:root{
  --ink:#3e2c22; --ink2:#8a6b55; --line:#e4d5c0;
  --pri:#5c3d26; --pri2:#8a5a35; --brass:#a8762e; --brass2:#d9b98a;
  --leather:#6b4529; --leather2:#b98a5b;
  --bg:#fbf3e8; --soft:#f6eee2; --card:#ffffff; --radius:14px;
  --shadow:0 6px 24px rgba(92,61,38,.08); --shadow2:0 14px 44px rgba(92,61,38,.16);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.65 "Inter",-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:min(1180px,92%);margin:0 auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* top bar */
.topbar{background:var(--pri);color:#e9d9c3;font-size:12.5px}
.topbar-in{display:flex;align-items:center;justify-content:space-between;gap:18px;height:38px}
.tb-lang{display:flex;align-items:center;gap:7px;color:#e9d9c3}
.tb-lang i{display:inline-block;width:1px;height:12px;background:rgba(233,217,195,.4)}
.tb-ann{flex:1;text-align:center;letter-spacing:.3px;color:#e9d9c3;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.tb-social{display:flex;gap:13px;align-items:center}
.tb-social a{color:#e9d9c3;opacity:.85;transition:.18s}
.tb-social a:hover{color:#fff;opacity:1}
.tb-social svg{width:15px;height:15px;display:block}

/* header */
.hd{position:sticky;top:0;z-index:60;background:rgba(251,243,232,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hd-in{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px}
.brand{display:flex;align-items:center;flex-shrink:0}
.brand img{height:40px;width:auto}
.nav{display:flex;gap:2px;flex-wrap:wrap}
.nav a{padding:9px 12px;border-radius:9px;font-size:13.5px;font-weight:600;letter-spacing:.4px;color:var(--ink2);transition:.18s;white-space:nowrap}
.nav a:hover{background:var(--soft);color:var(--pri)}
.nav a.on{color:var(--pri);background:var(--soft);box-shadow:inset 0 -2px 0 var(--brass)}
.nav a[aria-disabled="true"]{color:#c5b39e;cursor:not-allowed}
.nav a[aria-disabled="true"]:hover{background:transparent;color:#c5b39e}
.search{background:none;border:0;cursor:pointer;padding:8px;color:var(--ink2);display:flex;align-items:center;transition:.18s}
.search:hover{color:var(--pri)}
.search svg{width:20px;height:20px}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px;gap:4px;flex-direction:column}
.burger span{display:block;width:22px;height:2px;background:var(--pri);border-radius:2px}

