/* ============================================================
   MTKT MED — www.mtkmed.com
   Shared stylesheet (index.html + checkout.html)
   ============================================================ */

/* ========== RESET & BASE ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  color: #F2EFE9;
  background: #0A0A0A;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; }

/* ========== DESIGN TOKENS ========== */
:root {
  --black-deep: #0A0A0A;
  --black-primary: #0E0E0E;
  --black-secondary: #161616;
  --black-tertiary: #1F1F1F;
  --gold-primary: #D4AF37;
  --gold-light: #F5D76E;
  --gold-dark: #8B7355;
  --gold-faded: rgba(212, 175, 55, 0.15);
  --text-primary: #F2EFE9;
  --text-secondary: #B8B5AE;
  --text-muted: #7A7A7A;
  --border-gold: rgba(212, 175, 55, 0.25);
  --border-soft: rgba(255, 255, 255, 0.08);
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

.font-display { font-family: var(--font-display); }
.font-mono { font-family: var(--font-mono); }

/* ========== UTILITY ========== */
.container { max-width: 1320px; margin: 0 auto; padding: 0 32px; }
.section { padding: 120px 0; position: relative; }
.gold-gradient-text {
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold-primary) 45%, var(--gold-dark) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hairline {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-primary) 20%, var(--gold-primary) 80%, transparent);
  opacity: 0.4;
  border: none;
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-primary);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--gold-primary);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-top: 20px;
}
.section-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin-top: 20px;
  line-height: 1.7;
}
.section-header { margin-bottom: 64px; }
.section-header.center { text-align: center; }
.section-header.center .section-subtitle { margin-left: auto; margin-right: auto; }
.section-header.center .eyebrow { justify-content: center; }

/* Button styles */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}
.btn-gold {
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold-primary) 50%, var(--gold-dark) 100%);
  color: #0A0A0A;
  border: 1px solid var(--gold-primary);
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px -8px rgba(212, 175, 55, 0.5);
}
.btn-outline {
  border: 1px solid var(--border-gold);
  color: var(--gold-primary);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--gold-primary);
  background: var(--gold-faded);
  transform: translateY(-2px);
}
.btn-arrow {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}
.btn:hover .btn-arrow { transform: translateX(4px); }

/* ========== NAVIGATION ========== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all 0.4s ease;
  background: transparent;
}
.nav.scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-gold);
  padding: 14px 0;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.logo-mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--gold-primary);
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 14px;
  background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}
.logo-mark::before {
  content: '';
  position: absolute;
  inset: 2px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(212,175,55,0.2), transparent 70%);
}
.logo-text {
  background: linear-gradient(135deg, var(--gold-light), var(--gold-primary), var(--gold-dark));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.logo-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  display: block;
  font-weight: 400;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-link {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.3s ease;
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px; left: 0;
  width: 0;
  height: 1px;
  background: var(--gold-primary);
  transition: width 0.3s ease;
}
.nav-link:hover { color: var(--gold-primary); }
.nav-link:hover::after { width: 100%; }
.nav-cta { display: flex; align-items: center; gap: 16px; }
.nav-menu-btn { display: none; }

