/* =============================================
   內頁樣式 — About、Products、Contact
   ============================================= */

/* ---------- 內頁 Compact Hero（About / Products / Contact） ---------- */
.page-hero,
.inner-page-hero {
  position: relative;
  overflow: hidden;
  background: var(--color-bg-dark);
  padding-block: clamp(2.25rem, 3vw, 2.75rem);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  min-height: clamp(260px, 22vw, 300px);
  display: flex;
  align-items: center;
}

.inner-page-hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(0, 1fr);
  gap: clamp(1.25rem, 3.5vw, 2.75rem);
  align-items: center;
}

.inner-page-hero__main {
  min-width: 0;
  max-width: 36rem;
}

.page-hero-eyebrow {
  font-size: var(--text-xs);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.65rem;
}

.page-hero-title {
  font-size: clamp(1.875rem, 1.4rem + 1.6vw, 2.75rem);
  color: var(--color-white);
  margin-bottom: 0.65rem;
  line-height: 1.2;
}

.page-hero-desc {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.65;
  margin: 0;
  max-width: 34rem;
}

html[lang="en"] .page-hero-desc {
  font-size: 0.9375rem;
  line-height: 1.55;
  max-width: 38rem;
}

html[lang="en"] .page-hero-title {
  font-size: clamp(1.7rem, 1.25rem + 1.35vw, 2.5rem);
  letter-spacing: -0.015em;
}

/* Shared right visual frame (~45%) */
.inner-page-hero__visual {
  position: relative;
  justify-self: center;
  width: 100%;
  max-width: min(100%, 29rem);
  min-height: 11.5rem;
  height: clamp(11.5rem, 16vw, 13.75rem);
  pointer-events: none;
}

@media (prefers-reduced-motion: no-preference) {
  .inner-page-hero__visual {
    animation: page-hero-visual-in 0.4s ease both;
  }
}

@keyframes page-hero-visual-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-hero-deco {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.page-hero-deco__grid {
  position: absolute;
  inset: 8% 4%;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.55;
  mask-image: radial-gradient(ellipse 70% 65% at 55% 50%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 70% 65% at 55% 50%, #000 20%, transparent 78%);
}

.page-hero-deco__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(28px);
  opacity: 0.35;
  background: rgba(90, 150, 220, 0.35);
}

.page-hero-deco__glow--a {
  width: 7rem;
  height: 7rem;
  top: 18%;
  right: 18%;
}

.page-hero-deco__glow--b {
  width: 4.5rem;
  height: 4.5rem;
  bottom: 16%;
  left: 22%;
  background: rgba(61, 127, 212, 0.28);
}

.page-hero-deco__logo {
  position: absolute;
  left: 50%;
  top: 48%;
  width: min(58%, 11.5rem);
  height: auto;
  transform: translate(-50%, -50%);
  opacity: 0.2;
  filter: brightness(0) invert(1);
  object-fit: contain;
}

.page-hero-deco__svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.22;
}

.page-hero-deco--about .page-hero-deco__svg {
  opacity: 0.2;
}

.page-hero-deco--contact .page-hero-deco__svg {
  opacity: 0.24;
}

.page-hero-deco--contact .page-hero-deco__logo {
  display: none;
}

/* Products: real product preview (not cards) */
.page-hero-products {
  position: relative;
  width: 100%;
  height: 100%;
}

.page-hero-products__glow {
  position: absolute;
  left: 50%;
  top: 52%;
  width: 78%;
  height: 72%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(90, 150, 220, 0.18) 0%, transparent 70%);
  opacity: 0.9;
}

.page-hero-products__frame {
  position: absolute;
  inset: 10% 6%;
  border: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(255, 255, 255, 0.02);
  opacity: 0.85;
}

.page-hero-products__item {
  position: absolute;
  display: block;
  margin: 0;
}

.page-hero-products__item picture {
  display: block;
  width: 100%;
  height: 100%;
}

.page-hero-products__item img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.page-hero-products__item--back {
  left: 0%;
  top: 4%;
  width: 64%;
  height: 78%;
  opacity: 0.8;
  z-index: 1;
}

.page-hero-products__item--front {
  right: -2%;
  bottom: -2%;
  width: 52%;
  height: 94%;
  opacity: 0.95;
  z-index: 2;
}

@media (max-width: 1024px) {
  .inner-page-hero__content {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 1.25rem;
  }

  .inner-page-hero__visual {
    max-width: min(100%, 22rem);
    height: clamp(10rem, 18vw, 12rem);
    min-height: 10rem;
  }

  html[lang="en"] .inner-page-hero__main {
    max-width: 32rem;
  }
}

@media (max-width: 900px) {
  .inner-page-hero__content {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }

  .inner-page-hero__visual {
    max-width: min(100%, 18.5rem);
    height: 10rem;
    min-height: 10rem;
  }
}

@media (max-width: 700px) {
  .page-hero,
  .inner-page-hero {
    min-height: 0;
    padding-block: clamp(2rem, 5.5vw, 2.5rem);
  }

  .inner-page-hero__content {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .inner-page-hero__main {
    max-width: none;
  }

  .page-hero-title {
    font-size: clamp(1.75rem, 7vw, 2.25rem);
  }

  /* Hide decorative About / Contact visuals on mobile */
  .inner-page-hero__visual--about,
  .inner-page-hero__visual--contact {
    display: none;
  }

  /* Keep Products preview compact */
  .inner-page-hero__visual--products {
    max-width: 16rem;
    width: 100%;
    height: 8.25rem;
    min-height: 0;
    justify-self: start;
    margin-top: 0.25rem;
  }

  .page-hero-products__frame {
    inset: 6% 2%;
  }

  .page-hero-products__item--back {
    width: 56%;
    height: 78%;
    top: 8%;
  }

  .page-hero-products__item--front {
    width: 44%;
    height: 88%;
  }
}

@media (max-width: 430px) {
  .inner-page-hero__visual--products {
    height: 7.5rem;
  }
}

/* ---------- About Page ---------- */
.about-page-content {
  max-width: 52rem;
}

.about-page-content p {
  font-size: var(--text-lg);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}

.about-page-content p:last-of-type {
  margin-bottom: var(--space-2xl);
}

.about-em {
  font-weight: 600;
  color: var(--color-primary-dark);
}

.about-page-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg) var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.about-page-links .section-link {
  margin-top: 0;
}

/* ---------- About — Company Overview ---------- */
.page-about .section:has(+ .about-overview-section) {
  padding-bottom: var(--space-2xl);
}

.about-overview-section {
  background: #f6f8fc;
  padding-block: clamp(2rem, 4vw, 2.75rem);
}

.about-overview-header {
  max-width: 40rem;
  margin-bottom: clamp(1.75rem, 3vw, 2.5rem);
}

.about-overview-desc {
  font-size: var(--text-lg);
  line-height: 1.75;
  color: var(--color-text-muted);
  max-width: 36rem;
}

.about-overview-grid {
  display: grid;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1.25rem, 2vw, 2.5rem);
}

.about-overview-card {
  position: relative;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  padding: var(--space-lg) var(--space-lg) var(--space-md);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 8px rgba(6, 18, 32, 0.04);
  transition:
    transform 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease;
}

/* Zebra Connector landing pages: align and emphasize specification actions. */
.page-zebra-landing .about-overview-card {
  display: flex;
  flex-direction: column;
}

.page-zebra-landing .about-overview-action {
  margin-top: auto;
  padding-top: var(--space-lg);
}

.page-zebra-landing .connector-spec-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  max-width: 100%;
  min-height: 44px;
  padding: 0.7rem 1rem;
  border: 1px solid var(--color-primary-dark);
  border-radius: var(--radius-md);
  background: var(--color-primary-dark);
  color: var(--color-white);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

.page-zebra-landing .connector-spec-link:hover {
  background: #0b2d57;
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(6, 18, 32, 0.15);
}

.page-zebra-landing .connector-spec-link:focus-visible {
  outline: 3px solid rgba(42, 124, 201, 0.45);
  outline-offset: 3px;
}

.page-zebra-landing #zebra-types-title {
  scroll-margin-top: calc(var(--header-height) + var(--space-xl));
}

.about-overview-accent {
  position: absolute;
  top: 0;
  left: var(--space-lg);
  right: var(--space-lg);
  height: 2px;
  border-radius: 0 0 2px 2px;
  background: linear-gradient(90deg, var(--color-primary-dark) 0%, var(--color-primary-light) 100%);
}

.about-overview-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin-bottom: var(--space-sm);
  color: var(--color-primary-light);
}

.about-overview-icon svg {
  width: 1.75rem;
  height: 1.75rem;
}

.about-overview-value {
  font-size: clamp(2.25rem, 1.6rem + 1.2vw, 3rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
  word-break: keep-all;
}

.about-overview-value--compact {
  font-size: clamp(1.375rem, 1rem + 0.9vw, 1.875rem);
  letter-spacing: -0.01em;
}

.about-overview-label {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-xs);
  line-height: 1.35;
  word-break: normal;
  overflow-wrap: normal;
  hyphens: none;
}

.about-overview-text {
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-text-muted);
  margin: 0;
  word-break: normal;
  overflow-wrap: normal;
}

@media (hover: hover) {
  .about-overview-card:hover {
    transform: translateY(-3px);
    border-color: rgba(18, 61, 114, 0.22);
    box-shadow: 0 6px 20px rgba(6, 18, 32, 0.07);
  }
}

@media (max-width: 1199px) {
  .about-overview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .about-overview-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.about-business-list {
  margin-bottom: var(--space-3xl);
}

.about-business-list li {
  position: relative;
  padding-left: var(--space-lg);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.about-business-list li + li {
  margin-top: var(--space-sm);
}

.about-business-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 1px;
  background: var(--color-primary-light);
}

.section-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.02em;
  margin-top: var(--space-lg);
  transition: gap var(--transition-fast);
  white-space: nowrap;
}

.section-link:hover {
  gap: var(--space-md);
}

/* ---------- Products Page ---------- */
.products-page {
  background: var(--color-bg-subtle);
  overflow-anchor: none;
}

/* Anchor targets sit just below fixed header (~16–24px gap) */
.product-section[id],
.product-detail[id] {
  scroll-margin-top: calc(var(--header-height) + 1.25rem);
}

#heating {
  scroll-margin-top: calc(var(--header-height) + 2.25rem);
}

#heating .heating-hero-title {
  scroll-margin-top: calc(var(--header-height) + 1.25rem);
}

@media (max-width: 768px) {
  .product-section[id],
  .product-detail[id] {
    scroll-margin-top: calc(var(--header-height) + 0.75rem);
  }

  #heating {
    scroll-margin-top: calc(var(--header-height) + 1.75rem);
  }
}

.products-page-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: var(--space-2xl);
  align-items: start;
  min-width: 0;
}

.products-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 0.75rem);
  align-self: start;
  /* Insurance for very short viewports; normal notebook heights should fit without scrolling */
  max-height: calc(100vh - var(--header-height) - 20px);
  max-height: calc(100dvh - var(--header-height) - 20px);
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  padding-bottom: max(0.75rem, env(safe-area-inset-bottom, 0px));
  scrollbar-gutter: stable;
}

.products-main {
  min-width: 0;
}

.products-category-visual {
  margin-bottom: var(--space-sm);
}

.products-category-visual.product-showcase {
  aspect-ratio: 4 / 3;
  min-height: 0;
  padding: 0.4rem;
  background: #ffffff;
  border: 1px solid #e9edf3;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
}

/* Silicone sidebar: slightly shorter visual so all 4 type buttons fit on notebook heights */
@media (min-width: 769px) {
  #silicone-section .products-category-visual.product-showcase {
    aspect-ratio: auto;
    height: auto;
    max-height: 11.25rem; /* ~10–15% shorter than full 4:3 in 280px column */
    display: flex;
    align-items: center;
    justify-content: center;
  }

  #silicone-section .products-category-visual .product-photo {
    width: 100%;
    height: 100%;
    max-height: 10.5rem;
    object-fit: contain;
    object-position: center;
  }

  #silicone-section .type-selector-label {
    margin-top: 0.15rem;
    margin-bottom: 0.45rem;
  }

  #silicone-section .type-selector {
    gap: 0.4rem;
  }

  #silicone-section .type-btn {
    min-height: 42px;
    padding: 0.55rem 0.4rem;
  }
}

.heating-core-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
}

.heating-core-gallery .product-showcase--tall {
  width: 100%;
}

/* ---------- Elastomeric Connector Applications Gallery ---------- */
.connector-apps {
  margin-bottom: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid var(--color-border-light);
  max-width: 100%;
  overflow-x: clip;
}

.connector-apps-eyebrow {
  margin: 0 0 var(--space-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.connector-apps-title {
  margin: 0 0 var(--space-md);
  font-size: var(--text-2xl);
  color: var(--color-primary-dark);
  line-height: 1.3;
  text-wrap: balance;
  word-break: normal;
  hyphens: none;
}

.connector-apps-desc {
  margin: 0 0 clamp(1.25rem, 2vw, 1.75rem);
  max-width: 46rem;
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
}

.connector-apps-grid {
  --app-gap: clamp(0.75rem, 1.5vw, 1.125rem);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: stretch;
  gap: var(--app-gap);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  margin-top: 0;
}

.connector-app-card {
  display: flex;
  flex-direction: column;
  flex: 0 1 calc((100% - (3 * var(--app-gap))) / 4);
  width: calc((100% - (3 * var(--app-gap))) / 4);
  max-width: calc((100% - (3 * var(--app-gap))) / 4);
  min-width: 0;
  height: auto;
  box-sizing: border-box;
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 6px rgba(6, 18, 32, 0.03);
  overflow: hidden;
  transition:
    transform 200ms ease,
    box-shadow 200ms ease;
}

@media (hover: hover) {
  .connector-app-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(6, 18, 32, 0.06);
  }
}

.connector-app-media {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 1 / 1;
  padding: 0.7rem;
  overflow: hidden;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: #f8fafc;
  box-sizing: border-box;
  flex-shrink: 0;
}

.connector-app-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.connector-app-caption {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  margin: 0;
  width: 100%;
  min-width: 0;
  min-height: 3.35rem;
  box-sizing: border-box;
  padding: 0.55rem 0.5rem 0.7rem;
  text-align: center;
}

.connector-app-name-zh {
  display: block;
  width: 100%;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.3;
}

.connector-app-name-en {
  display: block;
  width: 100%;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  line-height: 1.3;
}

.connector-apps-note {
  margin: var(--space-lg) 0 0;
  font-size: var(--text-xs);
  color: var(--color-text-light);
  line-height: 1.5;
  text-align: center;
}

@media (max-width: 1024px) {
  .connector-apps-grid {
    justify-content: flex-start;
  }

  .connector-app-card {
    flex-basis: calc((100% - (2 * var(--app-gap))) / 3);
    width: calc((100% - (2 * var(--app-gap))) / 3);
    max-width: calc((100% - (2 * var(--app-gap))) / 3);
  }
}

@media (max-width: 767px) {
  .connector-apps-grid {
    --app-gap: 0.75rem;
    justify-content: flex-start;
  }

  .connector-app-card {
    flex-basis: calc((100% - var(--app-gap)) / 2);
    width: calc((100% - var(--app-gap)) / 2);
    max-width: calc((100% - var(--app-gap)) / 2);
  }

  .connector-app-media {
    padding: 0.55rem;
  }

  .connector-app-caption {
    min-height: 3.15rem;
    padding: 0.5rem 0.4rem 0.6rem;
  }

  .connector-app-name-zh {
    font-size: 0.875rem;
  }

  .connector-app-name-en {
    font-size: 0.6875rem;
  }
}

@media (max-width: 360px) {
  .connector-apps-grid {
    justify-content: stretch;
  }

  .connector-app-card {
    flex-basis: 100%;
    width: 100%;
    max-width: 100%;
  }
}

.category-selector {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: var(--space-md);
}

.category-btn {
  display: flex;
  align-items: center;
  width: 100%;
  text-align: left;
  padding: 0.65rem 1rem;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast),
    background var(--transition-fast);
  min-height: 2.75rem;
  white-space: normal;
  box-sizing: border-box;
}

.category-btn:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

.category-btn.is-active {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

a.category-btn--link {
  text-decoration: none;
  cursor: pointer;
}

a.category-btn--link:hover,
a.category-btn--link:focus-visible {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

a.category-btn--link.is-active,
a.category-btn--link.is-active:hover,
a.category-btn--link.is-active:focus-visible {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

.type-selector-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-light);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.type-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.type-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-align: center;
  min-height: 48px;
  line-height: 1.3;
  word-break: normal;
  overflow-wrap: normal;
  line-break: strict;
  text-wrap: balance;
  hyphens: none;
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast),
    background var(--transition-fast);
}

.type-btn:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

.type-btn.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.product-detail {
  background: var(--color-white);
  border: 1px solid var(--color-border);
}

.product-detail--zebra {
  background: transparent;
  border: none;
}

.product-detail-header {
  padding: var(--space-xl) var(--space-2xl);
  border-bottom: 1px solid var(--color-border-light);
}

.product-detail-title {
  font-size: var(--text-2xl);
}

.product-detail-body {
  padding: var(--space-2xl);
}

/* ---------- Zebra connector overview card (T/T2、TS、TG、IR) ---------- */
.product-overview-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: var(--space-xl) var(--space-2xl);
}

.product-overview-title {
  margin: 0 0 var(--space-xl);
  font-size: var(--text-2xl);
  color: var(--color-primary-dark);
  line-height: 1.25;
}

.product-overview-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.95fr) minmax(0, 1.25fr);
  gap: var(--space-2xl);
  align-items: start;
}

.product-overview-media {
  min-width: 0;
}

.product-overview-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.product-overview-block {
  margin: 0;
}

.product-overview-heading {
  margin: 0 0 clamp(1.25rem, 2vw, 1.75rem);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.product-overview-copy .product-detail-text {
  font-size: var(--text-base);
  line-height: 1.7;
}

.product-overview-copy .product-detail-text p {
  margin: 0;
}

.product-overview-copy .product-detail-text p + p {
  margin-top: 0.55em;
}

.product-overview-copy .product-detail-text p.product-intro-note {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.7;
  margin-top: 0.95em;
  padding-left: 1.15em;
  text-indent: -1.15em;
}

.product-overview-copy .product-app-list {
  gap: 1.25rem;
}

.product-overview-copy .product-app-list li {
  font-size: var(--text-sm);
  line-height: 1.55;
}

.product-detail-more {
  margin-top: var(--space-xl);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: var(--space-2xl);
}

.product-detail-more > .product-detail-section:first-child {
  margin-top: 0;
}

.product-detail-image {
  margin-bottom: var(--space-2xl);
  overflow: hidden;
  background: #ffffff;
  border: 1px solid #e9edf3;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- TYPE 主圖共用展示（T/T2、TS、TG、IR） ---------- */
.product-detail-image--type:not(.product-detail-image--dual) {
  aspect-ratio: unset;
  min-height: 260px;
  max-height: 320px;
  height: clamp(260px, 28vw, 320px);
  padding: 0.5rem;
  margin-bottom: 0;
}

.product-overview-image.product-detail-image--type:not(.product-detail-image--dual) {
  width: 100%;
}

