dianshang-qianduan/src/views/product/structure.vue

<template>
    <div class="architecture-page student-training-shell">
        <main class="architecture-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="checkAndSaveStepFour"
                    :on-export="exportOutcome" />
            </section>

            <section class="architecture-workbench">
                <nav class="step-indicator" aria-label="产品架构设计步骤">
                    <template v-for="(step, index) in trainingSteps" :key="`${step}-${index}`">
                        <button type="button"
                            :class="['step-tab', { active: currentStep === index + 1, complete: currentStep > index + 1 }]"
                            @click="switchStep(index + 1)">
                            <span class="step-marker">{{ String(index + 1).padStart(2, '0') }}</span>
                            <span class="step-copy"><strong class="step-name">{{ step }}</strong></span>
                        </button>
                        <span v-if="index < trainingSteps.length - 1" class="step-connector" aria-hidden="true"></span>
                    </template>
                </nav>

                <section v-if="currentStep === 1" class="architecture-step-card">
                    <div class="step-title-row">
                        <div>
                            <p class="section-eyebrow">Step 01</p>
                            <h3>{{ trainingSteps[0] }}</h3>
                        </div><span class="step-chip">拖拽排序判题</span>
                    </div>
                    <p class="step-desc">智能硬件产品通常采用模块化分层架构，从物理硬件到用户功能分为 4
                        层。请将卡片拖拽为<strong>从顶层到底层</strong>的正确顺序（顶层在上、底层在下）；排序正确后才能进入下一步。</p>

                    <div class="architecture-workspace">
                        <div class="order-rail" aria-hidden="true"><span>顶层</span><i></i><span>底层</span></div>
                        <div class="layer-list" role="list" aria-label="产品架构层级排序">
                            <article v-for="(layer, index) in layerOrder" :key="layer.id" class="layer-card"
                                :class="{ dragging: dragLayerId === layer.id }" draggable="true" role="listitem"
                                @dragstart="onDragStart(layer.id)" @dragend="dragLayerId = ''" @dragover.prevent
                                @drop="onDrop(layer.id)">
                                <span class="layer-position">{{ index + 1 }}</span>
                                <span class="drag-handle" title="拖拽排序">⋮⋮</span>
                                <div class="layer-copy">
                                    <h4>{{ layer.name }}</h4>
                                    <p>{{ layer.description }}</p>
                                </div>
                                <div class="move-actions">
                                    <button type="button" :disabled="index === 0 || checking" title="上移"
                                        @click="moveLayer(index, -1)">↑</button>
                                    <button type="button" :disabled="index === layerOrder.length - 1 || checking"
                                        title="下移" @click="moveLayer(index, 1)">↓</button>
                                </div>
                            </article>
                        </div>
                    </div>

                    <p v-if="checkResult" class="result-message" :class="{ success: checkResult.allCorrect }">{{
                        checkResult.message ||
                        (checkResult.allCorrect ? '排序正确，已解锁下一步。' : `当前仅
                        ${checkResult.correctPositionCount}/${checkResult.totalCount}
                        个位置正确，请继续调整。`) }}</p>
                    <div class="task-actions">
                        <button type="button" class="btn-nav" :disabled="checking" @click="shuffleLayers"><el-icon>
                                <RefreshLeft />
                            </el-icon>重新打乱</button>
                    </div>
                </section>

                <section v-else-if="currentStep === 2" class="architecture-step-card">
                    <div class="step-title-row">
                        <div>
                            <p class="section-eyebrow">Step 02</p>
                            <h3>{{ trainingSteps[1] }}</h3>
                        </div><span class="step-chip">操作链路排序</span>
                    </div>
                    <p class="step-desc">产品运行时，用户操作产生的信号会经过硬件感知、驱动传递、算法处理和应用功能触发，最终再由硬件产生效果。请将以下动作按一次完整运行链路的正确顺序排列。</p>

                    <div class="flow-workspace">
                        <div class="flow-caption"><span>操作发起</span><i></i><span>效果反馈</span></div>
                        <div class="flow-list" role="list" aria-label="产品运行操作链路排序">
                            <article v-for="(action, index) in flowOrder" :key="action.id" class="flow-card"
                                :class="{ dragging: dragFlowId === action.id }" draggable="true" role="listitem"
                                @dragstart="onFlowDragStart(action.id)" @dragend="dragFlowId = ''" @dragover.prevent
                                @drop="onFlowDrop(action.id)">
                                <span class="layer-position">{{ index + 1 }}</span>
                                <span class="drag-handle" title="拖拽排序">⋮⋮</span>
                                <div class="layer-copy">
                                    <h4>{{ action.name }}</h4>
                                    <p>{{ action.description }}</p>
                                </div>
                                <div class="move-actions">
                                    <button type="button" :disabled="index === 0 || checking" title="上移"
                                        @click="moveFlow(index, -1)">↑</button>
                                    <button type="button" :disabled="index === flowOrder.length - 1 || checking"
                                        title="下移" @click="moveFlow(index, 1)">↓</button>
                                </div>
                            </article>
                        </div>
                    </div>

                    <p v-if="stepTwoCheckResult" class="result-message"
                        :class="{ success: stepTwoCheckResult.allCorrect }">{{
                            stepTwoCheckResult.message || (stepTwoCheckResult.allCorrect ? '排序正确，已解锁下一步。' : `当前仅
                        ${stepTwoCheckResult.correctPositionCount}/${stepTwoCheckResult.totalCount} 个位置正确，请继续调整。`) }}
                    </p>
                    <div class="task-actions">
                        <button type="button" class="btn-nav" :disabled="checking" @click="shuffleFlow"><el-icon>
                                <RefreshLeft />
                            </el-icon>重新打乱</button>
                    </div>
                </section>

                <section v-else-if="currentStep === 3" class="architecture-step-card">
                    <div class="step-title-row">
                        <div>
                            <p class="section-eyebrow">Step 03</p>
                            <h3>{{ trainingSteps[2] }}</h3>
                        </div><span class="step-chip">场景链路分析</span>
                    </div>
                    <p class="step-desc">根据本实训案例资料，至少选择 3 个典型的工作场景，分析产品架构各层级在场景中的具体工作。每一行需完整填写，系统会将这些内容作为后续架构方案设计的依据。
                    </p>

