/* 图标字体 - 使用 Unicode 符号模拟 */
.icon-menu::before { content: "☰"; }
.icon-search::before { content: "🔍"; }
.icon-user::before { content: "👤"; }
.icon-home::before { content: "🏠"; }
.icon-book::before { content: "📖"; }
.icon-category::before { content: "📋"; }
.icon-star::before { content: "⭐"; }
.icon-feedback::before { content: "💬"; }

/* 图标基础样式 */
[class^="icon-"], [class*=" icon-"] {
    font-style: normal;
    font-weight: normal;
    speak: none;
    display: inline-block;
    text-decoration: inherit;
    width: 1em;
    text-align: center;
    font-variant: normal;
    text-transform: none;
    line-height: 1em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}