/* ============================================================
   AMMY / KORAH — Design System
   Palette: #0D0D0D | #C8A96E | #F5F0E8 | #1A7A78 | #FFFFFF
   ============================================================ */

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

:root {
  color-scheme: dark;
  --black:      #0D0D0D;
  --black-2:    #141414;
  --black-3:    #1E1E1E;
  --black-4:    #2A2A2A;
  --gold:       #C8A96E;
  --gold-light: #DFC08A;
  --gold-dark:  #A08040;
  --ivory:      #F5F0E8;
  --ivory-dim:  #D8D0C0;
  --teal:       #1A7A78;
  --teal-light: #22A09D;
  --teal-dark:  #125858;
  --white:      #FFFFFF;
  --gray-1:     #9E9E9E;
  --gray-2:     #555555;

  --font-head: 'Montserrat', -apple-system, sans-serif;
  --font-body: 'Montserrat', -apple-system, sans-serif;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;

  --transition: 0.25s ease;

  --max-width:  1280px;
  --header-h:   104px;
}

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

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

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 100px 0; }
.section--sm { padding: 60px 0; }
.section--lg { padding: 132px 0; }

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 0.55em;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

.text-gold    { color: var(--gold); }
.text-teal    { color: var(--teal-light); }
.text-ivory   { color: var(--ivory); }
.text-muted   { color: var(--gray-1); }
.text-center  { text-align: center; }

.lead {
  font-size: 1.125rem;
  color: var(--ivory-dim);
  max-width: 720px;
}

.section-label {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}

.section-title {
  margin-bottom: 16px;
}

.section-intro {
  color: var(--ivory-dim);
  margin-bottom: 48px;
  max-width: 640px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 7px;
  font-family: var(--font-head);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn--gold {
  background: var(--gold);
  color: var(--black);
}
.btn--gold:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(200,169,110,0.28); }

.btn--outline {
  border: 1px solid var(--gold);
  color: var(--gold);
}
.btn--outline:hover { background: var(--gold); color: var(--black); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(200,169,110,0.22); }

.btn--teal {
  background: var(--teal);
  color: var(--white);
}
.btn--teal:hover { background: var(--teal-light); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(26,122,120,0.3); }

.btn--ghost {
  color: var(--ivory);
  border: 1px solid var(--black-4);
}
.btn--ghost:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); box-shadow: 0 8px 16px rgba(0,0,0,0.3); }

.btn--sm { padding: 8px 20px; font-size: 0.8125rem; }
.btn--lg { padding: 16px 36px; font-size: 1rem; }

/* ── Header / Nav ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(13,13,13,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--black-4);
  display: flex;
  align-items: center;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-right: 28px;
}

.nav__logo-img {
  height: 40px;
  width: auto;
}

.nav__logo-text {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--white);
}

.nav__logo-text span { color: var(--gold); }

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

.nav__item { position: relative; }

.nav__link {
  display: block;
  padding: 10px 16px;
  font-family: var(--font-head);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ivory-dim);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav__link:hover,
.nav__link.active { color: var(--gold); background: rgba(200,169,110,0.08); }

/* Dropdown */
.nav__dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 220px;
  background: var(--black-2);
  border: 1px solid var(--black-4);
  border-radius: var(--radius-md);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all var(--transition);
  z-index: 100;
}

.nav__item:hover .nav__dropdown,
.nav__item:focus-within .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav__dropdown-link {
  display: block;
  padding: 10px 20px;
  font-size: 0.875rem;
  color: var(--ivory-dim);
  transition: color var(--transition), background var(--transition);
}

.nav__dropdown-link:hover {
  color: var(--gold);
  background: rgba(200,169,110,0.06);
}

.nav__cta { margin-left: 12px; }

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 8px;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ivory);
  border-radius: 2px;
  transition: all var(--transition);
}

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

/* Mobile nav */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  background: var(--black-2);
  border-top: 1px solid var(--black-4);
  padding: 24px;
  z-index: 999;
  overflow-y: auto;
  max-height: calc(100vh - var(--header-h));
}

.nav__mobile.open { display: block; }

.nav__mobile-link {
  display: block;
  padding: 12px 0;
  font-family: var(--font-head);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--ivory-dim);
  transition: color var(--transition);
}

.nav__mobile-link:hover { color: var(--gold); }

.nav__mobile > .nav__mobile-link {
  border-bottom: 1px solid var(--black-4);
}

.nav__mobile-group { border-bottom: 1px solid var(--black-4); }

.nav__mobile-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.nav__mobile-row .nav__mobile-link { flex: 1; }

.nav__mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  color: var(--ivory-dim);
  font-size: 1rem;
  line-height: 1;
  transition: transform var(--transition), color var(--transition);
}

.nav__mobile-toggle.open {
  transform: rotate(180deg);
  color: var(--gold);
}

.nav__mobile-sub {
  max-height: 0;
  overflow: hidden;
  padding-left: 16px;
  transition: max-height 0.3s ease;
}

.nav__mobile-sub.open {
  max-height: 320px;
  margin: 0 0 12px;
}

.nav__mobile-sub-link {
  display: block;
  padding: 8px 0;
  font-size: 0.875rem;
  color: var(--gray-1);
  transition: color var(--transition);
}
.nav__mobile-sub-link:hover { color: var(--gold); }

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--black);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 50%, rgba(26,122,120,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 20% 80%, rgba(200,169,110,0.06) 0%, transparent 60%);
}

.hero__grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200,169,110,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,169,110,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: 80px 0;
}

.hero__brand-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(200,169,110,0.1);
  border: 1px solid rgba(200,169,110,0.25);
  border-radius: 100px;
  font-size: 0.75rem;
  font-family: var(--font-head);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 24px;
}

