/* XZ Fastener 站点样式。纯静态，零外部依赖，字体使用系统栈回退。 */
:root{
  --navy:#1a4177; --navy-d:#132f56; --navy-dd:#0b2140;
  --blue:#0066b4; --blue-l:#2f8ed6;
  --green:#39b54a;
  --ink:#1f2124; --text:#515151; --text2:#4c6066; --muted:#69727d;
  --line:#d0d3d4; --line2:#e6e9ec; --bg:#ffffff; --bg2:#f2f4f6; --bg3:#f6f8fa;
  --gold:#ffb703;
  --hdr:86px; --topbar:44px;
  --font-h:"Montserrat","Segoe UI",-apple-system,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
  --font-b:Roboto,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
  --wrap:1240px; --radius:10px; --shadow:0 6px 22px rgba(20,40,70,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-b);color:var(--text);background:var(--bg);
  font-size:16px;line-height:1.7;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{font-family:var(--font-h);color:var(--ink);margin:0 0 .5em;line-height:1.28;font-weight:700}
p{margin:0 0 1em}
button{font:inherit;cursor:pointer}
:focus-visible{outline:3px solid var(--blue-l);outline-offset:2px}
.skip{position:absolute;left:-9999px;top:0;background:var(--navy);color:#fff;padding:10px 16px;z-index:999}
.skip:focus{left:8px;top:8px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- 顶栏 ---------- */
.topbar{background:var(--navy-d);color:#cfe0f2;font-size:13px;min-height:var(--topbar)}
.topbar .wrap{display:flex;align-items:center;justify-content:flex-end;gap:22px;min-height:var(--topbar);flex-wrap:wrap}
.topbar a{color:#cfe0f2;display:inline-flex;align-items:center;gap:7px}
.topbar a:hover{color:#fff}
.topbar svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;flex:none}

/* ---------- 头部 ---------- */
.header{position:relative;z-index:60;background:#fff;box-shadow:0 2px 10px rgba(20,40,70,.09)}
.hdr-in{display:flex;align-items:center;gap:24px;height:var(--hdr)}
.logo{display:flex;align-items:center;flex:none}
.logo img{height:52px;width:auto}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto;min-width:0}
.nav ul{display:flex;align-items:center;gap:2px;margin:0;padding:0;list-style:none;flex-wrap:nowrap}
.nav ul>li{position:relative}
.nav ul>li>a{display:block;padding:12px 13px;font-family:var(--font-h);font-size:14px;font-weight:600;
  color:var(--ink);border-radius:6px;white-space:nowrap}
.nav ul>li>a:hover,.nav ul>li.open>a{color:var(--blue)}
.nav ul>li>a::after{content:"";display:block;height:2px;background:var(--blue);width:0;transition:width .25s;
  margin-top:3px;border-radius:2px}
.nav ul>li>a:hover::after,.nav ul>li.open>a::after{width:100%}
.drop{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);min-width:820px;
  background:#fff;box-shadow:0 12px 34px rgba(15,35,65,.18);border-radius:12px;padding:22px 24px;
  display:none;grid-template-columns:repeat(3,1fr);gap:22px}
.nav ul>li.open .drop{display:grid}
.drop h4{font-size:12px;letter-spacing:1.4px;text-transform:uppercase;color:var(--blue);margin:0 0 10px}
.drop a{display:block;padding:6px 0;font-size:14px;color:var(--text2)}
.drop a:hover{color:var(--blue)}
.drop .all{grid-column:1/-1;border-top:1px solid var(--line2);padding-top:12px;margin-top:2px}
.drop .all a{font-weight:700;color:var(--navy)}
.hdr-cta{display:flex;align-items:center;gap:12px;flex:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:6px;
  font-family:var(--font-h);font-size:14px;font-weight:700;letter-spacing:.4px;border:2px solid transparent;
  transition:.22s;white-space:nowrap;cursor:pointer}
.btn-pri{background:var(--blue);color:#fff;border-color:var(--blue)}
.btn-pri:hover{background:var(--navy);border-color:var(--navy)}
.btn-out{background:transparent;color:#fff;border-color:rgba(255,255,255,.85)}
.btn-out:hover{background:#fff;color:var(--navy)}
.btn-navy{background:var(--navy);color:#fff;border-color:var(--navy)}
.btn-navy:hover{background:var(--blue);border-color:var(--blue)}
.btn-lg{padding:15px 34px;font-size:15px}
.burger{display:none;width:44px;height:44px;border:0;background:transparent;padding:0}
.burger span{display:block;height:3px;background:var(--ink);border-radius:2px;margin:5px 0;transition:.25s}
body.menu-open .burger span:nth-child(1){transform:translateY(8px) rotate(45deg)}
body.menu-open .burger span:nth-child(2){opacity:0}
body.menu-open .burger span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* 移动端抽屉 */
.drawer{position:fixed;inset:0 0 0 auto;width:min(88vw,380px);background:#fff;z-index:80;
  transform:translateX(100%);transition:transform .35s ease;overflow-y:auto;visibility:hidden;
  box-shadow:-6px 0 28px rgba(15,35,65,.2);padding:22px}
body.menu-open .drawer{transform:none;visibility:visible}
.drawer a{display:block;padding:13px 0;border-bottom:1px solid var(--line2);font-weight:600;color:var(--ink);visibility:inherit}
.drawer .sub{padding-left:16px;font-weight:500;color:var(--text2);font-size:14px}
.scrim{position:fixed;inset:0;background:rgba(10,25,45,.45);z-index:70;opacity:0;visibility:hidden;transition:.3s}
body.menu-open .scrim{opacity:1;visibility:visible}

