/* ============================================
   Yohu Home — Premium Lifestyle Brand
   Clean white + sage green palette
   ============================================ */

/* --- CSS Variables --- */
:root {
  /* White & gray-green palette */
  --color-bg: #F9FAF8;
  --color-surface: #FFFFFF;
  --color-bg-alt: #F3F4F1;
  --color-bg-warm: #EEF0EC;

  /* Accent — sage green */
  --color-accent: #9CAF88;
  --color-accent-light: #BCC9AC;
  --color-accent-dark: #7D8F73;
  --color-accent-pale: #E8EDE4;

  /* Text */
  --color-text: #3A3D38;
  --color-text-dark: #1F211E;
  --color-text-muted: #6B6D67;
  --color-text-light: #9A9C96;

  /* Borders */
  --color-border: #E6E8E3;
  --color-border-light: #EFF0EC;

  /* Legacy aliases for compatibility */
  --color-cream: var(--color-bg);
  --color-warm-white: var(--color-surface);
  --color-ivory: var(--color-bg-alt);
  --color-sand: var(--color-bg-warm);
  --color-taupe: var(--color-text-light);
  --color-warm-gray: var(--color-text-muted);
  --color-charcoal: var(--color-text);
  --color-espresso: var(--color-text-dark);
  --color-off-black: #111210;
  --color-gold: var(--color-accent);
  --color-gold-light: var(--color-accent-light);
  --color-gold-dark: var(--color-accent-dark);
  --color-bronze: var(--color-accent-dark);
  --color-sage: var(--color-accent);
  --color-sage-dark: var(--color-accent-dark);

  /* Typography */
  --font-display: 'Georgia', 'Times New Roman', serif;
  --font-body: 'Helvetica Neue', 'Arial', 'Helvetica', sans-serif;
  --font-mono: 'SF Mono', 'Consolas', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  /* Layout */
  --max-width: 1280px;
  --nav-height: 80px;
  --banner-height-home: 420px;
  --banner-height-page: 280px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(58, 61, 56, 0.04);
  --shadow-md: 0 4px 16px rgba(58, 61, 56, 0.06);
  --shadow-lg: 0 12px 40px rgba(58, 61, 56, 0.08);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  letter-spacing: 0.01em;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.25;
  color: var(--color-text-dark);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.125rem; }

.section-title {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-title .overline {
  display: block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-accent-dark);
  margin-bottom: var(--space-sm);
}

.section-title .subtitle {
  display: block;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
  font-weight: 300;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition-base);
}

.nav.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--color-text-dark);
  letter-spacing: 0.05em;
}

.nav-logo span {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: var(--space-xs) 0;
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text-dark);
  border-bottom-color: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-text-dark);
  transition: transform var(--transition-base);
}

/* --- Banner --- */
.banner {
  padding-top: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(180deg, #F9FAF8 0%, #F0F2ED 50%, #E8ECE4 100%);
  position: relative;
  overflow: hidden;
}

.banner::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -5%;
  width: 40%;
  height: 160%;
  background: radial-gradient(ellipse at center, rgba(156, 175, 136, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.banner-home {
  min-height: var(--banner-height-home);
}

.banner-page {
  min-height: var(--banner-height-page);
}

.banner-content {
  max-width: 720px;
  padding: var(--space-xl) var(--space-lg);
  position: relative;
  z-index: 1;
}

.banner-content .overline {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-accent-dark);
  margin-bottom: var(--space-md);
  display: block;
}

.banner-content h1 {
  margin-bottom: var(--space-md);
}

.banner-content p {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  font-weight: 300;
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.banner-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
}

/* --- Footer --- */
.footer {
  background: var(--color-text-dark);
  color: var(--color-text-light);
  padding: var(--space-3xl) var(--space-lg) var(--space-xl);
}

.footer-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
}

.footer-brand h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-bg);
  margin-bottom: var(--space-md);
}

.footer-brand h3 span {
  color: var(--color-accent);
}

.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.8;
  max-width: 320px;
}

.footer-col h4 {
  font-family: var(--font-body);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-bg);
  margin-bottom: var(--space-lg);
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: var(--space-2xl) auto 0;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition: all var(--transition-base);
}

.btn-primary {
  background: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
}

.btn-outline {
  background: transparent;
  color: var(--color-text-dark);
  border-color: var(--color-border);
}

.btn-outline:hover {
  background: var(--color-text-dark);
  color: #FFFFFF;
  border-color: var(--color-text-dark);
}

.btn-outline-light {
  background: transparent;
  color: var(--color-bg);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-outline-light:hover {
  background: var(--color-bg);
  color: var(--color-text-dark);
  border-color: var(--color-bg);
}

.btn-link {
  padding: 0;
  border-bottom: 1px solid var(--color-accent);
  color: var(--color-text-dark);
}

.btn-link:hover {
  color: var(--color-accent);
}

/* --- Page Header (kept for compatibility) --- */
.page-header {
  padding: calc(var(--nav-height) + var(--space-3xl)) var(--space-lg) var(--space-xl);
  background: linear-gradient(180deg, var(--color-bg), var(--color-bg-alt));
  text-align: center;
}

.page-header .overline {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-accent-dark);
  margin-bottom: var(--space-md);
}

.page-header h1 {
  margin-bottom: var(--space-md);
}

.page-header p {
  max-width: 600px;
  margin: 0 auto;
  color: var(--color-text-muted);
  font-size: 1.125rem;
  font-weight: 300;
}

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* --- Section --- */
.section {
  padding: var(--space-3xl) var(--space-lg);
}

.section-light {
  background: var(--color-bg-alt);
}

.section-dark {
  background: var(--color-text-dark);
  color: var(--color-bg);
}

