feat: 初始化 bigdata 题库与 quiz-app 刷题系统

.gitignore

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+# Dependencies
+node_modules/
+**/node_modules/
+
+# Production build
+dist/
+**/dist/
+build/
+**/build/
+
+# Archives & Temp
+*.zip
+*.tar.gz
+*.tar
+*.log
+
+# Python cache
+__pycache__/
+*.py[cod]
+*$py.class
+.venv/
+venv/
+env/
+
+# IDE & OS
+.DS_Store
+Thumbs.db
+.vscode/
+.idea/

extract.py

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+import json
+import re
+import fitz
+
+def extract_questions_from_pdf(pdf_path, output_json_path):
+    doc = fitz.open(pdf_path)
+    text_content = ""
+    for page in doc:
+        text_content += page.get_text("text")
+
+    lines = [line.strip() for line in text_content.split('\n') if line.strip()]
+
+    questions = []
+    
+    current_q = None
+    
+    option_pattern = re.compile(r'^[A-H][\.、]\s*(.*)$')
+    answer_pattern = re.compile(r'^[A-H]+$')
+    
+    ignore_keywords = {
+        "序", "号", "序号", "题目", "可选项", "题型", "答案", "来源文件", 
+        "文件内", "文件内具体", "具体出处", "出处", "难度等级", "（1-5 分）", "（1-5分）", "文件内具体出处"
+    }
+
+    # 因为页码可能干扰，我们要确保 current_id 是递增的
+    expected_id = 1
+    state = "WAIT_FOR_ID"
+
+    i = 0
+    while i < len(lines):
+        line = lines[i]
+        
+        if line in ignore_keywords:
+            i += 1
+            continue
+        
+        if state == "WAIT_FOR_ID":
+            if line == str(expected_id):
+                current_q = {"id": expected_id, "title": "", "options": [], "type": "", "answer": ""}
+                state = "READING_TITLE"
+                
+        elif state == "READING_TITLE":
+            if option_pattern.match(line) or line.startswith('A.') or line.startswith('A、'):
+                state = "READING_OPTIONS"
+                current_q["options"].append(line)
+            elif line.isdigit():
+                # 忽略多余的数字（如页码、难度等级、重复的题号）
+                pass
+            else:
+                if current_q["title"]:
+                    current_q["title"] += " " + line
+                else:
+                    current_q["title"] = line
+                    
+        elif state == "READING_OPTIONS":
+            if line in ['单选', '多选']:
+                current_q["type"] = line
+                state = "WAIT_FOR_ANSWER"
+            elif option_pattern.match(line) or line.startswith('B.') or line.startswith('C.') or line.startswith('D.') or line.startswith('E.') or line.startswith('F.'):
+                current_q["options"].append(line)
+            elif line.isdigit():
+                pass
+            else:
+                if len(current_q["options"]) > 0:
+                    current_q["options"][-1] += " " + line
+                
+        elif state == "WAIT_FOR_ANSWER":
+            if answer_pattern.match(line) or line in ['A', 'B', 'C', 'D', 'AB', 'ABC', 'ABCD', 'ABD', 'ACD', 'BCD', 'AC', 'AD', 'BC', 'BD', 'CD']:
+                current_q["answer"] = line
+                questions.append(current_q)
+                expected_id += 1
+                state = "IGNORE_REST"
+                
+        elif state == "IGNORE_REST":
+            if line == str(expected_id):
+                current_q = {"id": expected_id, "title": "", "options": [], "type": "", "answer": ""}
+                state = "READING_TITLE"
+
+        i += 1
+
+    print(f"Extracted {len(questions)} questions.")
+    
+    with open(output_json_path, 'w', encoding='utf-8') as f:
+        json.dump(questions, f, ensure_ascii=False, indent=2)
+
+if __name__ == "__main__":
+    extract_questions_from_pdf("d:/code/bigdata/题库.pdf", "d:/code/bigdata/questions.json")