/* hero (carousel) */
.hero{position:relative;background:var(--pri);color:#fff;overflow:hidden}
/* 滑动区固定比例：三张图共用同一个盒子，切换时高度不跳动 */
.slides{position:relative;width:100%;aspect-ratio:613/320;min-height:430px;max-height:620px}
.slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .6s ease;display:none}
.slide.on{display:block;opacity:1;visibility:visible}
.slide img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;opacity:.28}
.slide::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(100deg,rgba(92,61,38,.82) 0%,rgba(92,61,38,.35) 55%,rgba(107,69,41,.18) 100%)}
.hero-in{position:relative;z-index:2;padding:104px 0 112px;max-width:660px}
/* 首页 hero 内的文字：与全站 .wrap 左对齐，并在固定盒子里垂直居中 */
.slide .hero-in{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;
  align-items:flex-start;justify-content:center;
  max-width:none;padding:0 max(4%,calc((100% - 1180px)/2))}
.slide .hero-in>*{max-width:660px}
.eyebrow{display:inline-block;font-size:11.5px;letter-spacing:2.6px;text-transform:uppercase;
  background:rgba(255,255,255,.12);border:1px solid var(--brass2);padding:7px 15px;border-radius:99px;margin-bottom:22px;color:#f3e6d3}
.hero h1{margin:0 0 18px;font-size:clamp(30px,5vw,52px);line-height:1.14;font-weight:800;letter-spacing:-.5px}
.hero p{margin:0 0 30px;font-size:17.5px;color:rgba(255,255,255,.9);max-width:600px}
.btns{display:flex;gap:13px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 27px;border-radius:10px;font-weight:700;font-size:15px;transition:.2s;border:1.5px solid transparent;cursor:pointer}
.btn-a{background:var(--brass);color:#2b1d0d;box-shadow:inset 0 0 0 1px rgba(255,255,255,.18)}
.btn-a:hover{background:var(--brass2);transform:translateY(-2px);box-shadow:0 10px 26px rgba(168,118,46,.4)}
.btn-o{border-color:rgba(255,255,255,.55);color:#fff}
.btn-o:hover{background:rgba(255,255,255,.13);border-color:#fff;transform:translateY(-2px)}
.btn-p{background:var(--pri);color:#fff}
.btn-p:hover{background:var(--pri2);transform:translateY(-2px);box-shadow:var(--shadow2)}
.hc{position:absolute;top:50%;transform:translateY(-50%);z-index:5;background:rgba(251,243,232,.16);border:1px solid rgba(217,185,138,.5);
  color:#fff;width:46px;height:46px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s}
.hc:hover{background:var(--brass);border-color:var(--brass)}
.hc svg{width:22px;height:22px}
.hc.prev{left:20px}.hc.next{right:20px}
.hdots{position:absolute;bottom:24px;left:0;right:0;z-index:5;display:flex;gap:9px;justify-content:center}
/* 手机端：隐藏左右箭头（改用圆点 + 左右滑动），避免压住 hero 正文 */
@media(max-width:760px){
  .hc{display:none}
  .hdots{bottom:18px}
}
.hdots button{width:9px;height:9px;border-radius:50%;border:0;background:rgba(255,255,255,.38);cursor:pointer;padding:0;transition:.2s}
.hdots button.on{background:var(--brass);width:24px;border-radius:99px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{background:var(--card);padding:30px 18px;text-align:center}
.stat b{display:block;font-size:29px;color:var(--pri);font-weight:800;letter-spacing:-.5px}
.stat span{font-size:12.5px;color:var(--ink2);letter-spacing:.6px;text-transform:uppercase}
/* 长标签适配：Latin America / 三港口 */
.stat.is-wide b{font-size:23px;letter-spacing:-.2px}
.stat.is-ports span{font-size:11.5px;letter-spacing:.2px}

/* section */
.sec{padding:76px 0}
.sec.soft{background:var(--soft)}
.sec-h{text-align:center;max-width:660px;margin:0 auto 46px}
.sec-h span{color:var(--brass);font-size:12px;font-weight:700;letter-spacing:2.6px;text-transform:uppercase}
.sec-h h2{margin:11px 0 13px;font-size:clamp(25px,3.4vw,36px);color:var(--pri);font-weight:800;letter-spacing:-.4px}
.sec-h p{margin:0;color:var(--ink2);font-size:16px}

/* cat grid */
.cats{display:grid;grid-template-columns:repeat(auto-fill,minmax(212px,1fr));gap:20px}
.cat{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--card);
  border:1px solid var(--line);box-shadow:var(--shadow);transition:.24s;display:block;flex:0 0 240px}
.cat:hover{transform:translateY(-5px);box-shadow:var(--shadow2)}
.cat-img{aspect-ratio:4/3;overflow:hidden;background:var(--soft)}
.cat-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.cat:hover .cat-img img{transform:scale(1.07)}
.cat-t{padding:14px 16px 16px}
.cat-t b{display:block;font-size:14.5px;color:var(--pri);line-height:1.35}
.cat-t i{font-style:normal;font-size:12px;color:var(--ink2)}

/* horizontal scroll (single-row slider) */
.hscroll{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 2px 16px;
  -webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:var(--brass2) transparent}
.hscroll::-webkit-scrollbar{height:8px}
.hscroll::-webkit-scrollbar-thumb{background:var(--brass2);border-radius:99px}
.hscroll::-webkit-scrollbar-track{background:transparent}
.hscroll .card{flex:0 0 220px;scroll-snap-align:start}
.hscroll .cat{flex:0 0 240px;scroll-snap-align:start}

