/* —— 组件与版式（使用 tokens 中的变量）—— */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;font-family:var(--font-body);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:700;letter-spacing:.01em;text-transform:none}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:min(1140px,92vw);margin:0 auto}
.muted{color:var(--muted)}
.pill,.line-badge,.product-detail__pill,.stat-label,.footer-grid h4,.nav-all{
  font-family:var(--font-tagline);font-style:italic;font-weight:600;letter-spacing:.05em;text-transform:uppercase
}
.site-header{
  position:sticky;top:0;z-index:100;background:var(--header-bg);color:var(--header-color);
  box-shadow:0 1px 0 var(--header-border,rgba(255,255,255,.1));transition:box-shadow .35s ease,background .35s ease;
}
.site-header::before{content:'';display:block;height:4px;background:var(--brand-bar)}
.site-header::after{content:'';display:block;height:3px;background:var(--header-line-color,color-mix(in srgb,var(--color-brown) 85%,transparent))}
.site-header.is-scrolled{box-shadow:0 10px 32px rgba(0,0,0,.45),0 1px 0 var(--header-border,rgba(255,255,255,.1))}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 0}
.site-header .nav>a:not(.btn),.site-header .nav-dropdown>span,.site-header .nav-dropdown__link,.site-header .nav-dropdown__trigger{
  position:relative;display:inline-flex;align-items:center;gap:.35rem;padding:.15rem 0;
}
.site-header .nav>a:not(.btn)::after,.site-header .nav-dropdown>span::after,.site-header .nav-dropdown__link::after,.site-header .nav-dropdown__trigger::after{
  content:'';position:absolute;left:0;right:0;bottom:-.3rem;height:2px;
  border-radius:999px;
  background:var(--header-link-hover,var(--color-brown));
  transform:scaleX(0);transform-origin:left;
  opacity:0;transition:transform .25s cubic-bezier(.22,1,.36,1),opacity .25s ease,background .2s ease;
}
.site-header .nav>a:not(.btn):hover,.site-header .nav-dropdown>span:hover,.site-header .nav-dropdown__link:hover,.site-header .nav-dropdown__trigger:hover{color:var(--header-link-hover,var(--color-brown));text-decoration:none}
.site-header .nav>a:not(.btn):hover::after,.site-header .nav-dropdown>span:hover::after,.site-header .nav-dropdown__link:hover::after,.site-header .nav-dropdown__trigger:hover::after{
  transform:scaleX(1);opacity:1;
}
.site-header .nav>a:not(.btn).active,.site-header .nav-dropdown__link.active{color:var(--header-link-hover,var(--color-brown));text-decoration:none}
.site-header .nav>a:not(.btn).active::after,.site-header .nav-dropdown__link.active::after{
  transform:scaleX(1);opacity:1;
}
body[data-product-line] .site-header .nav>a:not(.btn):hover,body[data-product-line] .site-header .nav-dropdown__link:hover,body[data-product-line] .site-header .nav-dropdown__trigger:hover{color:var(--header-link-hover)}
body[data-product-line] .site-header .nav>a:not(.btn).active,body[data-product-line] .site-header .nav-dropdown__link.active{color:var(--header-link-hover)}
.site-header .nav .btn{
  position:relative;
  background:#151515;
  color:#F5F5F5;
  border:1px solid var(--header-link-hover,var(--color-brown));
  box-shadow:
    0 0 0 1px rgba(0,0,0,.9),
    0 6px 14px rgba(0,0,0,.7);
  border-radius:3px;
  text-decoration:none;
}
.site-header .nav .btn::before{
  content:'';position:absolute;left:1px;right:1px;top:1px;height:32%;
  border-radius:inherit;
  background:linear-gradient(180deg,rgba(255,255,255,.18) 0%,rgba(255,255,255,0) 100%);
  opacity:.7;pointer-events:none;
}
.site-header .nav .btn:hover,.site-header .nav .btn.active{
  background:color-mix(in srgb,var(--header-link-hover,var(--color-brown)) 22%,#111111);
  color:var(--color-white);
  border-color:var(--header-link-hover,var(--color-brown));
  box-shadow:
    0 0 0 1px rgba(0,0,0,.95),
    0 8px 18px color-mix(in srgb,var(--header-link-hover,var(--color-brown)) 35%,transparent);
  filter:none;text-decoration:none;
}
body[data-product-line] .site-header .nav .btn:hover,body[data-product-line] .site-header .nav .btn.active{background:var(--header-link-hover);color:var(--btn-on-accent,#fff)}
body[data-product-line="nitrogen"] .site-header .nav .btn:hover,body[data-product-line="nitrogen"] .site-header .nav .btn.active{color:var(--color-black)}
.logo{display:flex;align-items:center;flex-shrink:0;overflow:visible;color:inherit;text-decoration:none;line-height:0}
.logo:hover{text-decoration:none}
.logo-img{display:block;height:64px;width:auto;max-width:min(380px,78vw);object-fit:contain;object-position:left center;transition:opacity .25s ease,transform .25s ease}
.logo:hover .logo-img{opacity:.88;transform:scale(1.03)}
.nav-toggle{display:none;background:transparent;border:1px solid currentColor;color:inherit;padding:.35rem .6rem;cursor:pointer}