.product-detail-image--type:not(.product-detail-image--dual) .product-photo {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  object-fit: contain;
  object-position: center;
}

.product-type-zoom {
  display: block;
  position: relative;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
  line-height: 0;
}

.product-type-zoom:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.product-type-zoom-icon {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 999px;
  background: rgba(7, 22, 40, 0.42);
  color: #ffffff;
  pointer-events: none;
}

.product-type-zoom:hover .product-type-zoom-icon,
.product-type-zoom:focus-visible .product-type-zoom-icon {
  background: rgba(7, 22, 40, 0.62);
}

.product-detail-image--type .product-detail-image-item .product-type-zoom {
  flex: 1 1 auto;
  min-height: 160px;
  max-height: 230px;
}

.product-detail-image--type.product-detail-image--dual {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-sm);
  aspect-ratio: unset;
  max-height: none;
  min-height: 0;
  height: auto;
  overflow: visible;
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
  margin-bottom: 0;
}

.product-detail-image--type .product-detail-image-item {
  margin: 0;
  aspect-ratio: unset;
  min-height: 200px;
  max-height: 280px;
  overflow: hidden;
  background: #ffffff;
  border: 1px solid #e9edf3;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
  display: flex;
  flex-direction: column;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.product-detail-image--type .product-detail-image-item:hover {
  border-color: #d5dde8;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

.product-detail-image--type .product-detail-image-item .product-photo {
  flex: 1 1 auto;
  min-height: 160px;
  max-height: 230px;
  width: 100%;
  height: 100%;
  max-width: none;
  padding: 0.375rem;
  object-fit: contain;
  object-position: center;
}

.product-detail-image-label {
  flex: 0 0 auto;
  margin: 0;
  padding: 0.5rem var(--space-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary-dark);
  text-align: center;
  background: var(--color-white);
  border-top: 1px solid var(--color-border-light);
}

@media (min-width: 769px) and (max-width: 1100px) {
  .product-overview-layout {
    grid-template-columns: minmax(200px, 0.9fr) minmax(0, 1.2fr);
    gap: var(--space-xl);
  }

  .product-detail-image--type:not(.product-detail-image--dual) {
    min-height: 240px;
    max-height: 300px;
    height: clamp(240px, 30vw, 300px);
  }

  .product-detail-image--type .product-detail-image-item {
    min-height: 180px;
    max-height: 250px;
  }

  .product-detail-image--type .product-detail-image-item .product-photo {
    min-height: 140px;
    max-height: 200px;
  }

  .product-detail-image--type .product-detail-image-item .product-type-zoom {
    min-height: 140px;
    max-height: 200px;
  }
}

@media (max-width: 900px) {
  .product-overview-layout {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .product-overview-media {
    max-width: 360px;
    margin-inline: auto;
  }

  .product-detail-image--type.product-detail-image--dual {
    max-width: 420px;
    margin-inline: auto;
  }
}

.product-detail-image img {
  object-fit: contain;
  object-position: center;
}

.product-detail-section {
  margin-bottom: var(--space-2xl);
}

/* ---------- TYPE 結構與尺寸示意 ---------- */
.product-structure-note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0 0 var(--space-md);
}

.product-structure-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
  list-style: none;
  margin: 0 0 var(--space-xl);
  padding: 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.product-structure-symbol {
  font-weight: 600;
  color: var(--color-primary-dark);
  letter-spacing: 0.02em;
}

.product-structure-grid {
  display: grid;
  gap: var(--space-md);
}

.product-structure-grid--dual {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.product-structure-item {
  margin: 0;
  background: #ffffff;
  border: 1px solid #e5eaf1;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.product-structure-photo {
  display: block;
  width: 100%;
  height: auto;
  min-height: 280px;
  padding: var(--space-md);
  object-fit: contain;
  object-position: center;
  background: #ffffff;
}

.product-structure-grid:not(.product-structure-grid--dual) .product-structure-photo {
  min-height: 360px;
}

/* T/T2：收緊留白後的示意圖，放大圖內字樣可讀性 */
.product-structure-grid--tt2 .product-structure-item {
  height: 100%;
}

.product-structure-grid--tt2 .product-structure-media {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 360px;
  padding: 0.5rem 0.35rem 0.25rem;
  background: #ffffff;
}

.product-structure-grid--tt2 .product-structure-photo {
  width: 100%;
  height: auto;
  min-height: 0;
  max-height: 440px;
  padding: 0;
  object-fit: contain;
  object-position: center;
}

/* IR 結構圖卡：獨立 media／caption，底部安全距離必須可見 */
.product-structure-grid--ir {
  align-items: stretch;
}

.product-structure-grid--ir .ir-diagram-card,
.product-structure-grid--ir .product-structure-item.ir-diagram-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  margin: 0;
  overflow: visible;
  background: #ffffff;
  border: 1px solid #e5eaf1;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
}

.product-structure-grid--ir .ir-diagram-media {
  flex: 1 1 auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  box-sizing: border-box;
  min-height: 360px;
  /* 底部 48px：圖內 H=HEIGHT 與分隔線之間的可見白底 */
  padding: 1.25rem 1.25rem 3rem;
  overflow: visible;
  background: #ffffff;
}

.product-structure-grid--ir .ir-diagram-image {
  display: block;
  width: auto;
  height: auto;
  max-width: 94%;
  max-height: 390px;
  margin: 0;
  padding: 0;
  border: 0;
  object-fit: contain;
  object-position: center top;
}

.product-structure-grid--ir .ir-diagram-caption {
  flex: 0 0 auto;
  margin: 0;
  padding: 1.125rem 1.25rem;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.45;
  text-align: center;
  color: var(--color-primary-dark);
  background: #ffffff;
  border-top: 1px solid #e5eaf1;
}

@media (max-width: 1100px) {
  html[lang="zh-Hant"] .product-structure-grid--tt2,
  html[lang="zh-Hant"] .product-structure-grid--ir {
    grid-template-columns: 1fr;
  }
}

html[lang="zh-Hant"] .product-structure-grid--tt2 .product-structure-photo {
  max-height: 560px;
}

html[lang="zh-Hant"] .product-structure-grid--ir .ir-diagram-image {
  max-height: 480px;
}

html[lang="zh-Hant"] .product-structure-grid:not(.product-structure-grid--dual) .product-structure-photo {
  min-height: 400px;
  max-height: none;
}

html[lang="zh-Hant"] .product-structure-grid:not(.product-structure-grid--dual) .product-structure-item {
  overflow: visible;
}

/* TS / TG：整組示意（主體＋圖例）已在 PNG 內置中，卡片內 100% 等比顯示 */
.product-structure-grid--sandwich .product-structure-photo {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 auto;
  padding: var(--space-md);
  object-fit: contain;
  object-position: center;
}

.product-structure-label {
  flex: 0 0 auto;
  margin: 0;
  padding: 0.625rem var(--space-md);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  text-align: center;
  background: #ffffff;
  border-top: 1px solid #e5eaf1;
  line-height: 1.45;
}

.product-detail-section:last-child {
  margin-bottom: 0;
}

.product-detail-section-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border-light);
}

.product-detail-placeholder {
  font-size: var(--text-base);
  color: var(--color-text-light);
  line-height: 1.75;
  padding: var(--space-lg);
  background: var(--color-bg-subtle);
  border: 1px dashed var(--color-border);
}

.product-detail-text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.85;
}

.product-detail-text p + p {
  margin-top: var(--space-md);
}

.product-detail-text strong {
  color: inherit;
  font-weight: inherit;
}

.product-app-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: 0;
}

.product-app-list li {
  position: relative;
  padding-left: var(--space-lg);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.55;
  word-break: normal;
  overflow-wrap: normal;
  hyphens: none;
}

.product-app-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 1px;
  background: var(--color-primary-light);
}

.product-app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.product-app-tags li {
  display: inline-flex;
  align-items: center;
  margin: 0;
  padding: 0.28rem 0.65rem;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.35;
  color: var(--color-primary-dark);
  background: #f3f6f9;
  border: 1px solid var(--color-border-light);
  border-radius: 999px;
}

/* Shared Applications columns (all elastomeric types) */
.product-app-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(2rem, 4vw, 3.5rem);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.product-app-column,
.product-overview-copy .product-app-column {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: 0;
}

@media (max-width: 767px) {
  .product-app-columns {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }

  .product-app-column,
  .product-overview-copy .product-app-column {
    display: contents;
  }

  .product-app-column:first-child li:nth-child(1) { order: 1; }
  .product-app-column:last-child li:nth-child(1) { order: 2; }
  .product-app-column:first-child li:nth-child(2) { order: 3; }
  .product-app-column:last-child li:nth-child(2) { order: 4; }
  .product-app-column:first-child li:nth-child(3) { order: 5; }
  .product-app-column:last-child li:nth-child(3) { order: 6; }
}

/* ---------- Spec Table (Desktop) ---------- */
.spec-table-wrap {
  overflow-x: auto;
  max-width: 100%;
}

/* 導電條尺寸規格表：維持在右側內容欄內，固定完整顯示（不出現水平捲動條） */
.products-page > .container {
  max-width: calc(var(--container-max) + 100px); /* ~80–120px extra for dim tables */
}

.spec-table-wrap.spec-table-wrap--dim {
  width: 100%;
  max-width: 100%;
  overflow-x: visible;
  overflow-y: visible;
  padding-inline: 2px;
  box-sizing: border-box;
}

.spec-table-wrap--dim .spec-table {
  width: calc(100% - 4px);
  max-width: calc(100% - 4px);
  box-sizing: border-box;
  margin-inline: auto;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.spec-table th,
.spec-table td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  border: 1px solid var(--color-border);
  vertical-align: top;
  word-break: break-word;
}

.spec-table--props thead th {
  background: var(--color-primary-dark);
  color: var(--color-white);
  font-weight: 600;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.spec-table--props tbody th[scope="row"] {
  background: var(--color-bg-subtle);
  font-weight: 600;
  color: var(--color-primary-dark);
  width: 38%;
  min-width: 7rem;
}

.spec-param-name {
  display: inline-block;
  max-width: 100%;
}

.spec-param-main {
  display: block;
  line-height: 1.35;
}

.spec-param-sub {
  display: block;
  font-size: 0.8125em;
  font-weight: 500;
  color: var(--color-text-light);
  line-height: 1.3;
  margin-top: 0.15em;
  white-space: nowrap;
}

.spec-card-param .spec-param-sub {
  font-weight: 500;
}

.spec-table--props tbody td {
  color: var(--color-text-muted);
  width: 31%;
}

.spec-table--props td[colspan="2"] {
  color: var(--color-text-muted);
}

.spec-table--props-4col tbody th[scope="row"] {
  width: 26%;
  min-width: 6.5rem;
}

.spec-table--props-4col tbody td {
  width: 24.66%;
}

.spec-table--props-4col td[colspan="3"] {
  color: var(--color-text-muted);
}

.spec-table--props-5col {
  table-layout: fixed;
}

.spec-table--props-5col thead th {
  text-transform: none;
  letter-spacing: 0.02em;
  vertical-align: middle;
}

.spec-table--props-5col thead th:first-child {
  width: 24%;
}

.spec-table--props-5col thead th:nth-child(n + 2) {
  width: 19%;
}

.spec-table--props-5col tbody th[scope="row"] {
  width: 24%;
  min-width: 9rem;
  vertical-align: middle;
  word-break: keep-all;
  white-space: nowrap;
}

.spec-table--props-5col .spec-param-main {
  white-space: nowrap;
}

.spec-table--props-5col tbody td {
  width: 19%;
  font-size: var(--text-xs);
  vertical-align: middle;
  word-break: break-word;
}

/* IR 物性表：中文色調 IR-TS「半透明或指定顏色」保持同一行（英文版另處理） */
.spec-table--props-5col td.spec-cell-nowrap {
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
}

/* EN Physical Properties: IR-TS Color wraps within its own column */
html[lang="en"] .spec-table--props-5col td.spec-cell-color-en {
  white-space: normal;
  overflow-wrap: normal;
  word-break: normal;
  text-align: center;
  vertical-align: middle;
}

.spec-table--props-5col td[colspan="4"] {
  color: var(--color-text-muted);
  text-align: center;
  background: var(--color-bg-subtle);
  font-size: var(--text-sm);
  letter-spacing: 0.01em;
}

/* IR(TG)(TS) 尺寸規格表 — 四欄 */
.spec-table--ir-dim thead th {
  text-transform: none;
  letter-spacing: 0.02em;
}

.spec-table--ir-dim tbody th[scope="row"] {
  width: 18%;
}

.spec-table--ir-dim tbody td {
  width: auto;
  font-size: var(--text-xs);
}

.spec-table--ir-dim tbody td:nth-child(2),
.spec-table--ir-dim tbody td:nth-child(3) {
  width: 8%;
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
}

.spec-source-note {
  margin: var(--space-sm) 0 0;
  font-size: var(--text-xs);
  color: var(--color-text-light);
  font-style: italic;
}

/* TG / T / TS 型規格表 — 六欄以上 + 尺寸範圍合併 */
.spec-table--tg thead th {
  text-transform: none;
  letter-spacing: 0.02em;
}

.spec-table--tg tbody th[scope="row"] {
  width: 18%;
}

.spec-table--tg tbody td {
  width: auto;
  font-size: var(--text-xs);
}

/* 項目／符號／單位與規格名稱：避免不自然斷字 */
.spec-table--tg thead th:nth-child(-n + 3),
.spec-table--tg tbody th[scope="row"],
.spec-table--ir-dim thead th:nth-child(-n + 3),
.spec-table--ir-dim tbody th[scope="row"] {
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
}

.spec-table--tg tbody td:nth-child(2),
.spec-table--tg tbody td:nth-child(3),
.spec-table--ir-dim tbody td:nth-child(2),
.spec-table--ir-dim tbody td:nth-child(3) {
  width: 8%;
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
}

/* Pitch 規格欄：數值與公差同一行（不含合併範圍欄）；不設硬性 min-width 以免撐出水平捲動 */
.spec-table--tg thead th:nth-child(n + 4),
.spec-table--tg tbody td:nth-child(n + 4):not([colspan]),
.spec-table--ir-dim thead th:nth-child(n + 4),
.spec-table--ir-dim tbody td:nth-child(n + 4):not([colspan]) {
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
}

.spec-range-list {
  display: flex;
  flex-direction: column;
  max-width: 340px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.spec-range-list li {
  display: grid;
  grid-template-columns: minmax(120px, 180px) auto;
  column-gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: center;
  border-bottom: 1px solid #c9d4e0;
  padding: 0.28rem 0;
}

.spec-range-list li.spec-range-list-header {
  border-bottom: 1px solid #8fa6bc;
  padding-bottom: 0.35rem;
}

.spec-range-list-col {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-light);
  letter-spacing: 0.03em;
}

.spec-range,
.spec-tolerance {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.spec-card-meta {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.02em;
}

.spec-card-range-grid {
  display: flex;
  flex-direction: column;
  max-width: 280px;
}

.spec-card-range-head,
.spec-card-range-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  column-gap: clamp(1.25rem, 5vw, 2rem);
  align-items: center;
  border-bottom: 1px solid #c9d4e0;
  padding: 0.28rem 0;
}

.spec-card-range-head {
  border-bottom-color: #8fa6bc;
  padding-bottom: 0.35rem;
}

.spec-card-range-head span,
.spec-card-range-row span {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.spec-card-range-head span {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-light);
}

/* Legacy two-column spec table (other TYPE placeholders) */
.spec-table:not(.spec-table--props) th {
  background: var(--color-bg-subtle);
  font-weight: 600;
  color: var(--color-primary-dark);
  width: 35%;
}

.spec-table:not(.spec-table--props) td {
  color: var(--color-text-light);
}

/* ---------- Spec Cards (Mobile) ---------- */
.spec-cards {
  display: none;
}

.spec-card {
  padding: var(--space-lg);
  border: 1px solid var(--color-border-light);
  border-bottom: none;
  background: var(--color-bg);
}

.spec-card:first-child {
  border-top: 1px solid var(--color-border-light);
}

.spec-card:last-child {
  border-bottom: 1px solid var(--color-border-light);
}

.spec-card-param {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border-light);
}

.spec-card-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-md);
  padding: var(--space-xs) 0;
}

.spec-card-row + .spec-card-row {
  margin-top: var(--space-xs);
}

.spec-card-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-light);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.spec-card-value {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: right;
  word-break: break-word;
}

.spec-card-shared {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  word-break: break-word;
}

/* ---------- Design Information ---------- */
.design-block {
  margin-bottom: var(--space-2xl);
}

.design-block:last-of-type {
  margin-bottom: var(--space-xl);
}

.design-block-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-md);
}

.design-formula {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.02em;
  margin-bottom: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-subtle);
  border-left: 3px solid var(--color-primary);
}

.design-formula--fraction {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  max-width: 100%;
}

.formula-prefix,
.formula-unit {
  flex-shrink: 0;
  white-space: nowrap;
}

.formula-fraction {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}

.formula-num {
  padding: 0 0.625rem 0.2rem;
  line-height: 1.2;
  border-bottom: 1px solid var(--color-text);
}

.formula-den {
  padding: 0.2rem 0.625rem 0;
  line-height: 1.2;
}

.design-var-list,
.design-guidelines {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.85;
}

.design-var-list li + li,
.design-guidelines li + li {
  margin-top: var(--space-xs);
}

.design-note {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.85;
  padding: var(--space-lg);
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-subtle);
}

.product-detail-actions {
  margin-top: var(--space-2xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-border-light);
}

.product-detail-actions--split {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  min-width: 0;
}

.product-detail-actions--split .btn {
  flex: 1 1 14rem;
  max-width: 100%;
  box-sizing: border-box;
}

/* ---------- Zebra connector design guidelines (shared, once per language) ---------- */
.design-guide-section {
  margin-top: var(--space-xl);
  margin-bottom: 0;
  min-width: 0;
  max-width: 100%;
}

#silicone-panels > .design-guide-section {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: var(--space-xl) var(--space-2xl);
}

.design-guide-lead {
  margin: 0 0 var(--space-md);
  max-width: 46rem;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.design-guide-card {
  margin: 0 auto;
  max-width: 1100px;
  width: 100%;
  min-width: 0;
  padding: 0.75rem 0.75rem 0.5rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  box-sizing: border-box;
}

.design-guide-zoom {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
  line-height: 0;
}

.design-guide-zoom:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.design-guide-zoom img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
}

.design-guide-hint {
  margin: 0.5rem 0 0;
  padding: 0 0 0.125rem;
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--color-text-light);
  text-align: center;
}

.design-guide-section + .product-detail-actions {
  margin-top: var(--space-xl);
}

.design-guide-lightbox {
  width: 100vw;
  height: 100vh;
  max-width: 100vw;
  max-height: 100vh;
  margin: 0;
  padding: 0;
  border: none;
  background: rgba(7, 22, 40, 0.94);
}

.design-guide-lightbox::backdrop {
  background: rgba(7, 22, 40, 0.94);
}

.design-guide-lightbox__close {
  position: fixed;
  top: max(0.75rem, env(safe-area-inset-top));
  right: max(0.75rem, env(safe-area-inset-right));
  z-index: 2;
  min-height: 2.5rem;
  padding: 0.4rem 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: var(--radius-md);
  background: var(--color-accent);
  color: var(--color-white);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.design-guide-lightbox__close:hover,
.design-guide-lightbox__close:focus-visible {
  background: var(--color-primary-mid);
}

