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

:root {
  --blue: #005461;
  --blue-dark: #003d47;
  --blue-light: #e0f2f5;
  --green: #007a6e;
  --text: #1a2e33;
  --text-light: #5a7a80;
  --bg: #f4fafb;
  --white: #ffffff;
  --border: #d0e8ec;
  --shadow: 0 1px 3px rgba(0,60,70,.08), 0 1px 2px rgba(0,60,70,.05);
  --shadow-md: 0 4px 6px -1px rgba(0,60,70,.1), 0 2px 4px -1px rgba(0,60,70,.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,60,70,.12), 0 4px 6px -2px rgba(0,60,70,.06);
  --radius: 8px;
  --radius-lg: 12px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --accent: #e8a020;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== LAYOUT ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== HEADER ===== */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  max-width: 1200px;
  margin: 0 auto;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.logo img {
  height: 40px;
  width: auto;
  display: block;
}

.main-nav { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }

.main-nav a {
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background .15s, color .15s;
  white-space: nowrap;
}

.main-nav a:hover, .main-nav a.active {
  background: var(--blue-light);
  color: var(--blue);
}

/* Dropdown nav */
.nav-has-dropdown { position: relative; display: flex; align-items: center; }
.nav-has-dropdown > a { display: flex; align-items: center; gap: 4px; }
.nav-has-dropdown > a::after { content: ''; display: inline-block; width: 0; height: 0; border-left: 4px solid transparent; border-right: 4px solid transparent; border-top: 5px solid currentColor; opacity: .55; flex-shrink: 0; }
.nav-dropdown { display: none; position: absolute; top: calc(100% + 6px); left: 0; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); min-width: 230px; z-index: 200; padding: 6px 0; }
.nav-has-dropdown:hover .nav-dropdown,
.nav-has-dropdown:focus-within .nav-dropdown { display: block; }
.nav-dropdown a { display: block; padding: 9px 16px; font-size: 14px; font-weight: 500; color: var(--text); text-decoration: none; white-space: nowrap; border-radius: 0; background: none; }
.nav-dropdown a:hover { background: var(--bg); color: var(--blue); }
.nav-dropdown a.dropdown-header { font-weight: 700; color: var(--blue); border-bottom: 1px solid var(--border); padding-bottom: 10px; margin-bottom: 2px; font-size: 13px; text-transform: uppercase; letter-spacing: .3px; }
.nav-dropdown a.dropdown-header:hover { background: var(--blue-light); }

.header-cta {
  background: var(--blue);
  color: white !important;
  padding: 8px 18px !important;
  border-radius: var(--radius) !important;
  font-weight: 600 !important;
  white-space: nowrap;
}
.header-cta:hover { background: var(--blue-dark) !important; color: white !important; text-decoration: none !important; }

.nav-phone {
  font-size: 14px;
  font-weight: 600;
  color: var(--text) !important;
}
.nav-phone span { color: var(--blue); }

/* ===== BREADCRUMB ===== */
.breadcrumb {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
  font-size: 13px;
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.breadcrumb li { display: flex; align-items: center; gap: 6px; }
.breadcrumb li:not(:last-child)::after { content: '/'; color: var(--text-light); }
.breadcrumb a { color: var(--text-light); }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb li:last-child { color: var(--text); font-weight: 500; }

/* ===== HERO / CATEGORY HEADER ===== */
.category-hero {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue) 100%);
  color: white;
  padding: 60px 20px 50px;
  text-align: center;
}

.category-hero h1 {
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.category-hero .lead {
  font-size: clamp(15px, 2vw, 18px);
  opacity: .9;
  max-width: 680px;
  margin: 0 auto 28px;
}

.hero-badges {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 24px;
}

.hero-badge {
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
}

/* ===== TRUST BAR ===== */
.trust-bar {
  background: var(--green);
  color: white;
  padding: 12px 0;
}

.trust-items {
  display: flex;
  gap: 32px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 0 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
}

.trust-item::before { font-size: 16px; }
.trust-item.delivery::before { content: '🚚'; }
.trust-item.quote::before { content: '📋'; }
.trust-item.cert::before { content: '✅'; }
.trust-item.support::before { content: '📞'; }

/* ===== SECTION ===== */
.section { padding: 60px 0; }
.section-alt { background: var(--bg); }

.section-title {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

.section-subtitle {
  color: var(--text-light);
  font-size: 16px;
  margin-bottom: 40px;
}

/* ===== PRODUCT GRID ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow .2s, transform .2s;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.product-card-image {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg);
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s;
}

.product-card:hover .product-card-image img { transform: scale(1.04); }

.product-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-sku {
  font-size: 11px;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.product-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.3;
}

