/* ============ 九贺 NINEHOR 官网 · 工业机械风 ============ */
:root{
  --red:#c8102e;
  --red-dark:#9e0c24;
  --red-glow:rgba(200,16,46,.12);
  --ink:#14171c;
  --ink-2:#1e2229;
  --ink-3:#2a2f38;
  --bg:#eef0f3;
  --bg-2:#ffffff;
  --bg-3:#e4e7ec;
  --line:rgba(20,23,28,.10);
  --line-2:rgba(20,23,28,.18);
  --text:#1a1d22;
  --text-dim:#5a6270;
  --white:#ffffff;
  --maxw:1360px;
  --shadow:0 8px 28px rgba(20,23,28,.08);
  --shadow-lg:0 16px 44px rgba(20,23,28,.12);
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Hiragino Sans GB","PingFang SC","Microsoft YaHei","HarmonyOS Sans","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{text-decoration:none;color:inherit;}
ul{list-style:none;}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:background .3s,box-shadow .3s;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform .3s;
}
.site-header:hover::after{transform:scaleX(1);}
.header-inner{
  max-width:var(--maxw);margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 24px;height:82px;
}
.brand{display:flex;align-items:center;gap:12px;}
.brand-logo-img{height:66px;width:auto;display:block;}

.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  display:inline-flex;align-items:center;
  color:var(--text-dim);font-size:16px;font-weight:600;
  letter-spacing:1px;position:relative;padding:8px 0;transition:color .25s;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--red);transition:width .25s;
}
.main-nav a:hover,.main-nav a.active{color:var(--ink);}
.main-nav a:hover::after,.main-nav a.active::after{width:100%;}

.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;}
.menu-toggle span{width:24px;height:2px;background:var(--text);transition:.3s;}

/* 下拉菜单（产品中心） */
.main-nav .has-drop{position:relative;display:inline-flex;align-items:center;}
.main-nav .caret{font-size:10px;margin-left:3px;font-style:normal;}
.main-nav .drop-menu{
  position:absolute;top:100%;left:0;min-width:100%;white-space:nowrap;
  padding-top:10px;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:.25s;z-index:50;
}
.main-nav .drop-menu::before{
  content:"";position:absolute;top:4px;left:0;right:0;height:8px;
}
.main-nav .drop-menu a{
  display:block;background:var(--bg-2);border:1px solid var(--line);
  border-top:none;padding:12px 20px;font-size:13px;color:var(--text-dim);
  letter-spacing:1px;transition:.2s;
}
.main-nav .drop-menu a:first-child{border-top:1px solid var(--line);}
.main-nav .drop-menu a:hover{color:var(--red);background:var(--bg-3);padding-left:24px;}
.main-nav .has-drop:hover .drop-menu{opacity:1;visibility:visible;transform:translateY(0);}

/* 语言下拉 */
.header-right{display:flex;align-items:center;gap:14px;}
.lang-drop{position:relative;}
.lang-toggle{
  display:flex;align-items:center;gap:6px;background:none;border:1px solid var(--line);
  color:var(--text-dim);font-size:13px;font-weight:600;padding:7px 14px;cursor:pointer;transition:.25s;
}
.lang-toggle:hover{border-color:var(--ink);color:var(--ink);}
.lang-menu{
  position:absolute;top:100%;right:0;min-width:120px;padding-top:10px;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:.25s;z-index:50;
}
.lang-drop:hover .lang-menu{opacity:1;visibility:visible;transform:translateY(0);}
.lang-menu a{
  display:block;background:var(--bg-2);border:1px solid var(--line);
  border-top:none;padding:10px 16px;font-size:13px;color:var(--text-dim);transition:.2s;
}
.lang-menu a:first-child{border-top:1px solid var(--line);}
.lang-menu a:hover,.lang-menu a.active{color:var(--red);}

/* ============ 首页轮播 ============ */
.hero{position:relative;height:100vh;min-height:640px;margin-top:82px;overflow:hidden;}
.hero-slider,.slide{position:absolute;inset:0;}
.slide{
  opacity:0;visibility:hidden;transition:opacity 1s ease;
  background-size:cover;background-position:center;
}
.slide.active{opacity:1;visibility:visible;}
.slide::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,12,16,.92) 0%,rgba(10,12,16,.6) 50%,rgba(10,12,16,.3) 100%);
}
.slide-content{
  position:relative;z-index:2;height:100%;
  display:flex;flex-direction:column;justify-content:center;align-items:flex-start;
  text-align:left;
  max-width:var(--maxw);margin:0 auto;padding:0 24px;
}
.slide-tag{
  display:inline-block;color:var(--red);font-size:13px;
  letter-spacing:5px;font-weight:700;margin-bottom:24px;
  border-left:3px solid var(--red);padding:4px 0 4px 14px;
}
.slide-content h1{
  font-size:58px;font-weight:900;color:var(--white);
  letter-spacing:4px;margin-bottom:24px;
  line-height:1.2;
}
.slide-content p{
  font-size:20px;color:#c8cdd6;max-width:720px;margin-bottom:18px;letter-spacing:1px;
}
.slide-desc{
  font-size:16px;color:#9aa1ad;max-width:680px;margin-bottom:42px;
  line-height:1.9;letter-spacing:.5px;
}
.slide-btns{display:flex;gap:20px;flex-wrap:wrap;justify-content:flex-start;}
.btn-primary{
  display:inline-block;width:max-content;
  background:var(--red);color:var(--white);
  padding:14px 38px;font-size:15px;font-weight:700;
  letter-spacing:2px;transition:background .25s;
}
.btn-primary:hover{background:var(--red-dark);}
.btn-outline-light{
  background:rgba(20,23,28,.85);color:var(--white);border:1px solid rgba(255,255,255,.5);
}
.btn-outline-light:hover{background:rgba(20,23,28,1);border-color:var(--white);}

