body{margin:0;padding:0;background-color:#111;color:#eee;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;height:100vh;display:flex;justify-content:center;align-items:center;overflow:hidden}#launcher{background:#222;padding:2rem;border-radius:12px;box-shadow:0 10px 25px #00000080;text-align:center;width:300px}h1{margin-top:0;font-size:1.5rem;color:#fff}.control-group{margin-bottom:1.5rem;text-align:left}label{display:block;margin-bottom:.5rem;font-size:.9rem;color:#aaa}select{width:100%;padding:.5rem;background:#333;border:1px solid #444;color:#fff;border-radius:4px;font-size:1rem}.checkbox-group{display:flex;align-items:center;gap:.5rem}.checkbox-group input{width:18px;height:18px;cursor:pointer}.checkbox-group label{margin-bottom:0;cursor:pointer}button{width:100%;padding:.75rem;background:#4f46e5;color:#fff;border:none;border-radius:6px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:background .2s}button:hover{background:#4338ca}