  position: relative;
  list-style: none;
  color: #fff;
  cursor: pointer;
  padding-top: 8%;
  text-align: left;
}
body .header-box .navbar-top .collapse-area .top-nav-box .nav-li-box .nav-content-box .nav-content-li-box a {
  color: #fff;
  caret-color: transparent;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  outline: none;
  z-index: 99999;
}
body .header-box .navbar-top .collapse-area .top-nav-box .nav-li-box .nav-content-box .nav-content-li-box a:hover {
  color: rgb(0, 255, 255);
}
body .header-box .navbar-top .collapse-area .top-nav-box .nav-li-box .nav-content-box .nav-content-li-box::before {
  content: "";
  position: absolute;
  bottom: 0;
  width: 0;
  height: var(--nav-content-li-box-before-height);
  background-color: rgb(0, 255, 255);
  transition: width 0.3s;
}
body .header-box .navbar-top .collapse-area .top-nav-box .nav-li-box .nav-content-box .nav-content-li-box:hover {
  color: rgb(0, 255, 255);
}
body .header-box .navbar-top .collapse-area .top-nav-box .nav-li-box:hover .nav-content-box {
  max-height: 600px;
}
body .header-box .navbar-top .collapse-area .top-nav-box .nav-li-box:hover .nav-content-box .nav-content-li-box::before {
  width: 30%;
}