/*
Theme Name: Cuihe English
Theme URI: https://www.cuihebiz.com/
Author: Cuihe
Description: Responsive English corporate theme for microscopy, optical imaging, and laboratory solutions.
Version: 1.0.0
Text Domain: cuihe-en
*/
:root{--navy:#062f59;--blue:#0477b7;--cyan:#36b9e8;--ink:#182433;--muted:#667483;--line:#e7edf2;--soft:#f5f8fb;--dark:#222b34;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:Arial,"Helvetica Neue",sans-serif;line-height:1.7;background:#fff}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto}.container{width:min(var(--max),calc(100% - 40px));margin:auto}.site-header{background:#fff;position:sticky;top:0;z-index:20;box-shadow:0 1px 0 rgba(3,53,91,.08)}.header-inner{height:92px;display:flex;align-items:center;justify-content:space-between;gap:36px}.brand img{display:block;width:158px}.main-nav{display:flex;align-items:center;gap:31px;font-size:15px}.main-nav a{position:relative;padding:35px 0;color:#26333f}.main-nav a:hover,.main-nav a:focus{color:var(--blue)}.main-nav a:after{content:"";position:absolute;left:50%;right:50%;bottom:23px;height:2px;background:var(--blue);transition:.2s}.main-nav a:hover:after{left:0;right:0}.nav-toggle{display:none;border:0;background:none;font-size:27px;color:var(--navy)}.hero{min-height:610px;background:url('assets/images/visual-3.png') center/cover no-repeat;display:flex;align-items:center;color:#fff}.hero-copy{max-width:720px}.eyebrow{font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:#74d7f3;font-weight:700}.hero h1{font-size:52px;line-height:1.15;margin:15px 0 20px;text-shadow:0 4px 18px rgba(0,0,0,.24)}.hero p{font-size:20px;max-width:610px;margin:0 0 32px;color:#eaf6ff}.button{display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;padding:13px 25px;border-radius:2px;font-weight:700;letter-spacing:.02em}.button:hover{background:#005f95}.button.ghost{border:1px solid rgba(255,255,255,.65);background:rgba(255,255,255,.08);margin-left:10px}.section{padding:92px 0}.section.soft{background:var(--soft)}.section.dark{background:#292d31;color:#fff}.section-head{max-width:760px;margin:0 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h2{font-size:34px;margin:0 0 6px}.site-footer{background:#171d23;color:#aeb9c3;padding:60px 0 24px}.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:55px}.footer-logo{filter:brightness(0) invert(1);width:150px;margin-bottom:18px}.footer-grid h3{color:#fff;font-size:15px;text-transform:uppercase;letter-spacing:.1em}.footer-links{display:grid;gap:8px}.footer-bottom{border-top:1px solid #303940;margin-top:42px;padding-top:22px;font-size:13px}.content-hero{background:linear-gradient(110deg,var(--navy),#0b81b0);color:#fff;padding:80px 0}.content-hero h1{font-size:43px;line-height:1.2;margin:0}.content-wrap{padding:70px 0}.entry-content{max-width:850px;font-size:17px}.entry-content p{margin:0 0 20px}.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.post-card{border:1px solid var(--line);padding:28px;background:#fff}.post-card h2{font-size:21px;line-height:1.35}.post-card p{color:var(--muted)}@media(max-width:900px){.main-nav{display:none}.nav-toggle{display:block}.hero{min-height:520px}.hero h1{font-size:42px}.about-grid,.knowledge{grid-template-columns:1fr}.cards{grid-template-columns:repeat(2,1fr)}.solutions,.post-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}}@media(max-width:600px){.container{width:min(100% - 28px,var(--max))}.header-inner{height:74px}.brand img{width:135px}.hero{min-height:500px}.hero h1{font-size:34px}.hero p{font-size:17px}.section{padding:64px 0}.section-head h2,.about-copy h2{font-size:30px}.cards,.solutions,.post-grid,.footer-grid{grid-template-columns:1fr}.download-row{align-items:flex-start;flex-direction:column}.button.ghost{margin:10px 0 0}.stats{grid-template-columns:1fr}.content-hero h1{font-size:34px}}
