.product-hero ~ .section,
.product-nav ~ .section {
  scroll-margin-top: 140px;
}

.product-hero {
  min-height: 760px;
  position: relative;
  display: grid;
  align-items: end;
  padding: 146px 0 72px;
  color: var(--color-white);
  background: var(--color-ink);
}

.product-hero__media,
.product-hero__overlay {
  position: absolute;
  inset: 0;
}

.product-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-hero__overlay {
  background:
    linear-gradient(90deg, rgb(8 15 22 / 92%) 0%, rgb(8 15 22 / 72%) 46%, rgb(8 15 22 / 28%) 76%),
    linear-gradient(0deg, rgb(8 15 22 / 70%), transparent 52%);
}

.product-hero__inner {
  width: min(100%, var(--container-wide));
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.42fr);
  align-items: end;
  gap: clamp(48px, 8vw, 128px);
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  color: #b9c4ce;
  font-size: var(--text-label);
}

.breadcrumbs a {
  color: inherit;
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--color-white);
}

.breadcrumbs span[aria-hidden="true"] {
  color: #6f7d88;
}

.product-hero .model-badge {
  margin-bottom: var(--space-5, 1.25rem);
}

.product-hero h1 {
  max-width: 920px;
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(56px, 7vw, 104px);
  font-weight: var(--font-weight-semibold);
  line-height: 0.92;
  letter-spacing: -0.055em;
}

.product-hero__lead {
  max-width: 720px;
  margin: var(--space-8) 0;
  color: #d2dae1;
  font-size: var(--text-lead);
  line-height: var(--leading-lead);
}

.product-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.button--ghost-light {
  color: var(--color-white);
  background: rgb(16 24 32 / 18%);
  border-color: rgb(255 255 255 / 42%);
}

.button--ghost-light:hover:not(:disabled) {
  color: var(--color-white);
  background: rgb(255 255 255 / 12%);
  border-color: rgb(255 255 255 / 72%);
}

.product-hero__aside {
  padding: 52px var(--space-6) var(--space-6);
  color: var(--color-ink);
  background: rgb(255 255 255 / 96%);
  box-shadow: var(--shadow-raised);
}

.product-hero__aside .engineering-frame__label {
  color: var(--color-primary);
}

.product-hero__aside > p {
  margin: 0 0 var(--space-6);
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  line-height: var(--leading-small);
}

.hero-specs {
  margin: 0;
}

.hero-specs div {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-top: var(--border-default);
}

.hero-specs dt {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
}

.hero-specs dd {
  margin: 0;
  text-align: right;
  font-family: var(--font-mono);
  font-size: var(--text-small);
}

.product-nav {
  position: sticky;
  z-index: calc(var(--z-header) - 1);
  top: 68px;
  background: rgb(255 255 255 / 96%);
  border-bottom: var(--border-default);
  backdrop-filter: blur(12px);
}

.product-nav__inner {
  min-height: 58px;
  display: flex;
  align-items: center;
  gap: var(--space-8);
  overflow-x: auto;
}

.product-nav strong,
.product-nav a {
  white-space: nowrap;
}

.product-nav strong {
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: var(--text-small);
}

.product-nav a {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  text-decoration: none;
}

.product-nav a:hover {
  color: var(--color-primary);
}

.product-intro {
  background:
    linear-gradient(90deg, rgb(16 24 32 / 3%) 1px, transparent 1px) 0 0 / 32px 32px,
    var(--color-surface);
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  background: var(--color-border);
  border: var(--border-default);
  gap: 1px;
}

.scenario-card {
  min-height: 300px;
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  background: var(--color-white);
}

.scenario-card__number {
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-label);
}

.scenario-card__content {
  margin-top: auto;
}

.scenario-card h3 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-h3);
  letter-spacing: var(--tracking-heading);
}

.scenario-card p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  line-height: var(--leading-small);
}

