diff --git a/src/api/studentTrainingAnswer.js b/src/api/studentTrainingAnswer.js
index 00a5308..4be51d4 100644
--- a/src/api/studentTrainingAnswer.js
+++ b/src/api/studentTrainingAnswer.js
@@ -136,6 +136,15 @@ export function checkMarketOpportunitySelectionStepThree(payload) {
   return request({ url: "/api/student-training-answers/market-opportunity-selection/step-3/validate", method: "post", data: { scores }, headers: { repeatSubmit: false } });
 }
 
+export function checkMarketOpportunitySelectionStepFour(payload) {
+  const visualizationUrl = String(payload?.visualizationUrl || "").trim();
+  if (isStudentDemo()) {
+    if (!visualizationUrl) return Promise.reject(new Error("请上传数据可视化结果图"));
+    return Promise.resolve({ code: 200, data: { valid: true, message: "校验通过" } });
+  }
+  return request({ url: "/api/student-training-answers/market-opportunity-selection/step-4/validate", method: "post", data: { visualizationUrl }, headers: { repeatSubmit: false } });
+}
+
 function validateNewProductSurveyStepTwoDemo(form) {
   const value = form || {};
   const images = Array.isArray(value.images) ? value.images : [];
diff --git a/src/views/product/market-opportunity-selection.vue b/src/views/product/market-opportunity-selection.vue
index 4dc7982..fb80dcb 100644
--- a/src/views/product/market-opportunity-selection.vue
+++ b/src/views/product/market-opportunity-selection.vue
@@ -29,6 +29,19 @@
             <div class="calculation-guide"><div><h3>推荐工具及方法如下，自行选择：</h3><p>1. Excel/WPS 表格，自行操作计算，可参考《实训操作说明》完成。</p><p>2. 下载 Excel 模板，填写关键数据，完成指标计算。</p><p>3. 导出实训数据表，上传到通用 AI 大模型，参考提示词完成计算。</p><p>请根据数据表及各指标权重设定表，通过 Min-Max 归一法计算各二级指标得分，采用加权评分法计算综合得分。</p></div><div class="download-stack"><button class="btn" type="button" @click="downloadInstructions">下载实训操作说明</button><button class="btn primary" type="button" @click="downloadTemplate">下载自动化模板</button></div></div>
             <div class="step-actions"><button class="btn primary" type="button" :disabled="saving || !stepTwoPassed" @click="saveAndGoToStepFour">保存并进入第 4 步</button><button class="btn" type="button" :disabled="saving || !stepTwoPassed" @click="resetStepThree"><el-icon><RefreshLeft /></el-icon> 清空填写</button></div>
           </template>
+          <template v-else-if="currentStep === 4">
+            <div class="step-heading"><div><p>Step 04</p><h2>{{ trainingSteps[3] }}</h2></div><em>可视化结果提交</em></div>
+            <p class="intro">计算完各产品综合得分后，请按照智能健身镜、智能卫浴镜和智能美妆镜，计算各品类产品的平均得分、最高分、最低分，并进行可视化处理。</p>
+            <p v-if="!stepThreePassed" class="warning">请先完成并保存第 3 步的产品综合得分，再上传可视化结果图。</p>
+            <div class="visualization-upload">
+              <input ref="visualizationInput" class="visually-hidden" type="file" accept="image/png,image/jpeg,image/webp" @change="handleVisualizationUpload" />
+              <button class="upload-trigger" type="button" :disabled="saving || uploading || !stepThreePassed" @click="openVisualizationPicker"><el-icon><UploadFilled /></el-icon>{{ uploading ? "上传中..." : visualization.url ? "更换数据可视化结果图" : "上传数据可视化结果图" }}</button>
+              <p>支持 PNG、JPG、WEBP 格式，文件不超过 5MB。</p>
+              <div v-if="visualization.url" class="visualization-preview"><el-image :src="visualization.url" :preview-src-list="[visualization.url]" fit="cover" preview-teleported /><div><strong>{{ visualization.name || "数据可视化结果图" }}</strong><span>点击缩略图可放大查看</span><button class="text-button" type="button" @click="clearVisualization">移除图片</button></div></div>
+            </div>
+            <div class="visual-guide"><h3>推荐工具及方法如下，自行选择：</h3><p>1. 使用 Excel/WPS 表格计算三类产品的平均得分、最高分和最低分，并生成图表。</p><p>2. 下载 Excel 模板，填写关键数据，完成指标计算和可视化。</p><p>3. 导出实训数据表，上传到通用 AI 大模型，参考提示词生成可视化结果。</p></div>