                    <div class="scene-toolbar">
                        <span>已完成 {{ completedScenarioCount }} 个场景 <em>（至少 3 个，空白行不参与校验）</em></span>
                        <div class="scene-toolbar__actions">
                            <button type="button" class="btn-nav" :disabled="scenarioRows.length >= 10 || checking"
                                @click="addScenarioRow">增加一行</button>
                            <button type="button" class="btn-nav" :disabled="scenarioRows.length <= 3 || checking"
                                @click="removeScenarioRow">删除一行</button>
                            <button type="button" class="btn-nav" @click="exportOutcome"><el-icon>
                                    <Download />
                                </el-icon>导出</button>
                        </div>
                    </div>

                    <div class="scenario-table-wrap">
                        <table class="scenario-table">
                            <thead>
                                <tr>
                                    <th>序号</th>
                                    <th>用户场景</th>
                                    <th>硬件物理层<br><small>（感知什么）</small></th>
                                    <th>驱动感知层<br><small>（传递什么）</small></th>
                                    <th>算法处理层<br><small>（处理什么）</small></th>
                                    <th>应用功能层<br><small>（触发什么）</small></th>
                                    <th>驱动感知层<br><small>（输出什么）</small></th>
                                    <th>硬件物理层<br><small>（产生什么效果）</small></th>
                                </tr>
                            </thead>
                            <tbody>
                                <tr v-for="(row, index) in scenarioRows" :key="row.id">
                                    <td class="scenario-index">{{ index + 1 }}</td>
                                    <td><el-input v-model="row.userScenario" type="textarea"
                                            :autosize="{ minRows: 3, maxRows: 6 }"
                                            :placeholder="index === 0 ? '例如：用户说「小美，开灯」' : '填写典型用户场景'" /></td>
                                    <td><el-input v-model="row.hardwareSense" type="textarea"
                                            :autosize="{ minRows: 3, maxRows: 6 }"
                                            :placeholder="index === 0 ? '例如：麦克风阵列采集到声音信号' : '硬件感知到什么'" /></td>
                                    <td><el-input v-model="row.driverTransmit" type="textarea"
                                            :autosize="{ minRows: 3, maxRows: 6 }"
                                            :placeholder="index === 0 ? '例如：音频采集驱动将声音转为数字信号' : '驱动层传递什么'" /></td>
                                    <td><el-input v-model="row.algorithmProcess" type="textarea"
                                            :autosize="{ minRows: 3, maxRows: 6 }"
                                            :placeholder="index === 0 ? '例如：唤醒词检测与命令词匹配' : '算法层处理什么'" /></td>
                                    <td><el-input v-model="row.applicationTrigger" type="textarea"
                                            :autosize="{ minRows: 3, maxRows: 6 }"
                                            :placeholder="index === 0 ? '例如：触发语音开关灯功能' : '应用层触发什么'" /></td>
                                    <td><el-input v-model="row.driverOutput" type="textarea"
                                            :autosize="{ minRows: 3, maxRows: 6 }"
                                            :placeholder="index === 0 ? '例如：LED 调光驱动输出 PWM 信号' : '驱动层输出什么'" /></td>
                                    <td><el-input v-model="row.hardwareEffect" type="textarea"
                                            :autosize="{ minRows: 3, maxRows: 6 }"
                                            :placeholder="index === 0 ? '例如：灯珠点亮并输出亮度和色温' : '硬件产生什么效果'" /></td>
                                </tr>
                            </tbody>
                        </table>
                    </div>

                    <p v-if="stepThreeCheckResult" class="result-message"
                        :class="{ success: stepThreeCheckResult.valid }">{{
                            stepThreeCheckResult.message }}</p>
                </section>

                <section v-else-if="currentStep === 4" class="architecture-step-card">
                    <div class="step-title-row">
                        <div>
                            <p class="section-eyebrow">Step 04</p>
                            <h3>{{ trainingSteps[3] }}</h3>
                        </div><span class="step-chip">核心功能架构图</span>
                    </div>
                    <p class="step-desc">根据本实训案例资料，选取3个核心功能，画出这3个功能在四层架构中的逻辑调用关系图。要求画清楚应用功能层、算法处理层、驱动感知层、硬件物理层；每个功能从应用层出发，向下标注所调用的算法模块-驱动模块-硬件单元；用箭头标注信号流向。</p>
                    <section class="architecture-image-grid">
                        <article v-for="(image, index) in architectureImages" :key="image.key"
                            class="architecture-image-card"
                            :class="{ uploading: uploadingArchitectureImage === index }">
                            <div class="architecture-image-card__head"><span>架构图 {{ index + 1 }}</span><small>{{
                                image.url ? '已上传' :
                                    '待上传' }}</small></div>
                            <label class="architecture-image-trigger">
                                <input type="file" accept="image/png,image/jpeg,image/webp,image/gif"
                                    :disabled="uploadingArchitectureImage !== null || checking"
                                    @change="uploadArchitectureImage($event, index)" />
                                <el-icon>
                                    <Upload />
                                </el-icon>
                                <strong>{{ uploadingArchitectureImage === index ? '上传中…' : image.url ? '替换架构图' : `上传架构图
                                    ${index + 1}`
                                }}</strong>
                                <span>PNG、JPG、WEBP 或 GIF</span>
                            </label>
                            <figure v-if="image.url" class="architecture-image-preview">
                                <el-image :src="image.url" :preview-src-list="[image.url]" fit="cover"
                                    preview-teleported />
                                <figcaption><span>{{ image.name || `架构图 ${index + 1}` }}</span><button type="button"
                                        @click="clearArchitectureImage(index)">移除</button></figcaption>
                            </figure>
                        </article>
                    </section>
                    <p v-if="stepFourCheckResult" class="result-message"
                        :class="{ success: stepFourCheckResult.valid }">{{
                            stepFourCheckResult.message }}</p>
                </section>
                <section v-else class="architecture-step-card placeholder-card">
                    <p class="section-eyebrow">Step {{ String(currentStep).padStart(2, '0') }}</p>
                    <h3>{{ trainingSteps[currentStep - 1] }}</h3>
                </section>

