/* ============================================================
   Chaoyan Brown Fused Alumina - English Export Website
   Professional Industrial B2B Style
   ============================================================ */

/* --- CSS Variables --- */
:root {
  --color-dark: #1a1a1a;
  --color-dark-secondary: #2d2d2d;
  --color-gray: #555555;
  --color-gray-light: #888888;
  --color-gray-lighter: #b0b0b0;
  --color-border: #e0e0e0;
  --color-bg: #fafafa;
  --color-bg-secondary: #f5f5f5;
  --color-white: #ffffff;
  --color-bfa-brown: #8B5E3C;
  --color-bfa-copper: #B87333;
  --color-bfa-warm: #C4956A;
  --color-bfa-light: #F0E6D8;
  --color-accent: #8B5E3C;
  --color-accent-hover: #A0704A;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-success: #4A7C59;
  --color-error: #C44D4D;

  --font-heading: 'Georgia', 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;

  --max-width: 1200px;
  --header-height: 72px;
  --radius: 4px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

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

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section--gray {
  background: var(--color-bg-secondary);
}

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-dark);
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--color-white);
}

.section__label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.section__title {
  margin-bottom: 16px;
}

.section__subtitle {
  font-size: 1.1rem;
  color: var(--color-text-light);
  max-width: 680px;
  margin-bottom: 40px;
  line-height: 1.6;
}

.section--dark .section__subtitle {
  color: var(--color-gray-lighter);
}

.section__header {
  text-align: center;
  margin-bottom: 56px;
}

.section__header .section__subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-body);
  border: 2px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  line-height: 1.2;
}

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

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

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

.btn--outline:hover {
  background: var(--color-white);
  color: var(--color-dark);
}

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

.btn--outline-dark:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn--sm {
  padding: 8px 20px;
  font-size: 0.85rem;
}

.btn--lg {
  padding: 16px 40px;
  font-size: 1rem;
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

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

.header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-dark);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
}

.header__logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-accent);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.header__nav a {
  padding: 8px 16px;
  font-size: 0.9rem;
  color: var(--color-text-light);
  font-weight: 500;
  border-radius: var(--radius);
  transition: all var(--transition);
}

.header__nav a:hover,
.header__nav a.active {
  color: var(--color-accent);
  background: var(--color-bfa-light);
}

.header__nav-cta {
  margin-left: 12px;
}

.header__nav-cta .btn {
  padding: 10px 22px;
  font-size: 0.85rem;
}

/* Mobile Menu Button */
.header__menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-dark);
}

.header__menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  margin: 5px 0;
  transition: all var(--transition);
  border-radius: 1px;
}

.header__menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.header__menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero Section --- */
.hero {
  margin-top: var(--header-height);
  background: var(--color-dark);
  color: var(--color-white);
  position: relative;
  height: 620px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* Hero with real background image */
.hero--image {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,26,26,0.82) 0%, rgba(26,26,26,0.65) 50%, rgba(26,26,26,0.82) 100%);
  z-index: 0;
}

.hero__bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: radial-gradient(circle at 25% 50%, var(--color-bfa-brown) 1px, transparent 1px),
                    radial-gradient(circle at 75% 50%, var(--color-bfa-copper) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: 0 0, 20px 20px;
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}

.hero__text {
  max-width: 700px;
  margin: 0 auto;
}

.hero__label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-bfa-copper);
  margin-bottom: 16px;
}

.hero__title {
  font-size: 2.75rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 18px;
  color: var(--color-white);
}

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--color-gray-lighter);
  margin-bottom: 32px;
  line-height: 1.5;
}

.hero__actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Homepage Product Cards --- */
.home-products {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  max-width: 1180px;
  margin: 0 auto;
}

.product-card {
  background: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(0,0,0,0.08);
  transition: box-shadow var(--transition), transform var(--transition);
}

.product-card:hover {
  box-shadow: 0 16px 40px rgba(0,0,0,0.12);
  transform: translateY(-2px);
}

.product-card-image {
  width: 100%;
  height: 320px;
  overflow: hidden;
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.product-card-body {
  padding: 24px;
}

.product-card-body h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: var(--color-dark);
}

.product-card-body p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.55;
  margin-bottom: 16px;
}

