.calculator-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.35fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: end;
  width: min(100% - 3rem, var(--layout-max));
  margin: 0 auto;
  padding: var(--section-space) 0;
}

.calculator-hero h1 {
  max-width: 11ch;
  margin: 0;
  font-size: var(--type-display);
  font-weight: 800;
  letter-spacing: -0.07em;
  line-height: 0.9;
}

.calculator-hero p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.55;
}

.calculator-tool {
  display: grid;
  grid-template-columns: minmax(18rem, 0.65fr) minmax(0, 1.35fr);
  width: min(100% - 3rem, var(--layout-max));
  margin: 0 auto var(--section-space);
  background: var(--color-ink);
  color: var(--color-paper);
}

.calculator-control {
  display: grid;
  align-content: start;
  min-width: 0;
  padding: clamp(2rem, 4vw, 4rem);
}

.calculator-control h2 {
  max-width: 10ch;
  margin: 0;
  font-size: clamp(2rem, 3.4vw, 3.4rem);
  letter-spacing: -0.06em;
  line-height: 0.95;
}

.calculator-control output {
  display: block;
  margin: var(--space-7) 0 var(--space-5);
  color: var(--color-success);
  font-size: clamp(5.5rem, 10vw, 9rem);
  font-weight: 900;
  letter-spacing: -0.1em;
  line-height: 0.7;
}

.calculator-control input {
  width: 100%;
  height: 2rem;
  margin: 0;
  appearance: none;
  background: transparent;
  cursor: pointer;
}

.calculator-control input::-webkit-slider-runnable-track {
  height: 4px;
  background: var(--color-paper);
}

.calculator-control input::-moz-range-track {
  height: 4px;
  background: var(--color-paper);
}

.calculator-control input::-webkit-slider-thumb {
  width: 1.5rem;
  height: 1.5rem;
  margin-top: -0.63rem;
  border: 0;
  appearance: none;
  background: var(--color-success);
}

.calculator-control input::-moz-range-thumb {
  width: 1.5rem;
  height: 1.5rem;
  border: 0;
  background: var(--color-success);
}

.range-labels {
  display: flex;
  justify-content: space-between;
  color: #b7bbb7;
  font-size: 0.75rem;
}

.calculator-results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-width: 0;
  background: var(--color-ink);
  color: var(--color-paper);
}

.calculator-results article {
  display: grid;
  align-content: space-between;
  min-width: 0;
  padding: clamp(1.5rem, 3.5vw, 3.5rem);
}

.calculator-results article + article {
  border-left: 1px solid var(--color-success);
}

.calculator-results h3 {
  margin: 0 0 var(--space-7);
  font-size: clamp(1.5rem, 2.5vw, 2.35rem);
  letter-spacing: -0.05em;
}

.calculator-results dl,
.calculator-results dl div {
  margin: 0;
}

.calculator-results dl div {
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  padding: 0.9rem 0;
  border-top: 1px solid var(--color-success);
}

.calculator-results dt,
.calculator-results dd {
  margin: 0;
  font-size: 0.82rem;
}

.calculator-results dd {
  color: var(--color-success);
  font-weight: 800;
  text-align: right;
}

.calculator-chart {
  grid-column: 1 / -1;
  margin: 0;
  padding: clamp(2rem, 4vw, 4rem);
}

.calculator-chart figcaption {
  margin-bottom: var(--space-4);
  font-size: 0.82rem;
  font-weight: 800;
}

.calculator-chart > div {
  position: relative;
  height: 22rem;
}

.calculator-summary,
.calculator-note {
  grid-column: 1 / -1;
  margin: 0;
  padding: 0 clamp(2rem, 5vw, 5rem) var(--space-5);
}

.calculator-summary {
  max-width: 54rem;
  color: var(--color-success);
  font-size: clamp(1.25rem, 2.6vw, 2.2rem);
  font-weight: 700;
  line-height: 1.3;
}

.calculator-note {
  color: #b7bbb7;
  font-size: 0.75rem;
  line-height: 1.55;
}

@media (max-width: 880px) {
  .calculator-hero,
  .calculator-tool {
    grid-template-columns: 1fr;
    width: min(100% - 2rem, var(--layout-max));
  }

  .calculator-control output {
    margin-top: var(--space-5);
  }

  .calculator-results {
    border-top: 1px solid var(--color-success);
  }

  .calculator-hero {
    padding: var(--section-space-tablet) 0;
  }

  .calculator-tool {
    margin-bottom: var(--section-space-tablet);
  }
}

@media (max-width: 600px) {
  .calculator-hero {
    gap: var(--space-4);
    padding: var(--section-space-mobile) 0;
  }

  .calculator-hero h1 {
    font-size: clamp(3rem, 15vw, 5rem);
  }

  .calculator-tool {
    margin-bottom: var(--section-space-mobile);
  }

  .calculator-control {
    padding: var(--space-5);
  }

  .calculator-results {
    grid-template-columns: 1fr;
  }

  .calculator-results article + article {
    border-top: 1px solid var(--color-success);
    border-left: 0;
  }

  .calculator-results h3 {
    margin-bottom: var(--space-5);
  }

  .calculator-chart {
    padding: var(--space-5);
  }

  .calculator-chart > div {
    height: 21rem;
  }

  .calculator-summary,
  .calculator-note {
    padding-right: var(--space-5);
    padding-left: var(--space-5);
  }
}