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

:root {
  --um-blue: #1677ff;
  --um-blue-dark: #0958d9;
  --um-blue-light: #e6f4ff;
  --um-bg: #f0f2f5;
  --um-white: #ffffff;
  --um-border: #e8e8e8;
  --um-text: #333;
  --um-text-secondary: #666;
  --um-text-muted: #999;
  --um-green: #52c41a;
  --um-red: #ff4d4f;
  --um-sidebar: #001529;
  --um-shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 1px 6px rgba(0, 0, 0, 0.04);
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--um-bg);
  color: var(--um-text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--um-blue); text-decoration: none; }
a:hover { color: var(--um-blue-dark); }

.um-topbar {
  background: linear-gradient(90deg, #001529 0%, #002140 100%);
  color: #fff;
  height: 48px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.um-topbar-inner {
  max-width: 1400px;
  margin: 0 auto;
  height: 100%;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.um-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.um-logo {
  width: 28px;
  height: 28px;
  background: var(--um-blue);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
}

.um-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.um-brand-text strong {
  font-size: 14px;
  font-weight: 600;
}

.um-brand-text span {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.65);
}

.um-topbar-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
}

.um-siteid {
  color: rgba(255, 255, 255, 0.75);
}

.um-source {
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.85);
}

.um-source.server {
  background: rgba(82, 196, 26, 0.2);
  color: #b7eb8f;
}

.um-back {
  color: #91caff !important;
  font-size: 12px;
}

.um-layout {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  min-height: calc(100vh - 48px);
}

.um-sidebar {
  width: 180px;
  flex-shrink: 0;
  background: var(--um-sidebar);
  padding: 12px 0;
}

.um-nav-item {
  display: block;
  padding: 10px 20px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 13px;
  border-left: 3px solid transparent;
  transition: all 0.2s;
}

.um-nav-item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.um-nav-item.active {
  color: #fff;
  background: var(--um-blue);
  border-left-color: #69b1ff;
}

.um-main {
  flex: 1;
  min-width: 0;
  padding: 16px;
}

.um-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  background: var(--um-white);
  padding: 12px 16px;
  border-radius: 8px;
  box-shadow: var(--um-shadow);
}

.um-date-tabs {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.um-tab {
  padding: 6px 14px;
  border: 1px solid var(--um-border);
  background: var(--um-white);
  border-radius: 4px;
  font-size: 13px;
  color: var(--um-text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}

.um-tab:hover {
  color: var(--um-blue);
  border-color: var(--um-blue);
}

.um-tab.active {
  background: var(--um-blue);
  border-color: var(--um-blue);
  color: #fff;
}

.um-toolbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.um-update {
  font-size: 12px;
  color: var(--um-text-muted);
}

.um-btn {
  padding: 6px 16px;
  background: var(--um-blue);
  border: none;
  border-radius: 4px;
  color: #fff;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s;
}

.um-btn:hover { background: var(--um-blue-dark); }

.um-kpi {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  .um-kpi { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1100px) {
  .um-kpi { grid-template-columns: repeat(6, 1fr); }
}

.um-kpi-card {
  background: var(--um-white);
  border-radius: 8px;
  padding: 16px;
  box-shadow: var(--um-shadow);
  border-top: 3px solid var(--um-blue);
}

.um-kpi-highlight {
  border-top-color: #faad14;
}

.um-kpi-label {
  font-size: 12px;
  color: var(--um-text-muted);
  margin-bottom: 8px;
}

.um-kpi-value {
  font-size: 28px;
  font-weight: 600;
  color: var(--um-text);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.um-kpi-ip {
  font-size: 15px;
  font-weight: 600;
  word-break: break-all;
}

.um-kpi-sub {
  font-size: 11px;
  color: var(--um-text-muted);
  margin-top: 6px;
}

.um-kpi-sub .up { color: var(--um-red); }
.um-kpi-sub .down { color: var(--um-green); }
.um-kpi-sub .flat { color: var(--um-text-muted); }

.um-panel {
  background: var(--um-white);
  border-radius: 8px;
  box-shadow: var(--um-shadow);
  margin-bottom: 16px;
  overflow: hidden;
}

.um-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--um-border);
  flex-wrap: wrap;
  gap: 8px;
}

.um-panel-head h2 {
  font-size: 15px;
  font-weight: 600;
  color: var(--um-text);
}

.um-panel-tip {
  font-size: 12px;
  color: var(--um-text-muted);
}

.um-legend {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--um-text-secondary);
}

.leg {
  display: flex;
  align-items: center;
  gap: 6px;
}

.leg i {
  display: inline-block;
  width: 12px;
  height: 3px;
  border-radius: 2px;
}

.leg-pv i { background: var(--um-blue); }
.leg-uv i { background: #52c41a; }

.um-chart-wrap {
  position: relative;
  padding: 16px;
  min-height: 260px;
}

.um-chart-wrap canvas {
  width: 100% !important;
  height: 260px !important;
}

.um-chart-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--um-text-muted);
  font-size: 14px;
}

.um-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 900px) {
  .um-grid-2 { grid-template-columns: 1fr 1fr; }
}

.um-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.um-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.um-table th {
  text-align: left;
  padding: 10px 16px;
  background: #fafafa;
  color: var(--um-text-secondary);
  font-weight: 600;
  border-bottom: 1px solid var(--um-border);
  white-space: nowrap;
}

.um-table td {
  padding: 10px 16px;
  border-bottom: 1px solid #f5f5f5;
  color: var(--um-text);
}

.um-table tbody tr:hover {
  background: var(--um-blue-light);
}

.um-table .empty {
  text-align: center;
  color: var(--um-text-muted);
  padding: 32px !important;
}

.um-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

.um-badge-pv {
  background: #e6f4ff;
  color: var(--um-blue);
}

.um-badge-click {
  background: #f6ffed;
  color: #389e0d;
}

.um-bar-cell {
  display: flex;
  align-items: center;
  gap: 8px;
}

.um-bar {
  flex: 1;
  height: 6px;
  background: #f0f0f0;
  border-radius: 3px;
  overflow: hidden;
  max-width: 80px;
}

.um-bar i {
  display: block;
  height: 100%;
  background: var(--um-blue);
  border-radius: 3px;
}

.um-footer {
  text-align: center;
  padding: 16px 0 8px;
  font-size: 12px;
  color: var(--um-text-muted);
}

@media (max-width: 767px) {
  .um-layout {
    flex-direction: column;
  }

  .um-sidebar {
    width: 100%;
    display: flex;
    overflow-x: auto;
    padding: 0;
  }

  .um-nav {
    display: flex;
    width: 100%;
  }

  .um-nav-item {
    flex: 1;
    text-align: center;
    border-left: none;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
    padding: 10px 12px;
  }

  .um-nav-item.active {
    border-left: none;
    border-bottom-color: #69b1ff;
  }

  .um-topbar-meta .um-siteid {
    display: none;
  }

  .um-kpi-value {
    font-size: 22px;
  }
}