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strong{display:block;margin-top:3px;color:var(--text-primary);font-size:15px;font-variant-numeric:tabular-nums}.spread-history-note{color:var(--text-secondary);font-size:12px;line-height:1.5}.spread-history-chart{width:100%;height:auto;display:block}.spread-history-chart .chart-bg{fill:var(--bg-light)}.spread-history-chart .chart-grid{stroke:var(--border-color);stroke-width:1}.spread-history-chart .chart-zero{stroke:#8c8c8c;stroke-width:1;stroke-dasharray:4 4}.spread-history-chart .chart-line{fill:none;stroke:#1677ff;stroke-width:2}.spread-history-chart .chart-label{fill:var(--text-secondary);font-size:12px}.spread-history-chart .chart-hit-area{fill:transparent;pointer-events:all}.spread-history-chart .chart-hover{pointer-events:none}.spread-history-chart .chart-hover-line{stroke:#8c8c8c;stroke-width:1;stroke-dasharray:3 3}.spread-history-chart .chart-hover-dot,.spread-history-chart .chart-tooltip-marker{fill:#1677ff;stroke:#fff;stroke-width:2}.spread-history-chart .chart-tooltip-bg{fill:#fff;stroke:var(--border-color);filter:drop-shadow(0 4px 10px rgba(0,0,0,.18))}.spread-history-chart .chart-tooltip-title{fill:var(--text-primary);font-size:13px}.spread-history-chart .chart-tooltip-text{fill:var(--text-primary);font-size:12px}.spread-history-empty{min-height:180px;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);background:var(--bg-light);border:1px solid var(--border-color)}.spread-cell-with-history{display:inline-flex;align-items:center;gap:6px}.spread-history-inline-button{width:24px;height:24px}.spread-history-range-tabs{display:flex;justify-content:flex-end;gap:6px}.spread-history-range-tabs button{height:24px;padding:0 10px;border:1px solid var(--border-color);border-radius:4px;background:var(--bg-base);color:var(--text-secondary);font-size:12px;cursor:default}.spread-history-range-tabs button.active{border-color:#1677ff;background:#1677ff;color:#fff}@media(max-width:768px){.spread-history-stats{grid-template-columns:repeat(2,minmax(0,1fr))}}.card-spread-group{display:inline-flex;align-items:center;gap:4px;flex-shrink:0}.card-spread-group .ant-btn{width:24px;height:24px}