.section-1 {
    position: relative;
    background: url(../images/index-bg.webp) no-repeat center;
    background-size: cover;
    height: 50.083vw;
}

.section-1 .content {
    width: auto;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    text-align: center;
    letter-spacing: 2.5px;
}

.section-1 .title {
    font-family: 'HarmonyOS Sans Condensed', Arial, sans-serif;
    font-weight: bold;
    font-size: 80px;
    color: #000000;
    line-height: 1.5;
}

.section-1 .sub-title {
    font-size: 24px;
    font-weight: bold;
    color: #B3B3B3;
    margin-top: 1vw;
    line-height: 2;
}

.float-item {
    position: absolute;
    background-size: contain;
}

.section-1 .item1 {
    width: 383.06px;
    height: 383.06px;
    top: 8vw;
    left: 5.5vw;
}

.section-1 .item2 {
    width: 351.57px;
    height: 351.57px;
    top: 28vw;
    left: 14.5vw;
}

.section-1 .item3 {
    width: 351.57px;
    height: 351.57px;
    top: 29.5vw;
    right: 22vw;
}

.section-1 .item4 {
    width: 383.06px;
    height: 383.06px;
    top: 12.5vw;
    right: 5vw;
}

.feature-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 80px;
}

.section-feature img {
    width: 72px;
    height: 72px;
}

.feature-item {
    display: flex;
    align-items: center;
    color: #7f7f7f;
    cursor: pointer;
}

.feature-item span {
    font-size: 28px;
    /* color: #7f7f7f; */
    font-weight: bold;
}

.feature-item.active,
.feature-item span:hover {
    color: #000000;
}

.section-app {
    padding: 5vw 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-preview-wrapper {
    width: 100vw;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10vw;
}

.section-app img {
    width: 386px;
    height: 677px;
}

.app-preview-content {
    display: flex;
    flex-direction: column;
    font-weight: bold;
    text-align: center;
}

.app-preview-content .sub-title1 {
    font-family: 'TaoBaoMaiCaiTi', Arial, sans-serif;
    font-weight: normal;
    color: #399BFC;
    font-size: 36px;
    line-height: 2;
}

.app-preview-content .title {
    font-family: 'TaoBaoMaiCaiTi', Arial, sans-serif;
    font-weight: normal;
    color: #000000;
    font-size: 64px;
    line-height: 1.5;
}

.app-preview-content .sub-title2 {
    font-family: 'HarmonyOS Sans', Arial, sans-serif;
    font-weight: normal;
    color: #B3B3B3;
    font-size: 24px;
    margin-top: 20px;
    letter-spacing: 2.5px;
}

.section-core-info {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 5vw 0;
    flex-direction: column;
}

.section-core-info h3 {
    font-family: 'TaoBaoMaiCaiTi', Arial, sans-serif;
    font-weight: normal;
    font-size: 64px;
    color: #000000;
    line-height: 2;
}

.core-wrapper {
    width: 50vw;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 50px;
}

.core-item {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    text-align: center;
    gap: 20px;
}

.core-item span {
    font-size: 28px;
    color: #000000;
    font-weight: bold;
}

.core-item p {
    font-size: 24px;
    color: #B3B3B3;
    font-weight: normal;
    letter-spacing: 2.5px;
    height: 64px;
}

.core-wrapper .item1 img {
    width: 190px;
    height: 190px;
}

.core-wrapper .item2 img {
    width: 190px;
    height: 190px;
}

.core-wrapper .item3 img {
    width: 190px;
    height: 190px;
}

@keyframes float {
    0% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-30px);
    }

    100% {
        transform: translateY(0);
    }
}

@media (max-width: 1024px) {
    .section-1 .content {
        letter-spacing: 0.13vw;
    }

    .section-1 .title {
        font-size: 4.16667vw;
    }

    .section-1 .sub-title {
        font-size: 1.25vw;
    }

    .section-1 .item1 {
        width: 19.951vw;
        height: 19.951vw;
        top: 12vw;
        left: 12.5vw;
    }

    .section-1 .item2 {
        width: 18.311vw;
        height: 18.311vw;
        top: 30vw;
        left: 20.5vw;
    }

    .section-1 .item3 {
        width: 18.311vw;
        height: 18.311vw;
        top: 28vw;
        right: 27vw;
    }

    .section-1 .item4 {
        width: 19.951vw;
        height: 19.951vw;
        top: 14vw;
        right: 13vw;
    }

