```json
{
"summary": "载荷与生产效率统计仪表盘（新增装载量趋势图），白底企业级设计，5项核心指标卡片，上行全宽利用率与吨公里双Y轴折线趋势图，下行双列（装载与超载分布柱状图+装载量趋势折线图），矿区→车型→车辆三级筛选，横轴按日/月/年切换，CSV导出与打印。",
"widget": {
"type": "full-html",
"html": "<!DOCTYPE html>\n<html lang=\"zh-CN\">\n<head>\n <meta charset=\"UTF-8\">\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n <title>载荷与生产效率数据统计</title>\n <link rel=\"preconnect\" href=\"https://fonts.googleapis.com\">\n <link rel=\"preconnect\" href=\"https://fonts.gstatic.com\" crossorigin>\n <link href=\"https://fonts.googleapis.com/css2?family=DM+Sans:opsz,wght@9..40,400;9…\" rel=\"stylesheet\">\n <link rel=\"stylesheet\" href=\"https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.c…\">\n <style>\n :root {\n --bg-page: #f5f6f8;\n --bg-panel: #fdfdfd;\n --bg-card: #ffffff;\n --bg-elevated: #fafbfc;\n --bg-stripe: #f8f9fb;\n --border: #e5e8ed;\n --border-light: #eff1f5;\n --border-active: #c9ced7;\n --text-primary: #0f172a;\n --text-secondary: #475569;\n --text-muted: #94a3b8;\n --accent-teal: #0d9488;\n --accent-blue: #0e7bb5;\n --accent-red: #e8590c;\n --accent-amber: #d4891a;\n --accent-purple: #7c3aed;\n --accent-green: #16a34a;\n --radius-sm: 4px;\n --radius: 8px;\n --radius-md: 10px;\n --radius-lg: 14px;\n --radius-xl: 18px;\n --shadow-xs: 0 1px 2px rgba(0,0,0,0.03);\n --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);\n --shadow-card: 0 2px 8px rgba(0,0,0,0.04), 0 0 0 1px rgba(0,0,0,0.02);\n --shadow-elevated: 0 8px 28px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.03);\n --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);\n --font-display: 'DM Sans', 'Noto Sans SC', sans-serif;\n --font-body: 'Noto Sans SC', 'DM Sans', sans-serif;\n }\n * { box-sizing: border-box; margin: 0; padding: 0; }\n body {\n background: var(--bg-page);\n color: var(--text-primary);\n font-family: var(--font-body);\n min-height: 100vh;\n display: flex;\n align-items: center;\n justify-content: center;\n padding: 10px;\n background-image:\n radial-gradient(ellipse at 15% 10%, rgba(13,148,136,0.03) 0%, transparent 55%),\n radial-gradient(ellipse at 85% 90%, rgba(14,123,181,0.025) 0%, transparent 55%);\n }\n .dashboard {\n width: 100%;\n max-width: 1600px;\n aspect-ratio: 16 / 9;\n max-height: calc(100vh - 20px);\n display: flex;\n flex-direction: column;\n gap: 5px;\n background: var(--bg-panel);\n border-radius: var(--radius-xl);\n padding: 10px 14px;\n box-shadow: var(--shadow-elevated);\n border: 1px solid var(--border);\n position: relative;\n overflow: hidden;\n }\n .dashboard::before {\n content: '';\n position: absolute;\n inset: 0;\n pointer-events: none;\n background:\n linear-gradient(180deg, rgba(13,148,136,0.012) 0%, transparent 25%),\n linear-gradient(0deg, rgba(14,123,181,0.008) 0%, transparent 35%);\n border-radius: var(--radius-xl);\n z-index: 0;\n }\n .dashboard > * { position: relative; z-index: 1; }\n\n .header { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-shrink: 0; padding-bottom: 3px; border-bottom: 1px solid var(--border-light); }\n .header-left { display: flex; align-items: center; gap: 7px; }\n .logo-mark { width: 28px; 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font-family: var(--font-display); font-size: 9px; font-weight: 600; letter-spacing: 0.01em; transition: all var(--transition-base); white-space: nowrap; position: relative; }\n .btn-group button:not(:last-child)::after { content: ''; position: absolute; right: 0; top: 14%; height: 72%; width: 1px; background: var(--border); }\n .btn-group button:hover { color: var(--text-primary); background: var(--bg-elevated); }\n .btn-group button.active { color: #fff; background: #0d9488; box-shadow: 0 0 8px rgba(13,148,136,0.2); border-radius: 0; }\n .btn-group button.active::after { display: none; }\n .btn-group button:first-child.active { border-radius: var(--radius) 0 0 var(--radius); }\n .btn-group button:last-child.active { border-radius: 0 var(--radius) var(--radius) 0; }\n\n select, .date-input { background: var(--bg-card); border: 1px solid var(--border); color: var(--text-primary); padding: 3px 5px; border-radius: var(--radius); font-family: var(--font-display); font-size: 9px; outline: 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linear-gradient(135deg, #0d9488, #0f766e); border: none; color: #fff; padding: 3px 10px; border-radius: var(--radius); cursor: pointer; font-family: var(--font-display); font-size: 9px; font-weight: 600; letter-spacing: 0.01em; transition: all var(--transition-base); white-space: nowrap; box-shadow: 0 2px 6px rgba(13,148,136,0.2); }\n .btn-primary:hover { filter: brightness(1.07); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(13,148,136,0.26); }\n .btn-primary:active { transform: scale(0.97); }\n\n .filter-bar { display: flex; align-items: center; gap: 4px; flex-shrink: 0; flex-wrap: wrap; padding: 2px 0; border-bottom: 1px solid var(--border-light); }\n .filter-bar .sep { width: 1px; height: 14px; background: