body {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
    color: #333;
}

.container {
    max-width: 800px;
    margin: auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1 {
    color: #1a73e8; /* ソフトバンクのブランドカラー（青系）を意識 */
    text-align: center;
    margin-bottom: 20px;
}

.question-group {
    margin-bottom: 25px;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: #f9f9f9;
}

.question-title {
    font-weight: bold;
    margin-bottom: 10px;
    color: #333;
}

label {
    display: block;
    margin-bottom: 8px;
    cursor: pointer;
    font-size: 0.95em;
}

input[type="radio"] {
    margin-right: 8px;
    vertical-align: middle;
}

.condition-list {
    list-style-type: disc;
    margin-left: 20px;
    margin-bottom: 10px;
    font-size: 0.9em;
    color: #555;
}

.note {
    font-size: 0.9em;
    color: #666;
    background-color: #e9f3fd;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 10px;
    border-left: 3px solid #1a73e8;
}

button {
    display: block;
    width: 100%;
    padding: 12px;
    background-color: #1a73e8;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1.1em;
    transition: background-color 0.3s ease;
    margin-top: 20px;
}

button:hover {
    background-color: #125abc; /* 少し濃い青 */
}

.result-area {
    margin-top: 30px;
    padding: 20px;
    background-color: #f0f8ff; /* 薄い水色系 */
    border: 1px solid #b3d4fc;
    border-radius: 5px;
}

.result-area h2 {
    color: #1a73e8;
    margin-top: 0;
    border-bottom: 2px solid #1a73e8;
    padding-bottom: 5px;
}

.result-area p, .result-area ul {
    margin-bottom: 10px;
}

.result-area ul {
    padding-left: 20px;
}

.result-area strong {
    font-weight: bold;
}

.important-notes {
    background-color: #fff8e1; /* 黄色系の注意喚起色 */
    border: 1px solid #ffecb3;
    padding: 15px;
    border-radius: 4px;
    margin-top: 20px;
    font-size: 0.95em;
}

.important-notes strong.red-text {
    color: #c0392b; /* 赤系の強調色 */
}

a {
    color: #1a73e8;
    text-decoration: none;
    font-weight: bold;
}

a:hover {
    text-decoration: underline;
}

.button-link { /* 結果表示内のボタン風リンク */
    display: inline-block;
    padding: 10px 15px;
    background-color: #1a73e8;
    color: white;
    border-radius: 5px;
    text-align: center;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.button-link:hover {
    background-color: #125abc;
    text-decoration: none;
}