.matrix-input{display:inline-block}.matrix-input__grid{display:grid;gap:6px}.matrix-input__cell{width:64px;text-align:center;padding:8px 6px!important;font-size:14px;font-variant-numeric:tabular-nums}.matrix-input__title{font-size:13px;color:var(--text-dim);margin:0 0 8px}.size-ctl{display:inline-flex;align-items:center;gap:8px}.size-ctl__val{font-size:13px;color:var(--text-dim);min-width:44px;text-align:center}.size-ctl__btn{width:28px;height:28px;border:1px solid var(--border-strong);border-radius:7px;background:transparent;color:var(--text);font-size:15px;cursor:pointer;line-height:1}.size-ctl__btn:hover:not(:disabled){border-color:var(--accent)}.size-ctl__btn:disabled{opacity:.35;cursor:not-allowed}.matrix-pair{display:flex;gap:28px;flex-wrap:wrap;align-items:flex-start}.mx{display:inline-flex;align-items:center;padding:4px 10px;position:relative;margin:2px 4px}.mx:before,.mx:after{content:"";position:absolute;top:0;bottom:0;width:7px;border:2px solid var(--text-dim)}.mx:before{left:0;border-right:none;border-radius:6px 0 0 6px}.mx:after{right:0;border-left:none;border-radius:0 6px 6px 0}.mx__grid{display:grid;gap:4px 14px}.mx__cell{text-align:center;font-variant-numeric:tabular-nums;font-family:ui-monospace,Consolas,monospace;font-size:14px;padding:2px 0;white-space:nowrap}.mx__cell--sep{border-inline-start:1px solid var(--border-strong);padding-inline-start:14px}.steps{display:flex;flex-direction:column;gap:10px;margin-top:12px;counter-reset:step}.step{background:var(--bg-elev-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px 12px 46px;position:relative;overflow-x:auto}.step:before{counter-increment:step;content:counter(step);position:absolute;left:12px;top:12px;width:22px;height:22px;border-radius:50%;background:#6c8cff24;color:var(--accent);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}.step__text{font-size:14px;line-height:1.55;white-space:pre-wrap}.step__text code,.math-expr{font-family:ui-monospace,Consolas,monospace;font-size:13.5px}.step__matrix{margin-top:8px}.result-box{background:var(--green-soft);border:1px solid rgba(34,197,94,.35);border-radius:var(--radius-sm);padding:14px 16px;font-size:15px;line-height:1.6;overflow-x:auto}.result-box--warn{background:#eab3081a;border-color:#eab30859}.result-box b{font-family:ui-monospace,Consolas,monospace;font-weight:700}.math-row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end;margin-top:12px}.math-input-lg{font-family:ui-monospace,Consolas,monospace!important;font-size:16px!important;padding:12px 14px!important}.eq-list{display:flex;flex-direction:column;gap:8px;margin-top:12px}.eq-list__row{display:flex;gap:8px;align-items:center}.eq-list__row input{font-family:ui-monospace,Consolas,monospace}.eq-list__row input.is-bad{border-color:var(--red)}.math-error{background:var(--red-soft);border:1px solid rgba(239,68,68,.4);border-radius:var(--radius-sm);color:#fca5a5;padding:10px 14px;font-size:13.5px;margin-top:12px}.graph-wrap{position:relative;margin-top:14px}.graph-canvas{width:100%;height:auto;display:block;background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);cursor:grab;touch-action:none}.graph-canvas:active{cursor:grabbing}.graph-coords{position:absolute;right:10px;top:10px;background:#0e0f13cc;border:1px solid var(--border);border-radius:7px;color:var(--text-dim);font-size:12px;font-family:ui-monospace,Consolas,monospace;padding:4px 8px;pointer-events:none}.fn-list{display:flex;flex-direction:column;gap:8px;margin-top:12px}.fn-row{display:flex;gap:8px;align-items:center}.fn-row__swatch{width:14px;height:14px;border-radius:4px;flex:none}.fn-row input{font-family:ui-monospace,Consolas,monospace}.fn-row.is-bad input{border-color:var(--red)}.calc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px;margin-top:16px}.calc-card{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px}.calc-card__title{font-size:14.5px;font-weight:600;margin:0 0 10px}.calc-card .fields{margin-bottom:10px}.calc-card__out{margin-top:10px;font-size:14px;line-height:1.6;color:var(--text-dim);min-height:22px}.calc-card__out b{color:var(--green);font-size:16px}.calc-card__formula{margin-top:8px;font-family:ui-monospace,Consolas,monospace;font-size:12.5px;color:var(--text-faint)}.frac{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;margin:0 3px}.frac__n{padding:0 6px;border-bottom:1.5px solid var(--text);line-height:1.3}.frac__d{padding:0 6px;line-height:1.3}.val-table-wrap{margin-top:20px;padding:16px;background:var(--bg-elev-2);border:1px solid var(--border);border-radius:var(--radius)}.val-table-title{font-size:15px;font-weight:600;margin:0 0 4px;color:var(--text)}.val-table-desc{font-size:12.5px;color:var(--text-dim);margin:0 0 14px;line-height:1.4}.val-table-scroll{overflow-x:auto;margin-bottom:10px}.val-table{border-collapse:collapse;font-family:ui-monospace,Consolas,monospace;font-size:14px;min-width:100%}.val-table th{padding:8px 12px;color:var(--text-dim);font-weight:700;text-align:center;background:var(--bg-elev);border:1px solid var(--border);min-width:45px}.val-table td{border:1px solid var(--border);padding:2px;text-align:center;min-width:70px;background:var(--bg-elev-3)}.val-table__input{width:76px;background:transparent;border:none;text-align:center;color:var(--text);font-family:inherit;font-size:inherit;padding:6px;box-sizing:border-box}.val-table__input:focus{outline:2px solid var(--accent);outline-offset:-2px;border-radius:4px;background:var(--bg-elev)}.val-table__del-btn{background:transparent;border:none;color:var(--text-faint);cursor:pointer;font-size:12px;padding:4px 8px;width:100%}.val-table__del-btn:hover{color:var(--red);background:#ef44441a}.val-table-actions{display:flex;gap:10px;margin-top:10px}@media(pointer:coarse){.val-table__del-btn{min-height:44px}.size-ctl__btn{width:44px;height:44px}}@media(max-width:520px){.matrix-input__cell{width:52px}.mx__grid{gap:3px 10px}}.calc-formula{font-family:ui-monospace,Consolas,monospace;font-size:18px;padding:6px 0;display:flex;gap:8px;align-items:baseline;overflow-x:auto}.calc-formula__label{color:var(--text-dim);white-space:nowrap}.calc-at{color:var(--text-dim)}.graph3d-wrap{position:relative;touch-action:none}.graph3d-axis{position:absolute;font:12px ui-monospace,Consolas,monospace;color:var(--text-dim);pointer-events:none;transform:translate(-50%,-50%)}.graph3d-domain{flex-wrap:wrap;gap:10px;align-items:center}.graph3d-domain .val-table__input{max-width:70px}