.design-guide-lightbox__scroller {
  height: 100%;
  overflow-x: auto;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  padding: 3.75rem 0.75rem 1.5rem;
  box-sizing: border-box;
  touch-action: pan-x pan-y pinch-zoom;
}

.design-guide-lightbox__scroller img {
  display: block;
  width: 100%;
  max-width: 1100px;
  height: auto;
  margin: 0 auto;
  object-fit: contain;
  object-position: center;
}

body.design-guide-lightbox-open {
  overflow: hidden;
}

.design-guide-lightbox.is-product-zoom .design-guide-lightbox__scroller {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 3.75rem 0.75rem 1.5rem;
}

.design-guide-lightbox.is-product-zoom .design-guide-lightbox__scroller img {
  width: auto;
  height: auto;
  max-width: 92vw;
  max-height: 88vh;
  min-width: 0;
  margin: 0;
  object-fit: contain;
  object-position: center;
}

@media (max-width: 768px) {
  #silicone-panels > .design-guide-section {
    padding: var(--space-xl);
  }

  .design-guide-card {
    padding: 0.5rem 0.5rem 0.375rem;
  }

  .design-guide-lightbox__scroller {
    padding: 3.5rem 0.5rem 1.25rem;
  }

  .design-guide-lightbox__scroller img {
    width: auto;
    max-width: none;
    min-width: 100%;
    height: auto;
  }

  .design-guide-lightbox.is-product-zoom .design-guide-lightbox__scroller {
    padding: 3.5rem 0.5rem 1.25rem;
    overflow: hidden;
  }

  .design-guide-lightbox.is-product-zoom .design-guide-lightbox__scroller img {
    width: auto;
    max-width: 92vw;
    min-width: 0;
    max-height: 88vh;
    height: auto;
  }
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-bg-subtle);
}

/* ---------- Contact Page ---------- */
.contact-page-grid {
  display: grid;
  grid-template-columns: minmax(0, 2.1fr) minmax(320px, 0.9fr);
  gap: 2rem;
  align-items: start;
}

.contact-page-grid.is-connector-open {
  grid-template-columns: minmax(0, 2.1fr) minmax(320px, 0.9fr);
  gap: 2rem;
}

.contact-form-wrap {
  min-width: 0;
  container-type: inline-size;
  container-name: contact-form;
}

.contact-form {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 1.5rem 1.75rem;
  max-width: 100%;
  box-sizing: border-box;
}

.contact-form .form-submit {
  width: auto;
  max-width: 100%;
}

.contact-info {
  min-width: 0;
  align-self: start;
  height: fit-content;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.5rem 1.5rem;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
  box-sizing: border-box;
}

@media (min-width: 769px) {
  .contact-info {
    position: sticky;
    top: 6.875rem;
  }
}

.contact-info-block {
  margin-bottom: 0;
}

.contact-info-block:last-child {
  margin-bottom: 0;
}

.contact-info-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.contact-info-text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.contact-info-text a {
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.contact-info-text a:hover {
  color: var(--color-primary-light);
}

.contact-info-text--en {
  font-size: var(--text-sm);
  margin-top: var(--space-xs);
  color: var(--color-text-light);
}

.contact-form-title {
  font-size: var(--text-xl);
  margin-bottom: 0.25rem;
}

.contact-form-desc {
  font-size: var(--text-sm);
  margin-bottom: 1rem;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.875rem 1.125rem;
}

.form-row .form-group {
  margin-bottom: 0;
}

.form-row + .form-group,
.form-row + .form-row {
  margin-top: 0.875rem;
}

.form-group {
  margin-bottom: 0.875rem;
}

.form-group--message {
  margin-bottom: 0.5rem;
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.form-label span {
  color: var(--color-text-light);
  font-weight: 400;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.55rem 0.8rem;
  font-family: inherit;
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  min-height: 42px;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary-light);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-status {
  margin-top: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  font-size: var(--text-sm);
  line-height: 1.6;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-subtle);
  color: var(--color-text);
}

.form-status[hidden] {
  display: none;
}

.form-status--success {
  border-color: var(--color-primary-light);
  background: var(--color-bg-subtle);
  color: var(--color-primary-dark);
}

.form-status--error {
  border-color: #c45c5c;
  background: #fdf4f4;
  color: #7a2e2e;
}

.form-status--error a {
  color: var(--color-primary);
  text-decoration: underline;
}

.form-status--error a:hover {
  color: var(--color-primary-light);
}

.form-submit {
  width: 100%;
  margin-top: 1rem;
}

.form-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.inquiry-result-dialog {
  width: min(28rem, calc(100vw - 2rem));
  max-width: calc(100vw - 2rem);
  margin: auto;
  padding: 0;
  border: none;
  background: transparent;
}

.inquiry-result-dialog::backdrop {
  background: rgba(7, 22, 40, 0.58);
}

.inquiry-result-dialog__card {
  padding: 1.75rem 1.5rem 1.4rem;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-white);
  box-shadow: 0 12px 40px rgba(7, 22, 40, 0.18);
  box-sizing: border-box;
}

.inquiry-result-dialog__title {
  margin: 0 0 0.75rem;
  font-size: var(--text-xl);
  line-height: 1.35;
  color: var(--color-primary-dark);
}

.inquiry-result-dialog__body {
  margin: 0 0 1.35rem;
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
}

.inquiry-result-dialog__action {
  width: 100%;
  min-height: 44px;
}

@media (max-width: 640px) {
  .inquiry-result-dialog {
    width: calc(100vw - 1.5rem);
  }

  .inquiry-result-dialog__card {
    padding: 1.5rem 1.15rem 1.25rem;
  }
}

/* ---------- Rubber Connector Specification Inquiry ---------- */
.connector-inquiry {
  margin: 1.25rem 0 1.5rem;
  padding: 1.25rem 1.15rem 1.35rem;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-white);
  box-shadow: 0 2px 10px rgba(6, 18, 32, 0.04);
  scroll-margin-top: 5.5rem;
}

.connector-inquiry[hidden] {
  display: none !important;
}

.connector-inquiry-title {
  margin: 0 0 0.4rem;
  font-size: clamp(1.15rem, 1rem + 0.6vw, 1.35rem);
  color: var(--color-primary-dark);
  line-height: 1.3;
  scroll-margin-top: 5.5rem;
}

.connector-inquiry-desc {
  margin: 0 0 1.15rem;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

.connector-inquiry-section + .connector-inquiry-section {
  margin-top: 1.35rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border-light);
}

.connector-inquiry-subtitle {
  margin: 0 0 0.85rem;
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.contact-form,
.connector-inquiry,
.connector-type-grid,
.connector-mode-grid,
.connector-dim-grid,
.connector-spec-visuals,
.connector-type-card,
.connector-live-preview,
.connector-dim-guide,
.connector-detail-frame {
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
}

.contact-form,
.connector-inquiry {
  overflow-x: clip;
}

.contact-form .form-input,
.contact-form .form-select,
.contact-form .form-textarea,
.contact-form .form-submit {
  min-height: 44px;
}

.connector-mode-picker {
  margin: 0 0 1.25rem;
  padding: 0;
  border: 0;
  min-width: 0;
}

.connector-mode-picker legend {
  padding: 0;
}

.connector-mode-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.75rem;
}

@container contact-form (min-width: 620px) {
  .connector-mode-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.connector-mode-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  min-width: 0;
  min-height: 44px;
  margin: 0;
  padding: 1rem 1rem 1.05rem;
  border: 1.5px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  cursor: pointer;
}

.connector-mode-card input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.connector-mode-card:hover,
.connector-mode-card:has(input:checked) {
  border-color: var(--color-primary);
}

.connector-mode-card:has(input:checked) {
  background: rgba(26, 86, 160, 0.06);
  box-shadow: 0 0 0 1px rgba(26, 86, 160, 0.12);
}

.connector-mode-card__title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-primary-dark);
}

.connector-mode-card__desc {
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-text-muted);
}

.connector-assist-note {
  margin: 0 0 1rem;
  padding: 0.85rem 0.95rem;
  border-radius: var(--radius-sm);
  background: var(--color-bg-subtle);
  color: var(--color-text);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.connector-upload-note {
  margin: 0.35rem 0 0;
  padding: 0.85rem 0.95rem;
  border: 1px dashed rgba(18, 61, 114, 0.28);
  border-radius: var(--radius-sm);
  background: #f8fbff;
}

.connector-upload-note p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-text-muted);
}

.connector-upload-note__title {
  margin-bottom: 0.35rem !important;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.connector-upload-note a {
  color: var(--color-primary);
  text-decoration: underline;
}

.connector-inquiry.is-assist-mode .connector-upload-note--compact {
  display: none;
}

.connector-type-group {
  min-width: 0;
}

#connector-ir-types {
  scroll-margin-top: 5.5rem;
}

.connector-type-group + .connector-type-group,
.connector-type-more {
  margin-top: 1.15rem;
}

.connector-type-more {
  min-width: 0;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  padding: 0.15rem 0.75rem 0.75rem;
}

.connector-type-more__summary,
.connector-advanced__summary {
  display: flex;
  align-items: center;
  min-height: 44px;
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
  list-style: none;
}

.connector-type-more__summary::-webkit-details-marker,
.connector-advanced__summary::-webkit-details-marker {
  display: none;
}

.connector-type-more__summary::after,
.connector-advanced__summary::after {
  content: "+";
  margin-left: auto;
  font-size: 1.1rem;
  line-height: 1;
}

.connector-type-more[open] > .connector-type-more__summary::after,
.connector-advanced[open] > .connector-advanced__summary::after {
  content: "–";
}

.connector-advanced {
  margin-top: 1.15rem;
  padding-top: 0.35rem;
  border-top: 1px solid var(--color-border-light);
}

.connector-custom-panel[hidden],
.connector-spec-fill[hidden],
[data-mode-panel][hidden],
#connector-type-extras[hidden],
#connector-custom-check-wrap[hidden],
#connector-dim-guide-wrap[hidden] {
  display: none !important;
}

.connector-spec-fill {
  scroll-margin-top: 5.5rem;
}

.connector-spec-visuals {
  display: grid;
  gap: 0.85rem;
  margin-bottom: 1.05rem;
}

@container contact-form (min-width: 620px) {
  .connector-spec-visuals:has(.connector-live-preview:not([hidden])) {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
  }

  .connector-live-preview {
    max-width: 100%;
  }
}

.connector-live-preview {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-width: 0;
  padding: 0.8rem 0.85rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-subtle);
}

.connector-live-preview[hidden] {
  display: none !important;
}

.connector-live-preview.is-text-only .connector-live-preview__media {
  display: none;
}

.connector-live-preview__copy {
  display: grid;
  gap: 0.2rem;
}

.connector-live-preview__kicker {
  margin: 0;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.connector-live-preview__name {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-primary-dark);
}

.connector-live-preview__hint {
  margin: 0.15rem 0 0;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.connector-live-preview__media {
  min-width: 0;
  padding: 0.15rem 0.1rem;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  background: #fff;
  box-sizing: border-box;
  overflow: hidden;
}

.connector-live-preview__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  object-fit: contain;
  box-sizing: border-box;
  background: #fff;
}

.connector-live-preview__img[hidden] {
  display: none !important;
}

.connector-live-preview__legend {
  margin: 0.2rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.12rem;
  text-align: center;
  font-size: var(--text-xs);
  line-height: 1.45;
  color: var(--color-text-muted);
}

.connector-live-preview__legend[hidden] {
  display: none !important;
}

.connector-dim-guide-wrap {
  min-width: 0;
  grid-column: 1 / -1;
}

.connector-dim-guide-wrap .connector-inquiry-subtitle {
  margin-bottom: 0.65rem;
}

.connector-type-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

@container contact-form (min-width: 720px) {
  .connector-type-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.connector-type-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 44px;
  height: auto;
  margin: 0;
  padding: 0.7rem 0.6rem 0.75rem;
  border: 1.5px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  cursor: pointer;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

.connector-type-card:hover {
  border-color: rgba(18, 61, 114, 0.35);
}

.connector-type-card:has(input:checked),
.connector-type-card.is-selected {
  border-color: var(--color-primary);
  background: rgba(26, 86, 160, 0.06);
  box-shadow: 0 0 0 1px rgba(26, 86, 160, 0.12);
}

.connector-type-card input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

.connector-type-card__check {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  z-index: 3;
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 999px;
  border: 1.5px solid rgba(18, 61, 114, 0.25);
  background: var(--color-white);
}

.connector-type-card:has(input:checked) .connector-type-card__check,
.connector-type-card.is-selected .connector-type-card__check {
  border-color: var(--color-primary);
  background: var(--color-primary);
  box-shadow: inset 0 0 0 2px #fff;
}

.connector-type-card__media {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: clamp(7.5rem, 18vw, 11rem);
  aspect-ratio: 11 / 8;
  margin-bottom: 0.55rem;
  padding: 0;
  border-radius: var(--radius-sm);
  background: #fff;
  overflow: hidden;
  box-sizing: border-box;
  pointer-events: none;
}

.connector-type-card--dimensioned .connector-type-card__media {
  aspect-ratio: 1 / 1;
  min-height: clamp(11rem, 24vw, 15rem);
  padding: 0.05rem;
}

.connector-type-card--dimensioned .connector-type-card__media img,
.connector-type-card--dimensioned .connector-type-svg {
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: 100%;
}

.connector-type-card__media img,
.connector-type-svg {
  width: 100%;
  max-width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  object-position: center;
  box-sizing: border-box;
  pointer-events: none;
  background: #fff;
}

.connector-type-card__media--text {
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.75rem 0.5rem;
  aspect-ratio: 4 / 3;
  border: 1px dashed rgba(18, 61, 114, 0.22);
  background: #f8fbff;
}

.connector-type-card__text-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  text-align: center;
  white-space: normal;
}

.connector-type-card__text-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: center;
  white-space: normal;
  line-height: 1.4;
}

.connector-type-card__text-note {
  font-size: 0.7rem;
  line-height: 1.4;
  color: var(--color-text-muted);
  text-align: center;
  overflow-wrap: anywhere;
}

.connector-type-card--ir {
  justify-content: flex-start;
}

.connector-type-card--ir .connector-type-card__text-meta,
.connector-type-card--ir .connector-type-card__text-note {
  margin-top: 0.12rem;
}

.connector-type-card__media--icon {
  color: var(--color-primary-light);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.connector-type-card__name {
  display: block;
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-primary-dark);
  white-space: normal;
  overflow-wrap: anywhere;
}

.connector-dim-guide {
  margin: 0 0 1rem;
  padding: 0.4rem 0.3rem;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  background: #fff;
  box-sizing: border-box;
  overflow: hidden;
}

.connector-dim-guide__frame {
  position: relative;
  overflow: hidden;
  width: 100%;
  margin-inline: auto;
}

.connector-dim-guide[data-dim-side="left"] .connector-dim-guide__frame {
  max-width: 36rem;
  aspect-ratio: 450 / 231;
}

.connector-dim-guide[data-dim-side="right"] .connector-dim-guide__frame {
  max-width: 26rem;
  aspect-ratio: 246 / 231;
}

.connector-dim-guide[data-dim-side="ir"] .connector-dim-guide__frame {
  max-width: 36rem;
}

.connector-dim-guide__legend {
  margin: 0.45rem 0 0;
  padding: 0.15rem 0.35rem 0.1rem;
  list-style: none;
  display: grid;
  gap: 0.12rem;
  text-align: center;
  font-size: var(--text-xs);
  line-height: 1.45;
  color: var(--color-text-muted);
}

.connector-dim-guide__legend[hidden] {
  display: none !important;
}

@media (min-width: 641px) {
  .connector-type-card__media {
    width: 91%;
    margin-inline: auto;
    min-height: clamp(6.85rem, 16.4vw, 10rem);
  }

  .connector-type-card--dimensioned .connector-type-card__media {
    min-height: clamp(10rem, 21.8vw, 13.65rem);
  }

  .connector-live-preview__media {
    width: 91%;
    margin-inline: auto;
  }

  .connector-dim-guide[data-dim-side="left"] .connector-dim-guide__frame {
    max-width: 32.75rem;
  }

  .connector-dim-guide[data-dim-side="right"] .connector-dim-guide__frame {
    max-width: 23.65rem;
  }

  .connector-dim-guide[data-dim-side="ir"] .connector-dim-guide__frame {
    max-width: 32.75rem;
  }
}

.connector-dim-photo,
.connector-dim-svg {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  object-fit: contain;
  box-sizing: border-box;
  background: #fff;
}

.connector-dim-guide[data-dim-side="left"] .connector-dim-svg,
.connector-dim-guide[data-dim-side="right"] .connector-dim-svg {
  position: absolute;
  top: 0;
  height: 100%;
  width: auto;
  max-width: none;
  margin: 0;
}

.connector-dim-guide[data-dim-side="left"] .connector-dim-svg {
  left: 0;
}

.connector-dim-guide[data-dim-side="right"] .connector-dim-svg {
  right: 0;
  left: auto;
}

.connector-dim-guide[data-dim-side="ir"] .connector-dim-svg {
  position: static;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
}

.connector-dim-guide .connector-dim-svg[hidden] {
  display: none !important;
}

.connector-dim-fields-title {
  margin-top: 0.35rem;
}

.connector-dim-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem 1rem;
}

.connector-dim-grid .form-hint {
  grid-column: 1 / -1;
  margin: -0.15rem 0 0;
  font-size: var(--text-xs);
  color: var(--color-text-light);
}

.connector-unit {
  margin-left: 0.2rem;
  font-weight: 500;
  color: var(--color-text-light);
}

.connector-inquiry .form-input,
.connector-inquiry .form-select,
.connector-inquiry .form-textarea {
  min-height: 44px;
}

.connector-inquiry .form-textarea {
  min-height: 120px;
  resize: vertical;
}

.connector-extra-block[hidden],
.connector-field-wrap[hidden] {
  display: none !important;
}

.connector-detail-block {
  margin: 0 0 1.15rem;
}

.connector-detail-title {
  margin: 0 0 0.65rem;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary-dark);
}

.connector-detail-frame {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  padding: 0.4rem 0.25rem;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  background: #fff;
  box-sizing: border-box;
  overflow: hidden;
}

.connector-detail-photo,
.connector-detail-svg {
  display: block;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  height: auto;
  margin: 0 auto;
  object-fit: contain;
  object-position: center;
  box-sizing: border-box;
  background: #fff;
}

.connector-detail-legend {
  margin-top: 0.85rem;
  display: grid;
  gap: 0.75rem;
}

.connector-detail-legend__codes {
  display: grid;
  gap: 0.25rem;
}

.connector-detail-legend__codes p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-text-muted);
}

.connector-detail-legend__codes strong {
  color: var(--color-primary-dark);
  font-weight: 700;
}

.connector-detail-legend__swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
}

.connector-swatch {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.4;
}

.connector-swatch i {
  display: inline-block;
  width: 1.1rem;
  height: 1.1rem;
  border: 1.5px solid var(--color-primary-dark);
  border-radius: 2px;
  flex-shrink: 0;
}