@media(max-width:900px){.main-nav.open{display:flex;position:absolute;left:0;right:0;top:92px;background:#fff;padding:20px;box-shadow:0 12px 24px rgba(0,0,0,.1);flex-direction:column;align-items:flex-start;gap:4px}.main-nav.open a{padding:10px 0}}
.hero{background-image:url('assets/images/hero-v2.png')}.knowledge img{display:none}
.detail-image{max-width:760px;margin:0 0 38px;padding:24px;border:1px solid var(--line);background:#fff}.detail-image img{display:block;max-height:620px;width:auto;margin:auto}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:45px}.product-card{border:1px solid var(--line);background:#fff;padding:22px;transition:.25s}.product-card:hover{transform:translateY(-5px);box-shadow:0 14px 36px rgba(4,49,83,.12)}.product-card img{width:100%;height:230px;object-fit:contain}.product-card h2{font-size:19px;line-height:1.35}.product-link{color:var(--blue);font-weight:700}.post-card img{width:100%;height:220px;object-fit:contain}@media(max-width:900px){.product-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.product-grid{grid-template-columns:1fr}}
.archive-intro{max-width:760px;margin:0 0 34px}.archive-intro .eyebrow{color:var(--blue)}.archive-intro h2{font-size:32px;line-height:1.25;margin:7px 0 10px}.archive-intro p:last-child{color:var(--muted);margin:0}.solution-case-grid{grid-template-columns:repeat(4,1fr)}.solution-case-grid .post-card{min-height:330px}.knowledge-article-grid{margin-top:28px}.post-card{display:flex;flex-direction:column;min-height:300px;transition:.25s}.post-card:hover{transform:translateY(-5px);box-shadow:0 14px 36px rgba(4,49,83,.1)}.post-card .product-link{margin-top:auto}.card-type{color:var(--cyan);font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase}.knowledge-filters{display:flex;gap:10px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:18px}.knowledge-filters a{padding:9px 18px;border:1px solid var(--line);color:var(--muted);font-weight:700}.knowledge-filters a:hover,.knowledge-filters a.active{background:var(--blue);border-color:var(--blue);color:#fff}.archive-pagination{margin-top:42px}.archive-pagination ul{display:flex;gap:8px;list-style:none;padding:0;margin:0}.archive-pagination a,.archive-pagination span{display:flex;min-width:40px;height:40px;padding:0 12px;align-items:center;justify-content:center;border:1px solid var(--line)}.archive-pagination .current,.archive-pagination a:hover{background:var(--blue);border-color:var(--blue);color:#fff}.archive-empty{padding:28px;background:var(--soft);color:var(--muted)}@media(max-width:1100px){.solution-case-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:900px){.solution-case-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.solution-case-grid{grid-template-columns:1fr}.archive-intro h2{font-size:27px}.knowledge-filters a{flex:1;text-align:center}}
.solution-case-grid .post-card{padding:0;overflow:hidden}.solution-card-image{display:block;background:var(--soft);border-bottom:1px solid var(--line)}.solution-card-image img{display:block;width:100%;height:220px;object-fit:cover}.solution-case-grid .card-type,.solution-case-grid h2,.solution-case-grid p,.solution-case-grid .product-link{margin-left:28px;margin-right:28px}.solution-case-grid .card-type{margin-top:24px}.solution-case-grid .product-link{margin-bottom:26px}
