/* ===== Global Reset & Variables ===== */
:root {
  --primary-dark: #1a2332;
  --primary-blue: #0f3460;
  --accent-blue: #1e5f8e;
  --light-gray: #f5f6f8;
  --mid-gray: #e0e3e8;
  --text-dark: #2d3436;
  --text-mid: #636e72;
  --text-light: #b2bec3;
  --white: #ffffff;
  --success: #00b894;
  --warning: #fdcb6e;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 6px 24px rgba(0,0,0,0.12);
  --radius: 6px;
  --transition: all 0.3s ease;
}

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

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

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; font-family: inherit; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  gap: 8px;
}
.btn-primary {
  background: var(--primary-blue);
  color: var(--white);
}
.btn-primary:hover { background: var(--accent-blue); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}
.btn-outline:hover { background: var(--white); color: var(--primary-dark); }
.btn-ghost {
  background: transparent;
  color: var(--primary-blue);
  border: 2px solid var(--primary-blue);
}
.btn-ghost:hover { background: var(--primary-blue); color: var(--white); }
.btn-sm { padding: 8px 18px; font-size: 13px; }

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--white);
  box-shadow: var(--shadow);
}
.header-top {
  background: var(--primary-dark);
  color: var(--text-light);
  font-size: 13px;
  padding: 6px 0;
}
.header-top .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header-top-links { display: flex; gap: 20px; }
.header-top-links a:hover { color: var(--white); }

.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary-blue);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 18px;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dark);
  border-radius: var(--radius);
  transition: var(--transition);
}
.nav a:hover, .nav a.active {
  color: var(--primary-blue);
  background: var(--light-gray);
}

.header-actions { display: flex; align-items: center; gap: 12px; }
.search-box {
  display: flex;
  align-items: center;
  background: var(--light-gray);
  border-radius: 20px;
  padding: 6px 14px;
}
.search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
  width: 160px;
}
.search-box button {
  background: none;
  color: var(--text-mid);
  font-size: 16px;
}

.lang-switch {
  font-size: 14px;
  color: var(--text-mid);
  padding: 6px 10px;
  border-radius: var(--radius);
  cursor: pointer;
}
.lang-switch:hover { background: var(--light-gray); }

.mobile-menu-btn {
  display: none;
  font-size: 24px;
  background: none;
  color: var(--text-dark);
}

/* ===== Hero ===== */
.hero {
  margin-top: 108px;
  position: relative;
  height: 560px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url('https://images.unsplash.com/photo-1504307651254-35680f356dfd?w=1600') center/cover;
  opacity: 0.25;
}
.hero .container { position: relative; z-index: 1; }
.hero-content { max-width: 640px; color: var(--white); }
.hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}
.hero p {
  font-size: 18px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.2);
}
.hero-stat h3 { font-size: 32px; font-weight: 800; }
.hero-stat p { font-size: 14px; color: rgba(255,255,255,0.7); margin: 0; }

/* ===== Section Common ===== */
.section { padding: 72px 0; }
.section-alt { background: var(--light-gray); }
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 48px;
}
.section-header h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 12px;
}
.section-header p {
  font-size: 16px;
  color: var(--text-mid);
}

/* ===== Value Props ===== */
.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.value-card {
  background: var(--white);
  padding: 32px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
}
.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.value-icon {
  width: 56px;
  height: 56px;
  background: var(--light-gray);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin: 0 auto 16px;
}
.value-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.value-card p { font-size: 14px; color: var(--text-mid); }

/* ===== Product Grid ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.product-image {
  height: 220px;
  background: var(--light-gray);
  position: relative;
  overflow: hidden;
}
.product-image img { width: 100%; height: 100%; object-fit: cover; }
.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--primary-blue);
  color: var(--white);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 3px;
}
.product-info { padding: 20px; }
.product-info h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.product-info p { font-size: 13px; color: var(--text-mid); margin-bottom: 12px; }
.product-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.product-tag {
  font-size: 11px;
  padding: 3px 8px;
  background: var(--light-gray);
  color: var(--text-mid);
  border-radius: 3px;
}
.product-card .btn { width: 100%; }