var(--border); margin: 0 1px; }\n\n .metrics-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 4px; flex-shrink: 0; }\n .metric-card { background: var(--bg-card); border-radius: var(--radius-md); padding: 5px 7px; border: 1px solid var(--border-light); position: relative; overflow: hidden; transition: all var(--transition-base); cursor: default; display: flex; flex-direction: column; gap: 1px; box-shadow: var(--shadow-sm); }\n .metric-card:hover { border-color: var(--border-active); box-shadow: var(--shadow-elevated); transform: translateY(-1px); }\n .metric-card .card-accent { position: absolute; top: 0; left: 0; width: 100%; height: 2px; }\n .metric-card:nth-child(1) .card-accent { background: #0d9488; }\n .metric-card:nth-child(2) .card-accent { background: #0e7bb5; }\n .metric-card:nth-child(3) .card-accent { background: #e8590c; }\n .metric-card:nth-child(4) .card-accent { background: #d4891a; }\n .metric-card:nth-child(5) .card-accent { background: #7c3aed; }\n .metric-card .card-icon { font-size: 7px; color: var(--text-muted); }\n .metric-card .card-label { font-size: 6px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 600; }\n .metric-card .card-value { font-family: var(--font-display); font-size: clamp(10px, 1.1vw, 15px); font-weight: 700; color: var(--text-primary); letter-spacing: -0.02em; line-height: 1; }\n .metric-card .card-sub { font-size: 5px; color: var(--text-muted); font-weight: 500; }\n\n .charts-area { flex: 1; min-height: 0; display: flex; flex-direction: column; gap: 4px; }\n .chart-box-top { flex: 0 0 40%; background: var(--bg-card); border-radius: var(--radius-md); border: 1px solid var(--border-light); padding: 7px 10px; display: flex; flex-direction: column; overflow: hidden; box-shadow: var(--shadow-sm); }\n .charts-row-bottom { flex: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 4px; min-height: 0; }\n .chart-box { background: var(--bg-card); border-radius: var(--radius-md); border: 1px solid var(--border-light); padding: 7px 10px; display: flex; flex-direction: column; overflow: hidden; box-shadow: var(--shadow-sm); }\n .chart-box-header { display: flex; align-items: center; justify-content: space-between; flex-shrink: 0; margin-bottom: 3px; gap: 4px; }\n .chart-box-title { font-family: var(--font-display); font-size: 8px; font-weight: 600; letter-spacing: 0.02em; color: var(--text-secondary); text-transform: uppercase; white-space: nowrap; }\n .chart-legend { display: flex; gap: 4px; font-size: 6px; color: var(--text-muted); flex-wrap: wrap; justify-content: flex-end; }\n .chart-legend span { display: flex; align-items: center; gap: 2px; white-space: nowrap; }\n .chart-legend .dot { width: 4px; height: 4px; border-radius: 50%; display: inline-block; flex-shrink: 0; }\n .chart-legend .dash { width: 6px; height: 0; border-top: 1.5px dashed; display: inline-block; flex-shrink: 0; }\n .chart-canvas-wrap { flex: 1; min-height: 0; position: relative; width: 100%; }\n .chart-canvas-wrap canvas { width: 100%; height: 100%; display: block; }\n\n .table-section { flex-shrink: 0; background: var(--bg-card); border-radius: var(--radius-md); border: 1px solid var(--border-light); overflow: hidden; display: flex; flex-direction: column; max-height: 78px; box-shadow: var(--shadow-sm); }\n .table-section-header { display: flex; align-items: center; justify-content: space-between; padding: 2px 9px; border-bottom: 1px solid var(--border-light); flex-shrink: 0; }\n .table-section-title { font-family: var(--font-display); font-size: 8px; font-weight: 600; letter-spacing: 0.03em; color: var(--text-secondary); text-transform: uppercase; }\n .table-wrap { overflow-y: auto; flex: 1; }\n .table-wrap::-webkit-scrollbar { width: 2px; }\n .table-wrap::-webkit-scrollbar-track { background: transparent; }\n .table-wrap::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }\n table { width: 100%; border-collapse: collapse; font-size: 6px; font-family: var(--font-display); }\n thead th { text-align: left; padding: 2px 4px; color: var(--text-muted); font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; font-size: 5px; position: sticky; top: 0; background: var(--bg-card); z-index: 2; border-bottom: 1px solid var(--border-light); }\n tbody td { padding: 2px 4px; border-bottom: 1px solid rgba(0,0,0,0.03); color: var(--text-primary); font-weight: 500; letter-spacing: 0.01em; }\n tbody tr:nth-child(even) { background: var(--bg-stripe); }\n tbody tr:hover { background: rgba(13,148,136,0.03); }\n tbody tr { transition: background var(--transition-base); }\n .cell-highlight { color: #0d9488; font-weight: 700; }\n .cell-warn { color: #e8590c; font-weight: 600; }\n .cell-amber { color: #d4891a; font-weight: 600; }\n\n .toast-container { position: fixed; top: 10px; right: 10px; z-index: 9999; display: flex; flex-direction: column; gap: 4px; pointer-events: none; }\n .toast { background: #fff; border: 1px solid var(--border); border-left: 