/* ========== 基础重置与变量 ========== */
:root {
  --primary: #e60023;
  --text: #333;
  --text-secondary: #999;
  --bg: #fafafa;
  --bg-white: #fff;
  --border: #efefef;
  --shadow: 0 1px 2px rgba(0,0,0,0.1);
  --radius: 8px;
  --header-height: 60px;
  --sidebar-width: 240px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

input {
  font-family: inherit;
  border: none;
  outline: none;
}

/* ========== 滚动条样式 ========== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #ccc;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #aaa;
}