.product-card-body .btn {
  font-size: 0.85rem;
}

/* --- Application Strip --- */
.app-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.app-strip__item {
  padding: 14px 16px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  text-align: center;
}

/* --- Products Page Grid --- */
.products-grid--page {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.product-card--page {
  background: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(0,0,0,0.08);
}

.product-card--page img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  display: block;
}

.product-card--page__body {
  padding: 28px;
}

.product-card--page__body h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.product-card--page__body .desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 14px;
}

.product-card--page__body .specs {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 6px;
}

.product-card--page__body .specs strong {
  color: var(--color-text);
}

/* --- Processed Options --- */
.processed-options {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.option-card {
  background: var(--color-white);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 10px;
  padding: 28px 24px;
  transition: box-shadow var(--transition);
}

.option-card:hover {
  box-shadow: var(--shadow-md);
}

.option-card h4 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--color-dark);
}

.option-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.55;
}

/* --- How to Choose Grid --- */
.choose-grid {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.choose-item {
  padding: 32px 28px;
  background: var(--color-bg-secondary);
  border-radius: 10px;
  text-align: center;
}

.choose-item h4 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.choose-item p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.55;
}

/* --- Products Page Banner --- */
.products-banner {
  margin-top: var(--header-height);
  height: 340px;
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.products-banner__overlay {
  position: absolute;
  inset: 0;
  background: rgba(26,26,26,0.72);
}

.products-banner__content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
  padding: 0 24px;
}

.products-banner__content h1 {
  color: var(--color-white);
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.products-banner__content p {
  font-size: 1.1rem;
  color: var(--color-gray-lighter);
  max-width: 600px;
  margin: 0 auto 20px;
}

/* Responsive for products page */
@media (max-width: 1024px) {
  .products-grid--page {
    gap: 20px;
  }

  .product-card--page img {
    height: 260px;
  }

  .processed-options {
    grid-template-columns: repeat(2, 1fr);
  }

  .choose-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-banner {
    height: 280px;
  }

  .products-banner__content h1 {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .products-grid--page {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .product-card--page img {
    height: 240px;
  }

  .processed-options {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .choose-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .products-banner {
    height: 240px;
  }

  .products-banner__content h1 {
    font-size: 1.7rem;
  }
}

/* --- Applications Page --- */
.applications-hero {
  margin-top: var(--header-height);
  height: 420px;
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.applications-hero__overlay {
  position: absolute;
  inset: 0;
  background: rgba(26,26,26,0.65);
}

.applications-hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
  padding: 0 24px;
}

.applications-hero__content h1 {
  color: var(--color-white);
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.applications-hero__content p {
  font-size: 1.1rem;
  color: var(--color-gray-lighter);
  max-width: 600px;
  margin: 0 auto 20px;
}

.applications-grid {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.application-card {
  background: var(--color-white);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 14px;
  padding: 30px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.06);
  transition: box-shadow var(--transition);
}

.application-card:hover {
  box-shadow: var(--shadow-md);
}

.application-number {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--color-bfa-copper);
  font-weight: 700;
  margin-bottom: 14px;
  text-transform: uppercase;
}

.application-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.application-card .desc {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.55;
  margin-bottom: 16px;
}

.application-card .recommended {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(0,0,0,0.08);
  font-size: 0.83rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.application-card .recommended strong {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

/* Selection Guide */
.selection-grid {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.selection-item {
  padding: 32px 28px;
  background: var(--color-bg-secondary);
  border-radius: 10px;
  text-align: center;
}

.selection-item h4 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.selection-item p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.55;
}

/* Applications page responsive */
@media (max-width: 1024px) {
  .applications-hero {
    height: 340px;
  }

  .applications-hero__content h1 {
    font-size: 2rem;
  }

  .applications-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .selection-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .applications-hero {
    height: 320px;
  }

  .applications-hero__content h1 {
    font-size: 1.7rem;
  }

  .applications-hero__content p {
    font-size: 0.95rem;
  }

  .applications-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .selection-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* --- Stats Bar --- */
.stats-bar {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.stats-bar__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stats-bar__item {
  padding: 28px 24px;
  text-align: center;
  border-right: 1px solid var(--color-border);
}

