:root{--primary-color:#0056b3;--secondary-color:#6c757d;--background-color:#f8f9fa;--text-color:#212529;--accent-color:#17a2b8}body{background-color:var(--background-color);color:var(--text-color);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;margin:0;padding:0}a{color:var(--primary-color);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.card{background:white;border-radius:8px;box-shadow:0 2px 4px rgba(0,0,0,.1);padding:1.5rem;margin-bottom:1rem}.btn{background-color:var(--primary-color);color:white;border:none;border-radius:4px;padding:.5rem 1rem;cursor:pointer}.btn:hover{background-color:#004494}.header{background-color:white;box-shadow:0 2px 4px rgba(0,0,0,.1);padding:1rem 0}.footer{background-color:#333;color:white;padding:2rem 0;margin-top:2rem}