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

:root {
  --primary: #1a56db;
  --primary-dark: #1340a8;
  --primary-light: #e8effc;
  --accent: #f59e0b;
  --dark: #111827;
  --gray-900: #1f2937;
  --gray-700: #374151;
  --gray-500: #6b7280;
  --gray-300: #d1d5db;
  --gray-200: #e5e7eb;
  --gray-100: #f3f4f6;
  --white: #ffffff;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--gray-700);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: color 0.3s; }
img { max-width: 100%; display: block; }
ul,li,ol { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== ANIMATIONS ===== */
.anim-up {
  opacity: 0;
  transform: translateY(60px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.anim-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.anim-col {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.anim-col.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: box-shadow 0.3s;
}
.header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: -0.3px;
  line-height: 1.3;
}
.logo span {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--gray-500);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }
.nav-dropdown {
  position: relative;
}
.nav-dropdown > a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.nav-dropdown > a::before {
  content: '';
  display: none;
}
.nav-dropdown.has-children > a::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  position: static;
  background: none;
  transition: transform 0.3s;
}
.nav-dropdown.has-children:hover > a::after {
  width: 0;
  transform: rotate(180deg);
}
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--white);
  border-radius: 12px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
  padding: 12px 0;
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  border: 1px solid var(--gray-100);
  z-index: 100;
}
.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 8px solid var(--white);
}
.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}
.dropdown-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--gray-700);
  transition: all 0.2s;
  white-space: nowrap;
}
.dropdown-menu a::after {
  display: none;
}
.dropdown-menu a:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.dropdown-menu a .dropdown-icon {
  font-size: 16px;
  width: 20px;
  text-align: center;
}
.nav-cta {
  background: var(--primary);
  color: var(--white) !important;
  padding: 10px 24px;
  border-radius: 8px;
  font-weight: 600;
  transition: background 0.3s, transform 0.2s;
}
.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}
.nav-cta::after { display: none !important; }

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}
.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--dark);
  transition: 0.3s;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}
.hero-carousel {
  position: absolute;
  inset: 0;
}
.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.2s ease;
}
.hero-slide.active { opacity: 1; }
.hero-slide-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(17, 24, 39, 0.82) 0%, rgba(26, 86, 219, 0.45) 100%);
}
.hero-content {
  position: relative;
  z-index: 10;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: var(--white);
  max-width: 700px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
  width: fit-content;
}
.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: #34d399;
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 20px;
}
.hero h1 em {
  font-style: italic;
  color: #93c5fd;
}
.hero p {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
  max-width: 560px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.3s;
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26, 86, 219, 0.35);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.4);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.7);
}

.hero-indicators {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 10;
}
.hero-dot {
  width: 40px;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: all 0.4s;
}
.hero-dot.active {
  background: var(--white);
  width: 56px;
}

/* ===== STATS ===== */
.stats {
  background: var(--white);
  padding: 80px 0;
  border-bottom: 1px solid var(--gray-100);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat-item {
  text-align: center;
  padding: 24px;
}
.stat-number {
  font-size: 48px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 14px;
  color: var(--gray-500);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== SECTION COMMON ===== */
.section {
  padding: 100px 0;
  background: var(--white);
}
.section-gray {
  background: var(--gray-100);
}
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}
.section-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.25;
  margin-bottom: 16px;
}
.section-title em {
  font-style: italic;
  color: var(--primary);
}
.section-desc {
  font-size: 16px;
  color: var(--gray-500);
  line-height: 1.8;
}

