/* ==========================================================================
   Component System Styles
   Huayi Medical Technology × MENGROU CARE
   Phase 3.1 Hardened & Accessible
   ========================================================================== */

/* --------------------------------------------------------------------------
   01 Header, Topbar & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.top-bar {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border-subtle);
  font-size: var(--font-size-caption);
  padding: 0.5rem 0;
  color: var(--color-text-secondary);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.main-nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Brand Architecture */
.brand-identity {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo-img {
  height: 42px;
  width: auto;
}

.brand-divider {
  width: 1px;
  height: 28px;
  background-color: var(--color-border);
}

.brand-text-group {
  display: flex;
  flex-direction: column;
}

.company-title {
  font-size: 0.95rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-primary);
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

/* Navigation Links */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  padding: 0.65rem 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  border-radius: var(--radius-sm);
  min-height: 44px;
}

.nav-link:hover, .nav-link.active, .nav-link:focus-visible {
  color: var(--color-brand-secondary);
}

.nav-link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

/* Accessible Mega Menu */
.mega-dropdown {
  position: absolute;
  top: 100%;
  left: -120px;
  width: 680px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 1.5rem;
  display: none;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  z-index: 100;
}

/* Open state either by class or focus within */
.nav-item.has-mega:hover .mega-dropdown,
.nav-item.has-mega.open .mega-dropdown,
.nav-item.has-mega:focus-within .mega-dropdown {
  display: grid;
}

.nav-item.has-mega.open .nav-link svg,
.nav-item.has-mega:hover .nav-link svg {
  transform: rotate(180deg);
}

.mega-col-title {
  font-size: 0.875rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-primary);
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border-subtle);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.mega-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding-left: 0;
}

.mega-item a {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  display: block;
  padding: 0.35rem 0.25rem;
  border-radius: var(--radius-sm);
}

.mega-item a:hover, .mega-item a:focus-visible {
  color: var(--color-brand-secondary);
  background-color: var(--color-bg-secondary);
}

/* Language Switcher (WCAG Compliant Badges) */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8125rem;
  font-weight: var(--font-weight-semibold);
}

.lang-btn {
  background: none;
  border: 1px solid var(--color-border);
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  cursor: pointer;
  min-height: 36px;
  min-width: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.lang-btn.active {
  background-color: var(--color-brand-primary);
  color: #FFFFFF;
  border-color: var(--color-brand-primary);
}

.lang-btn:hover:not(.active) {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-border-focus);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  padding: 0.5rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
}

/* --------------------------------------------------------------------------
   02 Buttons & CTAs
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: var(--font-weight-semibold);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  min-height: 44px; /* Standard Accessible Touch Target */
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-brand-primary);
  color: #FFFFFF;
}

.btn-primary:hover, .btn-primary:focus-visible {
  background-color: var(--color-brand-primary-hover);
  color: #FFFFFF;
}

.btn-secondary {
  background-color: var(--color-bg-primary);
  color: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
}

.btn-secondary:hover, .btn-secondary:focus-visible {
  background-color: var(--color-bg-secondary);
  color: var(--color-brand-primary-hover);
}

.btn-accent {
  background-color: var(--color-care-accent);
  color: #FFFFFF;
}

.btn-accent:hover, .btn-accent:focus-visible {
  background-color: #9A3412;
  color: #FFFFFF;
}

/* Desktop Compact Control vs Mobile Touch Target */
.btn-sm {
  font-size: 0.875rem;
  padding: 0.45rem 1rem;
  min-height: 38px;
}

.btn-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   03 Responsive Semantic Grid System
   -------------------------------------------------------------------------- */
/* Hero Grid */
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
}

/* Product Hero Grid */
.product-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

/* Archive Layout */
.archive-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2rem;
  align-items: start;
}

/* Two Column Section */
.two-column-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

/* Card Grids */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.card-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* --------------------------------------------------------------------------
   04 Cards: Product, Scenario, Solution, Article
   -------------------------------------------------------------------------- */
.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-product);
  border-color: var(--color-brand-secondary);
}

