*,:after,:before{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{overflow-x:hidden;-webkit-font-smoothing:antialiased;background:linear-gradient(135deg,#0f172a,#1a0f2e);min-height:100vh}:focus-visible{outline:2px solid #00c2ff;outline-offset:4px}::selection{background:rgba(0,194,255,.3);color:#f1f5f9}