/* 基本样式 */
body {
    font-family: Arial, sans-serif;
    background-color: #f7f7f7;
    margin: 0;
    padding: 0;
}

header {
    background-color: #ff6f61;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
}

nav ul {
    list-style: none;
}

nav ul li {
    display: inline;
    margin-right: 20px;
}

nav ul li a {
    text-decoration: none;
    color: #fff;
    font-weight: bold;
}

section {
    padding: 2rem;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    margin: 20px;
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 0.5rem 0;
}

/* 首页样式 */
#home {
    background-color: #ffdd73;
}

/* 项目样式 */
#programs ul {
    list-style: none;
    display: flex;
    justify-content: space-between;
}

#programs li {
    flex-basis: 45%;
    background-color: #ffdd73;
    padding: 20px;
    margin: 10px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

/* 链接样式 */
a {
    color: #0073e6;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}