/* ========================================
   LEISHIDUN New Energy - Global Website
   Modern B2B Industrial Design
   ======================================== */

/* === CSS Variables === */
:root {
  --primary: #0A5CAB;
  --primary-dark: #084483;
  --primary-light: #2E8BDF;
  --primary-gradient: linear-gradient(135deg, #0A5CAB 0%, #1E7BC4 100%);
  --accent: #00B953;
  --accent-dark: #00A049;
  --dark: #1A2332;
  --dark-2: #2D3848;
  --gray-1: #F5F7FA;
  --gray-2: #E8ECF0;
  --gray-3: #C5CCD4;
  --gray-text: #6B7785;
  --text: #2D3848;
  --white: #FFFFFF;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 16px 60px rgba(0,0,0,0.16);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --container: 1200px;
  --header-h: 80px;
}

/* === Reset === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--white);
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* === Header === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.header.scrolled {
  height: 68px;
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
  font-weight: 900;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-text span {
  font-size: 0.65rem;
  color: var(--gray-text);
  font-weight: 500;
  letter-spacing: 1px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav a {
  padding: 10px 18px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--dark);
  border-radius: var(--radius-sm);
  position: relative;
}

.nav a:hover,
.nav a.active {
  color: var(--primary);
  background: rgba(10, 92, 171, 0.06);
}

.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-quote {
  background: var(--primary-gradient);
  color: white;
  padding: 11px 24px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.88rem;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-quote:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(10, 92, 171, 0.35);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--dark);
}

/* === Hero Section === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0A5CAB 0%, #1A3A5C 50%, #0D2240 100%);
  overflow: hidden;
  padding-top: var(--header-h);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('../images/banners/banner1.jpg') center/cover;
  opacity: 0.25;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(10,92,171,0.1) 0%, transparent 50%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.9);
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.hero-tag .dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  color: white;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.hero h1 .highlight {
  color: #4FC3F7;
  position: relative;
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  background: white;
  color: var(--primary);
  padding: 14px 36px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.95rem;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.25);
}

.btn-outline-white {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.3);
  padding: 12px 36px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.95rem;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-outline-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
}

.hero-stats {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 48px;
  margin-top: 60px;
  padding-top: 36px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.hero-stat {
  text-align: left;
}

.hero-stat .num {
  font-size: 2.2rem;
  font-weight: 800;
  color: white;
  line-height: 1;
}

.hero-stat .num span {
  font-size: 1rem;
  color: rgba(255,255,255,0.6);
  font-weight: 600;
}

.hero-stat .label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.6);
  margin-top: 6px;
}

/* === Section General === */
.section {
  padding: 80px 0;
}

.section-gray {
  background: var(--gray-1);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--dark);
  line-height: 1.25;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--gray-text);
  margin-top: 16px;
  line-height: 1.7;
}

/* === Stats Bar === */
.stats-bar {
  background: var(--primary-gradient);
  padding: 48px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item .num {
  font-size: 2.5rem;
  font-weight: 800;
  color: white;
  line-height: 1;
}

.stat-item .num span {
  font-size: 1.1rem;
}

.stat-item .label {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  margin-top: 8px;
}

/* === Products Section === */
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.product-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--gray-2);
}

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

.product-card-img {
  height: 240px;
  background: linear-gradient(135deg, #E3F0FC 0%, #D0E5F8 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-card-img .icon-large {
  font-size: 4rem;
  opacity: 0.3;
}

.product-card-body {
  padding: 28px;
}

.product-card-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.product-card-body .desc {
  font-size: 0.92rem;
  color: var(--gray-text);
  line-height: 1.6;
  margin-bottom: 16px;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.product-tag {
  background: var(--gray-1);
  color: var(--gray-text);
  padding: 5px 12px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
}

.product-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 700;
  font-size: 0.9rem;
  transition: gap var(--transition);
}

.product-card-link:hover {
  gap: 12px;
}

/* === About / Features Section === */
.about-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.about-image .badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: white;
  padding: 20px 28px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.about-image .badge .big {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.about-image .badge .small {
  font-size: 0.82rem;
  color: var(--gray-text);
  margin-top: 4px;
}

.about-content .section-tag {
  margin-bottom: 12px;
}

.about-content h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--dark);
  line-height: 1.25;
  margin-bottom: 20px;
}

.about-content p {
  font-size: 1rem;
  color: var(--gray-text);
  line-height: 1.8;
  margin-bottom: 16px;
}

.feature-list {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}

.feature-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(10, 92, 171, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.feature-item h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}

.feature-item p {
  font-size: 0.88rem;
  color: var(--gray-text);
  margin: 0;
  line-height: 1.5;
}

/* === Factory Section === */
.factory-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.factory-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 3/4;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all var(--transition);
}

.factory-item:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.factory-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}

.factory-item:hover img {
  transform: scale(1.08);
}

.factory-item .overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 100%);
  color: white;
}

.factory-item .overlay h4 {
  font-size: 0.95rem;
  font-weight: 700;
}

/* === Certifications === */
.cert-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.cert-item {
  background: white;
  border: 2px solid var(--gray-2);
  border-radius: var(--radius-md);
  padding: 24px 36px;
  text-align: center;
  transition: all var(--transition);
  min-width: 160px;
}