.product-card-img-wrap {
  position: relative;
  background: radial-gradient(circle at center, #FFFFFF 40%, var(--color-bg-secondary) 100%);
  padding: 2rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 270px; /* Scaled up ~25% from 220px */
}

.product-card-img-wrap img {
  max-height: 230px; /* Scaled up ~28% from 180px */
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 6px 12px rgba(15, 23, 42, 0.08));
  transition: transform var(--transition-normal);
}

.product-card:hover .product-card-img-wrap img {
  transform: scale(1.05);
}

.product-card-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--color-brand-primary);
  color: #FFFFFF;
  font-size: 0.8125rem;
  font-weight: var(--font-weight-semibold);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
}

.product-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-card-title {
  font-size: 1.2rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: 0.4rem;
  color: var(--color-text-primary);
}

.product-card-spec-summary {
  font-size: 0.925rem;
  color: var(--color-brand-secondary);
  font-weight: var(--font-weight-semibold);
  margin-bottom: 0.6rem;
}

.product-card-desc {
  font-size: 0.925rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.product-card-features {
  list-style: none;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding-left: 0;
}

.product-card-footer {
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 1.1rem;
  margin-top: auto;
}

/* Solution SKU Showcase Card */
.bundle-showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.bundle-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.bundle-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-product);
  border-color: var(--color-brand-secondary);
}

.bundle-card-img-wrap {
  background: radial-gradient(circle at center, #FFFFFF 40%, var(--color-bg-tertiary) 100%);
  padding: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
}

.bundle-card-img-wrap img {
  max-height: 180px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 6px 12px rgba(15, 23, 42, 0.08));
}

.bundle-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.bundle-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  color: var(--color-brand-primary);
  background: var(--color-bg-secondary);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  width: fit-content;
}

/* Brand Wave Motif Container */
.brand-wave-bg {
  background: linear-gradient(135deg, #F8FAFC 0%, #FFFFFF 50%, #F1F5F9 100%);
  position: relative;
}

/* Scenario & Solution Cards */
.scenario-card, .solution-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
}

.scenario-card:hover, .solution-card:hover {
  border-color: var(--color-brand-secondary);
  box-shadow: var(--shadow-md);
}

.card-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--color-bg-secondary);
  color: var(--color-brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.scenario-card-title, .solution-card-title {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

/* Article Card */
.article-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
}

.article-card:hover {
  border-color: var(--color-brand-secondary);
  box-shadow: var(--shadow-sm);
}

.article-card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.article-card-title {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.article-card-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  flex-grow: 1;
  margin-bottom: 1rem;
}

/* --------------------------------------------------------------------------
   05 Tables: Specification & Size Table
   -------------------------------------------------------------------------- */
.table-responsive-wrapper {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  margin-bottom: 1.5rem;
}

.spec-table, .size-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.spec-table th, .size-table th {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.spec-table td, .size-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-text-secondary);
}

.spec-table tr:last-child td, .size-table tr:last-child td {
  border-bottom: none;
}

.spec-table tr:hover, .size-table tr:hover {
  background-color: var(--color-bg-secondary);
}

/* --------------------------------------------------------------------------
   06 FAQ Accordion
   -------------------------------------------------------------------------- */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 1rem 1.25rem;
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  min-height: 48px;
}

.faq-question:hover, .faq-question:focus-visible {
  color: var(--color-brand-secondary);
  background-color: var(--color-bg-secondary);
}

.faq-icon {
  transition: transform var(--transition-fast);
  color: var(--color-text-muted);
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.25rem 1rem 1.25rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: none;
}

.faq-item.open .faq-answer {
  display: block;
}

/* --------------------------------------------------------------------------
   07 Forms: Lead & Inquiry
   -------------------------------------------------------------------------- */
.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group.col-span-2 {
  grid-column: span 2;
}

.form-label {
  font-size: 0.875rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  display: block;
}

.form-label .required {
  color: var(--color-error);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 0.95rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  min-height: 44px;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-border-focus);
  outline: none;
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-helper {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.form-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  min-height: 44px;
}