.hero-dots{
  position:absolute;bottom:30px;left:50%;transform:translateX(-50%);
  display:flex;gap:8px;z-index:5;
}
.hero-dots .dot{
  width:24px;height:3px;background:rgba(255,255,255,.3);cursor:pointer;transition:.3s;
}
.hero-dots .dot.active{background:var(--red);width:40px;}
.hero-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  width:52px;height:52px;border:1px solid rgba(255,255,255,.3);
  background:rgba(10,12,16,.4);color:var(--white);font-size:24px;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:background .25s,border-color .25s,transform .25s;
  border-radius:50%;
}
.hero-arrow:hover{background:var(--red);border-color:var(--red);transform:translateY(-50%) scale(1.6);}
.hero-arrow.prev{left:24px;}
.hero-arrow.next{right:24px;}

/* 轮播标语 */
.hero-slogan{
  display:inline-flex;align-items:center;gap:28px;
  background:rgba(10,12,16,.5);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.15);
  padding:14px 40px;border-radius:40px;margin-top:36px;
  width:max-content;
}
.hero-slogan .hs-item strong{
  color:var(--white);font-size:18px;font-weight:800;letter-spacing:8px;
}
.hero-slogan .hs-sep{width:1px;height:20px;background:rgba(255,255,255,.25);}
@media(max-width:768px){
  .brand-logo-img{height:36px;}
  .header-inner{padding:0 16px;height:56px;}
  .site-header{position:fixed;}
  .main-nav{
    position:fixed;top:56px;left:0;right:0;
    flex-direction:column;background:rgba(14,17,22,.98);
    padding:24px;gap:14px;transform:translateY(-130%);transition:.3s;overflow-y:auto;max-height:calc(100vh - 56px);
    display:none;
  }
  .main-nav.open{display:flex;transform:translateY(0);}
  .main-nav a{color:#c8cdd6;}
  .main-nav .drop-menu{
    position:static;opacity:1;visibility:visible;transform:none;padding-top:0;margin-top:8px;
  }
  .main-nav .drop-menu a{border:none;background:transparent;color:#8a92a0;}
  .header-right{display:flex;align-items:center;gap:10px;}
  .lang-drop{display:block;}
  .lang-toggle{font-size:12px;padding:4px 8px;}
  .menu-toggle{display:flex;}
  .menu-toggle span{background:var(--ink);}
  .hero{margin-top:56px;min-height:540px;}
  .page-banner{margin-top:56px;height:240px;}
  .page-banner h1{font-size:26px;}
  .section{padding:64px 16px;}
  .section-title{font-size:28px;}
  .product-grid{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr;gap:32px;}
  .news-row{grid-template-columns:1fr;}
  .news-row .nimg{min-height:160px;}
  .detail-wrap{grid-template-columns:1fr;padding:20px;}
  .contact-block{padding:24px;}
  .page-content-inner .product-grid{grid-template-columns:1fr !important;}
  .hero-slogan{gap:18px;padding:10px 24px;bottom:76px;}
  .hero-slogan .hs-item strong{font-size:15px;letter-spacing:4px;}
}

/* ============ 通用 section ============ */
.section{padding:96px 24px;}
.section-head{text-align:center;margin-bottom:56px;}
.section-title{
  font-size:36px;font-weight:900;color:var(--ink);letter-spacing:3px;
  position:relative;display:inline-block;padding-bottom:18px;
}
.section-title::after{
  content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:48px;height:3px;background:var(--red);
}
.section-sub{
  margin-top:14px;color:var(--red);font-size:13px;letter-spacing:6px;font-weight:600;
}

/* ============ 关于我们 ============ */
.about{background:var(--bg-2);}
.about-wrap{
  max-width:var(--maxw);margin:0 auto;
  display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;
}
.about-text p{color:var(--text-dim);margin-bottom:18px;font-size:15px;line-height:1.9;}

/* 滚动数字块 */
.about-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  margin:30px 0 36px;background:var(--line);
  border:1px solid var(--line);
}
.about-stats .stat{
  text-align:center;padding:26px 8px;background:var(--bg-2);
  transition:background .25s;
}
.about-stats .stat:hover{background:var(--bg-3);}
.about-stats .stat-num{
  font-size:24px;font-weight:800;color:var(--red);line-height:1;
  display:block;margin-bottom:8px;letter-spacing:1px;
  font-family:Georgia,"Times New Roman",serif;
}
.about-stats .stat-label{font-size:12px;color:var(--text-dim);letter-spacing:2px;}
@media(max-width:640px){
  .about-stats{grid-template-columns:repeat(2,1fr);}
}
.about-visual{
  height:460px;background-size:cover;background-position:center;
  box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
}

