html {
    padding-top: 78px;
    color: #666;
    font-weight: 400;
    font-family: 'Microsoft YaHei', Arial, sans-serif
}

body {
    background: #fff
}

:root {
    --header-height: 80px
}

div,
h1,
h2,
h3,
h4,
img,
p,
span,
ul {
    -webkit-box-sizing: border-box;
    box-sizing: border-box
}

a {
    color: inherit
}

button {
    cursor: pointer
}

.small-screen-item {
    display: none
}

div.layout {
    width: 1200px;
    min-width: 1200px;
    margin: 0 auto
}

h1,
h3 {
    font-size: 36px;
    color: #181f24;
    text-align: center
}

h3 {
    font-size: 30px;
    color: #333
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    padding: 0 !important;
    margin: 0 !important;
    background-color: #fff;
    border-bottom: 1px solid #d3d4d7;
    z-index: 100
}

.header .logo {
    display: inline-block;
    width: 160px;
    height: 50px;
    margin: 15px 0
}

.footer .footer-logo img,
.header .logo h1 {
    width: 100%;
    height: 100%
}

.header .logo a,
.header .nav ul li a {
    display: inline-block;
    width: 100%;
    height: 100%
}

.header .logo a {

}

.header .nav {
    overflow: hidden;
    font-size: 16px;
    float: right
}

.header .nav ul li {
    float: left;
    width: 96px;
    margin: 0 15px;
    line-height: 80px;
    text-align: center;
    cursor: pointer
}

.header .nav ul li a {
    text-decoration: none
}

.header .nav ul li.active:after {
    content: "";
    display: block;
    width: 100%;
    height: 4px;
    margin-top: -10px;
    background-color: #2677e3
}

.header .nav ul li:nth-child(2) {
    width: 160px
}



.global-shadow {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, .65);
    z-index: 9999
}

.global-shadow img {
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    max-width: 80%;
    max-height: 80%
}

.header-img {
    position: relative;
    min-width: 1200px
}

.header-img img {
    width: 100%
}

.header-img h3 {
    position: absolute;
    left: 0;
    width: 100%;
    text-align: center;
    top: 50%;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
    font-size: 45px;
    color: #fff;
    font-weight: 400
}

.header-img h3 span {
    letter-spacing: 3px
}

.location-msg {
    line-height: 5em;
    font-size: 15px;
    font-weight: 600;
    color: #333;
    letter-spacing: 2px;
    background: #f5f5f5
}

@media screen and (min-width:600px) {
    html {
        min-width: 1200px
    }
}

@media screen and (max-width:414px) {
    .big-screen-item {
        display: none
    }

    .header .nav-shadow.active,
    .small-screen-item {
        display: block
    }

    .small-screen-item.logo,
    .small-screen-item.nav-menu-btn {
        display: inline-block
    }

    .header .nav-menu-btn {
        display: inline-block;
        width: 30px;
        vertical-align: top;
        margin: 25px 25px 25px 0
    }

    .header .nav-menu-btn img {
        max-width: 100%
    }

    .header .logo {
        display: inline-block
    }

    .header .nav-shadow {
        display: none;
        top: var(--header-height);
        margin-top: -1px
    }

    .header .nav-shadow .mobile-nav {
        display: inline-block;
        margin-top: 25px;
        background-color: #fff
    }

    .header .nav-shadow .mobile-nav ul {
        width: 200px;
        padding: 10px 0;
        text-align: center;
        line-height: 3em
    }

    .header .nav-shadow .mobile-nav ul li {
        border-bottom: 1px solid #eee
    }

    .header .nav-shadow .mobile-nav ul li:nth-last-child(1) {
        border-bottom: 1px solid transparent
    }

    .header .nav-shadow .mobile-nav ul a {
        display: inline-block;
        width: 100%;
        height: 100%;
        text-decoration: none !important
    }

    .header-img,
    div.layout,
    html {
        min-width: 0;
        max-width: 100%
    }

    div.layout {
        padding: 0 15px
    }

 
    div.header-img h3 {
        font-size: 24px
    }

    .location-msg {
        line-height: 4em;
        font-size: 12px
    }
}