dianshang-qianduan/src/views/channel/index.vue

<template>
    <div class="channel student-training-shell">
        <main class="training-core">
            <section class="task-header">
                <div class="task-head-main">
                    <h1 class="task-title">{{ taskTitle }}</h1>
                    <p class="task-brief">
                        <span class="task-brief-text">{{ taskBackground }}</span>
                        <button type="button" class="task-brief-toggle" @click="briefOpen = !briefOpen">
                            {{ briefOpen ? "收起" : "展开目标与要求" }}
                        </button>
                        <span v-if="briefOpen" class="task-brief-more">
                            <b>实训目标</b>
                            <ul>
                                <li v-for="goal in taskGoals" :key="goal">{{ goal }}</li>
                            </ul>
                            <b>实训要求</b>
                            <p>{{ taskRequirement }}</p>
                        </span>
                    </p>
                </div>
            </section>
            <section class="task-action-strip">
                <TrainingTaskToolbar :task-key="TASK_KEY" :on-submit="submitTask" :on-reset="resetTask"
                    :on-export="exportOutcome" />
            </section>
            <section class="task-card">
                <nav v-if="hasConfiguredSteps" class="step-indicator" aria-label="采购需求预测步骤"><template
                        v-for="(step, index) in configuredSteps" :key="`${step}-${index}`"><button type="button"
                            :class="['step-tab', { active: activeStep === index + 1, complete: activeStep > index + 1 }]"
                            :aria-current="activeStep === index + 1 ? 'step' : undefined"
                            :aria-label="`第${index + 1}步：${step}`" @click="setCurrentStep(index + 1)"><span
                                class="step-marker">{{
                                    String(index + 1).padStart(2, '0') }}</span><span class="step-copy"><strong
                                    class="step-name" :title="step">{{ step }}</strong><span class="step-action">{{
                                        activeStep === index + 1 ? '当前步骤' : '点击切换' }} <span
                                        aria-hidden="true">→</span></span></span></button><span
                            v-if="index < configuredSteps.length - 1" class="step-connector"
                            aria-hidden="true"></span></template>
                </nav>
                <section v-show="isSectionVisible(1)" class="step-card">
                    <div class="step-title-row">
                        <div>
                            <p class="section-eyebrow">Step {{ String(activeStep).padStart(2, '0') }}</p>
                            <h3>{{ activeStepName }}</h3>
                        </div>
                    </div>

                    <p class="linear-forecast-intro">线性预测的核心是拟合趋势线（y=a+bt），是基于历史数据预测未来销量的有效方法。根据案例资料及数据，预测案例店铺产品未来 3
                        个月市场需求数据。</p>
                    <div class="linear-forecast-panel">
                        <el-table :data="linearForecastRows" border class="linear-forecast-table">
                            <el-table-column prop="label" label="预测月份" align="center" width="310" />
                            <el-table-column label="预测案例店铺市场需求量（取整）" align="center">
                                <template #default="{ row }">
                                    <el-input-number v-model="row.demand" :min="0" :precision="0" :step="1"
                                        :controls="false" placeholder="请输入非负整数" class="linear-forecast-input" />
                                </template>
                            </el-table-column>
                        </el-table>
                    </div>
                    <section class="linear-forecast-guide">
                        <div>
                            <p class="guide-title">可参考以下方法：</p>
                            <ol>
                                <li>下载案例数据表，使用 Excel 中的 FORECAST.LINEAR 函数（WPS 为 FORECAST 函数），自行预测未来 3 个月市场需求。</li>
                                <li>导出实训数据表，上传到通用 AI 大模型，通过大模型计算结果。参考提示词如下：请根据 12 个月销量数据，利用线性预测法预测未来三个月的销量数据，给出计算过程。
                                </li>
                            </ol>
                        </div>
                        <el-button type="primary" class="practice-guide-button"
                            @click="downloadPracticeGuide">下载实训操作说明</el-button>
                    </section>
                </section>
                <section v-show="isSectionVisible(2)" class="step-card">
                    <div class="step-title-row">
                        <div>
                            <p class="section-eyebrow">Step {{ String(activeStep).padStart(2, '0') }}</p>
                            <h3>{{ activeStepName }}</h3>
                        </div>
                    </div>
                    <p class="forecast-visual-intro">计算未来 3 个月需求量后，使用散点图 + 趋势线绘制需求量预测趋势图，呈现已知的 12 个月销量以及预测数据的整体走势。</p>
                    <section class="forecast-visual-upload-card">
                        <label v-if="!demandForecastChart.url" class="forecast-visual-dropzone"
                            :class="{ 'is-uploading': uploadingDemandForecastChart }">
                            <input type="file" accept=".png,.jpg,.jpeg,.webp,image/png,image/jpeg,image/webp"
                                :disabled="uploadingDemandForecastChart" @change="handleDemandForecastChartUpload" />
                            <span class="forecast-visual-upload-icon" aria-hidden="true">↥</span>
                            <strong>{{ uploadingDemandForecastChart ? "正在上传图形..." : "上传需求预测可视化图形" }}</strong>
                            <span>支持 PNG、JPG、JPEG、WEBP 格式，上传后可点击缩略图预览</span>
                        </label>
                        <div v-else class="forecast-visual-preview">
                            <el-image :src="demandForecastChart.url" :preview-src-list="[demandForecastChart.url]"
                                :initial-index="0" fit="cover" preview-teleported />
                            <div class="forecast-visual-file-meta">
                                <strong>{{ demandForecastChart.name || "需求预测可视化图形" }}</strong>
                                <span>点击图形可放大预览</span>
                                <button type="button" class="forecast-visual-replace"
                                    @click="clearDemandForecastChart">重新上传</button>
                            </div>
                        </div>
                    </section>
                    <section class="forecast-visual-guide">
                        <div>
                            <p class="guide-title">可参考以下方法：</p>
                            <ol>
                                <li>使用 Excel/WPS 绘图功能实现可视化，可参考《实训操作说明》完成。</li>
                                <li>下载实训数据表，加上预测的三个月需求数据，表格整体数据上传到通用 AI
                                    大模型，通过大模型计算结果生成可视化图形。参考提示词：请根据表格数据，生成数据趋势图，要求使用散点图加趋势图绘制数据走势。
                                </li>
                            </ol>
                        </div>
                        <el-button type="primary" class="practice-guide-button"
                            @click="downloadPracticeGuide">下载实训操作说明</el-button>
                    </section>
                </section>
                <section v-show="isSectionVisible(3)" class="step-card">
                    <div class="step-title-row">
                        <div>
                            <p class="section-eyebrow">Step {{ String(activeStep).padStart(2, '0') }}</p>
                            <h3>{{ activeStepName }}</h3>
                        </div>
                    </div>
                    <p class="procurement-plan-intro">基于步骤一预测的未来3个月销量，结合安全库存和期初库存，计算各月采购量，填报采购预测表。</p>
                    <section class="procurement-plan-rules">
                        <h4>采购规则</h4>
                        <ol>
                            <li>安全库存：按预测销量的 10% 预留，应对突发订单波动（安全库存 = 预测销量 × 10%，四舍五入取整）。</li>
                            <li>补货周期：按月采购，每月月初下达采购订单。</li>
                            <li>期初库存：第 12 月末剩余库存为 30 台，作为预测第 1 个月（t=13）的期初库存；此后各月期初库存为上月末剩余库存。</li>
                        </ol>
                        <p class="procurement-plan-formula">月度采购量 = 预测销量 + 安全库存 - 期初库存</p>
                    </section>
                    <div class="procurement-plan-table-wrap">
                        <el-table :data="procurementPlanRows" border class="procurement-plan-table">
                            <el-table-column prop="label" label="预测月份" align="center" min-width="220" />
                            <el-table-column label="预测销量（台）" align="center" min-width="160">
                                <template #default="scope">
                                    <span class="procurement-plan-readonly">{{
                                        procurementPlanExpectedRows[scope.$index]?.demand ?? '请先完成第 1 步' }}</span>
                                </template>
                            </el-table-column>
                            <el-table-column label="安全库存（台）" align="center" min-width="165">
                                <template #default="scope">
                                    <el-input-number v-model="scope.row.safetyStock" :min="0" :precision="0"
                                        :controls="false" class="procurement-plan-input" placeholder="请输入" />
                                </template>
                            </el-table-column>
                            <el-table-column label="期初库存（台）" align="center" min-width="165">
                                <template #default="scope">
                                    <el-input-number v-model="scope.row.openingStock" :min="0" :precision="0"
                                        :controls="false" class="procurement-plan-input" placeholder="请输入" />
                                </template>
                            </el-table-column>
                            <el-table-column label="采购量（台）" align="center" min-width="165">
                                <template #default="scope">
                                    <el-input-number v-model="scope.row.purchaseQuantity" :precision="0"
                                        :controls="false" class="procurement-plan-input" placeholder="请输入" />
                                </template>
                            </el-table-column>
                        </el-table>
                    </div>
                    <p class="procurement-plan-hint">预测销量由第 1 步同步带入。提交时将按题设规则校验安全库存、期初库存和采购量。</p>
                </section>
                <section v-show="isSectionVisible(4)" class="step-card">
                    <div class="step-title-row">
                        <div>
                            <p class="section-eyebrow">Step {{ String(activeStep).padStart(2, '0') }}</p>
                            <h3>{{ activeStepName }}</h3>
                        </div>
                    </div>
                    <p>未来需求预测，使用线性回归模型预测2025年采购量：</p>
                    <el-table :data="forecastData" border style="width: 50%" :header-cell-style="{
                        color: '#fff',
                        fontSize: '14px',
                        backgroundColor: '#1f2937!important',
                    }">
                        <el-table-column prop="month" label="月份" align="center"></el-table-column>
                        <el-table-column prop="forecast" label="预测采购量" align="center">
                            <template #default="scope">
                                <el-input v-model="scope.row.forecast" placeholder=""></el-input>
                            </template>
                        </el-table-column>
                    </el-table>
                    <p>
                        <el-button @click="drawForecastChart" type="primary">点击进行采购量预测可视化</el-button>
                        <el-button @click="runResultShow = true" type="primary">查看代码</el-button>
                        <el-button @click="go">跳转到Python在线编程环境</el-button>
                    </p>
                    <div id="forecastChart" ref="forecastChart" style="width: 80%; height: 400px"></div>
                </section>
                <div v-if="hasConfiguredSteps" class="step-navigation"><button type="button" class="btn-nav"
                        :disabled="activeStep === 1" @click="goPreviousStep"><el-icon>
                            <ArrowLeft />
                        </el-icon>上一步</button><button type="button" class="btn-nav btn-save" :disabled="saving"
                        @click="saveCurrentProgress"><el-icon>
                            <CircleCheck />
                        </el-icon>保存当前进度</button><button type="button" class="btn-nav btn-primary"
                        :disabled="activeStep === configuredSteps.length" @click="goNextStep">下一步<el-icon>
                            <ArrowRight />
                        </el-icon></button></div>
                <pop-model :showModel="runResultShow" title="设置代码" @closePop="closeCode">
                    <template v-slot:content>
                        <div>
                            <codemirror :code="code"></codemirror>
                        </div>
                    </template>
                </pop-model>
            </section>
        </main>
        <TrainingAiSidebar study-tip="当前任务建议：先完成未来 3 个月需求预测，再上传包含历史销量与预测值的散点趋势图。" :progress-items="progressItems" />
    </div>
</template>
<script setup>