+            <div class="step-actions"><button class="btn primary" type="button" :disabled="saving || uploading || !stepThreePassed" @click="saveAndCompleteTraining">保存并完成实训</button></div>
+          </template>
           <div v-else class="placeholder"><p>第 {{ currentStep }} 步内容待配置</p><span>已保存的步骤可从上方步骤栏返回查看。</span></div>
         </section>
       </section>
@@ -38,9 +51,10 @@
 </template>
 
 <script setup>
-import { Download, RefreshLeft } from "@element-plus/icons-vue";
-import { checkMarketOpportunitySelectionStepOne, checkMarketOpportunitySelectionStepTwo, checkMarketOpportunitySelectionStepThree, getStudentTrainingAnswer, saveStudentTrainingAnswer } from "@/api/studentTrainingAnswer";
+import { Download, RefreshLeft, UploadFilled } from "@element-plus/icons-vue";
+import { checkMarketOpportunitySelectionStepOne, checkMarketOpportunitySelectionStepTwo, checkMarketOpportunitySelectionStepThree, checkMarketOpportunitySelectionStepFour, getStudentTrainingAnswer, saveStudentTrainingAnswer, uploadStudentTrainingFile } from "@/api/studentTrainingAnswer";
 import { getTrainingTaskByKey } from "@/api/trainingTask";
+import { isStudentDemo } from "@/utils/studentDemo";
 import TrainingAiSidebar from "@/views/components/TrainingAiSidebar.vue";
 import TrainingMaterialButton from "@/views/components/TrainingMaterialButton.vue";
 import TrainingTaskBrief from "@/views/components/TrainingTaskBrief.vue";
@@ -55,7 +69,7 @@ const indicators = [
 const products = [{ id: "smart-fitness-mirror", name: "智能健身镜" }, { id: "smart-bathroom-mirror", name: "智能卫浴镜" }, { id: "smart-beauty-mirror", name: "智能美妆镜" }];
 const defaultTask = { title: "市场机会识别与选品", background: "基于实训数据中的市场、供给与流量指标，完成市场机会识别和选品判断。", goals: ["理解选品数据指标的业务含义", "掌握市场规模、潜力、竞争和运营难度的分类方法", "为后续选品分析建立指标基础"], requirement: "阅读案例资料，完成 8 项指标的分类，并依据判题反馈修改。" };
 const { proxy } = getCurrentInstance();
-const taskConfig = ref(null); const currentStep = ref(1); const saving = ref(false); const stepOnePassed = ref(false); const stepTwoPassed = ref(false); const stepThreePassed = ref(false); const answers = ref(createAnswers()); const weights = ref(createWeights()); const scores = ref(createScores());
+const taskConfig = ref(null); const currentStep = ref(1); const saving = ref(false); const uploading = ref(false); const visualizationInput = ref(null); const visualization = ref({ url: "", name: "" }); const stepOnePassed = ref(false); const stepTwoPassed = ref(false); const stepThreePassed = ref(false); const answers = ref(createAnswers()); const weights = ref(createWeights()); const scores = ref(createScores());
 const taskTitle = computed(() => taskConfig.value?.taskName || defaultTask.title); const taskBackground = computed(() => taskConfig.value?.background || defaultTask.background); const taskGoals = computed(() => parseArray(taskConfig.value?.objectives, defaultTask.goals)); const taskRequirement = computed(() => taskConfig.value?.requirements || defaultTask.requirement); const trainingSteps = computed(() => parseArray(taskConfig.value?.steps, DEFAULT_STEPS));
 const progressItems = computed(() => indicators.map((item) => ({ text: `${answers.value[item.id] ? "已分类" : "待分类"}：${item.name}`, status: answers.value[item.id] ? "done" : "" })));
 const totalWeight = computed(() => indicators.reduce((total, item) => total + (Number(weights.value[item.id]) || 0), 0));
@@ -65,10 +79,11 @@ function createWeights() { return Object.fromEntries(indicators.map((item) => [i
 function createScores() { return Object.fromEntries(products.map((product) => [product.id, null])); }
 function parseArray(value, fallback) { if (Array.isArray(value)) return value.length ? value : fallback; if (!value) return fallback; try { const parsed = JSON.parse(value); return Array.isArray(parsed) && parsed.length ? parsed.map((item) => String(item?.name ?? item).trim()).filter(Boolean) : fallback; } catch (error) { const list = String(value).split(/[；;|]/).map((item) => item.trim()).filter(Boolean); return list.length ? list : fallback; } }
