@layer utilities {
            .content-auto {
                content-visibility: auto;
            }
            .text-shadow {
                text-shadow: 0 2px 4px rgba(0,0,0,0.1);
            }
            .gradient-bg {
                background: linear-gradient(135deg, #FF6B6B 0%, #FF4444 100%);
            }
            .card-hover {
                transition: all 0.3s ease;
            }
            .card-hover:hover {
                transform: translateY(-5px);
                box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            }
            .touch-target {
                min-height: 44px;
                min-width: 44px;
            }
            .qrcode-card {
                background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
            }
        }
		  img.lazy {
            opacity: 0;
            transition: opacity 0.3s ease-in-out;
        }
        img.lazy.loaded {
            opacity: 1;
        }
        
        /* 移动端底部导航样式 */
        .mobile-nav {
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        
        /* 内容底部留白，避免被底部导航遮挡 */
        .content-padding {
            padding-bottom: 80px;
        }
        
        @media (min-width: 768px) {
            .content-padding {
                padding-bottom: 20px;
            }
        }
        
        /* 二维码卡片悬停效果 */
        .qrcode-img-box {
            transition: transform 0.3s ease;
        }
        .qrcode-card:hover .qrcode-img-box {
            transform: scale(1.05);
        }