/* zethworld.shop — 单文件样式
   皮肤：米白 + 墨绿 + 金（沿用集团品牌色）
   版式：A editorial 首页 / C 目录型产品页
*/
:root{
  --g:#0A2418; --g2:#123626; --g3:#1B4A33;
  --gold:#C9A45C; --gold-d:#A9863F;
  --ivory:#F5F1E8; --ivory2:#EFEADE; --white:#FCFAF4;
  --ink:#16241C; --mut:#5E6E64; --line:#DCD5C4; --line2:#E7E1D2;
  --serif:'Iowan Old Style','Palatino Linotype',Palatino,Georgia,'Songti SC',serif;
  --sans:-apple-system,BlinkMacSystemFont,'Helvetica Neue',Helvetica,'PingFang SC','Microsoft YaHei',Arial,sans-serif;
  --v:20261114b;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{background:var(--ivory);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
.wrap{max-width:1320px;margin:0 auto;padding:0 48px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:var(--g);color:#fff;padding:8px 14px;z-index:99}

/* ---------- top bar ---------- */
.topbar{background:var(--g);color:#CFE0D6;font-size:11.5px;letter-spacing:.1em;text-transform:uppercase}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px;gap:20px}
.topbar .tb-right{color:var(--gold);white-space:nowrap}

/* ---------- header ---------- */
.site-head{position:sticky;top:0;z-index:40;background:rgba(245,241,232,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;height:78px;gap:34px}
.brand{font-family:var(--serif);font-size:25px;letter-spacing:.16em;color:var(--g);white-space:nowrap}
.brand em{font-style:normal;color:var(--gold-d)}
.nav-desk{display:flex;gap:26px;margin-left:auto;font-size:13.5px;color:#3C4A42}
.nav-desk a{padding:8px 0;border-bottom:1px solid transparent;white-space:nowrap}
.nav-desk a:hover,.nav-desk a.on{border-color:var(--gold);color:var(--g)}
.head-act{display:flex;align-items:center;gap:14px}
.lang-sw{font-size:12px;letter-spacing:.08em;border:1px solid var(--line);padding:6px 11px;color:#3C4A42;border-radius:2px}
.lang-sw:hover{border-color:var(--gold);color:var(--g)}
.rfq-btn{background:none;border:1px solid var(--g);color:var(--g);font-size:12px;letter-spacing:.06em;padding:8px 12px;border-radius:2px;cursor:pointer;display:flex;align-items:center;gap:7px}
.rfq-btn:hover{background:var(--g);color:var(--ivory)}
.rfq-count{background:var(--gold);color:#22190A;font-size:10.5px;min-width:17px;height:17px;line-height:17px;text-align:center;border-radius:9px;padding:0 4px}
.btn-solid{display:inline-block;background:var(--g);color:var(--ivory);font-size:13.5px;letter-spacing:.04em;padding:14px 26px;border-radius:2px;border:0;cursor:pointer}
.btn-solid:hover{background:var(--g3)}
.btn-solid.sm{padding:10px 18px;font-size:12.5px}
.btn-line{display:inline-block;border-bottom:1px solid var(--g);padding-bottom:3px;font-size:13.5px;color:var(--g)}
.btn-line:hover{border-color:var(--gold);color:var(--gold-d)}
.burger{display:none;background:none;border:0;padding:8px;cursor:pointer}
.burger span{display:block;width:20px;height:1.5px;background:var(--g);margin:4px 0}

/* mobile menu */
.mobmenu{display:none;position:fixed;inset:0;top:0;background:var(--ivory);z-index:60;padding:90px 28px 28px;overflow:auto}
.mobmenu.open{display:block}
.mobmenu-in{display:grid;gap:2px}
.mobmenu-in a{font-family:var(--serif);font-size:24px;color:var(--g);padding:12px 0;border-bottom:1px solid var(--line)}
.mobmenu-lang{margin-top:26px;display:flex;gap:12px}
.mobmenu-lang a{border:1px solid var(--g);border-radius:2px;padding:10px 16px;font-size:13px;font-family:var(--sans)}

