* {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html {
    font-size: 14px;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

html, body {
    margin: 0; /* 移除默认边距 */
}

.header {
    display: flex;
    position: relative;
    top: 0; /* 固定在底部 */
    width: 100%;
    height: 45px; /* 设置固定高度 */
    z-index: 100; /* 确保在内容之上 */
    align-items: center; /* 垂直居中可选 */
    opacity: 0.6;
}

    .header::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        opacity: 0.3; /* 透明度50% */
        z-index: -1;
    }

.header-text-center-left {
    display: flex;
    justify-content: flex-start;
    padding-left: 5px;
    font-weight: bold;
}

body {
    display: flex; /* 启用弹性布局 */
    flex-direction: column; /* 垂直排列子元素 */
    min-height: 100vh; /* 最小高度为视口高度 */
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

    body::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-image: url('/lib/image/bg.png');
        background-size: cover; /* 关键属性：保持比例填满 */
        background-position: center; /* 居中显示 */
        background-repeat: no-repeat;
        opacity: 0.8; /* 透明度50% */
        z-index: -1;
    }

.body-container {
    position: relative;
}

.full-width-container {
    width: 100%; /* 占据全部宽度 */
    padding: 0; /* 移除内边距 */
    margin: 0; /* 移除外边距 */
}

.footer {
    position: absolute;
    bottom: 0; /* 固定在底部 */
    width: 100%;
    height: 45px; /* 设置固定高度 */
    z-index: 100; /* 确保在内容之上 */
    color:#aaaaaa;
    font-size:0.8rem;
}