/* ========== HERO ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
  filter: saturate(0.8) contrast(1.1);
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,10,10,0.6) 0%, rgba(10,10,10,0.85) 60%, #0A0A0A 100%);
}
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(212,175,55,0.08) 0%, transparent 70%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1320px;
  margin: 0 auto;
  padding: 120px 32px 80px;
  width: 100%;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold-primary);
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 16px;
  opacity: 0;
  animation: fadeUp 1s ease 0.2s forwards;
}
.hero-eyebrow::before {
  content: '';
  width: 48px;
  height: 1px;
  background: var(--gold-primary);
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  max-width: 900px;
  opacity: 0;
  animation: fadeUp 1s ease 0.4s forwards;
}
.hero-title-line {
  display: block;
  overflow: hidden;
}
.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 560px;
  margin-top: 32px;
  line-height: 1.7;
  opacity: 0;
  animation: fadeUp 1s ease 0.6s forwards;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 48px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 1s ease 0.8s forwards;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 96px;
  padding-top: 48px;
  border-top: 1px solid var(--border-gold);
  opacity: 0;
  animation: fadeUp 1s ease 1s forwards;
}
.hero-stat-number {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}
.hero-stat-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 8px;
}
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0;
  animation: fadeUp 1s ease 1.4s forwards;
}
.hero-scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(180deg, var(--gold-primary), transparent);
  position: relative;
  overflow: hidden;
}
.hero-scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 40%;
  background: linear-gradient(180deg, transparent, var(--gold-light));
  animation: scrollDown 2s ease infinite;
}
@keyframes scrollDown {
  0% { top: -40%; }
  100% { top: 100%; }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== ABOUT / BRAND ========== */
.about {
  background: var(--black-primary);
  position: relative;
}
.about::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-primary) 20%, var(--gold-primary) 80%, transparent);
  opacity: 0.3;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-image-wrap {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
}
.about-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.3) contrast(1.05);
  transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.about-image-wrap:hover img { transform: scale(1.04); }
.about-image-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10,10,10,0.7) 100%);
}
.about-image-badge {
  position: absolute;
  bottom: 32px;
  left: 32px;
  z-index: 2;
  padding: 20px 28px;
  border: 1px solid var(--border-gold);
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(10px);
}
.about-image-badge .year {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}
.about-image-badge .year-label {
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 6px;
}
.about-frame {
  position: absolute;
  top: -20px;
  right: -20px;
  bottom: 20px;
  left: 20px;
  border: 1px solid var(--border-gold);
  z-index: -1;
}
.about-features {
  margin-top: 48px;
  display: grid;
  gap: 24px;
}
.about-feature {
  display: flex;
  gap: 20px;
  padding: 24px;
  border: 1px solid var(--border-soft);
  background: rgba(255,255,255,0.015);
  transition: all 0.4s ease;
}
.about-feature:hover {
  border-color: var(--border-gold);
  background: var(--gold-faded);
  transform: translateX(6px);
}
.about-feature-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-gold);
  color: var(--gold-primary);
}
.about-feature-icon svg { width: 22px; height: 22px; }
.about-feature h4 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.about-feature p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========== CERTIFICATIONS ========== */
.certifications {
  background: var(--black-secondary);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.certifications::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
}
.cert-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  align-items: center;
}
.cert-item {
  text-align: center;
  padding: 32px 16px;
  border: 1px solid var(--border-soft);
  background: rgba(255,255,255,0.01);
  transition: all 0.4s ease;
}
.cert-item:hover {
  border-color: var(--border-gold);
  background: var(--gold-faded);
  transform: translateY(-4px);
}
.cert-mark {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold-light), var(--gold-primary), var(--gold-dark));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.05em;
}
.cert-name {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 10px;
}

/* ========== PRODUCTS ========== */
.products {
  background: var(--black-primary);
  position: relative;
}
.products-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 48px;
}
.filter-chip {
  padding: 8px 20px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--border-soft);
  color: var(--text-muted);
  background: transparent;
  transition: all 0.3s ease;
  border-radius: 100px;
  cursor: pointer;
}
.filter-chip:hover,
.filter-chip.active {
  border-color: var(--gold-primary);
  color: var(--gold-primary);
  background: var(--gold-faded);
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  position: relative;
  background: var(--black-secondary);
  border: 1px solid var(--border-soft);
  overflow: hidden;
  transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-8px);
  box-shadow: 0 32px 64px -24px rgba(0,0,0,0.8), 0 0 40px -10px rgba(212,175,55,0.15);
}
.product-card-image {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: linear-gradient(180deg, #1a1a1a, #0f0f0f);
}
.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), filter 0.6s ease;
  padding: 12px;
  filter: drop-shadow(0 4px 20px rgba(0,0,0,0.5));
}
.product-card:hover .product-card-image img { transform: scale(1.06); filter: drop-shadow(0 8px 30px rgba(212,175,55,0.25)); }
.product-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10,10,10,0.85) 100%);
  opacity: 0.7;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.product-card-image::before {
  content: '';
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(212,175,55,0.35);
  z-index: 3;
  pointer-events: none;
  transition: all 0.5s ease;
}
.product-card:hover .product-card-image::before {
  border-color: rgba(212,175,55,0.7);
  inset: 6px;
  box-shadow: inset 0 0 30px rgba(212,175,55,0.1);
}
.product-card:hover .product-card-image::after { opacity: 0.4; }
.product-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background: rgba(212, 175, 55, 0.15);
  border: 1px solid var(--border-gold);
  color: var(--gold-primary);
  backdrop-filter: blur(10px);
}
.product-card-body {
  padding: 28px;
  position: relative;
}
.product-card-body::before {
  content: '';
  position: absolute;
  top: 0; left: 28px; right: 28px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold-primary), transparent);
  opacity: 0.3;
}
.product-category {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-primary);
  margin-bottom: 10px;
}
.product-name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.product-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-card-footer {
  padding: 0 28px 28px;
  margin-top: auto;
}
.price-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border-soft);
}
.product-price {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  color: var(--gold-primary);
  line-height: 1;
}
.price-note {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.buy-row {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}
.btn-mini {
  flex: 1;
  padding: 11px 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  white-space: nowrap;
}
.btn-add {
  background: transparent;
  border: 1px solid var(--border-gold);
  color: var(--gold-primary);
}
.btn-add:hover {
  background: var(--gold-faded);
  border-color: var(--gold-primary);
}
.btn-buy {
  background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
  border: 1px solid var(--gold-primary);
  color: #0A0A0A;
}
.btn-buy:hover {
  box-shadow: 0 8px 24px -8px rgba(212,175,55,0.5);
  transform: translateY(-1px);
}

