.contract-details {
  border: 1px solid var(--line);
  border-radius: 12px;
  margin: 2px 0 22px;
  background: #fbfcfe;
}
.contract-details > summary {
  display: flex;
  flex-direction: column;
  position: relative;
  cursor: pointer;
  padding: 13px 36px 13px 14px;
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
  list-style: none;
}
.contract-details > summary::-webkit-details-marker { display: none; }
.contract-details > summary::after {
  content: '＋';
  position: absolute;
  right: 14px;
  top: 17px;
  font-size: 16px;
  font-weight: 400;
}
.contract-details[open] > summary::after { content: '−'; }
.contract-details > summary small { font-weight: 400; margin: 1px 0 0; }
.contract-body { padding: 3px 13px 13px; border-top: 1px solid var(--line); }
.check-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 1px;
  border-bottom: 1px solid #edf1f5;
  cursor: pointer;
}
.check-row span { display: block; }
.check-row strong { display: block; font-size: 12px; }
.check-row small { margin: 2px 0 0; }
.check-row input {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  margin: 2px 0 0;
  accent-color: var(--brand);
}
.sub-check { padding-left: 12px; }
.month-input {
  width: 100%;
  border: 1px solid #b7c5d4;
  border-radius: 10px;
  background: white;
  color: var(--ink);
  padding: 12px 10px;
  font-size: 14px;
}
.contract-body > .field,
#five-year-fields > .field,
#bonus-fields > .field { margin: 14px 0; }
.month-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.month-pair .field { margin: 14px 0 0; }