/* 本地图标（Material Symbols 内联 SVG data-URI，完全离线，不依赖 Google Fonts）
   用法：<span class="mui-icon mui-icon-desktop-windows"></span> */
.mui-icon {
    display: inline-block;
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
}
.mui-icon-desktop-windows {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' viewBox='0 0 24 24' width='24' fill='%23ffffff'%3E%3Cpath d='M21 2H3c-1.1 0-2 .9-2 2v12c0 1.1.9 2 2 2h7v2H8v2h8v-2h-2v-2h7c1.1 0 2-.9 2-2V4c0-1.1-.9-2-2-2zm0 14H3V4h18v12z'/%3E%3C/svg%3E");
}
.mui-icon-laptop-windows {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' viewBox='0 0 24 24' width='24' fill='%238c8c8c'%3E%3Cpath d='M20 18c1.1 0 2-.9 2-2V6c0-1.1-.9-2-2-2H4c-1.1 0-2 .9-2 2v10c0 1.1.9 2 2 2H0v2h24v-2h-4zM4 6h16v10H4V6z'/%3E%3C/svg%3E");
}
.mui-icon-check,
/* 兼容：页面中遗留的 material-symbols-outlined“check”图标统一映射为本地对勾 */
.material-symbols-outlined {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' viewBox='0 0 24 24' width='24' fill='%238c3c3c'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    width: 1.25rem;
    height: 1.25rem;
    display: inline-block;
    flex-shrink: 0;
    font-size: 0 !important;
    overflow: hidden;
}