/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
/* 基础样式 */
body {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: #333;
  background-color: #fff;
}
/* 文本样式 */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 0.5em;
}
h1 {
  font-size: 2em;
}
h2 {
  font-size: 1.75em;
}
h3 {
  font-size: 1.5em;
}
h4 {
  font-size: 1.25em;
}
h5 {
  font-size: 1.1em;
}
h6 {
  font-size: 1em;
}
p {
  margin-bottom: 1em;
}
a {
  color: #165dff;
  text-decoration: none;
  transition: color 0.2s;
}
/* 列表样式 */
ul,
ol {
  margin-left: 1.5em;
  margin-bottom: 1em;
}
ul {
  list-style-type: disc;
}
ol {
  list-style-type: decimal;
}
li {
  list-style: none;
}
a {
  color: #677489;
}
a:hover {
  color: #677489;
}
/* 表单样式 */
input,
button,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  padding: 0.5em 0.75em;
  border: 1px solid #ddd;
  border-radius: 4px;
}
input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: #165dff;
  box-shadow: 0 0 0 2px rgba(22, 93, 255, 0.2);
}
button {
  background-color: #165dff;
  color: white;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s;
}
/* 通用工具类 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}
.hidden {
  display: none !important;
}
.text-center {
  text-align: center;
}
.mt-1 {
  margin-top: 0.25em;
}
.mt-2 {
  margin-top: 0.5em;
}
.mt-3 {
  margin-top: 1em;
}
.mb-1 {
  margin-bottom: 0.25em;
}
.mb-2 {
  margin-bottom: 0.5em;
}
.mb-3 {
  margin-bottom: 1em;
}