.form-checkbox-label input[type="checkbox"] {
  margin-top: 0.25rem;
  width: 18px;
  height: 18px;
}

/* --------------------------------------------------------------------------
   08 Filter Drawer & Mobile Filters
   -------------------------------------------------------------------------- */
.mobile-filter-toggle {
  display: none;
  width: 100%;
  margin-bottom: 1rem;
}

.filter-sidebar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

/* Filter Checkbox styling for touch accessibility */
.filter-group-list label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  padding: 0.35rem 0;
  cursor: pointer;
  min-height: 36px;
}

.filter-group-list label:hover {
  color: var(--color-brand-secondary);
}

.filter-group-list input[type="checkbox"] {
  width: 16px;
  height: 16px;
}

/* --------------------------------------------------------------------------
   09 Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: #0F172A;
  color: #CBD5E1;
  padding-top: var(--space-12);
  padding-bottom: var(--space-8);
  border-top: 1px solid #1E293B;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: var(--space-10);
}

.footer-brand-title {
  color: #FFFFFF;
  font-size: 1.15rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: 0.5rem;
}

.footer-brand-desc {
  font-size: 0.875rem;
  line-height: 1.6;
  max-width: 320px;
  margin-bottom: 1rem;
  color: #94A3B8;
}

.footer-col-title {
  color: #FFFFFF;
  font-size: 0.95rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.875rem;
  padding-left: 0;
}

.footer-links a {
  color: #CBD5E1;
  display: inline-block;
  padding: 0.25rem 0;
}

.footer-links a:hover, .footer-links a:focus-visible {
  color: #FFFFFF;
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid #1E293B;
  padding-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8125rem;
  color: #94A3B8;
}

.footer-bottom a {
  color: #94A3B8;
}

.footer-bottom a:hover, .footer-bottom a:focus-visible {
  color: #FFFFFF;
}

/* --------------------------------------------------------------------------
   10 Breadcrumb
   -------------------------------------------------------------------------- */
.breadcrumb-nav {
  padding: 1rem 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding-left: 0;
}

.breadcrumb-item a {
  color: var(--color-text-secondary);
}

.breadcrumb-item a:hover, .breadcrumb-item a:focus-visible {
  color: var(--color-brand-secondary);
}

.breadcrumb-separator {
  color: var(--color-text-muted);
}

.breadcrumb-item.active {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

.contact-info-grid, .process-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.usage-tips-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.company-phone-link:hover, .company-email-link:hover {
  text-decoration: underline !important;
  color: var(--color-brand-secondary) !important;
}

/* --------------------------------------------------------------------------
   11 Responsive Reflow Rules
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .contact-info-grid, .process-steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-grid, .product-hero-grid, .two-column-section {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .archive-layout {
    grid-template-columns: 220px 1fr;
    gap: 1.5rem;
  }
  .card-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .card-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .mega-dropdown {
    left: 0;
    width: 100%;
    max-width: 600px;
  }
}

@media (max-width: 768px) {
  /* Navigation Mobile Reflow */
  .nav-menu {
    display: none;
  }
  .mobile-toggle {
    display: inline-flex;
  }
  .top-bar-inner {
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
  }

  /* Semantic Layout Grids Reflow to Single Column */
  .hero-grid, .product-hero-grid, .two-column-section {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .archive-layout {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .card-grid, .card-grid-3, .card-grid-4, .contact-info-grid, .process-steps-grid, .usage-tips-grid {
    grid-template-columns: 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-group.col-span-2 {
    grid-column: span 1;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Mobile Touch Targets Enforced */
  .btn-sm {
    min-height: 44px;
    padding: 0.6rem 1.25rem;
  }

  /* Mobile Archive Filter Drawer */
  .mobile-filter-toggle {
    display: flex;
  }
  .filter-sidebar {
    display: none; /* Toggled by mobile-filter-toggle */
  }
  .filter-sidebar.open {
    display: block;
    margin-bottom: 1.5rem;
  }

