.source-report {
  display: grid;
  gap: 12px;
  margin: 18px 0;
}

.source-section {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
}

.source-section summary {
  display: grid;
  grid-template-columns: 42px 1fr 24px;
  gap: 12px;
  align-items: center;
  padding: 17px;
  list-style: none;
  cursor: pointer;
}

.source-section summary::-webkit-details-marker { display: none; }
.source-section summary::after {
  content: "+";
  color: var(--gold);
  font-size: 24px;
  text-align: center;
}
.source-section[open] summary::after { content: "−"; }

.source-index {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 12px;
  background: var(--gold-soft);
  color: #835817;
  font-weight: 900;
}

.source-title {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.source-title b { font-family: Georgia, serif; font-size: 17px; }
.source-title small { color: var(--muted); }

.source-body {
  padding: 18px;
  border-top: 1px solid var(--line);
  color: #46534f;
  line-height: 1.68;
  white-space: pre-line;
}

.source-citation {
  display: block;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.source-empty {
  padding: 16px;
  border: 1px solid #edc4ba;
  border-radius: 16px;
  background: #fff3ef;
  color: #88483f;
  line-height: 1.5;
}