                <div class="step-navigation">
                    <div class="step-nav-left">
                        <button v-if="currentStep > 1" type="button" class="btn-nav btn-ghost" :disabled="saving"
                            @click="previousStep">
                            <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
                        </button>
                    </div>
                    <div class="step-nav-right">
                        <span class="step-progress">Step {{ String(currentStep).padStart(2, "0") }} / {{
                            String(trainingSteps.length).padStart(2, "0") }}</span>
                        <button v-if="currentStep < trainingSteps.length" type="button" class="btn-nav btn-primary"
                            :disabled="saving" @click="nextStep">
                            下一步
                            <el-icon>
                                <ArrowRight />
                            </el-icon>
                        </button>
                    </div>
                </div>
            </section>
        </main>

        <TrainingAiSidebar study-tip="先识别物理硬件、驱动感知、算法处理和应用功能各自职责，再从顶层到底层排序（顶层在上）。" reference-title="分层判断提示"
            reference-text="· 硬件物理层：实体元器件与电路基础<br />· 驱动感知层：信号采集、转换与驱动<br />· 算法处理层：数据处理、识别与决策<br />· 应用功能层：用户可直接感知和操作的功能"
            :progress-items="progressItems" />
    </div>
</template>

<script setup>
import { ArrowLeft, ArrowRight, CircleCheck, Download, Operation, RefreshLeft, Upload } from "@element-plus/icons-vue"
import { checkProductArchitectureDesignStepOne, checkProductArchitectureDesignStepTwo, checkProductArchitectureDesignStepThree, checkProductArchitectureDesignStepFour, getStudentTrainingAnswer, saveStudentTrainingAnswer, uploadStudentTrainingFile } from "@/api/studentTrainingAnswer"
import { getTrainingTaskByKey } from "@/api/trainingTask"
import { parseTrainingArray } from "@/views/training/taskKeyMap"
import TrainingAiSidebar from "@/views/components/TrainingAiSidebar.vue"
import TrainingTaskToolbar from "@/views/components/TrainingTaskToolbar.vue"
import { SCENARIO_FIELDS, getCompletedScenarioCount, getRowsForScenarioValidation, getScenarioValidationMessage } from "./productArchitectureScenarioValidation.mjs"

const { proxy } = getCurrentInstance()
const TASK_KEY = "product-structure"
const DEFAULT_STEPS = ["智能硬件分层架构", "产品运行操作链路", "产品场景架构分析", "架构评审与优化"]
const LAYERS = [
    { id: "hardware-physical", name: "硬件物理层", description: "产品的物理基础，包含电源模块、主控芯片、传感器、LED灯珠等实体元器件。" },
    { id: "driver-sensing", name: "驱动感知层", description: "连接硬件与算法的中间层，负责信号采集、转换与输出驱动。" },
    { id: "algorithm-processing", name: "算法处理层", description: "数据处理与决策的核心层，负责语音识别、信号分析、控制策略等算法逻辑。" },
    { id: "application-function", name: "应用功能层", description: "面向用户的功能呈现层，是用户能直接感知和操作的功能集合。" },
]
const FLOW_ACTIONS = [
    { id: "user-action", name: "用户做了一个操作", description: "用户在产品或应用中发起一次操作。" },
    { id: "hardware-senses", name: "硬件感知到信号", description: "传感器或硬件模块捕获用户操作形成的输入信号。" },
    { id: "driver-transmits", name: "驱动层传递信号", description: "驱动与感知层完成信号采集、转换并向上层传递。" },
    { id: "algorithm-processes", name: "算法层处理数据", description: "算法层对输入数据进行识别、分析和决策。" },
    { id: "application-triggers", name: "应用层触发功能", description: "应用功能层依据算法结果触发对应的产品功能。" },
    { id: "driver-outputs", name: "驱动层输出指令", description: "驱动层将功能指令转化为可执行的控制输出。" },
    { id: "hardware-effects", name: "硬件产生效果", description: "硬件执行指令并形成用户可感知的最终效果。" },
]
const fallbackTask = {
    title: "产品架构设计", background: "智能硬件产品采用模块化分层架构。通过本实训理解各层职责和层间关系，为后续功能与技术方案设计建立基础。",
    goals: ["理解智能硬件的四层模块化架构", "区分各层的核心职责", "建立从物理硬件到用户功能的系统化思维"],
    requirement: "将四层架构按「从顶层到底层」排序（顶层在上）；判题通过后方可进入下一步。",
}

const taskConfig = ref(null)
const briefOpen = ref(true)
const currentStep = ref(1)
const layerOrder = ref(shuffle(duplicateLayers()))
const dragLayerId = ref("")
const checking = ref(false)
const stepOnePassed = ref(false)
const checkResult = ref(null)
const flowOrder = ref(shuffle(duplicateFlowActions()))
const dragFlowId = ref("")
const stepTwoPassed = ref(false)
const stepTwoCheckResult = ref(null)
const scenarioRows = ref(createScenarioRows(3))
const stepThreePassed = ref(false)
const stepThreeCheckResult = ref(null)
const architectureImages = ref(createArchitectureImages())
const uploadingArchitectureImage = ref(null)
const stepFourPassed = ref(false)
const stepFourCheckResult = ref(null)
const taskTitle = computed(() => taskConfig.value?.taskName || fallbackTask.title)
const taskBackground = computed(() => taskConfig.value?.background || fallbackTask.background)
const taskGoals = computed(() => parseTrainingArray(taskConfig.value?.objectives, fallbackTask.goals))
const taskRequirement = computed(() => taskConfig.value?.requirements || fallbackTask.requirement)
const trainingSteps = computed(() => parseTrainingArray(taskConfig.value?.steps, DEFAULT_STEPS))
const progressItems = computed(() => trainingSteps.value.map((text, index) => ({ text, status: index + 1 < currentStep.value ? "done" : index + 1 === currentStep.value ? "doing" : "" })))
const completedScenarioCount = computed(() => getCompletedScenarioCount(scenarioRows.value))
const saving = computed(() => checking.value || uploadingArchitectureImage.value !== null)

onMounted(async () => { await loadTaskConfig(); await loadSavedProgress() })

