/* ============================================
   Jiaxing Weeyuan Kids Toy Cars
   Static SEO Website - Main Stylesheet
   Style: Modern European/American B2B
   ============================================ */

/* ===== CSS Variables (Easy to customize) ===== */
:root {
  --primary: #1a56db;
  --primary-dark: #143ea8;
  --primary-light: #3b82f6;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --dark: #1e293b;
  --gray-900: #0f172a;
  --gray-700: #334155;
  --gray-500: #64748b;
  --gray-300: #cbd5e1;
  --gray-100: #f1f5f9;
  --gray-50: #f8fafc;
  --white: #ffffff;
  --success: #10b981;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.15);
  --transition: all 0.3s ease;
  --max-width: 1200px;
  --header-height: 72px;
}

/* ===== Reset ===== */
*, *::before, *::after {
  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, sans-serif;
  color: var(--gray-700);
  line-height: 1.7;
  background: var(--white);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', 'Inter', sans-serif;
  color: var(--dark);
  font-weight: 700;
  line-height: 1.3;
}

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

a:hover {
  color: var(--primary-dark);
}

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

ul {
  list-style: none;
}

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

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

.section-sm {
  padding: 48px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 56px;
}

.section-title .badge {
  display: inline-block;
  background: var(--gray-100);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.section-title h2 {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.section-title p {
  font-size: 1.1rem;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  font-family: inherit;
}

.btn-primary {
  background: #039BE5;
  color: #ffffff;
}

.btn-primary:hover {
  background: #ffffff;
  color: #000000;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

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

.btn-accent:hover {
  background: var(--accent-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.1rem;
}

/* ===== Header / Navigation ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-100);
  z-index: 1000;
  transition: var(--transition);
}

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

.nav {
  max-width: var(--max-width);
  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-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--dark);
  text-decoration: none;
}

.logo:hover {
  color: var(--dark);
}

.logo-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-icon img {
  width: auto;
  height: 100%;
  max-width: 100%;
  object-fit: contain;
  display: block;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-text small {
  font-size: 0.7rem;
  color: var(--gray-500);
  font-weight: 400;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-menu a {
  color: var(--gray-700);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 8px 0;
}

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

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

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

.nav-cta {
  margin-left: 16px;
}

.nav-cta .btn-primary {
  color: #ffffff;
}

/* ===== Language Switcher ===== */
.nav-lang {
  position: relative;
  margin-left: 8px;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: none;
  border: 1px solid var(--gray-300);
  border-radius: 8px;
  cursor: pointer;
  color: var(--gray-700);
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
  line-height: 1;
  transition: var(--transition);
}

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

.lang-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.lang-caret {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.nav-lang.open .lang-caret {
  transform: rotate(180deg);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 172px;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  padding: 6px;
  margin: 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  z-index: 1100;
}

.nav-lang.open .lang-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-menu a {
  display: block;
  padding: 8px 14px;
  border-radius: 6px;
  color: var(--gray-700);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
}

.lang-menu a:hover {
  background: var(--gray-50);
  color: var(--primary);
}

.lang-menu a.active {
  color: var(--primary);
  font-weight: 600;
  background: rgba(26, 86, 219, 0.06);
}

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

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--dark);
  transition: var(--transition);
  border-radius: 2px;
}

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

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

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

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: url('../images/dfaa.jpg') center center / cover no-repeat;
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(26, 86, 219, 0.4) 0%, rgba(30, 58, 138, 0.4) 50%, rgba(30, 41, 59, 0.4) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-text h1 {
  font-size: 3.2rem;
  color: var(--white);
  margin-bottom: 20px;
  line-height: 1.2;
}

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

.hero-text p {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
  max-width: 500px;
}

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

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.hero-stat .number {
  font-family: 'Poppins', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--white);
}

.hero-stat .label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card {
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 24px;
  padding: 48px;
  max-width: 420px;
  width: 100%;
}

.hero-card h3 {
  color: var(--white);
  font-size: 1.4rem;
  margin-bottom: 24px;
}

.hero-card ul {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hero-card li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: rgba(255,255,255,0.9);
  font-size: 0.95rem;
}

.hero-card li .check {
  width: 24px;
  height: 24px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: white;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ===== Page Hero (inner pages) ===== */
.page-hero {
  background: linear-gradient(135deg, #1a56db 0%, #1e3a8a 100%);
  padding: calc(var(--header-height) + 60px) 0 60px;
  text-align: center;
  color: var(--white);
}

.page-hero h1 {
  font-size: 2.8rem;
  color: var(--white);
  margin-bottom: 12px;
}

.page-hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
}

.breadcrumb a {
  color: rgba(255,255,255,0.8);
}

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

/* ===== Features / Why Choose Us ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  color: var(--primary);
}

.feature-icon svg {
  display: block;
}

.feature-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--gray-500);
}

/* ===== Product Cards ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

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

.product-image {
  width: 100%;
  height: 260px;
  background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  overflow: hidden;
  position: relative;
}

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

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--accent);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
}

.product-body {
  padding: 24px;
}

.product-body h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

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

.product-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.product-specs span {
  background: var(--gray-100);
  color: var(--gray-700);
  font-size: 0.8rem;
  padding: 4px 10px;
  border-radius: 4px;
}