.stats-bar__item:last-child {
  border-right: none;
}

.stats-bar__number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  font-family: var(--font-heading);
  margin-bottom: 4px;
}

.stats-bar__label {
  font-size: 0.85rem;
  color: var(--color-gray);
}

/* --- Company Overview --- */
.overview {
  padding: 80px 0;
}

.overview__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.overview__image {
  border-radius: 12px;
  overflow: hidden;
  background: var(--color-bg-secondary);
  height: 420px;
}

.overview__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.overview__features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 28px;
}

.overview__feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.overview__feature-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-accent);
}

.overview__feature-text {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* --- Product Cards --- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

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

.product-card__image {
  aspect-ratio: 3/2;
  background: var(--color-bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-card__body {
  padding: 24px;
}

.product-card__title {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.product-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.5;
}

.product-card__link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.product-card__link:hover {
  gap: 10px;
}

/* --- Application Cards --- */
.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.app-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition);
}

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

.app-card__icon {
  width: 48px;
  height: 48px;
  background: var(--color-bfa-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-accent);
}

.app-card__title {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.app-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* --- Factory Strength --- */
.factory-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.factory-card {
  text-align: center;
  padding: 32px 20px;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.1);
}

.factory-card__number {
  font-size: 2.5rem;
  font-weight: 700;
  font-family: var(--font-heading);
  color: var(--color-bfa-copper);
  margin-bottom: 8px;
}

.factory-card__label {
  font-size: 0.9rem;
  color: var(--color-gray-lighter);
}

.factory-process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.factory-process__item {
  position: relative;
  padding: 28px 20px;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.08);
}

.factory-process__step {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-bfa-copper);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.factory-process__title {
  font-size: 1.05rem;
  margin-bottom: 6px;
  color: var(--color-white);
}

.factory-process__desc {
  font-size: 0.85rem;
  color: var(--color-gray-lighter);
  line-height: 1.5;
}

/* --- Quality Table --- */
.quality-table-wrap {
  overflow-x: auto;
}

.quality-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.quality-table th,
.quality-table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.quality-table th {
  background: var(--color-bg-secondary);
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.quality-table tr:hover td {
  background: var(--color-bg);
}

.quality-control-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.qc-card {
  padding: 28px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-accent);
}

.qc-card__title {
  font-size: 1rem;
  margin-bottom: 6px;
}

.qc-card__desc {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* --- CTA Section --- */
.cta-section {
  background: var(--color-dark);
  color: var(--color-white);
  padding: 80px 0;
  text-align: center;
}

.cta-section__title {
  color: var(--color-white);
  margin-bottom: 16px;
}

.cta-section__text {
  max-width: 600px;
  margin: 0 auto 32px;
  color: var(--color-gray-lighter);
  font-size: 1.05rem;
  line-height: 1.6;
}

.cta-section__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Footer --- */
.footer {
  background: var(--color-dark-secondary);
  color: var(--color-gray-lighter);
  padding: 60px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}

/* Footer Logo */
.footer-logo {
  margin-bottom: 16px;
}

.footer-logo img {
  width: 160px;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
}

.footer-logo__fallback {
  display: none;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
}

.footer__brand {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--color-white);
  margin-bottom: 8px;
}

.footer__tagline {
  font-size: 0.85rem;
  color: var(--color-bfa-copper);
  font-weight: 500;
  margin-bottom: 10px;
  line-height: 1.4;
}

.footer__desc {
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 16px;
  color: var(--color-gray-lighter);
}

.footer__heading {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-bfa-copper);
  margin-bottom: 16px;
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: 7px;
}

.footer__links a {
  color: var(--color-gray-lighter);
  font-size: 0.85rem;
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--color-bfa-copper);
}

.footer__contact-text {
  font-size: 0.85rem;
  color: var(--color-gray-lighter);
  line-height: 1.7;
}

.footer__contact-text a {
  color: var(--color-gray-lighter);
  transition: color var(--transition);
}

.footer__contact-text a:hover {
  color: var(--color-bfa-copper);
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 0.82rem;
  color: var(--color-gray);
}

.footer__bottom strong {
  color: var(--color-gray-lighter);
}

/* --- Page Header (inner pages) --- */
.page-header {
  margin-top: var(--header-height);
  background: var(--color-bg-secondary);
  padding: 60px 0;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.page-header__title {
  margin-bottom: 8px;
}