import TrainingAiSidebar from "@/views/components/TrainingAiSidebar.vue"
import TrainingTaskToolbar from "@/views/components/TrainingTaskToolbar.vue"
import * as analysisAPI from "@/api/market-demand-mining.js"
import * as echarts from "echarts"
import useUserStore from "@/store/modules/user"
import { ArrowLeft, ArrowRight, CircleCheck, TrendCharts } from "@element-plus/icons-vue"
import { getTrainingTaskByKey } from "@/api/trainingTask"
import { getStudentTrainingAnswer, saveStudentTrainingAnswer, uploadStudentTrainingFile, validatePurchaseDemandForecastStepOne } from "@/api/studentTrainingAnswer"
import { parseTrainingArray } from "@/views/training/taskKeyMap"
import { isStudentDemo } from "@/utils/studentDemo"
const userStore = useUserStore()
const dialogVisible = ref(false)
import codemirror from "@/components/codemirror/index.vue"
import popModel from "@/views/components/popModal.vue"
const { proxy } = getCurrentInstance()
const TASK_KEY = "purchase-demand-forecast"
const PURCHASE_DEMAND_FORECAST_GUIDE_URL = "/file/training-materials/purchase-demand-forecast/18.实训操作说明.docx"
const taskConfig = ref(null)
const activeStep = ref(1)
const saving = ref(false)
const briefOpen = ref(false)
const taskTitle = computed(() => taskConfig.value?.taskName || "采购需求预测")
const taskBackground = computed(() => taskConfig.value?.background || "电商产品采购需求预测用于确定未来一段时间的商品需求量，帮助企业合理安排采购计划，避免库存积压或缺货。")
const taskRequirement = computed(() => taskConfig.value?.requirements || "使用季节指数预测法，根据历史月度采购数据预测未来一年的采购量。")
const taskGoals = computed(() => parseTrainingArray(taskConfig.value?.objectives, ["理解季节指数预测法的核心步骤", "能够计算移动平均与季节指数", "能够预测未来采购需求并输出结论"]))
const configuredSteps = computed(() => parseTrainingArray(taskConfig.value?.steps))
const hasConfiguredSteps = computed(() => configuredSteps.value.length > 0)
const activeStepName = computed(() => configuredSteps.value[activeStep.value - 1] || "采购需求预测")
const progressItems = computed(() => configuredSteps.value.map((text, index) => ({ text, status: index + 1 < activeStep.value ? "done" : index + 1 === activeStep.value ? "doing" : "" })))
const runResultShow = ref(false)
const code = ` X
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
import matplotlib as mpl
from sklearn.linear_model import LinearRegression
mpl.rcParams['font.sans-serif'] = ['SimHei']#SimHeri是中文字体名称
mpl.rcParams['axes.unicode_minus'] = False
# ====================== 1. 数据准备 ======================
data = {
    "Year": [2022]*12 + [2023]*12 + [2024]*12,
    "Month": list(range(1,13)) * 3,
    "Purchase": [
        120, 150, 280, 350, 480, 720, 850, 800, 600, 400, 250, 180,  # 2022
        130, 160, 300, 380, 520, 780, 920, 870, 640, 430, 270, 190,  # 2023
        140, 170, 320, 400, 550, 830, 950, 900, 680, 460, 290, 200   # 2024
    ]
}
df = pd.DataFrame(data)
df["Date"] = pd.to_datetime(df["Year"].astype(str) + "-" + df["Month"].astype(str))
df = df.set_index("Date").sort_index()
# ====================== 2. 计算移动平均值（取整） ======================
# 计算移动平均（计算时保留小数，输出时取整）
df["MA12"] = df["Purchase"].rolling(window=12, center=True).mean()
# ====================== 3. 输出移动平均值（整数形式） ======================
print("历史数据与移动平均值（取整）:")
valid_ma = df.dropna(subset=["MA12"]).copy()
# 对移动平均值四舍五入取整
valid_ma["MA12"] = valid_ma["MA12"].round().astype(int)  # 关键修改点
print(valid_ma[["Purchase", "MA12"]])
# ====================== 4. 季节指数计算 ======================
# 计算时仍使用原始移动平均值保证精度
df["Seasonal_Irregular"] = df["Purchase"] / df["MA12"]
seasonal_index = df.groupby("Month")["Seasonal_Irregular"].mean()
seasonal_index = (seasonal_index / seasonal_index.mean()).round(3)
# ====================== 5. 趋势预测 ======================
trend_data = df.dropna(subset=["MA12"]).copy()
trend_data["Time"] = np.arange(len(trend_data))
model = LinearRegression()
model.fit(trend_data[["Time"]], trend_data["MA12"])
future_time = np.arange(len(trend_data), len(trend_data)+12).reshape(-1, 1)
future_trend = model.predict(future_time)
# ====================== 6. 预测采购量（取整数） ======================
future_dates = pd.date_range(start="2025-01-01", periods=12, freq="MS")
future_df = pd.DataFrame({"Date": future_dates})
future_df["Month"] = future_df["Date"].dt.month
future_df["Trend"] = future_trend.round(1)  # 趋势值保留1位小数用于后续计算
future_df["Season_Index"] = future_df["Month"].map(seasonal_index)
future_df["Forecast"] = (future_df["Trend"] * future_df["Season_Index"]).round().astype(int)
# ====================== 7. 可视化与输出 ======================
plt.figure(figsize=(14, 7))
ax = plt.gca()
# 绘制历史数据与趋势线
plt.plot(df.index, df["Purchase"], label="历史采购量", marker="o", linestyle="-", markersize=6)
plt.plot(trend_data.index, trend_data["MA12"], label="移动平均趋势", linestyle="--", color="darkgreen")
# 绘制预测数据点并添加数值标签
forecast_line = plt.plot(future_df["Date"], future_df["Forecast"],
                        label="2025预测值", color="red", marker="o", linestyle="-")
# 在每个预测点上添加数值标签
for date, value in zip(future_df["Date"], future_df["Forecast"]):
    ax.text(date, value + 20, f'{value}',  # 数值显示在点上方20单位
            ha='center', va='bottom', fontsize=9, color='red',
            bbox=dict(facecolor='white', edgecolor='none', alpha=0.8))  # 白色背景框
# 坐标轴与图例设置
ax.xaxis.set_major_locator(mdates.MonthLocator(interval=3))  # 每3个月显示一个刻度
ax.xaxis.set_major_formatter(mdates.DateFormatter('%Y-%m'))
plt.xticks(rotation=45)
plt.title("采购量预测可视化", fontsize=14)
plt.xlabel("日期", fontsize=12)
plt.ylabel("采购量（件）", fontsize=12)
plt.grid(True, linestyle='--', alpha=0.5)
plt.legend(loc='upper left')
plt.tight_layout()
plt.show()
print("\n季节指数（保留3位小数）:")
print(seasonal_index)
print("\n2025年预测采购量（整数）:")
print(future_df[["Date", "Forecast"]].set_index("Date"))`
const advertisementData = [
    {
        year: 2022,
        jan: 120,
        feb: 150,
        mar: 280,
        apr: 350,
        may: 480,
        jun: 720,
        jul: 850,
        aug: 800,
        sep: 600,
        oct: 400,
        nov: 250,
        dec: 180,
    },
    {
        year: 2023,
        jan: 130,
        feb: 160,
        mar: 300,
        apr: 380,
        may: 520,
        jun: 780,
        jul: 920,
        aug: 870,
        sep: 640,
        oct: 430,
        nov: 270,
        dec: 190,
    },
    {
        year: 2024,
        jan: 140,
        feb: 170,
        mar: 320,
        apr: 400,
        may: 550,
        jun: 830,
        jul: 950,
        aug: 900,
        sep: 680,
        oct: 460,
        nov: 290,
        dec: 200,
    },
]
const tableDatas = ref([
    { month: "2022年1月", actual: 120 },
    { month: "2022年2月", actual: 150 },
    { month: "2022年3月", actual: 280 },
    { month: "2022年4月", actual: 350 },
    { month: "2022年5月", actual: 480 },
    { month: "2022年6月", actual: 720 },
    { month: "2022年7月", actual: 850 },
    { month: "2022年8月", actual: 800 },
    { month: "2022年9月", actual: 600 },
    { month: "2022年10月", actual: 400 },
    { month: "2022年11月", actual: 250 },
    { month: "2022年12月", actual: 180 },
    { month: "2023年1月", actual: 130 },
    { month: "2023年2月", actual: 160 },
    { month: "2023年3月", actual: 300 },
    { month: "2023年4月", actual: 380 },
    { month: "2023年5月", actual: 520 },
    { month: "2023年6月", actual: 780 },
    { month: "2023年7月", actual: 920 },
    { month: "2023年8月", actual: 870 },
    { month: "2023年9月", actual: 640 },
    { month: "2023年10月", actual: 430 },
    { month: "2023年11月", actual: 270 },
    { month: "2023年12月", actual: 190 },
    { month: "2024年1月", actual: 140 },
    { month: "2024年2月", actual: 170 },
    { month: "2024年3月", actual: 320 },
    { month: "2024年4月", actual: 400 },
    { month: "2024年5月", actual: 550 },
    { month: "2024年6月", actual: 830 },
    { month: "2024年7月", actual: 950 },
    { month: "2024年8月", actual: 900 },
    { month: "2024年9月", actual: 680 },
    { month: "2024年10月", actual: 460 },
    { month: "2024年11月", actual: 290 },
    { month: "2024年12月", actual: 200 },
])
const tableData = ref([
    { month: "2022年7月", actual: 850, ma12: null },
    { month: "2022年8月", actual: 800, ma12: null },
    { month: "2022年9月", actual: 600, ma12: null },
    { month: "2022年10月", actual: 400, ma12: null },
    { month: "2022年11月", actual: 250, ma12: null },
    { month: "2022年12月", actual: 180, ma12: null },
    { month: "2023年1月", actual: 130, ma12: null },
    { month: "2023年2月", actual: 160, ma12: null },
    { month: "2023年3月", actual: 300, ma12: null },
    { month: "2023年4月", actual: 380, ma12: null },
    { month: "2023年5月", actual: 520, ma12: null },
    { month: "2023年6月", actual: 780, ma12: null },
    { month: "2023年7月", actual: 920, ma12: null },
    { month: "2023年8月", actual: 870, ma12: null },
    { month: "2023年9月", actual: 640, ma12: null },
    { month: "2023年10月", actual: 430, ma12: null },
    { month: "2023年11月", actual: 270, ma12: null },
    { month: "2023年12月", actual: 190, ma12: null },
    { month: "2024年1月", actual: 140, ma12: null },
    { month: "2024年2月", actual: 170, ma12: null },
    { month: "2024年3月", actual: 320, ma12: null },
    { month: "2024年4月", actual: 400, ma12: null },
    { month: "2024年5月", actual: 550, ma12: null },
    { month: "2024年6月", actual: 830, ma12: null },
    { month: "2024年7月", actual: 950, ma12: null },
])
const tableData1 = ref([
    { month: "1月", index: null },
    { month: "2月", index: null },
    { month: "3月", index: null },
    { month: "4月", index: null },
    { month: "5月", index: null },
    { month: "6月", index: null },
    { month: "7月", index: null },
    { month: "8月", index: null },
    { month: "9月", index: null },
    { month: "10月", index: null },
    { month: "11月", index: null },
    { month: "12月", index: null },
])
const createLinearForecastRows = () => [
    { time: 13, label: "预测第1个月（t=13）", demand: null },
    { time: 14, label: "预测第2个月（t=14）", demand: null },
    { time: 15, label: "预测第3个月（t=15）", demand: null },
]
const linearForecastRows = ref(createLinearForecastRows())
const PROCUREMENT_INITIAL_STOCK = 30
const createProcurementPlanRows = () =>
    createLinearForecastRows().map(({ time, label }) => ({
        time,
        label,
        safetyStock: null,
        openingStock: null,
        purchaseQuantity: null,
    }))
const procurementPlanRows = ref(createProcurementPlanRows())
const procurementPlanExpectedRows = computed(() => {
    let expectedOpeningStock = PROCUREMENT_INITIAL_STOCK

