.materials-page {
  background:
    radial-gradient(circle at 8% 12%, rgba(127, 155, 85, 0.1), transparent 25%),
    linear-gradient(180deg, #fffdfa 0%, var(--surface-page) 58%, #f1eee3 100%);
}

.materials-page :where(h1, h2, h3, p, a, li) {
  overflow-wrap: anywhere;
}

.materials-hero {
  overflow: hidden;
}

.materials-hero-grid {
  width: min(var(--container-hero-content), calc(100% - var(--container-hero-gutter)));
  min-height: clamp(660px, 78vh, 820px);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(360px, 0.74fr) minmax(0, 1.26fr);
  align-items: stretch;
}

.materials-hero-copy {
  position: relative;
  z-index: 2;
  min-width: 0;
  padding: var(--space-16) clamp(var(--space-8), 4vw, var(--space-16)) var(--space-16) 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.materials-kicker {
  width: fit-content;
  margin-bottom: var(--space-4);
  display: grid;
  grid-template-columns: auto minmax(54px, 112px) 22px;
  align-items: center;
  gap: var(--space-3);
  color: #557232;
}

.materials-kicker span:first-child,
.material-system-number {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1;
}

.materials-kicker span:first-child {
  font-size: 34px;
}

.materials-kicker span:nth-child(2),
.materials-rule-heading > span,
.materials-next-inner::before {
  height: 1px;
  background: currentColor;
}

.materials-hero-title {
  max-width: 760px;
  margin: 0;
  color: var(--green-950);
  font-family: var(--font-display);
  font-size: clamp(58px, 5.4vw, 80px);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.01em;
}

.materials-hero-line {
  max-width: 620px;
  margin: var(--space-5, 20px) 0 0;
  color: #53633b;
  font-family: var(--font-ui), var(--font-cjk);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.36;
}

.materials-copy {
  max-width: 560px;
  margin: var(--space-6) 0 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
}

.materials-back-link,
.materials-collections-link,
.materials-next-link {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--green-950);
  font-family: var(--font-ui), var(--font-cjk);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  transition:
    color 150ms ease,
    transform 150ms ease;
}

.materials-back-link {
  margin-top: var(--space-4);
}

.materials-back-link svg {
  transform: rotate(180deg);
}

.materials-back-link:hover,
.materials-back-link:focus-visible,
.materials-collections-link:hover,
.materials-collections-link:focus-visible,
.materials-next-link:hover,
.materials-next-link:focus-visible {
  color: var(--green-800);
}

.materials-back-link:hover,
.materials-back-link:focus-visible {
  transform: translateX(-3px);
}

.materials-next-link:hover,
.materials-next-link:focus-visible {
  transform: translateX(3px);
}

.materials-collections-link {
  margin-top: var(--space-6);
  padding: 14px 18px;
  border: 1px solid rgba(10, 70, 42, 0.26);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.82);
  box-shadow: var(--shadow-soft);
}

.materials-collections-link:hover,
.materials-collections-link:focus-visible {
  border-color: rgba(10, 70, 42, 0.46);
  transform: translateX(3px);
}

.materials-collections-link:active {
  transform: translateX(3px) scale(0.98);
}

.materials-hero-media {
  position: relative;
  min-height: 620px;
  margin: 0 calc((100vw - min(var(--container-hero-content), calc(100vw - var(--container-hero-gutter)))) / -2) 0 -10%;
  overflow: hidden;
  background: var(--warm);
}

.materials-hero-media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(255, 253, 247, 0.98) 0%, rgba(255, 253, 247, 0.7) 18%, rgba(255, 253, 247, 0.12) 42%, rgba(255, 253, 247, 0) 72%),
    linear-gradient(180deg, rgba(255, 253, 247, 0) 68%, rgba(255, 253, 247, 0.84) 100%);
  pointer-events: none;
}

.materials-hero-media img,
.material-system-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.materials-hero-media img {
  min-height: inherit;
  object-position: center right;
  filter: saturate(0.95) contrast(1.02) brightness(1.02);
}

.material-principles {
  container-type: inline-size;
  margin-top: calc(var(--space-8) * -1);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.material-principles article {
  min-height: 154px;
  padding: var(--space-6);
  display: grid;
  place-items: center;
  align-content: center;
  gap: var(--space-3);
  text-align: center;
  border-right: 1px solid var(--line);
}

.material-principles article:last-child {
  border-right: 0;
}

.principle-icon {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  color: var(--green-950);
}

.material-principles h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-ui), var(--font-cjk);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.28;
}

.materials-intro {
  padding: var(--space-16) 0 var(--space-8);
}

.materials-intro-inner {
  text-align: center;
}

.materials-rule-heading {
  display: grid;
  grid-template-columns: minmax(72px, 1fr) auto minmax(72px, 1fr);
  gap: var(--space-6);
  align-items: center;
  color: rgba(155, 107, 43, 0.44);
}

.materials-rule-heading h2 {
  margin: 0;
  color: var(--green-950);
  font-family: var(--font-ui), var(--font-cjk);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.materials-intro p {
  max-width: 880px;
  margin: var(--space-6) auto 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
}

