body {
    font-size: 0px;
}

.cover {
    position: relative;
}

.cover-wall {
    position: relative;
}

.cover-wall video, .cover-wall img {
    width: 100%;
}

.cover-content {
    position: absolute;
    top: 50%;
    left: 0px;
    width: 100%;
    margin-top: -130px;
}

.cover-title {
    text-align: center;
    font-size: 0px;
}

.cover-title span {
    display: inline-block;
    vertical-align: top;
    line-height: 80px;
    font-size: 48px;
    font-weight: 800;
    color: white;
    text-shadow: 0px 4px 4px rgba(0, 0, 0, 0.5);
}

.cover-title span:nth-child(1n+2) {
    margin-left: 50px;
}

.cover-desc {
    margin-top: 30px;
    text-align: center;
    font-size: 0px;
}

.cover-desc span {
    display: inline-block;
    vertical-align: top;
    line-height: 30px;
    font-size: 16px;
    color: white;
    text-shadow: 0px 4px 4px rgba(0, 0, 0, 0.5);
}

.cover-desc span:nth-child(1n+2) {
    margin-left: 20px;
}

.cover-link {
    max-width: 600px;
    margin: 50px auto 0px auto;
    text-align: right;
    font-size: 0px;
}

.cover-link a {
    display: inline-block;
    background-color: #1170ff;
    color: white;
    font-size: 20px;
    line-height: 50px;
    border-radius: 25px;
    cursor: pointer;
    padding: 0px 40px;
}

.products {
    position: relative;
}

.products-wall {
    background-image: url('/res/index/wall-2.jpg');
    background-position: bottom center;
    background-repeat: no-repeat;
    background-size: cover;
    height: 800px;
}

.products-content {
    position: absolute;
    top: 50%;
    left: 0px;
    width: 100%;
    margin-top: -300px;
}

.products-title {
    font-size: 0px;
    padding: 0px 30px;
}

.products-title span {
    display: inline-block;
    vertical-align: top;
    font-size: 24px;
    font-weight: 800;
}

.products-title span:nth-child(1n+2) {
    margin-left: 20px;
}

.products-desc {
    margin-top: 30px;
    font-size: 16px;
    padding: 0px 30px;
}

.products-desc span {
    display: inline-block;
    vertical-align: top;
    line-height: 30px;
    font-size: 16px;
    color: white;
    text-shadow: 0px 4px 4px rgba(0, 0, 0, 0.5);
}

.products-marquee {
    margin-top: 100px;
    font-size: 0px;
    height: 320px;
    overflow: hidden;
    position: relative;
}

.products-strip {
    white-space: nowrap;
}

.products-item {
    display: inline-block;
    vertical-align: top;
    position: relative;
    width: 480px;
    height: 320px;
}

.products-item:nth-child(1n+2) {
    margin-left: 30px;
}

.products-item-photo {
    position: absolute;
    top: 0px;
    left: 0px;
    width: 100%;
    height: 100%;
    border-radius: 20px;
}

.products-item-text {
    position: absolute;
    left: 50px;
    right: 50px;
    bottom: 40px;
    white-space: normal;
}

.products-item-text div:nth-child(1) {
    color: white;
    font-size: 24px;
    font-weight: 800;
}

.products-item-text div:nth-child(2) {
    margin-top: 20px;
    color: white;
    font-size: 14px;
    line-height: 24px;
}

.products-strip {
    position: absolute;
    top: 0px;
    left: 0px;
    animation: products-strip 30s linear infinite;
}

.products-strip:hover {
    animation-play-state: paused;
}

@-webkit-keyframes products-strip {
    0% {
        left: 0px;
    }
    100% {
        /* 每个图片宽 480px，间隔 30px */
        left: -4080px;
    }
}

.board {
    padding: 80px 0px 0px 0px;
}

.board .wide {
    overflow: hidden;
    text-align: center;
}

.board-desc {
    padding: 0px 30px;
    text-align: left;
}

.board-desc div:nth-child(1) {
    display: inline-block;
    vertical-align: bottom;
    font-size: 24px;
    font-weight: 800;
}

.board-desc div:nth-child(2) {
    display: inline-block;
    vertical-align: bottom;
    margin-left: 20px;
}

.board-desc div:nth-child(2) span {
    display: inline-block;
    vertical-align: bottom;
    font-size: 16px;
}