  /* Specification Table Reflow to Stacked Key-Value Rows on Mobile */
  .table-responsive-wrapper.mobile-stack {
    border: none;
    background: transparent;
  }
  .table-responsive-wrapper.mobile-stack .spec-table,
  .table-responsive-wrapper.mobile-stack .spec-table thead,
  .table-responsive-wrapper.mobile-stack .spec-table tbody,
  .table-responsive-wrapper.mobile-stack .spec-table th,
  .table-responsive-wrapper.mobile-stack .spec-table td,
  .table-responsive-wrapper.mobile-stack .spec-table tr {
    display: block;
  }
  .table-responsive-wrapper.mobile-stack .spec-table thead tr {
    position: absolute;
    top: -9999px;
    left: -9999px;
  }
  .table-responsive-wrapper.mobile-stack .spec-table tr {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    margin-bottom: 0.75rem;
  }
  .table-responsive-wrapper.mobile-stack .spec-table td {
    border: none;
    border-bottom: 1px dashed var(--color-border-subtle);
    position: relative;
    padding: 0.5rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
  }
  .table-responsive-wrapper.mobile-stack .spec-table td:last-child {
    border-bottom: none;
  }
  .table-responsive-wrapper.mobile-stack .spec-table td::before {
    content: attr(data-label);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    text-align: left;
    margin-right: 0.5rem;
  }
}

/* Home Hero and Solution Hero specific desktop grid ratios */
.home-hero-grid {
  grid-template-columns: 1.15fr 1fr;
  gap: 4rem;
  align-items: center;
}

.solution-hero-grid {
  grid-template-columns: 1.15fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.home-hero-visual {
  position: relative;
}

.home-hero-glow {
  position: absolute;
  width: 440px;
  height: 440px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(42, 127, 157, 0.12) 0%, rgba(212, 122, 70, 0.06) 70%, transparent 100%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  pointer-events: none;
}

.home-hero-card {
  position: relative;
  z-index: 2;
  background: #FFFFFF;
  padding: 2.5rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-product);
  text-align: center;
}

.home-hero-card img {
  max-height: 400px;
  width: auto;
  margin: 1rem auto 1.5rem auto;
  object-fit: contain;
  filter: drop-shadow(0 12px 24px rgba(15, 23, 42, 0.12));
}

@media (max-width: 768px) {
  .home-hero-grid, .solution-hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Mobile Home Hero Product Visual Container: independent block, centered, no overlap */
  .home-hero-visual {
    width: 100%;
    margin-top: 1.5rem;
    position: relative;
    left: 0;
    transform: none;
  }

  .home-hero-glow {
    width: 280px;
    height: 280px;
  }

  .home-hero-card {
    padding: 1.5rem 1rem;
    width: 100%;
    box-sizing: border-box;
  }

  .home-hero-card img {
    max-height: 240px;
    max-width: 100%;
    margin: 0.75rem auto 1rem auto;
    display: block;
  }
}

/* --------------------------------------------------------------------------
   Product Single Hero Responsive Layout
   -------------------------------------------------------------------------- */
.product-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.product-stage-box {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.product-stage-box img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

@media (max-width: 768px) {
  .product-hero-grid {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }
  .product-stage-box {
    min-height: 260px !important;
    padding: 1.5rem !important;
  }
}

/* --------------------------------------------------------------------------
   Homepage Compact Product Grid (Strict 2-Col Mobile & Multi-Col Desktop)
   -------------------------------------------------------------------------- */
.home-products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.home-product-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  box-sizing: border-box;
}

.home-product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md, 0 10px 15px -3px rgba(0, 0, 0, 0.08));
  border-color: var(--color-brand-primary);
}

.home-product-card-img-wrap {
  aspect-ratio: 4/3;
  width: 100%;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  text-decoration: none;
}

.home-product-card-img-wrap img {
  max-width: 85%;
  max-height: 85%;
  object-fit: contain;
  transition: transform 0.25s ease;
}