.product-detail {
  color: var(--color-white);
  background:
    linear-gradient(90deg, rgb(255 255 255 / 4%) 1px, transparent 1px) 0 0 / 40px 40px,
    var(--color-ink);
}

.product-detail__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(480px, 1.22fr);
  gap: clamp(48px, 8vw, 128px);
}

.product-detail__sticky {
  position: sticky;
  top: 158px;
  align-self: start;
}

.product-detail h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-h1);
  line-height: var(--leading-h1);
  letter-spacing: var(--tracking-display);
}

.product-detail__sticky > p {
  margin: var(--space-6) 0 0;
  color: #aeb9c4;
  line-height: var(--leading-body);
}

.spec-matrix {
  margin: 0;
  border-top: 1px solid #344451;
}

.spec-matrix div {
  display: grid;
  grid-template-columns: minmax(180px, 0.7fr) minmax(0, 1fr);
  gap: var(--space-8);
  padding: var(--space-6) 0;
  border-bottom: 1px solid #344451;
}

.spec-matrix dt {
  color: #82909d;
  font-size: var(--text-small);
}

.spec-matrix dd {
  margin: 0;
  font-family: var(--font-mono);
  line-height: 1.5;
}

.product-benefits {
  background: var(--color-white);
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.benefit-card {
  min-height: 260px;
  position: relative;
  overflow: hidden;
  padding: var(--space-8);
  background: var(--color-surface);
  border: var(--border-default);
}

.benefit-card::after {
  content: attr(data-index);
  position: absolute;
  right: -8px;
  bottom: -32px;
  color: rgb(0 48 135 / 6%);
  font-family: var(--font-mono);
  font-size: 132px;
  line-height: 1;
}

.benefit-card h3 {
  max-width: 420px;
  margin: var(--space-6) 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-h3);
  letter-spacing: var(--tracking-heading);
}

.benefit-card p {
  max-width: 520px;
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--color-text-secondary);
  line-height: var(--leading-body);
}

.finish-section {
  background:
    radial-gradient(circle at 82% 46%, rgb(0 48 135 / 9%), transparent 28%),
    var(--color-surface);
}

.finish-layout {
  display: grid;
  grid-template-columns: minmax(380px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(40px, 7vw, 104px);
}

.finish-visual {
  min-height: 520px;
  overflow: hidden;
  color: var(--color-white);
  background: var(--color-graphite);
}

.finish-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.finish-visual .engineering-frame__label {
  padding: var(--space-2);
  background: rgb(16 24 32 / 72%);
}

.finish-content {
  align-self: center;
}

.finish-content h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-h1);
  line-height: var(--leading-h1);
  letter-spacing: var(--tracking-display);
}

.finish-content > p {
  margin: var(--space-6) 0 var(--space-8);
  color: var(--color-text-secondary);
  line-height: var(--leading-body);
}

.finish-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 0;
  padding: 0;
  border-top: var(--border-default);
  list-style: none;
}

.finish-list li {
  min-height: 112px;
  padding: var(--space-4);
  border-right: var(--border-default);
  border-bottom: var(--border-default);
}

.finish-list li:nth-child(even) {
  border-right: 0;
}

.finish-list strong,
.finish-list span {
  display: block;
}

.finish-list strong {
  margin-bottom: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-small);
}

.finish-list span {
  color: var(--color-text-secondary);
  font-size: var(--text-label);
  line-height: 1.5;
}

.other-models {
  background: var(--color-white);
}

.other-models__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.other-model {
  display: grid;
  grid-template-columns: minmax(180px, 0.65fr) minmax(0, 1fr);
  min-height: 300px;
  color: var(--color-ink);
  background: var(--color-surface);
  border: var(--border-default);
  text-decoration: none;
  transition:
    border-color var(--duration-micro) var(--ease-standard),
    transform var(--duration-micro) var(--ease-standard);
}

.other-model:hover {
  border-color: #9ab5d9;
  transform: translateY(-2px);
}

.other-model__image {
  min-height: 100%;
  overflow: hidden;
}

.other-model__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.other-model__content {
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
}

