/* 跳过导航链接 (无障碍) */
position: absolute;
top: -100px;
left: 15px;
z-index: 99999;
padding: 8px 16px;
background: #007bff;
color: #fff;
font-size: 14px;
border-radius: 0 0 4px 4px;
text-decoration: none;
transition: top 0.2s;
}
top: 0;
outline: 3px solid #0056b3;
}
