/* =============================================
   潍坊赛莱恩通风设备有限公司 - 全局样式
   PC端优先，宽度1200px居中
   ============================================= */

/* === Reset & Variables === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --c-primary:#14496c;
  --c-primary2:#1d6fa5;
  --c-primary-dark:#0d2f48;
  --c-accent:#e85d04;
  --c-accent2:#f48c06;
  --c-text:#222;
  --c-text2:#666;
  --c-text3:#999;
  --c-line:#e0e4e8;
  --c-bg:#fff;
  --c-bg2:#f5f7fa;
  --c-bg3:#eef2f7;
  --w:1200px;
  --header-h:88px;
  --topbar-h:34px;
}
html{scroll-behavior:smooth}
body{
  font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;
  color:var(--c-text);
  background:var(--c-bg);
  font-size:14px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
img{max-width:100%;display:block;height:auto}
.container{max-width:var(--w);margin:0 auto;padding:0 20px}

/* === Top Bar === */
.topbar{
  background:var(--c-primary-dark);
  color:#b8c6d6;
  font-size:12px;
  height:var(--topbar-h);
  line-height:var(--topbar-h);
}
.topbar-inner{
  max-width:var(--w);
  margin:0 auto;
  padding:0 20px;
  display:flex;
  justify-content:space-between;
  align-items:center;
}
.topbar-left{display:flex;gap:24px;align-items:center}
.topbar-left span{display:inline-flex;align-items:center;gap:5px}
.topbar-left svg{width:13px;height:13px;opacity:.7}
.topbar-right{display:flex;gap:18px}
.topbar a{transition:color .2s}
.topbar a:hover{color:#fff}

/* === Header === */
.header{
  background:#fff;
  box-shadow:0 2px 12px rgba(0,0,0,.06);
  position:sticky;
  top:0;
  z-index:1000;
}
.header-inner{
  max-width:var(--w);
  margin:0 auto;
  padding:0 20px;
  display:flex;
  align-items:center;
  height:var(--header-h);
}
/* Logo */
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0;margin-right:40px}
.logo-img{width:60px;height:60px;object-fit:contain;background:transparent;padding:0;border-radius:0}
.logo-icon{
  width:48px;height:48px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary2));
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:24px;
}
.logo-text .cn{display:block;font-size:20px;font-weight:700;color:var(--c-primary);line-height:1.2}
.logo-text .en{display:block;font-size:11px;color:var(--c-text2);letter-spacing:1px;text-transform:uppercase}

/* Nav */
.main-nav{display:flex;align-items:center;gap:0;flex:1}
.main-nav>li{position:relative}
.main-nav>li>a{
  display:flex;align-items:center;gap:4px;
  padding:0 20px;height:var(--header-h);
  font-size:15px;font-weight:500;color:var(--c-text);
  transition:color .2s;
  white-space:nowrap;
}
.main-nav>li>a:hover,
.main-nav>li.active>a{color:var(--c-primary)}
.main-nav>li>a .arrow{font-size:10px;color:var(--c-text3);transition:transform .2s}
.main-nav>li:hover>a .arrow{transform:rotate(180deg)}

/* Dropdown Menu */
.submenu{
  position:absolute;top:var(--header-h);left:0;
  min-width:180px;
  background:#fff;
  box-shadow:0 8px 30px rgba(0,0,0,.12);
  border-radius:0 0 8px 8px;
  padding:8px 0;
  display:none;
  z-index:100;
  border-top:3px solid var(--c-primary);
}
.main-nav>li:hover>.submenu{display:block;animation:dropIn .2s ease}
@keyframes dropIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.submenu li a{
  display:block;
  padding:10px 20px;
  font-size:14px;color:var(--c-text2);
  transition:all .2s;
  white-space:nowrap;
}
.submenu li a:hover{
  background:var(--c-bg2);
  color:var(--c-primary);
  padding-left:26px;
}
/* Mega menu for products */
.mega-menu{
  position:absolute;top:var(--header-h);left:-40px;
  width:580px;
  background:#fff;
  box-shadow:0 8px 30px rgba(0,0,0,.12);
  border-radius:0 0 8px 8px;
  padding:20px;
  display:none;
  z-index:100;
  border-top:3px solid var(--c-primary);
}
.main-nav>li:hover>.mega-menu{display:block;animation:dropIn .2s ease}
.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.mega-item{
  display:flex;align-items:flex-start;gap:12px;
  padding:12px 14px;border-radius:8px;
  transition:background .2s;
}
.mega-item:hover{background:var(--c-bg2)}
.mega-item .mi{
  width:40px;height:40px;border-radius:8px;
  background:var(--c-bg3);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;color:var(--c-primary);
}
.mega-item .mi svg{width:20px;height:20px}
.mega-item .mt{font-size:13px;font-weight:600;color:var(--c-text)}
.mega-item .md{font-size:11px;color:var(--c-text3);margin-top:2px}

/* Header Right */
.header-right{display:flex;align-items:center;gap:16px;flex-shrink:0;margin-left:auto}
.header-phone{
  display:flex;align-items:center;gap:8px;
  padding:8px 16px;
  background:var(--c-bg2);
  border-radius:8px;
}
.header-phone svg{width:20px;height:20px;color:var(--c-accent)}
.header-phone .n{font-size:18px;font-weight:700;color:var(--c-accent)}
.header-phone .l{font-size:11px;color:var(--c-text3)}
.header-search{
  width:36px;height:36px;
  border-radius:50%;
  background:var(--c-bg2);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;
  transition:background .2s;
}
.header-search:hover{background:var(--c-bg3)}
.header-search svg{width:18px;height:18px;color:var(--c-text2)}

/* === Page Banner (inner pages) === */
.page-banner{
  background:linear-gradient(135deg,var(--c-primary-dark),var(--c-primary));
  color:#fff;
  padding:60px 0;
  text-align:center;
}
.page-banner h1{font-size:36px;font-weight:700;margin-bottom:10px}
.page-banner .breadcrumb{
  font-size:13px;
  color:rgba(255,255,255,.6);
  display:flex;justify-content:center;gap:8px;align-items:center;
}
.page-banner .breadcrumb a{color:rgba(255,255,255,.8);transition:color .2s}
.page-banner .breadcrumb a:hover{color:#fff}
.page-banner .breadcrumb .sep{color:rgba(255,255,255,.4)}

