/* ── ゲームページ共通 ── */
    :root {
      --ok:  #2ECC71;
      --ng:  #E74C3C;
    }

    /* パンくず */
    .breadcrumb { background: var(--gray1); padding: 12px 0; font-size: 12px; color: var(--gray3); }
    .breadcrumb a { color: var(--coral); }
    .breadcrumb span { margin: 0 6px; }

    /* ページヒーロー */
    .page-hero {
      background-color: var(--peach);
      background-image: url("/img/quiz.png");
      background-repeat: no-repeat;
      background-size: 30%;
      background-position: 72% 95%;
      padding: 40px 0 32px;
    }
    .page-hero-label {
      display: inline-flex; align-items: center; gap: 6px;
      background: var(--white); border: 2px solid var(--yellow);
      border-radius: 999px; padding: 6px 16px;
      font-size: 12px; font-weight: 700; color: var(--orange); margin-bottom: 16px;
    }
    .page-hero h1 { font-size: clamp(20px, 3.5vw, 32px); font-weight: 900; color: var(--text); margin-bottom: 8px; }
    .page-hero-desc { font-size: 14px; color: var(--text2); }

    /* ゲームセクション */
    .game-section { padding: 40px 0 72px; background: var(--bg); }

    /* ゲームヘッダー */
    .game-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
    .game-chips { display: flex; gap: 8px; flex-wrap: wrap; }
    .chip { display: inline-flex; align-items: center; gap: 5px; padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 700; background: var(--white); border: 2px solid var(--gray2); color: var(--text); box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
    .chip-rank { border-color: var(--orange); color: var(--orange); }
    .chip-score { border-color: var(--coral); color: var(--coral); }

    /* プログレスバー */
    .quiz-progress { margin-bottom: 20px; }
    .progress-bar-wrap { background: var(--gray2); border-radius: 999px; height: 8px; overflow: hidden; }
    .progress-bar { height: 100%; background: linear-gradient(90deg, var(--coral), var(--orange)); border-radius: 999px; transition: width .4s ease; width: 0%; }
    .progress-meta { display: flex; justify-content: space-between; font-size: 11px; color: var(--gray3); margin-top: 5px; }

    /* ゲームレイアウト */
    .game-layout { display: grid; grid-template-columns: 1fr 360px; gap: 20px; align-items: start; }

    /* 問題板 */
    .board {
      background: linear-gradient(145deg, #037f1a, #038e4d);
      border-radius: 20px;
      padding: 28px;
      min-height: 340px;
      position: relative;
      box-shadow: 0 6px 28px rgba(0,0,0,.2), inset 0 1px 0 rgba(255,255,255,.06);
      border: 8px solid #8B5E00;
    }
    .board-label {
      display: inline-block;
      background: rgba(255,255,255,.15);
      color: rgba(255,255,255,.8);
      font-size: 10px; font-weight: 700;
      padding: 3px 12px; border-radius: 999px;
      letter-spacing: .05em; margin-bottom: 14px;
    }
    .board-meta-text { font-size: 11px; color: rgba(255,255,255,.4); margin-bottom: 14px; }
    #question-text {
      font-family: "Zen Maru Gothic", sans-serif;
      font-size: 18px; font-weight: 700;
      color: #FFF3DC; line-height: 1.75;
      white-space: pre-wrap; min-height: 90px;
    }
    .q-image-box { margin-top: 16px; border-radius: 12px; overflow: hidden; border: 2px solid rgba(255,255,255,.15); }
    .q-image-box img { width: 100%; display: block; max-height: 200px; object-fit: cover; }
    .q-image-caption { background: rgba(0,0,0,.3); color: rgba(255,255,255,.7); font-size: 11px; padding: 6px 10px; text-align: center; }

