/* ============================================================
   AIBot Company Website - Complete Styles
   ============================================================ */

/* --- CSS Variables --- */
:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #0d1321;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --text-primary: #ffffff;
  --text-secondary: #8892b0;
  --text-muted: #5a6480;
  --accent-cyan: #00d4ff;
  --accent-purple: #7c3aed;
  --accent-blue: #3b82f6;
  --gradient-primary: linear-gradient(135deg, #00d4ff, #7c3aed);
  --gradient-secondary: linear-gradient(135deg, #7c3aed, #3b82f6);
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
  --shadow-card: 0 4px 30px rgba(0, 0, 0, 0.3);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

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

/* --- Section --- */
.section {
  padding: 120px 0;
  position: relative;
}

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

.section-header {
  text-align: center;
  margin-bottom: 80px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 16px;
  padding: 6px 16px;
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 20px;
  background: rgba(0, 212, 255, 0.05);
}

.section-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #fff 0%, #8892b0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: var(--transition);
  padding: 16px 0;
}

.nav.scrolled {
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  padding: 10px 0;
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
  z-index: 1001;
}

.logo-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
  transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 6px 14px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}

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

.lang-option { transition: color var(--transition); }
.lang-option.active { color: var(--accent-cyan); }
.lang-divider { opacity: 0.3; }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* --- Hero --- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 212, 255, 0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 80%, rgba(124, 58, 237, 0.06) 0%, transparent 50%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.05);
  margin-bottom: 32px;
  margin-top: 35px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(0, 212, 255, 0); }
}

.hero-title {
  font-size: clamp(40px, 8vw, 72px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #ffffff 0%, #00d4ff 50%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(16px, 2.5vw, 20px);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 36px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-outline:hover {
  border-color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.05);
  transform: translateY(-2px);
}

/* --- Scroll Indicator --- */
.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 2;
  color: var(--text-muted);
  font-size: 10px;
  letter-spacing: 2px;
}

.scroll-mouse {
  width: 22px;
  height: 34px;
  border: 2px solid var(--text-muted);
  border-radius: 11px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-wheel {
  width: 3px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 2px;
  animation: scroll-wheel 1.5s ease-in-out infinite;
}

@keyframes scroll-wheel {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(10px); opacity: 0; }
}

/* --- Reveal Animation --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

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

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition);
}

.product-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.product-card:hover::before { opacity: 1; }

.product-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: rgba(0, 212, 255, 0.08);
  color: var(--accent-cyan);
  margin-bottom: 24px;
  transition: all var(--transition);
}

.product-card:hover .product-icon {
  background: rgba(0, 212, 255, 0.15);
  transform: scale(1.05);
}

.product-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.product-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--accent-cyan);
  transition: gap var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

/* --- Business --- */
.biz-list {
  display: flex;
  flex-direction: column;
  gap: 60px;
}

.biz-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.biz-reverse .biz-visual { order: 2; }
.biz-reverse .biz-content { order: 1; }

.biz-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.biz-icon-wrap {
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--accent-cyan);
  transition: all var(--transition);
}

.biz-item:hover .biz-icon-wrap {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow);
}

.biz-stat {
  font-size: 48px;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.biz-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.biz-content { position: relative; }

.biz-num {
  font-size: 80px;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.03);
  position: absolute;
  top: -30px;
  left: -10px;
  line-height: 1;
  pointer-events: none;
}

.biz-content h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
}

.biz-content p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

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

.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}

.tech-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.tech-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: rgba(124, 58, 237, 0.08);
  color: var(--accent-purple);
  transition: all var(--transition);
}

.tech-card:hover .tech-icon {
  background: rgba(124, 58, 237, 0.15);
  color: var(--accent-cyan);
}

.tech-card h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}

.tech-card p {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.7;
}

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

.honor-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  transition: all var(--transition);
}

.honor-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 215, 0, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 4px 30px rgba(255, 215, 0, 0.08);
}

.honor-badge {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 215, 0, 0.06);
  color: #fbbf24;
  transition: all var(--transition);
}

.honor-card:hover .honor-badge {
  background: rgba(255, 215, 0, 0.12);
  transform: scale(1.1) rotate(-10deg);
}

.honor-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

/* --- Honors Button --- */
.honors-more {
  text-align: center;
  margin-top: 36px;
}