.connector-swatch--conductive i {
  background: #123d72;
}

.connector-swatch--insulative i {
  background: #fff;
}

.connector-swatch--sponge i {
  background:
    radial-gradient(circle at 30% 30%, #123d72 0 1.2px, transparent 1.4px),
    radial-gradient(circle at 70% 65%, #123d72 0 1px, transparent 1.2px),
    #eef3f8;
  background-size: 6px 6px;
}

.connector-choice-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 0.85rem;
}

.connector-choice {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 44px;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  background: var(--color-bg-subtle);
  font-size: var(--text-sm);
  color: var(--color-text);
  cursor: pointer;
}

.connector-choice:has(input:checked) {
  border-color: var(--color-primary);
  background: rgba(26, 86, 160, 0.07);
  color: var(--color-primary-dark);
}

.connector-choice input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--color-primary);
}

.connector-custom-check {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  margin: 0 0 0.85rem;
  padding: 0.85rem 0.9rem;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  background: var(--color-bg-subtle);
  cursor: pointer;
  min-height: 44px;
}

.connector-custom-check input {
  margin-top: 0.2rem;
  width: 1.05rem;
  height: 1.05rem;
  flex-shrink: 0;
  accent-color: var(--color-primary);
}

.connector-custom-check span {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-text);
}

.connector-inquiry.is-custom-focus .connector-custom-panel {
  border-color: rgba(26, 86, 160, 0.35);
  box-shadow: 0 0 0 3px rgba(26, 86, 160, 0.08);
}

.connector-custom-panel {
  padding: 0.85rem 0.9rem 1rem;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  background: #f8fbff;
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease;
}

html[lang="en"] .connector-inquiry-desc {
  font-size: 0.875rem;
  line-height: 1.55;
}

@media (max-width: 768px) {
  .contact-info {
    position: static;
    order: -1;
  }

  .contact-page-grid,
  .contact-page-grid.is-connector-open {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 640px) {
  .connector-inquiry {
    padding: 1rem 0.85rem 1.15rem;
  }

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

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

  .connector-type-card__media {
    min-height: 10rem;
    aspect-ratio: 16 / 10;
  }

  .connector-type-card--dimensioned .connector-type-card__media {
    min-height: 14rem;
    aspect-ratio: 1 / 1;
  }

  .connector-dim-guide {
    padding: 0.3rem 0.15rem;
  }

  .connector-live-preview {
    padding: 0.7rem 0.75rem 0.8rem;
  }
}

@media (max-width: 430px) {
  .contact-form {
    padding: 1.15rem 0.85rem;
  }

  .connector-inquiry {
    padding: 0.85rem 0.6rem 1rem;
  }

  .connector-type-card {
    padding: 0.55rem 0.4rem 0.65rem;
  }

  .connector-type-card__name {
    font-size: 0.75rem;
  }

  .connector-mode-card {
    padding: 0.9rem 0.85rem 0.95rem;
  }
}

/* ---------- Heating Products ---------- */
.product-detail--heating {
  border: none;
  background: transparent;
}

.product-detail-body--heating {
  padding: 0;
}

.heating-hero {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.heating-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-2xl);
  align-items: center;
}

.heating-hero-eyebrow {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.heating-hero-title {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-3xl));
  color: var(--color-primary-dark);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.heating-hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text);
  font-weight: 500;
  margin-bottom: var(--space-lg);
  line-height: 1.5;
}

.heating-hero-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.85;
  margin-bottom: var(--space-xl);
}

.heating-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.heating-hero-visual {
  min-width: 0;
}

.heating-hero-showcase {
  width: 100%;
  margin: 0;
  min-height: 420px;
  max-height: 520px;
  height: clamp(420px, 36vw, 520px);
  padding: 0.375rem;
  background: #ffffff;
  border: 1px solid #e9edf3;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.heating-hero-showcase .product-photo {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  object-fit: contain;
  object-position: center;
}

.heating-section-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-top: calc(var(--space-sm) * -1);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.heating-patent-inner {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, #1a3a5c 100%);
  border: 1px solid var(--color-primary-dark);
  padding: var(--space-2xl);
  color: var(--color-white);
}

.heating-patent .product-detail-section-title,
.heating-patent .heating-section-subtitle {
  color: var(--color-white);
}

.heating-patent-headline {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-md);
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.heating-patent .product-detail-text {
  color: rgba(255, 255, 255, 0.88);
  max-width: 42rem;
  margin-bottom: var(--space-lg);
}

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

.heating-patent-region {
  padding: var(--space-xl);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.heating-patent-region-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-white);
  letter-spacing: 0.06em;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  line-height: 1.4;
}

.heating-patent-numbers {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.heating-patent-number {
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.92);
  letter-spacing: 0.02em;
  line-height: 1.5;
  word-break: break-word;
  overflow-wrap: break-word;
}

.heating-patent-certificate {
  margin-top: var(--space-2xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.heating-patent-certificate-slot {
  max-width: 480px;
}

.heating-patent-certificate-slot .visual-placeholder--patent-cert {
  min-height: 200px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px dashed rgba(255, 255, 255, 0.22);
  color: rgba(255, 255, 255, 0.88);
}

.heating-patent-certificate-slot .visual-placeholder--patent-cert small {
  color: rgba(255, 255, 255, 0.55);
}

.heating-core-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-2xl);
  align-items: start;
}

.heating-core-section {
  border-color: var(--color-primary-light);
  box-shadow: 0 1px 0 rgba(26, 58, 92, 0.06);
}

.heating-core-title {
  font-size: clamp(var(--text-xl), 3vw, var(--text-2xl));
  margin-bottom: var(--space-md);
}

.heating-core-intro {
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.85;
  max-width: 42rem;
  margin-bottom: var(--space-2xl);
}

.heating-core-visual--primary {
  margin-bottom: var(--space-2xl);
}

.heating-core-visual--primary .visual-placeholder--tall {
  min-height: 360px;
  aspect-ratio: 16 / 9;
  max-height: 420px;
}

.heating-core-features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-lg);
}

.heating-core-feature {
  padding: var(--space-xl);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
}

.heating-core-feature-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-md);
  letter-spacing: 0.04em;
}

.heating-core-feature-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin: 0;
}

.heating-core-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.heating-info-list {
  margin: 0;
  padding: 0;
}

.heating-info-item {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.heating-info-item:first-child {
  padding-top: 0;
}

.heating-info-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.heating-info-item dt {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.04em;
}

.heating-info-item dd {
  margin: 0;
  font-size: var(--text-sm);
}

.heating-core-visual .visual-placeholder--tall {
  min-height: 320px;
  aspect-ratio: 4 / 3;
}

.products-page .heating-core-gallery .product-showcase,
.products-page .heating-core-visual .product-showcase {
  background: #ffffff;
  border: 1px solid #e9edf3;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
}

.heating-visual-note {
  margin-top: var(--space-md);
  font-size: var(--text-xs);
  color: var(--color-text-light);
  text-align: center;
}

.heating-ir-subtitle {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.heating-ir-headline {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-xl);
  line-height: 1.4;
}

.heating-ir-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-2xl);
  align-items: start;
  padding: var(--space-2xl);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
}

.heating-ir-intro {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.85;
  margin-bottom: var(--space-xl);
}

.heating-ir-stat-hero {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border-light);
}

.heating-ir-stat-value {
  font-size: clamp(3rem, 7vw, 4.5rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.heating-ir-stat-label {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.4;
}

.heating-ir-stats-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
  align-items: start;
}

.heating-ir-stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  min-width: 0;
}

.heating-ir-stat-item--org {
  min-width: 8.5rem;
}

.heating-ir-stat-num,
.heating-ir-stat-org {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.35;
}

.heating-ir-stat-org {
  white-space: nowrap;
}

.heating-ir-stat-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.4;
}

.heating-ir-report-no {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  line-height: 1.5;
  letter-spacing: 0.02em;
  word-break: break-word;
}

.heating-ir-report-figure {
  margin: 0;
  min-width: 0;
}

.heating-ir-report-caption {
  margin-top: var(--space-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary-dark);
  text-align: center;
  line-height: 1.5;
}

.heating-report-view-link {
  display: block;
  width: 100%;
  margin-top: var(--space-md);
  padding: 0;
  border: none;
  background: none;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.04em;
  text-align: center;
  line-height: 1.5;
  cursor: default;
}

.heating-report-view-link:not(:disabled) {
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.heating-report-view-link:not(:disabled):hover {
  color: var(--color-primary-light);
}

.heating-report-trigger {
  display: block;
  width: 100%;
  padding: 0;
  border: none;
  background: none;
  cursor: default;
  text-align: left;
}

.heating-report-trigger:not(:disabled),
.heating-report-trigger.is-ready {
  cursor: pointer;
}

.heating-report-trigger:not(:disabled):hover .heating-report-thumb,
.heating-report-trigger.is-ready:hover .heating-report-thumb {
  border-color: var(--color-primary-light);
}

.heating-report-thumb {
  width: 100%;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.heating-report-thumb--featured {
  min-height: 280px;
  padding: var(--space-md);
}

.heating-report-thumb.is-empty {
  min-height: 280px;
  background: var(--color-bg-muted);
}

.heating-report-gallery .heating-report-thumb {
  height: 240px;
  padding: var(--space-md);
}

.heating-report-gallery .heating-report-thumb.is-empty {
  height: 240px;
}

.heating-report-image {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
}

.heating-report-image.is-error,
.heating-report-image[hidden] {
  display: none;
}

.heating-safety-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.heating-cert-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.heating-cert-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: #ffffff;
  border: 1px solid #e5eaf1;
  border-radius: var(--radius-lg);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
  overflow: hidden;
}

.heating-cert-card-preview {
  display: block;
  padding: var(--space-md);
  background: #ffffff;
  border-bottom: 1px solid #e5eaf1;
  aspect-ratio: 210 / 297;
}

.heating-cert-card-preview:hover .heating-cert-card-image {
  opacity: 0.92;
}

.heating-cert-card-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  background: #ffffff;
  transition: opacity var(--transition-fast);
}

.heating-cert-card-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-lg);
  flex: 1;
}

.heating-cert-card-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.4;
  margin: 0;
}

.heating-cert-card-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin: 0;
}

.heating-cert-card-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: auto;
  padding: 0.625rem 1.125rem;
  min-height: 44px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast);
}

.heating-cert-card-action:hover {
  color: var(--color-primary-dark);
  background: var(--color-white);
  border-color: rgba(18, 61, 114, 0.22);
}

.heating-report-gallery--pending {
  grid-template-columns: minmax(0, 1fr);
  max-width: 360px;
}

.heating-safety-item {
  padding: var(--space-xl);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
}

.heating-safety-item-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-md);
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.heating-safety-item-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin: 0;
}

.heating-safety-note {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: var(--space-xl);
}

.heating-report-gallery-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  letter-spacing: 0.06em;
  margin-bottom: var(--space-lg);
  line-height: 1.4;
}

.heating-report-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-lg);
}

.heating-report-item {
  margin: 0;
  min-width: 0;
}

.heating-report-caption {
  margin-top: var(--space-md);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.5;
}

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

.heating-app-card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  padding: var(--space-lg);
  text-align: center;
}

.heating-app-visual {
  min-width: 0;
}

.heating-app-showcase {
  width: 100%;
  margin: 0 0 var(--space-md);
  min-height: 220px;
  max-height: 280px;
  height: clamp(220px, 22vw, 280px);
  padding: 0.375rem;
  background: #ffffff;
  border: 1px solid #e9edf3;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.heating-app-showcase .product-photo {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  object-fit: contain;
  object-position: center;
}

.heating-app-visual .visual-placeholder {
  min-height: 180px;
  margin-bottom: var(--space-md);
}

.heating-app-name {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-xs);
}

.heating-app-note {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  letter-spacing: 0.04em;
}

.heating-process {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm) var(--space-md);
  list-style: none;
  margin: 0;
  padding: var(--space-xl);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
}

.heating-process-step {
  flex: 0 0 auto;
}

.heating-process-label {
  display: inline-block;
  padding: var(--space-md) var(--space-lg);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary-dark);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  white-space: nowrap;
}

.heating-process-arrow {
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

.heating-cert-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--color-border-light);
  background: var(--color-white);
}

.heating-cert-item {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-sm) var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.heating-cert-item:last-child {
  border-bottom: none;
}

.heating-cert-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
}

.heating-cert-status {
  font-size: var(--text-xs);
  color: var(--color-text-light);
}

.heating-cert-actions {
  margin-top: var(--space-xl);
}

.heating-inline-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.heating-inline-link:hover {
  color: var(--color-primary-dark);
}

.heating-patent-actions,
.heating-core-feature-link {
  margin-top: var(--space-md);
}

.heating-quality-entry {
  margin: var(--space-xl) 0;
  text-align: center;
}

.heating-report-thumb.is-empty {
  flex-direction: column;
  gap: var(--space-xs);
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.heating-report-thumb.is-empty small {
  font-size: var(--text-xs);
  color: var(--color-text-light);
}

.heating-cta {
  margin-top: var(--space-2xl);
  padding: clamp(1.75rem, 3vw, 2.25rem) clamp(1.25rem, 3vw, 2rem);
  text-align: center;
  background: var(--color-primary-dark);
  border: 1px solid var(--color-primary-dark);
  color: var(--color-white);
}

.heating-cta-title {
  font-size: var(--text-xl);
  color: var(--color-white);
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.heating-cta-desc {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: var(--space-lg);
  line-height: 1.8;
  max-width: 46rem;
  margin-left: auto;
  margin-right: auto;
  word-break: normal;
  overflow-wrap: anywhere;
  line-break: strict;
}

.heating-cta-desc-line {
  display: block;
}

.heating-cta--element .heating-cta-desc {
  max-width: 43.75rem;
}

.product-detail-body--heating .product-detail-section {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: var(--space-2xl);
  margin-bottom: var(--space-xl);
}

.product-detail-body--heating .heating-hero,
.product-detail-body--heating .heating-patent {
  margin-bottom: var(--space-xl);
}

.product-detail-body--heating .heating-patent {
  padding: 0;
  border: none;
  background: transparent;
}

.product-detail-body--heating .heating-cta {
  margin-bottom: 0;
}

.product-detail-body--heating .heating-cta .btn-primary {
  background: var(--color-white);
  color: var(--color-primary-dark);
  border-color: var(--color-white);
}

.product-detail-body--heating .heating-cta .btn-primary:hover {
  background: var(--color-bg-subtle);
  border-color: var(--color-bg-subtle);
}

/* ---------- Heating Module v2 blocks ---------- */
.heating-block {
  margin-bottom: var(--space-2xl);
  padding: var(--space-2xl);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
}

.heating-block-eyebrow {
  margin: 0 0 var(--space-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.heating-block-title {
  margin: 0 0 var(--space-lg);
  font-size: clamp(var(--text-xl), 3vw, var(--text-2xl));
  color: var(--color-primary-dark);
  line-height: 1.3;
}

.heating-block-text {
  margin: 0 0 var(--space-md);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.85;
  max-width: 42rem;
}

.heating-block-text:last-child {
  margin-bottom: 0;
}

.heating-block-note,
.heating-apps-footnote,
.heating-compare-note {
  margin: var(--space-lg) 0 0;
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.65;
  max-width: 42rem;
}

.heating-block-label {
  margin: var(--space-lg) 0 var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
}

.heating-block-grid {
  display: grid;
  gap: var(--space-2xl);
  align-items: center;
}

.heating-block-grid--intro,
.heating-block-grid--materials {
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
}

.heating-block-visual {
  margin: 0;
  padding: var(--space-md);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
}

.heating-block-visual .product-photo {
  display: block;
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  object-position: center;
}

.heating-fit-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: 0;
  padding: 0;
  list-style: none;
}

.heating-fit-list li {
  padding: 0.4rem 0.75rem;
  font-size: var(--text-sm);
  color: var(--color-primary-dark);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
}

.heating-material-schematic {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
}

.heating-material-layer {
  padding: var(--space-md) var(--space-lg);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary-dark);
  text-align: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
}

.heating-material-layer--core {
  background: rgba(26, 58, 92, 0.06);
  border-color: rgba(26, 58, 92, 0.18);
}

.heating-block--features {
  padding: 1.75rem 1.25rem;
}

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

.heating-feature-card {
  grid-column: span 2;
  padding: var(--space-xl);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
  min-width: 0;
}

.heating-feature-card:nth-child(4) {
  grid-column: 2 / span 2;
}

.heating-feature-card:nth-child(5) {
  grid-column: 4 / span 2;
}

.heating-feature-grid--four {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.heating-feature-grid--four .heating-feature-card,
.heating-feature-grid--four .heating-feature-card:nth-child(4),
.heating-feature-grid--four .heating-feature-card:nth-child(5) {
  grid-column: auto;
}

.heating-feature-grid--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 2rem;
}

.heating-feature-grid--three .heating-feature-card {
  grid-column: auto;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  height: 100%;
  padding: 2.75rem 1.25rem;
}

.heating-feature-grid--three .heating-feature-card-title {
  width: 100%;
}

.heating-feature-grid--three .heating-feature-card-text {
  flex: 1;
  width: 100%;
  font-size: 1rem;
  line-height: 1.9;
  word-break: normal;
  overflow-wrap: normal;
  line-break: strict;
}

.type-selector--heating {
  grid-template-columns: 1fr;
}

.heating-hero-copy {
  max-width: 34rem;
}

.heating-hero-title-line {
  display: inline;
}

.heating-hero--module {
  padding: clamp(1.5rem, 3vw, 2.25rem) clamp(1.25rem, 3vw, 2rem);
  margin-bottom: var(--space-lg);
}

.heating-hero--module + .heating-apps-section {
  margin-top: 0;
}

.heating-apps-section {
  margin-bottom: var(--space-xl);
  height: auto;
  max-height: none;
  overflow: visible;
}

.heating-apps-section .heating-block-title {
  margin-bottom: var(--space-sm);
}

.heating-apps-section .heating-section-subtitle {
  margin-bottom: var(--space-lg);
}

.heating-apps-section > .heating-block-text {
  max-width: none;
}

.heating-apps-section > .heating-block-text:last-of-type {
  margin-bottom: var(--space-lg);
}

.heating-hero-grid--module {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(1.25rem, 2.5vw, 1.75rem);
  align-items: center;
}

.heating-hero--module .heating-hero-content {
  align-self: center;
  min-width: 0;
}

.heating-hero--module .heating-hero-eyebrow {
  margin-bottom: var(--space-sm);
}

.heating-hero--module .heating-hero-title {
  font-size: clamp(2rem, 3.6vw, 3.25rem);
  line-height: 1.12;
  letter-spacing: 0.01em;
  margin-bottom: var(--space-sm);
  max-width: 11em;
}

.heating-hero--module .heating-hero-subtitle {
  margin-bottom: var(--space-md);
  line-height: 1.45;
}

.heating-hero--module .heating-hero-desc {
  line-height: 1.75;
  margin-bottom: 0.75rem;
}

.heating-hero--module .heating-hero-copy .heating-hero-desc:last-child {
  margin-bottom: 0;
}

.heating-hero--module .heating-hero-actions {
  margin-top: var(--space-lg);
  gap: var(--space-sm);
}

.heating-hero-visual--module {
  min-width: 0;
}

.heating-overview-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  width: 100%;
}