/* ===== Applications ===== */
.app-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.app-card {
  position: relative;
  height: 280px;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
}
.app-card img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.app-card:hover img { transform: scale(1.05); }
.app-overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 24px 20px;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  color: var(--white);
}
.app-overlay h3 { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.app-overlay p { font-size: 13px; opacity: 0.85; }

/* ===== Projects ===== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.project-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.project-image { height: 200px; overflow: hidden; }
.project-image img { width: 100%; height: 100%; object-fit: cover; }
.project-info { padding: 20px; }
.project-location {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--accent-blue);
  font-weight: 600;
  margin-bottom: 8px;
}
.project-info h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.project-info p { font-size: 13px; color: var(--text-mid); }

/* ===== Factory / Trust ===== */
.factory-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.factory-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.factory-images img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius);
}
.factory-images img:first-child { grid-column: span 2; height: 240px; }
.factory-content h2 { font-size: 30px; font-weight: 800; margin-bottom: 16px; color: var(--primary-dark); }
.factory-content p { font-size: 15px; color: var(--text-mid); margin-bottom: 20px; }
.factory-features { display: flex; flex-direction: column; gap: 12px; margin-bottom: 24px; }
.factory-feature { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.factory-feature .check { color: var(--success); font-weight: 700; }

.logo-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
  align-items: center;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--mid-gray);
}
.logo-wall-item {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-light);
  padding: 8px 20px;
}

/* ===== Certifications ===== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.cert-card {
  background: var(--white);
  border: 1px solid var(--mid-gray);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: var(--transition);
}
.cert-card:hover { border-color: var(--primary-blue); box-shadow: var(--shadow); }
.cert-icon {
  font-size: 40px;
  margin-bottom: 12px;
}
.cert-card h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.cert-card p { font-size: 12px; color: var(--text-mid); }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--mid-gray);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-question {
  width: 100%;
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  background: none;
  text-align: left;
}
.faq-question .arrow { transition: var(--transition); font-size: 18px; color: var(--text-mid); }
.faq-item.active .faq-question .arrow { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer-inner { padding: 0 24px 18px; font-size: 14px; color: var(--text-mid); line-height: 1.7; }

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-blue));
  color: var(--white);
  text-align: center;
  padding: 64px 0;
}
.cta-section h2 { font-size: 30px; font-weight: 800; margin-bottom: 12px; }
.cta-section p { font-size: 16px; opacity: 0.85; margin-bottom: 28px; max-width: 600px; margin-left: auto; margin-right: auto; }

/* ===== Footer ===== */
.footer {
  background: var(--primary-dark);
  color: var(--text-light);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-col h4 {
  color: var(--white);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-col p { font-size: 13px; line-height: 1.8; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 13px; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--white); }
.footer-contact-item { display: flex; gap: 8px; font-size: 13px; margin-bottom: 10px; }
.footer-newsletter { display: flex; margin-top: 12px; }
.footer-newsletter input {
  flex: 1;
  padding: 10px 14px;
  border: none;
  border-radius: 4px 0 0 4px;
  font-size: 13px;
  outline: none;
}
.footer-newsletter button {
  padding: 10px 18px;
  background: var(--primary-blue);
  color: var(--white);
  border-radius: 0 4px 4px 0;
  font-size: 13px;
  font-weight: 600;
}
.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: 12px;
}
.footer-certs { display: flex; gap: 16px; }
.footer-cert {
  padding: 4px 10px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 3px;
  font-size: 11px;
  font-weight: 600;
}

/* ===== WhatsApp Float ===== */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 28px;
  box-shadow: 0 4px 16px rgba(37,211,102,0.4);
  z-index: 999;
  transition: var(--transition);
  cursor: pointer;
}
.whatsapp-float:hover { transform: scale(1.1); }

