/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy: #1a2744;
  --navy-light: #243352;
  --charcoal: #2c3e50;
  --dark: #121a2b;
  --white: #ffffff;
  --off-white: #fafbfc;
  --light-gray: #f4f6f9;
  --medium-gray: #e2e6ec;
  --border: #eaedf2;
  --text: #2d3748;
  --text-light: #718096;
  --text-muted: #a0aec0;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-soft: rgba(59,130,246,0.08);
  --gold: #f59e0b;
  --success: #10b981;
  --shadow-xs: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow: 0 4px 24px rgba(0,0,0,0.07);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.1);
  --shadow-hover: 0 20px 60px rgba(0,0,0,0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.33, 1, 0.68, 1);
  --transition: 0.4s var(--ease);
  --transition-fast: 0.25s var(--ease);
  --transition-slow: 0.6s var(--ease);
}

html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; color: var(--text); line-height: 1.7; overflow-x: hidden; background: var(--white); }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: all var(--transition-fast); }
ul { list-style: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 960px; margin: 0 auto; padding: 0 24px; }

/* ===== SECTION SPACING ===== */
.section { padding: 120px 0; }
.section-title {
  font-size: 2.6rem;
  font-weight: 300;
  letter-spacing: -0.03em;
  color: var(--navy);
  text-align: center;
  margin-bottom: 16px;
  line-height: 1.2;
}
.section-subtitle {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text-light);
  text-align: center;
  max-width: 560px;
  margin: 0 auto 64px;
  line-height: 1.7;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 32px;
  border-radius: 50px;
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  letter-spacing: -0.01em;
}
.btn-primary {
  background: var(--navy);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--charcoal);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(26,39,68,0.3);
}
.btn-secondary {
  background: var(--light-gray);
  color: var(--navy);
}
.btn-secondary:hover {
  background: var(--medium-gray);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.3);
}
.btn-outline:hover {
  background: var(--white);
  color: var(--navy);
  border-color: var(--white);
}
.btn-sm { padding: 11px 24px; font-size: 0.88rem; }
.btn-accent {
  background: var(--accent);
  color: var(--white);
}
.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59,130,246,0.3);
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all 0.5s var(--ease);
}
.header.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}
.header.scrolled .logo { color: var(--navy); }
.header.scrolled .logo span { color: var(--accent); }
.header.scrolled .nav-links a { color: var(--text); }
.header.scrolled .nav-links a:hover,
.header.scrolled .nav-links a.active { color: var(--navy); }
.header.scrolled .header-phone { color: var(--text); }
.header.scrolled .menu-toggle { color: var(--navy); }

.header-top {
  background: var(--dark);
  padding: 10px 0;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.02em;
}
.header-top .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header-top a { color: rgba(255,255,255,0.85); }
.header-top a:hover { color: var(--white); }
.header-top i { margin-right: 6px; font-size: 0.75rem; }

.header-main { padding: 16px 0; }
.header-main .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  transition: opacity var(--transition);
}
.logo:hover { opacity: 0.85; }
.logo-img {
  height: 55px;
  width: auto;
}

.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a {
  color: rgba(255,255,255,0.75);
  font-weight: 450;
  font-size: 0.9rem;
  letter-spacing: -0.01em;
  position: relative;
  transition: all var(--transition-fast);
}
.nav-links a:hover,
.nav-links a.active { color: var(--white); }
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  width: 0;
  height: 1.5px;
  background: currentColor;
  transition: all var(--transition);
  transform: translateX(-50%);
  opacity: 0;
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; opacity: 1; }

.header-cta { display: flex; align-items: center; gap: 20px; }
.header-phone {
  color: rgba(255,255,255,0.85);
  font-weight: 500;
  font-size: 0.9rem;
  transition: color var(--transition);
}
.header-phone i { color: var(--accent); margin-right: 6px; }

