:root{--paper:#f4f4f1;--white:#fff;--ink:#151515;--muted:#686864;--line:#d7d7d1;--red:#b7202e;--graphite:#242523}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"Noto Sans SC",sans-serif}a{color:inherit;text-decoration:none}img,video{display:block;max-width:100%}button,input,select,textarea{font:inherit}.topbar{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:28px;min-height:76px;padding:12px clamp(18px,4vw,60px);border-bottom:1px solid var(--line);background:rgba(244,244,241,.95);backdrop-filter:blur(14px)}.brand{display:flex;align-items:center;gap:12px}.brand-mark{display:grid;width:42px;height:42px;place-items:center;background:var(--ink);color:#fff;font-size:13px;font-weight:900;border-left:5px solid var(--red)}.brand strong,.brand small{display:block}.brand strong{font-size:14px}.brand small{margin-top:4px;color:var(--muted);font-size:9px}.nav-links{display:flex;justify-content:center;gap:clamp(14px,2vw,30px);font-size:13px;font-weight:700}.nav-links a:hover{color:var(--red)}.header-actions{display:flex;align-items:center;gap:10px}.lang-switch{display:flex;gap:0;padding:0;border:1px solid var(--line);background:transparent;cursor:pointer}.lang-switch span{padding:9px 10px;color:var(--muted);font-size:12px}.lang-switch .active{background:var(--ink);color:#fff}.nav-cta,.button{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:0 18px;border:1px solid var(--ink);border-radius:4px;font-size:13px;font-weight:800;cursor:pointer}.nav-cta{background:var(--ink);color:#fff}.hero{position:relative;display:grid;min-height:calc(100vh - 76px);isolation:isolate}.hero-image,.hero-shade{position:absolute;inset:0;width:100%;height:100%}.hero-image{z-index:-2;object-fit:cover}.hero-shade{z-index:-1;background:linear-gradient(90deg,rgba(5,5,5,.87) 0%,rgba(5,5,5,.57) 43%,rgba(5,5,5,.08) 80%)}.hero-content{align-self:center;width:min(720px,calc(100% - 36px));margin-left:clamp(18px,6vw,88px);padding:55px 0 150px;color:#fff}.eyebrow{margin:0 0 14px;color:#e0545e;font-size:11px;font-weight:900;text-transform:uppercase}.eyebrow.red{color:var(--red)}.hero h1{max-width:690px;margin:0;font-size:clamp(44px,6vw,82px);line-height:1.02}.hero-content>p:not(.eyebrow){max-width:620px;margin:24px 0 0;color:rgba(255,255,255,.84);font-size:18px;line-height:1.7}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.button.primary{border-color:var(--red);background:var(--red);color:#fff}.button.ghost{border-color:rgba(255,255,255,.65);background:rgba(0,0,0,.18);color:#fff}.hero-facts{position:absolute;right:0;bottom:0;left:0;display:grid;grid-template-columns:repeat(3,1fr);margin:0 clamp(18px,4vw,60px);background:rgba(18,18,18,.92);color:#fff}.hero-facts div{padding:22px 26px;border-right:1px solid rgba(255,255,255,.15)}.hero-facts strong,.hero-facts span{display:block}.hero-facts strong{font-size:19px}.hero-facts span{margin-top:6px;color:rgba(255,255,255,.65);font-size:12px}.section{width:min(1180px,calc(100% - 36px));margin:auto;padding:clamp(70px,9vw,118px) 0}.section-heading{display:grid;grid-template-columns:.75fr 1.25fr;gap:40px;align-items:start;margin-bottom:46px}.section-heading .eyebrow{grid-column:1}.section-heading h2{grid-column:2;margin:-28px 0 0;font-size:clamp(34px,4.5vw,58px);line-height:1.07}.section-heading.compact{display:block;max-width:720px}.section-heading.compact h2{margin:0}.section-heading.compact p:not(.eyebrow){color:var(--muted);line-height:1.7}.solution-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink)}.solution-grid article{padding:28px 28px 42px 0;border-right:1px solid var(--line)}.solution-grid article+article{padding-left:28px}.solution-grid