/* ===== CSS Variables ===== */
:root {
  --primary: #1a365d;
  --primary-light: #2c5282;
  --primary-dark: #0f2440;
  --accent: #d4a843;
  --accent-light: #e8c36a;
  --white: #ffffff;
  --gray-50: #f8f9fa;
  --gray-100: #f1f3f5;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-500: #6c757d;
  --gray-700: #495057;
  --gray-900: #212529;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-lg: 16px;
  --transition: 0.3s ease;
  --max-width: 1200px;
}

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

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

body {
  font-family: 'Inter', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Header & Navigation ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

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

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 800;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray-700);
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-btn {
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--gray-700);
}

.lang-btn:hover {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-900);
  transition: all var(--transition);
  border-radius: 2px;
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  background-image: url('../images/hero-bg.svg');
  background-size: cover;
  background-position: center;
  overflow: hidden;
  padding-top: 72px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(212,168,67,0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.05) 0%, transparent 40%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  padding: 60px 0;
}

.hero-badge {
  display: inline-block;
  background: rgba(212,168,67,0.2);
  color: var(--accent-light);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
  border: 1px solid rgba(212,168,67,0.3);
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero h1 .highlight {
  color: var(--accent);
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 36px;
  max-width: 540px;
  line-height: 1.7;
}

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

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

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

.hero-stat .number {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
}

.hero-stat .label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-top: 4px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: var(--primary-dark);
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(212,168,67,0.4);
}

.btn-outline {
  border-color: rgba(255,255,255,0.4);
  color: var(--white);
  background: transparent;
}

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

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

.btn-dark:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(26,54,93,0.3);
}

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

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-label {
  display: inline-block;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 10px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
}

.section-bg {
  background: var(--gray-50);
}

/* ===== About Preview (Home) ===== */
.about-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-image-text {
  color: rgba(255,255,255,0.15);
  font-size: 6rem;
  font-weight: 900;
}

.about-text h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
}

.about-text p {
  color: var(--gray-500);
  margin-bottom: 16px;
  line-height: 1.7;
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

.about-highlight {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--gray-700);
}

.about-highlight .icon {
  width: 32px;
  height: 32px;
  background: rgba(212,168,67,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 0.9rem;
  flex-shrink: 0;
}

/* ===== Featured Product ===== */
.featured-product {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: start;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

/* Product Gallery */
.product-gallery {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.gallery-main {
  background: #fafafa;
  border-radius: var(--radius-lg);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--gray-200);
}

.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 0.3s ease;
  padding: 16px;
}

.gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}

.gallery-thumb {
  aspect-ratio: 1;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid var(--gray-200);
  transition: all var(--transition);
  background: #fafafa;
}

.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 4px;
}

.gallery-thumb:hover {
  border-color: var(--accent);
}

.gallery-thumb.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(212,168,67,0.3);
}

.featured-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--accent);
  color: var(--white);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  z-index: 2;
}

.featured-info h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.featured-info .product-subtitle {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.featured-info p {
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 20px;
}

.featured-info .product-note {
  font-size: 0.88rem;
  color: var(--gray-500);
  font-style: italic;
}

/* Product Specs Grid */
.product-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 20px;
  padding: 16px;
  background: var(--gray-50);
  border-radius: var(--radius);
}

.spec-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.spec-label {
  font-size: 0.75rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.spec-value {
  font-size: 0.9rem;
  color: var(--primary);
  font-weight: 600;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.feature-tag {
  background: var(--gray-100);
  color: var(--gray-700);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* ===== Category Tabs ===== */
.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
}

.cat-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: 30px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-700);
  transition: all var(--transition);
  font-family: inherit;
}

.cat-tab:hover {
  border-color: var(--accent);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.cat-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(26,54,93,0.3);
}

.cat-tab-icon {
  font-size: 1.1rem;
}

/* Category Panels */
.category-panel {
  display: none;
  animation: panelFadeIn 0.4s ease;
}

