/* Approved compact header and optional review compositions share existing content and assets. */
.home.hsi-home-impact.hsi-header-study .site-header{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;gap:24px;height:116px;padding:36px var(--space) 0;align-items:center}
.home.hsi-home-impact.hsi-header-study .header-brand-lockup{margin:0;gap:20px;min-width:0}
.home.hsi-home-impact.hsi-header-study .desktop-nav{justify-self:center;gap:clamp(18px,1.8vw,32px);font-size:18px;line-height:1.35;direction:ltr}
.home.hsi-home-impact.hsi-header-study .desktop-nav a{display:flex;align-items:center;min-height:48px;transform:none;white-space:nowrap}
.home.hsi-home-impact.hsi-header-study .site-header>.language-switcher{margin:0}
.home.hsi-home-impact.hsi-header-study .site-header .language-switcher summary{font-size:16px}
.home.hsi-home-impact.hsi-header-study .menu-toggle{justify-self:end;flex-shrink:0}
.home.hsi-home-impact.hsi-header-study-compact .site-header{height:108px;gap:24px}
.home.hsi-home-impact.hsi-header-study-compact .identity-logo{width:auto;height:50px}
.home.hsi-home-impact.hsi-header-study-compact .header-inquiry{gap:12px;color:#171b1d;background:#e9b43a;padding:0 18px}
.home.hsi-home-impact.hsi-header-study-compact .header-inquiry:hover{background:#202426;color:#fff}
.home.hsi-home-impact.hsi-header-study-signature .site-header{height:136px;background:#1a2024;color:#fff}
.home.hsi-home-impact.hsi-header-study-signature .header-brand-lockup .identity-logo{width:auto;height:70px}
.header-study-signature{min-width:0;display:flex;flex-direction:column;gap:4px;max-width:400px}
.header-study-signature strong{font-size:36px;font-weight:500;line-height:1.05;letter-spacing:-.03em}
.header-study-signature span{font-size:16px;line-height:1.4}
.home.hsi-home-impact.hsi-header-study-signature .desktop-nav{justify-self:center}
.home.hsi-home-impact.hsi-header-study-signature .desktop-nav a:hover,.home.hsi-home-impact.hsi-header-study-signature .language-switcher summary:hover{color:#e9b43a}
.home.hsi-home-impact.hsi-header-study-signature .header-inquiry{background:#e9b43a;color:#171b1d;padding:0 20px;gap:16px}
.home.hsi-home-impact.hsi-header-study-signature .desktop-nav .header-inquiry:hover{color:#171b1d;background:#fff}
.home.hsi-home-impact.hsi-header-study-signature .menu-toggle span{background:#e9b43a}
.home.hsi-home-impact.hsi-header-study-signature .language-options{background:#fff;color:#202426}
.home.hsi-home-impact.hsi-header-study-signature .site-header a:focus-visible,.home.hsi-home-impact.hsi-header-study-signature .site-header summary:focus-visible,.home.hsi-home-impact.hsi-header-study-signature .menu-toggle:focus-visible{outline-color:#e9b43a}
.home.hsi-home-impact.hsi-header-study-brands .site-header{grid-template-columns:148px minmax(0,1fr) auto auto auto;height:128px;padding-left:0;gap:24px;background:#eef0f0}
.home.hsi-home-impact.hsi-header-study-brands .header-brand-lockup{height:100%;align-self:stretch;justify-content:center;background:#23282c}
.home.hsi-home-impact.hsi-header-study-brands .header-brand-lockup .identity-logo{width:auto;height:62px}
.header-study-brands{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:center;gap:24px;direction:ltr}
.header-study-brands a{min-width:0;min-height:72px;display:flex;flex-direction:column;justify-content:center;gap:8px;align-items:flex-start}
.header-study-brands img{width:auto;height:28px;max-width:100%;object-fit:contain;object-position:left center}
.header-study-brands a>span{display:flex;align-items:flex-start;gap:10px;min-width:0;max-width:100%;font-size:16px;line-height:1.3}
.header-study-brand-field{min-width:0;overflow-wrap:anywhere;hyphens:auto}