span{color:var(--red);font-size:12px;font-weight:900}.solution-grid h3{margin:42px 0 14px;font-size:24px}.solution-grid p{margin:0;color:var(--muted);line-height:1.7}.system-band{display:grid;grid-template-columns:.82fr 1.18fr;background:var(--graphite);color:#fff}.system-copy{padding:clamp(55px,7vw,96px) clamp(24px,6vw,86px)}.system-copy h2{margin:0;font-size:clamp(34px,4.5vw,60px);line-height:1.05}.system-copy>p:not(.eyebrow){color:rgba(255,255,255,.66);line-height:1.8}.joint-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}.joint-list span{padding:9px 12px;border:1px solid rgba(255,255,255,.24);font-size:12px}.module-gallery{display:grid;grid-template-columns:repeat(2,1fr)}.module-gallery figure{position:relative;min-height:300px;margin:0;overflow:hidden}.module-gallery img{width:100%;height:100%;object-fit:cover}.module-gallery figcaption{position:absolute;right:12px;bottom:12px;padding:8px 10px;background:rgba(0,0,0,.75);font-size:12px}.engineering{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(36px,6vw,80px);align-items:center}.engineering-media{min-height:580px;overflow:hidden}.engineering-media img{width:100%;height:100%;object-fit:cover}.engineering-copy h2{margin:0;font-size:clamp(34px,4.2vw,56px);line-height:1.06}.option-list{margin-top:32px;border-top:1px solid var(--ink)}.option-list div{display:grid;grid-template-columns:130px 1fr;gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}.option-list span{color:var(--muted);line-height:1.5}.spec-section{background:#fff}.spec-table{display:grid;grid-template-columns:repeat(2,1fr);border-top:1px solid var(--ink)}.spec-table div{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:20px 0;border-bottom:1px solid var(--line)}.spec-table div:nth-child(odd){padding-right:30px}.spec-table div:nth-child(even){padding-left:30px;border-left:1px solid var(--line)}.spec-table span{color:var(--muted)}.downloads{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px}.download-list{border-top:1px solid var(--ink)}.download-list div{display:grid;grid-template-columns:52px 1fr auto;gap:18px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line)}.download-list span{color:var(--red);font-size:11px;font-weight:900}.download-list small{color:var(--muted)}.inquiry{display:grid;grid-template-columns:.82fr 1.18fr;background:var(--graphite);color:#fff}.inquiry-intro,.quote-form{padding:clamp(48px,7vw,88px) clamp(22px,5vw,70px)}.inquiry-intro{border-right:1px solid rgba(255,255,255,.14)}.inquiry h2{margin:0;font-size:clamp(35px,4.5vw,58px);line-height:1.06}.inquiry-intro>p:not(.eyebrow){color:rgba(255,255,255,.64);line-height:1.7}.contact-list{display:grid;gap:16px;margin-top:36px}.contact-list>a,.contact-list>div:not(.wechat){display:grid;grid-template-columns:80px 1fr;gap:15px}.contact-list span{color:rgba(255,255,255,.55);font-size:12px}.wechat{display:flex;align-items:center;gap:16px;margin-top:12px}.wechat img{width:112px;height:112px;object-fit:cover;background:#fff}.quote-form{background:#30312f}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.quote-form label{display:grid;gap:8px;margin-bottom:20px}.quote-form label>span{font-size:12px;font-weight:800}.quote-form input,.quote-form select,.quote-form textarea{width:100%;border:1px solid #5d5e59;border-radius:3px;background:#242523;color:#fff;padding:13px}.quote-form input,.quote-form select{height:46px}.quote-form textarea{resize:vertical}.file-field{padding:14px;border:1px dashed #6e6f69}.file-field input{height:auto;padding:4px;border:0}.file-field small{color:rgba(255,255,255,.5)}.button.submit{width:100%;border:0}.form-status{min-height:18px;margin:12px 0 0;font-size:13px}.footer{display:flex;justify-content:space-between;gap:30px;padding:34px clamp(18px,4vw,60px);background:#111;color:#aaa;font-size:12px}.footer strong{color:#fff;font-size:16px}.footer p{margin:6px 0 0}