.product-card-excerpt {
  font-size: 13px;
  color: var(--text-light);
  flex: 1;
  margin-bottom: 16px;
  line-height: 1.5;
}

.product-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tag {
  background: var(--blue-light);
  color: var(--blue);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
}

.tag-green { background: #d1fae5; color: #065f46; }

.product-card-price {
  font-size: 18px;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 12px;
}

.product-card-price .from { font-size: 12px; font-weight: 400; color: var(--text-light); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background .15s, box-shadow .15s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--blue);
  color: white;
}
.btn-primary:hover { background: var(--blue-dark); color: white; text-decoration: none; }

.btn-outline {
  background: transparent;
  color: var(--blue);
  border: 2px solid var(--blue);
}
.btn-outline:hover { background: var(--blue); color: white; text-decoration: none; }

.btn-green { background: var(--green); color: white; }
.btn-green:hover { background: #047857; color: white; text-decoration: none; }

.btn-block { width: 100%; }
.btn-lg { padding: 14px 28px; font-size: 16px; }

/* ===== DESCRIPTION COURTE ===== */
.intro-box {
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin: 40px 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
}

/* ===== COMPARISON TABLE ===== */
.table-responsive { overflow-x: auto; }

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.compare-table th {
  background: var(--blue);
  color: white;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}

.compare-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.compare-table tr:nth-child(even) td { background: var(--bg); }
.compare-table tr:hover td { background: var(--blue-light); }

.compare-table td a {
  font-weight: 600;
}

/* ===== GUIDE SECTIONS ===== */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.guide-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.guide-card-icon {
  font-size: 32px;
  margin-bottom: 16px;
}

.guide-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.guide-card ul {
  list-style: none;
  padding: 0;
}

.guide-card ul li {
  padding: 6px 0;
  font-size: 14px;
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border);
}

.guide-card ul li:last-child { border-bottom: none; }

.guide-card ul li::before {
  content: '→';
  color: var(--blue);
  flex-shrink: 0;
  font-weight: 700;
}

/* ===== CERTIF SECTION ===== */
.certif-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.certif-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.certif-icon {
  background: var(--blue-light);
  color: var(--blue);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.certif-item h4 { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.certif-item p { font-size: 13px; color: var(--text-light); }

/* ===== FAQ ===== */
.faq-list { margin-top: 24px; }

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 8px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 24px;
  background: var(--white);
  border: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: background .15s;
}

.faq-question:hover { background: var(--bg); }
.faq-question.open { background: var(--blue-light); color: var(--blue); }

.faq-chevron {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform .2s;
}
.faq-question.open .faq-chevron { transform: rotate(180deg); }

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease, padding .3s ease;
}

.faq-answer.open {
  padding: 16px 24px 24px;
  max-height: 400px;
}

.faq-answer p { font-size: 15px; line-height: 1.7; color: var(--text); }

/* ===== CTA BOX ===== */
.cta-box {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue) 100%);
  color: white;
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  text-align: center;
  margin: 60px 0;
}

.cta-box h2 {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  margin-bottom: 12px;
}

.cta-box p { font-size: 16px; opacity: .9; margin-bottom: 28px; }

.cta-items {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.cta-item {
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.3);
  border-radius: var(--radius);
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
}

.cta-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.btn-white {
  background: white;
  color: var(--blue);
}
.btn-white:hover { background: #f0f4ff; color: var(--blue-dark); text-decoration: none; }

.btn-outline-white {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,.6);
}
.btn-outline-white:hover { background: rgba(255,255,255,.1); color: white; text-decoration: none; }

/* ===== PRODUCT DETAIL PAGE ===== */
.product-detail {
  padding: 48px 0;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 768px) {
  .product-detail-grid { grid-template-columns: 1fr; }
}

/* Gallery */
.product-gallery { position: sticky; top: 80px; }

.gallery-main {
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg);
  margin-bottom: 12px;
}

.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: zoom-in;
}

.gallery-thumbs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.gallery-thumb {
  width: 72px;
  height: 72px;
  border-radius: var(--radius);
  border: 2px solid var(--border);
  overflow: hidden;
  cursor: pointer;
  transition: border-color .15s;
  background: var(--bg);
}

.gallery-thumb:hover, .gallery-thumb.active {
  border-color: var(--blue);
}

.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Product Info */
.product-info {}

.product-category-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--blue);
  font-weight: 600;
  margin-bottom: 8px;
}

.product-title {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.product-sku-detail {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 16px;
}

.product-short-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.product-certifs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.certif-badge {
  background: #d1fae5;
  color: #065f46;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid #6ee7b7;
}

.product-price-block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.product-price-label { font-size: 13px; color: var(--text-light); margin-bottom: 4px; }
.product-price-amount { font-size: 28px; font-weight: 800; color: var(--blue); }
.product-price-note { font-size: 12px; color: var(--text-light); margin-top: 4px; }

