/* ============================================
   ZKT Technology - English Website Stylesheet
   Design System & Component Library
   ============================================ */

/* ===== CSS Variables ===== */
:root {
  --color-primary: #0a1e3f;
  --color-primary-light: #1a3a6b;
  --color-accent: #1565c0;
  --color-accent-light: #2196f3;
  --color-gold: #f5a623;
  --color-gold-dark: #d4880f;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-dark: #0a1e3f;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-text-white: #ffffff;
  --color-border: #e2e8f0;
  --color-success: #10b981;
  --color-danger: #ef4444;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.10);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.15);
  --shadow-xl: 0 24px 60px rgba(0,0,0,0.20);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --container-max: 1280px;
  --header-height: 72px;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  letter-spacing: 0.3px;
  white-space: nowrap;
}

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

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

.btn-outline {
  border: 2px solid var(--color-accent);
  color: var(--color-accent);
  background: transparent;
}
.btn-outline:hover {
  background: var(--color-accent);
  color: #fff;
  transform: translateY(-2px);
}

.btn-white {
  background: #fff;
  color: var(--color-primary);
}
.btn-white:hover {
  background: var(--color-bg-alt);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ===== Header / Navigation ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(10, 30, 63, 0.95);
  backdrop-filter: blur(12px);
  z-index: 1000;
  transition: var(--transition);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.site-header.scrolled {
  background: rgba(10, 30, 63, 0.98);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.5px;
}

.logo-mark {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-text .logo-name { font-size: 1.05rem; font-weight: 700; }
.logo-text .logo-sub { font-size: 0.7rem; font-weight: 400; opacity: 0.7; letter-spacing: 1px; }

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

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  color: rgba(255,255,255,0.85);
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: pointer;
}

.nav-link:hover, .nav-link.active {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

.nav-link .caret {
  font-size: 0.7rem;
  transition: var(--transition);
}

.nav-item:hover .caret { transform: rotate(180deg); }

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 100;
}

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

.dropdown-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  color: var(--color-text);
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.dropdown-link:hover {
  background: var(--color-bg-alt);
  color: var(--color-accent);
  padding-left: 18px;
}

.dropdown-link .cat-icon {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.dropdown-link .cat-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.menu-toggle span {
  width: 24px;
  height: 2.5px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}
.menu-toggle.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  /* background: url(../images/banner1.png); */
  background: linear-gradient(135deg, #0a1e3f 0%, #0d2d5e 40%, #1565c0 100%);
  z-index: -2;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(21,101,192,0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 30%, rgba(245,166,35,0.15) 0%, transparent 40%);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 80%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  padding: 120px 0 80px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 28px;
  backdrop-filter: blur(8px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-gold);
  animation: pulse 2s ease-in-out infinite;
}

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

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--color-gold) 0%, #ffd54f 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 40px;
  max-width: 580px;
  line-height: 1.7;
}

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

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.hero-stat .stat-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-gold);
  line-height: 1;
}
.hero-stat .stat-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-top: 6px;
}

/* ===== Section General ===== */
.section {
  padding: 100px 0;
}

.section-alt { background: var(--color-bg-alt); }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(21,101,192,0.08);
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-radius: 50px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-light);
  max-width: 640px;
  margin: 0 auto;
}

.section-header.left { text-align: left; }
.section-header.left .section-subtitle { margin: 0; }

/* ===== About Intro Section ===== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-intro-text h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 20px;
  line-height: 1.3;
}

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

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 32px;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.about-feature .icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(21,101,192,0.1) 0%, rgba(245,166,35,0.1) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.about-feature .text { font-size: 0.9rem; }
.about-feature .text strong { display: block; color: var(--color-primary); margin-bottom: 2px; }
.about-feature .text span { color: var(--color-text-light); font-size: 0.82rem; }

.about-intro-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  /* background: linear-gradient(135deg, #0a1e3f 0%, #1565c0 100%); */
  background: url(../images/zktchangfang.png);
}

.about-intro-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: #0d366f69;
  background-size: 40px 40px;
}

.about-intro-visual .visual-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-align: center;
  padding: 40px;
}

.about-intro-visual .visual-content .big-num {
  font-size: 5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-gold) 0%, #ffd54f 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.about-intro-visual .visual-content .big-label {
  font-size: 1.1rem;
  margin-top: 12px;
  opacity: 0.8;
}

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

.category-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--color-border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-gold) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

