img.lazy-loading,img[data-src],img[data-lazy],picture.lazy-loading,picture[data-src],picture[data-lazy]{background-color:#f5f5f5;min-height:50px;transition:opacity 0.3s ease-in-out;opacity:0.6;}img.lazy-loading::before,picture.lazy-loading::before{content:'';position:absolute;top:50%;left:50%;width:30px;height:30px;margin:-15px 0 0 -15px;border:3px solid rgba(0,0,0,0.1);border-top-color:var(--primary-color,#0d6efd);border-radius:50%;animation:lazy-spin 0.8s linear infinite;}@keyframes lazy-spin{to{transform:rotate(360deg);}}img.lazy-loaded,picture.lazy-loaded{opacity:1;background-color:transparent;animation:lazy-fade-in 0.3s ease-in;}@keyframes lazy-fade-in{from{opacity:0;}to{opacity:1;}}img.lazy-error,picture.lazy-error{background-color:#fff0f0;border:2px dashed #dc3545;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23dc3545'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm1 15h-2v-2h2v2zm0-4h-2V7h2v6z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center;background-size:48px 48px;opacity:0.7;}img.lazy-loading.progressive,picture.lazy-loading.progressive{filter:blur(10px);transform:scale(1.02);}img.lazy-loaded.progressive,picture.lazy-loaded.progressive{filter:blur(0);transform:scale(1);}img.lazy-loading.product-image,img.lazy-loading[alt*="产品"],picture.lazy-loading.product-image,picture.lazy-loading[alt*="产品"]{min-height:200px;background:linear-gradient(135deg,#f5f5f5 0%,#e0e0e0 100%);}img.lazy-loading.thumbnail,img.lazy-loading[alt*="缩略图"],picture.lazy-loading.thumbnail,picture.lazy-loading[alt*="缩略图"]{min-height:100px;background-color:#f0f0f0;}@media (prefers-reduced-motion:reduce){img.lazy-loading,img.lazy-loaded,picture.lazy-loading,picture.lazy-loaded{transition:none;animation:none;}}@media (prefers-color-scheme:dark){img.lazy-loading,img[data-src],img[data-lazy],picture.lazy-loading,picture[data-src],picture[data-lazy]{background-color:#2a2a2a;}img.lazy-error,picture.lazy-error{background-color:#3a1a1a;}}