/* ===== WHY CHOOSE US ===== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.why-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: 16px;
  padding: 36px 28px;
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
}
.why-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform 0.4s;
}
.why-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  border-color: transparent;
}
.why-card:hover::before { transform: scaleX(1); }
.why-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 24px;
}
.why-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}
.why-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-image {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;

  display: flex;
  align-items: center;
  justify-content: center;
}

.about-content h2 {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
  margin-bottom: 20px;
}
.about-content h2 em {
  font-style: italic;
  color: var(--primary);
}
.about-content > p {
  font-size: 16px;
  color: var(--gray-500);
  margin-bottom: 15px;
}
.about-list {
  margin-bottom: 32px;
}
.about-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--gray-700);
}
.about-list li::before {
  content: '';
  width: 20px;
  height: 20px;
  min-width: 20px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%231a56db' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.about-stat {
  background: var(--gray-100);
  border-radius: 12px;
  text-align: center;
}
.about-stat strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}
.about-stat span {
  font-size: 13px;
  color: var(--gray-500);
}

/* ===== PRODUCTS ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.4s;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
  border-color: transparent;
}
.product-img {
  aspect-ratio: 1;
  background: linear-gradient(135deg, #f0f4ff 0%, #e8effc 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  position: relative;
  overflow: hidden;
}
.product-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(0,0,0,0.02));
}
.product-info {
  padding: 24px;
}
.product-category {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--primary);
  margin-bottom: 8px;
}
.product-info h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
  line-height: 1.4;
}
.product-info p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
  margin-bottom: 16px;
}
.product-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s;
}
.product-link:hover { gap: 10px; }

/* ===== CTA ===== */
.cta-section {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--dark) 0%, #1e3a5f 50%, var(--primary-dark) 100%);
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: rgba(26, 86, 219, 0.15);
  top: -200px;
  right: -100px;
}
.cta-section h2 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
}
.cta-section h2 em {
  font-style: italic;
  color: #93c5fd;
}
.cta-section p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 36px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}
.btn-white {
  background: var(--white);
  color: var(--primary);
}
.btn-white:hover {
  background: var(--gray-100);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.contact-info h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 24px;
}
.contact-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--gray-100);
}
.contact-item:last-child { border-bottom: none; }
.contact-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.contact-item strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 2px;
}
.contact-item span, .contact-item a {
  font-size: 14px;
  color: var(--gray-500);
}
.contact-item a:hover { color: var(--primary); }

.contact-form {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--gray-300);
  border-radius: 10px;
  font-size: 14px;
  font-family: var(--font-sans);
  transition: border-color 0.3s;
  background: var(--white);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-submit {
  width: 100%;
  padding: 14px;
  background: var(--primary);
  color: var(--white);
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
}
.form-submit:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .logo {
  color: var(--white);
  margin-bottom: 16px;
}
.footer-brand .logo span { color: rgba(255, 255, 255, 0.5); }
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.5);
}
.footer h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
}
.footer ul li {
  margin-bottom: 10px;
}
.footer ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.3s;
}
.footer ul li a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== INNER PAGE BANNER ===== */
.page-banner {
  position: relative;
  padding: 180px 0 80px;
    background: linear-gradient(135deg, var(--dark) 0%, #1e3a5f 50%, var(--primary-dark) 100%);
  background:url('/assets/page-banner-bg.jpg') center/cover no-repeat;
  color: var(--white);
  overflow: hidden;
  margin-top: 0;
}
.page-banner::before {
     content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.25) 0%, #1340a88f 15%);    z-index: 1;
}
.page-banner::after {
  content: '';
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(147, 197, 253, 0.08);
  bottom: -140px;
  left: -80px;
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 7px 16px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
}
.page-banner h1 {
  font-family: var(--font-serif);
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 16px;
}
.page-banner h1 em {
  font-style: italic;
  color: #93c5fd;
}
.page-banner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.78);
  max-width: 600px;
  line-height: 1.8;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  background: var(--white);
  border-bottom: 1px solid var(--gray-100);
  padding: 18px 0;
}
.breadcrumb .container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-500);
}
.breadcrumb a {
  color: var(--gray-500);
  transition: color 0.3s;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span.sep {
  color: var(--gray-300);
  user-select: none;
}
.breadcrumb span.current {
  color: var(--dark);
  font-weight: 500;
}

