/* ============================================================
   LUXCARE DAILY CHEMICAL MANUFACTURER — Custom Styles
   Design System: European/US High-End Clean Luxury Export
   ============================================================ */

/* --- CSS Variables --- */
:root {
  --primary: #0F2B5B;
  --primary-light: #1A3F7A;
  --primary-dark: #0A1F40;
  --accent: #D4AF37;
  --accent-light: #E0C55A;
  --accent-dark: #B8962C;
  --sky: #4299E1;
  --sky-light: #6BB5ED;
  --bg-light: #F7FAFC;
  --text-muted: #718096;
  --text-dark: #1A202C;
  --white: #FFFFFF;
  --shadow-sm: 0 4px 20px rgba(15,43,91,0.06);
  --shadow-md: 0 8px 40px rgba(15,43,91,0.10);
  --shadow-lg: 0 16px 60px rgba(15,43,91,0.14);
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --transition: 260ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* --- Reset & Base --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.2;
  color: var(--primary);
}
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.125rem, 2vw, 1.5rem); }
p { margin-bottom: 1rem; color: var(--text-muted); }

.section-tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.section-title {
  margin-bottom: 1rem;
}
.section-desc {
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 640px;
}

/* --- Container --- */
.container-main {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 1rem;
  padding-right: 1rem;
}
@media (min-width: 768px) {
  .container-main { padding-left: 2rem; padding-right: 2rem; }
}

/* --- Section Spacing --- */
.section { padding: 3rem 0; }
@media (min-width: 768px) {
  .section { padding: 5rem 0; }
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(15,43,91,0.06);
  transition: all var(--transition);
}
.nav.scrolled { box-shadow: var(--shadow-sm); }
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
@media (min-width: 768px) {
  .nav-inner { padding: 0 2rem; height: 80px; }
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.nav-logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--sky));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 14px;
}
.nav-logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.3px;
  line-height: 1.2;
}
.nav-logo-text small {
  display: block;
  font-size: 0.625rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  text-decoration: none;
  color: var(--text-dark);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}
.nav-links a:hover,
.nav-links a.active { color: var(--primary); }
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown-menu {
  position: absolute;
  top: 100%; left: -16px;
  min-width: 220px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 0.75rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition);
  list-style: none;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown-menu a {
  display: block;
  padding: 0.625rem 1.5rem;
  font-size: 0.875rem;
  white-space: nowrap;
}
.nav-dropdown-menu a:hover { background: var(--bg-light); }
.nav-dropdown > a { display: flex; align-items: center; gap: 4px; }
.nav-dropdown > a::after {
  content: '';
  width: 0; /* overridden by inline arrow */
}

.nav-cta {
  background: var(--accent);
  color: white !important;
  padding: 0.5rem 1.5rem !important;
  border-radius: 50px;
  font-weight: 600 !important;
  font-size: 0.875rem !important;
  transition: all var(--transition) !important;
}
.nav-cta:hover {
  background: var(--accent-dark);
  box-shadow: 0 4px 16px rgba(212,175,55,0.35);
}
.nav-cta::after { display: none !important; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--primary);
  transition: all var(--transition);
  border-radius: 2px;
}
@media (max-width: 1023px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: white;
    padding: 1.5rem;
    gap: 1rem;
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid rgba(15,43,91,0.06);
  }
  .nav-dropdown-menu {
    position: static;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    padding: 0.25rem 0 0.25rem 1rem;
  }
  .nav-cta { display: inline-block; text-align: center; }
}

/* ============================================================
   HERO BANNER
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, #F0F4FB 0%, #E8EEF6 30%, #F7FAFC 100%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(66,153,225,0.06) 0%, transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -100px; left: -100px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(212,175,55,0.06) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 7rem 1rem 5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}
@media (min-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr 1fr; padding: 0 2rem; }
}
.hero-tag {
  display: inline-block;
  background: rgba(212,175,55,0.12);
  color: var(--accent-dark);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  margin-bottom: 1.5rem;
}
.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.12;
  margin-bottom: 1.5rem;
}
.hero-title span { color: var(--accent); }
.hero-desc {
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 2rem;
  line-height: 1.7;
}
.hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-img {
  display: flex;
  justify-content: center;
  position: relative;
}
.hero-img img {
  width: 100%;
  max-width: 540px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(15,43,91,0.08);
}
.hero-stat h4 {
  font-size: 1.75rem;
  color: var(--accent);
  font-weight: 800;
}
.hero-stat p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 2rem;
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  border-radius: 50px;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  letter-spacing: -0.2px;
}
.btn-primary {
  background: var(--accent);
  color: white;
}
.btn-primary:hover {
  background: var(--accent-light);
  box-shadow: 0 8px 30px rgba(212,175,55,0.3);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: white;
  box-shadow: 0 8px 30px rgba(15,43,91,0.2);
  transform: translateY(-1px);
}
.btn-white {
  background: white;
  color: var(--primary);
}
.btn-white:hover {
  box-shadow: 0 8px 30px rgba(0,0,0,0.1);
  transform: translateY(-1px);
}
.btn-lg {
  padding: 0.875rem 2.5rem;
  font-size: 1rem;
}

