/* 全体の背景調整 */
body {
    background: linear-gradient(to bottom right, #f0f4f8, #d9e6f6);
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
}

/* 問題表示エリア */
.question-box {
    background: #fff;
    padding: 20px;
    margin: 15px auto;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    max-width: 700px;
}

.question-box p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #333;
}

ul {
    list-style: none;
    padding: 0;
    margin-bottom: 20px;
}

ul li {
    margin-bottom: 10px;
}

input[type="radio"] {
    transform: scale(1.2);
    margin-right: 8px;
    accent-color: #007bff;
}

label {
    font-size: 1rem;
    color: #555;
}

#submit-btn {
    display: block;
    width: 200px;
    margin: 20px auto;
    background: linear-gradient(90deg, #007bff, #00c6ff);
    color: #fff;
    padding: 12px 20px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

#submit-btn:hover {
    background: linear-gradient(90deg, #0056b3, #0090cc);
    transform: translateY(-3px);
}