/* ---------- hero ---------- */
.hero{padding:74px 0 0}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:64px;align-items:end}
.eyebrow{font-size:11.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-d);font-weight:600;margin-bottom:24px;display:flex;align-items:center;gap:13px}
.eyebrow:before{content:"";width:36px;height:1px;background:var(--gold)}
h1{font-family:var(--serif);font-size:60px;line-height:1.07;letter-spacing:-.015em;color:var(--g);font-weight:400}
h1 i{font-style:italic;color:var(--g3)}
.lede{font-size:16.5px;line-height:1.72;color:#4A5A50;margin-top:24px;max-width:530px}
.hero-acts{display:flex;align-items:center;gap:26px;margin-top:34px;flex-wrap:wrap}
.std{margin-top:40px;font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--mut)}
.ph{position:relative;background:linear-gradient(150deg,#E6E0D0,#D3CBB6);overflow:hidden}
.ph:after{content:attr(data-label);position:absolute;left:16px;bottom:14px;right:16px;font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:#8C8574}
.hero-pic{height:520px;border-radius:2px;background:linear-gradient(150deg,#2A4F3A55,#0A2418DD),repeating-linear-gradient(96deg,#1B4A33 0 26px,#204B34 26px 52px)}
.hero-pic:after{color:#BBD0C3}

/* ---------- stats ---------- */
.stats{margin-top:64px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:32px 0;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat .n{font-family:var(--serif);font-size:38px;color:var(--g);line-height:1}
.stat .l{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut);margin-top:11px}

/* ---------- section ---------- */
.sec{padding:82px 0}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;padding-bottom:24px;border-bottom:1px solid var(--g);margin-bottom:40px}
.sec-head h2{font-family:var(--serif);font-size:37px;font-weight:400;color:var(--g);letter-spacing:-.01em}
.sec-head p{font-size:14px;color:var(--mut);margin-top:10px;max-width:640px;line-height:1.7}
.link-arrow{font-size:12.5px;letter-spacing:.08em;color:var(--g);white-space:nowrap;border-bottom:1px solid var(--gold);padding-bottom:3px}

/* ---------- products grid ---------- */
.prods{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line)}
.prod{background:var(--ivory);display:block;padding-bottom:24px;transition:background .18s}
.prod:hover{background:#FBF8F1}
.prod-ph{height:210px;margin-bottom:20px}
.prod:nth-child(2) .prod-ph{background:linear-gradient(160deg,#DFE4D9,#C9D2BF)}
.prod:nth-child(3) .prod-ph{background:linear-gradient(160deg,#E9E2CF,#D9CDAE)}
.prod:nth-child(4) .prod-ph{background:linear-gradient(160deg,#E0DED6,#C8C5B8)}
.prod:nth-child(5) .prod-ph{background:linear-gradient(160deg,#DDE3DD,#C4CEC6)}
.prod:nth-child(6) .prod-ph{background:linear-gradient(160deg,#E8E4D8,#D2CBBA)}
.prod-body{padding:0 22px}
.prod-idx{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--gold-d)}
.prod h3{font-family:var(--serif);font-size:21px;font-weight:400;color:var(--g);margin-top:8px;line-height:1.25}
.prod p{font-size:13px;line-height:1.62;color:#55645A;margin-top:10px}
.prod-more{display:inline-block;margin-top:14px;font-size:12px;letter-spacing:.06em;color:var(--g);border-bottom:1px solid var(--gold)}

/* ---------- cert band ---------- */
.certband{background:var(--ivory2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.certband .wrap{display:grid;grid-template-columns:280px 1fr;gap:40px;align-items:center;padding-top:32px;padding-bottom:32px}
.cb-lead strong{display:block;font-family:var(--serif);font-size:17px;color:var(--g);line-height:1.35}
.cb-lead span{display:block;font-size:12.5px;color:var(--mut);margin-top:6px}
.cb-list{display:grid;grid-template-columns:repeat(5,1fr)}
.cb{text-align:center;border-left:1px solid var(--line)}
.cb .c{font-family:var(--serif);font-size:18px;color:var(--g)}
.cb .s{font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:#7C8A80;margin-top:5px}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:stretch}
.split-txt h2{font-family:var(--serif);font-size:36px;font-weight:400;color:var(--g);line-height:1.2}
.split-txt>p{font-size:15px;line-height:1.75;color:#4A5A50;margin-top:20px}
.list3{margin-top:28px;display:grid;gap:16px}
.list3 div{display:flex;gap:15px;font-size:13.5px;line-height:1.65;color:#3C4A42}
.list3 b{font-family:var(--serif);color:var(--gold-d);font-size:15px;font-weight:400;min-width:22px}
.mt36{margin-top:32px}
.split-pic{min-height:460px;background:linear-gradient(200deg,#1B4A33,#0A2418)}
.split-pic:after{color:#9FB7A8}

/* ---------- rfq section + form ---------- */
.rfq-sec{background:var(--g);color:var(--ivory);padding:76px 0}
.rfq-sec .wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:76px}
.rfq-sec.slim{padding:64px 0}
.rfq-txt h2{font-family:var(--serif);font-size:38px;font-weight:400;line-height:1.16}
.rfq-txt>p{font-size:14.5px;line-height:1.8;color:#A9C0B2;margin-top:18px}
.who{margin-top:30px;font-size:12px;letter-spacing:.06em;color:#8FA79A;line-height:1.9}
.who span{display:block;text-transform:uppercase;letter-spacing:.14em;font-size:10.5px;color:var(--gold);margin-bottom:6px}
.inq-form{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:#2A4636;align-content:start}
.inq-form .f{background:var(--g2);padding:14px 16px}
.inq-form .f label{display:block;font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:#8FA79A;margin-bottom:6px}
.inq-form .f input,.inq-form .f textarea{width:100%;background:transparent;border:0;color:var(--ivory);font-size:14px;font-family:var(--sans);outline:none;resize:none}
.inq-form .f.full{grid-column:1/-1}
.inq-form button{grid-column:1/-1;background:var(--gold);color:#12251B;border:0;padding:16px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:600;cursor:pointer}
.inq-form button:hover{background:#D8B672}
.inq-form .tiny{grid-column:1/-1;background:var(--g);color:#7E9587;font-size:11px;line-height:1.6;padding:10px 2px 0}
.form-ok{grid-column:1/-1;background:var(--g);color:#CFE3D4;font-size:13px;padding:10px 2px 0}
.tiny{font-size:11.5px;color:var(--mut);line-height:1.6}
.spec-note{margin-top:24px}

/* ---------- footer ---------- */
.site-foot{background:#071A11;color:#93A99B;padding:60px 0 26px;font-size:13px}
.fgrid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:48px;padding-bottom:40px;border-bottom:1px solid #1C3A2A}
.fgrid h4{font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);margin-bottom:14px}
.fgrid a{display:block;padding:5px 0;color:#93A99B}
.fgrid a:hover{color:var(--ivory)}
.fbrand{font-family:var(--serif);font-size:22px;letter-spacing:.14em;color:var(--ivory)}
.fbrand em{font-style:normal;color:var(--gold)}
.fgrid p{margin-top:12px;line-height:1.8;max-width:320px;font-size:12.5px}
.faddr{display:block;padding:5px 0;color:#6F8878}
.fbot{display:flex;justify-content:space-between;gap:20px;padding-top:20px;font-size:11.5px;color:#5E7568}

