.calc-graph{width:100%;min-height:350px;border:1px solid var(--color-border,#e5e7eb);border-radius:8px;overflow:hidden;background:#fff}.calc-graph svg{display:block}.calc-graph .function-plot{font-family:var(--font-body,-apple-system,sans-serif)}.calc-graph .x.axis text,.calc-graph .y.axis text{font-size:11px;fill:var(--color-text-muted,#6b7280)}.calc-graph .x.axis line,.calc-graph .y.axis line,.calc-graph .x.axis path,.calc-graph .y.axis path{stroke:var(--color-border,#d1d5db)}.graph-legend{display:flex;flex-wrap:wrap;gap:1rem;margin-top:.75rem;font-size:.8125rem}.legend-item{display:flex;align-items:center;gap:.375rem}.legend-color{width:12px;height:3px;border-radius:1px}.legend-color.original{background:#2563eb}.legend-color.approximation{background:#dc2626}.legend-color.area{background:rgb(37 99 235 / .3)}