/* ===================================
   麦之盾官网 主样式
   设计稿：1920px 内容区 1500px 居中
   =================================== */

/* ---------- 字体 ---------- */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700&display=swap');

:root {
  --blue-dark:  #1F3F8A;
  --blue-mid:   #1E50AE;
  --red:        #CA1929;
  --text-dark:  #333333;
  --text-gray:  #666666;
  --text-light: #999999;
  --bg-gray:    #F0F0F0;
  --white:      #FFFFFF;
  --nav-h:      70px;
  --content-w:  1500px;
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  color: var(--text-dark);
  background: var(--white);
  font-size: 16px;
}

img { max-width: 100%; height: auto; display: block; }
a   { text-decoration: none; color: inherit; }

/* 内容区居中容器 */
.content-wrap {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 0 15px;
}

/* ===================================
   导航栏
   =================================== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 999;
  width: 100%;
  height: var(--nav-h);
  background: var(--white);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.site-nav .inner {
  max-width: 1920px;
  margin: 0 auto;
  padding: 0 210px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 0;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}
.nav-logo img  { width: 60px; height: 60px; object-fit: contain; border-radius: 4px; }
.nav-logo span {
  font-family: 'AlibabaPuHuiTi', 'PingFang SC', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: var(--blue-mid);
  white-space: nowrap;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
  margin: 0 0 0 auto;
  padding: 0;
}
.nav-menu li a {
  display: block;
  padding: 0 18px;
  height: var(--nav-h);
  line-height: var(--nav-h);
  font-size: 17px;
  color: var(--text-dark);
  white-space: nowrap;
  position: relative;
  transition: color .2s;
}
.nav-menu li a:hover,
.nav-menu li a.active {
  color: var(--blue-mid);
}
.nav-menu li a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  min-width: 50px;
  height: 4px;
  border-radius: 109px;
  background: var(--blue-mid);
}
.nav-phone {
  margin-left: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(30, 80, 174, 0.1);
  border-radius: 280px;
  padding: 0 16px;
  height: 46px;
  white-space: nowrap;
  font-size: 20px;
  font-weight: 700;
  color: var(--blue-mid);
  font-family: 'Alimama ShuHeiTi', 'PingFang SC', sans-serif;
}
.nav-phone svg { flex-shrink: 0; }

/* 汉堡菜单按钮（移动端显示） */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all .3s;
}

/* ===================================
   页面内页Banner（关于/产品/新闻等）
   =================================== */
.page-banner {
  position: relative;
  width: 100%;
  height: 260px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-banner img.banner-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.page-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(31, 63, 138, 0.5);
  z-index: 1;
}
.page-banner .banner-title {
  position: relative;
  z-index: 2;
  font-size: clamp(28px, 3vw, 47px);
  font-weight: 600;
  color: var(--white);
  letter-spacing: 2px;
  text-align: center;
}

/* ===================================
   面包屑
   =================================== */
.breadcrumb-bar {
  background: var(--white);
  padding: 14px 0;
  border-bottom: 1px solid #eee;
}
.breadcrumb-bar .content-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-dark);
}
.breadcrumb-bar a { color: var(--text-dark); }
.breadcrumb-bar a:hover { color: var(--blue-mid); }
.breadcrumb-bar .sep { color: #ccc; }
.breadcrumb-bar .current { color: var(--text-gray); }

/* ===================================
   首页 Banner 轮播
   =================================== */
.home-carousel {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: linear-gradient(180deg, #F3F7FB 0%, #E8F0FA 100%);
}
.carousel { position: relative; }
.carousel-inner {
  position: relative;
  width: 100%;
  overflow: hidden;
  height: clamp(300px, 45vw, 640px);
}
.carousel-item {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  opacity: 0;
  transition: opacity .6s ease;
}
.carousel-item.active { opacity: 1; }
.home-carousel img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* Banner 查看详情浮层按钮 */
.btn-banner-detail {
  position: absolute;
  bottom: 21%;
  left: 252px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #1E50AE;
  color: var(--white);
  padding: 15px 60px;
  border-radius: 50px;
  font-size: 25px;
  font-weight: 500
  z-index: 5;
  white-space: nowrap;
  transition: opacity .2s;
}
.btn-banner-detail:hover { opacity: .85; color: var(--white); }