.product-cta-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.product-features {
  list-style: none;
  padding: 0;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

.product-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}

.product-features li:last-child { border-bottom: none; }

.feature-check {
  color: var(--green);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* Product Tabs */
.product-tabs-section {
  margin-top: 60px;
  border-top: 1px solid var(--border);
  padding-top: 40px;
}

.tabs-nav {
  display: flex;
  border-bottom: 2px solid var(--border);
  gap: 0;
  overflow-x: auto;
}

.tab-btn {
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-light);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  white-space: nowrap;
  transition: color .15s, border-color .15s;
}

.tab-btn:hover { color: var(--blue); }
.tab-btn.active { color: var(--blue); border-bottom-color: var(--blue); }

.tab-content { padding-top: 32px; display: none; }
.tab-content.active { display: block; }

.tab-content h2, .tab-content h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  margin-top: 24px;
  color: var(--text);
}

.tab-content h2:first-child, .tab-content h3:first-child { margin-top: 0; }

.tab-content p {
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.tab-content ul, .tab-content ol {
  padding-left: 20px;
  margin-bottom: 16px;
}

.tab-content ul li, .tab-content ol li {
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 6px;
}

.tab-content strong { font-weight: 700; }

/* Specs table */
.specs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.specs-table tr:nth-child(odd) td:first-child {
  background: var(--bg);
  font-weight: 600;
  width: 40%;
}

.specs-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
}

/* ===== RELATED PRODUCTS ===== */
.related-section {
  background: var(--bg);
  padding: 60px 0;
}

/* ===== REASSURANCE B2B ===== */
.reassurance {
  background: var(--white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 52px 20px;
}

.reassurance-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.reassurance-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.reassurance-icon {
  width: 52px;
  height: 52px;
  background: var(--blue-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--blue);
}

.reassurance-icon svg {
  width: 26px;
  height: 26px;
  stroke: var(--blue);
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.reassurance-item h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  margin: 0;
}

.reassurance-item p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.65;
  margin: 0;
}

@media (max-width: 900px) {
  .reassurance-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
}
@media (max-width: 500px) {
  .reassurance-grid { grid-template-columns: 1fr; gap: 24px; }
}

/* ===== FOOTER ===== */
.site-footer {
  background: #111827;
  color: #d1d5db;
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
}

.footer-brand .logo-mark { display: inline-block; margin-bottom: 12px; font-size: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 280px; }

.footer-col h4 {
  color: white;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: #9ca3af; font-size: 14px; text-decoration: none; }
.footer-col ul li a:hover { color: white; }

.footer-bottom {
  margin-top: 48px;
  border-top: 1px solid #374151;
  padding: 20px;
  max-width: 1200px;
  margin: 48px auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
}

/* ===== REMBOURSEMENT PAGE ===== */
.info-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  margin: 24px 0;
}

.info-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.info-card-icon { font-size: 28px; margin-bottom: 12px; }
.info-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.info-card p { font-size: 14px; color: var(--text-light); }

/* ===== HOMEPAGE ===== */
.hero-home {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1d4ed8 100%);
  color: white;
  padding: 80px 20px;
  text-align: center;
}

.hero-home h1 {
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero-home .subtitle {
  font-size: clamp(16px, 2.5vw, 20px);
  opacity: .85;
  max-width: 700px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.hero-home .btn-group {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.categories-section { padding: 80px 0; }

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.category-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  transition: box-shadow .2s, transform .2s, border-color .2s;
  display: block;
}

.category-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: var(--blue);
  text-decoration: none;
}

.category-card-icon { font-size: 40px; margin-bottom: 16px; }
.category-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.category-card p { font-size: 13px; color: var(--text-light); }

.stats-section {
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: white;
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

@media (max-width: 640px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

.stat-number {
  font-size: 40px;
  font-weight: 900;
  display: block;
  letter-spacing: -1px;
}

.stat-label { font-size: 13px; opacity: .85; }

/* ===== PLACEHOLDER IMAGE ===== */
.img-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #e8f0fe, #c7d7f5);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #6b7280;
  font-size: 13px;
}

.img-placeholder-icon { font-size: 32px; opacity: .5; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header-inner { flex-wrap: wrap; }
  .main-nav { display: none; }
  .section { padding: 40px 0; }
  .category-hero { padding: 40px 20px; }
  .product-detail { padding: 28px 0; }
  .cta-box { padding: 32px 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .product-detail-grid { gap: 28px; }
}

@media (max-width: 480px) {
  .product-grid { grid-template-columns: 1fr; }
  .guide-grid { grid-template-columns: 1fr; }
  .certif-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}