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

.honor-img-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.honor-img-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 215, 0, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 4px 30px rgba(255, 215, 0, 0.08);
}

.honor-img-card img {
  max-width: 100%;
  max-height: 400px;
  object-fit: contain;
  cursor: pointer;
}

/* --- Lightbox --- */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 4px;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 32px;
  color: #fff;
  font-size: 40px;
  font-weight: 300;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1;
  transition: opacity 0.2s;
  line-height: 1;
}

.lightbox-close:hover {
  opacity: 0.7;
}

@media (max-width: 768px) {
  .honors-gallery {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
  }
  .honor-img-card {
    padding: 16px;
  }
  .honor-img-card img {
    max-height: 280px;
  }
}

@media (max-width: 480px) {
  .honors-gallery {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .honor-img-card {
    padding: 12px;
  }
  .honor-img-card img {
    max-height: 200px;
  }
}

/* --- Partners --- */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 2px;
  background: var(--border-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.partner-logo {
  background: var(--bg-card);
  padding: 24px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  min-height: 100px;
}

.partner-logo img {
  max-width: 100%;
  max-height: 80px;
  object-fit: contain;
  transition: all var(--transition);
}

.partner-logo:hover {
  background: var(--bg-card-hover);
}

.partner-logo:hover img {
  transform: scale(1.08);
}

/* --- About --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

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

.about-values {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
}

.value-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
}

.value-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

/* --- Timeline --- */
.timeline-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 32px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 2px solid var(--border-color);
  padding-left: 0;
}

.tl-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding-bottom: 28px;
  position: relative;
  padding-left: 28px;
}

.tl-item:last-child { padding-bottom: 0; }

.tl-dot {
  position: absolute;
  left: -6px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
}

.tl-year {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-cyan);
  min-width: 36px;
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}

.tl-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px 20px;
  flex: 1;
  transition: all var(--transition);
}

.tl-item:hover .tl-card {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.tl-card h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.tl-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Products Detail --- */
.prod-detail-grid {
  display: flex;
  flex-direction: column;
  gap: 60px;
}

.prod-detail-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 48px;
  transition: all var(--transition);
}

.prod-detail-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.prod-reverse .prod-detail-visual { order: 2; }
.prod-reverse .prod-detail-info { order: 1; }

.prod-detail-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.prod-placeholder {
  width: 200px;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: rgba(0, 212, 255, 0.03);
  border: 2px dashed var(--border-color);
  color: var(--text-muted);
  transition: all var(--transition);
}

.prod-detail-card:hover .prod-placeholder {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.prod-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--accent-purple);
  margin-bottom: 12px;
}

.prod-detail-info h3 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 14px;
}

.prod-detail-info > p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.prod-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.prod-features li {
  font-size: 13px;
  color: var(--text-secondary);
  padding-left: 18px;
  position: relative;
}

.prod-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 60px;
  align-items: start;
}

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

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
  padding: 14px 18px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: all var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.08);
}

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

.btn-submit {
  align-self: flex-start;
  padding: 14px 48px;
  margin-top: 8px;
}

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

.info-card {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.info-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.info-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(0, 212, 255, 0.08);
  color: var(--accent-cyan);
}

.info-card h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.info-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- Footer --- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 80px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 16px;
  line-height: 1.6;
}

.footer-links h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-links a {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--accent-cyan); }

.footer-contact-item {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

/* --- Page Hero (products page) --- */
.page-hero {
  position: relative;
  height: 35vh;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg-primary);
  padding-bottom: 20px;
  padding-top: 160px;
}

/* --- Category Navigation --- */
.cat-nav-section {
  position: sticky;
  top: 70px;
  z-index: 100;
  background: rgba(10, 14, 23, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 14px 0;
  overflow: hidden;
}

.cat-nav-section::before,
.cat-nav-section::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 32px;
  z-index: 2;
  pointer-events: none;
}

.cat-nav-section::before {
  left: 0;
  background: linear-gradient(to right, rgba(10,14,23,0.95), transparent);
}

.cat-nav-section::after {
  right: 0;
  background: linear-gradient(to left, rgba(10,14,23,0.95), transparent);
}

.cat-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 24px 4px;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
}

@media (min-width: 1025px) {
  .cat-nav {
    flex-wrap: wrap;
    overflow-x: visible;
  }
  .cat-nav-section::before,
  .cat-nav-section::after {
    display: none;
  }
}

