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20px;font-weight:600;font-size:15px;color:var(--ink2)}.cert-badge b{color:var(--accent-ink)}.cta-band{background:linear-gradient(120deg,var(--panel2),var(--panel));border:1px solid var(--line2);border-radius:20px;padding:38px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;box-shadow:var(--shadow)}.cta-band h2{font-size:clamp(28px,3.4vw,38px);margin:0 0 8px;line-height:1.02;text-transform:uppercase}.cta-band p{margin:0;color:var(--ink2);font-size:16px;line-height:1.7;max-width:640px}.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:36px;align-items:start}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field{display:flex;flex-direction:column;gap:7px}.field.full{grid-column:1/-1}.field label{font-weight:600;font-size:14.5px;color:var(--ink2)}.field label i{color:var(--accent);font-style:normal}.field input,.field select,.field textarea{border:1px solid var(--line2);border-radius:10px;background:var(--panel);color:var(--ink);padding:13px 14px;font:inherit;font-size:16px;width:100%;transition:border-color .18s ease,box-shadow .18s ease}.field textarea{min-height:118px;resize:vertical}.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--ink3)}.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 24%,transparent)}.field.error input,.field.error select,.field.error textarea{border-color:#e03131}.form-note{margin:14px 0 0;font-size:15px;min-height:1.2em}.form-note.error-note{color:var(--err)}.form-note.success-note{color:var(--ok)}.nl-hp{position:absolute!important;left:-9999px!important;top:auto;width:1px;height:1px;overflow:hidden}.form-card h2{font-size:30px;margin:0 0 18px;text-transform:uppercase}.info-stack .card{margin-bottom:18px}.info-stack .card:last-child{margin-bottom:0}footer.site{background:#07080d;color:var(--hero-ink);margin-top:0;position:relative}footer.site::before{content:"";position:absolute;top:28px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent)}.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:36px;padding:64px 0 38px}footer.site .f-title{margin:0 0 14px;font-size:15px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#fff}footer.site li,footer.site p{color:#9aa3b1;font-size:15px;line-height:1.7}footer.site ul{list-style:none;margin:0;padding:0}footer.site li{margin-bottom:9px}footer.site li a{color:#9aa3b1;text-decoration:none;transition:color .18s ease}footer.site li a:hover{color:#fff}.f-bottom{border-top:1px solid #1f232d;padding:20px 0 24px;color:#6d7582;font-size:13.5px;display:flex;gap:14px;flex-wrap:wrap;justify-content:space-between}.page-head{padding:64px 0 8px;position:relative}.page-head::before{content:"";position:absolute;top:-14px;right:-24px;width:min(580px,62%);height:calc(100% + 22px);pointer-events:none;background:url(../img/truss-heads.webp) center 32%/cover no-repeat;opacity:.16;border-radius:0 0 0 24px;-webkit-mask-image:linear-gradient(90deg,transparent,#000 58%),linear-gradient(0deg,transparent,#000 30%);-webkit-mask-composite:source-in;mask-image:linear-gradient(90deg,transparent,#000 58%),linear-gradient(0deg,transparent,#000 30%);mask-composite:intersect}.page-head h1,.page-head p{position:relative;z-index:1}.page-head h1{font-size:clamp(44px,5.4vw,60px);margin:0;text-transform:uppercase;line-height:.98}.page-head h1::after{content:"";display:block;width:56px;height:4px;background:var(--accent);border-radius:2px;margin-top:16px}.page-head