@media (max-width: 1280px) {
  .btn-banner-detail { left: 40px; font-size: 16px; padding: 11px 26px; }
}
@media (max-width: 1024px) {
  .btn-banner-detail { left: 24px; font-size: 14px; padding: 10px 22px; }
}

/* 空 Banner 占位 */
.banner-placeholder {
  width: 100%;
  height: clamp(300px, 45vw, 640px);
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-mid) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--white);
}
.banner-placeholder h1 { font-size: clamp(28px, 3vw, 47px); font-weight: 600; }
.banner-placeholder p  { font-size: 18px; opacity: .8; }

/* ===================================
   首页 - 公司介绍/视频区
   =================================== */
.home-intro {
  padding: 80px 0 60px;
  background: var(--white);
}
.home-intro .section-head { text-align: center; margin-bottom: 50px; }
.home-intro .section-head h2 {
  font-size: clamp(24px, 2.5vw, 40px);
  font-weight: 600;
  color: var(--text-dark);
  margin: 0 0 12px;
}
.home-intro .section-head p {
  font-size: 20px;
  color: var(--text-gray);
  margin: 0;
}
.home-intro .video-wrap {
  width: 100%;
  max-width: var(--content-w);
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  background: var(--blue-dark);
  aspect-ratio: 16/9;
}
.home-intro video,
.home-intro .video-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.home-intro .video-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-mid) 100%);
  color: var(--white);
  font-size: 18px;
}

/* ===================================
   首页 Banner 自定义控件
   =================================== */
.home-carousel .carousel-ctrl {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 50px; height: 50px;
  border-radius: 10px;
  background: rgba(0,0,0,.5);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.home-carousel .carousel-ctrl-prev { left: 160px; }
.home-carousel .carousel-ctrl-next { right: 160px; }
.home-carousel .carousel-dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}
.home-carousel .carousel-dots .dot {
  width: 50px; height: 5px;
  border-radius: 6px;
  background: rgba(216,216,216,0.7);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: background .3s;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.25);
}
.home-carousel .carousel-dots .dot.active {
  background: var(--blue-mid);
  box-shadow: 0 0 0 1px rgba(30,80,174,0.4);
}

/* ===================================
   首页 - 产品中心区（设计稿固定布局）
   =================================== */
.home-product {
  padding: 80px 0;
  background: var(--bg-gray);
}
.section-head {
  text-align: center;
  margin-bottom: 50px;
}
.section-head h2 {
  font-size: clamp(24px, 2.5vw, 40px);
  font-weight: 600;
  color: var(--text-dark);
  margin: 0 0 10px;
}
.section-head p {
  font-size: 20px;
  color: var(--text-gray);
  margin: 0;
}

/* 产品区两列布局 */
.prod-layout {
  display: flex;
  gap: 20px;
  height: 600px;
}

/* 左：产品图册大卡 */
.prod-catalog {
  flex: 0 0 740px;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  background: var(--blue-dark);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  cursor: pointer;
  text-decoration: none;
}
.prod-catalog-bg {
  position: absolute;
  inset: 0;
  background: url('/uploads/image/20260429/prod_catalog_bg.jpg') center/cover no-repeat;
}
.prod-catalog-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(31,63,138,0.75) 0%, rgba(30,80,174,0.55) 100%);
}
.prod-catalog-footer {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 25px 30px;
  background: linear-gradient(180deg, rgba(31,63,138,0) 0%, #1F3F8A 100%);
}
.prod-catalog-title {
  font-size: 24px;
  font-weight: 500;
  color: var(--white);
}
.btn-detail {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 18px;
  color: var(--white);
}

