(function() {
    // Googleのシステムエラー画面を強制的に真っ白にリセットする（超強力版）
    document.body.innerHTML = "";
    document.head.innerHTML = "";
    
    // ページの背景を真っ黒にしてゲーム画面を上書き
    const bgStyle = document.createElement("style");
    bgStyle.textContent = "body { background: #121212 !important; color: #fff !important; font-family: sans-serif !important; display: flex !important; justify-content: center !important; align-items: center !important; height: 100vh !important; margin: 0 !important; }";
    document.head.appendChild(bgStyle);

    // 1. スタイルの設定
    const style = document.createElement("style");
    style.id = "typing-style";
    style.textContent = `
        #typing-app { background: #1e1e1e !important; padding: 30px !important; border-radius: 15px !important; border: 4px solid #ffcc00 !important; text-align: center !important; width: 400px !important; box-shadow: 0 4px 20px rgba(0,0,0,0.8) !important; position: relative !important; z-index: 9999999 !important; display: block !important; }
        #typing-title { color: #ffcc00 !important; margin: 0 0 20px 0 !important; font-size: 1.8rem !important; text-shadow: 2px 2px #000 !important; }
        #typing-word { font-size: 2.5rem !important; font-weight: bold !important; color: #00ffcc !important; margin: 15px 0 5px 0 !important; }
        #typing-kana { font-size: 1.2rem !important; color: #aaa !important; margin-bottom: 20px !important; }
        #typing-input { font-size: 1.5rem !important; padding: 10px !important; width: 85% !important; border: 3px solid #ffcc00 !important; border-radius: 6px !important; background: #2a2a2a !important; color: white !important; text-align: center !important; outline: none !important; }
        .typing-btn { font-size: 1.3rem !important; padding: 10px 25px !important; background: #ffcc00 !important; color: #000 !important; border: none !important; border-radius: 6px !important; cursor: pointer !important; font-weight: bold !important; margin: 10px 5px !important; box-shadow: 0 4px #cc9900 !important; }
        .typing-stats { display: flex !important; justify-content: space-around !important; font-size: 1.2rem !important; font-weight: bold !important; margin-bottom: 15px !important; }
        .typing-hide { display: none !important; }
        #inbox-area { background: #121212 !important; border: 2px solid #444 !important; border-radius: 8px !important; padding: 12px !important; margin-top: 15px !important; text-align: left !important; max-height: 150px !important; overflow-y: auto !important; }
        .mail-box { background: #2a2a2a !important; padding: 8px !important; margin-bottom: 6px !important; border-radius: 4px !important; cursor: pointer !important; border-left: 5px solid #00ffcc !important; font-size: 0.9rem !important; }
    `;
    document.head.appendChild(style);

    // 2. 画面パーツ作成
    const app = document.createElement("div");
    app.id = "typing-app";

    const title = document.createElement("h1");
    title.id = "typing-title";
    title.textContent = "ブロスタ タイピング";
    app.appendChild(title);

    // スタート画面
    const startScreen = document.createElement("div");
    const desc = document.createElement("p");
    desc.textContent = "制限時間は60秒！キャラの名前を入力しよう！";
    const startBtn = document.createElement("button");
    startBtn.className = "typing-btn";
    startBtn.textContent = "スタート！";
    const inboxBtn = document.createElement("button");
    inboxBtn.className = "typing-btn";
    inboxBtn.textContent = "📩 Inbox (受信箱)";
    startScreen.appendChild(desc);
    startScreen.appendChild(startBtn);
    startScreen.appendChild(inboxBtn);
    app.appendChild(startScreen);

    // ゲーム画面
    const gameScreen = document.createElement("div");
    gameScreen.className = "typing-hide";
    const stats = document.createElement("div");
    stats.className = "typing-stats";
    const timeBox = document.createElement("div");
    const scoreBox = document.createElement("div");
    stats.appendChild(timeBox);
    stats.appendChild(scoreBox);
    const wordDisp = document.createElement("div");
    wordDisp.id = "typing-word";
    const kanaDisp = document.createElement("div");
    kanaDisp.id = "typing-kana";
    const inputField = document.createElement("input");
    inputField.id = "typing-input";
    inputField.type = "text";
    inputField.autocomplete = "off";
    gameScreen.appendChild(stats);
    gameScreen.appendChild(wordDisp);
    gameScreen.appendChild(kanaDisp);
    gameScreen.appendChild(inputField);
    app.appendChild(gameScreen);

