diff --git a/回报率预测计算器.html b/回报率预测计算器.html
index 9f76538..8a43586 100644
--- a/回报率预测计算器.html
+++ b/回报率预测计算器.html
@@ -2,339 +2,248 @@
 <html lang="zh-CN">
 <head>
     <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>回报率预测计算器</title>
-    <style>
-        :root {
-            color-scheme: light dark;
-            font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
-            background-color: #f7f8fa;
-            color: #1f2933;
-        }
-
-        body {
-            margin: 0;
-            padding: 32px;
-            display: flex;
-            justify-content: center;
-        }
-
-        .container {
-            width: min(1080px, 100%);
-            background: #ffffffee;
-            box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
-            border-radius: 18px;
-            padding: 32px 36px 48px;
-        }
-
-        h1 {
-            margin: 0 0 8px;
-            font-size: 28px;
-        }
-
-        .subtitle {
-            margin: 0;
-            color: #52606d;
-            font-size: 16px;
-        }
-
-        .card-grid {
-            display: grid;
-            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
-            gap: 16px;
-            margin: 32px 0;
-        }
-
-        .summary-card {
-            border-radius: 14px;
-            padding: 20px 24px;
-            background: linear-gradient(135deg, #2563eb, #38bdf8);
-            color: #f8fafc;
-        }
-
-        .summary-card h2 {
-            font-size: 14px;
-            letter-spacing: 0.08em;
-            text-transform: uppercase;
-            margin: 0 0 12px;
-        }
-
-        .summary-value {
-            font-size: 28px;
-            font-weight: 700;
-        }
-
-        .input-section {
-            margin-bottom: 36px;
-        }
-
-        .input-section h3 {
-            margin: 0 0 16px;
-            font-size: 20px;
-        }
-
-        .field-grid {
-            display: grid;
-            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
-            gap: 18px;
-        }
-
-        label {
-            display: flex;
-            flex-direction: column;
-            gap: 6px;
-            font-size: 14px;
-            color: #364152;
-        }
-
-        input[type="number"] {
-            padding: 10px 14px;
-            border: 1px solid #d9e2ec;
-            border-radius: 10px;
-            font-size: 16px;
-            transition: border-color 0.2s ease, box-shadow 0.2s ease;
-        }
-
-        input[type="number"]:focus {
-            border-color: #2563eb;
-            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
-            outline: none;
-        }
-
-        .result-section {
-            margin-top: 40px;
-        }
-
-        table {
-            width: 100%;
-            border-collapse: collapse;
-            margin-bottom: 24px;
-        }
-
-        th,
-        td {
-            padding: 12px 16px;
-            border-bottom: 1px solid #e4ebf3;
-            text-align: right;
-        }
-
-        th:first-child,
-        td:first-child {
-            text-align: left;
-        }
-
-        th {
-            background: #f0f4ff;
-            font-weight: 600;
-        }
-
-        .note {
-            font-size: 13px;
-            color: #e4ebf3;
-        }
-
-        @media (max-width: 768px) {
-            body {
-                padding: 16px;
-            }
-
-            .container {
-                padding: 24px;
+    <script src="https://cdn.tailwindcss.com"></script>
+    <script>
+        tailwind.config = {
+            theme: {
+                extend: {
+                    colors: {
+                        primary: '#2563eb',
+                        secondary: '#38bdf8'
+                    }
+                }
             }
         }
-    </style>
+    </script>
 </head>
-<body>
-    <div class="container">
-        <header>
-            <h1>回报率预测计算器</h1>
-            <p class="subtitle">根据《回报率预测》文档的假设提供默认值，可随场景调整实时查看财务指标。</p>
-        </header>
+<body class="bg-gray-50 font-sans text-gray-800">
+    <div class="min-h-screen px-4 py-6 md:px-8 md:py-8">
