/* 延续工业品牌，使用整幅分区和开放排版；不把参考图片或分类包装成现货。 */
:root{--bg:#fff;--ink:#18282e;--muted:#53646c;--line:#d1dadd;--accent:#f7931e;--blue:#0f4c81;--max:1180px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 Arial,"Helvetica Neue",sans-serif;letter-spacing:0}
a{color:inherit;text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:5px}
button,input,textarea,select{font:inherit;letter-spacing:0}
button,a,input,textarea,select,summary{-webkit-tap-highlight-color:transparent}
:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
img{display:block;max-width:100%}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{line-height:1.2;letter-spacing:0;overflow-wrap:break-word}
h2{font-size:36px;font-weight:600;margin-bottom:20px}
h3{font-size:25px;font-weight:600;margin-bottom:16px}
p{color:var(--muted);margin-bottom:20px}
.container{width:min(var(--max),calc(100% - 64px));margin-inline:auto}
.skip-link{position:fixed;top:10px;left:20px;padding:12px;background:var(--accent);color:#111;z-index:100;transform:translateY(-160%)}
.skip-link:focus{transform:none}
.site-header,.site-footer,.hero,.alternate,.quote-band{--ink:#f3f6f5;--muted:#c2ced0;--line:#415054;color:var(--ink)}
.site-header{position:sticky;top:0;z-index:30;background:#111719;border-bottom:1px solid var(--line)}
.nav-wrap{width:min(1440px,calc(100% - 64px));min-height:88px;margin:auto;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;flex:none}
.brand-logo{width:230px;height:60px;object-fit:contain;flex:none}
.site-footer .brand-logo{width:224px;height:auto}
.nav-menu{display:flex;align-items:center;gap:22px;margin-left:auto;font-size:14px}
.nav-menu a{padding:30px 0;border-bottom:2px solid transparent;white-space:nowrap}
.nav-menu a[aria-current="page"]{border-color:var(--accent)}
.lang-switch{display:flex;align-items:center;gap:3px;font-size:12px;color:#c2ced0;flex:none}
.lang-switch a{padding:10px 5px}
.lang-switch [aria-current]{color:#ffb55c;font-weight:bold}
.nav-toggle{display:none;width:44px;height:44px;flex:none;border:1px solid var(--line);border-radius:3px;background:transparent;cursor:pointer}
.nav-toggle span{display:block;width:20px;height:2px;margin:5px auto;background:#f3f6f5}
.hero{position:relative;isolation:isolate;min-height:610px;display:flex;align-items:center;background:#1c2a2e;overflow:hidden}
.hero-image{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 36%;z-index:-3}
.hero-shade{position:absolute;inset:0;z-index:-2;background:linear-gradient(90deg,rgba(9,17,21,.97),rgba(9,17,21,.88) 38%,rgba(9,17,21,.20) 78%)}
.hero-content{padding-block:46px 86px}
.eyebrow{color:var(--blue);font-size:12px;font-weight:bold;line-height:1.5;text-transform:uppercase;margin-bottom:20px}
.hero .eyebrow,.alternate .eyebrow,.quote-band .eyebrow{color:#ffb55c}
.hero h1{font-size:60px;line-height:1.08;font-weight:600;margin:0 0 22px;max-width:680px}
.hero h1 span{display:block;font-size:25px;color:#ffb55c;margin-top:10px}
.hero-subtitle{font-size:30px;line-height:1.3;max-width:650px;color:#fff;margin-bottom:20px;font-weight:600}
.hero-intro{max-width:610px;color:#d1dbdd;font-size:17px}
.button-row{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0 20px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:22px;min-height:48px;padding:12px 20px;border:1px solid transparent;border-radius:3px;font-size:14px;font-weight:700;line-height:1.5;cursor:pointer;text-align:center;overflow-wrap:break-word}
.btn-primary{background:var(--accent);color:#142025}
.btn-primary:hover{background:#ffb557;color:#142025;text-decoration:none}
.btn-primary:disabled{opacity:.65;cursor:wait}
.btn-outline{background:transparent;border-color:#52686f;color:var(--ink)}
.hero .btn-outline{background:#101d25b8;border-color:#9aaeb3;color:#fff}
.btn-outline:hover{border-color:var(--accent);text-decoration:none}
.hero-contact{display:inline-block;color:#f2f5f3;font-size:14px;text-decoration:underline;text-underline-offset:5px}
.image-disclosure{position:absolute;bottom:0;left:0;width:100%;margin:0;padding:9px 32px;font-size:10px;text-align:right;background:#0f1a1eef;color:#c6d2d5;line-height:1.5}
.image-disclosure span{display:block}