/* 右：能力卡片列 */
.prod-caps {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.prod-cap-card {
  flex: 1;
  border-radius: 12px;
  background: var(--white);
  overflow: hidden;
  display: flex;
  position: relative;
}
.prod-cap-body {
  flex: 1;
  padding: 40px 40px 40px 40px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
.prod-cap-body.prod-cap-body--right {
  padding-left: 40px;
}
.prod-cap-body h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-dark);
  margin: 0 0 20px;
}
.prod-cap-body p {
  font-size: 16px;
  color: var(--text-dark);
  line-height: 1.9;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.prod-cap-img {
  flex: 0 0 290px;
  background: center/cover no-repeat;
}
.prod-cap-img--tr {
  border-radius: 0 12px 12px 0;
  background-image: url('/uploads/image/20260429/prod_cap_production.png');
}
.prod-cap-img--bl {
  border-radius: 12px 0 0 12px;
  background-image: url('/uploads/image/20260429/prod_cap_quality.png');
}

/* ===================================
   首页 - 新闻资讯区（3列布局）
   =================================== */
.home-news {
  padding: 80px 0;
  background: var(--white);
}
.home-news .section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
}
.home-news .section-header h2 {
  font-size: clamp(24px, 2.5vw, 40px);
  font-weight: 600;
  color: var(--text-dark);
  margin: 0 0 6px;
}
.news-sub {
  font-size: 20px;
  color: var(--blue-dark);
  margin: 0 0 6px;
}
.btn-all-news {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--red);
  color: var(--white);
  border-radius: 96px;
  padding: 0 24px;
  height: 54px;
  font-size: 20px;
  white-space: nowrap;
  transition: opacity .2s;
}
.btn-all-news:hover { opacity: .88; color: var(--white); }

/* 新闻三列网格：650 + 290 + 520 = 1500, gaps=20px */
.news-grid {
  display: grid;
  grid-template-columns: 650px 290px 1fr;
  gap: 20px;
  height: 450px;
}

/* 公共：暗蓝图片卡 */
.news-big, .news-mid {
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  background: var(--blue-dark);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  cursor: pointer;
  text-decoration: none;
}
.news-big img, .news-mid img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .4;
}
.news-big-body, .news-mid-body {
  position: relative;
  z-index: 1;
  padding: 24px 30px;
  color: var(--white);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.news-date  { font-size: 14px; color: rgba(255,255,255,.85); }
.news-title { font-size: 22px; font-weight: 600; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-summary { font-size: 14px; opacity: .85; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-mid .news-title { font-size: 18px; }

.btn-more-sm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--blue-dark);
  color: var(--white);
  font-size: 14px;
  padding: 8px 14px;
  border-radius: 3px;
  border: 0.5px solid rgba(255,255,255,.6);
  width: fit-content;
  transition: opacity .2s;
}
.btn-more-sm:hover { opacity: .85; color: var(--white); }

/* 右列：两个小卡叠放 */
.news-col-right {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.news-sm {
  flex: 1;
  border-radius: 12px;
  background: var(--bg-gray);
  padding: 30px 40px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 12px;
  cursor: pointer;
  text-decoration: none;
  transition: box-shadow .2s;
}
.news-sm:hover { box-shadow: 0 4px 16px rgba(0,0,0,.1); }
.news-sm .news-date  { font-size: 14px; color: var(--text-dark); }
.news-sm .news-title { font-size: 19px; font-weight: 600; color: var(--text-dark); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-sm .news-summary { font-size: 14px; color: var(--text-gray); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.empty-tip { text-align: center; color: var(--text-gray); padding: 40px 0; }

