/* 鹏辰新材料官网 - 占位图样式 */

/* Hero 轮播背景图占位 */
.hero-slider .slide:nth-child(1) .slide-bg {
  background: linear-gradient(135deg, #0a2010 0%, #1a4a22 50%, #0d3018 100%),
              url('https://images.unsplash.com/photo-1581091226825-a6a2a5aee158?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
}

.hero-slider .slide:nth-child(2) .slide-bg {
  background: linear-gradient(135deg, #071e38 0%, #0e3d68 50%, #1a5c8a 100%),
              url('https://images.unsplash.com/photo-1497436072909-60f360e1d4b1?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
}

.hero-slider .slide:nth-child(3) .slide-bg {
  background: linear-gradient(135deg, #0a1e26 0%, #0f3d42 50%, #184a32 100%),
              url('https://images.unsplash.com/photo-1578575437130-527eed3abbec?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
}

/* 首页 - 关于我们工厂图片 */
.factory-img {
  background: linear-gradient(135deg, rgba(26, 122, 40, 0.85), rgba(21, 101, 192, 0.85)),
              url('https://images.unsplash.com/photo-1518156808606-18585a6a66b6?ixlib=rb-4.0.3&auto=format&fit=crop&w=800&q=80') center/cover no-repeat;
  min-height: 400px;
  border-radius: 12px;
}

/* 首页 - 新闻配图 */
.news-img-placeholder {
  background: linear-gradient(135deg, rgba(31, 122, 40, 0.9), rgba(61, 181, 74, 0.9)),
              url('https://images.unsplash.com/photo-1497366216548-37526070297c?ixlib=rb-4.0.3&auto=format&fit=crop&w=800&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
}

/* 公司介绍页 - 页头 Banner */
.page-banner {
  background-size: cover;
  background-position: center;
}

.about-section .page-banner {
  background-image: linear-gradient(135deg, rgba(10, 32, 16, 0.9), rgba(26, 74, 34, 0.9)),
                      url('https://images.unsplash.com/photo-1565793298595-6a879b1d9492?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
}

/* 公司介绍 - 图片 */
.intro-img-main {
  background: linear-gradient(135deg, rgba(26, 122, 40, 0.85), rgba(61, 181, 74, 0.85)),
              url('https://images.unsplash.com/photo-1504307651254-35680f356dfd?ixlib=rb-4.0.3&auto=format&fit=crop&w=800&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
  min-height: 350px;
  border-radius: 12px;
}

.intro-img-sub {
  background: linear-gradient(135deg, rgba(21, 101, 192, 0.85), rgba(43, 127, 195, 0.85)),
              url('https://images.unsplash.com/photo-1532094349884-543bc11b234d?ixlib=rb-4.0.3&auto=format&fit=crop&w=600&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
  min-height: 200px;
  border-radius: 12px;
}

/* 苏州基地 */
.suzhou-section .base-img {
  background: linear-gradient(135deg, rgba(26, 122, 40, 0.85), rgba(46, 125, 50, 0.85)),
              url('https://images.unsplash.com/photo-1581091226825-a6a2a5aee158?ixlib=rb-4.0.3&auto=format&fit=crop&w=800&q=80') center/cover no-repeat !important;
  background-blend-mode: overlay;
}

/* 连云港基地 */
.lianyungang-section .base-img {
  background: linear-gradient(135deg, rgba(14, 53, 96, 0.85), rgba(21, 101, 192, 0.85)),
              url('https://images.unsplash.com/photo-1504307651254-35680f356dfd?ixlib=rb-4.0.3&auto=format&fit=crop&w=800&q=80') center/cover no-repeat !important;
  background-blend-mode: overlay;
}

/* 产品介绍页 Banner */
.prod-banner {
  background-image: linear-gradient(135deg, rgba(10, 32, 16, 0.9), rgba(26, 74, 34, 0.9), rgba(14, 53, 96, 0.9)),
                      url('https://images.unsplash.com/photo-1532094349884-543bc11b234d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
}

