@charset "UTF-8";
/* BONSHIN — refined industrial theme: deep navy · champagne gold · ivory */
@font-face{font-family:"Manrope";src:url(/assets/fonts/manrope-latin-wght-normal.woff2) format("woff2");font-weight:200 800;font-style:normal;font-display:swap}
@font-face{font-family:"Inter";src:url(/assets/fonts/inter-latin-wght-normal.woff2) format("woff2");font-weight:100 900;font-style:normal;font-display:swap}

:root{
  --navy-950:#06121f;--navy-900:#0a1b2e;--navy:#0e2640;--navy-700:#1b3a5a;--ink:#0f2238;--muted:#5d6b79;--muted-2:#8794a1;
  --gold:#b08d57;--gold-600:#9a7a48;--gold-300:#d6c29c;--gold-100:#efe6d6;
  --red:#c41e2c;
  --paper:#ffffff;--ivory:#faf8f4;--mist:#f4f1ea;--line:#e5e0d6;--line-cool:#dfe3e8;
  --display:"Manrope","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --body:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-soft:0 1px 2px rgba(10,27,46,.04),0 18px 40px -18px rgba(10,27,46,.18);
  --max:1320px;--gutter:clamp(22px,5vw,80px)
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 var(--body);font-feature-settings:"ss01","cv11";-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}
::selection{background:var(--gold-100);color:var(--navy-900)}
h1,h2,h3,h4,p{margin-top:0}
h1,h2,h3{font-family:var(--display);color:inherit;line-height:1.1;letter-spacing:-.025em;font-weight:500}
h1{font-size:clamp(42px,4.8vw,76px);font-weight:400;letter-spacing:-.03em;margin-bottom:30px}
h2{font-size:clamp(32px,3.3vw,52px);font-weight:400;letter-spacing:-.03em;margin-bottom:26px}
h3{font-size:23px;margin-bottom:14px;font-weight:600;letter-spacing:-.015em}
p{margin-bottom:20px}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}
img{max-width:100%;display:block}
svg{display:block}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--gold);outline-offset:4px}
button:disabled{opacity:.5;cursor:default}
.container{width:min(calc(100% - var(--gutter)*2),var(--max));margin-inline:auto}
.section{padding-block:clamp(72px,9vw,140px)}
.muted{color:var(--muted)}

/* Eyebrow: gold label with a fine rule */
.eyebrow{display:inline-flex;align-items:center;gap:14px;font:600 12px/1.4 var(--body);text-transform:uppercase;letter-spacing:.22em;margin-bottom:26px;color:var(--gold-600)}
.eyebrow:before{content:"";width:34px;height:1px;background:currentColor;flex-shrink:0}
.lead{font-size:clamp(17px,1.35vw,20px);line-height:1.7;color:var(--muted);max-width:640px;font-weight:350}
.intro{max-width:760px;margin-bottom:56px}
.intro.wide{max-width:960px}
.rule{border-top:1px solid var(--line)}
.pale{background:var(--ivory)}
.dark{background:var(--navy-900);color:#fff;position:relative;isolation:isolate;overflow:hidden}
.dark:before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(900px 500px at 85% 10%,rgba(176,141,87,.14),transparent 60%),radial-gradient(700px 500px at 0% 100%,rgba(27,58,90,.55),transparent 65%)}
.dark .lead,.dark .muted{color:#b7c3cf}
.dark .eyebrow{color:var(--gold-300)}

/* Buttons */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:54px;padding:15px 30px;border:1px solid var(--navy-900);background:var(--navy-900);color:#fff;font:600 13px/1.4 var(--body);letter-spacing:.12em;text-transform:uppercase;transition:background .35s var(--ease),border-color .35s var(--ease),color .35s var(--ease)}
.btn:after{content:"";width:16px;height:9px;flex-shrink:0;background:currentColor;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 9'%3E%3Cpath d='M0 4.5h14.5M11 1l3.5 3.5L11 8' fill='none' stroke='black' stroke-width='1.2'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 9'%3E%3Cpath d='M0 4.5h14.5M11 1l3.5 3.5L11 8' fill='none' stroke='black' stroke-width='1.2'/%3E%3C/svg%3E") center/contain no-repeat;transition:transform .35s var(--ease)}
.btn:hover:after{transform:translateX(4px)}
.btn:hover{background:var(--navy-700);border-color:var(--navy-700)}
.btn.red{background:var(--navy-900);border-color:var(--navy-900);color:#fff;box-shadow:inset 0 -2px 0 var(--gold)}
.btn.red:hover{background:var(--gold-600);border-color:var(--gold-600);box-shadow:none}
.btn.light{background:transparent;color:var(--navy-900);border-color:rgba(14,38,64,.28)}
.btn.light:hover{background:transparent;border-color:var(--gold);color:var(--gold-600)}
.dark .btn.light{color:#fff;border-color:rgba(255,255,255,.35)}
.dark .btn.light:hover{border-color:var(--gold-300);color:var(--gold-300)}
.lang-zh .btn{letter-spacing:.08em}
.actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.text-link{display:inline-flex;align-items:center;gap:10px;font:600 13px/1.4 var(--body);letter-spacing:.12em;text-transform:uppercase;color:var(--navy-900);padding-bottom:8px;background:linear-gradient(var(--gold),var(--gold)) left bottom/100% 1px no-repeat;transition:color .3s,background-size .45s var(--ease)}
.text-link:after{content:"→";font-weight:400;transition:transform .35s var(--ease)}
.text-link:hover{color:var(--gold-600);background-size:40% 1px}
.text-link:hover:after{transform:translateX(4px)}
.caption{font-size:12.5px;line-height:1.6;color:var(--muted-2);margin:16px 0 0;letter-spacing:.01em}
.skip{position:fixed;left:20px;top:-80px;z-index:1000;background:#fff;padding:12px 16px;box-shadow:var(--shadow-soft)}
.skip:focus{top:10px}

