.subpage {
  background: var(--bg);
}

.subpage .nav {
  position: fixed;
}

.subpage-main {
  min-height: 100vh;
}

.subpage-hero {
  position: relative;
  min-height: 40rem;
  display: grid;
  align-items: start;
  overflow: hidden;
  background: #f7f8f5;
  color: var(--ink-muted);
}

.subpage-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: 4.5rem;
  right: 0;
  bottom: 0;
  width: min(38vw, 34rem);
  background-image:
    url("/assets/biofilm-wave.png"),
    url("/assets/rust-wave.png");
  background-repeat: no-repeat;
  background-position:
    right 1.5rem center,
    left 2rem bottom 1.5rem;
  background-size:
    min(22vw, 18rem) auto,
    min(14vw, 11rem) auto;
  opacity: 0.13;
  pointer-events: none;
}

.subpage--rust .subpage-hero::before {
  background-image:
    url("/assets/rust-wave.png"),
    url("/assets/biofilm-wave.png");
}

.subpage-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: rgba(0, 102, 0, 0.16);
}

.subpage-hero__media {
  display: none;
}

.subpage-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(21rem, 0.8fr);
  column-gap: clamp(3rem, 10vw, 10rem);
  width: 100%;
  padding-block: 6.75rem 6rem;
}

.subpage-breadcrumb {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 2rem;
  color: var(--ink-muted);
  font-size: 0.76rem;
  font-weight: 700;
}

.subpage-breadcrumb a {
  color: var(--ink-muted);
  text-decoration: none;
}

.subpage-breadcrumb span[aria-hidden] {
  color: #006600;
}

.subpage-hero .eyebrow {
  grid-column: 1 / -1;
  margin-bottom: 1rem;
  color: var(--ink-muted);
}

.subpage-hero .eyebrow::after {
  content: none;
}

.subpage-hero h1 {
  grid-column: 1;
  max-width: 15ch;
  margin: 0;
  color: var(--ink-muted);
  font-family: var(--font-head);
  font-size: clamp(2.8rem, 4vw, 4.35rem);
  font-style: normal;
  font-weight: 400;
  line-height: 1.03;
  letter-spacing: 0;
}

.subpage-hero__lead {
  grid-column: 2;
  align-self: end;
  max-width: 43rem;
  margin: 0 0 0.35rem;
  color: var(--ink-muted);
  font-size: clamp(1.02rem, 1.4vw, 1.18rem);
  line-height: 1.65;
}

.subpage-preview {
  padding-block: 6rem 7rem;
  background: #fff;
}

.subpage-preview__inner {
  display: grid;
  grid-template-columns: minmax(18rem, 0.7fr) minmax(28rem, 1.3fr);
  align-items: start;
  gap: 8rem;
}

.subpage-preview__copy {
  position: sticky;
  top: 7rem;
}

.subpage-preview__copy .eyebrow::after {
  content: none;
}

.subpage-preview__copy h2 {
  max-width: 18ch;
  margin: 0 0 1.5rem;
  color: var(--ink-muted);
  font-family: var(--font-head);
  font-size: 2.8rem;
  font-style: normal;
  font-weight: 400;
  line-height: 1.08;
}

.subpage-preview__copy p {
  max-width: 29rem;
  color: var(--ink-muted);
  line-height: 1.65;
}

.subpage-preview__copy a {
  display: inline-flex;
  margin-top: 1rem;
  color: var(--navy);
  font-size: 0.9rem;
  font-weight: 800;
  text-decoration: none;
}

.subpage-preview__list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.subpage-preview__list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--navy);
  font-size: 1rem;
  font-weight: 700;
}

.subpage-content {
  background: #fff;
  color: var(--ink-muted);
}

.subpage-content h2,
.subpage-content h3 {
  color: var(--ink-muted);
  font-family: var(--font-head);
  font-style: normal;
  font-weight: 400;
  letter-spacing: 0;
}

.subpage-content h2 {
  margin: 0;
  font-size: clamp(2.25rem, 3.6vw, 3.65rem);
  line-height: 1.06;
}

.subpage-content h3 {
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.15;
}

