.mtx-wrapper{--mtx-bg-primary:#0a0f1e;--mtx-bg-secondary:#111827;--mtx-bg-card:#1a2236;--mtx-bg-input:#0d1424;--mtx-border:#2a3a5c;--mtx-border-focus:#3b82f6;--mtx-text-primary:#e2e8f0;--mtx-text-secondary:#94a3b8;--mtx-text-muted:#64748b;--mtx-accent-blue:#3b82f6;--mtx-accent-cyan:#22d3ee;--mtx-accent-green:#10b981;--mtx-accent-amber:#f59e0b;--mtx-accent-red:#ef4444;--mtx-diff-bg:rgba(245, 158, 11, 0.14);--mtx-diff-border:rgba(245, 158, 11, 0.5);--mtx-line-height:21px;--mtx-font-mono:'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'SF Mono', 'Consolas', monospace;--mtx-font-sans:'Segoe UI', system-ui, -apple-system, sans-serif;--mtx-radius:8px;--mtx-radius-lg:12px;font-family:var(--mtx-font-sans);color:var(--mtx-text-primary);background:var(--mtx-bg-primary);line-height:1.6;max-width:1200px;margin:0 auto;padding:2rem 1rem 3rem}.mtx-wrapper *,.mtx-wrapper *::before,.mtx-wrapper *::after{box-sizing:border-box}.mtx-wrapper label::before,.mtx-wrapper label::after,.mtx-wrapper input::before,.mtx-wrapper input::after,.mtx-wrapper textarea::before,.mtx-wrapper textarea::after,.mtx-wrapper li::before,.mtx-wrapper li::after{content:none}.mtx-header{text-align:center;margin-bottom:1.5rem}.mtx-title{font-size:2rem;font-weight:700;color:var(--mtx-text-primary);margin:0 0 .5rem;letter-spacing:-.02em}.mtx-subtitle{color:var(--mtx-text-secondary);font-size:.95rem;margin:0}.mtx-toolbar{background:var(--mtx-bg-card);border:1px solid var(--mtx-border);border-radius:var(--mtx-radius-lg);padding:.85rem 1rem;margin-bottom:1rem}.mtx-toolbar-row{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem}.mtx-toolbar-row+.mtx-toolbar-row{margin-top:.65rem}.mtx-checkbox{display:flex;align-items:center;gap:.45rem;font-size:.88rem;color:var(--mtx-text-secondary);cursor:pointer;user-select:none}.mtx-wrapper .mtx-checkbox input[type="checkbox"]{width:18px;height:18px;accent-color:var(--mtx-accent-blue);cursor:pointer}.mtx-btn{padding:.6rem 1.3rem;background:var(--mtx-accent-blue);color:#fff;border:none;border-radius:6px;font-size:.9rem;font-weight:600;cursor:pointer;transition:background 0.2s,transform 0.1s;white-space:nowrap;font-family:inherit;min-height:44px}.mtx-btn:hover{background:#2563eb}.mtx-btn:active{transform:scale(.97)}.mtx-btn--secondary{background:#fff0;border:1px solid var(--mtx-border);color:var(--mtx-text-secondary)}.mtx-btn--secondary:hover{background:var(--mtx-bg-secondary);color:var(--mtx-text-primary)}.mtx-error-msg{color:var(--mtx-accent-red);font-size:.85rem;margin:.5rem 0 0;display:none}.mtx-error-msg.mtx-visible{display:block}.mtx-stats{display:none;flex-wrap:wrap;gap:.6rem;margin-left:auto}.mtx-stats.mtx-visible{display:flex}.mtx-stat{padding:.3rem .75rem;border-radius:999px;font-size:.78rem;font-weight:700;font-family:var(--mtx-font-mono);border:1px solid var(--mtx-border);background:var(--mtx-bg-secondary);color:var(--mtx-text-secondary)}.mtx-stat--diff{color:var(--mtx-accent-amber);border-color:var(--mtx-diff-border);background:var(--mtx-diff-bg)}.mtx-stat--sim{color:var(--mtx-accent-cyan)}.mtx-stat--nodiff{display:none;color:var(--mtx-accent-green)}.mtx-stats.mtx-nodiff .mtx-stat--nodiff{display:inline-block}.mtx-stats.mtx-nodiff .mtx-stat--diff{display:none}.mtx-icon-btn{background:#fff0;border:1px solid var(--mtx-border);color:var(--mtx-text-secondary);border-radius:6px;width:28px;height:28px;min-height:28px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;font-size:.8rem;line-height:1;font-family:inherit;transition:background 0.2s,color 