引入设计系统，统一 UI 风格，增加拼写/默写结果状态反馈

LearnEnglish/LearnEnglish/Models/Quiz.swift

@@ -8,7 +8,6 @@ enum QuizMode: String, Hashable {
 }
 
 struct QuizSetupRequest: Hashable {
-    let mode: QuizMode
     let words: [Word]
 }
 

LearnEnglish/LearnEnglish/SceneDelegate.swift

@@ -12,10 +12,13 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
     func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
         guard let windowScene = scene as? UIWindowScene else { return }
         let window = UIWindow(windowScene: windowScene)
+        window.tintColor = Theme.Color.accent
         let store = WordStore()
         store.load()
         let root = CategoryListViewController(store: store)
-        window.rootViewController = UINavigationController(rootViewController: root)
+        let navigation = UINavigationController(rootViewController: root)
+        navigation.navigationBar.prefersLargeTitles = true
+        window.rootViewController = navigation
         window.makeKeyAndVisible()
         self.window = window
     }

LearnEnglish/LearnEnglish/Services/SpeechService.swift

@@ -2,16 +2,20 @@ import AVFoundation
 
 final class SpeechService: NSObject {
     static let shared = SpeechService()
+    static let speakingDidChangeNotification = Notification.Name("SpeechServiceSpeakingDidChange")
 
     private let synthesizer = AVSpeechSynthesizer()
     private(set) var speakingText: String?
-    var onSpeakingChanged: (() -> Void)?
 
     override init() {
         super.init()
         synthesizer.delegate = self
     }
 
+    func isSpeaking(_ text: String) -> Bool {
+        speakingText == text
+    }
+
     func speak(_ text: String) {
         if synthesizer.isSpeaking {
             synthesizer.stopSpeaking(at: .immediate)
@@ -20,19 +24,23 @@ final class SpeechService: NSObject {
         utterance.voice = AVSpeechSynthesisVoice(language: "en-US")
         utterance.rate = AVSpeechUtteranceDefaultSpeechRate * 0.9
         speakingText = text
-        onSpeakingChanged?()
+        notifySpeakingChanged()
         synthesizer.speak(utterance)
     }
+
+    private func notifySpeakingChanged() {
+        NotificationCenter.default.post(name: Self.speakingDidChangeNotification, object: self)
+    }
 }
 
 extension SpeechService: AVSpeechSynthesizerDelegate {
     func speechSynthesizer(_ synthesizer: AVSpeechSynthesizer, didFinish utterance: AVSpeechUtterance) {
         speakingText = nil
-        onSpeakingChanged?()
+        notifySpeakingChanged()
     }
 
     func speechSynthesizer(_ synthesizer: AVSpeechSynthesizer, didCancel utterance: AVSpeechUtterance) {
         speakingText = nil
-        onSpeakingChanged?()
+        notifySpeakingChanged()
     }
 }

LearnEnglish/LearnEnglish/Utilities/Haptics.swift

@@ -0,0 +1,15 @@
+import UIKit
+
+enum Haptics {
+    static func selection() {
+        UIImpactFeedbackGenerator(style: .light).impactOccurred()
+    }
+
+    static func correct() {
+        UINotificationFeedbackGenerator().notificationOccurred(.success)
+    }
+
+    static func wrong() {
+        UINotificationFeedbackGenerator().notificationOccurred(.error)
+    }
+}

LearnEnglish/LearnEnglish/Utilities/Theme.swift

@@ -0,0 +1,60 @@
+import UIKit
+
+enum Theme {
+    enum Color {
+        static let accent = UIColor.systemIndigo
+        static let cardBackground = UIColor.secondarySystemBackground
+        static let correct = UIColor.systemGreen
+        static let wrong = UIColor.systemRed
+
+        private static let categoryPalette: [UIColor] = [
+            .systemIndigo, .systemTeal, .systemOrange, .systemPurple, .systemGreen
+        ]
+
+        static func category(at index: Int) -> UIColor {
+            categoryPalette[index % categoryPalette.count]
+        }
+    }
+
+    enum Metrics {
+        static let cardRadius: CGFloat = 16
+        static let controlRadius: CGFloat = 12
+    }
+
+    enum Font {
+        static func wordHero(size: CGFloat = 44) -> UIFont {
+            rounded(size: size, weight: .bold)
+        }
+
+        static func rounded(size: CGFloat, weight: UIFont.Weight) -> UIFont {
+            let base = UIFont.systemFont(ofSize: size, weight: weight)
+            guard let descriptor = base.fontDescriptor.withDesign(.rounded) else { return base }
+            return UIFont(descriptor: descriptor, size: size)
+        }
+    }
+}
+
+extension UIView {
+    func setPressed(_ pressed: Bool, animated: Bool = true) {
+        let update = {
+            self.transform = pressed ? CGAffineTransform(scaleX: 0.97, y: 0.97) : .identity
+        }
+        guard animated else {
+            update()
+            return
+        }
+        UIView.animate(withDuration: 0.35, delay: 0, usingSpringWithDamping: 0.6,
+                       initialSpringVelocity: 0, options: [.allowUserInteraction, .beginFromCurrentState],
+                       animations: update)
+    }
+
+    func animateEntry(distance: CGFloat = 12, duration: TimeInterval = 0.3, delay: TimeInterval = 0) {
+        alpha = 0
+        transform = CGAffineTransform(translationX: 0, y: distance)
+        UIView.animate(withDuration: duration, delay: delay,
+                       options: [.curveEaseOut, .allowUserInteraction, .beginFromCurrentState]) {
+            self.alpha = 1
+            self.transform = .identity
+        }
+    }
+}

LearnEnglish/LearnEnglish/Views/CategoryCardCell.swift

@@ -0,0 +1,83 @@
+import UIKit
+
+final class CategoryCardCell: UITableViewCell {
+    private let cardView = UIView()
+    private let iconTile = UIView()
+    private let iconView = UIImageView()
+    private let nameLabel = UILabel()
+    private let countLabel = UILabel()
+    private let chevronView = UIImageView()
+
+    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
+        super.init(style: style, reuseIdentifier: reuseIdentifier)
+        backgroundColor = .clear
+        contentView.backgroundColor = .clear
+        selectionStyle = .none
+
+        cardView.backgroundColor = Theme.Color.cardBackground
+        cardView.layer.cornerRadius = Theme.Metrics.cardRadius
+        contentView.addSubview(cardView)
+        cardView.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            cardView.topAnchor.constraint(equalTo: contentView.topAnchor, constant: 6),
+            cardView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor, constant: 16),
+            cardView.trailingAnchor.constraint(equalTo: contentView.trailingAnchor, constant: -16),
+            cardView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor, constant: -6)
+        ])
+
+        iconTile.layer.cornerRadius = 12
+        iconView.contentMode = .scaleAspectFit
+        iconTile.addSubview(iconView)
+        iconTile.translatesAutoresizingMaskIntoConstraints = false
+        iconView.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            iconTile.widthAnchor.constraint(equalToConstant: 44),
+            iconTile.heightAnchor.constraint(equalToConstant: 44),
+            iconView.centerXAnchor.constraint(equalTo: iconTile.centerXAnchor),
+            iconView.centerYAnchor.constraint(equalTo: iconTile.centerYAnchor)
+        ])
+
+        nameLabel.font = .preferredFont(forTextStyle: .headline)
+        countLabel.font = .preferredFont(forTextStyle: .subheadline)
+        countLabel.textColor = .secondaryLabel
+
+        let textStack = UIStackView(arrangedSubviews: [nameLabel, countLabel])
+        textStack.axis = .vertical
+        textStack.spacing = 2
+
+        chevronView.image = UIImage(systemName: "chevron.right")
+        chevronView.tintColor = .tertiaryLabel
+        chevronView.contentMode = .scaleAspectFit
+        chevronView.setContentHuggingPriority(.required, for: .horizontal)
+
+        let row = UIStackView(arrangedSubviews: [iconTile, textStack, chevronView])
+        row.axis = .horizontal
+        row.alignment = .center
+        row.spacing = 12
+        cardView.addSubview(row)
+        row.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            row.topAnchor.constraint(equalTo: cardView.topAnchor, constant: 12),
+            row.leadingAnchor.constraint(equalTo: cardView.leadingAnchor, constant: 14),
+            row.trailingAnchor.constraint(equalTo: cardView.trailingAnchor, constant: -14),
+            row.bottomAnchor.constraint(equalTo: cardView.bottomAnchor, constant: -12)
+        ])
+    }
+
+    @available(*, unavailable)
+    required init?(coder: NSCoder) { fatalError() }
+
+    func configure(with category: WordCategory, color: UIColor) {
+        nameLabel.text = category.name
+        countLabel.text = "\(category.words.count) 个单词"
+        iconView.image = UIImage(systemName: category.icon,
+                                 withConfiguration: UIImage.SymbolConfiguration(pointSize: 20, weight: .medium))
+        iconView.tintColor = color
+        iconTile.backgroundColor = color.withAlphaComponent(0.12)
+    }
+
+    override func setHighlighted(_ highlighted: Bool, animated: Bool) {
+        super.setHighlighted(highlighted, animated: animated)
+        cardView.setPressed(highlighted, animated: animated)
+    }
+}

