.spine-calculator-page {
  --spine-ink: #303033;
  --spine-muted: #686868;
  --spine-line: #eaded6;
  --spine-paper: #fffbed;
  --spine-accent: #ff7568;
  color: var(--spine-ink);
}

.spine-calculator-page__hero {
  padding: 58px 0 72px;
  background:
    radial-gradient(circle at 84% 20%, rgba(255, 117, 104, .13), transparent 25%),
    linear-gradient(135deg, #fffbed 0%, #fff9ed 62%, #fff4ea 100%);
  border-bottom: 1px solid rgba(48, 48, 51, .07);
}

.spine-calculator-page__hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr);
  align-items: end;
  gap: 72px;
}

.spine-calculator-page__start {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 30px;
  color: var(--spine-ink);
  font-size: 17px;
  font-weight: 700;
  text-decoration: none;
}

.spine-calculator-page__start span {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: #fff;
  background: var(--spine-accent);
  border-radius: 50%;
  transition: transform 160ms cubic-bezier(.23, 1, .32, 1);
}

.spine-calculator-page__start:hover,
.spine-calculator-page__start:focus-visible {
  color: var(--spine-accent);
}

.spine-calculator-page__start:active span {
  transform: scale(.96);
}

.spine-calculator-page__answer {
  padding: 30px;
  background: rgba(255, 255, 255, .78);
  border: 1px solid rgba(255, 117, 104, .3);
  border-radius: 28px 28px 28px 6px;
  box-shadow: 0 18px 48px rgba(60, 45, 39, .06);
}

.spine-calculator-page__answer-label {
  display: block;
  margin-bottom: 14px;
  color: var(--spine-accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.spine-calculator-page__answer strong {
  display: block;
  font-size: 22px;
  line-height: 1.3;
}

.spine-calculator-page__answer p {
  margin: 12px 0 0;
  color: var(--spine-muted);
  font-size: 17px;
  line-height: 1.6;
}

.spine-calculator-page__intro {
  padding: 72px 0 46px;
}

.spine-calculator-page__intro-grid,
.spine-calculator-page__precision-grid,
.spine-calculator-page__faq-grid {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 82px;
}

.spine-calculator-page h2 {
  margin: 0;
  font-size: clamp(34px, 3.4vw, 50px);
  line-height: 1.12;
  letter-spacing: -.025em;
}

.spine-calculator-page__intro-copy p,
.spine-calculator-page__precision p,
.spine-calculator-page__faq-heading > p:last-child {
  margin: 0 0 18px;
  color: var(--spine-muted);
  font-size: 18px;
  line-height: 1.68;
}

.spine-calculator-page__anchor {
  position: relative;
  top: -92px;
}

.spine-calculator-page__workspace {
  padding-top: 30px;
  padding-bottom: 84px;
}

.calculator--spine-page .tab-content {
  min-height: 520px;
}

.calculator--spine-page .tab-pane {
  min-height: 430px;
}

.spine-calculator-page__steps,
.spine-calculator-page__faq {
  padding: 78px 0 86px;
  background: var(--spine-paper);
}

.spine-calculator-page__step-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 38px;
}

.spine-calculator-page__step-grid article {
  padding: 30px;
  background: rgba(255, 255, 255, .72);
  border: 1px solid rgba(255, 117, 104, .23);
  border-radius: 24px 24px 24px 5px;
}

.spine-calculator-page__step-grid span {
  color: var(--spine-accent);
  font-size: 14px;
  font-weight: 700;
}

.spine-calculator-page__step-grid h3 {
  margin: 20px 0 10px;
  font-size: 22px;
}

.spine-calculator-page__step-grid p {
  margin: 0;
  color: var(--spine-muted);
  font-size: 16px;
  line-height: 1.6;
}

.spine-calculator-page__precision {
  padding: 86px 0;
}

.spine-calculator-page__precision aside {
  align-self: start;
  padding: 30px;
  background: #fff7f2;
  border-left: 5px solid var(--spine-accent);
  border-radius: 0 24px 24px 0;
}

.spine-calculator-page__precision aside strong {
  font-size: 21px;
}

.spine-calculator-page__precision ul {
  display: grid;
  gap: 11px;
  margin: 20px 0 26px;
  padding-left: 22px;
  color: var(--spine-muted);
  font-size: 16px;
}

.spine-calculator-page__precision .btn {
  min-width: 220px;
  transition: transform 160ms cubic-bezier(.23, 1, .32, 1);
}

.spine-calculator-page__precision .btn:active {
  transform: scale(.97);
}

.spine-calculator-page__faq-heading {
  align-self: start;
  position: sticky;
  top: 120px;
}