function duplicateLayers() { return LAYERS.map((item) => ({ ...item })) }
function duplicateFlowActions() { return FLOW_ACTIONS.map((item) => ({ ...item })) }
function createScenarioRow() { return { id: `scenario-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`, userScenario: "", hardwareSense: "", driverTransmit: "", algorithmProcess: "", applicationTrigger: "", driverOutput: "", hardwareEffect: "" } }
function createScenarioRows(total) { return Array.from({ length: total }, () => createScenarioRow()) }
function createArchitectureImages() { return [1, 2, 3].map((index) => ({ key: `architecture-${index}`, url: "", name: "" })) }
function shuffle(items) {
    const result = [...items]
    for (let index = result.length - 1; index > 0; index -= 1) { const target = Math.floor(Math.random() * (index + 1));[result[index], result[target]] = [result[target], result[index]] }
    return result
}
function normalizeOrder(ids) {
    if (!Array.isArray(ids) || ids.length !== LAYERS.length || new Set(ids).size !== LAYERS.length) return null
    const found = Object.fromEntries(LAYERS.map((item) => [item.id, item]))
    return ids.every((id) => found[id]) ? ids.map((id) => ({ ...found[id] })) : null
}
function normalizeFlowOrder(ids) {
    if (!Array.isArray(ids) || ids.length !== FLOW_ACTIONS.length || new Set(ids).size !== FLOW_ACTIONS.length) return null
    const found = Object.fromEntries(FLOW_ACTIONS.map((item) => [item.id, item]))
    return ids.every((id) => found[id]) ? ids.map((id) => ({ ...found[id] })) : null
}
async function loadTaskConfig() { try { taskConfig.value = (await getTrainingTaskByKey(TASK_KEY))?.data || null } catch (_) { taskConfig.value = null } }
async function loadSavedProgress() {
    try {
        const answer = (await getStudentTrainingAnswer(TASK_KEY))?.data
        const saved = parseSavedAnswer(answer?.step1Answer)
        const stepTwoSaved = parseSavedAnswer(answer?.step2Answer)
        const stepThreeSaved = parseSavedAnswer(answer?.step3Answer)
        const stepFourSaved = parseSavedAnswer(answer?.step4Answer)
        const order = normalizeOrder(saved?.layerIds)
        if (order) layerOrder.value = order
        stepOnePassed.value = Boolean(saved?.passed)
        checkResult.value = saved?.checkResult || null
        const flow = normalizeFlowOrder(stepTwoSaved?.actionIds)
        if (flow) flowOrder.value = flow
        stepTwoPassed.value = Boolean(stepTwoSaved?.passed)
        stepTwoCheckResult.value = stepTwoSaved?.checkResult || null
        const scenarios = normalizeScenarioRows(stepThreeSaved?.rows)
        if (scenarios) scenarioRows.value = scenarios
        stepThreePassed.value = Boolean(stepThreeSaved?.passed)
        stepThreeCheckResult.value = stepThreeSaved?.checkResult || null
        const images = normalizeArchitectureImages(stepFourSaved?.images)
        if (images) architectureImages.value = images
        stepFourPassed.value = Boolean(stepFourSaved?.passed)
        stepFourCheckResult.value = stepFourSaved?.checkResult || null
        const savedStep = Number(answer?.currentStep || saved?.currentStep)
        if (savedStep > 1) currentStep.value = Math.min(savedStep, trainingSteps.value.length)
    } catch (_) { /* Keep the randomized local state when no saved answer exists. */ }
}
function parseSavedAnswer(raw) { if (!raw) return null; try { return typeof raw === "string" ? JSON.parse(raw) : raw } catch (_) { return null } }
function normalizeScenarioRows(rows) {
    if (!Array.isArray(rows) || rows.length < 3 || rows.length > 10) return null
    return rows.map((row) => ({ id: row?.id || createScenarioRow().id, ...SCENARIO_FIELDS.reduce((result, field) => ({ ...result, [field]: String(row?.[field] || "") }), {}) }))
}
function normalizeArchitectureImages(images) {
    if (!Array.isArray(images) || images.length !== 3) return null
    return images.map((image, index) => ({ key: `architecture-${index + 1}`, url: String(image?.url || ""), name: String(image?.name || "") }))
}
function buildStepOneAnswer() { return { layerIds: layerOrder.value.map((item) => item.id), passed: stepOnePassed.value, checkResult: checkResult.value, updatedAt: new Date().toISOString() } }
function buildStepTwoAnswer() { return { actionIds: flowOrder.value.map((item) => item.id), passed: stepTwoPassed.value, checkResult: stepTwoCheckResult.value, updatedAt: new Date().toISOString() } }
function buildStepThreeAnswer() { return { rows: scenarioRows.value.map((row) => ({ ...row })), passed: stepThreePassed.value, checkResult: stepThreeCheckResult.value, updatedAt: new Date().toISOString() } }
function buildStepFourAnswer() { return { images: architectureImages.value.map((image) => ({ ...image })), passed: stepFourPassed.value, checkResult: stepFourCheckResult.value, updatedAt: new Date().toISOString() } }
function buildAnswer() { return { currentStep: currentStep.value, step1: buildStepOneAnswer(), step2: buildStepTwoAnswer(), step3: buildStepThreeAnswer(), step4: buildStepFourAnswer() } }
async function persist(saveAction = "SAVE") { await saveStudentTrainingAnswer(TASK_KEY, { saveAction, currentStep: currentStep.value, step1Answer: JSON.stringify(buildStepOneAnswer()), step2Answer: JSON.stringify(buildStepTwoAnswer()), step3Answer: JSON.stringify(buildStepThreeAnswer()), step4Answer: JSON.stringify(buildStepFourAnswer()), submitted: stepFourPassed.value && saveAction === "SUBMIT" }) }
function onDragStart(id) { if (!checking.value) dragLayerId.value = id }
function onDrop(targetId) {
    const fromIndex = layerOrder.value.findIndex((item) => item.id === dragLayerId.value); const toIndex = layerOrder.value.findIndex((item) => item.id === targetId)
    if (fromIndex < 0 || toIndex < 0 || fromIndex === toIndex) return
    const next = [...layerOrder.value]; const [moving] = next.splice(fromIndex, 1); next.splice(toIndex, 0, moving); layerOrder.value = next; checkResult.value = null; stepOnePassed.value = false
}
function moveLayer(index, direction) { const target = index + direction; if (target < 0 || target >= layerOrder.value.length) return; const next = [...layerOrder.value];[next[index], next[target]] = [next[target], next[index]]; layerOrder.value = next; checkResult.value = null; stepOnePassed.value = false }
function shuffleLayers() { layerOrder.value = shuffle(duplicateLayers()); checkResult.value = null; stepOnePassed.value = false }
function onFlowDragStart(id) { if (!checking.value) dragFlowId.value = id }
function onFlowDrop(targetId) {
    const fromIndex = flowOrder.value.findIndex((item) => item.id === dragFlowId.value); const toIndex = flowOrder.value.findIndex((item) => item.id === targetId)
    if (fromIndex < 0 || toIndex < 0 || fromIndex === toIndex) return