/* ---------- Hero 轮播 ---------- */
.hero{position:relative;min-height:min(660px,86vh);background:var(--navy-dd);color:#fff;overflow:hidden}
.hero .sw{position:absolute;inset:0}
.hero .slide{position:absolute;inset:0;opacity:0;transition:opacity .9s ease;pointer-events:none}
.hero .slide.on{opacity:1;pointer-events:auto}
.hero .slide img{width:100%;height:100%;object-fit:cover}
.hero .mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,26,48,.92) 0%,rgba(9,26,48,.62) 55%,rgba(9,26,48,.28) 100%)}
.hero .txt{position:relative;z-index:3;max-width:720px;padding:96px 0 120px;pointer-events:none}
.hero .txt a,.hero .txt button{pointer-events:auto}
.hero .eyebrow{font-family:var(--font-h);font-size:13px;letter-spacing:3px;color:#8fc4f2;text-transform:uppercase;margin-bottom:14px}
.hero h1{color:#fff;font-size:clamp(30px,4.4vw,54px);font-weight:800;letter-spacing:-.5px;margin-bottom:16px}
.hero p{font-size:clamp(15px,1.35vw,19px);color:#d5e6f7;margin-bottom:30px;max-width:600px}
.hero .btns{display:flex;gap:14px;flex-wrap:wrap}
.caro-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:52px;height:52px;border-radius:50%;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.4);color:#fff;display:grid;place-items:center;transition:.2s}
.caro-arrow:hover{background:rgba(255,255,255,.34)}
.caro-arrow svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2.4}
.caro-arrow.prev{left:16px}.caro-arrow.next{right:16px}
.caro-dots{position:absolute;z-index:5;left:0;right:0;bottom:max(22px,calc(100% - (100svh - var(--hdr)) + 22px));
  display:flex;justify-content:center;gap:10px;pointer-events:auto}
.caro-dots button{width:13px;height:13px;border-radius:50%;border:2px solid rgba(255,255,255,.75);background:transparent;padding:0}
.caro-dots button.on{background:var(--gold);border-color:var(--gold)}

/* ---------- 通用板块 ---------- */
.sec{padding:72px 0}
.sec.tint{background:var(--bg2)}
.sec.dark{background:var(--navy-dd);color:#c8d8ea}
.sec.dark h2,.sec.dark h3{color:#fff}
.sec-head{text-align:center;max-width:760px;margin:0 auto 44px}
.sec-head h2{font-size:clamp(24px,3vw,36px);position:relative;padding-bottom:16px}
.sec-head h2::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:64px;height:4px;
  background:var(--blue);border-radius:3px}
.sec-head p{color:var(--text2);margin:14px 0 0}