.hero__brand-tag::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 24px;
}

.hero__title .line-gold { color: var(--gold); display: block; }
.hero__title .line-teal { color: var(--teal-light); }

.hero__desc {
  font-size: 1.125rem;
  color: var(--ivory-dim);
  max-width: 560px;
  margin-bottom: 40px;
  line-height: 1.8;
}

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

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--gray-1);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: bounce 2s infinite;
}

.hero__scroll-arrow {
  width: 20px; height: 20px;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(45deg);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}

/* ── Divider ── */
.divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--black-4), transparent);
}

.divider--gold {
  height: 2px;
  background: linear-gradient(to right, transparent, var(--gold), transparent);
  opacity: 0.4;
}

/* ── Brand strip ── */
.brand-strip {
  background: var(--black-2);
  padding: 32px 0;
  border-top: 1px solid var(--black-4);
  border-bottom: 1px solid var(--black-4);
}

.brand-strip__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.brand-strip__item {
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-1);
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-strip__item::before {
  content: '';
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.6;
}

/* ── Cards ── */
.card {
  background: var(--black-2);
  border: 1px solid var(--black-4);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: rgba(200,169,110,0.3);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
}

.card__image {
  aspect-ratio: 3/2;
  background: var(--black-3);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.card:hover .card__image img { transform: scale(1.04); }

.card__image-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  height: 100%;
  border: 1px solid rgba(200,169,110,0.18);
  box-sizing: border-box;
}

.card__image-placeholder::before {
  content: '';
  display: block;
  width: 28px;
  height: 1px;
  background: rgba(200,169,110,0.35);
  margin-bottom: 4px;
}

.card__image-placeholder span {
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--gray-2);
  text-transform: uppercase;
  opacity: 0.6;
}

.card__body { padding: 24px; }
.card__footer {
  padding: 16px 24px;
  border-top: 1px solid var(--black-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ── Product Card ── */
.product-card { display: block; cursor: pointer; }

.product-card__badges {
  position: absolute;
  top: 12px; left: 12px;
  display: flex; gap: 6px; flex-wrap: wrap;
}

.badge {
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.6875rem;
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.badge--brand {
  background: rgba(200,169,110,0.15);
  color: var(--gold);
  border: 1px solid rgba(200,169,110,0.3);
}
.badge--brand-logo {
  background: none;
  border: none;
  padding: 0 4px;
  display: inline-flex;
  align-items: center;
}
.product-card__badges .badge--brand-logo img,
.product-detail__badges .badge--brand-logo img,
.badge--brand-logo img {
  height: 14px !important;
  width: auto !important;
  max-width: 90px;
  object-fit: contain;
  display: block;
}

.badge--active {
  background: rgba(26,122,120,0.2);
  color: var(--teal-light);
  border: 1px solid rgba(26,122,120,0.4);
}

.badge--coming {
  background: rgba(245,240,232,0.1);
  color: var(--ivory);
  border: 1px solid rgba(245,240,232,0.2);
}

.badge--disc {
  background: rgba(136,136,136,0.1);
  color: var(--gray-1);
  border: 1px solid rgba(136,136,136,0.25);
}

.product-card__name {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 6px;
}

.product-card__tagline {
  font-size: 0.875rem;
  color: var(--gray-1);
  line-height: 1.5;
  margin-bottom: 12px;
}

.product-card__tech {
  display: flex; gap: 6px; flex-wrap: wrap;
}

.tech-chip {
  padding: 2px 8px;
  background: rgba(26,122,120,0.1);
  border: 1px solid rgba(26,122,120,0.25);
  border-radius: 100px;
  font-size: 0.6875rem;
  color: var(--teal-light);
  font-family: var(--font-head);
  font-weight: 600;
}

/* ── Grid ── */
.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--auto { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }

/* ── Filter Bar ── */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: 100px;
  font-family: var(--font-head);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gray-1);
  border: 1px solid var(--black-4);
  transition: all var(--transition);
}

.filter-btn:hover {
  color: var(--ivory);
  border-color: var(--gray-2);
}

.filter-btn.active {
  background: var(--gold);
  color: var(--black);
  border-color: var(--gold);
}

/* ── Page Hero ── */
.page-hero {
  padding: 96px 0 72px;
  background: var(--black);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--gold), transparent);
  opacity: 0.3;
}

.page-hero__label {
  font-size: 1rem;
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}

.page-hero__title { margin-bottom: 16px; }

.page-hero__desc {
  color: var(--ivory-dim);
  max-width: 640px;
  font-size: 1.0625rem;
}

.page-hero--tech {
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  min-height: 560px;
  display: flex;
  align-items: center;
}
.page-hero--tech::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,13,13,0.72) 0%, rgba(13,13,13,0.8) 35%, rgba(13,13,13,0.93) 75%, rgba(13,13,13,0.98) 100%);
  z-index: 0;
}
.page-hero--about,
.page-hero--vision,
.page-hero--dealers {
  background-image: url('../assets/hero/hero-global-network.png');
  background-size: contain;
  background-position: center center;
  background-repeat: no-repeat;
  background-color: var(--black);
  aspect-ratio: 1672 / 941;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
}
.page-hero--about::after,
.page-hero--vision::after,
.page-hero--dealers::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,13,13,0.15) 0%, rgba(13,13,13,0.35) 45%, rgba(13,13,13,0.88) 88%, rgba(13,13,13,0.96) 100%);
  z-index: 0;
}
.page-hero--about .container,
.page-hero--tech .container,
.page-hero--vision .container,
.page-hero--dealers .container {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-bottom: 40px;
}
.page-hero--about .page-hero__title,
.page-hero--vision .page-hero__title,
.page-hero--dealers .page-hero__title {
  color: var(--ivory);
  text-shadow: 0 2px 10px rgba(0,0,0,0.75);
}
.page-hero--about .page-hero__desc,
.page-hero--vision .page-hero__desc,
.page-hero--dealers .page-hero__desc {
  color: var(--ivory-dim);
  font-weight: 600;
  text-shadow: 0 1px 6px rgba(0,0,0,0.7);
}
.page-hero--about .page-hero__label,
.page-hero--vision .page-hero__label,
.page-hero--dealers .page-hero__label {
  text-shadow: 0 1px 6px rgba(0,0,0,0.6);
}

