.sub1 {
    position: relative;
    z-index: 1;
    background: url(../images/sub1_bg.jpg) no-repeat center 0/cover;
}

.sub1-main {
    padding: 0 0.2rem;
}

.sub1-top {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.2rem 0 0.4rem;
}

.sub1-en {
    position: absolute;
    z-index: 1;
    left: 0;
    bottom: 0.2rem;
}

.sub1-en img {
    width: 1.6rem;
}

.sub1-nav {
    position: relative;
}

.sub1-nav ul {
    display: flex;
}

.sub1-nav ul li {
    padding-right: 0.1rem;
}

.sub1-nav ul a {
    display: block;
    padding: 0 0.3rem;
    font-size: 14px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    background: #5a5a5a;
    border-radius: 5px;
}

.sub1-logo {
    padding: 0;
}

.sub1-logo img {
    width: 1rem;
}

.sub1-box {
    overflow: auto;
    padding: 0.2rem;
    font-size: 14px;
    line-height: 24px;
    color: #000;
    background: rgba(255, 255, 255, 0.85);
    border-radius: 10px;
    border-bottom: 2px solid #db5f2c;
    box-shadow: 0 0 5px #999;
}

.sub1-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.2rem;
}

.sub1-product {
    text-align: left;
}

.sub1-product img {
    width: 2rem;
}

.sub1-more {
    width: 2rem;
}

.sub1-more a {
    display: block;
    font-size: 14px;
    line-height: 24px;
    color: #000;
    text-align: center;
    background: #fff;
}
 .sub1-nav ul li.active a {
        background: #db5f2c;
    }
@media (min-width: 1200px) {
    .sub1 {
        position: relative;
        z-index: 1;
        background: url(../images/sub1_bg.jpg) no-repeat center 0/cover;
    }
    .sub1-main {
        width: 76vw;
        margin: 0 auto;
        padding: 14vw 0 0;
    }
    .sub1-top {
        position: relative;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0 0 1vw;
    }
    .sub1-en {
        position: absolute;
        z-index: 1;
        left: -11vw;
        bottom: 0.5vw;
    }
    .sub1-en img {
        width: 19.2vw;
    }
    .sub1-nav {
        position: relative;
    }
    .sub1-nav ul {
        display: flex;
    }
    .sub1-nav ul li {
        width: 9vw;
        padding-right: 0.4vw;
    }
    .sub1-nav ul a {
        display: block;
        padding: 0;
        font-size: 1.2vw;
        line-height: 3.2vw;
        color: #fff;
        text-align: center;
        background: #5a5a5a;
        border-radius: 1.6vw;
    }
    .sub1-nav ul a:hover {
        background: #db5f2c;
    }
    .sub1-logo {
        padding: 0;
    }
    .sub1-logo img {
        width: 15.8vw;
    }
    .sub1-box {
        height: 34vw;
        overflow: auto;
        padding: 4vw 8vw;
        font-size: 1vw;
        line-height: 1.6vw;
        color: #000;
        background: rgba(255, 255, 255, 0.85);
        border-radius: 1vw;
        border-bottom: 2px solid #db5f2c;
        box-shadow: 0 0 5px #999;
    }
    .sub1-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 76vw;
        margin: 0 auto;
        padding: 3vw 0;
    }
    .sub1-product {
        text-align: left;
    }
    .sub1-product img {
        width: 28vw;
    }
    .sub1-more {
        width: 10.6vw;
    }
    .sub1-more a {
        display: block;
        font-size: 0.9vw;
        line-height: 3vw;
        color: #000;
        text-align: center;
        background: #fff;
    }
    .sub1-more a:hover {
        color: #fff;
        background: #db5f2c;
    }
}

.sub2 {
    padding: 0.4rem 0.2rem;
}

.sub2-main ul {
    display: flex;
}

.sub2-main ul li {
    width: 33.3%;
    padding: 2px;
}

.sub2-main ul a {
    display: block;
    border: 1px solid #000;
}

.sub2-main ul a img {
    width: 100%;
}

@media (min-width: 1200px) {
    .sub2 {
        padding: 4vw 0;
    }
    .sub2-main {
        width: 76vw;
        margin: 0 auto;
    }
    .sub2-main ul {
        display: flex;
    }
    .sub2-main ul li {
        width: 33.3%;
        padding: 0.4vw;
    }
    .sub2-main ul a {
        display: block;
        border: 2px solid #000;
    }
    .sub2-main ul a img {
        width: 100%;
    }
}

.sub3 {
    padding: 0.2rem 0;
    background: url(../images/sub3_bg.jpg) no-repeat center 0/cover;
}

.sub3-main {
    margin: 0 2px;
}

.sub3-title {
    padding: 0 0 0.2rem;
    color: #fff;
    text-align: center;
}

.sub3-title .ch {
    font-size: 18px;
    line-height: 24px;
}

.sub3-title .en {
    font-size: 12px;
    line-height: 18px;
}

.sub3-box {
    position: relative;
    padding: 0 0.2rem;
}

.sub3-prev,
.sub3-next {
    position: absolute;
    z-index: 10;
    top: 50%;
    margin-top: -24px;
    cursor: pointer;
}

.sub3-prev img,
.sub3-next img {
    width: 20px;
}

.sub3-prev {
    left: 0;
}

.sub3-next {
    right: 0;
}

.sub3-banner a {
    display: block;
    margin: 0 0.8vw;
    border: 2px solid #fff;
}

.sub3-banner a img {
    width: 100%;
}

@media (min-width: 1200px) {
    .sub3 {
        padding: 3.5vw 0;
        background: url(../images/sub3_bg.jpg) no-repeat center 0/cover;
    }
    .sub3-main {
        width: 76vw;
        margin: 0 auto;
    }
    .sub3-title {
        padding: 0 0 2.4vw;
        color: #fff;
        text-align: center;
    }
    .sub3-title .ch {
        font-size: 2.4vw;
        line-height: 3vw;
    }
    .sub3-title .en {
        font-size: 0.9vw;
        line-height: 1.2vw;
    }
    .sub3-box {
        position: relative;
        padding: 0 4vw;
    }
    .sub3-prev,
    .sub3-next {
        position: absolute;
        z-index: 10;
        top: 50%;
        margin-top: -2vw;
        cursor: pointer;
    }
    .sub3-prev img,
    .sub3-next img {
        width: auto;
    }
    .sub3-prev {
        left: 0;
    }
    .sub3-next {
        right: 0;
    }
    .sub3-banner a {
        display: block;
        margin: 0 0.8vw;
        border: 2px solid #fff;
    }
    .sub3-banner a img {
        width: 100%;
    }
}