/* ============================================
   ZTEC v2 — Apollo-inspired Industrial Layout
   Blue #1B3FA0 · Red #CC1F2D — Balanced
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@300;400;500;600;700;800;900&family=Barlow+Condensed:wght@500;600;700;800;900&display=swap');

:root {
  --blue:        #1B3FA0;
  --blue-dark:   #0F2566;
  --blue-mid:    #142E80;
  --blue-light:  #2B52C8;
  --blue-50:     #EEF2FB;
  --red:         #CC1F2D;
  --red-dark:    #9A1622;
  --red-deep:    #7A0E1A;
  --red-light:   #E8353F;
  --red-50:      #FDEEEF;
  --gold:        #D4A547;
  --gold2:       #FFC72D;
  --ink:         #0A1845;
  --ink-2:       #0F2566;
  --ink-3:       #18336E;
  --steel-500:   #5B6378;
  --steel-300:   #C9CDD4;
  --steel-100:   #EEF1F6;
  --steel-50:    #F6F8FB;
  --white:       #FFFFFF;
  --max:         1280px;
  --max-wide:    1440px;
  --pad:         clamp(20px, 4vw, 60px);
  --radius:      4px;
  --radius-md:   8px;
  --shadow-sm:   0 2px 8px rgba(15, 37, 102, 0.08);
  --shadow:      0 8px 24px rgba(15, 37, 102, 0.12);
  --shadow-lg:   0 16px 48px rgba(15, 37, 102, 0.18);
  --shadow-red:  0 8px 24px rgba(204, 31, 45, 0.25);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-2);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

.gold2 { color: var(--gold2) !important; }

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

/* Display typography */
.display-font { font-family: 'Barlow Condensed', 'Be Vietnam Pro', sans-serif; letter-spacing: -0.01em; }

/* ── TOP BAR ── */
.top-bar {
  background: var(--ink);
  color: var(--white);
  font-size: 13px;
  padding: 8px 0;
}
.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.top-bar a { color: var(--white); opacity: 0.85; transition: opacity .2s; }
.top-bar a:hover { opacity: 1; color: var(--red-light); }
.top-bar-left { display: flex; gap: 24px; flex-wrap: wrap; }
.top-bar-left span i { color: var(--red-light); margin-right: 6px; }
.top-bar-right { display: flex; gap: 16px; align-items: center; }

.lang-switch {
  display: inline-flex;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 2px;
  overflow: hidden;
}
.lang-switch button {
  color: var(--white);
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .05em;
  opacity: 0.6;
  transition: all .2s;
}
.lang-switch button.active {
  background: var(--red);
  opacity: 1;
}

/* ── NAVBAR ── */
.navbar {
  background: var(--white);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow .3s;
}
.navbar.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,.1); }
.nav-inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0 var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  gap: 32px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  line-height: 1;
}
.nav-logo img { height: 44px; width: auto; display: block; }
.nav-logo-tag {
  font-family: 'Be Vietnam Pro';
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--steel-500);
  text-transform: uppercase;
  border-left: 2px solid var(--red);
  padding-left: 10px;
  max-width: 110px;
  line-height: 1.3;
}

.nav-menu { display: flex; gap: 4px; align-items: center; }
.nav-item { position: relative; }
.nav-item > a, .nav-item > button {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-2);
  letter-spacing: .02em;
  text-transform: uppercase;
  transition: color .2s;
  position: relative;
}
.nav-item > a::after, .nav-item > button::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background: var(--red);
  transition: all .3s;
  transform: translateX(-50%);
}
.nav-item:hover > a, .nav-item:hover > button,
.nav-item > a.active { color: var(--red); }
.nav-item > a.active::after,
.nav-item:hover > a::after,
.nav-item:hover > button::after { width: 24px; }

.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 240px;
  background: var(--white);
  border-top: 3px solid var(--red);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all .25s;
  padding: 8px 0;
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--ink-2);
  transition: all .2s;
  border-left: 3px solid transparent;
}
.nav-dropdown a:hover {
  background: var(--red-50);
  color: var(--red);
  border-left-color: var(--red);
  padding-left: 24px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--red);
  color: var(--white);
  padding: 12px 22px;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .05em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: all .25s;
  position: relative;
  overflow: hidden;
}
.nav-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--blue);
  transform: translateY(100%);
  transition: transform .3s;
}
.nav-cta:hover::before { transform: translateY(0); }
.nav-cta > * { position: relative; z-index: 1; }

