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/* Editorial refinements aligned to the reference page hierarchy. */
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/* Interaction and scroll-enter motion */
.desktop-nav a{position:relative}.desktop-nav a:after{content:"";position:absolute;right:27px;bottom:17px;left:27px;height:2px;background:#fff;transform:scaleX(0);transform-origin:right;transition:transform .3s}.desktop-nav a:hover:after,.desktop-nav a.active:after{transform:scaleX(1);transform-origin:left}.desktop-nav a.active{background:rgba(0,0,0,.28)}.hero-button,.button,.text-link,.news-more,.article-nav a{transition:color .25s,background-color .25s,border-color .25s,transform .25s}.hero-button:hover,.button:hover{transform:translateY(-2px)}.feature-card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 38%,rgba(0,0,0,.45));opacity:.6;pointer-events:none;transition:opacity .4s}.feature-card:hover:after{opacity:.9}.feature-card:hover img{transform:scale(1.07)}.feature-card .feature-copy{z-index:1;transition:transform .35s}.feature-card:hover .feature-copy{transform:translateY(-8px)}.product-card{box-shadow:0 0 0 rgba(0,0,0,0)}.product-card:hover{box-shadow:0 16px 30px rgba(10,12,14,.12)}.product-card:hover .product-meta strong{letter-spacing:1px}.product-meta strong{transition:letter-spacing .25s}.news-card{transition:transform .3s}.news-card:hover{transform:translateY(-6px)}.news-card>a{overflow:hidden;display:block}.news-card img{transition:transform .55s}.news-card:hover img{transform:scale(1.06)}.news-card h3 a,.news-row h3 a{transition:color .25s}.news-card:hover h3 a,.news-row:hover h3 a{color:#777}.news-row{transition:background-color .3s,padding-left .3s}.news-row:hover{background:#fafafa;padding-left:18px}.news-thumb{overflow:hidden}.news-thumb img{transition:transform .5s}.news-row:hover .news-thumb img{transform:scale(1.05)}.principle-row article,.join-grid article{transition:background-color .3s,color .3s,transform .3s}.principle-row article:hover,.join-grid article:hover{background:#232526;color:#fff;transform:translateY(-5px)}.principle-row article:hover p,.join-grid article:hover p,.principle-row article:hover span,.join-grid article:hover span{color:#d7d7d7}.contact-info article{transition:padding-left .25s,border-color .25s}.contact-info article:hover{padding-left:14px;border-color:#222}.contact-visual{overflow:hidden}.contact-visual img{transition:transform .65s}.contact-visual:hover img{transform:scale(1.045)}.footer-links span{transition:color .25s}.footer-links span:hover{color:#fff}.reveal{opacity:0;transform:translateY(28px);transition:opacity .65s ease var(--reveal-delay,0ms),transform .65s cubic-bezier(.2,.75,.25,1) var(--reveal-delay,0ms)}.reveal.is-visible{opacity:1;transform:none}.hero-enter{animation:hero-copy-in .8s cubic-bezier(.2,.75,.25,1) both}.article-image.reveal{transform:scale(.975)}.article-image.reveal.is-visible{transform:scale(1)}@keyframes hero-copy-in{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}
.float-service{position:fixed;z-index:30;right:0;top:52%;width:58px;min-height:76px;padding:11px 5px 10px;border:1px solid rgba(32,35,38,.12);border-right:0;background:#fff;color:#202326;box-shadow:0 8px 24px rgba(0,0,0,.16);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;font-size:12px;line-height:1.2;letter-spacing:1px;cursor:pointer;transition:color .25s,background .25s,transform .25s,box-shadow .25s}.float-service:hover{background:#202326;color:#fff;transform:translateX(-3px);box-shadow:0 12px 30px rgba(0,0,0,.24)}.float-service span{display:block;width:31px;height:31px;margin:0;background:url('../images/service-icon.svg') center/contain no-repeat;font-size:0;line-height:0;transition:transform .25s}.float-service:hover span{transform:scale(1.08)}.float-service::before{content:"";position:absolute;right:calc(100% + 13px);top:50%;width:172px;height:172px;padding:10px;background:#fff url('../images/service-qr.svg') center/172px 172px no-repeat;box-shadow:0 12px 34px rgba(0,0,0,.2);opacity:0;visibility:hidden;transform:translate(10px,-50%) scale(.94);transform-origin:right center;transition:opacity .25s,visibility .25s,transform .25s;pointer-events:none}.float-service::after{content:"扫码联系服务顾问";position:absolute;right:calc(100% + 13px);top:calc(50% + 107px);width:192px;color:#555;background:#fff;padding:7px 