.page-hero__mobile-img { display: none; }

@media (max-width: 768px) {
  .page-hero--tech {
    min-height: 380px;
    background-position: center center;
  }
  .page-hero--about,
  .page-hero--vision,
  .page-hero--dealers {
    background-image: none;
    aspect-ratio: auto;
    min-height: 0;
    display: block;
    padding: 0 0 40px;
  }
  .page-hero--about::after,
  .page-hero--vision::after,
  .page-hero--dealers::after {
    display: none;
  }
  .page-hero--about .page-hero__mobile-img,
  .page-hero--vision .page-hero__mobile-img,
  .page-hero--dealers .page-hero__mobile-img {
    display: block;
    width: 100%;
    height: auto;
    margin-bottom: 24px;
  }
  .page-hero--about .container,
  .page-hero--vision .container,
  .page-hero--dealers .container {
    padding-bottom: 0;
  }
  .page-hero--about .page-hero__title,
  .page-hero--vision .page-hero__title,
  .page-hero--dealers .page-hero__title,
  .page-hero--about .page-hero__desc,
  .page-hero--vision .page-hero__desc,
  .page-hero--dealers .page-hero__desc,
  .page-hero--about .page-hero__label,
  .page-hero--vision .page-hero__label,
  .page-hero--dealers .page-hero__label {
    text-shadow: none;
  }
}

/* ── Technology ── */
.tech-card {
  background: var(--black-2);
  border: 1px solid var(--black-4);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}

.tech-card:hover {
  border-color: rgba(26,122,120,0.4);
  transform: translateY(-4px);
}

.tech-card__icon {
  width: 56px; height: 56px;
  background: rgba(26,122,120,0.12);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--teal-light);
}

.tech-card__icon svg { width: 28px; height: 28px; }

.tech-card__title {
  font-size: 1.125rem;
  color: var(--white);
  margin-bottom: 12px;
}

.tech-card__desc {
  font-size: 0.9375rem;
  color: var(--gray-1);
  line-height: 1.7;
}

.tech-card__accent {
  position: absolute;
  bottom: 0; right: 0;
  width: 120px; height: 120px;
  background: radial-gradient(circle, rgba(26,122,120,0.1) 0%, transparent 70%);
  pointer-events: none;
}

/* ── Spec Table ── */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.spec-table tr {
  border-bottom: 1px solid var(--black-4);
}

.spec-table tr:last-child { border-bottom: none; }

.spec-table td {
  padding: 14px 0;
  vertical-align: top;
}

.spec-table td:first-child {
  color: var(--gray-1);
  width: 45%;
  font-weight: 500;
}

.spec-table td:last-child {
  color: var(--ivory);
  font-weight: 600;
}

/* ── Compare Table (tra cứu thông số nhiều model) ── */
.compare-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--black-4);
  border-radius: var(--radius-md);
}
.compare-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 0.875rem;
  white-space: nowrap;
}
.compare-table th,
.compare-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--black-4);
}
.compare-table th {
  background: var(--black-3);
  color: var(--gold);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  position: sticky;
  top: 0;
}
.compare-table th:first-child,
.compare-table td:first-child {
  color: var(--ivory-dim);
  font-weight: 500;
  white-space: normal;
}
.compare-table td { color: var(--ivory); }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tr:hover td { background: rgba(200,169,110,0.04); }

/* ── Accordion ── */
.accordion { border: 1px solid var(--black-4); border-radius: var(--radius-md); overflow: hidden; }

.accordion__item { border-bottom: 1px solid var(--black-4); }
.accordion__item:last-child { border-bottom: none; }

.accordion__header {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  background: var(--black-2);
  color: var(--ivory);
  font-family: var(--font-head);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: background var(--transition), color var(--transition);
}

.accordion__header:hover { background: var(--black-3); color: var(--gold); }

.accordion__header.open { color: var(--gold); }

.accordion__icon {
  width: 20px; height: 20px;
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--gold);
}

.accordion__header.open .accordion__icon { transform: rotate(180deg); }

.accordion__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  background: var(--black-2);
}

.accordion__body.open { max-height: 600px; }

.accordion__content { padding: 0 24px 24px; color: var(--ivory-dim); font-size: 0.9375rem; line-height: 1.8; }

/* ── Info Block ── */
.info-block {
  background: var(--black-3);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 24px;
  color: var(--ivory-dim);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.info-block--teal {
  border-left-color: var(--teal);
}

/* ── Contact Form ── */
.form-group { margin-bottom: 20px; }

.form-label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ivory-dim);
  font-family: var(--font-head);
  letter-spacing: 0.03em;
}

.form-control {
  width: 100%;
  background: var(--black-3);
  border: 1px solid var(--black-4);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--ivory);
  transition: border-color var(--transition);
  resize: vertical;
}

.form-control:focus {
  outline: none;
  border-color: var(--gold);
}

.form-control::placeholder { color: var(--gray-2); }

/* ── Footer ── */
.site-footer {
  background: var(--black-2);
  border-top: 1px solid var(--black-4);
  padding: 80px 0 36px;
}

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

.footer__brand-name {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 4px;
}

.footer__brand-name span { color: var(--gold); }

.footer__tagline {
  font-size: 0.875rem;
  color: var(--gray-1);
  margin-bottom: 20px;
  line-height: 1.6;
}