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

.cert-item .cert-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  margin: 0 auto 12px;
}

.cert-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dark);
}

.cert-item p {
  font-size: 0.78rem;
  color: var(--gray-text);
  margin-top: 4px;
}

/* === CTA Section === */
.cta-section {
  background: linear-gradient(135deg, #0A5CAB 0%, #084483 100%);
  padding: 72px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: rgba(255,255,255,0.03);
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: white;
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
}

/* === Footer === */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.6);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: white;
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 0.88rem;
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: var(--primary-light);
}

.footer-contact-item {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.88rem;
  align-items: flex-start;
}

.footer-contact-item .icon {
  color: var(--primary-light);
  margin-top: 2px;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
}

/* === Page Banner === */
.page-banner {
  background: linear-gradient(135deg, #0A5CAB 0%, #084483 100%);
  padding: 140px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('../images/banners/banner2.jpg') center/cover;
  opacity: 0.15;
}

.page-banner-content {
  position: relative;
  z-index: 1;
}

.page-banner h1 {
  font-size: 2.8rem;
  font-weight: 800;
  color: white;
  margin-bottom: 12px;
}

.page-banner p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
}

.breadcrumb {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 16px;
  font-size: 0.88rem;
}

.breadcrumb a {
  color: rgba(255,255,255,0.6);
}

.breadcrumb a:hover {
  color: white;
}

.breadcrumb span {
  color: rgba(255,255,255,0.4);
}

/* === About Page === */
.about-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.about-hero-text h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 20px;
  line-height: 1.25;
}

.about-hero-text p {
  font-size: 1rem;
  color: var(--gray-text);
  line-height: 1.8;
  margin-bottom: 16px;
}

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

.about-hero-img img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gray-2);
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -34px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid white;
  box-shadow: 0 0 0 2px var(--primary);
}

.timeline-item .year {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 8px;
}

.timeline-item h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}

.timeline-item p {
  font-size: 0.92rem;
  color: var(--gray-text);
  line-height: 1.6;
}

/* === Products Page === */
.product-category {
  margin-bottom: 48px;
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.product-category-header {
  background: var(--gray-1);
  padding: 24px 32px;
  border-bottom: 1px solid var(--gray-2);
}

.product-category-header h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 10px;
}

.product-category-header h3 .cat-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
}

.product-items-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 28px 32px;
}

.product-item {
  border: 1px solid var(--gray-2);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
}

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

.product-item-img {
  height: 160px;
  background: linear-gradient(135deg, #E3F0FC 0%, #D0E5F8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.product-item-img .product-icon {
  font-size: 3rem;
  opacity: 0.4;
}

.product-item-body {
  padding: 16px 20px;
}

.product-item-body h4 {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}

.product-item-body p {
  font-size: 0.82rem;
  color: var(--gray-text);
  line-height: 1.5;
}

/* Product photos */
.product-item-img {
  background: #fff;
  padding: 10px;
}
.product-item-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.product-item-img .product-photo {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Product model grid (catalog) */
.model-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 28px 32px;
}
.model-item {
  border: 1px solid var(--gray-2);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #fff;
  text-align: center;
  transition: all var(--transition);
}
.model-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.model-item-img {
  height: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  background: #fff;
}
.model-item-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.model-item-name {
  padding: 10px 8px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--dark);
  border-top: 1px solid var(--gray-2);
}

/* Series card (photo + text) */
.series-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 28px 32px;
}
.series-item {
  border: 1px solid var(--gray-2);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #fff;
  transition: all var(--transition);
}
.series-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.series-item-img {
  height: 150px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  border-bottom: 1px solid var(--gray-2);
}
.series-item-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.series-item-body {
  padding: 14px 16px;
}
.series-item-body h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}
.series-item-body p {
  font-size: 0.8rem;
  color: var(--gray-text);
  line-height: 1.5;
}
.series-item-body .model-list {
  margin-top: 8px;
  font-size: 0.72rem;
  color: var(--primary);
  font-weight: 600;
  line-height: 1.5;
}

/* === Factory Page === */
.factory-showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.factory-showcase-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
}

.factory-showcase-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.factory-showcase-item img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  transition: transform 0.5s;
}

.factory-showcase-item:hover img {
  transform: scale(1.06);
}

.factory-showcase-item .caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, transparent 100%);
}

.factory-showcase-item .caption h4 {
  color: white;
  font-size: 1.05rem;
  font-weight: 700;
}

.factory-showcase-item .caption p {
  color: rgba(255,255,255,0.7);
  font-size: 0.82rem;
  margin-top: 4px;
}

/* === Contact Page === */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-info-card {
  background: var(--gray-1);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.contact-info-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 24px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  align-items: flex-start;
}

.contact-info-item .icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-info-item .info h4 {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--gray-text);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.72rem;
}

.contact-info-item .info p {
  font-size: 1rem;
  color: var(--dark);
  font-weight: 600;
  line-height: 1.5;
}

