:root {
  --bg: #f3f5f2; --paper: #ffffff; --ink: #1d2622; --muted: #5f6b65; --line: #d7ddd8;
  --accent: #1f6b52; --accent-soft: #e2efe9; --gold: #a5781f; --warn: #9a4a1c; --warn-soft: #f6e9df;
  --font: "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", monospace;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 15px; line-height: 1.7; }
.wrap { max-width: 560px; margin: 0 auto; display: grid; gap: 14px;
  padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) calc(96px + env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left)); }
.brand { font-size: 12px; letter-spacing: .06em; color: var(--muted); }
h1 { margin: 0 0 10px; font-size: 22px; }
h2 { margin: 0 0 8px; font-size: 17px; }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 16px; display: grid; gap: 8px; }
.lead { margin: 0; color: var(--muted); }
.label { font-size: 12px; color: var(--muted); letter-spacing: .04em; margin: 4px 0 0; }
.note { font-size: 12px; color: var(--muted); margin: 0; }
.muted { color: var(--muted); }
input[type=text], select, textarea { font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px; width: 100%; }
.stack { display: grid; gap: 8px; margin-top: 4px; }
.btn { font: inherit; font-size: 15px; border-radius: 10px; padding: 12px 14px; border: 1px solid var(--line);
  background: var(--bg); color: var(--ink); cursor: pointer; }
.btn.main { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 700; }
.btn:disabled { opacity: .5; }
.btn:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.radio { display: flex; gap: 8px; align-items: center; }
.error { background: var(--warn-soft); color: var(--warn); border-radius: 8px; padding: 10px 12px; }
.ok { color: var(--accent); font-weight: 700; margin: 0; }
.who { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; font-weight: 700; }
.banner { background: var(--warn-soft); border-radius: 10px; padding: 12px; display: grid; gap: 8px; }
.banner p { margin: 0; color: var(--warn); font-size: 14px; }
.id { display: grid; grid-template-columns: 120px 1fr; gap: 14px; align-items: center; }
#qr { width: 120px; height: 120px; background: #fff; padding: 6px; border-radius: 6px; border: 1px solid var(--line); }
#qr svg { width: 100%; height: 100%; display: block; }
.code { font-family: var(--mono); font-size: 22px; letter-spacing: .06em; color: var(--accent); }
.url { font-family: var(--mono); font-size: 11px; color: var(--muted); word-break: break-all; }
.money { display: flex; gap: 6px; align-items: baseline; }
.big { font-size: 32px; font-weight: 700; color: var(--gold); font-variant-numeric: tabular-nums; }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; }
.tab { font: inherit; font-size: 13px; border-radius: 99px; padding: 6px 12px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); cursor: pointer; }
.tab[aria-selected=true] { background: var(--accent-soft); color: var(--accent); border-color: transparent; font-weight: 700; }
.stages { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; text-align: center; }
.stages div { background: var(--bg); border-radius: 8px; padding: 8px 4px; font-size: 12px; color: var(--muted); }
.stages b { display: block; font-size: 20px; color: var(--ink); font-variant-numeric: tabular-nums; }
.recent { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; font-size: 14px; }
.recent li { display: flex; justify-content: space-between; gap: 8px; border-bottom: 1px solid var(--line); padding: 6px 0; }
@media (max-width: 380px) { .id { grid-template-columns: 1fr; } }
.view { display: grid; gap: 14px; }
.view > h1 { margin: 0; }
.small { font-size: 13px; }
.center { justify-items: center; text-align: center; }
.center #qr { width: 220px; height: 220px; }
.center .code { font-size: 28px; }
.warnline { margin: 0; font-size: 13px; color: var(--warn); }
.nav { position: fixed; left: 0; right: 0; bottom: 0; z-index: 10; display: grid; grid-template-columns: repeat(5, 1fr);
  background: var(--paper); border-top: 1px solid var(--line);
  padding: 6px max(8px, env(safe-area-inset-right)) calc(6px + env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left)); }
.nav button { font: inherit; font-size: 11px; background: none; border: 0; color: var(--muted); display: grid; justify-items: center; gap: 2px; padding: 6px 0; cursor: pointer; }
.nav svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.nav button[aria-current=page] { color: var(--accent); font-weight: 700; }
.say { margin: 0; font-size: 16px; line-height: 1.8; }
.points { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; }
details { border-top: 1px solid var(--line); padding: 10px 0; }
details summary { font-weight: 700; cursor: pointer; }
details p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
a.btn { display: block; text-align: center; text-decoration: none; }