/* ---------- 分类圆形图标 ---------- */
.catgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.catgrid.eight{grid-template-columns:repeat(4,1fr)}
.caticon{text-align:center;display:block;min-width:0}
.caticon .pic{width:170px;height:170px;margin:0 auto 16px;border-radius:50%;overflow:hidden;background:#fff;
  box-shadow:var(--shadow);border:3px solid #fff;transition:.28s;display:grid;place-items:center}
.caticon .pic img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.caticon:hover .pic{border-color:var(--blue);box-shadow:0 10px 26px rgba(0,102,180,.24)}
.caticon:hover .pic img{transform:scale(1.07)}
.caticon h3{font-size:17px;margin:0}

/* ---------- 产品中心 4 卡 ---------- */
.pgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;min-width:0}
.pcard{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;
  flex-direction:column;min-width:0;transition:.28s}
.pcard:hover{transform:translateY(-6px);box-shadow:0 16px 34px rgba(20,40,70,.16)}
.pcard .pic{aspect-ratio:4/3;background:var(--bg2);overflow:hidden}
.pcard .pic img{width:100%;height:100%;object-fit:cover}
.pcard .bd{padding:18px 20px 22px;flex:1;display:flex;flex-direction:column}
.pcard h3{font-size:16px;margin:0 0 8px}
.pcard p{font-size:14px;color:var(--text2);margin:0 0 14px;flex:1}
.pcard .more{font-size:13px;font-weight:700;color:var(--blue);display:inline-flex;align-items:center;gap:6px}
.pcard .more svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2.4}

/* ---------- 应用领域 ---------- */
.appgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.appcard{background:linear-gradient(150deg,#2f9c46,#39b54a 55%,#57c766);color:#fff;border-radius:12px;padding:34px 28px;
  min-height:180px;display:flex;flex-direction:column;justify-content:flex-end;position:relative;overflow:hidden;min-width:0}
.appcard::before{content:"";position:absolute;right:-40px;top:-40px;width:150px;height:150px;border-radius:50%;
  background:rgba(255,255,255,.13)}
.appcard h3{color:#fff;font-size:19px;margin:0 0 8px;position:relative}
.appcard p{color:rgba(255,255,255,.92);font-size:14px;margin:0;position:relative}

/* ---------- 关于 + 数字 ---------- */
.aboutwrap{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;min-width:0}
.aboutwrap .pic{border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.aboutwrap .pic img{width:100%}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:34px}
.stat{background:#fff;border:1px solid var(--line2);border-radius:10px;padding:18px 12px;text-align:center}
.stat b{display:block;font-family:var(--font-h);font-size:clamp(22px,2.6vw,32px);color:var(--navy);line-height:1.1}
.stat span{font-size:12px;color:var(--muted);display:block;margin-top:6px;line-height:1.4}

/* ---------- 优势 ---------- */
.advgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.adv{text-align:center;padding:30px 20px;background:#fff;border-radius:12px;box-shadow:var(--shadow);min-width:0}
.adv .ic{width:74px;height:74px;border-radius:50%;background:rgba(0,102,180,.1);color:var(--blue);
  display:grid;place-items:center;margin:0 auto 16px}
.adv .ic svg{width:34px;height:34px;fill:none;stroke:currentColor;stroke-width:2}
.adv h3{font-size:16px;margin:0 0 8px}
.adv p{font-size:14px;margin:0;color:var(--text2)}

/* ---------- 车间图廊 ---------- */
.gal{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.gal a{display:block;border-radius:8px;overflow:hidden;aspect-ratio:4/3;background:var(--bg2)}
.gal img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.gal a:hover img{transform:scale(1.06)}