    return linearForecastRows.value.map((forecastRow, index) => {
        const demand = Number(forecastRow?.demand)
        const hasValidDemand = Number.isInteger(demand) && demand >= 0
        const safetyStock = hasValidDemand ? Math.round(demand * 0.1) : null
        const openingStock = hasValidDemand ? expectedOpeningStock : null
        const purchaseQuantity = hasValidDemand
            ? demand + safetyStock - openingStock
            : null

        if (hasValidDemand) {
            expectedOpeningStock = safetyStock
        }

        return {
            time: forecastRow?.time ?? index + 13,
            label: forecastRow?.label || `预测第${index + 1}个月（t=${index + 13}）`,
            demand: hasValidDemand ? demand : null,
            safetyStock,
            openingStock,
            purchaseQuantity,
        }
    })
})
const demandForecastChart = ref({ url: "", name: "" })
const uploadingDemandForecastChart = ref(false)
const forecastData = ref([
    { month: "2025年01月", forecast: "" },
    { month: "2025年02月", forecast: "" },
    { month: "2025年03月", forecast: "" },
    { month: "2025年04月", forecast: "" },
    { month: "2025年05月", forecast: "" },
    { month: "2025年06月", forecast: "" },
    { month: "2025年07月", forecast: "" },
    { month: "2025年08月", forecast: "" },
    { month: "2025年09月", forecast: "" },
    { month: "2025年10月", forecast: "" },
    { month: "2025年11月", forecast: "" },
    { month: "2025年12月", forecast: "" },
])
// 生成完整的月份列表（包括 2024年空隙）
const getFullMonths = () => {
    const months = []
    const startDate = new Date("2022-01-01")
    const endDate = new Date("2025-12-01")
    while (startDate <= endDate) {
        months.push(`${startDate.getFullYear()}年${(startDate.getMonth() + 1).toString().padStart(2, "0")}月`)
        startDate.setMonth(startDate.getMonth() + 1)
    }
    return months
}
/// 合并数据并生成时间轴
const chartData = computed(() => {
    const fullMonths = getFullMonths()
    const actualData = tableDatas.value.map((item) => item.actual)
    const forecastDataArray = Array(fullMonths.length).fill(null)
    forecastData.value.forEach((item, index) => {
        const idx = fullMonths.indexOf(item.month)
        if (idx !== -1) forecastDataArray[idx] = item.forecast
    })
    const ma12Data = tableData.value.map((item) => item.ma12)
    // ma12Data数组头部添加
    ma12Data.unshift(null, null, null, null, null, null)
    return {
        actual: actualData,
        forecast: forecastDataArray,
        ma12: ma12Data,
        months: fullMonths,
    }
})
const drawForecastChart = () => {
    let myChart = echarts.init(proxy.$refs.forecastChart)
    const option = {
        title: {
            text: "采购量预测可视化",
            left: "center",
            textStyle: { fontSize: 16 },
        },
        tooltip: {
            trigger: "axis",
            formatter: function (params) {
                let result = `${params[0].axisValue}<br/>`
                params.forEach((param) => {
                    result += `${param.marker} ${param.seriesName}: ${param.value || "N/A"}${param.seriesName === "指数" ? "" : ""}<br/>`
                })
                return result
            },
        },
        legend: {
            data: ["历史采购量", "移动平均趋势", "2025预测值"],
            top: "8%",
            //   下移一点点
        },
        grid: {
            left: "3%",
            right: "4%",
            bottom: "1%",
            containLabel: true,
        },
        xAxis: {
            type: "category",
            data: chartData.value.months,
            axisLabel: { interval: 0, rotate: 45 },
        },
        yAxis: [
            {
                type: "value",
                name: "采购量(件)",
                axisLabel: { formatter: "{value}" },
                nameGap: 40,
                min: 0,
                nameLocation: "middle",
            },
        ],
        series: [
            {
                name: "历史采购量",
                type: "line",
                yAxisIndex: 0,
                data: chartData.value.actual,
                itemStyle: { color: "#5470c6" },
                lineStyle: { width: 2 },
                connectNulls: false, // 不连接空值
            },
            {
                name: "移动平均趋势",
                type: "line",
                yAxisIndex: 0,
                data: chartData.value.ma12,
                itemStyle: { color: "#91cc75" },
                lineStyle: { type: "dashed", width: 2 },
                connectNulls: false, // 不连接空值
            },
            {
                name: "2025预测值",
                type: "line",
                yAxisIndex: 0,
                data: chartData.value.forecast,
                itemStyle: { color: "#ee6666" },
                lineStyle: { width: 2 },
                connectNulls: false, // 不连接空值
            },
        ],
    }
    myChart.setOption(option)
    // 响应式调整
    window.addEventListener("resize", () => myChart.resize())
}
function downloadPracticeGuide() {
    downloadBuiltInFile(PURCHASE_DEMAND_FORECAST_GUIDE_URL, "18.实训操作说明.docx")
}
function downloadBuiltInFile(url, fileName) {
    const link = document.createElement("a")
    link.href = url
    link.download = fileName
    document.body.appendChild(link)
    link.click()
    document.body.removeChild(link)
}
function clearDemandForecastChart() {
    const imageUrl = String(demandForecastChart.value?.url || "")
    if (imageUrl.startsWith("blob:")) URL.revokeObjectURL(imageUrl)
    demandForecastChart.value = { url: "", name: "" }
}
async function handleDemandForecastChartUpload(event) {
    const file = event?.target?.files?.[0]
    if (event?.target) event.target.value = ""
    if (!file) return