 async function loadTaskConfig() { try { taskConfig.value = (await getTrainingTaskByKey(TASK_KEY))?.data || null; } catch (error) { taskConfig.value = null; } }
-async function loadSavedAnswer() { try { const answer = (await getStudentTrainingAnswer(TASK_KEY))?.data; if (answer?.step1Answer) { const parsed = JSON.parse(answer.step1Answer); answers.value = { ...createAnswers(), ...(parsed?.answers || parsed || {}) }; stepOnePassed.value = true; } if (answer?.step2Answer) { const parsed = JSON.parse(answer.step2Answer); weights.value = { ...createWeights(), ...(parsed?.weights || parsed || {}) }; stepTwoPassed.value = true; } if (answer?.step3Answer) { const parsed = JSON.parse(answer.step3Answer); scores.value = { ...createScores(), ...(parsed?.scores || parsed || {}) }; stepThreePassed.value = true; } if (Number(answer?.currentStep) > 0) currentStep.value = Number(answer.currentStep); } catch (error) { /* Keep the page available when history cannot be restored. */ } }
+async function loadSavedAnswer() { try { const answer = (await getStudentTrainingAnswer(TASK_KEY))?.data; if (answer?.step1Answer) { const parsed = JSON.parse(answer.step1Answer); answers.value = { ...createAnswers(), ...(parsed?.answers || parsed || {}) }; stepOnePassed.value = true; } if (answer?.step2Answer) { const parsed = JSON.parse(answer.step2Answer); weights.value = { ...createWeights(), ...(parsed?.weights || parsed || {}) }; stepTwoPassed.value = true; } if (answer?.step3Answer) { const parsed = JSON.parse(answer.step3Answer); scores.value = { ...createScores(), ...(parsed?.scores || parsed || {}) }; stepThreePassed.value = true; } if (answer?.step4Answer) { const parsed = JSON.parse(answer.step4Answer); visualization.value = { url: parsed?.visualization?.url || "", name: parsed?.visualization?.name || "" }; } if (Number(answer?.currentStep) > 0) currentStep.value = Number(answer.currentStep); } catch (error) { /* Keep the page available when history cannot be restored. */ } }
 function buildStepOneOutcome() { return { title: taskTitle.value, answers: { ...answers.value } }; }
 function buildStepTwoOutcome() { return { title: taskTitle.value, weights: { ...weights.value }, primaryWeights: Object.fromEntries(["市场规模", "市场潜力", "竞争强度", "运营难度"].map((group) => [group, groupWeight(group)])) }; }
 function buildStepThreeOutcome() { return { title: taskTitle.value, scores: { ...scores.value } }; }
+function buildStepFourOutcome() { return { title: taskTitle.value, visualization: { ...visualization.value } }; }
 async function checkAndContinue() { if (saving.value) return; saving.value = true; try { const result = await checkMarketOpportunitySelectionStepOne(indicators.map((item) => ({ id: item.id, category: answers.value[item.id] }))); if (!result?.data?.allCorrect) throw new Error(`当前答对 ${result?.data?.correctCount || 0}/${indicators.length} 项，请根据提示修改`); await saveStudentTrainingAnswer(TASK_KEY, { step1Answer: JSON.stringify(buildStepOneOutcome()), currentStep: 2, submitted: false, saveAction: "SAVE" }); stepOnePassed.value = true; currentStep.value = 2; proxy?.$modal?.msgSuccess("分类正确，已进入第 2 步"); } catch (error) { proxy?.$modal?.msgError?.(error?.message || "请完成指标分类并根据提示修改"); } finally { saving.value = false; } }
 function groupWeight(group) { return indicators.filter((item) => item.group === group).reduce((total, item) => total + (Number(weights.value[item.id]) || 0), 0); }