.subpage-content p {
  color: var(--ink-muted);
}

.subpage-content .eyebrow {
  margin-bottom: 1rem;
  color: var(--ink-muted);
}

.subpage-content .eyebrow::after {
  content: none;
}

.subpage-intro {
  padding-block: clamp(5.5rem, 9vw, 8.5rem);
  background: #fff;
}

.subpage-intro__inner {
  display: grid;
  grid-template-columns: minmax(18rem, 0.85fr) minmax(25rem, 1.15fr);
  align-items: start;
  gap: clamp(3rem, 8vw, 8rem);
}

.subpage-intro__inner h2 {
  max-width: 17ch;
}

.subpage-intro__text {
  max-width: 42rem;
  padding-top: 2.1rem;
}

.subpage-intro__text p {
  margin: 0;
  font-size: clamp(1.05rem, 1.3vw, 1.18rem);
  line-height: 1.72;
}

.subpage-intro__text p + p {
  margin-top: 1.35rem;
}

.subpage-cards {
  padding-block: clamp(5rem, 8vw, 7.5rem);
  border-block: 1px solid rgba(0, 102, 0, 0.12);
  background: #f7f8f5;
}

.subpage-section-heading {
  display: grid;
  grid-template-columns: minmax(12rem, 0.4fr) minmax(24rem, 1fr);
  align-items: end;
  gap: clamp(2rem, 7vw, 7rem);
  margin-bottom: clamp(3rem, 5vw, 4.5rem);
}

.subpage-section-heading .eyebrow {
  margin: 0 0 0.35rem;
}

.subpage-section-heading h2 {
  max-width: 18ch;
}

.subpage-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid rgba(0, 102, 0, 0.18);
}

.subpage-card {
  position: relative;
  min-height: 18rem;
  padding: 2.2rem 2rem 2rem;
  border-right: 1px solid rgba(0, 102, 0, 0.18);
  color: var(--ink-muted);
  text-decoration: none;
  transition: background-color 220ms ease;
}

.subpage-card:first-child {
  border-left: 1px solid rgba(0, 102, 0, 0.18);
}

.subpage-card:hover {
  background: #fff;
}

.subpage-card__line {
  display: block;
  width: 2.25rem;
  height: 2px;
  margin-bottom: 3.75rem;
  background: #006600;
  transform-origin: left center;
  transition: width 220ms ease;
}

.subpage-card:hover .subpage-card__line {
  width: 4rem;
}

.subpage-card p {
  max-width: 24rem;
  margin: 1rem 0 0;
  line-height: 1.65;
}

.subpage-card__link {
  position: absolute;
  right: 2rem;
  bottom: 1.8rem;
  left: 2rem;
  display: flex;
  justify-content: space-between;
  color: #006600;
  font-size: 0.82rem;
  font-weight: 700;
}

.subpage-detail {
  padding-block: clamp(5.5rem, 10vw, 9rem);
  background: #fff;
}

.subpage-detail__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(22rem, 0.92fr);
  align-items: center;
  gap: clamp(3.5rem, 9vw, 9rem);
}

.subpage-detail__media {
  position: relative;
  aspect-ratio: 4 / 3;
  margin: 0;
  overflow: hidden;
  border-radius: 8px;
  background: #eef0eb;
}

.subpage-detail__media::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(0, 102, 0, 0.12);
  border-radius: inherit;
  pointer-events: none;
}

.subpage-detail__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.subpage-detail__media:hover img {
  transform: scale(1.025);
}

.subpage-detail__copy h2 {
  max-width: 16ch;
}

.subpage-detail__copy > p:not(.eyebrow) {
  max-width: 38rem;
  margin: 1.5rem 0 2rem;
  font-size: 1.05rem;
  line-height: 1.72;
}

.subpage-detail__copy ul {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.subpage-detail__copy li {
  position: relative;
  padding: 0.9rem 0 0.9rem 1.5rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink-muted);
  line-height: 1.45;
}

.subpage-detail__copy li::before {
  content: "";
  position: absolute;
  top: 1.35rem;
  left: 0;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: #006600;
}