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

.category-card:hover::before { transform: scaleX(1); }

.category-card .cat-num {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-bg-alt);
  line-height: 1;
}

.category-card .cat-icon-box {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(21,101,192,0.08) 0%, rgba(245,166,35,0.08) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.category-card .cat-icon-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.category-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

.category-card .cat-desc {
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.category-card .cat-count {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 600;
  position: relative;
  z-index: 1;
}

.category-card .cat-arrow {
  display: inline-block;
  margin-left: 4px;
  transition: var(--transition);
}

.category-card:hover .cat-arrow { transform: translateX(4px); }

/* ===== Product Grid (Listing) ===== */
.product-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
  justify-content: center;
}

.filter-btn {
  padding: 10px 22px;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 50px;
  border: 2px solid var(--color-border);
  color: var(--color-text-light);
  transition: var(--transition);
}

.filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.filter-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

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

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

.product-card .product-img {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #e8eef5 0%, #d1dce8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-card .product-img .product-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4,0,0.2,1);
}

.product-card:hover .product-img .product-image {
  transform: scale(1.06);
}

.product-card .product-img .product-icon {
  font-size: 3.5rem;
  opacity: 0.5;
}

.product-card .product-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(21,101,192,0.05) 0%, rgba(245,166,35,0.05) 100%);
  pointer-events: none;
  z-index: 1;
}

.product-card .product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  background: rgba(21,101,192,0.9);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 50px;
  z-index: 1;
}

.product-card .product-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card .product-code {
  display: inline-block;
  font-size: 1.3rem;
  color: var(--color-accent);
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  text-decoration: none;
  transition: var(--transition);
}

.product-card .product-code:hover {
  color: var(--color-accent-light);
  text-decoration: underline;
}

.product-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.product-card .product-desc {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.product-card .spec-tag {
  font-size: 0.72rem;
  padding: 3px 10px;
  background: var(--color-bg-alt);
  border-radius: 50px;
  color: var(--color-text-light);
  font-weight: 500;
}

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

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

/* ===== Application Areas ===== */
.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.app-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  color: #fff;
  cursor: pointer;
  transition: var(--transition);
}

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

.app-card .app-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.app-card .app-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,30,63,0.95) 0%, rgba(10,30,63,0.4) 60%, transparent 100%);
  z-index: -1;
}

.app-card .app-content {
  padding: 28px;
  position: relative;
  z-index: 1;
}

.app-card .app-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}

.app-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.app-card p {
  font-size: 0.85rem;
  opacity: 0.8;
  line-height: 1.6;
}

.app-bg-aviation { background:url('../images/aviation.png');background-size: cover;}
.app-bg-aerospace {  background:url('../images/aerospace.png');background-size: cover; }
.app-bg-marine {  background:url('../images/marine.png');background-size: cover; }
.app-bg-rail {  background:url('../images/rail.png');background-size: cover; }
.app-bg-construction {  background:url('../images/construction.png');background-size: cover; }
.app-bg-power {  background:url('../images/power.png');background-size: cover; }
.app-bg-telecom {  background:url('../images/telecom.png');background-size: cover; }
.app-bg-energy {  background:url('../images/energy.png');background-size: cover; }
.app-bg-oil {  background:url('../images/oil.png');background-size: cover; }

/* .app-bg-aviation::before,
.app-bg-aerospace::before,
.app-bg-marine::before,
.app-bg-rail::before,
.app-bg-construction::before,
.app-bg-power::before,
.app-bg-telecom::before,
.app-bg-energy::before,
.app-bg-oil::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 70% 30%, rgba(255,255,255,0.08) 0%, transparent 50%),
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 50px 50px;
} */

/* ===== Why Choose Us ===== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.why-card {
  text-align: center;
  padding: 0;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--color-border);
  transition: var(--transition);
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

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

.why-card.why-bg-1 {
  background-image: url("https://www.bjzkt.com/static/upload/image/20240419/1713491546349236.png");
}
.why-card.why-bg-2 {
  background-image: url("https://www.bjzkt.com/static/upload/image/20260831/1788153302538774.jpg");
}
.why-card.why-bg-3 {
  background-image: url("https://www.bjzkt.com/static/upload/other/20260831/1788153482940967.jpeg");
}
.why-card.why-bg-4 {
  background-image: url("https://www.bjzkt.com/static/upload/other/20260831/1788153680824768.jpeg");
}
.why-card.why-bg-5 {
  background-image: url("https://www.bjzkt.com/static/upload/image/20240419/1713491602538968.png");
}
.why-card.why-bg-6 {
  background-image: url("https://www.bjzkt.com/static/upload/other/20260831/1788153888474282.jpeg");
}