/* Utility bar + header */
.utility{background:var(--navy-950);color:#9fb0c0;font-size:11.5px;letter-spacing:.14em}
.utility .container{display:flex;justify-content:space-between;padding-block:9px}
.utility a{color:var(--gold-300);letter-spacing:.04em;transition:color .3s}
.utility a:hover{color:#fff}
.site-header{background:rgba(255,255,255,.92);-webkit-backdrop-filter:saturate(1.4) blur(14px);backdrop-filter:saturate(1.4) blur(14px);position:sticky;top:0;z-index:50;border-bottom:1px solid transparent;transition:border-color .35s,box-shadow .35s}
.site-header.scrolled,.site-header:hover{border-bottom-color:var(--line)}
.site-header.scrolled{box-shadow:0 10px 30px -20px rgba(10,27,46,.25)}
.header-inner{display:flex;align-items:center;gap:34px;min-height:92px;transition:min-height .35s var(--ease)}
.site-header.scrolled .header-inner{min-height:74px}
.brand{width:132px;flex-shrink:0}
.brand img{width:132px;height:52px;object-fit:contain}
.main-nav{display:flex;align-items:center;gap:30px;margin-left:auto}
.main-nav>a{font-size:13.5px;font-weight:500;letter-spacing:.02em;white-space:nowrap;position:relative;padding-block:12px;color:var(--ink);transition:color .3s}
.main-nav>a:after{content:"";height:1px;position:absolute;background:var(--gold);bottom:4px;left:0;right:0;transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease)}
.main-nav>a:hover{color:var(--gold-600)}
.main-nav>a:hover:after,.main-nav>a[aria-current=page]:after{transform:scaleX(1)}
.main-nav>a[aria-current=page]{color:var(--navy-900);font-weight:600}
.language-switch{display:flex;gap:2px;border-left:1px solid var(--line);padding-left:22px}
.language-switch button{background:none;border:0;color:var(--muted-2);font-size:12px;font-weight:600;letter-spacing:.08em;padding:6px 8px;transition:color .3s}
.language-switch button:hover{color:var(--navy-900)}
.language-switch button[aria-pressed=true]{color:var(--gold-600)}
.menu-toggle{display:none;background:none;border:1px solid var(--line);padding:9px 14px;color:var(--navy-900);font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase}

/* Home hero */
.hero{display:grid;grid-template-columns:1fr 1fr;min-height:clamp(620px,78vh,820px);background:var(--ivory)}
.hero-copy{padding:80px 70px 80px max(var(--gutter),calc((100vw - var(--max))/2));align-self:center}
.hero-copy h1{max-width:700px}
.hero-copy .lead{max-width:540px}
.hero-copy .actions{margin-top:42px}
.hero-visual{background:radial-gradient(60% 55% at 50% 46%,#24496f 0%,#10294a 45%,var(--navy-950) 100%);position:relative;min-height:600px;overflow:hidden;display:flex;justify-content:center;align-items:center;isolation:isolate}
.hero-visual:before{content:"";position:absolute;left:48px;right:48px;top:64px;bottom:96px;border:1px solid rgba(214,194,156,.28);z-index:-1}
.hero-visual:after{content:"";position:absolute;left:50%;bottom:118px;width:56%;height:46px;transform:translateX(-50%);background:radial-gradient(closest-side,rgba(0,0,0,.55),transparent);filter:blur(6px);z-index:-1}
.hero-visual .hero-product{height:min(480px,56vh);width:70%;object-fit:contain;position:relative;z-index:2;margin-bottom:30px;filter:drop-shadow(0 30px 40px rgba(0,0,0,.35));animation:float-in 1.4s var(--ease) both}
.hero-side{position:absolute;left:48px;top:30px;font-size:10.5px;letter-spacing:.32em;color:var(--gold-300);font-weight:500}
.hero-visual .visual-label{position:absolute;bottom:0;left:0;right:0;padding:24px 48px;background:rgba(6,18,31,.6);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-top:1px solid rgba(214,194,156,.22);color:#fff;display:flex;gap:25px;align-items:center;justify-content:space-between;font-size:14px}
.visual-label strong{font-family:var(--display);font-weight:500;font-size:15px;letter-spacing:.01em;color:#fff}
.visual-label>span{color:var(--gold-300);font-size:11px;letter-spacing:.18em;text-transform:uppercase}
.lang-zh .visual-label>span{letter-spacing:.08em}
@keyframes float-in{from{opacity:0;transform:translateY(24px) scale(.98)}to{opacity:1;transform:none}}