3px solid #0d9488; color: var(--text-primary); padding: 5px 10px; border-radius: var(--radius); font-size: 10px; font-family: var(--font-body); box-shadow: 0 4px 18px rgba(0,0,0,0.1); opacity: 0; transform: translateX(30px); transition: all 280ms cubic-bezier(0.4,0,0.2,1); pointer-events: auto; display: flex; align-items: center; gap: 4px; }\n .toast.show { opacity: 1; transform: translateX(0); }\n .toast i { color: #0d9488; font-size: 11px; }\n\n @media (max-width: 1400px) {\n .metrics-row { grid-template-columns: repeat(3, 1fr); }\n .charts-row-bottom { grid-template-columns: 1fr; }\n .dashboard { aspect-ratio: auto; max-height: none; }\n .chart-box-top { flex: 0 0 190px; }\n .chart-box { min-height: 180px; }\n }\n @media (max-width: 900px) {\n .metrics-row { grid-template-columns: repeat(2, 1fr); }\n .header { flex-direction: column; align-items: stretch; }\n .header-right { justify-content: flex-start; }\n select, .date-input { font-size: 8px; padding: 2px 4px; }\n .date-input { width: 72px; }\n .dashboard { padding: 5px; }\n }\n @media (max-width: 600px) {\n .metrics-row { grid-template-columns: 1fr 1fr; }\n .btn-group button { padding: 2px 5px; font-size: 8px; }\n .header-right { gap: 2px; }\n table { font-size: 5px; }\n thead th, tbody td { padding: 1px 2px; }\n .filter-bar { gap: 2px; }\n .filter-bar .sep { display: none; }\n }\n @media print {\n body { background: #fff; padding: 0; }\n .dashboard { box-shadow: none; border: none; aspect-ratio: auto; max-height: none; }\n .btn-primary, .btn-action, .btn-group, select, .date-input, .filter-bar { display: none; }\n .toast-container { display: none; }\n }\n </style>\n</head>\n<body>\n\n<div class=\"dashboard\" id=\"dashboard\">\n\n <div class=\"header\">\n <div class=\"header-left\">\n <div class=\"logo-mark\"><i class=\"fa-solid fa-weight-hanging\"></i></div>\n <div class=\"header-title\"><h1>载荷与生产效率统计</h1><span>Payload & Productivity Analytics</span></div>\n </div>\n <div class=\"header-right\">\n <div class=\"btn-group\" id=\"granularityGroup\">\n <button data-gran=\"day\" class=\"active\">按日</button>\n <button data-gran=\"month\">按月</button>\n <button data-gran=\"year\">按年</button>\n </div>\n <input type=\"date\" class=\"date-input\" id=\"startDate\" value=\"2026-04-01\">\n <span class=\"date-separator\">至</span>\n <input type=\"date\" class=\"date-input\" id=\"endDate\" value=\"2026-04-27\">\n <button class=\"btn-primary\" onclick=\"refreshData()\"><i class=\"fa-solid fa-arrows-rotate\"></i> 刷新</button>\n <button class=\"btn-action\" onclick=\"exportCSV()\" title=\"导出CSV\"><i class=\"fa-solid fa-file-csv\"></i></button>\n <button class=\"btn-action\" onclick=\"printDashboard()\" title=\"打印\"><i class=\"fa-solid fa-print\"></i></button>\n </div>\n </div>\n\n <div class=\"filter-bar\">\n <span class=\"filter-label\"><i class=\"fa-solid fa-filter\"></i> 筛选</span>\n <span class=\"sep\"></span>\n <span class=\"filter-label\">矿区</span>\n <select id=\"filterMine\"><option value=\"\">全部矿区</option></select>\n <span class=\"filter-label\">车型</span>\n <select id=\"filterType\"><option value=\"\">全部车型</option></select>\n <span class=\"filter-label\">车辆</span>\n <select id=\"filterVehicle\"><option value=\"\">全部车辆</option></select>\n <span id=\"filterSummary\" style=\"font-size:6px;color:var(--text-muted);margin-left:2px;\"></span>\n </div>\n\n <div class=\"metrics-row\" id=\"metricsRow\"></div>\n\n <div class=\"charts-area\">\n <div class=\"chart-box-top\" id=\"lineUtilBox\">\n <div class=\"chart-box-header\">\n <span class=\"chart-box-title\"><i class=\"fa-solid fa-chart-line\"></i> 利用率与吨公里趋势</span>\n <div class=\"chart-legend\">\n <span><span class=\"dot\" style=\"background:#0d9488\"></span>设备利用率</span>\n <span><span class=\"dash\" style=\"border-color:#7c3aed\"></span>吨公里</span>\n </div>\n </div>\n <div class=\"chart-canvas-wrap\"><canvas id=\"lineUtilChart\"></canvas></div>\n </div>\n\n <div class=\"charts-row-bottom\">\n <div class=\"chart-box\" id=\"barChartBox\">\n <div class=\"chart-box-header\">\n <span class=\"chart-box-title\"><i class=\"fa-solid fa-chart-bar\"></i> 装载与超载分布</span>\n <div class=\"chart-legend\">\n <span><span class=\"dot\" style=\"background:#0e7bb5\"></span>装载重量</span>\n <span><span class=\"dot\" style=\"background:#e8590c\"></span>超载次数</span>\n <span><span class=\"dot\" style=\"background:#d4891a\"></span>超载率</span>\n </div>\n </div>\n <div class=\"chart-canvas-wrap\"><canvas id=\"barChart\"></canvas></div>\n </div>\n\n <div class=\"chart-box\" id=\"lineLoadBox\">\n <div class=\"chart-box-header\">\n <span class=\"chart-box-title\"><i class=\"fa-solid fa-chart-line\"></i> 装载量趋势</span>\n <div class=\"chart-legend\">\n <span><span class=\"dot\" style=\"background:#0e7bb5\"></span>装载重量(t)</span>\n <span><span class=\"dot\" style=\"background:#16a34a\"></span>装载次数</span>\n </div>\n </div>\n <div class=\"chart-canvas-wrap\"><canvas id=\"lineLoadChart\"></canvas></div>\n </div>\n </div>\n </div>\n\n <div class=\"table-section\">\n <div class=\"table-section-header\">\n <span class=\"table-section-title\"><i class=\"fa-solid fa-table-list\"></i> 载荷数据明细</span>\n <span style=\"font-size:6px;color:var(--text-muted)\" id=\"tableInfo\">共 0 条记录</span>\n </div>\n <div class=\"table-wrap\">\n <table>\n <thead>\n <tr>\n <th>周期</th>\n <th>设备利用率(%)</th>\n <th>装载重量(t)</th>\n <th>装载次数</th>\n <th>超载次数</th>\n <th>超载率(%)</th>\n <th>吨公里(t·km)</th>\n </tr>\n </thead>\n <tbody id=\"tableBody\"></tbody>\n </table>\n </div>\n </div>\n</div>\n\n<div class=\"toast-container\" id=\"toastContainer\"></div>\n\n<script>\n(function() {\n 'use strict';\n\n const VEHICLES = [\n { id: 'A-E-001', mine: '矿区A', type: '电动矿卡', capacity: 60 },\n { id: 'A-E-002', mine: '矿区A', type: '电动矿卡', capacity: 60 },\n { id: 'A-E-003', mine: '矿区A', type: '电动矿卡', capacity: 55 },\n { id: 'A-F-001', mine: '矿区A', type: '燃油矿卡', capacity: 70 },\n { id: 'A-F-002', mine: '矿区A', type: '燃油矿卡', capacity: 70 },\n { id: 'B-E-001', mine: '矿区B', type: '电动矿卡', capacity: 60 },\n { id: 'B-E-002', mine: '矿区B', type: '电动矿卡', capacity: 55 },\n { id: 'B-H-001', mine: '矿区B', type: '混合动力矿卡', capacity: 65 },\n { id: 'B-H-002', mine: '矿区B', type: '混合动力矿卡', capacity: 65 },\n { id: 'B-H-003', mine: '矿区B', type: '混合动力矿卡', capacity: 60 },\n { id: 'C-F-001', mine: '矿区C', type: '燃油矿卡', capacity: 70 },\n { id: 'C-F-002', mine: '矿区C', type: '燃油矿卡', capacity: 75 },\n { id: 'C-F-003', mine: '矿区C', type: '燃油矿卡', capacity: 70 },\n { id: 'C-H-001', mine: '矿区C', type: '混合动力矿卡', capacity: 65 },\n { id: 'C-H-002', mine: '矿区C', type: '混合动力矿卡', capacity: 60 },\n ];\n\n const MINES = [...new Set(VEHICLES.map(v => v.mine))];\n const TYPES = [...new Set(VEHICLES.map(v => v.type))];\n\n const state = {\n granularity: 'day',\n startDate: '2026-04-01',\n endDate: '2026-04-27',\n filterMine: '',\n filterType: '',\n filterVehicle: '',\n };\n\n const $ = s => document.querySelector(s);\n const dom = {\n granularityGroup: $('#granularityGroup'),\n startDate: $('#startDate'), endDate: $('#endDate'),\n filterMine: $('#filterMine'), filterType: $('#filterType'), filterVehicle: $('#filterVehicle'),\n filterSummary: $('#filterSummary'),\n metricsRow: $('#metricsRow'),\n lineUtilChart: $('#lineUtilChart'),\n barChart: $('#barChart'),\n lineLoadChart: $('#lineLoadChart'),\n tableBody: $('#tableBody'), tableInfo: $('#tableInfo'),\n toastContainer: $('#toastContainer'),\n };\n\n function showToast(msg, icon) {\n const el = document.createElement('div'); el.className = 'toast';\n el.innerHTML = `<i class=\"fa-solid ${icon || 'fa-circle-check'}\"></i>${msg}`;\n dom.toastContainer.appendChild(el);\n requestAnimationFrame(() => el.classList.add('show'));\n setTimeout(() => { el.classList.remove('show'); setTimeout(() => el.remove(), 350); }, 2000);\n }\n\n function getFilteredVehicles() {\n return VEHICLES.filter(v => {\n if (state.filterMine && v.mine !== state.filterMine) return false;\n if (state.filterType && v.type !== state.filterType) return false;\n if (state.filterVehicle && v.id !== state.filterVehicle) return false;\n return true;\n });\n }\n\n function populateFilterOptions() {\n const pm = dom.filterMine.value;\n dom.filterMine.innerHTML = '<option value=\"\">全部矿区</option>' + MINES.map(m => `<option value=\"${m}\" ${pm===m?'selected':''}>${m}</option>`).join('');\n if (pm && MINES.includes(pm)) dom.filterMine.value = pm;\n const pt = dom.filterType.value;\n const mf = dom.filterMine.value;\n const at = mf ? [...new Set(VEHICLES.filter(v=>v.mine===mf).map(v=>v.type))] : TYPES;\n dom.filterType.innerHTML = '<option value=\"\">全部车型</option>' + at.map(t => `<option value=\"${t}\" ${pt===t?'selected':''}>${t}</option>`).join('');\n if (pt && at.includes(pt)) dom.filterType.value = pt; else dom.filterType.value = '';\n const pv = dom.filterVehicle.value;\n const tf = dom.filterType.value;\n let av = VEHICLES; if (mf) av = av.filter(v=>v.mine===mf); if (tf) av = av.filter(v=>v.type===tf);\n dom.filterVehicle.innerHTML = '<option value=\"\">全部车辆</option>' + av.map(v => `<option value=\"${v.id}\" ${pv===v.id?'selected':''}>${v.id}(${v.capacity}t)</option>`).join('');\n if (pv && av.some(v=>v.id===pv)) dom.filterVehicle.value = pv; else dom.filterVehicle.value = '';\n const fv = getFilteredVehicles();\n dom.filterSummary.textContent = fv.length < VEHICLES.length ? `已筛选 ${fv.length}/${VEHICLES.length} 辆车` : '';\n }\n\n function seedRandom(seed) { let s = seed; return () => { s = (s * 16807 + 0) % 2147483647; return (s - 1) / 2147483646; }; }\n\n function generateRecords() {\n const vehicles = getFilteredVehicles();\n const records = [];\n const sd = new Date(state.startDate), ed = new Date(state.endDate);\n if (isNaN(sd.getTime()) || isNaN(ed.getTime()) || sd > ed || vehicles.length === 0) return records;\n\n const labels = [];\n const cur = new Date(sd);\n if (state.granularity === 'day') {\n while (cur <= ed) { labels.push(new