.other-model h3 {
  margin: var(--space-4) 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-h3);
  letter-spacing: var(--tracking-heading);
}

.other-model p {
  margin: 0 0 var(--space-6);
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  line-height: var(--leading-small);
}

.other-model .text-link {
  margin-top: auto;
}

.product-measure-note {
  display: block;
  margin-bottom: var(--space-4);
  color: #b8d4ff;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.data-note--light {
  grid-column: 2;
  color: #9eabb6;
}

.product-tool {
  background:
    linear-gradient(90deg, rgb(16 24 32 / 3%) 1px, transparent 1px) 0 0 / 32px 32px,
    var(--color-surface);
}

.product-tool__grid,
.thermo-explainer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(380px, 0.95fr);
  align-items: center;
  gap: clamp(40px, 8vw, 112px);
}

.product-tool__visual,
.thermo-explainer__visual {
  min-height: 440px;
  overflow: hidden;
  color: #759bd0;
  background: #17222c;
  border: 1px solid #344451;
}

.product-tool__visual img,
.thermo-explainer__visual img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.product-tool__content h2,
.thermo-explainer__content h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-h1);
  line-height: var(--leading-h1);
  letter-spacing: var(--tracking-display);
}

.product-tool__content > p,
.thermo-explainer__content > p {
  margin: var(--space-6) 0 var(--space-8);
  color: var(--color-text-secondary);
  line-height: var(--leading-body);
}

.size-checker {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-white);
  border: var(--border-default);
}

.size-checker__fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.size-checker__result {
  min-height: 42px;
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  line-height: var(--leading-small);
}

.size-checker__result.is-positive {
  color: var(--color-success);
}

.size-checker__result.is-negative {
  color: var(--color-signal);
}

.product-options {
  background:
    linear-gradient(90deg, rgb(16 24 32 / 3%) 1px, transparent 1px) 0 0 / 32px 32px,
    var(--color-surface);
}

.option-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

.option-card {
  min-height: 450px;
  display: grid;
  grid-template-rows: 220px 1fr;
  overflow: hidden;
  background: var(--color-white);
  border: var(--border-default);
}

.option-card > div:last-child {
  padding: var(--space-6);
}

.option-card h3 {
  margin: var(--space-4) 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-h3);
}

.option-card p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  line-height: var(--leading-small);
}

.option-card__diagram {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgb(255 255 255 / 5%) 1px, transparent 1px) 0 0 / 24px 24px,
    #26323b;
}

.option-card__diagram::before {
  content: "";
  position: absolute;
  inset: 34px 52px 0;
  border: 3px solid #9fc1f0;
  border-bottom: 0;
}

.option-card__diagram--wicket span {
  position: absolute;
  inset: 76px 102px 0;
  border: 3px solid #c94f12;
  border-bottom: 0;
}

.option-card__diagram--wicket span::after {
  content: "";
  width: 7px;
  height: 7px;
  position: absolute;
  top: 55%;
  right: 12px;
  background: #c94f12;
}

.option-card__diagram--glazing {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.option-card__diagram--glazing span {
  width: 54px;
  height: 42px;
  z-index: 1;
  background: #9fc1f0;
  border: 3px solid #dbe6f2;
}

.option-card__diagram--release span {
  width: 52px;
  height: 52px;
  position: absolute;
  top: 84px;
  left: 50%;
  border: 4px solid #c94f12;
  border-radius: 50%;
  transform: translateX(-50%);
}

.option-card__diagram--release span::after {
  content: "";
  width: 4px;
  height: 58px;
  position: absolute;
  top: 42px;
  left: 20px;
  background: #c94f12;
}

.thermo-explainer {
  color: var(--color-white);
  background:
    linear-gradient(90deg, rgb(255 255 255 / 4%) 1px, transparent 1px) 0 0 / 40px 40px,
    var(--color-ink);
}

