@import url('normalize.css');
:root {
    --header-height: 120px;
    --footer-height: 260px;
    --base-size-lg: 18px;
    --base-size: 16px;
    --base-size-md: 15px;
    --base-size-sm: 14px;
    --base-size-xs: 13px;
    --base-font: 'Microsoft YaHei', Roboto, 'Helvetica Neue', Arial;
    --base-bg: #fff;
    --base-color: #000;
    --base-title-color: #4B67C6;
    --margin-x: 20px;
    --width-full: 19.2;
    --font-44: calc((44 / var(--width-full)) * 1vw);
    --font-40: calc((40 / var(--width-full)) * 1vw);
    --font-24: calc((24 / var(--width-full)) * 1vw);
    --font-18: calc((18 / var(--width-full)) * 1vw);
    --font-16: calc((16 / var(--width-full)) * 1vw);
}
html,
body {
    width: 100%;
    height: 100%;
    font-size: var(--font-16);
    font-family: var(--base-font);
    line-height: 1.25;
    background-color: var(--base-bg);
    color: var(--base-color);
}
* {
    transition: .25s all;
}
.relative {
    position: relative;
}
.fixed {
    position: fixed;
}
.absolute {
    position: absolute;
}
.flex-center {
    justify-content: center;
    align-items: center;
}
.items-center {
    align-items: center;
}
.items-start {
    align-items: flex-start;
}
.items-end {
    align-items: flex-end;
}
.justify-cnter {
    justify-content: center;
}
.justify-left {
    justify-content: left;
}
.justify-right {
    justify-content: right;
}
.justify-between {
    justify-content: space-between;
}
.w-full {
    width: 100%
}
.h-full {
    height: 100%
}
.mx-10 {
    margin-left: var(--margin-x);
    margin-right: var(--margin-x);
}
.flex {
    display: flex;
}
.row {
    flex-direction: row;
}
.row .items {
    width: 50%;
}
.col {
    flex-direction: column;
}
.col .items {
    width: 100%;
}
.rows {
    width: 33.3%;
}
h1 {
    font-size: var(--font-44);
    color: var(--base-title-color);
}
h2 {
    font-size: var(--font-40);
    color: var(--base-title-color);
}
.container {
    width: 80%;
    max-width: 1440px;
    margin: auto;
}
.title {
    color: #626262;
    font-size: var(--font-24);
    font-weight: 700;
    display: inline-block;
    padding-bottom: 25px;
    background-image: url(../images/ImgTitle.webp);
    background-repeat: no-repeat;
    background-position: left bottom;
    background-size: contain;
}
.desc {
    color: #5D5D5D;
    font-size: var(--font-18);
}
.text {
    color: #212529;
}
.join {
    right: 0;
}
.ai {
    padding-top: 30px;
    background: linear-gradient(180deg, #FFFFFF 0%, #AECEFD 85%);
}
.about {
    min-height: calc((650 / var(--width-full)) * 1vw);
    background-image: url(../images/ImgAboutBG.webp);
}
.services {
    min-height: calc((950 / var(--width-full)) * 1vw);
    background-image: url(../images/ImgServiceBG.webp);
}
.services .top .text {
    width: 50%;
    text-align: center;
    margin-bottom: 30px;
}
.services .card {
    padding: 1.5vw 1.5vw 2vw;
    margin: .8vw;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.16);
    background-repeat: no-repeat;
    background-size: cover;
}
.services .card:hover {
    background-image: url(../images/ServicesItemBG_h.webp);
}
.services .card:hover .text, .services .card:hover .desc {
    color: #fff;
}
.services .card .data-img {
    width: 15%;
}
.services .card .text {
    font-size: var(--font-24);
    padding: .75vw 0 1vw;
}
.advantage, .ai-blockchain {
    min-height: calc((750 / var(--width-full)) * 1vw);
    background-image: url(../images/ImgAdvanBG.webp);
}
.advantage .left, .ai-blockchain .right {
    width: 60%;
}
.advantage .right, .ai-blockchain .left {
    width: 40%;
    text-align: right;
}
.advantage .text, .ai-blockchain .text {
    padding-bottom: 2vw;
    padding-right: 2vw;
}
.ai-blockchain .right {
