#app{
    overflow: auto;
}

.app-header {
    position: fixed;
    left: 0px;
    top: 0px;
    height: 60px;
    width: 100%;
    background: rgba(0, 0, 0, 0.616);
    z-index: 999;
}

.app-title-container {
    position: absolute;
    left: 20px;
    color: white;
    font-size: 20px;
    font-weight: 600;
    line-height: 56px;
    display: flex;
    align-items: center;
}

.app-title {
    font-size: 32px;
    user-select: none;
    cursor: pointer;
}

.menu-container {
    position: absolute;
    right: 20px;
    text-wrap: nowrap;
}

.menu-item { 
    cursor: pointer;
    color: white;
    line-height: 60px;
    font-family: "PingFang SC,Helvetica Neue,Helvetica,Tahoma,Arial,sans-serif";
    font-size: 18px;
    height: 100%;
    display: inline-block;
    padding: 0px 10px;
    box-sizing: border-box;
    user-select: none;
}

.menu-item:hover {
    color: #f08519;
    background: #284b917d;
    border-bottom: 1px solid #00ff51;
}

.menu-item-activate {
    color: #f08519;
    background: #284b917d;
    border-bottom: 1px solid #00ff51;
}

.app-content{
    height: 100%;
    width: 100%; 
}


.carousel { 
    width: 100%;
    background: rgba(0, 0, 0, 0.465); 
}



.xt3d-define-container {
    height: 488px;
    width: 100%;
    background: #171b2c;
    position: relative;
}

.xt3d-define-text {
    position: absolute;
    top: 90px;
    color: #3abfa2;
    font-size: 28px;
    width: 100%;
}

 
.start-button {
    width: 170px;
    height: 60px;
    background-color: hsl(0deg 0% 100% / 42%);
    border-radius: 30px;
    text-align: center;
    line-height: 60px;
    font-size: 25px;
    font-family: SourceHanSansCN-Medium;
    position: absolute;
    color: #05fde9;
    cursor: pointer;
    user-select: none;
}

.start-button:hover {
    /* background-color: hsla(0, 0%, 100%, 0.349); */
    background: #00ffaf82;
}



/* xt3d 优势 */
.xt3d-super {
    /* height: 1180px; */
    width: 100%;
    /* background: url(../images/index/bg4.png) no-repeat; */
    background: black;
    background-size: cover;
    display: flex;
    justify-content: center;
    position: relative;
    padding-top: 90px;
    padding-bottom: 30px;
}

.xt3d-header {
    position: absolute;
    top: 8px;
    left: 0px;
    height: 40px;
    line-height: 40px;
    margin: 20px 0px;
    width: 100%;
    color: white;
    font-size: 32px;
    font-weight: 600;
    display: flex;
    justify-content: center;
}

.super-wrapp {
    /* width: 1420px; */
    width: 86%;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    align-content: flex-start;
    position: relative;
}

.super-card {
    height: 279px;
    width: 500px;
    margin: 10px;
    /* box-shadow: 10px 10px 5px #181b2c; */
    box-shadow: 10px 10px 5px #181b2c3d;
    position: relative;
    border-bottom-left-radius: 5px;
    border-bottom-right-radius: 5px;
}

.super-header {
    color: #ffffffab;
    text-align: center;
    padding: 10px 0px;
    height: 40px;
    line-height: 40px;
    font-size: 24px;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}

.super-content {
    color: white;
    font-size: 20px;
    padding: 20px;
    height: 180px;
    background: #24303161;
    line-height: 32px;
}



/* 联系方式 */
.contcat-container {
    color: rgba(255, 255, 255, 0.657);
    /* background: #171b2c; */
    background: #171718f0;
    padding-bottom: 30px;
    padding-top: 50px;
    position: relative;
    display: flex;
}

.contcat-container img {
    height: 146px;
    width: 146px;
}

.link-text1 {
    position: absolute;
    font-size: 18px;
    left: 100px;
    top: 20px; 
}

.contcat-item {
    margin: 20px 30px;
    text-align: center;
}

.link-text2 {
    position: absolute;
    font-size: 18px;
    left: 544px;
    top: 20px;
}

.link-container a {
    color: rgba(255, 255, 255, 0.534);
    font-size: 16px;
    margin: 20px;
}

.link-a {
    margin: 20px;
}