extract_table.py

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+import json
+import pdfplumber
+import re
+
+def extract_from_pdf(pdf_path, output_json_path):
+    questions = []
+    current_q = None
+    global_id = 1
+    
+    with pdfplumber.open(pdf_path) as pdf:
+        for page_num, page in enumerate(pdf.pages):
+            tables = page.extract_tables()
+            for table in tables:
+                for row in table:
+                    if not row or len(row) < 5:
+                        continue
+                    
+                    col0 = str(row[0]).strip() if row[0] is not None else ""
+                    if col0 in ["序号", "序\n号", "序", "号", "题目", "可选项"]:
+                        continue
+                        
+                    is_new_q = False
+                    if col0.isdigit():
+                        is_new_q = True
+                        # q_id = int(col0)
+                    
+                    title = row[1] if row[1] else ""
+                    options_raw = row[2] if row[2] else ""
+                    q_type = row[3] if row[3] else ""
+                    q_answer = row[4] if row[4] else ""
+                    source_file = row[5] if len(row) > 5 and row[5] else ""
+                    
+                    # Split options
+                    opts = re.split(r'(?=[A-H][\.、])', options_raw)
+                    parsed_options = [opt.strip().replace('\n', '') for opt in opts if opt.strip()]
+                    
+                    if is_new_q:
+                        if current_q:
+                            current_q["id"] = global_id
+                            questions.append(current_q)
+                            global_id += 1
+                        current_q = {
+                            "title": title.replace('\n', ''),
+                            "options": parsed_options,
+                            "type": q_type.replace('\n', '').strip(),
+                            "answer": q_answer.replace('\n', '').strip(),
+                            "source_id": col0, # keeping original id for reference
+                            "page_number": page_num + 1,
+                            "source_file": source_file.replace('\n', '').strip()
+                        }
+                    elif current_q:
+                        if title:
+                            current_q["title"] += title.replace('\n', '')
+                        if parsed_options:
+                            current_q["options"].extend(parsed_options)
+                        if q_type:
+                            current_q["type"] += q_type.replace('\n', '').strip()
+                        if q_answer:
+                            current_q["answer"] += q_answer.replace('\n', '').strip()
+                        if source_file:
+                            current_q["source_file"] += source_file.replace('\n', '').strip()
+
+    if current_q:
+        current_q["id"] = global_id
+        questions.append(current_q)
+        
+    print(f"Extracted {len(questions)} questions via table parsing.")
+    
+    bad = [x for x in questions if len(x['options']) < 2]
+    print(f"Questions with <2 options: {len(bad)}")
+    
+    with open(output_json_path, 'w', encoding='utf-8') as f:
+        json.dump(questions, f, ensure_ascii=False, indent=2)
+
+if __name__ == "__main__":
+    extract_from_pdf("d:/code/bigdata/题库.pdf", "d:/code/bigdata/questions.json")

quiz-app/.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?

quiz-app/.oxlintrc.json

@@ -0,0 +1,8 @@
+{
+  "$schema": "./node_modules/oxlint/configuration_schema.json",
+  "plugins": ["react", "typescript", "oxc"],
+  "rules": {
+    "react/rules-of-hooks": "error",
+    "react/only-export-components": ["warn", { "allowConstantExport": true }]
+  }
+}

quiz-app/README.md

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+# React + TypeScript + Vite
+
+This template provides a minimal setup to get React working in Vite with HMR and some Oxlint rules.
+
+Currently, two official plugins are available:
+
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Oxc](https://oxc.rs)
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/)
+
+## React Compiler
+
+The React Compiler is not enabled on this template because of its impact on dev & build performances. To add it, see [this documentation](https://react.dev/learn/react-compiler/installation).
+
+## Expanding the Oxlint configuration
+
+If you are developing a production application, we recommend enabling type-aware lint rules by installing `oxlint-tsgolint` and editing `.oxlintrc.json`:
+
+```json
+{
+  "$schema": "./node_modules/oxlint/configuration_schema.json",
+  "plugins": ["react", "typescript", "oxc"],
+  "options": {
+    "typeAware": true
+  },
+  "rules": {
+    "react/rules-of-hooks": "error",
+    "react/only-export-components": ["warn", { "allowConstantExport": true }]
+  }
+}
+```
+
+See the [Oxlint rules documentation](https://oxc.rs/docs/guide/usage/linter/rules) for the full list of rules and categories.