LearnEnglish/LearnEnglish/Views/CategoryListViewController.swift

@@ -13,8 +13,11 @@ final class CategoryListViewController: UITableViewController {
 
     override func viewDidLoad() {
         super.viewDidLoad()
-        title = "单词分类"
+        title = "背单词"
-        tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
+        tableView.register(CategoryCardCell.self, forCellReuseIdentifier: "cell")
+        tableView.separatorStyle = .none
+        tableView.backgroundColor = .systemBackground
+        tableView.contentInset.top = 8
         if let error = store.loadError {
             showError(error)
         }
@@ -35,7 +38,6 @@ final class CategoryListViewController: UITableViewController {
             label.leadingAnchor.constraint(greaterThanOrEqualTo: background.leadingAnchor, constant: 24)
         ])
         tableView.backgroundView = background
-        tableView.separatorStyle = .none
     }
 
     override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
@@ -43,24 +45,15 @@ final class CategoryListViewController: UITableViewController {
     }
 
     override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
-        let category = store.categories[indexPath.row]
+        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! CategoryCardCell
-        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
+        cell.configure(with: store.categories[indexPath.row], color: Theme.Color.category(at: indexPath.row))
-        var content = cell.defaultContentConfiguration()
-        content.text = category.name
-        content.textProperties.font = .preferredFont(forTextStyle: .headline)
-        content.secondaryText = "\(category.words.count) 个单词"
-        content.secondaryTextProperties.color = .secondaryLabel
-        content.image = UIImage(systemName: category.icon)
-        content.imageProperties.tintColor = .tintColor
-        content.imageProperties.preferredSymbolConfiguration = .init(font: .preferredFont(forTextStyle: .title2))
-        cell.contentConfiguration = content
-        cell.accessoryType = .disclosureIndicator
         return cell
     }
 
     override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
-        tableView.deselectRow(at: indexPath, animated: true)
+        Haptics.selection()
         let category = store.categories[indexPath.row]
-        navigationController?.pushViewController(WordListViewController(category: category), animated: true)
+        navigationController?.pushViewController(
+            WordListViewController(category: category, colorIndex: indexPath.row), animated: true)
     }
 }

LearnEnglish/LearnEnglish/Views/DictationInputView.swift

@@ -58,5 +58,13 @@ final class DictationInputView: UIView, UITextFieldDelegate {
 
     func activate() { textField.becomeFirstResponder() }
     func deactivate() { textField.resignFirstResponder() }
-    func reset() { textField.text = "" }
+
+    func reset() {
+        textField.text = ""
+        bottomLine.backgroundColor = .separator
+    }
+
+    func showResultState(correct: Bool) {
+        bottomLine.backgroundColor = correct ? Theme.Color.correct : Theme.Color.wrong
+    }
 }

LearnEnglish/LearnEnglish/Views/QuizResultView.swift

@@ -8,7 +8,16 @@ final class QuizResultView: UIView {
     private let onExit: () -> Void
     private let onSelectWord: (Word) -> Void
 
+    private let ringView = UIView()
+    private let ringTrackLayer = CAShapeLayer()
+    private let ringProgressLayer = CAShapeLayer()
+    private let scoreLabel = UILabel()
+    private var animationsStarted = false
+    private var displayLink: CADisplayLink?
+    private var countStartTime: CFTimeInterval = 0
+
     private var correctCount: Int { total - wrongWords.count }
+    private var accuracy: Double { total > 0 ? Double(correctCount) / Double(total) : 0 }
 
     private var durationText: String {
         let seconds = Int(duration)
@@ -32,6 +41,56 @@ final class QuizResultView: UIView {
     @available(*, unavailable)
     required init?(coder: NSCoder) { fatalError() }
 
+    override func layoutSubviews() {
+        super.layoutSubviews()
+        guard ringView.bounds.width > 0 else { return }
+        ringTrackLayer.path = ringPath()
+        ringProgressLayer.path = ringPath()
+    }
+
+    override func didMoveToWindow() {
+        super.didMoveToWindow()
+        guard window != nil, !animationsStarted else { return }
+        animationsStarted = true
+        DispatchQueue.main.async { [weak self] in
+            self?.startAnimations()
+        }
+    }
+
+    private func ringPath() -> CGPath {
+        let lineWidth = ringTrackLayer.lineWidth
+        let radius = min(ringView.bounds.width, ringView.bounds.height) / 2 - lineWidth / 2
+        let center = CGPoint(x: ringView.bounds.midX, y: ringView.bounds.midY)
+        return UIBezierPath(arcCenter: center, radius: radius,
+                            startAngle: -.pi / 2, endAngle: .pi * 1.5, clockwise: true).cgPath
+    }
+
+    private func startAnimations() {
+        let animation = CABasicAnimation(keyPath: "strokeEnd")
+        animation.fromValue = 0
+        animation.toValue = accuracy
+        animation.duration = 0.8
+        animation.beginTime = CACurrentMediaTime() + 0.15
+        animation.timingFunction = CAMediaTimingFunction(name: .easeInEaseOut)
+        animation.fillMode = .forwards
+        animation.isRemovedOnCompletion = false
+        ringProgressLayer.add(animation, forKey: "progress")
+
+        countStartTime = CACurrentMediaTime() + 0.15
+        let link = CADisplayLink(target: self, selector: #selector(countTick(_:)))
+        link.add(to: .main, forMode: .common)
+        displayLink = link
+    }
+
+    @objc private func countTick(_ link: CADisplayLink) {
+        let progress = max(0, min(1, (CACurrentMediaTime() - countStartTime) / 0.6))
+        scoreLabel.text = "\(Int((Double(correctCount) * progress).rounded()))/\(total)"
+        if progress >= 1 {
+            link.invalidate()
+            displayLink = nil
+        }
+    }
+
     private func buildLayout() {
         let scrollView = UIScrollView()
         addSubview(scrollView)
@@ -49,28 +108,14 @@ final class QuizResultView: UIView {
         scrollView.addSubview(stack)
         stack.translatesAutoresizingMaskIntoConstraints = false
         NSLayoutConstraint.activate([
-            stack.topAnchor.constraint(equalTo: scrollView.contentLayoutGuide.topAnchor, constant: 24),
+            stack.topAnchor.constraint(equalTo: scrollView.contentLayoutGuide.topAnchor, constant: 32),
             stack.leadingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.leadingAnchor, constant: 16),
             stack.trailingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.trailingAnchor, constant: -16),
             stack.bottomAnchor.constraint(equalTo: scrollView.contentLayoutGuide.bottomAnchor, constant: -24),
             stack.widthAnchor.constraint(equalTo: scrollView.frameLayoutGuide.widthAnchor, constant: -32)
         ])
 
-        let scoreLabel = UILabel()
+        stack.addArrangedSubview(makeScoreSection())
-        scoreLabel.text = "\(correctCount) / \(total)"
-        scoreLabel.font = .systemFont(ofSize: 44, weight: .bold)
-        scoreLabel.textAlignment = .center
-
-        let durationLabel = UILabel()
-        durationLabel.text = "用时 \(durationText)"
-        durationLabel.font = .preferredFont(forTextStyle: .subheadline)
-        durationLabel.textColor = .secondaryLabel
-        durationLabel.textAlignment = .center
-
-        let scoreStack = UIStackView(arrangedSubviews: [scoreLabel, durationLabel])
-        scoreStack.axis = .vertical
-        scoreStack.spacing = 8
-        stack.addArrangedSubview(scoreStack)
 
         if !wrongWords.isEmpty {
             stack.addArrangedSubview(makeWrongWordsSection())
@@ -88,19 +133,85 @@ final class QuizResultView: UIView {
         stack.addArrangedSubview(buttonStack)
     }
 