/* ============ 产品中心 ============ */
.products{background:var(--bg);}
.cat-tabs{
  max-width:var(--maxw);margin:0 auto 44px;
  display:flex;flex-wrap:wrap;justify-content:center;gap:0;
  border:1px solid var(--line);width:max-content;
}
.cat-tab{
  background:transparent;border:none;border-right:1px solid var(--line);
  color:var(--text-dim);
  padding:12px 32px;font-size:14px;font-weight:600;cursor:pointer;transition:.25s;letter-spacing:1px;
}
.cat-tab:last-child{border-right:none;}
.cat-tab:hover{color:var(--ink);background:var(--bg-3);}
.cat-tab.active{background:var(--ink);color:var(--white);}

/* 产品中心：左分类 + 右产品列表 */
.prod-layout{
  max-width:var(--maxw);margin:0 auto;
  display:grid;grid-template-columns:260px 1fr;gap:36px;align-items:start;
}
.prod-side{
  position:sticky;top:92px;display:flex;flex-direction:column;gap:20px;
}
.side-box{
  background:#fff;border:1px solid var(--line);border-radius:8px;padding:24px;
}
.side-title{
  font-size:15px;font-weight:800;color:var(--ink);
  letter-spacing:2px;padding-bottom:12px;margin-bottom:18px;
  border-bottom:2px solid var(--red);display:inline-block;
}
.cat-tabs.side{display:flex;flex-direction:column;gap:0;justify-content:flex-start;margin:0;border:none;width:auto;}
.cat-tabs.side .cat-tab{
  display:block;width:100%;text-align:left;
  border:none;border-bottom:1px solid var(--line);
  padding:13px 4px;color:var(--text-dim);background:transparent;font-size:14px;
}
.cat-tabs.side .cat-tab:last-child{border-bottom:none;}
.cat-tabs.side .cat-tab:hover{color:var(--red);padding-left:8px;}
.cat-tabs.side .cat-tab.active{color:var(--red);background:transparent;padding-left:8px;}
.side-hot-item{
  display:flex;align-items:center;gap:10px;
  padding:10px 4px;color:var(--text-dim);font-size:13px;
  border-bottom:1px solid var(--line);transition:.2s;
}
.side-hot-item img{
  width:48px;height:40px;object-fit:cover;border-radius:4px;flex-shrink:0;
}
.side-hot-item:last-child{border-bottom:none;}
.side-hot-item:hover{color:var(--red);}
.side-contact{
  display:flex;align-items:center;justify-content:center;
  background:var(--ink);color:var(--white);padding:16px 0;font-size:14px;
  font-weight:600;letter-spacing:2px;transition:.25s;border-radius:8px;text-decoration:none;
}
.side-contact:hover{background:var(--red);}
.prod-main{min-width:0;}
.prod-main .product-grid{grid-template-columns:repeat(3,1fr);}
@media(max-width:992px){
  .prod-layout{grid-template-columns:1fr;}
  .prod-side{position:static;}
  .cat-tabs.side{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .cat-tabs.side .cat-tab{width:auto;border:1px solid var(--line);padding:10px 20px;}
  .prod-main .product-grid{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:560px){
  .prod-main .product-grid{grid-template-columns:1fr;}
}

/* 联系 CTA */
.cta-band{
  background:linear-gradient(120deg,#14171c 0%,#1e2229 60%,#2a2f38 100%);
  padding:80px 0;
}
.cta-inner{
  max-width:var(--maxw);margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  padding:0 24px;
}
.cta-text h3{color:var(--white);font-size:26px;font-weight:800;letter-spacing:2px;}
.cta-text p{color:#a8b0bc;font-size:15px;margin-top:14px;max-width:620px;line-height:1.8;}
.cta-actions{display:flex;gap:16px;flex-wrap:wrap;}
@media(max-width:768px){
  .cta-inner{flex-direction:column;text-align:center;}
  .cta-actions{justify-content:center;}
}

.cat-panel{display:none;max-width:var(--maxw);margin:0 auto;}
.cat-panel.active{display:grid;}
.product-grid{grid-template-columns:repeat(4,1fr);gap:24px;}
.product-card{
  display:block;background:var(--bg-2);border:1px solid var(--line);
  overflow:hidden;transition:border-color .25s,box-shadow .25s;
  border-radius:12px;
}
.product-card:hover{
  border-color:var(--ink);
  box-shadow:var(--shadow-lg);
}
.product-img{
  height:340px;display:flex;align-items:center;justify-content:center;
  background:#f4f5f7;padding:0px;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.product-img img{width:100%;height:100%;object-fit:contain;transition:transform .4s;}
.product-card:hover .product-img img{transform:scale(1.04);}
.product-info{padding:20px;}
.product-name{
  font-size:15px;color:var(--ink);font-weight:700;
  letter-spacing:.5px;margin-bottom:8px;
}
.product-desc{
  font-size:13px;color:var(--text-dim);line-height:1.7;min-height:60px;
}

