.payback-section {
  overflow: hidden;
  background: #fff;
}

.payback-section.section-shell {
  padding-block: clamp(40px, 3vw, 54px);
}

.payback-calculator {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(560px, 1.06fr);
  align-items: stretch;
  gap: clamp(36px, 3.8vw, 72px);
}

.payback-calculator__controls {
  min-width: 0;
  padding-block: 0;
}

.payback-calculator__controls h2 {
  max-width: 760px;
  font-size: clamp(42px, 3vw, 54px);
  line-height: 1.02;
}

.payback-range {
  max-width: 700px;
  margin-top: 28px;
}

.payback-range + .payback-range {
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--line, #d7dadd);
}

.payback-range__heading {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.payback-range__label,
.payback-price-field__label {
  color: var(--ink, #0a0b0c);
  font-size: clamp(17px, 1.16vw, 20px);
  font-weight: 500;
  line-height: 1.35;
}

.payback-range__value {
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: var(--blue, #168fc7);
  line-height: 1;
}

.payback-range__value strong {
  font-size: clamp(32px, 2.45vw, 42px);
  font-weight: 660;
  letter-spacing: -0.045em;
}

.payback-range__value span {
  font-size: clamp(17px, 1.2vw, 21px);
  font-weight: 530;
}

.payback-range__control {
  display: block;
  margin-top: 8px;
}

.payback-range input[type="range"] {
  --range-progress: 0%;
  width: 100%;
  height: 44px;
  display: block;
  margin: 0;
  padding: 0;
  background: transparent;
  appearance: none;
  cursor: pointer;
}

.payback-range input[type="range"]::-webkit-slider-runnable-track {
  height: 4px;
  background: linear-gradient(
    to right,
    var(--blue, #168fc7) 0,
    var(--blue, #168fc7) var(--range-progress),
    #d9dcde var(--range-progress),
    #d9dcde 100%
  );
  border-radius: 999px;
}

.payback-range input[type="range"]::-moz-range-track {
  height: 4px;
  background: linear-gradient(
    to right,
    var(--blue, #168fc7) 0,
    var(--blue, #168fc7) var(--range-progress),
    #d9dcde var(--range-progress),
    #d9dcde 100%
  );
  border: 0;
  border-radius: 999px;
}

.payback-range input[type="range"]::-webkit-slider-thumb {
  width: 28px;
  height: 28px;
  margin-top: -12px;
  background: var(--blue, #168fc7);
  border: 6px solid #fff;
  border-radius: 50%;
  box-shadow: 0 1px 7px rgba(18, 38, 48, 0.22);
  appearance: none;
}

.payback-range input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--blue, #168fc7);
  border: 6px solid #fff;
  border-radius: 50%;
  box-shadow: 0 1px 7px rgba(18, 38, 48, 0.22);
}

.payback-range input[type="range"]:focus-visible {
  outline: 3px solid #076893;
  outline-offset: 3px;
  border-radius: 999px;
}

.payback-range__limits {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: -7px;
  color: #4e5459;
  font-size: 14px;
  line-height: 1.35;
}

.payback-prices {
  max-width: 620px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--line, #d7dadd);
}

.payback-price-field {
  display: grid;
  gap: 8px;
}

.payback-number {
  min-width: 0;
  min-height: 62px;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto 44px;
  align-items: center;
  overflow: hidden;
  background: #fff;
  border: 1px solid #cfd3d5;
  border-radius: 11px;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.payback-number:focus-within {
  border-color: var(--blue, #168fc7);
  box-shadow: 0 0 0 3px rgba(22, 143, 199, 0.14);
}

.payback-number input {
  grid-column: 2;
  grid-row: 1;
  min-width: 0;
  width: 100%;
  height: 60px;
  padding: 0 0 0 12px;
  color: var(--ink, #0a0b0c);
  background: transparent;
  border: 0;
  outline: 0;
  font: inherit;
  font-size: clamp(22px, 1.7vw, 29px);
  font-weight: 620;
  letter-spacing: -0.035em;
  appearance: textfield;
}

.payback-number input::-webkit-inner-spin-button,
.payback-number input::-webkit-outer-spin-button {
  margin: 0;
  appearance: none;
}

.payback-number input[aria-invalid="true"] {
  color: #a13939;
}

.payback-number__unit {
  grid-column: 3;
  grid-row: 1;
  padding-inline: 6px 10px;
  color: var(--ink, #0a0b0c);
  font-size: clamp(14px, 1vw, 17px);
  white-space: nowrap;
}

.payback-number__stepper {
  display: contents;
}

.payback-number__stepper button {
  min-width: 44px;
  min-height: 44px;
  display: grid;
  place-items: center;
  padding: 0;
  color: var(--ink, #0a0b0c);
  background: #fff;
  border: 0;
  cursor: pointer;
}

.payback-number__stepper button[data-calc-step="up"] {
  grid-column: 4;
  grid-row: 1;
  border-left: 1px solid #d8dbdd;
}

.payback-number__stepper button[data-calc-step="down"] {
  grid-column: 1;
  grid-row: 1;
  border-right: 1px solid #d8dbdd;
}

.payback-number__stepper button:hover {
  color: var(--blue-deep, #0c7fb7);
  background: #f7fbfd;
}

.payback-number__stepper button:focus-visible {
  position: relative;
  z-index: 1;
  outline: 3px solid #076893;
  outline-offset: -4px;
}

.payback-number__stepper button span {
  display: none;
}




.payback-calculator__result {
  min-width: 0;
  min-height: 680px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: clamp(36px, 3.3vw, 54px);
  overflow: hidden;
  background: #ecf4f9;
  border-radius: 18px;
}