    /* こたえパネル */
    .answer-panel { background: var(--white); border-radius: 20px; padding: 22px; box-shadow: 0 2px 12px rgba(255,107,107,.1); border: 1px solid var(--gray2); }
    .answer-label { font-size: 11px; font-weight: 700; color: var(--gray3); letter-spacing: .1em; text-transform: uppercase; margin-bottom: 14px; }
    #choices { display: flex; flex-direction: column; gap: 10px; }
    .choiceBtn {
      width: 100%; padding: 13px 16px; border-radius: 12px; border: 2px solid var(--gray2);
      background: var(--white); font-family: "Kiwi Maru", serif; font-size: 14px; font-weight: 500;
      color: var(--text); cursor: pointer; text-align: left; transition: all .15s; line-height: 1.5;
    }
    .choiceBtn:hover:not(:disabled) { border-color: var(--coral); background: var(--pink); transform: translateX(3px); }
    .choiceBtn:disabled { cursor: default; }
    .choiceBtn.correct { border-color: var(--ok) !important; background: #F0FFF4 !important; color: #1A6B3A !important; }
    .choiceBtn.wrong   { border-color: var(--ng) !important; background: #FFF0F0 !important; color: #9B2C2C !important; }

    /* 結果 */
    #result { margin-top: 14px; padding: 16px; border-radius: 12px; background: var(--gray1); border: 1px solid var(--gray2); }
    #result-line { font-family: "Zen Maru Gothic", sans-serif; font-size: 20px; font-weight: 900; margin-bottom: 10px; }
    #explain { font-size: 13px; color: var(--text2); white-space: pre-wrap; line-height: 1.7; margin-bottom: 12px; }
    #btn-next { width: 100%; padding: 12px; background: linear-gradient(135deg, var(--coral), var(--orange)); color: var(--white); border: none; border-radius: 10px; font-family: "Zen Maru Gothic", sans-serif; font-size: 15px; font-weight: 700; cursor: pointer; transition: opacity .2s; }
    #btn-next:hover { opacity: .9; }

    /* ローディング */
    #loading { display: flex; align-items: center; justify-content: center; min-height: 320px; gap: 12px; font-size: 14px; color: var(--gray3); }
    .spinner { width: 24px; height: 24px; border: 3px solid var(--gray2); border-top-color: var(--coral); border-radius: 50%; animation: spin .7s linear infinite; }
    @keyframes spin { to { transform: rotate(360deg); } }

    /* エンドスクリーン */
    #end-screen { background: var(--white); border-radius: 20px; box-shadow: 0 4px 20px rgba(255,107,107,.1); }
    .end-screen { text-align: center; padding: 48px 24px; }
    .end-icon { font-size: 64px; margin-bottom: 16px; }
    .end-title { font-family: "Zen Maru Gothic", sans-serif; font-size: 26px; font-weight: 900; color: var(--text); margin-bottom: 8px; }
    .end-score { font-family: "Zen Maru Gothic", sans-serif; font-size: 52px; font-weight: 900; color: var(--coral); margin: 16px 0 4px; }
    .end-score span { font-size: 20px; color: var(--text2); }
    .end-rank { font-size: 18px; font-weight: 700; color: var(--orange); margin-bottom: 24px; }

    /* 設定 */
    .settings-panel { margin-top: 16px; background: var(--white); border-radius: var(--radius); padding: 14px 18px; box-shadow: 0 2px 8px rgba(0,0,0,.06); border: 1px solid var(--gray2); }
    .settings-header { display: flex; align-items: center; justify-content: space-between; cursor: pointer; user-select: none; }
    .settings-header-label { font-size: 13px; font-weight: 700; color: var(--text2); display: flex; align-items: center; gap: 6px; }
    .settings-body { margin-top: 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .setting-item label { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text2); cursor: pointer; }
    .setting-item input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--coral); }
    .setting-item input[type=range]  { flex: 1; accent-color: var(--coral); }
    .setting-item input[type=number] { width: 70px; padding: 4px 8px; border: 1.5px solid var(--gray2); border-radius: 6px; font-size: 13px; color: var(--text); font-family: inherit; }

    /* リセットボタン */
    #btn-reset {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 8px 20px; border-radius: 999px; font-size: 13px; font-weight: 700;
      cursor: pointer; border: 2px solid var(--coral); background: var(--white); color: var(--coral);
      font-family: "Kiwi Maru", serif; transition: all .2s;
    }
    #btn-reset:hover { background: var(--coral); color: var(--white); }

    /* レスポンシブ */
    @media (max-width: 920px) {
      .game-layout { grid-template-columns: 1fr; }
    }
    @media (max-width: 640px) {
      .page-hero { background-image: none; }
      #question-text { font-size: 16px; }
      .settings-body { grid-template-columns: 1fr; }
    }