*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:Segoe UI,system-ui,sans-serif;background:#0a0a0a;color:#f0f0f0;min-height:100vh}button{cursor:pointer;font-family:inherit}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:#111}::-webkit-scrollbar-thumb{background:#333;border-radius:2px}