p{color:var(--ink2);margin:16px 0 0;max-width:660px;font-size:17px;line-height:1.7}@media (max-width:1020px){.p-grid{grid-template-columns:repeat(2,1fr)}.p-grid.cols-3{grid-template-columns:repeat(2,1fr)}.cat-grid{grid-template-columns:repeat(2,1fr)}.f-grid{grid-template-columns:1fr 1fr}.hero-stats{grid-template-columns:repeat(2,1fr)}.hero-stats div:nth-child(odd){border-left:0}.hero-stats div:nth-child(n+3){border-top:1px solid rgba(255,255,255,.1)}}@media (max-width:860px){nav.main{display:none}nav.main.open{display:flex;position:absolute;top:76px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:10px 24px 16px;z-index:59}nav.main.open a{display:block;padding:13px 6px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line);border-radius:0}nav.main.open a.active{background:0 0;color:var(--accent-ink)}nav.main.open a.btn{margin:12px 0 4px;border-bottom:0;justify-content:center;color:#fff}.nav-toggle{display:flex}.bar{gap:12px}}@media (max-width:760px){.wrap{padding:0 20px}.logo-text{font-size:24px}.cols-2,.cols-3,.contact-grid,.d-grid,.form-grid,.spec-wrap,.spec-wrap.wide{grid-template-columns:1fr}.cat-grid{grid-template-columns:1fr}.cat-tile .ic{height:190px}.p-card .fig{height:205px}.hero .wrap{padding-top:56px}.hero-stats{grid-template-columns:1fr 1fr;margin-top:44px}.hero-stats div{padding:17px 16px 19px}.hero-stats .n{font-size:35px}.news-item{flex-direction:column;gap:10px}.news-item .thumb{width:100%;height:158px}.news-item .dt{width:auto;padding-top:0}section.blk{padding:64px 0}.card{padding:24px}.d-fig{min-height:280px}.page-head{padding:44px 0 6px}.news-full .art-img{height:210px}.cta-band{padding:28px}}@media (max-width:430px){.p-grid,.p-grid.cols-3{grid-template-columns:1fr}.f-grid{grid-template-columns:1fr}.cat-tile .ic{height:168px}}.logo-img{display:block;height:34px;width:auto;max-width:200px;object-fit:contain}.f-logo-img{display:block;height:32px;width:auto;max-width:180px;object-fit:contain;margin:0 0 12px}.d-media{display:flex;flex-direction:column;gap:16px;min-width:0}.d-video{position:relative;aspect-ratio:16/9;background:#000;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow)}.d-video iframe,.d-video video{position:absolute;inset:0;width:100%;height:100%;border:0;display:block}.wa-float{position:fixed;right:22px;bottom:calc(22px + env(safe-area-inset-bottom,0px));z-index:50;display:flex;align-items:center;height:56px;padding:0 13px;border-radius:999px;background:#25d366;border:2px solid rgba(255,255,255,.92);box-shadow:0 10px 28px rgba(0,0,0,.45);color:#fff;text-decoration:none;transition:transform .2s ease,box-shadow .2s ease}.wa-float svg{flex:0 0 auto;display:block}.wa-float .wa-label{max-width:0;overflow:hidden;white-space:nowrap;font-weight:700;font-size:15px;transition:max-width .25s ease,margin-left .25s ease}@media (hover:hover) and (min-width:761px){.wa-float:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(0,0,0,.52)}.wa-float:hover .wa-label{max-width:190px;margin-left:9px}.wa-float:focus-visible{outline:3px solid #fff;outline-offset:3px}}@media (max-width:760px){.wa-float{right:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));height:54px;padding:0 12px}}@media (prefers-reduced-motion:reduce){.wa-float,.wa-float .wa-label{transition:none}}
/* 移动端溢出修复（2026-11-12 实测后补）：页头装饰图右探 24px 造成窄屏横向滚动 */
.page-head{overflow:hidden}
html,body{overflow-x:clip}
@media (max-width:760px){.wa-float{height:50px;padding:0 11px}.f-bottom{padding-bottom:88px}}

