/* ===== Valeureux — Swiss Minimalist Design System ===== */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Noto+Sans+SC:wght@300;400;500;700&family=Inter:wght@300;400;500;600&display=swap');

:root {
  /* Color palette */
  --cream: #FAF8F5;
  --warm-white: #FDFCF9;
  --charcoal: #2C2C2C;
  --dark: #1A1A1A;
  --olive: #7A8B6F;
  --olive-light: #9AAD8E;
  --olive-dark: #5C6B54;
  --amber: #C4A67A;
  --amber-light: #D9C49E;
  --stone: #E8E4DF;
  --stone-light: #F2EFEC;
  --sage: #B8C5B0;
  --text-primary: #2C2C2C;
  --text-secondary: #6B6B6B;
  --text-muted: #9E9E9E;
  --border: #E5E0DA;
  --border-light: #F0EDE8;

  /* Typography */
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body-cn: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-body-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --spacing-2xl: 8rem;
  --spacing-3xl: 12rem;

  /* Max width */
  --content-max: 1280px;
  --content-narrow: 860px;
  --content-wide: 1440px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.35s ease;
  --transition-slow: 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--warm-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ===== Language Toggle ===== */
html[lang="zh"] .en-text { display: none; }
html[lang="en"] .zh-text { display: none; }

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(253, 252, 249, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-base);
}
.navbar.scrolled { box-shadow: var(--shadow-sm); }
.navbar-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem var(--spacing-md);
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--charcoal);
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
}
.nav-logo:hover { color: var(--olive); }
.nav-logo .logo-sub {
  display: block;
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: -2px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.25rem 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--charcoal);
  transition: width var(--transition-base);
}
.nav-links a:hover { color: var(--charcoal); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--charcoal); }
.nav-links a.active::after { width: 100%; }
.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: 1rem;
  padding-left: 1rem;
  border-left: 1px solid var(--border);
}
.lang-switch button {
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 0.2rem 0.4rem;
  transition: color var(--transition-fast);
}
.lang-switch button:hover,
.lang-switch button.active { color: var(--charcoal); font-weight: 500; }
.lang-switch span { color: var(--border); }
.mobile-menu-btn { display: none; }

/* ===== Mobile Nav ===== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--warm-white);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem var(--spacing-md);
    gap: 1rem;
  }
  .mobile-menu-btn {
    display: block;
    width: 24px;
    height: 18px;
    position: relative;
  }
  .mobile-menu-btn span {
    display: block;
    position: absolute;
    height: 1.5px;
    width: 100%;
    background: var(--charcoal);
    transition: all var(--transition-base);
  }
  .mobile-menu-btn span:nth-child(1) { top: 0; }
  .mobile-menu-btn span:nth-child(2) { top: 50%; transform: translateY(-50%); }
  .mobile-menu-btn span:nth-child(3) { bottom: 0; }
  .lang-switch { margin-left: 0; padding-left: 0; border-left: none; }
}

/* ===== Page Header ===== */
.page-header {
  padding: 8rem var(--spacing-md) var(--spacing-lg);
  text-align: center;
  background: var(--cream);
}
.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 500;
  color: var(--charcoal);
  margin-bottom: var(--spacing-sm);
}
.page-header p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ===== Section Common ===== */
.section {
  padding: var(--spacing-2xl) var(--spacing-md);
}
.section-cream { background: var(--cream); }
.section-white { background: var(--warm-white); }
.section-dark { background: var(--charcoal); color: var(--warm-white); }
.section-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--olive);
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 500;
  color: var(--charcoal);
  line-height: 1.3;
}
.section-dark .section-title { color: var(--warm-white); }
.section-title.centered { text-align: center; }
.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
  max-width: 640px;
  line-height: 1.7;
}
.section-subtitle.centered {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}
.section-header-group {
  margin-bottom: var(--spacing-lg);
}
.section-header-group.centered {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background: var(--cream);
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(250,248,245,0.3), rgba(250,248,245,0.85));
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: var(--spacing-md);
  margin-top: 2rem;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 600;
  color: var(--charcoal);
  line-height: 1.25;
  margin-bottom: var(--spacing-sm);
}
.hero p {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}
.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.85rem 2.2rem;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: 0;
  transition: all var(--transition-base);
  cursor: pointer;
}
.btn-primary {
  background: var(--charcoal);
  color: var(--warm-white);
}
.btn-primary:hover {
  background: var(--olive);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-outline {
  background: transparent;
  color: var(--charcoal);
  border: 1px solid var(--charcoal);
}
.btn-outline:hover {
  background: var(--charcoal);
  color: var(--warm-white);
}
.btn-outline-light {
  background: transparent;
  color: var(--warm-white);
  border: 1px solid rgba(255,255,255,0.5);
}
.btn-outline-light:hover {
  background: var(--warm-white);
  color: var(--charcoal);
}
.btn-sm {
  padding: 0.55rem 1.4rem;
  font-size: 0.8rem;
}

