/* ==========================================================================
   BAOMING VALVE (宝明阀门) - BRAND DESIGN SYSTEM & STYLESHEET
   Colors extracted from Baoming English Logo: Deep Industrial Blue, Navy, Cyan
   ========================================================================== */

:root {
  --primary: #005691;
  --primary-dark: #0B192C;
  --primary-deep: #051629;
  --primary-light: #0072CE;
  --accent-cyan: #00A8E8;
  --accent-gold: #F59E0B;
  --accent-red: #E11D48;

  --bg-dark: #07111E;
  --bg-light: #F8FAFC;
  --bg-card: #FFFFFF;
  --border-color: #E2E8F0;
  --border-dark: #1E293B;

  --text-dark: #0F172A;
  --text-muted: #64748B;
  --text-light: #F1F5F9;
  --text-white: #FFFFFF;

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 16px -2px rgba(0, 86, 145, 0.08), 0 4px 6px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 20px 25px -5px rgba(11, 25, 44, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 25px rgba(0, 168, 232, 0.3);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  scroll-behavior: smooth;
  color: var(--text-dark);
  background-color: var(--bg-light);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, select, textarea {
  font: inherit;
  outline: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Top Announcement Bar --- */
.top-bar {
  background-color: var(--primary-deep);
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.top-contacts {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.top-contacts a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: #94A3B8;
}

.top-contacts a:hover {
  color: var(--accent-cyan);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.lang-picker {
  position: relative;
}

.lang-btn {
  color: #94A3B8;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.85rem;
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--primary-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  display: none;
  min-width: 130px;
  z-index: 1000;
  padding: 0.4rem 0;
}

.lang-picker:hover .lang-dropdown {
  display: block;
}

.lang-dropdown a {
  display: block;
  padding: 0.4rem 1rem;
  color: var(--text-light);
  font-size: 0.8rem;
}

.lang-dropdown a:hover {
  background: var(--primary);
  color: var(--text-white);
}

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-links a {
  color: #94A3B8;
  font-size: 0.9rem;
}

.social-links a:hover {
  color: var(--accent-cyan);
}

/* --- Header & Navigation --- */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  z-index: 900;
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.site-header .brand-logo {
  height: 100%;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
}

.brand-logo img {
  height: 48px;
  max-height: 52px;
  width: auto;
  object-fit: contain;
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-item {
  position: relative;
  padding: 1.5rem 0;
}

.nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-dark);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.nav-link:hover, .nav-item.active .nav-link {
  color: var(--primary);
}

/* Mega Menu Dropdown */
.mega-dropdown {
  position: absolute;
  top: 100%;
  left: -100px;
  width: 760px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 1000;
}

.nav-item:hover .mega-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-column h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  margin-bottom: 0.75rem;
  border-bottom: 2px solid var(--primary-light);
  padding-bottom: 0.3rem;
}

.dropdown-column ul li {
  margin-bottom: 0.5rem;
}

.dropdown-column ul li a {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.dropdown-column ul li a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.tool-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  background: #F1F5F9;
  color: var(--text-dark);
  position: relative;
  transition: var(--transition);
}

.tool-btn:hover {
  background: var(--primary);
  color: var(--text-white);
}

.badge-count {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--accent-red);
  color: var(--text-white);
  font-size: 0.7rem;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--text-white);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 86, 145, 0.3);
  color: var(--text-white);
}

.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.btn-outline:hover {
  background: var(--primary);
  color: var(--text-white);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--text-dark);
}

/* --- Hero Carousel & Section --- */
.hero-slider {
  position: relative;
  background: var(--primary-dark);
  color: var(--text-white);
  overflow: hidden;
  min-height: 580px;
  display: flex;
  align-items: center;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s ease-in-out;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
}

.hero-slide.active {
  opacity: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7, 17, 30, 0.92) 0%, rgba(7, 17, 30, 0.65) 50%, rgba(7, 17, 30, 0.3) 100%);
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 680px;
  padding: 4rem 0;
}

.hero-tag {
  display: inline-block;
  background: rgba(0, 168, 232, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 168, 232, 0.4);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  color: #FFFFFF;
}

.hero-desc {
  font-size: 1.15rem;
  color: #CBD5E1;
  margin-bottom: 2rem;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.slider-dots {
  position: absolute;
  bottom: 25px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.6rem;
  z-index: 20;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: var(--transition);
}

.dot.active {
  background: var(--accent-cyan);
  width: 32px;
  border-radius: var(--radius-full);
}

/* --- Stats Highlights Bar --- */
.stats-bar {
  background: var(--primary-deep);
  color: var(--text-white);
  padding: 2.5rem 0;
  border-bottom: 4px solid var(--primary-light);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-item {
  padding: 1rem;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item:last-child {
  border-right: none;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-cyan);
  margin-bottom: 0.2rem;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.95rem;
  color: #94A3B8;
  font-weight: 500;
}

/* --- Section Formatting --- */
.section {
  padding: 5rem 0;
}

.section-dark {
  background-color: var(--primary-dark);
  color: var(--text-white);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem;
}

.section-subtitle {
  color: var(--primary);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.section-dark .section-subtitle {
  color: var(--accent-cyan);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.section-dark .section-title {
  color: var(--text-white);
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.section-dark .section-desc {
  color: #94A3B8;
}

/* --- Product Categories & Grid --- */
.category-tabs {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.tab-btn {
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.tab-btn:hover, .tab-btn.active {
  background: var(--primary);
  color: var(--text-white);
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(0, 86, 145, 0.2);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}

