body {
    display: flex;
    margin: 0;
    height: 100vh;
    overflow: hidden; /* 禁止全局滚动 */
    position: relative; /* 为移动端按钮定位提供基准 */
}
#mobileMenuBtn {
    display: none; /* 默认隐藏 */
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 1000;
    padding: 8px 12px;
    background: #f4f7fd;
    border: 1px solid #d0ecff;
    border-radius: 4px;
}
#sidebar {
    width: 260px;
    border-right: 1px solid #d0ecff;
    padding: 18px;
    background-color: #f4f7fd;
    overflow-y: auto; /* 侧边栏独立滚动 */
    height: 100vh;
    transition: transform 0.3s ease; /* 添加过渡动画 */
}
#sidebar ul {
    list-style: none;
    padding: 0;
}
#sidebar ul li {
    margin: 8px 0;
}
#sidebar ul li a {
    text-decoration: none;
    color: #252525;
    display: block;
    padding: 6px;
    border-radius: 4px;
    transition: background-color 0.3s;
}
#sidebar ul li a:hover {
    background-color: #d0d7de;
}
#content {
    flex: 1;
    padding: 14px;
}
iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.pl2 {
    padding-left: 2rem
}

/* 移动端样式 */
@media (max-width: 768px) {
    #mobileMenuBtn {
        display: block; /* 显示菜单按钮 */
    }

    #sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 999;
        transform: translateX(-100%); /* 默认隐藏 */
        box-shadow: 2px 0 8px rgba(0,0,0,0.1);
    }

    #sidebar.active {
        transform: translateX(0); /* 显示侧边栏 */
    }

    #content {
        width: 100%; /* 占据全屏宽度 */
        padding-top: 50px; /* 给按钮留出空间 */
    }
}