.footer__iso {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(200,169,110,0.08);
  border: 1px solid rgba(200,169,110,0.2);
  border-radius: 100px;
  font-size: 0.75rem;
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.footer__col-title {
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ivory);
  margin-bottom: 16px;
}

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

.footer__link {
  font-size: 0.875rem;
  color: var(--gray-1);
  transition: color var(--transition);
}
.footer__link:hover { color: var(--gold); }

.footer__bottom {
  border-top: 1px solid var(--black-4);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer__copy {
  font-size: 0.8125rem;
  color: var(--gray-2);
}

.footer__copy a { color: var(--gold); }

/* ── Product Detail ── */
.product-detail { padding: 60px 0 80px; }

.product-detail__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--gray-1);
  margin-bottom: 40px;
  transition: color var(--transition);
}

.product-detail__back:hover { color: var(--gold); }

.product-detail__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.product-detail__image-wrap {
  background: var(--black-2);
  border: 1px solid var(--black-4);
  border-radius: var(--radius-lg);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.product-detail__image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 24px;
  filter: drop-shadow(0 18px 30px rgba(0,0,0,0.42));
  -webkit-box-reflect: below 2px linear-gradient(transparent 65%, rgba(255,255,255,0.05));
}

.product-detail__brand {
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
}
.product-detail__brand--logo {
  margin-bottom: 12px;
}
.product-detail__brand--logo img {
  height: 30px;
  width: auto;
  display: block;
}

.product-detail__name {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 12px;
}

.product-detail__tagline {
  color: var(--ivory-dim);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.product-detail__badges { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 32px; }

.product-detail__tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--black-4);
  margin-bottom: 32px;
}

.tab-btn {
  padding: 12px 24px;
  font-family: var(--font-head);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gray-1);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--transition), border-color var(--transition);
}

.tab-btn:hover { color: var(--ivory); }
.tab-btn.active { color: var(--gold); border-bottom-color: var(--gold); }

.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ── Not Found ── */
.not-found {
  text-align: center;
  padding: 80px 24px;
}

.not-found__icon {
  width: 80px; height: 80px;
  margin: 0 auto 24px;
  color: var(--gray-2);
}

/* ── Highlight Row ── */
.highlight-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.highlight-row--reverse { direction: rtl; }
.highlight-row--reverse > * { direction: ltr; }

.highlight-row__visual {
  background: var(--black-2);
  border: 1px solid var(--black-4);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
}

.highlight-row__content .section-label { display: block; margin-bottom: 12px; }
.highlight-row__content h3 { margin-bottom: 16px; }
.highlight-row__content p { color: var(--ivory-dim); margin-bottom: 24px; }

/* ── Stats ── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--black-4);
  border: 1px solid var(--black-4);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.stat {
  background: var(--black-2);
  padding: 40px 32px;
  text-align: center;
}

.stat__value {
  font-family: var(--font-head);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gold);
  display: block;
  line-height: 1;
  margin-bottom: 8px;
}

.stat__label {
  font-size: 0.875rem;
  color: var(--gray-1);
}

/* ── Timeline ── */
.timeline { position: relative; padding-left: 32px; }

.timeline::before {
  content: '';
  position: absolute;
  left: 8px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--gold), transparent);
}

.timeline__item {
  position: relative;
  padding-bottom: 40px;
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: -28px; top: 6px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--gold);
  border: 2px solid var(--black);
}

.timeline__year {
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-bottom: 6px;
}

.timeline__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}

.timeline__desc { font-size: 0.9375rem; color: var(--gray-1); }

/* ── No Result ── */
.no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px 0;
  color: var(--gray-1);
}

/* ── Loader ── */
.loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px 0;
  color: var(--gray-1);
}

/* ── Breadcrumb ── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--gray-1);
  margin-bottom: 32px;
}

.breadcrumb a { color: var(--gray-1); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb__sep { opacity: 0.4; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .product-detail__layout { grid-template-columns: 1fr; gap: 40px; }
  .highlight-row { grid-template-columns: 1fr; gap: 40px; }
  .highlight-row--reverse { direction: ltr; }
}

@media (max-width: 768px) {
  :root { --header-h: 68px; }

  .nav__links, .nav__cta { display: none; }
  .nav__hamburger { display: flex; }

  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .grid--auto { grid-template-columns: 1fr; }

  .hero { min-height: 70vh; }
  .page-hero--about,
  .page-hero--vision {
    min-height: 480px;
    background-position: center center;
  }
  .section { padding: 56px 0; }
  .section--lg { padding: 72px 0; }

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

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

  .filter-bar { gap: 6px; }
  .filter-btn { padding: 7px 14px; font-size: 0.75rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero__actions { flex-direction: column; }
  .btn--lg { width: 100%; justify-content: center; }
  .stats-row { grid-template-columns: 1fr; }
}

/* ── Utility ── */
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-48 { margin-bottom: 48px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8  { gap: 8px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }

.hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* ============================================================
   V2 — Hero Carousel (kiểu Lab Gruppen, ảnh KORAH)
   Thay ảnh thật tại: assets/banners/hero-*.jpg (1920x900)
   ============================================================ */
.hero-carousel {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  max-height: 820px;
  overflow: hidden;
  background: var(--black-2);
}

.hc__slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center right;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease, visibility 0.8s;
}
.hc__slide.active { opacity: 1; visibility: visible; position: relative; }

.hc__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
    rgba(13,13,13,0.92) 0%,
    rgba(13,13,13,0.72) 45%,
    rgba(13,13,13,0.25) 100%);
}

.hc__content {
  position: relative;
  z-index: 2;
  max-width: 620px;
  padding: 96px 0;
}

