body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;line-height:1.6;color:#333}.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);transition:all .3s ease}.main-content{margin-top:60px;min-height:calc(100vh - 60px)}img{max-width:100%;height:auto;loading:lazy}.optimized-animation{will-change:transform,opacity;transform:translateZ(0)}.stable-layout{contain:layout style paint}.preload-hint{display:none}[data-user-color-scheme=dark]{color-scheme:dark}.smooth-scroll{scroll-behavior:smooth;-webkit-overflow-scrolling:touch}.simple-animation{transition:transform .2s ease,opacity .2s ease}