/* ============ 深色背景模块 ============ */
.dark-section .section-title{color:#fff;}
.dark-section .section-title::after{background:var(--red);}
.dark-section .section-sub{color:#8a92a0;}
.dark-section .cat-tab{background:rgba(255,255,255,.08);color:#a8b0bc;border:none;}
.dark-section .cat-tab.active{background:var(--red);color:#fff;}
.dark-section .product-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);}
.dark-section .product-name{color:#fff;}
.dark-section .product-desc{color:#8a92a0;}
.dark-section .adv-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);}
.dark-section .adv-card h3{color:#fff;}
.dark-section .adv-card p{color:#8a92a0;}
.dark-section .adv-icon{background:rgba(255,255,255,.1);}
.dark-section .nm-feature{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);}
.dark-section .nm-info h3{color:#fff;}
.dark-section .nm-info p{color:#8a92a0;}
.dark-section .nm-item{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);}
.dark-section .nm-txt h4{color:#fff;}

/* ============ 描边按钮 ============ */
.btn-outline{
  display:inline-block;
  width:max-content;
  border:1px solid #ffffff;
  color:#ffffff;
  padding:12px 32px;
  font-size:14px;
  font-weight:600;
  letter-spacing:2px;
  transition:.25s;
  background:transparent;
}
.btn-outline:hover{background:var(--red);color:var(--white);border-color:var(--red);}

/* ============ 新闻中心 ============ */
.news{background:var(--bg);}
.news-more{text-align:center;margin-top:44px;}

/* ============ 页脚 ============ */
.site-footer{
  background:#0e1116;border-top:3px solid var(--red);
}
.footer-inner{
  max-width:var(--maxw);margin:0 auto;padding:68px 24px 48px;
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;
}
.f-brand .footer-logo{display:inline-block;margin-bottom:20px;}
.footer-logo img{height:64px;display:block;}
.f-brand p{color:#a8b0bc;font-size:14px;line-height:1.9;max-width:340px;}
.f-social{display:flex;gap:12px;margin-top:24px;}
.fs-ico{
  width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;
  color:#9aa1ad;background:rgba(255,255,255,.08);transition:.25s;
  border-radius:6px;
}
.fs-ico:hover{color:#fff;background:var(--red);}
.f-col h4{
  color:#fff;font-size:15px;margin-bottom:22px;position:relative;
  letter-spacing:1px;padding-left:12px;
}
.f-col h4::before{
  content:"";position:absolute;left:0;top:2px;bottom:2px;width:3px;background:var(--red);
}
.f-col-title{
  color:#fff;font-size:15px;margin-bottom:22px;position:relative;
  letter-spacing:1px;padding-left:12px;
}
.f-col-title::before{
  content:"";position:absolute;left:0;top:2px;bottom:2px;width:3px;background:var(--red);
}
.f-link{
  display:block;color:#b8bec8;font-size:14px;padding:11px 0;
  border-bottom:1px dashed rgba(255,255,255,.08);transition:.2s;
}
.f-link:hover{color:var(--red);}
.f-contact-item{
  display:flex;align-items:flex-start;gap:10px;color:#b8bec8;font-size:14px;
  margin-bottom:16px;line-height:1.6;
}
.f-contact-item svg{color:var(--red);flex-shrink:0;margin-top:2px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);padding:24px 24px;text-align:center;
  color:#5a6270;font-size:12px;letter-spacing:1px;
}

/* 右侧悬浮图标组 */
.float-actions{
  position:fixed;right:20px;bottom:80px;display:flex;flex-direction:column;gap:10px;z-index:90;
}
.float-item{
  width:42px;height:42px;border-radius:50%;background:var(--red);
  display:flex;align-items:center;justify-content:center;color:#fff;
  transition:.25s;cursor:pointer;box-shadow:0 4px 12px rgba(200,16,46,.3);
  position:relative;
}
.float-item:hover{background:var(--red-dark);}
.float-item .float-label{
  position:absolute;right:52px;top:50%;transform:translateY(-50%);
  background:var(--red);color:#fff;font-size:12px;white-space:nowrap;
  padding:6px 12px;border-radius:4px;opacity:0;visibility:hidden;
  transition:.25s;pointer-events:none;
}
.float-item:hover .float-label{opacity:1;visibility:visible;right:54px;}
.back-top{font-size:18px;}

/* ============ 内页顶部 Banner ============ */
.page-banner{
  position:relative;margin-top:82px;height:320px;
  background-size:cover;background-position:center;
  display:flex;align-items:center;justify-content:center;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(rgba(10,12,16,.7),rgba(10,12,16,.85));
}
.page-banner .banner-inner{position:relative;z-index:2;text-align:center;padding:0 24px;}
.page-banner h1{font-size:38px;font-weight:900;color:var(--white);letter-spacing:4px;}
.page-banner .banner-en{color:var(--red);letter-spacing:6px;font-size:13px;font-weight:600;margin-top:12px;}
.breadcrumb{
  position:relative;z-index:2;margin-top:18px;color:#9aa1ad;font-size:12px;letter-spacing:1px;
}
.breadcrumb a{color:#9aa1ad;transition:.2s;}
.breadcrumb a:hover{color:var(--red);}
.breadcrumb .sep{margin:0 8px;color:#5a6270;}

