@charset "utf-8";
/* CSS Document */

/* 全局样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 全局基础样式 */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Microsoft YaHei", Roboto, sans-serif;
  color: #333333;
  background-color: #FFFFFF;
  line-height: 1.6;
  font-size: 16px;
}

a {
  text-decoration: none;
  color: #4A90E2;
  transition: color 0.2s ease;
}

a:hover {
  color: #357ABD;
}

/* 通用按钮样式 */
.btn {
  display: inline-block;
  padding: 8px 16px;
  background-color: #4A90E2;
  color: #FFFFFF;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: background-color 0.2s ease;
}

.btn:hover {
  background-color: #357ABD;
  color: #FFFFFF;
}

.btn-outline {
  background-color: transparent;
  border: 1px solid #4A90E2;
  color: #4A90E2;
}

.btn-outline:hover {
  background-color: #f0f7ff;
}

/* 通用容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

/* 导航栏通用样式 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: #FFFFFF;
  border-bottom: 1px solid #EEEEEE;
  padding: 16px 0;
  z-index: 100;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 20px;
  font-weight: bold;
  color: #333333;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-item {
  font-size: 14px;
  color: #333333;
}

.nav-item:hover {
  color: #4A90E2;
}

/* 搜索框通用样式 */
.search-box {
  position: relative;
  width: 200px;
}

.search-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #EEEEEE;
  border-radius: 4px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease;
}

.search-input:focus {
  border-color: #4A90E2;
}

/* 汉堡菜单（移动端） */
.hamburger {
  display: none;
  font-size: 20px;
  cursor: pointer;
}

/* 页脚通用样式 */
.footer {
  margin-top: 48px;
  padding: 24px 0;
  border-top: 1px solid #EEEEEE;
  text-align: center;
  font-size: 12px;
  color: #888888;
}

/* 响应式断点：移动端（≤767px） */
@media (max-width: 767px) {
  .nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid #EEEEEE;
    gap: 16px;
  }

  .nav.show {
    display: flex;
  }

  .hamburger {
    display: block;
  }

  .search-box {
    width: 100%;
    margin-top: 16px;
  }
}

/* 响应式断点：平板（768px-1200px） */
@media (min-width: 768px) and (max-width: 1200px) {
  .container {
    max-width: 720px;
  }
}