+    private func makeScoreSection() -> UIView {
+        ringTrackLayer.fillColor = UIColor.clear.cgColor
+        ringTrackLayer.strokeColor = UIColor.tertiarySystemFill.cgColor
+        ringTrackLayer.lineWidth = 10
+
+        ringProgressLayer.fillColor = UIColor.clear.cgColor
+        ringProgressLayer.strokeColor = Theme.Color.accent.cgColor
+        ringProgressLayer.lineWidth = 10
+        ringProgressLayer.lineCap = .round
+        ringProgressLayer.strokeEnd = 0
+
+        ringView.layer.addSublayer(ringTrackLayer)
+        ringView.layer.addSublayer(ringProgressLayer)
+        ringView.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            ringView.widthAnchor.constraint(equalToConstant: 132),
+            ringView.heightAnchor.constraint(equalToConstant: 132)
+        ])
+
+        scoreLabel.text = "0/\(total)"
+        scoreLabel.font = Theme.Font.rounded(size: 26, weight: .bold)
+        scoreLabel.textAlignment = .center
+        ringView.addSubview(scoreLabel)
+        scoreLabel.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            scoreLabel.centerXAnchor.constraint(equalTo: ringView.centerXAnchor),
+            scoreLabel.centerYAnchor.constraint(equalTo: ringView.centerYAnchor)
+        ])
+
+        let captionLabel = UILabel()
+        captionLabel.text = "答对 \(correctCount) 题 · 用时 \(durationText)"
+        captionLabel.font = .preferredFont(forTextStyle: .subheadline)
+        captionLabel.textColor = .secondaryLabel
+        captionLabel.textAlignment = .center
+
+        let stack = UIStackView(arrangedSubviews: [ringView, captionLabel])
+        stack.axis = .vertical
+        stack.spacing = 16
+        stack.alignment = .center
+        return stack
+    }
+
     private func makeWrongWordsSection() -> UIView {
         let titleLabel = UILabel()
         titleLabel.text = "错题（\(wrongWords.count)）"
         titleLabel.font = .preferredFont(forTextStyle: .headline)
 
-        let section = UIStackView(arrangedSubviews: [titleLabel])
+        let card = UIView()
+        card.backgroundColor = Theme.Color.cardBackground
+        card.layer.cornerRadius = Theme.Metrics.cardRadius
+
+        let cardStack = UIStackView()
+        cardStack.axis = .vertical
+        card.addSubview(cardStack)
+        cardStack.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            cardStack.topAnchor.constraint(equalTo: card.topAnchor, constant: 4),
+            cardStack.leadingAnchor.constraint(equalTo: card.leadingAnchor, constant: 14),
+            cardStack.trailingAnchor.constraint(equalTo: card.trailingAnchor, constant: -14),
+            cardStack.bottomAnchor.constraint(equalTo: card.bottomAnchor, constant: -4)
+        ])
+
+        for (index, word) in wrongWords.enumerated() {
+            cardStack.addArrangedSubview(makeWrongWordRow(word))
+            if index < wrongWords.count - 1 {
+                cardStack.addArrangedSubview(HairlineView())
+            }
+        }
+
+        let section = UIStackView(arrangedSubviews: [titleLabel, card])
         section.axis = .vertical
         section.spacing = 8
+        return section
+    }
 
-        for word in wrongWords {
+    private func makeWrongWordRow(_ word: Word) -> UIView {
         let button = UIButton(type: .system)
         var config = UIButton.Configuration.plain()
-            config.contentInsets = .init(top: 8, leading: 12, bottom: 8, trailing: 12)
+        config.contentInsets = .init(top: 10, leading: 2, bottom: 10, trailing: 2)
         button.configuration = config
         button.contentHorizontalAlignment = .fill
 
@@ -109,6 +220,7 @@ final class QuizResultView: UIView {
         wordLabel.font = .preferredFont(forTextStyle: .headline)
         let meaningLabel = UILabel()
         meaningLabel.text = word.meaning
+        meaningLabel.font = .preferredFont(forTextStyle: .subheadline)
         meaningLabel.textColor = .secondaryLabel
         let chevron = UIImageView(image: UIImage(systemName: "chevron.right"))
         chevron.tintColor = .tertiaryLabel
@@ -122,21 +234,16 @@ final class QuizResultView: UIView {
         button.addSubview(row)
         row.translatesAutoresizingMaskIntoConstraints = false
         NSLayoutConstraint.activate([
-                row.topAnchor.constraint(equalTo: button.topAnchor, constant: 8),
+            row.topAnchor.constraint(equalTo: button.topAnchor, constant: 10),
-                row.leadingAnchor.constraint(equalTo: button.leadingAnchor, constant: 12),
+            row.leadingAnchor.constraint(equalTo: button.leadingAnchor, constant: 2),
-                row.trailingAnchor.constraint(equalTo: button.trailingAnchor, constant: -12),
+            row.trailingAnchor.constraint(equalTo: button.trailingAnchor, constant: -2),
-                row.bottomAnchor.constraint(equalTo: button.bottomAnchor, constant: -8)
+            row.bottomAnchor.constraint(equalTo: button.bottomAnchor, constant: -10)
         ])
 
         button.addAction(UIAction { [weak self] _ in
             self?.onSelectWord(word)
         }, for: .touchUpInside)
-            section.addArrangedSubview(button)
+        return button
-
-            let divider = HairlineView()
-            section.addArrangedSubview(divider)
-        }
-        return section
     }
 
     private func makeButton(title: String, prominent: Bool, action: @escaping () -> Void) -> UIButton {
@@ -144,6 +251,9 @@ final class QuizResultView: UIView {
         var config = prominent ? UIButton.Configuration.borderedProminent() : UIButton.Configuration.plain()
         config.title = title
         config.contentInsets = .init(top: 12, leading: 16, bottom: 12, trailing: 16)
+        if prominent {
+            config.background.cornerRadius = Theme.Metrics.controlRadius
+        }
         button.configuration = config
         button.addAction(UIAction { _ in action() }, for: .touchUpInside)
         return button

LearnEnglish/LearnEnglish/Views/QuizSetupViewController.swift

@@ -1,11 +1,29 @@
 import UIKit
 
-final class QuizSetupViewController: UITableViewController {
+final class QuizSetupViewController: UIViewController {
+    private struct ModeItem {
+        let mode: QuizMode
+        let detail: String
+        let icon: String
+    }
+
     private let request: QuizSetupRequest
+    private let items: [ModeItem] = [
+        ModeItem(mode: .enToZh, detail: "看英文选中文释义", icon: "character"),
+        ModeItem(mode: .zhToEn, detail: "看中文选英文单词", icon: "character.bubble"),
+        ModeItem(mode: .spelling, detail: "补全单词空缺字母", icon: "keyboard"),
+        ModeItem(mode: .dictation, detail: "根据释义默写全词", icon: "square.and.pencil")
+    ]
+
+    private var selectedIndex: Int?
+    private var cardViews: [UIView] = []
+    private var checkViews: [UIImageView] = []
+    private let countControl = UISegmentedControl()
+    private let startButton = UIButton(type: .system)
 
     init(request: QuizSetupRequest) {
         self.request = request
-        super.init(style: .plain)
+        super.init(nibName: nil, bundle: nil)
     }
 
     @available(*, unavailable)
@@ -13,32 +31,176 @@ final class QuizSetupViewController: UITableViewController {
 
     override func viewDidLoad() {
         super.viewDidLoad()
-        title = request.mode.rawValue
+        title = "开始测验"
-        tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
+        navigationItem.largeTitleDisplayMode = .never
+        view.backgroundColor = .systemBackground
+
+        let contentStack = UIStackView()
+        contentStack.axis = .vertical
+        contentStack.spacing = 12
+
+        contentStack.addArrangedSubview(makeCaption("选择模式"))
+        for (index, item) in items.enumerated() {
+            let card = makeModeCard(item: item, index: index)
+            cardViews.append(card)
+            contentStack.addArrangedSubview(card)
         }
 
-    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { 2 }
+        contentStack.setCustomSpacing(24, after: cardViews.last!)
+        contentStack.addArrangedSubview(makeCaption("题量"))
+        setupCountControl()
+        contentStack.addArrangedSubview(countControl)
 