    const acceptedTypes = ["image/png", "image/jpeg", "image/webp"]
    if (!acceptedTypes.includes(file.type)) {
        proxy?.$modal?.msgWarning("请上传 PNG、JPG、JPEG 或 WEBP 格式的图片")
        return
    }
    if (file.size > 5 * 1024 * 1024) {
        proxy?.$modal?.msgWarning("图片大小不能超过 5MB")
        return
    }

    uploadingDemandForecastChart.value = true
    try {
        let url = ""
        if (isStudentDemo()) {
            url = URL.createObjectURL(file)
        } else {
            const formData = new FormData()
            formData.append("file", file)
            const response = await uploadStudentTrainingFile(formData)
            url = response?.url || response?.data?.url || ""
            if (!url) throw new Error("上传成功但未返回文件地址")
        }
        clearDemandForecastChart()
        demandForecastChart.value = { url, name: file.name }
        proxy?.$modal?.msgSuccess("需求预测可视化图形已上传，可点击缩略图预览")
    } catch (error) {
        proxy?.$modal?.msgError(error?.message || "上传失败，请稍后重试")
    } finally {
        uploadingDemandForecastChart.value = false
    }
}
function normalizeActiveStep(value) { if (!configuredSteps.value.length) return 1; return Math.min(Math.max(Number(value) || 1, 1), configuredSteps.value.length) }
function isSectionVisible(section) { return !hasConfiguredSteps.value || activeStep.value === section }
function buildProgress() {
    return {
        activeStep: activeStep.value,
        linearForecastRows: linearForecastRows.value,
        procurementPlanRows: procurementPlanRows.value,
        demandForecastChart: { ...demandForecastChart.value },
        tableData: tableData.value,
        tableData1: tableData1.value,
        forecastData: forecastData.value,
        updatedAt: new Date().toISOString(),
    }
}
function applyProgress(value) {
    if (!value || typeof value !== "object") return
    activeStep.value = normalizeActiveStep(value.activeStep)
    if (Array.isArray(value.linearForecastRows)) {
        const demandByTime = new Map(value.linearForecastRows.map((item) => [Number(item?.time), item?.demand]))
        linearForecastRows.value = createLinearForecastRows().map((row) => ({ ...row, demand: demandByTime.get(row.time) ?? null }))
    }
    if (Array.isArray(value.procurementPlanRows)) {
        const planByTime = new Map(value.procurementPlanRows.map((item) => [Number(item?.time), item]))
        procurementPlanRows.value = createProcurementPlanRows().map((row) => {
            const savedRow = planByTime.get(row.time) || {}
            return {
                ...row,
                safetyStock: savedRow.safetyStock ?? null,
                openingStock: savedRow.openingStock ?? null,
                purchaseQuantity: savedRow.purchaseQuantity ?? null,
            }
        })
    }
    if (value.demandForecastChart && typeof value.demandForecastChart === "object") {
        demandForecastChart.value = {
            url: String(value.demandForecastChart.url || ""),
            name: String(value.demandForecastChart.name || ""),
        }
    }
    if (Array.isArray(value.tableData)) tableData.value = value.tableData
    if (Array.isArray(value.tableData1)) tableData1.value = value.tableData1
    if (Array.isArray(value.forecastData)) forecastData.value = value.forecastData
}
async function persistProgress(saveAction = "SAVE", silent = false) {
    await saveStudentTrainingAnswer(TASK_KEY, { saveAction, currentStep: activeStep.value, step1Answer: JSON.stringify(buildProgress()) })
    if (!silent) proxy?.$modal?.msgSuccess(saveAction === "SUBMIT" ? "提交成功" : "保存成功")
}
function setCurrentStep(step) { activeStep.value = normalizeActiveStep(step); persistProgress("SAVE", true).catch(() => { }) }
function goPreviousStep() { setCurrentStep(activeStep.value - 1) }
function goNextStep() { setCurrentStep(activeStep.value + 1) }
async function saveCurrentProgress() { if (saving.value) return; saving.value = true; try { await persistProgress() } finally { saving.value = false } }
async function loadTaskConfig() { try { const res = await getTrainingTaskByKey(TASK_KEY); taskConfig.value = res?.data || null; activeStep.value = normalizeActiveStep(activeStep.value) } catch (error) { taskConfig.value = null; activeStep.value = 1 } }
async function loadSavedProgress() { try { const res = await getStudentTrainingAnswer(TASK_KEY); const raw = res?.data?.step1Answer; if (raw) applyProgress(JSON.parse(raw)) } catch (error) { /* Historical progress is optional. */ } }
function exportOutcome() { const blob = new Blob([JSON.stringify(buildProgress(), null, 2)], { type: "application/json;charset=utf-8" }); const url = URL.createObjectURL(blob); const link = document.createElement("a"); link.href = url; link.download = `${taskTitle.value}-实训成果.json`; link.click(); URL.revokeObjectURL(url) }
function closeCode() { runResultShow.value = false }
function isInteger(value) {
    return Number.isInteger(Number(value))
}
function validateProcurementPlan() {
    const expectedRows = procurementPlanExpectedRows.value
    if (expectedRows.some((row) => row.demand === null)) {
        proxy?.$modal?.msgWarning("请先完成第 1 步，填写未来 3 个月的预测销量")
        return false
    }

    for (let index = 0; index < expectedRows.length; index += 1) {
        const actualRow = procurementPlanRows.value[index]
        const expectedRow = expectedRows[index]
        const monthName = `第 ${index + 1} 个月`

        if (
            !isInteger(actualRow?.safetyStock)
            || !isInteger(actualRow?.openingStock)
            || !isInteger(actualRow?.purchaseQuantity)
        ) {
            proxy?.$modal?.msgWarning(`请将${monthName}的安全库存、期初库存和采购量填写为整数`)
            return false
        }
        if (Number(actualRow.safetyStock) !== expectedRow.safetyStock) {
            proxy?.$modal?.msgWarning(`${monthName}安全库存计算不正确，应为 ${expectedRow.safetyStock} 台`)
            return false
        }
        if (Number(actualRow.openingStock) !== expectedRow.openingStock) {
            proxy?.$modal?.msgWarning(`${monthName}期初库存不正确，应为 ${expectedRow.openingStock} 台`)
            return false
        }
        if (Number(actualRow.purchaseQuantity) !== expectedRow.purchaseQuantity) {
            proxy?.$modal?.msgWarning(`${monthName}采购量计算不正确，应为 ${expectedRow.purchaseQuantity} 台`)
            return false
        }
    }
    return true
}
// 提交
const submitTask = async () => {
    if (activeStep.value === 1) {
        if (saving.value) return
        saving.value = true
        try {
            const response = await validatePurchaseDemandForecastStepOne({
                items: linearForecastRows.value.map(({ time, demand }) => ({ time, demand })),
            })
            const normalizedItems = response?.data?.items
            if (Array.isArray(normalizedItems)) {
                const demandByTime = new Map(normalizedItems.map((item) => [Number(item.time), item.demand]))
                linearForecastRows.value = createLinearForecastRows().map((row) => ({ ...row, demand: demandByTime.get(row.time) ?? null }))
            }
            await persistProgress("SUBMIT")
        } finally {
            saving.value = false
        }
        return
    }
    if (activeStep.value === 2) {
        if (!demandForecastChart.value.url) {
            proxy?.$modal?.msgWarning("请上传需求预测可视化图形")
            return
        }
        if (saving.value) return
        saving.value = true
        try {
            await persistProgress("SUBMIT")
        } finally {
            saving.value = false
        }
        return
    }
    if (activeStep.value === 3) {
        if (!validateProcurementPlan() || saving.value) return
        saving.value = true
        try {
            await persistProgress("SUBMIT")
        } finally {
            saving.value = false
        }
        return
    }
    // 获取monthlyData月度数据
    const monthlyData = tableData.value.map((item) => item.ma12)
    // 获取forecastData预测数据
    const seasonalIndex = tableData1.value.map((item) => item.index)
    // 调用接口
    const demandForecast = forecastData.value.map((item) => item.forecast)
    //   判断都填写完毕了没
    if (monthlyData.includes(null) || seasonalIndex.includes(null) || demandForecast.includes(null)) {
        proxy.$modal.msgWarning("请填写完整的数据")
        return
    }
    if (saving.value) return
    saving.value = true
    try {
        await analysisAPI.procurementDemandForecastSubmit({
            monthlyData: JSON.stringify(monthlyData),
            seasonalIndex: JSON.stringify(seasonalIndex),
            demandForecast: JSON.stringify(demandForecast),
            userId: userStore.userInfo.userId,
        })
        await persistProgress("SUBMIT")
    } finally { saving.value = false }
}
// 回显
const echoData = async () => {
    try {
        const res = await analysisAPI.procurementDemandForecastEcho({ userId: userStore.userInfo.userId })
        if (!res.data) return
        const { monthlyData, seasonalIndex, demandForecast } = res.data
        JSON.parse(monthlyData).forEach((item, index) => {
            tableData.value[index].ma12 = item
            forecastData.value[index].forecast = JSON.parse(demandForecast)[index]
        })
        JSON.parse(seasonalIndex).forEach((item, index) => {
            tableData1.value[index].index = item
        })
    } catch (error) {
        // The standard page remains usable without legacy submitted data.
    }
}
// 重新实训
const resetTask = async () => {
    if (saving.value) return
    saving.value = true
    try {
        linearForecastRows.value = createLinearForecastRows()
        procurementPlanRows.value = createProcurementPlanRows()
        clearDemandForecastChart()
        await analysisAPI.procurementDemandForecastReTrain({ userId: userStore.userInfo.userId })
        // 清空对应数据
        forecastData.value.forEach((item) => {
            item.forecast = null
        })
        tableData.value.forEach((item) => {
            item.ma12 = null
        })
        tableData1.value.forEach((item) => {
            item.index = null
        })
        activeStep.value = 1
        await persistProgress("RESET", true)
        proxy.$modal.msgSuccess("清空填写成功")
    } finally { saving.value = false }
}
const go = () => {
    window.open("https://jrdsj.sztzjy.com:8000/user/zy84cf311/lab")
}
onMounted(async () => {
    await loadTaskConfig()
    await echoData()
    await loadSavedProgress()
})
</script>

