:root {
  --bg: #f5f6f8; --card: #fff; --text: #1d2330; --muted: #6b7280; --line: #e2e5ea;
  --accent: #2557c7; --danger: #c62828; --warn-bg: #fff6e0; --warn-line: #e6b54a; --err-bg: #fdecec;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c; --card: #1d2128; --text: #e6e8eb; --muted: #9aa1ab; --line: #2e333c;
    --accent: #7aa2ff; --danger: #ff6b6b; --warn-bg: #3a2f14; --warn-line: #9c7a2a; --err-bg: #3a1d1d;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.6 system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif; }
a { color: var(--accent); }
main { max-width: 1000px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.35rem; margin: .2em 0 .6em; }
h2 { font-size: 1.05rem; margin: 0 0 .6em; }
.top { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; padding: 10px 16px;
  background: var(--card); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; font-size: 1.1rem; text-decoration: none; color: var(--text); }
.top nav { display: flex; flex-wrap: wrap; gap: 4px 14px; flex: 1; font-size: .92rem; }
.top nav a { text-decoration: none; }
.logout { margin: 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.narrow { max-width: 440px; margin: 24px auto; }
.muted, small, .count, .crumb { color: var(--muted); }
.count { font-size: .85rem; font-weight: normal; }
.crumb { margin: 0 0 4px; font-size: .9rem; }
.head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px; }
.actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
label { display: block; margin-bottom: 14px; font-weight: 600; font-size: .92rem; }
label small { display: block; font-weight: normal; }
label.check { font-weight: normal; }
input[type=text], input[type=password], input[type=search], input[type=url], input[type=number],
input[type=date], select, textarea {
  display: block; width: 100%; margin-top: 4px; padding: 8px 10px; font: inherit; font-weight: normal;
  color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 6px; }
textarea { resize: vertical; }
button, .btn { display: inline-block; padding: 8px 16px; font: inherit; font-weight: 600; border-radius: 6px;
  border: 1px solid var(--accent); background: var(--accent); color: #fff; cursor: pointer; text-decoration: none; }
@media (prefers-color-scheme: dark) { button, .btn { color: #10131a; } }
.btn.danger, button.danger { background: var(--danger); border-color: var(--danger); }
button.link { background: none; border: none; color: var(--accent); padding: 0; font-weight: normal; }
.req { color: var(--danger); font-size: .75rem; }
.error { background: var(--err-bg); border-left: 4px solid var(--danger); padding: 8px 12px; border-radius: 4px; }
.warning { background: var(--warn-bg); border-left: 4px solid var(--warn-line); padding: 8px 12px; border-radius: 4px; }
.error ul, .warning ul { margin: 4px 0; }
.search { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.search input, .search select { width: auto; flex: 1 1 160px; margin: 0; }
table.list { width: 100%; border-collapse: collapse; background: var(--card); }
table.list th, table.list td { text-align: left; padding: 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.list th { font-size: .82rem; color: var(--muted); }
.num { text-align: right !important; white-space: nowrap; }
tr.overdue td { color: var(--danger); }
.badge { font-size: .75rem; border: 1px solid currentColor; border-radius: 4px; padding: 0 4px; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-bottom: 16px; }
.tile { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; padding: 16px; text-decoration: none; color: var(--text); }
.tile.warn { border-color: var(--warn-line); }
.tile-label { font-size: .88rem; color: var(--muted); }
.tile-value { font-size: 1.8rem; font-weight: 700; }
.tile-sub { font-size: .78rem; color: var(--muted); }
.ledger-links { list-style: none; padding: 0; margin: 0; }
.ledger-links li { padding: 6px 0; border-bottom: 1px solid var(--line); }
.small { font-size: .82rem; margin-left: 8px; }
dl.detail { display: grid; grid-template-columns: 12em 1fr; gap: 8px 16px; margin: 0; }
dl.detail dt { color: var(--muted); font-size: .88rem; }
dl.detail dd { margin: 0; overflow-wrap: anywhere; }
.pre { white-space: pre-wrap; }
.md :first-child { margin-top: 0; }
.md pre, .md code { background: var(--bg); border-radius: 4px; }
.md pre { padding: 8px; overflow-x: auto; }
.qr { display: block; width: 220px; max-width: 100%; margin: 12px auto; background: #fff; padding: 8px; border-radius: 6px; }
code.secret { word-break: break-all; }
@media (max-width: 640px) {
  dl.detail { grid-template-columns: 1fr; gap: 2px; }
  dl.detail dd { margin-bottom: 8px; }
  table.list thead { display: none; }
  table.list tr { display: block; padding: 8px 0; border-bottom: 1px solid var(--line); }
  table.list td { display: flex; gap: 8px; border: none; padding: 2px 8px; }
  table.list td::before { content: attr(data-label); color: var(--muted); font-size: .8rem; min-width: 7em; }
  table.list td.num { text-align: left !important; }
}