quiz-app/index.html

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+<!doctype html>
+<html lang="zh-CN">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
+    <title>大数据技能竞赛刷题平台</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>

quiz-app/package.json

@@ -0,0 +1,25 @@
+{
+  "name": "quiz-app",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "lint": "oxlint",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^19.2.8",
+    "react-dom": "^19.2.8"
+  },
+  "devDependencies": {
+    "@types/node": "^24.13.3",
+    "@types/react": "^19.2.17",
+    "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^6.0.4",
+    "oxlint": "^1.75.0",
+    "typescript": "~6.0.2",
+    "vite": "^8.2.0"
+  }
+}

quiz-app/public/icons.svg

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+<svg xmlns="http://www.w3.org/2000/svg">
+  <symbol id="bluesky-icon" viewBox="0 0 16 17">
+    <g clip-path="url(#bluesky-clip)"><path fill="#08060d" d="M7.75 7.735c-.693-1.348-2.58-3.86-4.334-5.097-1.68-1.187-2.32-.981-2.74-.79C.188 2.065.1 2.812.1 3.251s.241 3.602.398 4.13c.52 1.744 2.367 2.333 4.07 2.145-2.495.37-4.71 1.278-1.805 4.512 3.196 3.309 4.38-.71 4.987-2.746.608 2.036 1.307 5.91 4.93 2.746 2.72-2.746.747-4.143-1.747-4.512 1.702.189 3.55-.4 4.07-2.145.156-.528.397-3.691.397-4.13s-.088-1.186-.575-1.406c-.42-.19-1.06-.395-2.741.79-1.755 1.24-3.64 3.752-4.334 5.099"/></g>
+    <defs><clipPath id="bluesky-clip"><path fill="#fff" d="M.1.85h15.3v15.3H.1z"/></clipPath></defs>
+  </symbol>
+  <symbol id="discord-icon" viewBox="0 0 20 19">
+    <path fill="#08060d" d="M16.224 3.768a14.5 14.5 0 0 0-3.67-1.153c-.158.286-.343.67-.47.976a13.5 13.5 0 0 0-4.067 0c-.128-.306-.317-.69-.476-.976A14.4 14.4 0 0 0 3.868 3.77C1.546 7.28.916 10.703 1.231 14.077a14.7 14.7 0 0 0 4.5 2.306q.545-.748.965-1.587a9.5 9.5 0 0 1-1.518-.74q.191-.14.372-.293c2.927 1.369 6.107 1.369 8.999 0q.183.152.372.294-.723.437-1.52.74.418.838.963 1.588a14.6 14.6 0 0 0 4.504-2.308c.37-3.911-.63-7.302-2.644-10.309m-9.13 8.234c-.878 0-1.599-.82-1.599-1.82 0-.998.705-1.82 1.6-1.82.894 0 1.614.82 1.599 1.82.001 1-.705 1.82-1.6 1.82m5.91 0c-.878 0-1.599-.82-1.599-1.82 0-.998.705-1.82 1.6-1.82.893 0 1.614.82 1.599 1.82 0 1-.706 1.82-1.6 1.82"/>
+  </symbol>
+  <symbol id="documentation-icon" viewBox="0 0 21 20">
+    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="m15.5 13.333 1.533 1.322c.645.555.967.833.967 1.178s-.322.623-.967 1.179L15.5 18.333m-3.333-5-1.534 1.322c-.644.555-.966.833-.966 1.178s.322.623.966 1.179l1.534 1.321"/>
+    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="M17.167 10.836v-4.32c0-1.41 0-2.117-.224-2.68-.359-.906-1.118-1.621-2.08-1.96-.599-.21-1.349-.21-2.848-.21-2.623 0-3.935 0-4.983.369-1.684.591-3.013 1.842-3.641 3.428C3 6.449 3 7.684 3 10.154v2.122c0 2.558 0 3.838.706 4.726q.306.383.713.671c.76.536 1.79.64 3.581.66"/>
+    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="M3 10a2.78 2.78 0 0 1 2.778-2.778c.555 0 1.209.097 1.748-.047.48-.129.854-.503.982-.982.145-.54.048-1.194.048-1.749a2.78 2.78 0 0 1 2.777-2.777"/>
+  </symbol>
+  <symbol id="github-icon" viewBox="0 0 19 19">
+    <path fill="#08060d" fill-rule="evenodd" d="M9.356 1.85C5.05 1.85 1.57 5.356 1.57 9.694a7.84 7.84 0 0 0 5.324 7.44c.387.079.528-.168.528-.376 0-.182-.013-.805-.013-1.454-2.165.467-2.616-.935-2.616-.935-.349-.91-.864-1.143-.864-1.143-.71-.48.051-.48.051-.48.787.051 1.2.805 1.2.805.695 1.194 1.817.857 2.268.649.064-.507.27-.857.49-1.052-1.728-.182-3.545-.857-3.545-3.87 0-.857.31-1.558.8-2.104-.078-.195-.349-1 .077-2.078 0 0 .657-.208 2.14.805a7.5 7.5 0 0 1 1.946-.26c.657 0 1.328.092 1.946.26 1.483-1.013 2.14-.805 2.14-.805.426 1.078.155 1.883.078 2.078.502.546.799 1.247.799 2.104 0 3.013-1.818 3.675-3.558 3.87.284.247.528.714.528 1.454 0 1.052-.012 1.896-.012 2.156 0 .208.142.455.528.377a7.84 7.84 0 0 0 5.324-7.441c.013-4.338-3.48-7.844-7.773-7.844" clip-rule="evenodd"/>
+  </symbol>
+  <symbol id="social-icon" viewBox="0 0 20 20">
+    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="M12.5 6.667a4.167 4.167 0 1 0-8.334 0 4.167 4.167 0 0 0 8.334 0"/>
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+  </symbol>
+  <symbol id="x-icon" viewBox="0 0 19 19">
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+  </symbol>
+</svg>

