:root {
  --bg: #f5f6f8;
  --card: #fff;
  --border: #e3e6eb;
  --primary: #2563eb;
  --primary-d: #1d4ed8;
  --muted: #6b7280;
  --ok: #16a34a;
  --warn: #d97706;
  --err: #dc2626;
  --th: #f0f2f5;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: #1f2937;
  font-size: 14px;
}
header.top {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}
header.top h1 { font-size: 16px; margin: 0; }
header.top .sub { color: var(--muted); font-size: 12px; }
.container { max-width: 1280px; margin: 0 auto; padding: 16px 20px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
}
.tabs { display: flex; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid var(--border); }
.tabs button {
  background: none; border: none; padding: 8px 16px; cursor: pointer;
  border-bottom: 2px solid transparent; font-size: 14px; color: var(--muted);
}
.tabs button.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
table.grid { border-collapse: collapse; width: 100%; font-size: 13px; }
table.grid th, table.grid td { border: 1px solid var(--border); padding: 4px 8px; white-space: nowrap; }
table.grid th { background: var(--th); text-align: center; position: sticky; top: 0; }
table.grid td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.grid tr.grand td { font-weight: 700; background: #eef2ff; }
table.grid input.cell {
  width: 100%; border: none; padding: 4px 6px; font: inherit; text-align: right;
  background: transparent; font-variant-numeric: tabular-nums;
}
table.grid input.cell:focus { outline: 2px solid var(--primary); background: #fff; }
.btn {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 6px 14px; border: 1px solid var(--border); border-radius: 6px;
  background: #fff; cursor: pointer; font-size: 13px;
}
.btn.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn.primary:hover { background: var(--primary-d); }
.btn.sm { padding: 3px 8px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 8px; }
.field label { font-size: 12px; color: var(--muted); }
input.fld, select.fld {
  padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; font: inherit;
  width: 160px;
}
input.fld.num { text-align: right; font-variant-numeric: tabular-nums; }
.computed { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 8px 0; }
.computed .c { background: #f8fafc; border: 1px solid var(--border); border-radius: 6px; padding: 8px; }
.computed .c .k { font-size: 11px; color: var(--muted); }
.computed .c .v { font-size: 15px; font-weight: 600; font-variant-numeric: tabular-nums; }
.badge { font-size: 11px; padding: 1px 6px; border-radius: 4px; background: #e5e7eb; }
.badge.ok { background: #dcfce7; color: #166534; }
.badge.off { background: #fee2e2; color: #991b1b; }
.msg { padding: 8px 12px; border-radius: 6px; margin: 8px 0; font-size: 13px; }
.msg.ok { background: #dcfce7; color: #166534; }
.msg.err { background: #fee2e2; color: #991b1b; }
.msg.info { background: #dbeafe; color: #1e40af; }
.muted { color: var(--muted); }
.right { text-align: right; }
.drop {
  border: 2px dashed var(--border); border-radius: 8px; padding: 24px;
  text-align: center; color: var(--muted); cursor: pointer;
}
.drop.over { border-color: var(--primary); background: #eff6ff; }
.scroll { overflow: auto; max-height: 70vh; }
.login { max-width: 340px; margin: 60px auto; }
.kv { font-size: 12px; color: var(--muted); }
a.link { color: var(--primary); }