:root{--bell-low:#d1d5db;--bell-low-hover:#9ca3af;--bell-medium:color-mix(in srgb,var(--accent) 55%,#fbbf24);--bell-medium-hover:color-mix(in srgb,var(--accent) 75%,#fbbf24);--bell-high:#22c55e;--bell-high-hover:#16a34a}body.dark-mode{--bell-low:#374151;--bell-low-hover:#4b5563;--bell-medium:color-mix(in srgb,var(--accent) 70%,#f59e0b);--bell-medium-hover:var(--accent);--bell-high:#16a34a;--bell-high-hover:#15803d}.bell-curve-wrap{width:100%}.bell-curve-svg{width:100%;height:auto;display:block;overflow:visible}.bell-bar-group{cursor:pointer}.bell-bar{transition:filter .15s}.bell-bar-group:hover .bell-bar{filter:brightness(.82)}.bell-curve-line{stroke:#6b7280;stroke-width:2;stroke-dasharray:none;pointer-events:none;opacity:.6}body.dark-mode .bell-curve-line{stroke:#9ca3af}.bell-baseline{stroke:#e5e7eb;stroke-width:1}body.dark-mode .bell-baseline{stroke:#374151}.bell-count-label{font-size:10px;fill:#6b7280;pointer-events:none}body.dark-mode .bell-count-label{fill:#9ca3af}.bell-axis-label{font-size:10px;fill:#9ca3af;pointer-events:none}body.dark-mode .bell-axis-label{fill:#6b7280}.bell-legend{gap:14px;margin-top:6px;flex-wrap:wrap}.bell-legend,.bell-legend-item{display:flex;align-items:center}.bell-legend-item{font-size:11px;font-weight:500;gap:5px;color:#6b7280}.bell-legend-item:before{content:"";display:inline-block;width:10px;height:10px;border-radius:2px;flex-shrink:0}.bell-legend-low:before{background:var(--bell-low)}.bell-legend-medium:before{background:var(--bell-medium)}.bell-legend-high:before{background:var(--bell-high)}.bell-legend-hint{margin-left:auto;font-size:11px;color:#9ca3af;font-style:italic}body.dark-mode .bell-legend-item{color:#9ca3af}body.dark-mode .bell-legend-hint{color:#6b7280}.na-card{background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:18px 20px 14px}.na-card--blank{display:flex;flex-direction:column}.na-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.na-card-title{font-size:.8125rem;font-weight:600;color:#6b7280;display:inline-flex;align-items:center;gap:2px}.na-card-link{font-size:.8rem;color:var(--accent);text-decoration:none}.na-card-link:hover{text-decoration:underline}.na-blank-body{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:24px 16px;text-align:center;flex:1 1}.na-blank-body--loading{padding:12px 0}.na-blank-icon{color:#d1d5db}.na-blank-text{font-size:.875rem;color:#6b7280;line-height:1.5;margin:0;max-width:240px}.na-blank-btn{display:inline-block;padding:8px 18px;background:var(--accent);color:#fff;border-radius:6px;font-size:.875rem;font-weight:600;text-decoration:none;transition:opacity .15s}.na-blank-btn:hover{opacity:.85}.na-skeleton{background:linear-gradient(90deg,#f3f4f6 25%,#e5e7eb 50%,#f3f4f6 75%);background-size:200% 100%;animation:na-shimmer 1.4s infinite;border-radius:6px}.na-skeleton--chart{width:100%;height:96px}@keyframes na-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.na-callout{font-size:.8125rem;color:#16a34a;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:6px;padding:7px 12px;margin-bottom:14px}.na-footer-note{font-size:.75rem;color:#9ca3af;margin:10px 0 0;text-align:right}.na-card-header-actions{display:flex;align-items:center;gap:12px}.na-rerun-btn{font-size:.75rem;padding:3px 10px;height:auto}.na-card--compact{padding:12px 16px 10px}.na-card--compact .na-card-header{margin-bottom:10px}.na-card--compact .na-callout{font-size:.75rem;padding:5px 10px;margin-bottom:10px}.na-card--compact .na-footer-note{font-size:.7rem;margin-top:6px}.na-card--compact .na-blank-body{padding:16px 12px;gap:8px}body.dark-mode .na-card{background:#1e1e1e;border-color:#333}body.dark-mode .na-card-title{color:#9ca3af}body.dark-mode .na-blank-icon{color:#4b5563}body.dark-mode .na-blank-text{color:#9ca3af}body.dark-mode .na-skeleton{background:linear-gradient(90deg,#2a2a2a 25%,#333 50%,#2a2a2a 75%);background-size:200% 100%}body.dark-mode .na-callout{background:#052e16;border-color:#166534;color:#4ade80}body.dark-mode .na-footer-note{color:#6b7280}