/* ========== OEM / ODM ========== */
.oem {
  background: var(--black-secondary);
  position: relative;
  overflow: hidden;
}
.oem::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse 60% 40% at 20% 50%, rgba(212,175,55,0.06), transparent 70%);
  pointer-events: none;
}
.oem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.oem-process {
  display: grid;
  gap: 2px;
}
.oem-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border-soft);
  align-items: start;
  transition: all 0.3s ease;
}
.oem-step:first-child { border-top: 1px solid var(--border-soft); }
.oem-step:hover {
  padding-left: 12px;
}
.oem-step-number {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  opacity: 0.6;
  transition: opacity 0.3s ease;
}
.oem-step:hover .oem-step-number { opacity: 1; }
.oem-step h4 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.oem-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========== SERVICES STRIP ========== */
.services-strip {
  background: var(--black-primary);
  padding: 60px 0;
  border-top: 1px solid var(--border-gold);
  border-bottom: 1px solid var(--border-gold);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.service-item {
  text-align: center;
  padding: 20px;
}
.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-gold);
  color: var(--gold-primary);
  border-radius: 50%;
  background: var(--gold-faded);
}
.service-icon svg { width: 28px; height: 28px; }
.service-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.service-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========== GLOBAL / MARKET ========== */
.global {
  background: var(--black-secondary);
  position: relative;
  overflow: hidden;
}
.global-map-wrap {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: center;
}
.global-map {
  position: relative;
  aspect-ratio: 16/10;
  background: radial-gradient(ellipse at center, rgba(212,175,55,0.05), transparent 70%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.global-map svg {
  width: 100%;
  height: auto;
  opacity: 0.6;
}
.global-map svg path {
  fill: rgba(212, 175, 55, 0.15);
  stroke: var(--border-gold);
  stroke-width: 0.5;
}
.map-dot {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold-primary);
  box-shadow: 0 0 20px var(--gold-primary), 0 0 40px rgba(212,175,55,0.3);
  transform: translate(-50%, -50%);
  animation: pulse 2.5s ease-in-out infinite;
}
.map-dot::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid var(--gold-primary);
  animation: ring 2.5s ease-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  50% { transform: translate(-50%, -50%) scale(1.3); opacity: 0.7; }
}
@keyframes ring {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(2.5); opacity: 0; }
}
.global-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 48px;
}
.global-stat {
  padding: 28px;
  border: 1px solid var(--border-soft);
  background: rgba(255,255,255,0.015);
  transition: all 0.3s ease;
}
.global-stat:hover {
  border-color: var(--border-gold);
  background: var(--gold-faded);
}
.global-stat-number {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}
.global-stat-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 10px;
}