.trust-strip{border-bottom:1px solid var(--line);background:#fff}
.trust-strip .container{display:grid;grid-template-columns:repeat(3,1fr);padding-block:38px}
.trust-item{padding:0 40px;border-right:1px solid var(--line)}
.trust-item:first-child{padding-left:0}
.trust-item:last-child{border:0}
.trust-item strong{display:block;font-family:var(--display);font-size:19px;font-weight:600;letter-spacing:-.01em;margin-bottom:4px;color:var(--navy-900)}
.trust-item>span{font-size:14px;color:var(--muted)}

.section-heading{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:56px}
.section-heading .intro{margin:0}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:48px}

/* Product cards */
.product-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);position:relative;transition:box-shadow .5s var(--ease),transform .5s var(--ease),border-color .5s}
.product-card:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--gold);transform:scaleX(0);transform-origin:left;transition:transform .6s var(--ease)}
.product-card:hover{box-shadow:var(--shadow-soft);transform:translateY(-4px);border-color:transparent}
.product-card:hover:after{transform:scaleX(1)}
.product-card .product-image{height:380px;background:radial-gradient(70% 60% at 50% 45%,#fff 0%,var(--mist) 100%);display:flex;justify-content:center;align-items:center;position:relative;overflow:hidden}
.product-card img{height:80%;width:80%;object-fit:contain;transition:transform .8s var(--ease);filter:drop-shadow(0 18px 22px rgba(10,27,46,.16))}
.product-card:hover img{transform:translateY(-6px) scale(1.03)}
.product-card .product-copy{padding:36px 40px 38px;flex:1;display:flex;flex-direction:column}
.product-card h3{font-size:30px;font-weight:500;letter-spacing:-.025em}
.product-card .product-copy>p{color:var(--muted)}
.product-meta{display:flex;flex-wrap:wrap;gap:9px 28px;border-top:1px solid var(--line);padding-top:18px;margin-top:auto;font-size:13px;letter-spacing:.04em;color:var(--navy-700);font-weight:500}
.product-card .eyebrow{margin-bottom:14px;font-size:11px}
.product-card .text-link{align-self:flex-start;margin-top:22px}
.card-number{position:absolute;left:28px;top:24px;font-size:11px;color:var(--gold-600);letter-spacing:.22em;font-weight:600}

/* Features */
.feature{padding-top:34px;border-top:1px solid var(--line);position:relative}
.feature:before{content:"";position:absolute;top:-1px;left:0;width:56px;height:1px;background:var(--gold);transition:width .6s var(--ease)}
.feature:hover:before{width:100%}
.feature-number{display:block;font-family:var(--display);font-size:13px;font-weight:600;color:var(--gold-600);margin-bottom:28px;letter-spacing:.2em}
.feature h3{font-size:24px;font-weight:500}
.feature p{color:var(--muted);font-size:15.5px}

/* Split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(48px,7vw,110px);align-items:center}
.split .photo{height:520px;width:100%;object-fit:cover}
.split .portrait-photo{height:580px}
.case-photo{position:relative}
.case-photo:before{content:"";position:absolute;top:-18px;right:-18px;width:42%;height:42%;border-top:1px solid var(--gold);border-right:1px solid var(--gold);opacity:.7;pointer-events:none}
.case-photo .caption{color:#93a3b3}
.case-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid rgba(255,255,255,.12);margin-top:72px;padding-top:0}
.case-stats>div{padding:44px 28px 0 0;border-right:1px solid rgba(255,255,255,.08);margin-right:28px}
.case-stats>div:last-child{border-right:0;margin-right:0}
.case-stats strong{font-family:var(--display);font-size:clamp(44px,4.4vw,68px);line-height:1;display:block;margin-bottom:16px;font-weight:300;letter-spacing:-.04em;color:var(--gold-300)}
.case-stats>div>span{font-size:13.5px;line-height:1.55;display:block;color:#c6d1db}
.case-note{font-size:12.5px;color:#8d9eaf;margin-top:36px;max-width:880px}

