:root {
  --bg: #f5f6f8; --fg: #1d2129; --muted: #6b7280; --card: #fff; --border: #e3e5e8;
  --accent: #2563eb; --ok: #15803d; --bad: #b91c1c; --warn: #b45309;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111318; --fg: #e5e7eb; --muted: #9ca3af; --card: #1b1e25; --border: #2c303a;
    --accent: #60a5fa; --ok: #4ade80; --bad: #f87171; --warn: #fbbf24; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 15px/1.5 system-ui, -apple-system, "PingFang TC", "Noto Sans TC", sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 24px 16px; }
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 0 0 12px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
header h1 { margin: 0; flex: 1; }
#who { color: var(--muted); }
.card, #login-form { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
#login-form { max-width: 360px; }
label { display: block; margin-bottom: 12px; }
input { display: block; width: 100%; margin-top: 4px; padding: 8px 10px; font: inherit; color: inherit; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; }
button { font: inherit; padding: 8px 16px; border: 0; border-radius: 6px; background: var(--accent); color: #fff; cursor: pointer; }
button:disabled { opacity: .5; cursor: default; }
button.secondary { background: transparent; color: var(--fg); border: 1px solid var(--border); }
.row { display: flex; align-items: center; gap: 12px; padding: 4px 0; }
.row span { flex: 1; color: var(--muted); }
fieldset { border: 0; padding: 0; margin: 0 0 12px; }
.payee { display: flex; gap: 10px; align-items: center; padding: 10px; border: 1px solid var(--border); border-radius: 8px; margin-bottom: 8px; cursor: pointer; }
.payee input { width: auto; margin: 0; }
.payee small { color: var(--muted); display: block; }
.error { color: var(--bad); min-height: 1.2em; margin: 8px 0 0; }
.hint { color: var(--muted); font-size: 13px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 6px 4px; border-bottom: 1px solid var(--border); }
td.num { text-align: right; white-space: nowrap; }
.s-SUCCESS { color: var(--ok); } .s-FAILED { color: var(--bad); } .s-UNKNOWN, .s-PROCESSING, .s-SUBMITTING { color: var(--warn); }
dialog { border: 1px solid var(--border); border-radius: 10px; background: var(--card); color: var(--fg); width: min(420px, calc(100vw - 32px)); }
dialog::backdrop { background: rgb(0 0 0 / .4); }
dl { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; margin: 0 0 12px; }
dt { color: var(--muted); } dd { margin: 0; font-weight: 600; }
.actions { display: flex; justify-content: flex-end; gap: 8px; }
@media (max-width: 520px) { th:nth-child(2), td:nth-child(2) { display: none; } }