/* ============ 内页内容区 ============ */
.page-content{padding:72px 24px;background:var(--bg);}
.page-content-inner{max-width:var(--maxw);margin:0 auto;}
.page-section-title{
  font-size:26px;font-weight:800;color:var(--ink);
  margin-bottom:28px;position:relative;padding-left:16px;letter-spacing:1px;
}
.page-section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;background:var(--red);
}
.page-text{color:var(--text-dim);font-size:15px;line-height:1.9;margin-bottom:16px;}
.page-list li{
  position:relative;padding:12px 0 12px 24px;color:var(--text-dim);
  border-bottom:1px solid var(--line);font-size:14px;
}
.page-list li::before{
  content:"";position:absolute;left:0;top:19px;width:8px;height:8px;
  background:var(--red);
}
.page-list li:last-child{border-bottom:none;}

/* 新闻列表页 */
.news-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:40px;
}
.news-card{
  background:var(--bg-2);overflow:hidden;
  transition:transform .3s,box-shadow .3s;border-radius:12px;
  display:flex;flex-direction:column;
  box-shadow:0 2px 12px rgba(20,23,28,.06);
}
.news-card:hover{
  transform:translateY(-6px);box-shadow:0 20px 40px rgba(20,23,28,.12);
}
.nc-img{
  height:240px;background-size:cover;background-position:center;
  transition:transform .4s;
}
.news-card:hover .nc-img{transform:scale(1.05);}
.nc-body{padding:28px 28px 18px;flex:1;}
.nc-body h3{
  font-size:18px;font-weight:700;color:var(--ink);line-height:1.5;
  margin-bottom:12px;transition:color .2s;
}
.news-card:hover .nc-body h3{color:var(--red);}
.nc-body p{
  font-size:14px;color:var(--text-dim);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.nc-date{
  padding:16px 28px;font-size:13px;color:var(--text-dim);letter-spacing:1px;
}
@media(max-width:992px){
  .news-grid{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:640px){
  .news-grid{grid-template-columns:1fr;}
}

/* 产品详情页 */
.detail-wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;
  background:var(--bg-2);border:1px solid var(--line);padding:36px;
}
.detail-left{min-width:0;}
.detail-img{
  background:#f4f5f7;display:flex;align-items:center;justify-content:center;padding:24px;
  border:1px solid var(--line);
}
.detail-img img{width:100%;object-fit:contain;}
.thumb-strip{
  display:flex;gap:10px;margin-top:12px;overflow-x:auto;padding-bottom:6px;
  scrollbar-width:thin;
}
.thumb-strip img{
  width:80px;height:60px;object-fit:cover;border:2px solid var(--line);
  border-radius:6px;cursor:pointer;flex-shrink:0;transition:.2s;
}
.thumb-strip img:hover{border-color:var(--red);}
.thumb-strip img.active{border-color:var(--red);}
.detail-info{min-width:0;}
.detail-info .page-section-title{margin-top:0;}

/* 联系我们页 */
.contact-block{background:var(--bg-2);border:1px solid var(--line);padding:32px 36px;}
.contact-block .page-text{margin-bottom:14px;}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;right:28px;bottom:28px;z-index:90;
  width:46px;height:46px;background:var(--ink);color:var(--white);
  font-size:20px;display:flex;align-items:center;justify-content:center;
  border-radius:50%;cursor:pointer;opacity:0;visibility:hidden;
  transition:opacity .25s,visibility .25s,transform .25s,background .25s;
}
.back-top.show{opacity:1;visibility:visible;}
.back-top:hover{background:var(--red);transform:scale(1.6);}

/* ============ 响应式 ============ */
@media(max-width:1024px){
  .product-grid{grid-template-columns:repeat(2,1fr);}
  .about-wrap{grid-template-columns:1fr;gap:36px;}
  .about-visual{height:340px;}
}

/* ============ 关于我们页 ============ */
.about-detail{
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start;
  margin-bottom:48px;
}
.ad-left h2{margin-bottom:14px;}
.ad-block{
  background:var(--bg-2);border:1px solid var(--line);border-left:3px solid var(--red);
  padding:18px 22px;margin-bottom:16px;
}
.ad-block h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:8px;letter-spacing:1px;}
.ad-block p{font-size:14px;color:var(--text-dim);line-height:1.8;}
.ad-factory{
  height:260px;background-size:cover;background-position:center;
  margin-top:8px;border:1px solid var(--line);
}
.ad-right{position:sticky;top:92px;}
.qc-slogan{
  font-size:22px;font-weight:800;color:var(--ink);letter-spacing:1px;
  margin:6px 0 24px;position:relative;padding-left:14px;
}
.qc-slogan::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:4px;background:var(--red);}
.qc-list{display:grid;gap:12px;}
.qc-list li{
  position:relative;padding:16px 18px 16px 46px;
  background:var(--bg-2);border:1px solid var(--line);
  color:var(--text-dim);font-size:14px;line-height:1.8;
}
.qc-list li::before{
  content:"✓";position:absolute;left:16px;top:14px;color:var(--red);font-weight:700;font-size:15px;
}
@media(max-width:768px){
  .about-detail{grid-template-columns:1fr;gap:28px;}
  .ad-right{position:static;}
  .ad-factory{height:200px;}
  .about-text-block{grid-template-columns:1fr !important;}
}