0;text-align:center;font-size:11px;letter-spacing:.5px;box-shadow:0 8px 24px rgba(0,0,0,.12);opacity:0;visibility:hidden;transform:translate(10px,0);transition:opacity .25s,visibility .25s,transform .25s;pointer-events:none}.float-service:hover::before,.float-service:hover::after{opacity:1;visibility:visible;transform:translate(0,-50%) scale(1)}.float-service:hover::after{transform:translate(0,0)}@media(max-width:760px){.float-service{top:auto;right:14px;bottom:83px;width:54px;min-height:62px;border-right:1px solid rgba(32,35,38,.12);border-radius:2px}.float-service::before{right:0;top:auto;bottom:calc(100% + 12px);transform:translateY(8px) scale(.94);transform-origin:right bottom}.float-service::after{right:0;top:auto;bottom:calc(100% + 205px);transform:translateY(8px)}.float-service:hover::before{transform:translateY(0) scale(1)}.float-service:hover::after{transform:translateY(0)}}@media(prefers-reduced-motion:reduce){.float-service,.float-service span,.float-service::before,.float-service::after{transition:none}}

/* Mobile layout polish: compact navigation, scrollable category rail and tighter editorial cards. */
@media(max-width:900px){
  .site-header{top:0;background:rgba(20,22,23,.34);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
  .header-inner{height:68px;align-items:center}
  .brand{width:164px;height:52px;margin-top:0}
  .menu-toggle{width:42px;height:42px;margin-left:auto;padding:0;border:1px solid rgba(255,255,255,.65);border-radius:2px;background:rgba(0,0,0,.18);font-size:0;position:relative}
  .menu-toggle:before,.menu-toggle:after{content:"";position:absolute;left:11px;width:19px;height:2px;background:#fff;transition:transform .25s,top .25s}
  .menu-toggle:before{top:15px;box-shadow:0 6px 0 #fff}
  .menu-toggle:after{top:27px;opacity:0}
  .desktop-nav.open{top:61px;right:15px;width:min(310px,calc(100vw - 30px));padding:7px;background:rgba(24,26,28,.98);border:1px solid rgba(255,255,255,.16);border-radius:2px;box-shadow:0 18px 42px rgba(0,0,0,.3)}
  .desktop-nav.open a{height:48px;padding:0 15px;border-bottom:1px solid rgba(255,255,255,.1);font-size:14px;letter-spacing:.5px}
  .desktop-nav.open a:last-child{border-bottom:0}
  .desktop-nav.open a.active{background:rgba(255,255,255,.12)}
  .desktop-nav.open a.active:before{content:"";width:3px;height:18px;margin-right:10px;background:#fff}
  .page-hero{height:440px;background-position:center 42%;box-shadow:inset 0 -80px 90px rgba(0,0,0,.2)}
  .page-hero:after{background:linear-gradient(180deg,rgba(12,14,15,.14),rgba(12,14,15,.05) 42%,rgba(12,14,15,.42))}
  .crumbbar{background:#fff;border-bottom:1px solid #e5e5e5}
  .crumb-inner{padding:0}
  .crumb-path{height:38px;padding:0 2px;color:#999;font-size:11px;gap:6px;overflow:hidden}
  .crumb-path span:last-child{color:#333;font-weight:700;overflow:hidden;text-overflow:ellipsis}
  .subnav{height:54px;display:flex;align-items:center;gap:7px;padding:0 1px;overflow-x:auto;overflow-y:hidden;scrollbar-width:none}
  .subnav::-webkit-scrollbar{display:none}
  .subnav a{flex:0 0 auto;height:32px;padding:0 14px;border:1px solid #d9d9d9;border-radius:18px;color:#777;background:#fff;font-size:12px;line-height:30px}
  .subnav a:hover,.subnav a.active{border-color:#202326;background:#202326;color:#fff}
}
@media(max-width:520px){
  .container{width:calc(100% - 30px)}
  .site-header{background:rgba(20,22,23,.48)}
  .header-inner{height:62px}
  .brand{width:152px;height:48px}
  .menu-toggle{width:40px;height:40px}
  .desktop-nav.open{top:57px}
  .page-hero{height:390px;background-position:center 40%}
  .crumb-path{height:36px}
  .subnav{height:50px}
  .subnav a{height:30px;padding:0 13px;line-height:28px}
  .news-section{padding:54px 0 62px}
  .news-section .section-head{margin-bottom:24px;text-align:left}
  .news-section .section-head:before{content:"";display:inline-block;width:25px;height:3px;margin:0 8px 5px 0;background:#202326}
  .news-section .section-head h2{display:inline;font-size:23px}
  .news-section .section-head span{margin-bottom:7px;font-size:10px;letter-spacing:1.7px}
  .news-grid{display:grid;grid-template-columns:1fr;gap:0}
  .news-card{display:grid;grid-template-columns:112px minmax(0,1fr);gap:14px;padding:16px 0;border-bottom:1px solid #dedede;transform:none!important}
  .news-card:first-child{padding-top:0}
  .news-card>a{grid-row:1;align-self:stretch;min-height:104px}
  .news-card img{width:100%;height:104px;aspect-ratio:auto;object-fit:cover}