/* ===== Content Containers ===== */
.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}
.container-narrow {
  max-width: var(--content-narrow);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}
.container-wide {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ===== Grid ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-md); }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--spacing-md); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
}

/* ===== Intro / Brand Snapshot ===== */
.intro-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}
.intro-image img {
  width: 100%;
  height: 500px;
  object-fit: cover;
}
.intro-text p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: var(--spacing-sm);
}
@media (max-width: 768px) {
  .intro-block { grid-template-columns: 1fr; gap: var(--spacing-md); }
  .intro-image img { height: 320px; }
}

/* ===== Product Cards ===== */
.product-card {
  background: var(--warm-white);
  border: 1px solid var(--border-light);
  transition: all var(--transition-base);
  text-align: center;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.product-card-image {
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--cream);
}
.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.product-card:hover .product-card-image img { transform: scale(1.05); }
.product-card-body { padding: 1.5rem; }
.product-card-body h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.product-card-body p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Advantage Cards ===== */
.advantage-card {
  background: var(--warm-white);
  padding: var(--spacing-md);
  border: 1px solid var(--border-light);
  transition: all var(--transition-base);
}
.advantage-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.advantage-card .adv-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--olive);
  color: var(--warm-white);
  border-radius: 50%;
  margin-bottom: var(--spacing-sm);
  font-size: 1.2rem;
  font-weight: 600;
}
.advantage-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.advantage-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Stats Bar ===== */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  padding: var(--spacing-lg) var(--spacing-md);
  background: var(--charcoal);
  color: var(--warm-white);
  text-align: center;
  flex-wrap: wrap;
}
.stat-item .stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}
.stat-item .stat-label {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ===== Full-width Image Banner ===== */
.image-banner {
  width: 100%;
  height: 60vh;
  min-height: 400px;
  overflow: hidden;
  position: relative;
}
.image-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.image-banner-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.25);
}
.image-banner-overlay h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  color: #fff;
  font-weight: 500;
}

/* ===== Split Content ===== */
.split-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 500px;
}
.split-image { overflow: hidden; }
.split-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.split-text {
  display: flex;
  align-items: center;
  padding: var(--spacing-xl);
  background: var(--cream);
}
.split-text-inner { max-width: 520px; }
.split-text-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}
.split-text-inner p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}
@media (max-width: 768px) {
  .split-block { grid-template-columns: 1fr; min-height: auto; }
  .split-image { height: 300px; }
}

/* ===== Scenario Grid ===== */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-sm);
}
.scenario-item {
  text-align: center;
  padding: var(--spacing-sm);
  transition: transform var(--transition-base);
}
.scenario-item:hover { transform: translateY(-3px); }
.scenario-item .scenario-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-xs);
  border-radius: 50%;
  overflow: hidden;
  background: var(--stone-light);
}
.scenario-item .scenario-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.scenario-item h4 {
  font-size: 0.9rem;
  font-weight: 500;
}
.scenario-item p {
  font-size: 0.8rem;
  color: var(--text-muted);
}
@media (max-width: 768px) {
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== Feature List ===== */
.feature-list {
  display: grid;
  gap: var(--spacing-sm);
}
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  border-bottom: 1px solid var(--border-light);
}
.feature-check {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--olive);
  color: #fff;
  border-radius: 50%;
  font-size: 0.75rem;
  margin-top: 2px;
}
.feature-text h4 { font-size: 0.95rem; font-weight: 500; margin-bottom: 0.2rem; }
.feature-text p { font-size: 0.85rem; color: var(--text-secondary); }

