通达信预警回测

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export default {
  async fetch(request) {
    const url = new URL(request.url);

    // ==========================================
    // 代理路由：保持 3 级容错分发不变
    // ==========================================
    if (url.pathname === "/api/kline") {
      const code = url.searchParams.get("code");
      const prefix = url.searchParams.get("prefix");
      const provider = url.searchParams.get("provider");
    
      let targetUrl = "";
    
      if (provider === "em") {
          const secid = (prefix === "sh" ? "1." : "0.") + code;
          targetUrl = `https://push2his.eastmoney.com/api/qt/stock/kline/get?secid=${secid}&klt=101&fqt=1&end=20500000&lmt=320&fields1=f1,f2,f3,f4,f5,f6&fields2=f51,f52,f53,f54,f55,f56,f57,f58,f59,f60,f61`;
      } else if (provider === "sina") {
          targetUrl = `https://quotes.sina.cn/cn/api/json_v2.php/CN_MarketData.getKLineData?symbol=${prefix}${code}&scale=240&ma=no&datalen=320`;
      } else {
          targetUrl = `https://web.ifzq.gtimg.cn/appstock/app/fqkline/get?param=${prefix}${code},day,,,320,qfq`;
      }
    
      try {
        const fetchRes = await fetch(targetUrl, {
            headers: { "User-Agent": "Mozilla/5.0" }
        });
        const data = await fetchRes.arrayBuffer();
      
        return new Response(data, {
          headers: {
            "Content-Type": "application/json;charset=UTF-8",
            "Access-Control-Allow-Origin": "*",
          },
        });
      } catch (e) {
        return new Response(JSON.stringify({ error: e.message }), { status: 500, headers: { "Access-Control-Allow-Origin": "*" } });
      }
    }

    // ==========================================
    // 前端 HTML 界面
    // ==========================================
    const html = `
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>量化策略回测终端</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css" rel="stylesheet">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/html2canvas/1.4.1/html2canvas.min.js"></script>
    <style>
        :root { --up: #ef4444; --down: #22c55e; --bg-main: #0f172a; --bg-card: #1e293b; }
        body { background-color: var(--bg-main); color: #f1f5f9; font-family: 'Inter', system-ui, sans-serif; }
        .card { background: var(--bg-card); border: 1px solid #334155; border-radius: 1rem; }
        .input-dark { background: #0f172a; border: 1px solid #475569; color: #38bdf8; font-weight: 700; padding: 0.5rem; border-radius: 0.5rem; color-scheme: dark; transition: all 0.2s ease;}
        .input-dark:focus { border-color: #3b82f6; outline: none; box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3); }
        .btn-primary { background: #2563eb; transition: all 0.2s; }
        .btn-primary:hover { background: #3b82f6; transform: translateY(-1px); }
        .btn-primary:disabled { background: #64748b; cursor: not-allowed; }
        .btn-warning { background: #ea580c; transition: all 0.2s; }
        .btn-warning:hover { background: #f97316; transform: translateY(-1px); }
        .radio-custom:checked + div { border-color: #3b82f6; background: rgba(59, 130, 246, 0.1); }
        ::-webkit-scrollbar { width: 6px; height: 6px; }
        ::-webkit-scrollbar-thumb { background: #475569; border-radius: 10px; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
        .animate-row { animation: fadeIn 0.3s ease-out forwards; }
        .group-header { cursor: pointer; user-select: none; transition: background-color 0.2s; }
        .group-header:hover { background-color: #334155; }
        .chevron-icon { transition: transform 0.3s ease; }
        .group-open .chevron-icon { transform: rotate(180deg); }
    </style>
</head>
<body class="min-h-screen p-4 md:p-8">
    <div class="max-w-[1400px] mx-auto space-y-6">
      
        <div class="card p-6 shadow-2xl w-full">
            <div class="flex flex-wrap items-center justify-between gap-4 border-b border-slate-700 pb-4">
                <div class="flex items-center gap-4">
                    <div class="bg-blue-600 p-4 rounded-xl shadow-[0_0_15px_rgba(37,99,235,0.6)]"><i class="fa-solid fa-chart-line text-2xl text-white"></i></div>
                    <div class="flex flex-col gap-2">
                        <h1 class="text-2xl font-bold tracking-tight text-white flex items-center gap-3 flex-wrap">
                            策略预警回测终端
                            <span class="bg-blue-600/90 hover:bg-blue-500 transition-colors text-white text-sm px-3 py-1 rounded-md shadow-[0_0_12px_rgba(37,99,235,0.8)] font-bold tracking-widest flex items-center gap-1.5 border border-blue-400 cursor-default">
                                <i class="fa-brands fa-qq text-lg"></i> 股票QQ交流群: 643618300
                            </span>
                        </h1>
                    </div>
                </div>
                <div class="flex gap-3">
                    <input type="file" id="fileInput" class="hidden" accept=".txt">
                    <button id="importBtn" onclick="document.getElementById('fileInput').click()" class="bg-slate-700 hover:bg-slate-600 px-5 py-2.5 rounded-lg border border-slate-500 transition-colors font-medium shadow-md">
                        <i class="fa-solid fa-file-import mr-2"></i>上传数据 (TXT)
                    </button>
                    <button id="runBtn" disabled class="btn-primary px-6 py-2.5 rounded-lg font-bold shadow-lg shadow-blue-900/50">
                        <i class="fa-solid fa-play mr-2"></i>开始回测
                    </button>
                </div>
            </div>

            <div class="grid grid-cols-1 md:grid-cols-4 gap-6 pt-6">
                <div class="space-y-3">
                    <h3 class="text-sm font-bold text-slate-300 border-l-2 border-blue-500 pl-2">查询与筛选</h3>
                    <div class="flex items-center justify-between">
                        <label class="text-xs text-slate-400">数量 (空/0查全部):</label>
                        <input type="number" id="limitCount" placeholder="全部" min="0" class="input-dark w-24 text-center text-sm shadow-inner">
                    </div>
                    <div class="flex items-center justify-between">
                        <label class="text-xs text-slate-400">预警时段 (过滤):</label>
                        <div class="flex items-center gap-1">
                            <input type="time" id="startTime" class="input-dark text-xs p-1 shadow-inner">
                            <span class="text-slate-500 font-bold">-</span>
                            <input type="time" id="endTime" class="input-dark text-xs p-1 shadow-inner">
                        </div>
                    </div>
                </div>

                <div class="md:col-span-3 space-y-3">
                    <h3 class="text-sm font-bold text-slate-300 border-l-2 border-purple-500 pl-2">结算价提取基准</h3>
                    <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-3">
                        <label class="cursor-pointer relative">
                            <input type="radio" name="timeMode" value="mode1" checked class="peer hidden radio-custom">
                            <div class="border border-slate-600 rounded-lg p-3 hover:border-blue-400 transition-colors h-full flex flex-col justify-center bg-slate-800/50 shadow-inner min-h-[72px]">
                                <div class="font-bold text-sm text-white mb-1">① 预警当日</div>
                                <div class="text-[10px] text-slate-400 leading-tight">提取预警当天的收盘价</div>
                            </div>
                        </label>
                        <label class="cursor-pointer relative">
                            <input type="radio" name="timeMode" value="mode2" class="peer hidden radio-custom">
                            <div class="border border-slate-600 rounded-lg p-3 hover:border-blue-400 transition-colors h-full flex flex-col justify-center bg-slate-800/50 shadow-inner min-h-[72px]">
                                <div class="font-bold text-sm text-white mb-1">② 最新实时</div>
                                <div class="text-[10px] text-slate-400 leading-tight">提取股票当下的最新价</div>
                            </div>
                        </label>
                        <label class="cursor-pointer relative">
                            <input type="radio" name="timeMode" value="mode3" class="peer hidden radio-custom">
                            <div class="border border-slate-600 rounded-lg p-3 hover:border-blue-400 transition-colors h-full flex flex-col justify-center bg-slate-800/50 shadow-inner min-h-[72px]">
                                <div class="font-bold text-sm text-white mb-1">③ 单日偏移</div>
                                <div id="customDaysUi" class="flex gap-2 opacity-30 pointer-events-none transition-opacity">
                                    <div class="flex items-center gap-1">
                                        <span class="text-[10px]">向后偏移</span>
                                        <input type="number" id="nextDays" value="1" min="1" max="20" class="input-dark w-12 p-1 text-center text-xs">
                                        <span class="text-[10px]">个交易日</span>
                                    </div>
                                </div>
                            </div>
                        </label>
                        <label class="cursor-pointer relative">
                            <input type="radio" name="timeMode" value="mode4" class="peer hidden radio-custom">
                            <div class="border border-purple-600 rounded-lg p-3 hover:border-purple-400 transition-colors h-full flex flex-col justify-center bg-purple-900/20 shadow-inner min-h-[72px]">
                                <div class="font-bold text-sm text-purple-300 mb-1">④ 连续三日追踪</div>
                                <div class="text-[10px] text-slate-400 leading-tight">T+0至T+2每日独立涨跌</div>
                            </div>
                        </label>
                    </div>
                </div>
            </div>
        </div>

        <div id="progressBox" class="hidden card p-6 border border-blue-900 shadow-[0_0_15px_rgba(59,130,246,0.1)] w-full">
            <div class="flex justify-between items-center text-xs mb-2 text-blue-300">
                <div class="flex items-center gap-2">
                    <span id="progressText" class="font-medium">初始化引擎中...</span>
                    <span id="sourceBadge" class="hidden px-1.5 py-0.5 rounded-[4px] text-[10px] font-black text-white shadow-md transition-all duration-200"></span>
                </div>
                <span id="progressPercent" class="font-mono font-bold">0%</span>
            </div>
            <div class="w-full bg-slate-800 rounded-full h-2">
                <div id="progressBar" class="bg-gradient-to-r from-blue-600 to-blue-400 h-2 rounded-full transition-all duration-300 shadow-[0_0_10px_rgba(59,130,246,0.8)]" style="width: 0%"></div>
            </div>
        </div>

        <div id="results" class="space-y-6 pb-10 w-full">
            <div class="text-center py-20 text-slate-600 border-2 border-dashed border-slate-700 rounded-2xl bg-slate-800/50">
                <i class="fa-solid fa-inbox text-5xl mb-4 opacity-50"></i>
                <p class="text-sm">尚未导入数据。请上传包含预警信息的 TXT 文件。</p>
            </div>
        </div>
    </div>

    <div id="actionButtons" class="hidden fixed bottom-8 right-8 z-50 flex flex-col gap-3">
        <button id="screenshotBtn" class="bg-indigo-600 hover:bg-indigo-500 text-white px-6 py-3 rounded-full shadow-[0_10px_25px_rgba(79,70,229,0.4)] transition-all transform hover:scale-105 font-bold flex items-center justify-center gap-2">
            <i class="fa-solid fa-camera"></i> 保存长图
        </button>
        <button id="exportBtn" class="bg-emerald-600 hover:bg-emerald-500 text-white px-6 py-3 rounded-full shadow-[0_10px_25px_rgba(16,185,129,0.4)] transition-all transform hover:scale-105 font-bold flex items-center justify-center gap-2">
            <i class="fa-solid fa-file-excel"></i> 导出 CSV
        </button>
    </div>

    <script>
        const API_URL = "/api/kline"; 
      
        let rawContent = "";
        let finalData = []; 
        let globalRunId = 0; 
        let currentRunMode = "";

        function getDynamicFileName(extension) {
            const limit = document.getElementById('limitCount').value;
            const limitStr = (!limit || parseInt(limit) === 0) ? "全部" : limit + "只";
            const st = document.getElementById('startTime').value || "09:30";
            const et = document.getElementById('endTime').value || "15:00";
            const timeStr = st.replace(':', '') + "-" + et.replace(':', '');
            let modeStr = "";
            if (currentRunMode === 'mode1') modeStr = "当日";
            else if (currentRunMode === 'mode2') modeStr = "实时";
            else if (currentRunMode === 'mode3') modeStr = "偏移";
            else if (currentRunMode === 'mode4') modeStr = "连续追踪";
          
            const dateStr = new Date().toLocaleDateString().replace(/\\//g, '');
            return \`量化复盘_[\${limitStr}]_[\${timeStr}]_[\${modeStr}]_\${dateStr}.\${extension}\`;
        }

        document.querySelectorAll('input[name="timeMode"]').forEach(radio => {
            radio.addEventListener('change', (e) => {
                const customUi = document.getElementById('customDaysUi');
                if (e.target.value === 'mode3') customUi.classList.remove('opacity-30', 'pointer-events-none');
                else customUi.classList.add('opacity-30', 'pointer-events-none');
            });
        });

        document.getElementById('fileInput').addEventListener('change', function(e) {
            const file = e.target.files[0];
            const reader = new FileReader();
            reader.onload = function(event) {
                const uint8 = new Uint8Array(event.target.result);
                rawContent = new TextDecoder('gb18030').decode(uint8);
                document.getElementById('runBtn').disabled = false;
                document.getElementById('importBtn').innerHTML = '<i class="fa-solid fa-check mr-2 text-emerald-400"></i>文件已就绪 (' + file.name + ')';
            };
            reader.readAsArrayBuffer(file);
        });

        const delay = ms => new Promise(res => setTimeout(res, ms));

        document.getElementById('runBtn').addEventListener('click', async function() {
            globalRunId++;
            const currentRunId = globalRunId; 

            const resultsDiv = document.getElementById('results');
            const progressBox = document.getElementById('progressBox');
            const runBtn = this;
          
            resultsDiv.innerHTML = "";
            finalData = [];
            progressBox.classList.remove('hidden');
            document.getElementById('actionButtons').classList.add('hidden');

            runBtn.innerHTML = '<i class="fa-solid fa-rotate-right fa-spin mr-2"></i>中断重试';
            runBtn.classList.remove('btn-primary');
            runBtn.classList.add('btn-warning');

            const limit = parseInt(document.getElementById('limitCount').value) || 999999;
            const startTime = document.getElementById('startTime').value;
            const endTime = document.getElementById('endTime').value;
            const timeMode = document.querySelector('input[name="timeMode"]:checked').value;
            currentRunMode = timeMode;
            const nextDays = parseInt(document.getElementById('nextDays').value) || 0;

            const lines = rawContent.split(/\\r?\\n/);
            let strategyMap = new Map();

            lines.forEach(line => {
                const rawParts = line.trim().split(/\\t|\\s{2,}/);
                const parts = rawParts.filter(p => p.trim() !== '');

                if (parts.length < 5) return;

                const code = parts[0].trim();
                const name = parts[1].trim(); 

                let dateIdx = -1;
                for(let j = 2; j < parts.length; j++) {
                    if(parts[j].match(/^\\d{4}[-/]\\d{1,2}[-/]\\d{1,2}/)) {
                        dateIdx = j;
                        break;
                    }
                }
                if (dateIdx === -1) return;

                let dateTimeStr = parts[dateIdx].trim();
                let date, time, priceIdx;

                if (dateTimeStr.includes(' ')) {
                    let dtParts = dateTimeStr.split(/\\s+/);
                    date = dtParts[0];
                    time = dtParts[1] || "15:00"; 
                    priceIdx = dateIdx + 1;
                } else {
                    date = parts[dateIdx].trim();
                    time = parts[dateIdx+1].trim();
                    priceIdx = dateIdx + 2;
                }

                const price = parseFloat(parts[priceIdx]); 
                if(isNaN(price)) return;

                const strategy = parts[parts.length - 1].trim(); 

                if (startTime && time < startTime) return;
                if (endTime && time > endTime) return;

                if (!strategyMap.has(strategy)) strategyMap.set(strategy, []);
                strategyMap.get(strategy).push({ code, name, date, time, price, strategy });
            });

            const strategies = Array.from(strategyMap.keys());
            if(strategies.length === 0) {
                alert("未解析到符合条件的数据，请检查格式或时间过滤段！");
                resetButton(runBtn);
                progressBox.classList.add('hidden');
                return;
            }

            let processedCount = 0;
            const totalToProcess = Array.from(strategyMap.values()).reduce((sum, arr) => sum + Math.min(arr.length, limit), 0);
            let groupIndex = 0;

            for (const sName of strategies) {
                if (currentRunId !== globalRunId) return;

                let group = strategyMap.get(sName);
                group.sort((a, b) => (a.date + a.time).localeCompare(b.date + b.time));
                group = group.slice(0, limit);
                const processedGroup = [];

                for (let i = 0; i < group.length; i += 5) {
                    if (currentRunId !== globalRunId) return; 
                  
                    const chunk = group.slice(i, i + 5);
                    const chunkRes = await Promise.all(chunk.map(async item => {
                        const result = await fetchAndCalculate(item, timeMode, nextDays);
                        processedCount++;
                        if (currentRunId === globalRunId) {
                            updateProgress(processedCount, totalToProcess, \`查询分析中 [\${sName}]: \${item.name}\`, result.provider);
                        }
                        return result;
                    }));
                  
                    if (currentRunId !== globalRunId) return; 
                    processedGroup.push(...chunkRes);
                    await delay(50);
                }

                if (currentRunId !== globalRunId) return; 
                renderStrategyGroup(sName, processedGroup, groupIndex++, timeMode);
                finalData.push({ strategy: sName, items: processedGroup, timeMode });
            }

            if (currentRunId === globalRunId) {
                resetButton(runBtn);
                updateProgress(100, 100, "分析计算完成！");
                document.getElementById('actionButtons').classList.remove('hidden');
            }
        });

        function resetButton(btn) {
            btn.innerHTML = '<i class="fa-solid fa-play mr-2"></i>开始回测';
            btn.classList.remove('btn-warning');
            btn.classList.add('btn-primary');
        }

        function updateProgress(cur, total, text, provider) {
            const p = total === 0 ? 100 : Math.floor((cur / total) * 100);
            document.getElementById('progressBar').style.width = p + "%";
            document.getElementById('progressPercent').innerText = p + "%";
            document.getElementById('progressText').innerText = text;