/* Mobile Menu */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.4rem;
  cursor: pointer;
  transition: color var(--transition);
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--white);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.mobile-menu.active { display: flex; opacity: 1; }
.mobile-menu a {
  color: var(--navy);
  font-size: 1.4rem;
  font-weight: 300;
  letter-spacing: -0.02em;
}
.mobile-close {
  position: absolute;
  top: 24px;
  right: 24px;
  background: none;
  border: none;
  color: var(--navy);
  font-size: 1.6rem;
  cursor: pointer;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--navy);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('https://images.unsplash.com/photo-1615874959474-d609969a20ed?w=1920&q=80') center/cover no-repeat;
  opacity: 0.12;
  transition: transform 10s linear;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(26,39,68,0.3) 0%, rgba(26,39,68,0.8) 100%);
}
.hero .container { position: relative; z-index: 2; }
.hero-content { max-width: 680px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.7);
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 32px;
  border: 1px solid rgba(255,255,255,0.1);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.hero h1 {
  font-size: 4rem;
  font-weight: 300;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.04em;
}
.hero h1 strong {
  font-weight: 600;
}
.hero p {
  font-size: 1.15rem;
  font-weight: 400;
  color: rgba(255,255,255,0.6);
  margin-bottom: 40px;
  max-width: 480px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 72px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.hero-stat h3 {
  font-size: 2.2rem;
  font-weight: 300;
  color: var(--white);
  letter-spacing: -0.03em;
}
.hero-stat p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
  margin-top: 4px;
}

/* ===== CATEGORIES ===== */
.categories { background: var(--white); }
.category-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.category-card {
  background: var(--white);
  border-radius: var(--radius);
  text-align: left;
  transition: all var(--transition);
  cursor: pointer;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}
.category-img {
  width: 100%;
  height: 220px;
  overflow: hidden;
  position: relative;
}
.category-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.category-card:hover .category-img img {
  transform: scale(1.08);
}
.category-img.placeholder-img {
  background: linear-gradient(135deg, var(--light-gray) 0%, #e8e4e0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.category-img.placeholder-img i {
  font-size: 3rem;
  color: var(--navy);
  opacity: 0.2;
}
.category-info {
  padding: 32px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.category-img + .category-info {
  padding-top: 24px;
}
.category-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.category-card p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
  flex: 1;
}
.category-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  color: var(--accent);
  font-weight: 500;
  font-size: 0.88rem;
}
.category-card .card-link i { transition: transform var(--transition); font-size: 0.75rem; }
.category-card:hover .card-link i { transform: translateX(4px); }

/* SVG feature icons */
.feature-svg-icon {
  width: 2rem;
  height: 2rem;
  color: var(--accent);
}

/* ===== FEATURES ===== */
.features { background: var(--off-white); }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 24px;
  text-align: center;
  transition: all var(--transition);
  border: 1px solid var(--border);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.feature-card i {
  font-size: 1.8rem;
  color: var(--accent);
  margin-bottom: 20px;
  display: block;
  transition: transform var(--transition);
}
.feature-card:hover i { transform: scale(1.1); }
.feature-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.feature-card p { font-size: 0.85rem; color: var(--text-light); line-height: 1.6; }

/* ===== TRUST ===== */
.trust { background: var(--navy); color: var(--white); }
.trust .section-title { color: var(--white); font-weight: 300; }
.trust .section-subtitle { color: rgba(255,255,255,0.5); }
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.trust-item { text-align: center; }
.trust-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  background: rgba(255,255,255,0.06);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.trust-item:hover .trust-icon {
  background: rgba(255,255,255,0.12);
  transform: translateY(-4px);
}
.trust-icon i { font-size: 1.6rem; color: var(--accent); }
.trust-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.trust-item p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
}