.board-desc div:nth-child(2) span:nth-child(1n+2) {
    margin-left: 20px;
}

.board-stack {
    display: inline-block;
    margin: 60px auto 0px auto;
    position: relative;
    width: 1050px;
    height: 590px;
    overflow: hidden;
}

.board-stack img {
    position: absolute;
    width: 900px;
    height: 500px;
    transition: all 0.5s ease-in-out;
}

.exp {}

.exp .wide {
    position: relative;
    padding-top: 60px;
}

.exp-wall {
    width: 100%;
}

.exp-content {
    z-index: 2;
}

.exp-title {
    font-size: 32px;
}

.exp-desc {
    margin: 0px auto;
    margin-top: 40px;
    max-width: 800px;
    font-size: 16px;
    text-align: left;
    padding: 0px 30px;
}

.exp-flex {
    max-width: 1000px;
    margin: 60px auto 0px auto;
}

.exp-flex img {
    width: 100%;
}

.case {
    margin-top: 40px;
}

.case .wide {
    max-width: 900px;
}

.case-title {
    font-size: 32px;
    text-align: center;
}

.case-images {
    height: 600px;
    position: relative;
    overflow: hidden;
}

.case-images img {
    position: absolute;
    width: 860px;
    height: 480px;
    top: 50%;
    left: 50%;
    margin-top: -240px;
    margin-left: -430px;
    transition: all 0.4s ease-in-out;
    opacity: 0;
    transform: scale(0.5);
}

.case-images img[tick-previous] {
    left: calc(50% - 850px);
    transform: scale(0.7);
    opacity: 0.3;
    z-index: 2;
}

.case-images img[tick-current] {
    transform: scale(1);
    opacity: 1;
    z-index: 3;
}

.case-images img[tick-next] {
    left: calc(50% + 850px);
    transform: scale(0.7);
    opacity: 0.3;
    z-index: 2;
}

.case .wide {
    padding: 0px 30px;
}

.case-titles div {
    display: none;
}

.case-titles div span {
    display: inline-block;
    vertical-align: top;
    font-size: 24px;
    color: #1170ff;
}

.case-titles div span:nth-child(1n+2) {
    margin-left: 20px;
}

.case-titles div[tick-current] {
    display: block
}

.case-lines {
    margin-top: 20px;
    overflow: hidden;
    white-space: nowrap;
}

.case-lines span {
    display: inline-block;
    vertical-align: top;
    width: 50px;
    height: 4px;
    box-sizing: border-box;
    background-color: #dfdfdf;
    transition: all 0.3s ease-in-out;
}

.case-lines span:nth-child(1n+2) {
    margin-left: 10px;
}

.case-lines span[tick-current] {
    background-color: #1170ff;
    width: calc(100% - 540px);
}

.case-ourprojects {
    margin-top: 20px;
    font-size: 16px;
}

.case-factories {
    margin-top: 10px;
    min-height: 180px;
}

.case-projects {
    display: none;
    padding-bottom: 10px;
}

.case-projects div {
    margin-left: 10px;
    font-size: 16px;
    line-height: 32px;
}

.case-projects div::before {
    content: '· ';
    margin-right: 10px;
}

.case-projects[tick-current] {
    display: block;
}

.invite {
    position: relative;
    overflow: hidden;
}

.invite-wall {
    background-color: black;
    background-image: url('/res/index/invite-wall.jpg');
    background-position: bottom center;
    background-repeat: no-repeat;
    background-size: cover;
    height: 600px;
}

.invite-info {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 600px;
    height: 400px;
    margin: -200px 0px 0px -500px;
}

.invite-info-title div {
    line-height: 80px;
    font-size: 32px;
    font-weight: 800;
    color: white;
}

.invite-info-items {
    margin-top: 50px;
}

.invite-info-item {
    position: relative;
    padding-left: 40px;
}

.invite-info-item:nth-child(1n+2) {
    margin-top: 15px;
}

.invite-info-item img {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 20px;
    height: 20px;
}

.invite-info-item span {
    display: inline-block;
    line-height: 40px;
    font-size: 16px;
    color: white;
}

.invite-form {
    position: absolute;
    z-index: 5;
    top: calc(50% - 200px);
    left: calc(50% + 150px);
    width: 300px;
    height: 400px;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    border-radius: 10px;
}