quiz-app/src/App.css

@@ -0,0 +1,184 @@
+.counter {
+  font-size: 16px;
+  padding: 5px 10px;
+  border-radius: 5px;
+  color: var(--accent);
+  background: var(--accent-bg);
+  border: 2px solid transparent;
+  transition: border-color 0.3s;
+  margin-bottom: 24px;
+
+  &:hover {
+    border-color: var(--accent-border);
+  }
+  &:focus-visible {
+    outline: 2px solid var(--accent);
+    outline-offset: 2px;
+  }
+}
+
+.hero {
+  position: relative;
+
+  .base,
+  .framework,
+  .vite {
+    inset-inline: 0;
+    margin: 0 auto;
+  }
+
+  .base {
+    width: 170px;
+    position: relative;
+    z-index: 0;
+  }
+
+  .framework,
+  .vite {
+    position: absolute;
+  }
+
+  .framework {
+    z-index: 1;
+    top: 34px;
+    height: 28px;
+    transform: perspective(2000px) rotateZ(300deg) rotateX(44deg) rotateY(39deg)
+      scale(1.4);
+  }
+
+  .vite {
+    z-index: 0;
+    top: 107px;
+    height: 26px;
+    width: auto;
+    transform: perspective(2000px) rotateZ(300deg) rotateX(40deg) rotateY(39deg)
+      scale(0.8);
+  }
+}
+
+#center {
+  display: flex;
+  flex-direction: column;
+  gap: 25px;
+  place-content: center;
+  place-items: center;
+  flex-grow: 1;
+
+  @media (max-width: 1024px) {
+    padding: 32px 20px 24px;
+    gap: 18px;
+  }
+}
+
+#next-steps {
+  display: flex;
+  border-top: 1px solid var(--border);
+  text-align: left;
+
+  & > div {
+    flex: 1 1 0;
+    padding: 32px;
+    @media (max-width: 1024px) {
+      padding: 24px 20px;
+    }
+  }
+
+  .icon {
+    margin-bottom: 16px;
+    width: 22px;
+    height: 22px;
+  }
+
+  @media (max-width: 1024px) {
+    flex-direction: column;
+    text-align: center;
+  }
+}
+
+#docs {
+  border-right: 1px solid var(--border);
+
+  @media (max-width: 1024px) {
+    border-right: none;
+    border-bottom: 1px solid var(--border);
+  }
+}
+
+#next-steps ul {
+  list-style: none;
+  padding: 0;
+  display: flex;
+  gap: 8px;
+  margin: 32px 0 0;
+
+  .logo {
+    height: 18px;
+  }
+
+  a {
+    color: var(--text-h);
+    font-size: 16px;
+    border-radius: 6px;
+    background: var(--social-bg);
+    display: flex;
+    padding: 6px 12px;
+    align-items: center;
+    gap: 8px;
+    text-decoration: none;
+    transition: box-shadow 0.3s;
+
+    &:hover {
+      box-shadow: var(--shadow);
+    }
+    .button-icon {
+      height: 18px;
+      width: 18px;
+    }
+  }
+
+  @media (max-width: 1024px) {
+    margin-top: 20px;
+    flex-wrap: wrap;
+    justify-content: center;
+
+    li {
+      flex: 1 1 calc(50% - 8px);
+    }
+
+    a {
+      width: 100%;
+      justify-content: center;
+      box-sizing: border-box;
+    }
+  }
+}
+
+#spacer {
+  height: 88px;
+  border-top: 1px solid var(--border);
+  @media (max-width: 1024px) {
+    height: 48px;
+  }
+}
+
+.ticks {
+  position: relative;
+  width: 100%;
+
+  &::before,
+  &::after {
+    content: '';
+    position: absolute;
+    top: -4.5px;
+    border: 5px solid transparent;
+  }
+
+  &::before {
+    left: 0;
+    border-left-color: var(--border);
+  }
+  &::after {
+    right: 0;
+    border-right-color: var(--border);
+  }
+}

