*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f5f5f5;color:#333}.container{max-width:800px;margin:0 auto;padding:20px}h1{text-align:center;margin-bottom:24px;color:#1a73e8}button{cursor:pointer}.btn{padding:8px 16px;border:none;border-radius:4px;font-size:14px}.btn-primary{background:#1a73e8;color:#fff}.btn-primary:hover{background:#1557b0}.btn-danger{background:#e53935;color:#fff}.btn-danger:hover{background:#c62828}.btn-outline{background:transparent;border:1px solid #ddd;color:#555}.btn-outline:hover{background:#eee}input,textarea{width:100%;padding:10px;border:1px solid #ddd;border-radius:4px;font-size:14px;margin-bottom:12px}input:focus,textarea:focus{outline:none;border-color:#1a73e8}textarea{resize:vertical;min-height:60px}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:4px;font-weight:500}.error{color:#e53935;font-size:13px;margin-bottom:8px}