* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
}

a {
  color: #1a64e1;
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 1px;
}

a:hover {
  text-decoration: underline;
}

.main {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.main-header {
  height: 85px;
  background: #f2f2f2;
  padding: 0 17%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.main-header-menu {
  display: flex;
  margin-top: 1rem;
}

.main-header-menu-item {
  font-size: 18px;
  margin-left: 3rem;
}

.main-body {
  overflow: auto;
  flex: 1;
}

.main .banner {
  height: 438px;
  padding: 0 17%;
  display: flex;
  justify-content: center;
  flex-direction: column;
}

.main .banner-title {
  font-size: 36px;
  font-weight: 600;
  letter-spacing: 5px;
  margin-bottom: 2rem;
}

.main .banner-subtitle {
  font-size: 17px;
  margin-bottom: 1rem;
}

.main .banner-content {
  font-size: 17px;
}

.main .standard {
  background: #fafafa;
  padding: 5rem 17% 3rem;
  display: flex;
}

.main .standard-left {
  flex: 1;
  padding-right: 4rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.main .standard-left-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 3px;
  display: flex;
}

.main .standard-left-title-line {
  padding-bottom: 4px;
  border-bottom: 2px solid red;
}

.main .standard-left-group {
  text-indent: 2em;
  line-height: 30px;
  letter-spacing: 2px;
}

.main .standard-left-link {
  display: flex;
  flex-direction: column;
  line-height: 36px;
}

.main .standard-right {
  width: 20%;
  flex-shrink: 0;
  margin-top: 2rem;
}

.main .standard-right-text {
  text-align: center;
  font-size: 13px;
}

.main .standard-right-text-item {
  margin-top: 10px;
  letter-spacing: 1px;
}

.main .tool {
  background: #f2f2f2;
  padding: 4rem 17% 3rem;
}

.main .tool-title {
  display: flex;
  justify-content: space-between;
}

.main .tool-title-link {
  width: 240px;
  height: 40px;
  line-height: 40px;
  background: #e60112;
  text-align: center;
  color: #fff;
  cursor: pointer;
}

.main .tool-img {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.main .solve-header {
  height: 90px;
  background: #f2f2f2;
  padding: 0 16rem;
}

.main .solve-header-title {
  width: 100%;
  height: 100%;
  font-size: 34px;
  font-weight: 600;
  display: flex;
  justify-content: center;
  align-items: center;
  letter-spacing: 5px;
  background: rgba(255, 255, 255, 0.5);
}

.main .solve .solve-content-group {
  padding-top: 3rem;
  display: none;
}

.main .solve .solve-content-group.active-content {
  display: block;
}

.main .solve .solve-content-group-title {
  display: flex;
  align-items: center;
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 1rem;
}

.main .solve .solve-content-group-title-img {
  margin-right: 4px;
  width: 34px;
}

.main .solve .solve-content-group-character-title {
  display: flex;
  justify-content: center;
  margin-bottom: 1rem;
}

.main .solve .solve-content-group-character-box .character-group {
  display: flex;
  margin-bottom: 1rem;
  padding: 0 10%;
}

.main .solve .solve-content-group-character-box .character-group-item {
  flex: 1;
  background: #f2f2f2;
  padding: 1rem .5rem;
  display: flex;
  justify-content: center;
  flex-direction: column;
}

.main .solve .solve-content-group-character-box .character-group-item:last-child {
  margin-left: 1rem;
}

.main .solve .solve-content-group-character-box .character-group-item-img {
  display: flex;
  justify-content: center;
}

.main .solve .solve-content-group-character-box .character-group-item-subtitle {
  font-weight: 600;
  text-align: center;
  margin-top: .5rem;
}

.main .solve .solve-content-group-character-box .character-group-item-content {
  font-size: 14px;
  text-align: center;
  margin-top: 4px;
}

.main .solve-content {
  background: #fafafa;
  padding: 0 16rem 4rem;
}

.main .solve-content-wrapper {
  background: #fcfcfc;
  height: 100%;
  padding: 0 5%;
}

.main .solve-content-wrapper .icon-group {
  display: flex;
  border-bottom: 1px solid #eee;
  justify-content: space-between;
  padding-top: 1.5rem;
}

.main .solve-content-wrapper .icon-group-item {
  color: #999;
  display: flex;
  letter-spacing: 1px;
  font-weight: 600;
  align-items: center;
  cursor: pointer;
}