/* ===== WHY US ===== */
.why-us { background: var(--white); }
.why-us-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.why-us-text h2 {
  font-size: 2.2rem;
  font-weight: 300;
  color: var(--navy);
  margin-bottom: 24px;
  text-align: left;
  line-height: 1.2;
  letter-spacing: -0.03em;
}
.why-us-text p {
  margin-bottom: 20px;
  color: var(--text-light);
  line-height: 1.8;
}
.why-us-list { margin-top: 32px; }
.why-us-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
  transition: transform var(--transition-fast);
}
.why-us-list li:hover { transform: translateX(4px); }
.why-us-list li i {
  color: var(--success);
  font-size: 1rem;
  margin-top: 4px;
  flex-shrink: 0;
}
.why-us-list li span { font-weight: 500; color: var(--text); }

.why-us-visual {
  background: var(--light-gray);
  border-radius: var(--radius-lg);
  padding: 48px;
  border: 1px solid var(--border);
}
.why-us-visual h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 28px;
  color: var(--navy);
}
.why-us-visual h3 i { color: var(--accent); margin-right: 8px; }
.service-area-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.service-area-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 450;
}
.service-area-list li i { color: var(--accent); font-size: 0.7rem; }

/* ===== REVIEWS ===== */
.reviews { background: var(--off-white); }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.review-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.review-stars { color: var(--gold); margin-bottom: 20px; font-size: 0.95rem; letter-spacing: 2px; }
.review-card blockquote {
  font-style: normal;
  color: var(--text);
  margin-bottom: 28px;
  line-height: 1.8;
  font-size: 0.95rem;
  font-weight: 400;
}
.review-author { display: flex; align-items: center; gap: 14px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--light-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--navy);
  font-weight: 600;
  font-size: 0.9rem;
}
.review-author-info h4 { font-weight: 600; color: var(--navy); font-size: 0.9rem; }
.review-author-info p { font-size: 0.82rem; color: var(--text-muted); }

/* ===== CONTACT ===== */
.contact { background: var(--white); }
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}
.contact-info {
  background: var(--navy);
  padding: 56px;
  color: var(--white);
}
.contact-info h3 {
  font-size: 1.6rem;
  font-weight: 300;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.contact-info > p { color: rgba(255,255,255,0.55); margin-bottom: 40px; line-height: 1.7; }
.contact-detail {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
  transition: transform var(--transition-fast);
}
.contact-detail:hover { transform: translateX(4px); }
.contact-detail-icon {
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.08);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-detail-icon i { color: var(--accent); font-size: 1rem; }
.contact-detail-text h4 { font-weight: 500; font-size: 0.9rem; }
.contact-detail-text p { font-size: 0.85rem; color: rgba(255,255,255,0.5); }
.contact-detail-text a { color: rgba(255,255,255,0.7); }
.contact-detail-text a:hover { color: var(--white); }
.social-links { display: flex; gap: 10px; margin-top: 40px; }
.social-links a {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  transition: all var(--transition);
}
.social-links a:hover { background: var(--accent); color: var(--white); transform: translateY(-2px); }

.contact-form { padding: 56px; }
.contact-form h3 {
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--navy);
  margin-bottom: 32px;
  letter-spacing: -0.02em;
}
.form-group { margin-bottom: 22px; }
.form-group label {
  display: block;
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 8px;
  letter-spacing: 0.01em;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  background: var(--white);
  color: var(--text);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group textarea { resize: vertical; min-height: 110px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ===== FOOTER ===== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.6);
  padding: 80px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand p {
  margin-top: 20px;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.4);
}
.footer h4 {
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.footer ul li { margin-bottom: 12px; }
.footer ul li a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.45);
  transition: all var(--transition-fast);
}
.footer ul li a:hover { color: var(--white); transform: translateX(2px); display: inline-block; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.3);
}

/* ===== PRODUCT PAGE ===== */
.product-hero {
  position: relative;
  padding: 200px 0 100px;
  background: var(--navy);
  color: var(--white);
  overflow: hidden;
}
.product-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(0deg, var(--white), transparent);
  pointer-events: none;
}
.product-hero h1 {
  font-size: 3.2rem;
  font-weight: 300;
  margin-bottom: 16px;
  letter-spacing: -0.04em;
}
.product-hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.55);
  max-width: 560px;
  line-height: 1.8;
}
.breadcrumb { margin-bottom: 24px; font-size: 0.85rem; }
.breadcrumb a { color: rgba(255,255,255,0.4); }
.breadcrumb a:hover { color: var(--white); }
.breadcrumb span { color: rgba(255,255,255,0.25); margin: 0 10px; }