.image-disclosure a{text-decoration:underline;text-underline-offset:3px}
.band{padding:76px 0;border-bottom:1px solid var(--line)}
#equipment{padding-top:40px}
.section-head{max-width:820px;margin-bottom:34px}
.section-head .eyebrow{margin-bottom:14px}
.alternate{background:#1b282d}
.availability-note{border-left:3px solid var(--accent);padding:10px 0 10px 18px;font-size:14px;max-width:920px;color:var(--muted);margin:30px 0 0}
.equipment-list{border-top:1px solid #78919c}
.equipment-row{display:grid;grid-template-columns:60px 1.1fr 1fr;gap:35px;padding:36px 0;border-bottom:1px solid var(--line)}
.equipment-row>div{min-width:0}
.equipment-index{font-size:16px;font-weight:700;color:var(--blue)}
.equipment-row h3{max-width:430px}
.equipment-row p{font-size:15px;margin-bottom:0}
.check-list{padding-left:20px;margin:0 0 22px;color:var(--muted);font-size:15px}
.check-list li{margin-bottom:10px;padding-left:4px}
.text-link{display:inline-block;font-size:14px;font-weight:600;color:var(--blue);text-decoration:underline;text-underline-offset:5px;padding:8px 0}
.alternate .text-link,.quote-band .text-link{color:#ffb55c}
.source-link{color:var(--muted);font-size:13px;text-decoration:underline;text-underline-offset:4px}
.process-grid{list-style:none;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:30px;margin:0 0 26px}
.process-item{padding-top:24px;border-top:1px solid #7a8d95;min-width:0}
.step-number{display:block;color:var(--accent);font-size:14px;margin-bottom:26px}
.process-item h3{font-size:21px;line-height:1.35}
.process-item p{font-size:14px;margin:0}
.quote-band{background:#263b43}
.quote-grid{display:grid;grid-template-columns:1fr auto;align-items:center;gap:60px}
.quote-grid>div{max-width:780px;min-width:0}
.quote-grid p:last-child{margin-bottom:0}
.about-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:80px}
.about-grid>div{min-width:0}
.about-grid .eyebrow{margin-bottom:15px}
.about-grid>div p:last-child{margin-bottom:0}
.experience-line{color:var(--blue);font-size:22px;font-weight:600;line-height:1.45}
.contact-band{background:#f1f4f4}
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:72px}
.contact-grid>div{min-width:0}
.contact-lines{margin:28px 0}
.contact-lines p{display:grid;gap:4px;margin-bottom:18px}
.contact-lines span{font-size:12px;color:var(--muted)}
.contact-lines a{color:var(--ink);overflow-wrap:anywhere;font-size:18px}
.contact-lines .contact-number{font-size:25px;font-weight:600;line-height:1.4}
.field-hint{font-size:13px;color:var(--muted);line-height:1.6}
.contact-form{min-width:0}
.contact-form label{display:grid;gap:8px;font-size:13px;color:var(--ink);font-weight:600;margin-bottom:18px}
.form-row{display:grid;grid-template-columns:1fr 1fr;align-items:end;gap:18px}
.contact-form input,.contact-form textarea,.contact-form select{width:100%;min-width:0;padding:12px;color:var(--ink);border:1px solid #86989f;border-radius:3px;background:#fff;line-height:1.5;resize:vertical}
.contact-form select{height:50px;text-overflow:ellipsis;overflow:hidden}
.contact-form textarea{min-height:150px}
.contact-form .honeypot{display:none}
.contact-form .field-hint{margin-top:-6px;margin-bottom:20px}
.privacy-note{font-size:12px;line-height:1.6;margin-bottom:0}
.privacy-note a{text-decoration:underline}
.form-message{font-size:14px;overflow-wrap:anywhere;margin:15px 0;color:#24543d}
.form-message:empty{display:none}
.contact-form .btn{margin-bottom:16px}
.page-hero{padding:62px 0 52px;background:#edf2f3;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:42px;max-width:980px;margin-bottom:20px}
.page-hero p:last-child{max-width:880px;margin-bottom:0}
.page-hero p:empty{display:none}
.reference-list{border-top:1px solid var(--line);margin-bottom:24px}
.reference-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}
.reference-row strong{overflow-wrap:anywhere;font-size:19px}
.faq-list{max-width:900px}
details{border-bottom:1px solid var(--line);padding:22px 0}
details:first-child{border-top:1px solid var(--line)}
summary{font-size:18px;line-height:1.5;font-weight:600;cursor:pointer;padding-right:15px}
details p{max-width:790px;margin:20px 0 0}