<style lang="scss" scoped>
/* ============================================================
 * 教育蓝极简 · 采购需求预测页面
 * ============================================================ */
.channel {
    /* 主色：教育蓝 */
    --student-accent: #2563eb;
    --student-accent-deep: #1d4ed8;
    --student-accent-light: #3b82f6;
    --student-accent-soft: #eff6ff;
    /* 语义色 */
    --student-danger: #ef4444;
    --student-success: #2ba471;
    /* 三层次标识 */
    --student-layer-1: #1d4ed8;
    --student-layer-2: #3b82f6;
    --student-layer-3: #93c5fd;
    /* 结构色 */
    --student-panel-border: #e5e7eb;
    --student-card-bg: #ffffff;
    --student-panel-bg: #fafbfc;
    --student-text: #1f2937;
    --student-text-secondary: #6b7280;
    /* Element Plus 主色 */
    --el-color-primary: #2563eb;
    --el-color-primary-light-3: #60a5fa;
    --el-color-primary-light-5: #93c5fd;
    --el-color-primary-light-7: #bfdbfe;
    --el-color-primary-light-8: #dbeafe;
    --el-color-primary-light-9: #eff6ff;
    --el-color-primary-dark-2: #1d4ed8;
    --el-input-hover-border-color: #3b82f6;
    --el-input-focus-border-color: #2563eb;
    --el-input-focus-ring-color: rgba(59, 130, 246, 0.15);
    /* 字号梯度统一继承 .student-training-shell，页面不再重复声明 */

    min-width: 0;
    color: var(--student-text);
    background: var(--student-card-bg);

    :deep(.el-table) {
        --el-table-border-color: var(--student-panel-border);
        --el-table-header-bg-color: #fafbfc;
        --el-table-header-text-color: var(--student-text);
        --el-table-row-hover-bg-color: rgba(59, 130, 246, 0.05);
        --el-table-bg-color: transparent;
        --el-table-tr-bg-color: transparent;
        --el-table-text-color: var(--student-text);
        overflow: hidden;
        margin-top: 12px;
        border: 1px solid var(--student-panel-border);
        border-radius: 12px;
        background: var(--student-card-bg);
    }

    :deep(.el-table th.el-table__cell) {
        color: var(--student-text) !important;
        background: #fafbfc !important;
        font-weight: 800;
    }

    :deep(.el-input__wrapper) {
        min-height: 36px;
        border: 1px solid var(--student-panel-border);
        border-radius: 7px;
        box-shadow: none !important;
        background: var(--student-card-bg);
    }

    :deep(.el-input__inner) {
        color: var(--student-text);
    }

    :deep(.el-input__inner::placeholder) {
        color: var(--student-text-secondary);
    }

    :deep(.el-input__wrapper.is-focus) {
        border-color: var(--student-accent);
        box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12) !important;
    }

    :deep(.el-button:not(.material-button)) {
        border-color: var(--student-accent) !important;
        color: #ffffff !important;
        background: var(--student-accent) !important;
    }

    :deep(.el-button:not(.material-button):hover) {
        border-color: var(--student-accent-deep) !important;
        color: #ffffff !important;
        background: var(--student-accent-deep) !important;
    }

    .online {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 10px;
        padding: 10px 12px;
        border: 1px solid var(--student-panel-border);
        border-radius: 10px;
        background: var(--student-panel-bg);
    }

    .online span {
        color: var(--student-text);
    }

    .task-action-strip {
        margin: 0;
        padding: 10px 16px;
    }

    .task-action-strip :deep(.training-task-toolbar) {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: flex-end;
        gap: 8px;
    }
}

.channel {
    display: grid;
    gap: 24px;
    min-height: calc(100vh - 76px);
    padding: 24px 24px 32px;
    color: var(--student-text);
    background: var(--student-card-bg);

    .training-core {
        min-width: 0;
        padding: 28px;
        border: 1px solid var(--student-panel-border);
        border-radius: 36px;
        background: var(--student-card-bg);
        box-shadow: 0 6px 18px rgba(0, 0, 0, .06);
    }

    .task-header {
        position: relative;
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
        gap: 16px;
        margin: 0;
        padding: 18px 20px 18px 24px;
        border: 1px solid var(--student-panel-border);
        border-radius: 12px;
        background: var(--student-card-bg);
        overflow: hidden;

        &::before {
            content: "";
            position: absolute;
            top: 0;
            bottom: 0;
            left: 0;
            width: 4px;
            background: var(--student-accent);
        }
    }

    .task-head-main {
        display: grid;
        justify-items: start;
        gap: 8px;
        min-width: 0;
        flex: 1 1 auto;
    }

    .task-title {
        margin: 0;
        color: var(--student-text);
        font-size: var(--student-fs-display);
        font-weight: 700;
        line-height: 1.35;
    }

    .task-brief {
        margin: 0;
        color: var(--student-text-secondary);
        font-size: var(--student-fs-body-sm);
        line-height: 1.6;
    }

    .task-brief-text {
        display: -webkit-box;
        overflow: hidden;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;
    }

    .task-brief-toggle {
        padding: 0;
        border: 0;
        color: var(--student-accent-deep);
        background: transparent;
        font: inherit;
        font-weight: 700;
        cursor: pointer;

        &:hover {
            text-decoration: underline;
        }
    }

    .task-brief-more {
        display: grid;
        gap: 6px;
        margin-top: 8px;
        padding-top: 8px;
        border-top: 1px solid var(--student-panel-border);

        b {
            color: var(--student-text);
            font-size: var(--student-fs-body-sm);
        }

        ul {
            display: grid;
            gap: 4px;
            margin: 0;
            padding-left: 18px;
        }

        p {
            margin: 0;
        }
    }

    .task-card,
    .step-card {
        border: 1px solid var(--student-panel-border);
        border-radius: 26px;
        background: var(--student-card-bg);
    }

    .task-card {
        margin-top: 28px;
        padding: 18px 22px 22px;
    }

    .workbench-head {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        gap: 18px;
        margin-bottom: 22px;
        padding-bottom: 18px;
        border-bottom: 1px solid var(--student-panel-border);
    }

    .section-eyebrow {
        margin: 0;
        color: var(--student-accent);
        font-size: var(--student-fs-caption);
        font-weight: 800;
        line-height: 1.4;
    }

    .workbench-head h3 {
        margin: 4px 0 8px;
        color: var(--student-text);
        font-size: var(--student-fs-h1);
        font-weight: 800;
        line-height: 1.3;
    }

    .workbench-description {
        margin: 0;
        color: var(--student-text-secondary);
        font-size: var(--student-fs-body);
        line-height: 1.8;
    }

    .workbench-actions {
        display: flex;
        flex-wrap: wrap;
        justify-content: flex-end;
        margin-left: auto;
        gap: 10px;
        flex-shrink: 0;
    }

