:root {
  --bg: #0d1117;
  --panel: #161b22;
  --ink: #e6edf3;
  --muted: #8b949e;
  --accent: #d9b44a;
  --line: #30363d;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 2.5rem 1.25rem 4rem; }
.masthead { text-align: center; margin-bottom: 2rem; }
h1 { font-size: 2.6rem; margin: 0 0 .25rem; letter-spacing: .04em; }
.tag { color: var(--accent); font-style: italic; margin: 0; }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}
.card h2 { margin-top: 0; font-size: 1.25rem; }
.muted { color: var(--muted); margin-top: -.25rem; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .85rem; word-break: break-all; }
.receipt-grid { display: grid; grid-template-columns: max-content 1fr; gap: .4rem 1rem; margin: 1rem 0 0; }
.receipt-grid dt { color: var(--muted); }
.receipt-grid dd { margin: 0; }
.row { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: .5rem; }
input[type="text"] {
  flex: 1 1 240px;
  background: #0d1117;
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: 8px;
  padding: .55rem .7rem;
}
button {
  background: var(--accent);
  color: #1a1408;
  border: 0;
  border-radius: 8px;
  padding: .55rem 1rem;
  font-weight: 600;
  cursor: pointer;
}
button:hover { filter: brightness(1.08); }
.status { color: var(--muted); min-height: 1.2em; margin: .5rem 0 0; }
.wallet-summary { display: flex; gap: 1.5rem; margin-top: 1rem; flex-wrap: wrap; }
.wallet-summary span { color: var(--muted); }
.wallet-summary strong { color: var(--ink); font-size: 1.2rem; }
#map { width: 100%; height: auto; margin-top: .5rem; }
.map-node { fill: var(--accent); }
.map-link { stroke: var(--line); stroke-width: 1.5; }
.map-label { fill: var(--muted); font-size: 11px; font-family: ui-monospace, monospace; }
.foot { color: var(--muted); font-size: .85rem; text-align: center; margin-top: 2rem; }
.foot a { color: var(--accent); }