.hc__title {
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  margin: 16px 0;
  color: var(--white);
}
.hc__title .line-gold { color: var(--gold); }

.hc__desc {
  color: var(--ivory-dim);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 540px;
}

.hc__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--black-4);
  background: rgba(13,13,13,0.6);
  color: var(--ivory);
  font-size: 1.6rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.hc__arrow:hover { border-color: var(--gold); color: var(--gold); }
.hc__arrow--prev { left: 20px; }
.hc__arrow--next { right: 20px; }

.hc__dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  gap: 10px;
}
.hc__dot {
  width: 32px;
  height: 4px;
  border-radius: 2px;
  background: var(--black-4);
  transition: background var(--transition);
}
.hc__dot.active { background: var(--gold); }

/* ── Segment cards: giải pháp theo nhu cầu ── */
.segment-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 24px;
}

.segment-card {
  display: flex;
  flex-direction: column;
  background: var(--black-2);
  border: 1px solid var(--black-4);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}
.segment-card:hover { border-color: var(--gold); transform: translateY(-3px); }
.segment-card--roy:hover { border-color: var(--teal-light); }

.segment-card__media {
  position: relative;
  min-height: 220px;
  background-size: cover;
  background-position: center;
}
.segment-card__scrim {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, var(--black-2) 100%);
}

.segment-card__body { padding: 32px; display: flex; flex-direction: column; gap: 14px; flex: 1; }

.segment-card__eyebrow {
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-1);
}

.segment-card__brand {
  font-family: var(--font-head);
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.segment-card__desc { color: var(--ivory-dim); line-height: 1.75; }

.segment-card__list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 8px; }
.segment-card__list li {
  position: relative;
  padding-left: 20px;
  color: var(--ivory-dim);
  font-size: 0.9rem;
}
.segment-card__list li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 2px;
  background: var(--gold);
}
.segment-card--roy .segment-card__list li::before { background: var(--teal-light); }

.segment-card .btn { align-self: flex-start; margin-top: auto; }

@media (max-width: 900px) {
  .segment-grid { grid-template-columns: 1fr; }
  .hc__arrow { display: none; }
  .hero-carousel { min-height: 78vh; }
  .hc__content { padding: 64px 0 88px; }
  .hc__slide { background-position: center; }
}

@media (prefers-reduced-motion: reduce) {
  .hc__slide { transition: none; }
  .hc__slide.active, .hc__glow { animation: none; }
}

/* ── V2.1 — Slogan chạy theo slide + badge ISO ── */
.hc__slogan {
  font-family: var(--font-head);
  font-size: clamp(0.85rem, 1.6vw, 1.05rem);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  padding-left: 18px;
  border-left: 3px solid var(--gold);
  opacity: 0;
  transform: translateY(12px);
}
.hc__slide.active .hc__slogan {
  animation: sloganIn 0.7s ease 0.25s forwards;
}
@keyframes sloganIn {
  to { opacity: 1; transform: translateY(0); }
}

.hc__badge {
  position: absolute;
  bottom: 26px;
  left: 24px;
  z-index: 5;
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ivory-dim);
  background: rgba(13,13,13,0.65);
  border: 1px solid var(--black-4);
  border-radius: 100px;
  padding: 8px 18px;
  backdrop-filter: blur(8px);
}

@media (max-width: 768px) {
  .hc__badge {
    left: 50%;
    transform: translateX(-50%);
    width: max-content;
    max-width: calc(100% - 32px);
    text-align: center;
    bottom: 52px;
    font-size: 0.62rem;
  }
  .hc__dots { bottom: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  .hc__slogan { opacity: 1; transform: none; animation: none; }
}

/* ── V2.2 — Logo thương hiệu ── */
.nav__logo-img { height: 34px; width: auto; }
.segment-card__logos {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 6px 0;
}
@media (max-width: 480px) {
  .nav__logo-img { height: 28px; }
}

/* ── V2.3 — Slogan banner: tiêu đề nổi bật nhất ── */
.slogan-banner {
  padding: 88px 0 72px;
  background: linear-gradient(180deg, var(--black) 0%, #121110 100%);
  border-bottom: 1px solid var(--black-4);
  text-align: center;
  position: relative;
}
.slogan-banner__title {
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 3.4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #FFFFFF;
  margin-bottom: 28px;
}
.slogan-banner__mark {
  font-family: var(--font-head);
  font-size: 1.75rem;
  line-height: 1;
  letter-spacing: 0.3em;
  color: #E9C888;
  text-shadow: 0 0 12px rgba(233,200,136,0.45);
  margin-bottom: 22px;
}
.slogan-banner__text {
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 4.2vw, 2.9rem);
  font-weight: 800;
  line-height: 1.35;
  color: var(--white);
  max-width: 1050px;
  margin: 0 auto;
}
.slogan-banner__text--radiant {
  background: linear-gradient(90deg, #E9C888 0%, #C8A96E 30%, #F5E0B0 50%, #C8A96E 70%, #E9C888 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--gold);
  animation: radiantShine 6s linear infinite;
}
@keyframes radiantShine {
  0% { background-position: 0% center; }
  100% { background-position: 200% center; }
}
.slogan-banner__sep {
  display: inline-block;
  margin: 0 22px;
  color: var(--gold);
}
.slogan-banner__by {
  margin-top: 24px;
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-1);
}
@media (prefers-reduced-motion: reduce) {
  .slogan-banner__text--radiant { animation: none; }
}
@media (max-width: 768px) {
  .slogan-banner { padding: 60px 0 48px; }
  .slogan-banner__sep { display: block; margin: 10px auto; }
}

/* ── V2.4 — Hero kiểu Lab: ảnh sản phẩm nổi + quầng sáng sân khấu ── */
.hero-carousel { max-height: none; min-height: calc(100vh - var(--header-h)); }