-    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+        let scrollView = UIScrollView()
-        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
+        scrollView.addSubview(contentStack)
-        var content = cell.defaultContentConfiguration()
+        contentStack.translatesAutoresizingMaskIntoConstraints = false
-        content.textProperties.font = .preferredFont(forTextStyle: .headline)
+        NSLayoutConstraint.activate([
-        content.secondaryTextProperties.color = .secondaryLabel
+            contentStack.topAnchor.constraint(equalTo: scrollView.contentLayoutGuide.topAnchor, constant: 8),
-        if indexPath.row == 0 {
+            contentStack.leadingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.leadingAnchor, constant: 16),
-            content.text = "全部随机测试"
+            contentStack.trailingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.trailingAnchor, constant: -16),
-            content.secondaryText = "\(request.words.count) 题"
+            contentStack.bottomAnchor.constraint(lessThanOrEqualTo: scrollView.contentLayoutGuide.bottomAnchor, constant: -16),
+            contentStack.widthAnchor.constraint(equalTo: scrollView.frameLayoutGuide.widthAnchor, constant: -32)
+        ])
+
+        var buttonConfig = UIButton.Configuration.borderedProminent()
+        buttonConfig.title = "开始"
+        buttonConfig.contentInsets = .init(top: 14, leading: 16, bottom: 14, trailing: 16)
+        buttonConfig.background.cornerRadius = Theme.Metrics.controlRadius
+        buttonConfig.titleTextAttributesTransformer = .init { incoming in
+            var outgoing = incoming
+            outgoing.font = .preferredFont(forTextStyle: .headline)
+            return outgoing
+        }
+        startButton.configuration = buttonConfig
+        startButton.isEnabled = false
+        startButton.addAction(UIAction { [weak self] _ in self?.startQuiz() }, for: .touchUpInside)
+
+        view.addSubview(scrollView)
+        view.addSubview(startButton)
+        scrollView.translatesAutoresizingMaskIntoConstraints = false
+        startButton.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            scrollView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
+            scrollView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            scrollView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            scrollView.bottomAnchor.constraint(equalTo: startButton.topAnchor, constant: -12),
+
+            startButton.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 16),
+            startButton.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -16),
+            startButton.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor, constant: -12)
+        ])
+
+        updateCards(animated: false)
+    }
+
+    private func makeCaption(_ text: String) -> UILabel {
+        let label = UILabel()
+        label.text = text
+        label.font = .preferredFont(forTextStyle: .caption1)
+        label.textColor = .secondaryLabel
+        return label
+    }
+
+    private func makeModeCard(item: ModeItem, index: Int) -> UIView {
+        let card = UIView()
+        card.tag = index
+        card.backgroundColor = Theme.Color.cardBackground
+        card.layer.cornerRadius = Theme.Metrics.cardRadius
+        card.layer.borderWidth = 1.5
+        card.layer.borderColor = UIColor.clear.cgColor
+
+        let tile = UIView()
+        tile.backgroundColor = Theme.Color.accent.withAlphaComponent(0.12)
+        tile.layer.cornerRadius = 10
+        let icon = UIImageView(image: UIImage(systemName: item.icon,
+                                              withConfiguration: UIImage.SymbolConfiguration(pointSize: 17, weight: .medium)))
+        icon.tintColor = Theme.Color.accent
+        tile.addSubview(icon)
+        tile.translatesAutoresizingMaskIntoConstraints = false
+        icon.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            tile.widthAnchor.constraint(equalToConstant: 38),
+            tile.heightAnchor.constraint(equalToConstant: 38),
+            icon.centerXAnchor.constraint(equalTo: tile.centerXAnchor),
+            icon.centerYAnchor.constraint(equalTo: tile.centerYAnchor)
+        ])
+
+        let titleLabel = UILabel()
+        titleLabel.text = item.mode.rawValue
+        titleLabel.font = .preferredFont(forTextStyle: .headline)
+        let detailLabel = UILabel()
+        detailLabel.text = item.detail
+        detailLabel.font = .preferredFont(forTextStyle: .caption1)
+        detailLabel.textColor = .secondaryLabel
+        let textStack = UIStackView(arrangedSubviews: [titleLabel, detailLabel])
+        textStack.axis = .vertical
+        textStack.spacing = 2
+
+        let check = UIImageView(image: UIImage(systemName: "circle",
+                                               withConfiguration: UIImage.SymbolConfiguration(pointSize: 20, weight: .regular)))
+        check.tintColor = .tertiaryLabel
+        check.setContentHuggingPriority(.required, for: .horizontal)
+        checkViews.append(check)
+
+        let row = UIStackView(arrangedSubviews: [tile, textStack, check])
+        row.axis = .horizontal
+        row.alignment = .center
+        row.spacing = 12
+        row.isUserInteractionEnabled = false
+        card.addSubview(row)
+        row.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            row.topAnchor.constraint(equalTo: card.topAnchor, constant: 12),
+            row.leadingAnchor.constraint(equalTo: card.leadingAnchor, constant: 14),
+            row.trailingAnchor.constraint(equalTo: card.trailingAnchor, constant: -14),
+            row.bottomAnchor.constraint(equalTo: card.bottomAnchor, constant: -12)
+        ])
+
+        card.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(cardTapped(_:))))
+        return card
+    }
+
+    private func setupCountControl() {
+        countControl.insertSegment(withTitle: "全部 \(request.words.count) 题", at: 0, animated: false)
+        if request.words.count > 10 {
+            countControl.insertSegment(withTitle: "随机 10 题", at: 1, animated: false)
+        }
+        countControl.selectedSegmentIndex = 0
+    }
+
+    @objc private func cardTapped(_ gesture: UITapGestureRecognizer) {
+        guard let card = gesture.view, selectedIndex != card.tag else { return }
+        selectedIndex = card.tag
+        Haptics.selection()
+        updateCards(animated: true)
+        startButton.isEnabled = true
+    }
+
+    private func updateCards(animated: Bool) {
+        for (index, card) in cardViews.enumerated() {
+            let selected = index == selectedIndex
+            let apply = {
+                card.backgroundColor = selected ? Theme.Color.accent.withAlphaComponent(0.12) : Theme.Color.cardBackground
+                card.layer.borderColor = selected ? Theme.Color.accent.cgColor : UIColor.clear.cgColor
+                self.checkViews[index].image = UIImage(systemName: selected ? "checkmark.circle.fill" : "circle",
+                                                       withConfiguration: UIImage.SymbolConfiguration(pointSize: 20, weight: .regular))
+                self.checkViews[index].tintColor = selected ? Theme.Color.accent : .tertiaryLabel
+            }
+            if animated {
+                UIView.animate(withDuration: 0.2, animations: apply)
             } else {
-            content.text = "随机十个"
+                apply()
-            content.secondaryText = "从词库中随机抽取 10 题"
+            }
         }
-        cell.contentConfiguration = content
-        cell.accessoryType = .disclosureIndicator
-        return cell
     }
 
-    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+    private func startQuiz() {
-        tableView.deselectRow(at: indexPath, animated: true)
+        guard let selectedIndex else { return }
-        let words = indexPath.row == 0 ? request.words : Array(request.words.shuffled().prefix(10))
+        Haptics.selection()
-        navigationController?.pushViewController(QuizViewController(config: QuizConfig(mode: request.mode, words: words)), animated: true)
+        let words = countControl.selectedSegmentIndex == 0
+            ? request.words
+            : Array(request.words.shuffled().prefix(10))
+        let config = QuizConfig(mode: items[selectedIndex].mode, words: words)
+        navigationController?.pushViewController(QuizViewController(config: config), animated: true)
     }
 }

LearnEnglish/LearnEnglish/Views/QuizViewController.swift

@@ -23,6 +23,11 @@ final class QuizViewController: UIViewController {
     private let resultPhoneticLabel = UILabel()
     private let nextButton = UIButton(type: .system)
     private var optionButtons: [UIButton] = []
+    private var optionIcons: [UIImageView] = []
+
+    private let promptStack = UIStackView()
+    private let inputStack = UIStackView()
+    private let resultStack = UIStackView()
 
     private var current: QuizQuestion? {
         questions.indices.contains(currentIndex) ? questions[currentIndex] : nil
@@ -41,6 +46,7 @@ final class QuizViewController: UIViewController {
         super.viewDidLoad()
         view.backgroundColor = .systemBackground
         title = config.mode.rawValue
+        navigationItem.largeTitleDisplayMode = .never
         buildLayout()
         showQuestion()
     }
@@ -57,11 +63,17 @@ final class QuizViewController: UIViewController {
     // MARK: - Layout
 
     private func buildLayout() {
+        progressView.transform = CGAffineTransform(scaleX: 1, y: 0.75)
+        progressView.trackTintColor = .tertiarySystemFill
+        progressView.progressTintColor = Theme.Color.accent
+
         countLabel.font = .preferredFont(forTextStyle: .caption1)
         countLabel.textColor = .secondaryLabel
         countLabel.textAlignment = .center
 