.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.hamburger span {
  display: block; width: 24px; height: 2px; background: var(--blue);
  transition: all .25s;
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--white);
  z-index: 200;
  padding: 80px 24px 32px;
  overflow-y: auto;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 16px 0;
  font-size: 16px;
  font-weight: 600;
  border-bottom: 1px solid var(--steel-100);
  text-transform: uppercase;
}
.mobile-menu .mobile-sub { padding-left: 16px; font-size: 14px; font-weight: 500; text-transform: none; }
.mobile-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 40px;
  height: 40px;
  background: var(--red);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: all .25s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.btn-red {
  background: #FF6B35;
  color: var(--white);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}
.btn-red:hover { background: #E65A28; transform: translateY(-2px); }
.btn-blue {
  background: var(--blue);
  color: var(--white);
}
.btn-blue:hover { background: var(--blue-dark); transform: translateY(-2px); }
.btn-outline-white {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}
.btn-outline-white:hover { background: var(--white); color: var(--blue); }
.btn-outline-red {
  background: transparent;
  color: var(--red);
  border: 2px solid var(--red);
}
.btn-outline-red:hover { background: var(--red); color: var(--white); }
.btn-ghost {
  background: transparent;
  color: var(--blue);
  padding: 10px 0;
}
.btn-ghost::after {
  content: '→';
  margin-left: 6px;
  transition: transform .25s;
}
.btn-ghost:hover::after { transform: translateX(4px); }

/* ── CTA BUTTONS GROUP (Responsive) ── */
.cta-buttons-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
}
.btn-primary {
  background: var(--red);
  color: var(--white);
  box-shadow: var(--shadow-red);
  flex: 1;
  min-width: 160px;
}
.btn-primary:hover {
  background: var(--red-dark);
  transform: translateY(-2px);
}
.btn-secondary {
  background: #FF6B35;
  color: var(--white);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
  flex: 1;
  min-width: 160px;
}
.btn-secondary:hover {
  background: #E65A28;
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .cta-buttons-group {
    flex-direction: column;
    gap: 8px;
  }
  .btn-primary, .btn-secondary {
    width: 100%;
    min-width: unset;
    flex: unset;
  }
}

/* ── SECTION TITLES ── */
.section { padding: clamp(60px, 8vw, 100px) 0; position: relative; }
.section-dark { background: var(--ink); color: var(--white); }
.section-blue { background: var(--blue); color: var(--white); }
.section-red { background: var(--red-deep); color: var(--white); }
.section-gray { background: var(--steel-50); }

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 16px;
}
.section-eyebrow::before {
  content: '';
  width: 32px;
  height: 2px;
  background: var(--red);
}
.section-blue .section-eyebrow,
.section-red .section-eyebrow,
.section-dark .section-eyebrow {
  color: var(--white);
}
.section-blue .section-eyebrow::before,
.section-red .section-eyebrow::before,
.section-dark .section-eyebrow::before {
  background: var(--white);
}

.section-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  text-transform: uppercase;
  color: var(--blue-light);
}
.section-title .accent { color: var(--blue-light); }
.section-blue .section-title,
.section-blue .section-title .accent,
.section-red .section-title,
.section-red .section-title .accent { color: var(--gold); }

.section-sub {
  font-size: 17px;
  color: var(--steel-500);
  max-width: 720px;
  margin-bottom: 56px;
}
.section-blue .section-sub,
.section-red .section-sub,
.section-dark .section-sub { color: rgba(255,255,255,.85); }
.section-header { margin-bottom: 56px; }
.section-header-center { text-align: center; margin-left: auto; margin-right: auto; }
.section-header-center .section-eyebrow { justify-content: center; }
.section-header-center .section-sub { margin-left: auto; margin-right: auto; }

/* ── HERO CAROUSEL ── */
.hero {
  position: relative;
  height: clamp(480px, 85vh, 720px);
  overflow: hidden;
  background: var(--ink);
}
.hero-slides {
  display: flex;
  height: 100%;
  transition: transform .8s cubic-bezier(.65,0,.35,1);
  will-change: transform;
}
.hero-slide {
  flex: 0 0 100%;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-slide-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-slide-1 .hero-slide-bg {
  background:
    radial-gradient(ellipse at 80% 50%, rgba(232,53,63,.35), transparent 65%),
    linear-gradient(135deg, #7A0E1A 0%, #9A1622 50%, #5A0810 100%);
}
.hero-slide-2 .hero-slide-bg {
  background:
    radial-gradient(ellipse at 80% 50%, rgba(43,82,200,.3), transparent 65%),
    linear-gradient(135deg, #0A1845 0%, #1B3FA0 60%, #0F2566 100%);
}
.hero-slide-3 .hero-slide-bg {
  background:
    radial-gradient(ellipse at 50% 100%, rgba(212,165,71,.35), transparent 60%),
    linear-gradient(135deg, #5A0810 0%, #7A0E1A 60%, #9A1622 100%);
}
.hero-slide-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(45deg, rgba(255,255,255,.03) 0 2px, transparent 2px 40px);
  pointer-events: none;
}
.hero-slide-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0 var(--pad);
  width: 100%;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: 40px;
}
.hero-slide-content { color: var(--white); }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.1);
  border-left: 3px solid var(--red);
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
}
.hero-badge i { color: var(--gold); }
.hero-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 900;
  line-height: .95;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-title .accent { color: var(--red); display: block; }
.hero-slide-2 .hero-title .accent { color: var(--gold); }
.hero-slide-1 [data-i18n="hero.slide1.title2"] { color: #FFFFFF; }
.hero-sub {
  font-size: clamp(15px, 1.4vw, 18px);
  max-width: 540px;
  margin-bottom: 32px;
  color: rgba(255,255,255,.9);
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,.15);
}
.hero-stat-num {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  color: var(--gold);
  margin-bottom: 4px;
}
.hero-slide-1 .hero-stat-num { color: var(--red-light); }
.hero-stat-label { font-size: 12px; opacity: .8; text-transform: uppercase; letter-spacing: .1em; }