            const badge = document.getElementById('sourceBadge');
            if (p >= 100) {
                badge.classList.add('hidden');
            } else if (provider && provider !== '无') {
                badge.classList.remove('hidden');
                badge.innerText = provider;
                badge.className = "px-1.5 py-0.5 rounded-[4px] text-[10px] font-black text-white shadow-md transition-colors ";
                if (provider === '东') badge.className += "bg-red-500/80";
                else if (provider === '腾') badge.className += "bg-blue-500/80";
                else if (provider === '新') badge.className += "bg-yellow-600/80";
            }
        }

        const toYYYYMMDD = (dStr) => {
            const matches = String(dStr).match(/(\\d{4})[-/]?(\\d{1,2})[-/]?(\\d{1,2})/);
            if (matches) {
                return matches[1] + matches[2].padStart(2, '0') + matches[3].padStart(2, '0');
            }
            return String(dStr).replace(/\\D/g, '');
        };

        async function fetchAndCalculate(stock, mode, next) {
            const getPrefix = (c) => {
                if (c.startsWith('60') || c.startsWith('68')) return 'sh';
                if (c.startsWith('00') || c.startsWith('30')) return 'sz';
                if (c.startsWith('8') || c.startsWith('43') || c.startsWith('92') || c.startsWith('87')) return 'bj';
                return 'sz'; 
            };
            const prefix = getPrefix(stock.code);
            const fullCode = prefix + stock.code;
          
            const fetchEM = async () => {
                const res = await fetch(\`\${API_URL}?code=\${stock.code}&prefix=\${prefix}&provider=em&_=\${Date.now()}\`);
                const json = await res.json();
                if (json && json.data && json.data.klines && json.data.klines.length > 0) {
                    const kData = json.data.klines.map(line => {
                        const parts = line.split(',');
                        return [parts[0], parts[1], parts[2], parts[3], parts[4], parts[5]];
                    });
                    return { kData, provider: '东' };
                }
                throw new Error("EM None");
            };

            const fetchTX = async () => {
                if (prefix === 'bj') throw new Error("TX skip BJ"); 
                const res = await fetch(\`\${API_URL}?code=\${stock.code}&prefix=\${prefix}&provider=tx&_=\${Date.now()}\`);
                const json = await res.json();
                let kData = json.data[fullCode]?.qfqday || json.data[fullCode]?.day;
                if (kData && kData.length > 0) {
                    const qtData = json.data[fullCode].qt?.[fullCode];
                    if (qtData) {
                        const qtDateStr = qtData[30].substring(0, 8); 
                        const formattedQtDate = qtDateStr.substring(0,4) + "-" + qtDateStr.substring(4,6) + "-" + qtDateStr.substring(6,8);
                        const currentPrice = parseFloat(qtData[3]); 
                        if (kData[kData.length - 1][0] !== formattedQtDate && currentPrice > 0) {
                            kData.push([formattedQtDate, qtData[5], qtData[3], qtData[33], qtData[34], qtData[36]]);
                        }
                    }
                    return { kData, provider: '腾' };
                }
                throw new Error("TX None");
            };

            const fetchSina = async () => {
                const res = await fetch(\`\${API_URL}?code=\${stock.code}&prefix=\${prefix}&provider=sina&_=\${Date.now()}\`);
                const json = await res.json();
                if (json && json.length > 0) {
                    const kData = json.map(item => [item.day.split(' ')[0], item.open, item.close, item.high, item.low, item.volume]);
                    return { kData, provider: '新' };
                }
                throw new Error("Sina None");
            };

            const now = new Date();
            const utc = now.getTime() + (now.getTimezoneOffset() * 60000);
            const bjTime = new Date(utc + (3600000 * 8));
            const h = bjTime.getHours();
            const m = bjTime.getMinutes();
            const timeVal = h * 100 + m;
          
            const isTradingTime = timeVal >= 915 && timeVal < 1500;
          
            let fetchResult = null;

            try {
                if (isTradingTime) {
                    try { fetchResult = await fetchEM(); }
                    catch (e1) {
                        try { fetchResult = await fetchTX(); }
                        catch (e2) { fetchResult = await fetchSina(); }
                    }
                } else {
                    fetchResult = await new Promise((resolve, reject) => {
                        let errCount = 0;
                        const checkReject = () => { errCount++; if (errCount === 3) reject(new Error("All APIs failed")); };
                        fetchEM().then(resolve).catch(checkReject);
                        fetchTX().then(resolve).catch(checkReject);
                        fetchSina().then(resolve).catch(checkReject);
                    });
                }

                const { kData, provider } = fetchResult;
                const normBaseDate = toYYYYMMDD(stock.date);
              
                let baseIdx = -1;
                if (mode !== 'mode2') {
                    for (let i = 0; i < kData.length; i++) {
                        if (toYYYYMMDD(kData[i][0]) === normBaseDate) {
                            baseIdx = i; break;
                        }
                    }
                    if (baseIdx === -1) {
                        for (let i = kData.length - 1; i >= 0; i--) {
                            if (toYYYYMMDD(kData[i][0]) < normBaseDate) {
                                baseIdx = i; break;
                            }
                        }
                    }
                    if (baseIdx === -1) throw new Error("Date Out of Range");
                }

                const alertPrice = stock.price; 

                if (mode === 'mode4') {
                    const day1 = kData[baseIdx];
                    const day2 = baseIdx + 1 < kData.length ? kData[baseIdx + 1] : null;
                    const day3 = baseIdx + 2 < kData.length ? kData[baseIdx + 2] : null;

                    const d1Close = parseFloat(day1[2]);
                    const d1Profit = ((d1Close - alertPrice) / alertPrice) * 100;

                    let d2Close = null, d2Profit = null;
                    if (day2) {
                        d2Close = parseFloat(day2[2]);
                        d2Profit = ((d2Close - d1Close) / d1Close) * 100;
                    }

                    let d3Close = null, d3Profit = null;
                    if (day3) {
                        d3Close = parseFloat(day3[2]);
                        d3Profit = ((d3Close - d2Close) / d2Close) * 100;
                    }

                    const finalClose = d3Close || d2Close || d1Close;
                    const totalProfit = ((finalClose - alertPrice) / alertPrice) * 100;
                    const daysAvailable = 1 + (day2 ? 1 : 0) + (day3 ? 1 : 0);

                    return { 
                        ...stock, 
                        d1Close, d1Profit, d1Date: day1[0].substring(5),
                        d2Close, d2Profit, d2Date: day2 ? day2[0].substring(5) : null,
                        d3Close, d3Profit, d3Date: day3 ? day3[0].substring(5) : null,
                        closePrice: finalClose, 
                        profitRatio: totalProfit, 
                        isWin: totalProfit > 0,
                        isTie: totalProfit === 0,
                        matchedDate: (day3 || day2 || day1)[0].substring(5),
                        daysAvailable: daysAvailable,
                        error: false,
                        provider: provider
                    };
                }
              
                let targetIdx = -1;
                if (mode === 'mode2') targetIdx = kData.length - 1;
                else if (mode === 'mode1') targetIdx = baseIdx;
                else if (mode === 'mode3') {
                    targetIdx = baseIdx + next;
                    if (targetIdx >= kData.length) throw new Error("Target Future Date Not Exists");
                }
              
                if (targetIdx < 0) targetIdx = 0;
                const closePrice = parseFloat(kData[targetIdx][2]);
                const matchedDateStr = kData[targetIdx][0].substring(5); 
              
                const profitDiff = closePrice - alertPrice;
                const profitRatio = (profitDiff / alertPrice) * 100;

                return { 
                    ...stock, 
                    closePrice: closePrice, 
                    profitRatio: profitRatio, 
                    isWin: profitDiff > 0,
                    isTie: profitDiff === 0,
                    matchedDate: matchedDateStr,
                    error: false,
                    provider: provider
                };
            } catch (e) {
                return { ...stock, closePrice: stock.price, profitRatio: 0, isWin: false, isTie: false, error: true, daysAvailable: 0, provider: '无' };
            }
        }

        window.toggleAccordion = function(id) {
            const allBodies = document.querySelectorAll('.strategy-body');
            allBodies.forEach(body => {
                if (body.id === id) {
                    body.classList.toggle('hidden');
                    body.previousElementSibling.classList.toggle('group-open');
                } else {
                    body.classList.add('hidden'); 
                    body.previousElementSibling.classList.remove('group-open');
                }
            });
        };

        function renderStrategyGroup(strategyName, list, groupId, timeMode) {
            const container = document.getElementById('results');
            const validStocks = list.filter(i => !i.error);
            const totalValidCount = validStocks.length;
          
            let totalProfitRatioSum = 0;
            let winCount = 0;
          
            let sumD1 = 0, countD1 = 0;
            let sumD2 = 0, countD2 = 0;
            let sumD3 = 0, countD3 = 0;
          
            validStocks.forEach(i => {
                totalProfitRatioSum += i.profitRatio;
                if(i.isWin) winCount++;
              
                if (timeMode === 'mode4') {
                    if (i.d1Profit !== null && i.d1Profit !== undefined) { sumD1 += i.d1Profit; countD1++; }
                    if (i.d2Profit !== null && i.d2Profit !== undefined) { sumD2 += i.d2Profit; countD2++; }
                    if (i.d3Profit !== null && i.d3Profit !== undefined) { sumD3 += i.d3Profit; countD3++; }
                }
            });
          
            const strategyTotalProfitRatio = totalValidCount > 0 ? (totalProfitRatioSum / totalValidCount).toFixed(2) : "0.00";
            const winRate = totalValidCount > 0 ? ((winCount / totalValidCount) * 100).toFixed(1) : "0.0";
          
            const profitColorClass = strategyTotalProfitRatio > 0 ? 'text-red-500' : strategyTotalProfitRatio < 0 ? 'text-green-500' : 'text-slate-300';
            const profitSign = strategyTotalProfitRatio > 0 ? '+' : '';

            const maxDays = totalValidCount > 0 ? Math.max(1, ...validStocks.map(s => s.daysAvailable || 1)) : 1;
            const refStock = validStocks[0] || {};
            const refD1 = refStock.d1Date || '--';
            const refD2 = refStock.d2Date || '--';
            const refD3 = refStock.d3Date || '--';

            let mode4HeaderHtml = '';
            let theadHtml = '';
          
            if (timeMode === 'mode4') {
                const avgD1 = countD1 > 0 ? (sumD1 / countD1).toFixed(2) : "0.00";
                const avgD2 = countD2 > 0 ? (sumD2 / countD2).toFixed(2) : "0.00";
                const avgD3 = countD3 > 0 ? (sumD3 / countD3).toFixed(2) : "0.00";
              
                mode4HeaderHtml += \`<div class="flex gap-4 sm:gap-6 text-sm items-center flex-wrap justify-end w-full lg:w-auto mt-2 lg:mt-0">\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center"><span class="text-slate-400 text-xs uppercase mb-1">有效股票</span><span class="text-white font-mono text-base font-bold">\${totalValidCount}</span></div>\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+0</span><span class="font-mono text-sm font-bold my-0.5 \${avgD1 > 0 ? 'text-red-500' : avgD1 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD1 > 0 ? '+' : ''}\${avgD1}%</span><span class="text-blue-300 text-xs">(\${refD1})</span></div>\`;
                if (maxDays >= 2) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+1</span><span class="font-mono text-sm font-bold my-0.5 \${avgD2 > 0 ? 'text-red-500' : avgD2 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD2 > 0 ? '+' : ''}\${avgD2}%</span><span class="text-blue-300 text-xs">(\${refD2})</span></div>\`;
                if (maxDays >= 3) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+2</span><span class="font-mono text-sm font-bold my-0.5 \${avgD3 > 0 ? 'text-red-500' : avgD3 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD3 > 0 ? '+' : ''}\${avgD3}%</span><span class="text-blue-300 text-xs">(\${refD3})</span></div>\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4"><span class="text-purple-400 text-xs uppercase font-bold mb-1">累计总盈亏</span><span class="\${profitColorClass} font-bold font-mono text-lg">\${profitSign}\${strategyTotalProfitRatio}%</span></div>\`;
                mode4HeaderHtml += \`</div>\`;
              
                theadHtml += \`<th class="p-4 font-medium text-right text-blue-300 whitespace-nowrap">预警价</th>\`;
                theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+0 (当日)</th>\`;
                if (maxDays >= 2) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+1 (次日)</th>\`;
                if (maxDays >= 3) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+2 (三日)</th>\`;
                theadHtml += \`<th class="p-4 font-medium text-right text-purple-300 whitespace-nowrap">累计盈亏</th>\`;
            } else {
                mode4HeaderHtml += \`<div class="flex gap-4 sm:gap-8 text-sm items-center">\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-end"><span class="text-slate-500 text-[10px] uppercase">有效股票数</span><span class="text-white font-mono font-bold">\${totalValidCount}</span></div>\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-end"><span class="text-slate-500 text-[10px] uppercase">胜率</span><span class="text-white font-mono font-bold">\${winRate}%</span></div>\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-end"><span class="text-slate-500 text-[10px] uppercase">策略总盈亏</span><span class="\${profitColorClass} font-bold font-mono text-base">\${profitSign}\${strategyTotalProfitRatio}%</span></div>\`;
                mode4HeaderHtml += \`</div>\`;
              
                theadHtml += \`<th class="p-4 font-medium text-right text-blue-300 whitespace-nowrap">文档买入价</th>\`;
                theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">结算收盘价 <span class="text-[9px] text-slate-500 normal-case tracking-normal">(取值日期)</span></th>\`;
                theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">单只盈亏比</th>\`;
            }

            let tbodyHtml = '';
            list.forEach(i => {
                const pColor = i.profitRatio > 0 ? 'text-red-500' : i.profitRatio < 0 ? 'text-green-500' : 'text-slate-400';
                const statusTag = i.error ? '<span class="px-2 py-1 rounded bg-slate-500/30 text-slate-400 border border-slate-500/50 whitespace-nowrap">未收录</span>' :
                                 i.isWin ? '<span class="px-2 py-1 rounded bg-red-500/10 text-red-500 border border-red-500/20 whitespace-nowrap">盈利</span>' : 
                                 i.isTie ? '<span class="px-2 py-1 rounded bg-slate-500/10 text-slate-400 border border-slate-500/20 whitespace-nowrap">平盘</span>' : 
                                 '<span class="px-2 py-1 rounded bg-green-500/10 text-green-500 border border-green-500/20 whitespace-nowrap">亏损</span>';
              
                let rowInnerHtml = '';
                if (timeMode === 'mode4') {
                    rowInnerHtml += \`<td class="p-4 text-right font-mono text-blue-300 font-bold whitespace-nowrap align-middle">\${i.price.toFixed(2)}</td>\`;
                  
                    if (i.error) {
                        rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 2) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 3) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                    } else {
                        const c1 = i.d1Profit > 0 ? 'text-red-500' : i.d1Profit < 0 ? 'text-green-500' : 'text-slate-300';
                        rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                            <div class="text-slate-200 text-sm">\${i.d1Close.toFixed(2)}</div>
                            <div class="font-bold text-xs \${c1} py-0.5">\${(i.d1Profit>0?'+':'')}\${i.d1Profit.toFixed(2)}%</div>
                            <div class="text-slate-400 text-xs">(\${i.d1Date})</div>
                        </td>\`;
                      
                        if (maxDays >= 2) {
                            if (i.d2Close) {
                                const c2 = i.d2Profit > 0 ? 'text-red-500' : i.d2Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d2Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c2} py-0.5">\${(i.d2Profit>0?'+':'')}\${i.d2Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d2Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }
                      
                        if (maxDays >= 3) {
                            if (i.d3Close) {
                                const c3 = i.d3Profit > 0 ? 'text-red-500' : i.d3Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d3Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c3} py-0.5">\${(i.d3Profit>0?'+':'')}\${i.d3Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d3Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }
                    }
                    rowInnerHtml += \`<td class="p-4 text-right font-mono font-bold \${pColor} text-sm whitespace-nowrap align-middle">\${i.error ? '--' : (i.profitRatio > 0 ? '+' : '') + i.profitRatio.toFixed(2) + '%'}</td>\`;
                } else {
                    rowInnerHtml += \`<td class="p-4 text-right font-mono text-blue-300 font-bold whitespace-nowrap">\${i.price.toFixed(2)}</td>\`;
                    rowInnerHtml += \`<td class="p-4 text-right font-mono text-slate-300 whitespace-nowrap">\${i.error ? '--' : \`\${i.closePrice.toFixed(2)} <br><span class="text-[10px] text-slate-500 font-bold">(\${i.matchedDate})</span>\`}</td>\`;
                    rowInnerHtml += \`<td class="p-4 text-right font-mono font-bold \${pColor} whitespace-nowrap">\${i.error ? '--' : (i.profitRatio > 0 ? '+' : '') + i.profitRatio.toFixed(2) + '%'}</td>\`;
                }

                tbodyHtml += \`
                <tr class="hover:bg-slate-800/60 transition-colors \${i.error ? 'opacity-40' : ''}">
                    <td class="p-4 align-middle">
                        <div class="text-blue-400 font-bold whitespace-nowrap">\${i.code}</div>
                        <div class="text-slate-300 whitespace-nowrap flex items-center gap-1">
                            \${i.name} 
                            <span class="text-[10px] text-slate-600 opacity-50 font-normal cursor-default select-none">\${i.provider || ''}</span>
                        </div>
                    </td>
                    <td class="p-4 text-slate-400 font-mono whitespace-nowrap align-middle">\${i.date} \${i.time}</td>
                    \${rowInnerHtml}
                    <td class="p-4 text-center text-[10px] font-bold align-middle">\${statusTag}</td>
                </tr>
                \`;
            });

            const groupHtml = \`
                <div class="card overflow-hidden shadow-xl animate-row border border-slate-700 w-full">
                    <div class="group-header bg-slate-800 p-4 border-b border-slate-700 flex flex-col lg:flex-row justify-between items-start lg:items-center gap-4" onclick="toggleAccordion('body-\${groupId}')">
                        <div class="flex items-center gap-3">
                            <i class="fa-solid fa-chevron-down chevron-icon text-slate-400"></i>
                            <span class="bg-indigo-600/30 text-indigo-300 text-xs px-2 py-1 rounded border border-indigo-500/30 font-bold truncate max-w-[200px]" title="\${strategyName}">
                                \${strategyName}
                            </span>
                            \${totalValidCount < list.length ? \`<span class="text-[10px] bg-red-900/40 text-red-400 px-2 py-0.5 rounded border border-red-800/50">屏蔽 \${list.length - totalValidCount} 支无数据</span>\` : ''}
                        </div>
                        \${mode4HeaderHtml}
                    </div>
                  