.cat-nav::-webkit-scrollbar { display: none; }

.cat-link {
  flex-shrink: 0;
  padding: 8px 18px;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  white-space: nowrap;
}

.cat-link:hover,
.cat-link:target {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.06);
}

/* --- Product List (rows) --- */
.prod-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.prod-row {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 48px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 40px;
  transition: all var(--transition);
}

.prod-row:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

.prod-row-reverse {
  grid-template-columns: 1fr 360px;
}

.prod-row-reverse:hover {
  transform: translateX(-4px);
}

.prod-row-reverse .prod-row-visual { order: 2; }
.prod-row-reverse .prod-row-info { order: 1; }

.prod-row-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.prod-visual-box {
  width: 260px;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(0, 212, 255, 0.03);
  border: 2px dashed var(--border-color);
  color: var(--text-muted);
  transition: all var(--transition);
}

.prod-row:hover .prod-visual-box {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  border-style: solid;
  box-shadow: var(--shadow-glow);
}

.prod-row-info h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
}

.prod-row-info > p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 18px;
}

/* --- Product Specs Grid --- */
.prod-specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.prod-specs-center {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.spec {
  background: rgba(0, 212, 255, 0.04);
  border: 1px solid rgba(0, 212, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.spec strong {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.spec span {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

/* --- Product Highlight (Kiosk) --- */
.prod-highlight {
  display: flex;
  justify-content: center;
}

.prod-highlight-card {
  background: var(--bg-card);
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-xl);
  padding: 48px;
  text-align: center;
  max-width: 700px;
  transition: all var(--transition);
}

.prod-highlight-card:hover {
  box-shadow: var(--shadow-glow);
  background: var(--bg-card-hover);
}

.prod-hl-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(0, 212, 255, 0.08);
  color: var(--accent-cyan);
}

.prod-highlight-card h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 14px;
}

.prod-highlight-card > p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.prod-features-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 20px;
}

.prod-features-row span {
  padding: 6px 16px;
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: 16px;
  font-size: 12px;
  color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.04);
}

/* --- Accessory Grid --- */
.accessory-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.acc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 28px;
  text-align: center;
  transition: all var(--transition);
}

.acc-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.acc-icon {
  width: 180px;
  height: 180px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: rgba(124, 58, 237, 0.08);
  color: var(--accent-purple);
  transition: all var(--transition);
}

.acc-card svg { width: 80px; height: 80px; }

.acc-card:hover .acc-icon {
  background: rgba(0, 212, 255, 0.12);
  color: var(--accent-cyan);
}

.acc-card h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}

.acc-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- CTA Banner --- */
.cta-banner {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.06), rgba(124, 58, 237, 0.06));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  text-align: center;
  padding: 60px 40px;
}

.cta-content h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-content p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 28px;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .honors-grid { grid-template-columns: repeat(2, 1fr); }
  .partners-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  .about-grid { grid-template-columns: 1fr; gap: 60px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .biz-item { grid-template-columns: 1fr; gap: 40px; }
  .biz-reverse .biz-visual { order: 1; }
  .biz-reverse .biz-content { order: 2; }
  .prod-detail-card { grid-template-columns: 1fr; gap: 40px; padding: 32px; }
  .prod-reverse .prod-detail-visual { order: 1; }
  .prod-reverse .prod-detail-info { order: 2; }
  .prod-row { grid-template-columns: 1fr; gap: 32px; padding: 32px; }
  .prod-row-reverse { grid-template-columns: 1fr; }
  .prod-visual-box { width: 200px; height: 200px; }
  .prod-row-reverse .prod-row-visual { order: 1; }
  .prod-row-reverse .prod-row-info { order: 2; }
  .prod-row:hover { transform: translateY(-4px); }
  .prod-row-reverse:hover { transform: translateY(-4px); }
  .accessory-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 80px 0; }
  .section-header { margin-bottom: 50px; }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(10, 14, 23, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 32px;
    transition: right var(--transition);
    border-left: 1px solid var(--border-color);
  }