.subpage-proof {
  padding-block: clamp(4.5rem, 7vw, 6.5rem);
  border-block: 1px solid rgba(0, 102, 0, 0.15);
  background: #f7f8f5;
}

.subpage-proof__inner {
  display: grid;
  grid-template-columns: minmax(17rem, 0.75fr) minmax(24rem, 1.25fr);
  align-items: center;
  gap: clamp(3rem, 9vw, 9rem);
}

.subpage-proof__value {
  display: flex;
  flex-direction: column;
  padding-left: clamp(1.5rem, 3vw, 3rem);
  border-left: 2px solid #006600;
}

.subpage-proof__value strong {
  color: var(--ink-muted);
  font-family: var(--font-head);
  font-size: clamp(3.5rem, 7vw, 6.8rem);
  font-weight: 400;
  line-height: 0.92;
}

.subpage-proof__value span {
  margin-top: 1rem;
  color: #006600;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.subpage-proof__copy {
  max-width: 41rem;
}

.subpage-proof__copy p {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  line-height: 1.28;
}

.subpage-proof__copy small {
  display: block;
  margin-top: 1.4rem;
  color: #006600;
  font-size: 0.75rem;
  font-weight: 700;
}

.subpage-related {
  padding-block: clamp(5rem, 8vw, 7rem);
  background: #fff;
}

.subpage-related__inner {
  display: grid;
  grid-template-columns: minmax(16rem, 0.65fr) minmax(25rem, 1.35fr);
  gap: clamp(3rem, 9vw, 9rem);
}

.subpage-related__inner h2 {
  font-size: clamp(2.2rem, 3vw, 3.1rem);
}

.subpage-related__links {
  border-top: 1px solid rgba(0, 102, 0, 0.18);
}

.subpage-related__links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 4.5rem;
  padding-inline: 0.15rem;
  border-bottom: 1px solid rgba(0, 102, 0, 0.18);
  color: var(--ink-muted);
  font-weight: 700;
  text-decoration: none;
  transition: color 180ms ease, padding 180ms ease;
}

.subpage-related__links a:hover {
  padding-inline: 0.65rem;
  color: #006600;
}

.subpage-cta {
  padding-block: clamp(4.5rem, 7vw, 6.5rem);
  background: #f7f8f5;
}

.subpage-cta__inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: clamp(2.5rem, 7vw, 7rem);
  padding: clamp(2.25rem, 5vw, 4.5rem);
  border: 1px solid rgba(0, 102, 0, 0.28);
  border-radius: 8px;
  background: #fff;
}

.subpage-cta__inner h2 {
  max-width: 18ch;
  font-size: clamp(2.25rem, 3.5vw, 3.5rem);
}

.subpage-cta__inner p:not(.eyebrow) {
  max-width: 42rem;
  margin: 1.25rem 0 0;
  line-height: 1.65;
}

.subpage-cta .btn--primary {
  flex: 0 0 auto;
  border: 1px solid #008a00;
  background: #fff;
  color: #006600;
  box-shadow: none;
}

.subpage-cta .btn--primary:hover {
  background: #f1fff1;
  color: #006600;
  box-shadow: none;
}

.subpage-footer {
  padding-block: 3.5rem 2rem;
  border-top: 1px solid rgba(0, 138, 0, 0.14);
  background: #fff;
  color: var(--ink-muted);
}

.subpage-footer__main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
}

.subpage-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.15rem;
}

.subpage-footer__brand > a {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.55rem;
}

.subpage-footer__brand img {
  width: auto;
  height: 5rem;
  max-width: min(100%, 10rem);
  object-fit: contain;
  filter: none;
}

.subpage-footer__claim {
  color: var(--ink-muted);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.subpage-footer__awards {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.subpage-footer__awards img {
  width: auto;
  max-width: 9rem;
  height: 2.8rem;
  object-fit: contain;
  object-position: left center;
}

.subpage-footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1.5rem;
}

.subpage-footer a {
  color: var(--ink-muted);
  font-size: 0.82rem;
  text-decoration: none;
}

.subpage-footer a:hover {
  color: var(--navy);
}

.subpage-footer__base {
  display: flex;
  justify-content: flex-end;
  gap: 2rem;
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(0, 138, 0, 0.14);
  font-size: 0.72rem;
}

