body {
    font-family: "Microsoft YaHei", sans-serif;
    margin: 0;
    padding: 0;
    background-color: #e9f4fd;
    color: #5a5a5a;
    line-height: 1.6;
}
#container {
    width: 900px;
    margin: 0 auto;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
}
#header {
    background-color: #6ec0e0;
    padding: 20px;
    text-align: center;
    border-bottom: 3px solid #b3d9ed;

}
#nav {
    float: left;
    width: 200px;
    padding: 0; /* 移除内边距 */
    background-color: #80deea; /* 更新背景颜色 */
    min-height: 500px;
    box-shadow: inset -3px 0 8px rgba(0,0,0,0.05); /* 添加内阴影效果 */
}

#nav h3 {
    background-color: #6ec0e0; /* 导航标题背景颜色 */
    color: #fff; /* 导航标题文本颜色 */
    padding: 15px; /* 添加内边距 */
    text-align: center;
    margin: 0; /* 移除外边距 */
    border-bottom: 1px solid #b3d9ed; /* 添加底部边框 */
}

#nav ul {
    list-style-type: none; /* 移除列表样式 */
    padding: 0; /* 移除内边距 */
    margin: 0; /* 移除外边距 */
}

#nav ul li {
    background-color: #80deea; /* 列表项背景颜色 */
    border-bottom: 1px solid #80deea; /* 列表项底部边框 */
    padding: 10px; /* 添加内边距 */
    text-align: center; /* 文本居中 */
}

#nav ul li a {
    color: #5a5a5a; /* 链接文本颜色 */
    text-decoration: none; /* 移除下划线 */
    display: block; /* 使链接块级显示 */
}

#nav ul li a:hover {
    background-color: #4d9ebd; /* 链接悬停背景颜色 */
    color: #fff; /* 链接悬停文本颜色 */
	padding: 10px; /* 添加内边距 */
}
#content {
    float: left;
    width: 620px;
    padding: 20px;
}
#footer {
    clear: both;
    text-align: center;
    padding: 15px;
    background-color: #6ec0e0;
    color: #ffffff;
    font-size: 14px;
}
h1 {
    color: #fff;
    margin: 10px 0;
}
h2 {
    color: #ff69b4;
    border-bottom: 2px dotted #b3d9ed;
    padding-bottom: 5px;
}
a {
    color: #ff69b4;
    text-decoration: none;
}
a:hover {
    color: #ff8cbf;
}
.profile {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}
.profile-text {
    margin-left: 20px;
}
#avatar {
    width: 120px;
    height: 120px;
    border-radius: 10%;
    border: 5px solid white;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}
.photo-gallery img {
    width: 180px;
	height:180px;
    margin: 5px;
    border: 3px solid #b3d9ed;
}
.video-container {
    margin: 20px 0;
}
.timetable {
    width: 100%;
    border-collapse: collapse;
}
.timetable th, .timetable td {
    border: 1px solid #b3d9ed;
    padding: 8px;
    text-align: center;
}
.timetable th {
    background-color: #b3d9ed;
}