+        <div class="max-w-6xl mx-auto bg-white/95 shadow-xl rounded-2xl p-6 md:p-8">
+            <header class="mb-8">
+                <h1 class="text-2xl md:text-3xl font-bold text-gray-900 mb-2">回报率预测计算器</h1>
+                <p class="text-gray-600 text-sm md:text-base">根据《回报率预测》文档的假设提供默认值，可随场景调整实时查看财务指标。</p>
+            </header>
 
-        <div class="card-grid">
-            <div class="summary-card">
-                <h2>月度净利润</h2>
-                <div id="monthlyNetProfit" class="summary-value">¥ 33.00</div>
-                <p class="note">= 月毛利 - 固定运营成本</p>
-            </div>
-            <div class="summary-card">
-                <h2>投资回收期</h2>
-                <div id="paybackPeriod" class="summary-value">54.5 个月</div>
-                <p class="note">= 总投资 / 月净利润</p>
-            </div>
-            <div class="summary-card">
-                <h2>年化 ROI</h2>
-                <div id="annualROI" class="summary-value">22.0%</div>
-                <p class="note">= (年净利润 / 总投资) × 100%</p>
+            <!-- Summary Cards -->
+            <div class="grid grid-cols-1 md:grid-cols-3 gap-4 mb-8">
+                <div class="bg-gradient-to-br from-primary to-secondary rounded-xl p-5 text-white">
+                    <h2 class="text-xs md:text-sm uppercase tracking-wider font-semibold mb-3">月度净利润</h2>
+                    <div id="monthlyNetProfit" class="text-2xl md:text-3xl font-bold mb-2">¥ 33.00</div>
+                    <p class="text-xs text-blue-100">= 月毛利 - 固定运营成本</p>
+                </div>
+                <div class="bg-gradient-to-br from-primary to-secondary rounded-xl p-5 text-white">
+                    <h2 class="text-xs md:text-sm uppercase tracking-wider font-semibold mb-3">投资回收期</h2>
+                    <div id="paybackPeriod" class="text-2xl md:text-3xl font-bold mb-2">54.5 个月</div>
+                    <p class="text-xs text-blue-100">= 总投资 / 月净利润</p>
+                </div>
+                <div class="bg-gradient-to-br from-primary to-secondary rounded-xl p-5 text-white">
+                    <h2 class="text-xs md:text-sm uppercase tracking-wider font-semibold mb-3">年化 ROI</h2>
+                    <div id="annualROI" class="text-2xl md:text-3xl font-bold mb-2">22.0%</div>
+                    <p class="text-xs text-blue-100">= (年净利润 / 总投资) × 100%</p>
+                </div>
             </div>
+
+            <!-- Input Sections -->
+            <section class="mb-8">
+                <h3 class="text-lg md:text-xl font-semibold text-gray-900 mb-4">核心量化假设</h3>
+                <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 gap-4">
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">日均废纸板回收量 (公斤)</span>
+                        <input id="dailyCardboard" type="number" min="0" step="0.1" value="20" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">日均塑料瓶回收量 (公斤)</span>
+                        <input id="dailyPet" type="number" min="0" step="0.1" value="10" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">月计费天数 (天)</span>
+                        <input id="daysPerMonth" type="number" min="1" step="1" value="30" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">运营站点数量 (个)</span>
+                        <input id="siteCount" type="number" min="1" step="1" value="5" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">废纸板回收价 ¥/公斤 (给用户)</span>
+                        <input id="buyPriceCardboard" type="number" min="0" step="0.01" value="0.8" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">废纸板出售价 ¥/公斤 (给打包站)</span>
+                        <input id="sellPriceCardboard" type="number" min="0" step="0.01" value="1.2" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">塑料瓶回收价 ¥/公斤 (给用户)</span>
+                        <input id="buyPricePet" type="number" min="0" step="0.01" value="1.4" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">塑料瓶出售价 ¥/公斤 (给打包站)</span>
+                        <input id="sellPricePet" type="number" min="0" step="0.01" value="2.0" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                </div>
+            </section>
+
+            <section class="mb-8">
+                <h3 class="text-lg md:text-xl font-semibold text-gray-900 mb-4">运营及投入假设</h3>
