#header {
    width: 1400px;
    margin: 0 auto;

}

#header div {
    padding: 15px 0;
}

#header img {
    width: 221.15px;
    height: 50px;
}

#swiper {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

#swiper {
    background: url('../images/top.png');
    background-size: 100% 100%;
    background-repeat: no-repeat;
    width: 100%;
    height: 810px;
}

.swiper_title {
    width: 1400px;
    font-family: Roboto Mono;
    font-size: 58px;
    font-weight: bold;
    line-height: 150%;
    text-transform: uppercase;
    letter-spacing: normal;
    color: #0F3F5A;






}

.swiper_title1 {
    /* Introducing the function of the Accu */
    font-family: Roboto Mono;
    font-variation-settings: "opsz"auto;
}

.swiper_title2 {
    /* LNP  */
    font-family: Roboto Mono;
    font-weight: 600;
    font-size: 58px;
    font-variation-settings: "opsz"auto;
}

.swiper_title3 {
    /* Transfection Kit */
    font-family: Roboto Mono;
    font-weight: 600;
    font-size: 58px;
    font-variation-settings: "opsz"auto;
}

.swiper_des {
    margin-top: 25px;
    width: 660px;
    font-family: Roboto Mono;
    font-size: 18px;
    font-weight: normal;
    line-height: 30px;
    letter-spacing: normal;
    color: #7E99A9;
}

.index1 {
    width: 1400px;
    margin: 90px auto 0 auto;
    
    display: flex;
    flex-wrap: nowrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px; /* space between image, bullets, paypal */
    
    background: linear-gradient(180deg, #FFFFFF 47%, rgba(255, 255, 255, 0) 86%);
    opacity: 1;
}

.index1 .left {
    flex: 0 0 30%; /* fixed ~30% width */
    max-width: 30%;
    margin-right: 0; /* remove old margin if needed */
}

.index1 .left img {
    width: 100%; /* fill container */
    height: auto;
}

.index1 .right {
    flex: 1 1 45%;
    min-width: 0;
}

.index1 ul li {
    width: 100%; /* make full width inside flex container */
    height: 91px;
    background: rgba(27, 121, 171, 0.04);
    border-radius: 10px;
    border: 1px solid #EEEEEE;
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.index1 ul li .index1_num {
    width: 48px;
    height: 52px;
    font-family: Source Han Sans, Source Han Sans;
    font-weight: 500;
    font-size: 36px;
    color: #3D3D3D;
    line-height: 52px;
    text-align: left;
    margin-left: 26px;
    margin-right: 19px;
}

.index1 ul li .index1_des {
    flex: 1; /* fill remaining space */
    font-family: Roboto Mono, Roboto Mono;
    font-weight: 400;
    font-size: 24px;
    color: #3D3D3D;
    line-height: 32px;
    text-align: left;
}

/* Add PayPal container style */
.index1 .paypal-box {
    flex: 0 0 200px; /* fixed width */
    max-width: 200px;
    margin-top: 20px;
}

.index2 {
    width: 1400px;
    margin: 0 auto;
    position: relative;
}

.index2 .left {
    position: relative;
    width: 474px;
    height: 557px;
    background-image: url('../images/bg1.png');
    background-size: 100% 100%;
    display: flex;
    justify-content: center;
    /* border-radius: 100px; */
    z-index: 2;
}

.index2leftdes {
    width: 432px;
    height: 404px;
    font-family: Roboto Mono, Roboto Mono;
    font-weight: 500;
    font-size: 50px;
    color: #FFFFFF;
    line-height: 66px;
    text-align: left;
    font-style: normal;
    text-transform: none;
    padding-top: 86px;
    text-justify: auto;
}

.index2 .right {
    width: 1002px;
    height: 510px;
    background: rgba(255, 255, 255, 0.53);
    border: 1px solid #25A3F1;
    position: absolute;
    right: 0;
    top: 50%;
    z-index: 1;
    transform: translateY(-50%);