Date(cur)); cur.setDate(cur.getDate() + 1); }\n } else if (state.granularity === 'month') {\n cur.setDate(1); const em = new Date(ed.getFullYear(), ed.getMonth(), 1);\n while (cur <= em) { labels.push(new Date(cur)); cur.setMonth(cur.getMonth() + 1); }\n } else {\n cur.setMonth(0, 1); const ey = new Date(ed.getFullYear(), 0, 1);\n while (cur <= ey) { labels.push(new Date(cur)); cur.setFullYear(cur.getFullYear() + 1); }\n }\n if (labels.length > 120) { const step = Math.ceil(labels.length / 100); return labels.filter((_, i) => i % step === 0).map((d, i) => genOne(d, i, vehicles)); }\n return labels.map((d, i) => genOne(d, i, vehicles));\n }\n\n function genOne(d, i, vehicles) {\n let totalPlanHours = 0, totalActualHours = 0, totalLoadWeight = 0, totalOverloadCount = 0, totalLoads = 0, totalTonKm = 0, totalLoadCount = 0;\n\n vehicles.forEach(v => {\n const rng = seedRandom(d.getTime() % 99997 + v.id.charCodeAt(0) * 73 + (i||0) * 41 + v.capacity * 7);\n const planHoursBase = state.granularity === 'year' ? 240 : state.granularity === 'month' ? 20 : 0.8;\n const planHours = planHoursBase * (0.9 + rng() * 0.2);\n const utilization = 0.55 + rng() * 0.38;\n const actualHours = planHours * utilization;\n\n const loadsPerHour = 1.5 + rng() * 3.5;\n const totalLoadsV = Math.round(actualHours * loadsPerHour);\n const avgLoad = v.capacity * (0.65 + rng() * 0.50);\n const loadWeightV = totalLoadsV * avgLoad;\n const overloadRateV = 0.03 + rng() * 0.18;\n const overloadCountV = Math.round(totalLoadsV * overloadRateV);\n const avgDistance = 3 + rng() * 5;\n const tonKmV = loadWeightV * avgDistance;\n\n totalPlanHours += planHours;\n totalActualHours += actualHours;\n totalLoadWeight += loadWeightV;\n totalOverloadCount += overloadCountV;\n totalLoads += totalLoadsV;\n totalTonKm += tonKmV;\n totalLoadCount += totalLoadsV;\n });\n\n const utilizationVal = totalPlanHours > 0 ? Math.round(totalActualHours / totalPlanHours * 1000) / 10 : 0;\n const overloadRateVal = totalLoads > 0 ? Math.round(totalOverloadCount / totalLoads * 1000) / 10 : 0;\n\n return {\n label: d,\n utilization: utilizationVal,\n loadWeight: Math.round(totalLoadWeight * 10) / 10,\n loadCount: totalLoadCount,\n overloadCount: totalOverloadCount,\n overloadRate: overloadRateVal,\n tonKm: Math.round(totalTonKm * 10) / 10,\n };\n }\n\n function fmtLabel(d) {\n if (state.granularity === 'day') return `${d.getMonth() + 1}/${d.getDate()}`;\n if (state.granularity === 'month') return `${d.getFullYear()}/${String(d.getMonth() + 1).padStart(2, '0')}`;\n return `${d.getFullYear()}`;\n }\n function fmtFull(d) {\n if (state.granularity === 'day') return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`;\n if (state.granularity === 'month') return `${d.getFullYear()}年${d.getMonth() + 1}月`;\n return `${d.getFullYear()}年`;\n }\n\n function renderMetrics(records) {\n if (!records.length) {\n dom.metricsRow.innerHTML = Array.from({ length: 5 }, () => `<div class=\"metric-card\"><div class=\"card-accent\"></div><div class=\"card-label\">--</div><div class=\"card-value\">0</div></div>`).join('');\n return;\n }\n const sm = records.reduce((a, r) => {\n a.utilSum += r.utilization * (r.loadWeight || 1);\n a.weightSum += r.loadWeight || 0;\n a.loadWeight += r.loadWeight;\n a.loadCount += r.loadCount;\n a.overloadCount += r.overloadCount;\n a.tonKm += r.tonKm;\n return a;\n }, { utilSum: 0, weightSum: 0, loadWeight: 0, loadCount: 0, overloadCount: 0, tonKm: 0 });\n\n const avgUtil = sm.weightSum > 0 ? Math.round(sm.utilSum / sm.weightSum * 10) / 10 : 0;\n const avgOverloadRate = records.reduce((s, r) => s + r.overloadRate, 0) / records.length;\n\n const cfg = [\n { icon: 'fa-gauge', label: '设备利用率', value: avgUtil.toFixed(1), unit: '%', color: '#0d9488' },\n { icon: 'fa-weight-hanging', label: '装载重量', value: (sm.loadWeight / 10000).toFixed(2), unit: '万吨', color: '#0e7bb5' },\n { icon: 'fa-triangle-exclamation', label: '超载次数', value: sm.overloadCount.toString(), unit: '次', color: '#e8590c' },\n { icon: 'fa-percent', label: '超载率', value: avgOverloadRate.toFixed(1), unit: '%', color: '#d4891a' },\n { icon: 'fa-road', label: '吨公里', value: (sm.tonKm / 10000).toFixed(2), unit: '万t·km', color: '#7c3aed' },\n ];\n\n dom.metricsRow.innerHTML = cfg.map(c => `\n <div class=\"metric-card\">\n <div class=\"card-accent\"></div>\n <div class=\"card-icon\"><i class=\"fa-solid ${c.icon}\"></i></div>\n <div class=\"card-label\">${c.label}</div>\n <div class=\"card-value\" style=\"color:${c.color}\">${c.value}</div>\n <div class=\"card-sub\">${c.unit}</div>\n </div>`).join('');\n }\n\n function renderLineUtilChart(canvas, records) {\n if (!canvas || !records.length) return;\n const dpr = window.devicePixelRatio || 1;\n const rect = canvas.parentElement.getBoundingClientRect();\n const w = rect.width, h = rect.height;\n canvas.width = w * dpr; canvas.height = h * dpr;\n canvas.style.width = w + 'px'; canvas.style.height = h + 