body {
  margin: 0;
  padding: 0;
  --main-color: #117DD6;
  --min-width: 1100px;
  min-width: var(--min-width);
}

html {
  font-size: 100px;
}
a {
  text-decoration: none;
  color: inherit;
}

li {
  list-style: none;
}
ul {
  padding: 0;
  margin: 0;
}

header {
  height: .6rem;
  width: 100%;
  box-sizing: border-box;
  padding-inline: 3vw;
  display: flex;
  align-items: center;
  background-color: #FFFFFF;
  justify-content: space-between;
  box-shadow: 0px .04rem .1rem 0px rgba(0, 0, 0, 0.06);
  position: relative;
  z-index: 3;
}
.logo {
  height: .17rem;
  width: 1.32rem;
}
header .nav {
  display: flex;
  height: 100%;
  align-items: center;
}

header .nav-menu {
  display: flex;
  gap: 1.6vw;
  margin-left: 3vw;
  height: 100%;
}

header .nav-menu-item {
  font-size: .12rem;
  font-weight: 400;
  color: #666666;
  display: flex;
  align-items: center;
}
header .nav-menu-item a {
  text-wrap: nowrap;
}
header .nav-menu-item:hover .expansion {
  display: block;
}
header .nav-menu-item .expansion:hover {
  display: block;
}
header .nav-menu-item .expansion {
  box-shadow: 
    inset 0px .04rem .1rem 0px rgba(0, 0, 0, 0.1),
    0px .04rem .1rem 0px rgba(0, 0, 0, 0.1);
  box-sizing: border-box;
  width: 100%;
  min-width: var(--min-width);
  position: absolute;
  left: 0;
  top: .6rem;
  display: none;
  z-index: 100;
  overflow: hidden;
  background-color: #ffffff;
}
header .nav-menu-item .expansion > div {
  padding-top: .24rem;
  padding-bottom: .24rem;
  display: flex;
  font-size: .14rem;
  align-items: flex-start;
}
header .nav-menu-item .expansion .veltical-line {
  width: 1px;
  background-color: #D8D8D8;
}
header .nav-menu-item .expansion .level-two {
  width: 28%;
  border-right: 1px solid #D8D8D8;
  box-sizing: border-box;
  padding-left: 15%;
  color: #444444;
  min-height: 13vw;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
header .nav-menu-item .expansion .level-two .active {
  color: var(--main-color);
  font-weight: 500;
}
header .nav-menu-item .expansion .level-three {
  width: 72%;
  padding-inline: .74rem;
  box-sizing: border-box;
  display: none;
  flex-wrap: wrap;
  align-items: flex-start;
  color: #999999;
  border-left: 1px solid #D8D8D8;
  margin-left: -1px;
}
header .nav-menu-item .expansion .level-three a {
  display: flex;
  align-items: center;
  gap: .065rem;
}
header .nav-menu-item .expansion .level-three a span {
  max-width: 85%;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}
header .nav-menu-item .expansion .level-three a svg {
  fill: #999999;
}
header .nav-menu-item .expansion .level-three-item:hover > a {
  color: var(--main-color);
}
header .nav-menu-item .expansion .level-three-item:hover > a svg {
  fill: var(--main-color);
  transform: rotateZ(-90deg);
}
header .nav-menu-item .expansion .level-four-item:hover {
  color: var(--main-color);
}
header .nav-menu-item .expansion .level-three > div {
  width: 30%;
  min-height: .44rem;
}
header .nav-menu-item .expansion .level-three > div:hover .level-four:has(a) {
  display: flex;
  margin-bottom: .24rem;
  margin-top: .1rem;
}
header .nav-menu-item .expansion .level-four {
  display: none;
  flex-direction: column;
  font-size: .1rem;
  gap: .05rem;
}

header .nav-menu-item.active {
  color: var(--main-color);
}
header .nav-menu-item:hover {
  color: var(--main-color);
}

header .nav-menu-item.active > a::after {
  content: '';
  display: block;
  width: 100%;
  position: relative;
  top: 12px;
  background-color: var(--main-color);
  height: 2px;
}

