body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:#f0f2f5;margin:0;display:flex;justify-content:center;min-height:100vh;text-align:center;-webkit-user-select:none;user-select:none}.game-card{background:#fff;padding:20px;width:100%;max-width:400px;display:flex;flex-direction:column;justify-content:center}.scoreboard{display:flex;justify-content:space-around;background:#eee;padding:10px;border-radius:12px;margin:20px 0}.score-box strong{display:block;font-size:1.5rem;color:#2196f3}.battle-area{display:flex;justify-content:space-between;align-items:center;margin:30px 0;font-size:1.2rem}.hand{font-size:4rem;transition:transform .2s}.result-msg{font-size:1.5rem;font-weight:700;margin-bottom:30px;min-height:30px}.buttons-area{display:flex;justify-content:center;gap:15px}.choice-btn{background-color:#fff;border:2px solid #ddd;border-radius:50%;width:80px;height:80px;font-size:2.5rem;cursor:pointer;touch-action:manipulation}.choice-btn:active{background-color:#e3f2fd;border-color:#2196f3}