.main .solve-content-wrapper .icon-group-item.active {
  color: #e60012;
}

.main .solve-content-wrapper .icon-group-item-img {
  margin-right: 4px;
  width: 34px;
}

.main .solve-content-wrapper .icon-group-text {
  width: 240px;
  height: 40px;
  line-height: 40px;
  background: #999;
  text-align: center;
  color: #fff;
  cursor: pointer;
}

.main .solve-content-wrapper .icon-group-text.active {
  background: #e60012;
}

.main .software {
  margin-top: 3rem;
}

.main .software-header {
  display: flex;
}

.main .software-title {
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 1rem;
}

.main .software-subtitle {
  color: #4e4e4e;
  font-size: 15px;
  margin: 1.5rem .5rem;
}

.main .software-content {
  display: flex;
  justify-content: space-between;
  background: #f2f2f2;
  padding: 1rem 2rem;
}

.main .software-content-left {
  display: flex;
  flex: 1;
  align-items: center;
}

.main .software-content-left-text {
  margin-left: 1rem;
  letter-spacing: 1px;
}

.main .system {
  background: #fafafa;
}

.main .system-header {
  background: #1970d1;
  color: #fff;
  font-size: 30px;
  padding: 1rem 0;
  text-align: center;
  letter-spacing: 4px;
}

.main .system-content {
  padding: 0 17%;
}

.main .system-content .head {
  display: flex;
  margin: 2rem 0;
}

.main .system-content .head-text {
  text-indent: 2em;
  line-height: 30px;
  letter-spacing: 2px;
  font-weight: 500;
}

.main .system-content .head-link {
  margin-left: 4rem;
}

.main .system-content .middle {
  margin-bottom: 2rem;
}

.main .system-content .bidding {
  padding-bottom: 2rem;
}

.main .system-content .bidding-title {
  font-size: 20px;
  font-weight: 600;
  padding: 1.5rem 0;
}

.main .video {
  background: #f2f2f2;
  padding: 4rem 18% 3rem;
}

.main .video-header {
  display: flex;
  justify-content: center;
}

.main .video-header-text {
  display: flex;
  align-items: center;
  margin: 0 4px;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 2px;
}

.main .video-header-text::before, .main .video-header-text::after {
  content: '';
  height: 2px;
  display: block;
  width: 50px;
  background: #e7000d;
  margin-right: 1rem;
}

.main .video-header-text::after {
  margin-right: 0;
  margin-left: 1rem;
}

.main .video-middle {
  display: flex;
  margin: 2rem 0 1rem;
}

.main .video-middle-item {
  flex: 1;
  height: 40px;
  line-height: 40px;
  font-size: 18px;
  letter-spacing: 2px;
  text-align: center;
  cursor: pointer;
  background: #e8e8e8;
  color: #000;
}

.main .video-middle-item.active {
  background: #e60112;
  color: #fff;
}

.main .video-content {
  display: none;
}

.main .video-content.active {
  display: block;
}

.main .market {
  padding: 0 17.5%;
}

.main .market-title {
  letter-spacing: 2px;
}

.main .market-title-item {
  color: #1a64e1;
  cursor: pointer;
}

.main .limit {
  background: #fafafa;
  padding: 4rem 17% 3rem;
}

.main .footer {
  color: #fff;
}

.main .footer-content {
  background: #2e3337;
  padding: 3.5rem 17% 2rem;
  border-bottom: 1px solid #848484;
}

.main .footer-content-title {
  font-size: 32px;
  padding-bottom: 1rem;
}

.main .footer-content-title::after {
  content: '';
  height: 3px;
  display: block;
  width: 62px;
  background: #fff;
  margin-right: 1rem;
  margin-top: 10px;
}

.main .footer-content-middle {
  display: flex;
}

.main .footer-content-middle .middle-left {
  width: 40%;
  flex-shrink: 0;
  margin-top: 1rem;
  letter-spacing: 2px;
  line-height: 32px;
}

.main .footer-content-middle .middle-right {
  display: flex;
  justify-content: space-between;
  flex: 1;
}

.main .footer-content-middle .middle-right-item {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.main .footer-content-middle .middle-right-item-text {
  letter-spacing: 2px;
  margin-top: 6px;
}

.main .footer-tip {
  background: #4c4c4c;
  padding: 10px 0;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}