*,:before,:after{box-sizing:border-box}:root{--color-bg:#fff;--color-surface:#f5f5f5;--color-border:#d0d0d0;--color-text:#1a1a1a;--color-muted:#666;--color-primary:#2563eb;--color-primary-hover:#1d4ed8;--color-secondary:#6b7280;--color-secondary-hover:#4b5563;--color-warn-bg:#fef9c3;--color-warn-border:#eab308;--color-error-bg:#fee2e2;--color-error-border:#ef4444;--radius:6px;--gap:1rem}body{background:var(--color-bg);color:var(--color-text);padding:var(--gap);margin:0;font-family:system-ui,-apple-system,sans-serif;line-height:1.5}#app{max-width:640px;margin:0 auto}h1{margin:0 0 var(--gap);font-size:1.5rem}h2{margin:0 0 .5rem;font-size:1.1rem}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}#notify{border-radius:var(--radius);margin-bottom:var(--gap);border:1px solid var(--color-warn-border);background:var(--color-warn-bg);color:var(--color-text);padding:.6rem 1rem;font-size:.9rem}#notify[data-level=error]{border-color:var(--color-error-border);background:var(--color-error-bg)}fieldset{border:1px solid var(--color-border);border-radius:var(--radius);margin:0 0 var(--gap);padding:.75rem 1rem}legend{padding:0 .25rem;font-size:.9rem;font-weight:600}fieldset label{cursor:pointer;align-items:center;gap:.5rem;padding:.25rem 0;display:flex}fieldset input[type=checkbox]{cursor:pointer;width:1rem;height:1rem;accent-color:var(--color-primary)}.symbol-grid{flex-wrap:wrap;gap:.4rem;margin-top:.5rem;display:flex}.symbol-label{background:var(--color-surface);border:1px solid var(--color-border);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:4px;align-items:center;gap:.25rem;padding:.2rem .4rem;font-family:monospace;font-size:.95rem;display:inline-flex}.symbol-label input[type=checkbox]{accent-color:var(--color-primary)}.preset-group{flex-wrap:wrap;gap:.4rem;margin-bottom:.75rem;display:flex}.preset-group button{border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);color:var(--color-text);cursor:pointer;min-width:2.5rem;padding:.35rem .85rem;font-size:.9rem;transition:background .15s,border-color .15s}.preset-group button:hover{background:#e5e7eb}.preset-group button.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}fieldset label input[type=number]{border:1px solid var(--color-border);border-radius:var(--radius);text-align:right;width:5rem;padding:.3rem .5rem;font-size:1rem}.action-buttons{margin-bottom:var(--gap);flex-wrap:wrap;gap:.75rem;display:flex}button.btn-primary,button.btn-secondary{border-radius:var(--radius);cursor:pointer;border:none;min-height:2.5rem;padding:.6rem 1.4rem;font-size:1rem;transition:background .15s}button.btn-primary{background:var(--color-primary);color:#fff}button.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}button.btn-primary:disabled{opacity:.6;cursor:not-allowed}button.btn-secondary{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border)}button.btn-secondary:hover{background:#e5e7eb}#results-area{margin-top:var(--gap)}.results-list{flex-direction:column;gap:.4rem;margin-bottom:.75rem;display:flex}.result-item{border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);width:100%;color:var(--color-text);cursor:text;padding:.5rem .75rem;font-family:monospace;font-size:.95rem}.result-item:focus{outline:2px solid var(--color-primary);outline-offset:1px}@media (max-width:480px){body{padding:.75rem}h1{font-size:1.25rem}.action-buttons{flex-direction:column}button.btn-primary,button.btn-secondary{width:100%}fieldset label input[type=number]{width:4.5rem}}