@media screen and (max-width: 1280px) {
    .t_bg {
        max-width: 100%;
        min-width: 0;
    }
    .top {
        width: 100%;
    }
    .top .mail a {
        margin: 0;
    }
    .top .mail span {
        width: 26%;
    }
    .top .top_r {
        width: 63%;
    }
    .head .logo {
        margin-left: 8px;
    }
    .linc {
        min-width: 0;
        height: 950px;
    }
    .linc .play-game .play-button {
        width: 240px;
        height: 90px;
        font-size: 30px;
        line-height: 97px;
    }
    .about-content {
        min-width: 0;
    }
    .about-content .sec-about {
        width: 90%;
    }
    .about-content .sec-about p {
        width: 90%;
        font-size: 17px;
    }
    .join-content {
        min-width: 0;
    }
    .join-content p {
        padding-left: 10px;
        padding-right: 10px;
    }
    .pwd-content {
        min-width: 0;
    }
    .f_nbg {
        min-width: 0;
    }
    .f_nav {
        /*width: 100%;*/
        padding: 20px;
        display: flex;
        justify-content: center;
    }
}

@media screen and (max-width: 772px) {
    .top .top_r span {
        margin: 0 5px 0 5px;
    }
}

@media screen and (max-width: 640px) {
    .t_bg {
        height: 90px;
    }
    .top .mail {
        width: 100%;
        position: relative;
        top: 45px;
    }
    .top .mail span {
        width: 80%;
        font-size: 14px;
    }
    .top .mail a {
        font-size: 14px;
    }
    .top .top_r {
        width: 100%;
        padding-right: 12px;
        justify-content: right;
    }
    .join-content .sec-join {
        width: 90%;
        height: 585px;
    }
    .join-content p:first-child {
        font-size: 30px;
    }
    .join-content p{
        line-height: 36px;
    }
    .pwd-content {
        height: 650px;
    }
    .pwd-content .sec-pwd {
        width: 90%;
    }
    .linc {
        height: 600px;
    }
    .linc .play-game .play-button {
        width: 200px;
        height: 76px;
        font-size: 21px;
        line-height: 70px;
    }
}

@media screen and (max-width: 430px) {
    .top .top_r span {
        margin: 0 6px 0 6px;
        font-size: 12px;
    }
    .about-content .sec-about p {
        font-size: 13px;
    }
    .join-content p:first-child {
        font-size: 25px;
    }
    .join-content p{
        line-height: 33px;
    }
    .join-content .sec-join form .submit-btn, .join-content .sec-join form .back-btn {
        width: 48%;
        margin: auto;
    }
    .pwd-content .sec-pwd form .submit-btn, .pwd-content .sec-pwd form .back-btn {
        width: 48%;
        margin: auto;
    }
    .linc {
        height: 430px;
    }
    .linc .play-game .play-button {
        width: 160px;
        height: 56px;
        font-size: 18px;
        line-height: 55px;
    }
}


/* nav-bar 菜单 */
@font-face {
    font-family: "responsivenav";
    src: url("../fonts/responsivenav.eot");
    src: url("../fonts/responsivenav.eot?#iefix") format("embedded-opentype"),
    url("../fonts/responsivenav.ttf") format("truetype"),
    url("../fonts/responsivenav.woff") format("woff"),
    url("../fonts/responsivenav.svg#responsivenav") format("svg");
    font-weight: normal;
    font-style: normal;
}

.nav-collapse,
.nav-collapse * {
    box-sizing: border-box;
}

.nav-collapse ul {
    margin: 0;
    padding: 0;
    width: 100%;
    display: block;
    list-style: none;
}

.nav-collapse,
.nav-collapse ul {
    margin: 0;
    padding: 0;
    list-style: none;
    width: 100%;
    float: none;
}

.nav-collapse li {
    float: left;
    width: 100%;
    display: block;
}

/* @media screen and (min-width: 40em) {
  .nav-collapse li {
    width: 25%;
  }
} */