/* ---------- RFQ drawer ---------- */
.rfq-mask{position:fixed;inset:0;background:rgba(7,26,17,.5);opacity:0;pointer-events:none;transition:.2s;z-index:80}
.rfq-mask.on{opacity:1;pointer-events:auto}
.rfq-drawer{position:fixed;top:0;right:0;bottom:0;width:420px;max-width:92vw;background:var(--ivory);z-index:90;display:flex;flex-direction:column;transform:translateX(100%);transition:transform .26s ease}
.rfq-drawer.on{transform:none}
.rfq-head{display:flex;justify-content:space-between;align-items:center;padding:22px 24px;border-bottom:1px solid var(--line)}
.rfq-head h3{font-family:var(--serif);font-size:21px;font-weight:400;color:var(--g)}
.rfq-close{background:none;border:0;font-size:26px;line-height:1;color:var(--mut);cursor:pointer}
.rfq-body{flex:1;overflow:auto;padding:8px 24px}
.rfq-item{display:grid;grid-template-columns:1fr 92px;gap:10px;padding:16px 0;border-bottom:1px solid var(--line2)}
.rfq-item .n{font-size:13.5px;color:var(--g);line-height:1.4}
.rfq-item .c{font-size:11px;letter-spacing:.08em;color:var(--gold-d);margin-top:4px}
.rfq-item input{width:100%;border:1px solid var(--line);background:#fff;padding:7px 9px;font-size:12.5px;font-family:var(--sans);border-radius:2px}
.rfq-item button{background:none;border:0;color:#9A8B72;font-size:11.5px;cursor:pointer;text-align:left;padding:0;margin-top:6px}
.rfq-empty{font-size:13px;color:var(--mut);line-height:1.8;padding:26px 0}
.rfq-foot{padding:18px 24px 24px;border-top:1px solid var(--line);display:grid;gap:10px}
.rfq-sum{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--mut)}
.rfq-sum span{color:var(--g);font-weight:600}
.rfq-foot .btn-solid{text-align:center}
.rfq-clear{background:none;border:0;color:var(--mut);font-size:11.5px;text-decoration:underline;cursor:pointer}

/* ---------- products page ---------- */
.pl-hero{background:var(--ivory2);border-bottom:1px solid var(--line);padding:52px 0}
.pl-hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.pl-hero h1{font-size:38px;line-height:1.18;font-family:var(--sans);font-weight:700;color:var(--g);letter-spacing:-.01em}
.pl-hero .lede{font-size:14.5px;margin-top:14px;max-width:560px}
.pills{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}
.pill{background:var(--white);border:1px solid var(--line);font-size:11.5px;padding:6px 11px;color:#40524A}
.pill b{color:var(--g)}
.terms-box{background:var(--white);border:1px solid var(--line);padding:20px 22px}
.terms-box h4{font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--mut);margin-bottom:12px}
.terms-box .row{display:flex;justify-content:space-between;gap:16px;padding:8px 0;border-bottom:1px dashed var(--line2);font-size:12.5px}
.terms-box .row:last-child{border:0}
.terms-box .row b{color:var(--g);text-align:right}

.pl-body{display:grid;grid-template-columns:232px 1fr;gap:40px;padding:34px 0 70px}
.filters h5{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut);margin-bottom:14px}
.filt{padding:13px 0;border-bottom:1px solid var(--line)}
.filt.last{border-bottom:0}
.filt .t{font-size:12.5px;color:var(--g);font-weight:600;margin-bottom:6px}
.filt label{display:flex;gap:8px;align-items:center;font-size:12.5px;color:#4F6057;padding:4px 0;cursor:pointer}
.filt input{accent-color:var(--g);width:14px;height:14px}
.filt-reset{margin-top:12px;background:none;border:1px solid var(--line);color:var(--mut);font-size:11.5px;padding:7px 12px;cursor:pointer;border-radius:2px}
.pl-toolbar{display:flex;justify-content:space-between;align-items:center;gap:18px;padding-bottom:14px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.pl-toolbar .cnt{font-size:12.5px;color:var(--mut)}
.pl-toolbar .cnt b{color:var(--g)}
.pl-cats{display:flex;gap:14px;font-size:11.5px;color:#4F6057;flex-wrap:wrap}
.pl-cats a{border-bottom:1px solid transparent;padding-bottom:2px}
.pl-cats a:hover{border-color:var(--gold);color:var(--g)}
.cat-sec{margin-top:34px}
.cat-head{display:flex;justify-content:space-between;align-items:baseline;border-bottom:2px solid var(--g);padding-bottom:10px}
.cat-head h3{font-family:var(--serif);font-size:22px;font-weight:400;color:var(--g)}
.cat-head span{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--mut)}
.cat-intro{font-size:13px;color:var(--mut);line-height:1.7;margin:12px 0 4px;max-width:760px}
.prow{display:grid;grid-template-columns:92px 1fr 158px 168px 132px;gap:18px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line2)}
.prow:hover{background:#FBF8F1}
.prow.hide{display:none}
.pthumb{height:72px;display:block}
.pinfo h4{font-size:14.5px;color:var(--g);font-weight:600;line-height:1.35}
.pinfo h4 a:hover{color:var(--gold-d)}
.psub{font-size:11px;letter-spacing:.06em;color:var(--gold-d);margin-top:3px}
.chips{display:flex;gap:5px;flex-wrap:wrap;margin-top:7px}
.chip{font-size:10px;background:var(--ivory2);border:1px solid var(--line);color:#4A5B52;padding:2px 6px;letter-spacing:.02em}
.pspec{font-size:11.5px;line-height:1.65;color:#4F6057}
.pspec b{display:block;color:var(--g);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:4px}
.pspec span{display:block}
.pact{text-align:right}
.pmoq{font-size:11.5px;color:var(--mut);margin-bottom:7px}
.add{border:1px solid var(--g);background:transparent;color:var(--g);font-size:11.5px;padding:8px 11px;cursor:pointer;border-radius:2px;white-space:nowrap}
.add:hover{background:var(--g);color:var(--ivory)}
.add.sel{background:var(--g);color:var(--ivory)}
.pl-none{padding:40px 0;color:var(--mut);font-size:13.5px}