.heating-overview-item {
  margin: 0;
  min-width: 0;
  width: 100%;
  padding: 0.375rem 0.5rem;
  background: #ffffff;
  border: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.heating-overview-item .product-photo,
.heating-gallery-image {
  display: block;
  width: auto;
  height: auto;
  object-fit: contain;
  object-position: center;
}

/* 圖1：直式模組 — 放大產品本體、減少白邊 */
.heating-overview-item--module {
  height: 200px;
  padding: 0.25rem 0.375rem;
}

.heating-gallery-image--01 {
  max-width: 100%;
  max-height: 100%;
  transform: scale(1.32);
  transform-origin: center center;
}

/* 圖2：長條模組 — 完整顯示產品本體與線材 */
.heating-overview-item--strip {
  height: 168px;
  padding: 0.5rem 0.75rem;
}

.heating-gallery-image--02 {
  width: auto;
  max-width: 96%;
  max-height: 92%;
  object-fit: contain;
}

/* 圖3：線材接頭模組 — 略縮，保留線材與接頭可辨識 */
.heating-overview-item--wired {
  height: 168px;
  padding: 0.375rem 0.5rem;
}

.heating-gallery-image--03 {
  max-width: 72%;
  max-height: 86%;
}

.heating-hero-showcase--module {
  min-height: 0;
  max-height: none;
  height: auto;
  aspect-ratio: 1 / 1;
  padding: clamp(1.25rem, 2.5vw, 1.75rem);
  box-shadow: none;
  border: 1px solid var(--color-border-light);
}

.heating-hero-showcase--module .product-photo {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.heating-section-inner {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
}

.heating-hero--element {
  padding: clamp(1.5rem, 2.5vw, 2.25rem) clamp(1.25rem, 2.5vw, 1.75rem);
  margin-bottom: var(--space-lg);
}

.heating-hero-grid--element {
  grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.72fr);
  gap: clamp(1.25rem, 2.5vw, 2rem);
  align-items: center;
}

.heating-hero-title--element {
  font-size: clamp(1.875rem, 2.5vw, 3.25rem);
  line-height: 1.12;
  max-width: none;
  margin-bottom: var(--space-sm);
}

.heating-hero--element .heating-hero-eyebrow {
  margin-bottom: 0;
}

.heating-hero-label-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  margin-bottom: var(--space-sm);
}

.heating-hero-patent-note {
  margin: 0 0 var(--space-md);
  max-width: 36rem;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

.patent-tech-badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.3;
  color: var(--color-primary-dark);
  background: #eef3f8;
  border: 1px solid rgba(15, 45, 90, 0.18);
  border-radius: 3px;
  white-space: nowrap;
}

.heating-hero--element .heating-hero-subtitle {
  font-size: var(--text-base);
  margin-bottom: var(--space-md);
  line-height: 1.45;
}

.heating-hero--element .heating-hero-copy {
  max-width: none;
}

.heating-hero--element .heating-hero-desc {
  font-size: var(--text-sm);
  line-height: 1.75;
  margin-bottom: 0.75rem;
  word-break: normal;
  overflow-wrap: anywhere;
  line-break: strict;
}

.heating-hero--element .heating-hero-copy .heating-hero-desc:last-child {
  margin-bottom: 0;
}

.heating-hero-visual--element {
  align-self: center;
}

.heating-hero--element .heating-product-gallery {
  gap: 1.25rem;
}

.heating-product-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  width: 100%;
}

.heating-hero--element .heating-product-gallery-item {
  aspect-ratio: 4 / 5;
  padding: 0.25rem 0.3125rem;
}

.heating-product-gallery-item {
  margin: 0;
  aspect-ratio: 4 / 5;
  background: #ffffff;
  border: 1px solid var(--color-border-light);
  padding: 0.625rem 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.heating-product-gallery-item .product-photo {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
}

.heating-hero--element .heating-product-gallery-item .product-photo {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  padding: 0;
  margin: 0;
  transform: scale(1.06);
}

.heating-fir-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
  gap: clamp(1rem, 1.8vw, 1.5rem);
  align-items: start;
  margin-bottom: var(--space-xl);
}

.heating-fir-title {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
  width: max-content;
  max-width: 100%;
  font-size: clamp(2.125rem, 3vw, 2.75rem);
  line-height: 1.05;
  margin-bottom: var(--space-md);
  overflow-wrap: normal;
  word-break: keep-all;
  line-break: strict;
  hyphens: none;
}

.heating-fir-title__top,
.heating-fir-title__bottom {
  display: block;
  align-self: flex-start;
}

.heating-fir-title__bottom {
  white-space: nowrap;
}

.heating-fir-title__cross {
  align-self: center;
  display: block;
  font-size: 0.6em;
  line-height: 1;
  margin: 0.35em 0;
  padding: 0;
  font-weight: 600;
  color: var(--color-primary);
}

.heating-fir-copy {
  min-width: 0;
}

.heating-fir-copy .heating-block-text {
  max-width: 32rem;
  font-size: var(--text-sm);
  line-height: 1.75;
  margin-bottom: 0.75rem;
}

.heating-fir-copy .heating-block-note {
  margin-top: var(--space-md);
  font-size: 0.8125rem;
  line-height: 1.6;
}

.heating-fir-thermal {
  margin: 0;
  min-width: 0;
}

.heating-fir-thermal-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem;
  background: #ffffff;
  border: 1px solid var(--color-border-light);
  overflow: hidden;
}

.heating-fir-thermal-frame .product-photo {
  display: block;
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: contain;
  object-position: center;
}

.heating-fir-card-title {
  margin: 0 0 0.625rem;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.35;
  overflow-wrap: normal;
  word-break: normal;
  line-break: strict;
}

.heating-fir-card-text {
  margin: 0;
  font-size: 0.96875rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  overflow-wrap: normal;
  word-break: normal;
  line-break: strict;
}

.heating-fir-thermal-caption {
  margin-top: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary-dark);
  text-align: center;
  line-height: 1.45;
  overflow-wrap: normal;
  word-break: keep-all;
  line-break: strict;
}

.heating-fir-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.125rem;
  align-items: stretch;
}

.heating-fir-visual-section .heating-section-inner {
  min-width: 0;
}

.heating-fir-visual-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  min-width: 0;
}

.heating-fir-visual-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  margin: 0;
  padding: var(--space-md);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  box-shadow: 0 1px 2px rgba(10, 31, 61, 0.04);
}

.heating-fir-visual-zoom {
  display: block;
  position: relative;
  width: 100%;
  min-width: 0;
  height: auto;
}

.heating-fir-visual-zoom.product-type-zoom {
  height: auto;
}

.heating-fir-visual-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 0;
  padding: 0.5rem;
  overflow: hidden;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
  box-sizing: border-box;
}

.heating-fir-visual-image,
.heating-fir-visual-frame .heating-fir-visual-image {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
}

.heating-fir-visual-caption {
  margin-top: var(--space-md);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  text-align: center;
  line-height: 1.4;
}

.heating-fir-card {
  display: flex;
  flex-direction: column;
  height: auto;
  min-height: 0;
  min-width: 0;
  padding: 1.625rem 1.625rem;
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  overflow: visible;
}

@media (min-width: 768px) {
  .heating-hero-title-line {
    display: block;
  }
}

@media (min-width: 1024px) {
  html:not([lang="en"]) .heating-hero-title--element {
    white-space: nowrap;
  }
}

.heating-capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.heating-capability-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100%;
  padding: 1.75rem 1.875rem;
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
}

.heating-capability-card-title {
  margin: 0 0 var(--space-md);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.35;
}

.heating-capability-card-text {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

.heating-block-intro,
.heating-compare-intro {
  max-width: 46rem;
}

.heating-capability-section {
  padding: clamp(2.5rem, 5vw, 5rem) clamp(1.75rem, 4vw, 3rem);
}

.heating-compare-section .heating-block-title {
  margin-bottom: var(--space-lg);
}

.heating-trust-patent-section .heating-patent-actions {
  margin-top: 1.5rem;
}

.heating-patent-description {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 42rem;
  overflow-wrap: normal;
  word-break: normal;
  line-break: strict;
}

.heating-patent-description > span {
  display: block;
}

.heating-safety-section .cert-grid--testing {
  margin-top: var(--space-lg);
}

.heating-feature-card-title {
  margin: 0 0 var(--space-md);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.35;
}

.heating-feature-card-text {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
}

.heating-test-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.45fr);
  gap: var(--space-xl) var(--space-2xl);
  align-items: start;
}

.heating-test-metric {
  grid-column: 1;
  grid-row: 1;
}

.heating-test-value {
  margin: 0;
  font-size: clamp(2.75rem, 6vw, 4rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.heating-test-label {
  margin: var(--space-sm) 0 0;
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.4;
}

.heating-test-meta {
  grid-column: 1;
  grid-row: 2;
  display: grid;
  gap: var(--space-md);
  margin: 0;
}

.heating-test-meta-item dt {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: 0.25rem;
}

.heating-test-meta-item dd {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.5;
}

.heating-test-report {
  grid-column: 2;
  grid-row: 1 / span 2;
  margin: 0;
  justify-self: center;
  align-self: center;
  padding: var(--space-md);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
  max-width: 100%;
}

.heating-test-report img {
  display: block;
  width: min(100%, 240px);
  height: auto;
  margin: 0 auto;
}

.heating-test-copy {
  grid-column: 1 / -1;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-light);
}

.heating-compare-matrix-wrap {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
}

.heating-compare-matrix {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  border: 1px solid var(--color-border-light);
  background: var(--color-white);
}

.heating-compare-matrix-col--type {
  width: 24%;
}

.heating-compare-matrix-col--material {
  width: 27%;
}

.heating-compare-matrix-col--safety {
  width: 22%;
}

.heating-compare-matrix-col--durability {
  width: 27%;
}

.heating-compare-matrix thead th {
  padding: 1.125rem 0.875rem;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.45;
  text-align: center;
  vertical-align: middle;
  color: var(--color-white);
  background: var(--color-primary-dark);
  border: 1px solid rgba(255, 255, 255, 0.1);
  word-break: normal;
  overflow-wrap: normal;
  line-break: strict;
}

.heating-compare-matrix tbody th,
.heating-compare-matrix tbody td {
  padding: 1.5rem 0.875rem;
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.8;
  text-align: center;
  vertical-align: middle;
  color: var(--color-text);
  border: 1px solid var(--color-border-light);
  word-break: normal;
  overflow-wrap: normal;
  line-break: strict;
  hyphens: none;
}

.comparison-product-name {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.comparison-product-type {
  white-space: nowrap;
}

.comparison-cell-lines {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  line-height: 1.8;
  text-align: center;
}

.nowrap {
  white-space: nowrap;
}

.heating-compare-matrix-type {
  font-size: 0.96875rem;
  font-weight: 700;
  line-height: 1.8;
  color: var(--color-primary-dark);
  background: rgba(26, 58, 92, 0.045);
}

.heating-compare-matrix-cell--short {
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.8;
  background: var(--color-white);
}

.heating-compare-matrix-cell--long {
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.8;
  background: var(--color-white);
}

.heating-compare-matrix-cell--long-text {
  font-size: 0.90625rem;
  font-weight: 400;
  line-height: 1.8;
  background: var(--color-white);
}

.heating-compare-matrix-row--expanded .heating-compare-matrix-type,
.heating-compare-matrix-row--expanded .heating-compare-matrix-cell--long,
.heating-compare-matrix-row--expanded .heating-compare-matrix-cell--long-text {
  vertical-align: middle;
}

.heating-compare-matrix-row--featured .heating-compare-matrix-type,
.heating-compare-matrix-row--featured .heating-compare-matrix-cell {
  background: rgba(26, 58, 92, 0.03);
}

.heating-compare-matrix-row--featured .heating-compare-matrix-type {
  border-left: 3px solid var(--color-primary-dark);
}

.heating-compare-matrix-cards {
  display: none;
  flex-direction: column;
  gap: var(--space-md);
}

.heating-compare-matrix-card {
  padding: var(--space-lg);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
}

.heating-compare-matrix-card--featured {
  background: rgba(26, 58, 92, 0.03);
  border-color: rgba(26, 58, 92, 0.18);
  border-left: 3px solid var(--color-primary-dark);
}

.heating-compare-matrix-card-title {
  margin: 0 0 var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border-light);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.45;
}

.heating-compare-matrix-card-list {
  margin: 0;
  display: grid;
  gap: var(--space-md);
}

.heating-compare-matrix-card-item {
  margin: 0;
}

.heating-compare-matrix-card-item dt {
  margin: 0 0 0.25rem;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-text-light);
  line-height: 1.4;
}

.heating-compare-matrix-card-item dd {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.8;
  word-break: normal;
  overflow-wrap: break-word;
  line-break: strict;
}

.heating-spec-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: var(--space-lg) 0 var(--space-xl);
  padding: 0;
  list-style: none;
}

.heating-spec-tag {
  padding: 0.5rem 0.875rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary-dark);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
}

.heating-trust-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: var(--space-lg);
  align-items: stretch;
}

.heating-trust-patent {
  padding: var(--space-2xl);
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, #1a3a5c 100%);
  border: 1px solid var(--color-primary-dark);
  color: var(--color-white);
}

.heating-trust-patent-title {
  margin: 0 0 var(--space-md);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-white);
}

.heating-trust-patent-text {
  margin: 0 0 var(--space-lg);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.75;
}

.heating-trust-certs {
  margin: 0;
}

.heating-tech-note {
  margin-bottom: var(--space-2xl);
  padding: var(--space-xl) var(--space-2xl);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
}

.heating-tech-note-title {
  margin: 0 0 var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.heating-tech-note-text {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.75;
  max-width: 48rem;
}

.product-detail-body--heating .heating-block--intro {
  padding: 0;
  border: none;
  background: transparent;
}

.product-detail-body--heating .heating-block--intro .heating-block-grid {
  padding: var(--space-2xl);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
}

.product-detail-body--heating .heating-hero-copy .heating-hero-desc + .heating-hero-desc {
  margin-top: 0;
}

@media (max-width: 1024px) {
  .heating-feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .heating-feature-grid--four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .heating-feature-grid--three {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .heating-feature-grid--three .heating-feature-card:nth-child(3) {
    grid-column: 1 / -1;
  }

  .heating-feature-card,
  .heating-feature-card:nth-child(4),
  .heating-feature-card:nth-child(5) {
    grid-column: auto;
  }

  .heating-block-grid--intro,
  .heating-block-grid--materials,
  .heating-trust-grid,
  .heating-test-panel {
    grid-template-columns: 1fr;
  }

  .heating-test-report {
    grid-column: 1;
    grid-row: auto;
    justify-self: start;
    width: 100%;
  }

  .heating-test-report img {
    width: min(100%, 200px);
  }

  .heating-test-copy {
    grid-column: 1;
  }

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

  .heating-capability-section {
    padding: clamp(3.5rem, 6vw, 4.5rem) clamp(1.5rem, 4vw, 2rem);
  }

  .heating-fir-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .heating-fir-thermal-frame .product-photo {
    max-height: 280px;
  }

  .heating-fir-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .heating-fir-visual-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .heating-fir-visual-card:last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    justify-self: center;
    width: 100%;
  }

  .heating-hero-grid--element {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .heating-hero-grid--module {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .heating-overview-item--module {
    height: 210px;
  }

  .heating-gallery-image--01 {
    max-width: 100%;
    max-height: 100%;
    transform: scale(1.3);
  }

  .heating-overview-item--strip {
    height: 172px;
  }

  .heating-gallery-image--02 {
    max-width: 96%;
    max-height: 92%;
  }

  .heating-overview-item--wired {
    height: 180px;
  }

  .heating-gallery-image--03 {
    max-width: 70%;
    max-height: 88%;
  }

  .heating-hero--element .heating-hero-copy {
    max-width: none;
  }

  .heating-compare-matrix thead th {
    padding: 1rem 1.125rem;
    font-size: 1rem;
  }

  .heating-compare-matrix tbody th,
  .heating-compare-matrix tbody td {
    padding: 1.375rem 0.875rem;
    font-size: 0.9375rem;
  }

  .heating-compare-matrix-cell--long-text {
    font-size: 0.90625rem;
  }
}

@media (max-width: 767px) {
  .heating-compare-matrix-wrap {
    display: none;
  }

  .heating-compare-matrix-cards {
    display: flex;
  }

  .heating-block {
    padding: var(--space-xl);
  }

  .heating-capability-grid {
    grid-template-columns: 1fr;
  }

  .heating-capability-section,
  .heating-fir-section,
  .heating-hero--module,
  .heating-hero--element {
    padding: clamp(1.25rem, 5vw, 1.75rem) var(--space-lg);
  }

  .heating-hero-grid--module,
  .heating-hero-grid--element {
    grid-template-columns: 1fr;
  }

  .heating-hero-title-line {
    display: inline;
  }

  .heating-hero--module .heating-hero-title {
    font-size: clamp(1.875rem, 8vw, 2.5rem);
    max-width: none;
  }

  .heating-overview-gallery {
    gap: 0.75rem;
  }

  .heating-overview-item {
    width: 100%;
  }

  .heating-overview-item--module {
    height: 200px;
  }

  .heating-gallery-image--01 {
    max-width: 100%;
    max-height: 100%;
    transform: scale(1.28);
  }

  .heating-overview-item--strip {
    height: 156px;
  }

  .heating-gallery-image--02 {
    max-width: 96%;
    max-height: 92%;
  }

  .heating-overview-item--wired {
    height: 188px;
  }

  .heating-gallery-image--03 {
    max-width: 78%;
    max-height: 90%;
  }

  .heating-hero-title--element {
    font-size: clamp(1.625rem, 7vw, 2rem);
    max-width: none;
  }

  .heating-fir-title {
    font-size: clamp(1.625rem, 5.5vw, 2rem);
  }

  .heating-fir-thermal-frame .product-photo {
    max-height: none;
  }

  .heating-fir-cards {
    grid-template-columns: 1fr;
    gap: 0.875rem;
  }

  .heating-fir-visual-grid {
    grid-template-columns: 1fr;
  }

  .heating-fir-visual-card:last-child {
    grid-column: auto;
    max-width: none;
    justify-self: stretch;
  }

  .heating-fir-card {
    padding: 1.375rem 1.375rem;
  }

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

  .heating-feature-grid {
    grid-template-columns: 1fr;
  }

  .heating-feature-grid--four {
    grid-template-columns: 1fr;
  }

  .heating-feature-grid--three {
    grid-template-columns: 1fr;
  }

  .heating-feature-grid--three .heating-feature-card:nth-child(3) {
    grid-column: auto;
  }
}

/* ---------- Quality Page ---------- */
html:has(body.page-quality),
html:has(body.page-about) {
  scroll-padding-top: calc(var(--header-height) + var(--space-xl));
}

.quality-section--alt {
  background: var(--color-bg-subtle);
}

.quality-section-header {
  max-width: 42rem;
  margin-bottom: var(--space-2xl);
}

.quality-section-header:not(:has(.quality-section-desc)) {
  margin-bottom: var(--space-lg);
}

.quality-section-title {
  font-size: var(--text-2xl);
  color: var(--color-primary-dark);
  margin-bottom: var(--space-md);
  line-height: 1.3;
  scroll-margin-top: calc(var(--header-height) + var(--space-xl));
}