quiz-app/src/App.tsx

@@ -0,0 +1,229 @@
+import { useState, useEffect } from 'react';
+import questionsData from './questions.json';
+import './index.css';
+
+interface Question {
+  id: number;
+  source_id?: string;
+  source_file?: string;
+  page_number?: number;
+  title: string;
+  options: string[];
+  type: string;
+  answer: string;
+}
+
+export default function App() {
+  const [questions] = useState<Question[]>(questionsData);
+  const [currentQuestion, setCurrentQuestion] = useState<Question | null>(null);
+  const [selectedOptions, setSelectedOptions] = useState<string[]>([]);
+  const [isSubmitted, setIsSubmitted] = useState(false);
+  const [weights, setWeights] = useState<Record<number, number>>({});
+  const [history, setHistory] = useState<boolean[]>([]);
+  const [totalAnswered, setTotalAnswered] = useState(0);
+
+  // Load weights from localStorage on init
+  useEffect(() => {
+    const savedWeights = localStorage.getItem('quiz_weights');
+    if (savedWeights) {
+      setWeights(JSON.parse(savedWeights));
+    } else {
+      const initialWeights: Record<number, number> = {};
+      questions.forEach(q => {
+        initialWeights[q.id] = 1;
+      });
+      setWeights(initialWeights);
+    }
+
+    const savedHistory = localStorage.getItem('quiz_history');
+    if (savedHistory) {
+      setHistory(JSON.parse(savedHistory));
+    }
+    const savedTotal = localStorage.getItem('quiz_total');
+    if (savedTotal) {
+      setTotalAnswered(JSON.parse(savedTotal));
+    }
+  }, [questions]);
+
+  // Pick a random question based on weights
+  const pickRandomQuestion = (latestWeights?: Record<number, number>) => {
+    if (questions.length === 0) return;
+    
+    // Calculate total weight
+    let totalWeight = 0;
+    const currentWeights = latestWeights || weights;
+    questions.forEach(q => {
+      totalWeight += (currentWeights[q.id] || 1);
+    });
+
+    let randomNum = Math.random() * totalWeight;
+    let selectedQ = questions[0];
+
+    for (const q of questions) {
+      randomNum -= (currentWeights[q.id] || 1);
+      if (randomNum <= 0) {
+        selectedQ = q;
+        break;
+      }
+    }
+
+    setCurrentQuestion(selectedQ);
+    setSelectedOptions([]);
+    setIsSubmitted(false);
+  };
+
+  // Initial load
+  useEffect(() => {
+    if (Object.keys(weights).length > 0 && !currentQuestion) {
+      pickRandomQuestion();
+    }
+  }, [weights]);
+
+  const handleOptionClick = (optionLabel: string) => {
+    if (isSubmitted) return;
+
+    // extract letter A, B, C...
+    const letter = optionLabel.charAt(0);
+
+    if (currentQuestion?.type === '单选') {
+      setSelectedOptions([letter]);
+      handleSubmit([letter]);
+    } else {
+      // Multi-select
+      setSelectedOptions(prev => 
+        prev.includes(letter) 
+          ? prev.filter(l => l !== letter)
+          : [...prev, letter]
+      );
+    }
+  };
+
+  const handleSubmit = (autoSubmitOptions?: string[]) => {
+    const currentSelection = Array.isArray(autoSubmitOptions) ? autoSubmitOptions : selectedOptions;
+    if (currentSelection.length === 0 || !currentQuestion) return;
+
+    const userAns = [...currentSelection].sort().join('');
+    const isCorrect = userAns === currentQuestion.answer;
+
+    setIsSubmitted(true);
+
+    // Update stats (history of last 100)
+    const newHistory = [...history, isCorrect].slice(-100);
+    setHistory(newHistory);
+    localStorage.setItem('quiz_history', JSON.stringify(newHistory));
+    
+    const newTotal = totalAnswered + 1;
+    setTotalAnswered(newTotal);
+    localStorage.setItem('quiz_total', JSON.stringify(newTotal));
+
