/* ============================================
   PC STRAND — Subpage Styles
   ============================================ */

/* --- Product Section --- */
.strand-product {
  background: var(--color-white);
}

/* Featured product — horizontal card layout */
.strand-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--color-bg);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: var(--transition);
}

.strand-feature:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.strand-feature-img {
  position: relative;
  min-height: 480px;
  overflow: hidden;
}

.strand-feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.strand-feature:hover .strand-feature-img img {
  transform: scale(1.03);
}

.strand-feature-body {
  padding: 48px 52px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.strand-specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 36px;
}

.strand-spec-item {
  padding: 16px 20px;
  background: var(--color-white);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.strand-spec-item h4 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.strand-spec-item p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.55;
}

/* --- Advantages Section --- */
.strand-advantages {
  background: var(--color-bg);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.advantage-card {
  padding: 32px 28px;
  background: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.advantage-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.advantage-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(61, 90, 128, 0.06);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  margin-bottom: 20px;
}

.advantage-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 10px;
}

.advantage-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* --- Applications Section --- */
.strand-applications {
  background: var(--color-white);
}

.applications-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.application-card {
  padding: 36px 28px;
  background: var(--color-bg);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: var(--transition);
}

.application-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.application-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(61, 90, 128, 0.06);
  border-radius: 50%;
  color: var(--color-accent);
  margin: 0 auto 20px;
  transition: var(--transition);
}

.application-card:hover .application-icon {
  background: var(--color-accent);
  color: var(--color-white);
}

.application-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 10px;
}

.application-card p {
  font-size: 0.86rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .strand-feature {
    grid-template-columns: 1fr;
  }

  .strand-feature-img {
    min-height: 300px;
  }

  .strand-feature-body {
    padding: 36px 40px;
  }

  .advantages-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .applications-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}

@media (max-width: 768px) {
  .strand-feature-img {
    min-height: 240px;
  }

  .strand-feature-body {
    padding: 28px 28px 32px;
  }

  .strand-specs-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .advantages-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .advantage-card {
    padding: 24px 24px;
  }

  .applications-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .application-card {
    padding: 28px 24px;
  }
}

@media (max-width: 480px) {
  .strand-feature-img {
    min-height: 200px;
  }

  .strand-feature-body {
    padding: 24px 20px 28px;
  }

  .strand-spec-item {
    padding: 12px 16px;
  }
}