  .nav-menu.open { right: 0; }

  .menu-toggle { display: flex; }

  .products-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
  .honors-grid { grid-template-columns: 1fr 1fr; }
  .partners-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .form-row { grid-template-columns: 1fr; }
  .prod-specs { grid-template-columns: repeat(2, 1fr); }
  .accessory-grid { grid-template-columns: 1fr; }
  .prod-row { padding: 24px; }
  .prod-highlight-card { padding: 32px 24px; }
  .cat-nav-section { top: 56px; }
  .cta-banner { padding: 40px 24px; }
  .cta-content h3 { font-size: 22px; }

  .hero-title { font-size: 36px; }
  .biz-stat { font-size: 36px; }

  .prod-detail-card { padding: 24px; }
  .prod-detail-info h3 { font-size: 22px; }
  .prod-features { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .honors-grid { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); }
  .hero-cta { flex-direction: column; align-items: center; }
}

/* ============================================================
   Exhibition Hall - Video & Photo Gallery
   ============================================================ */

/* --- Featured Video --- */
#zg-featured {
  padding-top: 20px !important;
}

.featured-video {
  max-width: 864px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.featured-video:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 40px rgba(0, 212, 255, 0.12);
}

.featured-video-bg {
  width: 100%;
  aspect-ratio: 16 / 9;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
}

.featured-play-btn {
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.featured-play-btn:hover {
  transform: scale(1.15);
}

.featured-play-btn:hover svg circle {
  fill: rgba(0, 212, 255, 0.3);
}

.featured-play-btn svg circle {
  transition: fill 0.3s ease;
}

.featured-video-label {
  text-align: center;
  padding: 14px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-card);
}

/* --- Video Grid --- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition);
}

.video-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.1);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.video-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0,212,255,0.08), rgba(124,58,237,0.08));
}

.video-play-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 14, 23, 0.35);
  transition: background 0.3s ease;
}

.video-card:hover .video-play-overlay {
  background: rgba(10, 14, 23, 0.2);
}

.video-play-overlay svg {
  transition: transform 0.3s ease;
}

.video-card:hover .video-play-overlay svg {
  transform: scale(1.12);
}

.video-label {
  padding: 14px 18px;
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
  font-weight: 500;
}

/* --- Video Lightbox --- */
.video-lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.92);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.video-lightbox.active {
  opacity: 1;
  visibility: visible;
}

.video-lightbox-inner {
  width: auto;
  max-width: 75vw;
  max-height: 80vh;
}

.video-lightbox-inner video {
  max-width: 100%;
  max-height: 80vh;
  border-radius: 8px;
  outline: none;
  display: block;
  object-fit: contain;
  aspect-ratio: auto;
}

.video-lightbox-close {
  position: absolute;
  top: 20px;
  right: 32px;
  color: #fff;
  font-size: 40px;
  font-weight: 300;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1;
  transition: opacity 0.2s;
  line-height: 1;
}

.video-lightbox-close:hover {
  opacity: 0.7;
}

/* --- Product Video Gallery --- */
#productVideoGallery {
  display: grid !important;
  grid-template-columns: 1fr 1fr !important;
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

#productVideoGallery .video-card {
  max-width: 430px;
  justify-self: center;
}

#productVideoGallery .video-thumb {
  aspect-ratio: 16 / 9;
}

#productVideoGallery .video-label {
  padding: 10px 16px;
  font-size: 12px;
}

@media (max-width: 640px) {
  #productVideoGallery {
    grid-template-columns: 1fr 1fr !important;
    gap: 12px;
  }
  #productVideoGallery .video-play-overlay svg {
    width: 40px;
    height: 40px;
  }
  #productVideoGallery .video-label {
    padding: 8px 12px;
    font-size: 11px;
  }
}

/* --- Photo Grid --- */
.zg-photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.zg-photo-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  cursor: pointer;
}

.zg-photo-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.08);
}

.zg-photo-card img {
  max-width: 100%;
  max-height: 350px;
  object-fit: contain;
  border-radius: 4px;
}

@media (max-width: 768px) {
  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
  }
  .zg-photo-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 14px;
  }
  .zg-photo-card img {
    max-height: 260px;
  }
  .video-lightbox-inner {
    width: 95vw;
  }
}

@media (max-width: 480px) {
  .video-grid {
    grid-template-columns: 1fr;
  }
  .zg-photo-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .zg-photo-card {
    padding: 8px;
  }
  .zg-photo-card img {
    max-height: 200px;
  }
}