/* ---------- breadcrumbs / pdp ---------- */
.crumbs{padding-top:22px;font-size:11.5px;color:var(--mut);display:flex;gap:8px;flex-wrap:wrap}
.crumbs a:hover{color:var(--g)}
.crumbs span{color:var(--line)}
.crumbs em{font-style:normal;color:var(--g)}
.pdp{padding:30px 0 40px}
.pdp-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:64px;align-items:start}
.pdp-img{height:520px}
.pdp-note{font-size:11px;color:var(--mut);margin-top:10px;letter-spacing:.04em}
.pdp-info h1{font-size:40px;line-height:1.14}
.pdp-desc{font-size:15px;line-height:1.75;color:#4A5A50;margin-top:18px}
.pdp-meta{margin-top:26px;border-top:1px solid var(--line)}
.pdp-meta div{display:flex;justify-content:space-between;gap:20px;padding:11px 0;border-bottom:1px solid var(--line2);font-size:13px}
.pdp-meta span{color:var(--mut);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase}
.pdp-meta b{color:var(--g);font-weight:600;text-align:right}
.pdp-acts{display:flex;gap:20px;align-items:center;margin-top:26px;flex-wrap:wrap}
.pdp-tables{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-top:36px}
.tbl h3{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut);margin-bottom:10px}
.tbl table{width:100%;border-collapse:collapse;font-size:12.5px}
.tbl th{text-align:left;font-weight:400;color:var(--mut);padding:8px 0;border-bottom:1px solid var(--line2);width:44%}
.tbl td{text-align:right;color:var(--g);padding:8px 0;border-bottom:1px solid var(--line2)}
.related .rel-grid{grid-template-columns:repeat(3,1fr)}
.prod.rel .prod-ph{height:180px}

/* ---------- content pages ---------- */
.page-hero{padding:64px 0 18px}
.page-hero h1{font-size:46px;line-height:1.12}
.page-hero .lede{max-width:660px}
.page-sec{padding-top:34px}
.items{display:grid;gap:1px;background:var(--line);border-top:1px solid var(--line)}
.item{background:var(--ivory);display:grid;grid-template-columns:64px 1fr;gap:26px;padding:28px 0}
.item-idx{font-family:var(--serif);font-size:15px;color:var(--gold-d);padding-top:4px}
.item h3{font-family:var(--serif);font-size:23px;font-weight:400;color:var(--g)}
.item p{font-size:14px;line-height:1.75;color:#4A5A50;margin-top:10px;max-width:860px}
.item-p{margin-top:12px;font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--gold-d)}
.items-oem .item{grid-template-columns:64px 1fr auto}