.why-overlay {
  background: rgba(255,255,255,0.45);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(8px);
  padding: 36px 28px;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  border-radius: var(--radius-lg);
}

.why-card:hover .why-overlay {
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.why-card h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.why-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== CTA Section ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(135deg, #0a1e3f 0%, #1565c0 100%);
  color: #fff;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 80% 50%, rgba(245,166,35,0.15) 0%, transparent 50%),
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.cta-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta-text h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.cta-text p {
  font-size: 1.05rem;
  opacity: 0.8;
}

/* ===== Footer ===== */
.site-footer {
  background: #060f24;
  color: rgba(255,255,255,0.7);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand .logo { margin-bottom: 20px; }

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 20px;
  opacity: 0.7;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 12px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--color-gold);
}

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

.footer-col ul li a {
  font-size: 0.88rem;
  transition: var(--transition);
  opacity: 0.7;
}

.footer-col ul li a:hover {
  opacity: 1;
  color: var(--color-gold);
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  margin-bottom: 14px;
  opacity: 0.7;
}

.footer-contact li .icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.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: 0.82rem;
  opacity: 0.5;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  padding: 160px 0 80px;
  background: linear-gradient(135deg, #0a1e3f 0%, #0d2d5e 50%, #1565c0 100%);
  color: #fff;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 80% 20%, rgba(245,166,35,0.15) 0%, transparent 40%),
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 50px 50px;
}

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

.page-banner h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.page-banner .breadcrumb {
  font-size: 0.9rem;
  opacity: 0.7;
}

.page-banner .breadcrumb a:hover { color: var(--color-gold); }

/* ===== About Page ===== */
.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-story-text h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 20px;
}

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

#aviation .about-story-visual {
  background: url('../images/aviation.png');
  background-size: cover;
}

#aerospace .about-story-visual {
  background: url('../images/aerospace.png') center;
  background-size: cover;
}

#marine .about-story-visual {
  background: url('../images/marine.png') center;
  background-size: cover;
}

#rail .about-story-visual {
  background: url('../images/rail.png') center;
  background-size: cover;
}

#construction .about-story-visual {
  background: url('../images/construction.png') center;
  background-size: cover;
}

#power .about-story-visual {
  background: url('../images/power.png') center;
  background-size: cover;
}

#telecom .about-story-visual {
  background: url('../images/telecom.png') center;
  background-size: cover;
}

#energy .about-story-visual {
  background: url('../images/energy.png') center;
  background-size: cover;
}

#oil .about-story-visual {
  background: url('../images/oil.png') center;
  background-size: cover;
}

.about-story-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1;
  /* background: linear-gradient(135deg, #0a1e3f 0%, #1565c0 100%); */
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* .about-story-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 30% 30%, rgba(245,166,35,0.2) 0%, transparent 50%),
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
} */
#aboutStory .year-block {
	background:url('../images/zktchangfang.png'); 
}
.about-story-visual .year-block {
  text-align: center;
  color: #fff;
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  /* background: #1565c082; */
  width: 100%;
  height: 100%;
}

.about-story-visual .year-block .year {
  font-size: 5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-gold) 0%, #ffd54f 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.about-story-visual .year-block .year-text {
  font-size: 1.1rem;
  margin-top: 12px;
  opacity: 0.8;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 40px 50px 0;
}

.timeline-item:nth-child(even) {
  left: 50%;
  padding: 0 0 50px 40px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  right: -7px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-item:nth-child(even)::before {
  left: -7px;
  right: auto;
}

.timeline-item .tl-year {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.timeline-item .tl-content {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.timeline-item .tl-content h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.timeline-item .tl-content p {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

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

.value-card {
  text-align: center;
  padding: 36px 24px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

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

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

.value-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.value-card p {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* Honors */
.honors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.honor-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

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

.honor-card .honor-img {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #e8eef5 0%, #d1dce8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  opacity: 0.4;
}

.honor-card .honor-body { padding: 20px; }
.honor-card .honor-body h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}
.honor-card .honor-body p {
  font-size: 0.82rem;
  color: var(--color-text-light);
}

