:root {
  --fg: #1d1d1f;
  --muted: #5b5b66;
  --bg: #fafaf7;
  --card: #ffffff;
  --line: #d9d9de;
  --accent: #6b3f1d;
  --ok: #1d6b35;
  --err: #a1251b;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--fg);
  background: var(--bg);
}
body { margin: 0; }
.skip-link { position: absolute; left: -999px; }
.skip-link:focus { left: 1rem; top: 1rem; background: var(--card); padding: .5rem; }
.site-header {
  display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: space-between;
  padding: .75rem 1rem; background: var(--card); border-bottom: 1px solid var(--line);
}
.brand { margin: 0; font-weight: 700; color: var(--accent); }
nav a { margin-right: 1rem; color: var(--accent); }
nav a[aria-current="page"] { font-weight: 700; }
.account { display: flex; gap: .75rem; align-items: center; }
main, .messages { max-width: 60rem; margin: 0 auto; padding: 0 1rem; }
.messages p { margin: .75rem 0 0; }
.messages p:empty { display: none; }
#status-message { color: var(--ok); }
#error-message { color: var(--err); font-weight: 600; }
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { text-align: left; padding: .5rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
td.num, th.num { text-align: right; }
input { font: inherit; padding: .35rem .5rem; border: 1px solid var(--muted); border-radius: 4px; }
input[type="number"] { width: 4.5rem; }
button {
  font: inherit; padding: .35rem .75rem; border-radius: 4px; cursor: pointer;
  border: 1px solid var(--accent); background: var(--accent); color: #fff;
}
button.secondary { background: var(--card); color: var(--accent); }
form.stack { display: grid; gap: .5rem; max-width: 22rem; }
.inline { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.summary { display: grid; grid-template-columns: max-content max-content; gap: .25rem 1.5rem; margin: 1rem 0; }
.summary dt { color: var(--muted); }
.summary dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
@media (max-width: 40rem) { .site-header { flex-direction: column; align-items: flex-start; } }