* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-weight: normal;
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
}

body {
    background-color: #f5f7fa;
    overflow-x: hidden;
    color: #333;
}

.scroll-container {
    height: 100vh;
    overflow-y: scroll;
    position: relative;
    scroll-behavior: smooth;
}

.img-fluid {
    max-width: 100%;
    height: auto;
}

.header-box {
    position: relative;
    height: 728px;
    width: 100%;
    background-image: url('https://images.zhongmin.cn/xhb/Index/images/bg1.png');
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 166px 20px 160px;
    z-index: 9999;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    box-sizing: border-box;
}

.anchor {
    display: flex;
    align-items: center;
}

.anchor-link {
    margin-left: 76px;
    font-weight: normal;
    font-size: 16px;
    color: #000;
    cursor: pointer;
    position: relative;
}

.anchor-link.is-active {
    color: #006CFF;
}

.anchor-link.is-active::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -12px;
    height: 4px;
    width: 70%;
    margin-left: -30%;
    background-color: #006CFF;
    border-radius: 2px;
}

.login-btn {
    width: 54px;
    height: 30px;
    margin-left: 55px;
    font-size: 14px;
    color: #FFF;
    background: url('https://images.zhongmin.cn/xhb/Index/images/login-btn.png');
    background-size: 100% 100%;
    background-repeat: no-repeat;
    text-align: center;
    line-height: 30px;
    border: none;
    cursor: pointer;
}

.out-login {
    position: absolute;
    left: 12%;
    bottom: 23%;
    width: 210px;
    min-width: 100px;
    height: 56px;
    color: #FFF;
    background: url('https://images.zhongmin.cn/xhb/Index/images/btn-bg.png');
    background-size: 100% 100%;
    background-repeat: no-repeat;
    text-align: center;
    line-height: 56px;
    font-size: 22px;
    cursor: pointer;
    z-index: 10;
}

.arrow {
    margin-left: 7%;
}

#part1 {
    position: relative;
    min-height: 728px;
    height: auto;
    width: 100%;
    padding-top: 75px;
    box-sizing: border-box;
    background-image: url('https://images.zhongmin.cn/xhb/Index/images/bg1.png');
    background-size: 100% 100%;
}

#part2 {
    position: relative;
    min-height: 868px;
    height: auto;
    width: 100%;
    padding-top: 75px;
    box-sizing: border-box;
    background-image: url('https://images.zhongmin.cn/xhb/Index/images/bg2.png');
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

#part3 {
    min-height: 924px;
    height: auto;
    width: 100%;
    padding-top: 104px;
    box-sizing: border-box;
    background-image: url('https://images.zhongmin.cn/xhb/Index/images/bg3.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

#part4 {
    padding-top: 92px;
    background: #fff;
}

.part-title {
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.part-title .title {
    margin-bottom: 25px;
    font-size: 46px;
    color: #000;
}

.en-title {
    font-size: 32px;
    color: #6E819F;
    line-height: 44px;
    opacity: 0.2;
}

.product-box {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 78px;
}

.product-item {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 468px;
    height: auto;
    width: 370px;
    box-sizing: border-box;
    background-image: url('https://images.zhongmin.cn/xhb/Index/images/bg2-bg.png');
    background-size: 100% 100%;
    background-repeat: no-repeat;
    border-radius: 16px;
    margin: 0 20px;
}

.product-name {
    font-size: 32px;
    color: #000;
    margin-top: 20px;
}

.product-en-name {
    margin: 23px auto 53px;
    font-size: 14px;
    color: #A1A9B6;
}

.product-item img {
    max-width: 180px;
    height: 160px;
}

.advantage-container {
    max-width: 1500px;
    margin: 0 auto;
    position: relative;
}

.advantage-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    grid-column-gap: 150px;
    grid-row-gap: 100px;
    height: 500px;
    margin-top: 50px;
    place-items: center;
}

.advantage-item {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    max-width: 610px;
    height: 120px;
    padding: 17px 16px;
    background: rgba(255, 255, 255, 0.85);
    box-shadow: 0px 12px 32px 0px rgba(178, 200, 223, 0.26);
    border-radius: 56px;
    border: 2px solid #FFF;
}

.position-top-left {
    justify-content: flex-end;
    grid-column: 1;
    grid-row: 1;
}

.position-top-right {
    grid-column: 2;
    grid-row: 1;
}

.position-bottom-left {
    justify-content: flex-end;
    grid-column: 1;
    grid-row: 2;
}

.position-bottom-right {
    grid-column: 2;
    grid-row: 2;
}

.title-box {
    text-align: left;
}
.right-txt{
    text-align: right;
    margin-right: 20px;
}
.left-txt{
    text-align: left;
    margin-left: 20px;
}
.advantage-item .title {
    margin-bottom: 12px;
    font-size: 24px;
    color: #000;
}

.advantage-item .subtit {
    font-size: 14px;
    color: #445063;
}

.advantage-item img {
    width: 70px;
    height: 70px;
}

.about-box {
    position: relative;
    display: flex;
    justify-content: flex-end;
    margin-top: 69px;
    padding-bottom: 104px;
    box-sizing: border-box;
}

