* {
    margin: 0 0;
    padding: 0 0;
    list-style-type: none;
    text-decoration: none;
    box-sizing: border-box;
    outline: none;
    transition: all .3s;
}

html {
    width: 100%;
    height: 100%;
}


body {
    width: 100%;
    height: 100%;
    font-family: 'tahoma', 'arial', 'Hiragino Sans GB', 'Microsoft YaHei', '\5b8b\4f53', sans-serif;
    font-size: 16px;
    transition: all 0s;
}

input,
button {
    font-size: 15px;
    font-family: 'tahoma', 'arial', 'Hiragino Sans GB', 'Microsoft YaHei', '\5b8b\4f53', sans-serif;
}

img {
    display: block;
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 100%;
    image-rendering: -webkit-optimize-contrast;
}


input::-webkit-input-placeholder,
textarea::-webkit-input-placeholder {
    color: rgba(0, 0, 0, .3);
}

@font-face {
    font-family: ysbth;
    src: url('../font/cpoc.ttf');
}


p,
ol,
ul,
li,
dl,
h1,
h3,
h4,
h5,
h6,
label,
select,
input {
    margin-top: 0;
    margin-bottom: 0;
}

a {
    color: #616468;
}

a:hover {
    color: #ff9500;
    text-decoration: none;
}


button:hover {
    cursor: pointer;
    opacity: .7;
}

button:active {
    opacity: .5;
}


.icon {
    display: inline-block;
    width: 18px;
    height: 18px;
}

.qr {
    background: url(../images/qr.png) no-repeat center;
    background-size: contain;
}

.cpoc {
    background: url(../images/cpoc.png) no-repeat center;
    background-size: contain;
}

.exam {
    background: url(../images/exam.png) no-repeat center;
    background-size: contain;
}

.tip {
    background: url(../images/tips.png) no-repeat center;
    background-size: contain;
}

.btn-line {
    padding: 3px 15px;
    border: 2px solid #fff;
    border-radius: 100px;
    color: #fff;
    background-color: transparent;
}

.btn-line:hover {
    opacity: 1;
    color: #fff;
    border: 2px solid #16a085;
    background-color: #16a085;
    transition: all .3s;
}

.index-wrap {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.top-nav-wrap {
    position: fixed;
    top: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
    width: 100%;
}

.top-nav-wrap>p {
    padding: 2px 15px;
    border: 2px solid #83b4aa;
    border-radius: 100px;
    color: #fff;
    background-color: #83b4aa;
}

.qr-btns-wrap {
    display: flex;
}

.qr-btns-wrap button {
    display: flex;
    align-items: center;
    margin: 0 20px;
}

.qr-btns-wrap button i {
    margin-left: 6px;
}

.qr-btns-wrap>img {
    position: absolute;
    z-index: 99;
    margin-top: 40px;
    width: 100px;
    height: 100px;
    max-width: inherit;
    max-height: inherit;
    border: 5px solid #fff;
}

.img-cpoc {
    display: none;
    margin-left: 40px;
}


.qr-btns-wrap button:hover+.img-cpoc,
.img-cpoc:hover {
    display: block;
}

.banner-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 61%;
    background: url(../images/background.jpg) no-repeat center;
    background-size: cover;
}

.banner-wrap h2 {
    text-align: center;
}

.banner-wrap h2 {
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: 0;
    font-family: ysbth;
    font-size: 80px;
    color: #fff;
}

.bigbtns-wrap {
    position: relative;
    z-index: 99;
    display: flex;
    justify-content: center;
    margin: -80px auto 0 auto;
    width: 38%;
    height: 120px;
}

.bigbtn-box {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    border: none;
    background-color: rgba(22, 160, 133, .9);
    cursor: pointer;
}

.bigbtn-box i {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 56px;
    color: #fff;
    font-size: 66px;
}

.bigbtn-box p {
    position: absolute;
    padding-top: 150px;
    color: rgba(26, 31, 36, .6);
}

.bigbtn-box:hover {
    opacity: 1;
    background-color: #f39c12;
}

.bigbtn-box:hover p {
    color: #f39c12;
}

footer {
    position: fixed;
    bottom: 40px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    width: 100%;
    height: 30%;
    font-size: 13px;
    color: rgba(26, 31, 36, .4);
    background: url(../images/footer.png) no-repeat center bottom;
}

@media screen and (min-width: 1921px) {
    .banner-wrap h2 {
        font-size: 100px;
    }

    .bigbtns-wrap {
        margin: -80px auto 0 auto;
        width: 36%;
        height: 130px;
    }

    .bigbtn-box p {
        padding-top: 160px;
    }
}

@media screen and (min-width: 1440px) and (max-width: 1919px) {
    .bigbtns-wrap {
        margin: -70px auto 0 auto;
        width: 42%;
        height: 110px;
    }

    .bigbtn-box p {
        padding-top: 140px;
    }
}

@media screen and (min-width: 1440px) and (max-width: 1599px) {
    .top-nav-wrap {
        top: 20px;
        padding: 0 20px;
    }

    .banner-wrap h2 {
        font-size: 70px;
    }

    footer {
        bottom: 20px;
        font-size: 12px;
        background-size: 520px auto;
    }
}

@media screen and (min-width: 1366px) and (max-width: 1439px) {
    .bigbtns-wrap {
        margin: -70px auto 0 auto;
        width: 45%;
        height: 110px;
    }

    .bigbtn-box p {
        padding-top: 140px;
    }

    .top-nav-wrap {
        top: 20px;
        padding: 0 20px;
    }

    .banner-wrap h2 {
        font-size: 66px;
    }

    footer {
        bottom: 20px;
        font-size: 12px;
        background-size: 520px auto;
    }
}

@media screen and (max-width: 1365px) {
    .bigbtns-wrap {
        margin: -70px auto 0 auto;
        width: 50%;
        height: 110px;
    }

    .bigbtn-box p {
        padding-top: 140px;
    }

    .top-nav-wrap {
        top: 20px;
        padding: 0 20px;
    }

    .banner-wrap h2 {
        font-size: 66px;
    }

    footer {
        bottom: 20px;
        font-size: 12px;
        background-size: 520px auto;
    }
}