/* ============================================================
   蓝色工业风覆盖 —— 仅改配色与纹理，保留主题原有布局
   ============================================================ */
:root{
  --primary-color:#15529e;
  --primary-dark:#0d3a72;
  --secondary-color:#0b2545;
  --accent-color:#ff8a00;
  --text-dark:#1b2a3d;
  --text-light:#5d6d80;
  --bg-light:#f2f6fb;
  --border-color:#dbe5f0;
}
.main-header{background:linear-gradient(90deg,#081c36 0%,#0b2545 55%,#123f7d 100%);box-shadow:0 2px 14px rgba(6,24,48,.28);border-bottom:1px solid rgba(120,175,255,.18)}
/* 页眉文字对比度：全部提亮，避免深底深字看不清 */
.main-header .nav-menu li>a,.main-header .nav-menu a{color:#dce8f8!important;text-shadow:0 1px 2px rgba(0,0,0,.35)}
.main-header .nav-menu li>a:hover,.main-header .nav-menu a:hover,.main-header .nav-menu li>a:focus{color:#fff!important;background:rgba(255,255,255,.12)!important}
.main-header .nav-menu li.active>a{color:#fff!important;background:rgba(255,255,255,.14)!important;box-shadow:inset 0 -2px 0 #ff8a00}
.logo a{color:#fff!important;letter-spacing:1px}
.logo a:hover{color:#fff!important}
.logo i{color:#4d9bff}
/* 语言切换：深色页眉上改用浅色描边 + 橙色高亮 */
.main-header .lang-switch{border-left:1px solid rgba(255,255,255,.22)!important}
.main-header .lang-switch a{color:#dce8f8!important;border:1px solid rgba(255,255,255,.38)!important;background:rgba(255,255,255,.07);font-weight:600}
.main-header .lang-switch a:hover{color:#fff!important;border-color:#fff!important;background:rgba(255,255,255,.18)!important}
.main-header .lang-switch a.active{background:var(--accent-color)!important;border-color:var(--accent-color)!important;color:#fff!important;box-shadow:0 4px 12px rgba(255,138,0,.35)}
.mobile-lang-switch a{color:#dce8f8!important;border:1px solid rgba(255,255,255,.38)!important;background:rgba(255,255,255,.07);font-weight:600}
.mobile-lang-switch a.active{background:var(--accent-color)!important;border-color:var(--accent-color)!important;color:#fff!important}
.mobile-menu-btn span{background:#fff!important}

/* Hero：深蓝工业底 + 细网格纹理 */
.hero-section{
  background:#0a2444;
  background-image:
    radial-gradient(900px 380px at 85% -10%,rgba(77,155,255,.35),transparent 62%),
    radial-gradient(700px 340px at 5% 115%,rgba(21,82,158,.55),transparent 62%),
    linear-gradient(120deg,#071a30 0%,#0b2545 48%,#123f7d 100%);
  position:relative;overflow:hidden;
}
.hero-section::before{
  content:'';position:absolute;inset:0;z-index:0;
  background-image:
    linear-gradient(rgba(120,175,255,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,175,255,.07) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.95),rgba(0,0,0,.28));
  mask-image:linear-gradient(180deg,rgba(0,0,0,.95),rgba(0,0,0,.28));
}
.hero-content{max-width:820px}
.hero-content h1{text-shadow:0 4px 24px rgba(0,0,0,.35)}
.hero-content p{color:#c6dcf8}
.hero-btn{background:var(--accent-color);box-shadow:0 10px 26px rgba(255,138,0,.32)}
.hero-btn:hover{background:#ff9d26}

/* 内页头部 */
.page-header{background:linear-gradient(120deg,#071a30 0%,#0b2545 48%,#123f7d 100%)}
.page-header::before{
  content:'';position:absolute;inset:0;z-index:0;
  background-image:
    linear-gradient(rgba(120,175,255,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,175,255,.07) 1px,transparent 1px);
  background-size:56px 56px;
  background-color:transparent;
}