/* ===================================
   关于我们页
   =================================== */
.about-intro {
  padding: 80px 0 60px;
}
.about-intro .row { display: flex; gap: 60px; align-items: flex-start; }
.about-intro .text-side { flex: 1; min-width: 0; }
.about-intro .text-side .sub { font-size: 20px; color: var(--blue-dark); margin-bottom: 12px; }
.about-intro .text-side h2  { font-size: 32px; font-weight: 600; margin-bottom: 24px; }
.about-intro .text-side .body { font-size: 18px; color: var(--text-dark); line-height: 2; }
.about-intro .img-side { flex: 0 0 auto; width: 750px; max-width: 50%; }
.about-intro .img-side img { width: 100%; border-radius: 12px; }

.about-slogan {
  background: var(--blue-dark);
  padding: 50px 0;
  text-align: center;
}
.about-slogan p {
  font-size: clamp(24px, 2.5vw, 48px);
  color: var(--white);
  margin: 0;
  letter-spacing: 4px;
}

.about-sub {
  padding: 60px 0 80px;
}
.about-sub .row { display: flex; gap: 60px; align-items: center; }
.about-sub .img-side { flex: 0 0 auto; width: 624px; max-width: 45%; }
.about-sub .img-side img { width: 100%; border-radius: 12px; }
.about-sub .text-side { flex: 1; min-width: 0; font-size: 18px; color: var(--text-dark); line-height: 2; }

/* ===================================
   新闻列表页
   =================================== */
.news-list-page {
  padding: 60px 0 80px;
}
.news-list-item {
  display: flex;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid #eee;
  cursor: pointer;
  transition: background .15s;
}
.news-list-item:hover { background: var(--bg-gray); margin: 0 -16px; padding: 32px 16px; }
.news-list-item .item-img {
  flex: 0 0 auto;
  width: 440px;
  height: 250px;
  border-radius: 8px;
  object-fit: cover;
  background: var(--bg-gray);
}
.news-list-item .item-img-placeholder {
  flex: 0 0 auto;
  width: 440px;
  height: 250px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-mid) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 24px;
}
.news-list-item .item-body  { flex: 1; display: flex; flex-direction: column; justify-content: space-between; }
.news-list-item .item-date  { font-size: 16px; color: var(--text-light); }
.news-list-item .item-title { font-size: 22px; font-weight: 600; color: var(--text-dark); margin: 12px 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-list-item .item-summary { font-size: 16px; color: var(--text-gray); flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* ===================================
   新闻详情页
   =================================== */
.news-detail-page {
  padding: 60px 0 80px;
}
.news-detail-page .article-title {
  font-size: clamp(22px, 2.5vw, 40px);
  font-weight: 600;
  color: var(--text-dark);
  text-align: center;
  max-width: 860px;
  margin: 0 auto 20px;
}
.news-detail-page .article-meta {
  text-align: center;
  font-size: 18px;
  color: var(--text-dark);
  margin-bottom: 40px;
}
.news-detail-page .article-content {
  font-size: 18px;
  line-height: 2;
  color: var(--text-dark);
}
.news-detail-page .article-content img { max-width: 100%; height: auto; margin: 24px auto; border-radius: 8px; }
.news-detail-page .article-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid #eee;
  font-size: 16px;
}
.news-detail-page .article-nav a { color: var(--blue-mid); }
.news-detail-page .article-nav a:hover { text-decoration: underline; }

/* ===================================
   产品应用领域页
   =================================== */
.application-page {
  padding: 60px 0 80px;
}
.application-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.application-card {
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s;
}
.application-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
}
.application-card .card-img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  background: var(--bg-gray);
}
.application-card .card-img-placeholder {
  width: 100%;
  height: 300px;
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-mid) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 48px;
}
.application-card .card-info {
  padding: 16px 20px;
  background: var(--bg-gray);
}
.application-card .card-info h3 { font-size: 18px; font-weight: 600; color: var(--text-dark); margin: 0 0 6px; }
.application-card .card-info p  { font-size: 14px; color: var(--text-gray); margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ===================================
   产品中心页
   =================================== */
.product-page {
  padding: 60px 0 80px;
}
.product-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 8px 22px;
  border-radius: 40px;
  border: 1px solid #ddd;
  background: var(--white);
  color: var(--text-dark);
  font-size: 15px;
  cursor: pointer;
  transition: all .2s;
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--blue-mid);
  border-color: var(--blue-mid);
  color: var(--white);
}