/* duo category entry (钝角长方形) */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.duo-card{position:relative;border-radius:16px;overflow:hidden;display:block;background:var(--card);
  border:1px solid var(--line);box-shadow:var(--shadow);transition:.26s;aspect-ratio:16/7}
.duo-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:.5s}
.duo-card::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(92,61,38,.72),rgba(92,61,38,.12))}
.duo-card:hover{transform:translateY(-5px);box-shadow:var(--shadow2)}
.duo-card:hover img{transform:scale(1.06)}
.duo-t{position:absolute;z-index:2;left:30px;bottom:26px;color:#fff}
.duo-t b{display:block;font-size:clamp(22px,2.8vw,30px);font-weight:800;letter-spacing:-.3px}
.duo-t i{font-style:normal;font-size:14px;color:rgba(255,255,255,.88)}
.duo-card.off{cursor:default}
.duo-card.off img{opacity:.35}
.duo-card.off::after{background:linear-gradient(90deg,rgba(92,61,38,.6),rgba(92,61,38,.2))}
.duo-card.off:hover{transform:none;box-shadow:var(--shadow)}
.duo-card.off .duo-t i{color:var(--brass2)}

/* badges (certification) */
.badges{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.badge{display:inline-flex;align-items:center;justify-content:center;min-width:86px;padding:15px 20px;
  border-radius:12px;background:var(--card);border:1px solid var(--leather2);box-shadow:inset 0 0 0 1px rgba(255,255,255,.6);
  font-size:16px;font-weight:700;letter-spacing:1.2px;color:var(--pri);position:relative}
.badge::after{content:"";position:absolute;inset:3px;border-radius:9px;border:1px solid var(--brass2);pointer-events:none}

/* certification split (left image + right text) */
.cert-wrap{max-width:1080px}
.cert-grid{display:grid;grid-template-columns:0.9fr 1.1fr;gap:52px;align-items:center}
.cert-img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow2);background:var(--soft)}
.cert-img svg{width:100%;height:auto;display:block}
.cert-txt h3{color:var(--pri);font-size:26px;margin:12px 0 16px;font-weight:800;letter-spacing:-.3px}
.cert-txt p{color:var(--ink2);margin:0 0 15px;font-size:15px}
.cert-txt .span{display:inline-block}

/* tri (personalised / OEM) */
.tri{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.tri-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;
  box-shadow:var(--shadow);transition:.24s;text-align:center}
.tri-card:hover{transform:translateY(-5px);box-shadow:var(--shadow2);border-color:var(--leather2)}
.tri-ic{width:60px;height:60px;border-radius:50%;background:var(--soft);margin:0 auto 18px;display:flex;align-items:center;justify-content:center;border:1px solid var(--brass2)}
.tri-ic svg{width:28px;height:28px;stroke:var(--brass)}
.tri-card h4{margin:0 0 10px;color:var(--pri);font-size:17px}
.tri-card p{margin:0;color:var(--ink2);font-size:14.3px;line-height:1.7}

/* product grid */
.filters{display:flex;flex-wrap:wrap;gap:9px;justify-content:center;margin-bottom:36px}
.fbtn{padding:9px 17px;border-radius:99px;border:1.5px solid var(--line);background:var(--card);
  font-size:13.5px;font-weight:600;color:var(--ink2);cursor:pointer;transition:.18s}
.fbtn:hover{border-color:var(--pri);color:var(--pri)}
.fbtn.on{background:var(--pri);border-color:var(--pri);color:#fff}
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(196px,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;
  box-shadow:var(--shadow);cursor:pointer;transition:.22s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow2);border-color:var(--brass2)}
.card-img{aspect-ratio:1/1;background:var(--soft);overflow:hidden;display:flex;align-items:center;justify-content:center;padding:10px}
.card-img img{width:100%;height:100%;object-fit:contain;transition:.4s}
.card:hover .card-img img{transform:scale(1.06)}
.card-b{padding:12px 14px 15px;border-top:1px solid var(--line)}
.card-b b{display:block;font-size:13.8px;color:var(--pri);line-height:1.4;min-height:2.6em}
.card-b i{font-style:normal;font-size:11.5px;color:var(--ink2);letter-spacing:.4px}
.count{text-align:center;color:var(--ink2);font-size:14px;margin:26px 0 0}

