/* ============================================================
   ĐÔNG Á CẦN THƠ — Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --primary:        #1E40AF;
  --primary-dark:   #1D3A9E;
  --primary-light:  #3B82F6;
  --primary-bg:     #EFF6FF;
  --accent:         #F97316;
  --accent-dark:    #EA6B0F;
  --green:          #10B981;
  --dark:           #0F172A;
  --dark-2:         #1E293B;
  --gray:           #64748B;
  --gray-light:     #94A3B8;
  --border:         #E2E8F0;
  --bg:             #F8FAFC;
  --white:          #FFFFFF;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow:     0 4px 12px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.04);
  --shadow-md:  0 8px 24px rgba(0,0,0,.10), 0 4px 12px rgba(0,0,0,.05);
  --shadow-lg:  0 20px 48px rgba(0,0,0,.12);

  --radius-sm: 6px;
  --radius:    12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a  { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font); }
input, textarea, select { font-family: var(--font); }

/* ── Typography ─────────────────────────────────────────────── */
h1 { font-size: clamp(2rem, 4vw, 3rem);   font-weight: 800; line-height: 1.15; }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); font-weight: 700; line-height: 1.2;  }
h3 { font-size: 1.25rem; font-weight: 600; line-height: 1.3; }
h4 { font-size: 1rem;    font-weight: 600; }
p  { color: var(--gray); line-height: 1.75; }

/* ── Utility ─────────────────────────────────────────────────── */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section    { padding: 80px 0; }
.section-sm { padding: 56px 0; }
.text-center { text-align: center; }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--primary-bg); color: var(--primary);
  font-size: .75rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  padding: 5px 14px; border-radius: 100px;
}
.section-header { margin-bottom: 48px; }
.section-header h2 { color: var(--dark); margin: 12px 0 16px; }
.section-header p  { max-width: 560px; }
.section-header.text-center p { margin: 0 auto; }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: var(--radius);
  font-size: .95rem; font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary); color: var(--white);
  box-shadow: 0 4px 16px rgba(30,64,175,.35);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(30,64,175,.40);
}
.btn-accent {
  background: var(--accent); color: var(--white);
  box-shadow: 0 4px 16px rgba(249,115,22,.35);
}
.btn-accent:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(249,115,22,.40);
}
.btn-outline {
  background: transparent; color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: var(--white); }
.btn-ghost {
  background: rgba(255,255,255,.12); color: var(--white);
  border: 1.5px solid rgba(255,255,255,.3);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255,255,255,.22); }
.btn-sm { padding: 8px 18px; font-size: .875rem; }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; }

/* ── Card ────────────────────────────────────────────────────── */
.card {
  background: var(--white); border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  overflow: hidden;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }

/* ══════════════════════════════════════════════════════════════
   HEADER / NAVIGATION
══════════════════════════════════════════════════════════════ */
.topbar {
  background: var(--primary-dark); color: var(--white);
  padding: 8px 0;
  font-size: .82rem;
}
.topbar .container {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.topbar-left { display: flex; align-items: center; gap: 0; opacity: .9; flex-wrap: nowrap; }
.topbar-left span {
  display: flex; align-items: center; gap: 6px;
  white-space: nowrap; padding: 0 16px;
  border-right: 1px solid rgba(255,255,255,.2);
  font-size: .8rem;
}
.topbar-left span:first-child { padding-left: 0; }
.topbar-left span:last-child  { border-right: none; }
.topbar-left span svg { width: 13px; height: 13px; fill: rgba(255,255,255,.85); flex-shrink: 0; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.topbar-right a {
  display: flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 50%;
  background: rgba(255,255,255,.1);
  transition: var(--transition);
}
.topbar-right a:hover { background: var(--primary-light); }
.topbar-right a svg { width: 14px; height: 14px; fill: white; }