/* Steps */
.steps{counter-reset:steps;display:grid;grid-template-columns:repeat(4,1fr);gap:40px;margin-top:56px}
.step{border-top:1px solid var(--line);padding-top:30px;position:relative}
.step:before{content:"";position:absolute;top:-4px;left:0;width:7px;height:7px;background:var(--gold);transform:rotate(45deg)}
.step b{display:block;font-family:var(--display);color:var(--gold-600);font-size:13px;letter-spacing:.2em;font-weight:600;margin-bottom:26px}
.step h3{font-size:23px;font-weight:500}
.step p{font-size:15px;color:var(--muted)}

/* CTA band */
.cta-band{padding-block:clamp(64px,7vw,104px);background:var(--gold-100);color:var(--navy-900);position:relative;overflow:hidden;isolation:isolate}
.cta-band:before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(600px 300px at 90% 50%,rgba(255,255,255,.7),transparent 70%),linear-gradient(90deg,transparent 0 calc(100% - 1px),rgba(176,141,87,.12) 0) 0 0/120px 100%}
.cta-band .container{display:flex;justify-content:space-between;align-items:center;gap:40px}
.cta-band h2{font-size:clamp(30px,3vw,46px);margin-bottom:12px;max-width:800px}
.cta-band p{margin:0;color:#5a5244}
.cta-band .btn{background:var(--navy-900);color:#fff;border-color:var(--navy-900);flex-shrink:0}
.cta-band .btn:hover{background:var(--gold-600);border-color:var(--gold-600)}

/* Footer */
.site-footer{background:var(--ivory);color:var(--ink);padding:88px 0 32px;position:relative}
.site-footer:before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--gold) 20%,var(--gold) 80%,transparent);opacity:.5}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:48px}
.footer-brand{display:inline-block;background:transparent;padding:0;margin-bottom:26px;width:160px}
.footer-brand img{width:160px;height:auto;object-fit:contain}
.site-footer h3{font-family:var(--body);font-size:11.5px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;margin-bottom:24px;color:var(--gold-600)}
.lang-zh .site-footer h3{letter-spacing:.12em}
.site-footer p,.site-footer a{font-size:14px;color:var(--navy-700)}
.site-footer p{max-width:300px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.site-footer a{transition:color .3s}
.site-footer a:hover{color:var(--gold-600)}
.footer-bottom{border-top:1px solid var(--line);padding-top:28px;margin-top:64px;display:flex;justify-content:space-between;gap:20px;font-size:12px;letter-spacing:.04em;color:#7f90a1}

/* Inner page intro */
.breadcrumb{font-size:12px;letter-spacing:.08em;color:var(--muted-2);padding:28px 0 0}
.breadcrumb a{transition:color .3s}
.breadcrumb a:hover{color:var(--gold-600)}
.page-intro{padding:clamp(64px,8vw,120px) 0 clamp(64px,7vw,104px);background:var(--navy-900);color:#fff;position:relative;overflow:hidden;isolation:isolate}
.page-intro:before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(800px 420px at 92% 0%,rgba(176,141,87,.18),transparent 62%),radial-gradient(600px 400px at 0% 100%,rgba(27,58,90,.6),transparent 70%)}
.page-intro:after{content:"";position:absolute;right:var(--gutter);bottom:0;width:min(30vw,380px);height:1px;background:linear-gradient(90deg,transparent,var(--gold))}
.page-intro .eyebrow{margin-bottom:22px;color:var(--gold-300)}
.page-intro h1{font-size:clamp(40px,4.6vw,70px);max-width:980px}
.page-intro p{margin-bottom:0}
.page-intro .lead{color:#b7c3cf}
.page-intro .breadcrumb{padding-top:0;margin-bottom:40px;color:#8d9eaf}
.page-intro .breadcrumb a:hover{color:var(--gold-300)}