/* === Home Banner === */
.home-banner{
  position:relative;height:500px;overflow:hidden;
  background:var(--c-primary-dark);
}
.banner-slide{
  position:absolute;inset:0;opacity:0;transition:opacity .8s;
  display:flex;align-items:center;
}
.banner-slide.active{opacity:1;z-index:1}
.banner-slide .bg{position:absolute;inset:0}
.banner-slide .bg .bg-overlay{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(13,47,72,.92) 0%,rgba(13,47,72,.72) 45%,rgba(13,47,72,.42) 100%);
}
.banner-content{
  max-width:var(--w);
  margin:0 auto;
  padding:0 20px;
  position:relative;z-index:2;
  color:#fff;
}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.2);
  padding:6px 18px;border-radius:30px;
  font-size:13px;margin-bottom:24px;
}
.banner-tag .dot{width:8px;height:8px;background:var(--c-accent);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.banner-content h2{
  font-size:44px;font-weight:800;line-height:1.3;
  margin-bottom:18px;letter-spacing:1px;
}
.banner-content h2 em{color:var(--c-accent2);font-style:normal}
.banner-content .desc{
  font-size:16px;color:rgba(255,255,255,.8);
  margin-bottom:32px;max-width:540px;line-height:1.8;
}
.banner-btns{display:flex;gap:14px}
.btn-banner{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 32px;border-radius:6px;
  font-size:15px;font-weight:600;transition:all .3s;
}
.btn-banner.primary{background:var(--c-accent);color:#fff}
.btn-banner.primary:hover{background:var(--c-accent2);transform:translateY(-2px);box-shadow:0 8px 24px rgba(232,93,4,.35)}
.btn-banner.outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.45)}
.btn-banner.outline:hover{background:#fff;color:var(--c-primary);border-color:#fff}
/* Banner controls */
.banner-arrows{
  position:absolute;top:50%;transform:translateY(-50%);
  width:100%;display:flex;justify-content:space-between;
  z-index:5;padding:0 20px;pointer-events:none;
}
.banner-arrow{
  width:48px;height:48px;border-radius:50%;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.25);
  color:#fff;display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .3s;
  pointer-events:auto;
}
.banner-arrow:hover{background:var(--c-accent);border-color:var(--c-accent)}
.banner-arrow svg{width:20px;height:20px}
.banner-dots{
  position:absolute;bottom:24px;left:50%;transform:translateX(-50%);
  display:flex;gap:8px;z-index:5;
}
.banner-dot{
  width:32px;height:3px;border-radius:2px;
  background:rgba(255,255,255,.3);cursor:pointer;transition:all .3s;
}
.banner-dot.active{background:var(--c-accent);width:44px}

/* === Quick Features Strip === */
.quick-strip{
  background:#fff;
  border-bottom:1px solid var(--c-line);
}
.quick-strip .container{display:flex}
.quick-item{
  flex:1;
  display:flex;align-items:center;gap:12px;
  padding:20px 18px;
  border-right:1px solid var(--c-line);
  transition:background .2s;
}
.quick-item:last-child{border-right:none}
.quick-item:hover{background:var(--c-bg2)}
.quick-ico{
  width:44px;height:44px;border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary2));
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;color:#fff;
}
.quick-ico svg{width:22px;height:22px}
.quick-title{font-size:14px;font-weight:700;color:var(--c-text)}
.quick-desc{font-size:12px;color:var(--c-text3);margin-top:1px}

/* === Section Common === */
.section{padding:64px 0}
.section.gray{background:var(--c-bg2)}
.section.dark{background:var(--c-primary-dark);color:#fff}
.section-head{text-align:center;margin-bottom:44px}
.section-head .en{
  font-size:12px;color:var(--c-primary2);
  letter-spacing:4px;text-transform:uppercase;
  font-weight:600;margin-bottom:8px;
}
.section-head h2{font-size:32px;font-weight:700}
.section-head h2 span{color:var(--c-primary)}
.section-head .line{width:50px;height:3px;background:var(--c-accent);margin:16px auto 0;border-radius:2px}
.section-head .sub{color:var(--c-text2);margin-top:12px;font-size:14px}
.section.dark .section-head h2{color:#fff}
.section.dark .section-head h2 span{color:var(--c-accent2)}
.section.dark .section-head .sub{color:rgba(255,255,255,.5)}
.section.dark .section-head .en{color:rgba(255,255,255,.4)}

/* === Cards === */
.card-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card-grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}

/* Product Card */
.prod-card{
  background:#fff;border-radius:10px;overflow:hidden;
  box-shadow:0 2px 8px rgba(0,0,0,.05);
  transition:all .3s;
  border:1px solid var(--c-line);
}
.prod-card:hover{
  transform:translateY(-6px);
  box-shadow:0 12px 32px rgba(0,0,0,.1);
  border-color:var(--c-primary2);
}
.prod-card .img{
  height:200px;
  background:linear-gradient(135deg,var(--c-bg2),var(--c-bg3));
  display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
}
.prod-card .img .prod-img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .4s;
}
.prod-card:hover .img .prod-img{transform:scale(1.06)}
.prod-card .img .ico{
  width:64px;height:64px;border-radius:50%;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary2));
  display:flex;align-items:center;justify-content:center;
  transition:transform .4s;
}
.prod-card:hover .img .ico{transform:scale(1.1) rotate(6deg)}
.prod-card .img .ico svg{width:32px;height:32px;color:#fff}
.prod-card .badge{
  position:absolute;top:12px;left:12px;
  padding:3px 12px;border-radius:20px;
  font-size:11px;font-weight:600;color:#fff;
}
.prod-card .badge.hot{background:var(--c-accent)}
.prod-card .badge.new{background:var(--c-primary2)}
.prod-card .badge.star{background:#8b5cf6}
.prod-card .body{padding:18px 20px 20px}
.prod-card .body h3{
  font-size:16px;font-weight:700;color:var(--c-text);
  margin-bottom:8px;
}
.prod-card .body .desc{
  font-size:12px;color:var(--c-text2);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
  overflow:hidden;height:38px;
}
.prod-card .tags{
  display:flex;flex-wrap:wrap;gap:5px;margin:12px 0;
}
.prod-card .tags span{
  font-size:11px;background:var(--c-bg3);color:var(--c-primary);
  padding:2px 8px;border-radius:12px;
}
.prod-card .foot{
  display:flex;justify-content:space-between;align-items:center;
  padding-top:12px;border-top:1px solid var(--c-line);
}
.prod-card .foot .more{
  color:var(--c-primary);font-size:13px;font-weight:600;
  display:inline-flex;align-items:center;gap:4px;
}
.prod-card .foot .ask{color:var(--c-accent);font-size:13px;font-weight:600}