.nav{display:flex;align-items:center;gap:1.1rem;flex-wrap:wrap}
.nav>a:not(.btn),.nav-dropdown>span,.nav-dropdown__link,.nav-dropdown__trigger{color:inherit;font-weight:600;font-size:.92rem}
.nav-dropdown__link{text-decoration:none}
.nav-dropdown--products .nav-dropdown__head{display:inline-flex;align-items:center;gap:.2rem}
.nav .btn{color:var(--btn-on-accent,#fff)}
.nav .btn:hover{color:var(--btn-on-accent,#fff);text-decoration:none}
.nav-dropdown{position:relative;cursor:pointer}
.nav-dropdown--products{position:static}
.nav-dropdown-panel{display:flex;flex-direction:column;gap:0;position:absolute;top:100%;left:0;min-width:240px;max-height:min(70vh,520px);overflow:auto;background:var(--surface);color:var(--text);border:1px solid rgba(0,0,0,.1);padding:.5rem;box-shadow:0 12px 30px rgba(0,0,0,.12);z-index:200;opacity:0;visibility:hidden;transform:translateY(8px);pointer-events:none;transition:opacity .22s ease,transform .22s ease,visibility .22s}
.nav-dropdown:hover .nav-dropdown-panel,.nav-dropdown:focus-within .nav-dropdown-panel{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.nav-dropdown-panel--products{
  position:fixed;left:0;right:0;width:100%;max-width:100vw;min-width:0;
  top:var(--products-panel-top,4.5rem);
  padding:0;
  border-top:1px solid rgba(255,255,255,.06);
  border-bottom:1px solid rgba(0,0,0,.9);
  --nav-panel-bg:#050505;
  --nav-panel-groove-dark:rgba(0,0,0,.9);
  --nav-panel-groove-light:rgba(255,255,255,.06);
  --nav-panel-text:#F5F5F5;
  --nav-panel-item:#D8D8D8;
  --nav-panel-muted:#A0A4A8;
  background-color:var(--nav-panel-bg);
  background-image:none;
  box-shadow:0 14px 32px rgba(0,0,0,.7);
  transform:none;
  transition:opacity .2s ease,visibility .2s ease,box-shadow .2s ease;
}
.nav-dropdown-panel--products::before{
  content:'';position:absolute;left:0;right:0;top:-18px;height:18px;background:transparent;z-index:2;
}
.nav-dropdown--products.is-open .nav-dropdown-panel--products{
  opacity:1;visibility:visible;pointer-events:auto;
}
@media(min-width:900px){
  .nav-dropdown-panel--products{
    max-height:none;
    overflow:visible;
  }
  .nav-dropdown--products:hover .nav-dropdown-panel--products,
  .nav-dropdown--products:focus-within .nav-dropdown-panel--products{
    opacity:1;visibility:visible;pointer-events:auto;
  }
  .nav-dropdown__caret{display:inline-block}
}
.nav-dropdown__caret{
  display:none;flex-shrink:0;width:0;height:0;
  border-left:.32rem solid transparent;border-right:.32rem solid transparent;
  border-top:.38rem solid currentColor;align-self:center;
}
.nav-products-shell{padding:0;width:100%;position:relative;z-index:1}
.nav-panel-footer{
  min-height:1.25rem;
  padding:1rem clamp(1rem,4vw,2rem) 1.25rem;
  background:linear-gradient(180deg,#0a0a0a 0%,#050505 100%);
  border-top:1px solid var(--nav-panel-groove-light,rgba(255,255,255,.06));
}
.nav-mega-board{width:100%;background:transparent;border:none;overflow:hidden;box-shadow:none}
.nav-dropdown-panel--products .nav-line{
  --line-accent:var(--accent);
  padding:.6rem clamp(.75rem,2.5vw,1.2rem);
  border:none;
  background:#080808;
  box-shadow:none;
  transition:background .18s ease;
}
.nav-dropdown-panel--products .nav-line:hover{background:#0d0d0d}
.nav-dropdown-panel--products .nav-line.nav-line--light-accent{--line-accent:#F0F0F0}
.nav-dropdown-panel--products .nav-line.nav-line--light-accent .nav-line__title{color:#F0F0F0}
.nav-dropdown-panel--products .nav-line.nav-line--light-accent .nav-line__title:hover{filter:brightness(1.05)}
.nav-dropdown-panel--products .nav-line.nav-line--light-accent .nav-line__title::before{
  background:linear-gradient(180deg,#1a1a1a 0%,#000000 100%);
  border:1px solid rgba(58,58,58,.95);
  box-shadow:0 1px 2px rgba(0,0,0,.5);
}
.nav-dropdown-panel--products .nav-all{
  position:relative;display:flex;align-items:center;
  min-height:2.65rem;padding:.75rem clamp(1rem,4vw,2rem) .7rem;margin:0;
  font-weight:700;font-size:.94rem;color:var(--nav-panel-text);border:none;background:transparent;
  box-sizing:border-box;
}
.nav-dropdown-panel--products .nav-all::after{
  content:'';position:absolute;left:clamp(1rem,4vw,2rem);right:clamp(1rem,4vw,2rem);bottom:0;height:3px;
  background:linear-gradient(180deg,var(--nav-panel-groove-dark) 0%,rgba(0,0,0,.52) 52%,var(--nav-panel-groove-light) 100%);
  box-shadow:0 1px 0 rgba(0,0,0,.45);pointer-events:none;
}
.nav-dropdown-panel--products .nav-all:hover{text-decoration:none;color:#fff;background:rgba(255,255,255,.06)}
.nav-mega{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border:none;background:transparent}
@media(min-width:900px){.nav-mega{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(min-width:1200px){.nav-mega{grid-template-columns:repeat(3,minmax(0,1fr))}}