/* Product detail */
.product-hero{display:grid;grid-template-columns:1fr 1.05fr;gap:clamp(48px,6vw,96px);align-items:center;padding-block:48px 96px}
.product-stage{overflow:hidden;height:560px;background:radial-gradient(60% 55% at 50% 46%,#24496f 0%,#10294a 50%,var(--navy-950) 100%);padding:48px;display:flex;align-items:center;justify-content:center;position:relative;isolation:isolate}
.product-stage:before{content:"";position:absolute;inset:26px;border:1px solid rgba(214,194,156,.25);z-index:-1}
.product-stage img{height:100%;width:100%;object-fit:contain;filter:drop-shadow(0 30px 34px rgba(0,0,0,.4))}
.product-hero h1{font-size:clamp(38px,3.9vw,60px)}
.product-hero .caption{font-size:12.5px}
.spec-highlights{display:grid;grid-template-columns:1fr 1fr;gap:24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding-block:26px;margin:30px 0 36px}
.spec-highlights>div+div{border-left:1px solid var(--line);padding-left:24px}
.spec-highlights span{display:block;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2);margin-bottom:10px}
.lang-zh .spec-highlights span{letter-spacing:.06em}
.spec-highlights strong{font-family:var(--display);font-size:26px;font-weight:500;letter-spacing:-.02em;color:var(--navy-900)}
.tabs{display:flex;border-bottom:1px solid var(--line);gap:44px;position:relative}
.tabs button{border:0;background:transparent;padding:24px 0;font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-2);position:relative;transition:color .3s}
.tabs button:hover{color:var(--navy-900)}
.tabs button[aria-selected=true]{color:var(--navy-900)}
.tabs button[aria-selected=true]:after{content:"";position:absolute;height:2px;bottom:-1px;background:var(--gold);left:0;right:0}
.tab-panel{padding:56px 0 24px}
.tab-panel[hidden]{display:none}
.spec-table{border-collapse:collapse;width:100%;max-width:100%;text-align:left;font-size:15.5px}
.spec-table th,.spec-table td{padding:22px 28px;border-bottom:1px solid var(--line);vertical-align:top}
.spec-table tr:first-child th,.spec-table tr:first-child td{border-top:1px solid var(--navy-900)}
.spec-table th{width:30%;font-weight:600;font-size:13px;letter-spacing:.06em;color:var(--navy-700);background:var(--ivory)}
.spec-table td{color:var(--ink)}
.spec-note{padding:24px 28px;border-left:2px solid var(--gold);background:var(--ivory);font-size:15px;margin-top:32px;max-width:1050px;color:var(--muted)}
.plain-list{padding-left:0;margin:0;list-style:none}
.plain-list li{margin-bottom:14px;padding-left:26px;position:relative}
.plain-list li:before{content:"";position:absolute;left:0;top:.72em;width:12px;height:1px;background:var(--gold)}

/* Applications */
.application-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.application-item{border:1px solid var(--line);background:#fff;padding:36px 32px 32px;transition:box-shadow .5s var(--ease),transform .5s var(--ease),border-color .5s}
.application-item:hover{box-shadow:var(--shadow-soft);transform:translateY(-3px);border-color:transparent}
.application-item img{height:160px;width:100%;object-fit:contain;margin-bottom:30px}
.application-item h3{font-size:21px;font-weight:600}
.application-item p{font-size:14.5px;color:var(--muted);margin:0}
.application-feature{display:grid;grid-template-columns:1fr 1fr;gap:clamp(48px,7vw,110px);align-items:center}
.application-feature+.application-feature{border-top:1px solid var(--line);margin-top:110px;padding-top:110px}
.application-feature .scene{height:480px;width:100%;object-fit:cover}
.equipment-list{display:flex;gap:10px;flex-wrap:wrap;font-size:12.5px;letter-spacing:.04em;color:var(--navy-900);padding:0;margin:30px 0 36px;list-style:none}
.equipment-list li{border:1px solid var(--gold-300);padding:7px 14px;background:#fff}
.filter-bar{display:flex;justify-content:space-between;gap:25px;align-items:center;margin-bottom:44px;padding-bottom:28px;border-bottom:1px solid var(--line)}
.filter-buttons{display:flex;gap:8px;flex-wrap:wrap}
.filter-buttons button{border:1px solid var(--line);background:#fff;padding:11px 20px;font-size:13px;font-weight:500;letter-spacing:.04em;color:var(--navy-900);transition:all .3s}
.filter-buttons button:hover{border-color:var(--gold)}
.filter-buttons button[aria-pressed=true]{background:var(--navy-900);color:#fff;border-color:var(--navy-900)}
.search-field{width:min(340px,100%)}
.search-field input{width:100%;border:0;border-bottom:1px solid var(--navy-700);padding:12px 2px;border-radius:0;background:transparent;color:var(--ink);transition:border-color .3s}
.search-field input:focus{outline:0;border-bottom-color:var(--gold)}
.search-field label{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
.empty-state{padding:56px;text-align:center;background:var(--ivory)}
[hidden]{display:none!important}

/* OEM / about */
.process-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0 80px}
.process-row{display:grid;grid-template-columns:64px 1fr;gap:24px;border-top:1px solid var(--line);padding:36px 0}
.process-row .num{font-family:var(--display);color:var(--gold-600);font-size:28px;font-weight:300;letter-spacing:-.02em}
.process-row h3{font-size:23px;font-weight:500}
.process-row p{color:var(--muted);margin:0}
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 32px}
.check-grid div{border-bottom:1px solid var(--line);padding:18px 0 18px 28px;font-size:15.5px;position:relative}
.check-grid div:before{content:"";position:absolute;left:0;top:50%;width:7px;height:7px;background:var(--gold);transform:translateY(-50%) rotate(45deg)}
.dark .check-grid div{border-color:rgba(255,255,255,.12)}
.company-statement{font-family:var(--display);font-size:clamp(26px,2.7vw,42px);line-height:1.38;letter-spacing:-.025em;font-weight:300;max-width:1080px;color:var(--navy-900)}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;border-top:1px solid var(--line);padding-top:40px;margin-top:64px}
.facts strong{font-family:var(--display);font-size:clamp(34px,3.4vw,52px);font-weight:300;letter-spacing:-.035em;display:block;color:var(--navy-900);line-height:1.1;margin-bottom:8px}
.facts>div>span{color:var(--muted);font-size:14px}

