/* ============================================
   Roadnet - Road Marking Machine
   Industrial B2B Design System
   Primary Color: #F56500 (Road Marking Orange)
   ============================================ */

:root {
  /* Brand Colors */
  --orange: #F56500;
  --orange-dark: #D14E00;
  --orange-light: #FF7A1E;
  --orange-50: #FFF4ED;
  --orange-100: #FFE6D5;

  /* Surfaces */
  --canvas: #FAFAFA;
  --white: #FFFFFF;
  --dark: #1A1A1A;
  --dark-2: #2A2A2A;
  --dark-3: #333333;

  /* Text */
  --ink: #1A1A1A;
  --body: #4A4A4A;
  --muted: #888888;
  --light: #B0B0B0;

  /* Borders */
  --border: #E5E5E5;
  --border-dark: #D0D0D0;

  /* Accent */
  --steel: #475569;
  --steel-light: #64748B;
  --asphalt: #1E293B;

  /* Radius */
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);

  /* Transitions */
  --t-fast: 0.15s ease;
  --t-norm: 0.3s ease;
}

/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--canvas);
  color: var(--body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 { color: var(--ink); font-weight: 700; line-height: 1.2; }
h1 { font-size: 3rem; letter-spacing: -0.5px; }
h2 { font-size: 2.2rem; letter-spacing: -0.3px; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.2rem; }
a { color: var(--orange); text-decoration: none; transition: color var(--t-fast); }
a:hover { color: var(--orange-dark); }
img { max-width: 100%; height: auto; display: block; }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 800px; margin: 0 auto; padding: 0 24px; }

/* ====================== HEADER ====================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--t-norm);
}
.site-header.scrolled { box-shadow: var(--shadow-md); }

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo-mark {
  width: 36px; height: 36px;
  background: var(--orange);
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 1.1rem;
}
.logo-img {
  width: 40px; height: 40px;
  border-radius: var(--r-sm);
  object-fit: cover;
  flex-shrink: 0;
}
.logo-text {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--ink);
  letter-spacing: -0.3px;
}
.logo-text span { color: var(--orange); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.nav-menu a {
  color: var(--ink);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 8px 0;
  position: relative;
  transition: color var(--t-fast);
}
.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--orange);
  transition: width var(--t-norm);
}
.nav-menu a:hover::after, .nav-menu a.active::after { width: 100%; }
.nav-menu a:hover, .nav-menu a.active { color: var(--orange); }

.nav-cta {
  background: var(--orange);
  color: white !important;
  padding: 9px 20px !important;
  border-radius: var(--r-md);
  font-weight: 600 !important;
  font-size: 0.9rem !important;
  transition: background var(--t-fast), transform var(--t-fast);
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--orange-dark); transform: translateY(-1px); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px; height: 32px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--ink);
  transition: var(--t-norm);
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ====================== HERO ====================== */
.hero {
  position: relative;
  min-height: 600px;
  background: var(--dark);
  overflow: hidden;
  display: flex;
  align-items: center;
  padding-top: 64px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.5;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,26,26,0.6) 0%, rgba(26,26,26,0.35) 50%, rgba(245,101,0,0.15) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 0;
}
.hero-badge {
  display: inline-block;
  background: rgba(245,101,0,0.2);
  border: 1px solid var(--orange);
  color: var(--orange-light);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.hero h1 {
  color: white;
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 20px;
  max-width: 700px;
}
.hero h1 .accent { color: var(--orange-light); }
.hero-sub {
  color: rgba(255,255,255,0.8);
  font-size: 1.25rem;
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.6;
}
.hero-slogan {
  position: relative;
  display: inline-block;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .01em;
  line-height: 1.5;
  color: var(--white);
  padding: 12px 20px 12px 18px;
  margin-bottom: 36px;
  max-width: 560px;
  background: rgba(245,101,0,0.14);
  border-left: 4px solid var(--orange);
  border-radius: 0 10px 10px 0;
  backdrop-filter: blur(6px);
}
.hero-slogan-mark {
  color: var(--orange-light);
  font-size: 1.4em;
  font-weight: 800;
  line-height: 0;
  position: relative;
  top: 4px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--r-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--t-fast);
  border: none;
  text-decoration: none;
}
.btn-primary {
  background: var(--orange);
  color: white;
}
.btn-primary:hover { background: var(--orange-dark); color: white; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(245,101,0,0.3); }
.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.3);
}
.btn-outline:hover { border-color: white; background: rgba(255,255,255,0.1); color: white; }
.btn-dark { background: var(--dark); color: white; }
.btn-dark:hover { background: var(--dark-2); color: white; }