/* ========== R&D TEAM ========== */
.rnd {
  background: var(--black-primary);
  position: relative;
  overflow: hidden;
}
.rnd::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(ellipse 60% 40% at 80% 50%, rgba(212,175,55,0.06), transparent 70%);
  pointer-events: none;
}
.rnd-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  position: relative;
  z-index: 1;
}
.rnd-process {
  display: grid;
  gap: 2px;
}
.rnd-step {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-soft);
  align-items: start;
  transition: all 0.3s ease;
}
.rnd-step:first-child { border-top: 1px solid var(--border-soft); }
.rnd-step:hover {
  padding-left: 12px;
}
.rnd-step-number {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  opacity: 0.6;
  transition: opacity 0.3s ease;
}
.rnd-step:hover .rnd-step-number { opacity: 1; }
.rnd-step h4 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.rnd-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========== AFTER-SALES ========== */
.aftersales {
  background: var(--black-secondary);
  position: relative;
}
.aftersales::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-primary) 20%, var(--gold-primary) 80%, transparent);
  opacity: 0.3;
}
.aftersales-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}
.aftersales-card {
  background: var(--black-primary);
  border: 1px solid var(--border-soft);
  padding: 36px 28px;
  transition: all 0.4s ease;
  position: relative;
}
.aftersales-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-6px);
  box-shadow: 0 24px 48px -16px rgba(0,0,0,0.6);
}
.aftersales-card::before {
  content: '';
  position: absolute;
  top: 0; left: 28px;
  width: 40px;
  height: 1px;
  background: var(--gold-primary);
}
.aftersales-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-gold);
  color: var(--gold-primary);
  margin-bottom: 24px;
  background: var(--gold-faded);
}
.aftersales-card-icon svg { width: 22px; height: 22px; }
.aftersales-card h4 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
  line-height: 1.3;
}
.aftersales-list {
  display: grid;
  gap: 12px;
}
.aftersales-list li {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  padding-left: 20px;
  position: relative;
}
.aftersales-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-primary);
}
.aftersales-guarantees {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 32px;
}
.aftersales-guarantee {
  padding: 24px;
  border: 1px solid var(--border-gold);
  background: var(--gold-faded);
  text-align: center;
}
.aftersales-guarantee-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--gold-primary);
  margin-bottom: 6px;
}
.aftersales-guarantee-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.aftersales-lifetime {
  margin-top: 48px;
  padding: 40px;
  border: 1px solid var(--border-gold);
  background: linear-gradient(135deg, rgba(212,175,55,0.06), rgba(212,175,55,0.02));
  text-align: center;
  position: relative;
}
.aftersales-lifetime h4 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.aftersales-lifetime-sub {
  font-size: 13px;
  color: var(--gold-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.aftersales-lifetime-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  text-align: left;
}
.aftersales-lifetime-item {
  padding: 16px;
  border: 1px solid var(--border-soft);
  background: rgba(10,10,10,0.5);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========== CONTACT ========== */
.contact {
  background: var(--black-primary);
  position: relative;
}
.contact::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse 80% 50% at 80% 20%, rgba(212,175,55,0.05), transparent 70%);
  pointer-events: none;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  position: relative;
  z-index: 1;
}
.contact-info-block {
  margin-top: 48px;
  display: grid;
  gap: 32px;
}
.contact-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.contact-item-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-gold);
  color: var(--gold-primary);
  background: var(--gold-faded);
}
.contact-item-icon svg { width: 18px; height: 18px; }
.contact-item-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-primary);
  margin-bottom: 6px;
}
.contact-item-value {
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.6;
}
.contact-form {
  background: var(--black-secondary);
  border: 1px solid var(--border-soft);
  padding: 48px;
  position: relative;
}
.contact-form::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 60px;
  height: 1px;
  background: var(--gold-primary);
}
.contact-form-title {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.contact-form-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 32px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-primary);
  background: var(--black-tertiary);
  border: 1px solid var(--border-soft);
  outline: none;
  transition: all 0.3s ease;
  border-radius: 0;
  -webkit-appearance: none;
  appearance: none;
}
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--gold-primary);
  background: var(--black-primary);
  box-shadow: 0 0 0 3px var(--gold-faded);
}
.form-select {
  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='%23D4AF37' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  cursor: pointer;
}
.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}
.form-submit {
  width: 100%;
  justify-content: center;
  padding: 16px 32px;
  margin-top: 8px;
}

