/* 重置 */
h1, h2, h3, h4, h5, h6, p {
    padding: 0;
    margin: 0;
}

a, img {
    display: block;
    text-decoration: none;
}
/* 页面样式Start */
body {
    padding: 0;
    margin: 0;
    width: 100vw;
    height: 100vh;
    box-sizing: border-box;
    padding: 80px 80px 140px 80px;
    font-family: pingfang SC,helvetica neue,arial,hiragino sans gb,microsoft yahei ui,microsoft yahei,simsun,sans-serif !important;
    background: url(http://images.mixsense-iot.com/staticfiles/newfireplatform/background_image.png) no-repeat top center;
    background-size: cover;
}

.top_title {
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
}

.logo_box {
    width: 110px;
    height: 110px;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
    img

{
    width: 100%;
    height: 100%;
}

}

.system_name {
    font-size: 34px;
    color: #1b1b1b;
}

.content_box {
    position: fixed;
    bottom: 130px;
    left: 80px;
    width: calc(100vw - 160px);
}

.mixsense_btn {
    height: 36px;
    width: 132px;
    background: #3787FF;
    color: #fff;
    font-size: 14px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 40px;
    margin-bottom: 18px;
    transition: all 0.5s ease-in-out;
}

    .mixsense_btn:hover {
        background: #005aff;
    }

.company_logo {
    width: 12px;
    height: 12px;
    overflow: hidden;
    margin-right: 3px;
    opacity: 0.7;
}

    .company_logo img {
        width: 100%;
        height: 100%;
    }

.introduce {
    max-width: 867px;
}

    .introduce p {
        text-align: justify;
        line-height: 1.5;
        color: #1B1B1B;
    }

        .introduce p:nth-child(2) {
            margin-top: 13px;
            font-size: 10px;
            text-align: justify;
            line-height: 1.3;
            color: rgba(27, 27, 27, 0.5);
        }

.copy {
    position: fixed;
    left: 50%;
    bottom: 29px;
    transform: translateX(-50%);
    font-size: 14px;
    color: rgba(27, 27, 27, 0.4);
}