/* Feature Card */
.feat-card{
  background:#fff;border:1px solid var(--c-line);
  border-radius:10px;padding:28px 24px;
  transition:all .3s;
}
.feat-card:hover{
  border-color:var(--c-primary);
  box-shadow:0 8px 24px rgba(20,73,108,.08);
  transform:translateY(-4px);
}
.feat-card .fc-icon{
  width:52px;height:52px;border-radius:12px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary2));
  display:flex;align-items:center;justify-content:center;
  color:#fff;margin-bottom:18px;
}
.feat-card .fc-icon svg{width:24px;height:24px}
.feat-card h3{font-size:17px;font-weight:700;margin-bottom:10px}
.feat-card p{font-size:13px;color:var(--c-text2);line-height:1.8}

/* Advantage Card (dark bg) */
.adv-card{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  border-radius:10px;padding:28px 24px;
  transition:all .3s;
}
.adv-card:hover{
  background:rgba(255,255,255,.07);
  border-color:rgba(29,111,165,.4);
  transform:translateY(-4px);
}
.adv-card .ac-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.adv-card .ac-icon{
  width:48px;height:48px;border-radius:10px;
  background:rgba(29,111,165,.25);
  display:flex;align-items:center;justify-content:center;
  color:#5dade2;
}
.adv-card .ac-icon svg{width:24px;height:24px}
.adv-card .ac-num{font-size:36px;font-weight:800;color:rgba(255,255,255,.08)}
.adv-card h3{font-size:17px;margin-bottom:10px;font-weight:600}
.adv-card p{font-size:13px;color:rgba(255,255,255,.55);line-height:1.8}

/* === News Layout === */
.news-layout{display:grid;grid-template-columns:1fr 340px;gap:30px}
.news-main h3{font-size:20px;font-weight:700;margin-bottom:20px;color:var(--c-text)}
.news-main h3 span{color:var(--c-primary)}
.news-card{
  background:#fff;border-radius:10px;
  box-shadow:0 2px 6px rgba(0,0,0,.04);
  transition:all .3s;overflow:hidden;
}
.news-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.08)}
.news-card.featured{display:grid;grid-template-columns:260px 1fr;margin-bottom:14px}
.news-card .nc-img{
  position:relative;min-height:160px;overflow:hidden;
}
.news-card .nc-img img{width:100%;height:100%;object-fit:cover;display:block}
.news-card .nc-img svg{width:48px;height:48px;color:rgba(255,255,255,.35)}
.news-card .nc-date{
  position:absolute;bottom:10px;left:10px;
  background:rgba(255,255,255,.95);padding:3px 10px;
  border-radius:20px;font-size:12px;color:var(--c-primary);font-weight:600;
}
.news-card .nc-body{padding:20px 24px}
.news-card .nc-body h4{font-size:16px;font-weight:600;margin-bottom:8px;line-height:1.5}
.news-card .nc-body p{
  font-size:13px;color:var(--c-text2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card .nc-body .read{
  margin-top:12px;font-size:13px;color:var(--c-primary);font-weight:600;
  display:inline-flex;align-items:center;gap:4px;
}
/* News list page v2: hot + list */
.section-title{
  font-size:22px;font-weight:700;color:var(--c-text);
  margin-bottom:20px;display:flex;align-items:center;gap:10px;
}
.section-title i{
  display:inline-block;width:5px;height:22px;
  background:var(--c-primary);border-radius:3px;
}
.hot-section{margin-bottom:44px}
.hot-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.hot-card{
  background:#fff;border-radius:10px;overflow:hidden;
  box-shadow:0 2px 8px rgba(0,0,0,.05);transition:all .3s;
  text-decoration:none;display:flex;flex-direction:column;
}
.hot-card:hover{box-shadow:0 12px 28px rgba(0,0,0,.1);transform:translateY(-4px)}
.hot-img{
  position:relative;height:180px;overflow:hidden;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary2));
}
.hot-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.hot-card:hover .hot-img img{transform:scale(1.05)}
.hot-date{
  position:absolute;bottom:10px;left:10px;
  background:rgba(255,255,255,.95);padding:3px 10px;
  border-radius:20px;font-size:12px;color:var(--c-primary);font-weight:600;
}
.hot-body{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column}
.hot-cat{
  display:inline-block;font-size:12px;color:var(--c-primary);
  background:rgba(20,73,108,.08);padding:2px 10px;border-radius:20px;
  margin-bottom:10px;align-self:flex-start;
}
.hot-body h4{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:10px;color:var(--c-text)}
.hot-body p{
  font-size:13px;color:var(--c-text2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-top:auto;
}
.news-section{margin-top:40px}
.news-list{display:flex;flex-direction:column;gap:14px}
.news-list-item{
  display:grid;grid-template-columns:1fr;
  background:#fff;border-radius:10px;overflow:hidden;
  box-shadow:0 2px 6px rgba(0,0,0,.04);transition:all .3s;
  text-decoration:none;
}
.news-list-item.has-img{grid-template-columns:260px 1fr}
.news-list-item:hover{box-shadow:0 8px 24px rgba(0,0,0,.08)}
.nl-img{height:160px;overflow:hidden;background:linear-gradient(135deg,var(--c-primary),var(--c-primary2))}
.nl-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.news-list-item:hover .nl-img img{transform:scale(1.05)}
.nl-body{padding:20px 24px;display:flex;flex-direction:column}
.nl-body h4{font-size:17px;font-weight:600;margin-bottom:10px;line-height:1.5;color:var(--c-text)}
.nl-body p{
  font-size:14px;color:var(--c-text2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:12px;
}
.nl-date{font-size:13px;color:var(--c-primary);font-weight:600}
/* News list item */
.news-item{
  background:#fff;border-radius:8px;
  padding:16px 20px;margin-bottom:10px;
  display:flex;justify-content:space-between;align-items:center;
  gap:16px;box-shadow:0 2px 4px rgba(0,0,0,.03);
  transition:all .2s;
}
.news-item:hover{box-shadow:0 4px 12px rgba(0,0,0,.06);transform:translateX(3px)}
.news-item .ni-thumb{width:80px;height:60px;flex-shrink:0;border-radius:6px;overflow:hidden}
.news-item .ni-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.news-item .ni-date{
  text-align:center;flex-shrink:0;width:52px;
  border-right:1px solid var(--c-bg3);padding-right:14px;
}
.news-item .ni-date .d{font-size:22px;font-weight:700;color:var(--c-primary);line-height:1}
.news-item .ni-date .m{font-size:11px;color:var(--c-text3)}
.news-item .ni-body{flex:1;min-width:0}
.news-item .ni-body h4{
  font-size:14px;color:var(--c-text);font-weight:500;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.news-item .ni-body p{
  font-size:12px;color:var(--c-text3);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
/* News Sidebar */
.news-side .side-box{
  background:#fff;border-radius:10px;
  padding:22px;margin-bottom:16px;
  box-shadow:0 2px 6px rgba(0,0,0,.04);
}
.side-box h4{
  font-size:15px;font-weight:700;color:var(--c-text);
  margin-bottom:16px;padding-bottom:12px;
  border-bottom:2px solid var(--c-bg3);
}
.side-box h4 span{color:var(--c-primary)}
.side-contact .sc-item{
  display:flex;gap:10px;align-items:flex-start;margin-bottom:14px;
}
.side-contact .sc-item:last-child{margin-bottom:0}
.side-contact .sc-ico{
  width:34px;height:34px;border-radius:8px;
  background:var(--c-bg3);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;color:var(--c-primary);
}
.side-contact .sc-ico svg{width:16px;height:16px}
.side-contact .sc-l{font-size:11px;color:var(--c-text3);margin-bottom:2px}
.side-contact .sc-v{font-size:14px;color:var(--c-text);font-weight:600}
.side-contact .sc-hot .sc-v{font-size:18px;color:var(--c-accent)}
.side-cta{
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary2));
  border-radius:10px;padding:24px;text-align:center;color:#fff;
  position:relative;overflow:hidden;
}
.side-cta::before{
  content:'';position:absolute;
  top:-20%;right:-20%;width:140px;height:140px;
  border-radius:50%;background:rgba(255,255,255,.06);
}
.side-cta h4{font-size:17px;margin-bottom:6px;position:relative;z-index:1}
.side-cta p{font-size:12px;color:rgba(255,255,255,.7);margin-bottom:14px;position:relative;z-index:1}
.side-cta .cs-img{display:block;width:100%;height:160px;object-fit:cover;border-radius:8px;margin-top:14px;position:relative;z-index:1}