+                <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-4">
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">场地合作分成 (占销售总收入 %)</span>
+                        <input id="siteFeePercent" type="number" min="0" step="0.1" value="10" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">月物流清运成本 (¥)</span>
+                        <input id="logisticsCost" type="number" min="0" step="1" value="220" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">设备维护与网络费 (¥/月)</span>
+                        <input id="maintenanceCost" type="number" min="0" step="1" value="27" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">其他运营成本 (¥/月)</span>
+                        <input id="otherCost" type="number" min="0" step="1" value="50" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">单站设备投入 (¥)</span>
+                        <input id="equipmentCost" type="number" min="0" step="10" value="1500" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                    <label class="block">
+                        <span class="text-sm font-medium text-gray-700 mb-2 block">部署及安装成本 (¥)</span>
+                        <input id="deploymentCost" type="number" min="0" step="10" value="300" 
+                               class="w-full px-3 py-2 border border-gray-300 rounded-lg text-base focus:border-primary focus:ring-2 focus:ring-primary/20 focus:outline-none transition-colors" />
+                    </label>
+                </div>
+            </section>
+
+            <!-- Results Section -->
+            <section class="space-y-6">
+                <h3 class="text-lg md:text-xl font-semibold text-gray-900">产出指标</h3>
+                
+                <!-- 产出指标表格 -->
+                <div class="overflow-x-auto">
+                    <table class="w-full border-collapse bg-white rounded-lg overflow-hidden shadow-sm">
+                        <thead>
+                            <tr class="bg-blue-50">
+                                <th class="text-left px-4 py-3 text-sm font-semibold text-gray-900">指标</th>
+                                <th class="text-right px-4 py-3 text-sm font-semibold text-gray-900">废纸板</th>
+                                <th class="text-right px-4 py-3 text-sm font-semibold text-gray-900">塑料瓶</th>
+                                <th class="text-right px-4 py-3 text-sm font-semibold text-gray-900">合计</th>
+                            </tr>
+                        </thead>
+                        <tbody class="divide-y divide-gray-200">
+                            <tr>
+                                <td class="px-4 py-3 text-sm text-gray-900">月度回收量 (公斤)</td>
+                                <td id="monthlyCardboardKg" class="px-4 py-3 text-sm text-right text-gray-600">600.0</td>
+                                <td id="monthlyPetKg" class="px-4 py-3 text-sm text-right text-gray-600">300.0</td>
+                                <td id="monthlyTotalKg" class="px-4 py-3 text-sm text-right font-medium text-gray-900">900.0</td>
+                            </tr>
+                            <tr>
+                                <td class="px-4 py-3 text-sm text-gray-900">给用户回收金 (¥)</td>
+                                <td id="payoutCardboard" class="px-4 py-3 text-sm text-right text-gray-600">¥ 480.00</td>
+                                <td id="payoutPet" class="px-4 py-3 text-sm text-right text-gray-600">¥ 420.00</td>
+                                <td id="payoutTotal" class="px-4 py-3 text-sm text-right font-medium text-gray-900">¥ 900.00</td>
+                            </tr>
+                            <tr>
+                                <td class="px-4 py-3 text-sm text-gray-900">销售收入 (¥)</td>
+                                <td id="saleCardboard" class="px-4 py-3 text-sm text-right text-gray-600">¥ 720.00</td>
+                                <td id="salePet" class="px-4 py-3 text-sm text-right text-gray-600">¥ 600.00</td>
+                                <td id="saleTotal" class="px-4 py-3 text-sm text-right font-medium text-gray-900">¥ 1,320.00</td>
+                            </tr>