/* ===== Quote Modal ===== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--white);
  border-radius: var(--radius);
  width: 100%;
  max-width: 480px;
  padding: 32px;
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  font-size: 22px;
  color: var(--text-mid);
}
.modal h3 { font-size: 22px; font-weight: 800; margin-bottom: 6px; color: var(--primary-dark); }
.modal p { font-size: 14px; color: var(--text-mid); margin-bottom: 24px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-dark); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--mid-gray);
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--primary-blue);
}
.form-group textarea { resize: vertical; min-height: 80px; }
.modal .btn { width: 100%; margin-top: 8px; }

/* ===== Breadcrumb ===== */
.breadcrumb {
  margin-top: 108px;
  background: var(--light-gray);
  padding: 14px 0;
  font-size: 13px;
  color: var(--text-mid);
}
.breadcrumb a:hover { color: var(--primary-blue); }
.breadcrumb .separator { margin: 0 8px; }

/* ===== Page Header ===== */
.page-header {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-blue));
  color: var(--white);
  padding: 48px 0;
  text-align: center;
}
.page-header h1 { font-size: 36px; font-weight: 800; margin-bottom: 8px; }
.page-header p { font-size: 16px; opacity: 0.85; }

/* ===== Product List Layout ===== */
.product-list-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
}
.sidebar {
  background: var(--white);
  border: 1px solid var(--mid-gray);
  border-radius: var(--radius);
  padding: 24px;
  height: fit-content;
  position: sticky;
  top: 130px;
}
.sidebar h4 { font-size: 15px; font-weight: 700; margin-bottom: 16px; color: var(--primary-dark); }
.filter-group { margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--mid-gray); }
.filter-group:last-child { border-bottom: none; }
.filter-group h5 { font-size: 13px; font-weight: 600; margin-bottom: 10px; color: var(--text-dark); }
.filter-option { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; font-size: 13px; color: var(--text-mid); cursor: pointer; }
.filter-option input { cursor: pointer; }
.product-list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.product-list-header p { font-size: 14px; color: var(--text-mid); }
.sort-select {
  padding: 8px 14px;
  border: 1px solid var(--mid-gray);
  border-radius: 4px;
  font-size: 13px;
  outline: none;
}

/* ===== Product Detail ===== */
.product-detail-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.product-gallery-main {
  width: 100%;
  height: 420px;
  background: var(--light-gray);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 12px;
}
.product-gallery-main img { width: 100%; height: 100%; object-fit: cover; }
.product-gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.product-gallery-thumb {
  height: 80px;
  background: var(--light-gray);
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
}
.product-gallery-thumb.active { border-color: var(--primary-blue); }
.product-gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }

.product-detail-info h1 { font-size: 28px; font-weight: 800; margin-bottom: 8px; color: var(--primary-dark); }
.product-model { font-size: 14px; color: var(--text-mid); margin-bottom: 16px; }
.product-highlights {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.highlight-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--light-gray);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
}
.highlight-tag .icon { color: var(--success); }

.product-short-desc { font-size: 15px; color: var(--text-mid); margin-bottom: 24px; line-height: 1.8; }

.purchase-info {
  background: var(--light-gray);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}
.purchase-info-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  font-size: 14px;
  border-bottom: 1px solid var(--mid-gray);
}
.purchase-info-row:last-child { border-bottom: none; }
.purchase-info-row .label { color: var(--text-mid); }
.purchase-info-row .value { font-weight: 600; color: var(--text-dark); }

.detail-cta { display: flex; gap: 12px; }
.detail-cta .btn { flex: 1; }

/* ===== Tabs ===== */
.tabs { border-bottom: 2px solid var(--mid-gray); margin-bottom: 32px; display: flex; gap: 0; }
.tab-btn {
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-mid);
  background: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
}
.tab-btn.active { color: var(--primary-blue); border-bottom-color: var(--primary-blue); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ===== Spec Table ===== */
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table th, .spec-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--mid-gray);
  font-size: 14px;
}
.spec-table th { background: var(--light-gray); font-weight: 700; color: var(--primary-dark); width: 40%; }