.contact-details{max-width:720px;margin-top:28px;padding:20px 24px;background:var(--soft);border-left:4px solid var(--cyan);display:grid;gap:6px;font-size:15px}.contact-details p{margin:0;display:grid;grid-template-columns:110px 1fr;gap:14px;align-items:center}.contact-details strong{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}.contact-details a{color:var(--blue);font-weight:700}.footer-contact{margin-top:16px;font-size:13px;line-height:1.5}.footer-contact p{margin:5px 0}.footer-contact p:not(.footer-address){display:grid;grid-template-columns:72px 1fr;gap:8px}.footer-contact span{color:#7f909f;text-transform:uppercase;font-size:10px;letter-spacing:.08em}.footer-contact a{color:#d8e4ec}@media(max-width:600px){.contact-details p{grid-template-columns:1fr;gap:1px}}
.about-page-content{max-width:1040px}.about-page-intro{max-width:800px;margin-bottom:36px}.about-page-intro .eyebrow{color:var(--blue)}.about-page-intro h2{font-size:34px;line-height:1.25;margin:8px 0 14px}.about-page-intro p:last-child{color:var(--muted)}.about-business-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.about-business-grid article{padding:30px;border:1px solid var(--line);background:#fff}.about-business-grid article>span{color:var(--cyan);font-size:12px;font-weight:700;letter-spacing:.14em}.about-business-grid h3{font-size:23px;margin:18px 0 12px}.about-business-grid p{font-size:15px;color:var(--muted);margin:0 0 12px}.about-values{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);margin-top:24px}.about-values div{background:var(--soft);padding:22px 26px;display:grid;gap:6px}.about-values strong{color:var(--blue);font-size:13px;text-transform:uppercase;letter-spacing:.1em}.about-values span{font-size:14px;color:var(--muted)}@media(max-width:700px){.about-business-grid,.about-values{grid-template-columns:1fr}.about-page-intro h2{font-size:28px}}
.product-group{margin-top:44px}.product-group+.product-group{margin-top:76px;padding-top:50px;border-top:1px solid var(--line)}.product-group-head{margin-bottom:24px}.product-group-head span{color:var(--blue);font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase}.product-group-head h2{font-size:30px;margin:5px 0 0}.industrial-product-group{background:var(--soft);margin-left:-28px;margin-right:-28px;padding:50px 28px 28px}.industrial-product-group .product-card{max-width:360px}
.email-quote-button{gap:10px;white-space:nowrap}.email-quote-button span{font-size:19px;line-height:1}
.quote-form-section{max-width:900px;margin-top:68px;padding-top:58px;border-top:1px solid var(--line);scroll-margin-top:110px}.quote-form-head{max-width:680px;margin-bottom:30px}.quote-form-head .eyebrow{color:var(--blue)}.quote-form-head h2{font-size:32px;margin:6px 0 8px}.quote-form-head p:last-child{color:var(--muted);font-size:15px}.quote-form{padding:30px;background:var(--soft);border:1px solid var(--line)}.quote-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.quote-form label{display:grid;gap:7px}.quote-form label.full{grid-column:1/-1}.quote-form label span{font-size:13px;font-weight:700;color:#394858}.quote-form input,.quote-form textarea{width:100%;border:1px solid #ccd7e0;background:#fff;padding:12px 13px;font:inherit;color:var(--ink);border-radius:2px}.quote-form input:focus,.quote-form textarea:focus{outline:2px solid rgba(54,185,232,.25);border-color:var(--cyan)}.quote-submit{border:0;cursor:pointer;margin-top:24px;font-size:15px}.quote-honeypot{position:absolute!important;left:-10000px!important;width:1px!important;height:1px!important;overflow:hidden!important}.quote-message{margin:0 0 20px;padding:14px 18px;font-size:14px;font-weight:700}.quote-message.success{background:#e9f8f0;color:#17683c;border-left:4px solid #34a86a}.quote-message.error{background:#fff0f0;color:#9c2e2e;border-left:4px solid #d95050}@media(max-width:700px){.quote-form{padding:22px}.quote-form-grid{grid-template-columns:1fr}.quote-form label.full{grid-column:auto}.email-quote-button{white-space:normal;text-align:center}}