.page-header__breadcrumb {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.page-header__breadcrumb a {
  color: var(--color-accent);
}

/* --- Contact Hero --- */
.contact-hero {
  margin-top: var(--header-height);
  height: 420px;
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
}

.contact-hero__overlay {
  position: absolute;
  inset: 0;
  background: rgba(26,26,26,0.62);
}

.contact-hero__content {
  position: relative;
  z-index: 1;
  color: var(--color-white);
  padding: 0 24px;
}

.contact-hero__content h1 {
  color: var(--color-white);
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.contact-hero__content p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  line-height: 1.55;
  margin-bottom: 20px;
}

@media (max-width: 1024px) {
  .contact-hero {
    height: 340px;
  }
  .contact-hero__content h1 {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .contact-hero {
    height: 320px;
  }
  .contact-hero__content h1 {
    font-size: 1.7rem;
  }
  .contact-hero__content p {
    font-size: 0.95rem;
  }
}

/* --- About Page --- */
.about-section {
  padding: 80px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-grid--reverse {
  direction: rtl;
}

.about-grid--reverse > * {
  direction: ltr;
}

.about-image {
  border-radius: 12px;
  overflow: hidden;
  height: 420px;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

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

.about-text__title {
  margin-bottom: 16px;
}

.about-text__content {
  color: var(--color-text-light);
  line-height: 1.7;
}

.about-text__content p {
  margin-bottom: 16px;
}

/* Values grid */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.value-card {
  padding: 28px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  text-align: center;
}

.value-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  background: var(--color-bfa-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

.value-card__title {
  font-size: 1rem;
  margin-bottom: 6px;
}

.value-card__desc {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* --- Products Page --- */
.products-page-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.product-detail-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  transition: all var(--transition);
}

.product-detail-card:hover {
  box-shadow: var(--shadow-md);
}

.product-detail-card__image {
  background: var(--color-bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}

.product-detail-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-detail-card__body {
  padding: 28px;
  display: flex;
  flex-direction: column;
}

.product-detail-card__title {
  font-size: 1.2rem;
  margin-bottom: 6px;
}

.product-detail-card__subtitle {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 12px;
}

.product-detail-card__specs {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.product-detail-card__specs span {
  font-weight: 600;
  color: var(--color-text);
}

.product-detail-card__uses {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.5;
  margin-bottom: 16px;
  flex-grow: 1;
}

/* --- Blog Page --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.blog-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

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

.blog-card__image {
  aspect-ratio: 16/9;
  background: var(--color-bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.blog-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card__body {
  padding: 24px;
}

.blog-card__date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.blog-card__title {
  font-size: 1.1rem;
  margin-bottom: 8px;
  line-height: 1.4;
}

.blog-card__excerpt {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.5;
  margin-bottom: 12px;
}

.blog-card__link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* --- Blog Post Detail --- */
.blog-post {
  max-width: 760px;
  margin: 0 auto;
  padding: 60px 24px;
}

.blog-post__meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.blog-post__title {
  font-size: 2.25rem;
  margin-bottom: 32px;
}

.blog-post__content h2 {
  font-size: 1.5rem;
  margin: 40px 0 16px;
}

.blog-post__content h3 {
  font-size: 1.2rem;
  margin: 28px 0 12px;
}

.blog-post__content p {
  margin-bottom: 16px;
  color: var(--color-text-light);
  line-height: 1.75;
}

.blog-post__content ul,
.blog-post__content ol {
  margin-bottom: 16px;
  padding-left: 24px;
  list-style: disc;
}

.blog-post__content li {
  margin-bottom: 8px;
  color: var(--color-text-light);
}

.blog-post__content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}

.blog-post__content table th,
.blog-post__content table td {
  padding: 10px 16px;
  border: 1px solid var(--color-border);
  text-align: left;
}

.blog-post__content table th {
  background: var(--color-bg-secondary);
  font-weight: 600;
}

/* --- Contact Page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info__title {
  margin-bottom: 16px;
}

.contact-info__text {
  color: var(--color-text-light);
  margin-bottom: 28px;
  line-height: 1.6;
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}

