:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1f2329;
  --text-2: #646a73;
  --text-3: #8f959e;
  --border: #e5e6eb;
  --primary: #2f6bff;
  --primary-soft: #eef3ff;
  --up: #d54941;
  --down: #2ba471;
  --warn: #d9822b;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(31, 35, 41, 0.06), 0 4px 12px rgba(31, 35, 41, 0.04);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }
.muted { color: var(--text-3); }

/* ---------------- 顶栏 ---------------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  flex-wrap: wrap;
  gap: 12px;
}
.topbar-left h1 {
  margin: 0;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.2px;
}
.subtitle {
  font-size: 12px;
  color: var(--text-3);
  margin-left: 8px;
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
}
.date-box { text-align: right; line-height: 1.3; }
.date-box .label {
  display: block;
  font-size: 11px;
  color: var(--text-3);
}
.date-box strong { font-size: 14px; font-weight: 600; }

.btn {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  padding: 7px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: all 0.15s;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-ghost { background: transparent; }

/* ---------------- 告警条 ---------------- */
.alert {
  margin: 12px 24px 0;
  padding: 11px 16px;
  border-radius: 8px;
  font-size: 13px;
  background: #fff7e8;
  border: 1px solid #ffd591;
  color: #874d00;
}
.alert.error { background: #fff1f0; border-color: #ffa39e; color: #a8071a; }
.alert.info { background: var(--primary-soft); border-color: #adc6ff; color: #10239e; }

/* ---------------- Tab ---------------- */
.tabs {
  display: flex;
  gap: 4px;
  padding: 14px 24px 0;
  overflow-x: auto;
}
.tab {
  padding: 9px 18px;
  border-radius: 8px 8px 0 0;
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font);
  color: var(--text-2);
  white-space: nowrap;
  transition: all 0.15s;
}
.tab:hover { color: var(--text); }
.tab.active {
  background: var(--card);
  border-color: var(--border);
  color: var(--primary);
  font-weight: 600;
}
.tab .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  margin-left: 6px;
  background: var(--down);
  vertical-align: middle;
}
.tab .dot.bad { background: var(--up); }

/* ---------------- 面板 ---------------- */
main { padding: 16px 24px 32px; }

.panel-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.panel-head h2 { margin: 0; font-size: 17px; font-weight: 600; }
.panel-head .scope-tag {
  font-size: 12px;
  padding: 2px 9px;
  border-radius: 20px;
  background: var(--primary-soft);
  color: var(--primary);
}

/* KPI 卡片 */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.kpi {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow);
}
.kpi .k-label {
  font-size: 12px;
  color: var(--text-3);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.kpi .k-value {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.3px;
  line-height: 1.2;
}
.kpi .k-change {
  font-size: 12px;
  margin-top: 5px;
  display: flex;
  align-items: center;
  gap: 3px;
}
.kpi .k-change .arrow { font-size: 10px; }
.up { color: var(--up); }
.down { color: var(--down); }
.flat { color: var(--text-3); }

/* 卡片网格布局 */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  min-width: 0;
}
.card h3 {
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card h3 .sub { font-size: 11px; color: var(--text-3); font-weight: 400; }

.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

@media (max-width: 1100px) {
  .col-4, .col-5, .col-6, .col-7, .col-8 { grid-column: span 12; }
}

/* 环形图 */
.donut-wrap {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.donut-legend { flex: 1; min-width: 140px; }
.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  font-size: 13px;
}
.legend-dot {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  flex-shrink: 0;
}
.legend-name { flex: 1; color: var(--text-2); }
.legend-val { font-weight: 600; font-variant-numeric: tabular-nums; }
.legend-pct { color: var(--text-3); width: 48px; text-align: right; font-variant-numeric: tabular-nums; }

/* 条形榜 */
.bar-list { display: flex; flex-direction: column; gap: 9px; }
.bar-item { font-size: 13px; }
.bar-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 4px;
  gap: 10px;
}
.bar-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-2);
}
.bar-title .rank {
  display: inline-block;
  width: 18px;
  height: 18px;
  line-height: 18px;
  text-align: center;
  border-radius: 4px;
  background: var(--bg);
  color: var(--text-3);
  font-size: 11px;
  margin-right: 6px;
  font-weight: 600;
}
.bar-title .rank.top { background: var(--primary); color: #fff; }
.bar-value { font-weight: 600; font-variant-numeric: tabular-nums; flex-shrink: 0; }
.bar-track {
  height: 6px;
  background: var(--bg);
  border-radius: 3px;
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #5b8dff, #2f6bff);
  border-radius: 3px;
  transition: width 0.4s ease;
}

/* 表格 */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  padding: 9px 10px;
  text-align: right;
  border-bottom: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
th {
  color: var(--text-3);
  font-weight: 500;
  font-size: 12px;
  background: #fafbfc;
}
th:first-child, td:first-child { text-align: left; }
tbody tr:hover { background: #fafbfc; }
td.name-cell {
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.table-scroll { overflow-x: auto; margin: -4px; padding: 4px; }

/* 趋势图 */
.trend-legend {
  display: flex;
  gap: 14px;
  font-size: 12px;
  color: var(--text-2);
  flex-wrap: wrap;
}
.trend-legend .li { display: flex; align-items: center; gap: 5px; }
.trend-legend .swatch { width: 14px; height: 3px; border-radius: 2px; }
.chart-svg { width: 100%; height: auto; display: block; overflow: visible; }

/* 环比对比 */
.compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}
.compare-item {
  text-align: center;
  padding: 10px 6px;
  background: #fafbfc;
  border-radius: 8px;
}
.compare-item .c-label { font-size: 12px; color: var(--text-3); margin-bottom: 5px; }
.compare-item .c-cur { font-size: 16px; font-weight: 600; font-variant-numeric: tabular-nums; }
.compare-item .c-prev { font-size: 11px; color: var(--text-3); margin-top: 2px; font-variant-numeric: tabular-nums; }
.compare-item .c-chg { font-size: 12px; margin-top: 3px; font-weight: 500; }

/* 空状态 */
.empty {
  text-align: center;
  padding: 44px 20px;
  color: var(--text-3);
}
.empty h3 { font-size: 15px; margin: 0 0 8px; color: var(--text-2); }
.empty p { margin: 4px 0; font-size: 13px; }
.empty code {
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
}

.footer {
  padding: 16px 24px 28px;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-3);
  flex-wrap: wrap;
  gap: 10px;
}

.loading { text-align: center; padding: 60px; color: var(--text-3); }

/* 提示气泡 */
.tip {
  cursor: help;
  color: var(--text-3);
  border-bottom: 1px dotted var(--text-3);
}