:root {
  --accent: #0d6efd;
  --bg: #f5f6fa;
  --card: #fff;
  --border: #e3e6ee;
  --text: #1f2430;
  --muted: #6b7280;
  --warn: #b45309;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.5;
}
header { background: linear-gradient(135deg, #0d6efd, #4f46e5); color: #fff; padding: 24px 20px; }
header h1 { margin: 0 0 6px; font-size: 24px; }
header .subtitle { margin: 0; font-size: 13px; opacity: .92; }
.toolbar {
  background: var(--card); border-bottom: 1px solid var(--border);
  padding: 14px 20px; display: flex; flex-wrap: wrap; gap: 14px; align-items: center;
  position: sticky; top: 0; z-index: 10;
}
.filters { display: flex; flex-wrap: wrap; gap: 14px; }
.filters[hidden], thead tr[hidden] { display: none; }
.filters label { display: flex; flex-direction: column; font-size: 12px; color: var(--muted); gap: 4px; }
.filters select, .filters input {
  padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; background: #fff;
}
.view-toggle { margin-left: auto; display: flex; gap: 6px; align-items: center; }
.view-toggle button {
  border: 1px solid var(--border); background: #fff; padding: 7px 14px; border-radius: 6px;
  cursor: pointer; font-size: 13px;
}
.view-toggle button.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.view-toggle .count { font-size: 13px; color: var(--muted); }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: var(--card); font-size: 13px; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; }
th { background: #fafbfc; color: var(--muted); font-weight: 600; white-space: nowrap; }
th[data-sort] { cursor: pointer; user-select: none; }
th[data-sort]:hover { background: #eef2ff; color: var(--accent); }
th.sorted { color: var(--accent); }
th .sort-badge { font-size: 10px; color: var(--accent); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:hover { background: #f7f9ff; }
.src-联通 { color: #e60027; }
.src-移动 { color: #0066b3; }
.src-电信 { color: #e8730c; }
.src-广电 { color: #8b5cf6; }
.tag {
  display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 11px; margin-right: 4px;
}
.tag.contract { background: #fef3c7; color: var(--warn); }
.tag.restricted { background: #fce7f3; color: #be185d; }
.tag.pack { background: #e0f2fe; color: #0369a1; }
.tag.bj { background: #ede9fe; color: #6d28d9; }
.sort-panel {
  background: var(--card); border-bottom: 1px solid var(--border); padding: 10px 20px;
  display: flex; flex-direction: column; gap: 8px; font-size: 13px;
}
.sort-panel-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sort-panel-head .sort-hint { color: var(--muted); font-size: 12px; flex: 1; }
.sort-panel-head button, .sort-key-row button {
  border: 1px solid var(--border); background: #fff; padding: 5px 10px; border-radius: 6px;
  cursor: pointer; font-size: 12px;
}
.sort-panel-head button { background: var(--accent); color: #fff; border-color: var(--accent); }
.sort-panel-head button.ghost { background: #fff; color: var(--text); border-color: var(--border); }
.sort-keys { display: flex; flex-direction: column; gap: 6px; }
.sort-key-row { display: flex; align-items: center; gap: 8px; }
.sort-key-row .sort-idx {
  width: 20px; height: 20px; border-radius: 50%; background: var(--accent); color: #fff;
  display: inline-flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700;
}
.sort-key-row select {
  padding: 5px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 12px; background: #fff;
}
.sort-key-row .sort-del { background: #fee2e2; color: #b91c1c; border-color: #fecaca; }
.sort-empty { color: var(--muted); font-size: 12px; }
.legend { padding: 12px 20px; font-size: 12px; color: var(--muted); }
footer { padding: 16px 20px; font-size: 12px; color: var(--muted); border-top: 1px solid var(--border); }
.empty { text-align: center; color: var(--muted); padding: 40px; }
@media (max-width: 720px) {
  th:nth-child(6), td:nth-child(6), th:nth-child(7), td:nth-child(7) { display: none; }
}