/* ===== Related Products ===== */
.related-products { margin-top: 56px; }
.related-products h2 { font-size: 24px; font-weight: 800; margin-bottom: 24px; color: var(--primary-dark); }

/* ===== Application Detail ===== */
.app-detail-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 48px;
}
.app-detail-hero img { width: 100%; height: 360px; object-fit: cover; border-radius: var(--radius); }
.app-detail-hero h1 { font-size: 32px; font-weight: 800; margin-bottom: 16px; color: var(--primary-dark); }
.app-detail-hero p { font-size: 15px; color: var(--text-mid); line-height: 1.8; margin-bottom: 20px; }
.pain-points { display: flex; flex-direction: column; gap: 10px; }
.pain-point { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text-mid); }
.pain-point .icon { color: #e17055; flex-shrink: 0; margin-top: 2px; }

/* ===== Tech Support ===== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.tech-card {
  background: var(--white);
  border: 1px solid var(--mid-gray);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}
.tech-card:hover { border-color: var(--primary-blue); box-shadow: var(--shadow); }
.tech-icon { font-size: 40px; margin-bottom: 14px; }
.tech-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.tech-card p { font-size: 13px; color: var(--text-mid); margin-bottom: 16px; }
.doc-list { margin-top: 32px; }
.doc-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: var(--white);
  border: 1px solid var(--mid-gray);
  border-radius: var(--radius);
  margin-bottom: 10px;
  transition: var(--transition);
}
.doc-item:hover { border-color: var(--primary-blue); }
.doc-info { display: flex; align-items: center; gap: 14px; }
.doc-icon { font-size: 28px; color: var(--accent-blue); }
.doc-info h4 { font-size: 14px; font-weight: 600; }
.doc-info p { font-size: 12px; color: var(--text-mid); }

/* ===== About Us ===== */
.about-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 56px;
}
.about-hero img { width: 100%; height: 400px; object-fit: cover; border-radius: var(--radius); }
.about-hero h1 { font-size: 34px; font-weight: 800; margin-bottom: 16px; color: var(--primary-dark); }
.about-hero p { font-size: 15px; color: var(--text-mid); line-height: 1.9; margin-bottom: 16px; }

.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--mid-gray);
}
.timeline-item { position: relative; margin-bottom: 28px; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 4px;
  width: 14px;
  height: 14px;
  background: var(--primary-blue);
  border-radius: 50%;
  border: 3px solid var(--white);
  box-shadow: 0 0 0 2px var(--primary-blue);
}
.timeline-year { font-size: 15px; font-weight: 800; color: var(--primary-blue); margin-bottom: 4px; }
.timeline-item h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.timeline-item p { font-size: 13px; color: var(--text-mid); }

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.process-step {
  text-align: center;
  position: relative;
}
.step-number {
  width: 48px;
  height: 48px;
  background: var(--primary-blue);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  margin: 0 auto 12px;
}
.process-step h4 { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.process-step p { font-size: 12px; color: var(--text-mid); }

/* ===== Contact Us ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
}
.contact-info-card {
  background: var(--light-gray);
  border-radius: var(--radius);
  padding: 32px;
}
.contact-info-card h3 { font-size: 20px; font-weight: 800; margin-bottom: 20px; color: var(--primary-dark); }
.contact-item {
  display: flex;
  gap: 14px;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--mid-gray);
}
.contact-item:last-child { border-bottom: none; }
.contact-item-icon {
  width: 44px;
  height: 44px;
  background: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.contact-item h4 { font-size: 14px; font-weight: 700; margin-bottom: 2px; }
.contact-item p { font-size: 13px; color: var(--text-mid); }
.response-promise {
  background: var(--primary-blue);
  color: var(--white);
  padding: 16px 20px;
  border-radius: var(--radius);
  margin-top: 20px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.contact-form-card {
  background: var(--white);
  border: 1px solid var(--mid-gray);
  border-radius: var(--radius);
  padding: 32px;
}
.contact-form-card h3 { font-size: 20px; font-weight: 800; margin-bottom: 6px; color: var(--primary-dark); }
.contact-form-card > p { font-size: 14px; color: var(--text-mid); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.map-container {
  margin-top: 40px;
  height: 360px;
  background: var(--light-gray);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}
.map-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #dfe6e9, #b2bec3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-mid);
  font-size: 16px;
}

