/* 重置样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Microsoft YaHei", Arial, sans-serif;
  font-size: 14px;
  color: #333;
  background-color: #f5f5f5;
  line-height: 1.5;
}

/* 基础样式 */
a {
  text-decoration: none;
  color: #333;
}

img {
  border: 0;
  vertical-align: middle;
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style: none;
}

/* 常用工具类 */
.clearfix:after {
  content: "";
  display: block;
  clear: both;
}

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

/* 响应式设计 */
@media (max-width: 768px) {
  body {
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 10px;
  }
}