html {
	background-color: #f4f4f4;
  }
  
  body {
	font-family: 'Georgia', serif;
	color: #222;
	background-color: #ffffff;
	margin: 40px auto;
	padding: 40px 60px;
	max-width: 960px;
	border-radius: 12px;
	box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  }
  
  /* 顶部标题 */
  div#toptitle {
	padding-bottom: 0.2em;
	margin-bottom: 1.5em;
	border-bottom: 3px solid #aaa;
  }
  
  div#toptitle h1 {
	font-size: 200%;
	color: #34495e;
	margin: 0;
  }
  
  /* 链接优化 */
  a, a > tt {
	color: #1a73e8;
	text-decoration: none;
  }
  
  a:hover {
	text-decoration: underline;
  }
  
  /* 小图圆角头像 */
  .imgtable img {
	border-radius: 50%;
	border: 2px solid #ccc;
	padding: 2px;
  }
  
  /* 页脚 */
  div#footer {
	font-size: small;
	border-top: 1px solid #ccc;
	margin-top: 3em;
	color: #888;
  }
  
  /* 按钮风格（比如中英文切换） */
  a.button {
	display: inline-block;
	background: white;
	color: black;
	padding: 6px 12px;
	margin: 8px 4px 0 0;
	border-radius: 6px;
	font-size: 90%;
  }
  
  a.button:hover {
	background: #c5ca2a;
	text-decoration: none;
  }
  
  /* 调整段落和标题风格 */
  h2 {
	color: #2c3e50;
	font-size: 140%;
	border-bottom: 1px solid #ccc;
	margin-top: 2em;
  }
  
  p {
	line-height: 1.6;
	font-size: 1.02em;
	margin-bottom: 1em;
  }