    const next = [...flowOrder.value]; const [moving] = next.splice(fromIndex, 1); next.splice(toIndex, 0, moving); flowOrder.value = next; stepTwoCheckResult.value = null; stepTwoPassed.value = false
}
function moveFlow(index, direction) { const target = index + direction; if (target < 0 || target >= flowOrder.value.length) return; const next = [...flowOrder.value];[next[index], next[target]] = [next[target], next[index]]; flowOrder.value = next; stepTwoCheckResult.value = null; stepTwoPassed.value = false }
function shuffleFlow() { flowOrder.value = shuffle(duplicateFlowActions()); stepTwoCheckResult.value = null; stepTwoPassed.value = false }
function addScenarioRow() { if (scenarioRows.value.length >= 10) return; scenarioRows.value.push(createScenarioRow()); stepThreeCheckResult.value = null; stepThreePassed.value = false }
function removeScenarioRow() { if (scenarioRows.value.length <= 3) return; scenarioRows.value.pop(); stepThreeCheckResult.value = null; stepThreePassed.value = false }
async function checkAndSave() {
    if (checking.value) return
    checking.value = true
    try {
        const response = await checkProductArchitectureDesignStepOne(layerOrder.value.map((item) => item.id))
        checkResult.value = response?.data || null; stepOnePassed.value = Boolean(checkResult.value?.allCorrect)
        await persist("SAVE")
        if (stepOnePassed.value) proxy?.$modal?.msgSuccess("排序正确，已保存并解锁下一步"); else proxy?.$modal?.msgWarning("排序尚未正确，请继续调整")
    } catch (error) { proxy?.$modal?.msgError(error?.message || "判题失败，请稍后重试") } finally { checking.value = false }
}
async function checkAndSaveStepTwo() {
    if (checking.value) return
    checking.value = true
    try {
        const response = await checkProductArchitectureDesignStepTwo(flowOrder.value.map((item) => item.id))
        stepTwoCheckResult.value = response?.data || null; stepTwoPassed.value = Boolean(stepTwoCheckResult.value?.allCorrect)
        await persist("SAVE")
        if (stepTwoPassed.value) proxy?.$modal?.msgSuccess("排序正确，已保存并解锁下一步"); else proxy?.$modal?.msgWarning("排序尚未正确，请继续调整")
    } catch (error) { proxy?.$modal?.msgError(error?.message || "判题失败，请稍后重试") } finally { checking.value = false }
}
async function checkAndSaveStepThree() {
    if (checking.value) return
    const validationMessage = getScenarioValidationMessage(scenarioRows.value)
    if (validationMessage) {
        stepThreePassed.value = false
        stepThreeCheckResult.value = { valid: false, message: validationMessage }
        proxy?.$modal?.msgWarning(validationMessage)
        return
    }
    checking.value = true
    try {
        const response = await checkProductArchitectureDesignStepThree(getRowsForScenarioValidation(scenarioRows.value).map((row) => ({ ...row })))
        stepThreeCheckResult.value = response?.data || null; stepThreePassed.value = Boolean(stepThreeCheckResult.value?.valid)
        await persist("SAVE")
        if (stepThreePassed.value) proxy?.$modal?.msgSuccess("场景架构分析已保存并解锁下一步"); else proxy?.$modal?.msgWarning("请至少完整填写 3 个典型工作场景")
    } catch (error) { proxy?.$modal?.msgError(error?.message || "校验失败，请稍后重试") } finally { checking.value = false }
}
async function uploadArchitectureImage(event, index) {
    const file = event.target.files?.[0]
    if (!file) return
    if (!/^image\/(png|jpeg|webp|gif)$/i.test(file.type)) { proxy?.$modal?.msgError?.("请上传 PNG、JPG、JPEG、WEBP 或 GIF 格式的架构图"); event.target.value = ""; return }
    uploadingArchitectureImage.value = index
    try {
        const formData = new FormData(); formData.append("file", file)
        const response = await uploadStudentTrainingFile(formData)
        const url = response?.url || response?.fileName || ""
        if (!url) throw new Error("上传结果缺少文件地址")
        architectureImages.value[index] = { ...architectureImages.value[index], url, name: response?.originalFilename || file.name }
        stepFourPassed.value = false; stepFourCheckResult.value = null
        await persist("SAVE")
        proxy?.$modal?.msgSuccess(`架构图 ${index + 1} 上传成功`)
    } catch (error) { proxy?.$modal?.msgError?.(error?.message || "架构图上传失败") } finally { uploadingArchitectureImage.value = null; event.target.value = "" }
}
function clearArchitectureImage(index) { architectureImages.value[index] = { ...architectureImages.value[index], url: "", name: "" }; stepFourPassed.value = false; stepFourCheckResult.value = null }
async function saveStepFour() { if (uploadingArchitectureImage.value !== null) return; await persist("SAVE"); proxy?.$modal?.msgSuccess("第 4 步进度已保存") }
async function checkAndSaveStepFour() {
    if (checking.value || uploadingArchitectureImage.value !== null) return
    checking.value = true
    try {
        const response = await checkProductArchitectureDesignStepFour(architectureImages.value.map((image) => image.url))
        stepFourCheckResult.value = response?.data || null; stepFourPassed.value = Boolean(stepFourCheckResult.value?.valid)
        await persist(stepFourPassed.value ? "SUBMIT" : "SAVE")
        if (stepFourPassed.value) proxy?.$modal?.msgSuccess("产品架构设计实训已完成"); else proxy?.$modal?.msgWarning("请上传完整的三张核心功能架构图")
    } catch (error) { proxy?.$modal?.msgError(error?.message || "校验失败，请稍后重试") } finally { checking.value = false }
}
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)
}
async function goNextStep() {
    if ((currentStep.value === 1 && !stepOnePassed.value) || (currentStep.value === 2 && !stepTwoPassed.value) || (currentStep.value === 3 && !stepThreePassed.value)) return
    currentStep.value = Math.min(currentStep.value + 1, trainingSteps.value.length); await persist("SAVE")
}
function saveCurrentProgress() {
    if (currentStep.value === 1) return checkAndSave()
    if (currentStep.value === 2) return checkAndSaveStepTwo()
    if (currentStep.value === 3) return checkAndSaveStepThree()
    return saveStepFour()
}
function previousStep() { if (currentStep.value > 1) currentStep.value -= 1 }
async function nextStep() {
    if (currentStep.value >= trainingSteps.value.length) return
    const gates = {
        1: [stepOnePassed, "请先完成第 1 步排序并判题通过"],
        2: [stepTwoPassed, "请先完成第 2 步排序并判题通过"],
        3: [stepThreePassed, "请先完成第 3 步场景架构分析并校验通过"],
    }
    const gate = gates[currentStep.value]
    if (gate && !gate[0].value) { proxy?.$modal?.msgWarning(gate[1]); return }
    await goNextStep()
}
function switchStep(step) {
    if (step > 1 && !stepOnePassed.value) { proxy?.$modal?.msgWarning("请先完成第 1 步排序并判题通过"); return }
    if (step > 2 && !stepTwoPassed.value) { proxy?.$modal?.msgWarning("请先完成第 2 步排序并判题通过"); return }
    if (step > 3 && !stepThreePassed.value) { proxy?.$modal?.msgWarning("请先完成第 3 步场景架构分析并校验通过"); return }
    currentStep.value = step
}
function exportOutcome() { const blob = new Blob([JSON.stringify(buildAnswer(), 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) }
</script>