.hero-slide-image {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-slide-image img {
  max-height: 480px;
  width: auto;
  filter: drop-shadow(0 30px 60px rgba(0,0,0,.5));
  animation: floatY 6s ease-in-out infinite;
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero-controls {
  position: absolute;
  bottom: 32px;
  left: 0;
  right: 0;
  z-index: 5;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
}
.hero-dots { display: flex; gap: 8px; }
.hero-dot {
  width: 32px;
  height: 3px;
  background: rgba(255,255,255,.3);
  cursor: pointer;
  transition: all .3s;
}
.hero-dot.active { background: var(--red); width: 56px; }
.hero-arrow {
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,.1);
  color: var(--white);
  border: 1px solid rgba(255,255,255,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all .25s;
  backdrop-filter: blur(8px);
}
.hero-arrow:hover { background: var(--red); border-color: var(--red); }

/* ── SOLUTIONS (3 vertical cards) ── */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.solution-card {
  position: relative;
  min-height: 480px;
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
  color: var(--white);
  transition: transform .4s;
  cursor: pointer;
}
.solution-card:hover { transform: translateY(-6px); }
.solution-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
}
.solution-card-1 .solution-bg {
  background:
    linear-gradient(to top, rgba(15,37,102,.95) 0%, rgba(27,63,160,.6) 50%, rgba(27,63,160,.3) 100%),
    radial-gradient(circle at 30% 30%, var(--blue-light), var(--blue-dark));
}
.solution-card-2 .solution-bg {
  background:
    linear-gradient(to top, rgba(122,14,26,.95) 0%, rgba(204,31,45,.6) 50%, rgba(204,31,45,.3) 100%),
    radial-gradient(circle at 30% 30%, var(--red-light), var(--red-deep));
}
.solution-card-3 .solution-bg {
  background:
    linear-gradient(to top, rgba(10,24,69,.95) 0%, rgba(15,37,102,.7) 50%, rgba(27,63,160,.4) 100%),
    radial-gradient(circle at 30% 30%, var(--blue-light), var(--ink));
}
.solution-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(255,255,255,.06) 39px 40px),
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(255,255,255,.06) 39px 40px);
}
.solution-content { position: relative; z-index: 2; }
.solution-icon {
  width: 64px;
  height: 64px;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
}
.solution-card-2 .solution-icon { background: rgba(255,255,255,.2); }
.solution-num {
  position: absolute;
  top: 24px;
  right: 24px;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 84px;
  font-weight: 900;
  line-height: 1;
  color: rgba(255,255,255,.15);
}
.solution-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 38px;
  font-weight: 800;
  text-transform: uppercase;
  line-height: 1;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.solution-desc {
  font-size: 14px;
  opacity: .9;
  margin-bottom: 20px;
  max-width: 320px;
}
.solution-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--white);
  padding-bottom: 4px;
  border-bottom: 2px solid var(--white);
  transition: gap .25s;
}
.solution-link:hover { gap: 14px; }

/* ── PRODUCT CATEGORY CARDS ── */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.product-card {
  position: relative;
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--steel-100);
  transition: all .35s;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-8px);
  border-color: var(--red);
  box-shadow: var(--shadow-lg);
}
.product-card-image {
  position: relative;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--blue-50) 0%, var(--steel-100) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  overflow: hidden;
}
.product-card-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 50% 50%, rgba(204,31,45,.06), transparent 60%),
    repeating-linear-gradient(135deg, transparent 0 20px, rgba(27,63,160,.03) 20px 21px);
}
.product-card-image img {
  max-height: 240px;
  width: auto;
  position: relative;
  z-index: 1;
  transition: transform .4s;
}
.product-card:hover .product-card-image img { transform: scale(1.05); }
.product-card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--red);
  color: var(--white);
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  z-index: 2;
}
.product-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.product-card-cat {
  font-size: 11px;
  font-weight: 700;
  color: var(--red);
  letter-spacing: .15em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.product-card-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 8px;
  text-transform: uppercase;
  line-height: 1.1;
}
.product-card-desc {
  font-size: 14px;
  color: var(--steel-500);
  margin-bottom: 20px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--steel-100);
}
.product-card-pack {
  font-size: 12px;
  font-weight: 600;
  color: var(--steel-500);
}
.product-card-arrow {
  width: 36px;
  height: 36px;
  background: var(--steel-50);
  color: var(--blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .25s;
}
.product-card:hover .product-card-arrow {
  background: var(--red);
  color: var(--white);
  transform: rotate(-45deg);
}