                    <div id="body-\${groupId}" class="strategy-body hidden overflow-x-auto bg-[#172033]">
                        <table class="w-full text-xs text-left">
                            <thead class="text-slate-400 bg-slate-900/50 uppercase">
                                <tr>
                                    <th class="p-4 font-medium whitespace-nowrap">股票信息</th>
                                    <th class="p-4 font-medium whitespace-nowrap">预警时间</th>
                                    \${theadHtml}
                                    <th class="p-4 font-medium text-center whitespace-nowrap">状态</th>
                                </tr>
                            </thead>
                            <tbody class="divide-y divide-slate-800/50">
                                \${tbodyHtml}
                            </tbody>
                        </table>
                    </div>
                </div>
            \`;
            container.insertAdjacentHTML('beforeend', groupHtml);
          
            list.strategyTotalProfitRatio = strategyTotalProfitRatio;
            list.validCount = totalValidCount;
        }

        document.getElementById('screenshotBtn').addEventListener('click', async function() {
            const btn = this;
            const originalHTML = btn.innerHTML;
            const resultsDiv = document.getElementById('results');
          
            btn.innerHTML = '<i class="fa-solid fa-spinner fa-spin"></i> 生成图中...';
            btn.disabled = true;

            try {
                const canvas = await html2canvas(resultsDiv, {
                    backgroundColor: '#0f172a',
                    scale: 3, 
                    useCORS: true, 
                    logging: false, 
                    allowTaint: true
                });
              
                const imgData = canvas.toDataURL('image/png', 1.0);
                const link = document.createElement('a');
                link.href = imgData;
                link.download = getDynamicFileName('png');
                link.click();
            } catch (err) {
                alert("生成图片失败: " + err.message);
            } finally {
                btn.innerHTML = originalHTML;
                btn.disabled = false;
            }
        });

        document.getElementById('exportBtn').onclick = () => {
            let csv = "";
          
            finalData.forEach(group => {
                const timeMode = group.timeMode;
                const maxD = timeMode === 'mode4' ? Math.max(1, ...group.items.filter(i=>!i.error).map(s=>s.daysAvailable||1)) : 1;
              
                if (timeMode === 'mode4') {
                    csv += "\\ufeff预警时间,股票代码,股票名称,文档预警价,T+0取值日期,T+0收盘价,T+0单日盈亏";
                    if (maxD >= 2) csv += ",T+1取值日期,T+1收盘价,T+1单日盈亏";
                    if (maxD >= 3) csv += ",T+2取值日期,T+2收盘价,T+2单日盈亏";
                    csv += ",累计总盈亏,状态,策略名称\\n";
                } else {
                    csv += "\\ufeff预警时间,股票代码,股票名称,文档买入基准,结算收盘价,取价日期,单只盈亏比,状态,策略名称\\n";
                }

                group.items.forEach(s => {
                    const status = s.error ? "未收录" : (s.isWin ? "盈利" : s.isTie ? "平盘" : "亏损");
                  
                    if (timeMode === 'mode4') {
                        csv += \`"\${s.date} \${s.time}","\${s.code}","\${s.name}",\${s.price.toFixed(2)},\`;
                        csv += \`"\${s.error ? '--' : s.d1Date}",\${s.error ? 0 : s.d1Close.toFixed(2)},\${s.error ? 0 : s.d1Profit.toFixed(2)}%,\`;
                        if (maxD >= 2) csv += \`"\${s.d2Date||'--'}",\${s.d2Close ? s.d2Close.toFixed(2) : '--'},\${s.d2Profit ? s.d2Profit.toFixed(2) + '%' : '--'},\`;
                        if (maxD >= 3) csv += \`"\${s.d3Date||'--'}",\${s.d3Close ? s.d3Close.toFixed(2) : '--'},\${s.d3Profit ? s.d3Profit.toFixed(2) + '%' : '--'},\`;
                        csv += \`\${s.error ? 0 : s.profitRatio.toFixed(2)}%,"\${status}","\${group.strategy}"\\n\`;
                    } else {
                        const mDate = s.error ? "--" : s.matchedDate;
                        csv += \`"\${s.date} \${s.time}","\${s.code}","\${s.name}",\${s.price.toFixed(2)},\${s.error ? 0 : s.closePrice.toFixed(2)},"\${mDate}",\${s.error ? 0 : s.profitRatio.toFixed(2)}%,"\${status}","\${group.strategy}"\\n\`;
                    }
                });
              
                csv += \`"统计信息","有效股票数量:\${group.items.validCount}",,,,,"策略总盈亏:",\${group.items.strategyTotalProfitRatio}%,,"\${group.strategy} 汇总"\\n\\n\`;
            });

            const blob = new Blob([csv], { type: 'text/csv;charset=utf-8;' });
            const url = URL.createObjectURL(blob);
            const link = document.createElement("a");
            link.href = url;
            link.download = getDynamicFileName('csv');
            document.body.appendChild(link);
            link.click();
            document.body.removeChild(link);
        };
    </script>
</body>
</html>
    `;
    return new Response(html, { headers: { "Content-Type": "text/html;charset=UTF-8" } });
  }
};

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export default {
  async fetch(request) {
    const url = new URL(request.url);

    // ==========================================
    // 代理路由：保持 3 级容错分发不变
    // ==========================================
    if (url.pathname === "/api/kline") {
      const code = url.searchParams.get("code");
      const prefix = url.searchParams.get("prefix");
      const provider = url.searchParams.get("provider");
    
      let targetUrl = "";
    
      if (provider === "em") {
          const secid = (prefix === "sh" ? "1." : "0.") + code;
          targetUrl = `https://push2his.eastmoney.com/api/qt/stock/kline/get?secid=${secid}&klt=101&fqt=1&end=20500000&lmt=320&fields1=f1,f2,f3,f4,f5,f6&fields2=f51,f52,f53,f54,f55,f56,f57,f58,f59,f60,f61`;
      } else if (provider === "sina") {
          targetUrl = `https://quotes.sina.cn/cn/api/json_v2.php/CN_MarketData.getKLineData?symbol=${prefix}${code}&scale=240&ma=no&datalen=320`;
      } else {
          targetUrl = `https://web.ifzq.gtimg.cn/appstock/app/fqkline/get?param=${prefix}${code},day,,,320,qfq`;
      }
    
      try {
        const fetchRes = await fetch(targetUrl, {
            headers: { "User-Agent": "Mozilla/5.0" }
        });
        const data = await fetchRes.arrayBuffer();
      
        return new Response(data, {
          headers: {
            "Content-Type": "application/json;charset=UTF-8",
            "Access-Control-Allow-Origin": "*",
          },
        });
      } catch (e) {
        return new Response(JSON.stringify({ error: e.message }), { status: 500, headers: { "Access-Control-Allow-Origin": "*" } });
      }
    }

    // ==========================================
    // 前端 HTML 界面
    // ==========================================
    const html = `
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>量化策略回测终端</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css" rel="stylesheet">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/html2canvas/1.4.1/html2canvas.min.js"></script>
    <style>
        :root { --up: #ef4444; --down: #22c55e; --bg-main: #0f172a; --bg-card: #1e293b; }
        body { background-color: var(--bg-main); color: #f1f5f9; font-family: 'Inter', system-ui, sans-serif; }
        .card { background: var(--bg-card); border: 1px solid #334155; border-radius: 1rem; }
        .input-dark { background: #0f172a; border: 1px solid #475569; color: #38bdf8; font-weight: 700; padding: 0.5rem; border-radius: 0.5rem; color-scheme: dark; transition: all 0.2s ease;}
        .input-dark:focus { border-color: #3b82f6; outline: none; box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3); }
        .btn-primary { background: #2563eb; transition: all 0.2s; }
        .btn-primary:hover { background: #3b82f6; transform: translateY(-1px); }
        .btn-primary:disabled { background: #64748b; cursor: not-allowed; }
        .btn-warning { background: #ea580c; transition: all 0.2s; }
        .btn-warning:hover { background: #f97316; transform: translateY(-1px); }
        .radio-custom:checked + div { border-color: #3b82f6; background: rgba(59, 130, 246, 0.1); }
        ::-webkit-scrollbar { width: 6px; height: 6px; }
        ::-webkit-scrollbar-thumb { background: #475569; border-radius: 10px; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
        .animate-row { animation: fadeIn 0.3s ease-out forwards; }
        .group-header { cursor: pointer; user-select: none; transition: background-color 0.2s; }
        .group-header:hover { background-color: #334155; }
        .chevron-icon { transition: transform 0.3s ease; }
        .group-open .chevron-icon { transform: rotate(180deg); }
    </style>
</head>
<body class="min-h-screen p-4 md:p-8">
    <div class="max-w-[1400px] mx-auto space-y-6">
      
        <div class="card p-6 shadow-2xl w-full">
            <div class="flex flex-wrap items-center justify-between gap-4 border-b border-slate-700 pb-4">
                <div class="flex items-center gap-4">
                    <div class="bg-blue-600 p-4 rounded-xl shadow-[0_0_15px_rgba(37,99,235,0.6)]"><i class="fa-solid fa-chart-line text-2xl text-white"></i></div>
                    <div class="flex flex-col gap-2">
                        <h1 class="text-2xl font-bold tracking-tight text-white flex items-center gap-3 flex-wrap">
                            策略预警回测终端
                            <span class="bg-blue-600/90 hover:bg-blue-500 transition-colors text-white text-sm px-3 py-1 rounded-md shadow-[0_0_12px_rgba(37,99,235,0.8)] font-bold tracking-widest flex items-center gap-1.5 border border-blue-400 cursor-default">
                                <i class="fa-brands fa-qq text-lg"></i> 股票QQ交流群: 643618300
                            </span>
                        </h1>
                    </div>
                </div>
                <div class="flex gap-3">
                    <input type="file" id="fileInput" class="hidden" accept=".txt">
                    <button id="importBtn" onclick="document.getElementById('fileInput').click()" class="bg-slate-700 hover:bg-slate-600 px-5 py-2.5 rounded-lg border border-slate-500 transition-colors font-medium shadow-md">
                        <i class="fa-solid fa-file-import mr-2"></i>上传数据 (TXT)
                    </button>
                    <button id="runBtn" disabled class="btn-primary px-6 py-2.5 rounded-lg font-bold shadow-lg shadow-blue-900/50">
                        <i class="fa-solid fa-play mr-2"></i>开始回测
                    </button>
                </div>
            </div>

            <div class="grid grid-cols-1 md:grid-cols-4 gap-6 pt-6">
                <div class="space-y-3">
                    <h3 class="text-sm font-bold text-slate-300 border-l-2 border-blue-500 pl-2">查询与筛选</h3>
                    <div class="flex items-center justify-between">
                        <label class="text-xs text-slate-400">数量 (空/0查全部):</label>
                        <input type="number" id="limitCount" placeholder="全部" min="0" class="input-dark w-24 text-center text-sm shadow-inner">
                    </div>
                    <div class="flex items-center justify-between">
                        <label class="text-xs text-slate-400">预警时段 (过滤):</label>
                        <div class="flex items-center gap-1">
                            <input type="time" id="startTime" class="input-dark text-xs p-1 shadow-inner">
                            <span class="text-slate-500 font-bold">-</span>
                            <input type="time" id="endTime" class="input-dark text-xs p-1 shadow-inner">
                        </div>
                    </div>
                </div>

                <div class="md:col-span-3 space-y-3">
                    <h3 class="text-sm font-bold text-slate-300 border-l-2 border-purple-500 pl-2">结算价提取基准</h3>
                    <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-3">
                        <label class="cursor-pointer relative">
                            <input type="radio" name="timeMode" value="mode1" checked class="peer hidden radio-custom">
                            <div class="border border-slate-600 rounded-lg p-3 hover:border-blue-400 transition-colors h-full flex flex-col justify-center bg-slate-800/50 shadow-inner min-h-[72px]">
                                <div class="font-bold text-sm text-white mb-1">① 预警当日</div>
                                <div class="text-[10px] text-slate-400 leading-tight">提取预警当天的收盘价</div>
                            </div>
                        </label>
                        <label class="cursor-pointer relative">
                            <input type="radio" name="timeMode" value="mode2" class="peer hidden radio-custom">
                            <div class="border border-slate-600 rounded-lg p-3 hover:border-blue-400 transition-colors h-full flex flex-col justify-center bg-slate-800/50 shadow-inner min-h-[72px]">
                                <div class="font-bold text-sm text-white mb-1">② 最新实时</div>
                                <div class="text-[10px] text-slate-400 leading-tight">提取股票当下的最新价</div>
                            </div>
                        </label>
                        <label class="cursor-pointer relative">
                            <input type="radio" name="timeMode" value="mode3" class="peer hidden radio-custom">
                            <div class="border border-slate-600 rounded-lg p-3 hover:border-blue-400 transition-colors h-full flex flex-col justify-center bg-slate-800/50 shadow-inner min-h-[72px]">
                                <div class="font-bold text-sm text-white mb-1">③ 单日偏移</div>
                                <div id="customDaysUi" class="flex gap-2 opacity-30 pointer-events-none transition-opacity">
                                    <div class="flex items-center gap-1">
                                        <span class="text-[10px]">向后偏移</span>
                                        <input type="number" id="nextDays" value="1" min="1" max="20" class="input-dark w-12 p-1 text-center text-xs">
                                        <span class="text-[10px]">个交易日</span>
                                    </div>
                                </div>
                            </div>
                        </label>
                        <label class="cursor-pointer relative">
                            <input type="radio" name="timeMode" value="mode4" class="peer hidden radio-custom">
                            <div class="border border-purple-600 rounded-lg p-3 hover:border-purple-400 transition-colors h-full flex flex-col justify-center bg-purple-900/20 shadow-inner min-h-[72px]">
                                <div class="font-bold text-sm text-purple-300 mb-1">④ 连续七日追踪</div>
                                <div class="text-[10px] text-slate-400 leading-tight">T+0至T+6每日独立涨跌</div>
                            </div>
                        </label>
                    </div>
                </div>
            </div>
        </div>

        <div id="progressBox" class="hidden card p-6 border border-blue-900 shadow-[0_0_15px_rgba(59,130,246,0.1)] w-full">
            <div class="flex justify-between items-center text-xs mb-2 text-blue-300">
                <div class="flex items-center gap-2">
                    <span id="progressText" class="font-medium">初始化引擎中...</span>
                    <span id="sourceBadge" class="hidden px-1.5 py-0.5 rounded-[4px] text-[10px] font-black text-white shadow-md transition-all duration-200"></span>
                </div>
                <span id="progressPercent" class="font-mono font-bold">0%</span>
            </div>
            <div class="w-full bg-slate-800 rounded-full h-2">
                <div id="progressBar" class="bg-gradient-to-r from-blue-600 to-blue-400 h-2 rounded-full transition-all duration-300 shadow-[0_0_10px_rgba(59,130,246,0.8)]" style="width: 0%"></div>
            </div>
        </div>

        <div id="results" class="space-y-6 pb-10 w-full">
            <div class="text-center py-20 text-slate-600 border-2 border-dashed border-slate-700 rounded-2xl bg-slate-800/50">
                <i class="fa-solid fa-inbox text-5xl mb-4 opacity-50"></i>
                <p class="text-sm">尚未导入数据。请上传包含预警信息的 TXT 文件。</p>
            </div>
        </div>
    </div>

    <div id="actionButtons" class="hidden fixed bottom-8 right-8 z-50 flex flex-col gap-3">
        <button id="screenshotBtn" class="bg-indigo-600 hover:bg-indigo-500 text-white px-6 py-3 rounded-full shadow-[0_10px_25px_rgba(79,70,229,0.4)] transition-all transform hover:scale-105 font-bold flex items-center justify-center gap-2">
            <i class="fa-solid fa-camera"></i> 保存长图
        </button>
        <button id="exportBtn" class="bg-emerald-600 hover:bg-emerald-500 text-white px-6 py-3 rounded-full shadow-[0_10px_25px_rgba(16,185,129,0.4)] transition-all transform hover:scale-105 font-bold flex items-center justify-center gap-2">
            <i class="fa-solid fa-file-excel"></i> 导出 CSV
        </button>
    </div>