/* ===== Blog ===== */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.blog-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.blog-image { height: 200px; overflow: hidden; }
.blog-image img { width: 100%; height: 100%; object-fit: cover; }
.blog-content { padding: 20px; }
.blog-meta { display: flex; gap: 12px; font-size: 12px; color: var(--text-mid); margin-bottom: 10px; }
.blog-category {
  display: inline-block;
  padding: 3px 10px;
  background: var(--light-gray);
  color: var(--primary-blue);
  border-radius: 3px;
  font-size: 11px;
  font-weight: 600;
  margin-bottom: 10px;
}
.blog-content h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.blog-content p { font-size: 13px; color: var(--text-mid); margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.read-more { font-size: 13px; font-weight: 600; color: var(--primary-blue); }

.blog-detail { max-width: 800px; margin: 0 auto; }
.blog-detail-header { text-align: center; margin-bottom: 32px; }
.blog-detail-header .blog-category { margin-bottom: 16px; }
.blog-detail-header h1 { font-size: 32px; font-weight: 800; margin-bottom: 16px; color: var(--primary-dark); line-height: 1.3; }
.blog-detail-meta { display: flex; justify-content: center; gap: 20px; font-size: 14px; color: var(--text-mid); }
.blog-detail-image { width: 100%; height: 420px; object-fit: cover; border-radius: var(--radius); margin-bottom: 32px; }
.blog-detail-content p { font-size: 16px; line-height: 1.9; color: var(--text-dark); margin-bottom: 20px; }
.blog-detail-content h2 { font-size: 24px; font-weight: 800; margin: 32px 0 16px; color: var(--primary-dark); }
.blog-detail-content h3 { font-size: 20px; font-weight: 700; margin: 24px 0 12px; color: var(--primary-dark); }
.blog-detail-content ul { margin-bottom: 20px; padding-left: 24px; }
.blog-detail-content ul li { font-size: 16px; line-height: 1.9; color: var(--text-dark); margin-bottom: 8px; list-style: disc; }
.internal-link { color: var(--primary-blue); font-weight: 600; text-decoration: underline; }

/* ===== Toast ===== */
.toast {
  position: fixed;
  top: 120px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: var(--success);
  color: var(--white);
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow-hover);
  z-index: 3000;
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .value-grid, .app-grid, .cert-grid, .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid, .project-grid, .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .nav, .search-box, .lang-switch { display: none; }
  .mobile-menu-btn { display: block; }
  .hero { height: auto; padding: 60px 0; margin-top: 72px; }
  .hero h1 { font-size: 28px; }
  .hero p { font-size: 15px; }
  .hero-stats { gap: 20px; flex-wrap: wrap; }
  .hero-stat h3 { font-size: 24px; }
  .section { padding: 48px 0; }
  .section-header h2 { font-size: 24px; }
  .value-grid, .app-grid, .cert-grid, .tech-grid,
  .product-grid, .project-grid, .blog-grid { grid-template-columns: 1fr; }
  .factory-grid, .product-detail-top, .app-detail-hero,
  .about-hero, .contact-layout { grid-template-columns: 1fr; }
  .product-list-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .process-steps { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .page-header h1 { font-size: 26px; }
  .breadcrumb { margin-top: 72px; }
  .header-top { display: none; }
  .tabs { overflow-x: auto; }
  .tab-btn { padding: 12px 16px; font-size: 13px; white-space: nowrap; }
}

/* Mobile nav overlay */
.mobile-nav {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--white);
  z-index: 999;
  padding: 24px;
  overflow-y: auto;
}
.mobile-nav.active { display: block; }
.mobile-nav a {
  display: block;
  padding: 14px 0;
  font-size: 16px;
  font-weight: 600;
  border-bottom: 1px solid var(--mid-gray);
  color: var(--text-dark);
}