:root {
  --bg: #f6f7f4;
  --card: #ffffff;
  --text: #17211a;
  --muted: #5c6a60;
  --line: #dde3dc;
  --brand: #166534;
  --brand-strong: #14532d;
  --brand-soft: #e7f2e9;
  --danger: #b3261e;
  --up: #b3261e;
  --down: #166534;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101511;
    --card: #1a211c;
    --text: #e8efe9;
    --muted: #9db0a2;
    --line: #2d3a30;
    --brand: #4ade80;
    --brand-strong: #22c55e;
    --brand-soft: #1d2f23;
    --danger: #f2b8b5;
    --up: #f2b8b5;
    --down: #4ade80;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "PingFang HK", "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}
a { color: var(--brand); }
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; max-width: 960px; margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; }
.brand img { border-radius: 8px; }
.site-header nav { display: flex; gap: 16px; }
.site-header nav a { color: var(--muted); text-decoration: none; font-weight: 600; }
.site-header nav a[aria-current="page"] { color: var(--text); }
main { max-width: 960px; margin: 0 auto; padding: 0 16px 40px; }
.hero { padding: 24px 4px 8px; }
.hero h1 { font-size: 1.9rem; margin: 0 0 8px; letter-spacing: -0.01em; }
.hero p { color: var(--muted); max-width: 640px; margin: 0 0 16px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 16px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--card); color: var(--text); font-weight: 600; font-size: 0.95rem;
  cursor: pointer; text-decoration: none; min-height: 44px;
}
.btn.primary { background: var(--brand-strong); border-color: var(--brand-strong); color: #fff; }
@media (prefers-color-scheme: dark) { .btn.primary { color: #0b120c; } }
.btn.small { padding: 4px 12px; min-height: 32px; font-size: 0.85rem; }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--danger); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; margin-top: 20px;
}
.card h2 { margin: 0 0 14px; font-size: 1.25rem; }
.card h3.sub { margin: 20px 0 10px; font-size: 1rem; color: var(--muted); }
.card-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.month-pick { color: var(--muted); font-weight: 600; display: flex; gap: 8px; align-items: center; }
input, select {
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px; padding: 9px 12px; min-height: 44px;
}
.totals { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.total-card { background: var(--brand-soft); border-radius: 12px; padding: 14px 16px; }
.total-amt { font-size: 1.5rem; font-weight: 800; }
.total-ccy { color: var(--muted); font-weight: 600; font-size: 0.9rem; }
.cmp { display: block; margin-top: 4px; font-size: 0.85rem; color: var(--muted); }
.cmp.up { color: var(--up); }
.cmp.down { color: var(--down); }
.cat-group h4 { margin: 10px 0 6px; font-size: 0.95rem; }
.bar-row { display: grid; grid-template-columns: 52px 1fr auto; gap: 10px; align-items: center; margin: 6px 0; }
.bar-cat { font-weight: 600; }
.bar-track { background: var(--bg); border: 1px solid var(--line); border-radius: 999px; height: 12px; overflow: hidden; }
.bar-fill { display: block; height: 100%; background: var(--brand); border-radius: 999px; }
.bar-amt { font-variant-numeric: tabular-nums; color: var(--muted); font-size: 0.9rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
.grid label { display: flex; flex-direction: column; gap: 6px; font-weight: 600; font-size: 0.92rem; }
.form-actions { margin-top: 16px; display: flex; gap: 10px; }
.spend-list { list-style: none; margin: 0; padding: 0; }
.spend-row { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.spend-row:last-child { border-bottom: none; }
.spend-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.spend-vendor { font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.spend-meta { color: var(--muted); font-size: 0.85rem; }
.spend-amt { font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }
.spend-actions { display: flex; gap: 6px; }
.progress { margin-top: 14px; display: flex; align-items: center; gap: 12px; }
.progress-track { flex: 1; height: 10px; background: var(--card); border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.progress-fill { height: 100%; width: 0; background: var(--brand); transition: width 0.2s; }
.status { min-height: 1.4em; margin-top: 12px; font-weight: 600; }
.status.error { color: var(--danger); }
.empty { color: var(--muted); }
.privacy p { color: var(--muted); margin: 0; }
.site-footer { max-width: 960px; margin: 0 auto; padding: 24px 20px 40px; color: var(--muted); font-size: 0.9rem; }
.site-footer p { margin: 4px 0; }
.value-list { list-style: none; margin: 0; padding: 0; }
.value-list li { padding: 10px 0; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; }
.value-list li:last-child { border-bottom: none; }
.value-list .v-name { font-weight: 600; }
.value-list .v-desc { color: var(--muted); display: block; font-weight: 400; font-size: 0.9rem; }
.value-list .v-price { font-weight: 700; white-space: nowrap; }
@media (max-width: 560px) {
  .hero h1 { font-size: 1.55rem; }
  .spend-row { flex-wrap: wrap; }
  .spend-actions { width: 100%; }
}