/* ====================== SECTIONS ====================== */
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.section-title {
  text-align: center;
  margin-bottom: 56px;
}
.section-title .eyebrow {
  display: inline-block;
  color: var(--orange);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title h2 {
  font-size: 2.4rem;
  margin-bottom: 16px;
}
.section-title p {
  color: var(--muted);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.1rem;
}

/* ====================== PRODUCT GRID ====================== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all var(--t-norm);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--orange);
}
.product-card-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--orange-50);
  position: relative;
}
.product-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--t-norm);
}
.product-card:hover .product-card-img img { transform: scale(1.05); }
.product-card-model {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--orange);
  color: white;
  padding: 4px 12px;
  border-radius: var(--r-sm);
  font-size: 0.8rem;
  font-weight: 700;
}
.product-card-price {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px;
  margin: 2px 0 14px;
}
.product-card-price .price-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--muted);
}
.product-card-price .price-value {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--orange-dark);
}
.product-card-price .price-unit {
  font-size: 0.8rem;
  color: var(--muted);
}
.product-price-tag {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 22px;
  padding: 10px 18px;
  background: var(--orange-50);
  border: 1px solid var(--orange-100);
  border-radius: var(--r-md);
}
.product-price-tag .price-value {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--orange-dark);
}
.product-price-tag .price-note {
  font-size: 0.85rem;
  color: var(--muted);
}

/* ===== Inquiry form (product pages + contact) ===== */
.inquiry-form { max-width: 720px; margin: 0 auto; text-align: left; }
.inquiry-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.inquiry-field label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.inquiry-field input, .inquiry-field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-dark);
  border-radius: var(--r-md);
  font-size: 1rem;
  font-family: inherit;
  color: var(--ink);
  background: var(--white);
  transition: border-color 0.15s;
}
.inquiry-field input:focus, .inquiry-field textarea:focus {
  outline: none;
  border-color: var(--orange);
}
.inquiry-form textarea { margin-top: 16px; resize: vertical; }
.inquiry-actions { display: flex; align-items: center; gap: 18px; margin-top: 20px; flex-wrap: wrap; }
.inquiry-status { font-size: 0.95rem; margin: 0; min-height: 1.2em; }
.inquiry-status.err { color: #D93025; }
.hp-wrap { position: absolute; left: -9999px; top: -9999px; opacity: 0; height: 0; overflow: hidden; }
.inquiry-success { text-align: center; padding: 32px 8px; }
.inquiry-success h3 { font-size: 1.5rem; margin-bottom: 12px; color: var(--ink); }
.inquiry-success p { color: var(--body); max-width: 560px; margin: 0 auto 10px; }
.inquiry-success-alt a { color: var(--orange-dark); font-weight: 600; }
.product-price-tag .price-request { font-size: 1.1rem; }
@media (max-width: 640px) {
  .inquiry-grid { grid-template-columns: 1fr; }
}
.product-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.product-card-body h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: var(--ink);
}
.product-card-body p {
  font-size: 0.9rem;
  color: var(--muted);
  flex: 1;
  margin-bottom: 16px;
}
.product-card-link {
  color: var(--orange);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--t-fast);
}
.product-card-link:hover { gap: 10px; }

/* ====================== FEATURES ====================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-item {
  text-align: center;
  padding: 32px 20px;
}
.feature-icon {
  width: 56px; height: 56px;
  background: var(--orange-50);
  border-radius: var(--r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.feature-icon svg { width: 28px; height: 28px; stroke: var(--orange); }
.feature-item h3 { font-size: 1.1rem; margin-bottom: 8px; }
.feature-item p { font-size: 0.9rem; color: var(--muted); }

/* ====================== STATS BAND ====================== */
.stats-band {
  background: var(--dark);
  padding: 80px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-item .stat-num {
  font-size: 3rem;
  font-weight: 800;
  color: var(--orange);
  letter-spacing: -1px;
}
.stat-item .stat-label {
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
  margin-top: 8px;
}

/* ====================== CTA BAND ====================== */
.cta-band {
  background: var(--orange);
  padding: 80px 0;
  text-align: center;
}
.cta-band h2 { color: white; margin-bottom: 16px; }
.cta-band p { color: rgba(255,255,255,0.9); font-size: 1.15rem; margin-bottom: 32px; }
.cta-band .btn { background: var(--dark); color: white; }
.cta-band .btn:hover { background: var(--dark-2); transform: translateY(-2px); }