<style lang="scss" scoped>
/* ===== 页面级令牌（教育蓝极简主题） ===== */
.architecture-page {
    /* 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;
    /* 三层次标识色 */
    --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：教育蓝 */
    --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: #ffffff;
}

.architecture-core {
    display: grid;
    gap: 12px;
    align-content: start;
    min-width: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
}

/* ===== task-header ===== */
.task-header {
    position: relative;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    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);
    line-height: 1.4;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.task-brief {
    margin: 0;
    color: var(--student-text-secondary);
    font-size: var(--student-fs-body-sm);
    line-height: 1.65;
    max-width: 100%;
}

.task-brief-text {
    display: block;
}

.task-brief-toggle {
    margin-left: 6px;
    padding: 0;
    border: 0;
    color: var(--student-accent);
    background: transparent;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;

    &:hover {
        color: var(--student-accent-deep);
        text-decoration: underline;
    }
}

.task-brief-more {
    display: grid;
    gap: 6px;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px dashed #e5e7eb;

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

    ul {
        display: grid;
        gap: 3px;
        margin: 0;
        padding-left: 18px;
        color: var(--student-text-secondary);
        font-size: var(--student-fs-body-sm);
        line-height: 1.6;
    }

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

.architecture-toolbar {
    flex: 0 0 auto;
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    max-width: 100%;
}

.outline-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 36px;
    height: 36px;
    padding: 0 14px;
    border: 1px solid rgba(37, 99, 235, 0.35);
    border-radius: 8px;
    color: var(--student-accent);
    background: #ffffff;
    font-family: inherit;
    font-size: var(--student-fs-button);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.16s ease;

    .el-icon {
        font-size: var(--student-fs-h2);
    }

    &:hover:not(:disabled) {
        border-color: var(--student-accent);
        background: var(--student-accent-soft);
        transform: translateY(-1px);
        box-shadow: 0 2px 6px rgba(37, 99, 235, 0.12);
    }
}

/* ===== workbench ===== */
.architecture-workbench {
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    display: grid;
    gap: 12px;
}

.architecture-step-card {
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    display: grid;
    gap: 12px;
}

.step-title-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 10px;
}

.step-title-row h3 {
    margin: 4px 0 0;
    color: var(--student-text);
    font-size: var(--student-fs-h1);
    font-weight: 700;
    line-height: 1.4;
}

.step-chip {
    flex: 0 0 auto;
    padding: 4px 10px;
    border: 1px solid #bfdbfe;
    border-radius: 999px;
    color: var(--student-accent);
    background: var(--student-accent-soft);
    font-size: var(--student-fs-caption);
    font-weight: 600;
    white-space: nowrap;
}

.section-eyebrow {
    display: inline-flex;
    align-items: center;
    margin: 0;
    padding: 0;
    color: var(--student-accent);
    font-family: var(--student-font-data);
    font-size: var(--student-fs-caption);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.step-desc {
    margin: 0 0 16px;
    color: #4b5563;
    font-size: var(--student-fs-body);
    line-height: 1.7;
}

/* ===== 排序工作区 ===== */
.architecture-workspace {
    display: grid;
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 18px;
    max-width: 950px;
    margin: 0 auto;
}

.order-rail {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--student-text-secondary);
    font-size: var(--student-fs-caption);
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.order-rail i {
    flex: 1;
    width: 2px;
    margin: 9px 0;
    background: var(--student-panel-border);
    position: relative;
}

.order-rail i::before,
.order-rail i::after {
    content: "";
    position: absolute;
    left: -4px;
    border: 5px solid transparent;
}

.order-rail i::before {
    top: -1px;
    border-bottom-color: var(--student-panel-border);
}

.order-rail i::after {
    bottom: -1px;
    border-top-color: var(--student-panel-border);
}

.layer-list {
    display: grid;
    gap: 14px;
}

.layer-card {
    display: grid;
    grid-template-columns: 32px 22px minmax(0, 1fr) auto;
    gap: 14px;
    align-items: center;
    padding: 17px 18px;
    border: 1px solid var(--student-panel-border);
    border-radius: 12px;
    background: #ffffff;
    cursor: grab;
    transition: border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

.layer-card:hover,
.layer-card.dragging {
    border-color: var(--student-accent);
    box-shadow: 0 10px 22px rgba(37, 99, 235, 0.1);
    transform: translateY(-2px);
}

.layer-position {
    display: grid;
    place-items: center;
    width: 30px;
    height: 30px;
    border-radius: 6px;
    background: var(--student-accent-soft);
    color: var(--student-accent);
    font-weight: 700;
}