/* ===================================
   联系我们页
   =================================== */
.contact-page {
  padding: 60px 0 80px;
}
.contact-layout {
  display: flex;
  gap: 48px;
}
.contact-info {
  flex: 0 0 auto;
  width: 380px;
}
.contact-info .info-section { margin-bottom: 40px; }
.contact-info .info-section h3 { font-size: 20px; font-weight: 600; color: var(--text-dark); margin-bottom: 16px; }
.contact-info .info-section p  { font-size: 18px; color: var(--text-dark); margin: 0 0 8px; line-height: 2; }
.contact-map { flex: 1; border-radius: 8px; overflow: hidden; min-height: 440px; background: var(--blue-mid); }
.contact-map img { width: 100%; height: 100%; object-fit: cover; }

/* ===================================
   分页组件
   =================================== */
.pagination-wrap {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 60px;
  flex-wrap: wrap;
}
.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 4px;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid var(--blue-mid);
  color: var(--blue-mid);
  background: var(--white);
  transition: all .2s;
}
.page-btn:hover,
.page-btn.active {
  background: var(--blue-mid);
  color: var(--white);
}
.page-btn.disabled { opacity: .4; pointer-events: none; }

/* ===================================
   Footer
   =================================== */
.site-footer {
  background: var(--blue-dark);
  min-height: 148px;
  display: flex;
  align-items: center;
}
.site-footer .footer-inner {
  max-width: 1920px;
  width: 100%;
  margin: 0 auto;
  padding: 0 210px;
  display: flex;
  align-items: center;
  gap: 40px;
}
.footer-logo svg { flex-shrink: 0; }
.footer-text {
  flex: 1;
  text-align: center;
  color: var(--white);
  font-size: 17px;
  line-height: 2;
}
.footer-text p { margin: 0; }
.site-footer a { color: var(--white); }
.site-footer a:hover { text-decoration: underline; }
.footer-qrcodes {
  display: flex;
  gap: 20px;
  flex-shrink: 0;
}
.qr-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.qr-item img {
  width: 79px;
  height: 79px;
  object-fit: cover;
}
.qr-item span {
  font-size: 14px;
  color: var(--white);
}

/* 右侧悬浮联系面板 */
.side-contact {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 500;
  background: var(--white);
  border-radius: 12px 0 0 12px;
  padding: 20px 15px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  box-shadow: -2px 0 12px rgba(0,0,0,.12);
}
.side-contact img {
  width: 79px;
  height: 79px;
  object-fit: cover;
}
.side-contact p {
  margin: 0;
  font-size: 12px;
  color: var(--blue-mid);
  text-align: center;
}

/* ===================================
   响应式断点
   =================================== */
@media (max-width: 1280px) {
  .site-nav .inner { padding: 0 40px; }
  .content-wrap { padding: 0 40px; }
}

@media (max-width: 1024px) {
  :root { --content-w: 100%; }
  .site-nav .inner { padding: 0 24px; }
  .content-wrap { padding: 0 24px; }

  .nav-menu { display: none; flex-direction: column; position: absolute; top: var(--nav-h); left: 0; right: 0; background: var(--white); box-shadow: 0 4px 12px rgba(0,0,0,.1); z-index: 100; padding: 8px 0; }
  .nav-menu.show { display: flex; }
  .nav-menu li a { height: auto; line-height: 2; padding: 10px 24px; }
  .nav-menu li a.active::after { display: none; }
  .nav-toggle { display: flex; }
  .nav-phone  { display: none; }

  .home-carousel .carousel-ctrl-prev { left: 16px; }
  .home-carousel .carousel-ctrl-next { right: 16px; }

  .prod-layout { flex-direction: column; height: auto; }
  .prod-catalog { flex: none; height: 300px; }
  .prod-caps { gap: 16px; }