/* ====================== FOOTER ====================== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.6);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .logo-text { color: white; }
.footer-brand p { margin-top: 16px; font-size: 0.9rem; line-height: 1.6; }
.footer-col h4 {
  color: white;
  font-size: 0.95rem;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: color var(--t-fast);
}
.footer-col ul li a:hover { color: var(--orange-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

/* ====================== PAGE BANNER ====================== */
.page-banner {
  background: var(--dark);
  min-height: 55vh;
  display: flex;
  align-items: center;
  padding: 140px 0 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background-size: cover;
  background-position: center;
}
.page-banner::before {
  content: '';
  position: absolute;
  bottom: 0; right: 0;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(245,101,0,0.15) 0%, transparent 70%);
}
.page-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,26,26,0.7) 0%, rgba(26,26,26,0.45) 50%, rgba(245,101,0,0.18) 100%);
  z-index: 1;
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1, .page-banner .banner-title { color: white; margin-bottom: 12px; position: relative; }
.breadcrumb { color: rgba(255,255,255,0.75); font-size: 0.85rem; margin-bottom: 14px; position: relative; letter-spacing: 0.3px; }
.breadcrumb a { color: rgba(255,255,255,0.9); text-decoration: none; }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }
.breadcrumb span { margin: 0 8px; opacity: 0.6; }
.breadcrumb em { font-style: normal; color: #fff; font-weight: 600; }
.page-banner .banner-title { font-size: 3rem; letter-spacing: -0.5px; font-weight: 700; line-height: 1.2; }
.page-banner p { color: rgba(255,255,255,0.8); font-size: 1.1rem; position: relative; }

/* ====================== PRODUCT DETAIL ====================== */
.product-detail { padding: 64px 0; }
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 28px;
  padding: 9px 18px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--orange);
  background: var(--orange-50);
  border: 1px solid var(--orange-100);
  border-radius: 999px;
  transition: all var(--t-fast);
}
.back-link:hover { background: var(--orange); color: #fff; transform: translateX(-3px); }
.back-link svg { width: 16px; height: 16px; flex: none; }
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.product-gallery-main {
  width: 100%;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--orange-50);
  margin-bottom: 16px;
}
.product-gallery-main img { width: 100%; height: auto; object-fit: contain; }
.product-gallery-thumbs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.product-gallery-thumbs img {
  width: 80px; height: 80px;
  object-fit: cover;
  border-radius: var(--r-sm);
  cursor: pointer;
  border: 2px solid transparent;
  transition: border var(--t-fast);
}
.product-gallery-thumbs img:hover, .product-gallery-thumbs img.active { border-color: var(--orange); }

.product-info h1 { font-size: 2rem; margin-bottom: 8px; }
.product-info h2 { font-size: 1.5rem; margin: 20px 0 8px; }
.product-info h2.feature-title { font-size: 1.25rem; margin: 28px 0 4px; }
.product-info .model-tag {
  display: inline-block;
  background: var(--orange-50);
  color: var(--orange);
  padding: 6px 16px;
  border-radius: var(--r-sm);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 20px;
}
.product-info .desc { color: var(--body); margin-bottom: 28px; font-size: 1.05rem; }

.spec-table {
  width: 100%;
  border-collapse: collapse;
}
.spec-table th, .spec-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}
.spec-table th {
  background: var(--orange-50);
  color: var(--ink);
  font-weight: 600;
  width: 40%;
}
.spec-table td { color: var(--body); }
.spec-table-wrapper { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ====================== CONTACT ====================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-info-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 32px;
}
.contact-info-card h3 { margin-bottom: 24px; }
.contact-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}
.contact-row .icon {
  width: 40px; height: 40px;
  background: var(--orange-50);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-row .icon svg { width: 20px; height: 20px; stroke: var(--orange); }
.contact-row .label { font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.contact-row .value { font-size: 1rem; color: var(--ink); font-weight: 500; }

/* ====================== ABOUT ====================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.about-img {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  overflow: hidden;
}
.about-img img { width: 100%; height: 100%; object-fit: cover; }

/* ====================== CONTACT CIRCLE IMAGE ====================== */
.contact-circle-img {
  display: inline-block;
  width: 280px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.contact-circle-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-text h2 { margin-bottom: 20px; }
.about-text p { margin-bottom: 16px; color: var(--body); }
.about-list { list-style: none; margin-top: 24px; }
.about-list li {
  padding: 10px 0 10px 32px;
  position: relative;
  color: var(--body);
}
.about-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--orange);
  font-weight: 800;
  font-size: 1.2rem;
}

.feature-title {
  margin: 28px 0 4px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  position: relative;
  padding-left: 14px;
}
.feature-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background: var(--orange);
}

