.tab {
    width: 1204px;
    margin: 0 auto;
    padding: 30px 0;
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    color: #2C2C2C;
    opacity: 1;
}
.product {
    width: 1204px;
    margin: 0 auto;
    background: #ffffff;
    padding: 80px 40px 55px;
}
body {
    background: #F6F6F9;
}
.product_main {

}
.product_title {
    width: 624px;
    height: 84px;
    position: relative;
    margin: 0 auto;
    background-image: url("../image/product12.png");
    background-size: 624px 84px;
}
.product_title_info {
    width: 300px;
    height: 84px;
    font-size: 60px;
    font-weight: 800;
    line-height: 84px;
    color: #262626;
    position: absolute;
    top: -20px;
    left: calc(50% - 150px);
}
.product_one {
    width: 1124px;
    height: 500px;
    margin-top: 40px;
    background-image: url("https://energy01.oss-cn-shanghai.aliyuncs.com/upload/3A/web_static/product4.png");
    background-size: 1124px 500px;
    position: relative;
    overflow: hidden;
}
.product_one_logo {
    width: 300px;
    height: 42.56px;
    background-image: url("../image/product5.png");
    background-size: 300px auto;
    margin: 99px auto 0;
}
.string {
    width: 40px;
    height: 2px;
    background: #0062BE;
    opacity: 1;
}
.product_one_a {
    width: 622px;
    height: 42px;
    font-size: 30px;

    font-weight: 500;
    line-height: 42px;
    color: #FFFFFF;
    opacity: 1;
    margin: 65px auto 0;
}

.product_one_b {
    width: 1032px;
    height: 132px;
    margin: 32px auto 0;
    font-size: 20px;

    font-weight: 500;
    line-height: 36px;
    color: #FFFFFF;
    opacity: 1;
    text-align: center;
}

.product_tow {
    width: 1124px;
    height: 600px;
    overflow: hidden;
    background-image: url("https://energy01.oss-cn-shanghai.aliyuncs.com/upload/3A/web_static/product13.png");
    background-size: 1124px 600px;
    position: relative;
}
.product_tow_tit {
    width: 343px;
    height: 18px;
    margin: 108px auto 0;
    background-image: url("../image/product6.png");
    background-size: 343px auto;
    position: relative;
}
.product_tow_tit_info {
    width: 176px;
    height: 62px;
    font-size: 44px;

    font-weight: bold;
    line-height: 44px;
    color: #1A1A1A;
    opacity: 1;
    position: absolute;
    top: -16px;
    left: calc(50% - 88px);
}
.product_tow_main {
    display: flex;
    margin: 74px auto 0;
    width: 1124px;
}
.flex1 {
    flex: 1;
}
.flex1 img {
    width: 128px;
    height: 128px;
    display: block;
    margin: 0 auto;
}
.flex1_tit {
    margin-top: 12px;
    font-size: 30px;
    text-align: center;
    font-weight: 500;
    line-height: 44px;
    color: #242424;
    opacity: 1;
}
.flex1_info {
    width: 206px;
    height: 58px;
    font-size: 20px;
    font-weight: 500;
    line-height: 30px;
    text-align: center;
    color: #868686;
    opacity: 1;
    margin: 20px auto 0;
}
.product_three {
    width: 1124px;
    height: 707px;
    background-image: url("https://energy01.oss-cn-shanghai.aliyuncs.com/upload/3A/web_static/product10.png");
    background-size: 1124px 707px;
    overflow: hidden;
}
.product_three_tit {
    width: 457px;
    height: 18px;
    background-image: url("../image/product11.png");
    background-size: 457px 18px;
    margin: 98px auto 0;
    position: relative;
}
.product_three_tit_a {
    width: 308px;
    height: 62px;
    font-size: 44px;

    font-weight: bold;
    line-height: 44px;
    color: #1A1A1A;
    opacity: 1;
    position: absolute;
    top: -16px;
    left: calc(50% - 154px);
}
.product_three_info {
    width: 480px;
    height: 42px;
    font-size: 30px;

    font-weight: 500;
    line-height: 44px;
    color: #242424;
    opacity: 1;
    margin: 50px auto;
}
.product_four {
    width: 1124px;
    background: #F7F7F7;
    padding: 80px 69px 62px 62px;
}
.product_four_li {
    display: flex;
}
.product_four_li_info {
    flex: 1;
}
.product_four_li_info img {
    width: 490px;
    height: 299px;
    display: block;
}
.product_four_li_info_tit {
    font-size: 28px;
    font-weight: bold;
    line-height: 44px;
    color: #242424;
    opacity: 1;
}
.product_four_li_info_introduce {
    margin-top: 40px;
    font-size: 20px;
    font-weight: 500;
    line-height: 36px;
    color: #868686;
    opacity: 1;

}
.note {
    margin-top: 21px;
    padding: 22px 67px 22px 32px;
    width: 993px;
    height: 89px;
    background: #EDF3F8;
    opacity: 1;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    line-height: 24px;
    color: #868686;
}
.img_note {
    text-align: center;
    font-size: 20px;
    font-weight: 500;
    line-height: 36px;
    color: #868686;
    opacity: 1;
}
.downBtn {
    cursor: pointer;
    width: 105px;
    height: 105px;
    background-image: url("../image/product3.png");
    background-size: 105px 105px;
    margin: 57px auto 0;
    overflow: hidden;
}
.downimg {
    width: 24px;
    height: 23px;
    display: block;
    margin: 28px auto 0;
}
.down_text {
    width: 56px;
    height: 20px;
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    color: #FFFFFF;
    opacity: 1;
    text-align: center;
    cursor: pointer;
    margin: 5px auto 0;
}