.bg4-box {
    max-width: 1180px;
    width: 61%;
}

.bg4 {
    min-height: 540px;
    height: auto;
    width: 100%;
    box-sizing: border-box;
    background-image: url('https://images.zhongmin.cn/xhb/Index/images/bg4.png');
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

.company-title {
    position: relative;
    font-size: 28px;
    color: #000;
}

.company-title::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 0;
    width: 36px;
    height: 4px;
    background: #1181FF;
}

.introduce-box {
    position: absolute;
    right: 40%;
    background: #fff;
    max-width: 1016px;
    min-height: 417px;
    margin-left: 128px;
    padding: 80px 121px 82px 77px;
    box-sizing: border-box;
    opacity: 0.9;
    z-index: 10;
}

.introduce {
    margin-top: 39px;
    font-size: 16px;
    color: #151D29;
    line-height: 36px;
}

.footer {
    display: flex;
    justify-content: space-between;
    width: 100%;
    padding: 37px 183px;
    box-sizing: border-box;
    background: #171A26;
}

.footer p {
    font-size: 14px;
    color: #FFF;
    line-height: 29px;
}

@media (max-width: 1200px) {
    .product-item {
        width: 320px;
        min-height: 420px;
    }

    .anchor-link {
        margin-left: 60px;
        font-size: 15px;
    }

    .advantage-grid {
        height: 550px;
    }

    .advantage-item {
        max-width: 480px;
    }

    .introduce-box {
        max-width: 900px;
        padding: 70px 100px 70px 70px;
    }

    .footer {
        padding: 37px 120px;
    }
}

@media (max-width: 1100px) {
    .product-item {
        width: 290px;
        min-height: 400px;
        margin: 15px;
    }

    .anchor-link {
        margin-left: 50px;
        font-size: 14px;
    }

    .advantage-grid {
        height: 500px;
    }

    .advantage-item {
        max-width: 440px;
    }

    .introduce-box {
        max-width: 800px;
        padding: 60px 80px 60px 60px;
    }

    .out-login {
        width: 190px;
        height: 50px;
        font-size: 20px;
    }

    .footer {
        padding: 37px 100px;
    }
}

@media (max-width: 1000px) {
    .product-item {
        width: 260px;
        min-height: 380px;
    }

    .anchor-link {
        margin-left: 40px;
        font-size: 13px;
    }

    .advantage-grid {
        height: 460px;
    }

    .advantage-item {
        max-width: 400px;
    }

    .introduce-box {
        max-width: 750px;
        padding: 55px 75px 55px 55px;
    }

    .out-login {
        width: 180px;
        height: 48px;
        font-size: 19px;
    }

    .footer {
        padding: 37px 80px;
    }
}

@media (max-width: 950px) {
    .product-box {
        flex-direction: column;
        align-items: center;
    }

    .product-item {
        width: 100%;
        max-width: 500px;
        margin: 20px 0;
    }

    .advantage-grid {
        grid-template-columns: 1fr;
        grid-template-rows: repeat(4, auto);
        grid-gap: 20px;
        height: auto;
    }

    .advantage-item {
        max-width: 100%;
        height: auto;
        padding: 15px 20px;
    }

    .position-top-left,
    .position-top-right,
    .position-bottom-left,
    .position-bottom-right {
        grid-column: 1;
        justify-content: center;
    }

    .position-top-left {
        grid-row: 1;
    }

    .position-top-right {
        grid-row: 2;
    }

    .position-bottom-left {
        grid-row: 3;
    }

    .position-bottom-right {
        grid-row: 4;
    }

    .introduce-box {
        max-width: 700px;
        padding: 50px 70px 50px 50px;
    }

    .out-login {
        width: 170px;
        height: 46px;
        font-size: 18px;
    }

    .footer {
        padding: 37px 60px;
    }
}

@media (max-width: 850px) {
    .product-item {
        width: 220px;
        min-height: 340px;
    }

    .anchor-link {
        margin-left: 20px;
        font-size: 11px;
    }

    .advantage-grid {
        height: 380px;
    }

    .advantage-item {
        max-width: 350px;
    }

    .introduce-box {
        max-width: 650px;
        padding: 45px 65px 45px 45px;
    }

    .out-login {
        width: 160px;
        height: 44px;
        font-size: 17px;
    }

    /* 页脚调整 */
    .footer {
        padding: 37px 40px;
    }
}

@media (max-width: 750px) {
    .product-item {
        width: 200px;
        min-height: 320px;
    }

    .anchor-link {
        margin-left: 15px;
        font-size: 10px;
    }

    .advantage-grid {
        height: 350px;
    }

    .advantage-item {
        max-width: 320px;
    }

    .introduce-box {
        max-width: 600px;
        padding: 40px 60px 40px 40px;
    }

    .out-login {
        width: 150px;
        height: 42px;
        font-size: 16px;
    }

    .footer {
        padding: 37px 30px;
    }
}