:root {
  --gm-bg: #f6f1e8;
  --gm-ink: #2c2416;
  --gm-muted: #6b6254;
  --gm-card: #fffdf8;
  --gm-line: #e4d8c4;
  --gm-accent: #8b4513;
  --gm-accent-soft: #c4a574;
  --gm-ok: #166534;
  --gm-err: #b91c1c;
  --gm-warn: #b45309;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Zen Kaku Gothic New", sans-serif;
  color: var(--gm-ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% 0%, rgba(196, 165, 116, 0.25), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 20%, rgba(139, 69, 19, 0.08), transparent 50%),
    var(--gm-bg);
  min-height: 100vh;
  line-height: 1.6;
}
a { color: var(--gm-accent); }
.gm-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 20px;
  background: rgba(255, 253, 248, 0.92);
  border-bottom: 1px solid var(--gm-line);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
}
.gm-brand {
  font-family: "Shippori Mincho", serif;
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--gm-ink);
}
.gm-nav { display: flex; flex-wrap: wrap; gap: 10px 14px; font-size: 0.92rem; }
.gm-nav a { text-decoration: none; color: var(--gm-muted); }
.gm-nav a.is-active, .gm-nav a:hover { color: var(--gm-accent); }
.gm-main { max-width: 860px; margin: 0 auto; padding: 20px 16px 48px; }
.gm-notice {
  background: #fff8e7;
  border: 1px solid #e8d48b;
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 0.92rem;
  margin-bottom: 16px;
  line-height: 1.55;
}
.gm-notice-title {
  display: block;
  font-family: "Shippori Mincho", serif;
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--gm-ink);
}
.gm-notice p {
  margin: 0 0 0.7em;
}
.gm-notice p:last-child {
  margin-bottom: 0;
}
.gm-card {
  background: var(--gm-card);
  border: 1px solid var(--gm-line);
  border-radius: 14px;
  padding: 20px 18px;
  margin-bottom: 16px;
}
.gm-narrow { max-width: 520px; }
.gm-card h1 {
  font-family: "Shippori Mincho", serif;
  font-size: 1.5rem;
  margin: 0 0 8px;
}
.gm-card h2, .gm-h2 {
  font-family: "Shippori Mincho", serif;
  font-size: 1.15rem;
  margin: 1rem 0 0.5rem;
}
.gm-lead { font-size: 1.05rem; margin: 0.4rem 0; }
.gm-muted { color: var(--gm-muted); font-size: 0.92rem; }
.gm-points { color: var(--gm-accent); font-size: 1.25em; }
.gm-ok { color: var(--gm-ok); }
.gm-err { color: var(--gm-err); }
.gm-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.btn {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--gm-line);
  background: #fff;
  color: var(--gm-ink);
  text-decoration: none;
  font: inherit;
  cursor: pointer;
}
.btn-primary { background: var(--gm-accent); color: #fff; border-color: var(--gm-accent); }
.btn-warn { background: #fff7ed; color: var(--gm-warn); border-color: #fdba74; }
.btn-sm { padding: 6px 10px; font-size: 0.88rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.gm-form { display: flex; flex-direction: column; gap: 12px; margin-top: 12px; }
.gm-form label { display: flex; flex-direction: column; gap: 4px; font-size: 0.88rem; color: var(--gm-muted); }
.gm-form input, .gm-form select, .gm-form textarea {
  font: inherit;
  padding: 9px 11px;
  border: 1px solid var(--gm-line);
  border-radius: 8px;
  color: var(--gm-ink);
  background: #fff;
}
.gm-order-list, .gm-shop-list, .gm-ledger { list-style: none; padding: 0; margin: 0; }
.gm-order-list li, .gm-ledger li, .gm-order-card {
  border-top: 1px solid var(--gm-line);
  padding: 12px 0;
}
.gm-order-card:first-child { border-top: 0; padding-top: 0; }
.gm-order-head { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 4px; }
.gm-badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: #efe6d6;
  color: #5c4a32;
}
.gm-cancel { margin-top: 10px; }
.gm-cancel summary { cursor: pointer; color: var(--gm-warn); }
.gm-rewards { display: grid; gap: 12px; margin-top: 12px; }
@media (min-width: 640px) {
  .gm-rewards { grid-template-columns: 1fr 1fr; }
}
.gm-reward-card {
  border: 1px solid var(--gm-line);
  border-radius: 12px;
  padding: 14px;
  background: #fff;
}
.gm-reward-card h2 { margin: 0 0 6px; font-size: 1.05rem; }
.gm-ledger-row { display: flex; justify-content: space-between; gap: 8px; }
.gm-plus { color: var(--gm-ok); font-weight: 600; }
.gm-minus { color: var(--gm-err); font-weight: 600; }
.gm-footer {
  text-align: center;
  padding: 24px 16px 40px;
  color: var(--gm-muted);
  font-size: 0.88rem;
}
.gm-footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 16px;
  margin: 8px 0;
}
.gm-footer-legal a { color: var(--gm-muted); }
.gm-footer-shops { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 16px; margin: 8px 0; }
.gm-footer-shops a { color: var(--gm-muted); }
.gm-copy { margin-top: 8px; }
.gm-footer > p a { color: inherit; text-decoration: underline; }
.gm-legal h1 { line-height: 1.35; }
.gm-legal-toc ul { margin: 0; padding-left: 1.2rem; }
.gm-legal-anchor { scroll-margin-top: 1rem; margin-top: 1.75rem; }
.gm-legal-block { margin: 1rem 0 1.25rem; }
.gm-legal-block h3 {
  font-size: 1rem;
  margin: 0 0 0.4rem;
  font-family: "Shippori Mincho", serif;
}
.gm-legal-block ul { margin: 0.35rem 0 0; padding-left: 1.2rem; }
.gm-legal-shops { list-style: none; padding-left: 0; }
.gm-legal-shops li { margin: 0.4rem 0; }