+    // Update weights
+    const newWeights = { ...weights };
+    const currentWeight = newWeights[currentQuestion.id] || 1;
+    
+    if (isCorrect) {
+      newWeights[currentQuestion.id] = Math.max(1, currentWeight - 1);
+    } else {
+      newWeights[currentQuestion.id] = currentWeight + 3; // Increase weight heavily on error
+    }
+    
+    setWeights(newWeights);
+    localStorage.setItem('quiz_weights', JSON.stringify(newWeights));
+
+    if (isCorrect) {
+      setTimeout(() => {
+        pickRandomQuestion(newWeights);
+      }, 1000);
+    }
+  };
+
+  if (!currentQuestion) return <div className="glass-card">Loading...</div>;
+
+  const userAns = [...selectedOptions].sort().join('');
+  const isCorrect = isSubmitted && userAns === currentQuestion.answer;
+
+  return (
+    <div className="glass-card">
+      <div className="header">
+        <span className="title-tag">{currentQuestion.type}</span>
+        <span style={{color: '#94a3b8', fontSize: '0.875rem'}}>
+          Weight: {weights[currentQuestion.id] || 1}
+        </span>
+      </div>
+
+      <div className="question-title">
+        {currentQuestion.title}
+      </div>
+
+      <div className="options-container">
+        {currentQuestion.options.map((opt, i) => {
+          const letter = opt.charAt(0);
+          const isSelected = selectedOptions.includes(letter);
+          
+          let className = 'option';
+          if (isSelected) className += ' selected';
+          
+          if (isSubmitted) {
+            className += ' disabled';
+            const isCorrectOption = currentQuestion.answer.includes(letter);
+            if (isCorrectOption) {
+              className += ' correct';
+            } else if (isSelected && !isCorrectOption) {
+              className += ' incorrect';
+            }
+          }
+
+          return (
+            <div 
+              key={i} 
+              className={className}
+              onClick={() => handleOptionClick(opt)}
+            >
+              {opt}
+            </div>
+          );
+        })}
+      </div>
+
+      {!isSubmitted ? (
+        <div className="action-container">
+          {currentQuestion.type !== '单选' && (
+            <button 
+              onClick={() => handleSubmit()}
+              disabled={selectedOptions.length === 0}
+            >
+              提交答案
+            </button>
+          )}
+        </div>
+      ) : (
+        <>
+          <div className={`feedback ${isCorrect ? 'correct' : 'incorrect'}`}>
+            <h3 style={{marginTop: 0, marginBottom: '0.5rem'}}>
+              {isCorrect ? '✅ 回答正确！' : '❌ 回答错误'}
+            </h3>
+            <p style={{margin: 0}}>
+              正确答案是：<strong>{currentQuestion.answer}</strong>
+            </p>
+            {!isCorrect && (
+              <div style={{marginTop: '0.5rem', fontSize: '0.9rem', color: '#64748b'}}>
+                <div>本题出处：题库第 {currentQuestion.source_id || currentQuestion.id} 题</div>
+                <div>来源文件：{currentQuestion.source_file || '未知'}</div>
+                <div>PDF页码：第 {currentQuestion.page_number || '?'} 页</div>
+              </div>
+            )}
+          </div>
+          <div className="action-container">
+            <button onClick={() => pickRandomQuestion()}>
+              {isCorrect ? '下一题 (1s后自动跳转)...' : '下一题'}
+            </button>
+          </div>
+        </>
+      )}
+
+      <div className="stats">
+        <span>已刷题：{totalAnswered} 道</span>
+        <span>近100题正确率：{history.length > 0 ? Math.round((history.filter(Boolean).length / history.length) * 100) : 0}%</span>
+      </div>
+    </div>
+  );
+}