.home-product-card:hover .home-product-card-img-wrap img {
  transform: scale(1.04);
}

.home-product-card-body {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.home-product-card-title {
  margin: 0 0 0.5rem 0;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-brand-primary);
}

.home-product-card-title a {
  color: inherit;
  text-decoration: none;
}

.home-product-card-title a:hover {
  color: var(--color-care-accent);
}

.home-product-card-desc {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
  margin: 0 0 1rem 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.35em;
}

.home-product-card-footer {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.home-product-card-btn {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-brand-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: color 0.15s ease;
}

.home-product-card-btn:hover {
  color: var(--color-care-accent);
}

/* Tablet: 3 columns */
@media (max-width: 1024px) {
  .home-products-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
}

/* Mobile (360px - 767px): STRICT 2-COLUMN COMPACT GRID */
@media (max-width: 767px) {
  .home-products-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.75rem !important;
  }

  .home-product-card {
    padding: 0.75rem !important;
  }

  .home-product-card-img-wrap {
    aspect-ratio: 1 / 1 !important;
    height: 140px !important;
    margin-bottom: 0.625rem !important;
  }

  .home-product-card-img-wrap img {
    max-width: 90% !important;
    max-height: 90% !important;
  }

  .home-product-card-title {
    font-size: 0.875rem !important;
    margin-bottom: 0.35rem !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
  }

  .home-product-card-desc {
    font-size: 0.75rem !important;
    line-height: 1.35 !important;
    margin-bottom: 0.625rem !important;
    -webkit-line-clamp: 2 !important;
    min-height: 2.7em !important;
  }

  .home-product-card-footer {
    padding-top: 0.5rem !important;
  }

  .home-product-card-btn {
    font-size: 0.75rem !important;
  }
}

/* Extremely narrow screen (< 340px) */
@media (max-width: 339px) {
  .home-products-grid {
    grid-template-columns: 1fr !important;
  }
}

/* --------------------------------------------------------------------------
   Knowledge Archive Visual Polish (Featured + 2-Column Secondary Grid)
   -------------------------------------------------------------------------- */
.knowledge-editorial-wrap {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.knowledge-featured-card {
  background: #f8fafc;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.knowledge-featured-card:hover {
  border-color: var(--color-brand-secondary);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
}

.knowledge-featured-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.featured-eyebrow {
  display: inline-block;
  background: var(--color-brand-primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.knowledge-meta-line {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.knowledge-featured-title {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.4;
  margin: 0 0 0.65rem 0;
}

.knowledge-featured-title a {
  color: var(--color-brand-primary);
  text-decoration: none;
}

.knowledge-featured-title a:hover {
  color: var(--color-brand-secondary);
}

.knowledge-featured-excerpt {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0 0 1rem 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.knowledge-featured-footer {
  display: flex;
  justify-content: flex-start;
}

/* Secondary cards (compressed 25-35% in height) */
.knowledge-secondary-grid {
  display: grid !important;
  grid-template-columns: repeat(2, 1fr) !important;
  gap: 1.25rem;
}

.knowledge-secondary-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.knowledge-secondary-card:hover {
  border-color: var(--color-brand-secondary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.knowledge-secondary-title {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.4;
  margin: 0.25rem 0 0.5rem 0;
}

.knowledge-secondary-title a {
  color: var(--color-brand-primary);
  text-decoration: none;
}

.knowledge-secondary-title a:hover {
  color: var(--color-brand-secondary);
}

.knowledge-secondary-excerpt {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin: 0 0 0.75rem 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.knowledge-secondary-footer {
  display: flex;
  justify-content: flex-end;
  padding-top: 0.5rem;
  border-top: 1px solid var(--color-border-subtle);
}

.knowledge-readmore-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-brand-secondary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.knowledge-readmore-link:hover {
  color: var(--color-brand-primary);
  text-decoration: underline;
}

@media (max-width: 768px) {
  .knowledge-secondary-grid {
    grid-template-columns: 1fr !important;
  }
  .knowledge-featured-card {
    padding: 1.25rem 1.25rem;
  }
  .knowledge-featured-title {
    font-size: 1.15rem;
  }
}