/* ---------- 客户评价 ---------- */
.tst{position:relative;overflow:hidden}
.tst-track{display:flex;transition:transform .6s cubic-bezier(.4,0,.2,1)}
.tst-item{flex:0 0 33.333%;padding:0 12px;min-width:0}
.tst-card{background:#fff;border-radius:12px;padding:28px 26px;box-shadow:var(--shadow);height:100%;
  display:flex;flex-direction:column;min-width:0}
.tst-card .q{color:var(--blue);opacity:.5;margin-bottom:12px}
.tst-card .q svg{width:30px;height:30px;fill:currentColor}
.tst-card p{font-size:15px;color:var(--text2);flex:1}
.tst-card .who{display:flex;align-items:center;gap:12px;margin-top:18px;border-top:1px solid var(--line2);padding-top:16px}
.tst-card .who .av{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--navy));
  color:#fff;display:grid;place-items:center;font-family:var(--font-h);font-weight:700;font-size:16px;flex:none}
.tst-card .who b{display:block;font-size:14px;color:var(--ink)}
.tst-card .who span{font-size:12.5px;color:var(--muted)}

/* ---------- 证书/来访轮播 ---------- */
.cert-strip{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;
  scrollbar-width:thin}
.cert-strip>*{flex:0 0 240px;scroll-snap-align:start;border-radius:10px;overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.cert-strip img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:8px;margin-bottom:12px;background:#fff;overflow:hidden}
.faq summary{cursor:pointer;padding:17px 22px;font-family:var(--font-h);font-weight:700;font-size:15.5px;
  color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:14px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;color:var(--blue);flex:none;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq .ans{padding:0 22px 20px;color:var(--text2);font-size:15px}

/* ---------- 面包屑 ---------- */
.crumb{background:var(--bg2);border-bottom:1px solid var(--line2);font-size:13.5px}
.crumb .wrap{padding:14px 20px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumb a{color:var(--blue)}
.crumb span.sep{opacity:.55}

/* ---------- 分类页布局 ---------- */
.pagelayout{display:grid;grid-template-columns:270px 1fr;gap:34px;min-width:0}
.side{position:sticky;top:calc(var(--hdr) + 18px);align-self:start;min-width:0}
.side .box{background:#fff;border:1px solid var(--line2);border-radius:10px;padding:20px;margin-bottom:18px}
.side h4{font-size:12px;letter-spacing:1.3px;text-transform:uppercase;color:var(--blue);margin:0 0 12px}
.side a{display:block;padding:7px 0;font-size:14px;color:var(--text2);border-bottom:1px solid #f2f4f6}
.side a:last-child{border-bottom:0}
.side a:hover,.side a.on{color:var(--blue);font-weight:600}
.prodgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;min-width:0}
.prod{background:#fff;border:1px solid var(--line2);border-radius:10px;overflow:hidden;display:flex;
  flex-direction:column;min-width:0;transition:.24s}
.prod:hover{border-color:var(--blue);box-shadow:0 12px 26px rgba(20,40,70,.13);transform:translateY(-4px)}
.prod .pic{aspect-ratio:4/3;background:var(--bg3);overflow:hidden}
.prod .pic img{width:100%;height:100%;object-fit:cover}
.prod .bd{padding:15px 17px 19px;flex:1;display:flex;flex-direction:column}
.prod h3{font-size:14.5px;line-height:1.45;margin:0 0 10px;font-weight:700;min-width:0}
.prod .std{font-size:12px;color:var(--blue);background:rgba(0,102,180,.08);display:inline-block;
  padding:3px 9px;border-radius:20px;margin-bottom:10px;align-self:flex-start}
.prod .more{margin-top:auto;font-size:13px;font-weight:700;color:var(--blue);display:inline-flex;align-items:center;gap:6px}
.prod .more svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2.4}