+                            <tr>
+                                <td class="px-4 py-3 text-sm text-gray-900">毛利 (¥)</td>
+                                <td id="grossCardboard" class="px-4 py-3 text-sm text-right text-gray-600">¥ 240.00</td>
+                                <td id="grossPet" class="px-4 py-3 text-sm text-right text-gray-600">¥ 180.00</td>
+                                <td id="grossTotal" class="px-4 py-3 text-sm text-right font-medium text-primary">¥ 420.00</td>
+                            </tr>
+                        </tbody>
+                    </table>
+                </div>
+
+                <!-- 成本拆解表格 -->
+                <div class="overflow-x-auto">
+                    <table class="w-full border-collapse bg-white rounded-lg overflow-hidden shadow-sm">
+                        <thead>
+                            <tr class="bg-blue-50">
+                                <th class="text-left px-4 py-3 text-sm font-semibold text-gray-900">成本拆解</th>
+                                <th class="text-right px-4 py-3 text-sm font-semibold text-gray-900">金额 (¥)</th>
+                            </tr>
+                        </thead>
+                        <tbody class="divide-y divide-gray-200">
+                            <tr>
+                                <td class="px-4 py-3 text-sm text-gray-900">场地合作费</td>
+                                <td id="siteFee" class="px-4 py-3 text-sm text-right text-gray-600">¥ 90.00</td>
+                            </tr>
+                            <tr>
+                                <td class="px-4 py-3 text-sm text-gray-900">月物流清运成本</td>
+                                <td id="logisticsCostCell" class="px-4 py-3 text-sm text-right text-gray-600">¥ 220.00</td>
+                            </tr>
+                            <tr>
+                                <td class="px-4 py-3 text-sm text-gray-900">设备维护与网络费</td>
+                                <td id="maintenanceCostCell" class="px-4 py-3 text-sm text-right text-gray-600">¥ 27.00</td>
+                            </tr>
+                            <tr>
+                                <td class="px-4 py-3 text-sm text-gray-900">其他运营成本</td>
+                                <td id="otherCostCell" class="px-4 py-3 text-sm text-right text-gray-600">¥ 50.00</td>
+                            </tr>
+                            <tr class="bg-gray-50">
+                                <td class="px-4 py-3 text-sm font-semibold text-gray-900">固定成本合计</td>
+                                <td id="fixedCostTotal" class="px-4 py-3 text-sm text-right font-semibold text-gray-900">¥ 387.00</td>
+                            </tr>
+                        </tbody>
+                    </table>
+                </div>
+
+                <!-- 投资与回报表格 -->
+                <div class="overflow-x-auto">
+                    <table class="w-full border-collapse bg-white rounded-lg overflow-hidden shadow-sm">
+                        <thead>
+                            <tr class="bg-blue-50">
+                                <th class="text-left px-4 py-3 text-sm font-semibold text-gray-900">投资与回报</th>
+                                <th class="text-right px-4 py-3 text-sm font-semibold text-gray-900">金额 / 指标</th>
+                            </tr>
+                        </thead>
+                        <tbody class="divide-y divide-gray-200">
+                            <tr>
+                                <td class="px-4 py-3 text-sm text-gray-900">总投资 (Capex)</td>
+                                <td id="totalInvestment" class="px-4 py-3 text-sm text-right text-gray-600">¥ 1,800.00</td>
+                            </tr>
+                            <tr>
+                                <td class="px-4 py-3 text-sm text-gray-900">月度净利润</td>
+                                <td id="netProfitCell" class="px-4 py-3 text-sm text-right font-medium text-primary">¥ 33.00</td>
+                            </tr>
+                            <tr>
+                                <td class="px-4 py-3 text-sm text-gray-900">投资回收期</td>
+                                <td id="paybackCell" class="px-4 py-3 text-sm text-right text-gray-600">54.5 个月</td>