/* === About Section === */
.about-row{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.about-text .label{
  font-size:12px;color:var(--c-primary2);letter-spacing:3px;
  font-weight:600;margin-bottom:8px;
}
.about-text h2{font-size:28px;font-weight:700;margin-bottom:8px}
.about-text h2 span{color:var(--c-primary)}
.about-text .uline{width:50px;height:3px;background:var(--c-accent);margin-bottom:20px;border-radius:2px}
.about-text .lead{font-size:15px;color:var(--c-text);font-weight:500;margin-bottom:14px;line-height:1.8}
.about-text p{color:var(--c-text2);margin-bottom:12px;line-height:1.9;font-size:13px}
.about-visual .av-card{
  background:linear-gradient(135deg,var(--c-primary-dark),var(--c-primary2));
  border-radius:12px;padding:40px;color:#fff;position:relative;overflow:hidden;
}
.about-visual .av-card::after{
  content:'';position:absolute;
  inset:0;
  background:
    linear-gradient(to right, var(--c-primary-dark) 0%, rgba(0,70,120,.9) 50%, rgba(0,70,120,.7) 100%),
    url('../images/company-gate.jpg') center/cover no-repeat;
  z-index:0;
}
@media(max-width:768px){
  .about-visual .av-card::after{
    background:
      linear-gradient(to bottom, rgba(0,52,86,.96) 0%, rgba(0,70,120,.88) 55%, rgba(0,70,120,.7) 100%),
      url('../images/company-gate.jpg') center/cover no-repeat;
  }
}
.about-visual .av-card > *{position:relative;z-index:1}
.about-visual .av-card::before{
  content:'';position:absolute;
  top:-25%;right:-10%;width:240px;height:240px;
  border-radius:50%;background:rgba(255,255,255,.05);
}
.about-visual .big-num{font-size:56px;font-weight:800;line-height:1;position:relative;z-index:1}
.about-visual .big-label{font-size:13px;color:rgba(255,255,255,.7);margin-top:8px;position:relative;z-index:1}
.about-visual .mini-grid{
  display:grid;grid-template-columns:1fr 1fr;
  gap:24px;margin-top:30px;position:relative;z-index:1;
}
.about-visual .mini-stat{
  border-top:1px solid rgba(255,255,255,.15);padding-top:14px;
}
.about-visual .mini-stat .n{font-size:26px;font-weight:700;color:var(--c-accent2)}
.about-visual .mini-stat .l{font-size:12px;color:rgba(255,255,255,.5);margin-top:2px}

/* === Stats Row === */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:48px}
.stat-card{
  border:1px solid var(--c-line);border-radius:10px;
  padding:24px 20px;text-align:center;
  transition:all .3s;
}
.stat-card:hover{border-color:var(--c-primary);transform:translateY(-4px)}
.stat-card .num{font-size:38px;font-weight:800;color:var(--c-bg3);line-height:1}
.stat-card .num span{color:var(--c-primary)}
.stat-card h4{font-size:16px;color:var(--c-text);margin:10px 0 6px}
.stat-card p{font-size:12px;color:var(--c-text2)}

/* === Application grid === */
.app-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.app-card{
  text-align:center;border:1px solid var(--c-line);
  border-radius:10px;padding:24px 12px;
  transition:all .3s;position:relative;overflow:hidden;
}
.app-card::after{
  content:'';position:absolute;bottom:0;left:0;right:0;
  height:3px;background:var(--c-primary);
  transform:scaleX(0);transition:transform .3s;
}
.app-card:hover{border-color:var(--c-primary);background:var(--c-bg2);transform:translateY(-4px)}
.app-card:hover::after{transform:scaleX(1)}
.app-card .ai{
  width:52px;height:52px;border-radius:50%;
  background:var(--c-bg3);display:flex;align-items:center;justify-content:center;
  margin:0 auto 12px;color:var(--c-primary);
  transition:all .3s;
}
.app-card:hover .ai{background:var(--c-primary);color:#fff}
.app-card .ai svg{width:26px;height:26px}
.app-card h4{font-size:14px;color:var(--c-text);margin-bottom:4px;font-weight:600}
.app-card p{font-size:12px;color:var(--c-text3)}