    <script>
        const API_URL = "/api/kline"; 
      
        let rawContent = "";
        let finalData = []; 
        let globalRunId = 0; 
        let currentRunMode = "";

        function getDynamicFileName(extension) {
            const limit = document.getElementById('limitCount').value;
            const limitStr = (!limit || parseInt(limit) === 0) ? "全部" : limit + "只";
            const st = document.getElementById('startTime').value || "09:30";
            const et = document.getElementById('endTime').value || "15:00";
            const timeStr = st.replace(':', '') + "-" + et.replace(':', '');
            let modeStr = "";
            if (currentRunMode === 'mode1') modeStr = "当日";
            else if (currentRunMode === 'mode2') modeStr = "实时";
            else if (currentRunMode === 'mode3') modeStr = "偏移";
            else if (currentRunMode === 'mode4') modeStr = "连续追踪";
          
            const dateStr = new Date().toLocaleDateString().replace(/\\//g, '');
            return \`量化复盘_[\${limitStr}]_[\${timeStr}]_[\${modeStr}]_\${dateStr}.\${extension}\`;
        }

        document.querySelectorAll('input[name="timeMode"]').forEach(radio => {
            radio.addEventListener('change', (e) => {
                const customUi = document.getElementById('customDaysUi');
                if (e.target.value === 'mode3') customUi.classList.remove('opacity-30', 'pointer-events-none');
                else customUi.classList.add('opacity-30', 'pointer-events-none');
            });
        });

        document.getElementById('fileInput').addEventListener('change', function(e) {
            const file = e.target.files[0];
            const reader = new FileReader();
            reader.onload = function(event) {
                const uint8 = new Uint8Array(event.target.result);
                rawContent = new TextDecoder('gb18030').decode(uint8);
                document.getElementById('runBtn').disabled = false;
                document.getElementById('importBtn').innerHTML = '<i class="fa-solid fa-check mr-2 text-emerald-400"></i>文件已就绪 (' + file.name + ')';
            };
            reader.readAsArrayBuffer(file);
        });

        const delay = ms => new Promise(res => setTimeout(res, ms));

        document.getElementById('runBtn').addEventListener('click', async function() {
            globalRunId++;
            const currentRunId = globalRunId; 

            const resultsDiv = document.getElementById('results');
            const progressBox = document.getElementById('progressBox');
            const runBtn = this;
          
            resultsDiv.innerHTML = "";
            finalData = [];
            progressBox.classList.remove('hidden');
            document.getElementById('actionButtons').classList.add('hidden');

            runBtn.innerHTML = '<i class="fa-solid fa-rotate-right fa-spin mr-2"></i>中断重试';
            runBtn.classList.remove('btn-primary');
            runBtn.classList.add('btn-warning');

            const limit = parseInt(document.getElementById('limitCount').value) || 999999;
            const startTime = document.getElementById('startTime').value;
            const endTime = document.getElementById('endTime').value;
            const timeMode = document.querySelector('input[name="timeMode"]:checked').value;
            currentRunMode = timeMode;
            const nextDays = parseInt(document.getElementById('nextDays').value) || 0;

            const lines = rawContent.split(/\\r?\\n/);
            let strategyMap = new Map();

            lines.forEach(line => {
                const rawParts = line.trim().split(/\\t|\\s{2,}/);
                const parts = rawParts.filter(p => p.trim() !== '');

                if (parts.length < 5) return;

                const code = parts[0].trim();
                const name = parts[1].trim(); 

                let dateIdx = -1;
                for(let j = 2; j < parts.length; j++) {
                    if(parts[j].match(/^\\d{4}[-/]\\d{1,2}[-/]\\d{1,2}/)) {
                        dateIdx = j;
                        break;
                    }
                }
                if (dateIdx === -1) return;

                let dateTimeStr = parts[dateIdx].trim();
                let date, time, priceIdx;

                if (dateTimeStr.includes(' ')) {
                    let dtParts = dateTimeStr.split(/\\s+/);
                    date = dtParts[0];
                    time = dtParts[1] || "15:00"; 
                    priceIdx = dateIdx + 1;
                } else {
                    date = parts[dateIdx].trim();
                    time = parts[dateIdx+1].trim();
                    priceIdx = dateIdx + 2;
                }

                const price = parseFloat(parts[priceIdx]); 
                if(isNaN(price)) return;

                const strategy = parts[parts.length - 1].trim(); 

                if (startTime && time < startTime) return;
                if (endTime && time > endTime) return;

                if (!strategyMap.has(strategy)) strategyMap.set(strategy, []);
                strategyMap.get(strategy).push({ code, name, date, time, price, strategy });
            });

            const strategies = Array.from(strategyMap.keys());
            if(strategies.length === 0) {
                alert("未解析到符合条件的数据，请检查格式或时间过滤段！");
                resetButton(runBtn);
                progressBox.classList.add('hidden');
                return;
            }

            let processedCount = 0;
            const totalToProcess = Array.from(strategyMap.values()).reduce((sum, arr) => sum + Math.min(arr.length, limit), 0);
            let groupIndex = 0;

            for (const sName of strategies) {
                if (currentRunId !== globalRunId) return;

                let group = strategyMap.get(sName);
                group.sort((a, b) => (a.date + a.time).localeCompare(b.date + b.time));
                group = group.slice(0, limit);
                const processedGroup = [];

                for (let i = 0; i < group.length; i += 5) {
                    if (currentRunId !== globalRunId) return; 
                  
                    const chunk = group.slice(i, i + 5);
                    const chunkRes = await Promise.all(chunk.map(async item => {
                        const result = await fetchAndCalculate(item, timeMode, nextDays);
                        processedCount++;
                        if (currentRunId === globalRunId) {
                            updateProgress(processedCount, totalToProcess, \`查询分析中 [\${sName}]: \${item.name}\`, result.provider);
                        }
                        return result;
                    }));
                  
                    if (currentRunId !== globalRunId) return; 
                    processedGroup.push(...chunkRes);
                    await delay(50);
                }

                if (currentRunId !== globalRunId) return; 
                renderStrategyGroup(sName, processedGroup, groupIndex++, timeMode);
                finalData.push({ strategy: sName, items: processedGroup, timeMode });
            }

            if (currentRunId === globalRunId) {
                resetButton(runBtn);
                updateProgress(100, 100, "分析计算完成！");
                document.getElementById('actionButtons').classList.remove('hidden');
            }
        });

        function resetButton(btn) {
            btn.innerHTML = '<i class="fa-solid fa-play mr-2"></i>开始回测';
            btn.classList.remove('btn-warning');
            btn.classList.add('btn-primary');
        }

        function updateProgress(cur, total, text, provider) {
            const p = total === 0 ? 100 : Math.floor((cur / total) * 100);
            document.getElementById('progressBar').style.width = p + "%";
            document.getElementById('progressPercent').innerText = p + "%";
            document.getElementById('progressText').innerText = text;

            const badge = document.getElementById('sourceBadge');
            if (p >= 100) {
                badge.classList.add('hidden');
            } else if (provider && provider !== '无') {
                badge.classList.remove('hidden');
                badge.innerText = provider;
                badge.className = "px-1.5 py-0.5 rounded-[4px] text-[10px] font-black text-white shadow-md transition-colors ";
                if (provider === '东') badge.className += "bg-red-500/80";
                else if (provider === '腾') badge.className += "bg-blue-500/80";
                else if (provider === '新') badge.className += "bg-yellow-600/80";
            }
        }

        const toYYYYMMDD = (dStr) => {
            const matches = String(dStr).match(/(\\d{4})[-/]?(\\d{1,2})[-/]?(\\d{1,2})/);
            if (matches) {
                return matches[1] + matches[2].padStart(2, '0') + matches[3].padStart(2, '0');
            }
            return String(dStr).replace(/\\D/g, '');
        };

        async function fetchAndCalculate(stock, mode, next) {
            const getPrefix = (c) => {
                if (c.startsWith('60') || c.startsWith('68')) return 'sh';
                if (c.startsWith('00') || c.startsWith('30')) return 'sz';
                if (c.startsWith('8') || c.startsWith('43') || c.startsWith('92') || c.startsWith('87')) return 'bj';
                return 'sz'; 
            };
            const prefix = getPrefix(stock.code);
            const fullCode = prefix + stock.code;
          
            const fetchEM = async () => {
                const res = await fetch(\`\${API_URL}?code=\${stock.code}&prefix=\${prefix}&provider=em&_=\${Date.now()}\`);
                const json = await res.json();
                if (json && json.data && json.data.klines && json.data.klines.length > 0) {
                    const kData = json.data.klines.map(line => {
                        const parts = line.split(',');
                        return [parts[0], parts[1], parts[2], parts[3], parts[4], parts[5]];
                    });
                    return { kData, provider: '东' };
                }
                throw new Error("EM None");
            };

            const fetchTX = async () => {
                if (prefix === 'bj') throw new Error("TX skip BJ"); 
                const res = await fetch(\`\${API_URL}?code=\${stock.code}&prefix=\${prefix}&provider=tx&_=\${Date.now()}\`);
                const json = await res.json();
                let kData = json.data[fullCode]?.qfqday || json.data[fullCode]?.day;
                if (kData && kData.length > 0) {
                    const qtData = json.data[fullCode].qt?.[fullCode];
                    if (qtData) {
                        const qtDateStr = qtData[30].substring(0, 8); 
                        const formattedQtDate = qtDateStr.substring(0,4) + "-" + qtDateStr.substring(4,6) + "-" + qtDateStr.substring(6,8);
                        const currentPrice = parseFloat(qtData[3]); 
                        if (kData[kData.length - 1][0] !== formattedQtDate && currentPrice > 0) {
                            kData.push([formattedQtDate, qtData[5], qtData[3], qtData[33], qtData[34], qtData[36]]);
                        }
                    }
                    return { kData, provider: '腾' };
                }
                throw new Error("TX None");
            };

            const fetchSina = async () => {
                const res = await fetch(\`\${API_URL}?code=\${stock.code}&prefix=\${prefix}&provider=sina&_=\${Date.now()}\`);
                const json = await res.json();
                if (json && json.length > 0) {
                    const kData = json.map(item => [item.day.split(' ')[0], item.open, item.close, item.high, item.low, item.volume]);
                    return { kData, provider: '新' };
                }
                throw new Error("Sina None");
            };

            const now = new Date();
            const utc = now.getTime() + (now.getTimezoneOffset() * 60000);
            const bjTime = new Date(utc + (3600000 * 8));
            const h = bjTime.getHours();
            const m = bjTime.getMinutes();
            const timeVal = h * 100 + m;
          
            const isTradingTime = timeVal >= 915 && timeVal < 1500;
          
            let fetchResult = null;

            try {
                if (isTradingTime) {
                    try { fetchResult = await fetchEM(); }
                    catch (e1) {
                        try { fetchResult = await fetchTX(); }
                        catch (e2) { fetchResult = await fetchSina(); }
                    }
                } else {
                    fetchResult = await new Promise((resolve, reject) => {
                        let errCount = 0;
                        const checkReject = () => { errCount++; if (errCount === 3) reject(new Error("All APIs failed")); };
                        fetchEM().then(resolve).catch(checkReject);
                        fetchTX().then(resolve).catch(checkReject);
                        fetchSina().then(resolve).catch(checkReject);
                    });
                }

                const { kData, provider } = fetchResult;
                const normBaseDate = toYYYYMMDD(stock.date);
              
                let baseIdx = -1;
                if (mode !== 'mode2') {
                    for (let i = 0; i < kData.length; i++) {
                        if (toYYYYMMDD(kData[i][0]) === normBaseDate) {
                            baseIdx = i; break;
                        }
                    }
                    if (baseIdx === -1) {
                        for (let i = kData.length - 1; i >= 0; i--) {
                            if (toYYYYMMDD(kData[i][0]) < normBaseDate) {
                                baseIdx = i; break;
                            }
                        }
                    }
                    if (baseIdx === -1) throw new Error("Date Out of Range");
                }

                const alertPrice = stock.price; 

                if (mode === 'mode4') {
                    const day1 = kData[baseIdx];
                    const day2 = baseIdx + 1 < kData.length ? kData[baseIdx + 1] : null;
                    const day3 = baseIdx + 2 < kData.length ? kData[baseIdx + 2] : null;
                    const day4 = baseIdx + 3 < kData.length ? kData[baseIdx + 3] : null;
                    const day5 = baseIdx + 4 < kData.length ? kData[baseIdx + 4] : null;
                    const day6 = baseIdx + 5 < kData.length ? kData[baseIdx + 5] : null;
                    const day7 = baseIdx + 6 < kData.length ? kData[baseIdx + 6] : null;

                    const d1Close = parseFloat(day1[2]);
                    const d1Profit = ((d1Close - alertPrice) / alertPrice) * 100;

                    let d2Close = null, d2Profit = null;
                    if (day2) { d2Close = parseFloat(day2[2]); d2Profit = ((d2Close - d1Close) / d1Close) * 100; }

                    let d3Close = null, d3Profit = null;
                    if (day3) { d3Close = parseFloat(day3[2]); d3Profit = ((d3Close - d2Close) / d2Close) * 100; }

                    let d4Close = null, d4Profit = null;
                    if (day4) { d4Close = parseFloat(day4[2]); d4Profit = ((d4Close - d3Close) / d3Close) * 100; }

                    let d5Close = null, d5Profit = null;
                    if (day5) { d5Close = parseFloat(day5[2]); d5Profit = ((d5Close - d4Close) / d4Close) * 100; }

                    let d6Close = null, d6Profit = null;
                    if (day6) { d6Close = parseFloat(day6[2]); d6Profit = ((d6Close - d5Close) / d5Close) * 100; }

                    let d7Close = null, d7Profit = null;
                    if (day7) { d7Close = parseFloat(day7[2]); d7Profit = ((d7Close - d6Close) / d6Close) * 100; }

                    const finalClose = d7Close || d6Close || d5Close || d4Close || d3Close || d2Close || d1Close;
                    const totalProfit = ((finalClose - alertPrice) / alertPrice) * 100;
                    const daysAvailable = 1 + (day2 ? 1 : 0) + (day3 ? 1 : 0) + (day4 ? 1 : 0) + (day5 ? 1 : 0) + (day6 ? 1 : 0) + (day7 ? 1 : 0);

                    return { 
                        ...stock, 
                        d1Close, d1Profit, d1Date: day1[0].substring(5),
                        d2Close, d2Profit, d2Date: day2 ? day2[0].substring(5) : null,
                        d3Close, d3Profit, d3Date: day3 ? day3[0].substring(5) : null,
                        d4Close, d4Profit, d4Date: day4 ? day4[0].substring(5) : null,
                        d5Close, d5Profit, d5Date: day5 ? day5[0].substring(5) : null,
                        d6Close, d6Profit, d6Date: day6 ? day6[0].substring(5) : null,
                        d7Close, d7Profit, d7Date: day7 ? day7[0].substring(5) : null,
                        closePrice: finalClose, 
                        profitRatio: totalProfit, 
                        isWin: totalProfit > 0,
                        isTie: totalProfit === 0,
                        matchedDate: (day7 || day6 || day5 || day4 || day3 || day2 || day1)[0].substring(5),
                        daysAvailable: daysAvailable,
                        error: false,
                        provider: provider
                    };
                }
              
                let targetIdx = -1;
                if (mode === 'mode2') targetIdx = kData.length - 1;
                else if (mode === 'mode1') targetIdx = baseIdx;
                else if (mode === 'mode3') {
                    targetIdx = baseIdx + next;
                    if (targetIdx >= kData.length) throw new Error("Target Future Date Not Exists");
                }
              
                if (targetIdx < 0) targetIdx = 0;
                const closePrice = parseFloat(kData[targetIdx][2]);
                const matchedDateStr = kData[targetIdx][0].substring(5); 
              
                const profitDiff = closePrice - alertPrice;
                const profitRatio = (profitDiff / alertPrice) * 100;

                return { 
                    ...stock, 
                    closePrice: closePrice, 
                    profitRatio: profitRatio, 
                    isWin: profitDiff > 0,
                    isTie: profitDiff === 0,
                    matchedDate: matchedDateStr,
                    error: false,
                    provider: provider
                };
            } catch (e) {
                return { ...stock, closePrice: stock.price, profitRatio: 0, isWin: false, isTie: false, error: true, daysAvailable: 0, provider: '无' };
            }
        }

        window.toggleAccordion = function(id) {
            const allBodies = document.querySelectorAll('.strategy-body');
            allBodies.forEach(body => {
                if (body.id === id) {
                    body.classList.toggle('hidden');
                    body.previousElementSibling.classList.toggle('group-open');
                } else {
                    body.classList.add('hidden'); 
                    body.previousElementSibling.classList.remove('group-open');
                }
            });
        };

        function renderStrategyGroup(strategyName, list, groupId, timeMode) {
            const container = document.getElementById('results');
            const validStocks = list.filter(i => !i.error);
            const totalValidCount = validStocks.length;
          
            let totalProfitRatioSum = 0;
            let winCount = 0;
          
            let sumD1 = 0, countD1 = 0;
            let sumD2 = 0, countD2 = 0;
            let sumD3 = 0, countD3 = 0;
            let sumD4 = 0, countD4 = 0;
            let sumD5 = 0, countD5 = 0;
            let sumD6 = 0, countD6 = 0;
            let sumD7 = 0, countD7 = 0;
          
            validStocks.forEach(i => {
                totalProfitRatioSum += i.profitRatio;
                if(i.isWin) winCount++;
              
                if (timeMode === 'mode4') {
                    if (i.d1Profit !== null && i.d1Profit !== undefined) { sumD1 += i.d1Profit; countD1++; }
                    if (i.d2Profit !== null && i.d2Profit !== undefined) { sumD2 += i.d2Profit; countD2++; }
                    if (i.d3Profit !== null && i.d3Profit !== undefined) { sumD3 += i.d3Profit; countD3++; }
                    if (i.d4Profit !== null && i.d4Profit !== undefined) { sumD4 += i.d4Profit; countD4++; }
                    if (i.d5Profit !== null && i.d5Profit !== undefined) { sumD5 += i.d5Profit; countD5++; }
                    if (i.d6Profit !== null && i.d6Profit !== undefined) { sumD6 += i.d6Profit; countD6++; }
                    if (i.d7Profit !== null && i.d7Profit !== undefined) { sumD7 += i.d7Profit; countD7++; }
                }
            });
          
            const strategyTotalProfitRatio = totalValidCount > 0 ? (totalProfitRatioSum / totalValidCount).toFixed(2) : "0.00";
            const winRate = totalValidCount > 0 ? ((winCount / totalValidCount) * 100).toFixed(1) : "0.0";
          
            const profitColorClass = strategyTotalProfitRatio > 0 ? 'text-red-500' : strategyTotalProfitRatio < 0 ? 'text-green-500' : 'text-slate-300';
            const profitSign = strategyTotalProfitRatio > 0 ? '+' : '';

            const maxDays = totalValidCount > 0 ? Math.max(1, ...validStocks.map(s => s.daysAvailable || 1)) : 1;
            const refStock = validStocks[0] || {};
            const refD1 = refStock.d1Date || '--';
            const refD2 = refStock.d2Date || '--';
            const refD3 = refStock.d3Date || '--';
            const refD4 = refStock.d4Date || '--';
            const refD5 = refStock.d5Date || '--';
            const refD6 = refStock.d6Date || '--';
            const refD7 = refStock.d7Date || '--';

            let mode4HeaderHtml = '';
            let theadHtml = '';
          
            if (timeMode === 'mode4') {
                const avgD1 = countD1 > 0 ? (sumD1 / countD1).toFixed(2) : "0.00";
                const avgD2 = countD2 > 0 ? (sumD2 / countD2).toFixed(2) : "0.00";
                const avgD3 = countD3 > 0 ? (sumD3 / countD3).toFixed(2) : "0.00";
                const avgD4 = countD4 > 0 ? (sumD4 / countD4).toFixed(2) : "0.00";
                const avgD5 = countD5 > 0 ? (sumD5 / countD5).toFixed(2) : "0.00";
                const avgD6 = countD6 > 0 ? (sumD6 / countD6).toFixed(2) : "0.00";
                const avgD7 = countD7 > 0 ? (sumD7 / countD7).toFixed(2) : "0.00";
              