-        promptLabel.font = .systemFont(ofSize: config.mode == .enToZh ? 44 : 34, weight: .bold)
+        promptLabel.font = config.mode == .enToZh
+            ? Theme.Font.wordHero(size: 40)
+            : .systemFont(ofSize: 34, weight: .bold)
         promptLabel.textAlignment = .center
         promptLabel.numberOfLines = 0
 
@@ -69,7 +81,10 @@ final class QuizViewController: UIViewController {
         phoneticLabel.textColor = .secondaryLabel
         phoneticLabel.textAlignment = .center
 
-        speakerButton.setImage(UIImage(systemName: "speaker.wave.2.fill"), for: .normal)
+        speakerButton.setImage(UIImage(systemName: "speaker.wave.2.fill",
+                                       withConfiguration: UIImage.SymbolConfiguration(pointSize: 18, weight: .medium)),
+                               for: .normal)
+        speakerButton.tintColor = Theme.Color.accent
         speakerButton.addAction(UIAction { [weak self] _ in
             guard let self, let question = current else { return }
             speech.speak(question.prompt)
@@ -91,6 +106,7 @@ final class QuizViewController: UIViewController {
 
         var nextConfig = UIButton.Configuration.borderedProminent()
         nextConfig.contentInsets = .init(top: 12, leading: 16, bottom: 12, trailing: 16)
+        nextConfig.background.cornerRadius = Theme.Metrics.controlRadius
         nextButton.configuration = nextConfig
         nextButton.addAction(UIAction { [weak self] _ in self?.primaryButtonTapped() }, for: .touchUpInside)
 
@@ -105,18 +121,18 @@ final class QuizViewController: UIViewController {
         headerStack.axis = .vertical
         headerStack.spacing = 8
 
-        let promptStack = UIStackView(arrangedSubviews: [promptLabel, phoneticLabel, speakerButton])
         promptStack.axis = .vertical
         promptStack.spacing = 12
         promptStack.alignment = .center
+        [promptLabel, phoneticLabel, speakerButton].forEach { promptStack.addArrangedSubview($0) }
 
-        let inputStack = UIStackView(arrangedSubviews: [optionsStack, spellingView, dictationView, spellingHintLabel])
         inputStack.axis = .vertical
         inputStack.spacing = 16
+        [optionsStack, spellingView, dictationView, spellingHintLabel].forEach { inputStack.addArrangedSubview($0) }
 
-        let resultStack = UIStackView(arrangedSubviews: [resultLabel, resultPhoneticLabel, nextButton])
         resultStack.axis = .vertical
         resultStack.spacing = 12
+        [resultLabel, resultPhoneticLabel, nextButton].forEach { resultStack.addArrangedSubview($0) }
 
         let mainStack = UIStackView(arrangedSubviews: [headerStack, promptStack, inputStack, resultStack, UIView()])
         mainStack.axis = .vertical
@@ -137,8 +153,8 @@ final class QuizViewController: UIViewController {
         guard let question = current else { return }
         selectedOption = nil
 
-        progressView.progress = Float(currentIndex) / Float(questions.count)
+        progressView.setProgress(Float(currentIndex) / Float(questions.count), animated: true)
-        countLabel.text = "第 \(currentIndex + 1) / \(questions.count) 题"
+        countLabel.text = "\(currentIndex + 1) / \(questions.count)"
         promptLabel.text = question.prompt
         phoneticLabel.isHidden = config.mode != .enToZh
         speakerButton.isHidden = config.mode != .enToZh
@@ -188,66 +204,119 @@ final class QuizViewController: UIViewController {
 
     private func buildOptionButtons(for question: QuizQuestion) {
         optionsStack.arrangedSubviews.forEach { $0.removeFromSuperview() }
-        optionButtons = question.options.map { option in
+        optionButtons = []
+        optionIcons = []
+        for option in question.options {
             let button = UIButton(type: .system)
-            var config = UIButton.Configuration.bordered()
+            var buttonConfig = UIButton.Configuration.bordered()
-            config.title = option
+            buttonConfig.title = option
-            config.titleTextAttributesTransformer = .init { incoming in
+            buttonConfig.titleAlignment = .leading
+            buttonConfig.baseForegroundColor = .label
+            buttonConfig.background.backgroundColor = Theme.Color.cardBackground
+            buttonConfig.background.cornerRadius = Theme.Metrics.controlRadius
+            buttonConfig.background.strokeColor = .separator
+            buttonConfig.background.strokeWidth = 1
+            if self.config.mode == .zhToEn, let w = self.config.words.first(where: { $0.word == option }) {
+                buttonConfig.subtitle = w.phonetic
+            }
+            buttonConfig.titleTextAttributesTransformer = .init { incoming in
                 var outgoing = incoming
                 outgoing.font = .preferredFont(forTextStyle: .headline)
                 return outgoing
             }
-            if self.config.mode == .zhToEn, let w = self.config.words.first(where: { $0.word == option }) {
+            buttonConfig.contentInsets = .init(top: 14, leading: 16, bottom: 14, trailing: 44)
-                config.subtitle = w.phonetic
+            button.configuration = buttonConfig
-            }
+            button.contentHorizontalAlignment = .leading
-            config.contentInsets = .init(top: 10, leading: 16, bottom: 10, trailing: 16)
+
-            button.configuration = config
+            let icon = UIImageView()
+            icon.isHidden = true
+            icon.contentMode = .scaleAspectFit
+            button.addSubview(icon)
+            icon.translatesAutoresizingMaskIntoConstraints = false
+            NSLayoutConstraint.activate([
+                icon.trailingAnchor.constraint(equalTo: button.trailingAnchor, constant: -14),
+                icon.centerYAnchor.constraint(equalTo: button.centerYAnchor)
+            ])
+
             button.addAction(UIAction { [weak self] _ in
                 self?.selectOption(option, for: question)
             }, for: .touchUpInside)
             optionsStack.addArrangedSubview(button)
-            return button
+            optionButtons.append(button)
+            optionIcons.append(icon)
         }
     }
 
     private func selectOption(_ option: String, for question: QuizQuestion) {
         guard selectedOption == nil else { return }
         selectedOption = option
-        if option != question.answer {
+        let correct = option == question.answer
+        if !correct {
             wrongWords.append(question.word)
         }
+        correct ? Haptics.correct() : Haptics.wrong()
+
         for (index, button) in optionButtons.enumerated() {
             let value = question.options[index]
-            button.isEnabled = false
+            button.isUserInteractionEnabled = false
+            var buttonConfig = button.configuration
             if value == question.answer {
-                button.configuration?.baseForegroundColor = .systemGreen
+                buttonConfig?.background.strokeColor = Theme.Color.correct
+                buttonConfig?.background.strokeWidth = 2
+                buttonConfig?.background.backgroundColor = Theme.Color.correct.withAlphaComponent(0.12)
+                buttonConfig?.baseForegroundColor = Theme.Color.correct
+                optionIcons[index].image = UIImage(systemName: "checkmark.circle.fill",
+                                                   withConfiguration: UIImage.SymbolConfiguration(pointSize: 20, weight: .semibold))
+                optionIcons[index].tintColor = Theme.Color.correct
+                optionIcons[index].isHidden = false
             } else if value == option {
-                button.configuration?.baseForegroundColor = .systemRed
+                buttonConfig?.background.strokeColor = Theme.Color.wrong
+                buttonConfig?.background.strokeWidth = 2
+                buttonConfig?.background.backgroundColor = Theme.Color.wrong.withAlphaComponent(0.12)
+                buttonConfig?.baseForegroundColor = Theme.Color.wrong
+                optionIcons[index].image = UIImage(systemName: "xmark.circle.fill",
+                                                   withConfiguration: UIImage.SymbolConfiguration(pointSize: 20, weight: .semibold))
+                optionIcons[index].tintColor = Theme.Color.wrong
+                optionIcons[index].isHidden = false
             } else {
-                button.configuration?.baseForegroundColor = .systemGray
+                button.alpha = 0.4
+            }
+            button.configuration = buttonConfig
+        }
+        for icon in optionIcons where !icon.isHidden {
+            icon.transform = CGAffineTransform(scaleX: 0.4, y: 0.4)
+            UIView.animate(withDuration: 0.35, delay: 0, usingSpringWithDamping: 0.5,
+                           initialSpringVelocity: 0, options: .allowUserInteraction) {
+                icon.transform = .identity
             }
         }
-        showResult(option == question.answer, for: question)
+        showResult(correct, for: question)
     }
 