/* ---------- 产品详情 ---------- */
.pd{display:grid;grid-template-columns:1fr 1fr;gap:44px;min-width:0}
.pd .pic{border:1px solid var(--line2);border-radius:12px;overflow:hidden;background:var(--bg3)}
.pd .pic img{width:100%}
.pd h1{font-size:clamp(22px,2.6vw,32px)}
.pd .lead{color:var(--text2)}
.tbl{width:100%;border-collapse:collapse;margin:22px 0;font-size:14.5px}
.tbl th,.tbl td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}
.tbl th{background:var(--bg2);width:34%;font-family:var(--font-h);font-size:13.5px;color:var(--ink)}
.tagrow{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 0}
.tagrow a{font-size:12.5px;padding:5px 12px;border:1px solid var(--line);border-radius:20px;color:var(--text2)}
.tagrow a:hover{border-color:var(--blue);color:var(--blue)}

/* ---------- 表单 ---------- */
.form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form label{font-size:13px;color:var(--muted);display:block;margin-bottom:5px;font-weight:600}
.form input,.form textarea,.form select{width:100%;padding:12px 14px;border:1px solid var(--line);
  border-radius:6px;font:inherit;font-size:15px;background:#fff;color:var(--ink);min-width:0}
.form input:focus,.form textarea:focus,.form select:focus{border-color:var(--blue);outline:none}
.form textarea{min-height:110px;resize:vertical}
.form .full{grid-column:1/-1}
.form .btn{width:100%}
.dark-form input,.dark-form textarea{border-color:rgba(255,255,255,.25);background:rgba(255,255,255,.08);color:#fff}
.dark-form input::placeholder,.dark-form textarea::placeholder{color:rgba(255,255,255,.5)}
.dark-form label{color:#a9c4de}
.fmsg{margin-top:12px;font-size:14px;display:none}
.fmsg.ok{color:var(--green);display:block}
.fmsg.err{color:#ff9b9b;display:block}
.honey{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* ---------- 页脚 ---------- */
.foot{background:var(--navy-dd);color:#b8cbe0;font-size:14.5px}
.foot h4{color:#fff;font-size:15px;margin:0 0 16px;letter-spacing:.4px}
.foot .top{display:grid;grid-template-columns:1.25fr 1fr 1fr 1.1fr;gap:36px;padding:58px 0 44px;min-width:0}
.foot .top>div{min-width:0}
.foot a{color:#b8cbe0}
.foot a:hover{color:#fff}
.foot .top li{padding:5px 0}
.foot .contact li{display:flex;gap:10px;align-items:flex-start;padding:7px 0;line-height:1.6}
.foot .contact svg{width:16px;height:16px;fill:none;stroke:var(--blue-l);stroke-width:2;margin-top:5px;flex:none}
.foot .social{display:flex;gap:10px;margin-top:16px}
.foot .social a{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.1);display:grid;place-items:center}
.foot .social a:hover{background:var(--blue)}
.foot .social svg{width:17px;height:17px;fill:#fff;stroke:none}
.foot .bot{border-top:1px solid rgba(255,255,255,.13);padding:20px 0;font-size:13.5px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#93aecb}
.foot .brandline{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot .brandline img{height:44px;width:auto;background:#fff;border-radius:6px;padding:4px 8px}
.foot .staff{font-size:12px;opacity:.55}
.foot .staff a:hover{text-decoration:underline}

