.guideline-source {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  margin-top: 14px;
  padding: 17px 18px;
  border: 1px solid rgba(21, 91, 92, .18);
  border-radius: 16px;
  background: rgba(255, 255, 255, .82);
  box-shadow: 0 12px 28px rgba(18, 50, 74, .06);
}

.source-seal {
  width: 39px;
  height: 39px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: #155b5c;
  font-size: 15px;
  font-weight: 900;
  box-shadow: 0 8px 18px rgba(21, 91, 92, .2);
}

.source-copy small,
.source-copy strong {
  display: block;
}

.source-copy small {
  margin-bottom: 3px;
  color: #64817f;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .09em;
}

.source-copy strong {
  color: #12324a;
  font-size: 13px;
  line-height: 1.5;
}

.source-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 13px;
  border: 1px solid #b8d8d5;
  border-radius: 999px;
  color: #155b5c;
  background: #f4fbfa;
  font-size: 11px;
  font-weight: 900;
  white-space: nowrap;
  transition: transform .2s ease, color .2s ease, background .2s ease;
}

.source-link:hover,
.source-link:focus-visible {
  color: #fff;
  background: #155b5c;
  transform: translateY(-2px);
}

@media (max-width: 640px) {
  .guideline-source {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .source-link {
    grid-column: 1 / -1;
    width: 100%;
  }
}