.hc__inner {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hc__glow {
  position: absolute;
  top: 50%; right: 8%;
  width: 46vw; height: 46vw;
  max-width: 700px; max-height: 700px;
  transform: translateY(-50%);
  background: radial-gradient(circle, rgba(200,169,110,0.16) 0%, rgba(200,169,110,0.05) 40%, transparent 70%);
  pointer-events: none;
  animation: heroGlowDrift 16s ease-in-out infinite;
}
@keyframes heroGlowDrift {
  0%, 100% { transform: translateY(-50%) translateX(0) scale(1); opacity: 1; }
  50% { transform: translateY(-52%) translateX(-1.5%) scale(1.06); opacity: 0.85; }
}

/* Chiều sâu: vignette rất nhẹ + dịch chuyển cực chậm cho ảnh nền hero (giữ nguyên tỉ lệ cover, không đổi ảnh gốc) */
.hc__slide.active {
  animation: heroSlowPan 26s ease-in-out infinite alternate;
}
.hc__slide::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 45%, rgba(0,0,0,0.32) 100%);
  pointer-events: none;
}
@keyframes heroSlowPan {
  from { background-position: center right; }
  to { background-position: 54% center; }
}

.hc__product {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hc__product img {
  width: 100%;
  max-width: 640px;
  height: auto;
  filter: drop-shadow(0 30px 50px rgba(0,0,0,0.6));
  opacity: 0;
  transform: translateY(24px) scale(0.97);
}
.hc__slide.active .hc__product img {
  animation: prodIn 0.9s ease 0.35s forwards;
}
@keyframes prodIn {
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.nav__logo-img--ammy {
  height: 82px;
  width: auto;
  background: radial-gradient(circle at 50% 42%, #ffffff 0%, #eef2f6 70%, transparent 100%);
  border-radius: 8px;
  padding: 3px 5px;
}
.nav__logo-text-ammy {
  font-family: 'Times New Roman', Times, serif;
  font-weight: 800;
  letter-spacing: 0.03em;
  margin-left: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.3;
}
.nav__logo-text-ammy__line1 {
  color: var(--gold);
  font-size: 0.9375rem;
  white-space: nowrap;
}
.nav__logo-text-ammy__line2 {
  color: #D64545;
  font-size: 0.9375rem;
  white-space: nowrap;
}

@media (max-width: 900px) {
  .hc__inner { grid-template-columns: 1fr; gap: 20px; }
  .hc__product { order: -1; padding-top: 24px; }
  .hc__product img { max-width: 78vw; }
  .hc__content { padding: 0 0 96px; }
  .hc__glow { top: 26%; right: -10%; width: 90vw; height: 90vw; }
  .hero-carousel { min-height: 100vh; }
  .nav__logo-img--ammy { height: 62px; }
  .nav__logo-text-ammy { margin-left: 10px; }
  .nav__logo-text-ammy__line1, .nav__logo-text-ammy__line2 { font-size: 0.75rem; }
}

@media (prefers-reduced-motion: reduce) {
  .hc__product img { opacity: 1; transform: none; animation: none; }
}

/* ── V2.6 — Giá, gallery, nút liên hệ nổi, footer contact ── */
.product-detail__price {
  font-size: 1.05rem;
  color: var(--ivory-dim);
  margin: 4px 0 12px;
}
.product-detail__price strong { color: var(--gold); font-size: 1.2rem; }
.product-detail__warranty {
  display: inline-block;
  margin-left: 10px;
  font-size: 0.75rem;
  font-family: var(--font-head);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--teal-light);
  border: 1px solid var(--teal-light);
  border-radius: 100px;
  padding: 3px 12px;
  vertical-align: middle;
}

.pd-gallery {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.pd-gallery__thumb {
  width: 88px;
  height: 66px;
  object-fit: cover;
  border-radius: 8px;
  border: 2px solid var(--black-4);
  background: var(--black-2);
  cursor: pointer;
  transition: border-color var(--transition), transform var(--transition);
}
.pd-gallery__thumb:hover { transform: translateY(-2px); }
.pd-gallery__thumb:hover, .pd-gallery__thumb.active { border-color: var(--gold); }

/* ── Event photo gallery (folder theo từng sự kiện) ── */
.event-photo-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 24px;
}
.event-photo-gallery__item {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 2px solid var(--black-4);
  background: var(--black-2);
  cursor: zoom-in;
  transition: border-color var(--transition), transform var(--transition);
}
.event-photo-gallery__item:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
}
.event-folder {
  margin-top: 32px;
}
.event-folder__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 4px;
}
.event-folder__title {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--ivory);
  font-size: 1.125rem;
}
.event-folder__count {
  font-size: 0.8125rem;
  color: var(--gray-1);
}

.float-contact {
  position: fixed;
  right: 16px;
  bottom: 20px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
@media (max-width: 480px) {
  .float-contact { right: 12px; bottom: 16px; gap: 10px; }
  .float-contact__btn { width: 46px; height: 46px; }
}
.float-contact__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-decoration: none;
}
.float-contact__btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 18px rgba(0,0,0,0.45);
  transition: transform var(--transition);
}
.float-contact__item:hover .float-contact__btn { transform: scale(1.08); }
.float-contact__btn--zalo { background: #0068FF; }
.float-contact__zalo-text {
  color: #fff;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}
.float-contact__btn--zalo-warranty {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.float-contact__btn--call {
  background: var(--gold);
  color: var(--black);
  animation: callPulse 2.2s ease infinite;
}
@keyframes callPulse {
  0%, 100% { box-shadow: 0 6px 18px rgba(0,0,0,0.45), 0 0 0 0 rgba(200,169,110,0.5); }
  50% { box-shadow: 0 6px 18px rgba(0,0,0,0.45), 0 0 0 12px rgba(200,169,110,0); }
}
.float-contact__label {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(15,15,15,0.85);
  box-shadow: 0 2px 8px rgba(0,0,0,0.35);
}
.float-contact__label--warranty { color: var(--gold); border: 1px solid rgba(200,169,110,0.5); }
.float-contact__label--sales { color: var(--ivory); border: 1px solid var(--black-4); }
@media (max-width: 480px) {
  .float-contact__label { font-size: 0.625rem; padding: 2px 6px; }
}