                mode4HeaderHtml += \`<div class="flex gap-4 sm:gap-6 text-sm items-center flex-wrap justify-end w-full lg:w-auto mt-2 lg:mt-0">\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center"><span class="text-slate-400 text-xs uppercase mb-1">有效股票</span><span class="text-white font-mono text-base font-bold">\${totalValidCount}</span></div>\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+0</span><span class="font-mono text-sm font-bold my-0.5 \${avgD1 > 0 ? 'text-red-500' : avgD1 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD1 > 0 ? '+' : ''}\${avgD1}%</span><span class="text-blue-300 text-xs">(\${refD1})</span></div>\`;
                if (maxDays >= 2) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+1</span><span class="font-mono text-sm font-bold my-0.5 \${avgD2 > 0 ? 'text-red-500' : avgD2 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD2 > 0 ? '+' : ''}\${avgD2}%</span><span class="text-blue-300 text-xs">(\${refD2})</span></div>\`;
                if (maxDays >= 3) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+2</span><span class="font-mono text-sm font-bold my-0.5 \${avgD3 > 0 ? 'text-red-500' : avgD3 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD3 > 0 ? '+' : ''}\${avgD3}%</span><span class="text-blue-300 text-xs">(\${refD3})</span></div>\`;
                if (maxDays >= 4) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+3</span><span class="font-mono text-sm font-bold my-0.5 \${avgD4 > 0 ? 'text-red-500' : avgD4 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD4 > 0 ? '+' : ''}\${avgD4}%</span><span class="text-blue-300 text-xs">(\${refD4})</span></div>\`;
                if (maxDays >= 5) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+4</span><span class="font-mono text-sm font-bold my-0.5 \${avgD5 > 0 ? 'text-red-500' : avgD5 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD5 > 0 ? '+' : ''}\${avgD5}%</span><span class="text-blue-300 text-xs">(\${refD5})</span></div>\`;
                if (maxDays >= 6) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+5</span><span class="font-mono text-sm font-bold my-0.5 \${avgD6 > 0 ? 'text-red-500' : avgD6 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD6 > 0 ? '+' : ''}\${avgD6}%</span><span class="text-blue-300 text-xs">(\${refD6})</span></div>\`;
                if (maxDays >= 7) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+6</span><span class="font-mono text-sm font-bold my-0.5 \${avgD7 > 0 ? 'text-red-500' : avgD7 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD7 > 0 ? '+' : ''}\${avgD7}%</span><span class="text-blue-300 text-xs">(\${refD7})</span></div>\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4"><span class="text-purple-400 text-xs uppercase font-bold mb-1">累计总盈亏</span><span class="\${profitColorClass} font-bold font-mono text-lg">\${profitSign}\${strategyTotalProfitRatio}%</span></div>\`;
                mode4HeaderHtml += \`</div>\`;
              
                theadHtml += \`<th class="p-4 font-medium text-right text-blue-300 whitespace-nowrap">预警价</th>\`;
                theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+0 (当日)</th>\`;
                if (maxDays >= 2) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+1 (次日)</th>\`;
                if (maxDays >= 3) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+2 (三日)</th>\`;
                if (maxDays >= 4) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+3 (四日)</th>\`;
                if (maxDays >= 5) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+4 (五日)</th>\`;
                if (maxDays >= 6) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+5 (六日)</th>\`;
                if (maxDays >= 7) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+6 (七日)</th>\`;
                theadHtml += \`<th class="p-4 font-medium text-right text-purple-300 whitespace-nowrap">累计盈亏</th>\`;
            } else {
                mode4HeaderHtml += \`<div class="flex gap-4 sm:gap-8 text-sm items-center">\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-end"><span class="text-slate-500 text-[10px] uppercase">有效股票数</span><span class="text-white font-mono font-bold">\${totalValidCount}</span></div>\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-end"><span class="text-slate-500 text-[10px] uppercase">胜率</span><span class="text-white font-mono font-bold">\${winRate}%</span></div>\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-end"><span class="text-slate-500 text-[10px] uppercase">策略总盈亏</span><span class="\${profitColorClass} font-bold font-mono text-base">\${profitSign}\${strategyTotalProfitRatio}%</span></div>\`;
                mode4HeaderHtml += \`</div>\`;
              
                theadHtml += \`<th class="p-4 font-medium text-right text-blue-300 whitespace-nowrap">文档买入价</th>\`;
                theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">结算收盘价 <span class="text-[9px] text-slate-500 normal-case tracking-normal">(取值日期)</span></th>\`;
                theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">单只盈亏比</th>\`;
            }

            let tbodyHtml = '';
            list.forEach(i => {
                const pColor = i.profitRatio > 0 ? 'text-red-500' : i.profitRatio < 0 ? 'text-green-500' : 'text-slate-400';
                const statusTag = i.error ? '<span class="px-2 py-1 rounded bg-slate-500/30 text-slate-400 border border-slate-500/50 whitespace-nowrap">未收录</span>' :
                                 i.isWin ? '<span class="px-2 py-1 rounded bg-red-500/10 text-red-500 border border-red-500/20 whitespace-nowrap">盈利</span>' : 
                                 i.isTie ? '<span class="px-2 py-1 rounded bg-slate-500/10 text-slate-400 border border-slate-500/20 whitespace-nowrap">平盘</span>' : 
                                 '<span class="px-2 py-1 rounded bg-green-500/10 text-green-500 border border-green-500/20 whitespace-nowrap">亏损</span>';
              
                let rowInnerHtml = '';
                if (timeMode === 'mode4') {
                    rowInnerHtml += \`<td class="p-4 text-right font-mono text-blue-300 font-bold whitespace-nowrap align-middle">\${i.price.toFixed(2)}</td>\`;
                  
                    if (i.error) {
                        rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 2) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 3) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 4) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 5) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 6) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 7) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                    } else {
                        const c1 = i.d1Profit > 0 ? 'text-red-500' : i.d1Profit < 0 ? 'text-green-500' : 'text-slate-300';
                        rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                            <div class="text-slate-200 text-sm">\${i.d1Close.toFixed(2)}</div>
                            <div class="font-bold text-xs \${c1} py-0.5">\${(i.d1Profit>0?'+':'')}\${i.d1Profit.toFixed(2)}%</div>
                            <div class="text-slate-400 text-xs">(\${i.d1Date})</div>
                        </td>\`;
                      
                        if (maxDays >= 2) {
                            if (i.d2Close) {
                                const c2 = i.d2Profit > 0 ? 'text-red-500' : i.d2Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d2Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c2} py-0.5">\${(i.d2Profit>0?'+':'')}\${i.d2Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d2Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }
                      
                        if (maxDays >= 3) {
                            if (i.d3Close) {
                                const c3 = i.d3Profit > 0 ? 'text-red-500' : i.d3Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d3Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c3} py-0.5">\${(i.d3Profit>0?'+':'')}\${i.d3Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d3Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }

                        if (maxDays >= 4) {
                            if (i.d4Close) {
                                const c4 = i.d4Profit > 0 ? 'text-red-500' : i.d4Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d4Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c4} py-0.5">\${(i.d4Profit>0?'+':'')}\${i.d4Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d4Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }

                        if (maxDays >= 5) {
                            if (i.d5Close) {
                                const c5 = i.d5Profit > 0 ? 'text-red-500' : i.d5Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d5Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c5} py-0.5">\${(i.d5Profit>0?'+':'')}\${i.d5Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d5Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }

                        if (maxDays >= 6) {
                            if (i.d6Close) {
                                const c6 = i.d6Profit > 0 ? 'text-red-500' : i.d6Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d6Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c6} py-0.5">\${(i.d6Profit>0?'+':'')}\${i.d6Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d6Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }

                        if (maxDays >= 7) {
                            if (i.d7Close) {
                                const c7 = i.d7Profit > 0 ? 'text-red-500' : i.d7Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d7Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c7} py-0.5">\${(i.d7Profit>0?'+':'')}\${i.d7Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d7Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }
                    }
                    rowInnerHtml += \`<td class="p-4 text-right font-mono font-bold \${pColor} text-sm whitespace-nowrap align-middle">\${i.error ? '--' : (i.profitRatio > 0 ? '+' : '') + i.profitRatio.toFixed(2) + '%'}</td>\`;
                } else {
                    rowInnerHtml += \`<td class="p-4 text-right font-mono text-blue-300 font-bold whitespace-nowrap">\${i.price.toFixed(2)}</td>\`;
                    rowInnerHtml += \`<td class="p-4 text-right font-mono text-slate-300 whitespace-nowrap">\${i.error ? '--' : \`\${i.closePrice.toFixed(2)} <br><span class="text-[10px] text-slate-500 font-bold">(\${i.matchedDate})</span>\`}</td>\`;
                    rowInnerHtml += \`<td class="p-4 text-right font-mono font-bold \${pColor} whitespace-nowrap">\${i.error ? '--' : (i.profitRatio > 0 ? '+' : '') + i.profitRatio.toFixed(2) + '%'}</td>\`;
                }

                tbodyHtml += \`
                <tr class="hover:bg-slate-800/60 transition-colors \${i.error ? 'opacity-40' : ''}">
                    <td class="p-4 align-middle">
                        <div class="text-blue-400 font-bold whitespace-nowrap">\${i.code}</div>
                        <div class="text-slate-300 whitespace-nowrap flex items-center gap-1">
                            \${i.name} 
                            <span class="text-[10px] text-slate-600 opacity-50 font-normal cursor-default select-none">\${i.provider || ''}</span>
                        </div>
                    </td>
                    <td class="p-4 text-slate-400 font-mono whitespace-nowrap align-middle">\${i.date} \${i.time}</td>
                    \${rowInnerHtml}
                    <td class="p-4 text-center text-[10px] font-bold align-middle">\${statusTag}</td>
                </tr>
                \`;
            });

            const groupHtml = \`
                <div class="card overflow-hidden shadow-xl animate-row border border-slate-700 w-full">
                    <div class="group-header bg-slate-800 p-4 border-b border-slate-700 flex flex-col lg:flex-row justify-between items-start lg:items-center gap-4" onclick="toggleAccordion('body-\${groupId}')">
                        <div class="flex items-center gap-3">
                            <i class="fa-solid fa-chevron-down chevron-icon text-slate-400"></i>
                            <span class="bg-indigo-600/30 text-indigo-300 text-xs px-2 py-1 rounded border border-indigo-500/30 font-bold truncate max-w-[200px]" title="\${strategyName}">
                                \${strategyName}
                            </span>
                            \${totalValidCount < list.length ? \`<span class="text-[10px] bg-red-900/40 text-red-400 px-2 py-0.5 rounded border border-red-800/50">屏蔽 \${list.length - totalValidCount} 支无数据</span>\` : ''}
                        </div>
                        \${mode4HeaderHtml}
                    </div>
                  
                    <div id="body-\${groupId}" class="strategy-body hidden overflow-x-auto bg-[#172033]">
                        <table class="w-full text-xs text-left">
                            <thead class="text-slate-400 bg-slate-900/50 uppercase">
                                <tr>
                                    <th class="p-4 font-medium whitespace-nowrap">股票信息</th>
                                    <th class="p-4 font-medium whitespace-nowrap">预警时间</th>
                                    \${theadHtml}
                                    <th class="p-4 font-medium text-center whitespace-nowrap">状态</th>
                                </tr>
                            </thead>
                            <tbody class="divide-y divide-slate-800/50">
                                \${tbodyHtml}
                            </tbody>
                        </table>
                    </div>
                </div>
            \`;
            container.insertAdjacentHTML('beforeend', groupHtml);
          
            list.strategyTotalProfitRatio = strategyTotalProfitRatio;
            list.validCount = totalValidCount;
        }

        document.getElementById('screenshotBtn').addEventListener('click', async function() {
            const btn = this;
            const originalHTML = btn.innerHTML;
            const resultsDiv = document.getElementById('results');
          
            btn.innerHTML = '<i class="fa-solid fa-spinner fa-spin"></i> 生成图中...';
            btn.disabled = true;

            try {
                const canvas = await html2canvas(resultsDiv, {
                    backgroundColor: '#0f172a',
                    scale: 3, 
                    useCORS: true, 
                    logging: false, 
                    allowTaint: true
                });
              
                const imgData = canvas.toDataURL('image/png', 1.0);
                const link = document.createElement('a');
                link.href = imgData;
                link.download = getDynamicFileName('png');
                link.click();
            } catch (err) {
                alert("生成图片失败: " + err.message);
            } finally {
                btn.innerHTML = originalHTML;
                btn.disabled = false;
            }
        });

        document.getElementById('exportBtn').onclick = () => {
            let csv = "";
          
            finalData.forEach(group => {
                const timeMode = group.timeMode;
                const maxD = timeMode === 'mode4' ? Math.max(1, ...group.items.filter(i=>!i.error).map(s=>s.daysAvailable||1)) : 1;
              
                if (timeMode === 'mode4') {
                    csv += "\\ufeff预警时间,股票代码,股票名称,文档预警价,T+0取值日期,T+0收盘价,T+0单日盈亏";
                    if (maxD >= 2) csv += ",T+1取值日期,T+1收盘价,T+1单日盈亏";
                    if (maxD >= 3) csv += ",T+2取值日期,T+2收盘价,T+2单日盈亏";
                    if (maxD >= 4) csv += ",T+3取值日期,T+3收盘价,T+3单日盈亏";
                    if (maxD >= 5) csv += ",T+4取值日期,T+4收盘价,T+4单日盈亏";
                    if (maxD >= 6) csv += ",T+5取值日期,T+5收盘价,T+5单日盈亏";
                    if (maxD >= 7) csv += ",T+6取值日期,T+6收盘价,T+6单日盈亏";
                    csv += ",累计总盈亏,状态,策略名称\\n";
                } else {
                    csv += "\\ufeff预警时间,股票代码,股票名称,文档买入基准,结算收盘价,取价日期,单只盈亏比,状态,策略名称\\n";
                }

                group.items.forEach(s => {
                    const status = s.error ? "未收录" : (s.isWin ? "盈利" : s.isTie ? "平盘" : "亏损");
                  
                    if (timeMode === 'mode4') {
                        csv += \`"\${s.date} \${s.time}","\${s.code}","\${s.name}",\${s.price.toFixed(2)},\`;
                        csv += \`"\${s.error ? '--' : s.d1Date}",\${s.error ? 0 : s.d1Close.toFixed(2)},\${s.error ? 0 : s.d1Profit.toFixed(2)}%,\`;
                        if (maxD >= 2) csv += \`"\${s.d2Date||'--'}",\${s.d2Close ? s.d2Close.toFixed(2) : '--'},\${s.d2Profit !== null ? s.d2Profit.toFixed(2) + '%' : '--'},\`;
                        if (maxD >= 3) csv += \`"\${s.d3Date||'--'}",\${s.d3Close ? s.d3Close.toFixed(2) : '--'},\${s.d3Profit !== null ? s.d3Profit.toFixed(2) + '%' : '--'},\`;
                        if (maxD >= 4) csv += \`"\${s.d4Date||'--'}",\${s.d4Close ? s.d4Close.toFixed(2) : '--'},\${s.d4Profit !== null ? s.d4Profit.toFixed(2) + '%' : '--'},\`;
                        if (maxD >= 5) csv += \`"\${s.d5Date||'--'}",\${s.d5Close ? s.d5Close.toFixed(2) : '--'},\${s.d5Profit !== null ? s.d5Profit.toFixed(2) + '%' : '--'},\`;
                        if (maxD >= 6) csv += \`"\${s.d6Date||'--'}",\${s.d6Close ? s.d6Close.toFixed(2) : '--'},\${s.d6Profit !== null ? s.d6Profit.toFixed(2) + '%' : '--'},\`;
                        if (maxD >= 7) csv += \`"\${s.d7Date||'--'}",\${s.d7Close ? s.d7Close.toFixed(2) : '--'},\${s.d7Profit !== null ? s.d7Profit.toFixed(2) + '%' : '--'},\`;
                        csv += \`\${s.error ? 0 : s.profitRatio.toFixed(2)}%,"\${status}","\${group.strategy}"\\n\`;
                    } else {
                        const mDate = s.error ? "--" : s.matchedDate;
                        csv += \`"\${s.date} \${s.time}","\${s.code}","\${s.name}",\${s.price.toFixed(2)},\${s.error ? 0 : s.closePrice.toFixed(2)},"\${mDate}",\${s.error ? 0 : s.profitRatio.toFixed(2)}%,"\${status}","\${group.strategy}"\\n\`;
                    }
                });
              
                csv += \`"统计信息","有效股票数量:\${group.items.validCount}",,,,,"策略总盈亏:",\${group.items.strategyTotalProfitRatio}%,,"\${group.strategy} 汇总"\\n\\n\`;
            });

            const blob = new Blob([csv], { type: 'text/csv;charset=utf-8;' });
            const url = URL.createObjectURL(blob);
            const link = document.createElement("a");
            link.href = url;
            link.download = getDynamicFileName('csv');
            document.body.appendChild(link);
            link.click();
            document.body.removeChild(link);
        };
    </script>
</body>
</html>
    `;
    return new Response(html, { headers: { "Content-Type": "text/html;charset=UTF-8" } });
  }
};