.spine-calculator-page__faq-heading > p:last-child {
  margin-top: 22px;
}

.spine-calculator-page__faq-list {
  border-top: 1px solid var(--spine-line);
}

.spine-calculator-page__faq-list details {
  border-bottom: 1px solid var(--spine-line);
}

.spine-calculator-page__faq-list summary {
  position: relative;
  padding: 24px 48px 24px 0;
  cursor: pointer;
  font-size: 19px;
  font-weight: 700;
  list-style: none;
}

.spine-calculator-page__faq-list summary::-webkit-details-marker {
  display: none;
}

.spine-calculator-page__faq-list summary::after {
  content: '+';
  position: absolute;
  top: 50%;
  right: 6px;
  color: var(--spine-accent);
  font-size: 26px;
  font-weight: 400;
  transform: translateY(-50%);
}

.spine-calculator-page__faq-list details[open] summary::after {
  content: '−';
}

.spine-calculator-page__faq-list details p {
  margin: -4px 48px 24px 0;
  color: var(--spine-muted);
  font-size: 16px;
  line-height: 1.65;
}

.spine-calculator-page__links {
  padding: 84px 0 94px;
}

.spine-calculator-page__links-heading {
  max-width: 720px;
  margin-bottom: 34px;
}

.spine-calculator-page__link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.spine-calculator-page__link-grid a {
  position: relative;
  display: grid;
  gap: 8px;
  min-height: 150px;
  padding: 28px 62px 28px 28px;
  color: var(--spine-ink);
  text-decoration: none;
  border: 1px solid var(--spine-line);
  border-radius: 22px;
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms cubic-bezier(.23, 1, .32, 1);
}

.spine-calculator-page__link-grid a:hover,
.spine-calculator-page__link-grid a:focus-visible {
  color: var(--spine-ink);
  border-color: rgba(255, 117, 104, .62);
  box-shadow: 0 14px 34px rgba(56, 44, 39, .07);
  transform: translateY(-2px);
}

.spine-calculator-page__link-grid a:active {
  transform: scale(.985);
}

.spine-calculator-page__link-grid strong {
  font-size: 22px;
}

.spine-calculator-page__link-grid span {
  color: var(--spine-muted);
  line-height: 1.5;
}

.spine-calculator-page__link-grid i {
  position: absolute;
  top: 28px;
  right: 28px;
  color: var(--spine-accent);
  font-size: 24px;
  font-style: normal;
}

@media (min-width: 992px) and (max-width: 1679px) {
  .spine-calculator-page__hero .container,
  .spine-calculator-page__intro .container,
  .spine-calculator-page__workspace.container,
  .spine-calculator-page__steps .container,
  .spine-calculator-page__precision .container,
  .spine-calculator-page__faq .container,
  .spine-calculator-page__links .container {
    padding-right: 126px;
  }
}

@media (max-width: 991px) {
  .spine-calculator-page__hero-grid,
  .spine-calculator-page__intro-grid,
  .spine-calculator-page__precision-grid,
  .spine-calculator-page__faq-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .spine-calculator-page__answer {
    max-width: 660px;
  }

  .spine-calculator-page__faq-heading {
    position: static;
  }
}

@media (max-width: 767px) {
  .spine-calculator-page__hero {
    padding: 26px 0 42px;
  }

  .spine-calculator-page__intro,
  .spine-calculator-page__precision,
  .spine-calculator-page__links {
    padding: 54px 0;
  }

  .spine-calculator-page__workspace {
    padding-top: 10px;
    padding-bottom: 56px;
    overflow: hidden;
  }

  .calculator--spine-page .tab-content {
    min-height: 360px;
  }

  .calculator--spine-page .tab-pane {
    min-height: 320px;
  }

  .spine-calculator-page__steps,
  .spine-calculator-page__faq {
    padding: 56px 0 62px;
  }

  .spine-calculator-page__step-grid,
  .spine-calculator-page__link-grid {
    grid-template-columns: 1fr;
  }

  .spine-calculator-page__step-grid {
    margin-top: 28px;
  }

  .spine-calculator-page__answer,
  .spine-calculator-page__step-grid article,
  .spine-calculator-page__precision aside {
    padding: 22px;
  }

  .spine-calculator-page__precision aside {
    padding-left: 24px;
  }

  .spine-calculator-page__precision .btn {
    width: 100%;
  }

  .spine-calculator-page__faq-list summary {
    padding-top: 21px;
    padding-bottom: 21px;
    font-size: 17px;
  }

  .spine-calculator-page__link-grid a {
    min-height: 132px;
    padding: 24px 56px 24px 24px;
  }

}

@media (prefers-reduced-motion: reduce) {
  .spine-calculator-page *,
  .calculator-page__spine-link * {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}