.drag-handle {
    color: var(--student-text-secondary);
    font-size: 20px;
    letter-spacing: -5px;
    transform: rotate(90deg);
}

.layer-copy h4 {
    margin: 0 0 6px;
    color: var(--student-text);
    font-size: var(--student-fs-h1);
    font-weight: 700;
}

.layer-copy p {
    margin: 0;
    color: var(--student-text-secondary);
    font-size: var(--student-fs-body);
    line-height: 1.65;
}

.move-actions {
    display: grid;
    gap: 6px;
}

.move-actions button {
    width: 32px;
    min-height: 28px;
    padding: 0;
    border: 1px solid var(--student-panel-border);
    border-radius: 7px;
    background: #ffffff;
    color: var(--student-text);
    font: inherit;
    cursor: pointer;
    transition: border-color 0.16s ease, background 0.16s ease;

    &:hover:not(:disabled) {
        border-color: var(--student-accent);
        background: var(--student-accent-soft);
        color: var(--student-accent);
    }
}

button:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

/* ===== flow workspace ===== */
.flow-workspace {
    max-width: 1000px;
    margin: 0 auto;
}

.flow-caption {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0 0 14px;
    color: var(--student-text-secondary);
    font-size: var(--student-fs-caption);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.flow-caption i {
    flex: 1;
    height: 1px;
    background: var(--student-panel-border);
}

.flow-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.flow-card {
    display: grid;
    grid-template-columns: 32px 22px minmax(0, 1fr) auto;
    gap: 14px;
    align-items: center;
    padding: 17px 18px;
    border: 1px solid var(--student-panel-border);
    border-radius: 12px;
    background: #ffffff;
    cursor: grab;
    transition: border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

.flow-card:hover,
.flow-card.dragging {
    border-color: var(--student-accent);
    box-shadow: 0 10px 22px rgba(37, 99, 235, 0.1);
    transform: translateY(-2px);
}

/* ===== scene toolbar ===== */
.scene-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 14px;
    color: var(--student-text);
    font-weight: 700;
    font-size: var(--student-fs-body);
}

.scene-toolbar em {
    color: var(--student-text-secondary);
    font-style: normal;
    font-size: var(--student-fs-body-sm);
    font-weight: 400;
}

.scene-toolbar__actions {
    display: flex;
    gap: 8px;
}

/* ===== 表格 ===== */
.scenario-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--student-panel-border);
    border-radius: 10px;
}

.scenario-table {
    width: 100%;
    min-width: 1400px;
    border-collapse: collapse;
    table-layout: fixed;
}

.scenario-table th,
.scenario-table td {
    border: 1px solid var(--student-panel-border);
}

.scenario-table th {
    padding: 10px 8px;
    color: var(--student-text);
    background: #f9fafb;
    font-size: var(--student-fs-body-sm);
    font-weight: 700;
    text-align: left;
    line-height: 1.45;
}

.scenario-table th small {
    color: var(--student-text-secondary);
    font-size: var(--student-fs-caption);
    font-weight: 600;
}

.scenario-table td {
    padding: 6px 8px;
    vertical-align: top;
}

.scenario-table th:first-child,
.scenario-table td:first-child {
    width: 52px;
}

.scenario-table th:nth-child(2),
.scenario-table td:nth-child(2) {
    width: 170px;
}

.scenario-index {
    color: var(--student-text-secondary);
    font-weight: 700;
    text-align: center;
    font-family: ui-monospace, "SF Mono", Consolas, monospace;
}

.scenario-table :deep(.el-textarea__inner) {
    min-height: 72px !important;
    border: 0;
    border-radius: 0;
    color: var(--student-text);
    background: transparent;
    box-shadow: none !important;
    padding: 6px 8px;
    font-size: var(--student-fs-body);
    line-height: 1.55;
    resize: vertical;
}

.scenario-table :deep(.el-textarea__inner:focus) {
    outline: none;
    box-shadow: inset 0 0 0 2px var(--student-accent) !important;
}

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

.scenario-table tr:last-child td {
    border-bottom: 0;
}

.scenario-table th:last-child,
.scenario-table td:last-child {
    border-right: 0;
}

/* ===== 架构图上传 ===== */
.architecture-image-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.architecture-image-card {
    min-width: 0;
    padding: 16px;
    border: 1px solid var(--student-panel-border);
    border-radius: 12px;
    background: #ffffff;
}

.architecture-image-card__head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-bottom: 13px;
    color: var(--student-text);
    font-weight: 700;
}

.architecture-image-card__head small {
    color: var(--student-text-secondary);
    font-size: var(--student-fs-caption);
    font-weight: 500;
}

.architecture-image-trigger {
    display: grid;
    place-items: center;
    align-content: center;
    gap: 7px;
    min-height: 154px;
    border: 1px dashed var(--student-accent);
    border-radius: 10px;
    color: var(--student-text);
    background: var(--student-accent-soft);
    cursor: pointer;
    text-align: center;
    transition: border-color 0.16s ease, background 0.16s ease;

    &:hover {
        border-color: var(--student-accent-deep);
        background: #ffffff;
    }
}

.architecture-image-trigger input {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    opacity: 0;
}

.architecture-image-trigger .el-icon {
    font-size: 24px;
    color: var(--student-accent);
}

.architecture-image-trigger span {
    color: var(--student-text-secondary);
    font-size: var(--student-fs-body-sm);
}

.architecture-image-preview {
    margin: 13px 0 0;
}

.architecture-image-preview :deep(.el-image) {
    display: block;
    width: 100%;
    height: 170px;
    overflow: hidden;
    border: 1px solid var(--student-panel-border);
    border-radius: 8px;
    background: #fff;
    cursor: zoom-in;
}

.architecture-image-preview figcaption {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: center;
    margin-top: 9px;
    color: var(--student-text-secondary);
    font-size: var(--student-fs-body-sm);
}

.architecture-image-preview figcaption span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.architecture-image-preview button {
    border: 1px solid var(--student-accent);
    border-radius: 6px;
    padding: 4px 12px;
    color: #ffffff;
    background: var(--student-accent);
    font: inherit;
    font-size: var(--student-fs-body-sm);
    font-weight: 600;
    cursor: pointer;
    transition: background 0.16s ease;
}

.architecture-image-preview button {
    border: 1px solid var(--student-panel-border);
    background: #ffffff;
    color: var(--student-text);
}

