:root{--ink:#17211b;--paper:#f3f4ee;--white:#fff;--green:#1f5c40;--acid:#d7f15d;--mint:#dce8df;--line:#28362d;--muted:#687169;--max:1320px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"Microsoft YaHei",sans-serif;letter-spacing:0}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.shell{width:100%;max-width:none;margin:0;padding:0 clamp(20px,4vw,60px)}.notice{padding:9px 20px;background:var(--acid);border-bottom:1px solid var(--line);text-align:center;font-size:15px;font-weight:800}header{position:sticky;top:0;z-index:30;background:rgba(243,244,238,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav{min-height:72px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:22px}.nav-links,.nav-actions{display:flex;align-items:center;gap:22px;font-size:15px;font-weight:800}.nav-actions{justify-self:end}.brand{font-size:23px;font-weight:900;text-transform:uppercase}.brand small{display:block;text-align:center;font-size:15px}.btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;padding:0 20px;border:1px solid var(--ink);background:var(--ink);color:#fff;font-size:15px;font-weight:800;text-transform:uppercase;cursor:pointer}.btn.acid{background:var(--acid);color:var(--ink)}.btn.light{background:#fff;color:var(--ink)}.eyebrow{margin:0 0 16px;font-size:15px;font-weight:800;text-transform:uppercase}.title{margin:0;font-size:clamp(42px,6vw,82px);line-height:.95;font-weight:900}.section-title{margin:0;font-size:clamp(32px,4vw,56px);line-height:1;font-weight:900}.copy{color:var(--muted);font-size:16px;line-height:1.7}.breadcrumb{padding:18px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--muted)}.breadcrumb a{text-decoration:underline}.page-hero{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--line)}.page-hero-copy{padding:36px max(30px,calc((100vw - var(--max))/2 + 24px));display:flex;flex-direction:column;justify-content:center;gap:36px}.page-hero-copy .copy{max-width:590px}.hero-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:25px}.tag{padding:8px 10px;border:1px solid var(--line);font-size:15px;font-weight:800;text-transform:uppercase}.placeholder{min-height:330px;display:grid;place-items:center;padding:28px;text-align:center;border:1px dashed rgba(23,33,27,.6);background:repeating-linear-gradient(135deg,rgba(255,255,255,.45) 0 12px,rgba(23,33,27,.035) 12px 24px)}.placeholder strong{display:block;margin-bottom:8px}.placeholder span{display:block;max-width:450px;color:#586159;font-size:15px;line-height:1.55}.page-hero>.placeholder{border:0;border-left:1px solid var(--line);background-color:var(--mint)}section{border-bottom:1px solid var(--line)}.section-pad{padding:88px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:42px}.section-head .copy{max-width:570px;margin:0}.stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line)}.stat{padding:28px;border-right:1px solid var(--line)}.stat:last-child{border:0}.stat strong{display:block;font-size:25px}.stat span{font-size:15px;font-weight:800;text-transform:uppercase}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{border:1px solid var(--line);background:#fff}.card .placeholder{min-height:280px;border:0;border-bottom:1px solid var(--line)}.card-body{padding:22px}.card h3{margin:0 0 10px;font-size:22px}.card p{margin:0;color:var(--muted);font-size:15px;line-height:1.6}.card-link{display:flex;justify-content:space-between;align-items:center;margin-top:20px;font-size:15px;font-weight:800;text-transform:uppercase}.spec-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:60px}.sticky-intro{position:sticky;top:120px;align-self:start}.spec-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line)}.spec-table th,.spec-table td{padding:17px 18px;border-bottom:1px solid var(--line);text-align:left;font-size:15px}.spec-table th{width:36%;font-size:15px;text-transform:uppercase;background:#e6ebe5}.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:0}.note{margin-top:14px;color:var(--muted);font-size:15px;line-height:1.6}.steps{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line)}.step{min-height:220px;padding:26px;border-right:1px solid var(--line)}.step:last-child{border:0}.step b{display:block;margin-bottom:55px;font-size:15px}.step h3{margin:0 0 10px}.step p{color:var(--muted);font-size:15px;line-height:1.6}.dark{background:var(--green);color:#fff}.dark .copy{color:rgba(255,255,255,.72)}.gallery{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.gallery>.placeholder{min-height:560px}.gallery-side{display:grid;gap:18px}.gallery-side .placeholder{min-height:270px}.cta{padding:72px 0;background:var(--acid)}.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:35px}.cta h2{margin:0;font-size:clamp(34px,4.5vw,62px);line-height:1}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}label{display:block;font-size:15px;font-weight:800;text-transform:uppercase}input,select,textarea{width:100%;margin-top:8px;padding:14px 0;border:0;border-bottom:1px solid var(--ink);background:transparent;border-radius:0}textarea{min-height:105px;resize:vertical}.wide{grid-column:1/-1}.form-wrap{display:grid;grid-template-columns:.75fr 1.25fr;background:var(--mint)}.form-intro,.form-body{padding:80px 6vw}.form-intro{border-right:1px solid var(--line)}footer{padding:65px 0 24px;background:var(--ink);color:#fff}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:45px}.footer-brand{font-size:30px;font-weight:900}.footer-grid h4{margin:0 0 18px;font-size:15px;text-transform:uppercase}.footer-grid a,.footer-grid p{display:block;margin:0 0 9px;color:#aeb4af;font-size:15px;line-height:1.6}.copyright{display:flex;justify-content:space-between;margin-top:45px;padding-top:18px;border-top:1px solid #4b524d;color:#858b86;font-size:15px}

