/* ============================================
   Home Page
   - Hero / 品牌矩阵 / 产品系列 / 智能制造 / 数据 / 新闻 / CTA
   ============================================ */

/* ========== Hero ========== */
.hero {
  position: relative;
  height: calc(100vh - var(--navbar-height));
  min-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  inset: 0;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(28, 28, 28, 0.45);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-cream);
  padding: 0 var(--space-lg);
  max-width: 860px;
}

.hero-subtitle {
  font-family: var(--font-en-display);
  font-size: 14px;
  letter-spacing: 0.3em;
  color: var(--color-accent);
  margin: 0 0 var(--space-md);
}

.hero-title {
  font-family: var(--font-cn-heading);
  font-size: var(--text-hero);
  font-weight: 400;
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-lg);
  letter-spacing: 0.1em;
}

.title-divider {
  display: inline-block;
  margin: 0 var(--space-sm);
  color: var(--color-accent);
}

.hero-description {
  margin: 0 0 var(--space-xl);
  font-size: 18px;
  line-height: var(--leading-relaxed);
  opacity: 0.9;
}

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

.hero-scroll-hint {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-cream);
  opacity: 0.72;
  z-index: 2;
}

.hero-scroll-hint span {
  font-size: 12px;
  letter-spacing: 0.1em;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background-color: rgba(255, 254, 249, 0.75);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 1), rgba(0, 0, 0, 0));
  animation: scroll-hint 2s infinite;
}

@keyframes scroll-hint {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.55; }
}

/* ========== Brands ========== */
.brands-section {
  background-color: var(--color-warm-ivory);
}

.brand-featured {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
  margin-top: var(--space-xl);
  background-color: var(--color-cream);
  border: 1px solid var(--color-divider);
}

.brand-featured-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.brand-featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.brand-featured:hover .brand-featured-image img {
  transform: scale(1.03);
}

.brand-featured-content {
  padding: var(--space-xl);
}

.brand-logo {
  margin-bottom: var(--space-md);
}

.brand-logo .logo-main {
  display: block;
  font-family: var(--font-en-display);
  font-size: 32px;
  font-weight: 400;
  color: var(--color-primary);
  letter-spacing: 0.1em;
}

.brand-logo .logo-sub {
  display: block;
  font-family: var(--font-cn-heading);
  font-size: 14px;
  color: var(--color-stone);
  letter-spacing: 0.3em;
  margin-top: 4px;
}

.brand-tagline {
  margin: 0 0 var(--space-md);
  font-size: 14px;
  color: var(--color-accent);
}

.brand-description {
  margin: 0 0 var(--space-lg);
  font-size: 15px;
  line-height: var(--leading-relaxed);
  color: var(--color-secondary);
}

.brands-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.brand-card {
  background-color: var(--color-cream);
  border: 1px solid var(--color-divider);
  overflow: hidden;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.brand-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.brand-card-image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.brand-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.brand-card-content {
  padding: var(--space-lg);
}

.brand-name {
  margin: 0 0 var(--space-sm);
}

.brand-name .name-en {
  display: block;
  font-family: var(--font-en-display);
  font-size: 20px;
  font-weight: 400;
  color: var(--color-primary);
  letter-spacing: 0.05em;
}

.brand-name .name-cn {
  display: block;
  font-size: 12px;
  color: var(--color-stone);
  letter-spacing: 0.2em;
  margin-top: 2px;
}

.brand-intro {
  margin: 0 0 var(--space-md);
  font-size: 14px;
  color: var(--color-secondary);
  line-height: var(--leading-normal);
}

/* ========== Products ========== */
.products-section {
  background-color: var(--color-cream);
}

.products-tabs {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.products-tabs a {
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-secondary);
  transition: border-color var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast);
}

.products-tabs a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

.product-card {
  background-color: var(--color-warm-ivory);
  border: 1px solid var(--color-divider);
  overflow: hidden;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.product-card .card-image {
  aspect-ratio: 4 / 5;
  background-color: var(--color-parchment);
}