    .section-feature img {
        width: 3.75vw;
        height: 3.75vw;
    }

    .feature-item span {
        font-size: 1.458vw;
    }

    .section-app img {
        width: 20.104vw;
        height: 35.26vw;
    }

    .app-preview-content .sub-title1 {
        font-size: 1.875vw;
    }

    .app-preview-content .title {
        font-size: 3.333vw;
    }

    .app-preview-content .sub-title2 {
        font-size: 1.25vw;
        letter-spacing: 0.13vw;
    }

    .section-core-info h3 {
        font-size: 3.333vw;
    }

    .core-item span {
        font-size: 1.458vw;
    }

    .core-item p {
        font-size: 1.25vw;
        letter-spacing: 0.13vw;
    }

    .core-wrapper .item1 img {
        width: 9.896vw;
        height: 9.896vw;
    }

    .core-wrapper .item2 img {
        width: 9.896vw;
        height: 9.896vw;
    }

    .core-wrapper .item3 img {
        width: 9.896vw;
        height: 9.896vw;
    }
}

/* @media (min-width: 1025px) and (max-width: 1280px) {
    .section-1 .content {
        letter-spacing: 1.331px;
    }

    .section-1 .title {
        font-size: 42.667px;
    }

    .section-1 .sub-title {
        font-size: 12.8px;
    }

    .section-1 .item1 {
        width: 204.298px;
        height: 204.298px;
        top: 12vw;
        left: 12.5vw;
    }

    .section-1 .item2 {
        width: 187.505px;
        height: 187.505px;
        top: 30vw;
        left: 20.5vw;
    }

    .section-1 .item3 {
        width: 187.505px;
        height: 187.505px;
        top: 28vw;
        right: 27vw;
    }

    .section-1 .item4 {
        width: 204.298px;
        height: 204.298px;
        top: 14vw;
        right: 13vw;
    }

    .section-feature img {
        width: 38.4px;
        height: 38.4px;
    }

    .feature-item span {
        font-size: 14.93px;
    }

    .section-app img {
        width: 205.865px;
        height: 361.062px;
    }

    .app-preview-content .sub-title1 {
        font-size: 19.2px;
    }

    .app-preview-content .title {
        font-size: 34.13px;
    }

    .app-preview-content .sub-title2 {
        font-size: 12.8px;
        letter-spacing: 1.331px;
    }

    .section-core-info h3 {
        font-size: 34.13px;
    }

    .core-item span {
        font-size: 14.93px;
    }

    .core-item p {
        font-size: 12.8px;
        letter-spacing: 1.331px;
    }

    .core-wrapper .item1 img {
        width: 101.335px;
        height: 101.335px;
    }

    .core-wrapper .item2 img {
        width: 101.335px;
        height: 101.335px;
    }

    .core-wrapper .item3 img {
        width: 101.335px;
        height: 101.335px;
    }
} */

@media (min-width: 1025px) and (max-width: 1280px){
    .section-1 .item1 {
        top: 4vw;
        left: 0vw;
    }

    .section-1 .item2 {
        top: 30vw;
        left: 7.5vw;
    }

    .section-1 .item3 {
        top: 30.5vw;
        right: 15vw;
    }

    .section-1 .item4 {
        top: 14vw;
        right: 0vw;
    }
}

@media (min-width: 1281px) and (max-width: 1397px){
    .section-1 .item1 {
        top: 8vw;
        left: 5.5vw;
    }

    .section-1 .item2 {
        top: 28vw;
        left: 14.5vw;
    }

    .section-1 .item3 {
        top: 30.5vw;
        right: 19vw;
    }

    .section-1 .item4 {
        top: 12.5vw;
        right: 5vw;
    }
}

/* @media (min-width: 1281px) and (max-width: 1397px) {
    .section-1 .content {
        letter-spacing: 1.66px;
    }

    .section-1 .title {
        font-size: 53.33px;
    }

    .section-1 .sub-title {
        font-size: 16px;
    }

    .section-1 .item1 {
        width: 255.37px;
        height: 255.37px;
        top: 12vw;
        left: 12.5vw;
    }

    .section-1 .item2 {
        width: 234.38px;
        height: 234.38px;
        top: 30vw;
        left: 20.5vw;
    }

    .section-1 .item3 {
        width: 234.38px;
        height: 234.38px;
        top: 28vw;
        right: 27vw;
    }

    .section-1 .item4 {
        width: 255.37px;
        height: 255.37px;
        top: 14vw;
        right: 13vw;
    }