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

.contact-info-card {
  background: linear-gradient(135deg, #0a1e3f 0%, #1565c0 100%);
  border-radius: var(--radius-lg);
  padding: 40px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.contact-info-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 80% 20%, rgba(245,166,35,0.15) 0%, transparent 50%);
}

.contact-info-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
  position: relative;
}

.contact-info-card > p {
  opacity: 0.8;
  margin-bottom: 32px;
  position: relative;
  font-size: 0.9rem;
}

.contact-info-list {
  position: relative;
  z-index: 1;
}

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

.contact-info-list .ci-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-info-list .ci-text { flex: 1; }
.contact-info-list .ci-label {
  font-size: 0.78rem;
  opacity: 0.6;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}
.contact-info-list .ci-value {
  font-size: 0.95rem;
  font-weight: 500;
}

.contact-form-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--color-border);
}

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

.contact-form-card > p {
  color: var(--color-text-light);
  margin-bottom: 32px;
  font-size: 0.9rem;
}

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

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

.form-group label .required { color: var(--color-danger); }

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.9rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  font-family: inherit;
  background: var(--color-bg-alt);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(21,101,192,0.1);
}

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

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

/* Map */
.map-section {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: url('../images/map.png');
}

.map-placeholder {
  aspect-ratio: 21/9;
  background: linear-gradient(135deg, #e8eef500 0%, #d1dce81c 100%)
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.map-placeholder .map-content {
  text-align: center;
  color: var(--color-text-light);
}

.map-placeholder .map-pin {
  font-size: 3rem;
  margin-bottom: 12px;
}

/* ===== 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);
}

.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }

/* ===== Scroll to top ===== */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
  box-shadow: var(--shadow-md);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover { background: var(--color-primary); }

/* ===== News Page ===== */
.news-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
  justify-content: center;
}

.news-featured {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 48px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.news-featured-img {
  min-height: 320px;
  background: url('../images/news-gfxxz1.jpg');
  /* background: linear-gradient(135deg, #0a1e3f 0%, #1565c0 100%); */
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background-size: cover;
}

.news-featured-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 30% 40%, rgba(245,166,35,0.15) 0%, transparent 50%),
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.news-featured-img .nf-icon {
  font-size: 4rem;
  position: relative;
  z-index: 1;
  opacity: 0.5;
}

.news-featured-body {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.news-featured-body .nf-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: rgba(245,166,35,0.12);
  color: var(--color-gold-dark);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50px;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  align-self: flex-start;
}

.news-featured-body h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 12px;
  line-height: 1.4;
}

.news-featured-body .nf-date {
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.news-featured-body .nf-excerpt {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 24px;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.news-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

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

.news-card .news-img {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, #e8eef5 0%, #d1dce8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.news-card .news-img .news-icon {
  font-size: 3rem;
  opacity: 0.4;
}

.news-card .news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.news-card .news-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 50px;
  z-index: 1;
}

.news-badge.company { background: rgba(21,101,192,0.9); color: #fff; }
.news-badge.industry { background: rgba(245,166,35,0.9); color: var(--color-primary); }

.news-card .news-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card .news-date {
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.news-card .news-excerpt {
  font-size: 0.86rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

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

/* Article Detail Page */
.article-detail {
  max-width: 820px;
  margin: 0 auto;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.article-meta .am-tag {
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50px;
}

.article-meta .am-tag.company { background: rgba(21,101,192,0.1); color: var(--color-accent); }
.article-meta .am-tag.industry { background: rgba(245,166,35,0.12); color: var(--color-gold-dark); }

.article-meta .am-date {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.article-detail h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 24px;
  line-height: 1.3;
}

.article-hero-img {
  aspect-ratio: 21/9;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #0a1e3f 0%, #1565c0 100%);
  margin-bottom: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.article-hero-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 40% 40%, rgba(245,166,35,0.15) 0%, transparent 50%),
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.article-hero-img .ahi-icon {
  font-size: 4rem;
  opacity: 0.4;
  position: relative;
  z-index: 1;
}

.article-content p {
  font-size: 1rem;
  color: var(--color-text);
  line-height: 1.9;
  margin-bottom: 20px;
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 32px 0 16px;
}

.article-content ul {
  margin-bottom: 20px;
  padding-left: 0;
}

.article-content ul li {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.8;
  padding-left: 24px;
  position: relative;
  margin-bottom: 8px;
}

