html {
     /* 平滑滚动 */
     /* scroll-behavior: smooth;  */
     /* 强制 Y 轴滚动吸附 */
     /* scroll-snap-type: y mandatory;  */
     background: #000;
 }

 body {
     margin: 0;
     padding: 0;
 }

 a {
     text-decoration: none;
 }

 .header {
     display: flex;
     justify-content: space-between;
     align-items: center;
     border-bottom: 1px solid rgba(255, 255, 255, 0.1);
     height: 84px;
     width: 100%;
     background: rgba(14, 12, 21, 1);
     box-sizing: content-box !important;
 }

 .header *,
 .header *::before,
 .header *::after {
     /* 重置边框相关属性 */
     border-width: initial !important;
     border-style: initial !important;
     border-color: initial !important;

     /* 重置盒模型 */
     box-sizing: initial !important;
 }

 .logo {
     padding-left: 40px;
     width: 141.5px;
     height: 25px;
     /* 重置边框相关属性 */
     border-width: 0 !important;
     border-style: none !important;
 }

 .version {
     color: #ffffff;
     font-size: 20px;
     margin-right: auto;
     margin-left: 20px;
     /* 重置边框相关属性 */
     border-width: 0 !important;
     border-style: none !important;
 }

 .menu-content {
     display: flex;
 }

 .menu-item {
     padding: 0 48px;
     font-family: Microsoft YaHei;
     font-weight: 400;
     font-size: 14px;
     height: 84px;
     line-height: 84px;
     color: rgba(255, 255, 255, 0.5);
     /* 重置边框相关属性 */
     border-width: 0 !important;
     border-style: none !important;
 }

 .menu-item-active {
     color: #ffffff;
     background: transparent;
 }

 .normal-link {
     align-content: center;
     /* 重置边框相关属性 */
     border-width: 0 !important;
     border-style: none !important;
 }

 .login {
     padding-right: 40px;
     width: 98px;
     height: 44px;
     /* 重置边框相关属性 */
     border-width: 0 !important;
     border-style: none !important;
 }

 .logout {
     padding-right: 40px;
     width: 98px;
     height: 44px;
     /* 重置边框相关属性 */
     border-width: 0 !important;
     border-style: none !important;
 }

 .section {
     display: flex;
     flex-direction: column;
     justify-content: center;
     align-items: center;
     /* 滚动吸附点 */
     scroll-snap-align: start;
     /* 滚动吸附点 */
     min-height: 100vh;
 }

 .project-intro {
     background-image: url("../images/project-intro.png");
     background-repeat: no-repeat;
     background-size: cover;
     width: 100%;
     height: 996px;
 }

 .title {
     position: relative;
     font-family: Sora;
     font-weight: 600;
     font-size: 72px;
     color: #fff;
     margin-bottom: 40px;
 }

 .title-alert {
     color: #ffffff;
     font-size: 20px;
     text-align: center;
     width: 857px;
     gap: 10px;
     opacity: 1;
     border-radius: 12px;
     border-width: 1px;
     border-style: solid;
     padding: 4px 8px;
     background: #9B60FF33;
     position: relative;
     top: auto;
 }

 .vector {
     position: absolute;
     top: 94px;
     left: 380px;
     width: 311px;
     height: 8px;
 }

 .desc {
     width: 1200px;
     font-family: Microsoft YaHei;
     font-weight: 400;
     font-size: 20px;
     color: rgba(202, 198, 221, 1);
     text-align: center;
 }

 .desc-1 {
     margin-top: 75px;
 }

 .desc-2 {
     margin-top: 24px;
 }

 .download-btn {
     margin-top: 128px;
     padding: 20px 44px;
     border-radius: 44px;
     color: #000;
     background: #fff;
     font-weight: 500;
     font-size: 22px;
 }

 .section-title {
     font-family: FZLanTingHei-EB-GBK;
     font-weight: 400;
     font-size: 52px;
     text-align: center;
     color: #fff;
 }

