.calculator-wrap { --wrap: 72rem; }
.calculator-intro { max-width: 50rem; margin-bottom: 1.3rem; }
.calculator-intro .eyebrow {
  margin: 0 0 0.25rem;
  color: var(--accent);
  font: 700 0.72rem/1.3 var(--ui);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.calculator-layout { display: grid; gap: 1rem; align-items: start; }
@media (min-width: 58rem) { .calculator-layout { grid-template-columns: minmax(18rem, 24rem) minmax(0, 1fr); } }
.calculator-controls,
.calculator-results,
.tool-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card);
}
.calculator-controls { padding: 1rem; font-family: var(--ui); }
.calculator-controls fieldset { min-width: 0; margin: 0; padding: 0 0 1rem; border: 0; }
.calculator-controls legend { margin-bottom: 0.7rem; color: var(--ink); font: 650 1rem/1.3 var(--ui); }
.calculator-controls label { display: block; margin-top: 0.65rem; color: var(--ink-soft); font: 600 0.78rem/1.35 var(--ui); }
.calculator-controls label:first-of-type { margin-top: 0; }
.calculator-controls input,
.calculator-controls select {
  display: block;
  width: 100%;
  min-height: 44px;
  margin-top: 0.28rem;
  padding: 0.55rem 0.62rem;
  border: 1px solid #3a4352;
  border-radius: 8px;
  background: #0d1118;
  color: var(--ink);
  font: 600 0.96rem/1.2 var(--data);
}
.calculator-controls input[aria-invalid="true"] { border-color: var(--bad); }
.field-hint { display: block; margin-top: 0.2rem; color: var(--ink-soft); font: 400 0.72rem/1.4 var(--ui); }
.calculator-results { padding: 1rem; }
.calculator-results h2 { margin-top: 0; }
.calculator-result-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.65rem; }
@media (max-width: 28rem) { .calculator-result-grid { grid-template-columns: minmax(0, 1fr); } }
@media (min-width: 70rem) { .calculator-result-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.calculator-result-grid article { min-width: 0; padding: 0.85rem; border: 1px solid var(--line); border-radius: 10px; background: #10141b; }
.calculator-result-grid span,
.calculator-result-grid strong,
.calculator-result-grid small { display: block; }
.calculator-result-grid span { color: var(--ink-soft); font: 0.73rem/1.3 var(--ui); }
.calculator-result-grid strong { margin-top: 0.22rem; overflow-wrap: anywhere; font: 650 1.12rem/1.25 var(--data); font-variant-numeric: tabular-nums; }
.calculator-result-grid small { margin-top: 0.25rem; color: var(--ink-soft); font: 0.72rem/1.4 var(--ui); }
.calculator-note { margin: 0.85rem 0 0; padding: 0.8rem; border-left: 3px solid var(--accent); background: #111720; color: var(--ink-soft); font: 0.82rem/1.5 var(--ui); }
.calculator-note[data-level="error"] { border-color: var(--bad); color: var(--bad); }
.formula-note { margin-top: 1rem; font-family: var(--ui); }
.formula-note summary { min-height: 44px; cursor: pointer; color: var(--accent); }
.formula-note p,
.formula-note li { color: var(--ink-soft); font-size: 0.82rem; }
.tool-grid { display: grid; gap: 0.8rem; margin: 1.2rem 0; }
@media (min-width: 44rem) { .tool-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.tool-card { display: flex; flex-direction: column; padding: 1rem; }
.tool-card h2 { margin: 0; font-size: 1.15rem; }
.tool-card p { flex: 1; color: var(--ink-soft); }
.tool-card a { align-self: flex-start; }