    padding-left: 2vw;
}
.ai-blockchain .title {
    background-size: auto;
}
.teams {
    min-height: calc((650 / var(--width-full)) * 1vw);
    background-image: url(../images/ImgTeamsBG.webp);
}
.teams .rows {
    position: relative;
}
.teams .rows img {
    width: 100%;
    box-shadow: 0px 4px 16px 0px rgba(0, 0, 0, 0.16);
    border-radius: 12px;
}
.data-img {
    position: relative;
}
[data-img]:hover {
    img:not(.bg) {
        opacity: 0;
    }
    filter: drop-shadow(16px 16px 20px block);
    .bg {
        filter: brightness(0.4) grayscale(80%);
    }
    .data-img::after {
        width: 100%;
        height: 100%;
        position: absolute;
        z-index: 1;
        top: 0;
        left: 0;
        /* content: var(--img-url); */
        content: '';
        background-size: cover;
        background-image: var(--img-url);
        /*
        /* background-image: attr(data-img); */
        /* background-image: url(attr(data-img url)); */
        /* background-image: url('../images/ImgTeams01_h.webp'); */
    }
}
.teams .slogan {
    width: 100%;
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 2;
    transform: translate(-50%, -50%);
    text-align: center;
    font-size: var(--font-24);
    text-shadow: 0px 0px 2px #fff, 0px 0px 2px #fff, 0px 0px 2px #fff, 0px 0px 2px #fff,
    0px 2px 4px rgba(0, 0, 0, 0.75);
}
.copy-right {
    padding-top: 20px;
}
header {
    height: var(--header-height);
    box-shadow: 0px 4px 16px 0px rgba(0, 0, 0, 0.08);
    z-index: 1;
}
footer {
    height: var(--footer-height);
    color: #fff;
    font-size: var(--font-14);
    background: linear-gradient(180deg, #253E5E 0%, #061220 100%);
}

@media (max-width: 768px) {
    :root {
        --header-height: 100;
        --footer-height: 240px;
        --width-full: 7.68;
    }
    header {
        justify-content: center;
    }
    header img{
        max-width: 70vw;
        margin: auto;
    }
    footer .logo{
        width: 70vw;
        margin-bottom: 20px;
    }
    footer .join img {
        width: 50px;
    }
    section {
        padding: var(--margin-x);
        text-align: center;
    }
    .container {
        width: 100%;
    }
    .container > .row {
        flex-direction: column;
    }
    .items {
        width: 100% !important;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
    }
    .h5-row {
        flex-direction: column;
    }
    .h5-row .rows {
        width: 100%;
        margin: 0;
    }
    .title {
        background-position: bottom;
    }
    .join {
        position: relative;
    }
    .ai .top {
        display: none;
    }
    .ai img {
        max-height: 70vw;
    }
    .about .top{
        padding: 50px 0 0;
    }
    .about img{
        width: 94vw;
    }
    .about .title{
        position: absolute;
        top: 0;
    }
    .about .bottom .text {
        margin-bottom: 40px;
    }
    .services .top .text {
        width: 100%;
    }
    .services .card {
        display: flex;
        align-items: center;
        padding: 20px;
        margin-bottom: 15px;
    }
    .services .card .data-img {
        margin-right: 30px;
    }
    .services .card img {
        height: fit-content;
        display: flex;
    }
    .services .card .data-img + div {
        text-align: left;
    }
    .services .card .text {
        margin-bottom: 15px;
    }
    .advantage img, .ai-blockchain img {
        width: 98vw;
    }
    .teams .rows {
        margin-bottom: 20px;
    }
    .teams img {
        width: 90vw;
    }
    .teams .slogan {
        width: 100%;
    }
}

@media (max-width: 440px) {
    :root {
        --width-full: 4.4;
    }
    .services .card .data-img {
        width: 40%;
    }
}