.header {
  position: sticky; top: 0; z-index: 1000;
  background: var(--white); border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 24px;
}
.logo {
  display: flex; align-items: center; gap: 12px;
  flex-shrink: 0;
}
.logo-icon {
  width: 44px; height: 44px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.logo-icon svg { width: 24px; height: 24px; fill: white; }
.logo-text { line-height: 1.2; }
.logo-text strong { display: block; font-size: 1.1rem; font-weight: 800; color: var(--dark); }
.logo-text span    { font-size: .72rem; color: var(--gray); font-weight: 500; letter-spacing: .02em; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 8px 14px; border-radius: var(--radius-sm);
  font-size: .9rem; font-weight: 500; color: var(--gray);
  transition: var(--transition);
  position: relative;
}
.nav a:hover, .nav a.active { color: var(--primary); background: var(--primary-bg); }

.header-cta { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.hotline-badge {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-radius: var(--radius);
  background: var(--primary-bg); color: var(--primary);
  font-weight: 700; font-size: .9rem;
}
.hotline-badge svg { width: 16px; height: 16px; fill: var(--primary); animation: ring 2s ease-in-out infinite; }
@keyframes ring {
  0%,100% { transform: rotate(0); }
  10%,30%  { transform: rotate(-12deg); }
  20%,40%  { transform: rotate(12deg); }
  50%      { transform: rotate(0); }
}

.hamburger {
  display: none; flex-direction: column; gap: 5px;
  width: 36px; height: 36px; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--dark); border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
.mobile-nav {
  display: none; position: fixed; inset: 0; z-index: 999;
  background: var(--white); flex-direction: column;
  padding: 80px 24px 32px;
  transform: translateX(100%); transition: transform .3s ease;
}
.mobile-nav.open { transform: translateX(0); }
.mobile-nav a {
  display: block; padding: 14px 0;
  font-size: 1.1rem; font-weight: 600; color: var(--dark);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.mobile-nav a:hover { color: var(--primary); padding-left: 8px; }

/* ══════════════════════════════════════════════════════════════
   HERO
══════════════════════════════════════════════════════════════ */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
  padding: 100px 0 80px;
  min-height: 560px; display: flex; align-items: center;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-blob {
  position: absolute; border-radius: 50%;
  background: rgba(255,255,255,.06); pointer-events: none;
}
.hero-blob-1 { width: 500px; height: 500px; top: -150px; right: -100px; }
.hero-blob-2 { width: 300px; height: 300px; bottom: -100px; left: 10%; }

.hero-inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
  position: relative; z-index: 1;
}
.hero-content { color: var(--white); }
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,.15); color: var(--white);
  font-size: .78rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  padding: 6px 16px; border-radius: 100px; margin-bottom: 20px;
  border: 1px solid rgba(255,255,255,.2);
  backdrop-filter: blur(8px);
}
.hero-content h1 { color: var(--white); margin-bottom: 16px; }
.hero-content h1 span { color: #FCD34D; }
.hero-content p { color: rgba(255,255,255,.8); font-size: 1.05rem; margin-bottom: 32px; max-width: 480px; }
.hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }

.hero-stats {
  display: flex; gap: 24px; margin-top: 48px; padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,.15);
}
.hero-stat-item { color: white; }
.hero-stat-item strong { display: block; font-size: 1.8rem; font-weight: 800; }
.hero-stat-item span  { font-size: .8rem; opacity: .75; }

.hero-visual {
  display: flex; flex-direction: column; gap: 16px; align-items: flex-end;
}
.hero-card {
  background: rgba(255,255,255,.12); border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,.2); backdrop-filter: blur(12px);
  padding: 24px; color: white; width: 100%; max-width: 380px;
}
.hero-card-icon {
  width: 48px; height: 48px; border-radius: var(--radius);
  background: rgba(255,255,255,.15); display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.hero-card-icon svg { width: 24px; height: 24px; fill: white; }
.hero-card h4 { font-size: 1rem; margin-bottom: 6px; }
.hero-card p  { font-size: .85rem; opacity: .75; color: rgba(255,255,255,.75); }
.hero-card-sm {
  background: rgba(255,255,255,.08); border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.15);
  padding: 16px 20px; color: white;
  display: flex; align-items: center; gap: 14px;
  width: 100%; max-width: 380px;
}
.hero-card-sm svg { width: 20px; height: 20px; fill: #FCD34D; flex-shrink: 0; }
.hero-card-sm span { font-size: .88rem; opacity: .9; }

