@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.animate-shimmer{animation:shimmer 2s linear infinite}.optimized-scroll{scroll-behavior:smooth;-webkit-overflow-scrolling:touch}.lazy-image{opacity:0;transition:opacity .3s ease-in-out}.lazy-image.loaded{opacity:1}.perf-grid{contain:layout style paint;will-change:transform}.tab-content{contain:layout}.hover-optimized{transform:translateZ(0);backface-visibility:hidden}.content-auto{content-visibility:auto;contain-intrinsic-size:300px}