/* ============================================================
   SECTION: ABOUT PREVIEW
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}
@media (min-width: 1024px) {
  .about-grid { grid-template-columns: 1fr 1fr; }
}
.about-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.about-img-wrap img {
  width: 100%;
  height: 460px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}
.about-badge {
  position: absolute;
  bottom: 24px; left: 24px;
  background: white;
  padding: 1rem 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 12px;
}
.about-badge-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}
.about-badge p { font-size: 0.8125rem; margin: 0; line-height: 1.3; }
.about-features { margin-top: 1.5rem; }
.about-feature {
  display: flex;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(15,43,91,0.06);
}
.about-feature-icon {
  width: 40px; height: 40px;
  min-width: 40px;
  background: rgba(15,43,91,0.05);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.about-feature h5 { font-size: 0.9375rem; margin-bottom: 2px; }
.about-feature p { font-size: 0.8125rem; margin: 0; }

/* ============================================================
   SECTION: PRODUCTS GRID
   ============================================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .products-grid { gap: 2rem; }
}
.product-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid rgba(15,43,91,0.04);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.product-card-img {
  height: 260px;
  overflow: hidden;
  background: #F0F4FB;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 400ms ease;
}
.product-card:hover .product-card-img img {
  transform: scale(1.05);
}
.product-card-body {
  padding: 1.5rem;
}
.product-card-cat {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.product-card h4 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}
.product-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
}

/* ============================================================
   SECTION: ADVANTAGES
   ============================================================ */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .advantages-grid { gap: 2rem; }
}
.advantage-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid rgba(15,43,91,0.04);
}
.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.advantage-icon {
  width: 64px; height: 64px;
  margin: 0 auto 1.25rem;
  background: linear-gradient(135deg, rgba(15,43,91,0.06), rgba(66,153,225,0.08));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
}
.advantage-card h4 {
  font-size: 1.0625rem;
  margin-bottom: 0.5rem;
}
.advantage-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
}

/* ============================================================
   SECTION: CTA BANNER
   ============================================================ */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, #0A1F40 100%);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(212,175,55,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-section h2 { color: white; margin-bottom: 0.75rem; }
.cta-section p { color: rgba(255,255,255,0.75); margin-bottom: 2rem; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-section .section-tag { color: var(--accent-light); }

/* ============================================================
   SECTION: NEWS PREVIEW
   ============================================================ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .news-grid { gap: 2rem; }
}
.news-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid rgba(15,43,91,0.04);
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.news-card-img {
  height: 200px;
  overflow: hidden;
}
.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 400ms ease;
}
.news-card:hover .news-card-img img { transform: scale(1.05); }
.news-card-body { padding: 1.5rem; }
.news-card-date {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.news-card h4 { font-size: 1.0625rem; margin-bottom: 0.5rem; }
.news-card p { font-size: 0.875rem; color: var(--text-muted); margin: 0; }

/* ============================================================
   SECTION: BRAND LOGOS
   ============================================================ */
.brand-scroll {
  display: flex;
  gap: 3rem;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0.5;
}
.brand-scroll span {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.7);
  padding: 4rem 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}
.footer h4 {
  color: white;
  font-size: 1rem;
  margin-bottom: 1.25rem;
  font-weight: 600;
  letter-spacing: 0;
}
.footer p, .footer a { font-size: 0.875rem; }
.footer a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  display: block;
  margin-bottom: 0.625rem;
  transition: color var(--transition);
}
.footer a:hover { color: var(--accent-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 1.5rem 0;
  font-size: 0.8125rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

/* ============================================================
   PAGE BANNER (inner pages)
   ============================================================ */
.page-banner {
  background: linear-gradient(160deg, #F0F4FB 0%, #E8EEF6 40%, #F7FAFC 100%);
  padding: 8rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-banner h1 { margin-bottom: 0.75rem; }
.page-banner .breadcrumb {
  font-size: 0.875rem;
  color: var(--text-muted);
}
.page-banner .breadcrumb a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}
.page-banner .breadcrumb span { color: var(--accent); }

/* ============================================================
   ABOUT US PAGE
   ============================================================ */
.about-story-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}
@media (min-width: 1024px) {
  .about-story-grid { grid-template-columns: 1fr 1fr; }
}
.about-story-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.about-story-img img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* Workshop / Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.gallery-grid img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--radius);
  transition: all var(--transition);
}
.gallery-grid img:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

/* Certifications */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
}
.cert-card {
  text-align: center;
  padding: 2rem 1rem;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(15,43,91,0.04);
}
.cert-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}
.cert-card h5 { font-size: 0.9375rem; margin-bottom: 0.25rem; }
.cert-card p { font-size: 0.8125rem; margin: 0; }

