body { font-family: 'Noto Sans TC', sans-serif; background: #f0fdf4; margin: 0; padding: 0; text-align: center; color: #14532d; }
    h1 { margin: 16px 0 8px; color: #15803d; }
    .forest { display: flex; justify-content: center; gap: 20px; margin-top: 20px; flex-wrap: wrap; }
    .tree { width: 120px; height: 160px; background: #4ade80; border-radius: 80px 80px 0 0; position: relative; box-shadow: inset 0 -8px 0 #15803d; }
    .trunk { position: absolute; bottom: -40px; left: 45px; width: 30px; height: 50px; background: #78350f; border-radius: 6px; }
    .apple { position: absolute; font-size: 28px; transition: transform 0.3s; }
    .apple:hover { transform: scale(1.2); }
    .question { font-size: 22px; margin-top: 40px; color: #166534; }
    .options { margin-top: 20px; display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
    .option { background: #dcfce7; border: 2px solid #86efac; color: #14532d; padding: 12px 24px; font-size: 22px; border-radius: 10px; cursor: pointer; transition: background 0.2s, transform 0.2s; user-select:none }
    .option:hover { background: #bbf7d0; transform: scale(1.05); }
    .option.wrong { background: #fee2e2; border-color: #fca5a5; pointer-events: none; }
    .option.correct { background: #bbf7d0; border-color: #22c55e; }
    #status { font-weight: 600; margin-top: 20px; font-size: 18px; }
    button { margin-top: 24px; background: #22c55e; border: none; color: #fff; font-size: 18px; padding: 10px 20px; border-radius: 8px; cursor: pointer; }
    button:hover { background: #16a34a; }
    .controls { display:flex; justify-content:center; align-items:center; gap:12px; margin-top:10px; }
    .voice-toggle { background:#fef9c3; border:2px solid #facc15; color:#854d0e; padding:6px 14px; border-radius:8px; font-size:16px; cursor:pointer; }