/* ============================================================
   TUSKO Excavator - Main Stylesheet
   Background: #FFFFFF | Primary: #000000 | Accent: Pantone 137C (#E8930A)
   ============================================================ */

:root {
  --black: #000000;
  --white: #FFFFFF;
  --accent: #E8930A;
  --accent-dark: #C47808;
  --accent-light: #F5A623;
  --accent-bg: rgba(232,147,10,0.08);
  --gray-100: #F8F8F8;
  --gray-200: #EFEFEF;
  --gray-300: #E0E0E0;
  --gray-400: #BDBDBD;
  --gray-500: #9E9E9E;
  --gray-600: #757575;
  --gray-700: #424242;
  --gray-800: #212121;
  --text-main: #111111;
  --text-sub: #555555;
  --text-muted: #888888;
  --border: #E0E0E0;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.07);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.13);
  --radius: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-heading: 'Barlow Condensed', 'Arial Narrow', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
}

/* ===== RESET ===== */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; font-size:16px; }
body {
  background: var(--white);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.65;
  overflow-x: hidden;
}
img { max-width:100%; display:block; }
a { text-decoration:none; color:inherit; }
ul { list-style:none; }
button { font-family:inherit; cursor:pointer; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width:5px; }
::-webkit-scrollbar-track { background:#f1f1f1; }
::-webkit-scrollbar-thumb { background:var(--accent); border-radius:3px; }

/* ===== TYPOGRAPHY ===== */
h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  color: var(--black);
  letter-spacing: 0.02em;
}
h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: 1.2rem; }
p { color: var(--text-sub); line-height: 1.75; }

/* ===== LAYOUT ===== */
.container { max-width:1240px; margin:0 auto; padding:0 24px; }
.container-wide { max-width:1440px; margin:0 auto; padding:0 40px; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border: none;
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(232,147,10,0.35); }
.btn-dark {
  background: var(--black);
  color: var(--white);
}
.btn-dark:hover { background: var(--gray-800); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: var(--black);
  border: 2px solid var(--black);
}
.btn-outline:hover { background: var(--black); color: var(--white); }
.btn-outline-accent {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}
.btn-outline-accent:hover { background: var(--accent); color: var(--white); }
.btn-lg { padding: 16px 44px; font-size: 14px; }
.btn-sm { padding: 9px 22px; font-size: 12px; }

/* ===== SECTION UTILITIES ===== */
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.section-lg { padding: 128px 0; }
.section-title {
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--black);
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 560px;
  line-height: 1.75;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-label::before {
  content: '';
  display: block;
  width: 28px;
  height: 2px;
  background: var(--accent);
}

/* ===== TOP BAR ===== */
.topbar {
  background: var(--black);
  color: var(--white);
  padding: 8px 0;
  font-size: 12px;
  letter-spacing: 0.5px;
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.topbar-left { display:flex; align-items:center; gap:20px; color:#aaa; }
.topbar-left span { display:flex; align-items:center; gap:6px; }
.topbar-right { display:flex; align-items:center; gap:20px; }
.topbar-right a { color:#aaa; transition:var(--transition); font-size:13px; font-weight:500; }
.topbar-right a:hover { color:var(--accent); }
.topbar-right a.lang-active { color:var(--accent); font-weight:600; border-bottom:2px solid var(--accent); }

/* ===== NAVBAR ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.nav-logo { display:flex; align-items:center; gap:12px; flex-shrink:0; }
.nav-logo-text { font-family:var(--font-heading); font-size:26px; font-weight:900; letter-spacing:3px; text-transform:uppercase; color:var(--black); line-height:1; }
.nav-logo-text span { color:var(--accent); }
.nav-logo-sub { font-size:9px; letter-spacing:3px; text-transform:uppercase; color:var(--text-muted); margin-top:2px; }
.nav-menu { display:flex; align-items:center; gap:4px; }
.nav-menu a {
  display: flex; align-items:center; gap:5px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--text-main);
  border-radius: var(--radius);
  transition: var(--transition);
  text-transform: uppercase;
}
.nav-menu a:hover, .nav-menu a.active { color: var(--accent); }
.nav-menu .dropdown { position:relative; }
.nav-menu .dropdown-content {
  display:none;
  position:absolute;
  top:100%;
  left:0;
  min-width:220px;
  background:var(--white);
  border:1px solid var(--border);
  border-top:3px solid var(--accent);
  box-shadow: var(--shadow-md);
  z-index:1001;
  padding:8px 0;
}
.nav-menu .dropdown:hover .dropdown-content { display:block; }
.nav-menu .dropdown-content a {
  display:block;
  padding:10px 20px;
  font-size:13px;
  font-weight:500;
  letter-spacing:0;
  border-radius:0;
  text-transform:none;
  color:var(--text-main);
}
.nav-menu .dropdown-content a:hover { background:var(--gray-100); color:var(--accent); }
.nav-actions { display:flex; align-items:center; gap:12px; }
.nav-inquiry {
  background: var(--accent);
  color: var(--white);
  padding: 10px 22px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: var(--transition);
}
.nav-inquiry:hover { background:var(--accent-dark); color:var(--white); }
.nav-toggle { display:none; background:none; border:none; cursor:pointer; padding:4px; }
.nav-toggle span { display:block; width:24px; height:2px; background:var(--black); margin:5px 0; transition:var(--transition); }