.material-systems {
  padding: var(--space-8) 0 var(--space-16);
}

.material-systems-header {
  max-width: 860px;
  margin-bottom: var(--space-8);
}

.section-eyebrow {
  margin: 0 0 var(--space-3);
  color: var(--gold);
  font-family: var(--font-ui), var(--font-cjk);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.material-systems-header h2,
.materials-next h2 {
  margin: 0;
  color: var(--green-950);
  font-family: var(--font-display);
  font-size: clamp(36px, 3.2vw, 48px);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: 0;
}

.material-system-card {
  scroll-margin-top: calc(104px + var(--space-6));
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(0, 1.04fr);
  gap: var(--space-8);
  align-items: stretch;
  padding: var(--space-8) 0;
  border-top: 1px solid var(--border-soft);
}

.material-system-card:last-child {
  border-bottom: 1px solid var(--border-soft);
}

.material-system-card--reverse .material-system-media {
  order: 2;
}

.material-system-card--reverse .material-system-copy {
  order: 1;
}

.material-system-media {
  min-height: 390px;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--warm);
  box-shadow: 0 18px 34px rgba(22, 36, 29, 0.08);
}

.material-system-media img {
  min-height: inherit;
  filter: saturate(0.96) contrast(1.01) brightness(1.01);
}

.material-system-copy {
  min-width: 0;
  padding: var(--space-4) 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.material-system-number {
  width: fit-content;
  margin: 0 0 var(--space-4);
  color: #637a3b;
  font-size: 38px;
}

.material-system-copy h3 {
  max-width: 660px;
  margin: 0;
  color: var(--green-950);
  font-family: var(--font-display);
  font-size: clamp(36px, 3.6vw, 56px);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: 0;
}

.material-system-copy p:not(.material-system-number) {
  max-width: 680px;
  margin: var(--space-5, 20px) 0 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.64;
}

.material-feature-list {
  max-width: 760px;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-6);
  list-style: none;
}

.material-feature-list li {
  min-width: 0;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: var(--space-2);
  align-items: center;
  color: var(--ink);
  font-family: var(--font-ui), var(--font-cjk);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.32;
}

.material-feature-list svg {
  color: #557232;
}

.materials-next {
  padding: var(--space-10) 0 var(--space-16);
  background:
    linear-gradient(180deg, rgba(255, 253, 247, 0.74), rgba(240, 237, 224, 0.86)),
    url("../about/applications-hero-products.webp") center 58% / cover no-repeat;
}

.materials-next-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.materials-next-inner::before {
  content: "";
  position: absolute;
  top: calc(var(--space-6) * -1);
  left: 0;
  right: 0;
  color: rgba(155, 107, 43, 0.44);
}

.materials-next-link {
  flex: 0 0 auto;
  padding: 15px 20px;
  border: 1px solid rgba(10, 70, 42, 0.24);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.82);
  box-shadow: var(--shadow-soft);
}

body[data-current-lang="zh"] .materials-hero-title,
body[data-current-lang="zh"] .material-systems-header h2,
body[data-current-lang="zh"] .material-system-copy h3,
body[data-current-lang="zh"] .materials-next h2 {
  font-family: var(--font-cjk);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: 0;
}

@media (max-width: 1100px) {
  .materials-hero-grid {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .materials-hero-copy {
    padding: var(--space-16) 0 var(--space-8);
  }

  .materials-hero-title {
    max-width: 840px;
    font-size: 58px;
  }

  .materials-hero-media {
    min-height: 430px;
    margin: 0 calc(var(--container-gutter) / -2);
    border-radius: var(--radius) var(--radius) 0 0;
  }

  .material-system-card,
  .material-system-card--reverse {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .material-system-card--reverse .material-system-media,
  .material-system-card--reverse .material-system-copy {
    order: initial;
  }

  .material-system-media {
    min-height: 360px;
  }
}

@media (max-width: 680px) {
  .materials-hero-copy {
    padding: var(--space-10) 0 var(--space-8);
  }

  .materials-hero-title {
    font-size: 42px;
    letter-spacing: 0;
  }

  .materials-hero-line {
    font-size: 18px;
  }

  .materials-hero-media {
    min-height: 280px;
  }

  .material-principles {
    margin-top: var(--space-6);
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .material-principles article {
    border-right: 1px solid var(--line);
  }

  .material-principles article:nth-child(2n) {
    border-right: 0;
  }

  .material-principles article:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .material-principles article {
    min-height: 132px;
    padding: var(--space-4);
  }

  .materials-rule-heading {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .materials-rule-heading > span {
    display: none;
  }

  .materials-rule-heading h2 {
    font-size: 18px;
  }

  .material-systems {
    padding-bottom: var(--space-10);
  }

  .material-system-card {
    padding: var(--space-6) 0;
  }

  .material-system-media {
    min-height: 250px;
  }

  .material-system-copy h3 {
    font-size: 32px;
  }

  .material-feature-list {
    grid-template-columns: 1fr;
  }

  .materials-next-inner {
    align-items: stretch;
    flex-direction: column;
  }

  .materials-next-link {
    width: 100%;
    justify-content: center;
  }
}