*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:#333;background-color:#f5f5f5}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 1rem}.btn{display:inline-block;padding:.75rem 1.5rem;border:none;border-radius:4px;cursor:pointer;font-size:1rem;transition:all .3s ease}.btn-primary{background-color:#007bff;color:#fff}.btn-primary:hover{background-color:#0056b3}.card{background:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a;padding:1.5rem}