 function switchStep(step) { if (step > 1 && !stepOnePassed.value) { proxy?.$modal?.msgWarning("请先完成第 1 步指标分类"); return; } if (step > 2 && !stepTwoPassed.value) { proxy?.$modal?.msgWarning("请先完成第 2 步指标权重设定"); return; } if (step > 3 && !stepThreePassed.value) { proxy?.$modal?.msgWarning("请先完成第 3 步综合得分计算"); return; } currentStep.value = step; }
@@ -77,12 +92,17 @@ async function saveAndGoToStepFour() { if (saving.value || !stepTwoPassed.value)
 function resetStepOne() { answers.value = createAnswers(); proxy?.$modal?.msgSuccess("已清空第 1 步填写内容"); }
 function resetStepTwo() { weights.value = createWeights(); proxy?.$modal?.msgSuccess("已清空第 2 步填写内容"); }
 function resetStepThree() { scores.value = createScores(); proxy?.$modal?.msgSuccess("已清空第 3 步填写内容"); }
+function openVisualizationPicker() { visualizationInput.value?.click(); }
+function clearVisualization() { if (visualization.value.url.startsWith("blob:")) URL.revokeObjectURL(visualization.value.url); visualization.value = { url: "", name: "" }; }
+async function handleVisualizationUpload(event) { const file = event.target?.files?.[0]; if (!file) return; const acceptedTypes = ["image/jpeg", "image/png", "image/webp"]; if (!acceptedTypes.includes(file.type)) { proxy?.$modal?.msgError?.("请上传 PNG、JPG 或 WEBP 格式的图片"); event.target.value = ""; return; } if (file.size > 5 * 1024 * 1024) { proxy?.$modal?.msgError?.("图片大小不能超过 5MB"); event.target.value = ""; return; } uploading.value = true; try { if (isStudentDemo()) { clearVisualization(); visualization.value = { url: URL.createObjectURL(file), name: file.name }; } else { const formData = new FormData(); formData.append("file", file); const result = await uploadStudentTrainingFile(formData); const url = result?.url || result?.data?.url; if (!url) throw new Error("图片上传失败，请重试"); visualization.value = { url, name: file.name }; } proxy?.$modal?.msgSuccess("可视化结果图上传成功"); } catch (error) { proxy?.$modal?.msgError?.(error?.message || "图片上传失败，请重试"); } finally { uploading.value = false; event.target.value = ""; } }
+async function saveAndCompleteTraining() { if (saving.value || !stepThreePassed.value) return; saving.value = true; try { await checkMarketOpportunitySelectionStepFour({ visualizationUrl: visualization.value.url }); await saveStudentTrainingAnswer(TASK_KEY, { step4Answer: JSON.stringify(buildStepFourOutcome()), currentStep: 4, submitted: true, saveAction: "SUBMIT" }); proxy?.$modal?.msgSuccess("实训成果已保存，恭喜完成本次实训"); } catch (error) { proxy?.$modal?.msgError?.(error?.message || "请上传数据可视化结果图"); } finally { saving.value = false; } }
 function downloadFile(content, fileName, type) { const blob = new Blob([content], { type }); const url = URL.createObjectURL(blob); const link = document.createElement("a"); link.href = url; link.download = fileName; link.click(); URL.revokeObjectURL(url); }
 function downloadInstructions() { downloadFile("市场机会识别与选品 - 实训操作说明\n\n1. 汇总三类产品的原始数据。\n2. 对正向指标计算 (x-min)/(max-min)，对逆向指标计算 (max-x)/(max-min)。\n3. 将归一化得分乘以第 2 步二级指标权重后求和。\n4. 将综合得分填写回第 3 步表格，保留两位小数。", "市场机会识别与选品-实训操作说明.txt", "text/plain;charset=utf-8"); }
 function downloadTemplate() { const header = ["产品品类", ...indicators.map((item) => item.name), "综合得分"]; const rows = products.map((product) => [product.name, ...indicators.map(() => ""), ""]); const weightRow = ["二级指标权重(%)", ...indicators.map((item) => weights.value[item.id] ?? ""), ""]; downloadFile([header, weightRow, ...rows].map((row) => row.join(",")).join("\n"), "市场机会识别与选品-自动化模板.csv", "text/csv;charset=utf-8"); }
-function exportOutcome() { const blob = new Blob([JSON.stringify({ taskName: taskTitle.value, step1: buildStepOneOutcome(), step2: buildStepTwoOutcome(), step3: buildStepThreeOutcome(), currentStep: currentStep.value }, null, 2)], { type: "application/json;charset=utf-8" }); const url = URL.createObjectURL(blob); const link = document.createElement("a"); link.href = url; link.download = `${taskTitle.value}-实训结果.json`; link.click(); URL.revokeObjectURL(url); }
