:root {
  --bg: #f4f6fb;
  --panel: #ffffff;
  --ink: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --brand: #2563eb;
  --up: #16a34a;
  --down: #dc2626;
  --shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, "Segoe UI", "Microsoft JhengHei", "PingFang TC", Roboto, sans-serif;
  line-height: 1.5;
}

.container { max-width: 1080px; margin: 0 auto; padding: 32px 20px 64px; }
.container.narrow { max-width: 640px; }

h1 { font-size: 1.7rem; margin: 0 0 4px; }
h2 { font-size: 1.05rem; margin: 0 0 14px; }

.muted { color: var(--muted); }
.small { font-size: .85rem; }

.page-head { margin-bottom: 24px; }

.btn {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
}
.btn:hover { filter: brightness(1.05); }

/* summary cards */
.cards {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.card.primary { background: linear-gradient(135deg, #1e3a8a, #2563eb); color: #fff; border: none; }
.card-label { font-size: .85rem; opacity: .85; margin-bottom: 6px; }
.card-value { font-size: 1.7rem; font-weight: 700; letter-spacing: .3px; }
.card-change { margin-top: 6px; font-weight: 600; }

.up { color: var(--up); }
.down { color: var(--down); }
.card.primary .up { color: #bbf7d0; }
.card.primary .down { color: #fecaca; }

/* panels */
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 20px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .94rem; }
th, td { padding: 9px 10px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tfoot td { font-weight: 600; border-top: 2px solid var(--line); border-bottom: none; }
tfoot tr.grand td { color: var(--brand); font-size: 1.02rem; }

@media (max-width: 760px) {
  .cards { grid-template-columns: 1fr; }
  .grid2 { grid-template-columns: 1fr; }
}