    .outline-action,
    .btn-nav {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        min-height: 36px;
        height: 36px;
        padding: 0 14px;
        border: 1px solid var(--student-panel-border);
        border-radius: 8px;
        color: var(--student-text);
        background: var(--student-accent-soft);
        font: inherit;
        font-size: var(--student-fs-button);
        font-weight: 800;
        cursor: pointer;
    }

    .step-indicator {
        display: flex;
        align-items: center;
        gap: 12px;
        width: calc(100% + 24px);
        min-height: 0;
        margin: 0 -12px 32px;
        padding: 18px 22px;
        overflow-x: auto;
        border: 1px solid var(--student-panel-border);
        border-radius: 18px;
        background: var(--student-card-bg);
        box-shadow: inset 0 1px 0 rgba(31, 41, 55, 0.04);
    }

    .step-tab {
        display: flex;
        flex: 1 0 145px;
        align-items: center;
        min-height: 66px;
        padding: 8px 10px;
        border: 1px solid var(--student-panel-border);
        border-radius: 8px;
        color: var(--student-text-secondary);
        background: var(--student-card-bg);
        font: inherit;
        font-size: var(--student-fs-body);
        font-weight: 800;
        text-align: left;
        cursor: pointer;
        transition: transform .2s, color .2s, background .2s, border-color .2s, box-shadow .2s;
    }

    .step-tab:hover,
    .step-tab:focus-visible {
        transform: translateY(-2px);
        border-color: var(--student-accent);
        color: #ffffff;
        background: var(--student-accent-light);
        box-shadow: 0 8px 18px rgba(0, 0, 0, .1);
        outline: none;
    }

    .step-tab.active {
        border-color: var(--student-accent);
        color: #ffffff;
        background: var(--student-accent);
        box-shadow: 0 8px 20px rgba(31, 41, 55, 0.18);
    }

    .step-marker {
        display: inline-flex;
        flex: 0 0 38px;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        border: 1px solid var(--student-panel-border);
        border-radius: 50%;
        color: var(--student-text-secondary);
        background: var(--student-card-bg);
        font-size: var(--student-fs-body-sm);
        font-weight: 900;
    }

    .step-copy {
        display: grid;
        min-width: 0;
        gap: 4px;
        margin-left: 10px;
    }

    .step-copy strong {
        display: -webkit-box;
        overflow: hidden;
        color: inherit;
        font-size: var(--student-fs-body);
        line-height: 1.25;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }

    .step-copy span {
        color: var(--student-text-secondary);
        font-size: var(--student-fs-caption);
        font-weight: 700;
    }

    .step-tab.active .step-marker {
        border-color: var(--student-accent);
        color: #ffffff;
        background: var(--student-accent);
        box-shadow: 0 0 0 4px rgba(31, 41, 55, 0.1);
    }

    .step-tab.complete .step-marker {
        border-color: var(--student-success);
        color: #ffffff;
        background: var(--student-success);
    }

    .step-connector {
        flex: 0 0 28px;
        height: 2px;
        background: var(--student-panel-border);
        color: var(--student-text-secondary);
        font-size: var(--student-fs-h2);
        line-height: 0;
        text-align: right;
    }

    .step-connector.complete {
        background: var(--student-success);
        color: var(--student-success);
    }

    .step-card {
        margin-top: 32px;
        padding: 18px 22px 22px;
    }

    .step-indicator+.step-card,
    .workbench-head+.step-card {
        margin-top: 0;
    }

    .step-title-row {
        margin-bottom: 14px;
    }

    .step-title-row h3 {
        margin: 4px 0 0;
        color: var(--student-text);
        font-size: var(--student-fs-h2);
        font-weight: 900;
        line-height: 1.3;
    }

    .caseBacktitle {
        display: flex;
        align-items: center;
        gap: 8px;
        margin: 20px 0 10px;
        color: var(--student-text-secondary);
        font-size: var(--student-fs-h2);
        font-weight: 800;
    }

    .caseBacktitle img {
        display: none;
    }

    .step-card>p {
        color: var(--student-text-secondary);
        font-size: var(--student-fs-body);
        line-height: 1.8;
    }

    :deep(.el-table) {
        width: 100% !important;
        max-width: 100%;
        border-radius: 18px;
    }

    :deep(.el-table th.el-table__cell) {
        background: #fafbfc !important;
    }

    :deep(.el-input__wrapper) {
        min-height: 42px;
        border-radius: 14px;
        background: #ffffff;
    }

    .online {
        border-radius: 14px;
        background: var(--student-panel-bg);
    }

    .step-navigation {
        display: flex;
        justify-content: center;
        gap: 14px;
        margin-top: 22px;
    }

    .btn-nav.btn-save,
    .btn-nav.btn-primary {
        border-color: var(--student-accent);
        color: #ffffff;
        background: var(--student-accent);
        min-height: 36px;
        height: 36px;
        padding: 0 14px;
        border-radius: 8px;
    }

    .btn-nav:disabled {
        cursor: not-allowed;
        opacity: .45;
    }
}

@media (max-width: 1100px) {
    .channel {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .channel {
        padding: 14px;

        .training-core {
            padding: 18px;
            border-radius: 24px;
        }

        .workbench-head,
        .workbench-actions,
        .step-navigation {
            flex-direction: column;
            align-items: stretch;
        }

        .workbench-actions,
        .outline-action,
        .btn-nav {
            width: 100%;
        }

        .step-indicator {
            align-items: stretch;
            flex-direction: column;
            width: 100%;
            margin-right: 0;
            margin-left: 0;
            overflow: visible;
            border-radius: 20px;
        }

        .step-tab {
            flex: 0 0 auto;
            width: 100%;
        }

        .step-connector {
            flex: 0 0 22px;
            width: 2px;
            height: 22px;
            margin-left: 29px;
            text-align: center;
            writing-mode: vertical-rl;
        }
    }
}

.step-tab.active {
    border-color: var(--student-accent);
    color: #ffffff;
    background: var(--student-accent);
    box-shadow: 0 0 14px rgba(31, 41, 55, 0.12);
}

.step-tab.active .step-marker {
    border-color: var(--student-accent);
    color: #ffffff;
    background: var(--student-accent);
    box-shadow: 0 0 0 5px rgba(31, 41, 55, 0.1);
}

.step-tab.complete {
    color: var(--student-text-secondary);
}

.step-tab.complete .step-marker {
    border-color: var(--student-success);
    color: #ffffff;
    background: var(--student-success);
}

.step-connector.complete {
    background: var(--student-success);
    color: var(--student-success);
}

/* Standard page step navigation */
.step-indicator {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0;
    width: calc(100% + 24px);
    margin: 0 -12px 32px;
    padding: 18px 22px;
    overflow-x: auto;
    border: 1px solid var(--student-panel-border);
    border-radius: 18px;
    background: var(--student-card-bg);
    box-shadow: inset 0 1px 0 rgba(31, 41, 55, 0.04);
    scrollbar-width: thin;
}

.step-tab {
    display: flex;
    flex: 1 0 145px;
    align-items: center;
    min-width: 0;
    min-height: 66px;
    padding: 8px 10px;
    border: 1px solid var(--student-panel-border);
    border-radius: 8px;
    color: var(--student-text-secondary);
    background: var(--student-card-bg);
    box-shadow: inset 0 1px 0 rgba(31, 41, 55, 0.03);
    font: inherit;
    font-size: var(--student-fs-body);
    font-weight: 800;
    text-align: left;
    cursor: pointer;
    transition: transform .2s ease, color .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease;
}

.step-tab:hover {
    transform: translateY(-2px);
    border-color: var(--student-accent);
    color: #ffffff;
    background: var(--student-accent-light);
    box-shadow: 0 7px 18px rgba(0, 0, 0, .1);
}

.step-tab:hover .step-action {
    color: #ffffff;
}

.step-tab:focus-visible {
    outline: 2px solid var(--student-accent);
    outline-offset: 2px;
}

.step-tab.active {
    border-color: var(--student-accent);
    color: #ffffff;
    background: var(--student-accent);
    box-shadow: 0 0 14px rgba(31, 41, 55, 0.12);
}

.step-marker {
    display: inline-flex;
    flex: 0 0 38px;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--student-panel-border);
    border-radius: 50%;
    color: var(--student-text-secondary);
    background: var(--student-accent-soft);
    box-shadow: inset 0 0 12px rgba(31, 41, 55, 0.04);
    font-size: var(--student-fs-caption);
    font-weight: 900;
    letter-spacing: .04em;
}

.step-copy {
    display: grid;
    min-width: 0;
    gap: 4px;
    margin-left: 10px;
}

.step-name {
    display: -webkit-box;
    overflow: hidden;
    color: inherit;
    font-size: var(--student-fs-body);
    font-weight: 800;
    line-height: 1.25;
    text-overflow: ellipsis;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.step-action {
    color: var(--student-text-secondary);
    font-size: var(--student-fs-caption);
    font-weight: 800;
    letter-spacing: .06em;
    line-height: 1;
}

.step-tab.active .step-marker {
    border-color: var(--student-accent);
    color: #ffffff;
    background: var(--student-accent);
    box-shadow: 0 0 0 5px rgba(31, 41, 55, 0.1);
}

.step-tab.complete .step-marker {
    border-color: var(--student-success);
    color: #ffffff;
    background: var(--student-success);
}