.article-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.article-nav {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.article-nav a {
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
  color: var(--color-text-light);
  transition: var(--transition);
  max-width: 48%;
}

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

.article-nav a .an-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
  opacity: 0.6;
}

.article-nav a .an-title {
  font-weight: 600;
  color: var(--color-primary);
}

.article-nav a.an-next { text-align: right; }

/* ===== Article Gallery (multi-image) ===== */
.article-hero-img.has-image {
  background: none;
  aspect-ratio: auto;
}
.article-hero-img.has-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  display: block;
}
.article-hero-img.has-image::before { display: none; }

.article-gallery {
  margin-bottom: 36px;
}
.ag-main {
  aspect-ratio: 16/9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-alt);
  margin-bottom: 12px;
}
.ag-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.ag-thumbs {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.ag-thumb {
  flex: 0 0 120px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  background: var(--color-bg-alt);
}
.ag-thumb:hover { border-color: var(--color-accent-light); }
.ag-thumb.active { border-color: var(--color-accent); }
.ag-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ===== Article content extras ===== */
.article-content h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 24px 0 12px;
}
.article-content a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px dashed var(--color-accent-light);
  transition: var(--transition);
}
.article-content a:hover {
  color: var(--color-accent-light);
  border-bottom-style: solid;
}
.article-content strong {
  font-weight: 700;
  color: var(--color-primary);
}

/* ===== Nav Search Button ===== */
.nav-search-btn {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  padding: 6px 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: var(--transition);
  flex-shrink: 0;
}
.nav-search-btn:hover {
  background: rgba(255,255,255,0.15);
}
.nav-search-btn svg {
  width: 20px;
  height: 20px;
}

/* ===== Search Overlay ===== */
.search-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 60px;
  overflow-y: auto;
}
.search-overlay.open {
  display: flex;
  animation: fadeIn 0.2s ease;
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.search-modal {
  width: 90%;
  max-width: 720px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  overflow: hidden;
  margin-bottom: 60px;
}
.search-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid #eee;
}
.search-input-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  background: #f5f5f5;
  border-radius: 8px;
  padding: 8px 14px;
  border: 2px solid transparent;
  transition: border-color 0.2s;
}
.search-input-wrap:focus-within {
  border-color: var(--color-accent);
  background: #fff;
}
.search-icon-svg {
  color: #888;
  flex-shrink: 0;
}
.search-input {
  flex: 1;
  border: none;
  background: none;
  outline: none;
  font-size: 1rem;
  color: #333;
  font-family: inherit;
}
.search-input::placeholder {
  color: #aaa;
}
.search-clear {
  background: none;
  border: none;
  font-size: 1.4rem;
  color: #aaa;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
  display: none;
}
.search-input-wrap:has(input:not(:placeholder-shown)) .search-clear {
  display: block;
}
.search-close {
  background: none;
  border: none;
  color: #666;
  font-size: 0.85rem;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 6px;
  transition: var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}
.search-close:hover {
  background: #f0f0f0;
  color: #333;
}

/* Search Results */
.search-results {
  display: none;
  max-height: 500px;
  overflow-y: auto;
}
.search-results.active {
  display: block;
}
.search-result-item {
  display: flex;
  gap: 14px;
  padding: 14px 20px;
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid #f0f0f0;
  transition: background 0.15s;
}
.search-result-item:hover {
  background: #f8f8f8;
}
.sr-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  display: flex;
  align-items: flex-start;
  padding-top: 2px;
}
.sr-body {
  flex: 1;
  min-width: 0;
}
.sr-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-weight: 600;
  font-size: 0.95rem;
  color: #222;
}
.sr-code {
  font-size: 0.8rem;
  color: var(--color-accent);
  background: rgba(0,120,212,0.08);
  padding: 1px 8px;
  border-radius: 4px;
}
.sr-desc {
  font-size: 0.82rem;
  color: #666;
  margin: 4px 0 6px;
  line-height: 1.4;
}
.sr-meta {
  display: flex;
  gap: 8px;
  align-items: center;
}
.sr-type {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #888;
  font-weight: 600;
}
.sr-cat {
  font-size: 0.72rem;
  color: #aaa;
}
.search-result-item mark {
  background: rgba(255,213,79,0.4);
  color: inherit;
  border-radius: 2px;
  padding: 0 1px;
}
.search-no-result {
  padding: 40px 20px;
  text-align: center;
  color: #999;
  font-size: 0.95rem;
}
.search-more {
  padding: 12px 20px;
  text-align: center;
  color: #999;
  font-size: 0.82rem;
  border-top: 1px solid #f0f0f0;
}