/* v1.1 presentation fixes */
.hero{background:linear-gradient(90deg,rgba(4,32,60,.88),rgba(4,66,98,.38)),url('assets/images/hero-v2.png') center/cover no-repeat}
.footer-brand{display:inline-flex;align-items:center;gap:13px;color:#fff;font-size:28px;font-weight:800;letter-spacing:.16em;margin-bottom:18px}
.footer-mark{width:28px;height:28px;border:3px solid #39bce8;border-radius:50%;position:relative;display:inline-block;flex:0 0 auto}
.footer-mark:before,.footer-mark:after{content:"";position:absolute;background:#39bce8;left:50%;top:50%;transform:translate(-50%,-50%) rotate(45deg)}
.footer-mark:before{width:3px;height:38px}.footer-mark:after{width:38px;height:3px}
.knowledge-image{width:100%;height:330px;object-fit:cover;border-radius:3px;box-shadow:0 18px 45px rgba(6,47,89,.16)}
@media(max-width:600px){.footer-brand{font-size:24px}.knowledge-image{height:240px}}

.knowledge-panel{min-height:370px;background:linear-gradient(135deg,#0d4774,#1595b4);color:#fff;padding:42px 44px;clip-path:polygon(9% 0,100% 0,91% 100%,0 100%);display:flex;flex-direction:column;justify-content:center}.knowledge-panel-head{padding:0 18px 22px;border-bottom:1px solid rgba(255,255,255,.24)}.knowledge-panel-head span{display:block;color:#7edcf1;font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase}.knowledge-panel-head strong{display:block;font-size:24px;line-height:1.3;margin-top:8px}.knowledge-points{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px;padding:26px 18px 0}.knowledge-points>div{display:flex;gap:12px}.knowledge-points b{color:#74d7f3;font-size:13px}.knowledge-points span{display:grid;gap:2px}.knowledge-points strong{font-size:15px}.knowledge-points small{color:#d8edf4;line-height:1.45}.footer-address{font-size:13px;line-height:1.55;max-width:430px;color:#8fa0ad}@media(max-width:900px){.knowledge-panel{clip-path:none;min-height:auto}}@media(max-width:600px){.knowledge-panel{padding:32px 26px}.knowledge-points{grid-template-columns:1fr}.knowledge-panel-head strong{font-size:21px}}
.brand img{display:block;width:190px;height:60px;object-fit:contain;object-position:left center}.footer-logo-dark{display:block;width:230px;max-width:100%;height:auto;margin:0 0 18px}.knowledge-image{display:none!important}


/* Product Knowledge layout refinement - 2026-07-24 */
.knowledge-article-grid{
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
  align-items:start;
  margin-top:30px;
}
.knowledge-article-grid .post-card{
  min-height:0;
  padding:28px;
  border:1px solid #dfe8ee;
  border-top:3px solid transparent;
  background:#fff;
  box-shadow:0 5px 18px rgba(4,49,83,.045);
}
.knowledge-article-grid .post-card:hover{
  border-top-color:var(--cyan);
  transform:translateY(-3px);
  box-shadow:0 14px 34px rgba(4,49,83,.10);
}
.knowledge-article-grid .post-card h2{
  margin:12px 0 0;
  font-size:21px;
  line-height:1.35;
}
.knowledge-article-grid .post-card h2 a{color:var(--ink)}
.knowledge-article-grid .post-card h2 a:hover{color:var(--blue)}
.knowledge-article-grid .post-card p{
  margin:16px 0 0;
  color:var(--muted);
  font-size:15px;
  line-height:1.7;
}
.knowledge-article-grid .post-card .product-link{
  margin-top:22px;
  display:inline-flex;
  align-items:center;
}
.knowledge-filters{
  gap:8px;
  padding-bottom:22px;
}
.knowledge-filters a{
  border-radius:3px;
  padding:10px 20px;
}
.archive-pagination{
  margin-top:34px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
@media(max-width:760px){
  .knowledge-article-grid{grid-template-columns:1fr;gap:16px}
  .knowledge-article-grid .post-card{padding:23px}
  .knowledge-article-grid .post-card h2{font-size:19px}
}