.product-content { padding: 80px 0; }
.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}
.product-description h2 {
  font-size: 1.8rem;
  font-weight: 300;
  color: var(--navy);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.product-description p {
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.8;
}

.product-options { margin-top: 40px; }
.product-options h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.option-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 36px;
}
.option-card {
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 24px 18px;
  text-align: center;
  border: 1.5px solid var(--border);
  transition: all var(--transition);
}
.option-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.option-card i { font-size: 1.3rem; color: var(--accent); margin-bottom: 10px; display: block; }
.option-card h4 { font-size: 0.9rem; font-weight: 600; color: var(--navy); }
.option-card p { font-size: 0.78rem; color: var(--text-light); margin-top: 4px; line-height: 1.5; }

.color-families { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.color-chip {
  padding: 8px 18px;
  background: var(--light-gray);
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
}
.color-chip:hover { background: var(--white); border-color: var(--accent); color: var(--accent); }

.product-cta-box {
  background: var(--navy);
  border-radius: var(--radius);
  padding: 48px;
  color: var(--white);
  text-align: center;
  margin-top: 48px;
}
.product-cta-box h3 {
  font-size: 1.4rem;
  font-weight: 300;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.product-cta-box p { color: rgba(255,255,255,0.5); margin-bottom: 28px; }

.product-features-section { background: var(--off-white); padding: 100px 0; }
.product-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.product-feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.product-feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.product-feature-card i {
  font-size: 1.6rem;
  color: var(--accent);
  margin-bottom: 16px;
  display: block;
  transition: transform var(--transition);
}
.product-feature-card:hover i { transform: scale(1.1); }
.product-feature-card h4 {
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 8px;
  font-size: 0.95rem;
}
.product-feature-card p { font-size: 0.88rem; color: var(--text-light); line-height: 1.6; }

/* ===== SCROLL ANIMATIONS ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
  will-change: opacity, transform;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* Legacy fade-up class support */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
  will-change: opacity, transform;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children inside grids */
.stagger-children > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.stagger-children.visible > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.15s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.25s; }
.stagger-children.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .section { padding: 80px 0; }
  .section-title { font-size: 2rem; }
  .hero h1 { font-size: 3rem; }
  .category-grid, .feature-grid { grid-template-columns: repeat(3, 1fr); }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .product-grid { grid-template-columns: 1fr; gap: 48px; }
  .why-us-content { gap: 48px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-title { font-size: 1.7rem; }
  .section-subtitle { font-size: 1rem; margin-bottom: 40px; }
  .header-top { display: none; }
  .nav-links { display: none; }
  .menu-toggle { display: block; }
  .hero { min-height: 85vh; }
  .hero h1 { font-size: 2.4rem; }
  .hero p { font-size: 1.05rem; }
  .hero-stats { flex-direction: column; gap: 20px; margin-top: 48px; }
  .category-grid { grid-template-columns: 1fr 1fr; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .trust-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .why-us-content { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .contact-wrapper { grid-template-columns: 1fr; }
  .contact-info { padding: 40px; }
  .contact-form { padding: 40px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .product-hero { padding: 140px 0 60px; }
  .product-hero h1 { font-size: 2.2rem; }
  .option-grid { grid-template-columns: 1fr 1fr; }
  .product-features-grid { grid-template-columns: 1fr; }
  .service-area-list { grid-template-columns: 1fr; }
  .why-us-visual { padding: 32px; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.9rem; }
  .category-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .hero-btns .btn { width: 100%; justify-content: center; }
  .option-grid { grid-template-columns: 1fr; }
  .contact-info { padding: 32px; }
  .contact-form { padding: 32px; }
}