/* ========== FOOTER ========== */
.footer {
  background: var(--black-deep);
  padding: 80px 0 0;
  border-top: 1px solid var(--border-gold);
  position: relative;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 60px;
}
.footer-brand-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 20px;
  max-width: 320px;
}
.footer-socials {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}
.footer-social {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-soft);
  color: var(--text-muted);
  transition: all 0.3s ease;
}
.footer-social:hover {
  border-color: var(--gold-primary);
  color: var(--gold-primary);
  background: var(--gold-faded);
}
.footer-social svg { width: 16px; height: 16px; }
.footer-col-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}
.footer-links { display: grid; gap: 14px; }
.footer-link {
  font-size: 13px;
  color: var(--text-muted);
  transition: color 0.3s ease;
}
.footer-link:hover { color: var(--gold-primary); }
.footer-bottom {
  padding: 24px 0;
  border-top: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}
.footer-bottom-links {
  display: flex;
  gap: 24px;
}
.footer-bottom-links a { transition: color 0.3s ease; }
.footer-bottom-links a:hover { color: var(--gold-primary); }

/* ========== SHOPPING CART ========== */
.cart-btn {
  position: relative;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-gold);
  color: var(--gold-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  background: transparent;
}
.cart-btn:hover { background: var(--gold-faded); }
.cart-btn svg { width: 18px; height: 18px; }
.cart-count-badge {
  position: absolute;
  top: -7px;
  right: -8px;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  background: var(--gold-primary);
  color: #0A0A0A;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 5px;
  font-family: var(--font-mono);
}
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(4px);
  z-index: 1998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}
.cart-overlay.open { opacity: 1; pointer-events: auto; }
.cart-drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: min(440px, 100%);
  background: var(--black-primary);
  border-left: 1px solid var(--border-gold);
  z-index: 1999;
  transform: translateX(102%);
  transition: transform 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  display: flex;
  flex-direction: column;
}
.cart-drawer.open { transform: translateX(0); }
.cart-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px;
  border-bottom: 1px solid var(--border-soft);
}
.cart-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
}
.cart-close {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-soft);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
}
.cart-close:hover { border-color: var(--gold-primary); color: var(--gold-primary); }
.cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 22px 28px;
  display: grid;
  gap: 18px;
  align-content: start;
}
.cart-item {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-soft);
}
.cart-item:last-child { border-bottom: none; padding-bottom: 0; }
.cart-item-img {
  width: 76px;
  height: 76px;
  object-fit: contain;
  background: #141414;
  border: 1px solid var(--border-soft);
  padding: 4px;
}
.cart-item-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
}
.cart-item-price {
  font-size: 12px;
  color: var(--gold-primary);
  margin-top: 2px;
  font-family: var(--font-mono);
}
.qty-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
}
.qty-btn {
  width: 26px;
  height: 26px;
  border: 1px solid var(--border-soft);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}
.qty-btn:hover { border-color: var(--gold-primary); color: var(--gold-primary); }
.qty-val {
  font-size: 13px;
  min-width: 22px;
  text-align: center;
  font-family: var(--font-mono);
}
.cart-remove {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  cursor: pointer;
  background: none;
  border: none;
  text-transform: uppercase;
  transition: color 0.2s ease;
  margin-left: auto;
}
.cart-remove:hover { color: #e05c5c; }
.cart-empty {
  text-align: center;
  color: var(--text-muted);
  padding: 60px 20px;
  display: grid;
  gap: 16px;
  justify-items: center;
}
.cart-empty svg { width: 44px; height: 44px; opacity: 0.4; }
.cart-foot {
  padding: 24px 28px;
  border-top: 1px solid var(--border-gold);
  display: grid;
  gap: 14px;
  background: var(--black-secondary);
}
.cart-subrow {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.cart-sublabel {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.cart-subtotal {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  color: var(--gold-primary);
}
.cart-note { font-size: 11px; color: var(--text-muted); }
.cart-checkout { width: 100%; justify-content: center; }
.cart-continue {
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.3s ease;
  background: none;
  border: none;
}
.cart-continue:hover { color: var(--gold-primary); }