.section-dark .section-title h2 {
  color: var(--color-bg);
}

.section-dark .section-title .subtitle {
  color: var(--color-text-light);
}

/* --- Category Cards --- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.category-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  padding: var(--space-xl);
  text-align: center;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.category-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.category-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-pale);
  border-radius: 50%;
  font-size: 1.5rem;
}

.category-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
}

.category-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- Value Props --- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.value-card {
  text-align: center;
  padding: var(--space-xl);
}

.value-card .value-icon {
  font-size: 2rem;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
}

.value-card h3 {
  margin-bottom: var(--space-md);
}

.value-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --- Product Grid --- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.product-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.product-image {
  aspect-ratio: 1;
  background: var(--color-bg-alt);
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-image img {
  transform: scale(1.05);
}

.product-info {
  padding: var(--space-lg);
}

.product-category {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent-dark);
  margin-bottom: var(--space-xs);
}

.product-info h3 {
  font-size: 1.0625rem;
  margin-bottom: var(--space-sm);
}

.product-info p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- Products Page Layout --- */
.products-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-xl);
  padding: var(--space-3xl) var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
}

.products-sidebar {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-lg));
  align-self: start;
}

.sidebar-title {
  font-family: var(--font-body);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.category-nav a {
  display: block;
  padding: 0.625rem 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border-light);
  transition: color var(--transition-fast);
}

.category-nav a:hover,
.category-nav a.active {
  color: var(--color-text-dark);
}

/* --- Category Section (Products Page) --- */
.category-section {
  margin-bottom: var(--space-3xl);
}

.category-section:last-child {
  margin-bottom: 0;
}

.category-section-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-text-dark);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

/* --- Serve Cards --- */
.serve-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.serve-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

.serve-card:hover {
  box-shadow: var(--shadow-sm);
}

.serve-image {
  aspect-ratio: 16/10;
  background: var(--color-bg-alt);
  overflow: hidden;
}

.serve-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.serve-body {
  padding: var(--space-xl);
}

.serve-body h3 {
  margin-bottom: var(--space-md);
}

.serve-body p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --- Process Steps --- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.process-step {
  text-align: center;
  padding: var(--space-xl);
  position: relative;
}

.process-step .step-number {
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--color-accent);
  opacity: 0.3;
  margin-bottom: var(--space-md);
}

.process-step h3 {
  margin-bottom: var(--space-md);
}

.process-step p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --- Feature List --- */
.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.feature-item {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
}

.feature-item .feature-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-pale);
  border-radius: 50%;
  font-size: 1.25rem;
  color: var(--color-accent);
}

.feature-text h3 {
  font-size: 1.0625rem;
  margin-bottom: var(--space-sm);
}

.feature-text p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- Resource Cards --- */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.resource-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

.resource-card:hover {
  box-shadow: var(--shadow-sm);
}

.resource-image {
  aspect-ratio: 16/9;
  background: var(--color-bg-alt);
}

.resource-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.resource-body {
  padding: var(--space-xl);
}

.resource-tag {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent-dark);
  margin-bottom: var(--space-sm);
}

.resource-body h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-md);
}

.resource-body p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- FAQ --- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
}

.faq-question {
  font-family: var(--font-display);
  font-size: 1.125rem;
  color: var(--color-text-dark);
  cursor: pointer;
  width: 100%;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--color-accent);
  font-weight: 300;
}

.faq-question.open::after {
  content: '−';
}

.faq-answer {
  display: none;
  padding-top: var(--space-md);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.faq-answer.open {
  display: block;
}

/* --- About Story --- */
.story-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.story-image {
  aspect-ratio: 4/5;
  background: var(--color-bg-alt);
  overflow: hidden;
}

.story-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.story-text .overline {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-accent-dark);
  margin-bottom: var(--space-md);
}

.story-text h2 {
  margin-bottom: var(--space-lg);
}

.story-text p {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

/* --- Stats Row --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.stat-item {
  text-align: center;
  padding: var(--space-xl);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.stat-label {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}

/* --- Certifications --- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.cert-item {
  text-align: center;
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
}

.cert-icon {
  font-size: 2rem;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.cert-item h4 {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  margin-bottom: var(--space-sm);
}

.cert-item p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* --- Contact Layout --- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

.contact-info h3 {
  margin-bottom: var(--space-lg);
}

.contact-detail {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-detail .contact-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-pale);
  border-radius: 50%;
  font-size: 1rem;
  color: var(--color-accent);
  flex-shrink: 0;
}

.contact-detail h4 {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.contact-detail p {
  font-size: 0.9375rem;
  color: var(--color-text-dark);
}

/* --- Form --- */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text-dark);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

/* --- CTA Section --- */
.cta-section {
  padding: var(--space-3xl) var(--space-lg);
  text-align: center;
  background: var(--color-text-dark);
  color: var(--color-bg);
}

.cta-section h2 {
  color: var(--color-bg);
  margin-bottom: var(--space-md);
}

.cta-section p {
  max-width: 500px;
  margin: 0 auto var(--space-xl);
  color: var(--color-text-light);
  font-size: 1.0625rem;
  font-weight: 300;
}

/* --- Trust Bar --- */
.trust-bar {
  padding: var(--space-xl) var(--space-lg);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.trust-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  align-items: center;
  justify-content: center;
}

.trust-item {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* --- Download Cards --- */
.download-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  padding: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  transition: border-color var(--transition-base);
}

.download-card:hover {
  border-color: var(--color-accent);
}

.download-card h4 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.download-card span {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .serve-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .resource-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .story-layout { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .products-layout { grid-template-columns: 1fr; }
  .products-sidebar { position: static; margin-bottom: var(--space-lg); }
}

@media (max-width: 768px) {
  :root { --nav-height: 64px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
    gap: var(--space-md);
  }
  .category-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .serve-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .resource-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}