.category-panel.active {
  display: block;
}

@keyframes panelFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.category-intro {
  margin-bottom: 30px;
}

.category-intro h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.category-intro p {
  font-size: 0.95rem;
  color: var(--gray-500);
  line-height: 1.7;
  max-width: 700px;
}

/* Representative Products Grid */
.rep-products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.rep-product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
}

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

.rep-product-img {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.rep-product-img.bg-pink { background: linear-gradient(135deg, #fef5f8, #fce4ec); }
.rep-product-img.bg-blue { background: linear-gradient(135deg, #f0f5ff, #d0e2ff); }
.rep-product-img.bg-green { background: linear-gradient(135deg, #f0faf4, #c3e6cb); }
.rep-product-img.bg-purple { background: linear-gradient(135deg, #f8f0ff, #dcc8ff); }
.rep-product-img.bg-orange { background: linear-gradient(135deg, #fff8f0, #ffe0b2); }
.rep-product-img.bg-teal { background: linear-gradient(135deg, #f0faf9, #b2dfdb); }

.product-icon-placeholder {
  font-size: 3.5rem;
  opacity: 0.7;
}

.rep-product-info {
  padding: 16px;
}

.rep-product-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--white);
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.rep-product-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
  line-height: 1.3;
}

.rep-product-info p {
  font-size: 0.82rem;
  color: var(--gray-500);
  line-height: 1.5;
  margin-bottom: 10px;
}

.rep-product-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.82rem;
  transition: gap var(--transition);
}

.rep-product-link:hover {
  gap: 8px;
}

/* ===== Product Categories (Grid) ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--gray-200);
}

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

.product-card-image {
  aspect-ratio: 16/10;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--gray-300);
  position: relative;
  overflow: hidden;
}

.product-card-image.bg-pink { background: linear-gradient(135deg, #fef5f8, #fce4ec); }
.product-card-image.bg-blue { background: linear-gradient(135deg, #f0f5ff, #d0e2ff); }
.product-card-image.bg-green { background: linear-gradient(135deg, #f0faf4, #c3e6cb); }
.product-card-image.bg-purple { background: linear-gradient(135deg, #f8f0ff, #dcc8ff); }
.product-card-image.bg-orange { background: linear-gradient(135deg, #fff8f0, #ffe0b2); }
.product-card-image.bg-teal { background: linear-gradient(135deg, #f0faf9, #b2dfdb); }

.product-card-image .card-bg {
  position: absolute;
  inset: 0;
  opacity: 0.08;
}

.product-card-body {
  padding: 20px;
}

.product-card-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.product-card-body p {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.6;
}

.product-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  margin-top: 12px;
  transition: gap var(--transition);
}

.product-card-link:hover {
  gap: 10px;
}

/* ===== Advantages ===== */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-card {
  text-align: center;
  padding: 36px 24px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--gray-200);
}

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

.advantage-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, rgba(212,168,67,0.15), rgba(212,168,67,0.05));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.5rem;
}

.advantage-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.advantage-card p {
  font-size: 0.88rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 80px 0;
  text-align: center;
}

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

.cta-section p {
  color: rgba(255,255,255,0.7);
  font-size: 1.05rem;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
  background: var(--gray-900);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}

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

.footer-brand .logo {
  color: var(--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: 36px;
  height: 36px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  color: var(--white);
}

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

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  transition: color var(--transition);
}

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

.footer-contact-item {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.9rem;
}

.footer-contact-item .fc-icon {
  color: var(--accent);
  flex-shrink: 0;
  width: 20px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

/* ===== Page Header (Inner Pages) ===== */
.page-header {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 120px 0 60px;
  text-align: center;
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
}

.page-header p {
  color: rgba(255,255,255,0.7);
  font-size: 1.05rem;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

.breadcrumb a {
  color: rgba(255,255,255,0.7);
}

.breadcrumb a:hover {
  color: var(--accent);
}

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

.about-intro-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-intro-image .placeholder {
  color: rgba(255,255,255,0.1);
  font-size: 8rem;
  font-weight: 900;
}

