/* ===== 首页专用样式 ===== */

/* Hero Banner（轮播） */
.hero {
  position: relative;
  height: calc(100vh - var(--header-height));
  min-height: 520px;
  max-height: 760px;
  overflow: hidden;
  background: linear-gradient(135deg, #0a2540 0%, #1a3a5c 100%);
}

.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  opacity: 0;
  transition: opacity 1s ease;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 37, 64, 0.55), rgba(10, 37, 64, 0.7));
}

.hero-slide-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: -1;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding-inline: var(--space-4);
  animation: fadeInUp 0.8s ease both;
}

.hero-tag {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-sm);
  letter-spacing: 0.2em;
  background-color: rgba(23, 129, 230, 0.2);
  border: 1px solid rgba(23, 129, 230, 0.4);
  border-radius: 999px;
  margin-bottom: var(--space-6);
}

.hero-title {
  font-size: var(--fs-5xl);
  font-weight: var(--fw-bold);
  line-height: 1.15;
  margin-bottom: var(--space-5);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.hero-desc {
  font-size: var(--fs-lg);
  line-height: 1.7;
  opacity: 0.92;
  margin-bottom: var(--space-8);
  max-width: 720px;
  margin-inline: auto;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* 轮播指示器 */
.hero-dots {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-2);
  z-index: 2;
}

.hero-dot {
  width: 32px;
  height: 4px;
  background-color: rgba(255, 255, 255, 0.4);
  border-radius: 2px;
  cursor: pointer;
  transition: all var(--transition-base);
}

.hero-dot.active {
  background-color: #fff;
  width: 48px;
}

/* 优势区 */
.advantages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.advantage-card {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  background-color: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

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

.advantage-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: 50%;
}

.advantage-title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-2);
}

.advantage-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* 产品中心 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.product-card {
  background-color: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

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

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

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

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

.product-body {
  padding: var(--space-5);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-subtitle {
  font-size: var(--fs-xs);
  color: var(--color-primary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.product-name {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-3);
}

.product-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
}

/* 关于简介 */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.about-image {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  background: var(--color-bg-soft);
  overflow: hidden;
}

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

.about-content h2 {
  font-size: var(--fs-3xl);
  margin-bottom: var(--space-4);
}

.about-tag {
  display: inline-block;
  font-size: var(--fs-sm);
  color: var(--color-primary);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.about-content p {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.about-stat-num {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  color: var(--color-primary);
  line-height: 1;
}

.about-stat-label {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

/* 留资 CTA */
.cta {
  position: relative;
  background: linear-gradient(135deg, var(--color-primary) 0%, #0e62b9 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-16) var(--space-8);
  text-align: center;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at top right,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 50%
  );
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta h2 {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  margin-bottom: var(--space-4);
}

.cta p {
  font-size: var(--fs-base);
  opacity: 0.9;
  margin-bottom: var(--space-8);
  max-width: 640px;
  margin-inline: auto;
}

.cta-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

.cta .btn {
  background-color: #fff;
  color: var(--color-primary);
}

.cta .btn:hover {
  background-color: var(--color-primary-dark);
  color: #fff;
}

.cta .btn-outline {
  background-color: transparent;
  color: #fff;
  border-color: #fff;
}

.cta .btn-outline:hover {
  background-color: #fff;
  color: var(--color-primary);
}

/* 最新新闻 */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.news-mini {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.news-mini:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
  color: inherit;
}

.news-mini-image {
  width: 110px;
  height: 80px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg-soft);
}

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

.news-mini-content {
  flex: 1;
  min-width: 0;
}

.news-mini-title {
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  margin-bottom: var(--space-1);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.news-mini:hover .news-mini-title {
  color: var(--color-primary);
}

.news-mini-date {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

@media (max-width: 1024px) {
  .hero-title {
    font-size: var(--fs-3xl);
  }
  .advantages {
    grid-template-columns: repeat(2, 1fr);
  }
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--fs-2xl);
  }
  .hero-desc {
    font-size: var(--fs-base);
  }
  .advantages,
  .products-grid {
    grid-template-columns: 1fr;
  }
  .about-stats {
    grid-template-columns: 1fr;
  }
  .cta {
    padding: var(--space-10) var(--space-4);
  }
}