.about-hero {
  position: relative;
  color: #ffffff;
  background-image: url("../images/hero-protective-coating.jpg");
  background-position: center;
  background-size: cover;
}

.about-hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background: rgba(21, 24, 29, 0.72);
}

.about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  align-items: end;
  min-height: 430px;
  gap: 46px;
  padding: 58px 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 38px;
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.88rem;
  font-weight: 700;
}

.breadcrumb a {
  color: #ffffff;
}

.breadcrumb span::before {
  content: "/";
  margin-right: 10px;
  color: rgba(255, 255, 255, 0.42);
}

.about-hero .section-eyebrow {
  color: var(--color-warning);
}

.about-hero h1 {
  margin: 0;
  font-size: clamp(2.6rem, 5vw, 5.2rem);
  line-height: 0.98;
}

.about-hero p:not(.section-eyebrow) {
  max-width: 760px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(1rem, 1.7vw, 1.22rem);
}

.about-hero__summary {
  padding: 26px;
  background: rgba(255, 255, 255, 0.94);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.about-hero__summary span {
  display: block;
  margin-bottom: 12px;
  color: var(--color-accent);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.about-hero__summary strong {
  display: block;
  color: var(--color-ink);
  font-size: 1.32rem;
  line-height: 1.24;
}

.mission-section {
  background: #ffffff;
}

.mission-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 52px;
}

.mission-intro {
  position: sticky;
  top: 140px;
  align-self: start;
}

.mission-intro h2,
.capability-copy h2,
.quality-panel h2,
.association-layout h2,
.about-cta h2 {
  margin: 0;
  color: var(--color-ink);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
}

.mission-intro p:not(.section-eyebrow),
.mission-content p,
.capability-copy p,
.quality-copy p,
.association-layout p,
.about-cta p {
  margin: 16px 0 0;
  color: var(--color-muted);
}

.mission-content {
  display: grid;
  gap: 18px;
  padding-left: 28px;
  border-left: 4px solid var(--color-accent);
}

.mission-content p {
  margin-top: 0;
  font-size: 1.04rem;
}

.credibility-section {
  background: var(--color-surface-soft);
}

.credibility-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.credibility-grid article {
  min-height: 244px;
  padding: 26px;
  background: #ffffff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.credibility-grid span {
  color: var(--color-accent);
  font-size: 0.82rem;
  font-weight: 800;
}

.credibility-grid h3 {
  margin: 54px 0 12px;
  font-size: 1.25rem;
  line-height: 1.18;
}

.credibility-grid p {
  margin: 0;
  color: var(--color-muted);
}

.capability-section {
  background: #ffffff;
}

.capability-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.68fr);
  align-items: start;
  gap: 46px;
}

.capability-list {
  display: grid;
  gap: 10px;
  padding: 24px;
  background: var(--color-surface-soft);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.capability-list a {
  padding: 14px 0;
  color: var(--color-ink-soft);
  font-weight: 800;
  border-top: 1px solid var(--color-line);
}

.capability-list a:first-child {
  border-top: 0;
}

.capability-list a:hover,
.capability-list a:focus {
  color: var(--color-accent);
}

.quality-section {
  color: #ffffff;
  background: var(--color-surface-strong);
}

.quality-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 46px;
}

.quality-panel {
  padding: 30px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
}

.quality-panel h2 {
  color: #ffffff;
}

.quality-section .section-eyebrow {
  color: var(--color-warning);
}

.quality-copy p {
  color: rgba(255, 255, 255, 0.74);
}

.association-section {
  background: #ffffff;
}

.association-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1fr);
  align-items: center;
  gap: 46px;
}

.association-logos {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.association-logos img {
  width: 100%;
  aspect-ratio: 1 / 0.72;
  object-fit: contain;
  padding: 14px;
  background: var(--color-surface-soft);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.about-cta-section {
  background: var(--color-surface-soft);
}

.about-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  padding: 42px;
  background: #ffffff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: 0 12px 30px rgba(21, 24, 29, 0.07);
}

.credibility-grid article.is-observed,
.association-logos img.is-observed {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 420ms ease, transform 420ms ease;
}

.credibility-grid article.is-visible,
.association-logos img.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .about-hero__inner,
  .mission-layout,
  .capability-layout,
  .quality-layout,
  .association-layout,
  .about-cta {
    grid-template-columns: 1fr;
  }

  .mission-intro {
    position: static;
  }

  .credibility-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .about-hero__inner {
    min-height: auto;
    padding: 46px 0;
  }

  .breadcrumb {
    margin-bottom: 28px;
  }

  .mission-content {
    padding-left: 18px;
  }

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

  .about-cta {
    padding: 24px;
  }

  .about-cta .button {
    width: 100%;
  }
}