/* Search Suggestions */
.search-suggestions {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.search-results.active ~ .search-suggestions {
  display: none;
}
.ss-label {
  font-size: 0.78rem;
  color: #aaa;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.ss-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.ss-tag {
  background: #f5f5f5;
  border: 1px solid #e0e0e0;
  border-radius: 20px;
  padding: 6px 16px;
  font-size: 0.82rem;
  color: #555;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}
.ss-tag:hover {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .about-intro { grid-template-columns: 1fr; gap: 40px; }
  .about-story { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
}

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

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-primary);
    padding: 20px;
    gap: 4px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
  }

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

  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: rgba(255,255,255,0.05);
    margin: 0;
    padding: 4px;
  }

  .dropdown-link { color: rgba(255,255,255,0.7); }
  .dropdown-link:hover { color: #fff; background: rgba(255,255,255,0.1); }

  .menu-toggle { display: flex; }

  .section { padding: 60px 0; }
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1rem; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stat .stat-num { font-size: 1.8rem; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }

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

  .timeline::before { left: 20px; }
  .timeline-item { width: 100%; padding: 0 0 40px 50px; }
  .timeline-item:nth-child(even) { left: 0; padding: 0 0 40px 50px; }
  .timeline-item::before { left: 13px; right: auto; }

  .cta-inner { flex-direction: column; text-align: center; }

  .about-features { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .news-featured { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .app-card { min-height: 280px; }
  .app-card .app-content { padding: 20px; }
  .news-featured-img { min-height: 220px; }
  .article-nav { flex-direction: column; }
  .article-nav a { max-width: 100%; }
  .article-nav a.an-next { text-align: left; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero { min-height: 90vh; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .product-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: 1fr; }
}

/* ============================================
   Product Detail Page
   ============================================ */

/* Breadcrumb */
.pd-banner {
  padding: 130px 0 50px;
}

.pd-banner h1 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 10px;
}

/* Product Detail Hero */
.product-detail-hero {
  padding: 60px 0 40px;
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, #ffffff 100%);
}

.pd-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}

/* Product Image Gallery */
.pd-gallery {
  position: relative;
}

/* Product Image Area */
.pd-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #f0f4f8 0%, #e2e8f0 100%);
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.pd-image-wrap .pd-main-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 2;
  animation: pd-img-fade-in 0.5s ease;
}

@keyframes pd-img-fade-in {
  from { opacity: 0; transform: scale(1.03); }
  to { opacity: 1; transform: scale(1); }
}

.pd-image-wrap .pd-icon {
  font-size: 8rem;
  opacity: 0.85;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,0.15));
  transition: transform 0.6s cubic-bezier(0.4,0,0.2,1);
  z-index: 1;
}

.pd-image-wrap:hover .pd-icon { transform: scale(1.1); }

.pd-image-wrap.has-image .pd-icon { display: none; }

/* Thumbnail Strip */
.pd-thumbnails {
  display: flex;
  gap: 12px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.pd-thumb {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid var(--color-border);
  background: linear-gradient(135deg, #f0f4f8 0%, #e2e8f0 100%);
  transition: var(--transition);
  position: relative;
  flex-shrink: 0;
}

.pd-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.pd-thumb:hover {
  border-color: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.pd-thumb.active {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(21,101,192,0.2), var(--shadow-md);
}

.pd-thumb .thumb-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2rem;
  opacity: 0.6;
}

.pd-thumb .thumb-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 3px 4px;
  font-size: 0.6rem;
  font-weight: 600;
  text-align: center;
  color: #fff;
  background: linear-gradient(transparent, rgba(0,0,0,0.65));
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.pd-image-wrap .pd-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  padding: 6px 16px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: 50px;
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.pd-image-wrap .pd-standard {
  position: absolute;
  bottom: 20px;
  right: 20px;
  padding: 8px 16px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background: rgba(10,30,63,0.85);
  color: #fff;
  backdrop-filter: blur(8px);
}

/* Product Info */
.pd-info { padding-top: 8px; }

.pd-category-tag {
  display: inline-block;
  padding: 5px 14px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  border-radius: 50px;
  background: rgba(21,101,192,0.1);
  color: var(--color-accent);
  margin-bottom: 16px;
}