.quality-section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.85;
}

/* ---------- Certification Summary Cards ---------- */
.cert-grid {
  display: grid;
  gap: var(--space-lg);
}

.cert-grid--management {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-lg);
}

.cert-grid--compliance,
.cert-grid--permits {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cert-marks-strip {
  margin: 0 0 var(--space-xl);
  padding: var(--space-lg) var(--space-xl);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 10px rgba(6, 18, 32, 0.04);
}

.cert-marks-strip-image {
  display: block;
  width: min(100%, 56rem);
  height: auto;
  margin: 0 auto;
}

.cert-card-mark--long {
  font-size: 0.5625rem;
}

.cert-card-mark--reach {
  font-size: 0.5rem;
  letter-spacing: 0;
  line-height: 1;
  max-width: 100%;
  padding: 0 0.12rem;
  white-space: nowrap;
}

.cert-grid--management .cert-card-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  font-size: 0.5rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
  text-align: center;
}

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

.cert-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  min-width: 0;
  padding: var(--space-lg);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 10px rgba(6, 18, 32, 0.04);
}

.cert-card-icon {
  flex-shrink: 0;
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
}

.cert-card-icon img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.cert-card-icon--mark {
  background: var(--color-white);
}

.cert-card-mark {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-primary-dark);
  line-height: 1.2;
  text-align: center;
}

.cert-card-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-xs);
  flex: 1;
  min-width: 0;
}

.cert-card-status {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #0f766e;
  background: #ecfdf5;
  border-radius: 999px;
  line-height: 1.4;
}

.cert-card-status--compliant {
  color: #1d4ed8;
  background: #eff6ff;
}

.cert-card-title {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.4;
}

.cert-card-desc {
  margin: 0;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.55;
}

.cert-card-meta {
  margin: 0;
  font-size: var(--text-xs);
  color: var(--color-text-light);
  line-height: 1.5;
}

.cert-card-scope,
.cert-card-note {
  margin: 0;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.55;
}

.cert-card-note {
  color: var(--color-text-light);
}

.cert-card-link {
  margin-top: var(--space-xs);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 0.18em;
  white-space: nowrap;
}

.cert-card-link:hover {
  color: var(--color-primary-light);
}

.cert-grid--management .cert-card {
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-md);
  height: 100%;
  word-break: normal;
  overflow-wrap: normal;
}

.cert-grid--management .cert-card-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 4.5rem;
}

.cert-grid--management .cert-card-icon {
  box-sizing: border-box;
  width: 4.5rem;
  height: 4.5rem;
  padding: 0;
  border: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cert-grid--management .cert-card-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  flex: 1;
  width: 100%;
  min-width: 0;
  word-break: normal;
  overflow-wrap: normal;
}

.cert-grid--management .cert-card-title,
.cert-grid--management .cert-card-desc,
.cert-grid--management .cert-card-scope,
.cert-grid--management .cert-card-meta,
.cert-grid--management .cert-card-note {
  word-break: normal;
  overflow-wrap: normal;
}

.cert-grid--management .cert-card-link {
  margin-top: auto;
}

.cert-card--featured {
  flex-direction: column;
  gap: var(--space-lg);
}

.cert-card--ir .cert-card-ir-layout {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: start;
  width: 100%;
}

.cert-card--ir .cert-card-icon {
  width: 5.5rem;
  height: 7rem;
}

.cert-card-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-sm) var(--space-md);
  margin: 0 0 var(--space-md);
  padding: 0;
}

.cert-card-metric {
  margin: 0;
}

.cert-card-metric dt {
  margin: 0 0 var(--space-xs);
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  line-height: 1.35;
}

.cert-card-metric dd {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.35;
  word-break: break-word;
}

.cert-card-metric--highlight dd {
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.2;
}

.cert-footer-note {
  margin: 0 0 var(--space-3xl);
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.6;
  text-align: center;
}

.heating-safety-section .cert-grid--testing {
  margin-bottom: var(--space-md);
}

.quality-doc-grid {
  display: grid;
  gap: var(--space-xl);
}

.quality-doc-grid--systems {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.quality-doc-grid--permits {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.quality-doc-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 10px rgba(6, 18, 32, 0.04);
  overflow: hidden;
}

.quality-doc-card-preview {
  display: block;
  padding: var(--space-md);
  background: #f8fafc;
  border-bottom: 1px solid var(--color-border-light);
  aspect-ratio: 0.707 / 1;
}

.quality-doc-card-preview:hover .quality-doc-card-image {
  opacity: 0.92;
}

.quality-doc-card-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transition: opacity var(--transition-fast);
}

.quality-doc-card-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-lg);
  flex: 1;
}

.quality-doc-card-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.4;
  margin: 0;
}

.quality-doc-card-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin: 0;
}

.quality-doc-card-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: auto;
  padding: 0.625rem 1.125rem;
  min-height: 44px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast);
}

.quality-doc-card-action:hover {
  color: var(--color-primary-dark);
  background: var(--color-white);
  border-color: rgba(18, 61, 114, 0.22);
}

.quality-iso-grid,
.quality-permit-grid,
.quality-testing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-lg);
}

.quality-iso-card,
.quality-permit-card,
.quality-testing-card {
  padding: var(--space-xl);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
}

.quality-section--alt .quality-permit-card,
.quality-section--alt .quality-patent-region {
  background: var(--color-white);
}

.quality-iso-name,
.quality-permit-name,
.quality-testing-name {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-sm);
  line-height: 1.35;
}

.quality-iso-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  line-height: 1.5;
}

.quality-cert-slot {
  margin-top: auto;
}

.quality-cert-thumb,
.quality-doc-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  padding: var(--space-md);
  background: var(--color-bg-muted);
  border: 1px dashed var(--color-border);
  text-align: center;
}

.quality-cert-thumb-label,
.quality-doc-thumb.is-empty span {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.quality-pending {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.75;
  margin: 0;
}

.quality-testing-sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  line-height: 1.5;
}

.quality-testing-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin: 0;
}

.quality-testing-data {
  margin: 0 0 var(--space-lg);
  padding: 0;
}

.quality-testing-data-row {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.quality-testing-data-row:first-child {
  padding-top: 0;
}

.quality-testing-data-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.quality-testing-data dt {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.quality-testing-data dd {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary-dark);
  line-height: 1.45;
  word-break: break-word;
}

.quality-testing-highlight {
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.25;
}

.quality-testing-action {
  margin: var(--space-lg) 0 0;
}

.quality-testing-note {
  margin-top: var(--space-xl);
  font-size: var(--text-xs);
  color: var(--color-text-light);
  line-height: 1.6;
}

.quality-patent-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-lg);
}

.quality-patent-region {
  min-width: 0;
  padding: var(--space-xl);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  box-shadow: 0 1px 2px rgba(10, 31, 61, 0.04);
}

.quality-patent-region-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  letter-spacing: 0.06em;
  margin: 0 0 var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border-light);
  line-height: 1.4;
}

.quality-patent-numbers {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.quality-patent-number {
  display: inline-block;
  max-width: 100%;
  margin: 0;
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg-subtle);
  color: var(--color-primary-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: 0.01em;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.quality-doc-gallery {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-lg);
}

.quality-doc-item {
  margin: 0;
  min-width: 0;
}

.quality-doc-trigger {
  display: block;
  width: 100%;
  padding: 0;
  border: none;
  background: none;
  cursor: default;
  text-align: left;
}

.quality-doc-trigger:not(:disabled),
.quality-doc-trigger.is-ready {
  cursor: pointer;
}

.quality-doc-trigger:not(:disabled):hover .quality-doc-thumb,
.quality-doc-trigger.is-ready:hover .quality-doc-thumb {
  border-color: var(--color-primary-light);
}

.quality-doc-thumb {
  height: 200px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.quality-doc-image {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
}

.quality-doc-image.is-error,
.quality-doc-image[hidden] {
  display: none;
}

.quality-doc-caption {
  margin-top: var(--space-md);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.5;
  word-break: break-word;
}

.quality-cta {
  padding-block: clamp(4.5rem, 5.5vw, 5.5rem);
  text-align: center;
  background: var(--color-primary-dark);
  color: var(--color-white);
}

.quality-cta-title {
  font-size: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  color: var(--color-white);
  margin: 0 auto 1.125rem;
  line-height: 1.35;
  max-width: 42rem;
}

.quality-cta-desc {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, 0.88);
  margin: 0 auto 2rem;
  line-height: 1.7;
  max-width: 53.125rem;
}

.quality-cta .btn-primary {
  background: var(--color-white);
  color: var(--color-primary-dark);
  border-color: var(--color-white);
}

.quality-cta .btn-primary:hover {
  background: var(--color-bg-subtle);
  border-color: var(--color-bg-subtle);
  color: var(--color-primary-dark);
}

html[lang="en"] .quality-cta-title {
  max-width: 56.25rem;
  font-size: clamp(1.2rem, 1.05rem + 0.55vw, 1.4375rem);
  line-height: 1.25;
}

html[lang="en"] .quality-cta-desc {
  max-width: min(100%, 58rem);
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
}

@media (min-width: 1024px) {
  html[lang="en"] .quality-cta-desc {
    white-space: nowrap;
  }
}

@media (max-width: 1023px) {
  html[lang="en"] .quality-cta-desc {
    white-space: normal;
  }
}

/* ---------- About Page — Quality Integration ---------- */
.about-quality-section {
  background: var(--color-bg-subtle);
}

.about-quality-main-title,
#quality,
#patents {
  scroll-margin-top: calc(var(--header-height) + var(--space-xl));
}

.about-quality-main-title {
  font-size: var(--text-2xl);
  color: var(--color-primary-dark);
  line-height: 1.3;
}

.about-quality-intro {
  margin-bottom: var(--space-xl);
}

.about-quality-intro .quality-section-desc {
  margin: var(--space-md) 0 0;
  max-width: 42rem;
}

.about-quality-block {
  margin-bottom: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid var(--color-border-light);
}

.about-quality-block--certs {
  margin-top: 0;
}

.about-quality-block:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.quality-subsection-title {
  font-size: var(--text-xl);
  color: var(--color-primary-dark);
  margin-bottom: var(--space-md);
  line-height: 1.35;
}

.quality-home-link {
  margin-top: var(--space-md);
}

.quality-home-link a {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.04em;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.quality-home-link a:hover {
  color: var(--color-primary-light);
}

/* ---------- Nav Active State ---------- */
.nav-link.is-active {
  color: var(--color-primary);
  font-weight: 600;
}

/* ---------- Responsive: Tablet ---------- */
@media (max-width: 1024px) {
  .products-page-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: var(--space-xl);
  }

  .contact-page-grid {
    gap: var(--space-2xl);
  }

  .cert-grid--management,
  .cert-grid--compliance,
  .cert-grid--permits,
  .cert-grid--testing {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .cert-card--ir .cert-card-ir-layout {
    grid-template-columns: 4.5rem minmax(0, 1fr);
  }

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

  .quality-doc-gallery {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- Responsive: Mobile ---------- */
@media (max-width: 768px) {
  .products-page-layout {
    grid-template-columns: 1fr;
    min-width: 0;
  }

  .products-sidebar,
  .products-main {
    min-width: 0;
  }

  .products-sidebar {
    position: static;
    top: auto;
    max-height: none;
    overflow: visible;
  }

  .category-selector {
    flex-wrap: wrap;
  }

  .category-btn {
    min-width: 0;
    flex: 1 1 calc(50% - var(--space-sm));
  }

  .type-selector {
    grid-template-columns: 1fr 1fr;
  }

  /* Heating Modules sidebar only — do not affect elastomer type grid */
  #heating-sidebar .products-category-visual.product-showcase {
    aspect-ratio: auto;
    height: auto;
    min-height: 0;
    max-height: none;
    padding: 1.375rem 1.5rem;
    margin-top: 0;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  #heating-sidebar .products-category-visual .product-photo {
    width: 100%;
    height: auto;
    max-width: 100%;
    max-height: 430px;
    object-fit: contain;
    object-position: center;
    /* PNG has large top/bottom canvas padding; crop view only, keep product intact */
    object-view-box: inset(32% 5% 12% 5%);
  }

  #heating-sidebar .type-selector-label {
    font-size: 0.9375rem;
    letter-spacing: 0.094em;
    margin-bottom: 1rem;
  }

  #heating-sidebar .type-selector.type-selector--heating {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
    grid-template-columns: none;
  }

  #heating-sidebar .type-selector--heating .type-btn {
    width: 100%;
    min-height: 56px;
    padding: 0.875rem 1.125rem;
    font-size: 0.9375rem;
    line-height: 1.35;
    white-space: normal;
    text-align: center;
    overflow-wrap: break-word;
    word-break: normal;
  }

  #heating-sidebar {
    margin-bottom: 2.75rem;
  }

  .products-sidebar:has(#heating-sidebar:not([hidden])) .category-selector {
    margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
  }

  .product-detail-header,
  .product-detail-body,
  .product-overview-card,
  .product-detail-more {
    padding: var(--space-xl);
  }

  .product-overview-title {
    margin-bottom: var(--space-lg);
    font-size: var(--text-xl);
  }

  .product-overview-layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .product-overview-media {
    max-width: 280px;
    margin-inline: auto;
  }

  .spec-table-wrap {
    display: none;
  }

  .spec-cards {
    display: block;
  }

  .spec-card {
    padding: var(--space-md) var(--space-lg);
  }

  .spec-card-param {
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-xs);
  }

  .spec-card-row {
    padding: 0;
  }

  .spec-card-row + .spec-card-row {
    margin-top: 0.125rem;
  }

  .product-detail-image:not(.product-detail-image--type) {
    aspect-ratio: unset;
    height: clamp(120px, 30vw, 168px);
    max-height: 168px;
    min-height: 120px;
    margin-bottom: var(--space-xl);
  }

  .product-detail-image--type:not(.product-detail-image--dual) {
    height: clamp(220px, 58vw, 300px);
    min-height: 220px;
    max-height: 300px;
    margin-bottom: 0;
  }

  .product-detail-image--type.product-detail-image--dual {
    grid-template-columns: 1fr 1fr;
    height: auto;
    max-height: none;
    min-height: 0;
    gap: var(--space-sm);
    max-width: 100%;
  }

  .product-detail-image--type .product-detail-image-item {
    aspect-ratio: unset;
    max-height: 240px;
    min-height: 180px;
  }

  .product-detail-image--type .product-detail-image-item .product-photo {
    min-height: 140px;
    max-height: 200px;
    padding: 0.375rem;
  }

  .product-detail-image--type .product-detail-image-item .product-type-zoom {
    min-height: 140px;
    max-height: 200px;
  }

  .product-structure-grid--dual {
    grid-template-columns: 1fr;
  }

  .product-structure-photo {
    min-height: clamp(220px, 58vw, 320px);
    padding: var(--space-sm);
  }

  .product-structure-grid--tt2 .product-structure-media {
    min-height: clamp(260px, 68vw, 380px);
    padding: 0.35rem;
  }

  .product-structure-grid--tt2 .product-structure-photo {
    min-height: 0;
    max-height: none;
    padding: 0;
  }

  .product-structure-grid--ir .ir-diagram-media {
    min-height: clamp(260px, 66vw, 360px);
    padding: 1rem 1rem 2.75rem;
  }

  .product-structure-grid--ir .ir-diagram-image {
    max-width: 94%;
    max-height: none;
  }

  .product-structure-grid--ir .ir-diagram-caption {
    padding: 1.125rem 1.25rem;
  }

  .product-structure-grid:not(.product-structure-grid--dual) .product-structure-photo {
    min-height: clamp(240px, 62vw, 360px);
  }

  html[lang="zh-Hant"] .product-structure-grid:not(.product-structure-grid--dual) .product-structure-photo {
    min-height: clamp(280px, 78vw, 440px);
    max-height: none;
  }

  html[lang="zh-Hant"] .product-structure-grid--tt2 .product-structure-photo {
    max-height: none;
  }

  html[lang="zh-Hant"] .product-structure-grid--ir .ir-diagram-image {
    max-height: none;
  }

  .product-detail-image .visual-placeholder {
    min-height: unset;
    height: 100%;
  }

  .contact-page-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .form-row .form-group {
    margin-bottom: 1.125rem;
  }

  .form-row .form-group:last-child {
    margin-bottom: 0;
  }

  .form-row + .form-group,
  .form-row + .form-row {
    margin-top: 1.125rem;
  }

  .contact-form {
    padding: 1.5rem 1.25rem;
  }

  .form-submit {
    width: 100%;
  }

  .heating-hero {
    padding: var(--space-xl);
  }

  /* Heating mobile: prevent CJK text clipping (desktop unchanged) */
  .product-detail-body--heating .product-detail-section-title,
  .product-detail-body--heating .heating-core-title,
  .product-detail-body--heating .heating-hero-title,
  .product-detail-body--heating .heating-cta-title {
    line-height: 1.35;
    height: auto;
    min-height: 0;
    overflow: visible;
  }

  .product-detail-body--heating .heating-core-title {
    word-break: break-word;
    overflow-wrap: break-word;
  }

  .product-detail-body--heating .heating-hero-subtitle,
  .product-detail-body--heating .heating-section-subtitle {
    line-height: 1.45;
  }

  .product-detail-body--heating .heating-core-feature-title,
  .product-detail-body--heating .heating-safety-item-title,
  .product-detail-body--heating .heating-ir-subtitle {
    line-height: 1.4;
    height: auto;
    min-height: 0;
    overflow: visible;
  }

  .product-detail-body--heating .heating-ir-stat-value {
    line-height: 1.2;
    overflow: visible;
    word-break: normal;
  }

  .product-detail-body--heating .heating-ir-stat-label,
  .product-detail-body--heating .heating-ir-stat-num,
  .product-detail-body--heating .heating-ir-stat-org,
  .product-detail-body--heating .heating-ir-report-no {
    line-height: 1.45;
    overflow: visible;
    white-space: normal;
    word-break: break-word;
  }

  .product-detail-body--heating .heating-ir-stat-org {
    white-space: normal;
  }

  .product-detail-body--heating .visual-placeholder {
    height: auto;
    min-height: 0;
    overflow: visible;
    padding: var(--space-xl) var(--space-md);
  }

  .heating-hero-showcase {
    height: auto;
    min-height: clamp(320px, 72vw, 480px);
    max-height: 480px;
  }

  .heating-hero-showcase--module {
    min-height: 0;
    max-height: none;
    aspect-ratio: 1 / 1;
  }

  .heating-app-showcase {
    height: auto;
    min-height: clamp(220px, 55vw, 280px);
    max-height: 280px;
  }

  .product-detail-body--heating .heating-core-visual--primary .visual-placeholder--tall,
  .product-detail-body--heating .heating-patent-certificate-slot .visual-placeholder--patent-cert {
    aspect-ratio: unset;
    max-height: none;
    min-height: 0;
  }

  .product-detail-body--heating .btn {
    white-space: normal;
    height: auto;
    min-height: 48px;
    line-height: 1.35;
    padding-block: 0.875rem;
  }

  .product-detail-body--heating .heating-patent-headline,
  .product-detail-body--heating .heating-patent-region-name {
    line-height: 1.35;
    height: auto;
    overflow: visible;
  }