/* about / text blocks */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.split.top{align-items:start}
.prose p{color:var(--ink2);margin:0 0 15px}
.prose h3{color:var(--pri);font-size:22px;margin:0 0 16px}
.prose ul{color:var(--ink2);padding-left:20px;margin:0 0 15px}
.prose li{margin-bottom:7px}
.frame{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow2);background:var(--soft)}
.frame img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.diffs{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.diff{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.24s}
.diff:hover{transform:translateY(-5px);box-shadow:var(--shadow2)}
.diff img{aspect-ratio:16/10;object-fit:cover;width:100%}
.diff-b{padding:20px}
.diff-b h4{margin:0 0 9px;color:var(--pri);font-size:17px}
.diff-b p{margin:0;color:var(--ink2);font-size:14.3px}

/* contact */
.cinfo{display:grid;gap:16px}
.ci{display:flex;gap:15px;padding:19px;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}
.ci-ic{flex:0 0 44px;height:44px;border-radius:11px;background:var(--soft);display:flex;align-items:center;justify-content:center;border:1px solid var(--brass2)}
.ci-ic svg{width:20px;height:20px;stroke:var(--pri);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.ci h5{margin:0 0 5px;font-size:14.5px;color:var(--pri)}
.ci p,.ci a{margin:0;color:var(--ink2);font-size:14.3px;word-break:break-word}
.ci a:hover{color:var(--brass)}
form{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
label{display:block;font-size:13px;font-weight:700;color:var(--pri);margin:0 0 7px}
input,textarea,select{width:100%;padding:11px 13px;border:1.5px solid var(--line);border-radius:9px;
  font:inherit;font-size:14.5px;color:var(--ink);background:var(--card);margin-bottom:16px;transition:.16s}
input:focus,textarea:focus,select:focus{outline:0;border-color:var(--brass);box-shadow:0 0 0 3px rgba(168,118,46,.14)}
textarea{min-height:118px;resize:vertical}
.note{font-size:12.5px;color:var(--ink2);margin:0}
.hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden;opacity:0}
.fmsg{display:none;margin:12px 0 0;font-size:13.2px;font-weight:700;line-height:1.5}
.fmsg.ok{display:block;color:#0b6b4f}
.fmsg.err{display:block;color:#a8322a}
.fmsg a{text-decoration:underline}
form[aria-busy="true"] .btn-p{opacity:.6;pointer-events:none}

/* newsletter */
.newsletter{background:var(--pri);color:#fff;border-radius:var(--radius);padding:54px 44px;text-align:center;box-shadow:var(--shadow2)}
.newsletter h2{margin:0 0 12px;font-size:clamp(23px,3vw,31px);font-weight:800}
.newsletter p{margin:0 auto 28px;color:rgba(255,255,255,.86);max-width:560px}
.news-form{display:flex;gap:12px;max-width:520px;margin:0 auto;background:none;border:0;padding:0;box-shadow:none}
.news-form input{flex:1;margin:0;border:1.5px solid rgba(255,255,255,.3);background:rgba(255,255,255,.1);color:#fff;border-radius:10px}
.news-form input::placeholder{color:rgba(255,255,255,.6)}
.news-form input:focus{border-color:var(--brass2);box-shadow:none;background:rgba(255,255,255,.16)}
.news-note{margin:14px 0 0;font-size:13px;color:var(--brass2);min-height:1.2em}