.nav-mega--pair{display:grid;grid-template-columns:1fr;gap:0;border:none;background:transparent}
@media(min-width:900px){.nav-mega--pair{grid-template-columns:repeat(2,minmax(0,1fr))}}
.nav-mega--pair .nav-line--fuel-gas .nav-line__cats{
  grid-template-columns:1fr;
  row-gap:.05rem;
  column-gap:0;
  padding-bottom:.1rem;
}
.nav-mega--pair .nav-line--cylinder-stands .nav-line__cats{grid-template-columns:1fr}
@media(min-width:900px){
  .nav-mega--pair .nav-line--cylinder-stands .nav-line__cats{grid-template-columns:repeat(2,minmax(0,1fr))}
}
.nav-dropdown-panel--products .nav-line--full{
  position:relative;border:none;background:transparent;
  padding:.75rem clamp(1rem,4vw,2rem) .7rem;margin-top:0;
}
.nav-dropdown-panel--products .nav-line--full::before{
  content:'';position:absolute;left:clamp(.75rem,3vw,1.25rem);right:clamp(.75rem,3vw,1.25rem);top:0;height:3px;
  background:linear-gradient(180deg,var(--nav-panel-groove-dark) 0%,rgba(0,0,0,.52) 52%,var(--nav-panel-groove-light) 100%);
  box-shadow:0 1px 0 rgba(0,0,0,.45);pointer-events:none;
}
@media(min-width:900px){
  .nav-line--full{display:grid;grid-template-columns:minmax(12rem,18rem) 1fr;gap:.65rem 1rem;align-items:start}
  .nav-line--full .nav-line__title{margin-bottom:0}
  .nav-dropdown-panel--products .nav-line--full{align-items:center}
  .nav-dropdown-panel--products .nav-line--full .nav-line__head .nav-line__title{margin:0}
}
.nav-line__title{display:flex;align-items:center;gap:.55rem;font-weight:700;font-size:.92rem;line-height:1.25;padding:.35rem 0 .4rem;margin:0 0 .35rem;border:none;color:var(--line-accent);background:transparent;text-decoration:none;transition:gap .2s ease,filter .2s ease}
.nav-line__title::before{
  content:'';
  flex-shrink:0;
  width:1.15rem;
  height:1.15rem;
  border-radius:1px;
  background:linear-gradient(180deg,color-mix(in srgb,var(--line-accent) 12%,#3a3a3a) 0%,var(--line-accent) 100%);
  border:1px solid rgba(58,58,58,.95);
  box-shadow:0 1px 2px rgba(0,0,0,.5);
}
.nav-line__title:hover{filter:brightness(1);gap:.65rem;text-decoration:none}
.nav-dropdown-panel--products .nav-line__title{position:relative;padding-bottom:.55rem}
.nav-dropdown-panel--products .nav-line__title::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:2px;
  background:color-mix(in srgb,var(--line-accent) 60%,rgba(255,255,255,.28));
  border-radius:1px;
}
.nav-dropdown-panel--products .nav-line--full .nav-line__title{padding-bottom:.4rem}
.nav-dropdown-panel--products .nav-line--full .nav-line__title::after{display:none;content:none}
.nav-line__cats{list-style:none;margin:0;padding:0 0 0 .15rem;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:.65rem;row-gap:.12rem}
.nav-line__cats a{
  position:relative;
  display:block;
  font-size:.8rem;
  font-weight:400;
  line-height:1.35;
  color:var(--nav-panel-item,#D8D8D8);
  padding:.18rem 0 .18rem .95rem;
  text-decoration:none;
  transition:color .2s ease,padding-left .2s ease,transform .2s ease;
}
.nav-line__cats a::before{
  content:'';
  position:absolute;
  left:.18rem;
  top:50%;
  transform:translateY(-50%);
  width:0;
  height:0;
  border-top:4px solid transparent;
  border-bottom:4px solid transparent;
  border-left:5px solid var(--nav-panel-item,#D8D8D8);
}
.nav-line__cats a[data-cat-accent]{
  display:flex;
  align-items:center;
  gap:.4rem;
  padding:.2rem 0 .2rem .95rem;
}
.nav-line__cats a[data-cat-accent]::before{
  content:'';
  position:static;
  flex-shrink:0;
  width:.875rem;
  height:.875rem;
  transform:none;
  border:1px solid rgba(58,58,58,.95);
  border-radius:1px;
  background:linear-gradient(180deg,color-mix(in srgb,var(--cat-accent) 12%,#3a3a3a) 0%,var(--cat-accent) 100%);
  box-shadow:0 1px 2px rgba(0,0,0,.5);
}
.nav-line__cats a[data-cat-accent]:hover{
  color:var(--cat-accent);
  text-decoration:none;
  transform:translateX(.08rem);
}
.nav-line__cats a:not([data-cat-accent]):hover{
  color:var(--line-accent);
  padding-left:1.05rem;
  text-decoration:none;
  transform:translateX(.08rem);
}
@media(max-width:599px){.nav-line__cats{grid-template-columns:1fr}}
@media(min-width:900px){
  .nav-dropdown-panel--products .nav-line--fuel-gas{
    grid-template-columns:minmax(12rem,18rem) minmax(0,1fr);
    align-items:start;
  }
  .nav-dropdown-panel--products .nav-line--fuel-gas .nav-line__cats{
    grid-template-columns:1fr;
    row-gap:.05rem;
    width:auto;
    max-width:22rem;
  }
  .nav-dropdown-panel--products .nav-line--cylinder-stands{grid-template-columns:minmax(12rem,18rem) max-content}
  .nav-dropdown-panel--products .nav-line--cylinder-stands .nav-line__cats{
    grid-template-columns:repeat(2,max-content);