  .product-detail-body--heating .heating-patent-number {
    line-height: 1.45;
    font-size: var(--text-sm);
    overflow: visible;
    text-overflow: unset;
    white-space: normal;
  }

  .heating-hero-grid,
  .heating-core-features,
  .heating-ir-showcase,
  .heating-ir-stats-row,
  .heating-safety-grid,
  .heating-cert-grid,
  .heating-report-gallery,
  .heating-apps-grid,
  .heating-patent-grid {
    grid-template-columns: 1fr;
  }

  .heating-ir-showcase {
    padding: var(--space-xl);
  }

  .heating-report-thumb--featured,
  .heating-report-thumb--featured.is-empty {
    min-height: 220px;
  }

  .heating-report-gallery .heating-report-thumb,
  .heating-report-gallery .heating-report-thumb.is-empty {
    height: 220px;
  }

  .heating-core-visual--primary .visual-placeholder--tall {
    min-height: 0;
    max-height: none;
  }

  .heating-core-gallery {
    grid-template-columns: 1fr;
  }

  .heating-core-gallery .product-showcase--tall {
    min-height: 280px;
    max-height: none;
    aspect-ratio: 3 / 4;
  }

  .heating-core-cta-group {
    flex-direction: column;
  }

  .heating-core-cta-group .btn {
    width: 100%;
    text-align: center;
  }

  .heating-hero-actions {
    flex-direction: column;
  }

  .heating-hero-actions .btn {
    width: 100%;
    text-align: center;
  }

  .heating-patent-inner {
    padding: var(--space-xl);
  }

  .heating-process {
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-lg);
  }

  .heating-process-step[aria-hidden="true"] {
    display: none;
  }

  .heating-process-label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    text-align: center;
    white-space: normal;
    line-height: 1.35;
    height: auto;
    min-height: 48px;
  }

  .product-detail-body--heating .product-detail-section {
    padding: var(--space-xl);
  }

  .heating-cta {
    padding: var(--space-xl);
  }

  .cert-grid--compliance,
  .cert-grid--permits,
  .cert-grid--testing,
  .quality-iso-grid,
  .quality-permit-grid,
  .quality-testing-grid,
  .quality-patent-grid,
  .quality-doc-gallery,
  .quality-doc-grid--systems,
  .quality-doc-grid--permits {
    grid-template-columns: 1fr;
  }

  .cert-card--ir .cert-card-ir-layout {
    grid-template-columns: 1fr;
  }

  .cert-card-metrics {
    grid-template-columns: 1fr 1fr;
  }

  .quality-doc-thumb {
    height: 220px;
  }

  .quality-cert-thumb {
    min-height: 180px;
  }

  .quality-testing-action .btn {
    width: 100%;
    text-align: center;
  }

  .quality-cta {
    padding-block: clamp(3.5rem, 8vw, 4.5rem);
  }

  .quality-cta .btn-primary {
    width: auto;
    max-width: 100%;
  }

  .quality-section-title,
  .quality-testing-highlight,
  .quality-patent-number {
    line-height: 1.35;
    overflow: visible;
  }
}

@media (max-width: 430px) {
  .cert-grid--management {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 400px) {
  .type-selector {
    grid-template-columns: 1fr;
  }
}

/* ---------- English About — section vertical rhythm only ---------- */
html[lang="en"] body.page-about .section {
  padding-block: clamp(2.5rem, 5vw, 3.5rem);
}

html[lang="en"] body.page-about .section:has(+ .about-overview-section) {
  padding-bottom: var(--space-xl);
}

html[lang="en"] body.page-about .about-page-content p:last-of-type {
  margin-bottom: var(--space-xl);
}

html[lang="en"] body.page-about .about-page-links {
  margin-bottom: var(--space-lg);
}

html[lang="en"] body.page-about .about-overview-section {
  padding-block: clamp(2rem, 4vw, 2.75rem);
}

html[lang="en"] body.page-about .about-overview-header {
  margin-bottom: clamp(1.25rem, 2.5vw, 2rem);
}

html[lang="en"] body.page-about .about-overview-label {
  word-break: normal;
  overflow-wrap: normal;
  hyphens: none;
}

html[lang="en"] body.page-about .about-overview-text {
  word-break: normal;
  overflow-wrap: normal;
}

html[lang="en"] body.page-about .about-overview-section + .about-quality-section {
  padding-top: clamp(2rem, 4vw, 2.75rem);
}

html[lang="en"] body.page-about .about-quality-intro {
  margin-bottom: var(--space-xl);
}

html[lang="en"] body.page-about .about-quality-block {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
}

html[lang="en"] body.page-about .quality-section-header {
  margin-bottom: var(--space-lg);
}

@media (max-width: 768px) {
  html[lang="en"] body.page-about .section {
    padding-block: clamp(2.25rem, 6vw, 3rem);
  }

  html[lang="en"] body.page-about .about-quality-block {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
  }
}

/* ---------- English Products: spec table typography & column widths ---------- */
html[lang="en"] .products-main,
html[lang="en"] .product-detail,
html[lang="en"] .product-detail-body {
  min-width: 0;
}

html[lang="en"] .spec-table th,
html[lang="en"] .spec-table td {
  word-break: normal;
  overflow-wrap: anywhere;
}

html[lang="en"] .spec-table--tg tbody td:nth-child(n + 4):not([colspan]),
html[lang="en"] .spec-table--tg thead th:nth-child(n + 4),
html[lang="en"] .spec-table--ir-dim tbody td:nth-child(n + 4):not([colspan]),
html[lang="en"] .spec-table--ir-dim thead th:nth-child(n + 4),
html[lang="en"] .spec-table--tg tbody td:nth-child(2),
html[lang="en"] .spec-table--tg tbody td:nth-child(3),
html[lang="en"] .spec-table--ir-dim tbody td:nth-child(2),
html[lang="en"] .spec-table--ir-dim tbody td:nth-child(3) {
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
}

html[lang="en"] .spec-table--tg thead th:nth-child(1),
html[lang="en"] .spec-table--tg tbody th[scope="row"] {
  width: 23%;
  min-width: 9rem;
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
}

html[lang="en"] .spec-table--tg thead th:nth-child(2),
html[lang="en"] .spec-table--tg tbody td:nth-child(2) {
  width: 10%;
  min-width: 4.5rem;
  white-space: nowrap;
}

html[lang="en"] .spec-table--tg thead th:nth-child(3),
html[lang="en"] .spec-table--tg tbody td:nth-child(3) {
  width: 11%;
  min-width: 3.5rem;
  white-space: nowrap;
}

html[lang="en"] .spec-table--ir-dim thead th:nth-child(1),
html[lang="en"] .spec-table--ir-dim tbody th[scope="row"] {
  width: 23%;
  min-width: 9rem;
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
}

html[lang="en"] .spec-table--ir-dim thead th:nth-child(2),
html[lang="en"] .spec-table--ir-dim tbody td:nth-child(2) {
  width: 10%;
  min-width: 4.5rem;
  white-space: nowrap;
}

html[lang="en"] .spec-table--ir-dim thead th:nth-child(3),
html[lang="en"] .spec-table--ir-dim tbody td:nth-child(3) {
  width: 11%;
  min-width: 3.5rem;
  white-space: nowrap;
}

html[lang="en"] .spec-table--props tbody th[scope="row"] {
  white-space: normal;
}

html[lang="en"] .spec-table--props-4col tbody th[scope="row"] {
  width: 28%;
  min-width: 9rem;
  white-space: normal;
}

html[lang="en"] .spec-table--props-5col thead th:first-child {
  width: 26%;
}

html[lang="en"] .spec-table--props-5col thead th:nth-child(n + 2) {
  width: 18.5%;
}

html[lang="en"] .spec-table--props-5col tbody th[scope="row"] {
  width: 26%;
  min-width: 10rem;
  white-space: normal;
  word-break: normal;
  overflow-wrap: normal;
}

html[lang="en"] .spec-table--props-5col tbody td {
  width: 18.5%;
}

html[lang="en"] .spec-table--props-5col .spec-param-main {
  white-space: normal;
}

html[lang="en"] .spec-card-param,
html[lang="en"] .spec-card-value,
html[lang="en"] .spec-card-shared {
  word-break: normal;
  overflow-wrap: normal;
}

/* ---------- English Heating Products polish ---------- */
html[lang="en"] .heating-patent .product-detail-text {
  margin-bottom: var(--space-lg);
}

.heating-patent-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.4rem;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-primary);
  text-decoration: none;
  border: 1.5px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: transparent;
  white-space: nowrap;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.heating-patent-link:hover {
  color: var(--color-white);
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 6px 16px rgba(26, 58, 92, 0.18);
}

.heating-patent-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

html[lang="en"] .heating-core-features {
  width: 100%;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
  align-items: stretch;
}

html[lang="en"] .heating-core-feature {
  min-width: 0;
  padding: var(--space-lg);
  align-self: stretch;
}

html[lang="en"] .heating-core-feature:last-child {
  grid-column: 1 / -1;
  align-self: start;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-rows: auto auto;
  column-gap: var(--space-xl);
  row-gap: var(--space-md);
  align-items: center;
}

html[lang="en"] .heating-core-feature:last-child .heating-core-feature-title {
  grid-column: 1;
  grid-row: 1;
  margin-bottom: 0;
}

html[lang="en"] .heating-core-feature:last-child .heating-core-feature-text {
  grid-column: 1;
  grid-row: 2;
}

html[lang="en"] .heating-core-feature:last-child .heating-core-cta-group {
  grid-column: 2;
  grid-row: 1 / -1;
  margin-top: 0;
  flex-shrink: 0;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: var(--space-md);
}

html[lang="en"] .heating-core-feature-text {
  font-size: var(--text-base);
  line-height: 1.65;
}

.heating-ir-showcase--metrics {
  grid-template-columns: 1fr;
  max-width: 44rem;
  margin-inline: auto;
  text-align: center;
}

.heating-ir-showcase--metrics .heating-ir-stat-hero {
  align-items: center;
}

.heating-ir-showcase--metrics .heating-ir-stats-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  justify-items: center;
  text-align: center;
  gap: var(--space-lg) var(--space-xl);
}

.heating-ir-showcase--metrics .heating-ir-stat-item {
  align-items: center;
}

.heating-ir-showcase--metrics .heating-ir-stat-org {
  white-space: normal;
}

.heating-ir-showcase--metrics .heating-ir-report-no {
  margin-top: var(--space-md);
}

html[lang="en"] .heating-process--flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  align-items: stretch;
  gap: var(--space-lg);
  padding: var(--space-xl) var(--space-lg);
  list-style: none;
}

html[lang="en"] .heating-process--flow .heating-process-step {
  position: relative;
  min-width: 0;
}

html[lang="en"] .heating-process--flow .heating-process-step:not(:last-child)::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: calc(var(--space-lg) * -0.5);
  transform: translate(50%, -50%);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  pointer-events: none;
}

html[lang="en"] .heating-process--flow .heating-process-label {
  width: 100%;
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  white-space: normal;
  line-height: 1.4;
  padding: var(--space-md);
}

html[lang="en"] .heating-quality-entry {
  margin: var(--space-xl) 0 0;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border-light);
  text-align: center;
}

html[lang="en"] .heating-quality-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  text-decoration: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.625rem 1.25rem;
  background: var(--color-white);
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background var(--transition-fast);
}

html[lang="en"] .heating-quality-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary-light);
  background: var(--color-bg-subtle);
}

html[lang="en"] .heating-cta {
  margin-top: var(--space-xl);
}

@media (max-width: 1024px) and (min-width: 769px) {
  html[lang="en"] .heating-core-feature:last-child .heating-core-cta-group {
    flex-direction: column;
    align-items: flex-end;
  }
}

@media (max-width: 1180px) and (min-width: 769px) {
  html[lang="en"] .heating-process--flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-rows: auto auto;
    row-gap: var(--space-xl);
    column-gap: var(--space-lg);
  }

  html[lang="en"] .heating-process--flow .heating-process-step:nth-child(1) {
    grid-column: 1;
    grid-row: 1;
  }

  html[lang="en"] .heating-process--flow .heating-process-step:nth-child(2) {
    grid-column: 2;
    grid-row: 1;
  }

  html[lang="en"] .heating-process--flow .heating-process-step:nth-child(3) {
    grid-column: 3;
    grid-row: 1;
  }

  html[lang="en"] .heating-process--flow .heating-process-step:nth-child(3)::after {
    content: "↓";
    top: auto;
    bottom: calc(var(--space-xl) * -0.5);
    right: 50%;
    transform: translate(50%, 50%);
  }

  html[lang="en"] .heating-process--flow .heating-process-step:nth-child(4) {
    grid-column: 2;
    grid-row: 2;
  }

  html[lang="en"] .heating-process--flow .heating-process-step:nth-child(5) {
    grid-column: 3;
    grid-row: 2;
  }
}

@media (max-width: 768px) {
  html[lang="en"] .heating-core-features {
    grid-template-columns: 1fr;
  }

  html[lang="en"] .heating-core-feature:last-child {
    grid-column: auto;
    display: block;
  }

  html[lang="en"] .heating-core-feature:last-child .heating-core-feature-title {
    margin-bottom: var(--space-md);
  }

  html[lang="en"] .heating-core-feature:last-child .heating-core-cta-group {
    margin-top: var(--space-lg);
    flex-direction: column;
    align-items: stretch;
  }

  .heating-ir-showcase--metrics .heating-ir-stats-row {
    grid-template-columns: 1fr;
  }

  html[lang="en"] .heating-process--flow {
    grid-template-columns: 1fr;
    gap: 0;
    padding: var(--space-lg);
  }

  html[lang="en"] .heating-process--flow .heating-process-step {
    display: flex;
    flex-direction: column;
  }

  html[lang="en"] .heating-process--flow .heating-process-step::after {
    content: "↓";
    position: static;
    transform: none;
    display: flex;
    justify-content: center;
    padding: var(--space-xs) 0 var(--space-sm);
    right: auto;
    top: auto;
    bottom: auto;
  }

  html[lang="en"] .heating-process--flow .heating-process-step:last-child::after {
    display: none;
  }

  html[lang="en"] .heating-process--flow .heating-process-label {
    min-height: 0;
  }
}

/* ---------- EN heating modules: English text-length layout ---------- */
@media (min-width: 1025px) {
  html[lang="en"] .heating-hero-grid--element {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    gap: clamp(1.25rem, 2.2vw, 1.75rem);
  }
}

html[lang="en"] .heating-hero--element .heating-hero-content {
  min-width: 0;
  max-width: 100%;
}

html[lang="en"] .heating-hero-title--element {
  white-space: normal;
  overflow-wrap: normal;
  word-break: normal;
  hyphens: none;
  max-width: 100%;
  font-size: clamp(1.5rem, 2vw, 2.375rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

html[lang="en"] .heating-hero-title--element .heating-hero-title-line {
  display: block;
}

html[lang="en"] .heating-hero--element .heating-hero-subtitle {
  font-size: 0.9375rem;
  line-height: 1.45;
  max-width: 36rem;
}

html[lang="en"] .heating-hero--element .heating-hero-desc {
  font-size: 0.875rem;
  line-height: 1.7;
  max-width: 38rem;
}

html[lang="en"] .heating-hero--element .heating-product-gallery {
  gap: 1rem;
}

html[lang="en"] .heating-hero--module .heating-hero-title {
  font-size: clamp(2rem, 3.2vw, 3rem);
  line-height: 1.12;
}

html[lang="en"] .heating-hero--module .heating-hero-desc {
  font-size: 0.875rem;
  line-height: 1.7;
  max-width: 34rem;
}

html[lang="en"] .heating-hero--module .heating-hero-actions {
  flex-wrap: wrap;
  gap: 0.75rem;
}

html[lang="en"] .heating-hero--module .heating-hero-actions .btn {
  white-space: normal;
  text-align: center;
  line-height: 1.35;
}

html[lang="en"] .type-selector--heating .type-btn {
  word-break: normal;
  overflow-wrap: break-word;
  hyphens: none;
  font-size: 0.8125rem;
  line-height: 1.35;
  padding: 0.75rem 0.625rem;
  min-height: 3.25rem;
  align-items: center;
}

html[lang="en"] .heating-app-name {
  font-size: 0.9375rem;
  line-height: 1.35;
}

html[lang="en"] .heating-block-title,
html[lang="en"] .heating-fir-title {
  overflow-wrap: normal;
  word-break: normal;
  hyphens: none;
}

html[lang="en"] .heating-fir-title {
  font-size: clamp(1.75rem, 2.6vw, 2.5rem);
  line-height: 1.05;
  max-width: none;
}

html[lang="en"] .heating-fir-copy .heating-block-text {
  max-width: 36rem;
  font-size: 0.875rem;
}

html[lang="en"] .heating-fir-cards {
  gap: 1.125rem;
  align-items: stretch;
}

html[lang="en"] .heating-fir-card {
  padding: 1.5rem 1.5rem;
  height: auto;
}

html[lang="en"] .heating-fir-card-title {
  font-size: 1rem;
  line-height: 1.35;
  min-height: 0;
}

html[lang="en"] .heating-fir-card-text {
  font-size: 0.9375rem;
  line-height: 1.75;
  overflow-wrap: normal;
  word-break: normal;
}

html[lang="en"] .heating-feature-grid--three .heating-feature-card-title {
  font-size: 1rem;
}

html[lang="en"] .heating-feature-grid--three .heating-feature-card-text {
  font-size: 0.8125rem;
  line-height: 1.6;
  overflow-wrap: normal;
  word-break: normal;
}

html[lang="en"] .heating-capability-card-title {
  font-size: 0.9375rem;
}

html[lang="en"] .heating-capability-card-text {
  font-size: 0.8125rem;
  line-height: 1.6;
  overflow-wrap: normal;
  word-break: normal;
}

html[lang="en"] .heating-process-label {
  font-size: 0.8125rem;
  line-height: 1.35;
  text-align: center;
}

html[lang="en"] .heating-test-label {
  max-width: 16rem;
  font-size: 0.8125rem;
  line-height: 1.4;
}

html[lang="en"] .heating-test-meta-item dt {
  font-size: 0.6875rem;
}

html[lang="en"] .heating-test-meta-item dd {
  font-size: 0.8125rem;
  line-height: 1.45;
  overflow-wrap: normal;
  word-break: normal;
}

html[lang="en"] .heating-compare-section .heating-block-title {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  line-height: 1.3;
  max-width: 42rem;
}

html[lang="en"] .heating-compare-matrix-col--type {
  width: 23%;
}

html[lang="en"] .heating-compare-matrix-col--material {
  width: 27%;
}

html[lang="en"] .heating-compare-matrix-col--safety {
  width: 25%;
}

html[lang="en"] .heating-compare-matrix-col--durability {
  width: 25%;
}

html[lang="en"] .heating-compare-matrix thead th,
html[lang="en"] .heating-compare-matrix tbody th,
html[lang="en"] .heating-compare-matrix tbody td {
  word-break: normal;
  overflow-wrap: normal;
  hyphens: none;
}

html[lang="en"] .heating-compare-matrix thead th {
  font-size: 0.9375rem;
  line-height: 1.35;
  padding: 1rem 0.75rem;
}

html[lang="en"] .heating-compare-matrix tbody th,
html[lang="en"] .heating-compare-matrix tbody td {
  font-size: 0.8125rem;
  line-height: 1.55;
  padding: 1.125rem 0.75rem;
}

html[lang="en"] .heating-compare-matrix-type {
  font-size: 0.875rem;
  line-height: 1.4;
}

html[lang="en"] .heating-compare-matrix-cell--short,
html[lang="en"] .heating-compare-matrix-cell--long,
html[lang="en"] .heating-compare-matrix-cell--long-text {
  white-space: normal;
  overflow-wrap: normal;
  word-break: normal;
}

html[lang="en"] .heating-compare-matrix .comparison-product-name {
  white-space: normal;
  gap: 0.25rem;
}

html[lang="en"] .heating-compare-matrix .comparison-product-type {
  white-space: normal;
}

html[lang="en"] .heating-compare-matrix-card-title {
  font-size: 0.9375rem;
  line-height: 1.35;
}

html[lang="en"] .heating-cta-title {
  max-width: 28rem;
  margin-left: auto;
  margin-right: auto;
  font-size: clamp(1.375rem, 2.2vw, 1.75rem);
  line-height: 1.3;
  overflow-wrap: normal;
  word-break: normal;
}

html[lang="en"] .heating-cta--element .heating-cta-title {
  max-width: 34rem;
  font-size: clamp(1.25rem, 2vw, 1.625rem);
  line-height: 1.3;
}

html[lang="en"] .heating-cta-desc {
  max-width: 40rem;
  font-size: 0.9375rem;
  line-height: 1.65;
}

html[lang="en"] .heating-cta--element .heating-cta-desc {
  max-width: 42rem;
}

html[lang="en"] .heating-cta .btn {
  white-space: normal;
  line-height: 1.35;
  max-width: 100%;
}

html[lang="en"] .heating-patent-link {
  display: inline-block;
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: normal;
}