  .news-card-copy{min-width:0;padding:0 0 1px;border:0}
  .news-card time{font-size:10px;letter-spacing:.5px;color:#999}
  .news-card h3{display:-webkit-box;overflow:hidden;margin:3px 0 4px;font-size:15px;line-height:1.45;-webkit-box-orient:vertical;-webkit-line-clamp:2}
  .news-card p{display:none}
  .news-more{margin-top:4px;font-size:10px;letter-spacing:.7px}
  .news-card:hover img{transform:none}
  .news-card:hover .news-card-copy h3 a{color:inherit}
  .catalog-page,.news-page,.editorial-page,.join-page,.contact-page,.article-page{padding:36px 0 56px}
  .catalog-heading{margin-bottom:26px;padding-bottom:16px}
  .catalog-heading h1{font-size:24px}
  .catalog-heading>div>span{font-size:10px;letter-spacing:1.6px}
  .catalog-heading p{font-size:13px;line-height:1.75}
  .news-row{padding:18px 0;gap:14px}
  .news-row h3{font-size:16px;line-height:1.45}
  .news-row p{font-size:12px;line-height:1.7}
}
@media(max-width:360px){
  .news-card{grid-template-columns:96px minmax(0,1fr);gap:11px}
  .news-card>a,.news-card img{min-height:92px;height:92px}
  .news-card h3{font-size:14px}
}

/* Mobile page hierarchy: breadcrumb first, category rail second, centered banner crop. */
@media(max-width:900px){
  .crumbbar{height:auto!important}
  .crumbbar .container.crumb-inner{height:auto;min-height:53px;display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start}
  .crumb-path{width:100%;flex:0 0 auto}
  .crumb-inner>.subnav{width:100%;flex:0 0 auto;border-top:1px solid #ededed}
  .hero,.page-hero{background-attachment:scroll!important;background-position:50% 50%!important;background-size:cover!important}
  .article-nav{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:8px;margin-top:34px;padding-top:14px}
  .article-nav a{width:auto;min-width:0;text-align:left;padding:8px 0;font-size:11px;line-height:1.35;white-space:nowrap}
  .article-nav a:nth-child(2){text-align:center;padding:8px 12px;border:1px solid #d8d8d8;color:#555}
  .article-nav a:last-child{text-align:right}
}
@media(max-width:520px){
  .hero,.page-hero{background-position:center center!important}
  .article-nav{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:5px;margin-top:28px}
  .article-nav a{font-size:10px;letter-spacing:.1px}
  .article-nav a:nth-child(2){padding:7px 9px}
}

/* Persistent navigation: transparent over the hero, solid gray after scrolling. */
.site-header{position:fixed;top:0;z-index:40;background:transparent;transition:background-color .3s,box-shadow .3s,backdrop-filter .3s}
.site-header.scrolled{background:rgba(48,50,52,.94);box-shadow:0 5px 20px rgba(0,0,0,.18);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
@media(max-width:900px){
  .site-header{background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none}
  .site-header.scrolled{background:rgba(48,50,52,.95);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
  .page-hero{height:200px!important}
}
@media(prefers-reduced-motion:reduce){.site-header{transition:none}}
.menu-toggle:before,.menu-toggle:after{left:50%;transform:translateX(-50%)}
.desktop-nav>.nav-item{position:relative;display:flex;height:74px}.desktop-nav>.nav-item>.nav-dropdown{position:absolute;top:74px;left:0;z-index:1;min-width:100%;padding:6px 0;background:rgba(48,50,52,.96);box-shadow:0 12px 24px rgba(0,0,0,.2);opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity .2s,visibility .2s,transform .2s}.desktop-nav>.nav-item:hover>.nav-dropdown,.desktop-nav>.nav-item:focus-within>.nav-dropdown{opacity:1;visibility:visible;transform:none}.desktop-nav>.nav-item>.nav-dropdown a{height:42px;padding:0 20px;white-space:nowrap;background:transparent}.desktop-nav>.nav-item>.nav-dropdown a:after{display:none}.desktop-nav>.nav-item>.nav-dropdown a:hover,.desktop-nav>.nav-item>.nav-dropdown a.active{background:rgba(255,255,255,.14)}
@media(max-width:900px){.desktop-nav.open>.nav-item{display:block;height:auto}.desktop-nav.open>.nav-item>a{height:48px}.desktop-nav.open>.nav-item>.nav-dropdown{position:static;display:block;padding:0 0 6px;background:rgba(0,0,0,.14);box-shadow:none;opacity:1;visibility:visible;transform:none}.desktop-nav.open>.nav-item>.nav-dropdown a{height:40px;padding:0 15px 0 31px;font-size:13px}.desktop-nav.open>.nav-item>.nav-dropdown a.active{background:rgba(255,255,255,.12)}}
.article-image{height:auto;max-height:none;object-fit:contain}