/* --------------------------------------------------------------------------
   Product Archive Unified Filter Panel
   Desktop >= 1200: 4-Column Grid (4 + 3)
   Tablet 992-1199: 3-Column Grid
   Tablet 768-991: 2-Column Grid
   Mobile <= 767: 2-Column Compact Grid
   -------------------------------------------------------------------------- */
.product-archive-container {
  width: 100%;
}

/* Unified Filter Card Container */
.product-filter-panel {
  background: var(--color-surface, #ffffff);
  border: 1px solid var(--color-border, #E2E8F0);
  border-radius: var(--radius-lg, 10px);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.filter-panel-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.35rem 0;
}

.filter-panel-row + .filter-panel-row {
  margin-top: 0.35rem;
}

.filter-row-label {
  width: 76px;
  flex-shrink: 0;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary, #475569);
  line-height: 32px;
  white-space: nowrap;
}

.filter-options-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  flex-grow: 1;
}

.filter-row-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  margin-left: auto;
  line-height: 32px;
}

/* Unified Filter Button (Shared across category, series, and scenarios) */
.filter-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  height: 32px;
  padding: 0 0.85rem;
  border-radius: var(--radius-sm, 6px);
  background: var(--color-surface, #ffffff);
  border: 1px solid var(--color-border, #CBD5E1);
  color: var(--color-text-secondary, #334155);
  font-size: 0.875rem;
  font-weight: 400;
  line-height: 1;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
  box-sizing: border-box;
}

.filter-btn:hover {
  border-color: var(--color-brand-primary, #0E7490);
  color: var(--color-brand-primary, #0E7490);
  background: rgba(14, 116, 144, 0.04);
}

.filter-btn.active {
  background: var(--color-brand-primary, #0E7490);
  border-color: var(--color-brand-primary, #0E7490);
  color: #ffffff;
  font-weight: 500;
}

.filter-btn .pill-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--color-bg-secondary, #F1F5F9);
  color: var(--color-text-muted, #64748B);
  transition: all 0.15s ease;
}

.filter-btn.active .pill-count {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

/* Toggle More Filters Action */
.btn-more-filters {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  height: 32px;
  padding: 0 0.75rem;
  border-radius: var(--radius-sm, 6px);
  background: var(--color-bg-secondary, #F8FAFC);
  border: 1px solid var(--color-border, #CBD5E1);
  color: var(--color-text-secondary, #475569);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  box-sizing: border-box;
}

.btn-more-filters:hover {
  border-color: var(--color-brand-primary, #0E7490);
  color: var(--color-brand-primary, #0E7490);
  background: #ffffff;
}

.btn-more-filters[aria-expanded="true"] {
  background: rgba(14, 116, 144, 0.08);
  border-color: var(--color-brand-primary, #0E7490);
  color: var(--color-brand-primary, #0E7490);
}

.btn-more-filters .caret-icon {
  display: inline-block;
  font-size: 0.75rem;
  transition: transform 0.2s ease;
}

.btn-more-filters[aria-expanded="true"] .caret-icon {
  transform: rotate(180deg);
}

.filter-reset-btn {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 0.5rem;
  background: none;
  border: none;
  color: var(--color-brand-secondary, #0891B2);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
}

.filter-reset-btn:hover {
  color: var(--color-brand-primary, #0E7490);
}

/* Collapsible Drawer (Inside same card) */
.advanced-filters-drawer {
  border-top: 1px solid var(--color-border-subtle, #F1F5F9);
  margin-top: 0.65rem;
  padding-top: 0.65rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  animation: fadeIn 0.2s ease;
}

/* 3. Products Status Header */
.archive-products-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border-subtle);
}

.archive-count-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.archive-verified-badge {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-brand-secondary);
}

/* 4. Desktop Grid >= 1200: 4 columns (4 + 3 = 7) */
.archive-products-grid {
  display: grid !important;
  grid-template-columns: repeat(4, 1fr) !important;
  gap: 1.25rem !important;
}