.invite-form-title {
    margin: 0px 40px;
    text-align: left;
    line-height: 40px;
    font-size: 24px;
    color: white;
}

.invite-form-input {
    margin: 30px 40px 0px 40px;
}

.invite-form-input input {
    width: 100%;
    box-sizing: border-box;
    padding: 0px 20px;
    height: 40px;
    color: white;
    background-color: transparent;
    border: none;
    border-radius: 0px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}

.invite-form-submit {
    margin-top: 40px;
}

.invite-form-submit button {
    background-color: #1170ff;
    color: white;
    font-size: 16px;
    height: 50px;
    padding: 0px 30px;
    border-radius: 25px;
}

@media screen and (max-width: 1200px) and (min-width: 800px) {
    .cover-content {
        margin-top: -100px;
    }
    .board-stack {
        transform: scale(0.7);
        margin: -40px -150px;
    }
    .exp-flex {
        max-width: 700px;
    }
    .case-images {
        height: 460px;
    }
    .case-images img {
        position: absolute;
        width: 600px;
        height: 340px;
        margin-top: -170px;
        margin-left: -300px;
    }
    .case-images img[tick-previous] {
        left: calc(50% - 620px);
    }
    .case-images img[tick-next] {
        left: calc(50% + 620px);
    }
    .case-lines span {
        width: 30px;
    }
    .case-lines span[tick-current] {
        width: calc(100% - 450px);
    }
    .invite-info {
        width: 400px;
        margin-left: -350px;
    }
    .invite-info-title div {
        font-size: 24px;
    }
    .invite-form {
        left: calc(50% + 70px);
    }
}

@media screen and (max-width: 800px) and (min-width: 500px) {
    .cover {
        margin-top: 50px;
    }
    .cover-content {
        margin-top: -100px;
    }
    .cover-title span {
        line-height: 40px;
        font-size: 24px;
    }
    .cover-desc {
        margin-top: 15px;
        padding: 0px 20px;
    }
    .cover-link {
        margin-top: 20px;
        text-align: center;
    }
    .cover-link a {
        font-size: 14px;
        line-height: 40px;
        border-radius: 20px;
    }
    .products-wall {
        height: 400px;
    }
    .products-desc {
        margin-top: 15px;
    }
    .products-marquee {
        margin-top: 20px;
        height: 220px;
    }
    .products-content {
        margin-top: -170px;
    }
    .products-item {
        width: 300px;
        height: 200px;
    }
    @-webkit-keyframes products-strip {
        100% {
            /* 每个图片宽 300px，间隔 30px */
            left: -2640px;
        }
    }
    .products-item-photo {
        border-radius: 10px;
    }
    .products-item-text {
        position: absolute;
        left: 20px;
        right: 20px;
        bottom: 10px;
        white-space: normal;
    }
    .products-item-text div:nth-child(1) {
        font-size: 20px;
    }
    .products-item-text div:nth-child(2) {
        margin-top: 10px;
    }
    .board {
        padding-top: 30px;
    }
    .board-stack {
        transform: scale(0.4);
        margin: -140px -315px;
    }
    .board-desc div:nth-child(2) {
        display: block;
        margin-left: 0px;
        margin-top: 10px;
    }
    .exp-flex {
        max-width: 460px;
    }
    .case {
        margin-top: 70px;
    }
    .case-images {
        height: 240px;
    }
    .case-images img {
        position: absolute;
        width: 300px;
        height: 170px;
        margin-top: -85px;
        margin-left: -150px;
    }
    .case-images img[tick-previous] {
        left: calc(50% - 310px);
    }
    .case-images img[tick-next] {
        left: calc(50% + 310px);
    }
    .case-lines span {
        width: 20px;
    }
    .case-lines span[tick-current] {
        width: calc(100% - 270px);
    }
    .invite-wall {
        height: 680px;
    }
    .invite-info {
        top: 20px;
        width: 460px;
        height: 240px;
        margin-top: 0px;
        margin-left: -230px;
    }
    .invite-info-title div {
        font-size: 24px;
        line-height: 40px;
    }
    .invite-info-items {
        margin-top: 20px;
    }
    .invite-info-item:nth-child(1n+2) {
        margin-top: 5px;
    }
    .invite-form {
        top: 280px;
        width: 360px;
        height: 360px;
        left: calc(50% - 180px);
    }
}

