* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
  background: #f3f4f6;
}

.web-app {
  display: flex;
  min-height: 100vh;
}

/* 业务布局外壳：顶部导航 + 主体（侧边栏 + 内容区） */
.app-shell {
  display: grid;
  grid-template-rows: 56px 1fr;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.app-body {
  display: grid;
  grid-template-columns: 208px 1fr;
  min-height: 0;
  overflow: hidden;
}

.app-body.no-sidebar {
  grid-template-columns: 0 1fr;
}

.app-body.no-sidebar > .sidebar {
  display: none;
}

.layout-app .content {
  flex: 1;
  min-width: 0;
  overflow-y: auto;
  background: #f2f5fa;
  padding: 18px 24px 32px;
}

/* blank 布局（登录页）：避免作为 flex item 收缩到内容宽度，
   否则页面只占视口一部分、右侧露出背景空白 */
.layout-blank {
  display: block;
  width: 100%;
}

.demo-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
}

.demo-table th,
.demo-table td {
  border: 1px solid #e5e7eb;
  padding: 10px 12px;
  text-align: left;
}

.demo-table th {
  background: #f9fafb;
}

.demo-table .ok {
  color: #15803d;
}