.box-head {
    padding: 5rem 0;
    padding-bottom: 0;
}
.box-head .title {
    font-size: 2.5rem;
    font-weight: bold;
    text-align: center;
}

.box-head .list {
    margin: 0 auto;
    margin-top: 3rem;
    width: 40%;
}
.box-head .list li {
    padding: 1.5rem 0;
    display: flex;
    font-size: 2rem;
    font-weight: bold;
}
.box-head .list li .step {
    width: 10rem;
    text-align: center;
    align-items: center;
    justify-content: center;
}
.box-head .list li .info {
    flex: 1;
}
.box-head .list li .info .name {
}
.box-head .list li .desc {
    padding-top: 1rem;
    font-size: 1.5rem;
    font-weight: normal;
    color: #666666;
}
.box-head .help {
    margin-top: 2rem;
    text-align: center;
}
.box-head a {
    color: blue;
}

.start-bar {
    padding: 3rem 0;
    background-color: #212843;
    text-align: center;
    font-size: 3.5rem;
    font-weight: bold;
    color: #FFFFFF;
}


.box-steps {
}
.box-step-item {
    padding: 3rem 2rem;
    background-color: #FFFFFF;
    border-bottom: .3rem solid #212843;
}
.box-step-item:nth-child(2n) {
    background-color: #F1F1F1;
}
.box-step-item .step-title {
    font-size: 2rem;
    font-weight: bold;
}
.box-step-item .step-content {
    padding-top: 2rem;
    color: #333333;
}
.box-step-item .step-content p {
    padding-bottom: 1rem;
    line-height: 1.5rem;
}
.box-step-item .step-content img {
    max-width: 100%;
}


/* 软件下载 */
.system-item {
    margin-top: 2rem;
    padding-bottom: 2rem;
    border-bottom: .1rem solid #212843;
}
.system-item:last-child {
    border: none;
}
.system-item .system-name {
    font-size: 1.5rem;
    font-weight: bold;
}

.soft-list {
    padding: 0 3rem;
    padding-top: 1rem;
}
.soft-item {
    display: flex;
    padding: 1rem 0;
    border-bottom: .1rem dashed #212843;
}
.soft-item:last-child {
    border-bottom: none;
}
.soft-item .name {
    width: 20%;
    font-weight: bold;
}
.soft-item .download {
    flex: 1;
}
.soft-item .doc {
    width: 15%;
}
.soft-item .desc {
    width: 20%;
}


.tryout-box {
    margin-top: 5rem;
}
.help-box {
    margin-top: 5rem;
    margin-bottom: 5rem;
}



@media screen and (max-width: 1180px) {
    .box-head .title {
        line-height: 4rem;
    }
    .box-head .list {
        width: 60%;
    }
    .soft-item {
        line-height: 2rem;
    }
}

@media screen and (max-width: 980px) {
    .box-head .list {
        width: 80%;
    }
    .box-head .help {
        line-height: 2rem;
    }
    .start-bar {
        font-size: 2.8rem;
    }
}

@media screen and (max-width: 780px) {
    .box-head .list {
        width: 100%;
    }
    .start-bar {
        font-size: 2rem;
    }
    .soft-list {
        padding-left: 0;
        padding-right: 0;
    }
    .soft-item {
        display: block;
    }
    .soft-item .name {
        width: 100%;
    }
    .soft-item .download,
    .soft-item .doc,
    .soft-item .desc {
        padding-left: 3rem;
        width: auto;
    }
}

@media screen and (max-width: 500px) {
    .box-head {
        padding: 2rem 0;
    }
    .box-head .title {
        font-size: 1.5rem;
        line-height: 2rem;
    }

    .box-head .list {
        margin-top: 1rem;
    }
    .box-head .list li {
        padding: 1rem 0;
        font-size: 1.5rem;
    }
    .box-head .list li .step {
        width: 8rem;
    }
    .box-head .list li .desc {
        font-size: 1rem;
    }

    .start-bar {
        font-size: 1.5rem;
    }

    .box-step-item {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    .box-step-item .step-title {
        font-size: 1.5rem;
    }

    .soft-item .download,
    .soft-item .doc,
    .soft-item .desc {
        padding-left: 0rem;
        width: auto;
    }

    .foot-help {
        padding: 2rem 0.5rem;
        line-height: 2rem;
        font-size: 1.2rem;
    }
}