.product-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.product-category {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.product-name {
  font-family: var(--font-cn-heading);
  font-size: 18px;
  font-weight: 500;
  margin: 0 0 var(--space-sm);
  color: var(--color-primary);
}

.product-desc {
  margin: 0;
  font-size: 14px;
  color: var(--color-secondary);
  line-height: var(--leading-relaxed);
}

.products-cta {
  margin-top: var(--space-xl);
  text-align: center;
}

/* ========== Smart Manufacturing ========== */
.smart-section {
  background-color: var(--color-warm-ivory);
}

.smart-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-2xl);
  align-items: center;
  background-color: var(--color-cream);
  border: 1px solid var(--color-divider);
}

.smart-image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

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

.smart-content {
  padding: var(--space-xl);
}

.smart-title {
  font-size: 28px;
  font-weight: 400;
  margin: 0 0 var(--space-md);
}

.smart-list {
  list-style: none;
  margin: 0 0 var(--space-lg);
  padding: 0;
  display: grid;
  gap: 10px;
}

.smart-list li {
  display: grid;
  grid-template-columns: 14px 1fr;
  gap: 10px;
  align-items: start;
  font-size: 15px;
  color: var(--color-secondary);
  line-height: var(--leading-normal);
}

.smart-list li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
  margin-top: 9px;
}

/* ========== Stats ========== */
.stats-section {
  background-color: var(--color-primary);
}

.stats-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
  padding: var(--space-2xl) 0;
}

.stat-item {
  text-align: center;
  padding: 0 var(--space-lg);
  min-width: 180px;
}

.stat-number {
  display: inline-block;
  font-family: var(--font-en-display);
  font-size: 56px;
  font-weight: 300;
  color: var(--color-accent);
  line-height: 1;
}

.stat-unit {
  font-family: var(--font-cn-body);
  font-size: 18px;
  color: var(--color-cream);
  margin-left: 6px;
}

.stat-label {
  display: block;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
  margin-top: var(--space-xs);
  letter-spacing: 0.12em;
}

.stat-divider {
  width: 1px;
  height: 60px;
  background-color: rgba(255, 255, 255, 0.18);
}

/* ========== News ========== */
.news-section {
  background-color: var(--color-cream);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.news-card {
  background-color: var(--color-cream);
  border: 1px solid var(--color-divider);
  overflow: hidden;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.news-card .card-image {
  aspect-ratio: 3 / 2;
  background-color: var(--color-parchment);
}

.news-date {
  font-family: var(--font-en-display);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin: 0 0 var(--space-xs);
}

.news-title {
  font-family: var(--font-cn-heading);
  font-size: 18px;
  font-weight: 500;
  color: var(--color-primary);
  margin: 0 0 var(--space-sm);
  line-height: var(--leading-tight);
}

.news-desc {
  margin: 0 0 var(--space-md);
  font-size: 14px;
  color: var(--color-secondary);
  line-height: var(--leading-relaxed);
}

.news-cta {
  margin-top: var(--space-xl);
  text-align: center;
}

/* ========== CTA ========== */
.cta-section {
  background-color: var(--color-warm-ivory);
}

.cta-box {
  background-color: var(--color-cream);
  border: 1px solid var(--color-divider);
  padding: var(--space-2xl);
  text-align: center;
}

.cta-title {
  font-size: 32px;
  font-weight: 400;
  margin: 0 0 var(--space-sm);
}

.cta-desc {
  margin: 0 0 var(--space-lg);
  color: var(--color-secondary);
  line-height: var(--leading-relaxed);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .hero {
    min-height: 620px;
  }

  .brand-featured,
  .smart-grid {
    grid-template-columns: 1fr;
  }

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

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

  .stat-divider {
    display: none;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 36px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

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

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

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

  .stat-item {
    min-width: 140px;
    padding: 0 var(--space-md);
  }

  .stat-number {
    font-size: 40px;
  }

  .cta-box {
    padding: var(--space-xl);
  }
}