/* 浮动联系 */
.floatbar{position:fixed;right:16px;bottom:20px;z-index:65;display:flex;flex-direction:column;gap:10px}
.floatbar a{width:50px;height:50px;border-radius:50%;display:grid;place-items:center;color:#fff;box-shadow:0 6px 18px rgba(0,0,0,.22)}
.floatbar a.wa{background:#25d366}.floatbar a.mail{background:var(--blue)}.floatbar a.top{background:var(--navy)}
.floatbar svg{width:22px;height:22px;fill:#fff;stroke:none}
.floatbar a.top svg{fill:none;stroke:#fff;stroke-width:2.4}
.floatbar a.top{opacity:0;pointer-events:none;transition:.3s}
.floatbar a.top.show{opacity:1;pointer-events:auto}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1!important;transform:none!important;transition:none!important}
  .hero .slide{transition:none}
  .tst-track{transition:none}
  *{scroll-behavior:auto!important}
}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .drop{min-width:640px;grid-template-columns:repeat(2,1fr)}
  .catgrid,.catgrid.eight{grid-template-columns:repeat(4,1fr);gap:20px}
  .caticon .pic{width:130px;height:130px}
  .gal{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:1080px){
  .nav,.hdr-cta .btn{display:none}
  .burger{display:block;margin-left:auto}
  .hdr-cta{display:none}
}
@media (max-width:980px){
  :root{--hdr:70px}
  .aboutwrap,.pd{grid-template-columns:1fr;gap:30px}
  .pagelayout{grid-template-columns:1fr}
  .side{position:static}
  .pgrid,.advgrid{grid-template-columns:repeat(2,1fr)}
  .appgrid{grid-template-columns:repeat(2,1fr)}
  .prodgrid{grid-template-columns:repeat(2,1fr)}
  .foot .top{grid-template-columns:1fr 1fr;gap:28px}
  .tst-item{flex:0 0 50%}
  .hero .txt{padding:70px 0 100px}
}
@media (max-width:700px){
  .topbar .wrap{justify-content:center;gap:12px;font-size:12px}
  .sec{padding:52px 0}
  .catgrid,.catgrid.eight{grid-template-columns:repeat(2,1fr);gap:22px}
  .caticon .pic{width:118px;height:118px}
  .pgrid,.appgrid,.advgrid{grid-template-columns:1fr}
  .prodgrid{grid-template-columns:1fr}
  .gal{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .form{grid-template-columns:1fr}
  .foot .top{grid-template-columns:1fr;padding:42px 0 32px}
  .tst-item{flex:0 0 100%}
  .caro-dots{top:16px;bottom:auto}
  .caro-arrow{width:42px;height:42px}
  .hero{min-height:520px}
  .hero .btns .btn{flex:1}
  .floatbar{right:10px;bottom:12px}
  .floatbar a{width:44px;height:44px}
}

/* ================= 补充组件 ================= */

/* 视频头图 */
.video-hero{position:relative;min-height:min(680px,88vh);display:flex;align-items:center;background:var(--navy-dd);overflow:hidden}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.video-hero .mask{position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg,rgba(9,26,48,.94) 0%,rgba(9,26,48,.66) 55%,rgba(9,26,48,.30) 100%)}
.video-hero .wrap{position:relative;z-index:2;width:100%}
.video-hero .txt{position:relative;max-width:720px;padding:80px 0 96px}

/* 通用图片轮播（非头图） */
.caro{position:relative;min-height:0;background:transparent;overflow:hidden;border-radius:12px}
.caro .sw{position:relative;height:auto}
.caro .slide{position:absolute;inset:0;opacity:0;transition:opacity .8s ease;pointer-events:none;border-radius:12px;overflow:hidden}
.caro .slide.on{opacity:1;pointer-events:auto;position:relative}
.caro .slide img{width:100%;aspect-ratio:16/9;object-fit:cover}
.caro .caro-arrow{background:rgba(255,255,255,.9);border:1px solid var(--line);color:var(--navy)}
.caro .caro-arrow:hover{background:#fff}
.caro .caro-dots{bottom:14px}
.caro .caro-dots button{border-color:rgba(255,255,255,.9);background:rgba(255,255,255,.35)}
.caro .caro-dots button.on{background:var(--gold);border-color:var(--gold)}

/* 按钮行 */
.cta-row{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-top:34px}
.btn.dark{background:transparent;color:var(--navy);border-color:var(--navy)}
.btn.dark:hover{background:var(--navy);color:#fff}

/* 打勾列表 */
.tick{margin:20px 0 26px;padding:0}
.tick li{display:flex;gap:11px;align-items:flex-start;padding:7px 0;color:var(--text2);list-style:none}
.tick svg{width:20px;height:20px;color:var(--green);flex:none;margin-top:4px;stroke-width:2.6}

/* 搜索框 */
.searchbar{margin:0 0 26px;max-width:520px}
.searchbar input{width:100%;padding:13px 16px;border:1px solid var(--line);border-radius:8px;font:inherit;font-size:15px}
.searchbar input:focus{outline:none;border-color:var(--blue)}

