* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f4f6f9;
  color: #1f2933;
  line-height: 1.6;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

header h1 {
  margin: 0 0 6px;
  font-size: 26px;
}

.sub {
  margin: 0 0 24px;
  color: #64748b;
}

.query {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.query label {
  font-weight: 600;
}

.query input {
  flex: 1;
  min-width: 240px;
  padding: 10px 12px;
  font-size: 15px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.query button {
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: #2563eb;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.query button:hover {
  background: #1d4ed8;
}

.query button:disabled {
  background: #94a3b8;
  cursor: not-allowed;
}

.example {
  margin: 10px 0 0;
  font-size: 13px;
  color: #94a3b8;
}

.status {
  margin: 20px 0;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
}

.status.loading {
  background: #eff6ff;
  color: #1d4ed8;
}

.status.error {
  background: #fef2f2;
  color: #b91c1c;
}

.result {
  margin-top: 24px;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 24px;
}

.result h2 {
  margin: 0 0 16px;
  font-size: 18px;
}

.result h3 {
  margin: 24px 0 10px;
  font-size: 15px;
  color: #475569;
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

@media (max-width: 520px) {
  .cards {
    grid-template-columns: 1fr;
  }
}

.card {
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card.primary {
  border-color: #bfdbfe;
  background: #f8fbff;
}

.card .label {
  font-size: 13px;
  color: #64748b;
}

.card .value {
  font-size: 22px;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.detail {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.detail th,
.detail td {
  text-align: left;
  padding: 7px 8px;
  border-bottom: 1px solid #f1f5f9;
}

.detail th {
  color: #64748b;
  font-weight: 500;
  width: 160px;
}

.rf {
  width: 90px;
  padding: 4px 6px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
}

.note {
  margin: 16px 0 0;
  font-size: 13px;
  color: #b45309;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 8px;
  padding: 10px 12px;
}

footer {
  margin-top: 28px;
  font-size: 12px;
  color: #94a3b8;
}

footer p {
  margin: 3px 0;
}