/* ====================== PROJECT GALLERY ====================== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.project-item {
  border-radius: var(--r-lg);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}
.project-item img { width: 100%; height: 300px; object-fit: cover; transition: transform var(--t-norm); }
.project-item:hover img { transform: scale(1.05); }
.project-item .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 50%, rgba(0,0,0,0.7));
  display: flex;
  align-items: flex-end;
  padding: 24px;
}
.project-item .overlay h3 { color: white; font-size: 1.2rem; }

/* ====================== VIDEO COVERS (click-to-play) ====================== */
.video-cover {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-color: var(--dark);
  cursor: pointer;
  display: flex;
  align-items: flex-end;
  transition: filter .2s ease;
}
.video-cover:hover { filter: brightness(1.05); }
.video-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.55) 0%, rgba(0,0,0,0) 45%);
}
.video-cover .play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 66px;
  height: 66px;
  border-radius: 50%;
  background: rgba(245,101,0,.92);
  box-shadow: 0 6px 22px rgba(0,0,0,.4);
  transition: transform .2s ease, background .2s ease;
}
.video-cover .play-btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 54%;
  transform: translate(-50%, -50%);
  border-style: solid;
  border-width: 12px 0 12px 21px;
  border-color: transparent transparent transparent #fff;
}
.video-cover:hover .play-btn {
  transform: translate(-50%, -50%) scale(1.1);
  background: #ff7a1a;
}
.video-cover .video-label {
  position: relative;
  z-index: 2;
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  padding: 14px 16px;
  text-shadow: 0 1px 4px rgba(0,0,0,.7);
}

/* ====================== PROJECT VIDEOS ====================== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.video-item {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--dark);
  box-shadow: var(--shadow-lg);
}
.video-item iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}
@media (max-width: 768px) {
  .video-grid { grid-template-columns: 1fr; }
}

/* ====================== ANIMATIONS ====================== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-up { animation: fadeUp 0.6s ease forwards; }
.delay-1 { animation-delay: 0.1s; opacity: 0; }
.delay-2 { animation-delay: 0.2s; opacity: 0; }
.delay-3 { animation-delay: 0.3s; opacity: 0; }

/* ====================== FLOATING CONSULT BUTTON ====================== */
.cs-float {
  position: fixed;
  right: 24px;
  bottom: 96px;
  z-index: 9998;
  width: 60px;
  height: 60px;
  border: none;
  border-radius: 50%;
  background: var(--orange);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(245, 101, 0, 0.45);
  transition: transform 0.2s, box-shadow 0.2s;
}
.cs-float:hover { transform: scale(1.08); box-shadow: 0 6px 22px rgba(245, 101, 0, 0.6); }
.cs-float svg { width: 30px; height: 30px; display: block; }
.cs-float-tooltip {
  position: absolute;
  right: 72px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--dark);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
.cs-float:hover .cs-float-tooltip { opacity: 1; }

/* ====================== CONSULT PANEL ====================== */
.cs-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}
.cs-overlay.open { opacity: 1; visibility: visible; }
.cs-panel {
  background: var(--white);
  border-radius: var(--r-lg);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 26px 28px 28px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  transform: translateY(12px);
  transition: transform 0.2s;
}
.cs-overlay.open .cs-panel { transform: translateY(0); }
.cs-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.cs-head h2 { font-size: 1.35rem; margin-bottom: 6px; }
.cs-head p { font-size: 0.9rem; color: var(--muted); line-height: 1.5; }
.cs-close {
  background: none;
  border: none;
  font-size: 1.8rem;
  line-height: 1;
  color: var(--muted);
  cursor: pointer;
  padding: 0 4px;
  flex: none;
}
.cs-close:hover { color: var(--ink); }
.cs-row { margin-bottom: 14px; }
.cs-row label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.cs-row label span { color: var(--orange); }
.cs-row input,
.cs-row textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border-dark);
  border-radius: var(--r-md);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--white);
  font-family: inherit;
}
.cs-row input:focus,
.cs-row textarea:focus { outline: none; border-color: var(--orange); }
.cs-row textarea { resize: vertical; }
.cs-hp { position: absolute; left: -9999px; top: -9999px; height: 0; overflow: hidden; opacity: 0; }
.cs-status { font-size: 0.9rem; margin: 0 0 12px; min-height: 1.2em; }
.cs-status.err { color: #D93025; }
.cs-submit {
  width: 100%;
  background: var(--orange);
  color: #fff;
  border: none;
  border-radius: var(--r-md);
  padding: 14px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s;
}
.cs-submit:hover { background: var(--orange-dark); }
.cs-submit:disabled { opacity: 0.7; cursor: default; }
.cs-alt { font-size: 0.85rem; color: var(--muted); text-align: center; margin-top: 14px; }
.cs-alt a { color: var(--orange-dark); font-weight: 600; }
.cs-done h3 { font-size: 1.3rem; margin-bottom: 10px; }
.cs-done p { color: var(--body); font-size: 0.95rem; }
.cs-done .cs-submit { margin-top: 18px; }
@media (max-width: 768px) {
  .cs-float { right: 16px; bottom: 82px; width: 54px; height: 54px; }
  .cs-float svg { width: 27px; height: 27px; }
  .cs-float-tooltip { display: none; }
  .cs-overlay { align-items: flex-end; padding: 0; }
  .cs-panel { max-width: none; border-radius: 16px 16px 0 0; max-height: 92vh; padding: 22px 20px 24px; }
}
.delay-4 { animation-delay: 0.4s; opacity: 0; }