修复打赏弹窗

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export default {
  async fetch(request) {
    const url = new URL(request.url);
    // ==========================================
    // 代理路由：保持 3 级容错分发不变
    // ==========================================
    if (url.pathname === "/api/kline") {
      const code = url.searchParams.get("code");
      const prefix = url.searchParams.get("prefix");
      const provider = url.searchParams.get("provider");
    
      let targetUrl = "";
    
      if (provider === "em") {
          const secid = (prefix === "sh" ? "1." : "0.") + code;
          targetUrl = `https://push2his.eastmoney.com/api/qt/stock/kline/get?secid=${secid}&klt=101&fqt=1&end=20500000&lmt=320&fields1=f1,f2,f3,f4,f5,f6&fields2=f51,f52,f53,f54,f55,f56,f57,f58,f59,f60,f61`;
      } else if (provider === "sina") {
          targetUrl = `https://quotes.sina.cn/cn/api/json_v2.php/CN_MarketData.getKLineData?symbol=${prefix}${code}&scale=240&ma=no&datalen=320`;
      } else {
          targetUrl = `https://web.ifzq.gtimg.cn/appstock/app/fqkline/get?param=${prefix}${code},day,,,320,qfq`;
      }
    
      try {
        const fetchRes = await fetch(targetUrl, {
            headers: { "User-Agent": "Mozilla/5.0" }
        });
        const data = await fetchRes.arrayBuffer();
      
        return new Response(data, {
          headers: {
            "Content-Type": "application/json;charset=UTF-8",
            "Access-Control-Allow-Origin": "*",
          },
        });
      } catch (e) {
        return new Response(JSON.stringify({ error: e.message }), { status: 500, headers: { "Access-Control-Allow-Origin": "*" } });
      }
    }
    // ==========================================
    // 前端 HTML 界面
    // ==========================================
    const html = `
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>量化策略回测终端</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css" rel="stylesheet">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/html2canvas/1.4.1/html2canvas.min.js"></script>
    <style>
        :root { --up: #ef4444; --down: #22c55e; --bg-main: #0f172a; --bg-card: #1e293b; }
        body { background-color: var(--bg-main); color: #f1f5f9; font-family: 'Inter', system-ui, sans-serif; }
        .card { background: var(--bg-card); border: 1px solid #334155; border-radius: 1rem; }
        .input-dark { background: #0f172a; border: 1px solid #475569; color: #38bdf8; font-weight: 700; padding: 0.5rem; border-radius: 0.5rem; color-scheme: dark; transition: all 0.2s ease;}
        .input-dark:focus { border-color: #3b82f6; outline: none; box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3); }
        .btn-primary { background: #2563eb; transition: all 0.2s; }
        .btn-primary:hover { background: #3b82f6; transform: translateY(-1px); }
        .btn-primary:disabled { background: #64748b; cursor: not-allowed; }
        .btn-warning { background: #ea580c; transition: all 0.2s; }
        .btn-warning:hover { background: #f97316; transform: translateY(-1px); }
        .radio-custom:checked + div { border-color: #3b82f6; background: rgba(59, 130, 246, 0.1); }
        ::-webkit-scrollbar { width: 6px; height: 6px; }
        ::-webkit-scrollbar-thumb { background: #475569; border-radius: 10px; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
        .animate-row { animation: fadeIn 0.3s ease-out forwards; }
        .group-header { cursor: pointer; user-select: none; transition: background-color 0.2s; }
        .group-header:hover { background-color: #334155; }
        .chevron-icon { transition: transform 0.3s ease; }
        .group-open .chevron-icon { transform: rotate(180deg); }

        /* 新增：底部打赏栏样式（备案式极简布局） */
        .reward-footer-bar {
            border-top: 1px solid #334155;
            padding: 1.5rem 1rem;
            text-align: center;
        }
        .reward-footer-text {
            color: #94a3b8;
            font-size: 0.875rem;
            margin-bottom: 1rem;
            line-height: 1.5;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        .reward-footer-btns {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        .reward-footer-btn {
            padding: 0.5rem 1.25rem;
            border-radius: 0.5rem;
            font-weight: 600;
            font-size: 0.875rem;
            transition: all 0.2s ease;
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            cursor: pointer;
        }
        .reward-btn-alipay {
            background: rgba(37, 99, 235, 0.1);
            border-color: #2563eb;
            color: #3b82f6;
        }
        .reward-btn-alipay:hover {
            background: #2563eb;
            color: white;
            transform: translateY(-1px);
            box-shadow: 0 0 12px rgba(37, 99, 235, 0.4);
        }
        .reward-btn-wechat {
            background: rgba(22, 163, 74, 0.1);
            border-color: #16a34a;
            color: #22c55e;
        }
        .reward-btn-wechat:hover {
            background: #16a34a;
            color: white;
            transform: translateY(-1px);
            box-shadow: 0 0 12px rgba(22, 163, 74, 0.4);
        }

        /* 新增：打赏弹窗样式 */
        .reward-modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.8);
            z-index: 100;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 1rem;
            animation: fadeIn 0.2s ease-out;
        }
        .reward-modal-content {
            background: #1e293b;
            border: 1px solid #475569;
            border-radius: 1rem;
            padding: 1.5rem;
            max-width: 320px;
            width: 100%;
            animation: fadeIn 0.3s ease-out;
        }
        .reward-modal-title {
            text-align: center;
            font-size: 1rem;
            font-weight: 700;
            color: #f1f5f9;
            margin-bottom: 1rem;
        }
        .reward-modal-img {
            width: 100%;
            height: auto;
            border-radius: 0.5rem;
            margin-bottom: 0.75rem;
        }
        .reward-modal-tip {
            text-align: center;
            font-size: 0.75rem;
            color: #94a3b8;
        }
    </style>
</head>
<body class="min-h-screen p-4 md:p-8">
    <div class="max-w-[1400px] mx-auto space-y-6">
      
        <div class="card p-6 shadow-2xl w-full">
            <div class="flex flex-wrap items-center justify-between gap-4 border-b border-slate-700 pb-4">
                <div class="flex items-center gap-4">
                    <div class="bg-blue-600 p-4 rounded-xl shadow-[0_0_15px_rgba(37,99,235,0.6)]"><i class="fa-solid fa-chart-line text-2xl text-white"></i></div>
                    <div class="flex flex-col gap-2">
                        <h1 class="text-2xl font-bold tracking-tight text-white flex items-center gap-3 flex-wrap">
                            策略预警回测终端
                            <span class="bg-blue-600/90 hover:bg-blue-500 transition-colors text-white text-sm px-3 py-1 rounded-md shadow-[0_0_12px_rgba(37,99,235,0.8)] font-bold tracking-widest flex items-center gap-1.5 border border-blue-400 cursor-default">
                                <i class="fa-brands fa-qq text-lg"></i> 股票QQ交流群: 643618300
                            </span>
                        </h1>
                    </div>
                </div>
                <div class="flex gap-3">
                    <input type="file" id="fileInput" class="hidden" accept=".txt">
                    <button id="importBtn" onclick="document.getElementById('fileInput').click()" class="bg-slate-700 hover:bg-slate-600 px-5 py-2.5 rounded-lg border border-slate-500 transition-colors font-medium shadow-md">
                        <i class="fa-solid fa-file-import mr-2"></i>上传数据 (TXT)
                    </button>
                    <button id="runBtn" disabled class="btn-primary px-6 py-2.5 rounded-lg font-bold shadow-lg shadow-blue-900/50">
                        <i class="fa-solid fa-play mr-2"></i>开始回测
                    </button>
                </div>
            </div>
            <div class="grid grid-cols-1 md:grid-cols-4 gap-6 pt-6">
                <div class="space-y-3">
                    <h3 class="text-sm font-bold text-slate-300 border-l-2 border-blue-500 pl-2">查询与筛选</h3>
                    <div class="flex items-center justify-between">
                        <label class="text-xs text-slate-400">数量 (空/0查全部):</label>
                        <input type="number" id="limitCount" placeholder="全部" min="0" class="input-dark w-24 text-center text-sm shadow-inner">
                    </div>
                    <div class="flex items-center justify-between">
                        <label class="text-xs text-slate-400">预警时段 (过滤):</label>
                        <div class="flex items-center gap-1">
                            <input type="time" id="startTime" class="input-dark text-xs p-1 shadow-inner">
                            <span class="text-slate-500 font-bold">-</span>
                            <input type="time" id="endTime" class="input-dark text-xs p-1 shadow-inner">
                        </div>
                    </div>
                </div>
                <div class="md:col-span-3 space-y-3">
                    <h3 class="text-sm font-bold text-slate-300 border-l-2 border-purple-500 pl-2">结算价提取基准</h3>
                    <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-3">
                        <label class="cursor-pointer relative">
                            <input type="radio" name="timeMode" value="mode1" checked class="peer hidden radio-custom">
                            <div class="border border-slate-600 rounded-lg p-3 hover:border-blue-400 transition-colors h-full flex flex-col justify-center bg-slate-800/50 shadow-inner min-h-[72px]">
                                <div class="font-bold text-sm text-white mb-1">① 预警当日</div>
                                <div class="text-[10px] text-slate-400 leading-tight">提取预警当天的收盘价</div>
                            </div>
                        </label>
                        <label class="cursor-pointer relative">
                            <input type="radio" name="timeMode" value="mode2" class="peer hidden radio-custom">
                            <div class="border border-slate-600 rounded-lg p-3 hover:border-blue-400 transition-colors h-full flex flex-col justify-center bg-slate-800/50 shadow-inner min-h-[72px]">
                                <div class="font-bold text-sm text-white mb-1">② 最新实时</div>
                                <div class="text-[10px] text-slate-400 leading-tight">提取股票当下的最新价</div>
                            </div>
                        </label>
                        <label class="cursor-pointer relative">
                            <input type="radio" name="timeMode" value="mode3" class="peer hidden radio-custom">
                            <div class="border border-slate-600 rounded-lg p-3 hover:border-blue-400 transition-colors h-full flex flex-col justify-center bg-slate-800/50 shadow-inner min-h-[72px]">
                                <div class="font-bold text-sm text-white mb-1">③ 单日偏移</div>
                                <div id="customDaysUi" class="flex gap-2 opacity-30 pointer-events-none transition-opacity">
                                    <div class="flex items-center gap-1">
                                        <span class="text-[10px]">向后偏移</span>
                                        <input type="number" id="nextDays" value="1" min="1" max="20" class="input-dark w-12 p-1 text-center text-xs">
                                        <span class="text-[10px]">个交易日</span>
                                    </div>
                                </div>
                            </div>
                        </label>
                        <label class="cursor-pointer relative">
                            <input type="radio" name="timeMode" value="mode4" class="peer hidden radio-custom">
                            <div class="border border-purple-600 rounded-lg p-3 hover:border-purple-400 transition-colors h-full flex flex-col justify-center bg-purple-900/20 shadow-inner min-h-[72px]">
                                <div class="font-bold text-sm text-purple-300 mb-1">④ 连续七日追踪</div>
                                <div class="text-[10px] text-slate-400 leading-tight">T+0至T+6每日独立涨跌</div>
                            </div>
                        </label>
                    </div>
                </div>
            </div>
        </div>
        <div id="progressBox" class="hidden card p-6 border border-blue-900 shadow-[0_0_15px_rgba(59,130,246,0.1)] w-full">
            <div class="flex justify-between items-center text-xs mb-2 text-blue-300">
                <div class="flex items-center gap-2">
                    <span id="progressText" class="font-medium">初始化引擎中...</span>
                    <span id="sourceBadge" class="hidden px-1.5 py-0.5 rounded-[4px] text-[10px] font-black text-white shadow-md transition-all duration-200"></span>
                </div>
                <span id="progressPercent" class="font-mono font-bold">0%</span>
            </div>
            <div class="w-full bg-slate-800 rounded-full h-2">
                <div id="progressBar" class="bg-gradient-to-r from-blue-600 to-blue-400 h-2 rounded-full transition-all duration-300 shadow-[0_0_10px_rgba(59,130,246,0.8)]" style="width: 0%"></div>
            </div>
        </div>
        <div id="results" class="space-y-6 pb-10 w-full">
            <div class="text-center py-20 text-slate-600 border-2 border-dashed border-slate-700 rounded-2xl bg-slate-800/50">
                <i class="fa-solid fa-inbox text-5xl mb-4 opacity-50"></i>
                <p class="text-sm">尚未导入数据。请上传包含预警信息的 TXT 文件。</p>
            </div>
        </div>

        <!-- 新增：底部打赏栏 - 备案式极简布局 -->
        <div class="reward-footer-bar">
            <p class="reward-footer-text">本站所有内容免费分享，若对你有所帮助，可随意打赏一杯咖啡，让我有动力持续维护与更新。</p>
            <div class="reward-footer-btns">
                <button id="alipayBtn" class="reward-footer-btn reward-btn-alipay">
                    <i class="fa-brands fa-alipay"></i> 支付宝打赏
                </button>
                <button id="wechatBtn" class="reward-footer-btn reward-btn-wechat">
                    <i class="fa-brands fa-weixin"></i> 微信打赏
                </button>
            </div>
        </div>
    </div>

    <!-- 新增：打赏弹窗 - 默认隐藏 -->
    <div id="rewardModal" class="hidden">
        <div class="reward-modal-overlay" id="modalOverlay">
            <div class="reward-modal-content" id="modalContent">
                <h3 id="modalTitle" class="reward-modal-title">支付宝打赏</h3>
                <img id="modalImg" class="reward-modal-img" src="" alt="收款码" loading="lazy" />
                <p class="reward-modal-tip">点击空白区域关闭弹窗</p>
            </div>
        </div>
    </div>

    <div id="actionButtons" class="hidden fixed bottom-8 right-8 z-50 flex flex-col gap-3">
        <button id="screenshotBtn" class="bg-indigo-600 hover:bg-indigo-500 text-white px-6 py-3 rounded-full shadow-[0_10px_25px_rgba(79,70,229,0.4)] transition-all transform hover:scale-105 font-bold flex items-center justify-center gap-2">
            <i class="fa-solid fa-camera"></i> 保存长图
        </button>
        <button id="exportBtn" class="bg-emerald-600 hover:bg-emerald-500 text-white px-6 py-3 rounded-full shadow-[0_10px_25px_rgba(16,185,129,0.4)] transition-all transform hover:scale-105 font-bold flex items-center justify-center gap-2">
            <i class="fa-solid fa-file-excel"></i> 导出 CSV
        </button>
    </div>
    <script>
        const API_URL = "/api/kline"; 
      
        let rawContent = "";
        let finalData = []; 
        let globalRunId = 0; 
        let currentRunMode = "";
        function getDynamicFileName(extension) {
            const limit = document.getElementById('limitCount').value;
            const limitStr = (!limit || parseInt(limit) === 0) ? "全部" : limit + "只";
            const st = document.getElementById('startTime').value || "09:30";
            const et = document.getElementById('endTime').value || "15:00";
            const timeStr = st.replace(':', '') + "-" + et.replace(':', '');
            let modeStr = "";
            if (currentRunMode === 'mode1') modeStr = "当日";
            else if (currentRunMode === 'mode2') modeStr = "实时";
            else if (currentRunMode === 'mode3') modeStr = "偏移";
            else if (currentRunMode === 'mode4') modeStr = "连续追踪";
          
            const dateStr = new Date().toLocaleDateString().replace(/\\//g, '');
            return \`量化复盘_[\${limitStr}]_[\${timeStr}]_[\${modeStr}]_\${dateStr}.\${extension}\`;
        }
        document.querySelectorAll('input[name="timeMode"]').forEach(radio => {
            radio.addEventListener('change', (e) => {
                const customUi = document.getElementById('customDaysUi');
                if (e.target.value === 'mode3') customUi.classList.remove('opacity-30', 'pointer-events-none');
                else customUi.classList.add('opacity-30', 'pointer-events-none');
            });
        });
        document.getElementById('fileInput').addEventListener('change', function(e) {
            const file = e.target.files[0];
            const reader = new FileReader();
            reader.onload = function(event) {
                const uint8 = new Uint8Array(event.target.result);
                rawContent = new TextDecoder('gb18030').decode(uint8);
                document.getElementById('runBtn').disabled = false;
                document.getElementById('importBtn').innerHTML = '<i class="fa-solid fa-check mr-2 text-emerald-400"></i>文件已就绪 (' + file.name + ')';
            };
            reader.readAsArrayBuffer(file);
        });
        const delay = ms => new Promise(res => setTimeout(res, ms));
        document.getElementById('runBtn').addEventListener('click', async function() {
            globalRunId++;
            const currentRunId = globalRunId; 
            const resultsDiv = document.getElementById('results');
            const progressBox = document.getElementById('progressBox');
            const runBtn = this;
          
            resultsDiv.innerHTML = "";
            finalData = [];
            progressBox.classList.remove('hidden');
            document.getElementById('actionButtons').classList.add('hidden');
            runBtn.innerHTML = '<i class="fa-solid fa-rotate-right fa-spin mr-2"></i>中断重试';
            runBtn.classList.remove('btn-primary');
            runBtn.classList.add('btn-warning');
            const limit = parseInt(document.getElementById('limitCount').value) || 999999;
            const startTime = document.getElementById('startTime').value;
            const endTime = document.getElementById('endTime').value;
            const timeMode = document.querySelector('input[name="timeMode"]:checked').value;
            currentRunMode = timeMode;
            const nextDays = parseInt(document.getElementById('nextDays').value) || 0;
            const lines = rawContent.split(/\\r?\\n/);
            let strategyMap = new Map();
            lines.forEach(line => {
                const rawParts = line.trim().split(/\\t|\\s{2,}/);
                const parts = rawParts.filter(p => p.trim() !== '');
                if (parts.length < 5) return;
                const code = parts[0].trim();
                const name = parts[1].trim(); 
                let dateIdx = -1;
                for(let j = 2; j < parts.length; j++) {
                    if(parts[j].match(/^\\d{4}[-/]\\d{1,2}[-/]\\d{1,2}/)) {
                        dateIdx = j;
                        break;
                    }
                }
                if (dateIdx === -1) return;
                let dateTimeStr = parts[dateIdx].trim();
                let date, time, priceIdx;
                if (dateTimeStr.includes(' ')) {
                    let dtParts = dateTimeStr.split(/\\s+/);
                    date = dtParts[0];
                    time = dtParts[1] || "15:00"; 
                    priceIdx = dateIdx + 1;
                } else {
                    date = parts[dateIdx].trim();
                    time = parts[dateIdx+1].trim();
                    priceIdx = dateIdx + 2;
                }
                const price = parseFloat(parts[priceIdx]); 
                if(isNaN(price)) return;
                const strategy = parts[parts.length - 1].trim(); 
                if (startTime && time < startTime) return;
                if (endTime && time > endTime) return;
                if (!strategyMap.has(strategy)) strategyMap.set(strategy, []);
                strategyMap.get(strategy).push({ code, name, date, time, price, strategy });
            });
            const strategies = Array.from(strategyMap.keys());
            if(strategies.length === 0) {
                alert("未解析到符合条件的数据，请检查格式或时间过滤段！");
                resetButton(runBtn);
                progressBox.classList.add('hidden');
                return;
            }
            let processedCount = 0;
            const totalToProcess = Array.from(strategyMap.values()).reduce((sum, arr) => sum + Math.min(arr.length, limit), 0);
            let groupIndex = 0;
            for (const sName of strategies) {
                if (currentRunId !== globalRunId) return;
                let group = strategyMap.get(sName);
                group.sort((a, b) => (a.date + a.time).localeCompare(b.date + b.time));
                group = group.slice(0, limit);
                const processedGroup = [];
                for (let i = 0; i < group.length; i += 5) {
                    if (currentRunId !== globalRunId) return; 
                  