header .feature {
  display: flex;
  gap: .44rem;
  justify-content: space-between;
}
header .feature .search-container {
  display: flex;
  align-items: center;
}
header .feature .search {
  display: flex;
  gap: .08rem;
  align-items: center;
  color: #999999;
  padding: .08rem .14rem;
  position: relative;
}
header .feature .search input:focus,
header .feature .search input:hover,
header .feature .search:has(.search-input-options:active) input {
  background-color: #F6F8FA;
  width: 2.8rem;
}
header .feature .search:has(input:focus),
header .feature .search:has(input:hover) {
  background-color: #F6F8FA;
}
header .feature .search input {
  border: none;
  outline: none;
  font-size: .12rem;
  transition: width .5s ease;
  width: 1rem;
}
header .feature .search input:focus + .search-input-options {
  display: block;
}
header .feature .search .search-input-options:hover {
  display: block;
}
header .feature .search .search-input-options {
  display: none;
  position: absolute;
  font-size: .1rem;
  z-index: 110;
  background-color: #ffffff;
  top: 100%;
  width: 100%;
  left: 0;
  box-sizing: border-box;
  box-shadow: 0px .04rem .1rem 0px rgba(0, 0, 0, 0.1);
}
header .feature .search .history-container {
  display: flex;
  gap: .1rem;
  flex-wrap: wrap;
  padding-top: .04rem;
  max-height: .74rem;
  overflow: hidden;
}
header .feature .search .search-history {
  padding: .06rem .2rem .12rem .2rem;
}
header .feature .search:has(.no-history) .search-history {
  padding: .06rem .2rem 0rem .2rem;
}
header .feature .search .no-history {
  border-top: 1px solid #FAF7F4;
  padding: .08rem .2rem;
}
header .feature .search .history-container .history-card {
  background-color: #FAFAFA;
  padding: 0 .05rem;
  cursor: pointer;
  color: #666666;
  height: .18rem;
  display: flex;
  align-items: center;
}
header .feature .search .history-container .history-card:hover {
  color: var(--main-color);
}
header .search-input-options .search-item {
  color: #666666;
  font-size: .12rem;
  font-feature-settings: "kern" on;
  padding: .06rem .2rem;
  border-bottom: 1px solid #FCFBF9;
}
header .search-input-options .search-item:hover {
  background: #F0F9FF;
}
header .feature .download-container {
  height: 0.6rem;
  display: flex;
  align-items: center;
}
header .feature .download {
  display: flex;
  gap: .06rem;
  align-items: center;
  font-size: .14rem;
  font-weight: 400;
  color: var(--main-color);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
}
header .feature .download-container:hover .download {
  background: #EFF4FA;
}
header .feature .download-container.active .download {
  background: #EFF4FA;
}
.download-menu-container {
  position: relative;
  width: 100%;
}
.download-menu.active {
  height: auto;
  padding: 10px 0;
  box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.1);
  overflow: visible;
}
.download-menu:hover   {
  height: auto;
  padding: 10px 0;
  overflow: visible;
}
.download-menu {
  position: absolute;
  height: 0;
  right: 0;
  top: 0;
  background-color: #ffffff;
  overflow: hidden;
  width: 2rem;
  z-index: 2;
  box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.1);
}
.download-menu .download-menu-item {
  padding: 10px 0;
  text-align: center;
  font-size: .14rem;
  color: #666666;
  cursor: pointer;
  position: relative;
}
.download-menu .download-menu-item:hover {
  background: rgba(17, 125, 214, 0.1);
  color: #117DD6;
}
/* 二级菜单样式 */
.download-submenu {
  position: absolute;
  right: 100%;
  top: -10px;
  background-color: #ffffff;
  box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.1);
  display: none;
  width: 2rem;
  z-index: 3;
  padding: 10px 0px;
}

/* 只在非移动端显示下载菜单的hover效果 */
@media (min-width: 769px) and (hover: hover) and (pointer: fine) {
  .download-menu-item:hover .download-submenu {
    display: block;
  }
}

.download-submenu-item {
  padding: 10px 0;
  font-size: .14rem;
  color: #666666;
  cursor: pointer;
  position: relative;
  white-space: nowrap;
}

.download-submenu-item:hover {
  background: rgba(17, 125, 214, 0.1);
  color: #117DD6;
}
.download-qrcode-container {
  position: absolute;
  padding: 10px 19px;
  text-align: center;
  top: -10px;
  right: calc(100% + .15rem);
  background-color: #fff;
  flex-direction: column;
  gap: 4px;
  display: none;
  box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.1);
  z-index: 4;
}

.android-item:hover .download-qrcode-container {
  display: flex;
}
.ios-item:hover .download-qrcode-container {
  display: flex;
}
.download-qrcode-container .arrow {
  width: .2rem;
  height: .2rem;
  background-color: #fff;
  rotate: 45deg;
  position: absolute;
  right: 0;
  transform: translateX(50%);
}
.download-qrcode-container img {
  width: 1.62rem;
  height: 1.62rem;
  font-size: .12rem;
}
.download-qrcode-text {
  font-size: .12rem;
  color: #999;
}

footer {
  font-size: .14rem;
  font-weight: 400;
  color: #666666;
  font-family: Microsoft YaHei;
  background-color: #F4F7FC;
  padding: .4rem 0 .2rem 0;
  display: flex;
  align-items: center;
  flex-direction: column;
}
footer .privacy-policy:hover {
  color: var(--main-color)
}
.footer-container {
  width: 72%;
  min-width: 715px;
  position: relative;
}

.footer-info {
  padding-top: .2rem;
  padding-bottom: .2rem;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid #DDE2E9;
}
.footer-info .footer-text-info {
  display: flex;
  flex-direction: column;
  gap: .1rem;
}
.footer-info .footer-text-info div span:nth-child(1) {
  color: #444444;
}
.footer-info .qrcodes {
  display: flex;
  gap: .2rem;
  position: absolute;
  right: 0;
  top: 0;
}
.footer-info img {
  width: .86rem;
  min-width: 80px;
}
.footer-info .qrcodes div {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .04rem;
}
footer .record-info {
  margin-top: .2rem;
  text-align: center;
}
input::placeholder,
textarea::placeholder {
  color: #999999;
  font-family: Microsoft YaHei;
}