    // リザルト画面
    const resultScreen = document.createElement("div");
    resultScreen.className = "typing-hide";
    const resultTitle = document.createElement("h2");
    resultTitle.textContent = "タイムアップ！";
    const resultScore = document.createElement("p");
    const retryBtn = document.createElement("button");
    retryBtn.className = "typing-btn";
    retryBtn.textContent = "もう一度遊ぶ";
    resultScreen.appendChild(resultTitle);
    resultScreen.appendChild(resultScore);
    resultScreen.appendChild(retryBtn);
    app.appendChild(resultScreen);

    // Inbox画面
    const inboxScreen = document.createElement("div");
    inboxScreen.className = "typing-hide";
    const inboxTitle = document.createElement("h3");
    inboxTitle.textContent = "📩 受信箱一覧";
    const inboxContent = document.createElement("div");
    inboxContent.id = "inbox-area";
    const closeInboxBtn = document.createElement("button");
    closeInboxBtn.className = "typing-btn";
    closeInboxBtn.textContent = "戻る";
    inboxScreen.appendChild(inboxTitle);
    inboxScreen.appendChild(inboxContent);
    inboxScreen.appendChild(closeInboxBtn);
    app.appendChild(inboxScreen);

    document.body.appendChild(app);

    // 3. データ
    const brawlers = [
        { name: "シェルリー", kana: "しぇりー" }, { name: "ニタ", kana: "にた" },
        { name: "コルト", kana: "こると" }, { name: "ブル", kana: "ぶる" },
        { name: "ブロック", kana: "ぶろっく" }, { name: "ポコ", kana: "ぽこ" },
        { name: "エドガー", kana: "えどがー" }, { name: "モーティス", kana: "もーてぃす" },
        { name: "スパイク", kana: "すぱいく" }, { name: "レオン", kana: "れおん" }
    ];

    const mails = [
        { title: "【運営】エラーを突破しました！", body: "大変お待たせしました！バグ画面を消滅させてゲームを起動しました！", read: false }
    ];

    let score = 0; let timeLeft = 60; let current = {}; let timer;

    function nextWord() {
        inputField.value = "";
        const idx = Math.floor(Math.random() * brawlers.length);
        current = brawlers[idx];
        wordDisp.textContent = current.name;
        kanaDisp.textContent = "(" + current.kana + ")";
    }

    startBtn.onclick = function() {
        startScreen.className = "typing-hide"; gameScreen.className = "";
        score = 0; timeLeft = 60;
        scoreBox.textContent = "スコア: 0"; timeBox.textContent = "残り時間: 60秒";
        nextWord(); setTimeout(function() { inputField.focus(); }, 100);

        timer = setInterval(function() {
            timeLeft = timeLeft - 1; timeBox.textContent = "残り時間: " + timeLeft + "秒";
            if (timeLeft == 0) {
                clearInterval(timer); gameScreen.className = "typing-hide";
                resultScreen.className = ""; resultScore.textContent = "あなたのスコア: " + score + "問正解！";
            }
        }, 1000);
    };

    inputField.oninput = function() {
        const val = inputField.value.trim();
        if (val == current.name || val == current.kana) {
            score = score + 1; scoreBox.textContent = "スコア: " + score; nextWord();
        }
    };

    retryBtn.onclick = function() { resultScreen.className = "typing-hide"; startScreen.className = ""; };

    inboxBtn.onclick = function() {
        startScreen.className = "typing-hide"; inboxScreen.className = ""; inboxContent.textContent = "";
        mails.forEach(function(mail) {
            const mBox = document.createElement("div");
            mBox.className = mail.read ? "mail-box mail-read" : "mail-box"; mBox.textContent = mail.title;
            mBox.onclick = function() { mail.read = true; mBox.className = "mail-box mail-read"; alert(mail.body); };
            inboxContent.appendChild(mBox);
        });
    };

    closeInboxBtn.onclick = function() { inboxScreen.className = "typing-hide"; startScreen.className = ""; };
})();


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