/* 左对齐标题 */
.sec-head-left{max-width:820px;margin-bottom:34px}
.sec-head-left h1,.sec-head-left h2{font-size:clamp(24px,3vw,36px);position:relative;padding-bottom:14px}
.sec-head-left h1::after,.sec-head-left h2::after{content:"";position:absolute;left:0;bottom:0;width:64px;height:4px;
  background:var(--blue);border-radius:3px}
.sec-head-left p{color:var(--text2);margin-top:14px}
.sec-head-left .std{margin-bottom:12px}

/* 文章 */
.art{max-width:820px}
.art-body{font-size:16px;color:var(--text2)}
.art-body p{margin-bottom:1.1em}
.art .meta{font-size:13px;color:var(--muted)}

/* 联系列表 */
.contact-list{margin:22px 0;padding:0}
.contact-list li{display:flex;gap:12px;align-items:flex-start;padding:9px 0;list-style:none;color:var(--text2)}
.contact-list svg{width:20px;height:20px;color:var(--blue);flex:none;margin-top:4px}
.contact-list a{color:var(--blue)}

/* 证书 / 来访横向滚动 */
.cert-strip{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;
  scrollbar-width:thin;-webkit-overflow-scrolling:touch}
.cert-strip>div{flex:0 0 260px;scroll-snap-align:start;border-radius:10px;overflow:hidden;background:#fff;
  box-shadow:var(--shadow)}
.cert-strip img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* 底部行动条 */
.ctaband{text-align:center}
.ctaband-in{display:flex;flex-direction:column;align-items:center;gap:26px}
.ctaband h2{max-width:900px;color:#fff;font-size:clamp(20px,2.4vw,30px);font-weight:700;margin:0}

/* 产品详情补充 */
.pd-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.note{font-size:13px;color:var(--muted);margin-top:12px}
.empty{padding:30px;background:#fff;border:1px dashed var(--line);border-radius:10px;color:var(--muted);text-align:center}

/* 面包屑容器 */
.crumb-sec{background:var(--bg2)}
.crumb{padding:14px 0}
.crumb .wrap{padding:0 20px}

/* 抽屉里的子项 */
.drawer .sub{font-size:13.5px;padding-left:18px;color:var(--text2);font-weight:400}

/* 导航下拉：无 JS 也可 hover 展开 */
.nav ul>li.has-drop:hover .drop,.nav ul>li.has-drop:focus-within .drop{display:grid}
.has-drop>a::after{content:" ▾";font-size:11px}

@media (max-width:700px){
  .ctaband h2{font-size:20px}
  .cert-strip>div{flex:0 0 200px}
  .video-hero{min-height:480px}
  .video-hero .txt{padding:56px 0 72px}
}

/* ---------- 视频头图 ---------- */
.video-hero{position:relative;min-height:min(660px,86vh);display:flex;align-items:center;
  background:var(--navy-dd);color:#fff;overflow:hidden}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.video-hero .mask{position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg,rgba(9,26,48,.92) 0%,rgba(9,26,48,.62) 55%,rgba(9,26,48,.28) 100%)}
.video-hero .wrap{position:relative;z-index:3;width:100%}
.video-hero .txt{position:relative;max-width:720px;padding:96px 0 130px;pointer-events:none}
.video-hero .txt a,.video-hero .txt button{pointer-events:auto}

/* ---------- 通用图片轮播（证书 / 来访） ---------- */
.caro{position:relative;background:transparent;overflow:hidden;border-radius:12px;min-height:auto}
.caro .sw{position:relative}
.caro .slide{position:absolute;inset:0;opacity:0;transition:opacity .8s ease;pointer-events:none}
.caro .slide.on{opacity:1;position:relative;pointer-events:auto}
.caro .slide img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px}
.caro .caro-arrow{background:rgba(255,255,255,.92);border:1px solid var(--line);color:var(--navy)}
.caro .caro-arrow:hover{background:#fff}
.caro .caro-dots{bottom:14px}
.caro .caro-dots button{border-color:#fff;background:rgba(255,255,255,.35)}
.caro .caro-dots button.on{background:var(--gold);border-color:var(--gold)}