.faq-list>.btn{margin-top:32px}
.prose{max-width:850px}
.site-footer{padding:52px 0 20px;background:#101719}
.footer-grid{display:grid;grid-template-columns:1.1fr 1fr .8fr;gap:55px}
.site-footer .brand{margin-bottom:18px}
.site-footer p{font-size:13px;max-width:330px}
.site-footer .contact-lines{margin:0}
.site-footer .contact-lines a{font-size:16px}
.footer-links{display:grid;align-content:start;gap:10px;font-size:13px;color:#c2ced0}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:35px;padding-top:18px;color:#a4b5ba;font-size:11px}
.not-found{padding-block:100px}
.not-found h1{font-size:72px}
@media(min-width:1600px){.hero{min-height:650px}}
@media(max-height:760px) and (min-width:701px){.hero{min-height:0}.hero-content{padding-block:28px 62px}.hero h1{font-size:48px;margin-bottom:16px}.hero h1 span{font-size:22px}.hero-subtitle{font-size:26px;margin-bottom:14px}.hero-intro{font-size:16px;margin-bottom:14px}.hero .eyebrow{margin-bottom:14px}.hero .button-row{margin:20px 0 16px}}
@media(max-width:1150px){.nav-wrap{gap:18px;min-height:78px}.nav-toggle{display:block;margin-left:auto}.nav-menu{display:none;position:absolute;left:0;right:0;top:100%;background:#142126;border-bottom:1px solid var(--line);padding:12px 32px;margin:0}.nav-menu.is-open{display:grid;gap:0}.nav-menu a{padding:12px 0}.contact-grid,.about-grid{gap:42px}.process-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}}
@media(max-width:850px){.equipment-row{grid-template-columns:40px 1fr;gap:22px}.equipment-row>div:last-child{grid-column:2}.equipment-row h3{max-width:none}.quote-grid{gap:30px}.footer-grid{gap:30px}}
@media(max-width:700px){.container,.nav-wrap{width:calc(100% - 40px)}.nav-wrap{min-height:74px;gap:12px}.brand-logo{width:164px;height:auto}.nav-menu{padding-inline:20px}.lang-switch{gap:0}.lang-switch a{padding-inline:4px}.band{padding:48px 0}h2{font-size:28px}h3{font-size:23px}.eyebrow{font-size:11px;margin-bottom:16px}.hero{min-height:0;align-items:flex-start}.hero-content{padding-block:30px 84px}.hero h1{font-size:40px;line-height:1.1;margin-bottom:18px}.hero h1 span{font-size:22px;margin-top:8px}.hero-subtitle{font-size:25px;max-width:440px;margin-bottom:16px}.hero-intro{font-size:15px;max-width:440px}.hero-image{object-position:64% 32%}.hero-shade{background:rgba(10,21,26,.86)}.hero .button-row{display:grid;justify-items:stretch;max-width:360px;gap:10px;margin-top:22px}.hero-contact{font-size:13px}.image-disclosure{text-align:left;font-size:10px;padding:8px 20px}.image-disclosure span{margin-bottom:2px}#equipment{padding-top:30px}.equipment-row{grid-template-columns:28px 1fr;gap:16px;padding:28px 0}.equipment-row p{font-size:15px}.process-grid{grid-template-columns:1fr;gap:28px}.process-item{padding-top:18px}.step-number{margin-bottom:12px}.process-item p{font-size:15px}.quote-grid,.about-grid,.contact-grid{grid-template-columns:1fr;gap:28px}.quote-grid>.btn{justify-self:start}.about-grid h2{margin-bottom:0}.contact-grid{gap:34px}.form-row{grid-template-columns:1fr;gap:0}.contact-form .btn{width:100%}.contact-lines .contact-number{font-size:23px}.contact-lines a{font-size:17px}.page-hero{padding:38px 0}.page-hero h1{font-size:32px}.reference-row{grid-template-columns:1fr;gap:12px}.footer-grid{grid-template-columns:1fr;gap:28px}.footer-links{grid-template-columns:1fr 1fr;gap:14px}.footer-bottom{display:grid;gap:8px}.site-footer{padding-top:40px}summary{font-size:17px}}
@media(max-width:360px){.container,.nav-wrap{width:calc(100% - 32px)}.nav-wrap{gap:10px}.site-header .brand-logo{width:138px}.nav-toggle{width:40px;height:40px}.hero h1{font-size:36px}.hero-subtitle{font-size:23px}.equipment-row{grid-template-columns:1fr;gap:8px}.equipment-row>div:last-child{grid-column:1}.equipment-index{font-size:13px}.contact-lines .contact-number{font-size:22px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media(max-width:700px){.hero-content{padding-bottom:106px}}
@media(max-width:360px){.hero-content{padding-top:26px}.hero h1{margin-bottom:14px}.hero-subtitle{font-size:22px}.hero .button-row{margin:16px 0 14px;gap:8px}.hero .btn{min-height:44px;padding:10px 16px}}