/* ===== HERO ===== */
.hero {
  position: relative;
  background: var(--black);
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}
.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.6) 55%, rgba(232,147,10,0.12) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 660px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--white);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 0;
  margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  font-family: var(--font-heading);
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--white);
  line-height: 1.05;
  margin-bottom: 20px;
}
.hero-title .accent { color: var(--accent); }
.hero-desc {
  font-size: 17px;
  color: rgba(255,255,255,0.72);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 520px;
}
.hero-actions { display:flex; gap:14px; flex-wrap:wrap; }
.hero-stats {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 3;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255,255,255,0.1);
}
.hero-stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  text-align: center;
}
.hero-stat {
  padding: 28px 20px;
  border-right: 1px solid rgba(255,255,255,0.1);
}
.hero-stat:last-child { border-right: none; }
.hero-stat-num {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}
.hero-stat-label {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}

/* ===== FEATURES STRIP ===== */
.features-strip {
  background: var(--black);
  padding: 20px 0;
  overflow: hidden;
}
.features-strip-inner {
  display: flex;
  gap: 0;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}
.features-strip-inner::-webkit-scrollbar { display:none; }
.feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 36px;
  border-right: 1px solid rgba(255,255,255,0.1);
  flex-shrink: 0;
  white-space: nowrap;
}
.feature-item:last-child { border-right: none; }
.feature-item-icon { color: var(--accent); font-size: 18px; }
.feature-item-text { font-size: 12px; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; color: rgba(255,255,255,0.8); }

/* ===== PRODUCTS GRID ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}
.product-card {
  background: var(--white);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--accent);
}
.product-card-img {
  position: relative;
  height: 248px;
  background: var(--gray-100);
  overflow: hidden;
}
.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}
.product-card:hover .product-card-img img { transform: scale(1.05); }
.product-card-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--accent);
  color: var(--white);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 4px 12px;
}
.product-card-body { padding: 24px; }
.product-card-model {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.product-card-name {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.product-card-desc {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.65;
  margin-bottom: 20px;
}
.product-card-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.product-spec-item { display:flex; flex-direction:column; gap:3px; }
.product-spec-label { font-size:10px; letter-spacing:1px; text-transform:uppercase; color:var(--text-muted); }
.product-spec-value { font-size:14px; font-weight:700; color:var(--black); }
.product-card-actions { display:flex; gap:10px; }

/* ===== WHY US ===== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.why-card {
  padding: 36px 28px;
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  background: var(--white);
  transition: var(--transition);
}
.why-card:hover { box-shadow: var(--shadow-md); transform:translateY(-3px); }
.why-card-icon {
  width: 52px;
  height: 52px;
  background: var(--accent-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
}
.why-card-icon svg { width:26px; height:26px; }
.why-card-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--black);
  margin-bottom: 10px;
}
.why-card-desc { font-size: 13.5px; color: var(--text-sub); line-height: 1.7; }

/* ===== ABOUT SPLIT ===== */
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-split-img { position:relative; }
.about-split-img img { width:100%; object-fit:cover; }
.about-split-img-accent {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 180px;
  height: 180px;
  background: var(--accent);
  z-index: -1;
}
.about-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 36px;
}
.about-fact {
  padding: 20px;
  background: var(--gray-100);
  border-left: 3px solid var(--accent);
}
.about-fact-num {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}
.about-fact-label { font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-sub); }