/* cta */
.cta{background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;border-radius:var(--radius);
  padding:52px 44px;text-align:center;box-shadow:var(--shadow2)}
.cta h2{margin:0 0 12px;font-size:clamp(23px,3vw,31px);font-weight:800}
.cta p{margin:0 0 26px;color:rgba(255,255,255,.88)}
.cta-row{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap}
.news-form.inline{display:flex;align-items:center;gap:0;max-width:440px;background:rgba(255,255,255,.1);
  border:1.5px solid rgba(255,255,255,.3);border-radius:10px;padding:0;box-shadow:none;overflow:hidden}
.news-form.inline input{flex:1;margin:0;border:0;background:transparent;color:#fff;border-radius:0;min-width:180px}
.news-form.inline input::placeholder{color:rgba(255,255,255,.6)}
.news-form.inline input:focus{border:0;background:transparent;box-shadow:none}
.news-form.inline .btn-o{border:0;border-radius:0;white-space:nowrap}
.cta .news-note{margin:14px 0 0;font-size:13px;color:var(--brass2);min-height:1.2em}

/* breadcrumb / page head */
.ph{background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;padding:54px 0}
.ph h1{margin:0 0 8px;font-size:clamp(25px,3.6vw,38px);font-weight:800;letter-spacing:-.4px}
.ph p{margin:0;color:rgba(255,255,255,.84);font-size:15px}
.crumb{font-size:12.5px;color:rgba(255,255,255,.72);margin-bottom:12px;letter-spacing:.5px}
.crumb a:hover{color:#fff}

/* lightbox */
.lb{position:fixed;inset:0;background:rgba(46,32,22,.88);display:none;align-items:center;justify-content:center;
  z-index:200;padding:26px;backdrop-filter:blur(3px)}
.lb.on{display:flex}
.lb-box{background:var(--card);border-radius:16px;max-width:840px;width:100%;max-height:92vh;overflow:auto;
  display:grid;grid-template-columns:1.1fr .9fr;box-shadow:0 30px 80px rgba(0,0,0,.4)}
.lb-media{display:flex;flex-direction:column;background:var(--soft);min-width:0}
.lb-img{position:relative;flex:1;display:flex;align-items:center;justify-content:center;padding:26px;min-height:300px}
.lb-img img{max-height:50vh;width:auto;max-width:100%;object-fit:contain}
.lb-arrow{position:absolute;top:50%;transform:translateY(-50%);width:34px;height:34px;border-radius:50%;
  background:rgba(255,255,255,.92);border:1px solid var(--line);color:var(--pri);cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;padding:0 0 2px;transition:.18s}
.lb-arrow:hover{background:var(--brass);color:#fff;border-color:var(--brass)}
.lb-arrow[hidden],.lb-thumbs[hidden]{display:none}
.lb-arrow.prev{left:10px}
.lb-arrow.next{right:10px}
.lb-thumbs{display:flex;gap:8px;padding:0 26px 20px;overflow-x:auto;justify-content:center}
.lb-thumbs button{width:56px;height:56px;padding:0;border-radius:8px;overflow:hidden;background:#fff;
  border:1.5px solid var(--line);cursor:pointer;flex:0 0 auto;transition:.18s}
.lb-thumbs button img{width:100%;height:100%;object-fit:cover}
.lb-thumbs button.on{border-color:var(--brass);box-shadow:0 0 0 2px rgba(168,118,46,.18)}
.lb-info{padding:30px 28px;display:flex;flex-direction:column;justify-content:center}
.lb-info i{font-style:normal;font-size:11.5px;color:var(--brass);letter-spacing:2px;text-transform:uppercase;font-weight:700}
.lb-info h3{margin:10px 0 14px;color:var(--pri);font-size:22px;line-height:1.25}
.lb-spec{display:grid;grid-template-columns:auto 1fr;gap:7px 16px;margin:0 0 18px;font-size:13.3px}
.lb-spec dt{color:var(--brass);font-weight:700;letter-spacing:.5px;text-transform:uppercase;font-size:11px;padding-top:2px}
.lb-spec dd{margin:0;color:var(--ink);font-weight:600}
.lb-spec dd.is-empty{color:var(--ink2);font-weight:400}
.lb-info p.d{margin:0 0 22px;color:var(--ink2);font-size:14.3px}
.lb-info p.dl{margin:0 0 6px;color:var(--brass);font-weight:700;letter-spacing:.5px;text-transform:uppercase;font-size:11px}
.lb-close{position:absolute;top:20px;right:22px;background:rgba(255,255,255,.14);border:0;color:#fff;
  width:40px;height:40px;border-radius:50%;font-size:22px;cursor:pointer;transition:.18s}
.lb-close:hover{background:rgba(255,255,255,.28)}