.product-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

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

.product-thumb {
  position: relative;
  padding-top: 85%;
  background: #F8FAFC;
  overflow: hidden;
}

.product-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 1.25rem;
  transition: transform 0.5s ease;
}

.product-card:hover .product-thumb img {
  transform: scale(1.08);
}

.product-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0, 86, 145, 0.9);
  color: var(--text-white);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
}

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

.product-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.product-title a:hover {
  color: var(--primary);
}

.product-specs {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  flex-grow: 1;
}

.spec-line {
  display: flex;
  justify-content: space-between;
  padding: 0.2rem 0;
  border-bottom: 1px dashed #F1F5F9;
}

.spec-line span:last-child {
  font-weight: 600;
  color: var(--text-dark);
}

.product-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.btn-card-quote {
  flex: 1;
  background: var(--bg-light);
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  text-align: center;
  transition: var(--transition);
}

.btn-card-quote:hover {
  background: var(--primary);
  color: var(--text-white);
}

/* --- About & Factory Feature --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-images {
  position: relative;
}

.about-main-img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.about-badge-card {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--primary-dark);
  color: var(--text-white);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--accent-cyan);
  max-width: 240px;
}

.about-badge-card strong {
  font-size: 1.75rem;
  color: var(--accent-cyan);
  display: block;
}

.feature-list {
  margin: 1.5rem 0 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--text-dark);
  font-weight: 600;
}

.feature-item i {
  color: var(--primary);
  margin-top: 4px;
}

/* --- Quality Control & Lab Grid --- */
.lab-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.lab-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.lab-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.lab-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: rgba(0, 86, 145, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.lab-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: var(--text-dark);
}

.lab-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --- Articles & Blog Grid --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.blog-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.blog-thumb {
  height: 200px;
  overflow: hidden;
}

.blog-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.blog-card:hover .blog-thumb img {
  transform: scale(1.05);
}

.blog-body {
  padding: 1.5rem;
}

.blog-date {
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.blog-title {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.75rem;
}

.blog-title a:hover {
  color: var(--primary);
}

.blog-summary {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --- Interactive RFQ Drawer & Cart Modal --- */
.rfq-drawer {
  position: fixed;
  top: 0;
  right: -420px;
  width: 400px;
  height: 100vh;
  background: var(--bg-card);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
  z-index: 2000;
  transition: right 0.4s ease;
  display: flex;
  flex-direction: column;
}

.rfq-drawer.open {
  right: 0;
}

.drawer-header {
  background: var(--primary-dark);
  color: var(--text-white);
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.drawer-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.close-drawer {
  color: var(--text-white);
  font-size: 1.25rem;
}

.drawer-body {
  padding: 1.5rem;
  flex-grow: 1;
  overflow-y: auto;
}

.cart-item {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
  align-items: center;
}

.cart-item img {
  width: 60px;
  height: 60px;
  object-fit: contain;
  background: #F8FAFC;
  border-radius: var(--radius-sm);
  padding: 4px;
}

.cart-item-info {
  flex-grow: 1;
}

.cart-item-title {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.cart-item-spec {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.remove-cart-item {
  color: var(--accent-red);
  font-size: 0.9rem;
}

.drawer-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--border-color);
  background: var(--bg-light);
}

.rfq-form input, .rfq-form textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  margin-bottom: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

/* --- Search Modal Overlay --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(7, 17, 30, 0.75);
  backdrop-filter: blur(6px);
  z-index: 2500;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 100px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.search-box-modal {
  width: 100%;
  max-width: 640px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 1.5rem;
}

.search-input-wrap {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.search-input-wrap input {
  flex-grow: 1;
  padding: 0.85rem 1.25rem;
  border: 2px solid var(--primary-light);
  border-radius: var(--radius-md);
  font-size: 1rem;
}

.search-results-list {
  max-height: 360px;
  overflow-y: auto;
}

/* --- Responsive Sitemap Pill --- */
.sitemap-pill-bar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(11, 25, 44, 0.92);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  padding: 0.5rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  box-shadow: var(--shadow-lg);
  z-index: 850;
  color: var(--text-white);
  font-size: 0.85rem;
}

.sitemap-pill-bar a {
  color: #CBD5E1;
  font-weight: 500;
}

.sitemap-pill-bar a:hover {
  color: var(--accent-cyan);
}

.sitemap-badge {
  background: var(--primary);
  color: var(--text-white);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

/* --- Footer --- */
.site-footer {
  background: var(--primary-dark);
  color: #94A3B8;
  padding: 4.5rem 0 2rem;
  border-top: 1px solid var(--border-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  align-items: start;
  margin-bottom: 2.5rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-brand .brand-logo {
  height: auto;
  margin-bottom: 1.25rem;
}

.footer-brand img {
  height: 46px;
  width: auto;
  object-fit: contain;
  display: block;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1.25rem;
  color: #CBD5E1;
}

.footer-col h4 {
  color: var(--text-white);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 36px;
  height: 3px;
  background: var(--primary-light);
}

.footer-col ul li {
  margin-bottom: 0.65rem;
}

.footer-col ul li a {
  color: #94A3B8;
  font-size: 0.9rem;
}

.footer-col ul li a:hover {
  color: var(--accent-cyan);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.75rem 0 3.5rem;
  text-align: center;
  font-size: 0.85rem;
}

/* --- Responsive Media Queries --- */
@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .mega-dropdown {
    width: 600px;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
  }
  .main-nav {
    display: none;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-grid, .lab-grid, .blog-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2rem;
  }
  .sitemap-pill-bar {
    display: none;
  }
}

@media (max-width: 480px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
}