body {
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, Helvetica, sans-serif;
}

/* ============================================================
   Banner 轮播图（静态部分，动态高度在页面内联）
   ============================================================ */
.banner-swiper .swiper-slide { position: relative; }
.banner-swiper .swiper-slide > a { display: block; width: 100%; height: 100%; }
.banner-swiper .swiper-button-prev,
.banner-swiper .swiper-button-next { color: #fff; opacity: 0; transition: opacity 0.3s; }
.banner-swiper:hover .swiper-button-prev,
.banner-swiper:hover .swiper-button-next { opacity: 1; }
.banner-swiper .swiper-pagination-bullet { background: #fff; opacity: 1; width: 12px; height: 12px; }
.product-item { transition: opacity 0.3s ease; }