:root {
  --ink: #16181d;
  --muted: #545a66;
  --paper: #ffffff;
  --panel: #f5f4f8;
  --line: #dcd9e4;
  --accent: #5b3e96;          /* Tudlab Miles accent; white text 8.2:1 */
  --accent-soft: #ece6f7;
  --ok: #1f6b3a;
  --ok-soft: #e4f3e9;
  --warn: #8a5a00;
  --warn-soft: #fbf1dc;
  --block: #8f2d2d;
  --block-soft: #f8e6e6;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eceaf2;
    --muted: #a9a6b5;
    --paper: #131419;
    --panel: #1d1e25;
    --line: #34343f;
    --accent: #b9a3e8;
    --accent-soft: #2a2340;
    --ok: #7fd39b;
    --ok-soft: #17291e;
    --warn: #f0c46a;
    --warn-soft: #2d2412;
    --block: #f09a9a;
    --block-soft: #2e1818;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
main, .top { max-width: 720px; margin: 0 auto; padding: 0 16px; }
.top { padding-top: 14px; padding-bottom: 6px; }
.brand { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; color: var(--accent); }
.brand img { display: block; height: 24px; width: auto; }
.product { font-weight: 700; font-size: 20px; letter-spacing: -0.01em; }
h1 { font-size: 1.5rem; line-height: 1.25; margin: 14px 0 6px; }
h2 { font-size: 1.1rem; margin: 18px 0 8px; }
.purpose { margin: 0 0 12px; color: var(--muted); }
.money-link { margin: 0 0 16px; font-weight: 600; }
a { color: var(--accent); }

.disclosure {
  margin-top: 8px; padding: 10px 12px; border-radius: var(--radius);
  background: var(--warn-soft); border: 1px solid var(--line); font-size: 0.92rem;
}
.tag { display: inline-block; font-size: 0.75rem; font-weight: 700; padding: 1px 7px; border-radius: 999px; white-space: nowrap; vertical-align: 1px; }
.tag.paid { background: var(--warn); color: var(--paper); }
.tag.plain { background: var(--panel); color: var(--ink); border: 1px solid var(--line); }

.howto { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); margin: 6px 0 4px; }
.howto summary { cursor: pointer; padding: 10px 12px; font-weight: 600; }
.howto-body { padding: 0 14px 10px; font-size: 0.95rem; }
.howto-body h2 { font-size: 1rem; margin: 12px 0 4px; }
.howto-body ul { padding-left: 18px; margin: 4px 0; }

.hint { color: var(--muted); font-size: 0.92rem; margin: 0 0 8px; }
.banks { display: grid; gap: 8px; }
.bank { border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 12px; }
.bank-name { font-weight: 650; display: flex; justify-content: space-between; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.bank-name small { font-weight: 400; color: var(--muted); }
.card-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; align-items: center; }
.card-row select, .card-row input {
  font: inherit; min-height: 44px; padding: 6px 10px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--paper); color: var(--ink); max-width: 100%;
}
.card-row select { flex: 1 1 200px; }
.card-row input[type=month] { flex: 1 1 160px; }
.card-row .remove { min-height: 44px; }
button { font: inherit; cursor: pointer; }
.linkbtn { background: none; border: none; color: var(--accent); padding: 6px 0; text-decoration: underline; min-height: 36px; }
.err { color: var(--block); font-size: 0.88rem; flex-basis: 100%; }

.filter { display: flex; flex-wrap: wrap; gap: 6px 14px; margin: 12px 0 0; align-items: center; font-size: 0.95rem; }
.filter label { display: inline-flex; align-items: center; gap: 4px; min-height: 36px; }

