.calculator-hero {
  padding: 170px 0 106px;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.calculator-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, .58fr);
  gap: clamp(56px, 10vw, 150px);
  align-items: end;
}
.calculator-hero-grid > *,
.calculator-intro-grid > *,
.calculator-demo-heading > *,
.calculator-workbench > *,
.calculator-uses-head > * { min-width: 0; }

.calculator-kicker {
  color: var(--zinc-500);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.calculator-hero-copy .calculator-kicker { margin: 28px 0 14px; }

.calculator-hero h1 {
  max-width: 12ch;
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 7.4vw, 7.2rem);
  font-weight: 500;
  line-height: .98;
}

.calculator-hero-lead {
  max-width: 61ch;
  margin: 28px 0 32px;
  color: var(--zinc-300);
  font-size: clamp(1.04rem, 1.7vw, 1.22rem);
}

.calculator-hero-proof {
  padding: 0 0 10px 28px;
  border-left: 1px solid var(--line-2);
}

.calculator-hero-proof > span {
  color: var(--zinc-500);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.calculator-hero-proof > strong {
  display: block;
  margin: 8px 0 28px;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5vw, 5rem);
  font-weight: 500;
  line-height: 1;
}

.hero-proof-line {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  color: var(--zinc-400);
  font-size: .9rem;
}

.hero-proof-line b { color: var(--white); font-weight: 500; }

.calculator-intro { border-bottom: 1px solid var(--line); }
.calculator-intro-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(46px, 8vw, 120px); }
.calculator-intro h2,
.calculator-demo-heading h2,
.calculator-uses h2 {
  max-width: 14ch;
  margin-top: 12px;
  font-family: var(--font-display);
  font-size: clamp(2.35rem, 4.8vw, 4.8rem);
  line-height: 1.04;
  font-weight: 500;
}
.calculator-intro-copy { display: grid; gap: 18px; align-content: end; color: var(--zinc-300); font-size: 1.05rem; max-width: 66ch; }

.calculator-demo-section { padding: 104px 0 116px; border-bottom: 1px solid var(--line); }
.calculator-demo-heading,
.calculator-uses-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .62fr);
  gap: 48px;
  align-items: end;
  margin-bottom: 48px;
}
.calculator-demo-heading > p,
.calculator-uses-head > p { color: var(--zinc-400); max-width: 52ch; }

.calculator-tabs {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  border-bottom: 1px solid var(--line-2);
}
.calculator-tabs::-webkit-scrollbar { display: none; }
.calculator-tab {
  position: relative;
  flex: 1 0 auto;
  min-height: 54px;
  padding: 0 28px;
  border: 0;
  background: transparent;
  color: var(--zinc-500);
  font: 500 .92rem var(--font);
  cursor: pointer;
}
.calculator-tab::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: transparent;
}
.calculator-tab:hover { color: var(--zinc-300); }
.calculator-tab.is-active { color: var(--white); }
.calculator-tab.is-active::after { background: var(--white); }

.calculator-workbench {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(360px, .68fr);
  border: 1px solid var(--line-2);
  border-top: 0;
  background: #0c0c0f;
}
.calculator-controls { padding: clamp(28px, 4vw, 54px); }
.calculator-control-block { padding-bottom: 34px; margin-bottom: 34px; border-bottom: 1px solid var(--line); }
.calculator-control-head { display: flex; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
.calculator-control-head label,
.calculator-options legend,
.calculator-custom legend { font-weight: 600; color: var(--white); }
.calculator-control-head output { color: var(--zinc-300); font-variant-numeric: tabular-nums; }

.calculator-controls input[type="range"] {
  width: 100%;
  height: 24px;
  margin: 0;
  appearance: none;
  background: transparent;
  cursor: pointer;
}
.calculator-controls input[type="range"]::-webkit-slider-runnable-track { height: 3px; background: var(--zinc-700); }
.calculator-controls input[type="range"]::-webkit-slider-thumb {
  width: 20px;
  height: 20px;
  margin-top: -8.5px;
  appearance: none;
  border: 5px solid var(--white);
  border-radius: 50%;
  background: var(--bg);
}
.calculator-controls input[type="range"]::-moz-range-track { height: 3px; background: var(--zinc-700); }
.calculator-controls input[type="range"]::-moz-range-thumb { width: 10px; height: 10px; border: 5px solid var(--white); border-radius: 50%; background: var(--bg); }
.calculator-controls input[type="range"]:focus-visible { outline: 2px solid var(--white); outline-offset: 4px; }
.range-bounds { display: flex; justify-content: space-between; color: var(--zinc-600); font-size: .75rem; }
.calculator-field-note { margin-top: 9px; color: var(--zinc-500); font-size: .82rem; }

.calculator-options,
.calculator-custom { margin: 0; padding: 0; border: 0; }
.calculator-options legend,
.calculator-custom legend { margin-bottom: 4px; }
.calculator-option {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  min-height: 60px;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}
.calculator-option:first-child { margin-top: 18px; border-top: 1px solid var(--line); }
.calculator-option input { position: absolute; opacity: 0; pointer-events: none; }
.calculator-check {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border: 1px solid var(--zinc-600);
  border-radius: 4px;
  color: transparent;
  font-size: .72rem;
}
.calculator-option input:checked + .calculator-check { border-color: var(--white); background: var(--white); color: var(--bg); }
.calculator-option input:focus-visible + .calculator-check { outline: 2px solid var(--white); outline-offset: 3px; }
.calculator-option-name { color: var(--zinc-300); }
.calculator-option-price { color: var(--zinc-500); font-size: .88rem; font-variant-numeric: tabular-nums; }