/* ============ 联系我们页 ============ */
.contact-card{
  display:grid;grid-template-columns:1fr 1fr;
  background:var(--bg-2);border:1px solid var(--line);
  border-radius:8px;overflow:hidden;box-shadow:0 12px 40px rgba(20,23,28,.08);
}
.contact-card > .contact-info{
  padding:44px 48px;
  background:linear-gradient(135deg,#14171c 0%,#1e2229 100%);
}
.ci-item{
  display:flex;align-items:flex-start;gap:16px;margin-bottom:24px;
}
.ci-item:last-of-type{margin-bottom:0;}
.ci-icon{
  width:40px;height:40px;background:rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:center;border-radius:6px;
  flex-shrink:0;
}
.ci-icon svg{stroke:#e84a5f;}
.ci-label{font-size:12px;color:rgba(255,255,255,.5);margin-bottom:4px;letter-spacing:1px;}
.ci-value{font-size:15px;color:#fff;font-weight:500;line-height:1.5;}
.contact-card > .contact-form-wrap{
  padding:44px 48px;background:var(--bg-2);
}
.map-box{
  border:1px solid rgba(255,255,255,.1);overflow:hidden;border-radius:6px;
  margin-top:32px;
}
.map-box .world-map{display:block;width:100%;height:200px;object-fit:cover;opacity:.7;}
.cf-title{
  font-size:18px;font-weight:700;color:var(--ink);margin-bottom:8px;
  position:relative;padding-left:14px;letter-spacing:1px;
}
.cf-title::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:4px;background:var(--red);}
.cf-desc{font-size:13px;color:var(--text-dim);margin-bottom:28px;}
.contact-form{display:grid;gap:14px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.contact-form input,.contact-form textarea{
  width:100%;padding:14px 16px;border:1px solid var(--line);
  font-size:14px;color:var(--text);background:var(--bg);outline:none;transition:.2s;
  font-family:inherit;border-radius:4px;
}
.contact-form input:focus,.contact-form textarea:focus{
  border-color:var(--red);background:var(--bg-2);
  box-shadow:0 0 0 3px rgba(200,16,46,.08);
}
.contact-form textarea{resize:vertical;}
.contact-form .btn-primary{
  width:100%;text-align:center;border:none;cursor:pointer;border-radius:4px;
  margin-top:8px;padding:15px;font-size:15px;letter-spacing:2px;
}
@media(max-width:768px){
  .contact-card{grid-template-columns:1fr;}
  .contact-card > .contact-info{border-right:none;border-bottom:1px solid var(--line);}
  .form-row{grid-template-columns:1fr;}
}
}

/* 关于我们页品控图 */
.qc-photos{
  height:220px;background-size:cover;background-position:center;
  margin-top:16px;border:1px solid var(--line);
}
.qc-shop{
  height:120px;background-size:cover;background-position:center;
  margin-top:12px;border:1px solid var(--line);
}

/* ============ 新闻详情页 ============ */
.nd-wrap{max-width:var(--maxw);margin:0 auto;}
.nd-head{margin-bottom:22px;}
.nd-head .page-section-title{margin-bottom:10px;}
.nd-date{
  display:inline-block;color:var(--red);font-size:13px;letter-spacing:1px;
  border-left:3px solid var(--red);padding-left:10px;margin-bottom:6px;
}
.nd-img{
  height:400px;background-size:cover;background-position:center;
  margin-bottom:28px;border:1px solid var(--line);
}
.nd-prevnext{
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
}
.nd-prevnext a{
  color:var(--text-dim);font-size:14px;transition:.2s;padding:10px 0;
}
.nd-prevnext a:hover{color:var(--red);}
@media(max-width:768px){
  .nd-img{height:220px;}
}

/* ============ 产品详情页 ============ */
.dt-sub{
  font-size:15px;font-weight:700;color:var(--ink);
  margin:24px 0 12px;position:relative;padding-left:12px;letter-spacing:1px;
}
.dt-sub::before{content:"";position:absolute;left:0;top:3px;bottom:3px;width:3px;background:var(--red);}
.dt-sub:first-child{margin-top:0;}
.dt-spec{
  margin-top:40px;border:1px solid var(--line);
  padding:28px 32px;background:var(--bg-2);
}
.dt-spec img{max-width:100%;height:auto;display:block;margin:12px 0;}
.dt-spec p{font-size:14px;line-height:1.8;color:#555;margin-bottom:12px;}
.dt-spec .dt-sub{font-size:18px;margin-top:0;margin-bottom:20px;}
.spec-table{width:100%;border-collapse:collapse;}
.spec-table tr{border-bottom:1px solid var(--line);}
.spec-table tr:last-child{border-bottom:none;}
.spec-table td{padding:12px 10px;font-size:14px;color:var(--text-dim);line-height:1.6;}
.spec-table .spec-k{width:140px;color:var(--ink);font-weight:600;}
.spec-table tr:nth-child(even){background:var(--bg);}
.dt-contact{margin-top:18px;}
.detail-btns{display:flex;gap:16px;margin-top:28px;flex-wrap:wrap;}
.detail-btns .btn-red,.detail-btns .btn-outline{padding:14px 32px;font-size:15px;font-weight:600;width:max-content;}
.btn-red{display:inline-block;background:var(--red);color:#fff;border:1px solid var(--red);padding:14px 32px;font-size:15px;font-weight:600;cursor:pointer;transition:.25s;}
.btn-red:hover{background:var(--red-dark);border-color:var(--red-dark);}
.detail-btns .btn-outline{border:1px solid var(--ink);color:var(--ink);background:transparent;}
.detail-btns .btn-outline:hover{background:var(--ink);color:#fff;border-color:var(--ink);}