quiz-app/src/assets/react.svg

@@ -0,0 +1 @@
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quiz-app/src/index.css

@@ -0,0 +1,212 @@
+:root {
+  font-family: 'Inter', system-ui, Avenir, Helvetica, Arial, sans-serif;
+  line-height: 1.5;
+  font-weight: 400;
+
+  color-scheme: light dark;
+  --bg-color: #0f172a;
+  --text-color: #f8fafc;
+  --card-bg: rgba(30, 41, 59, 0.7);
+  --card-border: rgba(255, 255, 255, 0.1);
+  --primary-color: #3b82f6;
+  --primary-hover: #2563eb;
+  --success-color: #10b981;
+  --error-color: #ef4444;
+  --option-bg: rgba(255, 255, 255, 0.05);
+  --option-hover: rgba(255, 255, 255, 0.1);
+  --option-selected: rgba(59, 130, 246, 0.2);
+  --option-border: rgba(255, 255, 255, 0.1);
+}
+
+body {
+  margin: 0;
+  display: flex;
+  place-items: center;
+  min-width: 320px;
+  min-height: 100vh;
+  background-color: var(--bg-color);
+  color: var(--text-color);
+  background-image: 
+    radial-gradient(at 0% 0%, hsla(253,16%,7%,1) 0, transparent 50%), 
+    radial-gradient(at 50% 0%, hsla(225,39%,30%,1) 0, transparent 50%), 
+    radial-gradient(at 100% 0%, hsla(339,49%,30%,1) 0, transparent 50%);
+  background-attachment: fixed;
+  background-size: cover;
+}
+
+#root {
+  max-width: 800px;
+  margin: 0 auto;
+  padding: 2rem;
+  width: 100%;
+  box-sizing: border-box;
+}
+
+.glass-card {
+  background: var(--card-bg);
+  backdrop-filter: blur(16px);
+  -webkit-backdrop-filter: blur(16px);
+  border: 1px solid var(--card-border);
+  border-radius: 24px;
+  padding: 2.5rem;
+  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
+  animation: slideUp 0.5s ease-out forwards;
+}
+
+@keyframes slideUp {
+  from {
+    opacity: 0;
+    transform: translateY(20px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}
+
+.header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 2rem;
+  border-bottom: 1px solid var(--card-border);
+  padding-bottom: 1rem;
+}
+
+.title-tag {
+  background: var(--primary-color);
+  color: white;
+  padding: 0.25rem 0.75rem;
+  border-radius: 9999px;
+  font-size: 0.875rem;
+  font-weight: 600;
+  letter-spacing: 0.05em;
+}
+
+.question-title {
+  font-size: 1.5rem;
+  font-weight: 600;
+  margin-bottom: 2rem;
+  line-height: 1.6;
+}
+
+.options-container {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+}
+
+.option {
+  display: flex;
+  align-items: center;
+  padding: 1rem 1.5rem;
+  border-radius: 12px;
+  background: var(--option-bg);
+  border: 1px solid var(--option-border);
+  cursor: pointer;
+  transition: all 0.2s ease;
+  font-size: 1.1rem;
+}
+
+.option:hover:not(.disabled) {
+  background: var(--option-hover);
+  transform: translateY(-2px);
+}
+
+.option.selected {
+  background: var(--option-selected);
+  border-color: var(--primary-color);
+}
+
+.option.correct {
+  background: rgba(16, 185, 129, 0.2);
+  border-color: var(--success-color);
+}
+
+.option.incorrect {