/* ===== PAGE BODY (inner content wrapper) ===== */
.page-body { padding: 80px 0; }
.page-body.section-gray { background: var(--gray-100); }

/* ===== SINGLE PAGE CONTENT (about.html) ===== */
.single-page {
  max-width: 880px;
  margin: 0 auto;
  background: var(--white);
  border-radius: 20px;
  padding: 56px 64px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
  border: 1px solid var(--gray-100);
}
.single-page-content {
  font-size: 16px;
  color: var(--gray-700);
  line-height: 1.9;
}
.single-page-content :where(h1, h2, h3, h4) {
  color: var(--dark);
  font-weight: 700;
  margin: 1.4em 0 0.6em;
  line-height: 1.3;
}
.single-page-content h2 { font-size: 28px; font-family: var(--font-serif); }
.single-page-content h3 { font-size: 22px; }
.single-page-content p { margin-bottom: 1em; }
.single-page-content img { border-radius: 12px; margin: 1.2em 0; }
.single-page-content ul,
.single-page-content ol { margin: 1em 0 1.4em; padding-left: 24px; }
.single-page-content li { margin-bottom: 0.4em; }
.single-page-content a { color: var(--primary); text-decoration: underline; }
.single-page-content blockquote {
  border-left: 4px solid var(--primary);
  padding: 12px 24px;
  margin: 1.4em 0;
  background: var(--gray-100);
  border-radius: 0 12px 12px 0;
  font-style: italic;
  color: var(--gray-700);
}
.single-page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.4em 0;
}
.single-page-content table th,
.single-page-content table td {
  border: 1px solid var(--gray-300);
  padding: 10px 14px;
  text-align: left;
}
.single-page-content table th { background: var(--gray-100); font-weight: 600; }

/* ===== CONTACT PAGE ===== */
.contact-page-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
  align-items: start;
}
.contact-info-card {
  background: linear-gradient(135deg, var(--dark) 0%, #1e3a5f 100%);
  color: var(--white);
  border-radius: 20px;
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
}
.contact-info-card::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(26, 86, 219, 0.2);
  top: -120px;
  right: -100px;
}
.contact-info-card > * { position: relative; z-index: 2; }
.contact-info-card h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
}
.contact-info-card .info-sub {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 32px;
}
.contact-info-list .ci-item {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.contact-info-list .ci-item:last-child { border-bottom: none; }
.contact-info-list .ci-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.contact-info-list .ci-label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 4px;
}
.contact-info-list .ci-value,
.contact-info-list .ci-value a {
  font-size: 15px;
  color: var(--white);
  font-weight: 500;
  line-height: 1.5;
  word-break: break-word;
}
.contact-info-list .ci-value a:hover { color: #93c5fd; }
.contact-form-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: 20px;
  padding: 48px 40px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
}
.contact-form-card h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}
.contact-form-card .cf-sub {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 32px;
}
.contact-form-card .form-group label .req {
  color: #ef4444;
  margin-left: 2px;
}
.form-tip {
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--primary-light);
  border-radius: 10px;
  font-size: 13px;
  color: var(--primary-dark);
  line-height: 1.6;
}
.form-success-note {
  display: none;
  margin-bottom: 20px;
  padding: 14px 18px;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: 10px;
  color: #065f46;
  font-size: 14px;
}
.form-success-note.show { display: block; }

