:root {
  --am-navy: #0c335f; --am-teal: #49bbbb; --am-ink: #10212f; --am-white: #fff;
  --am-ice: #f2f7f8; --am-line: #d7e1e4; --am-success: #2d8c7f;
  --am-container: 1600px; --am-section-space: 100px; --am-radius: 6px;
}
* { box-sizing: border-box; }
.seo-breadcrumb-list,.seo-breadcrumb-item { display:contents;list-style:none;margin:0;padding:0; }
.seo-was-h1 {font-size:2em;font-weight:700;margin-block:.67em;}
.seo-was-h2 {font-size:1.5em;font-weight:700;margin-block:.83em;}
.seo-was-h3 {font-size:1.17em;font-weight:700;margin-block:1em;}
.seo-was-h4 {font-size:1em;font-weight:700;margin-block:1.33em;}
.seo-was-h5 {font-size:.83em;font-weight:700;margin-block:1.67em;}
.seo-was-h6 {font-size:.67em;font-weight:700;margin-block:2.33em;}
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--am-ink); background: var(--am-white); font-size: 17px; line-height: 1.7; }
img { display: block; max-width: 100%; height: auto; }
a { color: var(--am-navy); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--am-teal); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 2px solid var(--am-teal); outline-offset: 3px; }
.am-container { width: min(calc(100% - 80px), var(--am-container)); margin-inline: auto; }
.am-section { padding-block: var(--am-section-space); }
.am-eyebrow { margin: 0 0 12px; color: var(--am-teal); font-size: 14px !important; font-weight: 700; text-transform: uppercase; }
.am-title { margin: 0; color: var(--am-navy); font-size: 44px !important; line-height: 1.18; letter-spacing: .01em; }
.am-intro { max-width: 740px; margin: 18px 0 0; }
.am-button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 10px; padding: 10px 24px; border: 1px solid var(--am-teal); border-radius: 4px; background: var(--am-teal); color: var(--am-white); font-weight: 700; cursor: pointer; box-shadow: 0 0 0 1px rgba(73,187,187,.12), 0 8px 24px rgba(12,51,95,.12); }
.am-button:hover { color: var(--am-white); background: #338f91; border-color: #338f91; }
.am-button:active { background: var(--am-navy); }
.am-button[disabled] { opacity: .45; pointer-events: none; }
.am-section-head { display: flex; align-items: end; justify-content: space-between; gap: 32px; margin-bottom: 36px; position: relative; }
.am-section-head::after { content:""; position:absolute; left:0; bottom:-16px; width:44px; height:2px; background:var(--am-teal); box-shadow:12px 0 0 rgba(73,187,187,.22); }
.site-main { min-height: 55vh; overflow: clip; }
/* System error page: reuse the site palette, container and button components. */
.error-404 { background:var(--am-ice); padding-block:160px 100px; }
.error-404 .err-wrap { display:flex;flex-direction:column;align-items:center;text-align:center; }
.error-404 .err-code { margin:0 0 20px;color:var(--am-teal);font:700 clamp(100px,12vw,180px)/1 var(--am-heading-font);letter-spacing:-.06em; }
.error-404 .err-intro { max-width:580px;margin:24px 0 32px;color:var(--am-navy); }
.error-404 .err-search { display:flex;gap:12px;width:min(100%,580px);margin-bottom:24px; }
.error-404 .err-search input { min-width:0;flex:1;border:1px solid var(--am-line);border-radius:4px;background:#fff;padding:12px 16px;font:inherit;color:var(--am-navy); }
.error-404 .am-button { flex-shrink:0;min-height:50px;font:600 15px/1.4 var(--am-heading-font); }
.error-404 .err-home { background:transparent;border-color:var(--am-navy);color:var(--am-navy);box-shadow:none; }
.error-404 .err-home:hover { background:var(--am-navy);color:#fff; }
@media(max-width:1199px) { .error-404 {padding-block:120px 72px;} }
@media(max-width:767px) { .error-404 {padding-block:108px 56px;} .error-404 .err-search {gap:8px;} .error-404 .err-search .am-button {padding-inline:18px;} .error-404 .err-intro {margin-block:20px 28px;} }
.am-privacy-content { width:min(var(--am-container),calc(100% - clamp(40px,8.334vw,160px)));margin-inline:auto;padding-block:160px 80px;overflow-wrap:anywhere; }
@media (max-width:1199px) { .am-privacy-content {padding-block:112px 48px;} }
@media (max-width:767px) { .am-privacy-content {width:calc(100% - 40px);} }
.am-inner-hero { height: 480px; display: grid; align-items: center; color: #fff; background: linear-gradient(90deg, rgba(12,51,95,.82), rgba(16,33,47,.3)), var(--inner-banner-image, linear-gradient(120deg,#0c335f,#10212f)) center/cover; }
.am-inner-hero :is(h1,.seo-was-h1) { max-width: 900px; margin: 0; font-size: clamp(44px,5vw,72px); line-height: 1.08; }
.am-breadcrumbs { border-bottom: 1px solid var(--am-line); padding: 14px 0; font-size: 15px; }
/* Desktop breadcrumbs retain their full labels on one horizontally scrollable line. */
@media (min-width:1200px) {
  body:not(.home) :is(.ip-air-handling-units-2,.ip-contact-2,.ip-download-center-2,.ip-faq-2,.ip-news-design-2,.ip-maintenance-service-qilu-hospital-2,.ip-peking-union-medical-college-hospital-2,.ip-projects-design-2,.ip-public-healthcare-2,.ip-service-support-2) .ip-inner,
  body:not(.home) :is(.aa-breadcrumb,.hc-breadcrumb,.am-breadcrumbs .am-container,.editorial-detail__breadcrumb .container) {
    flex-wrap:nowrap;white-space:nowrap;overflow-x:auto;
  }
  body:not(.home) :is(.ip-air-handling-units-2,.ip-contact-2,.ip-download-center-2,.ip-faq-2,.ip-news-design-2,.ip-maintenance-service-qilu-hospital-2,.ip-peking-union-medical-college-hospital-2,.ip-projects-design-2,.ip-public-healthcare-2,.ip-service-support-2) .ip-inner :is(a,p,span),
  body:not(.home) :is(.aa-breadcrumb,.hc-breadcrumb,.am-breadcrumbs,.editorial-detail__breadcrumb) :is(a,p,span,b,i) {
    width:auto;max-width:none;flex-shrink:0;white-space:nowrap;
  }
}
.am-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 24px; }
.am-card-media { overflow: hidden; background: var(--am-ice); border:1px solid var(--am-line); border-radius: var(--am-radius); aspect-ratio: 3/2; }
.am-card-media img { width: 100%; height: 100%; object-fit: cover; }
.am-card :is(h2,.seo-was-h2),.am-card :is(h3,.seo-was-h3) { color: var(--am-navy); line-height: 1.3; }
.screen-reader-text { position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0; }
@media (max-width: 1199px) { .am-container { width: min(calc(100% - 56px), var(--am-container)); } }
@media (max-width: 767px) { body { font-size:16px;line-height:1.625; } .am-container { width: calc(100% - 40px); } .am-title { font-size:32px !important; } .am-section-head { display:block; } .am-grid { grid-template-columns:1fr; } .am-inner-hero { height:480px;background-image:linear-gradient(90deg,rgba(12,51,95,.82),rgba(16,33,47,.3)),var(--inner-banner-mobile-image,var(--inner-banner-image)); } }
@media (prefers-reduced-motion: reduce) { *,*::before,*::after { scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important; } }