:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #16181d;
  --muted: #5b6270;
  --line: #e2e5ea;
  --accent: #1f5eff;
  --accent-text: #ffffff;
  --warn-bg: #fff8e6;
  --warn-line: #f0d48a;
  --ok-bg: #eaf7ee;
  --error: #b42318;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --card: #1b1e24;
    --text: #eceef2;
    --muted: #a3a9b5;
    --line: #2c3139;
    --accent: #5b8cff;
    --warn-bg: #2a2414;
    --warn-line: #6b5520;
    --ok-bg: #15281c;
    --error: #ff8a80;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 520px; margin: 0 auto; padding: 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 16px;
}
h1 { font-size: 1.35rem; margin: 0 0 8px; line-height: 1.25; }
h2 { font-size: 1.1rem; margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }
.num {
  display: inline-grid; place-items: center;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); color: var(--accent-text); font-size: .9rem;
}
.eyebrow { margin: 0; color: var(--muted); font-size: .9rem; }
.amount { font-size: 2rem; font-weight: 700; margin: 4px 0; }
.purpose { margin: 0; color: var(--muted); overflow-wrap: anywhere; }
.muted, .hint { color: var(--muted); font-size: .92rem; }
.hint { margin: 10px 0 0; }
.mono { font-family: ui-monospace, "SF Mono", Consolas, monospace; letter-spacing: .02em; }
.qr { background: #fff; border-radius: 12px; padding: 8px; max-width: 320px; margin: 0 auto; }
.qr svg { display: block; width: 100%; height: auto; }
.btn {
  display: block; width: 100%; text-align: center; text-decoration: none;
  padding: 14px 16px; border-radius: 12px; border: 1px solid var(--line);
  font: inherit; font-weight: 600; cursor: pointer;
  background: var(--card); color: var(--text);
}
.btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.btn.secondary { margin-top: 10px; }
.banks { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.btn.bank { padding: 12px 8px; font-weight: 500; }
.req { margin: 0; }
.req > div { padding: 10px 0; border-top: 1px solid var(--line); }
.req > div:first-child { border-top: 0; padding-top: 0; }
.req dt { color: var(--muted); font-size: .85rem; }
.req dd { margin: 2px 0 0; display: flex; gap: 10px; align-items: flex-start; justify-content: space-between; }
.req dd span { overflow-wrap: anywhere; }
button.copy {
  flex: none; font: inherit; font-size: .85rem; padding: 6px 10px;
  border-radius: 8px; border: 1px solid var(--line); background: transparent; color: var(--accent); cursor: pointer;
}
.btn.copy { font-size: 1rem; padding: 14px 16px; color: var(--accent-text); }
.warn { background: var(--warn-bg); border-color: var(--warn-line); }
.warn ul { margin: 0; padding-left: 20px; }
.warn li + li { margin-top: 6px; }
.done { background: var(--ok-bg); }
.form label, .done label, .warn label { display: block; font-weight: 600; margin: 12px 0 6px; }
.form input, .form textarea, .done input, .warn input {
  width: 100%; font: inherit; padding: 12px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--card); color: var(--text);
}
.form .btn { margin-top: 16px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.row .btn.secondary { margin-top: 0; }
.error { color: var(--error); margin: 10px 0 0; }
.logout { text-align: center; }
button.link { background: none; border: 0; color: var(--muted); font: inherit; text-decoration: underline; cursor: pointer; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.other { margin-top: 10px; }
.other summary { list-style: none; }
.other summary.btn { margin-top: 0; }
.other summary::-webkit-details-marker { display: none; }
.other[open] summary { margin-bottom: 4px; }
.steps { margin: 12px 0 0; padding-left: 22px; }
.steps li + li { margin-top: 10px; }
.steps .btn { margin-top: 8px; }
.chosen { background: var(--warn-bg); border: 1px solid var(--warn-line); border-radius: 12px; padding: 12px 14px; margin-bottom: 12px; }
.chosen p { margin: 0; }
.chosen .steps { margin-top: 8px; }