}

.index2 .right {
    width: 1002px;
    padding: 50px 29px 50px 130px;
    height: 408px;
    font-family: Roboto Mono, Roboto Mono;
    font-weight: 400;
    font-size: 30px;
    color: #3D3D3D;
    line-height: 51px;
    text-align: left;
    font-style: normal;
    text-transform: none;
    border-radius: 20px;
}

.index3 {
    width: 1400px;
    margin: 0 auto;
    position: relative;
}

.index3 ul {
    display: flex;
    justify-content: space-between;
}

.index3 ul li {
    width: 337px;
    height: 410px;
    background: rgba(53, 109, 164, 0.04);
    border-radius: 10px 10px 10px 10px;
    border: 1px solid #038DAD;
    padding: 22px 26px;
    cursor: pointer;
}


.index3_title {
    text-align: center;
    font-family: Roboto Mono, Roboto Mono;
    font-weight: 400;
    font-size: 46px;
    color: #000000;
    line-height: 61px;
    margin-bottom: 100px;
}

.index3_num {
    width: 59px;
    height: 64px;
    font-family: Source Han Sans, Source Han Sans;
    font-weight: 500;
    font-size: 44px;
    color: #058DAD;
    line-height: 64px;
    text-align: left;
    font-style: normal;
    text-transform: none;
    position: relative;
}

.index3_num::before {
    position: absolute;
    bottom: 0;
    content: "";
    width: 59px;
    height: 4px;
    background-color: #058DAD;
}


.index3_box {
    width: 284px;
    height: 84px;
    font-family: Roboto Mono, Roboto Mono;
    font-weight: 500;
    font-size: 32px;
    color: #000000;
    line-height: 42px;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin: 30px 0 20px;
}

.index3des {
    width: 284px;
    height: 175px;
    font-family: Roboto Mono, Roboto Mono;
    font-weight: 400;
    font-size: 20px;
    color: #3D3D3D;
    line-height: 26px;
    text-align: left;
    font-style: normal;
    text-transform: none;
}

.index3 ul li.act:hover {
    background: linear-gradient(360deg, #5955FD 0%, #27D2EB 100%);
    box-shadow: 0px 28px 26px 0px rgba(82, 87, 139, 0.44);
    border: 1px solid #ffffff;
}

.index3 ul li.act:hover {
    color: #fff;
}

.index3 ul li.act:hover .index3_num::before {
    background-color: #fff;
}

.index3 ul li.act:hover .index3_num,
.index3 ul li.act:hover .index3_box,
.index3 ul li.act:hover .index3des,
.index3 ul li.act:hover .index3_box {
    color: #fff;
}


.index4 {
    width: 1400px;
    margin: 0 auto;
}

.index4 h2 {
    width: 1326px;
    height: 61px;
    font-family: Roboto Mono, Roboto Mono;
    font-weight: 500;
    font-size: 46px;
    color: #000000;
    line-height: 61px;
    text-align: left;
    font-style: normal;
    text-transform: none;
}

.index4 p {
    width: 1361px;
    font-family: Roboto Mono, Roboto Mono;
    font-weight: 400;
    font-size: 30px;
    color: #3D3D3D;
    line-height: 40px;
    text-align: justify;
    font-style: normal;
    text-transform: none;
}

.index4 h4 {

    width: 980px;
    font-family: Roboto Mono, Roboto Mono;
    font-weight: 500;
    font-size: 34px;
    color: #000000;
    line-height: 45px;
    text-align: left;
    font-style: normal;
    text-transform: none;
}

.index4 img {
    height: 340px;
    text-align: center;
}

#footer {
    width: 100%;
    height: 460px;
    background: linear-gradient(135deg, #5955FD 0%, #27D2EB 55%);
    border-radius: 0px 0px 0px 0px;
    text-align: center;
}


.footer_dex {

    font-family: Roboto Mono, Roboto Mono;
    font-weight: 400;
    font-size: 40px;
    color: #FFFFFF;
    line-height: 53px;
    text-align: center;
    font-style: normal;
    text-transform: none;
}

.scale-container {
  transform: scale(0.8);
  transform-origin: top left;
  width: 125%; /* helps layout fill the screen correctly */
}