body {
    font-family: "微軟正黑體", Arial, sans-serif;
    background-color: #f0f8ff;
    color: #333333;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

main {
    max-width: 800px;
    margin: 20px auto;
    padding: 30px;
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

header, footer {
    background-color: #2c3e50;
    color: #ffffff;
    text-align: center;
    padding: 20px 0;
}

.nav-menu {
    background-color: #34495e;
    padding: 10px 0;
    text-align: center;
}

.nav-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    display: inline-block;
    margin: 0 20px;
}

.profile-img {
    border-radius: 50%;
    border: 4px solid #34495e;
    display: block;
    margin: 10px auto;
}

.highlight-text {
    color: #e74c3c;
    font-weight: bold;
    font-size: 1.1em;
}

#intro {
    border-bottom: 2px dashed #bdc3c7;
    margin-bottom: 20px;
    padding-bottom: 15px;
}

#projects ul {
    background-color: #f9f9f9;
    padding: 20px;
    border-left: 5px solid #3498db;
}

a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #f1c40f;
    text-decoration: underline;
}

h2::before {
    content: "📌 ";
    font-size: 1.2em;
}

dt::first-letter {
    font-size: 1.2em;
    color: #2980b9;
    font-weight: bold;
}