.product-link {
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

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

.about-visual {
  position: relative;
}

.about-visual .img-main {
  width: 100%;
  height: 420px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #dbeafe, #bfdbfe);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.about-visual .img-badge {
  position: absolute;
  bottom: -24px;
  right: -24px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px 32px;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.about-visual .img-badge .num {
  font-family: 'Poppins', sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}

.about-visual .img-badge .text {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-top: 4px;
}

.about-text h2 {
  font-size: 2.2rem;
  margin-bottom: 20px;
}

.about-text p {
  margin-bottom: 16px;
  color: var(--gray-700);
}

.about-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 24px 0 32px;
}

.about-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  color: var(--dark);
}

.about-list li::before {
  content: '✓';
  width: 24px;
  height: 24px;
  background: var(--success);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

/* ===== Stats Counter ===== */
.stats-section {
  background: var(--gray-900);
  padding: 64px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item .num {
  font-family: 'Poppins', sans-serif;
  font-size: 3rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
}

.stat-item .num span {
  color: var(--accent);
}

.stat-item .label {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.6);
  margin-top: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.cert-item {
  background: var(--gray-50);
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  transition: var(--transition);
}

.cert-item:hover {
  border-color: var(--primary);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.cert-item .cert-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.cert-item h4 {
  font-size: 1rem;
  margin-bottom: 6px;
}

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

/* ===== Process / Timeline ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
}

.process-grid::before {
  content: '';
  position: absolute;
  top: 32px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: var(--gray-100);
  z-index: 0;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.process-step .step-num {
  width: 64px;
  height: 64px;
  background: var(--white);
  border: 3px solid var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Poppins', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  margin: 0 auto 20px;
  transition: var(--transition);
}

.process-step:hover .step-num {
  background: var(--primary);
  color: var(--white);
}

.process-step h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.9rem;
  color: var(--gray-500);
}

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

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.contact-info-item .icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-info-item h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.contact-info-item p {
  font-size: 0.95rem;
  color: var(--gray-500);
  line-height: 1.6;
}

.contact-info-item a {
  color: var(--gray-500);
}

.contact-info-item a:hover {
  color: var(--primary);
}

.contact-form-wrap {
  background: var(--gray-50);
  border-radius: var(--radius);
  padding: 40px;
}

.contact-form-wrap h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.contact-form-wrap > p {
  font-size: 0.95rem;
  color: var(--gray-500);
  margin-bottom: 28px;
}

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

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

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
  color: var(--dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--gray-700);
  background: var(--white);
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}

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

.form-note {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-top: 12px;
}

.form-success {
  display: none;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.form-success.show {
  display: block;
}

/* ===== Map ===== */
.map-section {
  padding: 0;
}

.map-wrap {
  width: 100%;
  height: 400px;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  border-top: 1px solid var(--gray-100);
  border-bottom: 1px solid var(--gray-100);
}

.map-wrap iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--dark);
  background: var(--white);
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--gray-50);
}

.faq-question .faq-toggle {
  font-size: 1.3rem;
  color: var(--primary);
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 0.95rem;
  color: var(--gray-500);
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 72px 0;
  text-align: center;
  color: var(--white);
}

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

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

/* ===== Footer ===== */
.footer {
  background: var(--gray-900);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 0;
}

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

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

.footer-brand .logo:hover {
  color: var(--white);
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

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

.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 1.1rem;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

.footer-col h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 20px;
  font-weight: 600;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: var(--white);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
}

.footer-bottom a:hover {
  color: var(--white);
}

/* ===== Product Filter ===== */
.product-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 20px;
  border: 1px solid var(--gray-300);
  border-radius: 20px;
  background: var(--white);
  color: var(--gray-700);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

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

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-text h1 {
    font-size: 2.4rem;
  }

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

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

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

  .about-visual .img-main {
    height: 320px;
  }

  .section-title h2 {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    box-shadow: var(--shadow-md);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    align-items: flex-start;
  }

  .nav-menu.active {
    transform: translateY(0);
  }

  .nav-toggle {
    display: flex;
  }

  .nav-cta {
    margin-left: 0;
    width: 100%;
  }

  .nav-cta .btn {
    width: 100%;
    justify-content: center;
  }

  .nav-lang {
    margin-left: 0;
    width: 100%;
  }

  .lang-btn {
    width: 100%;
    justify-content: space-between;
  }

  .lang-menu {
    position: static;
    width: 100%;
    min-width: 0;
    margin-top: 8px;
    box-shadow: none;
    border: 1px solid var(--gray-100);
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
  }

  .nav-lang.open .lang-menu {
    display: block;
  }

  .hero {
    min-height: auto;
    padding: calc(var(--header-height) + 40px) 0 60px;
  }

  .hero-text h1 {
    font-size: 2rem;
  }

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

  .hero-stats {
    gap: 24px;
  }

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

  .section {
    padding: 56px 0;
  }

  .section-title h2 {
    font-size: 1.7rem;
  }

  .features-grid,
  .cert-grid,
  .process-grid,
  .products-grid,
  .stats-grid,
  .footer-grid,
  .about-list {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .page-hero h1 {
    font-size: 2rem;
  }

  .about-visual .img-badge {
    right: 0;
    bottom: -20px;
    padding: 16px 24px;
  }

  .stat-item .num {
    font-size: 2.2rem;
  }

  .cta-section h2 {
    font-size: 1.6rem;
  }

  .contact-form-wrap {
    padding: 28px 20px;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-card {
    padding: 32px 24px;
  }
}