.payback-calculator__primary {
  text-align: center;
}

.payback-calculator__primary output {
  display: block;
  color: var(--blue, #168fc7);
  font-size: clamp(70px, 6vw, 104px);
  font-weight: 650;
  letter-spacing: -0.065em;
  line-height: 0.94;
  white-space: nowrap;
}

.payback-calculator__primary p {
  margin: 12px 0 0;
  color: var(--ink, #0a0b0c);
  font-size: clamp(21px, 1.65vw, 28px);
  font-weight: 620;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.payback-calculator__secondary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 26px;
  padding-top: 24px;
  border-top: 1px solid rgba(92, 97, 102, 0.24);
}

.payback-calculator__secondary > div {
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-inline: clamp(18px, 2.4vw, 42px);
}

.payback-calculator__secondary > div + div {
  border-left: 1px solid rgba(92, 97, 102, 0.24);
}

.payback-calculator__secondary output {
  color: var(--blue, #168fc7);
  font-size: clamp(32px, 2.7vw, 46px);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 1;
  white-space: nowrap;
}

.payback-calculator__secondary span {
  margin-top: 7px;
  color: var(--ink, #0a0b0c);
  font-size: clamp(15px, 1vw, 18px);
  line-height: 1.28;
}

.payback-calculator__diagram {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 12px 0 0;
  object-fit: contain;
}

.payback-calculator__submit {
  width: 100%;
  min-height: 64px;
  margin-top: auto;
  font-size: clamp(17px, 1.35vw, 22px);
}

.payback-calculator__submit {
  background: linear-gradient(135deg, var(--blue-deep, #0c7fb7), #20a1da);
}

.payback-calculator__submit:focus-visible {
  outline: 3px solid #076893;
  outline-offset: 4px;
}

@media (max-width: 1160px) {
  .payback-calculator {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .payback-calculator__controls {
    width: min(100%, 900px);
  }

  .payback-calculator__controls h2,
  .payback-range {
    max-width: 820px;
  }

  .payback-prices {
    max-width: 620px;
  }

  .payback-calculator__result {
    min-height: 620px;
  }

  .payback-calculator__primary output {
    font-size: clamp(68px, 9vw, 96px);
  }
}

@media (max-width: 820px) {
  .payback-calculator {
    gap: 26px;
  }

  .payback-calculator__controls h2 {
    font-size: clamp(38px, 7vw, 50px);
  }

  .payback-range {
    margin-top: 26px;
  }

  .payback-calculator__result {
    min-height: 560px;
    padding: 32px 28px 26px;
    border-radius: 16px;
  }

  .payback-calculator__diagram {
    margin: 10px 0 0;
  }
}

@media (max-width: 570px) {
  .payback-calculator {
    gap: 22px;
  }

  .payback-calculator__controls h2 {
    font-size: 36px;
  }

  .payback-range {
    margin-top: 24px;
  }

  .payback-range + .payback-range {
    margin-top: 18px;
    padding-top: 18px;
  }

  .payback-range__value strong {
    font-size: 32px;
  }

  .payback-range__value span {
    font-size: 16px;
  }

  .payback-range__limits {
    font-size: 12px;
  }

  .payback-prices {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
    margin-top: 18px;
    padding-top: 18px;
  }

  .payback-price-field {
    gap: 7px;
  }

  .payback-number {
    grid-template-columns: 48px minmax(0, 1fr) auto 48px;
  }

  .payback-number input {
    padding-left: 14px;
    font-size: 25px;
  }

  .payback-number__unit {
    padding-right: 12px;
    font-size: 16px;
  }

  .payback-calculator__result {
    min-height: 520px;
    padding: 24px 16px 16px;
    border-radius: 14px;
  }

  .payback-calculator__primary output {
    font-size: clamp(50px, 14vw, 64px);
  }

  .payback-calculator__primary p {
    margin-top: 8px;
    font-size: 19px;
  }

  .payback-calculator__secondary {
    margin-top: 18px;
    padding-top: 18px;
  }

  .payback-calculator__secondary > div {
    padding-inline: 12px;
  }

  .payback-calculator__secondary output {
    font-size: clamp(29px, 8vw, 36px);
  }

  .payback-calculator__secondary span {
    margin-top: 6px;
    font-size: 14px;
  }

  .payback-calculator__diagram {
    width: 100%;
    margin: 10px 0 0;
  }

  .payback-calculator__submit {
    min-height: 56px;
    padding-inline: 18px;
    white-space: normal;
  }
}

@media (max-width: 480px) {
  .payback-calculator__secondary {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .payback-calculator__secondary > div {
    align-items: center;
    padding-inline: 0;
    text-align: center;
  }

  .payback-calculator__secondary > div + div {
    padding-top: 12px;
    border-top: 1px solid rgba(92, 97, 102, 0.24);
    border-left: 0;
  }
}

@media (max-width: 380px) {
  .payback-calculator__controls h2 {
    font-size: 34px;
  }

  .payback-number {
    grid-template-columns: 44px minmax(0, 1fr) auto 44px;
  }

  .payback-number input {
    padding-left: 12px;
    font-size: 25px;
  }

  .payback-number__unit {
    padding-inline: 6px 9px;
    font-size: 14px;
  }

  .payback-calculator__primary output {
    font-size: 52px;
  }

}

@media (prefers-reduced-motion: reduce) {
  .payback-number,
  .payback-number__stepper button {
    transition: none;
  }
}