.pd-title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 12px;
}

.pd-code {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  font-size: 3rem;
  font-weight: bold;
  letter-spacing: 1px;
  border-radius: var(--radius-sm);
  color: #1565c0;
  margin-bottom: 20px;
}

.pd-code::before {
  content: "CODE";
  font-size: 0.65rem;
  font-family: var(--font-sans);
  letter-spacing: 1.5px;
  opacity: 0.6;
}

.pd-appearance {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.pd-appearance strong {
  color: var(--color-text);
  font-weight: 600;
}

.pd-intro-text {
  font-size: 1rem;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 28px;
}

/* CTA buttons */
.pd-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.pd-actions .btn {
  padding: 14px 32px;
  font-size: 0.92rem;
  font-weight: 600;
}

/* Quick Stats */
.pd-quick-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 24px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.pd-quick-stat {
  text-align: center;
}

.pd-quick-stat .stat-icon {
  font-size: 1.8rem;
  margin-bottom: 6px;
}

.pd-quick-stat .stat-label {
  font-size: 0.72rem;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.pd-quick-stat .stat-value {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* Product Detail Sections */
.pd-section {
  padding: 50px 0;
  border-top: 1px solid var(--color-border);
}

.pd-section:first-of-type { border-top: none; }

.pd-section-header {
  margin-bottom: 32px;
}

.pd-section-header .section-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-accent);
  display: block;
  margin-bottom: 8px;
}

.pd-section-header h2 {
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  font-weight: 700;
  color: var(--color-primary);
}

/* Specs Table */
.pd-specs-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.pd-specs-table tr {
  transition: background 0.2s;
}

.pd-specs-table tr:hover { background: var(--color-bg-alt); }

.pd-specs-table tr:nth-child(even) { background: var(--color-bg-alt); }
.pd-specs-table tr:nth-child(even):hover { background: #eef2f7; }

.pd-specs-table td {
  padding: 16px 24px;
  font-size: 0.92rem;
  border-bottom: 1px solid var(--color-border);
}

.pd-specs-table tr:last-child td { border-bottom: none; }

.pd-specs-table .spec-label {
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
  width: 35%;
  background: rgba(10,30,63,0.02);
}

.pd-specs-table .spec-value {
  color: var(--color-text);
  font-weight: 500;
}

/* Features List */
.pd-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.pd-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px 24px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.pd-feature-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.pd-feature-item .check-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
}

.pd-feature-item .feature-text {
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.6;
  font-weight: 500;
}

/* Applications Section */
.pd-applications {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pd-app-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  transition: var(--transition);
}

.pd-app-tag:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* Related Products */
.pd-related {
  background: var(--color-bg-alt);
  padding: 60px 0;
}

.pd-related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.pd-related-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
  cursor: pointer;
}

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

.pd-related-card .rc-img {
  aspect-ratio: 4/3;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 14px;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pd-related-card .rc-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.pd-related-card:hover .rc-img img {
  transform: scale(1.05);
}

.pd-related-card .rc-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
  display: block;
}

.pd-related-card .rc-code {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-accent);
  font-family: 'Courier New', monospace;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.pd-related-card .rc-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.pd-related-card .rc-desc {
  font-size: 0.82rem;
  color: var(--color-text-light);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Purchasing Process Section */
.pd-process-section {
  padding: 60px 0;
  background: linear-gradient(180deg, #f0f7f5 0%, #e8f4f0 100%);
}

.pd-process-header {
  text-align: center;
  margin-bottom: 48px;
}

.pd-process-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.pd-process-sub {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #2a9d8f;
}

.pd-process-flow {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

.pd-process-line {
  position: absolute;
  top: -10px;
  left: 0;
  width: 100%;
  height: 60px;
  z-index: 0;
  pointer-events: none;
}

.pd-process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}

.pd-step-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 20px 28px;
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(42,157,143,0.15);
  transition: var(--transition);
  position: relative;
}

.pd-step-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #2a9d8f, #4ecdc4);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.pd-step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: #2a9d8f;
}

.pd-step-icon {
  font-size: 2.4rem;
  margin-bottom: 14px;
  line-height: 1;
  filter: drop-shadow(0 2px 4px rgba(42,157,143,0.2));
}

.pd-step-number {
  font-size: 1.4rem;
  font-weight: 800;
  color: #2a9d8f;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.pd-step-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.5;
}