/* ══════════════════════════════════════════════════════════════
   TRUST BAR
══════════════════════════════════════════════════════════════ */
.trust-bar { background: var(--primary); padding: 20px 0; }
.trust-bar-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  flex-wrap: wrap;
}
.trust-item {
  display: flex; align-items: center; gap: 10px;
  color: rgba(255,255,255,.85); font-size: .88rem; font-weight: 500;
}
.trust-item svg { width: 20px; height: 20px; fill: var(--accent); flex-shrink: 0; }
.trust-divider { width: 1px; height: 24px; background: rgba(255,255,255,.15); }

/* ══════════════════════════════════════════════════════════════
   CATEGORIES
══════════════════════════════════════════════════════════════ */
.categories-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 20px;
}
.category-card {
  background: var(--white); border-radius: var(--radius-lg);
  border: 1.5px solid var(--border);
  padding: 28px 20px; text-align: center;
  cursor: pointer; transition: var(--transition);
  text-decoration: none; color: var(--dark);
}
.category-card:hover { border-color: var(--primary); transform: translateY(-6px); box-shadow: var(--shadow-md); }
.category-card:hover .cat-icon { background: var(--primary); }
.category-card:hover .cat-icon svg { fill: white; }
.cat-icon {
  width: 64px; height: 64px; border-radius: var(--radius);
  background: var(--primary-bg); margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.cat-icon svg { width: 30px; height: 30px; fill: var(--primary); transition: var(--transition); }
.category-card h3 { font-size: .95rem; color: var(--dark); margin-bottom: 6px; }
.category-card p  { font-size: .8rem; color: var(--gray-light); }
.category-card .cat-count {
  display: inline-block; margin-top: 12px; padding: 3px 12px;
  background: var(--primary-bg); color: var(--primary);
  border-radius: 100px; font-size: .75rem; font-weight: 600;
}

/* ══════════════════════════════════════════════════════════════
   PRODUCT CARDS
══════════════════════════════════════════════════════════════ */
.products-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px;
}
.product-card {
  background: var(--white); border-radius: var(--radius-lg);
  border: 1px solid var(--border); overflow: hidden;
  transition: var(--transition);
}
.product-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); border-color: var(--primary-light); }
.product-img {
  position: relative; overflow: hidden;
  aspect-ratio: 4/3; background: var(--bg);
  display: flex; align-items: center; justify-content: center;
}
.product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.product-card:hover .product-img img { transform: scale(1.06); }
.product-img .no-img {
  width: 80px; height: 80px; fill: var(--border);
}
.product-tag {
  position: absolute; top: 12px; left: 12px;
  background: var(--accent); color: white;
  font-size: .7rem; font-weight: 700; padding: 4px 10px;
  border-radius: 100px; text-transform: uppercase; letter-spacing: .04em;
}
.product-tag.new { background: var(--green); }
.product-tag.sale { background: var(--accent); }
.product-tag.hot { background: #EF4444; }
.product-body { padding: 20px; }
.product-brand {
  font-size: .75rem; font-weight: 600; color: var(--primary);
  text-transform: uppercase; letter-spacing: .06em; margin-bottom: 6px;
}
.product-body h3 {
  font-size: .95rem; color: var(--dark); margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.product-body p {
  font-size: .82rem; color: var(--gray-light); margin-bottom: 10px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.product-price { display: flex; align-items: baseline; gap: 6px; margin-top: 4px; }
.price-value {
  font-size: 1rem; font-weight: 700; color: var(--primary);
  font-variant-numeric: tabular-nums;
}
.price-note { font-size: .7rem; color: var(--gray-light); }
.price-contact { font-size: .82rem; color: var(--gray-light); font-style: italic; }
.modal-price {
  margin-bottom: 16px; padding: 10px 14px;
  background: var(--bg); border-radius: 8px;
  border-left: 3px solid var(--primary);
}
.modal-price-value { font-size: 1.25rem; font-weight: 700; color: var(--primary); font-variant-numeric: tabular-nums; }
.modal-price-note { font-size: .78rem; color: var(--gray-light); margin-left: 6px; }
.modal-price--contact { font-size: .88rem; color: var(--gray); }
.modal-price--contact a { color: var(--primary); font-weight: 600; }
.product-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; background: var(--bg);
  border-top: 1px solid var(--border);
  gap: 10px;
}
.product-contact {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: var(--radius-sm);
  background: var(--primary-bg); color: var(--primary);
  font-size: .82rem; font-weight: 600; transition: var(--transition);
}
.product-contact:hover { background: var(--primary); color: white; }
.product-contact svg { width: 14px; height: 14px; fill: currentColor; }
.product-detail {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  border: 1.5px solid var(--border); color: var(--gray);
  transition: var(--transition);
}
.product-detail:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-bg); }
.product-detail svg { width: 16px; height: 16px; fill: currentColor; }

