body {
  font-family: "Segoe UI", "PingFang SC", sans-serif;
  margin: 0;
  background: #f7f3ee;
  color: #2c1810;
}
.top {
  background: linear-gradient(135deg, #8b1a1a, #c41e3a);
  color: #fff;
  padding: 24px 20px;
}
.top h1 { margin: 0 0 8px; font-size: 1.4rem; }
.top p { margin: 0; opacity: 0.9; }
main { max-width: 720px; margin: 24px auto; padding: 0 16px; }
.card {
  background: #fff;
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 16px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
pre { background: #fafafa; padding: 12px; overflow: auto; font-size: 13px; }
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card {
  background: #fff; padding: 32px; border-radius: 8px; width: 320px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.login-card label { display: block; margin: 12px 0; font-size: 14px; }
.login-card input { width: 100%; padding: 8px; box-sizing: border-box; margin-top: 4px; }
.err { color: #c00; font-size: 13px; }
.top { display: flex; justify-content: space-between; align-items: center; }
.top button { background: transparent; border: 1px solid #fff; color: #fff; padding: 6px 12px; cursor: pointer; }
.tabs { display: flex; gap: 8px; padding: 12px 20px; background: #fff; border-bottom: 1px solid #eee; }
.tabs button { padding: 8px 16px; border: none; background: #eee; cursor: pointer; border-radius: 4px; }
.tabs button.active { background: #8b1a1a; color: #fff; }
.panel { max-width: 960px; margin: 0 auto; padding: 16px; }
.hidden { display: none; }
.hint { color: #666; font-size: 13px; }
.sku-row, .order-row {
  background: #fff; padding: 16px; margin-bottom: 12px; border-radius: 8px;
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
}
.sku-row label, .order-row label { font-size: 13px; }
.muted { font-size: 12px; color: #888; width: 100%; }