/* ====================== RESPONSIVE ====================== */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .product-detail-grid, .contact-grid, .about-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 0;
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    transition: var(--t-norm);
    pointer-events: none;
  }
  .nav-menu.open { transform: translateY(0); opacity: 1; pointer-events: all; }
  .nav-menu li { width: 100%; }
  .nav-menu a { display: block; padding: 14px 0; border-bottom: 1px solid var(--border); }

  .hero h1 { font-size: 2.2rem; }
  .hero-sub { font-size: 1.05rem; }
  .hero-slogan { font-size: .98rem; padding: 10px 14px; }
  .section { padding: 64px 0; }
  .section-title h2 { font-size: 1.8rem; }
  .product-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .project-grid { grid-template-columns: 1fr; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
  /* Mobile tap-target safety: ensure nav & footer links meet >=48px */
  .nav-menu a { min-height: 48px; display: flex; align-items: center; }
  .footer-col ul li a { display: inline-block; min-height: 44px; line-height: 44px; padding: 0 8px; }
  .footer-grid a { display: inline-block; min-height: 44px; }

}

/* ===== Floating WhatsApp contact button ===== */
.wa-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 9999;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.45);
  transition: transform .2s ease, box-shadow .2s ease;
}
.wa-float:hover { transform: scale(1.08); box-shadow: 0 6px 22px rgba(37, 211, 102, 0.6); }
.wa-float svg { width: 34px; height: 34px; fill: #fff; display: block; }
.wa-float-tooltip {
  position: absolute;
  right: 72px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--dark);
  color: #fff;
  font-size: .8rem;
  font-weight: 600;
  white-space: nowrap;
  padding: 7px 12px;
  border-radius: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease;
}
.wa-float-tooltip::after {
  content: "";
  position: absolute;
  right: -5px;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: var(--dark);
}
.wa-float:hover .wa-float-tooltip { opacity: 1; }
@media (max-width: 768px) {
  .wa-float { right: 16px; bottom: 16px; width: 54px; height: 54px; }
  .wa-float svg { width: 30px; height: 30px; }
  .wa-float-tooltip { display: none; }
}

/* ===== Paint types section (Thermoplastic Paint detail) ===== */
.paint-types { padding: 64px 0; background: var(--orange-50); }
.paint-types .section-title { margin-bottom: 44px; }
.paint-types .type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.paint-types .type-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 40px 28px 30px;
  box-shadow: var(--shadow-md);
  scroll-margin-top: 96px;
  transition: transform var(--t-norm), box-shadow var(--t-norm);
}
.paint-types .type-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.paint-types .type-model {
  position: absolute;
  top: -14px;
  left: 28px;
  background: var(--orange);
  color: #fff;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .04em;
  padding: 6px 16px;
  border-radius: 20px;
}
.paint-types .type-card h3 {
  font-size: 1.18rem;
  margin: 4px 0 14px;
  color: var(--dark);
}
.paint-types .type-card p {
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 16px;
}
.paint-types .type-card .about-list li { font-size: .92rem; }
@media (max-width: 900px) {
  .paint-types .type-grid { grid-template-columns: 1fr; }
}

/* ===== FAQ (AEO / GEO) ===== */
.faq-section { background: var(--orange-50, #FFF4ED); }
.faq-list { max-width: 880px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--white, #fff);
  border: 1px solid var(--rule, #E5E5E5);
  border-radius: 10px;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 20px;
  font-weight: 600;
  color: var(--ink, #1A1A1A);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--orange, #F56500);
  line-height: 1;
}
.faq-item[open] summary::after { content: "\2212"; }
.faq-answer { padding: 0 20px 18px; color: var(--body, #4A4A4A); line-height: 1.7; }
.faq-answer p { margin: 0; }