/* Product modal */
.modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(15,23,42,.7); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center; padding: 20px;
  opacity: 0; pointer-events: none; transition: opacity .25s ease;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: white; border-radius: var(--radius-xl); max-width: 860px; width: 100%;
  max-height: 90vh; overflow-y: auto;
  transform: translateY(20px) scale(.97); transition: transform .25s ease;
}
.modal-overlay.open .modal { transform: none; }
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 24px 28px; border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 1.15rem; }
.modal-close {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--bg); display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.modal-close:hover { background: var(--border); }
.modal-close svg { width: 16px; height: 16px; fill: var(--gray); }
.modal-body { padding: 28px; }
.modal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.modal-img {
  aspect-ratio: 4/3; background: var(--bg); border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.modal-img img { width: 100%; height: 100%; object-fit: cover; }
.modal-info {}
.modal-info .product-brand { font-size: .8rem; margin-bottom: 8px; }
.modal-info h2 { font-size: 1.3rem; margin-bottom: 12px; }
.modal-info .desc { font-size: .9rem; color: var(--gray); margin-bottom: 20px; }
.specs-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; }
.specs-table td {
  padding: 8px 12px; border-bottom: 1px solid var(--border); font-size: .85rem;
}
.specs-table td:first-child { color: var(--gray); font-weight: 500; width: 45%; }
.specs-table td:last-child { font-weight: 600; color: var(--dark); }
.modal-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ══════════════════════════════════════════════════════════════
   SERVICES
══════════════════════════════════════════════════════════════ */
.services-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px;
}
.service-card {
  background: var(--white); border-radius: var(--radius-lg);
  border: 1px solid var(--border); padding: 32px 28px;
  transition: var(--transition); position: relative; overflow: hidden;
}
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transform: scaleX(0); transition: transform .3s ease; transform-origin: left;
}
.service-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 56px; height: 56px; border-radius: var(--radius);
  background: var(--primary-bg); display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; transition: var(--transition);
}
.service-icon svg { width: 26px; height: 26px; fill: var(--primary); }
.service-card:hover .service-icon { background: var(--primary); }
.service-card:hover .service-icon svg { fill: white; }
.service-card h3 { margin-bottom: 10px; font-size: 1.05rem; }
.service-card p  { font-size: .88rem; line-height: 1.7; }
.service-card .learn-more {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 20px; color: var(--primary); font-size: .875rem; font-weight: 600;
  transition: var(--transition);
}
.service-card .learn-more svg { width: 14px; height: 14px; fill: var(--primary); transition: transform .2s; }
.service-card .learn-more:hover { color: var(--primary-dark); }
.service-card .learn-more:hover svg { transform: translateX(4px); }

/* ══════════════════════════════════════════════════════════════
   WHY CHOOSE US
══════════════════════════════════════════════════════════════ */
.why-section { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); }
.why-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 28px;
}
.why-item { text-align: center; padding: 20px; }
.why-icon {
  width: 72px; height: 72px; border-radius: 50%;
  background: rgba(255,255,255,.08); border: 2px solid rgba(255,255,255,.12);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px; transition: var(--transition);
}
.why-icon svg { width: 32px; height: 32px; fill: var(--accent); }
.why-item:hover .why-icon { background: var(--accent); border-color: var(--accent); }
.why-item:hover .why-icon svg { fill: white; }
.why-item h3 { color: white; margin-bottom: 10px; font-size: 1rem; }
.why-item p  { color: rgba(255,255,255,.55); font-size: .85rem; }