/* 语言切换防跳动（2026-11-12）：手机上英文标题 3 行、中文 2 行，副文案行数也不同，
   按较长的一版预留高度，切换语言时上方区域高度不变，不再跳动 */
@media (max-width:860px){
  .hero h1{min-height:2.82em}
  .hero .sub{min-height:7em}
}

/* ===== 鼠标交互（由 assets/js/fx.js 驱动，仅桌面端） ===== */
.hero .cursor-glow{position:absolute;top:0;left:0;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(255,178,92,.24),rgba(255,140,40,.08) 42%,transparent 65%);pointer-events:none;opacity:0;transition:opacity .45s;z-index:1}
.p-card.tilt,.cat-tile.tilt,.case-card.tilt{transition:transform .12s ease-out}
.p-card.tilt .fig::after,.cat-tile.tilt .ic::after{background:radial-gradient(340px circle at var(--mx,50%) var(--my,50%),rgba(255,255,255,.22),transparent 46%),linear-gradient(180deg,rgba(7,8,13,.06) 42%,rgba(7,8,13,.48) 100%)}
.btn-accent{position:relative;overflow:hidden}
.btn-accent::after{content:"";position:absolute;top:0;bottom:0;left:-80%;width:55%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.35),transparent);transform:skewX(-18deg);transition:left .55s ease;pointer-events:none}
.btn-accent:hover::after{left:130%}
@media (prefers-reduced-motion:reduce){.btn-accent::after{display:none}}

/* ===== 产品系列卡片：鼠标悬停动效（纯 CSS，不依赖脚本） ===== */
@keyframes nl-kenburns{from{transform:scale(1.04) translate(0,0)}to{transform:scale(1.17) translate(-2%,2%)}}
.cat-tile .ic::before{content:"";position:absolute;inset:0;z-index:2;background:linear-gradient(105deg,transparent 32%,rgba(255,255,255,.17) 48%,transparent 62%);transform:translateX(-130%);pointer-events:none}
.cat-tile:hover .ic::before{transform:translateX(130%);transition:transform .9s ease}
.cat-tile:hover .ic img{animation:nl-kenburns 3.4s ease-in-out infinite alternate}
.cat-tile:hover{transform:translateY(-7px)}
.cat-tile .cnt{transition:transform .3s ease}
.cat-tile:hover .cnt{transform:translateX(6px)}
@media (prefers-reduced-motion:reduce){.cat-tile:hover .ic img{animation:none}.cat-tile .ic::before{display:none}}

/* ===== 社媒图标与产品分享 ===== */
.f-social{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.f-social:empty{display:none}
.f-social a{width:38px;height:38px;border:1px solid var(--line2);border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:var(--ink2);transition:.2s}
.f-social a:hover{color:var(--ink);border-color:var(--accent);transform:translateY(-2px)}
.share-row{display:flex;align-items:center;gap:9px;margin-top:18px}
.share-row .share-label{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3)}
.share-btn{width:36px;height:36px;border:1px solid var(--line2);border-radius:50%;background:var(--panel);color:var(--ink2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:.2s;padding:0}
.share-btn:hover{color:#fff;border-color:var(--accent)}

/* ===== 社媒图标：品牌色实心（更醒目，覆盖前面的描边样式） ===== */
.f-social a{width:44px;height:44px;border:none;color:#fff;box-shadow:0 6px 16px rgba(0,0,0,.35)}
.f-social a:hover{color:#fff;transform:translateY(-3px);filter:brightness(1.12);box-shadow:0 10px 22px rgba(0,0,0,.45)}
.f-social a[data-net="facebook"]{background:#1877F2}
.f-social a[data-net="instagram"]{background:linear-gradient(45deg,#f09433 0%,#e6683c 25%,#dc2743 50%,#cc2366 75%,#bc1888 100%)}
.f-social a[data-net="tiktok"]{background:#000;border:1px solid var(--line2)}
.f-social a[data-net="youtube"]{background:#FF0000}
.f-social a[data-net="linkedin"]{background:#0A66C2}
.f-social a svg{width:21px;height:21px}