    column-gap:1.25rem;
    row-gap:.12rem;
    justify-content:start;
    width:max-content;
    max-width:100%;
  }
}
.nav-dropdown-panel--products .nav-line--full .nav-line__cats a:hover,
.nav-dropdown-panel--products .nav-line--full .nav-line__cats a:not([data-cat-accent]):hover{
  color:var(--nav-panel-muted,#A0A4A8);
  transform:translateX(.08rem);
}
.nav-dropdown__chev,.nav-line__chev{display:inline-block;width:.45rem;height:.45rem;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);transition:transform .28s ease;flex-shrink:0}
.nav-dropdown--products.is-mobile-open>.nav-dropdown__trigger .nav-dropdown__chev,.nav-line--has-cats.is-expanded .nav-line__chev{transform:rotate(-135deg)}
@media(max-width:899px){
  .nav-dropdown-panel--products .nav-line__toggle{color:var(--nav-panel-text,#F5F5F5)}
  .nav-dropdown--products .nav-dropdown__trigger{color:inherit}
  .nav-dropdown-panel--products .nav-line__toggle .nav-line__chev,
  .nav-dropdown--products .nav-dropdown__trigger .nav-dropdown__chev{
    width:0;height:0;border:none;border-left:.35rem solid transparent;border-right:.35rem solid transparent;
    border-top:.45rem solid currentColor;transform:none;transition:transform .25s ease;
  }
  .nav-line--has-cats.is-expanded .nav-line__toggle .nav-line__chev,
  .nav-dropdown--products.is-mobile-open .nav-dropdown__trigger .nav-dropdown__chev{transform:rotate(180deg)}
  .nav-dropdown--products .nav-dropdown__trigger .nav-dropdown__chev{
    border-top-color:currentColor;
  }
}
@keyframes navPanelIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:899px){
  .nav-dropdown--products{width:100%}
  .nav-dropdown--products .nav-dropdown__head{display:flex;align-items:center;justify-content:space-between;width:100%;gap:.35rem}
  .nav-dropdown__caret{display:none}
  .nav-dropdown__link{flex:1;padding:.55rem 0}
  .nav-dropdown__trigger{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:2rem;height:2rem;padding:0;margin:0;background:transparent;border:none;font:inherit;color:inherit;cursor:pointer}
  .nav-dropdown__trigger:hover{color:var(--color-brown)}
  .nav-dropdown-panel--products{display:none;margin-top:0;padding-left:0;animation:none}
  .nav-dropdown--products.is-mobile-open .nav-dropdown-panel--products{display:block;animation:navPanelIn .3s ease}
  .nav-mega{grid-template-columns:1fr}
  .nav-line__head{display:flex;align-items:flex-start;justify-content:space-between;gap:.5rem}
  .nav-line__head .nav-line__title{flex:1;min-width:0}
  .nav-line__toggle{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:2rem;height:2rem;margin:0;padding:0;background:transparent;border:none;color:var(--nav-panel-text,#F5F5F5);cursor:pointer}
  .nav-line--has-cats .nav-line__cats{max-height:0;opacity:0;overflow:hidden;margin:0;padding-top:0;transition:max-height .35s ease,opacity .28s ease,padding .28s ease}
  .nav-line--has-cats.is-expanded .nav-line__cats{max-height:28rem;opacity:1;padding-top:.3rem}
}
@media(min-width:900px){
  .nav-dropdown--products .nav-dropdown__trigger{display:none}
  .nav-dropdown__trigger{display:inline-flex;align-items:center;justify-content:center;width:auto;padding:0;border:none;background:transparent;font:inherit;color:inherit;cursor:pointer;pointer-events:none}
  .nav-dropdown__trigger .nav-dropdown__chev{display:none}
  .nav-line__head{display:block}
  .nav-line__toggle{display:none}
  .nav-dropdown-panel--products .nav-line--has-cats .nav-line__cats{max-height:none!important;opacity:1!important;overflow:visible;padding-top:0!important}
}
@media(max-width:899px){
  .nav-dropdown-panel--products{
    position:static;max-width:none;width:100%;max-height:none;overflow:visible;
    box-shadow:0 12px 32px rgba(0,0,0,.28);border:none;margin-top:0;
  }
}
.btn{
  display:inline-block;
  background:color-mix(in srgb,var(--accent) 20%,#111111);
  color:var(--btn-on-accent,#fff);
  padding:.7rem 1.25rem;
  font-weight:700;
  border:1px solid rgba(0,0,0,.85);
  border-radius:3px;
  cursor:pointer;
  text-decoration:none;
  box-shadow:0 6px 14px color-mix(in srgb,var(--accent) 26%,transparent);
  transition:transform .16s ease,filter .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease;
}
.btn:hover{
  filter:brightness(1.02);
  text-decoration:none;
  transform:translateY(-1px);
  box-shadow:0 8px 18px color-mix(in srgb,var(--accent) 34%,transparent);
}
.btn:active{
  transform:translateY(0);
  box-shadow:0 4px 10px color-mix(in srgb,var(--accent) 24%,transparent);
}
.btn-outline{
  background:transparent;
  color:var(--accent);
  border:2px solid var(--accent);
  border-radius:3px;
}
.btn-outline:hover{
  box-shadow:none;
  background:color-mix(in srgb,var(--accent) 8%,transparent);
}