/* ══════════════════════════════════════════════════════════════
   BRANDS
══════════════════════════════════════════════════════════════ */
.brands-track { overflow: hidden; padding: 20px 0; }
.brands-inner {
  display: flex; gap: 48px; align-items: center;
  animation: marquee 20s linear infinite;
  width: max-content;
}
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.brand-item {
  display: flex; align-items: center; justify-content: center;
  height: 52px; padding: 0 20px;
  filter: grayscale(1) opacity(.5); transition: filter .3s ease; flex-shrink: 0;
}
.brand-item:hover { filter: none; }
.brand-item span {
  font-size: 1.3rem; font-weight: 800; color: var(--gray);
  letter-spacing: -.02em; white-space: nowrap;
}

/* ══════════════════════════════════════════════════════════════
   STATS
══════════════════════════════════════════════════════════════ */
.stats-section { background: linear-gradient(135deg, var(--primary), var(--primary-light)); }
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.stat-item { text-align: center; padding: 24px 16px; }
.stat-number {
  font-size: 2.8rem; font-weight: 800; color: white; line-height: 1;
  margin-bottom: 8px;
}
.stat-number span { font-size: 1.8rem; }
.stat-label { color: rgba(255,255,255,.75); font-size: .85rem; }

/* ══════════════════════════════════════════════════════════════
   CONTACT SECTION
══════════════════════════════════════════════════════════════ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
.contact-info {}
.contact-card-item {
  display: flex; gap: 16px; padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.contact-card-item:first-child { padding-top: 0; }
.contact-card-item:last-child  { border: none; }
.contact-icon {
  width: 48px; height: 48px; border-radius: var(--radius);
  background: var(--primary-bg); display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.contact-icon svg { width: 22px; height: 22px; fill: var(--primary); }
.contact-card-item h4 { margin-bottom: 4px; font-size: .9rem; }
.contact-card-item p, .contact-card-item a {
  font-size: .88rem; color: var(--gray);
}
.contact-card-item a:hover { color: var(--primary); }

.contact-form {
  background: var(--white); border-radius: var(--radius-xl);
  border: 1px solid var(--border); box-shadow: var(--shadow);
  padding: 36px;
}
.contact-form h3 { margin-bottom: 6px; }
.contact-form > p { font-size: .875rem; margin-bottom: 24px; }
.form-group { margin-bottom: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group label {
  display: block; font-size: .825rem; font-weight: 600; color: var(--dark);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 11px 14px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-size: .9rem; color: var(--dark); background: var(--bg);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary); background: white;
  box-shadow: 0 0 0 3px rgba(30,64,175,.1);
}
.form-group textarea { resize: vertical; min-height: 110px; }

/* ══════════════════════════════════════════════════════════════
   PAGE HERO (inner pages)
══════════════════════════════════════════════════════════════ */
.page-hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
  padding: 60px 0;
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.page-hero-content { position: relative; z-index: 1; }
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 16px; font-size: .82rem;
}
.breadcrumb a  { color: rgba(255,255,255,.65); }
.breadcrumb a:hover { color: white; }
.breadcrumb span { color: rgba(255,255,255,.4); }
.breadcrumb strong { color: rgba(255,255,255,.9); }
.page-hero h1 { color: white; margin-bottom: 12px; }
.page-hero p  { color: rgba(255,255,255,.75); max-width: 520px; }

/* ══════════════════════════════════════════════════════════════
   FILTER BAR (products page)
══════════════════════════════════════════════════════════════ */
.filter-bar {
  background: var(--white); padding: 20px 0;
  border-bottom: 1px solid var(--border); position: sticky; top: 72px; z-index: 100;
}
.filter-inner { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.filter-btn {
  padding: 8px 18px; border-radius: 100px;
  border: 1.5px solid var(--border); font-size: .85rem; font-weight: 500;
  color: var(--gray); background: var(--white); cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover   { border-color: var(--primary); color: var(--primary); }
.filter-btn.active  { background: var(--primary); border-color: var(--primary); color: white; }
.filter-search {
  margin-left: auto; position: relative;
}
.filter-search input {
  padding: 8px 14px 8px 38px; border-radius: 100px;
  border: 1.5px solid var(--border); font-size: .85rem;
  outline: none; width: 220px; transition: var(--transition);
}
.filter-search input:focus { border-color: var(--primary); width: 260px; }
.filter-search svg {
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  width: 15px; height: 15px; fill: var(--gray-light); pointer-events: none;
}