.step-connector {
    position: relative;
    flex: 0 1 40px;
    min-width: 18px;
    height: 2px;
    margin: 0 8px;
    overflow: visible;
    background: var(--student-panel-border);
}

.step-connector::after {
    position: absolute;
    top: 50%;
    right: -1px;
    width: 6px;
    height: 6px;
    border-top: 1px solid var(--student-text-secondary);
    border-right: 1px solid var(--student-text-secondary);
    content: "";
    transform: translateY(-50%) rotate(45deg);
}

.step-tab.complete+.step-connector {
    background: var(--student-success);
}

.step-tab.complete+.step-connector::after {
    border-color: var(--student-success);
}

@media (max-width:900px) {
    .step-indicator {
        align-items: stretch;
        flex-direction: column;
        width: 100%;
        margin-right: 0;
        margin-left: 0;
        overflow: visible;
        border-radius: 20px;
    }

    .step-tab {
        flex: 0 0 auto;
        width: 100%;
    }

    .step-connector {
        flex: 0 0 20px;
        min-width: 0;
        width: 2px;
        height: 20px;
        margin-left: 29px;
    }
}

.workbench-head--actions-only {
    justify-content: flex-end;
    margin-bottom: 18px;
    padding-bottom: 0;
    border-bottom: 0;
}

.linear-forecast-intro {
    margin: 0 0 22px;
    color: var(--student-text);
    font-size: var(--student-fs-h2);
    line-height: 1.85;
}

.linear-forecast-panel {
    overflow: hidden;
    border-radius: 16px;
}

.linear-forecast-table {
    min-width: 640px;
    margin-top: 0 !important;
}

.linear-forecast-input {
    width: min(100%, 320px);
}

.linear-forecast-guide {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-top: 28px;
    padding: 18px 20px;
    border: 1px solid var(--student-panel-border);
    border-radius: 14px;
    background: var(--student-panel-bg);
}

.linear-forecast-guide ol {
    margin: 8px 0 0;
    padding-left: 22px;
    color: var(--student-text-secondary);
    line-height: 1.8;
}

.procurement-plan-intro {
    margin: 0 0 18px;
    color: var(--student-text);
    font-size: var(--student-fs-h2);
    line-height: 1.85;
}

.procurement-plan-rules {
    margin-bottom: 20px;
    padding: 16px 20px;
    border: 1px solid var(--student-panel-border);
    border-radius: 14px;
    background: var(--student-panel-bg);
}

.procurement-plan-rules h4 {
    margin: 0;
    color: var(--student-text);
    font-size: var(--student-fs-h2);
}

.procurement-plan-rules ol {
    margin: 10px 0 8px;
    padding-left: 22px;
    color: var(--student-text-secondary);
    line-height: 1.8;
}

.procurement-plan-formula {
    margin: 0;
    color: var(--student-accent) !important;
    font-weight: 800;
}

.procurement-plan-table-wrap {
    overflow-x: auto;
    border-radius: 16px;
}

.procurement-plan-table {
    min-width: 960px;
    margin-top: 0 !important;
}

.procurement-plan-readonly {
    color: var(--student-accent);
    font-weight: 800;
}

.procurement-plan-input {
    width: min(100%, 160px);
}

.procurement-plan-hint {
    margin: 14px 0 0;
    color: var(--student-text-secondary) !important;
    font-size: var(--student-fs-body) !important;
    line-height: 1.7;
}

.guide-title {
    margin: 0;
    color: var(--student-text) !important;
    font-weight: 800;
}

.practice-guide-button {
    flex: 0 0 auto;
}

.forecast-visual-intro {
    margin: 0 0 22px;
    color: var(--student-text);
    font-size: var(--student-fs-h2);
    line-height: 1.85;
}

.forecast-visual-upload-card {
    display: grid;
    min-height: 330px;
    padding: 28px;
    border: 1px solid var(--student-panel-border);
    border-radius: 16px;
    background: var(--student-card-bg);
    place-items: center;
}

.forecast-visual-dropzone {
    position: relative;
    display: grid;
    width: min(100%, 620px);
    min-height: 210px;
    padding: 28px;
    overflow: hidden;
    border: 1px dashed var(--student-panel-border);
    border-radius: 14px;
    color: var(--student-text);
    background: var(--student-accent-soft);
    cursor: pointer;
    place-items: center;
    gap: 10px;
    text-align: center;
    transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.forecast-visual-dropzone:hover {
    border-color: var(--student-accent);
    background: var(--student-accent-soft);
}

.forecast-visual-dropzone.is-uploading {
    cursor: wait;
    opacity: 0.72;
}

.forecast-visual-dropzone input {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
}

.forecast-visual-dropzone strong {
    font-size: var(--student-fs-h2);
}

.forecast-visual-dropzone span:last-child {
    color: var(--student-text-secondary);
    font-size: var(--student-fs-body-sm);
}

.forecast-visual-upload-icon {
    color: var(--student-accent);
    font-size: 34px;
    font-weight: 900;
    line-height: 1;
}

.forecast-visual-preview {
    display: flex;
    align-items: center;
    width: min(100%, 760px);
    min-height: 210px;
    gap: 24px;
    padding: 18px;
    border: 1px solid var(--student-panel-border);
    border-radius: 14px;
    background: #ffffff;
}

.forecast-visual-preview :deep(.el-image) {
    flex: 0 0 330px;
    width: 330px;
    height: 190px;
    border: 1px solid var(--student-panel-border);
    border-radius: 10px;
    background: var(--student-panel-bg);
    cursor: zoom-in;
}

.forecast-visual-file-meta {
    display: flex;
    flex-direction: column;
    min-width: 0;
    gap: 10px;
}

.forecast-visual-file-meta strong {
    color: var(--student-text);
    line-height: 1.6;
    word-break: break-all;
}

.forecast-visual-file-meta span {
    color: var(--student-text-secondary);
    font-size: var(--student-fs-body-sm);
}

.forecast-visual-replace {
    align-self: flex-start;
    padding: 7px 13px;
    border: 1px solid var(--student-panel-border);
    border-radius: 7px;
    color: var(--student-text);
    background: var(--student-accent-soft);
    cursor: pointer;
    font: inherit;
    font-size: var(--student-fs-body-sm);
    font-weight: 700;
}

.forecast-visual-replace:hover {
    border-color: var(--student-accent);
    background: var(--student-accent-soft);
}

.forecast-visual-guide {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-top: 28px;
    padding: 18px 20px;
    border: 1px solid var(--student-panel-border);
    border-radius: 14px;
    background: var(--student-panel-bg);
}

.forecast-visual-guide ol {
    margin: 8px 0 0;
    padding-left: 22px;
    color: var(--student-text-secondary);
    line-height: 1.8;
}

@media (max-width: 900px) {
    .linear-forecast-guide {
        align-items: stretch;
        flex-direction: column;
    }

    .procurement-plan-rules {
        padding: 14px 16px;
    }

    .forecast-visual-preview,
    .forecast-visual-guide {
        align-items: stretch;
        flex-direction: column;
    }

    .forecast-visual-preview :deep(.el-image) {
        flex-basis: auto;
        width: 100%;
        height: 190px;
    }

    .practice-guide-button {
        width: 100%;
    }
}
</style>

<style lang="scss">
/* ============================================================
 * 教育蓝极简换肤 · channel/index.vue
 * ============================================================ */

/* 画布背景 */
#app .studentLayout .app-main:has(.channel) {
    background: #ffffff !important;
}

/* el-table 基础换肤 */
:has(.channel) {
    .el-table {
        --el-table-bg-color: #ffffff !important;
        --el-table-tr-bg-color: transparent !important;
        --el-table-header-bg-color: #fafbfc !important;
        --el-table-row-hover-bg-color: rgba(37, 99, 235, 0.04) !important;
        line-height: 1.55;
    }
}

/* ============================================================
 * 步骤导航：分段连接胶囊（教育蓝极简）
 * ============================================================ */
#app .studentLayout .app-main:has(.channel) .step-indicator {
    display: flex !important;
    flex-wrap: nowrap !important;
    align-items: stretch !important;
    justify-content: center !important;
    gap: 0 !important;
    width: 100% !important;
    margin: 0 0 20px !important;
    padding: 0 !important;
    border: none !important;
    border-radius: 0 !important;
    background: transparent !important;
    box-shadow: none !important;

    .step-tab {


        display: flex !important;
        flex-direction: row !important;
        align-items: center !important;
        justify-content: center !important;
        gap: 8px !important;
        min-width: 0 !important;
        height: auto !important;
        min-height: 40px !important;
        margin: 0 !important;
        padding: 8px 14px !important;
        border: 1px solid #e5e7eb !important;
        border-right: none !important;
        border-radius: 0 !important;
        background: #ffffff !important;
        box-shadow: none !important;
        color: #6b7280 !important;
        font-size: var(--student-fs-body) !important;
        font-weight: 600 !important;
        line-height: 1.3 !important;
        white-space: normal !important;
        text-align: center !important;
        cursor: pointer;
        transition: all 0.16s ease !important;

        &:first-child {
            border-radius: 8px 0 0 8px !important;
        }

        &:last-child {
            border-radius: 0 8px 8px 0 !important;
            border-right: 1px solid #e5e7eb !important;
        }