'px';\n const ctx = canvas.getContext('2d'); ctx.scale(dpr, dpr); ctx.clearRect(0, 0, w, h);\n\n const pad = { top: 6, right: 38, bottom: 22, left: 38 };\n const cw = w - pad.left - pad.right, ch = h - pad.top - pad.bottom;\n\n let maxUtil = 100, maxTonKm = 0;\n records.forEach(r => { if (r.tonKm > maxTonKm) maxTonKm = r.tonKm; });\n maxTonKm = Math.ceil(maxTonKm * 1.2) || 100;\n\n const gl = 5;\n ctx.strokeStyle = '#eef0f4'; ctx.lineWidth = 1;\n for (let i = 0; i <= gl; i++) {\n const y = pad.top + (ch / gl) * i;\n ctx.beginPath(); ctx.moveTo(pad.left, y); ctx.lineTo(w - pad.right, y); ctx.stroke();\n ctx.fillStyle = '#94a3b8'; ctx.font = '6px DM Sans, sans-serif'; ctx.textAlign = 'right';\n ctx.fillText(Math.round(maxUtil - (maxUtil / gl) * i), pad.left - 3, y + 3);\n }\n for (let i = 0; i <= gl; i++) {\n const y = pad.top + (ch / gl) * i;\n ctx.fillStyle = '#94a3b8'; ctx.textAlign = 'left';\n ctx.fillText(Math.round(maxTonKm - (maxTonKm / gl) * i), w - pad.right + 4, y + 3);\n }\n\n const xs = cw / Math.max(records.length - 1, 1);\n const ml = Math.min(records.length, 14);\n const ls = Math.max(1, Math.floor(records.length / ml));\n ctx.fillStyle = '#94a3b8'; ctx.font = '6px DM Sans, sans-serif'; ctx.textAlign = 'center';\n records.forEach((r, i) => { if (i % ls === 0 || i === records.length - 1) ctx.fillText(fmtLabel(r.label), pad.left + xs * i, pad.top + ch + 12); });\n\n // Utilization solid line\n ctx.strokeStyle = '#0d9488'; ctx.lineWidth = 2; ctx.lineJoin = 'round'; ctx.lineCap = 'round';\n ctx.setLineDash([]);\n ctx.beginPath();\n records.forEach((r, ii) => { const x = pad.left + xs * ii, y = pad.top + ch - (r.utilization / maxUtil) * ch; if (ii === 0) ctx.moveTo(x, y); else ctx.lineTo(x, y); });\n ctx.stroke();\n records.forEach((r, ii) => {\n const x = pad.left + xs * ii, y = pad.top + ch - (r.utilization / maxUtil) * ch;\n ctx.fillStyle = '#ffffff'; ctx.beginPath(); ctx.arc(x, y, 3, 0, Math.PI * 2); ctx.fill();\n ctx.fillStyle = '#0d9488'; ctx.beginPath(); ctx.arc(x, y, 1.8, 0, Math.PI * 2); ctx.fill();\n });\n\n // TonKm dashed line\n ctx.strokeStyle = '#7c3aed'; ctx.lineWidth = 1.8; ctx.setLineDash([4, 3]);\n ctx.beginPath();\n records.forEach((r, ii) => { const x = pad.left + xs * ii, y = pad.top + ch - (r.tonKm / maxTonKm) * ch; if (ii === 0) ctx.moveTo(x, y); else ctx.lineTo(x, y); });\n ctx.stroke(); ctx.setLineDash([]);\n }\n\n function renderBarChart(canvas, records) {\n if (!canvas || !records.length) return;\n const dpr = window.devicePixelRatio || 1;\n const rect = canvas.parentElement.getBoundingClientRect();\n const w = rect.width, h = rect.height;\n canvas.width = w * dpr; canvas.height = h * dpr;\n canvas.style.width = w + 'px'; canvas.style.height = h + 'px';\n const ctx = canvas.getContext('2d'); ctx.scale(dpr, dpr); ctx.clearRect(0, 0, w, h);\n\n const pad = { top: 6, right: 10, bottom: 22, left: 40 };\n const cw = w - pad.left - pad.right, ch = h - pad.top - pad.bottom;\n\n let maxWeight = 0, maxOverload = 0;\n records.forEach(r => { if (r.loadWeight > maxWeight) maxWeight = r.loadWeight; if (r.overloadCount > maxOverload) maxOverload = r.overloadCount; });\n maxWeight = Math.ceil(maxWeight * 1.25) || 100;\n maxOverload = Math.ceil(maxOverload * 1.3) || 10;\n\n const gl = 4;\n ctx.strokeStyle = '#eef0f4'; ctx.lineWidth = 1;\n for (let i = 0; i <= gl; i++) {\n const y = pad.top + (ch / gl) * i;\n ctx.beginPath(); ctx.moveTo(pad.left, y); ctx.lineTo(w - pad.right, y); ctx.stroke();\n ctx.fillStyle = '#94a3b8'; ctx.font = '6px DM Sans, sans-serif'; ctx.textAlign = 'right';\n ctx.fillText(Math.round(maxWeight - (maxWeight / gl) * i), pad.left - 3, y + 3);\n }\n\n const maxBars = Math.min(records.length, 20);\n const step = Math.max(1, Math.floor(records.length / maxBars));\n const di = records.map((_, i) => i).filter((_, i) => i % step === 0 || i === records.length - 1);\n const groupGap = 3;\n const totalW = cw / di.length;\n const barW = (totalW - groupGap) / 2;\n if (barW <= 0) return;\n\n di.forEach((ri, bi) => {\n const r = records[ri];\n const groupX = pad.left + (cw / di.length) * bi;\n\n let barHW = (r.loadWeight / maxWeight) * ch;\n barHW = Math.max(barHW, r.loadWeight > 0 ? 1 : 0);\n ctx.fillStyle = '#0e7bb5';\n ctx.fillRect(groupX, pad.top + ch - barHW, barW, barHW);\n\n let barHO = (r.overloadCount / maxOverload) * ch;\n barHO = Math.max(barHO, r.overloadCount > 0 ? 