/* Toast */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translate(-50%, 20px);
  background: var(--black-tertiary);
  border: 1px solid var(--gold-primary);
  color: var(--text-primary);
  padding: 12px 24px;
  font-size: 13px;
  letter-spacing: 0.03em;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: all 0.35s ease;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ========== CHECKOUT PAGE ========== */
.checkout-wrap {
  padding-top: 140px;
  padding-bottom: 100px;
  background: var(--black-primary);
  min-height: 100vh;
}
.checkout-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 16px;
}
.checkout-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 56px;
  margin-top: 56px;
  align-items: start;
}
.order-summary {
  background: var(--black-secondary);
  border: 1px solid var(--border-soft);
  padding: 36px;
  position: sticky;
  top: 110px;
}
.order-summary::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 60px;
  height: 1px;
  background: var(--gold-primary);
}
.order-summary h3 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 28px;
}
.summary-item {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border-soft);
  align-items: center;
}
.summary-item-img {
  width: 72px;
  height: 72px;
  object-fit: contain;
  background: #141414;
  border: 1px solid var(--border-soft);
  padding: 4px;
}
.summary-item-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
}
.summary-item-unit {
  font-size: 12px;
  color: var(--gold-primary);
  font-family: var(--font-mono);
  margin-top: 3px;
}
.summary-item-line {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: right;
}
.summary-totals {
  display: grid;
  gap: 12px;
  padding-top: 24px;
}
.summary-row {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--text-secondary);
}
.summary-row.total {
  border-top: 1px solid var(--border-gold);
  padding-top: 16px;
  margin-top: 8px;
  align-items: baseline;
}
.summary-row.total .label {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.summary-row.total .value {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  color: var(--gold-primary);
}
.order-success {
  display: none;
  text-align: center;
  padding: 80px 32px;
  max-width: 640px;
  margin: 0 auto;
}
.order-success.show { display: block; }
.success-icon {
  width: 84px;
  height: 84px;
  margin: 0 auto 28px;
  border: 1px solid var(--gold-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gold-faded);
}
.success-icon svg { width: 38px; height: 38px; color: var(--gold-primary); }
.order-success h2 {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.order-no {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--gold-primary);
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}
.order-success p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 480px;
  margin: 0 auto 32px;
}
.success-amount {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 24px;
}

/* ========== REVEAL ANIMATIONS ========== */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .section { padding: 80px 0; }
  .container { padding: 0 24px; }
  .nav-inner { padding: 0 24px; }
  .hero-content { padding: 100px 24px 60px; }

  .about-grid,
  .oem-grid,
  .rnd-grid,
  .global-map-wrap,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .aftersales-cards { grid-template-columns: 1fr; gap: 20px; }
  .aftersales-lifetime-list { grid-template-columns: 1fr 1fr; }
  .about-image-wrap { aspect-ratio: 16/10; max-width: 520px; }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 60px; }
  .cert-row { grid-template-columns: repeat(3, 1fr); gap: 16px; }

  .checkout-grid { grid-template-columns: 1fr; gap: 40px; }
  .order-summary { position: static; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .container { padding: 0 20px; }
  .nav-inner { padding: 0 20px; }

  .nav-links { display: none; }
  .nav-cta .btn { display: none; }
  .nav-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-gold);
    color: var(--gold-primary);
  }

  .hero-title { font-size: 42px; }
  .hero-desc { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding-top: 32px;
  }
  .hero-stat-number { font-size: 32px; }

  .section-title { font-size: 32px; }
  .section-header { margin-bottom: 40px; }

  .products-grid { grid-template-columns: 1fr; gap: 16px; }
  .product-card-body { padding: 20px; }
  .product-card-footer { padding: 0 20px 20px; }
  .price-row { padding-top: 14px; }

  .services-grid { grid-template-columns: 1fr; gap: 24px; }
  .global-stats { grid-template-columns: 1fr 1fr; gap: 16px; }
  .global-stat-number { font-size: 36px; }

  .contact-form { padding: 28px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .oem-step {
    grid-template-columns: 60px 1fr;
    gap: 16px;
    padding: 24px 0;
  }
  .oem-step-number { font-size: 36px; }

  .cert-row { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .cert-item { padding: 20px 12px; }

  .rnd-step {
    grid-template-columns: 50px 1fr;
    gap: 16px;
    padding: 20px 0;
  }
  .rnd-step-number { font-size: 32px; }

  .aftersales-lifetime { padding: 28px 20px; }
  .aftersales-lifetime h4 { font-size: 20px; }
  .aftersales-lifetime-list { grid-template-columns: 1fr; }

  .about-image-badge {
    bottom: 20px;
    left: 20px;
    padding: 14px 20px;
  }
  .about-image-badge .year { font-size: 36px; }

  .checkout-wrap { padding-top: 110px; }
  .order-summary { padding: 24px; }
  .buy-row { flex-direction: column; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 34px; }
  .section-title { font-size: 28px; }
  .global-stats { grid-template-columns: 1fr; }
}