     private func submitSpelling(_ typed: String, for question: QuizQuestion) {
         guard selectedOption == nil else { return }
         selectedOption = typed
-        if typed != question.answer {
+        let correct = typed == question.answer
+        if !correct {
             wrongWords.append(question.word)
         }
+        correct ? Haptics.correct() : Haptics.wrong()
         spellingView.deactivate()
-        showResult(typed == question.answer, for: question)
+        spellingView.showResultState(correct: correct)
+        showResult(correct, for: question)
     }
 
     private func submitDictation(_ typed: String, for question: QuizQuestion) {
         guard selectedOption == nil else { return }
         selectedOption = typed
-        if typed != question.answer {
+        let correct = typed == question.answer
+        if !correct {
             wrongWords.append(question.word)
         }
+        correct ? Haptics.correct() : Haptics.wrong()
         dictationView.deactivate()
-        showResult(typed == question.answer, for: question)
+        dictationView.showResultState(correct: correct)
+        showResult(correct, for: question)
     }
 
     private func showResult(_ correct: Bool, for question: QuizQuestion) {
@@ -258,7 +327,7 @@ final class QuizViewController: UIViewController {
         } else {
             resultLabel.text = correct ? "回答正确" : "正确答案：\(question.answer)"
         }
-        resultLabel.textColor = correct ? .systemGreen : .systemRed
+        resultLabel.textColor = correct ? Theme.Color.correct : Theme.Color.wrong
         resultLabel.isHidden = false
 
         nextButton.configuration?.title = currentIndex + 1 < questions.count ? "下一题" : "查看成绩"
@@ -268,7 +337,7 @@ final class QuizViewController: UIViewController {
 
     @objc private func speakCurrentWord() {
         guard let question = current else { return }
-        speech.speak(question.answer)
+        speech.speak(question.word.word)
     }
 
     private func primaryButtonTapped() {
@@ -284,15 +353,34 @@ final class QuizViewController: UIViewController {
     }
 
     private func next() {
+        nextButton.isEnabled = false
         if currentIndex + 1 < questions.count {
             currentIndex += 1
-            showQuestion()
+            animateQuestionSwap()
         } else {
             showQuizResult()
         }
     }
 
+    private func animateQuestionSwap() {
+        let stacks = [promptStack, inputStack, resultStack]
+        UIView.animate(withDuration: 0.15, delay: 0, options: .curveEaseIn) {
+            stacks.forEach { $0.alpha = 0 }
+        } completion: { _ in
+            self.showQuestion()
+            stacks.forEach { $0.transform = CGAffineTransform(translationX: 0, y: 12) }
+            UIView.animate(withDuration: 0.3, delay: 0,
+                           options: [.curveEaseOut, .allowUserInteraction, .beginFromCurrentState]) {
+                stacks.forEach {
+                    $0.alpha = 1
+                    $0.transform = .identity
+                }
+            }
+        }
+    }
+
     private func showQuizResult() {
+        progressView.setProgress(1, animated: true)
         let resultView = QuizResultView(
             total: questions.count,
             wrongWords: wrongWords,
@@ -303,10 +391,16 @@ final class QuizViewController: UIViewController {
                 self?.navigationController?.pushViewController(WordDetailViewController(word: word), animated: true)
             }
         )
-        resultView.translatesAutoresizingMaskIntoConstraints = false
         resultView.frame = view.bounds
         resultView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+        resultView.alpha = 0
+        resultView.transform = CGAffineTransform(scaleX: 0.95, y: 0.95)
         view.addSubview(resultView)
+        UIView.animate(withDuration: 0.4, delay: 0, usingSpringWithDamping: 0.8,
+                       initialSpringVelocity: 0, options: .curveEaseOut) {
+            resultView.alpha = 1
+            resultView.transform = .identity
+        }
     }
 
     private func restart() {

LearnEnglish/LearnEnglish/Views/SpellingInputView.swift

@@ -76,6 +76,26 @@ final class SpellingInputView: UIView, UITextFieldDelegate {
         refreshBoxes()
     }
 
+    func showResultState(correct: Bool) {
+        let color = correct ? Theme.Color.correct : Theme.Color.wrong
+        for position in blankPositions {
+            boxViews[position].layer.borderColor = color.cgColor
+        }
+    }
+
+    private func popBox(atBlank blankIndex: Int) {
+        guard blankPositions.indices.contains(blankIndex) else { return }
+        let box = boxViews[blankPositions[blankIndex]]
+        UIView.animate(withDuration: 0.25, delay: 0, usingSpringWithDamping: 0.5,
+                       initialSpringVelocity: 0, options: .allowUserInteraction) {
+            box.transform = CGAffineTransform(scaleX: 1.12, y: 1.12)
+        } completion: { _ in
+            UIView.animate(withDuration: 0.2) {
+                box.transform = .identity
+            }
+        }
+    }
+
     @objc private func reactivate() {
         activate()
     }
@@ -95,6 +115,7 @@ final class SpellingInputView: UIView, UITextFieldDelegate {
             filledBlanks[cursorIndex] = String(char).lowercased()
             cursorIndex += 1
             refreshBoxes()
+            popBox(atBlank: cursorIndex - 1)
             onChange?()
         }
         textField.text = nil

LearnEnglish/LearnEnglish/Views/WordCardCell.swift

@@ -0,0 +1,93 @@
+import UIKit
+
+final class WordCardCell: UITableViewCell {
+    private let cardView = UIView()
+    private let wordLabel = UILabel()
+    private let phoneticLabel = UILabel()
+    private let meaningLabel = UILabel()
+    private let speakerButton = UIButton(type: .system)
+    private var word: Word?
+
+    var onSpeak: ((Word) -> Void)?
+
+    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
+        super.init(style: style, reuseIdentifier: reuseIdentifier)
+        backgroundColor = .clear
+        contentView.backgroundColor = .clear
+        selectionStyle = .none
+
+        cardView.backgroundColor = Theme.Color.cardBackground
+        cardView.layer.cornerRadius = Theme.Metrics.cardRadius
+        contentView.addSubview(cardView)
+        cardView.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            cardView.topAnchor.constraint(equalTo: contentView.topAnchor, constant: 5),
+            cardView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor, constant: 16),
+            cardView.trailingAnchor.constraint(equalTo: contentView.trailingAnchor, constant: -16),
+            cardView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor, constant: -5)
+        ])
+
+        wordLabel.font = .preferredFont(forTextStyle: .headline)
+        phoneticLabel.font = .preferredFont(forTextStyle: .caption1)
+        phoneticLabel.textColor = .tertiaryLabel
+        meaningLabel.font = .preferredFont(forTextStyle: .subheadline)
+        meaningLabel.textColor = .secondaryLabel
+
+        let titleRow = UIStackView(arrangedSubviews: [wordLabel, phoneticLabel, UIView()])
+        titleRow.axis = .horizontal
+        titleRow.alignment = .firstBaseline
+        titleRow.spacing = 6
+
+        let textStack = UIStackView(arrangedSubviews: [titleRow, meaningLabel])
+        textStack.axis = .vertical
+        textStack.spacing = 2
+
+        speakerButton.tintColor = Theme.Color.accent
+        speakerButton.addAction(UIAction { [weak self] _ in
+            guard let self, let word else { return }
+            onSpeak?(word)
+        }, for: .touchUpInside)
+        speakerButton.setContentHuggingPriority(.required, for: .horizontal)
+
+        let row = UIStackView(arrangedSubviews: [textStack, speakerButton])
+        row.axis = .horizontal
+        row.alignment = .center
+        row.spacing = 8
+        cardView.addSubview(row)
+        row.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            row.topAnchor.constraint(equalTo: cardView.topAnchor, constant: 10),
+            row.leadingAnchor.constraint(equalTo: cardView.leadingAnchor, constant: 14),
+            row.trailingAnchor.constraint(equalTo: cardView.trailingAnchor, constant: -8),
+            row.bottomAnchor.constraint(equalTo: cardView.bottomAnchor, constant: -10),
+            speakerButton.widthAnchor.constraint(equalToConstant: 44),
+            speakerButton.heightAnchor.constraint(equalToConstant: 44)
+        ])
+    }
+
+    @available(*, unavailable)
+    required init?(coder: NSCoder) { fatalError() }
+
+    func configure(with word: Word) {
+        self.word = word
+        wordLabel.text = word.word
+        phoneticLabel.text = word.phonetic
+        meaningLabel.text = word.meaning
+        updateSpeakerState()
+    }
+
+    func updateSpeakerState() {
+        guard let word else { return }
+        let speaking = SpeechService.shared.isSpeaking(word.word)
+        let symbol = speaking ? "speaker.wave.3.fill" : "speaker.wave.2.fill"
+        speakerButton.setImage(UIImage(systemName: symbol,
+                                       withConfiguration: UIImage.SymbolConfiguration(pointSize: 15, weight: .medium)),
+                               for: .normal)
+        speakerButton.isEnabled = !speaking
+    }
+
+    override func setHighlighted(_ highlighted: Bool, animated: Bool) {
+        super.setHighlighted(highlighted, animated: animated)
+        cardView.setPressed(highlighted, animated: animated)
+    }
+}