 .section-desc {
     margin-top: 14px;
     width: 856px;
     font-family: Microsoft YaHei;
     font-weight: 400;
     font-size: 16px;
     text-align: center;
     color: rgba(182, 177, 200, 1);
 }

 .section-content {
     position: relative;
     margin-top: 70px;
     background-image: url("../images/section-card.png");
     background-repeat: no-repeat;
     background-size: 100% 100%;
     width: 1600px;
     height: 790px;
 }

 .section-content img {
     position: absolute;
     top: 110px;
     left: 246px;
     width: 1108px;
     height: 544px;
 }

 .symbol-recovery {
     background-image: url("../images/symbol-recovery.png");
     background-repeat: no-repeat;
     background-size: cover;
     width: 100%;
     height: 1080px;
 }

 .semantic-analysis {
     background-image: url("../images/semantic-analysis.png");
     background-repeat: no-repeat;
     background-size: cover;
     width: 100%;
     height: 1271px;
 }

 .results-review {
     background-image: url("../images/results-review.png");
     background-repeat: no-repeat;
     background-size: cover;
     width: 100%;
     height: 1349px;
 }

 .more-features {
     display: flex;
     flex-direction: column;
     justify-content: center;
     align-items: center;
     width: 100%;
     margin-top: 178px;
     margin-bottom: 120px;
 }

 .more-features-title {
     font-family: FZLanTingHei-EB-GBK;
     font-weight: 400;
     font-size: 52px;
     text-align: center;
     color: #fff;
 }

 .more-features-desc {
     margin-top: 14px;
     width: 856px;
     font-family: Microsoft YaHei;
     font-weight: 400;
     font-size: 16px;
     text-align: center;
     color: rgba(182, 177, 200, 1);
 }

 .feature-list {
     display: flex;
     flex-direction: row;
     justify-content: center;
     align-items: center;
     position: relative;
     column-gap: 28px;
     margin-top: 90px;
     width: 1420px;
     height: 506px;
 }

 .feature-1 {
     background-image: url("../images/feature-1.png");
     background-repeat: no-repeat;
     background-size: cover;
     width: 100%;
     height: 100%;
 }

 .feature-1-hover {
     visibility: visible;
     visibility: hidden;
     position: absolute;
     top: -1px;
     left: -1px;
     background-image: url("../images/hover-border.png");
     background-repeat: no-repeat;
     background-size: cover;
     width: 336px;
     height: 509px;
 }

 .feature-1:hover .feature-1-hover {
     visibility: visible;
 }

 .feature-2 {
     background-image: url("../images/feature-2.png");
     background-repeat: no-repeat;
     background-size: cover;
     width: 100%;
     height: 100%;
 }

 .feature-2-hover {
     visibility: hidden;
     position: absolute;
     top: -1px;
     left: 361px;
     background-image: url("../images/hover-border.png");
     background-repeat: no-repeat;
     background-size: cover;
     width: 336px;
     height: 509px;
 }

 .feature-2:hover .feature-2-hover {
     visibility: visible;
 }

 .feature-3 {
     background-image: url("../images/feature-3.png");
     background-repeat: no-repeat;
     background-size: cover;
     width: 100%;
     height: 100%;
 }

 .feature-3-hover {
     visibility: hidden;
     position: absolute;
     top: 0px;
     left: 723px;
     background-image: url("../images/hover-border.png");
     background-repeat: no-repeat;
     background-size: cover;
     width: 336px;
     height: 509px;
 }

 .feature-3:hover .feature-3-hover {
     visibility: visible;
 }

 .feature-4 {
     background-image: url("../images/feature-4.png");
     background-repeat: no-repeat;
     background-size: cover;
     width: 100%;
     height: 100%;
 }

 .feature-4-hover {
     visibility: hidden;
     position: absolute;
     top: 0;
     left: 1085px;
     background-image: url("../images/hover-border.png");
     background-repeat: no-repeat;
     background-size: cover;
     width: 336px;
     height: 509px;
 }

