.teaching-space-light-btn {
    width: auto;
    height: 32px;
    border: solid 1px #F5F5F5;
    background: #fff;
    box-sizing: border-box;
    color: #2B2B2B;
    text-align: left;
    line-height: 30px;
    border-radius: 100px;
    margin-right: 20px;
    font-size: 14px;
    float: left;
    padding-right: 10px;
}

.teaching-space-light-btn:hover {
    border-color: #D5DFFF;
    background: #fff;
    color: #4B76FB;
}

.teaching-space-light-btn i {
    float: left;
    width: 14px;
    height: 14px;

    background: url('../../images/courseportal/teaching-space-icon-light.png') no-repeat;
    background-size: 100%;
    margin-top: 9px;
    margin-left: 12px;
    margin-right: 4px;
}


.teaching-space-light-btn:hover i {
    background: url('../../images/courseportal/teaching-space-icon-lightHover.png') no-repeat;
    background-size: 100%;
}

/* 深色模式：Header 添加 darkBg 时自动生效 */
#Header.darkBg .teaching-space-light-btn {
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.7);
}

#Header.darkBg .teaching-space-light-btn:hover {
    border-color: rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

#Header.darkBg .teaching-space-light-btn i {
    background: url('../../images/courseportal/teaching-space-icon-dark.png') no-repeat;
    background-size: 100%;
}

#Header.darkBg .teaching-space-light-btn:hover i {
    background: url('../../images/courseportal/teaching-space-icon-darkHover.png') no-repeat;
    background-size: 100%;
}

/* 甘肃主题：蓝色背景 */
.Header.gansu-header {
    background-color: #0256ca;
    height: 60px;
}

/* 甘肃主题：Logo区域 */
.Header.gansu-header .Logo.fl {
    position: relative;
    width: 350px;
    height: 64px;
    margin-top: 0;
    margin-left: 20px;
}

.Header.gansu-header .Logo.fl img {
    position: absolute;
    top: 4px;
    left: 0;
    width: 90px;
    height: 52px;
}

.Header.gansu-header .header_logo_text_one {
    position: absolute;
    top: 9px;
    left: 104px;
    width: 237px;
    min-height: 34px;
    line-height: 22px;
    font-size: 20px;
    color: #ffffff;
    letter-spacing: 5px;
    font-weight: bold;
}

.Header.gansu-header .header_logo_text_two {
    position: absolute;
    top: 38px;
    left: 105px;
    width: 200px;
    min-height: 34px;
    line-height: 16px;
    font-size: 13px;
    color: #ffffff;
    font-weight: 400;
    letter-spacing: 0;
    white-space: nowrap;
}

/* 甘肃主题：登录按钮白色边框 */
.Header.gansu-header .loginBefore {
    border: 1px solid #ffffff;
}