/* === Contact Section === */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.contact-info .label{
  font-size:12px;color:var(--c-primary2);letter-spacing:3px;
  font-weight:600;margin-bottom:8px;
}
.contact-info h2{font-size:28px;font-weight:700;margin-bottom:8px}
.contact-info h2 span{color:var(--c-primary)}
.contact-info .uline{width:50px;height:3px;background:var(--c-accent);margin-bottom:20px;border-radius:2px}
.contact-info>.desc{color:var(--c-text2);margin-bottom:24px;font-size:13px;line-height:1.9}
.contact-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px;background:var(--c-bg2);border-radius:10px;
  transition:all .2s;
}
.contact-item:hover{background:var(--c-bg3);transform:translateY(-2px)}
.contact-item .ci{
  width:40px;height:40px;border-radius:10px;
  background:var(--c-primary);display:flex;align-items:center;
  justify-content:center;flex-shrink:0;color:#fff;
}
.contact-item .ci svg{width:18px;height:18px}
.contact-item .cl{font-size:11px;color:var(--c-text3)}
.contact-item .cv{font-size:14px;color:var(--c-text);font-weight:600;margin-top:2px}

/* Contact Form */
.contact-form{
  background:var(--c-bg2);border-radius:12px;padding:36px;
}
.contact-form h3{font-size:20px;font-weight:700;margin-bottom:4px}
.contact-form h3 span{color:var(--c-primary)}
.contact-form .sub{font-size:13px;color:var(--c-text3);margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:13px;color:var(--c-text);margin-bottom:6px;font-weight:500}
.form-group label .req{color:var(--c-accent)}
.form-group input,
.form-group select,
.form-group textarea{
  width:100%;padding:10px 14px;
  border:1px solid var(--c-line);border-radius:6px;
  font-size:14px;font-family:inherit;
  transition:all .2s;background:#fff;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(20,73,108,.08);
}
.form-group textarea{resize:vertical;min-height:90px}
.form-success{
  display:none;background:rgba(22,163,74,.08);
  border:1px solid #16a34a;border-radius:8px;
  padding:12px;text-align:center;color:#16a34a;
  font-weight:600;margin-top:14px;font-size:13px;
}
.form-success.show{display:block;animation:fadeUp .3s}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* === Buttons === */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 28px;border-radius:6px;
  font-size:14px;font-weight:600;border:none;cursor:pointer;
  transition:all .3s;font-family:inherit;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-2px)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent2);transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--c-primary);border:2px solid var(--c-primary)}
.btn-outline:hover{background:var(--c-primary);color:#fff}
.btn-white{background:#fff;color:var(--c-primary)}
.btn-white:hover{background:var(--c-bg2)}
.btn-block{width:100%}
.btn-sm{padding:8px 18px;font-size:13px}

/* Map Section */
.map-wrap{
  border-radius:12px;
  overflow:hidden;
  border:2px solid var(--c-line);
  background:var(--c-bg2);
  position:relative;
}
.map-wrap iframe{
  width:100%;height:450px;display:block;border:0;
}

/* === Product Detail Page === */
.prod-detail-top{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.prod-gallery{
  background:linear-gradient(135deg,var(--c-bg2),var(--c-bg3));
  border-radius:12px;height:400px;
  display:flex;align-items:center;justify-content:center;
}
.prod-gallery .big-ico{
  width:120px;height:120px;border-radius:50%;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary2));
  display:flex;align-items:center;justify-content:center;
}
.prod-gallery .big-ico svg{width:60px;height:60px;color:#fff}
.prod-info h1{font-size:28px;font-weight:700;margin-bottom:12px}
.prod-info .subtitle{font-size:14px;color:var(--c-text2);margin-bottom:16px;line-height:1.7}
.prod-info .tags-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.prod-info .tags-row span{
  padding:5px 14px;border-radius:20px;
  font-size:12px;font-weight:500;
  background:var(--c-bg3);color:var(--c-primary);
}
.prod-info .specs-table{width:100%;border-collapse:collapse;margin-bottom:24px}
.prod-info .specs-table td{
  padding:10px 14px;border-bottom:1px solid var(--c-line);
  font-size:13px;
}
.prod-info .specs-table td:first-child{
  color:var(--c-text3);width:120px;font-weight:500;
}
.prod-info .specs-table td:last-child{color:var(--c-text)}
.prod-desc-section{margin-top:40px}
.prod-desc-section h3{
  font-size:20px;font-weight:700;margin-bottom:16px;
  padding-bottom:12px;border-bottom:2px solid var(--c-bg3);
}
.prod-desc-section h3 span{color:var(--c-primary)}
.prod-desc-section p{font-size:14px;color:var(--c-text2);line-height:2;margin-bottom:14px}

/* === News Detail Page === */
.article-header{text-align:center;padding-bottom:20px;border-bottom:1px solid var(--c-line);margin-bottom:28px}
.article-header h1{font-size:28px;font-weight:700;margin-bottom:14px}
.article-header .meta{
  font-size:13px;color:var(--c-text3);
  display:flex;justify-content:center;gap:20px;
}
.article-featured-img{
  width:100%;max-width:900px;margin:0 auto 28px;
  border-radius:12px;overflow:hidden;
  box-shadow:0 4px 16px rgba(0,0,0,.08);
}
.article-featured-img img{width:100%;height:auto;display:block}
.article-body{max-width:800px;margin:0 auto}
.article-body p{
  font-size:15px;color:var(--c-text2);line-height:2;
  margin-bottom:18px;text-indent:2em;
}
.article-body h3{font-size:20px;font-weight:700;margin:28px 0 14px;text-indent:0}
.article-nav{
  display:flex;justify-content:space-between;
  padding-top:24px;margin-top:32px;
  border-top:1px solid var(--c-line);
}
.article-nav a{
  font-size:14px;color:var(--c-text2);
  display:inline-flex;align-items:center;gap:6px;
  transition:color .2s;
}
.article-nav a:hover{color:var(--c-primary)}