.btn-sm{padding:.45rem .9rem;font-size:.85rem}
.hero{position:relative;min-height:62vh;display:grid;align-items:center;color:#fff;background-color:#000;overflow:hidden}
.hero-carousel{isolation:isolate;--hero-slide-accent:var(--color-red)}
.hero-slides{position:absolute;inset:0;z-index:0}
.hero-slide{position:absolute;inset:0;background-color:#000;background-position:center;background-repeat:no-repeat;background-size:cover;opacity:0;transition:opacity 1.1s cubic-bezier(.4,0,.2,1);transform:scale(1.04)}
.hero-slide.is-active{opacity:1;z-index:1;animation:heroSlideZoom 20s ease-in-out infinite alternate}
.hero-scrim{position:absolute;inset:0;z-index:2;pointer-events:none;background:linear-gradient(108deg,rgba(0,0,0,.84) 0%,rgba(0,0,0,.68) 34%,rgba(0,0,0,.32) 52%,rgba(0,0,0,.12) 68%,transparent 88%),linear-gradient(180deg,rgba(0,0,0,.4) 0%,transparent 38%,rgba(0,0,0,.62) 100%);animation:heroOverlayIn 1.1s ease both}
.hero-carousel::before{content:'';position:absolute;inset:0;z-index:2;pointer-events:none;background:linear-gradient(125deg,color-mix(in srgb,var(--hero-slide-accent,#000) 38%,transparent) 0%,transparent 52%);opacity:.9;transition:opacity 1s ease}
.hero-copy{position:relative;z-index:3;width:min(1140px,92vw);margin:0 auto;padding:clamp(2.75rem,7vh,4rem) 0 clamp(4.75rem,11vh,6.25rem);display:grid;grid-template-columns:minmax(0,1fr)}
.hero-panel{grid-area:1/1;align-self:center;max-width:38rem;width:100%;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(18px);transition:opacity .55s cubic-bezier(.4,0,.2,1),transform .55s cubic-bezier(.4,0,.2,1),visibility .55s}
.hero-panel.is-active{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0);z-index:1}
.hero-eyebrow{display:inline-flex;align-items:center;gap:.7rem;margin:0 0 .85rem;font-size:.72rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.88)}
.hero-eyebrow__bar{display:block;width:2.75rem;height:3px;background:var(--panel-accent,var(--hero-slide-accent));transform:scaleX(0);transform-origin:left}
.hero-panel.is-active .hero-eyebrow__bar{transform:scaleX(1)}
.hero-panel.is-active.is-animating .hero-eyebrow__bar{animation:heroBarGrow .5s cubic-bezier(.22,1,.36,1) .04s both}
.hero-title{font-family:var(--font-display);font-size:clamp(1.85rem,4.6vw,3.25rem);line-height:1.08;margin:0 0 1rem;max-width:16ch;text-wrap:balance;text-shadow:0 2px 28px rgba(0,0,0,.45)}
.hero-panel.is-active.is-animating .hero-title{animation:heroTextIn .72s cubic-bezier(.22,1,.36,1) .1s both}
.hero-lead{max-width:46ch;margin:0;font-size:clamp(1rem,2vw,1.12rem);line-height:1.55;color:rgba(255,255,255,.9);text-shadow:0 1px 12px rgba(0,0,0,.35)}
.hero-panel.is-active.is-animating .hero-lead{animation:heroTextIn .72s cubic-bezier(.22,1,.36,1) .22s both}
.hero-actions{display:flex;gap:.85rem;flex-wrap:wrap;margin-top:1.45rem}
.hero-panel.is-active.is-animating .hero-actions{animation:heroTextIn .72s cubic-bezier(.22,1,.36,1) .34s both}
.hero-btn-primary{background:var(--panel-accent,var(--hero-slide-accent));color:var(--btn-on-accent,#fff)}
.hero-btn-primary:hover{filter:brightness(1.08);box-shadow:0 8px 22px color-mix(in srgb,var(--panel-accent,var(--hero-slide-accent)) 40%,transparent)}
.hero-btn-outline{color:#fff;border-color:rgba(255,255,255,.75);font-size:.88rem;font-weight:600;padding:.65rem 1.1rem}
.hero-btn-outline:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff}
.hero-controls{position:absolute;inset:auto 0 1.25rem;z-index:4;display:flex;align-items:center;justify-content:center;gap:1rem;padding:0 1rem;pointer-events:none}
.hero-dots{display:flex;gap:.5rem;pointer-events:auto}
.hero-dot{width:10px;height:10px;padding:0;border:2px solid rgba(255,255,255,.85);border-radius:50%;background:transparent;cursor:pointer;transition:transform .2s ease,background .2s ease,border-color .2s,box-shadow .2s}
.hero-dot.is-active{background:var(--hero-slide-accent,#fff);border-color:var(--hero-slide-accent,#fff);box-shadow:0 0 0 3px rgba(255,255,255,.25);transform:scale(1.15)}
.hero-dot:hover{border-color:#fff;background:rgba(255,255,255,.45)}
.hero-arrow{pointer-events:auto;width:2.5rem;height:2.5rem;border:1px solid rgba(255,255,255,.6);border-radius:50%;background:rgba(0,0,0,.35);color:#fff;font-size:1.35rem;line-height:1;cursor:pointer;display:grid;place-items:center;transition:background .2s ease,border-color .2s ease,transform .2s}
.hero-arrow:hover{background:rgba(0,0,0,.55);border-color:#fff}
.hero-arrow:active{transform:scale(.96)}
.section{padding:3.5rem 0}
.section-alt{background:var(--bg-alt)}
.section h2{font-family:var(--font-display);font-size:clamp(1.5rem,3vw,2.2rem);margin:0 0 1rem}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.25rem}
