/* =====================================================================
   「AI采购」导航下拉菜单（原生导航 .nav-list 版）  2026-10-06 接入
   把 AI智能选品 / AI批量报价 / AI拍照找商品 / AI语音助手 四项合并为
   一个「AI采购」入口。纯 CSS 交互（hover + focus-within），不依赖 JS。
   适用页面：使用原生 <ul class="nav-list"> 的商城页面。
   ===================================================================== */

.main-nav .nav-list li.nav-ai-menu {
    position: relative;
}

.main-nav .nav-list li.nav-ai-menu > a.nav-ai-trigger {
    display: flex;
    align-items: center;
    gap: 4px;
    height: 40px;
    color: #c6001b;
}

.main-nav .nav-list li.nav-ai-menu > a.nav-ai-trigger .nav-ai-star {
    font-size: 13px;
    line-height: 1;
}

.main-nav .nav-list li.nav-ai-menu > a.nav-ai-trigger .nav-ai-tag {
    padding: 0 4px;
    border-radius: 2px;
    background: #e60012;
    color: #fff;
    font-size: 10px;
    font-weight: normal;
    line-height: 14px;
}

.main-nav .nav-list li.nav-ai-menu > a.nav-ai-trigger .nav-ai-caret {
    width: 0;
    height: 0;
    margin-left: 2px;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    transition: transform .18s;
}

/* 悬停 / 键盘聚焦时整条高亮为品牌红 */
.main-nav .nav-list li.nav-ai-menu:hover > a.nav-ai-trigger,
.main-nav .nav-list li.nav-ai-menu:focus-within > a.nav-ai-trigger {
    color: #fff;
    background: #e60012;
}

.main-nav .nav-list li.nav-ai-menu:hover > a.nav-ai-trigger .nav-ai-tag,
.main-nav .nav-list li.nav-ai-menu:focus-within > a.nav-ai-trigger .nav-ai-tag {
    background: #fff;
    color: #e60012;
}

.main-nav .nav-list li.nav-ai-menu:hover .nav-ai-caret,
.main-nav .nav-list li.nav-ai-menu:focus-within .nav-ai-caret {
    transform: rotate(180deg);
}

/* ---------- 下拉面板 ---------- */
.main-nav .nav-list li .nav-ai-panel {
    display: none;
    position: absolute;
    top: 40px;
    left: 20px;
    z-index: 1000;
    min-width: 320px;
    padding: 8px;
    box-sizing: border-box;
    background: #fff;
    border: 1px solid #ecdfe2;
    border-top: 2px solid #e60012;
    box-shadow: 0 14px 34px rgba(23, 56, 78, .18);
}

.main-nav .nav-list li.nav-ai-menu:hover .nav-ai-panel,
.main-nav .nav-list li.nav-ai-menu:focus-within .nav-ai-panel {
    display: block;
}

/* 面板内链接需覆盖 .main-nav .nav-list li a 的 40px 块级导航样式 */
.main-nav .nav-list li.nav-ai-menu .nav-ai-panel a {
    display: block;
    width: 100%;
    height: auto;
    min-height: 0;
    padding: 9px 11px;
    box-sizing: border-box;
    border-radius: 6px;
    color: #26364b;
    font-size: 13px;
    font-weight: normal;
    line-height: 1.5;
    white-space: normal;
    text-align: left;
    text-decoration: none;
}

.main-nav .nav-list li.nav-ai-menu .nav-ai-panel a b {
    display: block;
    color: #26364b;
    font-size: 14px;
    font-weight: bold;
}

.main-nav .nav-list li.nav-ai-menu .nav-ai-panel a span {
    display: block;
    margin-top: 2px;
    color: #7e8390;
    font-size: 12px;
    font-weight: normal;
}

.main-nav .nav-list li.nav-ai-menu .nav-ai-panel a:hover,
.main-nav .nav-list li.nav-ai-menu .nav-ai-panel a:focus-visible {
    background: #fff5f6;
}

.main-nav .nav-list li.nav-ai-menu .nav-ai-panel a:hover b,
.main-nav .nav-list li.nav-ai-menu .nav-ai-panel a:focus-visible b {
    color: #c6001b;
}

.main-nav .nav-list li.nav-ai-menu .nav-ai-panel a:hover span {
    color: #96697a;
}

@media (max-width: 900px) {
    .main-nav .nav-list li .nav-ai-panel {
        display: none !important;
    }
}