/* ===== MARQUEE ===== */
.marquee-section { overflow:hidden; background:var(--gray-100); padding:20px 0; border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.marquee-track {
  display:flex;
  gap:60px;
  animation: marquee 30s linear infinite;
  width: max-content;
}
.marquee-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gray-600);
  white-space: nowrap;
  flex-shrink: 0;
}
.marquee-dot { width:6px; height:6px; border-radius:50%; background:var(--accent); flex-shrink:0; }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ===== TESTIMONIALS ===== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.testimonial-card {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 32px 28px;
  position: relative;
}
.testimonial-card::before {
  content: '\201C';
  position: absolute;
  top: 16px;
  right: 24px;
  font-size: 5rem;
  font-family: Georgia, serif;
  color: var(--gray-200);
  line-height: 1;
}
.testimonial-stars { color: var(--accent); margin-bottom: 16px; font-size: 15px; letter-spacing: 2px; }
.testimonial-text { font-size: 14px; color: var(--text-sub); line-height: 1.75; margin-bottom: 24px; }
.testimonial-author { display:flex; align-items:center; gap:12px; }
.testimonial-avatar {
  width: 44px; height: 44px;
  background: var(--accent);
  border-radius: 50%;
  display: flex; align-items:center; justify-content:center;
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  flex-shrink: 0;
}
.testimonial-name { font-size: 14px; font-weight: 700; color: var(--black); }
.testimonial-role { font-size: 12px; color: var(--text-muted); }

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: start;
}
.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}
.contact-info-icon {
  width: 44px;
  height: 44px;
  background: var(--black);
  color: var(--accent);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-info-icon svg { width:20px; height:20px; }
.contact-info-label { font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-muted); margin-bottom: 4px; }
.contact-info-value { font-size: 15px; color: var(--black); font-weight: 600; }

/* ===== FORM ===== */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-main);
  margin-bottom: 8px;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 13px 16px;
  font-size: 14px;
  font-family: var(--font-body);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--text-main);
  transition: var(--transition);
  outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(232,147,10,0.12);
}
.form-textarea { min-height: 140px; resize: vertical; }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:16px; }

/* ===== PRODUCT DETAIL ===== */
.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.product-gallery { position:sticky; top:90px; }
.product-gallery-main {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--gray-100);
  overflow: hidden;
  margin-bottom: 12px;
}
.product-gallery-main img { width:100%; height:100%; object-fit:cover; }
.product-gallery-thumbs { display:flex; gap:10px; flex-wrap:wrap; }
.product-gallery-thumb {
  width: 76px; height: 60px;
  background: var(--gray-100);
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}
.product-gallery-thumb.active, .product-gallery-thumb:hover { border-color: var(--accent); }
.product-gallery-thumb img { width:100%; height:100%; object-fit:cover; }
.product-info-model {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.product-info-name {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--black);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 20px;
  line-height: 1.1;
}
.product-info-desc { font-size: 15px; color: var(--text-sub); line-height: 1.75; margin-bottom: 28px; }
.product-info-divider { border: none; border-top: 1px solid var(--border); margin: 28px 0; }

/* Specs Table */
.specs-table { width:100%; border-collapse:collapse; font-size:14px; margin-top:20px; }
.specs-table tr:nth-child(even) td { background: var(--gray-100); }
.specs-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-sub);
}
.specs-table td:first-child {
  font-weight: 600;
  color: var(--text-main);
  width: 45%;
  border-right: 1px solid var(--border);
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  padding: 20px 0;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { color: var(--gray-400); }

/* ===== FOOTER ===== */
.footer {
  background: var(--black);
  color: rgba(255,255,255,0.7);
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo-text { font-family:var(--font-heading); font-size:24px; font-weight:900; letter-spacing:3px; text-transform:uppercase; color:var(--white); margin-bottom:8px; }
.footer-logo-text span { color:var(--accent); }
.footer-tagline { font-size:11px; letter-spacing:2px; text-transform:uppercase; color:rgba(255,255,255,0.4); margin-bottom:20px; }
.footer-desc { font-size:14px; color:rgba(255,255,255,0.5); line-height:1.75; margin-bottom:24px; }
.footer-social { display:flex; gap:10px; }
.footer-social a {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
  display: flex; align-items:center; justify-content:center;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}
.footer-social a:hover { background:var(--accent); color:var(--white); }
.footer-social svg { width:16px; height:16px; }
.footer-col-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 20px;
}
.footer-links { display:flex; flex-direction:column; gap:10px; }
.footer-links a { font-size:13.5px; color:rgba(255,255,255,0.5); transition:var(--transition); }
.footer-links a:hover { color:var(--accent); padding-left:4px; }
.footer-contact-item { display:flex; gap:12px; margin-bottom:16px; align-items:flex-start; }
.footer-contact-icon { color:var(--accent); margin-top:2px; flex-shrink:0; }
.footer-contact-icon svg { width:15px; height:15px; }
.footer-contact-text { font-size:13.5px; color:rgba(255,255,255,0.5); line-height:1.6; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: 12.5px;
  color: rgba(255,255,255,0.3);
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom a { color:rgba(255,255,255,0.3); transition:var(--transition); }
.footer-bottom a:hover { color:var(--accent); }
.footer-cert { display:flex; gap:16px; align-items:center; }
.cert-badge {
  padding: 4px 12px;
  border: 1px solid rgba(255,255,255,0.15);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  border-radius: 2px;
}