.quote-form-section{max-width:900px;margin-top:68px;padding-top:58px;border-top:1px solid var(--line);scroll-margin-top:110px}.quote-form-head{max-width:680px;margin-bottom:30px}.quote-form-head .eyebrow{color:var(--blue)}.quote-form-head h2{font-size:32px;margin:6px 0 8px}.quote-form-head p:last-child{color:var(--muted);font-size:15px}.quote-form{padding:30px;background:var(--soft);border:1px solid var(--line)}.quote-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.quote-form label{display:grid;gap:7px}.quote-form label.full{grid-column:1/-1}.quote-form label span{font-size:13px;font-weight:700;color:#394858}.quote-form input,.quote-form textarea{width:100%;border:1px solid #ccd7e0;background:#fff;padding:12px 13px;font:inherit;color:var(--ink);border-radius:2px}.quote-form input:focus,.quote-form textarea:focus{outline:2px solid rgba(54,185,232,.25);border-color:var(--cyan)}.quote-submit{border:0;cursor:pointer;margin-top:24px;font-size:15px}.quote-honeypot{position:absolute!important;left:-10000px!important;width:1px!important;height:1px!important;overflow:hidden!important}.quote-message{margin:0 0 20px;padding:14px 18px;font-size:14px;font-weight:700}.quote-message.success{background:#e9f8f0;color:#17683c;border-left:4px solid #34a86a}.quote-message.error{background:#fff0f0;color:#9c2e2e;border-left:4px solid #d95050}@media(max-width:700px){.quote-form{padding:22px}.quote-form-grid{grid-template-columns:1fr}.quote-form label.full{grid-column:auto}.email-quote-button{white-space:normal;text-align:center}}

/* v1.1 presentation fixes */
.hero{background:linear-gradient(90deg,rgba(4,32,60,.88),rgba(4,66,98,.38)),url('assets/images/hero-v2.png') center/cover no-repeat}
.footer-brand{display:inline-flex;align-items:center;gap:13px;color:#fff;font-size:28px;font-weight:800;letter-spacing:.16em;margin-bottom:18px}
.footer-mark{width:28px;height:28px;border:3px solid #39bce8;border-radius:50%;position:relative;display:inline-block;flex:0 0 auto}
.footer-mark:before,.footer-mark:after{content:"";position:absolute;background:#39bce8;left:50%;top:50%;transform:translate(-50%,-50%) rotate(45deg)}
.footer-mark:before{width:3px;height:38px}.footer-mark:after{width:38px;height:3px}
.knowledge-image{width:100%;height:330px;object-fit:cover;border-radius:3px;box-shadow:0 18px 45px rgba(6,47,89,.16)}
@media(max-width:600px){.footer-brand{font-size:24px}.knowledge-image{height:240px}}

.knowledge-panel{min-height:370px;background:linear-gradient(135deg,#0d4774,#1595b4);color:#fff;padding:42px 44px;clip-path:polygon(9% 0,100% 0,91% 100%,0 100%);display:flex;flex-direction:column;justify-content:center}.knowledge-panel-head{padding:0 18px 22px;border-bottom:1px solid rgba(255,255,255,.24)}.knowledge-panel-head span{display:block;color:#7edcf1;font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase}.knowledge-panel-head strong{display:block;font-size:24px;line-height:1.3;margin-top:8px}.knowledge-points{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px;padding:26px 18px 0}.knowledge-points>div{display:flex;gap:12px}.knowledge-points b{color:#74d7f3;font-size:13px}.knowledge-points span{display:grid;gap:2px}.knowledge-points strong{font-size:15px}.knowledge-points small{color:#d8edf4;line-height:1.45}.footer-address{font-size:13px;line-height:1.55;max-width:430px;color:#8fa0ad}@media(max-width:900px){.knowledge-panel{clip-path:none;min-height:auto}}@media(max-width:600px){.knowledge-panel{padding:32px 26px}.knowledge-points{grid-template-columns:1fr}.knowledge-panel-head strong{font-size:21px}}
.brand img{display:block;width:190px;height:60px;object-fit:contain;object-position:left center}.footer-logo-dark{display:block;width:230px;max-width:100%;height:auto;margin:0 0 18px}.knowledge-image{display:none!important}