+  background: rgba(239, 68, 68, 0.2);
+  border-color: var(--error-color);
+}
+
+.option.disabled {
+  cursor: default;
+  opacity: 0.8;
+}
+
+.action-container {
+  margin-top: 2.5rem;
+  display: flex;
+  justify-content: flex-end;
+}
+
+button {
+  background: var(--primary-color);
+  color: white;
+  border: none;
+  padding: 0.875rem 2rem;
+  border-radius: 12px;
+  font-size: 1.1rem;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all 0.2s ease;
+  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
+}
+
+button:hover:not(:disabled) {
+  background: var(--primary-hover);
+  transform: translateY(-2px);
+  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
+}
+
+button:disabled {
+  opacity: 0.5;
+  cursor: not-allowed;
+}
+
+.feedback {
+  margin-top: 2rem;
+  padding: 1.5rem;
+  border-radius: 12px;
+  animation: fadeIn 0.3s ease-out;
+}
+
+.feedback.correct {
+  background: rgba(16, 185, 129, 0.1);
+  border-left: 4px solid var(--success-color);
+}
+
+.feedback.incorrect {
+  background: rgba(239, 68, 68, 0.1);
+  border-left: 4px solid var(--error-color);
+}
+
+@keyframes fadeIn {
+  from { opacity: 0; }
+  to { opacity: 1; }
+}
+
+.stats {
+  display: flex;
+  justify-content: space-between;
+  font-size: 0.875rem;
+  color: #94a3b8;
+  margin-top: 1.5rem;
+  padding-top: 1.5rem;
+  border-top: 1px solid var(--card-border);
+}
+
+@media (max-width: 600px) {
+  #root {
+    padding: 1rem;
+  }
+  .glass-card {
+    padding: 1.5rem;
+  }
+  .question-title {
+    font-size: 1.25rem;
+  }
+  .option {
+    padding: 0.875rem 1rem;
+    font-size: 1rem;
+  }
+}

quiz-app/src/main.tsx

@@ -0,0 +1,10 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App.tsx'
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+)

quiz-app/tsconfig.app.json

@@ -0,0 +1,26 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+    "target": "es2023",
+    "lib": ["ES2023", "DOM"],
+    "module": "esnext",
+    "types": ["vite/client"],
+    "allowArbitraryExtensions": true,
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "jsx": "react-jsx",
+
+    /* Linting */
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true
+  },
+  "include": ["src"]
+}

quiz-app/tsconfig.json

@@ -0,0 +1,7 @@
+{
+  "files": [],
+  "references": [
+    { "path": "./tsconfig.app.json" },
+    { "path": "./tsconfig.node.json" }
+  ]
+}

quiz-app/tsconfig.node.json

@@ -0,0 +1,23 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
+    "target": "es2023",
+    "lib": ["ES2023"],
+    "types": ["node"],
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "module": "nodenext",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+
+    /* Linting */
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true
+  },
+  "include": ["vite.config.ts"]
+}

quiz-app/vite.config.ts

@@ -0,0 +1,7 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [react()],
+})