.mrc-calculator {
  --mrc-navy: #102a43;
  --mrc-navy-light: #1f4f78;
  --mrc-gold: #c59b45;
  --mrc-bg: #f5f8fb;
  --mrc-border: #d8e1ea;
  --mrc-error: #b42318;
  box-sizing: border-box;
  max-width: 960px;
  margin: 2rem auto;
  padding: clamp(1rem, 3vw, 2rem);
  color: #172b3a;
  background: #fff;
  border: 1px solid var(--mrc-border);
  border-radius: 24px;
  box-shadow: 0 18px 50px rgba(16, 42, 67, 0.12);
}

.mrc-calculator *,
.mrc-calculator *::before,
.mrc-calculator *::after { box-sizing: inherit; }
.mrc-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.mrc-field { min-width: 0; margin: 0; padding: 1rem; border: 1px solid var(--mrc-border); border-radius: 16px; background: var(--mrc-bg); }
.mrc-field legend { padding: 0 0.4rem; color: var(--mrc-navy); font-weight: 700; }
.mrc-choices { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.65rem; }
.mrc-choice { position: relative; display: block; cursor: pointer; }
.mrc-choice input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.mrc-choice span { display: flex; align-items: center; justify-content: center; min-height: 48px; padding: 0.65rem 0.75rem; text-align: center; background: #fff; border: 1px solid var(--mrc-border); border-radius: 12px; transition: border-color 160ms ease, background-color 160ms ease, transform 160ms ease; }
.mrc-choice input:checked + span { color: #fff; background: var(--mrc-navy); border-color: var(--mrc-gold); box-shadow: inset 0 0 0 2px var(--mrc-gold); }
.mrc-choice input:focus-visible + span { outline: 3px solid rgba(197, 155, 69, 0.45); outline-offset: 3px; }
.mrc-field[data-mrc-locked="true"] { opacity: 0.58; }
.mrc-error { min-height: 1.5em; margin: 0.5rem 0 0; color: var(--mrc-error); font-size: 0.875rem; }
.mrc-submit { grid-column: 1 / -1; min-height: 54px; color: #fff; font: inherit; font-weight: 700; background: linear-gradient(135deg, var(--mrc-navy), var(--mrc-navy-light)); border: 0; border-radius: 14px; box-shadow: 0 10px 24px rgba(16, 42, 67, 0.24); cursor: pointer; }
.mrc-submit:focus-visible { outline: 3px solid var(--mrc-gold); outline-offset: 3px; }
.mrc-results { margin-top: 2rem; padding: 1.25rem; background: var(--mrc-bg); border: 1px solid var(--mrc-border); border-radius: 18px; }
.mrc-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.65rem; margin: 0 0 1rem; }
.mrc-summary div { padding: 0.75rem; background: #fff; border-radius: 10px; }
.mrc-summary dt { color: #526675; font-size: 0.8rem; }
.mrc-summary dd { margin: 0.2rem 0 0; font-weight: 700; }
.mrc-result-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.75rem; }
.mrc-result-card { min-width: 0; padding: 1rem; background: #fff; border: 1px solid var(--mrc-border); border-radius: 14px; }
.mrc-result-card h4, .mrc-result-card p { margin: 0; }
.mrc-result-card p { margin-top: 0.5rem; overflow-wrap: anywhere; color: var(--mrc-navy); font-weight: 800; }
.mrc-result-card--featured { color: #fff; background: var(--mrc-navy); border-color: var(--mrc-gold); }
.mrc-result-card--featured p { color: #fff; font-size: 1.1em; }
.mrc-general-error, .mrc-frequency-note { color: var(--mrc-error); font-weight: 700; }
.mrc-disclaimer, .mrc-noscript { margin: 1rem 0 0; color: #526675; font-size: 0.875rem; }

@media (max-width: 720px) {
  .mrc-form, .mrc-result-grid { grid-template-columns: 1fr; }
  .mrc-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 420px) { .mrc-choices, .mrc-summary { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .mrc-calculator * { scroll-behavior: auto !important; transition: none !important; } }