/* Scoped /about/ presentation. Existing global navigation and frozen pages are unchanged. */
.ab-page{font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif}
.ab-page *{box-sizing:border-box}
.ab-page h1,.ab-page h2,.ab-page h3{text-wrap:balance}
.ab-page figure{margin:0}.ab-page img{display:block;width:100%;height:auto}
.ab-page a{color:inherit;text-decoration:none}.ab-page a:focus-visible{outline:3px solid var(--v3-orange);outline-offset:5px}
.ab-page [id^="ab-"]{scroll-margin-top:105px}
.ab-hero{padding:116px 0 22px;background:var(--v3-black);color:#fff}
.ab-breadcrumb{display:flex;gap:10px;font-size:11px;color:#b6b0a9;margin-bottom:34px}
.ab-hero-copy{display:grid;grid-template-columns:1.18fr .82fr;gap:65px;align-items:end;padding-bottom:30px}
.ab-hero .pb-eyebrow{color:var(--v3-orange);margin:0 0 14px}
.ab-hero h1{font-size:clamp(36px,4.2vw,60px);line-height:1.22;letter-spacing:-.03em;margin:0;color:#fff}
.ab-subtitle{font-size:clamp(17px,1.65vw,24px);line-height:1.7;margin:17px 0 0;color:#e8e2dc}
.ab-hero-lead{font-size:14px;line-height:1.9;color:#bdb7b0;margin:0 0 17px;max-width:450px}
.ab-light-link{display:inline-flex;gap:25px;align-items:center;font-size:12px;line-height:1.7;padding:7px 0;border-bottom:1px solid #60584f;color:#ded7cf!important}
.ab-light-link span{color:var(--v3-orange)}
.ab-hero-photo img{aspect-ratio:4000/1457;object-fit:contain;background:#252422}
.ab-hero-photo figcaption{font-size:10px;line-height:1.8;color:#a49d94;margin-top:12px}
.ab-problem-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:45px;align-items:center}
.ab-problem-list>a{display:grid;grid-template-columns:25px 1fr 20px;gap:12px;border-top:1px solid var(--v3-line);padding:25px 0}
.ab-problem-list>a:last-child{border-bottom:1px solid var(--v3-line)}
.ab-problem-list .sb-number{padding-top:5px}.ab-problem-list h3{font-size:20px}.ab-problem-list p{font-size:13px;line-height:1.85;color:var(--v3-text);margin-top:10px}
.ab-arrow{font-size:22px;color:var(--v3-orange-dark)}
.ab-problem-list>a:hover h3{color:var(--v3-orange-dark)}
.ab-photo img{aspect-ratio:4/3;object-fit:contain;background:var(--v3-paper)}
.ab-photo figcaption{font-size:10px;line-height:1.85;color:var(--v3-muted);padding-top:10px}
.ab-dark{background:var(--v3-black);color:#fff}
.ab-dark .sb-heading h2,.ab-dark h3{color:#fff}.ab-dark .sb-heading>p,.ab-dark article p{color:#bdb6ae}
.ab-dark .pb-eyebrow,.ab-dark .sb-number{color:var(--v3-orange)}
.ab-capability-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 55px}
.ab-capability-grid article{display:grid;grid-template-columns:36px 1fr;gap:17px;padding:30px 0;border-top:1px solid #393531}
.ab-capability-grid .sb-number{padding-top:6px}.ab-capability-grid h3{font-size:27px}.ab-capability-grid p{max-width:470px}
.ab-capability-grid a{margin-top:17px}.ab-dark .sb-note{color:#979087;border-top:1px solid #393531;padding-top:18px}
.ab-products{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.ab-products article{min-width:0;display:flex;flex-direction:column;background:#fff}
.ab-products .ab-photo img{background:#e5e2dc}
.ab-product-copy{display:flex;flex-direction:column;flex:1;padding:25px}
.ab-product-copy small{font-size:11px;color:var(--v3-orange-dark);line-height:1.7}.ab-product-copy h3{margin-top:9px;font-size:23px;line-height:1.5}
.ab-product-copy p{font-size:12px!important;margin-bottom:22px!important}
.ab-product-links{margin-top:auto;border-top:1px solid var(--v3-line);padding-top:10px;min-height:86px}
.ab-product-links a{display:flex;justify-content:space-between;gap:18px;padding:8px 0;font-size:12px;font-weight:550;line-height:1.7}
.ab-product-links span{color:var(--v3-orange-dark)}.ab-product-links a:hover{color:var(--v3-orange-dark)}
.ab-custom{display:grid;grid-template-columns:1.2fr .8fr;gap:50px;border-top:2px solid var(--v3-orange);background:#fff;padding:30px;margin-top:26px;align-items:center}
.ab-custom small{font-size:11px;color:var(--v3-orange-dark)}.ab-custom h3{font-size:24px;margin:8px 0 12px}.ab-custom p{font-size:12px;line-height:1.85;color:var(--v3-text)}