.contact-form {
  background: white;
  border: 1px solid var(--gray-2);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

.contact-form h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-2);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-family: inherit;
  transition: all var(--transition);
  background: var(--gray-1);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 3px rgba(10,92,171,0.08);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.btn-submit {
  width: 100%;
  background: var(--primary-gradient);
  color: white;
  padding: 14px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(10,92,171,0.35);
}

/* === Global Network === */
.global-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.office-card {
  background: white;
  border: 1px solid var(--gray-2);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-align: center;
  transition: all var(--transition);
}

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

.office-card .city {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}

.office-card .type {
  font-size: 0.78rem;
  color: var(--gray-text);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.office-card .contact-line {
  font-size: 0.85rem;
  color: var(--gray-text);
  margin-bottom: 6px;
  line-height: 1.5;
}

/* === Animations === */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Responsive === */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
  
  .footer-brand {
    grid-column: 1 / -1;
  }

  .global-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .model-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .series-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .header-cta .btn-quote {
    display: none;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 24px;
  }

  .hero-stat .num {
    font-size: 1.6rem;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-grid,
  .about-section,
  .about-hero,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .factory-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .factory-showcase,
  .product-items-grid,
  .model-grid,
  .series-grid {
    grid-template-columns: 1fr;
  }

  .section-title,
  .page-banner h1 {
    font-size: 1.8rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .section {
    padding: 56px 0;
  }
}

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

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .global-grid {
    grid-template-columns: 1fr;
  }
}

/* === WhatsApp Float Button === */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: white;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: all var(--transition);
  animation: bounce 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* === Back to Top === */
.back-to-top {
  position: fixed;
  bottom: 90px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: white;
  opacity: 0;
  pointer-events: none;
  z-index: 998;
  transition: all var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--primary);
  transform: translateY(-4px);
}

/* === Product Detail Page === */
.product-detail-banner h1 { font-size: 2.4rem; }
.product-detail-banner p { color: rgba(255,255,255,0.85); }

.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}

.product-detail-main { min-width: 0; }

.detail-main-img {
  background: #f7f9fc;
  border-radius: 12px;
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border: 1px solid var(--border);
}
.detail-main-img img {
  max-width: 100%;
  max-height: 520px;
  object-fit: contain;
}

.detail-thumbs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.detail-thumbs img {
  width: 96px;
  height: 96px;
  object-fit: cover;
  border-radius: 6px;
  border: 2px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}
.detail-thumbs img:hover { border-color: var(--primary); }

.detail-section { margin-bottom: 36px; }
.detail-section h2 {
  font-size: 1.4rem;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary);
}
.detail-section p { color: var(--gray); line-height: 1.8; margin-bottom: 14px; }

.detail-features {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin: 16px 0;
}
.detail-features li {
  background: #f7f9fc;
  padding: 12px 14px;
  border-radius: 6px;
  font-size: 0.92rem;
  border-left: 3px solid var(--primary);
}

.detail-datasheets {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 16px;
}
.detail-datasheets img {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: white;
}
.detail-note { font-size: 0.9rem; color: var(--gray); font-style: italic; }

.product-detail-aside {
  position: sticky;
  top: 88px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.aside-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}
.aside-card h3 {
  font-size: 1.05rem;
  margin-bottom: 12px;
  color: var(--primary);
}
.aside-card p { font-size: 0.92rem; margin-bottom: 12px; line-height: 1.6; }
.aside-related { list-style: none; padding: 0; }
.aside-related li { padding: 6px 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.aside-related li:last-child { border-bottom: none; }
.aside-related a { color: var(--primary); }

/* === Category Index === */
.category-summary {
  background: #f7f9fc;
  border-radius: 10px;
  padding: 24px;
  margin-bottom: 32px;
  border-left: 4px solid var(--primary);
}
.category-summary h2 { font-size: 1.3rem; margin-bottom: 10px; }
.category-summary p { color: var(--gray); line-height: 1.8; }

/* Make model/series items clickable cards */
a.model-item {
  text-decoration: none;
  color: inherit;
  display: block;
  position: relative;
  transition: transform var(--transition);
}
a.model-item:hover {
  transform: translateY(-4px);
}
a.model-item:hover .model-item-cta {
  background: var(--primary);
  color: white;
}
.model-item-cta {
  display: block;
  text-align: center;
  padding: 6px 10px;
  margin-top: 8px;
  font-size: 0.82rem;
  background: #f0f3f8;
  border-radius: 4px;
  color: var(--primary);
  font-weight: 600;
  transition: all var(--transition);
}

a.series-item {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition);
}
a.series-item:hover {
  transform: translateY(-4px);
}
a.series-item:hover .series-item-body {
  border-color: var(--primary);
}
a.series-item .series-item-body {
  transition: border-color var(--transition);
}

@media (max-width: 1024px) {
  .product-detail-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .product-detail-aside {
    position: static;
  }
}
@media (max-width: 600px) {
  .product-detail-banner h1 { font-size: 1.6rem; }
  .detail-main-img { padding: 12px; }
  .detail-thumbs img { width: 72px; height: 72px; }
}