LearnEnglish/LearnEnglish/Views/WordDetailViewController.swift

@@ -5,7 +5,10 @@ final class WordDetailViewController: UIViewController {
     private let speech = SpeechService.shared
 
     private let speakButton = UIButton(type: .system)
-    private var isSpeaking: Bool { speech.speakingText == word.word }
+    private let exampleSpeakButton = UIButton(type: .system)
+    private let contentStack = UIStackView()
+    private var speechObserver: NSObjectProtocol?
+    private var didAnimateEntry = false
 
     init(word: Word) {
         self.word = word
@@ -15,28 +18,46 @@ final class WordDetailViewController: UIViewController {
     @available(*, unavailable)
     required init?(coder: NSCoder) { fatalError() }
 
+    deinit {
+        if let speechObserver {
+            NotificationCenter.default.removeObserver(speechObserver)
+        }
+    }
+
     override func viewDidLoad() {
         super.viewDidLoad()
         view.backgroundColor = .systemBackground
         title = word.word
         navigationItem.largeTitleDisplayMode = .never
         buildLayout()
-        updateSpeakButton()
+        updateSpeakState()
-    }
+        speechObserver = NotificationCenter.default.addObserver(
-
+            forName: SpeechService.speakingDidChangeNotification, object: nil, queue: .main
-    override func viewWillAppear(_ animated: Bool) {
+        ) { [weak self] _ in
-        super.viewWillAppear(animated)
+            self?.updateSpeakState()
-        speech.onSpeakingChanged = { [weak self] in
-            self?.updateSpeakButton()
         }
     }
 
-    private func updateSpeakButton() {
+    override func viewDidAppear(_ animated: Bool) {
-        var config = speakButton.configuration
+        super.viewDidAppear(animated)
-        config?.title = isSpeaking ? "朗读中" : "发音"
+        if !didAnimateEntry {
-        config?.image = UIImage(systemName: isSpeaking ? "speaker.wave.3.fill" : "speaker.wave.2.fill")
+            didAnimateEntry = true
-        speakButton.configuration = config
+            contentStack.animateEntry(distance: 16, duration: 0.35)
-        speakButton.isEnabled = !isSpeaking
+        }
+    }
+
+    private func updateSpeakState() {
+        let wordSpeaking = speech.isSpeaking(word.word)
+        speakButton.configuration?.image = UIImage(
+            systemName: wordSpeaking ? "speaker.wave.3.fill" : "speaker.wave.2.fill",
+            withConfiguration: UIImage.SymbolConfiguration(pointSize: 20, weight: .semibold))
+        speakButton.isEnabled = !wordSpeaking
+
+        let exampleSpeaking = speech.isSpeaking(word.example)
+        exampleSpeakButton.configuration?.image = UIImage(
+            systemName: exampleSpeaking ? "speaker.wave.3.fill" : "speaker.wave.2",
+            withConfiguration: UIImage.SymbolConfiguration(pointSize: 15, weight: .medium))
+        exampleSpeakButton.isEnabled = !exampleSpeaking
     }
 
     private func buildLayout() {
@@ -50,55 +71,67 @@ final class WordDetailViewController: UIViewController {
             scrollView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
         ])
 
-        let stack = UIStackView()
+        contentStack.axis = .vertical
-        stack.axis = .vertical
+        contentStack.spacing = 32
-        stack.spacing = 32
+        scrollView.addSubview(contentStack)
-        scrollView.addSubview(stack)
+        contentStack.translatesAutoresizingMaskIntoConstraints = false
-        stack.translatesAutoresizingMaskIntoConstraints = false
         NSLayoutConstraint.activate([
-            stack.topAnchor.constraint(equalTo: scrollView.contentLayoutGuide.topAnchor, constant: 16),
+            contentStack.topAnchor.constraint(equalTo: scrollView.contentLayoutGuide.topAnchor, constant: 24),
-            stack.leadingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.leadingAnchor, constant: 16),
+            contentStack.leadingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.leadingAnchor, constant: 16),
-            stack.trailingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.trailingAnchor, constant: -16),
+            contentStack.trailingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.trailingAnchor, constant: -16),
-            stack.bottomAnchor.constraint(equalTo: scrollView.contentLayoutGuide.bottomAnchor, constant: -16),
+            contentStack.bottomAnchor.constraint(equalTo: scrollView.contentLayoutGuide.bottomAnchor, constant: -16),
-            stack.widthAnchor.constraint(equalTo: scrollView.frameLayoutGuide.widthAnchor, constant: -32)
+            contentStack.widthAnchor.constraint(equalTo: scrollView.frameLayoutGuide.widthAnchor, constant: -32)
         ])
 
-        stack.addArrangedSubview(makeHeader())
+        contentStack.addArrangedSubview(makeHeader())
-        stack.addArrangedSubview(makeCard())
+        contentStack.addArrangedSubview(makeCard())
     }
 
     private func makeHeader() -> UIView {
         let wordLabel = UILabel()
         wordLabel.text = word.word
-        wordLabel.font = .systemFont(ofSize: 48, weight: .bold)
+        wordLabel.font = Theme.Font.wordHero()
         wordLabel.textAlignment = .center
 
+        let phoneticIcon = UIImageView(image: UIImage(
+            systemName: "speaker.wave.2",
+            withConfiguration: UIImage.SymbolConfiguration(pointSize: 13, weight: .medium)))
+        phoneticIcon.tintColor = .secondaryLabel
         let phoneticLabel = UILabel()
         phoneticLabel.text = word.phonetic
         phoneticLabel.font = .preferredFont(forTextStyle: .title3)
         phoneticLabel.textColor = .secondaryLabel
-        phoneticLabel.textAlignment = .center
+        let phoneticRow = UIStackView(arrangedSubviews: [phoneticIcon, phoneticLabel])
+        phoneticRow.axis = .horizontal
+        phoneticRow.alignment = .center
+        phoneticRow.spacing = 6
 
-        var config = UIButton.Configuration.borderedProminent()
+        var buttonConfig = UIButton.Configuration.filled()
-        config.imagePadding = 6
+        buttonConfig.baseBackgroundColor = Theme.Color.accent
-        config.contentInsets = .init(top: 10, leading: 24, bottom: 10, trailing: 24)
+        buttonConfig.baseForegroundColor = .white
-        speakButton.configuration = config
+        buttonConfig.cornerStyle = .capsule
+        speakButton.configuration = buttonConfig
         speakButton.addAction(UIAction { [weak self] _ in
             guard let self else { return }
             speech.speak(word.word)
         }, for: .touchUpInside)
+        speakButton.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            speakButton.widthAnchor.constraint(equalToConstant: 56),
+            speakButton.heightAnchor.constraint(equalToConstant: 56)
+        ])
 
-        let stack = UIStackView(arrangedSubviews: [wordLabel, phoneticLabel, speakButton])
+        let stack = UIStackView(arrangedSubviews: [wordLabel, phoneticRow, speakButton])
         stack.axis = .vertical
-        stack.spacing = 12
+        stack.spacing = 16
         stack.alignment = .center
         return stack
     }
 
     private func makeCard() -> UIView {
         let card = UIView()
-        card.backgroundColor = .quaternarySystemFill.withAlphaComponent(0.5)
+        card.backgroundColor = Theme.Color.cardBackground
-        card.layer.cornerRadius = 16
+        card.layer.cornerRadius = Theme.Metrics.cardRadius
 
         let meaningTitle = makeCaption("释义")
         let meaningLabel = UILabel()
@@ -118,8 +151,9 @@ final class WordDetailViewController: UIViewController {
         exampleMeaningLabel.textColor = .secondaryLabel
         exampleMeaningLabel.numberOfLines = 0
 
-        let exampleSpeakButton = UIButton(type: .system)
+        var ghostConfig = UIButton.Configuration.plain()
-        exampleSpeakButton.setImage(UIImage(systemName: "speaker.wave.2"), for: .normal)
+        ghostConfig.baseForegroundColor = Theme.Color.accent
+        exampleSpeakButton.configuration = ghostConfig
         exampleSpeakButton.addAction(UIAction { [weak self] _ in
             guard let self else { return }
             speech.speak(word.example)

LearnEnglish/LearnEnglish/Views/WordListViewController.swift

@@ -1,60 +1,153 @@
 import UIKit
 
-final class WordListViewController: UITableViewController {
+final class WordListViewController: UIViewController {
     private let category: WordCategory
+    private let colorIndex: Int
+    private let tableView = UITableView(frame: .zero, style: .plain)
+    private let ctaBackground = UIVisualEffectView(effect: UIBlurEffect(style: .systemMaterial))
+    private let quizButton = UIButton(type: .system)
+    private var speechObserver: NSObjectProtocol?
 