/* ===== TABS ===== */
.tabs { display:flex; gap:0; border-bottom:2px solid var(--border); margin-bottom:32px; }
.tab-btn {
  padding: 14px 28px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
}
.tab-btn.active, .tab-btn:hover { color: var(--accent); border-bottom-color: var(--accent); }
.tab-content { display:none; }
.tab-content.active { display:block; }

/* ===== CERT BADGES ===== */
.cert-section {
  background: var(--gray-100);
  padding: 48px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cert-list { display:flex; gap:40px; align-items:center; justify-content:center; flex-wrap:wrap; }
.cert-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}
.cert-icon {
  width: 64px;
  height: 64px;
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.cert-icon svg { width:28px; height:28px; }
.cert-name { font-size:11px; font-weight:700; letter-spacing:1.5px; text-transform:uppercase; color:var(--text-sub); }

/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--black);
  color: var(--white);
  border: none;
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
}
.back-to-top.visible { opacity:1; pointer-events:auto; }
.back-to-top:hover { background:var(--accent); }
.back-to-top svg { width:18px; height:18px; }

/* ===== HERO VIDEO BG ===== */
.hero-video-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-video-bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

/* ===== PAGE HERO ===== */
.page-hero {
  background: var(--black);
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 40%;
  background: linear-gradient(135deg, transparent 0%, rgba(232,147,10,0.08) 100%);
}
.page-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--white);
  margin-bottom: 10px;
}
.page-hero-sub { font-size:14px; color:rgba(255,255,255,0.5); }

/* ===== PRODUCTS FILTER ===== */
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.filter-btn {
  padding: 8px 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  border: 1.5px solid var(--border);
  background: var(--white);
  color: var(--text-sub);
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn.active, .filter-btn:hover { background:var(--black); color:var(--white); border-color:var(--black); }

/* ===== CTA SECTION ===== */
.cta-section {
  background: var(--black);
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  right: 0;
  width: 50%;
  background: linear-gradient(135deg, transparent 0%, rgba(232,147,10,0.06) 100%);
}
.cta-section::after {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: rgba(232,147,10,0.05);
}
.cta-inner { position:relative; z-index:2; text-align:center; }
.cta-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--white);
  margin-bottom: 16px;
}
.cta-title span { color: var(--accent); }
.cta-sub { font-size:16px; color:rgba(255,255,255,0.55); margin-bottom:36px; }
.cta-actions { display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* ===== IMAGE FALLBACK ===== */
.product-card-img img[src=""],
.product-card-img img:not([src]) {
  display: none;
}
.product-card-img {
  background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-split { grid-template-columns: 1fr; gap:40px; }
  .about-split-img-accent { display:none; }
}
@media (max-width: 900px) {
  .hero-stats-inner { grid-template-columns: repeat(2, 1fr); }
  .product-detail-layout { grid-template-columns: 1fr; }
  .product-gallery { position:static; }
  .contact-grid { grid-template-columns: 1fr; gap:40px; }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .section { padding:60px 0; }
  .container { padding:0 16px; }
  .nav-menu { display:none; flex-direction:column; position:absolute; top:72px; left:0; right:0; background:var(--white); border-bottom:1px solid var(--border); padding:16px; box-shadow:var(--shadow-md); }
  .nav-menu.open { display:flex; }
  .nav-menu a { padding:12px 8px; border-bottom:1px solid var(--gray-100); }
  .nav-toggle { display:block; }
  .nav-inquiry { display:none; }
  .products-grid { grid-template-columns: 1fr; }
  .hero-stats-inner { grid-template-columns: repeat(2, 1fr); }
  .topbar { display:none; }
  .footer-grid { grid-template-columns: 1fr; gap:36px; }
  .why-grid { grid-template-columns:1fr; }
}
@media (max-width: 480px) {
  .hero-stats-inner { grid-template-columns: 1fr 1fr; }
  .about-facts { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction:column; align-items:flex-start; }
  h1 { font-size: 2.2rem; }
}