/* footer */
.ft{background:var(--pri);color:rgba(255,255,255,.78);margin-top:0;padding:56px 0 0;border-top:4px solid var(--leather)}
.ft-in{display:grid;grid-template-columns:1.5fr 1fr 1.3fr 1.3fr;gap:38px;padding-bottom:40px}
.ft-logo{height:40px;width:auto;margin-bottom:16px}
.ft-col h4{margin:0 0 15px;color:var(--brass2);font-size:14px;letter-spacing:1.4px;text-transform:uppercase}
.ft-col p{font-size:13.8px;line-height:1.75;margin:0}
.ft-col a{display:block;font-size:14px;padding:5px 0;transition:.16s}
.ft-col a:hover{color:var(--brass2)}
.ft-addr{margin-top:12px!important;font-size:13.3px!important}
.ft-social{display:flex;gap:12px;margin-top:18px}
.ft-social a{width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;transition:.18s;padding:0}
.ft-social a:hover{background:var(--brass)}
.ft-social svg{width:16px;height:16px;color:#fff}
.ft-btm{border-top:1px solid rgba(255,255,255,.12);padding:19px 0;display:flex;justify-content:space-between;
  gap:14px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.52)}

/* reveal —— 无 JS 时内容默认可见，避免 JS 失效导致内容永久隐藏 */
.rv{opacity:1;transform:none}
html.js .rv{opacity:0;transform:translateY(22px);transition:opacity .65s ease,transform .65s ease}
html.js .rv.in{opacity:1;transform:none}

@media(max-width:980px){
  .split,.lb-box{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .diffs{grid-template-columns:1fr}
  .tri{grid-template-columns:1fr}
  .duo{grid-template-columns:1fr}
  .cert-grid{grid-template-columns:1fr;gap:32px}
  .ft-in{grid-template-columns:1fr 1fr;gap:32px}
  .topbar-in{flex-wrap:wrap;height:auto;padding:8px 0}
  .tb-ann{order:3;flex-basis:100%;text-align:center}
}
@media(max-width:760px){
  .nav{position:fixed;top:110px;left:0;right:0;background:var(--bg);flex-direction:column;gap:0;
    padding:10px 5%;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    transform:translateY(-140%);transition:.3s;max-height:calc(100vh - 110px);overflow:auto}
  .nav.open{transform:none}
  .nav a{padding:14px 4px;border-radius:0;border-bottom:1px solid var(--line)}
  .burger{display:flex}
  .hero-in{padding:60px 0 66px}
  .hc{width:38px;height:38px}.hc.prev{left:8px}.hc.next{right:8px}
  .sec{padding:52px 0}
  .cta{padding:38px 24px}
  .newsletter{padding:38px 24px}
  .news-form{flex-direction:column}
  .pgrid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:13px}
  .cats{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
  .ft-in{grid-template-columns:1fr;gap:28px}
  .ft-btm{flex-direction:column;gap:6px}
  .search{display:none}
}

/* ---------- Train Sets (下载自产品目录，纯白底抠图) ---------- */
.card-t .card-img{background:#fff;padding:14px}
.card-t .card-b b{font-size:13px;line-height:1.36;min-height:3.7em}
.fcnt{display:inline-block;margin-left:5px;padding:1px 6px;border-radius:9px;
  background:rgba(92,61,38,.09);font-size:10.5px;font-weight:700;color:var(--ink2);vertical-align:1px}
.fbtn.on .fcnt{background:rgba(255,255,255,.26);color:inherit}
.tr-frame{background:#fff;display:flex;align-items:center;justify-content:center;padding:18px}
.tr-frame img{width:100%;height:auto;object-fit:contain}
.lb-train .lb-media{background:#fff}
.lb-train .lb-img img{filter:none}
.lb-train .lb-thumbs button{background:#fff}
.lb-train .lb-thumbs button img{object-fit:contain}