.architecture-image-preview button:hover {
    border-color: var(--student-danger);
    color: var(--student-danger);
}


/* ===== result ===== */
.result-message {
    margin: 16px 0 0;
    padding: 10px 14px;
    border: 1px solid #f0c78a;
    border-radius: 8px;
    color: #92400e;
    background: rgba(245, 124, 0, 0.08);
    font-size: var(--student-fs-body);
}

.result-message.success {
    border-color: #a7f3d0;
    color: #166534;
    background: rgba(43, 164, 113, 0.1);
}

/* ===== 按钮 ===== */
.outline-action,
.btn-nav {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 36px;
    height: 36px;
    padding: 0 14px;
    border: 1px solid rgba(37, 99, 235, 0.35);
    border-radius: 8px;
    color: var(--student-accent);
    background: #ffffff;
    font-family: inherit;
    font-size: var(--student-fs-button);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.16s ease;

    .el-icon {
        font-size: var(--student-fs-h2);
    }

    &:hover:not(:disabled) {
        border-color: var(--student-accent);
        background: var(--student-accent-soft);
        transform: translateY(-1px);
        box-shadow: 0 2px 6px rgba(37, 99, 235, 0.12);
    }

    &:disabled {
        cursor: not-allowed;
        opacity: 0.45;
        transform: none;
        box-shadow: none;
    }
}

.task-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 18px;
}

/* ===== placeholder ===== */
.placeholder-card {
    min-height: 200px;
    padding: 40px 20px;
    text-align: center;
    border: 1px dashed var(--student-panel-border);
    border-radius: 10px;
    background: var(--student-panel-bg);
}

.placeholder-card h3 {
    margin: 8px 0 0;
    color: var(--student-text);
    font-size: var(--student-fs-h2);
    font-weight: 700;
}

/* ===== 响应式 ===== */
@media (max-width: 1000px) {
    .architecture-image-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 840px) {
    .flow-list {
        grid-template-columns: 1fr;
    }

    .scene-toolbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .scene-toolbar__actions {
        width: 100%;
    }

    .scene-toolbar__actions .btn-nav {
        flex: 1;
    }
}

@media (max-width: 720px) {
    .architecture-page {
        padding: 12px;
    }

    .architecture-workspace {
        grid-template-columns: 1fr;
    }

    .order-rail {
        display: none;
    }

    .layer-card {
        grid-template-columns: 30px 17px minmax(0, 1fr);
    }

    .move-actions {
        grid-column: 3;
        grid-template-columns: repeat(2, 32px);
        justify-content: flex-end;
    }

    .flow-card {
        grid-template-columns: 30px 17px minmax(0, 1fr);
    }

    .flow-card .move-actions {
        grid-column: 3;
        grid-template-columns: repeat(2, 32px);
    }

    .task-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .architecture-toolbar {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .step-navigation {
        flex-direction: column;
        align-items: stretch;
    }

    .step-nav-left,
    .step-nav-right {
        width: 100%;
    }

    .btn-nav {
        width: 100%;
    }
}

.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;
}

/* ===== 底部步骤导航按钮 ===== */
.step-navigation {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: 16px;
    padding: 12px 16px;
    border: 1px solid var(--student-panel-border);
    border-radius: 10px;
    background: #ffffff;
}

.step-nav-left,
.step-nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: nowrap;
}

.step-nav-right {
    margin-left: auto;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 36px;
    height: 36px;
    padding: 0 14px;
    border: 1px solid var(--student-accent);
    border-radius: 8px;
    color: #ffffff;
    background: var(--student-accent);
    font-family: inherit;
    font-size: var(--student-fs-button);
    font-weight: 600;
    box-shadow: 0 1px 2px rgba(37, 99, 235, 0.2), 0 2px 8px rgba(37, 99, 235, 0.15);
    cursor: pointer;
    transition: all 0.16s ease;
    white-space: nowrap;

    .el-icon {
        font-size: 18px;
    }

    &:hover:not(:disabled) {
        border-color: var(--student-accent-deep);
        background: var(--student-accent-deep);
        transform: translateY(-1px);
        box-shadow: 0 2px 6px rgba(29, 78, 216, 0.3), 0 4px 12px rgba(29, 78, 216, 0.22);
    }

    &:active:not(:disabled) {
        transform: translateY(0);
    }
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 36px;
    height: 36px;
    padding: 0 14px;
    border: 1px solid rgba(37, 99, 235, 0.35);
    border-radius: 8px;
    color: var(--student-accent);
    background: #ffffff;
    font-family: inherit;
    font-size: var(--student-fs-button);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.16s ease;
    white-space: nowrap;

    .el-icon {
        font-size: 18px;
    }

    &:hover:not(:disabled) {
        border-color: var(--student-accent);
        background: var(--student-accent-soft);
        transform: translateY(-1px);
        box-shadow: 0 2px 6px rgba(37, 99, 235, 0.12);
    }
}

.btn-save {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 36px;
    height: 36px;
    padding: 0 14px;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    color: #4b5563;
    background: #f9fafb;
    font-family: inherit;
    font-size: var(--student-fs-button);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.16s ease;
    white-space: nowrap;

    .el-icon {
        font-size: 18px;
    }

    &:hover:not(:disabled) {
        border-color: #d1d5db;
        background: #f3f4f6;
    }
}

.btn-primary:disabled,
.btn-ghost:disabled,
.btn-save:disabled,
.btn-nav:disabled {
    cursor: not-allowed;
    opacity: 0.5;
    transform: none;
    box-shadow: none;
}

.step-progress {
    color: var(--student-text-secondary);
    font-family: var(--student-font-data);
    font-size: var(--student-fs-caption);
    font-weight: 700;
    letter-spacing: 0.05em;
    white-space: nowrap;
}
</style>

<style lang="scss">
/* ============================================================
 * 步骤导航：分段连接胶囊（教育蓝主题）
 * ============================================================ */
#app .studentLayout section.app-main:has(.architecture-page) .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-connector {
        display: 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: nowrap !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 {
            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;
        }

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

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

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

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

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

@media (max-width: 900px) {
    #app .studentLayout section.app-main:has(.architecture-page) .step-indicator {
        justify-content: flex-start !important;
        overflow-x: auto !important;
    }

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