.footer-contact-line {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--black-4);
  color: var(--gray-1);
  font-size: 0.8125rem;
  line-height: 1.9;
}
.footer-contact-line a { color: var(--gold); }

@media (prefers-reduced-motion: reduce) {
  .float-contact__btn--call { animation: none; }
}

/* ── Site Chat (icon nổi + panel — toàn site) ── */
.site-chat__toggle {
  background: var(--teal);
  color: var(--white);
  border: none;
  cursor: pointer;
}
.site-chat__toggle:hover { background: var(--teal-light); }
.site-chat__toggle.active { background: var(--gold); color: var(--black); }

.site-chat__panel {
  position: fixed;
  right: 16px;
  bottom: 90px;
  width: 360px;
  max-width: calc(100vw - 24px);
  max-height: min(560px, 72vh);
  background: var(--black-2);
  border: 1px solid var(--black-4);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 40px rgba(0,0,0,0.5);
  z-index: 950;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(16px) scale(0.98);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.site-chat__panel.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
@media (max-width: 480px) {
  .site-chat__panel {
    right: 12px;
    left: 12px;
    width: auto;
    bottom: 78px;
    max-height: 70vh;
  }
}

.site-chat__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 16px 12px;
  border-bottom: 1px solid var(--black-4);
}
.site-chat__title {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--gold);
  font-size: 0.9375rem;
}
.site-chat__subtitle {
  color: var(--gray-1);
  font-size: 0.75rem;
  margin-top: 4px;
  max-width: 280px;
}
.site-chat__close {
  background: none;
  border: none;
  color: var(--gray-1);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 2px;
  flex-shrink: 0;
}
.site-chat__close:hover { color: var(--gold); }

.site-chat__log {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 16px;
}
.site-chat__msg { display: flex; }
.site-chat__msg--user { justify-content: flex-end; }
.site-chat__msg--bot { justify-content: flex-start; }
.site-chat__bubble {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.875rem;
  line-height: 1.55;
}
.site-chat__msg--bot .site-chat__bubble {
  background: var(--black-3);
  border: 1px solid var(--black-4);
  color: var(--ivory-dim);
  border-bottom-left-radius: 2px;
}
.site-chat__msg--user .site-chat__bubble {
  background: rgba(200,169,110,0.14);
  border: 1px solid rgba(200,169,110,0.35);
  color: var(--ivory);
  border-bottom-right-radius: 2px;
}
.site-chat__bubble a { color: var(--gold); }
.site-chat__bubble img {
  display: block;
  max-width: 100%;
  height: auto;
  margin-top: 8px;
  border-radius: 8px;
  border: 1px solid var(--black-4);
}
.site-chat__link {
  display: inline-block;
  margin-top: 6px;
  color: var(--gold);
  font-size: 0.8125rem;
  font-weight: 600;
}

.site-chat__suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 16px 12px;
}
.site-chat__suggestion {
  background: var(--black-3);
  border: 1px solid var(--black-4);
  color: var(--ivory-dim);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 0.7rem;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.site-chat__suggestion:hover { border-color: var(--gold); color: var(--gold); }

.site-chat__form {
  display: flex;
  gap: 10px;
  padding: 12px 16px 16px;
  border-top: 1px solid var(--black-4);
}
.site-chat__form .form-control { flex: 1; }

/* ── V2.7 — OEM strip ── */
.oem-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: var(--black-2);
  border: 1px dashed var(--gold);
  border-radius: var(--radius-lg);
  padding: 22px 28px;
  transition: background var(--transition);
}
.oem-strip:hover { background: var(--black-3); }
.oem-strip__title {
  font-family: var(--font-head);
  font-weight: 800;
  color: var(--gold);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.oem-strip__desc { color: var(--ivory-dim); font-size: 0.9rem; line-height: 1.6; }
@media (max-width: 640px) { .oem-strip { flex-direction: column; align-items: flex-start; } }


/* ── V2.8 — Chống lỗi nền sáng & thống nhất hiển thị ── */
html { background: #0D0D0D; }
body { background: #0D0D0D !important; }
.section { background-color: var(--black); }
.page-hero { background-color: var(--black); }
.site-footer { background-color: var(--black-2); }
main, .pv-page { background-color: var(--black); }

/* Tăng độ tương phản nội dung */
.section-intro, .tech-card__desc { color: #CFC8BC; }
p { line-height: 1.85; }

/* ── V2.9 — Lưới sản phẩm 2 cột mobile + ảnh tách nền ── */
/* Ảnh sản phẩm PNG trong suốt: nền gradient nhẹ + đệm */
.card__image {
  background: radial-gradient(circle at 50% 40%, #1E1C19 0%, var(--black-3) 75%);
  padding: 14px;
}
.card__image img { object-fit: contain; width: 100%; height: 100%; filter: drop-shadow(0 10px 18px rgba(0,0,0,0.38)); }

.product-detail__image-wrap {
  background: radial-gradient(circle at 50% 40%, #1E1C19 0%, var(--black-2) 80%);
}

