.banner {
    position: relative;
    padding-bottom: calc(760/1920*100%);
    overflow: hidden;
}

.banner img {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
}

@keyframes slideBannerA {
    0%   {opacity: 0; transform: scale(1);}
    30%  {opacity: 1; transform: scale(1.1);}
    40%  {opacity: 1;}
    50%  {opacity: 1;}
    65%  {opacity: 0;transform: scale(1.1);}
    90%  {opacity: 0;transform: scale(1);}
    100% {opacity: 0;}
}

@keyframes slideBannerB {
    0%   {opacity: 0; transform: scale(1);}
    30%  {opacity: 1; transform: scale(1.1);}
    40%  {opacity: 1;}
    50%  {opacity: 1;}
    65%  {opacity: 0;transform: scale(1.1);}
    90%  {opacity: 0;transform: scale(1);}
    100% {opacity: 0;}
}

@keyframes slideText {
    0%   {opacity: 0;}
    30%  {opacity: 1;}
    40%  {opacity: 1;}
    50%  {opacity: 1;}
    65%  {opacity: 0;}
    90%  {opacity: 0;}
    100% {opacity: 0;}
}

#b1a {
    animation-name: slideBannerA;
    animation-duration: 16s;
    animation-iteration-count: infinite;
}

#b1b {
    animation-name: slideBannerB;
    animation-delay: 8s;
    animation-duration: 16s;
    animation-iteration-count: infinite;
}

.banner span {
    position: absolute;
    color: black;
    font-size: 12px;
    bottom: 10px;
    right: 10%;
    animation-name: slideText;
    animation-duration: 16s;
    animation-iteration-count: infinite;
}


/* 针对改善头皮健康 */
.improve{
    background: url(../img/index/pc/1.png) no-repeat;
    background-size: 100% 100%;
    padding: 50px 0;
    text-align: center;
}
.improve h2{
    color: #1980cf;
    font-size: 24px;
    font-weight: bold;
    line-height: 1.1;
}
.improve p{
    font-size: 16px;
    color: #494949;
    margin: 10px 0 20px;
    line-height: 2;
}
.improve .improve_img{
    width: 30%;
    margin: 30px auto 0;
}
.improve .improve_img img{
    width: 100%;
}


.lattice .float_group > div {
    width: 50%;
    height: calc(49vw * 435 / 953);
    overflow: hidden;
}

.lattice .float_group > div img {
    width: 100%;
    height: 100%;
    vertical-align:middle;
}

.lattice .float_group > div .title{
    color: #0071B8;
    font-size: 24px;
    font-weight: bold;
    line-height: 1.1;
}
.title_mobile {
    color: #0071B8;
    font-size: 24px;
    font-weight: bold;
    line-height: 1.1;
    display: none;
}
.lattice .float_group > div .text{
    color: #494949;
    margin: 10px 0 20px;
    line-height: 2;
    font-size: 16px;
}
.float_group > div .text0 {
    color: #494949;
    margin: 10px 0 20px;
    line-height: 2;
}
.lattice .float_group > div a{
    display: inherit;
    text-decoration: none;
}
.lattice .float_group > div button {
    position: relative;
    width: 120px;
    height: 40px;
    margin-left: calc(50% - 60px);
    border: 0;
    outline: 0;
    background: linear-gradient(to right, #225ac9, #83caf7);
    color: white;
    font-size: 14px;
    overflow: hidden;
    text-align: left;
    padding: 0 32px;
    transition: width .2s ease-in-out, background .2s ease-in-out;
    cursor: pointer;
}
.lattice .float_group > div button:hover {
    width: 130px;
}
.arrow_right {
    position: absolute;
    pointer-events: none;
    left: 130px;
    top: 14px;
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-left: 10px solid white;
    transition: left .2s ease-in-out;
}
.lattice .float_group > div button:hover .arrow_right {
    left: 105px;
}

.step {
    padding: 80px 20px 20px;
    background-color: #dfebef;
    text-align: center;
}
.step .title {
    color: #1980cf;
    font-size: 24px;
    font-weight: bold;
    line-height: 1.1;
}
.step .text{
    color: #494949;
    margin-top: 10px;
}

.step .item{
    display: inline-block;
    margin: 20px 40px 0;
}
.step .item .text1{
    color: #1980cf;
    font-size: 20px;
}
.step .item .text2{
    color: #494949;
}

.step .note {
    font-size: 12px;
    text-align: right;
    margin-top: 60px;
    padding-right: 10%;
}

