body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin: 0;
    padding: 0;
    background-color: #f4f7f6; /* 배경색 추가 */
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    width: 90%;
    max-width: 1000px;
    padding: 20px;
}

h1 {
    margin-bottom: 40px;
    color: #007bff;
}

/* --- 버전 선택 배너 스타일 --- */
.banner-wrapper {
    display: flex;
    gap: 30px;
    justify-content: center;
}

.banner {
    flex: 1;
    padding: 40px 20px;
    border-radius: 15px;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.banner:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.pc-color {
    background-color: #e6f7ff;
    border: 3px solid #007bff;
}

.mobile-color {
    background-color: #fff0e6;
    border: 3px solid #ff9900;
}



/* 📱 모바일 반응형: 화면 너비 600px 이하 */
@media (max-width: 600px) {
    .banner-wrapper {
        flex-direction: column; 
        gap: 20px;
    }

    .banner {
        width: 90%;
        margin: 0 auto;
        padding: 30px 15px;
    }
    
    .modal-content {
        margin: 15% auto; 
    }
}