.mfr-calculator {
  --mfr-border: #d7dce2;
  --mfr-muted: #5f6875;
  --mfr-surface: #f5f7f9;
  --mfr-positive: #176b3a;
  --mfr-negative: #a12828;
  max-width: 960px;
  margin: 1.5rem auto;
  padding: clamp(1rem, 3vw, 1.75rem);
  border: 1px solid var(--mfr-border);
  border-radius: 16px;
  background: #fff;
  color: #1e2732;
  box-sizing: border-box;
  font: inherit;
}
.mfr-calculator *, .mfr-calculator *::before, .mfr-calculator *::after { box-sizing: border-box; }
.mfr-calculator h2 { margin: 0 0 .4rem; font-size: clamp(1.45rem, 3vw, 1.9rem); line-height: 1.25; }
.mfr-calculator h3 { margin: 0 0 1rem; font-size: 1.12rem; }
.mfr-header { margin-bottom: 1.5rem; }
.mfr-header p, .mfr-note { color: var(--mfr-muted); line-height: 1.55; }
.mfr-section { padding: 1.25rem 0; border-top: 1px solid var(--mfr-border); }
.mfr-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.mfr-field { min-width: 0; display: flex; flex-direction: column; gap: .45rem; }
.mfr-field label, .mfr-mode legend { font-weight: 600; line-height: 1.4; }
.mfr-field input[type="number"] {
  display: block; width: 100%; min-height: 44px; padding: .65rem .75rem;
  border: 1px solid #aeb7c2; border-radius: 8px; background: #fff; color: inherit; font: inherit;
}
.mfr-field input[type="range"] { width: 100%; accent-color: #255d91; cursor: pointer; }
.mfr-range-value { font-weight: 700; font-variant-numeric: tabular-nums; }
.mfr-range-labels { display: flex; justify-content: space-between; color: var(--mfr-muted); font-size: .8rem; }
.mfr-mode { margin: 0 0 1rem; padding: .85rem 1rem; border: 1px solid var(--mfr-border); border-radius: 10px; }
.mfr-mode label { display: flex; align-items: flex-start; gap: .55rem; margin-top: .65rem; line-height: 1.45; }
.mfr-mode input { margin-top: .2rem; }
.mfr-results { padding: 1.25rem; border-radius: 12px; background: var(--mfr-surface); }
.mfr-result-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem; }
.mfr-result { min-width: 0; display: flex; flex-direction: column; gap: .45rem; padding: .85rem; border: 1px solid var(--mfr-border); border-radius: 9px; background: #fff; }
.mfr-result span { color: var(--mfr-muted); font-size: .88rem; line-height: 1.4; }
.mfr-result strong { font-size: clamp(1rem, 2vw, 1.3rem); overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.mfr-highlight { border-width: 2px; }
.mfr-positive { color: var(--mfr-positive) !important; }
.mfr-negative { color: var(--mfr-negative) !important; }
.mfr-status { margin: 1rem 0 0; font-weight: 600; line-height: 1.5; }
.mfr-actions { display: flex; align-items: center; flex-wrap: wrap; gap: .8rem; margin-top: 1rem; }
.mfr-copy { min-height: 44px; padding: .65rem 1rem; border: 1px solid #255d91; border-radius: 8px; background: #fff; color: #255d91; font: inherit; font-weight: 600; cursor: pointer; }
.mfr-copy:hover, .mfr-copy:focus-visible { background: #eef5fb; }
.mfr-copy-status { color: var(--mfr-muted); font-size: .9rem; }
.mfr-note { margin: 1.25rem 0 0; font-size: .82rem; }
.mfr-calculator [hidden] { display: none !important; }
@media (max-width: 620px) {
  .mfr-grid, .mfr-result-grid { grid-template-columns: minmax(0, 1fr); }
  .mfr-calculator { border-radius: 10px; }
}