/* ══════════════════════════════════════════════════════════════
   ABOUT PAGE
══════════════════════════════════════════════════════════════ */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-img-wrap {
  position: relative; border-radius: var(--radius-xl); overflow: hidden;
  aspect-ratio: 5/4;
}
.about-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.about-badge-float {
  position: absolute; bottom: 24px; left: 24px;
  background: white; border-radius: var(--radius); padding: 14px 20px;
  box-shadow: var(--shadow-md);
}
.about-badge-float strong { display: block; font-size: 1.6rem; font-weight: 800; color: var(--primary); }
.about-badge-float span   { font-size: .78rem; color: var(--gray); }
.about-content .badge { margin-bottom: 14px; }
.about-content h2 { margin-bottom: 16px; }
.about-content p  { margin-bottom: 16px; font-size: .92rem; }
.about-list { margin: 20px 0; }
.about-list li {
  display: flex; gap: 12px; padding: 10px 0;
  border-bottom: 1px solid var(--border); font-size: .9rem;
}
.about-list li:last-child { border: none; }
.about-list li svg { width: 18px; height: 18px; fill: var(--green); flex-shrink: 0; margin-top: 2px; }

.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.value-card {
  background: var(--white); border-radius: var(--radius-lg);
  border: 1px solid var(--border); padding: 28px 24px; text-align: center;
  transition: var(--transition);
}
.value-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.value-num {
  font-size: 2.5rem; font-weight: 900; color: var(--primary-bg);
  -webkit-text-stroke: 2px var(--primary-light); margin-bottom: 12px; line-height: 1;
}
.value-card h3 { font-size: .95rem; margin-bottom: 8px; }
.value-card p  { font-size: .82rem; }

/* ══════════════════════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════════════════════ */
.footer { background: var(--dark); color: rgba(255,255,255,.7); }
.footer-main { padding: 64px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; }
.footer-brand {}
.footer-logo {
  display: flex; align-items: center; gap: 12px; margin-bottom: 16px;
}
.footer-logo strong { color: white; font-size: 1.1rem; font-weight: 800; }
.footer-logo span   { font-size: .7rem; color: rgba(255,255,255,.5); display: block; }
.footer-brand p { font-size: .875rem; line-height: 1.75; margin-bottom: 20px; }
.social-links { display: flex; gap: 10px; }
.social-link {
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,.08); display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.social-link:hover { background: var(--primary); }
.social-link svg { width: 16px; height: 16px; fill: rgba(255,255,255,.7); }

.footer-col h4 { color: white; font-size: .9rem; margin-bottom: 20px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  font-size: .85rem; color: rgba(255,255,255,.55); transition: var(--transition);
  display: flex; align-items: center; gap: 6px;
}
.footer-col ul li a:hover { color: white; padding-left: 4px; }

.footer-contact-item {
  display: flex; gap: 10px; margin-bottom: 14px; font-size: .85rem;
}
.footer-contact-item svg { width: 16px; height: 16px; fill: var(--accent); flex-shrink: 0; margin-top: 2px; }
.footer-contact-item a { color: rgba(255,255,255,.7); }
.footer-contact-item a:hover { color: white; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
}
.footer-bottom-inner {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p { font-size: .8rem; color: rgba(255,255,255,.4); }
.footer-bottom a { color: rgba(255,255,255,.5); font-size: .8rem; }
.footer-bottom a:hover { color: white; }

/* ══════════════════════════════════════════════════════════════
   FLOATING BUTTONS
══════════════════════════════════════════════════════════════ */
.float-btns {
  position: fixed; bottom: 28px; right: 24px; z-index: 500;
  display: flex; flex-direction: column; gap: 12px; align-items: flex-end;
}
.float-btn {
  display: flex; align-items: center; gap: 10px;
  border-radius: 100px; padding: 12px 18px 12px 14px;
  font-weight: 600; font-size: .875rem; color: white;
  box-shadow: var(--shadow-md); cursor: pointer; transition: var(--transition);
  text-decoration: none;
}
.float-btn svg { width: 20px; height: 20px; fill: white; flex-shrink: 0; }
.float-btn:hover { transform: translateX(-4px) scale(1.04); }
.float-btn-zalo { background: #0068FF; }
.float-btn-phone { background: var(--green); }
.float-btn-label { white-space: nowrap; }