/* Timeline */
.timeline {
  position: relative;
  padding-left: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: rgba(15,43,91,0.1);
}
.timeline-item {
  position: relative;
  margin-bottom: 2rem;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -2rem; top: 6px;
  width: 12px; height: 12px;
  background: var(--accent);
  border-radius: 50%;
  transform: translateX(-5px);
}
.timeline-year {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}
.timeline-item h4 { font-size: 1rem; margin: 0.25rem 0; }
.timeline-item p { font-size: 0.875rem; margin: 0; }

/* ============================================================
   PRODUCTS PAGE
   ============================================================ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 3rem;
}
.filter-btn {
  padding: 0.5rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  border: 1.5px solid rgba(15,43,91,0.15);
  background: white;
  border-radius: 50px;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-dark);
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ============================================================
   PRODUCT DETAIL PAGE
   ============================================================ */
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
@media (min-width: 1024px) {
  .product-detail-grid { grid-template-columns: 1fr 1fr; }
}
.product-detail-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #F0F4FB;
}
.product-detail-img img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}
.product-detail-info h2 { margin-bottom: 0.5rem; }
.product-detail-cat {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  margin-bottom: 1rem;
}
.product-detail-price {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 1.25rem;
}
.product-spec {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 1.5rem 0;
  padding: 1.5rem;
  background: var(--bg-light);
  border-radius: var(--radius);
}
.product-spec-item h6 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 4px;
  font-weight: 600;
}
.product-spec-item p { font-size: 0.9375rem; font-weight: 600; color: var(--text-dark); margin: 0; }

/* ============================================================
   NEWS DETAIL PAGE
   ============================================================ */
.article-content {
  max-width: 768px;
  margin: 0 auto;
}
.article-meta {
  display: flex;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.article-featured-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2rem;
}
.article-featured-img img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}
.article-body h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}
.article-body p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
@media (min-width: 1024px) {
  .contact-grid { grid-template-columns: 1fr 1.2fr; }
}
.contact-info-card {
  background: var(--primary);
  color: white;
  padding: 2.5rem;
  border-radius: var(--radius-lg);
}
.contact-info-card h3 { color: white; margin-bottom: 1.5rem; }
.contact-info-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}
.contact-info-icon {
  width: 44px; height: 44px;
  min-width: 44px;
  background: rgba(255,255,255,0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.contact-info-item h5 { color: white; font-size: 0.875rem; font-weight: 600; margin-bottom: 2px; }
.contact-info-item p { color: rgba(255,255,255,0.7); font-size: 0.875rem; margin: 0; }

.contact-form {
  background: white;
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(15,43,91,0.04);
}
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  font-family: 'Inter', sans-serif;
  border: 1.5px solid rgba(15,43,91,0.12);
  border-radius: var(--radius-sm);
  background: var(--bg-light);
  transition: all var(--transition);
  color: var(--text-dark);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--sky);
  box-shadow: 0 0 0 3px rgba(66,153,225,0.1);
  background: white;
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* ============================================================
   FLOATING CUSTOMER SERVICE
   ============================================================ */
.floating-cs {
  position: fixed;
  right: 20px;
  bottom: 120px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.floating-cs-btn {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: white;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: all var(--transition);
  border: 1px solid rgba(15,43,91,0.06);
  text-decoration: none;
  color: var(--primary);
  font-size: 1.2rem;
}
.floating-cs-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.floating-cs-tooltip {
  position: absolute;
  right: 60px;
  background: var(--primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.8125rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transform: translateX(8px);
  transition: all var(--transition);
  pointer-events: none;
}
.floating-cs-btn:hover .floating-cs-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}
.floating-cs-qr {
  position: absolute;
  right: 60px;
  bottom: 0;
  background: white;
  padding: 0.75rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateX(8px);
  transition: all var(--transition);
  pointer-events: none;
  width: 160px;
  text-align: center;
}
.floating-cs-btn:hover .floating-cs-qr {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}
.floating-cs-qr img {
  width: 120px; height: 120px;
  background: #f5f5f5;
  border-radius: 4px;
}
.floating-cs-qr p {
  font-size: 0.6875rem;
  color: var(--text-muted);
  margin: 0.5rem 0 0;
}

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 640ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 60px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 998;
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--accent);
  transform: translateY(-2px);
}

/* ============================================================
   RESPONSIVE FINE-TUNING
   ============================================================ */
@media (max-width: 767px) {
  .hero-stats { flex-wrap: wrap; gap: 1.5rem; }
  .product-detail-price { font-size: 1.35rem; }
  .about-badge { bottom: 12px; left: 12px; padding: 0.75rem 1rem; }
  .about-badge-num { font-size: 1.5rem; }
  .contact-info-card,
  .contact-form { padding: 1.5rem; }
  .floating-cs { right: 12px; bottom: 100px; }
  .back-to-top { right: 12px; bottom: 50px; }
  .article-featured-img img { height: 240px; }
}