        .step-bar {
            display: none !important;
        }

        .step-no,
        .step-marker {
            position: static !important;
            flex: 0 0 auto !important;
            display: inline-flex !important;
            align-items: center !important;
            justify-content: center !important;
            min-width: 22px !important;
            height: 22px !important;
            padding: 0 5px !important;
            border-radius: 6px !important;
            background: #f3f4f6 !important;
            color: #6b7280 !important;
            font-family: var(--student-font-data), ui-monospace, "SF Mono", Consolas, monospace !important;
            font-size: var(--student-fs-body-sm) !important;
            font-weight: 700 !important;
            line-height: 1 !important;
            transition: all 0.16s ease !important;

            &::after {
                display: none !important;
            }
        }

        .step-name {
            color: inherit !important;
        }

        .step-copy {
            margin-left: 0 !important;
            gap: 4px !important;
        }

        &:hover:not(.active):not(.complete) {
            border-color: #2563eb !important;
            background: #eff6ff !important;
            color: #2563eb !important;
            z-index: 1 !important;

            .step-no,
            .step-marker {
                background: #2563eb !important;
                color: #ffffff !important;
            }
        }

        &.complete:not(.active) {
            border-color: #e5e7eb !important;
            color: #374151 !important;

            .step-no,
            .step-marker {
                background: rgba(43, 164, 113, 0.12) !important;
                color: #16915f !important;
            }

            &:hover {
                border-color: #2ba471 !important;
                background: #f0fdf6 !important;
                z-index: 1 !important;

                .step-no,
                .step-marker {
                    background: #2ba471 !important;
                    color: #ffffff !important;
                }
            }
        }

        &.active {
            border-color: #2563eb !important;
            background: #2563eb !important;
            color: #ffffff !important;
            font-weight: 700 !important;
            z-index: 2 !important;

            .step-no,
            .step-marker {
                background: #ffffff !important;
                color: #2563eb !important;
            }

            &:hover {
                background: #1d4ed8 !important;
                border-color: #1d4ed8 !important;
            }
        }
    }

    .step-connector {
        display: none !important;
    }
}

/* ============================================================
 * 共用组件换肤：TrainingMaterialButton 资料按钮
 * ============================================================ */
.channel .workbench-actions .material-button.el-button {
    height: 34px !important;
    min-height: 34px !important;
    border: 1px solid rgba(37, 99, 235, 0.35) !important;
    border-radius: 8px !important;
    color: #2563eb !important;
    background: #ffffff !important;
    font-size: var(--student-fs-body) !important;
    font-weight: 600 !important;
    transition:
        border-color 0.16s ease,
        background 0.16s ease,
        color 0.16s ease,
        box-shadow 0.16s ease !important;

    &:hover {
        border-color: #2563eb !important;
        color: #2563eb !important;
        background: #eff6ff !important;
        box-shadow: 0 2px 6px rgba(37, 99, 235, 0.12) !important;
    }

    &.is-plain {
        border-color: #e5e7eb !important;
        color: #9ca3af !important;

        &:hover {
            border-color: #e5e7eb !important;
            color: #9ca3af !important;
            background: #ffffff !important;
            box-shadow: none !important;
        }
    }
}

/* ============================================================
 * 顶部导出按钮（outline-action）
 * ============================================================ */
.channel .workbench-actions>button.outline-action {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 6px !important;
    height: 34px !important;
    min-height: 34px !important;
    padding: 0 14px !important;
    border: 1px solid rgba(37, 99, 235, 0.35) !important;
    border-radius: 8px !important;
    color: #2563eb !important;
    background: #ffffff !important;
    font-size: var(--student-fs-body) !important;
    font-weight: 600 !important;
    line-height: 1 !important;
    transition:
        border-color 0.16s ease,
        background 0.16s ease,
        color 0.16s ease,
        box-shadow 0.16s ease !important;

    &:hover {
        border-color: #2563eb !important;
        color: #2563eb !important;
        background: #eff6ff !important;
        box-shadow: 0 2px 6px rgba(37, 99, 235, 0.12) !important;
        transform: none !important;
    }
}

/* ============================================================
 * 底部步骤按钮（task-actions > button）
 * ============================================================ */
.channel .task-actions {
    gap: 14px !important;
    margin-top: 20px !important;
}

.channel .task-actions>button {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
    height: 34px !important;
    min-height: 34px !important;
    padding: 0 14px !important;
    border: 1px solid rgba(37, 99, 235, 0.35) !important;
    border-radius: 8px !important;
    color: #2563eb !important;
    background: #ffffff !important;
    font-size: var(--student-fs-body) !important;
    font-weight: 600 !important;
    line-height: 1 !important;
    transition:
        transform 0.16s ease,
        border-color 0.16s ease,
        background 0.16s ease,
        box-shadow 0.16s ease !important;
}

.channel .task-actions>button:hover:not(:disabled) {
    transform: translateY(-1px) !important;
    border-color: #2563eb !important;
    color: #2563eb !important;
    background: #eff6ff !important;
    box-shadow: 0 3px 10px rgba(37, 99, 235, 0.12) !important;
}

/* 主按钮（btn-primary / btn-submit） */
.channel .task-actions>button.btn-primary,
.channel .task-actions>button.btn-submit {
    border-color: #2563eb !important;
    color: #ffffff !important;
    background: #2563eb !important;
    box-shadow: 0 3px 10px rgba(37, 99, 235, 0.28) !important;
}

.channel .task-actions>button.btn-primary:hover:not(:disabled),
.channel .task-actions>button.btn-submit:hover:not(:disabled) {
    border-color: #1d4ed8 !important;
    color: #ffffff !important;
    background: #1d4ed8 !important;
    box-shadow: 0 5px 14px rgba(29, 78, 216, 0.32) !important;
}

/* ============================================================
 * 步骤导航按钮（step-navigation）
 * ============================================================ */
.channel .step-navigation {
    display: flex !important;
    flex-wrap: wrap !important;
    justify-content: center !important;
    align-items: center !important;
    gap: 14px !important;
    margin-top: 20px !important;
}

.channel .step-navigation .btn-nav {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
    height: 34px !important;
    min-height: 34px !important;
    padding: 0 14px !important;
    border: 1px solid rgba(37, 99, 235, 0.35) !important;
    border-radius: 8px !important;
    color: #2563eb !important;
    background: #ffffff !important;
    font-size: var(--student-fs-body) !important;
    font-weight: 600 !important;
    transition:
        transform 0.16s ease,
        border-color 0.16s ease,
        background 0.16s ease,
        box-shadow 0.16s ease !important;
}

.channel .step-navigation .btn-nav:hover:not(:disabled) {
    transform: translateY(-1px) !important;
    border-color: #2563eb !important;
    color: #2563eb !important;
    background: #eff6ff !important;
    box-shadow: 0 3px 10px rgba(37, 99, 235, 0.12) !important;
}

.channel .step-navigation .btn-nav.btn-primary {
    border-color: #2563eb !important;
    color: #ffffff !important;
    background: #2563eb !important;
    box-shadow: 0 3px 10px rgba(37, 99, 235, 0.28) !important;
}

.channel .step-navigation .btn-nav.btn-primary:hover:not(:disabled) {
    border-color: #1d4ed8 !important;
    background: #1d4ed8 !important;
    box-shadow: 0 5px 14px rgba(29, 78, 216, 0.32) !important;
}

.channel .step-navigation .btn-nav.btn-save {
    border: 1px solid #e5e7eb !important;
    background: #ffffff !important;
    color: #6b7280 !important;
}

/* ============================================================
 * 顶部任务工具栏（el-button）
 * ============================================================ */
.channel .task-toolbar-button.el-button {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 6px !important;
    min-height: 34px !important;
    height: 34px !important;
    padding: 0 12px !important;
    border: 1px solid rgba(37, 99, 235, 0.35) !important;
    border-radius: 8px !important;
    color: #2563eb !important;
    background: #ffffff !important;
    font-size: var(--student-fs-body) !important;
    font-weight: 600 !important;
    transition:
        border-color 0.16s ease,
        background 0.16s ease,
        color 0.16s ease,
        box-shadow 0.16s ease !important;

    &:hover:not(.is-disabled) {
        border-color: #2563eb !important;
        color: #2563eb !important;
        background: #eff6ff !important;
        transform: translateY(-1px) !important;
        box-shadow: 0 2px 6px rgba(37, 99, 235, 0.12) !important;
    }
}

.channel .task-toolbar-button--submit {
    border-color: #2563eb !important;
    background: #2563eb !important;
    color: #ffffff !important;
    box-shadow:
        0 1px 2px rgba(37, 99, 235, 0.35),
        0 3px 10px rgba(37, 99, 235, 0.22) !important;

    &:hover:not(.is-disabled) {
        background: #1d4ed8 !important;
        box-shadow:
            0 2px 4px rgba(37, 99, 235, 0.4),
            0 5px 14px rgba(29, 78, 216, 0.28) !important;
    }
}

/* ============================================================
 * 窄屏：横向滑动
 * ============================================================ */
@media (max-width: 900px) {
    #app .studentLayout .app-main:has(.channel) .step-indicator {
        justify-content: flex-start !important;
        overflow-x: auto !important;
    }

    #app .studentLayout .app-main:has(.channel) .step-indicator .step-tab {
        flex: 0 0 140px !important;
        max-width: none !important;
    }
}
</style>