/* 版块标题加工业风短横线 */
.section-title h2{position:relative;display:inline-block;padding-bottom:16px}
.section-title h2::after{
  content:'';position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:58px;height:4px;background:linear-gradient(90deg,var(--primary-color),#4d9bff);border-radius:3px;
}

/* 产品分类卡片封面（无图时） */
.img-placeholder{background:linear-gradient(135deg,#0b2545 0%,#15529e 100%)!important;color:rgba(255,255,255,.9)!important}

/* 认证图标 */
.certificate-icon{background:linear-gradient(135deg,var(--primary-color),#4d9bff);color:#fff}
.certificate-card:hover{border-color:var(--primary-color)}

/* 页脚 */
.site-footer{background:#071a30;color:#93a9c4}
.site-footer h4{color:#fff}
.site-footer a{color:#93a9c4}
.site-footer a:hover{color:#fff}
.social-links a{background:rgba(255,255,255,.1)}
.social-links a:hover{background:var(--primary-color)}
.footer-bottom{border-top:1px solid rgba(120,175,255,.14);color:#7f96b3}

/* 产品/新闻标题颜色 */
.product-info h3{color:var(--text-dark)}
.product-info h3:hover,.product-link{color:var(--primary-color)}
.news-title a{color:var(--text-dark)}
.category-list li.active a,.category-list a:hover{color:var(--primary-color)}

/* 产品详情 */
.product-info-detail h1{color:var(--secondary-color)}
.product-price{background:#eef4fc}
.price-value{color:var(--primary-color)}
.btn-view{background:var(--accent-color)}

/* 图库 */
.gallery-thumb.active,.gallery-thumb:hover{border-color:var(--primary-color)}

/* 工厂展示卡片 */
.eq-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.eq-card{background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s}
.eq-card:hover{transform:translateY(-8px);box-shadow:0 15px 40px rgba(0,0,0,.15)}
.eq-card .eq-img{height:230px;overflow:hidden;background:linear-gradient(135deg,#0b2545,#15529e)}
.eq-card .eq-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.eq-card:hover .eq-img img{transform:scale(1.06)}
.eq-card h3{padding:18px 22px;font-size:17px;color:var(--text-dark)}

/* 数据条 */
.stat-band{background:#fff;border-radius:10px;box-shadow:0 4px 15px rgba(0,0,0,.08);display:grid;grid-template-columns:repeat(4,1fr);margin-top:-60px;position:relative;z-index:5}
.stat-band .item{padding:28px 12px;text-align:center;border-right:1px solid var(--border-color)}
.stat-band .item:last-child{border-right:0}
.stat-band .num{font-size:34px;font-weight:700;color:var(--primary-color);font-family:Arial,sans-serif}
.stat-band .num small{font-size:14px;font-weight:400;color:var(--text-light);margin-left:2px}
.stat-band p{color:var(--text-light);font-size:14px}

/* 分类区块 */
.cat-block{margin-bottom:60px}
.cat-block:last-child{margin-bottom:0}
.cat-head{border-left:5px solid var(--primary-color);padding-left:16px;margin-bottom:12px}
.cat-head h2{font-size:26px;color:var(--secondary-color)}
.cat-head span{font-size:13px;color:#4d9bff;letter-spacing:2px;text-transform:uppercase}
.cat-desc{color:var(--text-light);line-height:1.9;margin-bottom:28px;text-align:justify}

/* 文章正文 */
.article-wrap{background:#fff;border-radius:10px;box-shadow:0 4px 15px rgba(0,0,0,.08);padding:50px 56px;max-width:900px;margin:0 auto}
.article-wrap h1{font-size:30px;color:var(--secondary-color);line-height:1.5;margin-bottom:16px}
.article-meta{color:var(--text-light);font-size:14px;padding-bottom:22px;border-bottom:1px solid var(--border-color);margin-bottom:28px}
.article-meta b{color:var(--primary-color)}
.article-body p{color:#33445c;font-size:16px;line-height:2;margin-bottom:16px;text-align:justify}
.article-body h3{color:var(--secondary-color);font-size:19px;margin:26px 0 12px}
.article-foot{margin-top:36px;padding-top:20px;border-top:1px solid var(--border-color);display:flex;justify-content:space-between;font-size:14px}
.article-foot a{color:var(--primary-color)}