/* Resources */
.resource-row{display:grid;grid-template-columns:84px 1fr auto;gap:36px;align-items:center;padding:36px 0;border-bottom:1px solid var(--line);transition:background .4s}
.resource-row:first-of-type{border-top:1px solid var(--navy-900)}
.resource-type{height:100px;display:flex;justify-content:center;align-items:flex-end;padding-bottom:14px;background:linear-gradient(135deg,var(--navy) 0%,var(--navy-950) 100%);color:var(--gold-300);font-size:12px;letter-spacing:.18em;font-weight:600;position:relative;clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,0 100%)}
.resource-type:before{content:"";position:absolute;top:0;right:0;width:18px;height:18px;background:var(--gold)}
.resource-row h3,.resource-row h2{font-size:23px;font-weight:500;margin-bottom:8px;letter-spacing:-.015em}
.resource-row p{font-size:14px;color:var(--muted);margin:0}
.resource-row .actions{justify-content:flex-end}
.resource-row .btn{min-height:46px;padding:11px 20px;font-size:12px}

/* Contact */
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(48px,7vw,110px);align-items:start}
.contact-info{background:var(--navy-900);color:#fff;padding:52px 48px;position:relative;isolation:isolate;overflow:hidden}
.contact-info:before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(500px 300px at 100% 0%,rgba(176,141,87,.18),transparent 65%)}
.contact-info:after{content:"";position:absolute;left:48px;top:0;width:56px;height:2px;background:var(--gold)}
.contact-info h2{font-size:32px;font-weight:400}
.contact-info a{word-break:break-word;transition:color .3s}
.contact-info a:hover{color:var(--gold-300)}
.contact-info p{color:#d0dae3}
.contact-info .contact-label{color:var(--gold-300);text-transform:uppercase;font-size:11px;letter-spacing:.2em;margin-bottom:8px}
.contact-block{border-top:1px solid rgba(255,255,255,.1);padding:24px 0 0;margin-top:24px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px 28px}
.form-field.full{grid-column:1/-1}
.form-field label{display:block;font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--navy-700);margin-bottom:10px}
.lang-zh .form-field label{letter-spacing:.04em;font-size:13px}
.form-field input,.form-field select,.form-field textarea{width:100%;padding:13px 16px;color:var(--ink);border:1px solid var(--line-cool);background:var(--ivory);border-radius:0;min-height:52px;transition:border-color .3s,background .3s,box-shadow .3s}
.form-field input:hover,.form-field select:hover,.form-field textarea:hover{border-color:#c9ced5}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{outline:0;border-color:var(--gold);background:#fff;box-shadow:0 0 0 4px rgba(176,141,87,.12)}
.form-field textarea{min-height:160px;resize:vertical}
.form-note{font-size:13.5px;color:var(--muted);margin:28px 0}
.required{color:var(--red)}
.inquiry-output{margin-top:40px;padding:36px;background:var(--ivory);border:1px solid var(--line);border-top:2px solid var(--gold)}
.inquiry-output h3{font-size:23px;font-weight:500}
.inquiry-output textarea{width:100%;min-height:220px;border:1px solid var(--line-cool);padding:16px;font:14px/1.65 var(--body);background:#fff;color:var(--ink);margin-bottom:22px}
.status{font-size:14px;margin:14px 0 0;color:var(--gold-600)}
.mobile-only{display:none}

/* Language */
.lang-en .zh,.lang-zh .en{display:none!important}
.lang-zh h1,.lang-zh h2,.lang-zh h3{letter-spacing:.01em;line-height:1.3;font-weight:500}
.lang-zh h1{font-weight:600}
.lang-zh .company-statement{font-weight:400;letter-spacing:.01em;line-height:1.6}
.lang-zh .eyebrow{letter-spacing:.14em}
.lang-zh .main-nav{gap:30px}
.lang-zh .main-nav>a{letter-spacing:.06em}
.lang-zh .text-link,.lang-zh .tabs button{letter-spacing:.06em}

/* Scroll reveal (enabled by JS only) */
.reveal-on .rv{opacity:0;transform:translateY(28px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.reveal-on .rv.in{opacity:1;transform:none}

@media(min-width:1650px){
  .hero-copy{padding-right:100px}
  .hero-visual .hero-product{height:540px}
}