/* ---------- contact ---------- */
.contact-sec{padding-top:30px}
.contact-grid{display:grid;grid-template-columns:1.05fr .85fr;gap:60px;align-items:start}
.contact-form .inq-form{background:var(--g);padding:1px}
.contact-side{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.cs-block{background:var(--ivory);padding:22px 24px}
.cs-block h4{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut);margin-bottom:10px}
.cs-block a{display:block;font-size:14px;color:var(--g);padding:3px 0}
.cs-block a:hover{color:var(--gold-d)}
.cs-block p,.cs-block li{font-size:13px;line-height:1.7;color:#4A5A50}
.cs-block ol{padding-left:18px;display:grid;gap:6px;margin-top:4px}
.cs-block.hl{background:var(--ivory2)}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .wrap{padding:0 32px}
  .nav-desk{gap:18px;font-size:13px}
  h1{font-size:52px}
  .pdp-grid{gap:40px}
}
@media (max-width:1000px){
  .prow{grid-template-columns:80px 1fr 140px 120px}
  .prow .pspec:nth-of-type(2){display:none}
  .pdp-tables{grid-template-columns:1fr}
}
@media (max-width:960px){
  .wrap{padding:0 20px}
  .topbar{display:none}
  .nav-desk,.head-act .lang-sw,.head-act .btn-solid.sm{display:none}
  .head-in{height:64px;gap:18px}
  .brand{font-size:21px}
  .burger{display:block}
  .hero{padding:40px 0 0}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  h1{font-size:38px}
  .lede{font-size:15px}
  .hero-pic{height:300px}
  .stats .wrap{grid-template-columns:1fr 1fr}
  .stat{padding:22px 0;border-bottom:1px solid var(--line)}
  .stat:nth-child(2n){border-right:0}
  .stat .n{font-size:30px}
  .sec{padding:48px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;padding-bottom:18px;margin-bottom:26px}
  .sec-head h2{font-size:28px}
  .prods{grid-template-columns:1fr 1fr}
  .prod-ph{height:150px}
  .prod h3{font-size:18px}
  .certband .wrap{grid-template-columns:1fr;gap:22px}
  .cb-list{grid-template-columns:repeat(2,1fr);gap:14px 0}
  .cb{border-left:0;text-align:left}
  .split,.rfq-sec .wrap,.contact-grid,.pl-hero .wrap,.pdp-grid{grid-template-columns:1fr;gap:34px}
  .split-pic{min-height:280px}
  .rfq-sec{padding:48px 0}
  .rfq-txt h2{font-size:28px}
  .pl-hero{padding:32px 0}
  .pl-hero h1{font-size:26px}
  .pl-body{grid-template-columns:1fr;gap:22px}
  .filters{display:none}
  .pl-cats{display:none}
  .prow{grid-template-columns:70px 1fr;gap:12px;padding:14px 0}
  .prow .pspec{display:none}
  .pact{grid-column:1/-1;text-align:left;display:flex;align-items:center;gap:14px}
  .pmoq{margin:0}
  .pdp-img{height:320px}
  .pdp-info h1,.page-hero h1{font-size:29px}
  .items-oem .item{grid-template-columns:40px 1fr}
  .item{grid-template-columns:40px 1fr;gap:14px}
  .fgrid{grid-template-columns:1fr 1fr;gap:30px}
  .fbot{flex-direction:column;gap:8px}
  .related .rel-grid{grid-template-columns:1fr 1fr}
  .inq-form{grid-template-columns:1fr}
  .page-hero{padding:36px 0 12px}
}
@media (max-width:520px){
  .prods{grid-template-columns:1fr}
  .prod-ph{height:200px}
  .related .rel-grid{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* ---------- 中文版字体栈 ---------- */
html[lang="zh-CN"] body{font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC',sans-serif}
html[lang="zh-CN"] h1,html[lang="zh-CN"] h2,html[lang="zh-CN"] .brand,
html[lang="zh-CN"] .fbrand,html[lang="zh-CN"] .prod h3,html[lang="zh-CN"] .item h3,
html[lang="zh-CN"] .cat-head h3,html[lang="zh-CN"] .stat .n,html[lang="zh-CN"] .rfq-txt h2{
  font-family:'Songti SC','Noto Serif SC','Source Han Serif SC',STSong,SimSun,serif;
}
html[lang="zh-CN"] .pl-hero h1{font-family:-apple-system,'PingFang SC','Microsoft YaHei',sans-serif}

/* 详情页合规说明小字 */
.cert-note{margin:-6px 0 14px;color:#6b6b63;line-height:1.65;text-align:justify;text-justify:inter-ideograph}
html[lang=en] .cert-note{text-justify:inter-word;-webkit-hyphens:auto;hyphens:auto}