/* ---------- CTA 行 ---------- */
.cta-row{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-top:34px}
.cta-row .caro-arrow{position:static;transform:none;background:var(--navy);border-color:var(--navy);color:#fff}
.cta-row .caro-arrow:hover{background:var(--blue);border-color:var(--blue)}
.btn.dark{background:var(--navy);border-color:var(--navy);color:#fff}
.btn.dark:hover{background:var(--blue);border-color:var(--blue)}

/* ---------- 打勾列表 ---------- */
.tick{margin:18px 0 26px}
.tick li{display:flex;gap:11px;align-items:flex-start;padding:6px 0;color:var(--text2);font-size:15px}
.tick svg{width:20px;height:20px;color:var(--green);flex:none;margin-top:5px;stroke-width:2.6}

/* ---------- 搜索框 ---------- */
.searchbar{max-width:520px;margin-bottom:26px}
.searchbar input{width:100%;padding:13px 16px;border:1px solid var(--line);border-radius:8px;font:inherit;font-size:15px}
.searchbar input:focus{border-color:var(--blue);outline:none}

/* ---------- 左对齐标题 ---------- */
.sec-head-left{margin-bottom:34px;max-width:820px}
.sec-head-left h1,.sec-head-left h2{font-size:clamp(24px,3vw,36px);position:relative;padding-bottom:14px}
.sec-head-left h1::after,.sec-head-left h2::after{content:"";position:absolute;left:0;bottom:0;width:64px;height:4px;
  background:var(--blue);border-radius:3px}
.sec-head-left p{color:var(--text2);margin-top:14px}

/* ---------- 文章页 ---------- */
.art{max-width:820px}
.art-body{font-size:16px;line-height:1.85;color:var(--text2)}
.art .meta{font-size:13px;color:var(--muted)}
.art .std{margin-bottom:12px}

/* ---------- 联系页 ---------- */
.contact-list{margin:20px 0}
.contact-list li{display:flex;gap:11px;align-items:flex-start;padding:8px 0;color:var(--text2)}
.contact-list svg{width:19px;height:19px;color:var(--blue);flex:none;margin-top:5px}
.contact-list a{color:var(--blue)}

/* ---------- 横向滚动证书条 ---------- */
.cert-strip{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;
  scrollbar-width:thin;-webkit-overflow-scrolling:touch}
.cert-strip>div{flex:0 0 250px;scroll-snap-align:start;border-radius:10px;overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.cert-strip img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* ---------- 底部行动条 ---------- */
.ctaband{text-align:center}
.ctaband-in{display:flex;flex-direction:column;align-items:center;gap:26px}
.ctaband h2{max-width:900px;font-size:clamp(20px,2.4vw,30px);font-weight:700;color:#fff}

/* ---------- 产品详情 ---------- */
.pd-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.note{font-size:13px;color:var(--muted);margin-top:14px}
.empty{padding:34px;text-align:center;color:var(--muted);background:#fff;border:1px dashed var(--line);border-radius:10px}

/* ---------- 面包屑外层 ---------- */
.crumb-sec{padding:0}
.crumb{padding:0}

/* ---------- 抽屉子项 ---------- */
.drawer .sub{padding-left:18px;font-size:14px;font-weight:400;color:var(--text2)}

/* ---------- 下拉箭头 ---------- */
.nav ul>li.has-drop>a::after{content:"";display:inline-block;width:6px;height:6px;margin-left:6px;
  border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px)}

/* ---------- 页脚工厂名（后台填写，空则隐藏） ---------- */
.fname{font-weight:700;font-size:17px;color:#fff;margin:12px 0 4px;letter-spacing:.2px}
.fname:empty{display:none;margin:0}

/* ---------- 头部吸附（sticky 必须挂在外层，父容器是 body 才有效） ---------- */
.hdr{position:sticky;top:0;z-index:80;background:#fff}
.hdr.compact .topbar{display:none}
@media (prefers-reduced-motion: reduce){ .reveal{opacity:1 !important;transform:none !important} }