.back-to-top {
  position: fixed; bottom: 28px; left: 24px; z-index: 500;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); color: white; border: none;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow); cursor: pointer;
  opacity: 0; transform: translateY(16px); pointer-events: none;
  transition: var(--transition);
}
.back-to-top.visible { opacity: 1; transform: none; pointer-events: all; }
.back-to-top:hover   { transform: translateY(-3px); background: var(--primary-dark); }
.back-to-top svg { width: 18px; height: 18px; fill: white; }

/* ══════════════════════════════════════════════════════════════
   ANIMATIONS
══════════════════════════════════════════════════════════════ */
.fade-in {
  opacity: 0; transform: translateY(24px);
  transition: opacity .5s ease, transform .5s ease;
}
.fade-in.visible { opacity: 1; transform: none; }
.fade-in-delay-1 { transition-delay: .1s; }
.fade-in-delay-2 { transition-delay: .2s; }
.fade-in-delay-3 { transition-delay: .3s; }

/* ══════════════════════════════════════════════════════════════
   FAQ ACCORDION
══════════════════════════════════════════════════════════════ */
.faq-list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--card-bg, white); border: 1.5px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.faq-item summary {
  padding: 18px 20px; font-weight: 600; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  list-style: none; color: var(--dark);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-icon { width: 20px; height: 20px; fill: var(--primary); flex-shrink: 0; transition: transform .25s; }
details[open] .faq-icon { transform: rotate(180deg); }
.faq-item p { padding: 0 20px 18px; color: var(--gray); font-size: .9rem; line-height: 1.7; margin: 0; }

/* ══════════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero-inner   { gap: 40px; }
  .footer-grid  { grid-template-columns: 1fr 1fr; gap: 32px; }
  .stats-grid   { grid-template-columns: repeat(2, 1fr); }
  .modal-grid   { grid-template-columns: 1fr; }
  .modal-img    { aspect-ratio: 16/9; }
}
@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .topbar  { display: none; }
  .nav, .header-cta  { display: none; }
  .hamburger { display: flex; }
  .mobile-nav { display: flex; }

  .hero { padding: 60px 0; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .hero-content h1 { font-size: 2rem; }

  .trust-bar-inner { justify-content: center; }
  .trust-divider   { display: none; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid   { grid-template-columns: repeat(2, 1fr); }
  .services-grid   { grid-template-columns: 1fr; }
  .why-grid        { grid-template-columns: repeat(2, 1fr); }

  .contact-grid  { grid-template-columns: 1fr; }
  .about-grid    { grid-template-columns: 1fr; }
  .values-grid   { grid-template-columns: 1fr 1fr; }
  .footer-grid   { grid-template-columns: 1fr; }

  .form-row { grid-template-columns: 1fr; }
  .float-btn-label { display: none; }
  .float-btn { padding: 12px; border-radius: 50%; }

  .filter-search  { margin-left: 0; width: 100%; }
  .filter-search input { width: 100%; }
  .filter-inner   { gap: 8px; }
}
@media (max-width: 480px) {
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid   { grid-template-columns: 1fr; }
  .stats-grid      { grid-template-columns: repeat(2, 1fr); }
  .values-grid     { grid-template-columns: 1fr; }
  h1 { font-size: 1.75rem; }
}

/* ── Misc ─────────────────────────────────────────────────────── */
.highlight { color: var(--primary); }
.text-accent { color: var(--accent); }
.divider { width: 48px; height: 3px; background: var(--primary); border-radius: 2px; margin: 12px 0 20px; }
.divider-center { margin: 12px auto 20px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 4px 12px; border-radius: 100px; font-size: .78rem; font-weight: 500;
  background: var(--bg); color: var(--gray); border: 1px solid var(--border);
}