1 : 0);\n ctx.fillStyle = '#e8590c';\n ctx.fillRect(groupX + barW + groupGap / 2, pad.top + ch - barHO, barW, barHO);\n\n const dotY = pad.top + ch - (r.overloadRate / 100) * ch;\n ctx.fillStyle = '#d4891a';\n ctx.beginPath(); ctx.arc(groupX + totalW / 2, dotY, 3, 0, Math.PI * 2); ctx.fill();\n\n const ls2 = Math.max(1, Math.floor(di.length / 8));\n if (bi % ls2 === 0 || bi === di.length - 1) {\n ctx.fillStyle = '#94a3b8'; ctx.font = '6px DM Sans, sans-serif'; ctx.textAlign = 'center';\n ctx.fillText(fmtLabel(r.label), groupX + totalW / 2, pad.top + ch + 12);\n }\n });\n }\n\n function renderLineLoadChart(canvas, records) {\n if (!canvas || !records.length) return;\n const dpr = window.devicePixelRatio || 1;\n const rect = canvas.parentElement.getBoundingClientRect();\n const w = rect.width, h = rect.height;\n canvas.width = w * dpr; canvas.height = h * dpr;\n canvas.style.width = w + 'px'; canvas.style.height = h + 'px';\n const ctx = canvas.getContext('2d'); ctx.scale(dpr, dpr); ctx.clearRect(0, 0, w, h);\n\n const pad = { top: 6, right: 38, bottom: 22, left: 40 };\n const cw = w - pad.left - pad.right, ch = h - pad.top - pad.bottom;\n\n let maxWeight = 0, maxCount = 0;\n records.forEach(r => { if (r.loadWeight > maxWeight) maxWeight = r.loadWeight; if (r.loadCount > maxCount) maxCount = r.loadCount; });\n maxWeight = Math.ceil(maxWeight * 1.2) || 100;\n maxCount = Math.ceil(maxCount * 1.2) || 10;\n\n const gl = 5;\n ctx.strokeStyle = '#eef0f4'; ctx.lineWidth = 1;\n for (let i = 0; i <= gl; i++) {\n const y = pad.top + (ch / gl) * i;\n ctx.beginPath(); ctx.moveTo(pad.left, y); ctx.lineTo(w - pad.right, y); ctx.stroke();\n ctx.fillStyle = '#94a3b8'; ctx.font = '6px DM Sans, sans-serif'; ctx.textAlign = 'right';\n ctx.fillText(Math.round(maxWeight - (maxWeight / gl) * i), pad.left - 3, y + 3);\n }\n for (let i = 0; i <= gl; i++) {\n const y = pad.top + (ch / gl) * i;\n ctx.fillStyle = '#94a3b8'; ctx.textAlign = 'left';\n ctx.fillText(Math.round(maxCount - (maxCount / gl) * i), w - pad.right + 4, y + 3);\n }\n\n const xs = cw / Math.max(records.length - 1, 1);\n const ml = Math.min(records.length, 14);\n const ls = Math.max(1, Math.floor(records.length / ml));\n ctx.fillStyle = '#94a3b8'; ctx.font = '6px DM Sans, sans-serif'; ctx.textAlign = 'center';\n records.forEach((r, i) => { if (i % ls === 0 || i === records.length - 1) ctx.fillText(fmtLabel(r.label), pad.left + xs * i, pad.top + ch + 12); });\n\n // Load weight solid line (left axis)\n ctx.strokeStyle = '#0e7bb5'; ctx.lineWidth = 2; ctx.lineJoin = 'round'; ctx.lineCap = 'round';\n ctx.setLineDash([]);\n ctx.beginPath();\n records.forEach((r, ii) => { const x = pad.left + xs * ii, y = pad.top + ch - (r.loadWeight / maxWeight) * ch; if (ii === 0) ctx.moveTo(x, y); else ctx.lineTo(x, y); });\n ctx.stroke();\n records.forEach((r, ii) => {\n const x = pad.left + xs * ii, y = pad.top + ch - (r.loadWeight / maxWeight) * ch;\n ctx.fillStyle = '#ffffff'; ctx.beginPath(); ctx.arc(x, y, 3, 0, Math.PI * 2); ctx.fill();\n ctx.fillStyle = '#0e7bb5'; ctx.beginPath(); ctx.arc(x, y, 1.8, 0, Math.PI * 2); ctx.fill();\n });\n\n // Load count dashed line (right axis)\n ctx.strokeStyle = '#16a34a'; ctx.lineWidth = 1.8; ctx.setLineDash([4, 3]);\n ctx.beginPath();\n records.forEach((r, ii) => { const x = pad.left + xs * ii, y = pad.top + ch - (r.loadCount / maxCount) * ch; if (ii === 0) ctx.moveTo(x, y); else ctx.lineTo(x, y); });\n ctx.stroke(); ctx.setLineDash([]);\n }\n\n function renderTable(records) {\n dom.tableInfo.textContent = `共 ${records.length} 条记录`;\n if (!records.length) { dom.tableBody.innerHTML = '<tr><td colspan=\"7\" style=\"text-align:center;color:var(--text-muted);padding:6px;\">暂无数据</td></tr>'; return; }\n const disp = records.slice(-18);\n dom.tableBody.innerHTML = disp.map(r => `\n <tr>\n <td>${fmtFull(r.label)}</td>\n <td class=\"cell-highlight\">${r.utilization.toFixed(1)}</td>\n <td>${r.loadWeight.toFixed(1)}</td>\n <td>${r.loadCount}</td>\n <td class=\"cell-warn\">${r.overloadCount}</td>\n <td class=\"cell-amber\">${r.overloadRate.toFixed(1)}</td>\n <td>${r.tonKm.toFixed(1)}</td>\n </tr>`).join('');\n }\n\n let currentRecords = [];\n\n function updateDashboard(silent) {\n currentRecords = generateRecords();\n renderMetrics(currentRecords);\n renderLineUtilChart(dom.lineUtilChart, currentRecords);\n renderBarChart(dom.barChart, currentRecords);\n renderLineLoadChart(dom.lineLoadChart, currentRecords);\n renderTable(currentRecords);\n populateFilterOptions();\n if (!silent) {\n const gl = state.granularity === 'day' ? '日' : state.granularity === 'month' ? '月' : '年';\n const vc = getFilteredVehicles().length;\n showToast(`横轴按${gl} · ${vc}辆车 · 已加载 ${currentRecords.length} 条载荷数据`, 'fa-circle-check');\n }\n }\n\n dom.granularityGroup.addEventListener('click', e => {\n const btn = e.target.closest('button'); if (!btn || btn.classList.contains('active')) return;\n dom.granularityGroup.querySelectorAll('button').forEach(b => b.classList.remove('active'));\n btn.classList.add('active'); state.granularity = btn.dataset.gran;\n const now = new Date();\n if (state.granularity === 'day') { state.startDate = new Date(now.getFullYear(), now.getMonth(), 1).toISOString().slice(0, 10); state.endDate = now.toISOString().slice(0, 10); }\n else if (state.granularity === 'month') { state.startDate = new Date(now.getFullYear() - 1, now.getMonth(), 1).toISOString().slice(0, 10); state.endDate = now.toISOString().slice(0, 10); }\n else { state.startDate = new Date(now.getFullYear() - 4, 0, 1).toISOString().slice(0, 10); state.endDate = now.toISOString().slice(0, 10); }\n dom.startDate.value = state.startDate; dom.endDate.value = state.endDate;\n updateDashboard();\n });\n\n dom.filterMine.addEventListener('change', () => { state.filterMine = dom.filterMine.value; state.filterType = ''; state.filterVehicle = ''; updateDashboard(); });\n dom.filterType.addEventListener('change', () => { state.filterType = dom.filterType.value; state.filterVehicle = ''; updateDashboard(); });\n dom.filterVehicle.addEventListener('change', () => { state.filterVehicle = dom.filterVehicle.value; updateDashboard(); });\n dom.startDate.addEventListener('change', () => { state.startDate = dom.startDate.value; updateDashboard(); });\n dom.endDate.addEventListener('change', () => { state.endDate = dom.endDate.value; updateDashboard(); });\n\n window.refreshData = function() {\n state.startDate = dom.startDate.value; state.endDate = dom.endDate.value;\n state.filterMine = dom.filterMine.value; state.filterType = dom.filterType.value; state.filterVehicle = dom.filterVehicle.value;\n updateDashboard();\n };\n\n window.exportCSV = function() {\n if (!currentRecords.length) { showToast('无数据可导出', 'fa-triangle-exclamation'); return; }\n let csv = '周期,设备利用率(%),装载重量(t),装载次数,超载次数,超载率(%),吨公里(t\\u00b7km)\\n';\n currentRecords.forEach(r => {\n csv += [fmtFull(r.label), r.utilization.toFixed(1), r.loadWeight.toFixed(1), r.loadCount, r.overloadCount, r.overloadRate.toFixed(1), r.tonKm.toFixed(1)].join(',') + '\\n';\n });\n const blob = new Blob(['\\uFEFF' + csv], { type: 'text/csv;charset=utf-8;' });\n const url = URL.createObjectURL(blob); const a = document.createElement('a');\n a.href = url; a.download = `载荷生产效率_${state.granularity}_${state.startDate}_${state.endDate}.csv`; a.click();\n URL.revokeObjectURL(url);\n showToast('CSV 已下载', 'fa-file-csv');\n };\n\n window.printDashboard = function() { showToast('正在准备打印...', 'fa-print'); setTimeout(() => window.print(), 400); };\n\n let rt;\n window.addEventListener('resize', () => {\n clearTimeout(rt); rt = setTimeout(() => {\n if (currentRecords.length > 0) {\n renderLineUtilChart(dom.lineUtilChart, currentRecords);\n renderBarChart(dom.barChart, currentRecords);\n renderLineLoadChart(dom.lineLoadChart, currentRecords);\n }\n }, 250);\n });\n\n function init() {\n const now = new Date();\n state.startDate = new Date(now.getFullYear(), now.getMonth(), 1).toISOString().slice(0, 10);\n state.endDate = now.toISOString().slice(0, 10);\n dom.startDate.value = state.startDate; dom.endDate.value = state.endDate;\n updateDashboard(true);\n }\n init();\n})();\n</script>\n\n</body>\n</html>"
},
"next": ["装载重量改为装载次数", "添加超载预警阈值线", "导出PDF载荷报告", "对比多矿区载荷效率", "接入实时载荷数据"],
"breakpoint": "none"
}
```
推理
用户要求在载荷与生产效率数据统计界面中，在"装载与超载分布"图表后面增加一个"装载量趋势图"。让我回顾一下之前的载荷与生产效率界面是什么样的。
之前的载荷与生产效率数据统计界面包含了：
- 5项核心指标卡片（设备利用率/装载重量/超载次数/超载率/吨公里）
- 折线趋势图（利用率与吨公里趋势）
- 柱状分布图（装载与超载分布）
- 数据明细表
- 矿区→车型→车辆三级联动筛选
- 横轴按日/月/年切换
现在用户要求在"装载与超载分布"后面增加"装载量趋势图"。这意味着图表区域需要扩展，目前是双图布局（1.4fr + 1fr），需要变成三图布局或者调整布局来容纳第三个图。
考虑到16:9的比例，我可以在charts-area中增加第三个图表。目前的布局是两列（1.4fr 1fr），可以调整为三列（1fr 1fr 1fr）或者上行一个大的趋势图，下行两个图。
让我重新设计布局：
- 上行：利用率与吨公里趋势（折线图）—— 全宽
- 下行三列：装载与超载分布（柱状图）| 装载量趋势（新折线图）| 或者保持两列但调整
实际上，考虑到16:9的宽屏比例，我可以：
- 上行全宽：利用率与吨公里趋势（折线图，较大）
- 下行两列：装载与超载分布 | 装载量趋势
这样布局更合理。装载量趋势可以展示装载重量随时间的变化趋势，用一个折线图或面积图来展示。
让我生成完整的HTML代码。需要包含：
1. 5项指标卡片
2. 上行：利用率与吨公里趋势（双Y轴折线图）
3. 下行左：装载与超载分布（柱状图）
4. 下行右：装载量趋势（折线图，展示装载重量随时间变化）
5. 数据明细表
6. 矿区→车型→车辆三级筛选
7. 年/月/日横轴切换
让我调整布局比例。上行趋势图约占40-45%高度，下行两个图各占55-60%高度。
实际上我重新考虑：保持原有布局，在charts-area中增加第三个图。原来的charts-area是两列(1.4fr 1fr)，现在可以改成三列或者上行全宽+下行两列。
我觉得上行全宽折线趋势图 + 下行两列（左柱状图 + 右装载量趋势折线图）是不错的布局。
让我重新设计。装载量趋势图可以展示每段时间的装载重量变化，用折线图表示。
关于数据：装载量（loadWeight）已经在数据中，可以直接用折线图展示其随时间的变化趋势。
现在让我编写完整的代码。
之前的载荷与生产效率数据统计界面包含了：
- 5项核心指标卡片（设备利用率/装载重量/超载次数/超载率/吨公里）
- 折线趋势图（利用率与吨公里趋势）
- 柱状分布图（装载与超载分布）
- 数据明细表
- 矿区→车型→车辆三级联动筛选
- 横轴按日/月/年切换
现在用户要求在"装载与超载分布"后面增加"装载量趋势图"。这意味着图表区域需要扩展，目前是双图布局（1.4fr + 1fr），需要变成三图布局或者调整布局来容纳第三个图。
考虑到16:9的比例，我可以在charts-area中增加第三个图表。目前的布局是两列（1.4fr 1fr），可以调整为三列（1fr 1fr 1fr）或者上行一个大的趋势图，下行两个图。
让我重新设计布局：
- 上行：利用率与吨公里趋势（折线图）—— 全宽
- 下行三列：装载与超载分布（柱状图）| 装载量趋势（新折线图）| 或者保持两列但调整
实际上，考虑到16:9的宽屏比例，我可以：
- 上行全宽：利用率与吨公里趋势（折线图，较大）
- 下行两列：装载与超载分布 | 装载量趋势
这样布局更合理。装载量趋势可以展示装载重量随时间的变化趋势，用一个折线图或面积图来展示。
让我生成完整的HTML代码。需要包含：
1. 5项指标卡片
2. 上行：利用率与吨公里趋势（双Y轴折线图）
3. 下行左：装载与超载分布（柱状图）
4. 下行右：装载量趋势（折线图，展示装载重量随时间变化）
5. 数据明细表
6. 矿区→车型→车辆三级筛选
7. 年/月/日横轴切换
让我调整布局比例。上行趋势图约占40-45%高度，下行两个图各占55-60%高度。
实际上我重新考虑：保持原有布局，在charts-area中增加第三个图。原来的charts-area是两列(1.4fr 1fr)，现在可以改成三列或者上行全宽+下行两列。
我觉得上行全宽折线趋势图 + 下行两列（左柱状图 + 右装载量趋势折线图）是不错的布局。
让我重新设计。装载量趋势图可以展示每段时间的装载重量变化，用折线图表示。
关于数据：装载量（loadWeight）已经在数据中，可以直接用折线图展示其随时间的变化趋势。
现在让我编写完整的代码。
角色
assistant
content
total_tokens
299731
summary
载荷与生产效率统计仪表盘（新增装载量趋势图），白底企业级设计，5项核心指标卡片，上行全宽利用率与吨公里双Y轴折线趋势图，下行双列（装载与超载分布柱状图+装载量趋势折线图），矿区→车型→车辆三级筛选，横轴按日/月/年切换，CSV导出与打印。
uiParsing
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