/* ── BRAND BANNER (dark/red) ── */
.brand-banner {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(135deg, var(--red-deep) 0%, var(--red-dark) 60%, var(--red) 100%);
  color: var(--white);
  overflow: hidden;
}
.brand-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(45deg, transparent 0 40px, rgba(255,255,255,.04) 40px 41px);
}
.brand-banner-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.brand-banner-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 900;
  text-transform: uppercase;
  line-height: 1;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.brand-banner-title .accent { color: var(--gold); }
.brand-banner-text {
  font-size: 16px;
  opacity: .9;
  margin-bottom: 28px;
  max-width: 540px;
}

/* ── INNOVATION/TECHNOLOGY (3-col) ── */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.tech-card {
  text-align: center;
  padding: 40px 28px;
  background: var(--white);
  border: 1px solid var(--steel-100);
  border-radius: var(--radius-md);
  transition: all .3s;
  position: relative;
  overflow: hidden;
}
.tech-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red), var(--red-dark));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s;
}
.tech-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.tech-card:hover::before { transform: scaleX(1); }
.tech-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 32px;
  position: relative;
}
.tech-card:nth-child(2) .tech-icon { background: linear-gradient(135deg, var(--red-light), var(--red)); }
.tech-card:nth-child(3) .tech-icon { background: linear-gradient(135deg, var(--red), var(--red-dark)); }
.tech-icon::after {
  content: '';
  position: absolute;
  inset: -8px;
  border: 2px dashed rgba(0,0,0,.1);
  border-radius: 50%;
  animation: spin 20s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.tech-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--blue-dark);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.tech-text { color: var(--steel-500); font-size: 14px; line-height: 1.7; }

/* ── STORY SECTION (split image+text) ── */
.story-section {
  position: relative;
  overflow: hidden;
}
.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.story-image {
  position: relative;
  aspect-ratio: 5/4;
  background:
    linear-gradient(135deg, var(--red-deep) 0%, var(--red) 60%, var(--red-light) 100%);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.story-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(45deg, transparent 0 30px, rgba(255,255,255,.08) 30px 31px);
}
.story-image-badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: var(--white);
  padding: 20px 28px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-lg);
  z-index: 2;
}
.story-image-badge-num {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 48px;
  font-weight: 900;
  color: var(--red);
  line-height: 1;
}
.story-image-badge-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: .05em;
  line-height: 1.2;
}
.story-image-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--white);
  padding: 40px;
}
.story-image-content .display-font {
  font-size: 80px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: .9;
  text-transform: uppercase;
}
.story-image-content .tag {
  display: block;
  margin-top: 16px;
  font-size: 14px;
  letter-spacing: .15em;
  text-transform: uppercase;
  opacity: .8;
}

/* ── STATS / MARKET LEADERSHIP ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-card {
  text-align: center;
  padding: 32px 16px;
  border: 1px solid rgba(255,255,255,.15);
  background: rgba(255,255,255,.04);
  border-radius: var(--radius-md);
  transition: all .3s;
}
.stat-card:hover {
  background: rgba(255,255,255,.08);
  border-color: var(--gold);
  transform: translateY(-4px);
}
.stat-num {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 56px;
  font-weight: 900;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label { font-size: 13px; text-transform: uppercase; letter-spacing: .1em; opacity: .9; }

/* ── CSR/COMMUNITY BANNER ── */
.csr-banner {
  position: relative;
  padding: 100px 0;
  background:
    linear-gradient(135deg, rgba(122,14,26,.95) 0%, rgba(154,22,34,.9) 60%, rgba(204,31,45,.8) 100%);
  color: var(--white);
  overflow: hidden;
}
.csr-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 80% 20%, rgba(212,165,71,.2), transparent 50%);
}
.csr-inner {
  max-width: 760px;
  text-align: center;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.csr-banner [data-i18n="csr.eyebrow"],
.csr-banner [data-i18n="csr.title1"],
.csr-banner [data-i18n="csr.title2"] {
  color: #FFFFFF;
}

/* ── FOOTER ── */
.footer {
  background: var(--ink);
  color: var(--white);
  padding: 80px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .nav-logo { margin-bottom: 20px; }
.footer-brand .nav-logo img { height: 56px; background: var(--white); padding: 8px 14px; border-radius: 6px; }
.footer-brand p { color: rgba(255,255,255,.7); margin-bottom: 20px; font-size: 14px; }
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 14px;
}
.footer-contact-item i {
  width: 32px;
  height: 32px;
  background: var(--red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}
.footer-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 20px;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 12px;
}
.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--red);
}
.footer-links li { list-style: none; margin-bottom: 10px; }
.footer-links a {
  color: rgba(255,255,255,.7);
  font-size: 14px;
  transition: all .2s;
  display: inline-block;
}
.footer-links a:hover { color: var(--red-light); transform: translateX(4px); }
.footer-office h5 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--red-light);
  margin-bottom: 6px;
}
.footer-office p { font-size: 13px; color: rgba(255,255,255,.7); margin-bottom: 12px; }
.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}
.footer-social a {
  width: 38px;
  height: 38px;
  background: rgba(255,255,255,.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  transition: all .25s;
}
.footer-social a:hover { background: var(--red); transform: translateY(-3px); }
.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: rgba(255,255,255,.5);
}
.footer-bottom a { color: rgba(255,255,255,.6); }
.footer-bottom a:hover { color: var(--red-light); }

