/* 全局設計 */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.title-underline {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    padding-bottom: 5px;
    border-bottom: 4px solid #0e01f7; /* indigo-600 */
    display: inline-block;
}