/* 询价弹窗 */
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:999;display:none;align-items:center;justify-content:center;padding:20px;}
.modal-mask.show{display:flex;}
.modal-box{background:#fff;border-radius:12px;padding:36px;width:440px;max-width:100%;position:relative;box-shadow:0 20px 60px rgba(0,0,0,.3);}
.modal-title{font-size:22px;font-weight:800;color:var(--ink);margin-bottom:6px;}
.modal-sub{font-size:14px;color:#888;margin-bottom:24px;}
.modal-form{display:flex;flex-direction:column;gap:12px;}
.modal-form input,.modal-form textarea{padding:12px 14px;border:1px solid var(--line);border-radius:8px;font-size:14px;outline:none;font-family:inherit;}
.modal-form input:focus,.modal-form textarea:focus{border-color:var(--red);}
.modal-close{position:absolute;top:14px;right:18px;font-size:26px;color:#aaa;cursor:pointer;line-height:1;}
.modal-close:hover{color:var(--ink);}
@media(max-width:768px){
  .dt-spec{padding:20px;}
  .spec-table .spec-k{width:96px;}
}

/* ============ 首页新闻：左大图右列表 ============ */
.news-mag{
  display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:stretch;
  max-width:var(--maxw);margin:0 auto;
}
.nm-feature{
  display:block;border:none;
  background:var(--bg-2);transition:.25s;border-radius:12px;overflow:hidden;
}
.nm-feature:hover{box-shadow:0 20px 40px rgba(0,0,0,.2);}
.nm-img{height:300px;background-size:cover;background-position:center;}
.nm-info{padding:24px 26px 28px;}
.nm-info .news-date{color:var(--red);font-size:12px;letter-spacing:1px;}
.nm-info h3{font-size:20px;font-weight:700;color:var(--ink);margin:10px 0 12px;line-height:1.5;}
.nm-info p{font-size:14px;color:var(--text-dim);line-height:1.8;}
.nm-more{
  display:inline-block;margin-top:16px;color:var(--red);font-size:14px;font-weight:600;
}
.nm-list{display:grid;gap:12px;grid-template-rows:repeat(4,1fr);}
.nm-item{
  display:flex;align-items:center;gap:16px;padding:14px;
  background:var(--bg-2);border:1px solid var(--line);transition:.2s;
  border-radius:10px;
}
.nm-item:hover{border-color:var(--ink);}
.nm-thumb{width:110px;height:78px;flex-shrink:0;background-size:cover;background-position:center;border-radius:6px;}
.nm-txt{flex:1;min-width:0;}
.nm-txt h4{font-size:14px;font-weight:600;color:var(--ink);line-height:1.5;margin-bottom:8px;}
.nm-txt .news-date{color:var(--red);font-size:12px;letter-spacing:1px;}
@media(max-width:768px){
  .news-mag{grid-template-columns:1fr;gap:20px;}
  .nm-img{height:200px;}
  .nm-thumb{width:90px;height:66px;}
}

/* ============ 服务支持页 ============ */
.service-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:48px;
}
.service-card{
  background:var(--bg-2);border:1px solid var(--line);padding:36px 32px;
  transition:border-color .25s,transform .25s,box-shadow .25s;
  border-radius:6px;
}
.service-card:hover{
  border-color:var(--red);transform:translateY(-4px);
  box-shadow:0 12px 30px rgba(20,23,28,.08);
}
.sc-icon{
  width:56px;height:56px;background:linear-gradient(135deg,rgba(200,16,46,.08),rgba(200,16,46,.04));
  display:flex;align-items:center;justify-content:center;border-radius:8px;
  margin-bottom:20px;
}
.service-card h3{
  font-size:18px;font-weight:700;color:var(--ink);margin-bottom:12px;
  letter-spacing:1px;
}
.service-card p{font-size:14px;color:var(--text-dim);line-height:1.8;margin-bottom:16px;}
.service-card ul{margin-top:8px;}
.service-card ul li{
  position:relative;padding:8px 0 8px 20px;font-size:14px;color:var(--text-dim);
  border-bottom:1px solid var(--line);
}
.service-card ul li::before{
  content:"";position:absolute;left:0;top:16px;width:6px;height:6px;background:var(--red);
}
.service-card ul li:last-child{border-bottom:none;}
@media(max-width:992px){
  .service-grid{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:640px){
  .service-grid{grid-template-columns:1fr;}
}

/* FAQ */
.faq-list{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:start;}
.faq-item{
  background:var(--bg-2);border:1px solid var(--line);margin-bottom:0;
}
.faq-q{
  padding:18px 24px;font-size:15px;font-weight:600;color:var(--ink);
  cursor:pointer;display:flex;justify-content:space-between;align-items:center;
  transition:background .2s;
}
.faq-q:hover{background:var(--bg);}
.faq-q::after{content:"+";font-size:20px;color:var(--red);font-weight:300;}
.faq-item.open .faq-q::after{content:"−";}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.faq-item.open .faq-a{max-height:300px;}
.faq-a-inner{
  padding:0 24px 20px;font-size:14px;color:var(--text-dim);line-height:1.9;
  border-top:1px solid var(--line);padding-top:16px;
}