.thermo-explainer__content > p {
  color: #aeb9c4;
}

.coefficient-guide {
  margin: 0;
  border-top: 1px solid #344451;
}

.coefficient-guide div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--space-5, 1.25rem);
  padding: var(--space-4) 0;
  border-bottom: 1px solid #344451;
}

.coefficient-guide dt {
  color: #9fc1f0;
  font-family: var(--font-mono);
  font-size: var(--text-label);
}

.coefficient-guide dd {
  margin: 0;
  color: #c2ccd4;
  font-size: var(--text-small);
}

.trim-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: var(--space-12);
  background: #344451;
  border: 1px solid #344451;
  gap: 1px;
}

.trim-comparison article {
  min-height: 220px;
  padding: var(--space-6);
  background: #17222c;
}

.trim-comparison h3 {
  margin: var(--space-6) 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-h3);
}

.trim-comparison p {
  margin: 0;
  color: #aeb9c4;
  line-height: var(--leading-body);
}

@media (max-width: 63.9375rem) {
  .product-hero {
    min-height: auto;
  }

  .product-hero__inner,
  .product-detail__grid,
  .finish-layout,
  .product-tool__grid,
  .thermo-explainer__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .product-hero__aside {
    width: min(100%, 560px);
  }

  .scenario-grid {
    grid-template-columns: 1fr 1fr;
  }

  .scenario-card:last-child {
    grid-column: span 2;
  }

  .product-detail__sticky {
    position: static;
  }

  .finish-visual {
    min-height: 420px;
  }

  .other-model {
    grid-template-columns: minmax(0, 1fr);
  }

  .other-model__image {
    min-height: 230px;
  }

  .data-note--light {
    grid-column: auto;
  }

  .option-grid {
    grid-template-columns: 1fr 1fr;
  }

  .option-card:last-child {
    grid-column: span 2;
  }
}

@media (max-width: 47.9375rem) {
  .product-hero {
    padding: 112px 0 48px;
  }

  .product-hero__media img {
    object-position: 58% center;
  }

  .product-hero__overlay {
    background:
      linear-gradient(180deg, rgb(8 15 22 / 56%), rgb(8 15 22 / 92%) 54%, rgb(8 15 22 / 99%)),
      linear-gradient(90deg, rgb(8 15 22 / 62%), transparent);
  }

  .product-hero h1 {
    font-size: clamp(48px, 14vw, 68px);
  }

  .product-hero__lead {
    font-size: var(--text-body-lg);
  }

  .product-hero__actions {
    align-items: stretch;
    flex-direction: column;
  }

  .product-hero__actions .button {
    width: 100%;
  }

  .product-hero__aside {
    padding: 52px var(--space-5, 1.25rem) var(--space-5, 1.25rem);
  }

  .product-nav {
    top: 64px;
  }

  .product-nav__inner {
    gap: var(--space-5, 1.25rem);
  }

  .scenario-grid,
  .benefit-grid,
  .other-models__grid,
  .option-grid,
  .trim-comparison {
    grid-template-columns: minmax(0, 1fr);
  }

  .scenario-card:last-child {
    grid-column: auto;
  }

  .scenario-card {
    min-height: 230px;
  }

  .product-detail__grid {
    gap: var(--space-12);
  }

  .spec-matrix div {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2);
  }

  .benefit-card {
    min-height: 230px;
    padding: var(--space-6);
  }

  .product-tool__visual,
  .thermo-explainer__visual {
    min-height: auto;
  }

  .size-checker__fields {
    grid-template-columns: minmax(0, 1fr);
  }

  .option-card,
  .option-card:last-child {
    min-height: 400px;
    grid-column: auto;
  }

  .finish-visual {
    min-height: 300px;
  }

  .finish-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .finish-list li,
  .finish-list li:nth-child(even) {
    border-right: 0;
  }

  .other-model {
    grid-template-columns: 140px minmax(0, 1fr);
    min-height: 240px;
  }

  .other-model__image {
    min-height: 100%;
  }

  .other-model__content {
    padding: var(--space-5, 1.25rem);
  }
}