.card { padding: 28px; }
.card h1 { margin-bottom: 4px; }

.segmented {
  display: flex;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 3px;
  margin-bottom: 22px;
}
.segmented button {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 600;
  padding: 8px 10px;
  border-radius: 7px;
  cursor: pointer;
}
.segmented button.active {
  background: var(--accent);
  color: #fff;
}

.rows { display: flex; flex-direction: column; gap: 10px; }
.unit-row {
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 10px 14px;
}
.unit-row:focus-within { border-color: var(--accent); }
.unit-label { width: 88px; flex-shrink: 0; }
.unit-name { display: block; font-size: 14px; font-weight: 600; }
.unit-hint { display: block; font-size: 11.5px; color: var(--text-secondary); }
.unit-row input {
  flex: 1;
  min-width: 0;
  font-family: var(--mono);
  font-size: 15px;
  text-align: right;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
}

.ref {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.ref strong { color: var(--text); }