.product-grid .card__media{display:flex;align-items:center;justify-content:center;width:100%;aspect-ratio:1/1;height:auto;flex-shrink:0;overflow:hidden;background:#fff;border-bottom:1px solid rgba(0,0,0,.06)}
.product-grid .card__media>a{display:flex;align-items:center;justify-content:center;width:100%;height:100%;min-height:0;min-width:0;padding:.65rem;box-sizing:border-box}
.product-grid .card__media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center;background:transparent;flex-shrink:1;min-width:0;min-height:0}
.product-grid .card__placeholder{display:block;width:100%;height:100%;background:#fff}
.product-grid .card h3{font-size:1rem;margin:.5rem 0 0}
.product-grid .card h3 a{color:inherit;text-decoration:none}
.product-grid .card h3 a:hover{color:var(--accent)}
.category-section__title{font-family:var(--font-display);font-size:1.35rem;margin:2rem 0 1rem;color:var(--text)}
.category-section__title:first-child{margin-top:0}
.grid-lines{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.25rem;margin-top:1.5rem;align-items:stretch}
@media(min-width:768px){.grid-lines{grid-template-columns:repeat(4,minmax(0,1fr))}}
.grid-lines .card{height:100%}
.grid-lines .card-body{flex:1;display:flex;flex-direction:column;gap:.5rem}
.grid-lines .card h3{min-height:2.75em;line-height:1.25}
.grid-lines .card-body .muted{flex:1;margin:0;line-height:1.55}
.grid-lines .card-body .btn{margin-top:auto;align-self:flex-start}
.card{background:var(--surface);border:1px solid rgba(0,0,0,.08);overflow:hidden;display:flex;flex-direction:column;transition:transform .28s cubic-bezier(.22,1,.36,1),box-shadow .28s ease,border-color .28s ease}
.card:hover{transform:translateY(-5px);box-shadow:0 14px 36px rgba(0,0,0,.1)}
.card--line{border-top:6px solid var(--line-accent, var(--accent))}
.card>a>img,.card>a:first-child img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:transform .45s cubic-bezier(.22,1,.36,1)}
.card:hover img{transform:scale(1.04)}
.product-grid .card:hover .card__media img{transform:scale(1.03)}
.card-body{padding:1.1rem;flex:1;display:flex;flex-direction:column;gap:.5rem}
.card h3{margin:0;font-family:var(--font-display);font-size:1.15rem}
.card-meta{display:block;margin-top:.4rem;font-size:.78rem;font-weight:600;line-height:1.35;letter-spacing:.02em;color:var(--line-accent,var(--accent))}
.line-kicker{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--line-accent,var(--accent));margin-bottom:.55rem}
.line-intro{max-width:52rem}
.line-intro__p{font-size:clamp(1rem,2.2vw,1.35rem);line-height:2;margin:0 0 1.25rem;color:var(--text)}
.line-intro__p strong{font-weight:700}
.line-intro__figure{background:#fff}
.line-intro__media{display:flex;justify-content:center;align-items:center}
.line-intro__media img{display:block;max-width:min(280px,72vw);width:100%;height:auto;margin:0 auto}
.line-intro__media--wide img{max-width:min(960px,92vw)}
.about-banner{background:var(--bg-alt);padding:0;margin:0;border-bottom:none}
.about-banner__inner{display:flex;justify-content:center;align-items:center;padding:0;margin:0 auto}
main>.about-banner:first-child{margin-top:0}
.about-banner img{display:block;width:auto;max-width:min(1140px,92vw);height:auto;max-height:min(420px,42vw);margin:0 auto;object-fit:contain;object-position:center}
.about-content{max-width:42rem;margin:0 auto;text-align:center;padding:0 clamp(.75rem,3vw,1.25rem) 2.5rem}
.about-lead{font-size:1.05rem;line-height:1.75;margin:0 0 2rem;color:var(--text)}
.about-section__title{font-family:var(--font-display);font-size:1.25rem;font-weight:700;margin:2.25rem 0 .85rem;color:var(--text)}
.about-content p{font-size:1rem;line-height:1.8;margin:0 0 1rem;color:var(--text)}
.about-cta{margin-top:2.5rem;margin-bottom:0}
.about-body.section{padding:3.5rem 0 0}
main:has(.about-body)+.site-footer{margin-top:0}
.pill{display:inline-block;font-size:.75rem;font-weight:700;padding:.2rem .55rem;border-radius:999px;background:var(--accent);color:var(--btn-on-accent,#fff)}
.section-stats{padding:3rem 0;background:linear-gradient(180deg,var(--bg-alt) 0%,var(--bg) 100%);border-block:1px solid color-mix(in srgb,var(--accent) 12%,transparent)}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1.15rem}
@media(max-width:768px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}}
.stat-item{
  --stat-icon-color:var(--accent);
  position:relative;display:flex;align-items:center;gap:clamp(.9rem,2.5vw,1.2rem);
  min-height:7.75rem;padding:1.75rem 1.2rem 1.65rem 1.05rem;
  background:var(--surface);border:1px solid rgba(0,0,0,.07);
  text-align:left;overflow:hidden;
  transition:transform .35s cubic-bezier(.22,1,.36,1),box-shadow .35s ease,border-color .35s ease;
}
