html{height: 100%;}
body.signin {
    background:
        radial-gradient(circle at 1px 1px,
            rgba(28, 132, 198, 0.25) 1px,
            rgba(28, 132, 198, 0) 1.2px) 0 0 / 16px 16px repeat,
        linear-gradient(135deg, #F3FAFF 0%, #E6F3FF 55%, #DDEEFF 100%) !important;
    height: 100%;
    min-height: 100vh;
    color: #2f4050;
    position: relative;
    overflow: hidden;
}

/* 背景加一点“移动的小线条”，避免纯色太单调 */
body.signin::before {
    display: none;
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    opacity: 1;
    /* 小点点纹理：用圆点的 radial-gradient + 平铺实现 */
    background-image: radial-gradient(
        rgba(28, 132, 198, 0.33) 1px,
        rgba(28, 132, 198, 0) 1.2px
    );
    background-repeat: repeat;
    background-size: 16px 16px;
    background-position: 0 0;
    /* 不要动，避免晕；也避免 Chrome 因初始帧偏移导致不显示 */
    transform: translate3d(0, 0, 0);
    will-change: auto;
    animation: none !important;
}

/* 轻微雾化，让背景更“稳”，也更贴近主站质感 */
body.signin::after {
    display: none;
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(900px 500px at 18% 22%, rgba(255,255,255,0.35), rgba(255,255,255,0) 60%),
        radial-gradient(900px 520px at 78% 38%, rgba(28,132,198,0.06), rgba(28,132,198,0) 62%);
    opacity: 1;
}

/* 保留 keyframes 也没关系，但当前不启用（animation: none） */
@keyframes loginLinesMove {
    0% { transform: translate3d(0, 0, 0); }
    100% { transform: translate3d(0, 0, 0); }
}

.signinpanel {
    width: 750px;
    margin: 10% auto 0 auto;
    position: relative;
    z-index: 2;
}

.signinpanel .logopanel {
    float: none;
    width: auto;
    padding: 0;
    background: none;
}

.signinpanel .signin-info ul {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.signinpanel .form-control {
    display: block;
    margin-top: 15px;
}

.signinpanel .uname {
    background: #fff url(../img/user.png) no-repeat 95% center;color:#333;
}

.signinpanel .pword {
    background: #fff url(../img/locked.png) no-repeat 95% center;color:#333;
}

.signinpanel .btn {
    margin-top: 15px;
}

.signinpanel form {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(31, 45, 61, 0.10);
    -moz-box-shadow: 0 18px 45px rgba(31, 45, 61, 0.14);
    -webkit-box-shadow: 0 18px 45px rgba(31, 45, 61, 0.14);
    box-shadow: 0 18px 45px rgba(31, 45, 61, 0.14);
    -moz-border-radius: 3px;
    -webkit-border-radius: 3px;
    border-radius: 3px;
    padding: 30px;
}

.signinpanel .signin-info,
.signinpanel .signin-info a {
    color: rgba(47, 64, 80, 0.92);
}
.signinpanel .signin-info a:hover {
    color: #1c84c6;
}

.signup-footer{border-top: solid 1px rgba(31,45,61,.10);margin:20px 0;padding-top: 15px;color: rgba(47,64,80,.65);}

@media screen and (max-width: 768px) {
    .signinpanel,
    .signuppanel {
        margin: 0 auto;
        width: 420px!important;
        padding: 20px;
    }
    .signinpanel form {
        margin-top: 20px;
    }
    .signup-footer {
        margin-bottom: 10px;
    }
    .signuppanel .form-control {
        margin-bottom: 10px;
    }
    .signup-footer .pull-left,
    .signup-footer .pull-right {
        float: none !important;
        text-align: center;
    }
    .signinpanel .signin-info ul {
        display: none;
    }
}
@media screen and (max-width: 320px) {
    .signinpanel,
    .signuppanel {
        margin:0 20px;
        width:auto;
    }
}