/* ============ 分类筛选标签（产品/新闻页，减少下拉浏览） ============ */
.filter-bar{
  position:sticky;top:68px;z-index:80;background:rgba(255,255,255,.97);
  border:1px solid var(--border-color);border-radius:10px;
  padding:12px 14px;margin-bottom:30px;display:flex;flex-wrap:wrap;gap:10px;
  box-shadow:0 6px 18px rgba(11,37,69,.08);backdrop-filter:blur(6px);
}
.filter-bar .filter-label{font-size:13px;color:var(--text-light);display:flex;align-items:center;gap:6px;padding-right:6px;border-right:1px solid var(--border-color);margin-right:2px}
.filter-tab{
  border:1px solid var(--border-color);background:#fff;color:var(--text-dark);
  font-size:14px;padding:8px 16px;border-radius:20px;cursor:pointer;
  transition:all .2s;font-family:inherit;display:inline-flex;align-items:center;gap:6px;
}
.filter-tab span.count{font-size:12px;color:#8a99ad;font-weight:400}
.filter-tab:hover{border-color:var(--primary-color);color:var(--primary-color)}
.filter-tab.active{background:var(--primary-color);border-color:var(--primary-color);color:#fff;box-shadow:0 6px 16px rgba(21,82,158,.28)}
.filter-tab.active span.count{color:rgba(255,255,255,.8)}
.cat-block[hidden]{display:none!important}
.news-card[hidden]{display:none!important}
.load-more-wrap{text-align:center;margin-top:34px}
.load-more-btn{
  background:#fff;border:1px solid var(--primary-color);color:var(--primary-color);
  padding:12px 32px;border-radius:26px;font-size:15px;cursor:pointer;font-family:inherit;transition:all .2s;
}
.load-more-btn:hover{background:var(--primary-color);color:#fff}
.load-more-btn .fa-chevron-down{margin-left:6px;font-size:12px}
.cat-more{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-top:26px;padding:16px 22px;border-radius:10px;background:linear-gradient(90deg,#f2f7fd,#eaf2fc);font-size:14px;color:var(--text-light)}
.cat-more button{
  background:var(--primary-color);border:0;color:#fff;cursor:pointer;font-size:14px;font-family:inherit;
  padding:11px 24px;border-radius:24px;box-shadow:0 8px 18px rgba(21,82,158,.25);transition:all .2s;
  display:inline-flex;align-items:center;gap:8px;
}
.cat-more button:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 12px 24px rgba(21,82,158,.32)}
.cat-more button i{font-size:12px}

/* 移动端 */
@media (max-width:768px){
  .stat-band{grid-template-columns:repeat(2,1fr);margin-top:-40px}
  .stat-band .item:nth-child(2){border-right:0}
  .eq-grid{grid-template-columns:1fr}
  .article-wrap{padding:28px 20px}
  .article-wrap h1{font-size:23px}
  .filter-bar{top:60px;padding:10px;gap:8px}
  .filter-tab{padding:7px 13px;font-size:13px}
}
/* 手机/平板下拉菜单也要深底浅字，否则文字看不清 */
@media (max-width:1024px){
  .nav-menu{background:#0b2545!important;box-shadow:0 18px 34px rgba(4,16,32,.45)!important;border-top:1px solid rgba(120,175,255,.2)}
  .nav-menu li>a,.nav-menu li a{color:#dce8f8!important;border-bottom:1px solid rgba(120,175,255,.16)!important}
  .nav-menu li>a:hover,.nav-menu li a:hover{background:rgba(120,175,255,.16)!important;color:#fff!important}
  .nav-menu li.active>a{background:rgba(255,138,0,.9)!important;color:#fff!important}
}