/* ===== 面包屑 / 产品FAQ / 响应承诺 / 常驻询盘条 ===== */
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:14px;color:var(--ink3);padding:26px 0 2px}
.crumbs a{color:var(--ink2);text-decoration:none;font-weight:600}
.crumbs a:hover{color:var(--accent-ink)}
.crumbs .cur{color:var(--ink);font-weight:700}
.crumbs .csep{opacity:.55}
.pf-list{display:grid;gap:12px;max-width:880px}
.pf-faq{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-s);padding:0 22px}
.pf-faq summary{cursor:pointer;font-weight:700;padding:16px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.pf-faq summary::-webkit-details-marker{display:none}
.pf-faq summary::after{content:"+";color:var(--accent-ink);font-size:21px;line-height:1;flex:none}
.pf-faq[open ] summary::after{content:"–"}
.pf-faq p{margin:0 0 18px;color:var(--ink2)}
.reply-badge{display:inline-block;margin-top:10px;background:var(--accent-soft);color:var(--accent-ink);font-weight:700;font-size:14px;padding:5px 12px;border-radius:999px}
.art-share{margin-top:22px}
.sticky-inquiry{display:none}
@media (max-width:860px){
  .sticky-inquiry{position:fixed;left:0;right:0;bottom:0;z-index:56;display:flex;align-items:center;gap:10px;padding:10px 14px calc(10px + env(safe-area-inset-bottom,0px));background:color-mix(in srgb,var(--bg2) 92%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--line2);transform:translateY(115%);transition:transform .3s ease}
  .sticky-inquiry.on{transform:translateY(0)}
  .sticky-inquiry .si-name{font-weight:700;font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}
  .sticky-inquiry .si-send{padding:11px 18px;font-size:15px;flex:none}
  .sticky-inquiry .si-wa{width:44px;height:44px;flex:none;border-radius:50%;background:#25d366;display:flex;align-items:center;justify-content:center}
  .sticky-inquiry .si-wa svg{width:24px;height:24px}
  body.has-si .wa-float{bottom:calc(86px + env(safe-area-inset-bottom,0px))}
}

/* ===== 二维码卡 / 询盘后WhatsApp / 404 ===== */
.qr-img{width:168px;height:168px;background:#fff;padding:10px;border-radius:14px;margin:6px 0 12px;box-sizing:border-box}
.wa-after{display:flex;align-items:center;justify-content:center;gap:9px;margin-top:14px;background:#25d366;color:#fff;font-weight:700;font-size:16px;padding:14px 20px;border-radius:12px;text-decoration:none;transition:.2s}
.wa-after:hover{filter:brightness(1.07);transform:translateY(-1px)}
.wa-after svg{width:22px;height:22px;flex:none}
.nf-wrap{text-align:center;padding:110px 0 90px}
.nf-code{font-family:'Barlow Condensed','Noto Sans SC',sans-serif;font-weight:700;font-size:120px;line-height:1;color:var(--accent-ink)}
.nf-wrap h1{font-size:30px;margin:12px 0}
.nf-wrap p{color:var(--ink2);max-width:520px;margin:0 auto 30px}
.nf-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.qr-box{margin:6px 0 12px}
.qr-box .qr-img{margin:0}
.qr-box svg{width:168px;height:168px;background:#fff;padding:10px;border-radius:14px;box-sizing:border-box;display:block}

.geo-hint{font-size:13px;color:var(--ink3);margin-top:7px}

/* Keep the mobile header usable when the translated brand name is longer. */
@media (max-width:1100px){
  .bar{gap:10px}
  .logo{flex:1 1 auto;min-width:0;overflow:hidden}
  .logo-text{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  nav.main{display:none}
  nav.main.open{display:flex;position:absolute;top:76px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:10px 24px 16px;z-index:59}
  nav.main.open a{display:block;padding:13px 6px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line);border-radius:0}
  nav.main.open a.active{background:0 0;color:var(--accent-ink)}
  nav.main.open a.btn{margin:12px 0 4px;border-bottom:0;justify-content:center;color:#fff}
  .nav-toggle{display:flex;flex:0 0 42px;width:42px;height:42px;margin:0}
}
@media (max-width:760px){
  .bar{gap:8px}
  .logo{gap:8px}
  .logo-text{font-size:clamp(17px,5vw,24px)}
  .lang{gap:1px;padding:2px}
  .lang button{padding:5px 8px;font-size:12px}
  .nav-toggle{flex-basis:40px;width:40px;height:40px}
}
@media (max-width:360px){
  .wrap{padding-left:14px;padding-right:14px}
  .bar{gap:6px}
  .logo{gap:6px}
  .logo svg{width:26px;height:26px}
  .logo-text{font-size:17px}
  .lang button{padding:5px 6px;font-size:11px}
  .nav-toggle{flex-basis:38px;width:38px;height:38px}
}@media (max-width:760px){.lang button{padding:11px 12px}.share-btn{width:44px;height:44px}footer.site li a{display:inline-block;padding:6px 0}}