/* === About Page === */
.timeline{position:relative;padding:20px 0}
.timeline::before{
  content:'';position:absolute;left:50%;top:0;bottom:0;
  width:2px;background:var(--c-line);
  transform:translateX(-50%);
}
.timeline-item{
  display:grid;grid-template-columns:1fr 1fr;gap:40px;
  align-items:center;margin-bottom:32px;
}
.timeline-item:nth-child(even){direction:rtl}
.timeline-item:nth-child(even) .tl-content{direction:ltr}
.timeline-item:nth-child(even) .tl-dot{left:50%}
.tl-content{
  background:var(--c-bg2);border-radius:10px;
  padding:20px 24px;position:relative;
}
.tl-content .year{font-size:14px;color:var(--c-primary2);font-weight:700;margin-bottom:6px}
.tl-content h4{font-size:16px;color:var(--c-text);margin-bottom:6px}
.tl-content p{font-size:13px;color:var(--c-text2);line-height:1.7}
.tl-dot{
  position:absolute;left:calc(50% - 14px);
  width:28px;height:28px;border-radius:50%;
  background:var(--c-primary);border:4px solid #fff;
  box-shadow:0 0 0 2px var(--c-line);
  z-index:1;
}

/* === Applications Page === */
.app-detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.app-detail-card{
  border:1px solid var(--c-line);border-radius:10px;
  padding:28px 24px;transition:all .3s;
}
.app-detail-card:hover{
  border-color:var(--c-primary);
  box-shadow:0 8px 24px rgba(20,73,108,.08);
}
.app-detail-card .ad-icon{
  width:56px;height:56px;border-radius:12px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary2));
  display:flex;align-items:center;justify-content:center;
  color:#fff;margin-bottom:16px;
}
.app-detail-card .ad-icon svg{width:28px;height:28px}
.app-detail-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.app-detail-card p{font-size:13px;color:var(--c-text2);line-height:1.8;margin-bottom:12px}
.app-detail-card .products-used{
  display:flex;flex-wrap:wrap;gap:6px;
}
.app-detail-card .products-used span{
  font-size:11px;padding:3px 10px;
  background:var(--c-bg3);color:var(--c-primary);
  border-radius:12px;
}

/* === News List Page === */
.pagination{
  display:flex;justify-content:center;gap:6px;margin-top:32px;
}
.pagination a,.pagination span{
  min-width:36px;height:36px;border-radius:6px;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--c-text2);
  border:1px solid var(--c-line);
  transition:all .2s;padding:0 12px;
}
.pagination a:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.pagination .current{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.pagination .dots{border:none;letter-spacing:2px}

/* === Tabs === */
.tab-nav{display:flex;justify-content:center;gap:8px;margin-bottom:32px;flex-wrap:wrap}
.tab-btn{
  padding:8px 22px;border-radius:30px;
  font-size:14px;font-weight:500;color:var(--c-text2);
  background:#fff;border:1px solid var(--c-line);
  cursor:pointer;transition:all .2s;
}
.tab-btn:hover{color:var(--c-primary);border-color:var(--c-primary2)}
.tab-btn.active{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}

/* === Footer === */
.footer{
  background:var(--c-primary-dark);
  color:rgba(255,255,255,.45);
  padding:48px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:36px;padding-bottom:36px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.footer-brand p{
  font-size:13px;line-height:1.9;margin:14px 0 16px;
}
.footer-brand .logo-img{width:50px;height:50px;object-fit:contain;background:transparent;padding:0;border-radius:0}
.footer-brand .logo-text .cn{color:#fff;font-size:18px}
.footer-brand .logo-text .en{color:#b8c6d6;font-size:10px}
.footer-social{display:flex;gap:8px}
.footer-social a{
  width:34px;height:34px;border-radius:8px;
  background:rgba(255,255,255,.05);
  display:flex;align-items:center;justify-content:center;
  transition:all .2s;
}
.footer-social a:hover{background:var(--c-accent)}
.footer-social svg{width:16px;height:16px}
.footer h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600}
.footer ul li{margin-bottom:10px}
.footer ul li a{
  font-size:13px;transition:all .2s;
  display:inline-flex;align-items:center;gap:6px;
}
.footer ul li a::before{content:'\203A';color:rgba(255,255,255,.15)}
.footer ul li a:hover{color:var(--c-accent2);padding-left:3px}
.footer-contact li{
  font-size:13px;margin-bottom:12px;
  display:flex;gap:8px;align-items:flex-start;
}
.footer-contact svg{width:15px;height:15px;flex-shrink:0;margin-top:3px;color:var(--c-primary2)}
.footer-bottom{
  padding:18px 0;text-align:center;font-size:12px;
}
.footer-bottom a{color:var(--c-primary2)}
.footer-bottom a:hover{color:#fff}

/* === Floating Elements === */
.float-bar{
  position:fixed;right:16px;bottom:80px;
  z-index:900;display:flex;flex-direction:column;gap:8px;
}
.float-btn{
  width:48px;height:48px;border-radius:10px;
  background:#fff;box-shadow:0 4px 16px rgba(0,0,0,.1);
  display:flex;flex-direction:column;align-items:center;
  justify-content:center;cursor:pointer;
  transition:all .3s;color:var(--c-text2);
  border:1px solid var(--c-line);
}
.float-btn:hover{background:var(--c-primary);color:#fff;transform:translateX(-3px)}
.float-btn svg{width:20px;height:20px}
.float-btn .ft{font-size:9px;margin-top:1px}
.float-btn.accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent)}
.float-btn.accent:hover{background:var(--c-accent2)}
.back-top{
  position:fixed;right:16px;bottom:20px;
  width:48px;height:48px;border-radius:10px;
  background:var(--c-primary);color:#fff;border:none;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 16px rgba(0,0,0,.15);
  opacity:0;visibility:hidden;transition:all .3s;z-index:900;
}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:var(--c-primary2)}
.back-top svg{width:22px;height:22px}

/* === Animations === */
.fade-up{
  opacity:0;transform:translateY(24px);
  transition:opacity .6s,transform .6s;
}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* === Breadcrumb (on page) === */
.breadcrumb-bar{
  background:var(--c-bg2);
  padding:12px 0;border-bottom:1px solid var(--c-line);
}
.breadcrumb-bar .container{
  display:flex;align-items:center;gap:8px;font-size:13px;
}
.breadcrumb-bar a{color:var(--c-text2);transition:color .2s}
.breadcrumb-bar a:hover{color:var(--c-primary)}
.breadcrumb-bar .current{color:var(--c-primary);font-weight:600}
.breadcrumb-bar .sep{color:var(--c-text3)}