@media (max-width: 1280px) and (min-width: 1025px) {
  html[lang="en"] .heating-hero-grid--element {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 0.95fr);
  }

  html[lang="en"] .heating-hero-title--element {
    font-size: clamp(1.375rem, 1.85vw, 2rem);
  }

  html[lang="en"] .heating-fir-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1024px) and (min-width: 768px) {
  html[lang="en"] .heating-hero-title--element {
    font-size: clamp(1.625rem, 3.2vw, 2.125rem);
    max-width: 22rem;
  }

  html[lang="en"] .heating-fir-title {
    max-width: none;
  }

  html[lang="en"] .heating-compare-matrix thead th {
    font-size: 0.8125rem;
  }

  html[lang="en"] .heating-compare-matrix tbody th,
  html[lang="en"] .heating-compare-matrix tbody td {
    font-size: 0.75rem;
    padding: 1rem 0.625rem;
  }
}

@media (max-width: 767px) {
  html[lang="en"] .heating-hero-title--element {
    font-size: clamp(1.375rem, 6.5vw, 1.75rem);
    max-width: none;
  }

  html[lang="en"] .heating-hero-title--element .heating-hero-title-line {
    display: inline;
  }

  html[lang="en"] .heating-hero-title--element .heating-hero-title-line + .heating-hero-title-line::before {
    content: ' ';
  }

  html[lang="en"] .heating-fir-title {
    max-width: none;
    font-size: clamp(1.375rem, 6vw, 1.75rem);
  }

  html[lang="en"] .heating-fir-card-title {
    min-height: 0;
  }

  html[lang="en"] .heating-cta--element .heating-cta-title,
  html[lang="en"] .heating-cta-title {
    max-width: none;
  }

  html[lang="en"] .type-selector--heating .type-btn {
    min-height: 56px;
    font-size: 1rem;
    line-height: 1.35;
    padding: 0.875rem 1.125rem;
  }
}

/* ---------- Mobile overflow safety (real devices) ---------- */
@media (max-width: 768px) {
  .heating-ir-stat-item--org {
    min-width: 0;
  }

  .heating-ir-stat-org {
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .product-type-card,
  .connector-app-card,
  .home-product-card,
  .heating-fir-card,
  .heating-feature-card,
  .heating-capability-card,
  .cert-card,
  .contact-form-card,
  .type-btn,
  .page-hero-title,
  .section-title,
  .contact-form-title,
  .heating-fir-card-title,
  .heating-feature-card-title,
  .home-product-card-title {
    overflow-wrap: anywhere;
    max-width: 100%;
  }

  .type-btn,
  .product-type-zoom-btn {
    white-space: normal;
  }

  /* Tables may scroll internally; never force page-level min widths */
  .spec-table-wrap,
  .heating-compare-matrix-wrap {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* 導電條尺寸表：手機／小平板優先固定完整顯示，不預設水平捲動 */
  .spec-table-wrap.spec-table-wrap--dim {
    overflow-x: visible;
    overflow-y: visible;
    -webkit-overflow-scrolling: auto;
    padding-inline: 2px;
  }

  .spec-table-wrap--dim .spec-table {
    width: calc(100% - 4px);
    max-width: calc(100% - 4px);
    box-sizing: border-box;
  }

  /* Keep pitch / symbol values on one line */
  .spec-table--tg tbody td:nth-child(n + 2):not([colspan]),
  .spec-table--tg thead th:nth-child(n + 4),
  .spec-table--ir-dim tbody td:nth-child(n + 2):not([colspan]),
  .spec-table--ir-dim thead th:nth-child(n + 4) {
    white-space: nowrap;
    word-break: keep-all;
    overflow-wrap: normal;
  }

  html[lang="en"] .spec-table--tg thead th:nth-child(1),
  html[lang="en"] .spec-table--tg tbody th,
  html[lang="en"] .spec-table--ir-dim thead th:nth-child(1),
  html[lang="en"] .spec-table--ir-dim tbody th {
    min-width: 0;
    white-space: normal;
  }

  html[lang="en"] .spec-table--tg tbody td:nth-child(n + 2):not([colspan]),
  html[lang="en"] .spec-table--tg thead th:nth-child(n + 4),
  html[lang="en"] .spec-table--ir-dim tbody td:nth-child(n + 2):not([colspan]),
  html[lang="en"] .spec-table--ir-dim thead th:nth-child(n + 4) {
    white-space: nowrap;
    word-break: keep-all;
    overflow-wrap: normal;
  }

  .product-type-diagram,
  .product-type-diagram img,
  .product-type-diagram svg,
  .contact-dim-preview img,
  .contact-dim-preview svg {
    width: 100%;
    max-width: 100%;
    height: auto;
  }

  .patent-tech-badge {
    white-space: normal;
    max-width: 100%;
  }
}


/* =============================================
   Heating products catalog (heating-products.html)
   ============================================= */

.page-heating-products .inner-page-hero--hp-compact {
  min-height: 0;
  padding-block: clamp(1.35rem, 2.2vw, 1.85rem);
}

.page-heating-products .inner-page-hero--hp-compact .inner-page-hero__content {
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-heating-products .inner-page-hero--hp-compact .page-hero-title {
  margin-bottom: 0.35rem;
}

.page-heating-products .inner-page-hero--hp-compact .page-hero-desc {
  margin-bottom: 0;
  max-width: 40rem;
}

.page-heating-products .hp-page {
  padding-top: var(--space-lg);
  padding-bottom: var(--space-3xl);
}

.hp-subnav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.hp-subnav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-sm);
  line-height: 1.3;
  transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}

.hp-subnav-link:hover,
.hp-subnav-link:focus-visible {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.hp-subnav-link.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.hp-section {
  margin-bottom: var(--space-3xl);
  scroll-margin-top: calc(var(--header-height) + 1.5rem);
}

.hp-section-head {
  max-width: 48rem;
  margin-bottom: var(--space-xl);
}

.hp-section-title {
  margin: 0 0 var(--space-sm);
  color: var(--color-primary-dark);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hp-section-desc {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.7;
}

.hp-list {
  margin: 0.75rem 0 0;
  padding-left: 1.15rem;
  color: var(--color-text);
  font-size: var(--text-sm);
  line-height: 1.65;
}

.hp-list li + li {
  margin-top: 0.35rem;
}

.hp-grid,
.hp-comp-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: stretch;
}

@media (min-width: 640px) {
  .hp-grid,
  .hp-comp-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .hp-grid,
  .hp-comp-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.hp-card,
.hp-comp-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100%;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.hp-card-media {
  position: relative;
  flex: 0 0 auto;
  aspect-ratio: 4 / 3;
  height: auto;
  background: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border-light);
  overflow: hidden;
}

.hp-card-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  padding: 0.75rem;
  box-sizing: border-box;
}

.hp-card-ph {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  color: var(--color-text-light);
  background: var(--color-bg-subtle);
  text-align: center;
  padding: 1rem;
  box-sizing: border-box;
}

.hp-card-ph span {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.hp-card-ph small {
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
}

.hp-card-body {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  gap: 0.5rem;
  padding: 1rem 1.05rem 1.15rem;
  min-height: 0;
}

.hp-card-model {
  margin: 0;
  min-height: 1.2em;
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hp-card-name {
  margin: 0;
  min-height: 2.7em;
  color: var(--color-text);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hp-card-summary {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 4.65em;
}

.hp-card-specs {
  margin: 0;
  padding-left: 1.05rem;
  color: var(--color-text);
  font-size: var(--text-xs);
  line-height: 1.5;
  max-height: 4.5em;
  overflow: hidden;
}

.hp-card-link {
  display: inline-flex;
  align-self: flex-start;
  margin-top: auto;
  padding-top: 0.55rem;
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.hp-card-link:hover,
.hp-card-link:focus-visible {
  border-bottom-color: currentColor;
}

.hp-details-section {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.hp-detail {
  margin-bottom: 1.15rem;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  scroll-margin-top: calc(var(--header-height) + 1.5rem);
}

.hp-detail.is-open {
  border-color: var(--color-primary-mid);
  box-shadow: var(--shadow-md);
}

.hp-detail-inner {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: 0;
}

@media (min-width: 900px) {
  .hp-detail-inner {
    grid-template-columns: minmax(0, 40%) minmax(0, 60%);
    gap: 0;
  }
}

.hp-detail-media {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 900px) {
  .hp-detail-media {
    aspect-ratio: 4 / 3;
    min-height: 0;
    height: auto;
    align-self: start;
    position: sticky;
    top: calc(var(--header-height) + 1.25rem);
    border-bottom: 0;
    border-right: 1px solid var(--color-border-light);
  }
}

.hp-detail-zoom {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
  line-height: 0;
  transition: background-color 0.2s ease;
}

.hp-detail-zoom:hover,
.hp-detail-zoom:focus-visible {
  background: rgba(15, 23, 42, 0.03);
}

.hp-detail-zoom:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.hp-detail-media img,
.hp-detail-zoom img {
  width: 100%;
  height: 100%;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  padding: 1rem;
  box-sizing: border-box;
  transition: transform 0.2s ease;
}

.hp-detail-zoom:hover img,
.hp-detail-zoom:focus-visible img {
  transform: scale(1.015);
}

.hp-detail-media--empty {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hp-detail-content {
  padding: 1.15rem 1.25rem 1.4rem;
  min-width: 0;
}

.hp-detail-model {
  margin: 0 0 0.25rem;
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
}

.hp-detail-title {
  margin: 0 0 1rem;
  color: var(--color-primary-dark);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.35;
}

.hp-detail-block + .hp-detail-block {
  margin-top: 1rem;
}

.hp-detail-heading {
  margin: 0 0 0.4rem;
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 700;
}

.hp-detail-text {
  margin: 0;
  color: var(--color-text);
  font-size: var(--text-sm);
  line-height: 1.7;
}

.hp-back-link {
  display: inline-flex;
  margin-top: 1.1rem;
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
}

.hp-back-link:hover,
.hp-back-link:focus-visible {
  text-decoration: underline;
}

.hp-page-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.heating-catalog-entry {
  margin-top: var(--space-lg);
  padding: 1rem 1.1rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg-subtle);
}

.heating-catalog-entry-title {
  margin: 0 0 0.35rem;
  color: var(--color-primary-dark);
  font-size: var(--text-base);
  font-weight: 700;
}

.heating-catalog-entry-text {
  margin: 0 0 0.85rem;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.heating-catalog-entry-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.heating-sidebar-catalog-link {
  display: block;
  margin-top: 0.85rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  text-align: center;
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 650;
  background: var(--color-white);
}

.heating-sidebar-catalog-link:hover,
.heating-sidebar-catalog-link:focus-visible {
  background: var(--color-primary);
  color: var(--color-white);
}

.hp-detail-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.hp-detail-gallery figure {
  margin: 0;
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-subtle);
}

.hp-detail-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  display: block;
  padding: 0.5rem;
  box-sizing: border-box;
}

.hp-detail-gallery figcaption {
  padding: 0.45rem 0.6rem 0.65rem;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  line-height: 1.45;
  border-top: 1px solid var(--color-border-light);
}


/* Heating product detail pages (split catalog) */
.hp-overview-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: var(--space-xl);
}

.page-heating-product .hp-product-page {
  padding-top: var(--space-lg);
  padding-bottom: var(--space-3xl);
}

.hp-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.45rem;
  margin: 0 0 0.85rem;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.4;
}

.hp-breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
}

.hp-breadcrumb a:hover,
.hp-breadcrumb a:focus-visible {
  text-decoration: underline;
}

.hp-breadcrumb-sep {
  color: var(--color-text-light);
}

.hp-back-row {
  margin: 0 0 1.25rem;
}

.hp-back-overview {
  display: inline-flex;
  align-items: center;
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
}

.hp-back-overview:hover,
.hp-back-overview:focus-visible {
  text-decoration: underline;
}

.hp-product-detail {
  margin-bottom: var(--space-2xl);
}

.hp-product-detail-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  overflow: hidden;
}

@media (min-width: 900px) {
  .hp-product-detail-top {
    grid-template-columns: minmax(0, 0.4fr) minmax(0, 0.6fr);
    align-items: start;
  }

  .hp-product-detail-top .hp-detail-media {
    border-bottom: 0;
    border-right: 1px solid var(--color-border-light);
  }
}

.hp-product-detail-main {
  padding: 1.15rem 1.25rem 1.4rem;
  min-width: 0;
}

.hp-product-title {
  margin: 0 0 1rem;
  color: var(--color-primary-dark);
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  font-weight: 700;
  line-height: 1.35;
}

.hp-product-detail-body {
  margin-top: 1.35rem;
  padding-top: 0.25rem;
}

.hp-product-detail-body > .hp-detail-block,
.hp-product-detail-body > .hp-detail-gallery {
  border: 1px solid var(--color-border);
  background: var(--color-white);
  padding: 1.1rem 1.2rem 1.25rem;
  margin-bottom: 1rem;
}

.hp-product-detail-body > .hp-detail-gallery {
  padding-bottom: 1rem;
}

.hp-detail-usage .hp-usage-zoom {
  position: relative;
  display: block;
  width: 100%;
  margin: 0.35rem 0 0;
  padding: 0.75rem;
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-subtle);
  cursor: zoom-in;
  text-align: left;
  transition: background-color 0.2s ease;
}

.hp-detail-usage .hp-usage-zoom:hover,
.hp-detail-usage .hp-usage-zoom:focus-visible {
  background: rgba(15, 23, 42, 0.03);
}

.hp-detail-usage .hp-usage-zoom:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.hp-detail-usage .hp-usage-zoom img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: contain;
  object-position: center;
  background: #fff;
}

.hp-product-pager {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
  margin: 0 0 var(--space-2xl);
  padding: 1rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 700px) {
  .hp-product-pager {
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
  }

  .hp-product-pager-link:last-child {
    justify-self: end;
    text-align: right;
  }

  .hp-product-pager-link--center {
    justify-self: center;
  }
}

.hp-product-pager-link {
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
}

.hp-product-pager-link:hover,
.hp-product-pager-link:focus-visible {
  text-decoration: underline;
}

.hp-related {
  margin-top: var(--space-lg);
}

.hp-related .hp-section-title {
  margin-bottom: var(--space-lg);
}

.hp-related .hp-grid {
  margin-bottom: 0;
}

/* ---------- Heating components catalog / detail ---------- */
a.hp-comp-card--link {
  text-decoration: none;
  color: inherit;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

a.hp-comp-card--link:hover,
a.hp-comp-card--link:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.08);
  outline: none;
}

a.hp-comp-card--link .hp-card-link {
  margin-top: auto;
}

.hp-card-media--comp {
  aspect-ratio: 4 / 3;
  min-height: 12.5rem;
}

@media (min-width: 640px) {
  .hp-card-media--comp {
    min-height: 14rem;
  }
}

.hp-comp-detail-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: start;
}

@media (min-width: 900px) {
  .hp-comp-detail-top {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); /* ~61% / 39% */
    gap: 1.5rem;
  }
}

.hp-comp-detail-media {
  min-width: 0;
}

.hp-comp-zoom {
  position: relative;
  display: block;
  width: 100%;
  margin: 0;
  padding: 0.85rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg-subtle);
  cursor: zoom-in;
  text-align: left;
}

.hp-comp-zoom:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.hp-comp-zoom img {
  display: block;
  width: 100%;
  height: auto;
  max-height: min(72vh, 52rem);
  object-fit: contain;
  object-position: center;
  background: #fff;
}

.hp-comp-zoom-hint {
  position: absolute;
  right: 0.85rem;
  top: 0.85rem;
  padding: 0.3rem 0.55rem;
  border-radius: var(--radius-sm);
  background: rgba(15, 23, 42, 0.72);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
  pointer-events: none;
}

.hp-comp-thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(7.5rem, 1fr));
  gap: 0.65rem;
  margin-top: 0.75rem;
}

.hp-comp-thumb {
  display: block;
  margin: 0;
  padding: 0.4rem;
  border: 1px solid var(--color-border-light);
  background: var(--color-white);
  cursor: zoom-in;
}

.hp-comp-thumb img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: var(--color-bg-subtle);
}

.hp-comp-detail-main {
  min-width: 0;
  padding: 0.15rem 0 0;
}

.hp-comp-detail-main .hp-product-title {
  margin-bottom: 1rem;
}

.hp-image-lightbox {
  max-width: none;
  max-height: none;
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: #fff;
}

.hp-image-lightbox::backdrop {
  background: rgba(8, 12, 20, 0.88);
}

.hp-image-lightbox__close {
  position: fixed;
  top: max(0.75rem, env(safe-area-inset-top));
  right: max(0.75rem, env(safe-area-inset-right));
  z-index: 2;
  width: 2.75rem;
  height: 2.75rem;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
}

.hp-image-lightbox__close:hover,
.hp-image-lightbox__close:focus-visible {
  background: rgba(255, 255, 255, 0.28);
}

.hp-image-lightbox__stage {
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: max(3.5rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) max(1rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
}

.hp-image-lightbox__stage img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

/* Explicit width prevents intrinsic shrink-to-fit on mobile WebKit. */
@media (max-width: 900px) {
  .product-overview-layout { min-width: 0; grid-template-columns: minmax(0, 1fr); }
  .product-overview-media { width: 100%; box-sizing: border-box; }
  .product-overview-image { width: 100%; box-sizing: border-box; }
  .product-overview-image > .product-type-zoom { flex: 0 0 100%; min-width: 0; width: 100%; }
}