  .news-grid { grid-template-columns: 1fr; height: auto; }
  .news-big, .news-mid { height: 280px; }
  .news-col-right { flex-direction: row; }
  .news-sm { min-height: 140px; }

  .application-grid { grid-template-columns: repeat(2, 1fr); }
  .about-intro .row, .about-sub .row { flex-direction: column; }
  .about-intro .img-side, .about-sub .img-side { width: 100%; max-width: 100%; }

  .site-footer .footer-inner { padding: 0 24px; }
}

@media (max-width: 768px) {
  .page-banner { height: 180px; }
  .home-intro, .home-product, .home-news, .news-list-page, .news-detail-page,
  .application-page, .product-page, .contact-page { padding: 40px 0; }
  .section-head h2 { font-size: 22px; }

  .prod-cap-card { flex-direction: column; }
  .prod-cap-img { flex: none; height: 180px; border-radius: 0 !important; }
  .prod-cap-body, .prod-cap-body--right { padding: 20px; }

  .news-col-right { flex-direction: column; }
  .news-sm { min-height: auto; }

  .news-list-item { flex-direction: column; }
  .news-list-item .item-img,
  .news-list-item .item-img-placeholder { width: 100%; height: 200px; }

  .contact-layout { flex-direction: column; }
  .contact-info   { width: 100%; }
  .contact-map    { min-height: 260px; }

  .site-footer .footer-inner { flex-direction: column; padding: 30px 20px; gap: 20px; text-align: center; }
  .footer-text { font-size: 14px; }
  .side-contact { display: none; }

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

@media (max-width: 480px) {
  .content-wrap { padding: 0 16px; }
  .news-title { font-size: 16px !important; }
  .application-grid { grid-template-columns: 1fr; }
}

/* ===================================
   产品中心 - 轮播展示（设计稿还原）
   =================================== */
.product-showcase {
  padding: 60px 0 80px;
  background: #fff;
}
.product-showcase-inner {
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 210px;
  position: relative;
}
.prod-carousel {
  position: relative;
}
.prod-carousel-viewport {
  overflow: hidden;
  border-radius: 4px;
}
.prod-carousel-track {
  display: flex;
  transition: transform 0.45s cubic-bezier(.4,0,.2,1);
}
.prod-slide {
  flex: 0 0 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #f5f7fa;
}
.prod-slide img {
  width: 100%;
  max-height: 680px;
  object-fit: contain;
  display: block;
}
.prod-slide-placeholder {
  width: 100%;
  height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-gray);
}
/* 箭头按钮 */
.prod-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  border-radius: 10px;
  background: rgba(0,0,0,0.45);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s;
  z-index: 10;
}
.prod-arrow:hover { background: rgba(0,0,0,0.65); }
.prod-arrow svg { width: 26px; height: 26px; }
.prod-arrow-prev { left: -90px; }
.prod-arrow-next { right: -90px; }
/* 指示点 */
.prod-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 28px;
}
.prod-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #d0d5de;
  cursor: pointer;
  transition: background .2s, transform .2s;
}
.prod-dot.active {
  background: var(--blue-mid);
  transform: scale(1.3);
}
.prod-empty {
  text-align: center;
  color: var(--text-gray);
  padding: 80px 0;
}

@media (max-width: 1200px) {
  .product-showcase-inner { padding: 0 80px; }
  .prod-arrow-prev { left: -60px; }
  .prod-arrow-next { right: -60px; }
}
@media (max-width: 768px) {
  .product-showcase-inner { padding: 0 60px; }
  .prod-arrow { width: 36px; height: 36px; }
  .prod-arrow-prev { left: -48px; }
  .prod-arrow-next { right: -48px; }
  .prod-slide img { max-height: 340px; }
}

/* 图片懒加载淡入 */
img.lazy-fade { opacity: 0; transition: opacity 0.5s ease; }
img.lazy-fade.loaded { opacity: 1; }