/* === Nav active indicator === */
.main-nav>li.active>a::after{
  content:'';position:absolute;bottom:0;left:50%;
  transform:translateX(-50%);
  width:28px;height:3px;background:var(--c-accent);
  border-radius:2px;
}
.main-nav>li>a{position:relative}

/* Footer QR codes */
.footer-qr{display:flex;gap:12px;margin-top:16px}
.footer-qr-item{text-align:center}
.footer-qr-item img{width:64px;height:64px;border-radius:6px;background:#fff;padding:4px;display:block}
.footer-qr-item span{display:block;font-size:10px;color:rgba(255,255,255,.35);margin-top:4px}

/* === Hamburger Button (hidden on desktop) === */
.hamburger{
  display:none;flex-direction:column;justify-content:center;align-items:center;
  width:40px;height:40px;padding:8px 6px;gap:5px;
  background:transparent;border:none;cursor:pointer;
  z-index:1100;position:relative;margin-left:auto;
}
.hamburger span{
  display:block;width:24px;height:2.5px;
  background:var(--c-primary);border-radius:2px;
  transition:transform .3s,opacity .3s;
}
body.nav-open .hamburger span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
body.nav-open .hamburger span:nth-child(2){opacity:0}
body.nav-open .hamburger span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

/* === RESPONSIVE: Tablet (≤1024px) === */
@media(max-width:1024px){
  :root{--header-h:68px}

  /* Topbar */
  .topbar{height:auto;line-height:1.4;padding:6px 0}
  .topbar-inner{flex-direction:column;gap:4px;text-align:center;font-size:11px}
  .topbar-left{flex-wrap:wrap;justify-content:center;gap:10px}

  /* Header */
  .header-inner{padding:0 20px}
  .logo{margin-right:0;gap:10px}
  .logo-img{width:44px;height:44px}
  .logo-text .cn{font-size:16px}
  .logo-text .en{font-size:10px}
  .header-right,.header-phone{display:none}

  /* Show hamburger */
  .hamburger{display:flex}

  /* Mobile Nav: slide-in sidebar */
  .main-nav{
    position:fixed;top:0;right:-280px;
    width:280px;height:100vh;height:100dvh;
    background:#fff;box-shadow:-4px 0 30px rgba(0,0,0,.15);
    flex-direction:column;align-items:stretch;
    padding:76px 0 20px;gap:0;
    transition:right .35s ease;z-index:1050;
    overflow-y:auto;
  }
  body.nav-open .main-nav{right:0}
  body.nav-open::after{
    content:'';position:fixed;inset:0;
    background:rgba(0,0,0,.4);z-index:990;
  }
  .main-nav>li>a{
    height:auto;padding:14px 24px;font-size:15px;
    border-bottom:1px solid var(--c-bg3);
  }
  .main-nav>li.active>a::after{display:none}
  .main-nav>li>a .arrow{display:none}

  /* Mobile dropdowns */
  .submenu,.mega-menu{
    position:static;width:100%;box-shadow:none;
    border-radius:0;border-top:none;border-bottom:1px solid var(--c-bg3);
    padding:0;display:none;
  }
  .main-nav>li.open>.submenu,
  .main-nav>li.open>.mega-menu{display:block;animation:none}
  .submenu li a{padding:10px 40px;font-size:13px}
  .mega-menu{left:0;padding:8px 24px 14px}
  .mega-grid{grid-template-columns:1fr}
  .mega-item{padding:8px 0}

  /* Page container */
  .container{padding:0 20px}

  /* Home Banner */
  .home-banner{height:380px}
  .banner-slide{align-items:center}
  .banner-slide .bg .bg-overlay{
    background:linear-gradient(135deg,rgba(13,47,72,.95) 0%,rgba(13,47,72,.82) 50%,rgba(13,47,72,.5) 100%);
  }
  .banner-content{padding:0 20px}
  .banner-content h2{font-size:26px;margin-bottom:12px}
  .banner-content .desc{font-size:13px;max-width:100%;margin-bottom:20px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .banner-btns{flex-direction:row;flex-wrap:wrap;gap:10px}
  .btn-banner{padding:10px 18px;font-size:13px}
  .banner-arrows{padding:0 8px}
  .banner-arrow{width:36px;height:36px}
  .banner-arrow svg{width:16px;height:16px}

  /* Quick strip */
  .quick-strip .container{flex-wrap:wrap}
  .quick-item{flex:1 1 50%;min-width:200px}

  /* Grids */
  .card-grid-3{grid-template-columns:repeat(2,1fr);gap:16px}
  .card-grid-4{grid-template-columns:repeat(2,1fr);gap:16px}
  .card-grid-2{grid-template-columns:1fr}
  .stats-row{grid-template-columns:repeat(2,1fr);gap:14px}
  .app-grid{grid-template-columns:repeat(3,1fr);gap:12px}
  .app-detail-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .contact-list{grid-template-columns:repeat(2,1fr)}
  .map-wrap iframe{height:380px}
  .about-row{grid-template-columns:1fr;gap:32px}
  .news-layout{grid-template-columns:1fr}
  .hot-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .prod-detail-top{grid-template-columns:1fr;gap:28px}
  .news-side{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}

  /* Product cards */
  .prod-card .img{height:170px}
  .prod-gallery{height:300px}

  /* Article */
  .article-header h1{font-size:22px}
  .article-body p{font-size:14px}

  /* Footer */
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}

  /* Page banner */
  .page-banner{padding:44px 0}
  .page-banner h1{font-size:28px}

  /* Section */
  .section{padding:48px 0}
  .section-head h2{font-size:26px}
  .section-head{margin-bottom:30px}

  /* Timeline */
  .timeline::before{left:24px;transform:none}
  .timeline-item{grid-template-columns:1fr;gap:14px;margin-bottom:24px}
  .timeline-item:nth-child(even){direction:ltr}
  .tl-dot{display:none}
  .tl-content{margin-left:36px}

  /* Forms */
  .form-row,.form-row3{grid-template-columns:1fr}

  /* Tabs */
  .tab-nav{gap:6px}
  .tab-btn{padding:7px 16px;font-size:13px}
}

/* === RESPONSIVE: Mobile (≤768px) === */
@media(max-width:768px){
  :root{--header-h:60px}

  .container{padding:0 16px}
  .header-inner{padding:0 16px}
  .topbar-inner{padding:0 16px}

  .logo{gap:8px}
  .logo-img{width:38px;height:38px}
  .logo-text .cn{font-size:15px}
  .logo-text .en{font-size:9px}