+function exportOutcome() { const blob = new Blob([JSON.stringify({ taskName: taskTitle.value, step1: buildStepOneOutcome(), step2: buildStepTwoOutcome(), step3: buildStepThreeOutcome(), step4: buildStepFourOutcome(), currentStep: currentStep.value }, null, 2)], { type: "application/json;charset=utf-8" }); const url = URL.createObjectURL(blob); const link = document.createElement("a"); link.href = url; link.download = `${taskTitle.value}-实训结果.json`; link.click(); URL.revokeObjectURL(url); }
 </script>
 
 <style lang="scss" scoped>
 .opportunity-page { display:grid; grid-template-columns:minmax(720px,1fr) 340px; gap:24px; min-height:calc(100vh - 106px); padding:24px; color:#e9f8ff; background:#06111d; }.opportunity-core { min-width:0; border:1px solid rgba(0,180,255,.25); background:rgba(8,18,28,.64); box-shadow:0 22px 48px rgba(0,0,0,.22); }.task-header { padding:24px 28px 4px; }.task-header span,.step-heading p { color:#66dcff; font-size:13px; font-weight:800; letter-spacing:.08em; }.task-header h1 { margin:9px 0 0; color:#fff; font-size:29px; }.workbench { margin:24px; padding:22px; border:1px solid rgba(33,194,255,.35); border-radius:20px; background:rgba(1,24,39,.72); }.workbench-actions { display:flex; justify-content:flex-end; gap:12px; }.btn { display:inline-flex; align-items:center; justify-content:center; gap:6px; border:1px solid #2cc9ff; border-radius:999px; padding:10px 18px; color:#dff8ff; background:rgba(8,87,121,.55); cursor:pointer; }.primary { border-color:#36d9ff; background:linear-gradient(110deg,#0eaae4,#0572ac); font-weight:700; }.btn:disabled { cursor:not-allowed; opacity:.6; }.step-indicator { display:flex; align-items:center; gap:12px; margin:28px 0; padding:12px; border:1px solid rgba(30,190,255,.28); border-radius:22px; }.step-tab { display:flex; align-items:center; flex:1; gap:10px; min-width:0; padding:10px; border:0; border-radius:16px; color:#96c6d8; background:transparent; text-align:left; cursor:pointer; }.step-tab.active { color:#fff; background:linear-gradient(110deg,#148fc6,#0879aa); }.step-tab b { display:grid; place-items:center; flex:0 0 42px; width:42px; height:42px; border:1px solid #4ed7ff; border-radius:50%; }.step-tab span { display:grid; gap:4px; min-width:0; }.step-tab strong { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }.step-tab small { color:#5ec9ed; }.step-indicator i { flex:0 0 24px; height:2px; background:rgba(83,204,255,.4); }.step-card { padding:24px; border:1px solid rgba(31,185,249,.32); border-radius:18px; background:rgba(1,21,34,.65); }.step-heading { display:flex; justify-content:space-between; align-items:start; }.step-heading p { margin:0; }.step-heading h2 { margin:5px 0 0; color:#fff; font-size:24px; }.step-heading em { border:1px solid #38caff; border-radius:999px; padding:7px 12px; color:#9aeaff; font-style:normal; }.intro { margin:24px 0; color:#c5e4ef; font-size:16px; line-height:1.8; }.warning { margin:0 0 16px; color:#ffd58e; }.weight-summary { display:flex; align-items:baseline; gap:10px; margin:10px 0 18px; padding:13px 16px; border:1px solid rgba(57,207,255,.28); border-radius:11px; color:#c5e4ef; background:rgba(11,81,113,.18); }.weight-summary strong { color:#ffcf77; font-size:23px; }.weight-summary strong.valid { color:#67e8a9; }.weight-summary small { margin-left:auto; color:#8fc9dc; }.table-wrap,.score-table-wrap { overflow-x:auto; }.table-wrap table,.score-table { width:100%; min-width:720px; border-collapse:collapse; }.table-wrap th,.table-wrap td,.score-table th,.score-table td { border:1px solid rgba(139,213,241,.45); }.table-wrap th,.score-table th { padding:14px; color:#fff; background:#079ed9; font-size:16px; }.table-wrap