@media(max-width:980px){.topbar{grid-template-columns:1fr auto}.nav-links{display:none}.nav-cta{display:none}.section-heading,.system-band,.engineering,.downloads,.inquiry{grid-template-columns:1fr}.section-heading h2,.section-heading .eyebrow{grid-column:1}.section-heading h2{margin:0}.system-copy{order:1}.module-gallery{order:2}.engineering-media{min-height:420px}.inquiry-intro{border-right:0;border-bottom:1px solid rgba(255,255,255,.14)}}
@media(max-width:640px){.topbar{min-height:66px;padding:10px 14px}.brand small{display:none}.brand-mark{width:38px;height:38px}.hero{min-height:760px}.hero-shade{background:linear-gradient(180deg,rgba(4,4,4,.3),rgba(4,4,4,.88) 65%)}.hero-content{align-self:end;margin:0 18px 185px;padding:0}.hero h1{font-size:42px}.hero-content>p:not(.eyebrow){font-size:15px}.hero-facts{grid-template-columns:1fr;margin:0}.hero-facts div{padding:12px 18px}.hero-facts span{display:inline;margin-left:10px}.solution-grid,.spec-table,.form-grid{grid-template-columns:1fr}.solution-grid article,.solution-grid article+article{padding:24px 0;border-right:0;border-bottom:1px solid var(--line)}.solution-grid h3{margin:20px 0 10px}.module-gallery figure{min-height:190px}.engineering-media{min-height:320px}.option-list div,.spec-table div{grid-template-columns:1fr}.spec-table div:nth-child(odd),.spec-table div:nth-child(even){padding:16px 0;border-left:0}.download-list div{grid-template-columns:45px 1fr}.download-list small{grid-column:2}.inquiry-intro,.quote-form{padding:48px 18px}.contact-list>a,.contact-list>div:not(.wechat){grid-template-columns:1fr}.footer{display:grid}}

.solution-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;border-top:0}.solution-card{display:flex;min-width:0;min-height:250px;flex-direction:column;padding:24px;border:1px solid var(--line);border-radius:6px;background:var(--white);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}.solution-card:hover,.solution-card:focus-visible{border-color:var(--red);transform:translateY(-3px);box-shadow:0 10px 24px rgba(21,21,21,.08);outline:0}.solution-card-top{display:flex;align-items:center;justify-content:space-between}.solution-card-top>span:first-child,.solution-arrow{color:var(--red);font-size:12px;font-weight:900}.solution-arrow{font-size:22px;line-height:1}.solution-card h3{margin:42px 0 12px;font-size:20px;line-height:1.2;overflow-wrap:anywhere}.solution-card p{margin:auto 0 0;color:var(--muted);font-size:14px;line-height:1.6}
@media(max-width:1100px){.topbar{grid-template-columns:1fr auto}.nav-links,.nav-cta{display:none}.solution-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.solution-card{min-height:220px}}
@media(max-width:640px){.solution-grid{grid-template-columns:1fr;gap:10px}.solution-card{min-height:0;padding:20px}.solution-card h3{margin:24px 0 10px;font-size:19px}.solution-card p{margin:0}.solution-card:hover{transform:none}}

.nav-links .designer-link{color:var(--red);font-weight:900}.nav-links .designer-link:hover{color:#8f1521}.button.designer-cta{border-color:#d82b3a;background:#c61f2d;box-shadow:0 0 0 4px rgba(198,31,45,.2),0 10px 28px rgba(0,0,0,.22)}.button.designer-cta:hover,.button.designer-cta:focus-visible{background:#df3040;transform:translateY(-2px);outline:0}.button.designer-cta:after{margin-left:10px;content:"→";font-size:18px;line-height:1}@media(max-width:640px){.button.designer-cta{width:100%;box-shadow:0 0 0 3px rgba(198,31,45,.2),0 8px 20px rgba(0,0,0,.2)}}