.ab-custom ul{display:flex;flex-wrap:wrap;gap:9px;list-style:none;padding:0;margin:0 0 18px}.ab-custom li{padding:7px 10px;background:var(--v3-paper);font-size:11px;line-height:1.7}
.ab-all-products{margin-top:24px}
.ab-manufacturing-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:stretch}
.ab-evidence{display:flex;flex-direction:column;min-height:340px;background:#eeebe5;border:1px solid #d7d1c9;padding:23px;color:#6d665d}
.ab-evidence>small{font-size:10px;color:var(--v3-orange-dark)}.ab-evidence>div{display:flex;flex:1;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:25px 20px}
.ab-evidence>div>span{font-size:30px;color:#b1a89b;margin-bottom:20px}.ab-evidence strong{font-size:17px;line-height:1.6;font-weight:550}.ab-evidence p{font-size:11px;line-height:1.85;margin-top:12px;max-width:290px}.ab-evidence figcaption{font-size:10px;line-height:1.7;border-top:1px solid #d7d1c9;padding-top:14px}
.ab-manufacturing-copy ol{list-style:none;padding:0;margin:0}.ab-manufacturing-copy li{display:grid;grid-template-columns:26px 1fr;gap:12px;border-bottom:1px solid var(--v3-line);padding:0 0 18px;margin-bottom:18px}
.ab-manufacturing-copy .sb-number{padding-top:5px}.ab-manufacturing-copy p{font-size:12px;line-height:1.8;margin-top:9px;color:var(--v3-text)}
.ab-identity-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:25px}.ab-identity-grid article{padding:32px;background:#fff}
.ab-identity-grid small{font-size:11px;color:var(--v3-orange-dark)}.ab-identity-grid h3{font-size:clamp(22px,2.4vw,32px);margin-top:13px;line-height:1.5}
.ab-identity-grid .ab-manufacturer{border-top:4px solid var(--v3-orange)}.ab-identity-grid .ab-service{border-top:1px solid #aaa298}
.ab-brand-name{display:flex;flex-wrap:wrap;align-items:baseline;gap:18px;padding:20px 0;margin-top:14px;border-block:1px solid var(--v3-line)}.ab-brand-name strong{font-size:24px;letter-spacing:.08em}.ab-brand-name span{font-size:12px;letter-spacing:.1em;color:var(--v3-muted)}
.ab-identity-grid article p{font-size:12px;line-height:1.9}.ab-relationship{display:block;padding-top:18px;margin-top:25px;border-top:1px solid var(--v3-line);font-size:11px;color:var(--v3-muted)}
.ab-contact-link{display:block;width:fit-content;margin-top:16px;color:#c5bcb2!important;font-size:12px;padding-block:6px;border-bottom:1px solid #6d5c4c}.ab-contact-link span{margin-left:20px;color:var(--v3-orange)}
.changhe-about-brand .v3-footer__contact{display:none}.changhe-about-brand .v3-footer__top{grid-template-columns:1fr 1fr}
@media(max-width:1050px){.ab-hero-copy{gap:30px}.ab-problem-grid,.ab-manufacturing-grid{gap:30px}.ab-products{gap:15px}.ab-product-copy{padding:20px}.ab-product-copy h3{font-size:21px}.ab-custom{gap:28px}.ab-identity-grid article{padding:26px}}
@media(max-width:700px){
 .ab-page [id^="ab-"]{scroll-margin-top:95px}.ab-hero{padding:94px 0 18px}.ab-breadcrumb{margin-bottom:27px}
 .ab-hero-copy,.ab-problem-grid,.ab-capability-grid,.ab-products,.ab-custom,.ab-manufacturing-grid,.ab-identity-grid{grid-template-columns:1fr}
 .ab-hero-copy{gap:20px;padding-bottom:25px}.ab-hero h1{font-size:39px}.ab-subtitle{font-size:19px;line-height:1.7;margin-top:14px}.ab-hero-lead{font-size:12px;line-height:1.85;margin-bottom:12px}
 .ab-hero-photo img{aspect-ratio:16/10;object-fit:cover;object-position:59% 70%}.ab-hero-photo figcaption{font-size:9px}
 .ab-problem-grid{gap:25px}.ab-problem-list>a{padding:20px 0;gap:9px}.ab-problem-list p{font-size:12px}.ab-problem-list h3{font-size:21px}
 .ab-capability-grid article{padding:23px 0;grid-template-columns:30px 1fr;gap:13px}.ab-capability-grid h3{font-size:25px}.ab-capability-grid p{font-size:12px!important}
 .ab-products{gap:23px}.ab-product-copy{padding:22px}.ab-product-copy h3{font-size:24px}.ab-product-links{min-height:0}.ab-custom{padding:23px;gap:24px}.ab-custom h3{font-size:24px}
 .ab-manufacturing-grid{gap:26px}.ab-evidence{min-height:280px;padding:19px}.ab-evidence>div{padding:23px 10px}.ab-evidence strong{font-size:16px}
 .ab-identity-grid{gap:20px}.ab-identity-grid article{padding:25px}.ab-identity-grid h3{font-size:26px}.ab-brand-name{gap:9px}.ab-brand-name strong{font-size:22px}.ab-brand-name span{font-size:10px}
 .changhe-about-brand .v3-footer__top{grid-template-columns:1fr}
}