.product{
    background: #f1f1f1;
    padding-top: 30px;
}
.product h2{
    text-align: center;
    color: #1980CF;
    font-size: 24px;
    letter-spacing: 3px;
    font-weight: bold;
}
.product p{
    text-align: center;
    font-size: 16px;
    line-height: 25px;
}
.product-content{
    width: 70%;
    margin: 0 auto;
    text-align: center;
}
.product-content ul{
    display: inline-block;
    padding-inline-start: 0;
}
.product-content ul li{
    display: inline-block;
    padding: 15px;
}
.product-content img{
    width: 160px;
    height: 160px;
}
.product-content ul li p {
    color: #494949;
    font-size: 16px;
}
.product-content .pro-text1{
    color: #1980CF;
    font-size: 20px;
    padding-top: 20px;
    margin-bottom: 0;
    letter-spacing: 2px;
    font-weight: 600;
}
.pro_jia{
    width: 50px;
    text-align: center;
    font-size: 64px;
    color: #006EB4;
    /* font-weight: bold; */
    position: relative;
    top: -115px;
    padding: 20px;
}
.mb_text{
    display: none;
}
.group .item img{
    width: 100px;
}

#form .text3 ul{
    width: 70%;
    margin: 20px auto 0;
    text-align: center;
    list-style: none;
    padding-inline-start: 0;
}
#form .text3 ul li{
    width: 17%;
    display: inline-block;
}
#form .text3 ul li img{
    width: 100%;
}
#form .text3 h4{
    color: #0065bb;
    font-weight: 600;
    font-size: 18px;
    margin: 20px 0 3px;
}
#form .text3 p{
    color: #231f20;
    font-size: 14px;
}
#form .text3 ul .jia{
    width: 80px;
    text-align: center;
    vertical-align: top;
    margin-top: 50px;
    font-size: 64px;
    color: #006EB4;
}


@media (max-width:1200px) {
    .lattice .float_group > div {
        width: 100%;
        height: unset;
        margin-top: 40px;
    }

    .lattice .float_group > div .flex_direction_vertically_center {
        /* padding: 0 40px; */
        width: 80%;
        margin: 0 auto;
    }

    .step .item{
        margin: 20px 26px 0;
    }
    .step .note {
        padding-right: 0;
    }

    .improve{
        background: url(../img/index/mb/1.png) no-repeat;
        background-size: 100%;
    }
    .improve .improve_img{
        width: 90%;
    }
    .improve p{
        width: 80%;
        margin: 0 auto;
    }
    #form .text3 ul{
        width: 90%;
    }
    #form .text3 ul li{
        width: 25%;
    }
    #form .text3 h4{
        font-size: 16px;
    }
    /* #form .text3 p{
        font-size: 12px;
    } */
    #form .text3 ul .jia{
        width: 30px;
        display: inline-block;
        font-size: 42px;
        margin-top: 14px;
    }
}

@media (max-width:768px) {
    .pc_text{
        display: none;
    }
    .lattice .float_group > div:nth-child(2){
        margin-top: 0px;
    }
    .text3 {
        /*margin-top: 40px;*/
    }
    .text3>.text3_div {
        display: inline-block !important;
        /* width: 49% !important; */
    }
    /* .text3>.jia_hid {
        display: none !important;
    } */
    .banner {
        padding-bottom: calc(1580/1080*100%);
    }

    .banner span {
        right: 10px;
        writing-mode: vertical-rl;
        -webkit-writing-mode: vertical-rl;
        text-orientation: upright;
    }

    .step .group {
        max-width: 300px;
        margin-left: auto;
        margin-right: auto;
    }
    .step .item{
        margin: 20px 10px 0;
    }
    .title_mobile {
        display: block;
    }
    .lattice .float_group > div .title {
        display: none;
    }
    
    .product p {
        width: 80%;
        margin: 0 auto;
        padding: 10px 0;
    }
    .product-content {
        width: 90%;
    }
    .product-content ul{
        width: 100%;
        padding-inline-start: 0;
    }
    .product-content ul li {
        width: 45%;
        padding: 5px;
    }
    .product-content img {
        width: 120px;
        height: 120px;
    }
    .product-content .pro-text1 {
        padding: 0 0;
        padding-top: 10px;
    }
    .product-content ul li p {
        padding: 0;
    }
    .pro_jia {
        font-size: 40px;
        position: relative;
        top: -90px;
        padding: 0;
    }
    .text3>.mb_jia{
        display: none !important;
    }
    .mb_text{
        display: block;
    }
    .group .item img{
        width: 80px;
    }
    

}