@media screen and (max-width: 500px) {
    .cover {
        margin-top: 50px;
    }
    .cover-content {
        margin-top: -70px;
    }
    .cover-title span {
        line-height: 30px;
        font-size: 18px;
    }
    .cover-desc {
        margin-top: 10px;
        padding: 0px 20px;
    }
    .cover-desc span {
        font-size: 12px;
        line-height: 24px;
    }
    .cover-link {
        margin-top: 15px;
        text-align: center;
    }
    .cover-link a {
        font-size: 14px;
        line-height: 36px;
        border-radius: 18px;
    }
    .products-wall {
        height: 330px;
    }
    .products-title {
        text-align: center;
    }
    .products-title span {
        font-size: 18px;
        font-weight: 800;
    }
    .products-desc {
        margin-top: 15px;
        font-size: 14px;
    }
    .products-marquee {
        margin-top: 20px;
        height: 140px;
    }
    .products-content {
        margin-top: -140px;
    }
    .products-item {
        width: 210px;
        height: 140px;
    }
    @-webkit-keyframes products-strip {
        100% {
            /* 每个图片宽 210px，间隔 30px */
            left: -1920px;
        }
    }
    .products-item-photo {
        border-radius: 10px;
    }
    .products-item-text {
        position: absolute;
        left: 20px;
        right: 20px;
        bottom: 10px;
        white-space: normal;
    }
    .products-item-text div:nth-child(1) {
        font-size: 20px;
    }
    .products-item-text div:nth-child(2) {
        margin-top: 5px;
        font-size: 12px;
        line-height: 20px;
    }
    .board {
        padding-top: 10px;
    }
    .board-stack {
        transform: scale(0.3);
        margin: -180px -368px;
    }
    .board-desc div:nth-child(1) {
        font-size: 24px;
        text-align: center;
        display: block;
    }
    .board-desc div:nth-child(2) {
        display: block;
        margin-left: 0px;
        margin-top: 20px;
        text-align: center;
    }
    .board-desc div:nth-child(2) span {
        font-size: 14px;
    }
    .exp {
        margin-top: 40px;
    }
    .exp-title {
        font-size: 24px;
        font-weight: 800;
    }
    .exp-desc {
        margin-top: 20px;
    }
    .exp-flex {
        max-width: 320px;
        margin-top: 20px;
    }
    .case {
        margin-top: 60px;
    }
    .case-title {
        font-size: 24px;
        font-weight: 800;
    }
    .case-images {
        height: 240px;
    }
    .case-images img {
        position: absolute;
        width: 300px;
        height: 170px;
        margin-top: -85px;
        margin-left: -150px;
    }
    .case-images img[tick-previous] {
        left: calc(50% - 290px);
    }
    .case-images img[tick-next] {
        left: calc(50% + 290px);
    }
    .case-titles div span {
        font-size: 18px;
    }
    .case-lines {
        margin-top: 10px;
    }
    .case-lines span {
        width: 20px;
    }
    .case-lines span[tick-current] {
        width: calc(100% - 270px);
    }
    .case-factories {
        min-height: 110px;
    }
    .case-projects div {
        font-size: 14px;
        line-height: 24px;
    }
    .invite {
        margin-top: 30px;
    }
    .invite-wall {
        height: 560px;
    }
    .invite-info {
        top: 20px;
        left: 20px;
        width: calc(100% - 40px);
        height: 240px;
        margin: 0px;
    }
    .invite-info-title div {
        font-size: 20px;
        line-height: 30px;
    }
    .invite-info-items {
        margin-top: 20px;
    }
    .invite-info-item:nth-child(1n+2) {
        margin-top: 5px;
    }
    .invite-info-item img {
        top: 5px;
    }
    .invite-info-item span {
        font-size: 14px;
        line-height: 30px;
    }
    .invite-form {
        top: 260px;
        left: 20px;
        width: calc(100% - 40px);
        height: 280px;
        border-radius: 10px;
    }
    .invite-form-title {
        margin: 0px 30px;
        line-height: 30px;
    }
    .invite-form-input {
        margin-top: 15px;
    }
    .invite-form-submit {
        margin-top: 30px;
    }
}