.calculator-custom { margin-top: 36px; padding-top: 30px; border-top: 1px solid var(--line); }
.custom-fields-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 18px; }
.custom-fields-grid label { color: var(--zinc-400); font-size: .82rem; }
.custom-fields-grid label > span {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 7px;
  padding: 0 12px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  background: var(--bg);
  color: var(--zinc-500);
}
.custom-fields-grid input {
  width: 100%;
  min-height: 44px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--white);
  font: inherit;
}
.custom-fields-grid label > span:focus-within { outline: 2px solid var(--white); outline-offset: 2px; }

.calculator-receipt {
  position: relative;
  padding: clamp(28px, 4vw, 48px);
  border-top: 1px solid var(--white);
  border-left: 1px solid var(--line-2);
  background: var(--bg);
}
.receipt-head { display: flex; justify-content: space-between; gap: 18px; align-items: start; padding-bottom: 26px; border-bottom: 1px solid var(--line-2); }
.receipt-head span { color: var(--zinc-500); font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; }
.receipt-head h3 { margin-top: 4px; font-size: 1.75rem; font-weight: 500; }
.receipt-status { padding: 5px 9px; border: 1px solid var(--zinc-700); border-radius: 999px; color: var(--zinc-300) !important; }
.receipt-line,
.receipt-discount { display: flex; justify-content: space-between; gap: 18px; padding: 14px 0; border-bottom: 1px solid var(--line); color: var(--zinc-400); font-size: .9rem; }
.receipt-line strong,
.receipt-discount strong { color: var(--zinc-300); font-weight: 500; font-variant-numeric: tabular-nums; text-align: right; }
.receipt-discount { color: var(--white); }
.receipt-discount strong { color: var(--white); }
.receipt-discount[hidden] { display: none; }
.receipt-total { margin-top: 34px; }
.receipt-total span { color: var(--zinc-500); font-size: .8rem; }
.receipt-total strong {
  display: block;
  margin-top: 4px;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5vw, 4.8rem);
  font-weight: 500;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.receipt-caveat { margin: 18px 0 28px; color: var(--zinc-500); font-size: .9rem; line-height: 1.55; }
.calculator-receipt .btn { width: 100%; justify-content: space-between; font-size: .95rem; white-space: normal; }
.receipt-flexibility { margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--line-2); }
.receipt-flexibility h4 { color: var(--white); font-size: 1.15rem; font-weight: 600; }
.receipt-flexibility p { max-width: 42ch; margin-top: 12px; color: var(--zinc-300); font-size: 1rem; line-height: 1.7; }

.calculator-uses-head { margin-bottom: 44px; }
.calculator-use-list { border-top: 1px solid var(--line-2); }
.calculator-use-list article {
  display: grid;
  grid-template-columns: minmax(180px, .4fr) minmax(0, 1fr);
  gap: 36px;
  align-items: baseline;
  padding: 28px 0;
  border-bottom: 1px solid var(--line-2);
}
.calculator-use-list h3 { font-size: 1.35rem; font-weight: 500; }
.calculator-use-list p { color: var(--zinc-400); max-width: 58ch; }

@media (max-width: 1000px) {
  .calculator-hero-grid { grid-template-columns: 1fr; gap: 54px; }
  .calculator-hero-proof { max-width: 620px; }
  .calculator-workbench { grid-template-columns: 1fr; }
  .calculator-receipt { border-top: 1px solid var(--line-2); border-left: 0; }
}

@media (max-width: 760px) {
  .calculator-hero { padding: 140px 0 76px; }
  .calculator-hero h1 { max-width: 100%; font-size: clamp(3rem, 14vw, 5rem); overflow-wrap: break-word; }
  .calculator-intro-grid,
  .calculator-demo-heading,
  .calculator-uses-head { grid-template-columns: 1fr; gap: 28px; }
  .calculator-demo-section { padding: 78px 0; }
  .calculator-tabs { margin-right: calc(-1 * max(24px, env(safe-area-inset-right))); }
  .calculator-tab { padding: 0 20px; }
  .calculator-controls,
  .calculator-receipt { padding: 28px 22px; }
  .calculator-workbench,
  .calculator-controls,
  .calculator-receipt { min-width: 0; width: 100%; }
  .calculator-use-list article { grid-template-columns: 1fr; gap: 10px; }
}

@media (max-width: 520px) {
  .calculator-hero-proof { padding-left: 20px; }
  .custom-fields-grid { grid-template-columns: 1fr; }
  .calculator-option { grid-template-columns: 24px minmax(0, 1fr); }
  .calculator-option-price { grid-column: 2; margin-top: -12px; padding-bottom: 10px; }
  .calculator-control-head { align-items: end; }
  .calculator-control-head label { max-width: 64%; }
  .receipt-total strong { font-size: 2.8rem; }
}