@media (max-width: 900px) {
  .topc-account-shell {
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
    min-width: 0;
    overflow: hidden;
  }

  .topc-account-content,
  .topc-account-nav {
    width: 100%;
    min-width: 0;
    max-width: 100%;
  }

  .topc-account-nav {
    overflow-x: auto;
    overflow-y: hidden;
  }

  .topc-account-detail-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.topc-receipt-confirmed {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 9px 14px;
  border-radius: 999px;
  background: #ecfdf3;
  color: #067647;
  font-weight: 800;
}

.topc-return-list { display: grid; gap: 16px; margin-top: 26px; }
.topc-return-card,
.topc-return-form { background: #fff; border: 1px solid #e4e7ec; border-radius: 16px; padding: 22px; }
.topc-return-card { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.topc-return-card h2 { margin: 5px 0 8px; font-size: 22px; }
.topc-return-card p { margin: 5px 0; }
.topc-return-form { margin-top: 24px; }
.topc-return-form .demo-form { border: 0; padding: 0; max-width: 680px; }
.topc-return-form select,
.topc-return-form input,
.topc-return-form textarea { width: 100%; min-height: 46px; padding: 11px 13px; border: 1px solid #d0d5dd; border-radius: 8px; background: #fff; font: inherit; }
.topc-return-form textarea { min-height: 120px; }
@media (max-width: 640px) { .topc-return-card { display: grid; } }
.topc-account-notifications { margin-top: 24px; padding: 22px; border: 1px solid #e4e7ec; border-radius: 16px; background: #fff; }
.topc-account-notifications h2 { margin-top: 0; }