/* ===== PRODUCT LIST ===== */
.product-list-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.product-list-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: 18px;
  overflow: hidden;
  transition: all 0.4s;
  display: flex;
  flex-direction: column;
}
.product-list-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.1);
  border-color: transparent;
}
.product-list-card .pl-img {
  aspect-ratio: 1;
  overflow: hidden;
  position: relative;
  padding: 10px 10px 0;
}
.product-list-card .pl-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.product-list-card:hover .pl-img img { transform: scale(1.06); }
.product-list-card .pl-img .pl-noimg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  color: var(--primary);
  opacity: 0.35;
}
.product-list-card .pl-body {
  padding:15px 15px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-list-card .pl-tag {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--primary);
  margin-bottom: 8px;
}
.product-list-card .pl-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
  line-height: 1.4;
}
.product-list-card .pl-desc {
  font-size: 13.5px;
  color: var(--gray-500);
  line-height: 1.65;
  margin-bottom: 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-list-card .pl-foot {
  display: flex;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--gray-100);
}
.product-list-card .pl-price {
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
}
.product-list-card .pl-price small {
  font-size: 12px;
  font-weight: 500;
  color: var(--gray-500);
  margin-right: 2px;
}
.product-list-card .pl-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s;
}
.product-list-card .pl-link:hover { gap: 10px; }

.empty-state {
  text-align: center;
  padding: 80px 24px;
  background: var(--white);
  border-radius: 18px;
  border: 1px dashed var(--gray-300);
}
.empty-state .es-icon {
  font-size: 56px;
  margin-bottom: 16px;
  opacity: 0.4;
}
.empty-state h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}
.empty-state p {
  color: var(--gray-500);
  font-size: 14px;
}

/* ===== PAGINATION ===== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 64px;
  flex-wrap: wrap;
}
.pagination a,
.pagination span {
  min-width: 44px;
  height: 44px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--gray-300);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  background: var(--white);
  transition: all 0.3s;
  text-decoration: none;
}
.pagination a:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}
.pagination .active,
.pagination a.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
  cursor: default;
}
.pagination span.disabled,
.pagination a.disabled {
  color: var(--gray-300);
  cursor: not-allowed;
  background: var(--gray-100);
  border-color: var(--gray-200);
  pointer-events: none;
  user-select: none;
  transform: none !important;
  box-shadow: none;
}
.pagination span.disabled:hover,
.pagination a.disabled:hover {
  border-color: var(--gray-200);
  color: var(--gray-300);
  background: var(--gray-100);
  transform: none;
}
.pagination-info {
  text-align: center;
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 16px;
  letter-spacing: 0.02em;
}

