.nav-link.is-current {
  color: var(--color-brand-900);
  background: var(--color-brand-200);
}

.mobile-nav-link.is-current {
  background: var(--color-brand-200);
  border-color: var(--color-brand-200);
  color: var(--color-brand-900);
}

.piping-hero {
  padding: var(--space-7);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 700;
}

.crumb-link {
  color: var(--color-muted);
  text-decoration: none;
}

.crumb-link:hover {
  color: var(--color-brand-900);
  text-decoration: underline;
}

.crumb-sep {
  color: var(--color-muted);
}

.crumb-current {
  color: var(--color-brand-900);
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--color-brand-200);
  color: var(--color-brand-900);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-title {
  margin: 0;
  font-family: Fraunces, Georgia, serif;
  font-size: clamp(34px, 4vw, 56px);
  line-height: 1.08;
  color: var(--color-brand-900);
  max-width: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.72fr) minmax(300px, 0.95fr);
  gap: var(--space-5);
  align-items: start;
}

.hero-copy-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
}

.hero-copy {
  margin: 0;
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.85;
}

.hero-panel {
  padding: var(--space-5);
  box-shadow: none;
}

.hero-panel-title {
  margin: 0 0 var(--space-3) 0;
  color: var(--color-brand-900);
  font-size: 20px;
  font-weight: 900;
}

.hero-panel-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.hero-panel-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.hero-panel-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.hero-panel-label {
  color: var(--color-muted);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-panel-copy {
  color: var(--color-ink);
  font-size: 14px;
  line-height: 1.7;
  font-weight: 700;
}

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

.band-card {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: #ffffff;
}

.band-label {
  margin-bottom: var(--space-2);
  color: var(--color-brand-900);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.band-copy {
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.72;
  font-weight: 700;
}

.piping-section {
  padding-top: var(--space-6);
}

.layer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

.layer-card {
  padding: var(--space-5);
  box-shadow: none;
}

.layer-title {
  margin: 0 0 var(--space-2) 0;
  color: var(--color-brand-900);
  font-size: 20px;
  font-weight: 900;
  line-height: 1.3;
}

.layer-copy {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.8;
}

.dimension-board {
  display: grid;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #ffffff;
}

.dimension-row {
  display: grid;
  grid-template-columns: minmax(160px, 0.82fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
}

.dimension-head {
  background: var(--color-brand-200);
}

.dimension-row + .dimension-row {
  border-top: 1px solid var(--color-border);
}

.dimension-cell {
  padding: 18px 18px;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.72;
}

.dimension-cell + .dimension-cell {
  border-left: 1px solid var(--color-border);
}

.dimension-head .dimension-cell {
  color: var(--color-brand-900);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.dimension-label {
  color: var(--color-ink);
  font-weight: 800;
}

.join-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-4);
}

.join-card {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-brand-200);
  border: 1px solid var(--color-border);
}

.join-title {
  margin: 0 0 var(--space-2) 0;
  color: var(--color-brand-900);
  font-size: 16px;
  font-weight: 900;
  line-height: 1.3;
}

.join-copy {
  margin: 0;
  color: var(--color-ink);
  font-size: 14px;
  line-height: 1.74;
  font-weight: 700;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

.service-card {
  padding: var(--space-5);
  box-shadow: none;
}

.service-title {
  margin: 0 0 var(--space-2) 0;
  color: var(--color-brand-900);
  font-size: 19px;
  font-weight: 900;
  line-height: 1.3;
}

.service-copy {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.78;
}

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

.mistake-card {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: #ffffff;
}

.mistake-title {
  margin: 0 0 var(--space-2) 0;
  color: var(--color-brand-900);
  font-size: 17px;
  font-weight: 900;
  line-height: 1.3;
}

.mistake-copy {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.75;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

.related-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: #ffffff;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-soft);
}

.related-card:hover {
  border-color: var(--color-brand-900);
  transform: translateY(-1px);
}

.related-title {
  margin: 0;
  color: var(--color-ink);
  font-size: 19px;
  font-weight: 900;
  line-height: 1.3;
}

.related-text {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.75;
}

.footer-links-wrap {
  flex-wrap: wrap;
}

@media (max-width: 1280px) {
  .join-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 1120px) {
  .hero-grid,
  .layer-grid,
  .service-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 920px) {
  .dimension-board {
    overflow-x: auto;
  }

  .dimension-row {
    min-width: 980px;
  }
}

@media (max-width: 720px) {
  .piping-hero {
    padding: var(--space-6);
  }

  .hero-title {
    font-size: 34px;
    line-height: 1.12;
  }

  .hero-copy {
    font-size: 15px;
    line-height: 1.8;
  }

  .hero-band,
  .join-grid,
  .mistake-grid,
  .service-grid,
  .related-grid,
  .layer-grid {
    grid-template-columns: 1fr;
  }
}