:root{--primary-color:#0070f3;--background-light:#ffffff;--background-dark:#1a1a1a;--text-light:#000000;--text-dark:#ffffff;--border-light:#ddd;--border-dark:#444}*{box-sizing:border-box;padding:0;margin:0}body,html{max-width:100vw;overflow-x:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif}body{background-color:var(--background-light);color:var(--text-light);transition:background-color .3s ease,color .3s ease}body.dark-mode{background-color:var(--background-dark);color:var(--text-dark)}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#888;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#666}body.dark-mode ::-webkit-scrollbar-thumb{background:#555}body.dark-mode ::-webkit-scrollbar-thumb:hover{background:#777}::selection{background:var(--primary-color);color:white}:focus{outline:2px solid var(--primary-color);outline-offset:2px}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.text-center{text-align:center}.mt-1{margin-top:.25rem}.mt-2{margin-top:.5rem}.mt-3{margin-top:1rem}.mt-4{margin-top:1.5rem}.mt-5{margin-top:2rem}.mb-1{margin-bottom:.25rem}.mb-2{margin-bottom:.5rem}.mb-3{margin-bottom:1rem}.mb-4{margin-bottom:1.5rem}.mb-5{margin-bottom:2rem}