@media(max-width:1190px){
  .header-inner{gap:22px}
  .main-nav,.lang-zh .main-nav{gap:18px}
  .main-nav>a{font-size:13px}
  .brand,.brand img{width:112px}
  .language-switch{padding-left:12px}
  .hero-copy{padding-right:40px}
  .hero-visual .hero-product{height:460px}
  .product-hero{gap:44px}
  .footer-grid{gap:30px}
  .case-stats>div{padding-right:18px;margin-right:18px}
}

@media(max-width:950px){
  .utility .container>a{display:none}
  .header-inner,.site-header.scrolled .header-inner{min-height:74px}
  .brand,.brand img{width:118px}
  .menu-toggle{display:block;margin-left:auto}
  .language-switch{border:0;padding:0}
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;padding:12px var(--gutter) 28px;border-bottom:1px solid var(--line);margin:0;box-shadow:0 24px 30px -18px rgba(10,27,46,.2)}
  .main-nav.open{display:flex;flex-direction:column;align-items:stretch;gap:0;animation:drop .35s var(--ease)}
  .main-nav>a{padding:16px 0;font-size:16px;border-bottom:1px solid var(--line)}
  .main-nav>a:after{display:none}
  .main-nav>a[aria-current=page]{color:var(--gold-600)}
  .hero{grid-template-columns:1fr 1fr}
  .hero-copy{padding-top:56px;padding-bottom:56px}
  .hero h1{font-size:46px}
  .hero-visual .hero-product{height:420px;width:82%}
  .hero-visual .visual-label{padding:18px 24px;display:block}
  .hero-visual:before{left:24px;right:24px}
  .hero-side{left:24px}
  .visual-label>span{display:block;margin-top:4px}
  .trust-item{padding-inline:22px}
  .trust-item strong{font-size:17px}
  .trust-item>span{font-size:13px}
  .grid3{gap:32px}
  .feature h3{font-size:22px}
  .product-card .product-copy{padding:28px}
  .product-card h3{font-size:25px}
  .product-card .product-image{height:310px}
  .steps{grid-template-columns:1fr 1fr;gap:44px 32px}
  .split .photo{height:420px}
  .case-stats{grid-template-columns:1fr 1fr}
  .case-stats>div{border-right:0;margin-right:0;padding-right:0}
  .footer-grid{grid-template-columns:1.3fr 1fr}
  .product-stage{height:440px}
  .product-hero h1{font-size:40px}
  .application-grid{grid-template-columns:repeat(2,1fr)}
  .process-list{gap:0 40px}
  .contact-grid{grid-template-columns:1fr}
  .contact-info{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 32px}
  .contact-info>h2{grid-column:1/-1}
  .contact-block{margin-top:0}
  .cta-band .container{align-items:start;flex-direction:column}
}
@keyframes drop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

