/* 全局样式 */
body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
}

/* 容器样式 */
div {
    max-width: 800px;
    margin: 20px auto;
    padding: 15px;
    background: #ffffff;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

/* 标题样式 */
h2 {
    font-size: 1.8em;
    margin-bottom: 10px;
    color: #555;
    text-align: center;
}

/* 列表样式 */
ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

li {
    padding: 0px 20px;
    transition: background-color 0.2s ease-in-out;
}

li:last-child {
    border-bottom: none;
}

/* 鼠标悬停效果 */
li:hover {
    background-color: #f3f4f5;
}

/* 链接样式 */
a {
    text-decoration: none;
    color: #007bff;
    font-weight: bold;
    transition: color 0.2s ease-in-out;
}

a:hover {
    color: #0056b3;
}

/* 标签样式 */
span {
    display: inline-block;
    margin-left: 10px;
    padding: 2px 6px;
    font-size: 0.8em;
    color: #1a1a1a;
    background-color: #f3f4f5;
    border-radius: 4px;
    vertical-align: middle;
}

span.popular {
    background-color: #28a745;
}

span.new {
    background-color: #dc3545;
}