:root {
  font-family: system-ui, "Microsoft JhengHei", sans-serif;
  background: #f2f6f4;
  color: #172b25;
  --accent: #0d654d;
  --border: #cbd9d1;
  --muted: #50655c;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; }

.top {
  padding: .85rem max(1rem, calc((100vw - 67rem) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  border-bottom: 1px solid var(--border);
  background: #fff;
}

.brand, .header-actions, .actions, .section-header { display: flex; align-items: center; gap: .65rem; }
.brand { font-size: 1.1rem; font-weight: 750; }
.mark {
  display: grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: .6rem;
  background: var(--accent);
  color: #fff;
}

.badge { border-radius: 1rem; background: #e5f0ea; padding: .3rem .6rem; color: #18563f; font-size: .8rem; }
main { max-width: 69rem; margin: auto; padding: clamp(1rem, 4vw, 2rem); }
.intro { margin-bottom: 1.4rem; }
.eyebrow { color: var(--accent); font-weight: 700; margin: 0 0 .45rem; }
h1 { margin: 0; font-size: clamp(1.85rem, 5vw, 2.7rem); line-height: 1.2; }
h2 { margin: 0 0 1rem; font-size: 1.25rem; }
p { line-height: 1.55; }
.muted { color: var(--muted); }
.columns { display: grid; grid-template-columns: minmax(17rem, .85fr) minmax(0, 1.15fr); gap: 1rem; align-items: start; }
.panel { background: #fff; border: 1px solid var(--border); border-radius: 1rem; padding: clamp(1rem, 3vw, 1.5rem); min-width: 0; }
.login { max-width: 28rem; margin: 3rem auto; }
form, fieldset { display: grid; gap: .65rem; }
fieldset { padding: 0; margin: 0; border: 0; min-width: 0; }
label { font-weight: 650; }
input, select, textarea, button { font: inherit; }
input, select, textarea {
  min-height: 2.75rem;
  width: 100%;
  padding: .55rem .7rem;
  border: 1px solid #9aafa3;
  border-radius: .5rem;
  color: inherit;
  background: #fff;
}

button {
  min-height: 2.75rem;
  padding: .5rem .85rem;
  border: 1px solid transparent;
  border-radius: .5rem;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

button.secondary { border-color: var(--border); background: #fff; color: var(--accent); }
button:disabled { opacity: .6; cursor: default; }
:focus-visible { outline: 3px solid #0879b4; outline-offset: 2px; }
details { padding: .4rem 0; }
details > label { display: block; margin: .65rem 0 .25rem; }
summary { cursor: pointer; color: var(--accent); padding: .3rem 0; }
.actions { flex-wrap: wrap; margin-top: .65rem; }
.section-header { justify-content: space-between; }
.section-header h2 { margin: 0; }
[role="status"]:empty { margin: 0; }
[data-error="true"] { color: #983a28; }

#transactions { list-style: none; padding: 0; margin: 0; }
#transactions li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: .65rem;
  padding: .85rem 0;
  border-top: 1px solid var(--border);
  align-items: start;
}

.record-main { min-width: 0; }
.record-main strong, .record-main span { display: block; overflow-wrap: anywhere; }
.record-main span { color: var(--muted); font-size: .875rem; margin-top: .2rem; }
.record-actions { display: grid; justify-items: end; gap: .25rem; }
.record-amount { font-weight: 750; font-variant-numeric: tabular-nums; }

@media (max-width: 42rem) {
  .columns { grid-template-columns: 1fr; }
  .login { margin: 1.5rem auto; }
}