/* ===== Contact Form ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}
.contact-info h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: var(--spacing-sm);
}
.contact-info .info-row {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
  font-size: 0.95rem;
  color: var(--text-secondary);
}
.contact-info .info-row .info-icon {
  flex-shrink: 0;
  width: 20px;
  text-align: center;
  color: var(--olive);
}
.form-group { margin-bottom: var(--spacing-sm); }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  background: var(--warm-white);
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--charcoal); }
.form-group textarea { resize: vertical; min-height: 120px; }
@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ===== News Cards ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}
.news-card {
  background: var(--warm-white);
  border: 1px solid var(--border-light);
  transition: all var(--transition-base);
}
.news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.news-card-image {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--stone);
}
.news-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-card-body { padding: 1.5rem; }
.news-card-body .news-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.news-card-body h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}
.news-card-body p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
@media (max-width: 1024px) {
  .news-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .news-grid { grid-template-columns: 1fr; }
}

/* ===== Cooperation Cards ===== */
.coop-card {
  background: var(--warm-white);
  padding: var(--spacing-md);
  border: 1px solid var(--border-light);
  transition: all var(--transition-base);
}
.coop-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.coop-card .coop-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--olive);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 0.5rem;
}
.coop-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}
.coop-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Process Flow ===== */
.process-flow {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}
.process-step {
  text-align: center;
  flex: 0 0 140px;
}
.process-step .step-circle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--olive);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 auto var(--spacing-xs);
}
.process-step .step-label {
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.2rem;
}
.process-step .step-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.process-arrow {
  display: flex;
  align-items: center;
  color: var(--border);
  font-size: 1.2rem;
}

/* ===== CTA Section ===== */
.cta-section {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md);
  background: var(--cream);
}
.cta-section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}
.cta-section p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto var(--spacing-md);
}
.cta-dark {
  background: var(--charcoal);
  color: var(--warm-white);
}
.cta-dark p { color: rgba(255,255,255,0.7); }

/* ===== Footer ===== */
.footer {
  background: var(--charcoal);
  color: rgba(255,255,255,0.7);
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-lg);
  max-width: var(--content-max);
  margin: 0 auto;
}
.footer-col h4 {
  color: var(--warm-white);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}
.footer-col p, .footer-col a {
  font-size: 0.85rem;
  line-height: 2;
  color: rgba(255,255,255,0.55);
  display: block;
  transition: color var(--transition-fast);
}
.footer-col a:hover { color: var(--warm-white); }
.footer-bottom {
  max-width: var(--content-max);
  margin: var(--spacing-lg) auto 0;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Page-specific styles ===== */

/* Products detail tab */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--border-light);
}
.product-detail:last-child { border-bottom: none; }
.product-detail-image img {
  width: 100%;
  border-radius: 2px;
}
.product-detail-text h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}
.product-detail-text .pd-tagline {
  font-size: 1rem;
  color: var(--olive);
  font-style: italic;
  margin-bottom: var(--spacing-sm);
}
.product-detail-text p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
}
.product-detail-text .pd-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--spacing-sm);
}
.pd-feature-tag {
  font-size: 0.78rem;
  padding: 0.35rem 0.9rem;
  background: var(--stone-light);
  color: var(--text-secondary);
}
@media (max-width: 768px) {
  .product-detail { grid-template-columns: 1fr; }
}

/* ===== Certification Grid ===== */
.cert-grid {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
  padding: var(--spacing-md) 0;
}
.cert-item {
  text-align: center;
  padding: var(--spacing-sm);
}
.cert-item .cert-badge {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-xs);
  border-radius: 50%;
  background: var(--olive);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  text-align: center;
  line-height: 1.3;
  font-weight: 500;
}
.cert-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ===== Table styles ===== */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: var(--spacing-md) 0;
}
.data-table th, .data-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}
.data-table th {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.data-table tr:hover { background: rgba(0,0,0,0.01); }

/* ===== Divider ===== */
.divider {
  width: 40px;
  height: 2px;
  background: var(--olive);
  margin: var(--spacing-sm) 0;
}
.divider.centered { margin-left: auto; margin-right: auto; }

/* ===== Utility ===== */
.text-center { text-align: center; }
.text-muted { color: var(--text-secondary); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* ===== Lightbox ===== */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.92);
  cursor: pointer;
}
.lightbox.open { display: flex; align-items: center; justify-content: center; }
.lightbox img {
  max-width: 92vw;
  max-height: 92vh;
  object-fit: contain;
  cursor: default;
}
.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 40px;
  height: 40px;
  color: #fff;
  font-size: 1.5rem;
  line-height: 40px;
  text-align: center;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}
.lightbox-close:hover { opacity: 1; }

/* Clickable images */
img[data-lightbox] {
  cursor: zoom-in;
  transition: opacity var(--transition-fast);
}
img[data-lightbox]:hover { opacity: 0.92; }