 .feature-4:hover .feature-4-hover {
     visibility: visible;
 }

 .feature-item-title {
     margin-top: 160px;
     padding: 0 34px 0 42px;
     width: 258px;
     font-family: FZLanTingHei-EB-GBK;
     font-weight: 400;
     font-size: 48px;
     color: #fff;
 }

 .feature-item-desc {
     margin-top: 28px;
     padding: 0 34px 0 42px;
     width: 258px;
     font-family: Microsoft YaHei;
     font-weight: 400;
     font-size: 26px;
     color: rgba(128, 131, 142, 1);
 }

 .vision {
     display: flex;
     flex-direction: column;
     justify-content: center;
     align-items: center;
     position: relative;
     margin: 0 auto;
     background-image: url("../images/vision.png");
     background-repeat: no-repeat;
     background-size: 1200px 938px;
     width: 1200px;
     height: 938px;
 }

 .vision-content {
     position: absolute;
     top: 416px;
     left: 368px;
 }

 .vision-title {
     font-family: FZLanTingHei-EB-GBK;
     font-weight: 400;
     font-size: 52px;
     line-height: 65px;
     color: #fff;
     width: 464px;
     text-align: center;
 }

 .vision-desc {
     margin-top: 36px;
     font-family: Microsoft YaHei;
     font-weight: 400;
     font-size: 20px;
     text-align: center;
     color: rgba(182, 177, 200, 1);
     width: 464px;
 }

 .disclaimer {
     display: flex;
     flex-direction: column;
     justify-content: center;
     align-items: center;
     width: 100%;
     margin-top: 175px;
 }

 .disclaimer-title {
     font-family: Sora;
     font-weight: 600;
     font-size: 60px;
     text-align: center;
     color: #fff;
 }

 .disclaimer-desc {
     font-family: Microsoft YaHei;
     font-weight: 400;
     font-size: 16px;
     text-align: center;
     color: rgba(182, 177, 200, 1);
 }

 .disclaimer-content {
     margin-top: 64px;
     font-family: Microsoft YaHei;
     font-weight: 400;
     font-size: 20px;
     text-align: center;
     width: 1069px;
     color: rgba(117, 113, 133, 1);
 }

 .help-doc {
     margin-top: 68px;
     padding: 20px 44px;
     border-radius: 44px;
     color: #000;
     background: #fff;
     font-weight: 500;
     font-size: 22px;
 }

 .footer {
     display: flex;
     justify-content: center;
     align-items: center;
     flex-direction: column;
     margin-top: 250px;
     margin-bottom: 24px;
 }

 .footer-content {
     display: flex;
     justify-content: space-between;
     flex-direction: row;
     align-items: flex-start;
     margin-bottom: 80px;
     width: 1560px;
 }

 .footer-item {
     display: flex;
     flex-direction: row;
 }

 .footer-title {
     margin-right: 97px;
     font-family: Microsoft YaHei;
     font-weight: 400;
     font-size: 30px;
     color: #fff;
 }

 .friend-link {
     margin-right: 24px;
 }

 .friend-link:nth-last-child(1) {
     margin-right: 0;
 }

 .link-item {
     display: block;
     margin-bottom: 14px;
     max-width: 266px;
     font-weight: 400;
     font-size: 16px;
     text-decoration: underline;
     text-decoration-style: solid;
     text-decoration-thickness: 0%;
     color: #fff;
 }

 .link-item:nth-last-child(1) {
     margin-bottom: 0;
 }

 .follow-list {
     display: flex;
     flex-direction: row;
     align-items: center;
     column-gap: 20px;
 }

 .follow-item img {
     margin-bottom: 20px;
     width: 74px;
     height: 74px;
 }

 .follow-item>div {
     font-weight: 400;
     font-size: 16px;
     color: #fff;
 }

 .footer-copyright {
     display: flex;
     flex-direction: row;
     justify-content: space-between;
     align-items: center;
     width: 1560px;
     height: 70px;
     border-top: 1px solid rgba(255, 255, 255, 1);
 }

 .copyright-item {
     font-weight: 400;
     font-size: 14px;
     color: #fff;
 }