                    const chunk = group.slice(i, i + 5);
                    const chunkRes = await Promise.all(chunk.map(async item => {
                        const result = await fetchAndCalculate(item, timeMode, nextDays);
                        processedCount++;
                        if (currentRunId === globalRunId) {
                            updateProgress(processedCount, totalToProcess, \`查询分析中 [\${sName}]: \${item.name}\`, result.provider);
                        }
                        return result;
                    }));
                  
                    if (currentRunId !== globalRunId) return; 
                    processedGroup.push(...chunkRes);
                    await delay(50);
                }
                if (currentRunId !== globalRunId) return; 
                renderStrategyGroup(sName, processedGroup, groupIndex++, timeMode);
                finalData.push({ strategy: sName, items: processedGroup, timeMode });
            }
            if (currentRunId === globalRunId) {
                resetButton(runBtn);
                updateProgress(100, 100, "分析计算完成！");
                document.getElementById('actionButtons').classList.remove('hidden');
            }
        });
        function resetButton(btn) {
            btn.innerHTML = '<i class="fa-solid fa-play mr-2"></i>开始回测';
            btn.classList.remove('btn-warning');
            btn.classList.add('btn-primary');
        }
        function updateProgress(cur, total, text, provider) {
            const p = total === 0 ? 100 : Math.floor((cur / total) * 100);
            document.getElementById('progressBar').style.width = p + "%";
            document.getElementById('progressPercent').innerText = p + "%";
            document.getElementById('progressText').innerText = text;
            const badge = document.getElementById('sourceBadge');
            if (p >= 100) {
                badge.classList.add('hidden');
            } else if (provider && provider !== '无') {
                badge.classList.remove('hidden');
                badge.innerText = provider;
                badge.className = "px-1.5 py-0.5 rounded-[4px] text-[10px] font-black text-white shadow-md transition-colors ";
                if (provider === '东') badge.className += "bg-red-500/80";
                else if (provider === '腾') badge.className += "bg-blue-500/80";
                else if (provider === '新') badge.className += "bg-yellow-600/80";
            }
        }
        const toYYYYMMDD = (dStr) => {
            const matches = String(dStr).match(/(\\d{4})[-/]?(\\d{1,2})[-/]?(\\d{1,2})/);
            if (matches) {
                return matches[1] + matches[2].padStart(2, '0') + matches[3].padStart(2, '0');
            }
            return String(dStr).replace(/\\D/g, '');
        };
        async function fetchAndCalculate(stock, mode, next) {
            const getPrefix = (c) => {
                if (c.startsWith('60') || c.startsWith('68')) return 'sh';
                if (c.startsWith('00') || c.startsWith('30')) return 'sz';
                if (c.startsWith('8') || c.startsWith('43') || c.startsWith('92') || c.startsWith('87')) return 'bj';
                return 'sz'; 
            };
            const prefix = getPrefix(stock.code);
            const fullCode = prefix + stock.code;
          
            const fetchEM = async () => {
                const res = await fetch(\`\${API_URL}?code=\${stock.code}&prefix=\${prefix}&provider=em&_=\${Date.now()}\`);
                const json = await res.json();
                if (json && json.data && json.data.klines && json.data.klines.length > 0) {
                    const kData = json.data.klines.map(line => {
                        const parts = line.split(',');
                        return [parts[0], parts[1], parts[2], parts[3], parts[4], parts[5]];
                    });
                    return { kData, provider: '东' };
                }
                throw new Error("EM None");
            };
            const fetchTX = async () => {
                if (prefix === 'bj') throw new Error("TX skip BJ"); 
                const res = await fetch(\`\${API_URL}?code=\${stock.code}&prefix=\${prefix}&provider=tx&_=\${Date.now()}\`);
                const json = await res.json();
                let kData = json.data[fullCode]?.qfqday || json.data[fullCode]?.day;
                if (kData && kData.length > 0) {
                    const qtData = json.data[fullCode].qt?.[fullCode];
                    if (qtData) {
                        const qtDateStr = qtData[30].substring(0, 8); 
                        const formattedQtDate = qtDateStr.substring(0,4) + "-" + qtDateStr.substring(4,6) + "-" + qtDateStr.substring(6,8);
                        const currentPrice = parseFloat(qtData[3]); 
                        if (kData[kData.length - 1][0] !== formattedQtDate && currentPrice > 0) {
                            kData.push([formattedQtDate, qtData[5], qtData[3], qtData[33], qtData[34], qtData[36]]);
                        }
                    }
                    return { kData, provider: '腾' };
                }
                throw new Error("TX None");
            };
            const fetchSina = async () => {
                const res = await fetch(\`\${API_URL}?code=\${stock.code}&prefix=\${prefix}&provider=sina&_=\${Date.now()}\`);
                const json = await res.json();
                if (json && json.length > 0) {
                    const kData = json.map(item => [item.day.split(' ')[0], item.open, item.close, item.high, item.low, item.volume]);
                    return { kData, provider: '新' };
                }
                throw new Error("Sina None");
            };
            const now = new Date();
            const utc = now.getTime() + (now.getTimezoneOffset() * 60000);
            const bjTime = new Date(utc + (3600000 * 8));
            const h = bjTime.getHours();
            const m = bjTime.getMinutes();
            const timeVal = h * 100 + m;
          
            const isTradingTime = timeVal >= 915 && timeVal < 1500;
          
            let fetchResult = null;
            try {
                if (isTradingTime) {
                    try { fetchResult = await fetchEM(); }
                    catch (e1) {
                        try { fetchResult = await fetchTX(); }
                        catch (e2) { fetchResult = await fetchSina(); }
                    }
                } else {
                    fetchResult = await new Promise((resolve, reject) => {
                        let errCount = 0;
                        const checkReject = () => { errCount++; if (errCount === 3) reject(new Error("All APIs failed")); };
                        fetchEM().then(resolve).catch(checkReject);
                        fetchTX().then(resolve).catch(checkReject);
                        fetchSina().then(resolve).catch(checkReject);
                    });
                }
                const { kData, provider } = fetchResult;
                const normBaseDate = toYYYYMMDD(stock.date);
              
                let baseIdx = -1;
                if (mode !== 'mode2') {
                    for (let i = 0; i < kData.length; i++) {
                        if (toYYYYMMDD(kData[i][0]) === normBaseDate) {
                            baseIdx = i; break;
                        }
                    }
                    if (baseIdx === -1) {
                        for (let i = kData.length - 1; i >= 0; i--) {
                            if (toYYYYMMDD(kData[i][0]) < normBaseDate) {
                                baseIdx = i; break;
                            }
                        }
                    }
                    if (baseIdx === -1) throw new Error("Date Out of Range");
                }
                const alertPrice = stock.price; 
                if (mode === 'mode4') {
                    const day1 = kData[baseIdx];
                    const day2 = baseIdx + 1 < kData.length ? kData[baseIdx + 1] : null;
                    const day3 = baseIdx + 2 < kData.length ? kData[baseIdx + 2] : null;
                    const day4 = baseIdx + 3 < kData.length ? kData[baseIdx + 3] : null;
                    const day5 = baseIdx + 4 < kData.length ? kData[baseIdx + 4] : null;
                    const day6 = baseIdx + 5 < kData.length ? kData[baseIdx + 5] : null;
                    const day7 = baseIdx + 6 < kData.length ? kData[baseIdx + 6] : null;
                    const d1Close = parseFloat(day1[2]);
                    const d1Profit = ((d1Close - alertPrice) / alertPrice) * 100;
                    let d2Close = null, d2Profit = null;
                    if (day2) { d2Close = parseFloat(day2[2]); d2Profit = ((d2Close - d1Close) / d1Close) * 100; }
                    let d3Close = null, d3Profit = null;
                    if (day3) { d3Close = parseFloat(day3[2]); d3Profit = ((d3Close - d2Close) / d2Close) * 100; }
                    let d4Close = null, d4Profit = null;
                    if (day4) { d4Close = parseFloat(day4[2]); d4Profit = ((d4Close - d3Close) / d3Close) * 100; }
                    let d5Close = null, d5Profit = null;
                    if (day5) { d5Close = parseFloat(day5[2]); d5Profit = ((d5Close - d4Close) / d4Close) * 100; }
                    let d6Close = null, d6Profit = null;
                    if (day6) { d6Close = parseFloat(day6[2]); d6Profit = ((d6Close - d5Close) / d5Close) * 100; }
                    let d7Close = null, d7Profit = null;
                    if (day7) { d7Close = parseFloat(day7[2]); d7Profit = ((d7Close - d6Close) / d6Close) * 100; }
                    const finalClose = d7Close || d6Close || d5Close || d4Close || d3Close || d2Close || d1Close;
                    const totalProfit = ((finalClose - alertPrice) / alertPrice) * 100;
                    const daysAvailable = 1 + (day2 ? 1 : 0) + (day3 ? 1 : 0) + (day4 ? 1 : 0) + (day5 ? 1 : 0) + (day6 ? 1 : 0) + (day7 ? 1 : 0);
                    return { 
                        ...stock, 
                        d1Close, d1Profit, d1Date: day1[0].substring(5),
                        d2Close, d2Profit, d2Date: day2 ? day2[0].substring(5) : null,
                        d3Close, d3Profit, d3Date: day3 ? day3[0].substring(5) : null,
                        d4Close, d4Profit, d4Date: day4 ? day4[0].substring(5) : null,
                        d5Close, d5Profit, d5Date: day5 ? day5[0].substring(5) : null,
                        d6Close, d6Profit, d6Date: day6 ? day6[0].substring(5) : null,
                        d7Close, d7Profit, d7Date: day7 ? day7[0].substring(5) : null,
                        closePrice: finalClose, 
                        profitRatio: totalProfit, 
                        isWin: totalProfit > 0,
                        isTie: totalProfit === 0,
                        matchedDate: (day7 || day6 || day5 || day4 || day3 || day2 || day1)[0].substring(5),
                        daysAvailable: daysAvailable,
                        error: false,
                        provider: provider
                    };
                }
              
                let targetIdx = -1;
                if (mode === 'mode2') targetIdx = kData.length - 1;
                else if (mode === 'mode1') targetIdx = baseIdx;
                else if (mode === 'mode3') {
                    targetIdx = baseIdx + next;
                    if (targetIdx >= kData.length) throw new Error("Target Future Date Not Exists");
                }
              
                if (targetIdx < 0) targetIdx = 0;
                const closePrice = parseFloat(kData[targetIdx][2]);
                const matchedDateStr = kData[targetIdx][0].substring(5); 
              
                const profitDiff = closePrice - alertPrice;
                const profitRatio = (profitDiff / alertPrice) * 100;
                return { 
                    ...stock, 
                    closePrice: closePrice, 
                    profitRatio: profitRatio, 
                    isWin: profitDiff > 0,
                    isTie: profitDiff === 0,
                    matchedDate: matchedDateStr,
                    error: false,
                    provider: provider
                };
            } catch (e) {
                return { ...stock, closePrice: stock.price, profitRatio: 0, isWin: false, isTie: false, error: true, daysAvailable: 0, provider: '无' };
            }
        }
        window.toggleAccordion = function(id) {
            const allBodies = document.querySelectorAll('.strategy-body');
            allBodies.forEach(body => {
                if (body.id === id) {
                    body.classList.toggle('hidden');
                    body.previousElementSibling.classList.toggle('group-open');
                } else {
                    body.classList.add('hidden'); 
                    body.previousElementSibling.classList.remove('group-open');
                }
            });
        };
        function renderStrategyGroup(strategyName, list, groupId, timeMode) {
            const container = document.getElementById('results');
            const validStocks = list.filter(i => !i.error);
            const totalValidCount = validStocks.length;
          
            let totalProfitRatioSum = 0;
            let winCount = 0;
          
            let sumD1 = 0, countD1 = 0;
            let sumD2 = 0, countD2 = 0;
            let sumD3 = 0, countD3 = 0;
            let sumD4 = 0, countD4 = 0;
            let sumD5 = 0, countD5 = 0;
            let sumD6 = 0, countD6 = 0;
            let sumD7 = 0, countD7 = 0;
          
            validStocks.forEach(i => {
                totalProfitRatioSum += i.profitRatio;
                if(i.isWin) winCount++;
              
                if (timeMode === 'mode4') {
                    if (i.d1Profit !== null && i.d1Profit !== undefined) { sumD1 += i.d1Profit; countD1++; }
                    if (i.d2Profit !== null && i.d2Profit !== undefined) { sumD2 += i.d2Profit; countD2++; }
                    if (i.d3Profit !== null && i.d3Profit !== undefined) { sumD3 += i.d3Profit; countD3++; }
                    if (i.d4Profit !== null && i.d4Profit !== undefined) { sumD4 += i.d4Profit; countD4++; }
                    if (i.d5Profit !== null && i.d5Profit !== undefined) { sumD5 += i.d5Profit; countD5++; }
                    if (i.d6Profit !== null && i.d6Profit !== undefined) { sumD6 += i.d6Profit; countD6++; }
                    if (i.d7Profit !== null && i.d7Profit !== undefined) { sumD7 += i.d7Profit; countD7++; }
                }
            });
          
            const strategyTotalProfitRatio = totalValidCount > 0 ? (totalProfitRatioSum / totalValidCount).toFixed(2) : "0.00";
            const winRate = totalValidCount > 0 ? ((winCount / totalValidCount) * 100).toFixed(1) : "0.0";
          
            const profitColorClass = strategyTotalProfitRatio > 0 ? 'text-red-500' : strategyTotalProfitRatio < 0 ? 'text-green-500' : 'text-slate-300';
            const profitSign = strategyTotalProfitRatio > 0 ? '+' : '';
            const maxDays = totalValidCount > 0 ? Math.max(1, ...validStocks.map(s => s.daysAvailable || 1)) : 1;
            const refStock = validStocks[0] || {};
            const refD1 = refStock.d1Date || '--';
            const refD2 = refStock.d2Date || '--';
            const refD3 = refStock.d3Date || '--';
            const refD4 = refStock.d4Date || '--';
            const refD5 = refStock.d5Date || '--';
            const refD6 = refStock.d6Date || '--';
            const refD7 = refStock.d7Date || '--';
            let mode4HeaderHtml = '';
            let theadHtml = '';
          
            if (timeMode === 'mode4') {
                const avgD1 = countD1 > 0 ? (sumD1 / countD1).toFixed(2) : "0.00";
                const avgD2 = countD2 > 0 ? (sumD2 / countD2).toFixed(2) : "0.00";
                const avgD3 = countD3 > 0 ? (sumD3 / countD3).toFixed(2) : "0.00";
                const avgD4 = countD4 > 0 ? (sumD4 / countD4).toFixed(2) : "0.00";
                const avgD5 = countD5 > 0 ? (sumD5 / countD5).toFixed(2) : "0.00";
                const avgD6 = countD6 > 0 ? (sumD6 / countD6).toFixed(2) : "0.00";
                const avgD7 = countD7 > 0 ? (sumD7 / countD7).toFixed(2) : "0.00";
              
                mode4HeaderHtml += \`<div class="flex gap-4 sm:gap-6 text-sm items-center flex-wrap justify-end w-full lg:w-auto mt-2 lg:mt-0">\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center"><span class="text-slate-400 text-xs uppercase mb-1">有效股票</span><span class="text-white font-mono text-base font-bold">\${totalValidCount}</span></div>\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+0</span><span class="font-mono text-sm font-bold my-0.5 \${avgD1 > 0 ? 'text-red-500' : avgD1 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD1 > 0 ? '+' : ''}\${avgD1}%</span><span class="text-blue-300 text-xs">(\${refD1})</span></div>\`;
                if (maxDays >= 2) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+1</span><span class="font-mono text-sm font-bold my-0.5 \${avgD2 > 0 ? 'text-red-500' : avgD2 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD2 > 0 ? '+' : ''}\${avgD2}%</span><span class="text-blue-300 text-xs">(\${refD2})</span></div>\`;
                if (maxDays >= 3) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+2</span><span class="font-mono text-sm font-bold my-0.5 \${avgD3 > 0 ? 'text-red-500' : avgD3 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD3 > 0 ? '+' : ''}\${avgD3}%</span><span class="text-blue-300 text-xs">(\${refD3})</span></div>\`;
                if (maxDays >= 4) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+3</span><span class="font-mono text-sm font-bold my-0.5 \${avgD4 > 0 ? 'text-red-500' : avgD4 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD4 > 0 ? '+' : ''}\${avgD4}%</span><span class="text-blue-300 text-xs">(\${refD4})</span></div>\`;
                if (maxDays >= 5) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+4</span><span class="font-mono text-sm font-bold my-0.5 \${avgD5 > 0 ? 'text-red-500' : avgD5 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD5 > 0 ? '+' : ''}\${avgD5}%</span><span class="text-blue-300 text-xs">(\${refD5})</span></div>\`;
                if (maxDays >= 6) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+5</span><span class="font-mono text-sm font-bold my-0.5 \${avgD6 > 0 ? 'text-red-500' : avgD6 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD6 > 0 ? '+' : ''}\${avgD6}%</span><span class="text-blue-300 text-xs">(\${refD6})</span></div>\`;
                if (maxDays >= 7) mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4 w-16 sm:w-20"><span class="text-slate-300 text-xs font-bold uppercase">T+6</span><span class="font-mono text-sm font-bold my-0.5 \${avgD7 > 0 ? 'text-red-500' : avgD7 < 0 ? 'text-green-500' : 'text-slate-300'}">\${avgD7 > 0 ? '+' : ''}\${avgD7}%</span><span class="text-blue-300 text-xs">(\${refD7})</span></div>\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-center justify-center border-l border-slate-700 pl-4"><span class="text-purple-400 text-xs uppercase font-bold mb-1">累计总盈亏</span><span class="\${profitColorClass} font-bold font-mono text-lg">\${profitSign}\${strategyTotalProfitRatio}%</span></div>\`;
                mode4HeaderHtml += \`</div>\`;
              
