:root {
    --header-background: #161617;
    --main-color: #1472ff;
}


body {
    margin: 0;
    padding: 0;
    font-family: "微软雅黑", Arial, Helvetica, sans-serif;
}

::-webkit-scrollbar {
    width: 0px;
}

a {
    color: #000000;
    text-decoration: none;
}

header {
    background-color: #161617;
    position: fixed;
    top: 0px;
    width: 100%;
    z-index: 25;
}

.header {
    width: 80%;
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    flex-direction: row;
    justify-content: center;
}

.header_logo {
    height: 80px;
}

nav {
    width: 50%;
    margin: 0px 30px;
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
    align-items: center;
}

nav>a {
    margin: 0px 5px;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    color: #ffffff;
    transition: .5s;
    word-break: keep-all;

}

nav>a.active {
    background-color: var(--main-color);
}

nav>a:hover {
    color: #fff;
    background-color: var(--main-color);
}


main {
    width: 70%;
    max-width: 1600px;
    min-height: 100vh;
    margin: 0 auto;
}

.banner {
    margin-top: 80px;
    height: 600px;
    background-image: url(images/index_banner.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
    animation: banner_animate 2s ease;
}

.banner_new{
    margin-top: 80px;
    /* height: 600px; */
    /* animation: banner_animate 2s ease; */
}

@keyframes banner_animate {
    from {
        filter: blur(4px) grayscale(60%);
    }

    to {
        filter: blur(0px) grayscale(0%);
    }
}



section {
    color: #ffffff;
}




footer {
    width: 100%;
    padding: 20px 0px;
    background-color: #161617;
    color: #a0a0a0;
    text-align: center;
    display: flex;
    flex-direction: column;

}

footer>div {
    max-width: 1024px;
}

footer>div:nth-child(2) {
    margin: 0 auto;
    font-size: 14px;
}

footer a {
    color: #a0a0a0;
}

footer .tel {
    display: inline-block;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: solid 1px #f0f0f0;
    background: url("data:image/svg+xml,%3Csvg width='12' height='14' viewBox='0 0 12 14' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M7.591 9.23l.413-.225a4.1 4.1 0 0 1 .427-.202c.933-.373 1.757-.11 2.846 1.008.674.692.873 1.305.613 1.851-.193.409-.566.69-1.231 1.038-.044.023-.427.22-.524.272-1.547.838-5.093-1.08-7.643-4.358C-.064 5.328-.726 1.824.842.974L1.048.86 1.273.73c.792-.45 1.3-.63 1.902-.54.6.09 1.111.48 1.542 1.19.911 1.504.71 2.217-.462 2.865-.085.047-.384.206-.412.222-.286.156.2 1.202 1.33 2.656C6.32 8.594 7.279 9.4 7.592 9.228v.002z' fill='%23fff'/%3E%3C/svg%3E") no-repeat center;
    margin-right: 4px;
}

footer .mail {
    display: inline-block;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: solid 1px #f0f0f0;
    background: url("data:image/svg+xml,%3Csvg width='16' height='12' viewBox='0 0 16 12' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath clip-rule='evenodd' d='M13.667 11H2.333C1.597 11 1 10.44 1 9.752V2.248C1 1.558 1.597 1 2.333 1h11.334C14.403 1 15 1.559 15 2.248v7.504C15 10.44 14.403 11 13.667 11z' stroke='%23fff' stroke-width='2' stroke-linecap='round'/%3E%3Cpath d='M1 3l7 3.5L15 3' stroke='%23fff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat center;
    margin-right: 4px;
}

footer .flex_center {
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 4px 0px;
    font-weight: bold;
}

@media screen and (max-width : 800px) {
    .header {
        width: auto;
        padding: 0px 10px;
        justify-content: space-between;
        align-items: center;
    }

    .nav_button {
        display: block;
        height: 2px;
        width: 40px;
        border-top: 2px solid rgba(255, 255, 255, .8);
        border-bottom: 2px solid rgba(255, 255, 255, .8);
        background-color: rgba(255, 255, 255, .8);
        padding: 8px 0px;
        background-clip: content-box;
        cursor: pointer;
    }

    nav {
        display: none;
    }

    .nav_button_box {
        height: 80px;
        padding: 0px 10px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    #nav_toggle:checked~nav {
        position: fixed;
        top: 80px;
        left: 0px;
        right: 0px;
        width: 100%;
        height: 100vh;
        padding: 20px 0px;
        margin: 0px;
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        background-color: rgba(0, 0, 0, .8);
        user-select: none;
        z-index: 200;
    }

    #nav_toggle:checked~nav a {
        width: 100%;
        height: auto;
        padding: 12px 0px;
        margin: 4px 0px;
        justify-content: center;
        letter-spacing: 1px;
    }

    #nav_toggle:checked~.nav_button_box {
        background-color: rgba(255, 255, 255, .3);
    }


    .banner {
        height: 30vh;
    }
    

    main {
        width: 100%;
        margin: 0;

    }
}