th:first-child,.table-wrap td:first-child { width:22%; text-align:center; }.table-wrap th:nth-child(2),.metric { width:34%; text-align:center; font-weight:700; }.table-wrap td { padding:10px 18px; }.table-wrap select,.weight-table input,.score-table input { display:block; width:min(600px,100%); margin:auto; border:1px solid rgba(115,220,255,.58); border-radius:6px; padding:9px 12px; color:#e9faff; background:#09293c; font:inherit; }.weight-table .first-level { color:#67dcff; font-weight:800; }.weight-table td:last-child,.score-table td:last-child { position:relative; text-align:center; }.weight-table input,.score-table input { display:inline-block; width:150px; margin:0; text-align:center; }.weight-table .percent,.score-table .percent { margin-left:8px; color:#78d9f7; }.score-table th:first-child,.score-table td:first-child { width:16%; text-align:center; }.score-table th:nth-child(2) { width:45%; }.score-table td { padding:12px 18px; }.calculation-guide { display:grid; grid-template-columns:minmax(0,1fr) 210px; gap:22px; margin-top:26px; padding:19px 21px; border:1px solid rgba(64,206,255,.27); border-radius:14px; color:#c9e9f4; background:rgba(9,67,94,.18); line-height:1.75; }.calculation-guide h3 { margin:0 0 8px; color:#fff; font-size:16px; }.calculation-guide p { margin:6px 0; }.download-stack { display:grid; align-content:center; gap:12px; }.download-stack .btn { border-radius:8px; }.step-actions { display:flex; justify-content:center; gap:12px; margin-top:26px; }.placeholder { padding:94px 20px; color:#a8cfdd; text-align:center; }.placeholder p { color:#fff; font-size:20px; } @media (max-width:1280px) { .opportunity-page { grid-template-columns:1fr; }.step-indicator { overflow-x:auto; }.step-tab { min-width:180px; } } @media (max-width:720px) { .opportunity-page { padding:12px; }.workbench { margin:12px; padding:14px; }.task-header { padding:18px; }.workbench-actions { justify-content:flex-start; flex-wrap:wrap; }.step-heading em { display:none; }.weight-summary { flex-wrap:wrap; }.weight-summary small { width:100%; margin-left:0; }.calculation-guide { grid-template-columns:1fr; } }
+.visualization-upload { display:grid; justify-items:center; gap:12px; min-height:280px; padding:48px 24px; border:1px dashed rgba(77,214,255,.68); border-radius:16px; background:radial-gradient(circle at 50% 25%,rgba(16,143,193,.23),rgba(5,31,48,.3) 58%,rgba(1,21,34,.5)); text-align:center; }.upload-trigger { display:inline-flex; align-items:center; gap:8px; border:1px solid #41d8ff; border-radius:8px; padding:15px 23px; color:#fff; background:linear-gradient(110deg,#0faee6,#0874af); font:inherit; font-weight:800; cursor:pointer; }.upload-trigger:disabled { cursor:not-allowed; opacity:.6; }.visualization-upload > p { margin:0; color:#8dc9dd; }.visually-hidden { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; }.visualization-preview { display:flex; align-items:center; width:min(620px,100%); gap:16px; padding:12px; border:1px solid rgba(91,218,255,.4); border-radius:12px; text-align:left; background:rgba(2,17,29,.55); }.visualization-preview .el-image { flex:0 0 164px; height:104px; border-radius:8px; cursor:zoom-in; overflow:hidden; }.visualization-preview div { display:grid; gap:8px; }.visualization-preview strong { color:#fff; }.visualization-preview span { color:#9bcbdc; font-size:13px; }.text-button { justify-self:start; border:0; padding:0; color:#ffb4a5; background:transparent; cursor:pointer; font:inherit; }.visual-guide { margin-top:24px; padding:18px 22px; border-left:3px solid #31d1ff; color:#c9e9f4; background:rgba(8,78,108,.18); line-height:1.75; }.visual-guide h3 { margin:0 0 7px; color:#fff; font-size:16px; }.visual-guide p { margin:5px 0; }
 </style>