/* ── PAGE HERO (sub-page banner) ── */
.page-hero {
  position: relative;
  padding: 80px 0;
  background:
    linear-gradient(135deg, var(--red-deep) 0%, var(--red-dark) 60%, var(--red) 100%);
  color: var(--white);
  overflow: hidden;
  text-align: center;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(45deg, transparent 0 40px, rgba(255,255,255,.04) 40px 41px);
}
.page-hero-inner { position: relative; z-index: 1; }
.page-hero-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 900;
  text-transform: uppercase;
  line-height: 1;
  margin-bottom: 16px;
}
.page-hero-sub { font-size: 17px; opacity: .9; max-width: 640px; margin: 0 auto; }
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 10px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-top: 16px;
  opacity: .8;
}
.breadcrumb a { color: var(--white); }
.breadcrumb a:hover { color: var(--gold); }

/* ── PRODUCT LIST FILTER ── */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
  justify-content: center;
}
.filter-btn {
  padding: 10px 24px;
  background: var(--white);
  border: 2px solid var(--steel-100);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: all .25s;
  color: var(--ink-3);
}
.filter-btn:hover { border-color: var(--red); color: var(--red); }
.filter-btn.active { background: var(--red); border-color: var(--red); color: var(--white); }

/* ── PRODUCT DETAIL PAGE ── */
.product-hero {
  padding: 60px 0;
  background: linear-gradient(180deg, var(--steel-50) 0%, var(--white) 100%);
}
.product-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}
.product-hero-image {
  position: relative;
  aspect-ratio: 1/1;
  background:
    radial-gradient(circle at 50% 50%, var(--white) 0%, var(--steel-100) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  border: 1px solid var(--steel-100);
}
.product-hero-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(135deg, transparent 0 20px, rgba(27,63,160,.03) 20px 21px);
  border-radius: var(--radius-md);
}
.product-hero-image img { max-height: 80%; max-width: 80%; position: relative; z-index: 1; }

.product-detail-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--red);
  color: var(--white);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  border-radius: 2px;
  margin-bottom: 16px;
}
.product-detail-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 900;
  color: var(--blue-dark);
  text-transform: uppercase;
  line-height: 1;
  margin-bottom: 16px;
}
.product-detail-sub {
  font-size: 17px;
  color: var(--steel-500);
  margin-bottom: 24px;
}
.product-detail-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 32px;
}
.product-feat-item {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 10px 16px;
  background: var(--red-50);
  border-left: 3px solid var(--red);
  font-size: 14px;
  font-weight: 500;
}
.product-feat-item i { color: var(--red); }

.product-full-content {
  max-width: 980px;
  margin: 0 auto;
  padding: clamp(24px, 4vw, 40px);
  background: var(--white);
  border: 1px solid var(--steel-100);
  border-left: 4px solid var(--red);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  color: var(--ink-3);
  font-size: 16px;
  line-height: 1.8;
  white-space: pre-wrap;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.spec-table th {
  background: var(--red);
  color: var(--white);
  text-align: left;
  padding: 14px 20px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .05em;
  font-weight: 700;
}
.spec-table tr:nth-child(even) { background: var(--steel-50); }
.spec-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--steel-100);
  font-size: 14px;
}
.spec-table td:first-child {
  font-weight: 600;
  color: var(--ink-3);
  width: 40%;
}
.spec-table td:last-child { color: var(--blue-dark); }

/* ── APPLICATION GRID ── */
.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.app-card {
  position: relative;
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all .35s;
  cursor: pointer;
  border: 1px solid var(--steel-100);
  display: flex;
  flex-direction: column;
}
.app-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--red);
}
.app-card-image {
  aspect-ratio: 16/10;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.app-card-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(45deg, transparent 0 30px, rgba(255,255,255,.08) 30px 31px);
}
.app-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.5), transparent);
}
.app-card-1 .app-card-image { background: linear-gradient(135deg, #1B3FA0, #0F2566); }
.app-card-2 .app-card-image { background: linear-gradient(135deg, #CC1F2D, #7A0E1A); }
.app-card-3 .app-card-image { background: linear-gradient(135deg, #1B3FA0, #0A1845); }
.app-card-4 .app-card-image { background: linear-gradient(135deg, #0A1845, #1B3FA0, #2B52C8); }
.app-card-5 .app-card-image { background: linear-gradient(135deg, #D4A547, #9A1622); }
.app-card-6 .app-card-image { background: linear-gradient(135deg, #18336E, #1B3FA0); }
.app-card-icon {
  position: relative;
  z-index: 2;
  font-size: 64px;
  color: rgba(255,255,255,.9);
}
.app-card-number {
  position: absolute;
  top: 16px;
  right: 16px;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 32px;
  font-weight: 900;
  color: rgba(255,255,255,.3);
  z-index: 2;
}
.app-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.app-card-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--blue-dark);
  text-transform: uppercase;
  line-height: 1.1;
  margin-bottom: 8px;
}
.app-card-desc { font-size: 14px; color: var(--steel-500); margin-bottom: 20px; flex: 1; }
.app-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--red);
  transition: gap .25s;
}
.app-card-link:hover { gap: 14px; }

