/* 全局字体 */
body {
    font-family: "Microsoft YaHei", Consolas;
    background: #f5f7fa;
}

/* 主内容卡片 */
#mainContent {
    background: #ffffff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

/* 标题 */
h1 {
    border-left: 5px solid #007acc;
    padding-left: 10px;
    color: #2c3e50;
}

h2 {
    color: #34495e;
    margin-top: 20px;
}

/* 代码块 */
pre {
    background: #1e1e1e;
    color: #dcdcdc;
    border-radius: 8px;
    padding: 10px;
}

/* 链接 */
a {
    color: #007acc;
}

/* 分割线 */
hr {
    border: none;
    height: 1px;
    background: #ddd;
    margin: 20px 0;
}