/* 下载列表 */
.download-list{
  max-width:var(--maxw);margin:0 auto;
  display:grid;grid-template-columns:1fr 1fr;gap:10px;
}
.download-item{
  display:flex;align-items:center;justify-content:space-between;
  background:var(--bg-2);border:1px solid var(--line);padding:18px 24px;
  transition:border-color .2s;
}
.download-item:hover{border-color:var(--ink);}
.download-item .dl-info{display:flex;align-items:center;gap:14px;}
.download-item .dl-name{font-size:15px;font-weight:600;color:var(--ink);}
.download-item .dl-type{
  font-size:11px;color:var(--red);border:1px solid var(--red);padding:2px 8px;letter-spacing:1px;
}
.download-item .dl-btn{
  font-size:13px;color:var(--text-dim);transition:color .2s;
}
.download-item .dl-btn:hover{color:var(--red);}
@media(max-width:768px){
  .download-list{grid-template-columns:1fr;}
}

/* ============ 应用领域页 ============ */
.industry-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px;
  max-width:var(--maxw);margin-left:auto;margin-right:auto;
}
.industry-card{
  position:relative;height:260px;background-size:cover;background-position:center;
  overflow:hidden;border-radius:4px;cursor:pointer;
  transition:transform .35s ease,box-shadow .35s ease;
}
.industry-card::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,0,0,0) 45%,rgba(0,0,0,.65) 100%);
  transition:background .35s ease;
}
.industry-card:hover{
  transform:scale(1.04);
  box-shadow:0 16px 40px rgba(20,23,28,.25);
  z-index:3;
}
.industry-card:hover::before{
  background:linear-gradient(180deg,rgba(20,23,28,.35) 0%,rgba(0,0,0,.85) 100%);
}
.ic-overlay{
  position:absolute;left:0;right:0;bottom:0;padding:20px;z-index:2;
}
.ic-overlay h3{
  font-size:16px;font-weight:700;color:#fff;margin-bottom:0;letter-spacing:1px;
  display:flex;align-items:center;gap:8px;
  transition:margin-bottom .35s ease;
}
.ic-overlay h3 .ic-icon{
  font-style:none;display:flex;align-items:center;justify-content:center;
  line-height:0;
}
.ic-overlay p{
  font-size:12px;color:rgba(255,255,255,.85);line-height:1.7;
  margin-top:0;max-height:0;opacity:0;overflow:hidden;
  transition:max-height .35s ease,opacity .35s ease,margin-top .35s ease;
}
.industry-card:hover .ic-overlay h3{margin-bottom:10px;}
.industry-card:hover .ic-overlay p{max-height:120px;opacity:1;margin-top:10px;}
@media(max-width:992px){
  .industry-grid{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:640px){
  .industry-grid{grid-template-columns:1fr;}
}

/* ============ 首页核心优势 ============ */
.adv-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  max-width:var(--maxw);margin:0 auto;padding:0 24px;
}
.adv-card{
  background:var(--bg-2);border:1px solid var(--line);padding:36px 28px;
  text-align:center;border-radius:6px;transition:transform .25s,box-shadow .25s;
}
.adv-card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(20,23,28,.08);}
.adv-icon{
  width:64px;height:64px;background:linear-gradient(135deg,rgba(200,16,46,.08),rgba(200,16,46,.03));
  display:flex;align-items:center;justify-content:center;border-radius:10px;
  margin:0 auto 20px;
}
.adv-card h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:10px;letter-spacing:1px;}
.adv-card p{font-size:13px;color:var(--text-dim);line-height:1.8;}
@media(max-width:992px){.adv-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.adv-grid{grid-template-columns:1fr;}}

/* ============ 首页应用领域速览 ============ */
.ind-cards{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  max-width:var(--maxw);margin:0 auto;padding:0 24px;
}
.ind-card{
  position:relative;height:180px;background-size:cover;background-position:center;
  border-radius:6px;overflow:hidden;display:block;
  transition:transform .3s,box-shadow .3s;
}
.ind-card:hover{transform:scale(1.03);box-shadow:0 12px 30px rgba(20,23,28,.15);}
.ind-card::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,0,0,0) 40%,rgba(0,0,0,.75) 100%);
}
.ind-overlay{
  position:absolute;left:0;right:0;bottom:0;padding:16px;z-index:2;
}
.ind-overlay h3{
  font-size:15px;font-weight:700;color:#fff;letter-spacing:1px;
  padding-left:8px;border-left:3px solid var(--red);
}
@media(max-width:992px){.ind-cards{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.ind-cards{grid-template-columns:1fr;}}

/* 联系卡片hover效果 */
.contact-hover-card{
  transition:transform .3s,box-shadow .3s;
  cursor:pointer;
}
.contact-hover-card:hover{
  transform:translateY(-6px);
  box-shadow:0 20px 40px rgba(200,16,46,.12) !important;
}