/* ===== PRODUCT DETAIL ===== */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.product-gallery {
  position: sticky;
  top: 96px;
}
.product-gallery .pg-main {
  aspect-ratio: 1;
  background: linear-gradient(135deg, #f0f4ff 0%, #e8effc 100%);
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.product-gallery .pg-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.product-gallery .pg-main .pg-noimg {
  font-size: 120px;
  color: var(--primary);
  opacity: 0.3;
}
/* ===== 产品画廊小图：横排 + 左右箭头滑动 ===== */
.product-gallery .pg-thumbs-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  position: relative;
}
.product-gallery .pg-arrow {
  flex: 0 0 auto;
  width: 36px;
  height: 64px;
  border-radius: 10px;
  border: 1px solid var(--gray-200);
  background: #fff;
  color: var(--dark);
  font-size: 24px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .25s ease;
  user-select: none;
  box-shadow: 0 2px 6px rgba(23, 44, 74, 0.06);
  padding: 0;
}
.product-gallery .pg-arrow:hover:not([disabled]) {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.18);
  transform: translateY(-1px);
}
.product-gallery .pg-arrow[disabled] {
  opacity: 0.35 !important;
  cursor: not-allowed !important;
  pointer-events: none;
}
.product-gallery .pg-arrow:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.product-gallery .pg-thumbs {
  flex: 1 1 auto;
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;         /* 横排不换行 */
  gap: 12px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;     /* Firefox */
  -ms-overflow-style: none;  /* IE/Edge */
  padding: 4px 2px;
  scroll-behavior: smooth;
}
.product-gallery .pg-thumbs::-webkit-scrollbar {
  display: none;             /* Chrome/Safari: 不显示滚动条，视觉更干净 */
}
.product-gallery .pg-thumb {
  flex: 0 0 auto;
  width: 88px;
  height: 88px;
  aspect-ratio: 1 / 1;
  border-radius: 10px;
  overflow: hidden;
  background: var(--gray-100);
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color .25s, transform .25s, box-shadow .25s;
  scroll-snap-align: start;
}
.product-gallery .pg-thumb:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(23, 44, 74, 0.12);
}
.product-gallery .pg-thumb.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}
.product-gallery .pg-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.product-info-block .pi-cat {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--primary);
  margin-bottom: 12px;
}
.product-info-block h1 {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.25;
  margin-bottom: 16px;
}
.product-info-block .pi-desc {
  font-size: 15px;
  color: var(--gray-500);
  line-height: 1.8;
  margin-bottom: 28px;
}
.product-info-block .pi-price {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 20px 0;
  margin-bottom: 28px;
  border-top: 1px solid var(--gray-100);
  border-bottom: 1px solid var(--gray-100);
}
.product-info-block .pi-price .pp-label {
  font-size: 13px;
  color: var(--gray-500);
}
.product-info-block .pi-price .pp-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
}
.product-info-block .pi-attrs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}
.product-info-block .pi-attr {
  background: var(--gray-100);
  border-radius: 12px;
  padding: 16px 18px;
}
.product-info-block .pi-attr .pa-label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-500);
  margin-bottom: 4px;
}
.product-info-block .pi-attr .pa-value {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
}
.product-info-block .pi-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.product-info-block .pi-cta .btn-primary { padding: 14px 28px; }
.product-info-block .pi-cta .btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--gray-300);
}
.product-info-block .pi-cta .btn-outline:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.product-content-body {
  margin-top: 80px;
  padding-top: 56px;
  border-top: 1px solid var(--gray-100);
}
.product-content-body h2 {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 24px;
  text-align: center;
}
.product-content-body .pcb-content {
  max-width: 880px;
  margin: 0 auto;
  font-size: 16px;
  color: var(--gray-700);
  line-height: 1.9;
}
.product-content-body .pcb-content :where(h2, h3, h4) {
  color: var(--dark);
  margin: 1.4em 0 0.6em;
}
.product-content-body .pcb-content img { border-radius: 12px; margin: 1.2em 0; }
.product-content-body .pcb-content ul,
.product-content-body .pcb-content ol { padding-left: 24px; margin: 1em 0 1.4em; }
.product-content-body .pcb-content li { margin-bottom: 0.4em; }

.related-products {
  margin-top: 80px;
  padding-top: 56px;
  border-top: 1px solid var(--gray-100);
}
.related-products h2 {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
  text-align: center;
}
.related-products .rp-sub {
  text-align: center;
  color: var(--gray-500);
  font-size: 15px;
  margin-bottom: 40px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .why-grid, .products-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .product-list-grid { grid-template-columns: repeat(2, 1fr); }
  .product-detail { grid-template-columns: 1fr; }
  .product-gallery { position: static; }
  .contact-page-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-toggle { display: flex; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .page-banner { padding: 140px 0 56px; }
  .single-page { padding: 36px 24px; }
  .product-list-grid { grid-template-columns: 1fr; }
  .contact-info-card, .contact-form-card { padding: 32px 24px; }
  .product-info-block h1 { font-size: 28px; }
  .product-info-block .pi-attrs { grid-template-columns: 1fr; }
  .pagination a, .pagination span { min-width: 38px; height: 38px; padding: 0 10px; font-size: 13px; }
  .product-gallery .pg-thumbs-wrap { gap: 8px; }
  .product-gallery .pg-arrow { width: 30px; height: 56px; font-size: 20px; border-radius: 8px; }
  .product-gallery .pg-thumb { width: 72px; height: 72px; }
  .product-gallery .pg-thumbs { gap: 10px; }
}