/* 新闻动态页 Banner */
.news-section .page-banner,
.news-page-section ~ .page-banner {
  background-image: linear-gradient(135deg, rgba(10, 26, 46, 0.9), rgba(21, 53, 90, 0.9), rgba(10, 31, 58, 0.9)),
                      url('https://images.unsplash.com/photo-1517245386807-bb43f82c33c4?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
}

/* 新闻卡片配图 */
.news-page-card .npc-img {
  background: linear-gradient(135deg, rgba(13, 71, 161, 0.85), rgba(25, 118, 210, 0.85)),
              url('https://images.unsplash.com/photo-1497366216548-37526070297c?ixlib=rb-4.0.3&auto=format&fit=crop&w=800&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
}

.news-page-item:nth-child(1) .npi-img {
  background: linear-gradient(135deg, rgba(27, 94, 32, 0.85), rgba(56, 142, 60, 0.85)),
              url('https://images.unsplash.com/photo-1569163139599-0f4517e36f51?ixlib=rb-4.0.3&auto=format&fit=crop&w=600&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
}

.news-page-item:nth-child(2) .npi-img {
  background: linear-gradient(135deg, rgba(136, 14, 79, 0.85), rgba(173, 20, 87, 0.85)),
              url('https://images.unsplash.com/photo-1581091226825-a6a2a5aee158?ixlib=rb-4.0.3&auto=format&fit=crop&w=600&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
}

.news-page-item:nth-child(3) .npi-img {
  background: linear-gradient(135deg, rgba(230, 81, 0, 0.85), rgba(245, 124, 0, 0.85)),
              url('https://images.unsplash.com/photo-1497436072909-60f360e1d4b1?ixlib=rb-4.0.3&auto=format&fit=crop&w=600&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
}

.news-page-item:nth-child(4) .npi-img {
  background: linear-gradient(135deg, rgba(26, 35, 126, 0.85), rgba(63, 81, 181, 0.85)),
              url('https://images.unsplash.com/photo-1532094349884-543bc11b234d?ixlib=rb-4.0.3&auto=format&fit=crop&w=600&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
}

.news-page-item:nth-child(5) .npi-img {
  background: linear-gradient(135deg, rgba(0, 77, 64, 0.85), rgba(0, 105, 92, 0.85)),
              url('https://images.unsplash.com/photo-1578575437130-527eed3abbec?ixlib=rb-4.0.3&auto=format&fit=crop&w=600&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
}

.news-page-item:nth-child(6) .npi-img {
  background: linear-gradient(135deg, rgba(51, 105, 30, 0.85), rgba(85, 139, 47, 0.85)),
              url('https://images.unsplash.com/photo-1504307651254-35680f356dfd?ixlib=rb-4.0.3&auto=format&fit=crop&w=600&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
}

.news-page-item:nth-child(7) .npi-img {
  background: linear-gradient(135deg, rgba(74, 20, 140, 0.85), rgba(123, 31, 162, 0.85)),
              url('https://images.unsplash.com/photo-1569163139599-0f4517e36f51?ixlib=rb-4.0.3&auto=format&fit=crop&w=600&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
}

.news-page-item:nth-child(8) .npi-img {
  background: linear-gradient(135deg, rgba(191, 54, 12, 0.85), rgba(216, 67, 21, 0.85)),
              url('https://images.unsplash.com/photo-1518156808606-18585a6a66b6?ixlib=rb-4.0.3&auto=format&fit=crop&w=600&q=80') center/cover no-repeat;
  background-blend-mode: overlay;
}

/* 响应式图片加载优化 */
@media (max-width: 768px) {
  .factory-img {
    min-height: 280px;
  }

  .intro-img-main {
    min-height: 250px;
  }

  .intro-img-sub {
    min-height: 180px;
  }

  .news-img-placeholder {
    min-height: 200px;
  }
}

/* 图片懒加载优化 */
img[loading="lazy"] {
  transition: opacity 0.3s ease;
}

img[loading="lazy"] {
  opacity: 0;
}

img[loading="lazy"].loaded {
  opacity: 1;
}