* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  background: #f5f7fa;
  color: #1f2329;
}
header {
  background: #fff;
  border-bottom: 1px solid #e5e6eb;
  padding: 12px 20px;
  position: sticky;
  top: 0;
  z-index: 10;
}
header h1 { margin: 0 0 10px; font-size: 18px; font-weight: 600; }
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.ranges button {
  border: 1px solid #c9cdd4;
  background: #fff;
  padding: 5px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  color: #1f2329;
}
.ranges button:hover { border-color: #1e6fff; }
.ranges button.active { background: #1e6fff; border-color: #1e6fff; color: #fff; }
.filter-wrap { position: relative; }
#btn-filter {
  border: 1px solid #c9cdd4;
  background: #fff;
  padding: 5px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  color: #1f2329;
}
#btn-filter:hover { border-color: #1e6fff; color: #1e6fff; }
.filter-popup {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 20;
  background: #fff;
  border: 1px solid #e5e6eb;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,.12);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  color: #1f2329;
  min-width: 160px;
}
.filter-popup label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}
.filter-popup input { accent-color: #1e6fff; cursor: pointer; }
.filter-popup hr { border: none; border-top: 1px solid #e5e6eb; margin: 4px 0; }
.custom { display: flex; gap: 6px; align-items: center; font-size: 13px; }
.custom input {
  padding: 4px 6px;
  border: 1px solid #c9cdd4;
  border-radius: 4px;
  font-size: 13px;
}
.custom button {
  border: 1px solid #c9cdd4;
  background: #fff;
  padding: 5px 14px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
}
.custom button:hover { border-color: #1e6fff; color: #1e6fff; }
.status { margin-left: auto; font-size: 13px; color: #4e5969; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.badge { padding: 2px 10px; border-radius: 10px; font-size: 12px; }
.badge.ok { background: #e8f7ef; color: #0b8a3c; }
.badge.warn { background: #fff3e0; color: #b25e00; }
main#charts { padding: 20px; }
.chart-group { margin-bottom: 22px; }
.group-title {
  font-size: 15px;
  font-weight: 600;
  color: #1f2329;
  margin: 0 0 10px;
  padding-left: 10px;
  border-left: 3px solid #1e6fff;
}
.chart-group .cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(405px, 1fr));
  gap: 16px;
}
.card {
  background: #fff;
  border: 1px solid #e5e6eb;
  border-radius: 8px;
  padding: 12px 14px;
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
.card h3 { margin: 0 0 6px; font-size: 14px; font-weight: 600; }
.card .unit { font-weight: 400; color: #86909c; font-size: 12px; margin-left: 4px; }
.chart { width: 100%; height: 240px; }
.empty { padding: 40px; text-align: center; color: #86909c; font-size: 14px; }
.hidden { display: none; }
footer { padding: 12px 20px 24px; color: #86909c; font-size: 12px; }

/* ---- 手机端适配：图缩小、单列、工具条紧凑 ---- */
@media (max-width: 768px) {
  header { padding: 10px 12px; }
  header h1 { font-size: 16px; margin-bottom: 8px; }
  .toolbar { gap: 8px; }
  .ranges button { padding: 4px 10px; font-size: 12px; }
  #btn-filter { padding: 4px 10px; font-size: 12px; }
  .filter-popup { min-width: 140px; font-size: 12px; }
  .custom { flex-wrap: wrap; }
  .custom input { flex: 1; min-width: 120px; font-size: 12px; }
  .status { margin-left: 0; width: 100%; font-size: 12px; gap: 8px; }
  main#charts { padding: 12px; }
  .chart-group .cards {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .card { padding: 10px 10px; }
  .card h3 { font-size: 13px; }
  /* 图表缩小：一屏可多看几张 */
  .chart { height: 190px; }
  .empty { padding: 24px; font-size: 13px; }
  footer { padding: 10px 12px 16px; font-size: 11px; }
}