.nav-collapse a {
    color: #fff;
    text-decoration: none;
    width: 100%;
    border-bottom: 1px solid white;
    padding: 0.7em 1em;
    float: left;
}

.nav-collapse .alt a {
    background: #555;
}

.nav-collapse {
    position: relative;
    max-height: none;
    display: block;
    overflow: hidden;
}

@media screen and (-webkit-min-device-pixel-ratio: 1.3),
screen and (min--moz-device-pixel-ratio: 1.3),
screen and (-o-min-device-pixel-ratio: 2 / 1),
screen and (min-device-pixel-ratio: 1.3),
screen and (min-resolution: 192dpi),
screen and (min-resolution: 2dppx) {
    .nav-header {
        display: block;
        background: #e1af28;
        width: 100%;
        float: left;
    }

    .nav-toggle {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
        text-decoration: none;
        text-indent: -999px;
        position: relative;
        overflow: hidden;
        width: 70px;
        height: 55px;
        float: right;
    }

    .nav-toggle.active::before {
        font-size: 24px;
        content: "x";
    }

    .nav-toggle:before {
        color: #000000;
        /* Edit this to change the icon color */
        font-family: "responsivenav", sans-serif;
        font-style: normal;
        font-weight: normal;
        font-variant: normal;
        font-size: 28px;
        text-transform: none;
        position: absolute;
        content: "≡";
        text-indent: 0;
        text-align: center;
        line-height: 55px;
        speak: none;
        width: 100%;
        top: 0;
        left: 0;
    }

    .nav-header .logo {
        position: relative;
        float: left;
        height: 54px;
        line-height: 80px;
        top: 0;
        left: 10px;
    }

    .nav-header .logo img {
        vertical-align: text-bottom;
        height: 44px;
        background-color: #1F1F1F;
        border-radius: 4px;
    }

    .head {
        height: 158px;
        position: relative;
    }

    .nav-collapse a {
        display: flex;
        align-items: center;
        height: 52px;
    }

    .about-content,
    .join-content,
    .pwd-content {
        overflow: hidden;
    }
}

@media screen and (min-width: 51.25em) {
    .nav-header {
        display: flex;
    }

    .nav-header .logo {
        float: left;
        height: 90px;
        line-height: 96px;
        z-index: 999;
        background: #e1af28
    }

    .nav-header .logo img {
        vertical-align: middle;
        height: 64px;
        background-color: #1F1F1F;
        border-radius: 4px;
        margin-left: 6px;
    }

    .head {
        height: 90px;
    }

    .nav-collapse li {
        float: none;
        display: inline-block;
        width: auto;
        height: 90px;
        margin-left: .4em;
        margin-right: .2em;
    }

    .nav-collapse a {
        _float: none;
        -webkit-font-smoothing: antialiased;
        margin: 0;
        /*padding: 1.96em .7em .5em;*/
        font-size: 1.1em;
        color: #37302a;
        border: 0;
        -webkit-transition: background .5s ease;
        -moz-transition: background .5s ease;
        -o-transition: background .5s ease;
        transition: background .5s ease;
        display: block;
        height: 90px;
    }

    .nav-collapse,
    .nav-collapse ul {
        text-align: center;
    }

    .nav-collapse {
        position: relative !important;
        max-height: none;
        background-color: #E1AF28;
    }

    .nav-toggle {
        display: none;
    }
}

.nav-collapse ul {
    margin: 0;
    padding: 0;
    width: 100%;
    display: block;
    list-style: none;
}

.js .nav-collapse {
    clip: rect(0 0 0 0);
    max-height: 0;
    position: absolute;
    display: block;
    overflow: hidden;
    zoom: 1;
}

.nav-collapse.opened {
    max-height: 9999px;
}

.nav-toggle {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

@media screen and (min-width: 51.25em) {
    .js .nav-collapse {
        position: relative;
    }

    .js .nav-collapse.closed {
        max-height: none;
    }

    .nav-toggle {
        display: none;
    }
}

