*{box-sizing:border-box;}
body, html {
    margin:0;
    padding:0;
    height:100%;
    font-family: "Microsoft YaHei", sans-serif;
    background: url("../images/bj.jpg") center center no-repeat;
    background-size: cover;
    position: relative;
}
button {
    width: 100%;
}
/* logo 左上角 */
.site-logo {
    position: fixed;
    top: 20px;
    left: -12px;
    display: flex;
    align-items: center;
    gap:8px;
    padding: 0 12px;
    z-index: 10;
}
.site-logo img {
    display: block;
    width: 213px;
    height: auto;
}
.site-logo .title {
    font-size: 46px;
    line-height: 46px;
    color: #fff;
    font-weight: 600;
    white-space: nowrap;
    letter-spacing: 0.1em;
    text-shadow: 0 0 8px rgba(74, 222, 128, 0.8);
}
/* 登录容器 居中 */
.login-wrapper {
    min-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.login-box {
    width: 100%;
    max-width: 376px;
    background: rgba(255,255,255,0.95);
    border-radius: 4px;
    padding: 0;
    box-shadow: 0 14px 40px -10px rgba(0,0,0,0.25);
    position: relative;
    overflow: hidden;
}
.login-header {
    padding: 24px 28px 12px;
    text-align: center;
    border-bottom: 1px solid #eee;
    color: #000;
    font-size: 24px;
}
.login-body {
    padding: 10px 15px 30px;
}

.login-input {
    width: 80%;
    margin: 10px auto;
    position: relative;
}

.login-input i {
    position: absolute;
    right: 10px;
    top: 6px;
    color: rgba(197, 192, 192, 0.8);
}

.valid {
    width: 49%;
}

.login-footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    padding: 12px 8px;
    text-align: center;
    font-size: 12px;
    color: #444;
    display: flex;
    justify-content: center;
    gap:10px;
    flex-wrap: wrap;
    align-items: center;
    background: #fff;
    border-top: 1px solid #e8e8e8;
    box-shadow: 0 -2px 6px rgba(0,0,0,0.05);
}
.login-footer a {
    color: #444;
    text-decoration: none;
}
.login-footer img {
    height: 16px;
    vertical-align: middle;
    margin-right:4px;
}
.captcha-img {
    cursor: pointer;
    border:1px solid #ddd;
    border-radius:4px;
}
.hide { display: none; }

@media (max-width: 768px){
    .login-box {
        margin: 40px 0;
    }
    .site-logo .title {
        display: none;
    }
    .login-header {
        padding: 20px 18px 8px;
    }
    .login-body {
        padding: 20px 18px 28px;
    }
}