                theadHtml += \`<th class="p-4 font-medium text-right text-blue-300 whitespace-nowrap">预警价</th>\`;
                theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+0 (当日)</th>\`;
                if (maxDays >= 2) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+1 (次日)</th>\`;
                if (maxDays >= 3) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+2 (三日)</th>\`;
                if (maxDays >= 4) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+3 (四日)</th>\`;
                if (maxDays >= 5) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+4 (五日)</th>\`;
                if (maxDays >= 6) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+5 (六日)</th>\`;
                if (maxDays >= 7) theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">T+6 (七日)</th>\`;
                theadHtml += \`<th class="p-4 font-medium text-right text-purple-300 whitespace-nowrap">累计盈亏</th>\`;
            } else {
                mode4HeaderHtml += \`<div class="flex gap-4 sm:gap-8 text-sm items-center">\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-end"><span class="text-slate-500 text-[10px] uppercase">有效股票数</span><span class="text-white font-mono font-bold">\${totalValidCount}</span></div>\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-end"><span class="text-slate-500 text-[10px] uppercase">胜率</span><span class="text-white font-mono font-bold">\${winRate}%</span></div>\`;
                mode4HeaderHtml += \`<div class="flex flex-col items-end"><span class="text-slate-500 text-[10px] uppercase">策略总盈亏</span><span class="\${profitColorClass} font-bold font-mono text-base">\${profitSign}\${strategyTotalProfitRatio}%</span></div>\`;
                mode4HeaderHtml += \`</div>\`;
              
                theadHtml += \`<th class="p-4 font-medium text-right text-blue-300 whitespace-nowrap">文档买入价</th>\`;
                theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">结算收盘价 <span class="text-[9px] text-slate-500 normal-case tracking-normal">(取值日期)</span></th>\`;
                theadHtml += \`<th class="p-4 font-medium text-right whitespace-nowrap">单只盈亏比</th>\`;
            }
            let tbodyHtml = '';
            list.forEach(i => {
                const pColor = i.profitRatio > 0 ? 'text-red-500' : i.profitRatio < 0 ? 'text-green-500' : 'text-slate-400';
                const statusTag = i.error ? '<span class="px-2 py-1 rounded bg-slate-500/30 text-slate-400 border border-slate-500/50 whitespace-nowrap">未收录</span>' :
                                 i.isWin ? '<span class="px-2 py-1 rounded bg-red-500/10 text-red-500 border border-red-500/20 whitespace-nowrap">盈利</span>' : 
                                 i.isTie ? '<span class="px-2 py-1 rounded bg-slate-500/10 text-slate-400 border border-slate-500/20 whitespace-nowrap">平盘</span>' : 
                                 '<span class="px-2 py-1 rounded bg-green-500/10 text-green-500 border border-green-500/20 whitespace-nowrap">亏损</span>';
              
                let rowInnerHtml = '';
                if (timeMode === 'mode4') {
                    rowInnerHtml += \`<td class="p-4 text-right font-mono text-blue-300 font-bold whitespace-nowrap align-middle">\${i.price.toFixed(2)}</td>\`;
                  
                    if (i.error) {
                        rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 2) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 3) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 4) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 5) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 6) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                        if (maxDays >= 7) rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-500">--</td>\`;
                    } else {
                        const c1 = i.d1Profit > 0 ? 'text-red-500' : i.d1Profit < 0 ? 'text-green-500' : 'text-slate-300';
                        rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                            <div class="text-slate-200 text-sm">\${i.d1Close.toFixed(2)}</div>
                            <div class="font-bold text-xs \${c1} py-0.5">\${(i.d1Profit>0?'+':'')}\${i.d1Profit.toFixed(2)}%</div>
                            <div class="text-slate-400 text-xs">(\${i.d1Date})</div>
                        </td>\`;
                      
                        if (maxDays >= 2) {
                            if (i.d2Close) {
                                const c2 = i.d2Profit > 0 ? 'text-red-500' : i.d2Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d2Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c2} py-0.5">\${(i.d2Profit>0?'+':'')}\${i.d2Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d2Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }
                      
                        if (maxDays >= 3) {
                            if (i.d3Close) {
                                const c3 = i.d3Profit > 0 ? 'text-red-500' : i.d3Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d3Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c3} py-0.5">\${(i.d3Profit>0?'+':'')}\${i.d3Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d3Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }
                        if (maxDays >= 4) {
                            if (i.d4Close) {
                                const c4 = i.d4Profit > 0 ? 'text-red-500' : i.d4Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d4Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c4} py-0.5">\${(i.d4Profit>0?'+':'')}\${i.d4Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d4Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }
                        if (maxDays >= 5) {
                            if (i.d5Close) {
                                const c5 = i.d5Profit > 0 ? 'text-red-500' : i.d5Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d5Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c5} py-0.5">\${(i.d5Profit>0?'+':'')}\${i.d5Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d5Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }
                        if (maxDays >= 6) {
                            if (i.d6Close) {
                                const c6 = i.d6Profit > 0 ? 'text-red-500' : i.d6Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d6Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c6} py-0.5">\${(i.d6Profit>0?'+':'')}\${i.d6Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d6Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }
                        if (maxDays >= 7) {
                            if (i.d7Close) {
                                const c7 = i.d7Profit > 0 ? 'text-red-500' : i.d7Profit < 0 ? 'text-green-500' : 'text-slate-300';
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle">
                                    <div class="text-slate-200 text-sm">\${i.d7Close.toFixed(2)}</div>
                                    <div class="font-bold text-xs \${c7} py-0.5">\${(i.d7Profit>0?'+':'')}\${i.d7Profit.toFixed(2)}%</div>
                                    <div class="text-slate-400 text-xs">(\${i.d7Date})</div>
                                </td>\`;
                            } else {
                                rowInnerHtml += \`<td class="p-4 text-right font-mono whitespace-nowrap align-middle text-slate-600">--</td>\`;
                            }
                        }
                    }
                    rowInnerHtml += \`<td class="p-4 text-right font-mono font-bold \${pColor} text-sm whitespace-nowrap align-middle">\${i.error ? '--' : (i.profitRatio > 0 ? '+' : '') + i.profitRatio.toFixed(2) + '%'}</td>\`;
                } else {
                    rowInnerHtml += \`<td class="p-4 text-right font-mono text-blue-300 font-bold whitespace-nowrap">\${i.price.toFixed(2)}</td>\`;
                    rowInnerHtml += \`<td class="p-4 text-right font-mono text-slate-300 whitespace-nowrap">\${i.error ? '--' : \`\${i.closePrice.toFixed(2)} <br><span class="text-[10px] text-slate-500 font-bold">(\${i.matchedDate})</span>\`}</td>\`;
                    rowInnerHtml += \`<td class="p-4 text-right font-mono font-bold \${pColor} whitespace-nowrap">\${i.error ? '--' : (i.profitRatio > 0 ? '+' : '') + i.profitRatio.toFixed(2) + '%'}</td>\`;
                }
                tbodyHtml += \`
                <tr class="hover:bg-slate-800/60 transition-colors \${i.error ? 'opacity-40' : ''}">
                    <td class="p-4 align-middle">
                        <div class="text-blue-400 font-bold whitespace-nowrap">\${i.code}</div>
                        <div class="text-slate-300 whitespace-nowrap flex items-center gap-1">
                            \${i.name} 
                            <span class="text-[10px] text-slate-600 opacity-50 font-normal cursor-default select-none">\${i.provider || ''}</span>
                        </div>
                    </td>
                    <td class="p-4 text-slate-400 font-mono whitespace-nowrap align-middle">\${i.date} \${i.time}</td>
                    \${rowInnerHtml}
                    <td class="p-4 text-center text-[10px] font-bold align-middle">\${statusTag}</td>
                </tr>
                \`;
            });
            const groupHtml = \`
                <div class="card overflow-hidden shadow-xl animate-row border border-slate-700 w-full">
                    <div class="group-header bg-slate-800 p-4 border-b border-slate-700 flex flex-col lg:flex-row justify-between items-start lg:items-center gap-4" onclick="toggleAccordion('body-\${groupId}')">
                        <div class="flex items-center gap-3">
                            <i class="fa-solid fa-chevron-down chevron-icon text-slate-400"></i>
                            <span class="bg-indigo-600/30 text-indigo-300 text-xs px-2 py-1 rounded border border-indigo-500/30 font-bold truncate max-w-[200px]" title="\${strategyName}">
                                \${strategyName}
                            </span>
                            \${totalValidCount < list.length ? \`<span class="text-[10px] bg-red-900/40 text-red-400 px-2 py-0.5 rounded border border-red-800/50">屏蔽 \${list.length - totalValidCount} 支无数据</span>\` : ''}
                        </div>
                        \${mode4HeaderHtml}
                    </div>
                  
                    <div id="body-\${groupId}" class="strategy-body hidden overflow-x-auto bg-[#172033]">
                        <table class="w-full text-xs text-left">
                            <thead class="text-slate-400 bg-slate-900/50 uppercase">
                                <tr>
                                    <th class="p-4 font-medium whitespace-nowrap">股票信息</th>
                                    <th class="p-4 font-medium whitespace-nowrap">预警时间</th>
                                    \${theadHtml}
                                    <th class="p-4 font-medium text-center whitespace-nowrap">状态</th>
                                </tr>
                            </thead>
                            <tbody class="divide-y divide-slate-800/50">
                                \${tbodyHtml}
                            </tbody>
                        </table>
                    </div>
                </div>
            \`;
            container.insertAdjacentHTML('beforeend', groupHtml);
          
            list.strategyTotalProfitRatio = strategyTotalProfitRatio;
            list.validCount = totalValidCount;
        }
        document.getElementById('screenshotBtn').addEventListener('click', async function() {
            const btn = this;
            const originalHTML = btn.innerHTML;
            const resultsDiv = document.getElementById('results');
          
            btn.innerHTML = '<i class="fa-solid fa-spinner fa-spin"></i> 生成图中...';
            btn.disabled = true;
            try {
                const canvas = await html2canvas(resultsDiv, {
                    backgroundColor: '#0f172a',
                    scale: 3, 
                    useCORS: true, 
                    logging: false, 
                    allowTaint: true
                });
              
                const imgData = canvas.toDataURL('image/png', 1.0);
                const link = document.createElement('a');
                link.href = imgData;
                link.download = getDynamicFileName('png');
                link.click();
            } catch (err) {
                alert("生成图片失败: " + err.message);
            } finally {
                btn.innerHTML = originalHTML;
                btn.disabled = false;
            }
        });
        document.getElementById('exportBtn').onclick = () => {
            let csv = "";
          
            finalData.forEach(group => {
                const timeMode = group.timeMode;
                const maxD = timeMode === 'mode4' ? Math.max(1, ...group.items.filter(i=>!i.error).map(s=>s.daysAvailable||1)) : 1;
              
                if (timeMode === 'mode4') {
                    csv += "\\ufeff预警时间,股票代码,股票名称,文档预警价,T+0取值日期,T+0收盘价,T+0单日盈亏";
                    if (maxD >= 2) csv += ",T+1取值日期,T+1收盘价,T+1单日盈亏";
                    if (maxD >= 3) csv += ",T+2取值日期,T+2收盘价,T+2单日盈亏";
                    if (maxD >= 4) csv += ",T+3取值日期,T+3收盘价,T+3单日盈亏";
                    if (maxD >= 5) csv += ",T+4取值日期,T+4收盘价,T+4单日盈亏";
                    if (maxD >= 6) csv += ",T+5取值日期,T+5收盘价,T+5单日盈亏";
                    if (maxD >= 7) csv += ",T+6取值日期,T+6收盘价,T+6单日盈亏";
                    csv += ",累计总盈亏,状态,策略名称\\n";
                } else {
                    csv += "\\ufeff预警时间,股票代码,股票名称,文档买入基准,结算收盘价,取价日期,单只盈亏比,状态,策略名称\\n";
                }
                group.items.forEach(s => {
                    const status = s.error ? "未收录" : (s.isWin ? "盈利" : s.isTie ? "平盘" : "亏损");
                  
                    if (timeMode === 'mode4') {
                        csv += \`"\${s.date} \${s.time}","\${s.code}","\${s.name}",\${s.price.toFixed(2)},\`;
                        csv += \`"\${s.error ? '--' : s.d1Date}",\${s.error ? 0 : s.d1Close.toFixed(2)},\${s.error ? 0 : s.d1Profit.toFixed(2)}%,\`;
                        if (maxD >= 2) csv += \`"\${s.d2Date||'--'}",\${s.d2Close ? s.d2Close.toFixed(2) : '--'},\${s.d2Profit !== null ? s.d2Profit.toFixed(2) + '%' : '--'},\`;
                        if (maxD >= 3) csv += \`"\${s.d3Date||'--'}",\${s.d3Close ? s.d3Close.toFixed(2) : '--'},\${s.d3Profit !== null ? s.d3Profit.toFixed(2) + '%' : '--'},\`;
                        if (maxD >= 4) csv += \`"\${s.d4Date||'--'}",\${s.d4Close ? s.d4Close.toFixed(2) : '--'},\${s.d4Profit !== null ? s.d4Profit.toFixed(2) + '%' : '--'},\`;
                        if (maxD >= 5) csv += \`"\${s.d5Date||'--'}",\${s.d5Close ? s.d5Close.toFixed(2) : '--'},\${s.d5Profit !== null ? s.d5Profit.toFixed(2) + '%' : '--'},\`;
                        if (maxD >= 6) csv += \`"\${s.d6Date||'--'}",\${s.d6Close ? s.d6Close.toFixed(2) : '--'},\${s.d6Profit !== null ? s.d6Profit.toFixed(2) + '%' : '--'},\`;
                        if (maxD >= 7) csv += \`"\${s.d7Date||'--'}",\${s.d7Close ? s.d7Close.toFixed(2) : '--'},\${s.d7Profit !== null ? s.d7Profit.toFixed(2) + '%' : '--'},\`;
                        csv += \`\${s.error ? 0 : s.profitRatio.toFixed(2)}%,"\${status}","\${group.strategy}"\\n\`;
                    } else {
                        const mDate = s.error ? "--" : s.matchedDate;
                        csv += \`"\${s.date} \${s.time}","\${s.code}","\${s.name}",\${s.price.toFixed(2)},\${s.error ? 0 : s.closePrice.toFixed(2)},"\${mDate}",\${s.error ? 0 : s.profitRatio.toFixed(2)}%,"\${status}","\${group.strategy}"\\n\`;
                    }
                });
              
                csv += \`"统计信息","有效股票数量:\${group.items.validCount}",,,,,"策略总盈亏:",\${group.items.strategyTotalProfitRatio}%,,"\${group.strategy} 汇总"\\n\\n\`;
            });
            const blob = new Blob([csv], { type: 'text/csv;charset=utf-8;' });
            const url = URL.createObjectURL(blob);
            const link = document.createElement("a");
            link.href = url;
            link.download = getDynamicFileName('csv');
            document.body.appendChild(link);
            link.click();
            document.body.removeChild(link);
        };

        // 新增：打赏弹窗逻辑 - 独立作用域，不影响原有代码
        (function() {
            // 收款码配置
            const ALIPAY_IMG_URL = "https://pan.l42.cn/d/%E6%9C%AC%E5%9C%B0%E5%9B%BE%E5%BA%8A/%E6%94%AF%E4%BB%98%E5%AE%9D%E6%94%B6%E6%AC%BE%E7%A0%81.png?sign=gwjNVxW0-zJce_mn_RKvZGVqv8WkartY1AJVE2FWc2c=:0";
            const WECHAT_IMG_URL = "https://pan.l42.cn/d/%E6%9C%AC%E5%9C%B0%E5%9B%BE%E5%BA%8A/%E5%BE%AE%E4%BF%A1%E6%94%B6%E6%AC%BE%E7%A0%81.png?sign=BkrSxjigUugAEQhE0bFfKFnODyqtzC9GDNL1S3i5Xgs=:0";
          
            // 元素获取
            const modal = document.getElementById('rewardModal');
            const modalOverlay = document.getElementById('modalOverlay');
            const modalContent = document.getElementById('modalContent');
            const modalTitle = document.getElementById('modalTitle');
            const modalImg = document.getElementById('modalImg');
            const alipayBtn = document.getElementById('alipayBtn');
            const wechatBtn = document.getElementById('wechatBtn');

            // 打开弹窗
            function openModal(title, imgSrc) {
                modalTitle.innerText = title;
                modalImg.src = imgSrc;
                modal.classList.remove('hidden');
                document.body.style.overflow = 'hidden'; // 禁止背景滚动
            }

            // 关闭弹窗
            function closeModal() {
                modal.classList.add('hidden');
                document.body.style.overflow = ''; // 恢复背景滚动
                modalImg.src = ''; // 清空src，优化加载
            }

            // 按钮点击事件
            alipayBtn.addEventListener('click', () => {
                openModal('支付宝打赏', ALIPAY_IMG_URL);
            });

            wechatBtn.addEventListener('click', () => {
                openModal('微信打赏', WECHAT_IMG_URL);
            });

            // 点击遮罩空白区域关闭
            modalOverlay.addEventListener('click', (e) => {
                if (e.target === modalOverlay) closeModal();
            });

            // 点击弹窗内容区域不关闭
            modalContent.addEventListener('click', (e) => e.stopPropagation());

            // ESC键关闭弹窗
            document.addEventListener('keydown', (e) => {
                if (e.key === 'Escape' && !modal.classList.contains('hidden')) {
                    closeModal();
                }
            });
        })();
    </script>
</body>
</html>
    `;
    return new Response(html, { headers: { "Content-Type": "text/html;charset=UTF-8" } });
  }
};