/* Page-family modifiers; components remain shared. */
.pbt-home .pbt-material-mastery .pbt-section-heading {
  display: grid;
  grid-template-columns: minmax(14rem, 0.7fr) minmax(18rem, 1.3fr);
  max-width: none;
  align-items: end;
}

.pbt-home .pbt-material-mastery .pbt-section-heading__description {
  justify-self: end;
}

.pbt-product-hub .pbt-card-grid--3 .pbt-category-card {
  min-height: 25rem;
}

.pbt-product-detail .pbt-hero--product .pbt-hero__media {
  min-height: 34rem;
}

/* Layout variants override composition-level tokens, not component markup. */
.pbt-layout--kevlar {
  --pbt-variant-accent: #c7a35d;
}

.pbt-layout--kevlar .pbt-hero--compact-technical {
  background: #f2f1ed;
}

.pbt-layout--kevlar .pbt-hero--compact-technical .pbt-hero__media {
  min-height: 24rem;
}

.pbt-layout--kevlar .pbt-feature-card__number,
.pbt-layout--kevlar .pbt-system-grid span {
  color: var(--pbt-variant-accent);
}

.pbt-layout--kevlar .pbt-category-card:hover,
.pbt-layout--kevlar .pbt-card:hover {
  border-color: var(--pbt-variant-accent);
}

.pbt-layout--thermoformed .pbt-hero--media-led .pbt-hero__media {
  min-height: 42rem;
}

.pbt-layout--thermoformed .pbt-media-copy__media {
  min-height: 40rem;
}

.pbt-layout--thermoformed .pbt-system-section {
  border-block: 1px solid rgba(255, 255, 255, 0.14);
}

/* Tablet. */
@media (max-width: 74rem) {
  .pbt-site-header__cta {
    display: none;
  }

  .pbt-card-grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pbt-process {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .pbt-process li:nth-child(3n) {
    border-right: 0;
  }

  .pbt-system-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .pbt-system-grid li:nth-child(3n) {
    border-right: 0;
  }

  .pbt-site-footer__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .pbt-site-footer__brand {
    grid-column: 1 / -1;
  }
}

/* Shared mobile navigation and component reflow. */
@media (max-width: 62rem) {
  .pbt-primary-navigation {
    position: fixed;
    z-index: 110;
    inset: 5rem 0 0;
    display: flex;
    visibility: hidden;
    flex-direction: column;
    justify-content: center;
    padding: var(--pbt-gutter);
    background: var(--pbt-color-surface);
    opacity: 0;
    transform: translateX(100%);
    transition: opacity 220ms ease, transform 320ms ease, visibility 320ms;
  }

  .pbt-primary-navigation.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateX(0);
  }

  .pbt-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .pbt-menu li {
    border-bottom: var(--pbt-border-width) solid var(--pbt-border);
  }

  .pbt-menu a {
    width: 100%;
    padding-block: var(--pbt-space-4);
    font-family: var(--pbt-font-display);
    font-size: clamp(1.5rem, 6vw, 2.5rem);
    letter-spacing: -0.03em;
  }

  .pbt-primary-navigation__mobile-cta {
    display: block;
    margin-top: var(--pbt-space-8);
  }

  .pbt-menu-toggle {
    width: 3rem;
    height: 3rem;
    display: grid;
    place-content: center;
    gap: 6px;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
  }

  .pbt-menu-toggle span:not(.screen-reader-text) {
    width: 1.5rem;
    height: 2px;
    display: block;
    background: currentColor;
    transition: transform var(--pbt-transition);
  }

  .pbt-menu-toggle[aria-expanded="true"] span:nth-last-child(2) {
    transform: translateY(4px) rotate(45deg);
  }

  .pbt-menu-toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-4px) rotate(-45deg);
  }

  .pbt-hero,
  .pbt-hero--compact-technical,
  .pbt-hero--product {
    min-height: auto;
  }

  .pbt-hero__grid,
  .pbt-hero--home-dark .pbt-hero__grid,
  .pbt-hero--compact-technical .pbt-hero__grid,
  .pbt-hero--media-led .pbt-hero__grid {
    grid-template-columns: 1fr;
  }

  .pbt-hero__content {
    max-width: 48rem;
  }

  .pbt-hero__media,
  .pbt-hero--home-dark .pbt-hero__media {
    min-height: 34rem;
  }

  .pbt-hero--home-dark .pbt-hero__image {
    position: relative;
  }

  .pbt-media-copy,
  .pbt-branding-bridge__grid,
  .pbt-faq-layout {
    grid-template-columns: 1fr;
  }

  .pbt-media-copy--reverse .pbt-media-copy__media,
  .pbt-media-copy--reverse .pbt-media-copy__content {
    order: initial;
  }

  .pbt-card-grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pbt-configuration-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pbt-shape-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .pbt-home .pbt-material-mastery .pbt-section-heading {
    grid-template-columns: 1fr;
  }

  .pbt-home .pbt-material-mastery .pbt-section-heading__description {
    justify-self: start;
  }

  .pbt-layout--thermoformed .pbt-hero--media-led .pbt-hero__media,
  .pbt-layout--thermoformed .pbt-media-copy__media {
    min-height: 32rem;
  }
}

@media (max-width: 46rem) {
  :root {
    --pbt-section-space: 5rem;
    --pbt-section-space-lg: 6rem;
  }

  .pbt-site-header,
  .pbt-site-header__inner {
    min-height: 4.5rem;
  }

  .pbt-primary-navigation {
    inset: 4.5rem 0 0;
  }

  .pbt-site-brand__label {
    font-size: 0.75rem;
  }

  .pbt-hero__grid {
    gap: var(--pbt-space-10);
    padding-block: var(--pbt-space-16);
  }

  .pbt-hero__media,
  .pbt-hero--home-dark .pbt-hero__media {
    min-height: 25rem;
  }

  .pbt-card-grid--2,
  .pbt-card-grid--3,
  .pbt-card-grid--4,
  .pbt-shape-grid,
  .pbt-configuration-grid {
    grid-template-columns: 1fr;
  }

  .pbt-category-card {
    min-height: 25rem;
  }

  .pbt-media-copy__media,
  .pbt-branding-bridge__media {
    min-height: 25rem;
  }

  .pbt-process,
  .pbt-system-grid {
    grid-template-columns: 1fr;
  }

  .pbt-process li,
  .pbt-process li + li,
  .pbt-system-grid li {
    padding: var(--pbt-space-6) 0;
    border-right: 0;
    border-bottom: var(--pbt-border-width) solid var(--pbt-border);
  }

  .pbt-feature-card__number,
  .pbt-process > li > span,
  .pbt-system-grid span {
    margin-bottom: var(--pbt-space-5);
  }

  .pbt-branding-bridge__items {
    grid-template-columns: 1fr;
  }

  .pbt-product-gallery {
    grid-template-columns: 1fr;
  }

  .pbt-product-gallery__stage {
    min-height: 26rem;
  }

  .pbt-product-gallery__thumbs {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .pbt-specification-list__row {
    grid-template-columns: 1fr;
    gap: var(--pbt-space-2);
  }

  .pbt-site-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pbt-site-footer__brand {
    grid-column: 1 / -1;
  }

  .pbt-site-footer__bottom {
    flex-direction: column;
  }

  .pbt-button-row,
  .pbt-button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}