/* ── APPLICATION DETAIL ── */
.app-detail-hero {
  padding: 60px 0 40px;
  background: linear-gradient(180deg, var(--steel-50) 0%, var(--white) 100%);
}
.app-detail-content {
  max-width: 900px;
  margin: 0 auto;
}
.app-detail-content h3 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 28px;
  text-transform: uppercase;
  color: var(--blue-dark);
  margin: 40px 0 16px;
  padding-left: 16px;
  border-left: 4px solid var(--red);
}
.app-detail-content p { margin-bottom: 16px; color: var(--ink-3); }
.app-detail-content ul { padding-left: 20px; margin-bottom: 16px; }
.app-detail-content li { margin-bottom: 8px; color: var(--ink-3); }

.recommend-products {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 24px;
}
.recommend-card {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--steel-100);
  border-radius: var(--radius-md);
  transition: all .25s;
  align-items: center;
}
.recommend-card:hover {
  border-color: var(--red);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}
.recommend-card-img {
  width: 80px;
  height: 80px;
  background: var(--steel-50);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  padding: 8px;
}
.recommend-card-img img { max-width: 100%; max-height: 100%; }
.recommend-card-info { flex: 1; }
.recommend-card-info h5 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 20px;
  color: var(--blue-dark);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.recommend-card-info p { font-size: 13px; color: var(--steel-500); margin: 0; }

/* ── ABOUT / VALUES ── */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.value-card {
  position: relative;
  padding: 40px 28px;
  background: var(--white);
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid var(--steel-100);
  transition: all .35s;
  overflow: hidden;
}
.value-card::before {
  content: attr(data-letter);
  position: absolute;
  top: -20px;
  right: -20px;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 180px;
  font-weight: 900;
  color: var(--blue-50);
  line-height: 1;
  z-index: 0;
}
.value-card:hover { border-color: var(--red); transform: translateY(-6px); box-shadow: var(--shadow); }
.value-card:hover::before { color: var(--red-50); }
.value-card > * { position: relative; z-index: 1; }
.value-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--red);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}
.value-card .value-icon { background: var(--red); } /* uniform red */
.value-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--blue-dark);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.value-desc { font-size: 14px; color: var(--steel-500); }

/* ── CONTACT FORM ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
}
.contact-form {
  background: var(--white);
  padding: 40px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-3);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.form-label .req { color: var(--red); }
.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--steel-100);
  border-radius: var(--radius);
  font-size: 15px;
  font-family: inherit;
  background: var(--steel-50);
  transition: all .2s;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--red);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(204,31,45,.1);
}
.form-textarea { resize: vertical; min-height: 120px; }

.contact-info-card {
  background: linear-gradient(135deg, var(--red-deep) 0%, var(--red-dark) 60%, var(--red) 100%);
  color: var(--white);
  padding: 40px;
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}
.contact-info-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(45deg, transparent 0 30px, rgba(255,255,255,.05) 30px 31px);
}
.contact-info-card > * { position: relative; z-index: 1; }
.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}
.contact-info-icon {
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}
.contact-info-item h5 {
  font-size: 13px;
  letter-spacing: .1em;
  text-transform: uppercase;
  opacity: .8;
  margin-bottom: 4px;
}
.contact-info-item p { font-size: 15px; font-weight: 500; margin: 0; }

/* ── FAQ ── */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--steel-100);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all .25s;
}
.faq-item.open { border-color: var(--red); box-shadow: var(--shadow-sm); }
.faq-q {
  padding: 18px 24px;
  font-weight: 600;
  font-size: 15px;
  color: var(--blue-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  text-align: left;
  width: 100%;
}
.faq-q-icon {
  width: 28px;
  height: 28px;
  background: var(--steel-50);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .25s;
  color: var(--blue);
}
.faq-item.open .faq-q-icon {
  background: var(--red);
  color: var(--white);
  transform: rotate(45deg);
}
.faq-a {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: all .3s;
}
.faq-item.open .faq-a {
  padding: 0 24px 20px;
  max-height: 400px;
}
.faq-a p { color: var(--ink-3); font-size: 14px; }

/* ── REVEAL ANIMATION ── */
.reveal { opacity: 0; transform: translateY(28px); transition: all .7s cubic-bezier(.65,0,.35,1); }
.reveal.visible { opacity: 1; transform: none; }

