body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
}

h1 {
    font-size: 2em;
    font-weight: 700;
    color: #676767;
    margin-bottom: 1.5em;
}

.card {
    background-color: #f0f2f5;
    padding: 2.5em;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 0 auto;
}

.instruction {
    font-size: 1.2em;
    font-weight: 700;
    color: #555;
    margin-bottom: 0.5em;
}

.question {
    font-size: 1em;
    color: #777;
    margin-bottom: 2em;
}

.button-group {
    display: flex;
    justify-content: center;
    gap: 1em;
}

.btn {
    padding: 1em 2em;
    font-size: 1em;
    font-weight: 700;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    white-space: nowrap;
}

.btn-primary {
    background-color: #fff;
    color: #555;
    text-decoration-line: none;
}

.btn-primary:hover {
    background-color: #00adfe;
    color:#fff;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: #fff;
    color: #555;
    text-decoration-line: none;
}

.btn-secondary:hover {
    background-color: #00adfe;
    color:#fff;
    transform: translateY(-2px);
}

.button-backgroup {
    padding: 40px 0 0;
}

.btn-back {
    background-color: #b9b9b9;
    color: #fff;
    text-decoration-line: none;
}

/*�w�b�_�[*/
#wrapHeader {
    display: flex;
    flex-direction: column-reverse;
    margin: 15px 0 25px;
}

@media screen and (max-width:767px) {
    #wrapHeader {
        display: block;
        margin: 15px 0 25px;
    }

    .button-group {
        display: flex;
        justify-content: center;
        gap: 1em;
        flex-direction: column;
    }
}