@media(max-width:950px){.nav{grid-template-columns:1fr auto}.nav-links{display:none}.page-hero,.form-wrap{grid-template-columns:1fr}.page-hero-copy{padding:32px 24px}.page-hero>.placeholder{min-height:470px;border:0;border-top:1px solid var(--line)}.spec-layout{grid-template-columns:1fr}.sticky-intro{position:static}.cards{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:1fr 1fr}.step:nth-child(2){border-right:0}.step:nth-child(-n+2){border-bottom:1px solid var(--line)}.gallery{grid-template-columns:1fr}.form-intro{border:0;border-bottom:1px solid var(--line)}.footer-grid{grid-template-columns:1fr 1fr}}

@media(max-width:620px){.shell{width:100%;padding:0 16px}.nav-actions .email{display:none}.brand{font-size:18px}.nav .btn{padding:0 12px}.title{font-size:48px}.section-pad{padding:68px 0}.section-head,.cta-inner{display:block}.section-head .copy,.cta .btn{margin-top:22px}.stats{grid-template-columns:1fr 1fr}.stat:nth-child(2){border-right:0}.stat:nth-child(-n+2){border-bottom:1px solid var(--line)}.cards{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.step{border-right:0;border-bottom:1px solid var(--line)}.step:last-child{border-bottom:0}.gallery>.placeholder{min-height:400px}.form-grid,.footer-grid{grid-template-columns:1fr}.form-intro,.form-body{padding:65px 24px}.copyright{display:block}}


.cert-cell{display:flex;flex-direction:column;align-items:center;gap:6px;padding:6px;background:#fff;border:1px solid var(--line);border-radius:4px}
.cert-cell img{width:100%;max-height:140px;object-fit:contain;background:#fff}
.cert-cell span{font-size:15px;font-weight:800;letter-spacing:.5px}
.language-switcher{display:flex;align-items:center;border:1px solid var(--line);background:var(--paper);white-space:nowrap}
.language-switcher a{display:grid;place-items:center;min-width:42px;min-height:38px;padding:0 8px;border-right:1px solid var(--line);font-size:15px;font-weight:800;text-transform:none}
.language-switcher a:last-child{border-right:0}
.language-switcher a.is-active{background:var(--ink);color:#fff}
html[dir="rtl"] body{text-align:right}
html[dir="rtl"] .nav-links,html[dir="rtl"] .nav-actions,html[dir="rtl"] .hero-meta,html[dir="rtl"] .actions{direction:rtl}
html[dir="rtl"] .spec-table th,html[dir="rtl"] .spec-table td{text-align:right}
html[dir="rtl"] .stat,html[dir="rtl"] .step,html[dir="rtl"] .fact{border-right:0;border-left:1px solid var(--line)}
html[dir="rtl"] .stat:last-child,html[dir="rtl"] .step:last-child,html[dir="rtl"] .fact:last-child{border-left:0}
html[dir="rtl"] .form-intro{border-right:0;border-left:1px solid var(--line)}
html[dir="rtl"] .page-hero>.placeholder{border-left:0;border-right:1px solid var(--line)}
.real-img{display:block;width:100%;height:auto;align-self:start;object-fit:cover}
.page-hero>.real-img.ar-21{aspect-ratio:1400/647}
.page-hero>.real-img.ar-22{aspect-ratio:4000/1856}
.page-hero>.real-img.ar-15{aspect-ratio:1400/902}
.page-hero>.real-img.ar-13{aspect-ratio:1167/798}


/* Keep product artwork fully visible; factory photos retain their crop. */
.product img,.card>img,.page-hero>img{background:#fff;object-position:center}

/* Mobile navigation */
.nav{position:relative}
.menu-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--line);background:transparent;color:var(--ink);font-size:22px;cursor:pointer}
@media(max-width:950px){
  .nav{grid-template-columns:auto 1fr auto}
  .menu-toggle{display:inline-flex}
  .brand{justify-self:center}
  .nav-links{position:absolute;top:100%;left:0;right:0;z-index:40;flex-direction:column;align-items:stretch;gap:0;padding:10px 20px 18px;background:var(--paper);border:1px solid var(--line);border-top:0}
  .nav-links.is-open{display:flex}
  .nav-links a{padding:14px 4px;border-bottom:1px solid rgba(40,54,45,.25)}
}
@media(max-width:1320px){.nav-actions .email{display:none}}
@media(max-width:720px){.language-switcher a{min-width:36px;padding:0 6px}.nav-actions>.btn{display:none}}

/* Consistent restrained rounding across interactive and framed UI. */
:root{--radius:6px}
.btn,.tag,.language-switcher,.menu-toggle,.placeholder,.card,.product,.cert-cell,.spec-table,.form-wrap,.faq-list details{border-radius:var(--radius)!important}
.card,.product,.cert-cell,.spec-table,.form-wrap,.placeholder{overflow:hidden}
.stats,.steps{border-radius:var(--radius);overflow:hidden}
.real-img{border-radius:var(--radius)}
input[type="file"],select,textarea{border-radius:4px}
@media(max-width:950px){.nav-links{border-radius:0 0 var(--radius) var(--radius)}}