.installation-hero {
  padding-top: var(--space-64);
}

.installation-breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-24);
}

.installation-breadcrumbs li + li::before {
  content: "/";
  margin: 0 var(--space-6);
  color: var(--color-neutral-400);
}

.installation-hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--space-32);
  align-items: center;
}

.installation-hero-text p {
  color: var(--color-text-muted);
}

.installation-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-16);
  margin-top: var(--space-24);
  margin-bottom: var(--space-24);
}

.installation-hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-24);
  font-size: var(--font-size-sm);
}

.installation-hero-metrics dt {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.installation-hero-metrics dd {
  font-weight: 600;
}

.installation-hero-figure figcaption {
  margin-top: var(--space-12);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.installation-section-header {
  max-width: 720px;
  margin-bottom: var(--space-32);
}

.installation-section-header p {
  color: var(--color-text-muted);
}

.installation-process-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: var(--space-32);
  align-items: flex-start;
}

.installation-step-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-20);
  list-style: none;
  padding: 0;
  margin: 0;
}

.installation-inline-link {
  font-size: var(--font-size-sm);
}

.installation-materials-grid,
.installation-expert-grid {
  row-gap: var(--space-24);
}

.installation-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.installation-list li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: var(--space-10);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.installation-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 6px;
  height: 6px;
  border-radius: 9999px;
  background-color: var(--color-neutral-400);
}

.installation-prep-grid,
.installation-aftercare-grid {
  gap: var(--space-32);
}

.installation-prep-callout h3,
.installation-aftercare-note h3 {
  margin-bottom: var(--space-16);
}

.installation-prep-cta,
.installation-aftercare-cta {
  margin-top: var(--space-20);
}

.installation-timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-24);
}

.installation-timeline-item .card-subtitle {
  font-size: var(--font-size-sm);
}

.installation-testimonials-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: var(--space-32);
  align-items: flex-start;
}

.installation-testimonials-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-20);
}

.installation-faq {
  max-width: 800px;
  margin: 0 auto;
}

.installation-faq-item {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-neutral-200);
  background-color: var(--color-surface);
  padding: var(--space-16) var(--space-20);
  box-shadow: var(--shadow-sm);
}

.installation-faq-item + .installation-faq-item {
  margin-top: var(--space-12);
}

.installation-faq-item summary {
  list-style: none;
  cursor: pointer;
  font-weight: 500;
}

.installation-faq-item summary::-webkit-details-marker {
  display: none;
}

.installation-faq-item summary::after {
  content: "+";
  float: right;
  font-weight: 600;
}

.installation-faq-item[open] summary::after {
  content: "–";
}

.installation-faq-body {
  margin-top: var(--space-12);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.installation-contact {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1.1fr);
  gap: var(--space-32);
  align-items: flex-start;
}

.installation-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-16);
  margin-top: var(--space-24);
}

.installation-contact-summary p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-12);
}

@media (max-width: 960px) {
  .installation-hero-layout,
  .installation-process-layout,
  .installation-testimonials-layout,
  .installation-contact {
    grid-template-columns: minmax(0, 1fr);
  }

  .installation-hero-media {
    order: -1;
  }

  .installation-hero-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 640px) {
  .installation-hero-metrics {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .installation-hero-actions,
  .installation-contact-actions {
    flex-direction: column;
    align-items: stretch;
  }
}