.contact-info__item-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--color-accent);
}

.contact-info__item-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.contact-info__item-value {
  font-size: 0.95rem;
  color: var(--color-text);
}

/* Contact Form */
.contact-form {
  background: var(--color-bg-secondary);
  padding: 36px;
  border-radius: var(--radius-lg);
}

.contact-form__title {
  margin-bottom: 24px;
  font-size: 1.3rem;
}

.form-group {
  margin-bottom: 18px;
}

.form-group__label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-group__required {
  color: var(--color-error);
}

.form-control {
  width: 100%;
  padding: 12px 14px;
  font-size: 0.95rem;
  font-family: var(--font-body);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-white);
  color: var(--color-text);
  transition: border-color var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(139, 94, 60, 0.1);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* --- Image Containers — Real Images --- */
.hero__image img,
.overview__image img,
.product-card__image img,
.product-detail-card__image img,
.about-image img,
.blog-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* --- Placeholder images (fallback, kept for safety) --- */
.img-placeholder {
  width: 100%;
  height: 100%;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-secondary);
  color: var(--color-gray-lighter);
  gap: 12px;
  font-size: 0.85rem;
  text-align: center;
  padding: 20px;
}

.img-placeholder--dark {
  background: rgba(255,255,255,0.03);
  color: rgba(255,255,255,0.3);
}

.img-placeholder svg {
  opacity: 0.35;
}

/* --- Responsive: Tablet --- */
@media (max-width: 1024px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.85rem; }

  .hero {
    height: 480px;
  }

  .hero__content {
    padding: 60px 24px;
  }

  .hero__title {
    font-size: 2.25rem;
  }

  .hero__subtitle {
    font-size: 1rem;
  }

  .overview__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .home-products {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .product-card-image {
    height: 260px;
  }

  .app-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .app-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .factory-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .factory-process {
    grid-template-columns: repeat(2, 1fr);
  }

  .quality-control-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .stats-bar__inner {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-bar__item:nth-child(2) {
    border-right: none;
  }

  .products-page-grid {
    grid-template-columns: 1fr;
  }

  .product-detail-card {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Responsive: Mobile --- */
@media (max-width: 768px) {
  h1 { font-size: 1.85rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.2rem; }

  .section {
    padding: 56px 0;
  }

  .hero {
    height: 420px;
  }

  .hero__content {
    padding: 50px 20px;
  }

  .hero__title {
    font-size: 1.7rem;
  }

  .hero__subtitle {
    font-size: 0.95rem;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__actions .btn {
    justify-content: center;
  }

  .home-products {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .product-card-image {
    height: 240px;
  }

  .app-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 4px;

  .overview__image,
  .about-image {
    height: 280px;
  }
  }

  .app-strip__item {
    padding: 10px 12px;
    font-size: 0.8rem;
  }

  /* Mobile nav */
  .header__menu-btn {
    display: block;
    position: relative;
    z-index: 1001;
  }

  .header__nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-white);
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 1000;
  }

  .header__nav.active {
    transform: translateX(0);
  }

  .header__nav a {
    font-size: 1.1rem;
    padding: 12px 24px;
  }

  .header__nav-cta {
    margin-left: 0;
    margin-top: 16px;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .app-grid {
    grid-template-columns: 1fr;
  }

  .factory-grid {
    grid-template-columns: 1fr;
  }

  .factory-process {
    grid-template-columns: 1fr;
  }

  .quality-control-grid {
    grid-template-columns: 1fr;
  }

  .stats-bar__inner {
    grid-template-columns: 1fr 1fr;
  }

  .stats-bar__item:nth-child(2),
  .stats-bar__item:nth-child(4) {
    border-right: none;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }

  .values-grid {
    grid-template-columns: 1fr;
  }

  .section__header {
    margin-bottom: 36px;
  }

  .product-detail-card {
    grid-template-columns: 1fr;
  }

  .cta-section__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-section__actions .btn {
    justify-content: center;
  }
}

/* --- Utility --- */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.mt-0 { margin-top: 0; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-0 { margin-bottom: 0; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* Print styles */
@media print {
  .header, .footer, .cta-section, .hero__actions {
    display: none;
  }
  body {
    font-size: 12pt;
  }
}