+                            </tr>
+                            <tr>
+                                <td class="px-4 py-3 text-sm text-gray-900">年化投资回报率</td>
+                                <td id="annualRoiCell" class="px-4 py-3 text-sm text-right font-medium text-green-600">22.0%</td>
+                            </tr>
+                        </tbody>
+                    </table>
+                </div>
+
+                <div class="bg-yellow-50 border border-yellow-200 rounded-lg p-4">
+                    <p class="text-sm text-yellow-800">
+                        <span class="font-semibold">提示：</span>
+                        若月度净利润≤0，则投资回收期视为"尚无法回收"，请通过提升日均回收量或优化成本结构来改进模型。
+                    </p>
+                </div>
+            </section>
         </div>
-
-        <section class="input-section">
-            <h3>核心量化假设</h3>
-            <div class="field-grid">
-                <label>
-                    日均废纸板回收量 (公斤)
-                    <input id="dailyCardboard" type="number" min="0" step="0.1" value="20" />
-                </label>
-                <label>
-                    日均塑料瓶回收量 (公斤)
-                    <input id="dailyPet" type="number" min="0" step="0.1" value="10" />
-                </label>
-                <label>
-                    月计费天数 (天)
-                    <input id="daysPerMonth" type="number" min="1" step="1" value="30" />
-                </label>
-                <label>
-                    运营站点数量 (个)
-                    <input id="siteCount" type="number" min="1" step="1" value="1" />
-                </label>
-                <label>
-                    废纸板回收价 ¥/公斤 (给用户)
-                    <input id="buyPriceCardboard" type="number" min="0" step="0.01" value="0.8" />
-                </label>
-                <label>
-                    废纸板出售价 ¥/公斤 (给打包站)
-                    <input id="sellPriceCardboard" type="number" min="0" step="0.01" value="1.2" />
-                </label>
-                <label>
-                    塑料瓶回收价 ¥/公斤 (给用户)
-                    <input id="buyPricePet" type="number" min="0" step="0.01" value="1.4" />
-                </label>
-                <label>
-                    塑料瓶出售价 ¥/公斤 (给打包站)
-                    <input id="sellPricePet" type="number" min="0" step="0.01" value="2.0" />
-                </label>
-            </div>
-        </section>
-
-        <section class="input-section">
-            <h3>运营及投入假设</h3>
-            <div class="field-grid">
-                <label>
-                    场地合作分成 (占销售总收入 %)
-                    <input id="siteFeePercent" type="number" min="0" step="0.1" value="6.8" />
-                </label>
-                <label>
-                    月物流清运成本 (¥)
-                    <input id="logisticsCost" type="number" min="0" step="1" value="220" />
-                </label>
-                <label>
-                    设备维护与网络费 (¥/月)
-                    <input id="maintenanceCost" type="number" min="0" step="1" value="27" />
-                </label>
-                <label>
-                    其他运营成本 (¥/月)
-                    <input id="otherCost" type="number" min="0" step="1" value="50" />
-                </label>
-                <label>
-                    单站设备投入 (¥)
-                    <input id="equipmentCost" type="number" min="0" step="10" value="1500" />
-                </label>
-                <label>
-                    部署及安装成本 (¥)
-                    <input id="deploymentCost" type="number" min="0" step="10" value="300" />
-                </label>
-            </div>
-        </section>
-
-        <section class="result-section">
-            <h3>产出指标</h3>
-            <table>
-                <thead>
-                    <tr>
-                        <th>指标</th>
-                        <th>废纸板</th>
-                        <th>塑料瓶</th>
-                        <th>合计</th>
-                    </tr>
-                </thead>
-                <tbody>
-                    <tr>
-                        <td>月度回收量 (公斤)</td>
-                        <td id="monthlyCardboardKg">600.0</td>