.about-intro-text h2 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
}

.about-intro-text p {
  color: var(--gray-500);
  line-height: 1.8;
  margin-bottom: 16px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.value-card {
  background: var(--white);
  padding: 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  text-align: center;
  transition: all var(--transition);
}

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

.value-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.value-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.value-card p {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.6;
}

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

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gray-200);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
  padding-left: 30px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -30px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  border: 3px solid var(--white);
  box-shadow: 0 0 0 3px var(--accent);
}

.timeline-year {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.timeline-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.timeline-item p {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* Certifications */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.cert-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: all var(--transition);
}

.cert-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
}

.cert-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.cert-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.cert-card p {
  font-size: 0.8rem;
  color: var(--gray-500);
}

/* ===== Products Page ===== */
.products-page-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.product-page-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--gray-200);
}

.product-page-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.product-page-image {
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  position: relative;
}

.product-page-image.bg-blue { background: linear-gradient(135deg, #e8f0fe, #d0e2ff); }
.product-page-image.bg-green { background: linear-gradient(135deg, #e6f5ec, #c3e6cb); }
.product-page-image.bg-purple { background: linear-gradient(135deg, #f0e8fe, #dcc8ff); }
.product-page-image.bg-orange { background: linear-gradient(135deg, #fff3e0, #ffe0b2); }
.product-page-image.bg-pink { background: linear-gradient(135deg, #fce4ec, #f8bbd0); }
.product-page-image.bg-teal { background: linear-gradient(135deg, #e0f2f1, #b2dfdb); }

.product-page-body {
  padding: 24px;
}

.product-page-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.product-page-body p {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.6;
  margin-bottom: 16px;
}

.product-items {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.product-item-tag {
  background: var(--gray-100);
  color: var(--gray-700);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
}

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 40px;
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  gap: 16px;
  transition: all var(--transition);
}

.contact-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
}

.contact-card-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(212,168,67,0.15), rgba(212,168,67,0.05));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.contact-card p {
  font-size: 0.88rem;
  color: var(--gray-500);
  line-height: 1.5;
}

.contact-form-box {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--gray-900);
  transition: border-color var(--transition);
  background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

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

.form-submit:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
}

.map-placeholder {
  margin-top: 40px;
  background: var(--gray-100);
  border-radius: var(--radius-lg);
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-500);
  font-size: 0.95rem;
  border: 1px solid var(--gray-200);
}

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

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

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.5rem; }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .products-page-grid { grid-template-columns: repeat(2, 1fr); }
  .rep-products-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 20px;
    gap: 0;
    box-shadow: var(--shadow-lg);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-100);
    width: 100%;
  }

  .mobile-toggle {
    display: flex;
  }

  .hero { min-height: auto; padding: 100px 0 60px; }
  .hero h1 { font-size: 2rem; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stat .number { font-size: 1.6rem; }

  .about-preview { grid-template-columns: 1fr; gap: 30px; }
  .about-intro { grid-template-columns: 1fr; gap: 30px; }
  .featured-product { grid-template-columns: 1fr; gap: 30px; padding: 24px; }
  .gallery-thumbs { grid-template-columns: repeat(6, 1fr); gap: 6px; }
  .products-grid { grid-template-columns: 1fr; }
  .products-page-grid { grid-template-columns: 1fr; }
  .rep-products-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .category-tabs { gap: 8px; }
  .cat-tab { padding: 8px 14px; font-size: 0.82rem; }
  .product-specs { grid-template-columns: 1fr 1fr; }

  .section { padding: 50px 0; }
  .section-title { font-size: 1.7rem; }
  .page-header { padding: 100px 0 40px; }
  .page-header h1 { font-size: 1.8rem; }

  .hero-buttons { flex-direction: column; }
  .btn { justify-content: center; }

  .footer-bottom {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .about-highlights { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
}