    .section-feature img {
        width: 48px;
        height: 48px;
    }

    .feature-item span {
        font-size: 18.26px;
    }

    .section-app img {
        width: 257.33px;
        height: 451.33px;
    }

    .app-preview-content .sub-title1 {
        font-size: 24px;
    }

    .app-preview-content .title {
        font-size: 42.66px;
    }

    .app-preview-content .sub-title2 {
        font-size: 16px;
        letter-spacing: 1.66px;
    }

    .section-core-info h3 {
        font-size: 42.66px;
    }

    .core-item span {
        font-size: 18.26px;
    }

    .core-item p {
        font-size: 16px;
        letter-spacing: 1.66px;
    }

    .core-wrapper .item1 img {
        width: 126.67px;
        height: 126.67px;
    }

    .core-wrapper .item2 img {
        width: 126.67px;
        height: 126.67px;
    }

    .core-wrapper .item3 img {
        width: 126.67px;
        height: 126.67px;
    }
} */

/* @media (min-width: 1397px) and (max-width: 1536px) {
    .section-1 .content {
        letter-spacing: 1.81px;
    }

    .section-1 .title {
        font-size: 58.14px;
    }

    .section-1 .sub-title {
        font-size: 17.45px;
    }

    .section-1 .item1 {
        width: 278.42px;
        height: 278.42px;
        top: 12vw;
        left: 12.5vw;
    }

    .section-1 .item2 {
        width: 255.66px;
        height: 255.66px;
        top: 30vw;
        left: 20.5vw;
    }

    .section-1 .item3 {
        width: 255.66px;
        height: 255.66px;
        top: 28vw;
        right: 27vw;
    }

    .section-1 .item4 {
        width: 278.42px;
        height: 278.42px;
        top: 14vw;
        right: 13vw;
    }

    .section-feature img {
        width: 52.35px;
        height: 52.35px;
    }

    .feature-item span {
        font-size: 20.37px;
    }

    .section-app img {
        width: 280.25px;
        height: 492.85px;
    }

    .app-preview-content .sub-title1 {
        font-size: 26.18px;
    }

    .app-preview-content .title {
        font-size: 46.52px;
    }

    .app-preview-content .sub-title2 {
        font-size: 17.45px;
        letter-spacing: 1.81px;
    }

    .section-core-info h3 {
        font-size: 46.52px;
    }

    .core-item span {
        font-size: 20.37px;
    }

    .core-item p {
        font-size: 17.45px;
        letter-spacing: 1.81px;
    }

    .core-wrapper .item1 img {
        width: 138.13px;
        height: 138.13px;
    }

    .core-wrapper .item2 img {
        width: 138.13px;
        height: 138.13px;
    }

    .core-wrapper .item3 img {
        width: 138.13px;
        height: 138.13px;
    }
} */

/* @media (min-width: 1537px) and (max-width: 1706.67px) {
    .section-1 .content {
        letter-spacing: 1.99px;
    }

    .section-1 .title {
        font-size: 64px;
    }

    .section-1 .sub-title {
        font-size: 19.2px;
    }

    .section-1 .item1 {
        width: 306.22px;
        height: 306.22px;
        top: 12vw;
        left: 12.5vw;
    }

    .section-1 .item2 {
        width: 281.22px;
        height: 281.22px;
        top: 30vw;
        left: 20.5vw;
    }

    .section-1 .item3 {
        width: 281.22px;
        height: 281.22px;
        top: 28vw;
        right: 27vw;
    }

    .section-1 .item4 {
        width: 306.22px;
        height: 306.22px;
        top: 14vw;
        right: 13vw;
    }

    .section-feature img {
        width: 57.6px;
        height: 57.6px;
    }

    .feature-item span {
        font-size: 22.4px;
    }

    .section-app img {
        width: 308.16px;
        height: 542.59px;
    }

    .app-preview-content .sub-title1 {
        font-size: 28.8px;
    }

    .app-preview-content .title {
        font-size: 51.2px;
    }

    .app-preview-content .sub-title2 {
        font-size: 19.2px;
        letter-spacing: 1.99px;
    }

    .section-core-info h3 {
        font-size: 51.2px;
    }

    .core-item span {
        font-size: 22.4px;
    }

    .core-item p {
        font-size: 19.2px;
        letter-spacing: 1.99px;
    }

    .core-wrapper .item1 img {
        width: 153.6px;
        height: 153.6px;
    }

    .core-wrapper .item2 img {
        width: 153.6px;
        height: 153.6px;
    }

    .core-wrapper .item3 img {
        width: 153.6px;
        height: 153.6px;
    }
} */