*{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;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{background-color:#f5f5f5;color:#333}a{color:inherit;text-decoration:none}.container{max-width:100%;margin:0 auto;padding:1rem;width:100%}.card{background:#fff;border-radius:8px;padding:2rem;box-shadow:0 2px 4px rgba(0,0,0,.1);margin-bottom:2rem}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500;color:#555}.form-group input,.form-group select,.form-group textarea{width:100%;padding:.75rem;border:1px solid #ddd;border-radius:4px;font-size:1rem;font-family:inherit}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:#0070f3;box-shadow:0 0 0 3px rgba(0,112,243,.1)}.form-group textarea{resize:vertical;min-height:100px}.btn{padding:.75rem 1.5rem;font-size:1rem;font-weight:500;border:none;border-radius:4px;cursor:pointer;transition:background-color .2s}.btn-primary{background-color:#0070f3;color:#fff}.btn-primary:hover{background-color:#0051cc}.btn-primary:disabled{background-color:#ccc;cursor:not-allowed}.alert{padding:1rem;border-radius:4px;margin-bottom:1rem}.alert-success{background-color:#d4edda;color:#155724;border:1px solid #c3e6cb}.alert-error{background-color:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.nav{background:#fff;padding:1rem 2rem;box-shadow:0 2px 4px rgba(0,0,0,.1);margin-bottom:2rem}.nav ul{list-style:none;display:flex;gap:2rem}.nav a{color:#333;font-weight:500;transition:color .2s}.nav a:hover{color:#0070f3}.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:1.5rem;gap:1.5rem}@media (max-width:968px){.cards-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:640px){.cards-grid{grid-template-columns:1fr}}