@media(max-width:650px){
  :root{--gutter:22px}
  body{font-size:15.5px}
  .utility{font-size:10.5px;letter-spacing:.12em}
  .header-inner,.site-header.scrolled .header-inner{min-height:66px;gap:12px}
  .brand,.brand img{width:104px}
  .brand img{height:44px}
  .language-switch{gap:0}
  .language-switch button{padding:6px}
  .menu-toggle{font-size:11px;padding:8px 11px}
  .hero{grid-template-columns:1fr;min-height:0}
  .hero-copy{padding:56px var(--gutter) 52px}
  .hero h1{font-size:40px;line-height:1.1}
  .hero .eyebrow{font-size:11px;margin-bottom:22px}
  .hero-copy .actions{margin-top:32px}
  .hero-copy .btn{flex:1 1 auto}
  .hero-visual{min-height:460px}
  .hero-visual .hero-product{height:300px;width:74%;margin-bottom:60px}
  .hero-visual:before{top:44px;bottom:88px;left:18px;right:18px}
  .hero-visual:after{bottom:96px}
  .hero-side{top:16px;left:18px;font-size:9px}
  .hero-visual .visual-label{display:flex;gap:15px;padding:16px 18px}
  .hero-visual .visual-label>span{font-size:9.5px;max-width:150px;text-align:right}
  .trust-strip .container{grid-template-columns:1fr;gap:20px;padding-block:30px}
  .trust-item,.trust-item:first-child{border-right:0;border-bottom:1px solid var(--line);padding:0 0 20px}
  .trust-item:last-child{padding-bottom:0;border:0}
  .section{padding-block:72px}
  .section-heading{flex-direction:column;align-items:start;gap:22px;margin-bottom:36px}
  .intro{margin-bottom:40px}
  h2{font-size:32px}
  .grid2,.grid3,.split,.product-hero,.application-feature{grid-template-columns:1fr}
  .grid2{gap:24px}
  .grid3{gap:40px}
  .feature{padding-top:26px}
  .feature-number{margin-bottom:18px}
  .product-card .product-image{height:280px}
  .product-card .product-copy{padding:26px 24px 28px}
  .product-card h3{font-size:25px}
  .product-meta{font-size:12.5px}
  .split .photo{height:300px}
  .split .portrait-photo{height:340px}
  .case-photo:before{top:-10px;right:-10px}
  .case-stats{grid-template-columns:1fr 1fr;margin-top:48px}
  .case-stats>div{padding-top:30px}
  .case-stats strong{font-size:42px}
  .case-stats>div>span{font-size:12.5px}
  .steps{grid-template-columns:1fr;gap:36px}
  .step h3{font-size:21px}
  .step p{font-size:14.5px}
  .cta-band h2{font-size:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px 20px}
  .footer-grid>div:first-child{grid-column:1/-1}
  .footer-grid>div:last-child{grid-column:1/-1}
  .footer-bottom{flex-direction:column;font-size:11.5px;gap:8px;margin-top:48px}
  .site-footer{padding-top:64px}
  .page-intro{padding:56px 0 60px}
  .page-intro .breadcrumb{margin-bottom:30px}
  .page-intro h1{font-size:38px}
  .page-intro .lead{font-size:16.5px}
  .product-hero{padding:28px 0 64px;gap:36px}
  .product-stage{height:380px;padding:32px}
  .product-stage:before{inset:14px}
  .product-hero h1{font-size:36px}
  .spec-highlights strong{font-size:21px}
  .spec-highlights>div+div{padding-left:18px}
  .tabs{gap:24px;overflow-x:auto;scrollbar-width:none}
  .tabs button{font-size:11.5px;padding:18px 0;white-space:nowrap}
  .spec-table{font-size:14px}
  .spec-table th,.spec-table td{padding:16px 14px}
  .spec-table th{width:36%;font-size:12px}
  .tab-panel{padding-top:32px}
  .spec-note{font-size:14px;padding:20px}
  .application-grid{grid-template-columns:1fr;gap:16px}
  .application-item{display:grid;grid-template-columns:100px 1fr;gap:20px;align-items:center;padding:22px}
  .application-item img{height:84px;margin:0}
  .application-item h3{font-size:19px;margin-bottom:6px}
  .application-item p{font-size:13.5px}
  .application-feature .scene{height:300px}
  .application-feature+.application-feature{margin-top:64px;padding-top:64px}
  .filter-bar{flex-direction:column;align-items:stretch}
  .search-field{width:100%}
  .filter-buttons button{padding:9px 14px;font-size:12.5px}
  .process-list{grid-template-columns:1fr}
  .process-row{grid-template-columns:44px 1fr;gap:16px;padding:28px 0}
  .process-row .num{font-size:24px}
  .process-row h3{font-size:21px}
  .check-grid{grid-template-columns:1fr}
  .facts{grid-template-columns:1fr;gap:28px;margin-top:44px}
  .facts strong{font-size:38px}
  .resource-row{grid-template-columns:56px 1fr;gap:20px;padding:28px 0}
  .resource-type{width:56px;height:72px;font-size:10px;padding-bottom:10px;clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,0 100%)}
  .resource-type:before{width:12px;height:12px}
  .resource-row h3,.resource-row h2{font-size:20px}
  .resource-row .actions{grid-column:2;justify-content:start;gap:9px}
  .resource-row .btn{min-height:42px;padding:9px 14px;font-size:11px}
  .contact-info{padding:40px 28px;display:block}
  .contact-info:after{left:28px}
  .contact-block{margin-top:22px}
  .form-grid{grid-template-columns:1fr;gap:22px}
  .form-field.full{grid-column:auto}
  .inquiry-output{padding:24px}
  .contact-grid{gap:44px}
  .lead{font-size:16.5px}
  .btn{padding:14px 22px;min-height:52px}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*:before,*:after{transition:none!important;animation:none!important}
  .reveal-on .rv{opacity:1;transform:none}
}

/* Supplementary blocks */
.application-product{background:radial-gradient(70% 60% at 50% 45%,#fff 0%,var(--mist) 100%);padding:48px;position:relative}
.application-product:before{content:"";position:absolute;inset:18px;border:1px solid var(--line);pointer-events:none}
.application-product img{width:100%;height:360px;object-fit:contain;filter:drop-shadow(0 18px 22px rgba(10,27,46,.16))}
.case-detail{margin-top:56px}
.case-detail h3{font-weight:500}
.case-detail p{color:#b7c3cf}
.spec-note p{margin:10px 0 0}
@media(max-width:650px){
  .application-product{padding:28px}
  .application-product img{height:260px}
  .case-detail{gap:24px}
}
.lang-zh .hero h1{font-size:clamp(38px,4vw,62px)}
.scene[src$=".svg"],.photo[src$=".svg"]{height:auto!important;object-fit:contain}