body {
            font-family: 'Jua', sans-serif;
            background-color: #f5f5eb; /* 따뜻한 아이보리 배경 */
            /* 터치 시 글자 선택 방지 등 앱처럼 보이게 설정 */
            user-select: none;
            -webkit-user-select: none;
            -webkit-touch-callout: none;
            touch-action: none;
            overflow: hidden;
        }
        
        .btn-press {
            transition: transform 0.1s ease;
        }
        .btn-press:active {
            transform: scale(0.95);
        }

        .modal-panel {
            background-color: #fffaf0;
            border: 4px solid white;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }