html {
    scroll-behavior: smooth;
}
body {
    scrollbar-width: thin;
    scrollbar-color: #165DFF #F2F3F5;
}
body::-webkit-scrollbar {
    width: 8px;
}
body::-webkit-scrollbar-thumb {
    background-color: #165DFF;
    border-radius: 4px;
}
body::-webkit-scrollbar-track {
    background-color: #F2F3F5;
}
/* SEO优化 - 锚点跳转平滑且不被固定导航遮挡 */
:target {
    scroll-margin-top: 80px;
}
/* 简单的 Toast 提示样式 */
.toast {
    visibility: hidden;
    min-width: 250px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 8px;
    padding: 16px;
    position: fixed;
    z-index: 100;
    left: 50%;
    bottom: 30px;
    transform: translateX(-50%);
    font-size: 16px;
    opacity: 0;
    transition: opacity 0.3s, bottom 0.3s;
}
.toast.show {
    visibility: visible;
    opacity: 1;
    bottom: 50px;
}