.stat-item::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--stat-icon-color),color-mix(in srgb,var(--stat-icon-color) 55%,var(--accent-2)));transform:scaleX(0);transform-origin:left;transition:transform .55s cubic-bezier(.22,1,.36,1)}
.stat-item.is-visible::before,.stat-item:hover::before{transform:scaleX(1)}
.stat-item:hover{transform:translateY(-6px);box-shadow:0 16px 32px color-mix(in srgb,var(--stat-icon-color) 16%,transparent);border-color:color-mix(in srgb,var(--stat-icon-color) 28%,transparent)}
.stat-icon{
  flex:0 0 auto;display:flex;align-items:center;align-self:stretch;
  margin:0;padding:0;color:var(--stat-icon-color);
}
.stat-icon svg{
  width:clamp(2.65rem,5.8vw,3.25rem);height:clamp(2.65rem,5.8vw,3.25rem);
  stroke:currentColor;fill:none;stroke-width:2.1;stroke-linecap:round;stroke-linejoin:round;
}
.stat-icon svg .stat-shape-fill{fill:transparent;stroke:currentColor}
.stat-item.is-visible .stat-icon{animation:fadeUp .5s cubic-bezier(.22,1,.36,1) both;animation-delay:var(--reveal-delay,0s)}
.stat-body{display:flex;flex-direction:column;justify-content:center;gap:.45rem;min-width:0;flex:1}
.stat-value{
  display:block;width:100%;text-align:center;
  font-size:clamp(1.7rem,3.8vw,2.45rem);font-weight:800;font-family:var(--font-display);
  color:var(--stat-icon-color);line-height:1.05;letter-spacing:-.03em;
}
.stat-item.is-visible .stat-value{animation:statPop .55s cubic-bezier(.22,1,.36,1) both;animation-delay:calc(var(--reveal-delay,0s) + .06s)}
.stat-label{display:block;margin:0;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:#000000;line-height:1.25;text-align:center}
.stat-item.is-visible .stat-label{animation:fadeUp .5s cubic-bezier(.22,1,.36,1) both;animation-delay:calc(var(--reveal-delay,0s) + .12s)}
@keyframes statPop{from{opacity:0;transform:scale(.88) translateY(8px)}to{opacity:1;transform:scale(1) translateY(0)}}
.breadcrumb{padding:1rem 0;font-size:.88rem;color:var(--muted)}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--color-brown);text-decoration:none}
.page-title{padding:2rem 0 1rem}
.page-title h1{margin:0;font-family:var(--font-display);font-size:clamp(1.8rem,4vw,2.6rem)}
body[data-product-line] .page-title{
  border-left:12px solid var(--accent);
  padding-left:1.15rem;
  background:color-mix(in srgb, var(--accent) 8%, var(--bg));
  padding-top:1.35rem;
  padding-bottom:1.35rem;
  margin-bottom:0;
}
.line-badge{display:inline-block;font-size:.8rem;font-weight:700;padding:.35rem .75rem;margin-bottom:.65rem;background:var(--accent);color:var(--btn-on-accent,#fff)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:start}
@media(max-width:768px){.split{grid-template-columns:1fr}}
.product-detail-img{border:none}
.spec-list{list-style:none;padding:0;margin:1rem 0}
.spec-list li{padding:.45rem 0;border-bottom:1px solid rgba(0,0,0,.08)}
.spec-list li[id]{scroll-margin-top:5.5rem}
.spec-list a{color:var(--text);font-weight:600}
.spec-list a:hover{color:var(--accent)}
.doc-list{list-style:none;padding:0;margin:0}
.doc-list li{display:flex;justify-content:space-between;gap:1rem;padding:.85rem 0;border-bottom:1px solid rgba(0,0,0,.08);align-items:center}
.doc-list a{font-weight:600;transition:color .2s ease,padding-left .2s ease}
.doc-list a:hover{padding-left:.25rem}
.doc-list li{transition:background .2s ease}
.doc-list li:hover{background:color-mix(in srgb,var(--accent) 5%,transparent)}
.contact-form label{display:block;font-weight:600;margin:.75rem 0 .25rem}
.contact-form input,.contact-form textarea{width:100%;padding:.65rem;border:1px solid rgba(0,0,0,.2);font:inherit;background:var(--surface);color:var(--text);transition:border-color .2s ease,box-shadow .2s ease}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent)}
.contact-map{position:relative;margin-top:2.5rem;border-radius:var(--radius,8px);overflow:hidden;border:1px solid color-mix(in srgb,var(--text) 12%,transparent);background:var(--bg-alt)}
.contact-map iframe{display:block;width:100%;height:min(380px,52vh);border:0}
.contact-map__label{position:absolute;left:50%;bottom:1.25rem;transform:translateX(-50%);max-width:calc(100% - 2rem);padding:.65rem 1.1rem;background:var(--surface);color:var(--text);font-weight:600;font-size:.95rem;line-height:1.4;text-align:center;box-shadow:0 8px 28px rgba(0,0,0,.14);border-radius:6px}
.contact-map__label a{color:inherit;text-decoration:none}
.contact-map__label a:hover{color:var(--accent);text-decoration:underline}
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,340px),1fr));gap:1.5rem;margin-top:1.5rem}
.video-section{margin-top:2.75rem;padding-top:2.25rem;border-top:1px solid var(--border)}
.video-section__title{margin:0 0 .35rem;font-family:var(--font-display);font-size:clamp(1.25rem,2.5vw,1.5rem);font-weight:700;color:var(--accent)}
