:root{font-family:system-ui,sans-serif;color-scheme:dark}body{margin:0;background:#0e1116;color:#e6e6e6}.app{max-width:880px;margin:0 auto;padding:1.5rem}header{display:flex;align-items:center;justify-content:space-between;gap:1rem;border-bottom:1px solid #2a2f3a;padding-bottom:1rem}.connect{display:flex;gap:.5rem;align-items:center}.connected{color:#4ade80}label{display:block;margin:.5rem 0}input{background:#161b22;border:1px solid #2a2f3a;color:#e6e6e6;padding:.4rem;border-radius:6px;width:100%;box-sizing:border-box}button{background:#2563eb;color:#fff;border:none;padding:.5rem .9rem;border-radius:6px;cursor:pointer}button:disabled{opacity:.6;cursor:default}.tabs{display:flex;gap:.4rem;margin:1rem 0}.tabs button{background:#161b22}.tabs button.active{background:#2563eb}.form{display:grid;gap:.4rem;max-width:420px}.result{background:#161b22;border:1px solid #2a2f3a;padding:.8rem;border-radius:6px;overflow:auto;white-space:pre-wrap}.error{color:#f87171}.hint{color:#9ca3af;font-size:.9rem}