/* Our Clients Section */
.pd-clients-section {
  padding: 60px 0;
  background: var(--color-bg-alt);
}

.pd-clients-header {
  text-align: center;
  margin-bottom: 40px;
}

.pd-clients-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.pd-clients-img {
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  background: #fff;
}

.pd-clients-img img,
.pd-extra-img {
  width: 100%;
  height: auto;
  display: block;
}

/* Responsive */
@media (max-width: 768px) {
  .pd-process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .pd-process-line { display: none; }
}

@media (max-width: 480px) {
  .pd-process-steps {
    grid-template-columns: 1fr;
  }
  .pd-step-card { padding: 28px 16px 20px; }
  .pd-step-icon { font-size: 2rem; }
}

/* Contact Module */
.pd-contact-section {
  padding: 60px 0;
}

.pd-contact-box {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
  padding: 48px;
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, #eef2f7 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.pd-contact-left {
  position: relative;
}

.pd-contact-left::after {
  content: "";
  position: absolute;
  right: -24px;
  top: 10%;
  bottom: 10%;
  width: 1px;
  background: var(--color-border);
}

.pd-contact-tag {
  display: inline-block;
  padding: 5px 14px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  border-radius: 50px;
  background: rgba(21,101,192,0.1);
  color: var(--color-accent);
  margin-bottom: 16px;
}

.pd-contact-left h2 {
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: 12px;
}

.pd-contact-left p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.pd-contact-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pd-contact-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

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

.pd-contact-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  color: #fff;
  box-shadow: 0 4px 12px rgba(21,101,192,0.3);
}

.pd-contact-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.pd-contact-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-light);
}

.pd-contact-info a {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  transition: var(--transition);
}

.pd-contact-info a:hover {
  color: var(--color-accent);
}

/* Responsive - Contact Module */
@media (max-width: 900px) {
  .pd-contact-box {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px 24px;
  }
  .pd-contact-left::after { display: none; }
}

@media (max-width: 480px) {
  .pd-contact-card {
    padding: 16px;
    gap: 14px;
  }
  .pd-contact-icon {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
  }
  .pd-contact-info a { font-size: 0.95rem; }
}

/* CTA Banner */
.pd-cta-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  padding: 60px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.pd-cta-banner::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60"><circle cx="30" cy="30" r="1" fill="rgba(255,255,255,0.05)"/></svg>');
  opacity: 0.6;
}

.pd-cta-banner .container { position: relative; z-index: 1; }

.pd-cta-banner h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.pd-cta-banner p {
  font-size: 1.05rem;
  opacity: 0.9;
  margin-bottom: 28px;
}

.pd-cta-banner .btn {
  background: var(--color-gold);
  color: var(--color-primary);
  font-weight: 700;
  padding: 16px 40px;
  font-size: 1rem;
}

.pd-cta-banner .btn:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Not Found State */
.pd-not-found {
  text-align: center;
  padding: 100px 20px;
}

.pd-not-found .nf-icon {
  font-size: 5rem;
  margin-bottom: 24px;
  opacity: 0.3;
}

.pd-not-found h2 {
  font-size: 1.6rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.pd-not-found p {
  color: var(--color-text-light);
  margin-bottom: 28px;
}

/* Loading state */
.pd-loading {
  text-align: center;
  padding: 120px 20px;
  color: var(--color-text-light);
}

.pd-loading .spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  margin: 0 auto 24px;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Responsive - Product Detail */
@media (max-width: 900px) {
  .pd-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .pd-image-wrap { min-height: 320px; }
  .pd-thumb { width: 64px; height: 64px; }
  .pd-quick-stats { grid-template-columns: 1fr; gap: 12px; }
  .pd-quick-stat {
    display: flex;
    align-items: center;
    gap: 12px;
    text-align: left;
  }
  .pd-quick-stat .stat-icon { margin-bottom: 0; }
}

@media (max-width: 600px) {
  .pd-actions { flex-direction: column; }
  .pd-actions .btn { width: 100%; justify-content: center; }
  .pd-features-grid { grid-template-columns: 1fr; }
  .pd-specs-table td { padding: 12px 16px; font-size: 0.85rem; }
  .pd-specs-table .spec-label { width: 40%; }
  .pd-related-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
}

@media (max-width: 400px) {
  .pd-related-grid { grid-template-columns: 1fr; }
}