.product-detail-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(420px, 0.82fr);
  min-height: 820px;
  padding-top: 76px;
  background: var(--paper);
}

.product-detail-gallery {
  position: relative;
  min-height: 744px;
  overflow: hidden;
  background: var(--paper-deep);
}

.product-detail-gallery > img {
  height: 100%;
  object-fit: cover;
  filter: saturate(0.76);
}

.product-detail-secondary {
  position: absolute;
  right: 34px;
  bottom: 34px;
  width: min(34%, 270px);
  aspect-ratio: 0.82;
  padding: 8px;
  background: var(--ivory);
  box-shadow: var(--shadow);
}

.product-detail-secondary img {
  height: 100%;
  object-fit: cover;
}

.product-detail-summary {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(60px, 7vw, 110px);
  background: var(--white);
}

.product-back {
  width: fit-content;
  margin-bottom: 70px;
  color: var(--muted);
  font-size: 12px;
}

.product-detail-summary > p:first-of-type,
.product-specification header > p,
.product-customization > div:first-child > p,
.product-application > div:last-child > p:first-child,
.product-detail-cta p {
  margin: 0 0 20px;
  color: var(--champagne);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.17em;
}

.product-detail-summary h1 {
  margin: 0;
  font-size: clamp(48px, 5vw, 76px);
  line-height: 1.08;
}

#product-name-en {
  display: block;
  margin-top: 12px;
  color: var(--muted);
  font: 400 18px/1.5 Georgia, "Times New Roman", serif;
}

#product-description {
  margin: 34px 0 0;
  color: var(--body);
  font-size: 16px;
  line-height: 1.95;
}

.summary-actions {
  display: grid;
  gap: 12px;
  margin-top: 38px;
}

.summary-actions a,
.product-detail-cta a {
  display: grid;
  place-items: center;
  min-height: 56px;
  padding: 14px 20px;
  border: 1px solid var(--olive);
  font-size: 13px;
  font-weight: 700;
}

.summary-actions a:first-child,
.product-detail-cta a:first-child {
  color: var(--white);
  background: var(--olive);
}

.product-specification,
.product-customization,
.product-application {
  width: min(var(--content), calc(100% - 48px));
  margin-inline: auto;
  padding: clamp(100px, 11vw, 160px) 0;
}

.product-specification header {
  display: grid;
  grid-template-columns: 0.65fr 1fr 0.8fr;
  align-items: end;
  gap: 48px;
  margin-bottom: 64px;
}

.product-specification h2,
.product-customization h2,
.product-application h2,
.product-detail-cta h2 {
  margin: 0;
  font-size: clamp(38px, 4vw, 60px);
  line-height: 1.15;
}

.product-specification header > span {
  color: var(--body);
  font-size: 13px;
  line-height: 1.8;
}

#product-spec-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

#product-spec-list > div {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 24px;
  min-height: 112px;
  padding: 28px 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

#product-spec-list dt {
  color: var(--muted);
  font-size: 12px;
}

#product-spec-list dd {
  margin: 0;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.7;
}

.product-customization {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 80px;
  border-top: 1px solid var(--line);
}

#product-custom-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

#product-custom-options article {
  min-height: 190px;
  padding: 32px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

#product-custom-options span {
  color: var(--champagne);
  font: 400 22px/1 Georgia, "Times New Roman", serif;
}

#product-custom-options h3 {
  margin: 46px 0 12px;
  font-size: 20px;
}

#product-custom-options p {
  margin: 0;
  color: var(--body);
  font-size: 13px;
  line-height: 1.7;
}

.product-application {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  align-items: stretch;
  padding-top: 0;
}

.product-application-image {
  min-height: 560px;
}

.product-application-image img {
  height: 100%;
  object-fit: cover;
  filter: saturate(0.75);
}

.product-application > div:last-child {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(50px, 6vw, 90px);
  color: var(--white);
  background: var(--olive-dark);
}

#product-application-text {
  margin: 30px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 16px;
  line-height: 1.9;
}

#product-application-en {
  display: block;
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.56);
  font-size: 13px;
  line-height: 1.8;
}

.product-detail-cta {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 50px;
  padding: clamp(80px, 9vw, 130px) max(24px, calc((100vw - var(--content)) / 2));
  color: var(--white);
  background: var(--ink-soft);
}

.product-detail-cta > div:last-child {
  display: grid;
  grid-template-columns: repeat(2, minmax(190px, 1fr));
  gap: 12px;
}

.product-detail-cta span {
  display: block;
  margin-top: 15px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
}

.product-detail-cta a {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.52);
}

@media (max-width: 980px) {
  .product-detail-hero {
    grid-template-columns: 1fr;
  }

  .product-detail-gallery {
    min-height: 640px;
  }

  .product-detail-summary {
    padding: 70px 48px;
  }

  .product-back {
    margin-bottom: 45px;
  }

  .product-specification header {
    grid-template-columns: 0.7fr 1.3fr;
  }

  .product-specification header > span {
    grid-column: 2;
  }

  .product-customization,
  .product-application,
  .product-detail-cta {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 650px) {
  .product-detail-hero {
    padding-top: 66px;
  }

  .product-detail-gallery {
    min-height: 480px;
  }

  .product-detail-secondary {
    right: 18px;
    bottom: 18px;
    width: 34%;
  }

  .product-detail-summary {
    padding: 56px 24px;
  }

  .product-detail-summary h1 {
    font-size: 44px;
  }

  .product-specification,
  .product-customization,
  .product-application {
    width: calc(100% - 40px);
  }

  .product-specification header {
    grid-template-columns: 1fr;
  }

  .product-specification header > span {
    grid-column: auto;
  }

  #product-spec-list,
  #product-custom-options {
    grid-template-columns: 1fr;
  }

  #product-spec-list > div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .product-customization {
    gap: 44px;
  }

  .product-application-image {
    min-height: 360px;
  }

  .product-application > div:last-child {
    padding: 52px 26px;
  }

  .product-detail-cta {
    padding-inline: 24px;
  }

  .product-detail-cta > div:last-child {
    grid-template-columns: 1fr;
  }
}