-                        <td id="monthlyPetKg">300.0</td>
-                        <td id="monthlyTotalKg">900.0</td>
-                    </tr>
-                    <tr>
-                        <td>给用户回收金 (¥)</td>
-                        <td id="payoutCardboard">¥ 480.00</td>
-                        <td id="payoutPet">¥ 420.00</td>
-                        <td id="payoutTotal">¥ 900.00</td>
-                    </tr>
-                    <tr>
-                        <td>销售收入 (¥)</td>
-                        <td id="saleCardboard">¥ 720.00</td>
-                        <td id="salePet">¥ 600.00</td>
-                        <td id="saleTotal">¥ 1,320.00</td>
-                    </tr>
-                    <tr>
-                        <td>毛利 (¥)</td>
-                        <td id="grossCardboard">¥ 240.00</td>
-                        <td id="grossPet">¥ 180.00</td>
-                        <td id="grossTotal">¥ 420.00</td>
-                    </tr>
-                </tbody>
-            </table>
-
-            <table>
-                <thead>
-                    <tr>
-                        <th>成本拆解</th>
-                        <th>金额 (¥)</th>
-                    </tr>
-                </thead>
-                <tbody>
-                    <tr>
-                        <td>场地合作费</td>
-                        <td id="siteFee">¥ 90.00</td>
-                    </tr>
-                    <tr>
-                        <td>月物流清运成本</td>
-                        <td id="logisticsCostCell">¥ 220.00</td>
-                    </tr>
-                    <tr>
-                        <td>设备维护与网络费</td>
-                        <td id="maintenanceCostCell">¥ 27.00</td>
-                    </tr>
-                    <tr>
-                        <td>其他运营成本</td>
-                        <td id="otherCostCell">¥ 50.00</td>
-                    </tr>
-                    <tr>
-                        <td><strong>固定成本合计</strong></td>
-                        <td id="fixedCostTotal"><strong>¥ 387.00</strong></td>
-                    </tr>
-                </tbody>
-            </table>
-
-            <table>
-                <thead>
-                    <tr>
-                        <th>投资与回报</th>
-                        <th>金额 / 指标</th>
-                    </tr>
-                </thead>
-                <tbody>
-                    <tr>
-                        <td>总投资 (Capex)</td>
-                        <td id="totalInvestment">¥ 1,800.00</td>
-                    </tr>
-                    <tr>
-                        <td>月度净利润</td>
-                        <td id="netProfitCell">¥ 33.00</td>
-                    </tr>
-                    <tr>
-                        <td>投资回收期</td>
-                        <td id="paybackCell">54.5 个月</td>
-                    </tr>
-                    <tr>
-                        <td>年化投资回报率</td>
-                        <td id="annualRoiCell">22.0%</td>
-                    </tr>
-                </tbody>
-            </table>
-
-            <p class="note">提示：若月度净利润≤0，则投资回收期视为“尚无法回收”，请通过提升日均回收量或优化成本结构来改进模型。</p>
-        </section>
     </div>
 
     <script>
@@ -424,7 +333,7 @@
             document.getElementById("logisticsCostCell").textContent = formatCurrency(logisticsCostTotal);
             document.getElementById("maintenanceCostCell").textContent = formatCurrency(maintenanceCostTotal);
             document.getElementById("otherCostCell").textContent = formatCurrency(otherCostTotal);
-            document.getElementById("fixedCostTotal").innerHTML = `<strong>${formatCurrency(fixedCostTotal)}</strong>`;
+            document.getElementById("fixedCostTotal").textContent = formatCurrency(fixedCostTotal);
 
             document.getElementById("totalInvestment").textContent = formatCurrency(totalInvestment);
 

指标	废纸板	塑料瓶	合计
月度回收量 (公斤)	600.0	300.0	900.0
给用户回收金 (¥)	¥ 480.00	¥ 420.00	¥ 900.00
销售收入 (¥)	¥ 720.00	¥ 600.00	¥ 1,320.00
毛利 (¥)	¥ 240.00	¥ 180.00	¥ 420.00
成本拆解	金额 (¥)
场地合作费	¥ 90.00
月物流清运成本	¥ 220.00
设备维护与网络费	¥ 27.00
其他运营成本	¥ 50.00
固定成本合计	¥ 387.00
投资与回报	金额 / 指标
总投资 (Capex)	¥ 1,800.00
月度净利润	¥ 33.00
投资回收期	54.5 个月
年化投资回报率	22.0%