/* ── BACK TO TOP ── */
.back-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 48px;
  height: 48px;
  background: var(--red);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-red);
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transition: all .3s;
}
.back-top.visible { opacity: 1; pointer-events: auto; }
.back-top:hover { background: var(--red-dark); transform: translateY(-3px); }

/* ── FLOATING ACTION (Zalo/Phone) ── */
.float-actions {
  position: fixed;
  left: 20px;
  bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 50;
}
.float-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  box-shadow: var(--shadow);
  font-size: 22px;
  transition: all .25s;
  position: relative;
}
.float-btn::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid currentColor;
  animation: pulseRing 2s ease-out infinite;
  opacity: 0;
}
@keyframes pulseRing {
  0% { transform: scale(1); opacity: .8; }
  100% { transform: scale(1.5); opacity: 0; }
}
.float-btn-phone { background: #FF6B35; }
.float-btn-phone-2 { background: #FF6B35; }
.float-btn-zalo { background: var(--blue); }
.float-btn:hover { transform: scale(1.1); }

/* ── PHONE LIST (2 numbers stacked) ── */
.phone-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0 !important;
}
.phone-list a {
  display: inline-block;
  text-decoration: none;
  color: inherit;
}
.phone-list a:hover { text-decoration: underline; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .nav-menu { display: none; }
  .nav-cta { display: none; }
  .hamburger { display: flex; }
  .hero-slide-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-slide-image { display: none; }
  .hero-stats { justify-content: center; }
  .solutions-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: 1fr; }
  .story-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .contact-grid { grid-template-columns: 1fr; }
  .product-hero-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-banner-inner { grid-template-columns: 1fr; }
  .recommend-products { grid-template-columns: 1fr; }
  .product-detail-features { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .products-grid, .app-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .top-bar-left { display: none; }
  .float-actions { left: 12px; bottom: 12px; }
  .float-btn { width: 44px; height: 44px; font-size: 18px; }
  .back-top { right: 12px; bottom: 12px; }
}

/* ============================================
   v3 ADDITIONS — mega-menu, placeholder, sub-pages
   ============================================ */

/* Logo image */
.logo-img { height: 44px; width: auto; display: block; }
.footer-logo-img { height: 56px; margin-bottom: 16px; filter: brightness(1.2); }

/* Mega-menu for Products */
.nav-mega {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 720px;
  max-width: 90vw;
  background: var(--white);
  border-top: 3px solid var(--red);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all .25s;
  padding: 32px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  z-index: 110;
}
.nav-item:hover .nav-mega {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-mega-col h6 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 16px;
  font-weight: 800;
  color: var(--red);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--steel-100);
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-mega-col h6 i { font-size: 14px; }
.nav-mega-col a {
  display: block;
  padding: 8px 0;
  font-size: 13.5px;
  color: var(--ink-3);
  font-weight: 500;
  line-height: 1.4;
  transition: all .2s;
  border-left: 0 solid var(--red);
  padding-left: 0;
}
.nav-mega-col a:hover {
  color: var(--red);
  padding-left: 8px;
  border-left-width: 2px;
}
.nav-mega-col a .code {
  display: inline-block;
  font-weight: 800;
  color: var(--blue);
  margin-right: 6px;
}

/* Product card placeholder (when no real image) */
.product-card-image.placeholder {
  background: linear-gradient(135deg, var(--blue-50) 0%, var(--steel-100) 100%);
  position: relative;
}
.product-card-image.placeholder::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(45deg, transparent 0 28px, rgba(27,63,160,.06) 28px 29px);
}
.placeholder-can {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.placeholder-can-svg {
  width: 120px;
  height: 120px;
  color: var(--blue);
  opacity: 0.7;
}
.placeholder-can-code {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 28px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.01em;
  text-align: center;
  padding: 4px 16px;
  background: var(--white);
  border: 2px solid var(--red);
  border-radius: 2px;
}
.product-card-image.placeholder.cat-waterproof { background: linear-gradient(135deg, #E1ECFE, #B7D0F2); }
.product-card-image.placeholder.cat-waterproof .placeholder-can-svg { color: var(--blue-dark); }
.product-card-image.placeholder.cat-epoxy { background: linear-gradient(135deg, #FFE8EA, #F5BCC1); }
.product-card-image.placeholder.cat-epoxy .placeholder-can-svg { color: var(--red-dark); }
.product-card-image.placeholder.cat-specialty { background: linear-gradient(135deg, #EEF2FB, #C9D6F0); }

/* Product hero placeholder (large) */
.product-hero-image.placeholder {
  background: linear-gradient(135deg, var(--blue-50) 0%, var(--steel-100) 100%);
}
.product-hero-image.placeholder .placeholder-can-svg {
  width: 200px;
  height: 200px;
}
.product-hero-image.placeholder .placeholder-can-code {
  font-size: 36px;
  padding: 6px 20px;
  border-width: 3px;
}