@media (max-width: 56rem) {
  .subpage-hero {
    min-height: 38rem;
  }

  .subpage-hero::before {
    right: -3rem;
    width: 20rem;
    background-position:
      right center,
      left 3rem bottom 2rem;
    background-size:
      12rem auto,
      8rem auto;
    opacity: 0.07;
  }

  .subpage-hero__inner {
    grid-template-columns: 1fr;
    padding-block: 7rem 5rem;
  }

  .subpage-hero .eyebrow,
  .subpage-hero h1,
  .subpage-hero__lead {
    grid-column: 1;
  }

  .subpage-hero h1 {
    font-size: clamp(2.55rem, 7vw, 3.45rem);
  }

  .subpage-hero__lead {
    max-width: 38rem;
    margin-top: 1.7rem;
  }

  .subpage-preview__inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .subpage-preview__copy {
    position: relative;
    top: auto;
  }

  .subpage-intro__inner,
  .subpage-section-heading,
  .subpage-detail__inner,
  .subpage-proof__inner,
  .subpage-related__inner {
    grid-template-columns: 1fr;
  }

  .subpage-intro__inner,
  .subpage-detail__inner,
  .subpage-proof__inner,
  .subpage-related__inner {
    gap: 3rem;
  }

  .subpage-intro__text {
    padding-top: 0;
  }

  .subpage-section-heading {
    gap: 1rem;
  }

  .subpage-card-grid {
    grid-template-columns: 1fr;
  }

  .subpage-card,
  .subpage-card:first-child {
    min-height: 0;
    padding: 1.75rem 0;
    border-right: 0;
    border-left: 0;
    border-bottom: 1px solid rgba(0, 102, 0, 0.18);
  }

  .subpage-card__line {
    margin-bottom: 2.25rem;
  }

  .subpage-card__link {
    position: static;
    margin-top: 2rem;
  }

  .subpage-detail__inner {
    align-items: start;
  }

  .subpage-detail__media {
    aspect-ratio: 16 / 10;
  }

  .subpage-detail__copy {
    max-width: 42rem;
  }

  .subpage-cta__inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 42rem) {
  .subpage-hero {
    min-height: 36rem;
  }

  .subpage-hero__inner {
    padding-block: 7rem 4rem;
  }

  .subpage-hero::before {
    top: 10rem;
    right: -5rem;
    width: 14rem;
    background-image: url("/assets/biofilm-wave.png");
    background-position: right center;
    background-size: 10rem auto;
    opacity: 0.05;
  }

  .subpage--rust .subpage-hero::before {
    background-image: url("/assets/rust-wave.png");
  }

  .subpage-breadcrumb {
    margin-bottom: 2rem;
  }

  .subpage-hero h1 {
    font-size: clamp(2.05rem, 9vw, 2.55rem);
  }

  .subpage-hero__lead {
    font-size: 1rem;
  }

  .subpage-preview {
    padding-block: 4.5rem 5rem;
  }

  .subpage-preview__copy h2 {
    font-size: 2.15rem;
  }

  .subpage-content h2 {
    font-size: clamp(1.85rem, 8vw, 2.25rem);
  }

  .subpage-intro,
  .subpage-cards,
  .subpage-detail,
  .subpage-proof,
  .subpage-related,
  .subpage-cta {
    padding-block: 4.5rem;
  }

  .subpage-card {
    padding-block: 1.5rem;
  }

  .subpage-detail__media {
    aspect-ratio: 4 / 3;
  }

  .subpage-proof__value {
    padding-left: 1.25rem;
  }

  .subpage-proof__copy p {
    font-size: 1.45rem;
  }

  .subpage-cta__inner {
    padding: 1.5rem;
  }

  .subpage-cta .btn {
    width: 100%;
    justify-content: center;
  }

  .subpage-footer__main,
  .subpage-footer__base {
    align-items: flex-start;
    flex-direction: column;
  }

  .subpage-footer__links {
    justify-content: flex-start;
  }
}

@media (max-width: 24rem) {
  .subpage-hero h1 {
    font-size: 1.8rem;
  }
}