:root {
  --bg: #0f1419;
  --card: #1a2332;
  --text: #e7ecf3;
  --muted: #8b9bb4;
  --primary: #3b82f6;
  --danger: #f87171;
  --ok: #34d399;
  --border: #2d3a4f;
  font-family: "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
.wrap {
  max-width: 520px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}
header h1 { font-size: 1.35rem; margin: 0 0 4px; }
.sub { color: var(--muted); font-size: 0.85rem; margin: 0 0 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 16px;
  margin-bottom: 14px;
}
.card h2 { margin: 0 0 12px; font-size: 1.1rem; }
.bullets { padding-left: 1.2rem; color: var(--muted); line-height: 1.55; }
.btn {
  border: 1px solid var(--border);
  background: #243044;
  color: var(--text);
  border-radius: 8px;
  padding: 10px 14px;
  cursor: pointer;
  font-size: 0.95rem;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn.primary {
  background: var(--primary);
  border-color: transparent;
  width: 100%;
  margin-top: 12px;
  font-weight: 600;
}
.row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.row .btn.primary { width: auto; margin-top: 0; flex: 1; }
.hidden { display: none !important; }
.err {
  background: #3f1d1d;
  border: 1px solid var(--danger);
  color: #fecaca;
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 12px;
}
.warn { color: #fbbf24; font-size: 0.85rem; }
.hint { color: var(--muted); font-size: 0.82rem; line-height: 1.45; margin: 8px 0 0; }
.mock-banner {
  background: #422006;
  border: 1px solid #f59e0b;
  color: #fde68a;
  padding: 12px 14px;
  border-radius: 8px;
  margin-bottom: 12px;
  font-size: 0.9rem;
  line-height: 1.45;
}
.wallet-status {
  background: #121a26;
  border-radius: 8px;
  padding: 12px;
  font-size: 0.9rem;
  color: var(--muted);
}
.kv {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 8px 10px;
  font-size: 0.9rem;
}
.kv dt { color: var(--muted); }
.kv dd { margin: 0; word-break: break-all; }
.log {
  margin-top: 12px;
  background: #0b1018;
  border-radius: 8px;
  padding: 10px;
  font-size: 0.75rem;
  max-height: 160px;
  overflow: auto;
  color: var(--ok);
  white-space: pre-wrap;
}
.extra {
  min-height: 8px;
  margin: 8px 0;
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 8px;
  color: var(--muted);
  font-size: 0.8rem;
}
.extra:empty::before { content: "（预留 extra 字段区域）"; }
.meta { margin-top: 10px; font-size: 0.85rem; color: var(--muted); }