/* Category section heading in products page */
.category-group { margin-bottom: 60px; }
.category-group:last-child { margin-bottom: 0; }
.category-group-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--steel-100);
}
.category-group-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 32px;
  font-weight: 800;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 14px;
}
.category-group-title::before {
  content: '';
  width: 4px;
  height: 28px;
  background: var(--red);
  display: block;
}
.category-group-count {
  font-size: 13px;
  font-weight: 600;
  color: var(--steel-500);
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* Distribution page — regions grid */
.regions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.region-card {
  background: var(--white);
  border: 1px solid var(--steel-100);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: all .25s;
  position: relative;
  overflow: hidden;
}
.region-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--red), var(--red-light));
}
.region-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--red);
}
.region-icon {
  width: 52px;
  height: 52px;
  background: var(--red-50);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--red);
  font-size: 22px;
  margin-bottom: 16px;
}
.region-card h4 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: var(--ink);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.region-card p { font-size: 14px; color: var(--steel-500); margin: 0; }

/* Knowledge / News cards */
.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.knowledge-card {
  background: var(--white);
  border: 1px solid var(--steel-100);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all .3s;
  display: flex;
  flex-direction: column;
}
.knowledge-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.knowledge-card-img {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--red-deep), var(--red-light));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.knowledge-card-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(45deg, transparent 0 25px, rgba(255,255,255,.06) 25px 26px);
}
.knowledge-card-img i { font-size: 48px; color: rgba(255,255,255,.9); position: relative; z-index: 1; }
.knowledge-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.knowledge-card-cat {
  font-size: 11px;
  font-weight: 700;
  color: var(--red);
  letter-spacing: .15em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.knowledge-card-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: 8px;
}
.knowledge-card-text { font-size: 14px; color: var(--steel-500); margin-bottom: 16px; flex: 1; }

/* Coming-soon block (used in placeholder pages) */
.coming-soon {
  text-align: center;
  padding: 60px 32px;
  max-width: 680px;
  margin: 0 auto;
  background: var(--steel-50);
  border-radius: var(--radius-md);
  border: 2px dashed var(--steel-300);
}
.coming-soon-icon {
  font-size: 64px;
  color: var(--blue);
  margin-bottom: 20px;
  opacity: 0.6;
}
.coming-soon h3 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 32px;
  font-weight: 800;
  color: var(--ink);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.coming-soon p {
  font-size: 16px;
  color: var(--steel-500);
  margin-bottom: 24px;
}

/* FAQ accordion (improved) */
.faq-section { max-width: 820px; margin: 0 auto; }
.faq-item.open .faq-q { color: var(--red); }

/* Value sub-subtitle */
.value-sub {
  font-size: 14px;
  font-weight: 600;
  color: var(--red);
  text-transform: uppercase;
  letter-spacing: .15em;
  margin-bottom: 10px;
}

/* Responsive: mega-menu collapses on tablet */
@media (max-width: 1024px) {
  .nav-mega { display: none; }
  .regions-grid { grid-template-columns: repeat(2, 1fr); }
  .knowledge-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .regions-grid { grid-template-columns: 1fr; }
  .logo-img { height: 38px; }
}

/* ============================================
   PRODUCT PAGE TABS
   ============================================ */
.product-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 48px;
  border-bottom: 2px solid var(--steel-100);
  position: sticky;
  top: 80px;
  background: var(--white);
  z-index: 10;
  padding-top: 8px;
}
.tab-btn {
  position: relative;
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .03em;
  text-transform: uppercase;
  color: var(--steel-500);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all .25s;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}
.tab-btn i { font-size: 13px; }
.tab-btn::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .25s;
}
.tab-btn:hover { color: var(--red); }
.tab-btn.active {
  color: var(--red);
}
.tab-btn.active::after { transform: scaleX(1); }
.tab-btn .tab-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  background: var(--steel-100);
  color: var(--steel-500);
  font-size: 11px;
  border-radius: 11px;
  font-weight: 700;
  transition: all .2s;
}
.tab-btn.active .tab-count {
  background: var(--red);
  color: var(--white);
}
.tab-btn:hover .tab-count {
  background: var(--red-50);
  color: var(--red);
}

/* btn outline blue (for "Xem tất cả") */
.btn-outline-blue {
  background: transparent;
  color: var(--blue);
  border: 2px solid var(--blue);
}
.btn-outline-blue:hover { background: var(--blue); color: var(--white); transform: translateY(-2px); }

/* Single-category view header (when a specific tab is active) */
.tab-content-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--steel-100);
}
.tab-content-head h2 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 32px;
  font-weight: 800;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 14px;
}
.tab-content-head h2::before {
  content: '';
  width: 4px;
  height: 28px;
  background: var(--red);
  display: block;
}
.tab-content-head .count-info {
  font-size: 13px;
  font-weight: 600;
  color: var(--steel-500);
  letter-spacing: .1em;
  text-transform: uppercase;
}

@media (max-width: 768px) {
  .product-tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    scrollbar-width: thin;
    margin-left: -20px;
    margin-right: -20px;
    padding-left: 20px;
    padding-right: 20px;
  }
  .tab-btn { padding: 12px 16px; font-size: 13px; }
}