/* Product Card */
.product-archive-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  box-sizing: border-box;
}

.product-archive-card:hover {
  border-color: var(--color-brand-secondary);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.product-archive-img-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  height: 180px;
  overflow: hidden;
  padding: 0.75rem;
  box-sizing: border-box;
}

.product-archive-img-wrap img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.product-archive-card:hover .product-archive-img-wrap img {
  transform: scale(1.03);
}

.product-archive-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding-top: 0.875rem;
}

.product-archive-card-title {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 0.4rem 0;
  min-height: 2.7em;
}

.product-archive-card-title a {
  color: var(--color-brand-primary);
  text-decoration: none;
}

.product-archive-card-title a:hover {
  color: var(--color-brand-secondary);
}

.product-archive-card-desc {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
  margin: 0 0 0.75rem 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.9em;
  max-height: 2.9em;
}

.product-archive-card-footer {
  margin-top: auto;
  padding-top: 0.65rem;
  border-top: 1px solid var(--color-border-subtle);
}

.product-archive-card-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.4rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-brand-primary);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all 0.2s ease;
  box-sizing: border-box;
}

.product-archive-card-btn:hover {
  background: var(--color-brand-primary);
  color: #ffffff;
  border-color: var(--color-brand-primary);
}

.product-empty-notice {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Tablet 992-1199px: 3-Column Grid */
@media (max-width: 1199px) and (min-width: 992px) {
  .archive-products-grid {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 1.25rem !important;
  }
  .product-archive-img-wrap {
    height: 180px;
  }
}

/* Tablet 768 to 991px: 2-Column Grid */
@media (max-width: 991px) and (min-width: 768px) {
  .archive-products-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 1.25rem !important;
  }
  .product-archive-img-wrap {
    height: 180px;
  }
}

/* Mobile <= 767px (including 390px, 360px): 2-Column Compact Grid */
@media (max-width: 767px) {
  .product-filter-panel {
    padding: 0.75rem 0.875rem;
    margin-bottom: 1.25rem;
  }
  .filter-panel-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
  .filter-row-label {
    width: auto;
    font-size: 0.8125rem;
    line-height: 1.3;
  }
  .filter-options-wrap {
    width: 100%;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 0.35rem;
    -webkit-overflow-scrolling: touch;
  }
  .filter-btn {
    white-space: nowrap;
    height: 30px;
    font-size: 0.8125rem;
    padding: 0 0.65rem;
    flex-shrink: 0;
  }
  .filter-row-actions {
    margin-left: 0;
    width: 100%;
    justify-content: space-between;
    padding-top: 0.5rem;
    margin-top: 0.35rem;
    border-top: 1px dashed var(--color-border-subtle, #F1F5F9);
  }
  .btn-more-filters {
    height: 28px;
    font-size: 0.75rem;
    padding: 0 0.5rem;
  }
  .archive-products-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.75rem !important;
  }
  .product-archive-card {
    padding: 0.75rem;
    border-radius: var(--radius-md);
  }
  .product-archive-img-wrap {
    height: 135px; /* Mobile visual height 120-150px */
    padding: 0.5rem;
  }
  .product-archive-card-body {
    padding-top: 0.5rem;
  }
  .product-archive-card-title {
    font-size: 0.85rem;
    line-height: 1.3;
    margin-bottom: 0.25rem;
    min-height: 2.7em;
  }
  .product-archive-card-desc {
    font-size: 0.725rem;
    line-height: 1.35;
    margin-bottom: 0.5rem;
    min-height: 2.7em;
    max-height: 2.7em;
  }
  .product-archive-card-footer {
    padding-top: 0.5rem;
  }
  .product-archive-card-btn {
    font-size: 0.725rem;
    padding: 0.35rem 0.5rem;
  }
}

/* Extremely narrow (< 340px) */
@media (max-width: 339px) {
  .archive-products-grid {
    grid-template-columns: 1fr !important;
  }
}