/* Mobile: 2 cột — nhiều sản phẩm hơn trên 1 màn hình */
@media (max-width: 768px) {
  #product-grid.grid--auto,
  #product-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 12px;
  }
  #product-grid .card__body { padding: 12px 12px 14px; }
  #product-grid .product-card__name,
  #product-grid .card__title { font-size: 0.9rem; }
  #product-grid .product-card__tagline {
    font-size: 0.72rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  #product-grid .tech-chip { font-size: 0.58rem; padding: 3px 8px; }
  #product-grid .card__image { aspect-ratio: 4/3; padding: 10px; }
  #product-grid .product-card__badges .badge { font-size: 0.58rem; padding: 3px 8px; }
  #product-grid .card__footer, #product-grid .product-card__link { font-size: 0.72rem; padding: 10px 12px; }
}

/* ── V3.3 — Thẻ thương hiệu AMMY (trang Giới thiệu) ── */
.brand-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 4px;
  padding: 8px;
}
.brand-card__logo-full {
  background: #ffffff;
  border-radius: 16px;
  padding: 28px 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.45);
  margin-bottom: 22px;
}
.brand-card__logo-full img {
  width: 200px;
  max-width: 100%;
  height: auto;
}
.brand-card__name {
  font-family: 'Times New Roman', Times, serif;
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--gold);
  line-height: 1;
}
.brand-card__tag {
  font-size: 0.8125rem;
  color: var(--gray-1);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-top: 6px;
}
.brand-card__iso { margin-top: 20px; }

@media (max-width: 768px) {
  .brand-card__logo { width: 140px; height: 140px; }
  .brand-card__name { font-size: 2.1rem; }
}

/* ── V3.4 — Event cards ── */
.event-card {
  background: var(--black-2);
  border: 1px solid var(--black-4);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}
.event-card:hover { border-color: var(--gold); transform: translateY(-3px); }
.event-card__media {
  aspect-ratio: 16/10;
  background: radial-gradient(circle at 50% 40%, #1E1C19 0%, var(--black-3) 80%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-1);
  font-size: 0.85rem;
  border-bottom: 1px solid var(--black-4);
}
.event-card__body { padding: 24px; }
.event-card__date {
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
}
.event-card__title {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--white);
  font-size: 1.1rem;
  margin-bottom: 8px;
}
.event-card__desc { color: var(--ivory-dim); font-size: 0.9rem; line-height: 1.65; }

/* ── V3.5 — Trang Download: doc cards ── */
.doc-list { display: flex; flex-direction: column; gap: 14px; max-width: 860px; }
.doc-card {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--black-2);
  border: 1px solid var(--black-4);
  border-radius: var(--radius);
  padding: 18px 22px;
  transition: border-color var(--transition);
}
.doc-card:hover { border-color: var(--gold); }
.doc-card__icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  color: var(--gold);
  display: flex; align-items: center; justify-content: center;
}
.doc-card__icon svg { width: 28px; height: 28px; }
.doc-card__body { flex: 1; min-width: 0; }
.doc-card__title {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 3px;
}
.doc-card__desc { color: var(--ivory-dim); font-size: 0.85rem; line-height: 1.5; }
.doc-card__action { flex-shrink: 0; }
.doc-card__soon {
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray-1);
  border: 1px solid var(--black-4);
  border-radius: 100px;
  padding: 6px 14px;
}
@media (max-width: 600px) {
  .doc-card { flex-wrap: wrap; gap: 12px; }
  .doc-card__icon { width: 36px; height: 36px; }
  .doc-card__action { width: 100%; }
  .doc-card__action .btn { width: 100%; text-align: center; }
}

/* ── V3.6 — Tech card link (bấm được) ── */
a.tech-card { display: flex; flex-direction: column; cursor: pointer; }
.tech-card__link {
  margin-top: 14px;
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--gold);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--transition), transform var(--transition);
}
a.tech-card:hover .tech-card__link { opacity: 1; transform: translateX(0); }
a.tech-card:hover .tech-card__icon { color: var(--gold); }
@media (max-width: 768px) {
  .tech-card__link { opacity: 1; transform: none; }
}

/* ── V3.9 — Lightbox phóng to ảnh ── */
.pd-zoomable { cursor: zoom-in; }
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(8,8,8,0.94);
  display: none;
  flex-direction: column;
  backdrop-filter: blur(4px);
}
.lightbox.open { display: flex; }
.lightbox__stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  touch-action: none;
}
.lightbox__img {
  max-width: 92vw;
  max-height: 82vh;
  cursor: grab;
  transition: transform 0.08s ease-out;
  user-select: none;
  -webkit-user-drag: none;
}
.lightbox__close {
  position: absolute;
  top: 18px; right: 22px;
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--black-4);
  background: rgba(20,20,20,0.8);
  color: var(--ivory);
  font-size: 1.8rem;
  line-height: 1;
  cursor: pointer;
  z-index: 5;
  transition: all var(--transition);
}
.lightbox__close:hover { border-color: var(--gold); color: var(--gold); }
.lightbox__hint {
  position: absolute;
  top: 22px; left: 50%;
  transform: translateX(-50%);
  font-size: 0.78rem;
  color: var(--gray-1);
  letter-spacing: 0.03em;
  text-align: center;
  max-width: 80vw;
}
.lightbox__controls {
  display: flex;
  gap: 12px;
  justify-content: center;
  padding: 20px;
}
.lightbox__controls button {
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid var(--black-4);
  background: rgba(20,20,20,0.85);
  color: var(--ivory);
  font-size: 1.3rem;
  cursor: pointer;
  transition: all var(--transition);
}
.lightbox__controls button:hover { border-color: var(--gold); color: var(--gold); }
@media (max-width: 768px) {
  .lightbox__hint { font-size: 0.68rem; top: 70px; }
  .lightbox__img { max-width: 96vw; max-height: 72vh; }
}

/* ── Accessibility: focus-visible đồng bộ màu thương hiệu ── */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  border-radius: 2px;
}