.group-h { display: flex; align-items: baseline; gap: 8px; margin-top: 22px; }
.group-h .count { color: var(--muted); font-size: 0.9rem; font-weight: 400; }
.group-note { color: var(--muted); font-size: 0.9rem; margin: -2px 0 8px; }
.offers { display: grid; gap: 10px; }
.offer { border: 1px solid var(--line); border-left-width: 5px; border-radius: var(--radius); padding: 12px; background: var(--paper); }
.offer.claimable { border-left-color: var(--ok); }
.offer.check { border-left-color: var(--warn); }
.offer.blocked { border-left-color: var(--block); }
.offer-top { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.offer .bank-l { font-size: 0.85rem; color: var(--muted); }
.offer h3 { font-size: 1.05rem; margin: 0; }
.bonus { font-size: 1.05rem; font-weight: 700; margin: 6px 0 4px; }
.status { font-size: 0.8rem; font-weight: 700; padding: 2px 8px; border-radius: 999px; align-self: flex-start; white-space: nowrap; }
.status.claimable { background: var(--ok-soft); color: var(--ok); }
.status.check { background: var(--warn-soft); color: var(--warn); }
.status.blocked { background: var(--block-soft); color: var(--block); }
.facts { list-style: none; padding: 0; margin: 4px 0; font-size: 0.93rem; display: grid; gap: 2px; }
.facts b { font-weight: 600; }
.why { font-size: 0.93rem; margin: 6px 0; }
.caveat { font-size: 0.85rem; color: var(--muted); margin: 6px 0; }
.offer details.more { font-size: 0.88rem; margin-top: 6px; }
.offer details.more summary { cursor: pointer; color: var(--accent); min-height: 32px; display: list-item; }
.offer blockquote { margin: 6px 0; padding: 6px 10px; border-left: 3px solid var(--line); background: var(--panel); border-radius: 6px; overflow-wrap: anywhere; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 8px; }
.apply {
  display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 8px 14px;
  background: var(--accent); color: var(--paper); border-radius: 10px; text-decoration: none; font-weight: 650;
}
.offer.blocked .apply, .offer.check .apply { background: var(--panel); color: var(--ink); border: 1px solid var(--line); }
.hidden-note, .loading, .noscript { color: var(--muted); font-size: 0.9rem; }
.foot { margin: 28px 0 40px; font-size: 0.85rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: 10px; }
.empty { color: var(--muted); font-style: italic; }
.summary { margin: 18px 0 0; padding: 8px 12px; border-radius: var(--radius); background: var(--accent-soft); font-weight: 600; font-size: 0.95rem; }
.summary .jump { color: var(--ink); text-decoration: none; }
.group { scroll-margin-top: 8px; }
/* review 07-Oct: tap targets >= 44px, notes */
.summary { display: flex; flex-wrap: wrap; gap: 4px 6px; padding: 4px 6px; }
.summary .jump { display: inline-flex; align-items: center; min-height: 44px; padding: 0 10px; border-radius: 8px; }
.summary .jump:hover, .summary .jump:focus { background: var(--panel); }
.interest { font-size: 0.9rem; margin: 8px 0 0; padding: 8px 12px; border-radius: var(--radius); border: 1px solid var(--line); }
.bank-note { margin: 2px 0 0; font-size: 0.85rem; color: var(--muted); }
.linkbtn { min-height: 44px; }
.filter input[type=radio] { width: 20px; height: 20px; margin: 0 4px 0 0; }
.filter label { min-height: 44px; padding-right: 4px; }
.offer .src a, .foot a { display: inline-block; min-height: 32px; line-height: 32px; }
.unconfirmed { margin: 6px 0; padding: 6px 10px; border-radius: 8px; background: var(--warn-soft); color: var(--ink); font-size: 0.9rem; border: 1px solid var(--warn); }
/* review 2 (07-Oct) */
.brand { min-height: 44px; }
.howto summary, .offer details.more summary, .group-fold > summary { min-height: 44px; display: flex; align-items: center; }
.offer details.more summary { list-style: none; }
.offer details.more summary::before { content: "▸"; margin-right: 6px; }
.offer details.more[open] summary::before { content: "▾"; }
.offer .src a, .foot a { min-height: 44px; line-height: 44px; }
.confirm { display: flex; gap: 10px; align-items: flex-start; margin-top: 8px; padding: 8px 10px; border-radius: 8px; background: var(--panel); font-size: 0.9rem; min-height: 44px; cursor: pointer; }
.confirm input { width: 22px; height: 22px; flex: 0 0 auto; margin: 0; }
.group-fold > summary { cursor: pointer; list-style: none; }
.group-fold > summary .group-h { margin: 0; }
.group-fold > summary .group-h::after { content: " ▸"; color: var(--muted); }
.group-fold[open] > summary .group-h::after { content: " ▾"; }
.howto summary::before { content: "▸"; margin-right: 8px; }
.howto[open] summary::before { content: "▾"; }
.howto summary { list-style: none; }
/* review 7: long select options must not widen the bank boxes at 360 px */
.bank { min-width: 0; }
.card-row select { min-width: 0; width: 100%; }
/* 07-Nov: bank chips, the answer first, one-line offers, remember, reminders */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 10px; }
.chip { min-height: 44px; padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); font-weight: 600; }
.chip.on, .chip[aria-pressed=true] { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.bank.mini { background: var(--panel); }
.answer { margin: 18px 0 0; padding: 12px 14px; border-radius: var(--radius); background: var(--accent-soft); border: 1px solid var(--line); }
.answer-h { font-size: 1.15rem; font-weight: 700; margin: 0 0 6px; }
.answer ul { margin: 0; padding-left: 18px; font-size: 0.95rem; display: grid; gap: 2px; }
.answer .answer-note { color: var(--muted); font-size: 0.88rem; }
.answer .summary { margin: 8px 0 0; padding: 0; background: none; }
.changes { margin: 0 0 12px; padding: 10px 12px; border-radius: var(--radius); border: 1px solid var(--ok); background: var(--ok-soft); font-size: 0.95rem; }
.changes h2 { margin: 0 0 4px; font-size: 1rem; }
.changes ul { margin: 0; padding-left: 18px; }
.changes p { margin: 0; }
.offer-fold > summary { cursor: pointer; list-style: none; display: grid; gap: 2px; min-height: 44px; }
.offer-fold > summary::-webkit-details-marker { display: none; }
.offer-fold > summary .card-n { display: block; font-weight: 650; font-size: 1.02rem; }
.offer-fold > summary .bank-l { display: block; }
.offer-fold > summary .bonus { font-size: 0.95rem; font-weight: 600; margin: 2px 0 0; }
.offer-fold > summary .bonus::after { content: " ▸"; color: var(--muted); }
.offer-fold[open] > summary .bonus::after { content: " ▾"; }
.remember { margin-top: 12px; }
.remind { min-height: 44px; padding: 6px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); }
/* 07-Nov: rough value (an estimate; never changes the order) */
.offer .value { font-size: 0.92rem; margin: 2px 0 8px; }
.offer-fold > summary .val-tag { font-size: 0.88rem; color: var(--muted); }