* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1420;
  --card: #1a2233;
  --card-hover: #222c42;
  --accent: #3a7bff;
  --accent-2: #14d8a6;
  --text: #e8edf5;
  --muted: #8a96ab;
  --warn: #ffb454;
  --danger: #ff5d6c;
  --line: #2a3650;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.topbar {
  padding: 18px 16px 14px;
  background: linear-gradient(135deg, #16203a, #0f1420);
  border-bottom: 1px solid var(--line);
  text-align: center;
}
.brand {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--accent-2);
}
.slogan {
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

.wrap { max-width: 560px; margin: 0 auto; padding: 16px; }

.notice {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 18px;
}
.notice .warn { color: var(--warn); margin-top: 6px; }

.products .group-title {
  font-size: 14px;
  color: var(--muted);
  margin: 16px 4px 8px;
  font-weight: 600;
}
.loading { text-align: center; color: var(--muted); padding: 40px 0; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.card:hover { background: var(--card-hover); }
.card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
.card .info .name { font-size: 15px; font-weight: 600; }
.card .info .tag {
  display: inline-block;
  font-size: 11px;
  color: var(--accent-2);
  border: 1px solid var(--accent-2);
  border-radius: 4px;
  padding: 0 5px;
  margin-left: 6px;
  vertical-align: middle;
}
.card .price { font-size: 18px; font-weight: 700; color: var(--accent-2); white-space: nowrap; }
.card .price small { font-size: 12px; color: var(--muted); font-weight: 400; }

.order-form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  margin-top: 20px;
}
.order-form h2 { font-size: 16px; margin-bottom: 12px; }
.selected-sku {
  background: #0f1420;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
  color: var(--text);
  margin-bottom: 14px;
}
.selected-sku b { color: var(--accent-2); }

.field { display: block; margin-bottom: 14px; }
.field > span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field input {
  width: 100%;
  background: #0f1420;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  color: var(--text);
  font-size: 14px;
  letter-spacing: 1px;
}
.field input:focus { outline: none; border-color: var(--accent); }
.field small { display: block; font-size: 11px; color: var(--muted); margin-top: 6px; }

.btn-primary {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 14px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .15s;
}
.btn-primary:disabled { opacity: .4; cursor: not-allowed; }
.btn-primary:not(:disabled):active { opacity: .8; }

.hint { font-size: 11px; color: var(--muted); margin-top: 8px; text-align: center; }

.result {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  margin-top: 16px;
  font-size: 14px;
}
.result.ok { border-color: var(--accent-2); }
.result.fail { border-color: var(--danger); }
.result h3 { font-size: 15px; margin-bottom: 10px; }
.result .row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px dashed var(--line); }
.result .row:last-child { border-bottom: none; }
.result .k { color: var(--muted); }
.result .v { font-weight: 600; word-break: break-all; text-align: right; max-width: 65%; }
.result .state-ready { color: var(--accent-2); }
.result .state-processing { color: var(--warn); }
.result pre {
  background: #0f1420;
  border-radius: 8px;
  padding: 10px;
  font-size: 12px;
  color: var(--muted);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  margin-top: 10px;
}

.footer {
  text-align: center;
  font-size: 11px;
  color: var(--muted);
  padding: 24px 16px 32px;
  line-height: 1.8;
}

.hidden { display: none !important; }