  /* Banner */
  .home-banner{height:340px}
  .banner-slide{align-items:center}
  .banner-slide .bg .bg-overlay{
    background:linear-gradient(160deg,rgba(13,47,72,.96) 0%,rgba(13,47,72,.88) 55%,rgba(13,47,72,.6) 100%);
  }
  .banner-content{padding:0 16px}
  .banner-content h2{font-size:22px;margin-bottom:10px}
  .banner-content .desc{font-size:12px;max-width:100%;margin-bottom:16px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .banner-btns{flex-direction:row;flex-wrap:wrap;gap:8px}
  .btn-banner{padding:9px 14px;font-size:12px}
  .banner-dots{bottom:12px}
  .banner-dot{width:24px}

  /* Quick strip */
  .quick-item{flex:1 1 100%}

  /* All grids single column */
  .card-grid-3{grid-template-columns:1fr;max-width:400px;margin:0 auto}
  .card-grid-4{grid-template-columns:1fr;max-width:400px;margin:0 auto}
  .stats-row{grid-template-columns:1fr 1fr;gap:10px}
  .app-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .app-detail-grid{grid-template-columns:1fr;gap:14px}
  .contact-grid{grid-template-columns:1fr}
  .contact-list{grid-template-columns:1fr;gap:10px}
  .about-row{grid-template-columns:1fr}
  .news-layout{grid-template-columns:1fr}
  .news-side{grid-template-columns:1fr;gap:14px}
  .news-card.featured{grid-template-columns:1fr}
  .news-card.featured .nc-img{min-height:160px}
  .hot-grid{grid-template-columns:1fr;max-width:400px;margin:0 auto}
  .news-list-item.has-img{grid-template-columns:1fr}
  .nl-img{height:180px}
  .news-item{flex-direction:column;align-items:flex-start}
  .news-item .ni-thumb{width:100%;height:120px;border-radius:8px}
  .news-item .ni-date{border-right:none;border-bottom:1px solid var(--c-bg3);padding-right:0;padding-bottom:8px;margin-bottom:8px;width:auto;text-align:left;display:flex;gap:6px;align-items:baseline}

  /* Product detail */
  .prod-detail-top{grid-template-columns:1fr;gap:20px}
  .prod-gallery{height:240px}
  .prod-info h1{font-size:22px}
  .prod-info .specs-table td:first-child{width:90px}

  /* Article */
  .article-header h1{font-size:20px}
  .article-featured-img{margin-bottom:20px;border-radius:8px}
  .article-body p{font-size:14px;text-indent:1.5em}
  .article-body h3{font-size:18px;margin:22px 0 12px}

  /* Contact */
  .contact-form{padding:24px 20px}
  .contact-item{padding:14px}
  .map-wrap iframe{height:300px}

  /* Footer */
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-qr{justify-content:flex-start}

  /* Page banner */
  .page-banner{padding:36px 0}
  .page-banner h1{font-size:24px}

  /* Sections */
  .section{padding:36px 0}
  .section-head h2{font-size:22px}
  .section-head{margin-bottom:24px}

  /* Timeline */
  .tl-content{padding:14px 16px;margin-left:32px}
  .tl-content h4{font-size:14px}
  .tl-content p{font-size:12px}

  /* About visual */
  .about-visual .av-card{padding:20px}
  .about-visual .big-num{font-size:32px}
  .about-visual .big-label{font-size:12px}
  .about-visual .mini-grid{gap:12px;margin-top:16px;grid-template-columns:repeat(2,1fr)}
  .about-visual .mini-stat{padding-top:10px}
  .about-visual .mini-stat .n{font-size:18px}
  .about-visual .mini-stat .l{font-size:11px}

  /* Tabs */
  .tab-nav{justify-content:flex-start;overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px;-webkit-overflow-scrolling:touch}
  .tab-btn{flex-shrink:0;font-size:13px;padding:7px 14px}

  /* Banner arrows */
  .banner-arrows{display:none}

  /* Mobile nav width */
  .main-nav{width:260px;right:-260px}

  /* Float bar */
  .float-btn{width:40px;height:40px;border-radius:8px}
  .float-btn svg{width:18px;height:18px}
  .back-top{width:40px;height:40px;right:8px;bottom:12px}

  /* Footer QR */
  .footer-qr-item img{width:56px;height:56px}

  /* Pagination */
  .pagination{gap:4px}
  .pagination a,.pagination span{min-width:32px;height:32px;font-size:13px;padding:0 8px}
}

/* === RESPONSIVE: Small Phones (≤480px) === */
@media(max-width:480px){
  .container{padding:0 12px}
  .header-inner{padding:0 12px}
  .topbar-inner{padding:0 12px;font-size:10px}

  .logo-img{width:34px;height:34px}
  .logo-text .cn{font-size:14px}
  .logo-text .en{font-size:8px;letter-spacing:.5px}

  .home-banner{height:220px}
  .banner-content h2{font-size:20px}
  .banner-content .desc{font-size:12px;line-height:1.7}
  .banner-tag{font-size:10px;padding:3px 10px}
  .btn-banner{padding:8px 16px;font-size:12px}

  .stats-row{grid-template-columns:1fr 1fr}
  .stat-card{padding:16px 12px}
  .stat-card .num{font-size:28px}
  .app-grid{grid-template-columns:1fr 1fr}

  .prod-gallery{height:200px}
  .prod-info h1{font-size:20px}

  .about-visual .av-card{padding:18px}
  .about-visual .big-num{font-size:28px}
  .about-visual .mini-grid{gap:10px;margin-top:14px}
  .about-visual .mini-stat .n{font-size:16px}
  .about-visual .mini-stat .l{font-size:10px}

  .article-header h1{font-size:18px}
  .article-body p{font-size:13px}

  .page-banner h1{font-size:20px}
  .section{padding:28px 0}
  .section-head h2{font-size:20px}

  .footer{padding:32px 0 0}
  .footer h4{font-size:14px;margin-bottom:12px}
  .footer-bottom{font-size:11px}

  .contact-form{padding:20px 16px}
  .map-wrap iframe{height:240px}

  .main-nav{width:240px;right:-240px}

  .tl-content{margin-left:26px}

  .pagination a,.pagination span{min-width:28px;height:28px;font-size:12px;padding:0 6px;border-radius:4px}
}

/* === Responsive: large desktop tweaks === */
@media(min-width:1400px){
  :root{--w:1280px}
}