.video-section__intro{margin:0 0 1rem}
.video-embed{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:8px;background:#111;box-shadow:0 8px 24px rgba(0,0,0,.12)}
.video-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.warranty-content{max-width:52rem}
.warranty-section__title{
  margin:0 0 1.25rem;
  font-family:var(--font-display);
  font-size:clamp(1.35rem,3vw,1.75rem);
  font-weight:700;
  color:var(--accent);
}
.warranty-p{line-height:1.75;margin:0 0 1rem}
.warranty-p strong{text-decoration:underline}
.warranty-coverage{display:flex;flex-wrap:wrap;justify-content:center;gap:2.5rem 3.5rem;margin:2rem 0}
.warranty-coverage-item{display:flex;flex-direction:column;align-items:center;text-align:center;gap:.65rem}
.warranty-coverage-figure{background:transparent;line-height:0}
.warranty-coverage-figure img{display:block;width:auto;max-width:min(130px,30vw);height:auto}
.warranty-coverage-label{margin:0;font-size:1rem;line-height:1.4}
.warranty-coverage-label strong{font-weight:700;text-decoration:none}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .65s cubic-bezier(.22,1,.36,1),transform .65s cubic-bezier(.22,1,.36,1);transition-delay:var(--reveal-delay,0s)}
.reveal.is-visible{opacity:1;transform:translateY(0)}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
@keyframes heroSlideZoom{from{transform:scale(1)}to{transform:scale(1.07)}}
@keyframes heroOverlayIn{from{opacity:0}to{opacity:1}}
@keyframes heroTextIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes heroBarGrow{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@keyframes navSlideIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
.nav.open{animation:navSlideIn .28s ease both}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero-slide{transition:none}
  .hero-slide.is-active{animation:none!important;transform:none}
  .hero-scrim,.hero-carousel::before{animation:none!important}
  .hero-panel,.hero-panel.is-active{transition:none;transform:none}
  .hero-panel.is-active.is-animating .hero-eyebrow__bar,.hero-panel.is-active.is-animating .hero-title,.hero-panel.is-active.is-animating .hero-lead,.hero-panel.is-active.is-animating .hero-actions{animation:none!important}
  .hero-eyebrow__bar{transform:scaleX(1)}
  .reveal{opacity:1;transform:none;transition:none}
  .card,.card img,.btn,.logo-img,.site-header,.nav-dropdown-panel,.stat-item{transition:none}
  .stat-item::before{transition:none;transform:scaleX(1)}
  .stat-item.is-visible .stat-value,.stat-item.is-visible .stat-label{animation:none}
  .card:hover{transform:none;box-shadow:none}
  .card:hover img{transform:none}
}
.error-page{text-align:center;padding:5rem 1rem}
.error-page h1{font-size:5rem;margin:0;font-family:var(--font-display);color:var(--accent)}
.site-footer{position:relative;background:var(--footer-bg);color:var(--footer-text);margin-top:3.5rem;padding:0 0 1.25rem}
.site-footer::before{content:'';display:block;height:5px;background:var(--brand-bar)}
.site-footer::after{content:'';display:block;height:4px;background:var(--footer-strip-accent,var(--accent))}
.site-footer .footer-inner{padding:2.5rem 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1.75rem}
.footer-grid h4{margin:0 0 .65rem;color:var(--footer-text);font-size:.95rem}
.footer-grid p{margin:.25rem 0;color:var(--footer-muted);line-height:1.5}
.footer-grid a{display:block;color:var(--footer-muted);margin:.35rem 0;text-decoration:none;transition:color .2s ease,padding-left .2s ease}
.footer-grid a:hover{color:var(--footer-link-hover);padding-left:.2rem;text-decoration:none}
.footer-grid a[href^="tel:"]{color:var(--footer-text);font-weight:600}
.footer-tagline{font-size:1.05rem;font-weight:700;color:var(--footer-text);margin:.25rem 0 .5rem}
.footer-logo{display:inline-block;line-height:0;margin:.35rem 0 .55rem;text-decoration:none}
.footer-logo:hover{text-decoration:none;opacity:.92}
.footer-logo img{display:block;width:auto;max-width:min(190px,72vw);height:auto;object-fit:contain}
.footer-since{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--color-brown);margin-bottom:.35rem}
.footer-bottom{margin-top:2rem;padding:1.1rem 0;background:color-mix(in srgb,var(--footer-bg) 86%,var(--footer-strip-accent,var(--accent)));font-size:.85rem;color:var(--footer-muted);text-align:center}
.footer-bottom p{margin:0}
@media(max-width:900px){
  .nav-toggle{display:block}
  .nav{display:none;width:100%;flex-direction:column;align-items:flex-start;padding:.5rem 0}
  .nav.open{display:flex}
  .header-inner{flex-wrap:wrap}
}
@media(prefers-reduced-motion:reduce){
  .nav-dropdown--products.is-mobile-open .nav-dropdown-panel--products,.nav-line--has-cats .nav-line__cats{animation:none!important;transition:none!important}
}