-    init(category: WordCategory) {
+    init(category: WordCategory, colorIndex: Int) {
         self.category = category
-        super.init(style: .plain)
+        self.colorIndex = colorIndex
+        super.init(nibName: nil, bundle: nil)
     }
 
     @available(*, unavailable)
     required init?(coder: NSCoder) { fatalError() }
 
+    deinit {
+        if let speechObserver {
+            NotificationCenter.default.removeObserver(speechObserver)
+        }
+    }
+
     override func viewDidLoad() {
         super.viewDidLoad()
         title = category.name
         navigationItem.largeTitleDisplayMode = .never
-        tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
+        view.backgroundColor = .systemBackground
 
-        let quizMenu = UIMenu(title: "", children: [
+        tableView.dataSource = self
-            UIAction(title: QuizMode.enToZh.rawValue) { [weak self] _ in self?.startQuiz(.enToZh) },
+        tableView.delegate = self
-            UIAction(title: QuizMode.zhToEn.rawValue) { [weak self] _ in self?.startQuiz(.zhToEn) },
+        tableView.register(WordCardCell.self, forCellReuseIdentifier: "cell")
-            UIAction(title: QuizMode.spelling.rawValue) { [weak self] _ in self?.startQuiz(.spelling) },
+        tableView.separatorStyle = .none
-            UIAction(title: QuizMode.dictation.rawValue) { [weak self] _ in self?.startQuiz(.dictation) }
+        tableView.backgroundColor = .systemBackground
+        tableView.tableHeaderView = makeHeader()
+        tableView.contentInset.bottom = 92
+        tableView.verticalScrollIndicatorInsets.bottom = 92
+
+        var buttonConfig = UIButton.Configuration.borderedProminent()
+        buttonConfig.title = "开始测验"
+        buttonConfig.image = UIImage(systemName: "pencil.and.list.clipboard")
+        buttonConfig.imagePadding = 6
+        buttonConfig.contentInsets = .init(top: 14, leading: 16, bottom: 14, trailing: 16)
+        buttonConfig.background.cornerRadius = Theme.Metrics.controlRadius
+        buttonConfig.titleTextAttributesTransformer = .init { incoming in
+            var outgoing = incoming
+            outgoing.font = .preferredFont(forTextStyle: .headline)
+            return outgoing
+        }
+        quizButton.configuration = buttonConfig
+        quizButton.addAction(UIAction { [weak self] _ in self?.startQuiz() }, for: .touchUpInside)
+
+        view.addSubview(tableView)
+        view.addSubview(ctaBackground)
+        ctaBackground.contentView.addSubview(quizButton)
+        tableView.translatesAutoresizingMaskIntoConstraints = false
+        ctaBackground.translatesAutoresizingMaskIntoConstraints = false
+        quizButton.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            tableView.topAnchor.constraint(equalTo: view.topAnchor),
+            tableView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            tableView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            tableView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+
+            ctaBackground.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            ctaBackground.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            ctaBackground.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+
+            quizButton.topAnchor.constraint(equalTo: ctaBackground.contentView.topAnchor, constant: 12),
+            quizButton.leadingAnchor.constraint(equalTo: ctaBackground.contentView.leadingAnchor, constant: 16),
+            quizButton.trailingAnchor.constraint(equalTo: ctaBackground.contentView.trailingAnchor, constant: -16),
+            quizButton.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor, constant: -12)
         ])
-        navigationItem.rightBarButtonItem = UIBarButtonItem(title: "测验", menu: quizMenu)
+
+        speechObserver = NotificationCenter.default.addObserver(
+            forName: SpeechService.speakingDidChangeNotification, object: nil, queue: .main
+        ) { [weak self] _ in
+            self?.updateVisibleSpeakers()
+        }
     }
 
-    private func startQuiz(_ mode: QuizMode) {
+    private func makeHeader() -> UIView {
-        if category.words.count <= 10 {
+        let color = Theme.Color.category(at: colorIndex)
-            let config = QuizConfig(mode: mode, words: category.words)
+        let header = UIView(frame: CGRect(x: 0, y: 0, width: 0, height: 56))
-            navigationController?.pushViewController(QuizViewController(config: config), animated: true)
+
-        } else {
+        let tile = UIView()
-            let request = QuizSetupRequest(mode: mode, words: category.words)
+        tile.backgroundColor = color.withAlphaComponent(0.12)
+        tile.layer.cornerRadius = 10
+        let icon = UIImageView(image: UIImage(systemName: category.icon,
+                                              withConfiguration: UIImage.SymbolConfiguration(pointSize: 16, weight: .medium)))
+        icon.tintColor = color
+        icon.contentMode = .scaleAspectFit
+        tile.addSubview(icon)
+        header.addSubview(tile)
+        tile.translatesAutoresizingMaskIntoConstraints = false
+        icon.translatesAutoresizingMaskIntoConstraints = false
+
+        let label = UILabel()
+        label.text = "共 \(category.words.count) 个单词"
+        label.font = .preferredFont(forTextStyle: .subheadline)
+        label.textColor = .secondaryLabel
+        header.addSubview(label)
+        label.translatesAutoresizingMaskIntoConstraints = false
+
+        NSLayoutConstraint.activate([
+            tile.leadingAnchor.constraint(equalTo: header.leadingAnchor, constant: 16),
+            tile.centerYAnchor.constraint(equalTo: header.centerYAnchor),
+            tile.widthAnchor.constraint(equalToConstant: 32),
+            tile.heightAnchor.constraint(equalToConstant: 32),
+            icon.centerXAnchor.constraint(equalTo: tile.centerXAnchor),
+            icon.centerYAnchor.constraint(equalTo: tile.centerYAnchor),
+            label.leadingAnchor.constraint(equalTo: tile.trailingAnchor, constant: 10),
+            label.centerYAnchor.constraint(equalTo: header.centerYAnchor)
+        ])
+        return header
+    }
+
+    private func startQuiz() {
+        Haptics.selection()
+        let request = QuizSetupRequest(words: category.words)
         navigationController?.pushViewController(QuizSetupViewController(request: request), animated: true)
     }
+
+    private func updateVisibleSpeakers() {
+        for cell in tableView.visibleCells.compactMap({ $0 as? WordCardCell }) {
+            cell.updateSpeakerState()
+        }
+    }
 }
 
-    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+extension WordListViewController: UITableViewDataSource, UITableViewDelegate {
+    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
         category.words.count
     }
 
-    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! WordCardCell
         let word = category.words[indexPath.row]
-        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
+        cell.configure(with: word)
-        var content = cell.defaultContentConfiguration()
+        cell.onSpeak = { word in
-        content.text = word.word
+            SpeechService.shared.speak(word.word)
-        content.textProperties.font = .preferredFont(forTextStyle: .headline)
+        }
-        content.secondaryText = word.meaning
-        content.secondaryTextProperties.color = .secondaryLabel
-        cell.contentConfiguration = content
-        cell.accessoryType = .disclosureIndicator
         return cell
     }
 
-    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
-        tableView.deselectRow(at: indexPath, animated: true)
+        Haptics.selection()
-        navigationController?.pushViewController(WordDetailViewController(word: category.words[indexPath.row]), animated: true)
+        navigationController?.pushViewController(
+            WordDetailViewController(word: category.words[indexPath.row]), animated: true)
     }
 }