0.2s;padding:0}.mtx-icon-btn:hover{background:var(--mtx-bg-primary);color:var(--mtx-text-primary)}.mtx-editor-scroll{overflow-x:auto;border:1px solid var(--mtx-border);border-radius:var(--mtx-radius-lg);background:var(--mtx-bg-card)}.mtx-editor{display:grid;grid-template-columns:1fr 4.2em 1fr;grid-template-rows:auto 1fr;min-width:640px}.mtx-pane-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem;padding:.5rem .75rem;background:var(--mtx-bg-secondary);border-bottom:1px solid var(--mtx-border);font-family:var(--mtx-font-sans);min-width:0}.mtx-arrow-head{background:var(--mtx-bg-secondary);border-bottom:1px solid var(--mtx-border);border-left:1px solid var(--mtx-border);border-right:1px solid var(--mtx-border)}.mtx-pane-head-label{font-size:.72rem;font-weight:700;color:var(--mtx-text-secondary);text-transform:uppercase;letter-spacing:.06em}.mtx-pane-head-actions{display:flex;align-items:center;gap:.5rem}.mtx-meta{font-size:.72rem;color:var(--mtx-text-muted);font-family:var(--mtx-font-mono);white-space:nowrap}.mtx-editor-body{position:relative;display:flex;height:420px;min-width:0}.mtx-gutter{flex:0 0 auto;width:3em;position:relative;overflow:hidden;background:var(--mtx-bg-secondary);border-right:1px solid var(--mtx-border)}.mtx-gutter-inner{position:absolute;top:0;left:0;right:0}.mtx-gutter-line{height:var(--mtx-line-height);line-height:var(--mtx-line-height);text-align:right;padding-right:.5em;font-size:.76rem;font-family:var(--mtx-font-mono);color:var(--mtx-text-muted);font-variant-numeric:tabular-nums;white-space:nowrap}.mtx-gutter-line--diff{color:var(--mtx-accent-amber);background:var(--mtx-diff-bg)}.mtx-wrapper .mtx-textarea{flex:1;min-width:0;height:100%;resize:none;white-space:pre;overflow:auto;padding:0 .6rem;background:var(--mtx-bg-input);border:none;color:var(--mtx-text-primary);font-family:var(--mtx-font-mono);font-size:.85rem;line-height:var(--mtx-line-height);outline:none}.mtx-wrapper .mtx-textarea::placeholder{color:var(--mtx-text-muted);white-space:pre-wrap}.mtx-editor-arrows{flex:0 0 4.2em;position:relative;overflow:hidden;background:var(--mtx-bg-secondary);border-left:1px solid var(--mtx-border);border-right:1px solid var(--mtx-border)}.mtx-arrow-inner{position:absolute;top:0;left:0;right:0}.mtx-arrow-group{position:absolute;left:0;right:0;display:flex;flex-direction:row;align-items:center;justify-content:center;gap:3px}.mtx-gutter-btn{background:var(--mtx-bg-card);border:1px solid var(--mtx-border);color:var(--mtx-accent-cyan);border-radius:4px;width:1.7em;height:18px;min-height:0;flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;font-size:.7rem;line-height:1;font-family:inherit;padding:0;transition:background 0.2s,color 0.2s}.mtx-gutter-btn:hover{background:var(--mtx-accent-blue);color:#fff}.mtx-toast{position:fixed;bottom:2rem;left:50%;transform:translateX(-50%) translateY(100px);background:var(--mtx-accent-green);color:#fff;padding:.6rem 1.2rem;border-radius:6px;font-size:.85rem;font-weight:600;opacity:0;transition:transform 0.3s,opacity 0.3s;z-index:10000;pointer-events:none}.mtx-toast.mtx-show{transform:translateX(-50%) translateY(0);opacity:1}.mtx-footer{text-align:center;margin-top:2rem;font-size:.8rem;color:var(--mtx-text-muted)}.mtx-footer a{color:var(--mtx-accent-cyan);text-decoration:none}.mtx-footer a:hover{text-decoration:underline}@media (max-width:768px){.mtx-wrapper{padding:1.5rem 1rem}}@media (max-width:640px){.mtx-wrapper{padding:1rem .75rem}.mtx-title{font-size:1.35rem}.mtx-toolbar-row .mtx-btn{flex:1 1 calc(50% - 0.3rem);text-align:center}.mtx-stats{margin-left:0;width:100%}.mtx-editor-body{height:320px}}