.header-study-brands svg{width:16px;height:16px;margin-top:2px;color:#775600}
.header-study-brands a:hover{color:#775600}
.header-review-controls{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);display:flex;align-items:center;justify-content:center;gap:8px 24px;width:max-content;max-width:calc(100% - 32px);padding:8px 20px;background:#fff;color:#202426;z-index:50;direction:ltr;text-align:left;font:16px/1.4 Barlow,'Microsoft YaHei',sans-serif;border:2px solid #e9b43a}
.header-review-controls a{display:flex;align-items:center;min-height:40px;white-space:nowrap}
.header-review-controls a[aria-current=page]{color:#775600;font-weight:700;text-decoration:underline;text-underline-offset:6px;text-decoration-thickness:3px}
.header-review-controls a:hover{color:#775600}
.header-review-controls a:focus-visible{outline:3px solid #775600;outline-offset:3px}
@media(max-width:1400px){
 .home.hsi-home-impact.hsi-header-study .site-header{gap:18px}
 .home.hsi-home-impact.hsi-header-study .desktop-nav{gap:20px}
 .home.hsi-home-impact.hsi-header-study-brands .site-header{grid-template-columns:116px minmax(0,1fr) auto auto auto}
 .header-study-brands{gap:20px}
 .header-study-brands img{height:24px}
 .header-study-signature strong{font-size:32px}
}
@media(max-width:1279px){
 .home.hsi-home-impact.hsi-header-study .site-header{grid-template-columns:minmax(0,1fr) auto auto}
 .home.hsi-home-impact.hsi-header-study .desktop-nav{display:none}
 .home.hsi-home-impact.hsi-header-study-brands .site-header{grid-template-columns:100px minmax(0,1fr) auto auto}
 .header-study-brands img{height:28px}
}
@media(min-width:1280px){.home.hsi-home-impact.hsi-header-study .desktop-nav{display:flex}}
@media(max-width:760px){
 .home.hsi-home-impact.hsi-header-study .site-header{height:144px;padding-top:72px;gap:16px}
 .home.hsi-home-impact.hsi-header-study .header-brand-lockup .identity-logo{height:48px;width:auto}
 .home.hsi-home-impact.hsi-header-study .header-contact{min-height:72px}
 .home.hsi-home-impact.hsi-header-study .header-brand-lockup{gap:14px}
 .home.hsi-home-impact.hsi-header-study-signature .site-header{height:158px}
 .header-study-signature strong{font-size:26px}
 .header-study-signature span{font-size:16px;max-width:270px}
 .home.hsi-home-impact.hsi-header-study-brands .site-header{height:auto;min-height:204px;grid-template-columns:minmax(0,1fr) auto auto;padding-left:var(--space);padding-bottom:0}
 .home.hsi-home-impact.hsi-header-study-brands .header-brand-lockup{height:68px;background:#23282c;justify-content:center;width:76px}
 .header-study-brands{grid-column:1/-1;grid-row:2;gap:24px;align-self:stretch;padding:16px 0 18px}
 .header-study-brands a{min-height:58px;justify-content:flex-start;gap:10px}
 .header-study-brands img{height:25px;max-width:100%}
 .header-study-brands a>span{font-size:16px;gap:8px}
 .header-study-brands svg{margin-top:2px}
 .header-review-controls{flex-wrap:wrap;gap:0 16px;padding:6px 12px;bottom:8px;width:calc(100% - 16px);max-width:600px}
 .header-review-controls a{font-size:14px;min-height:36px}
}
@media(max-width:480px){
 .home.hsi-home-impact.hsi-header-study .site-header{gap:10px}
 .home.hsi-home-impact.hsi-header-study .site-header .language-switcher summary{font-size:16px}
 .header-study-signature strong{font-size:24px}
 .header-study-signature span{display:none}
 .home.hsi-home-impact.hsi-header-study-signature .header-brand-lockup{gap:12px}
 .home.hsi-home-impact.hsi-header-study-signature .header-brand-lockup .identity-logo{height:50px}
 .header-study-brands img{height:22px}
}
@media(prefers-reduced-motion:reduce){.hsi-header-study .desktop-nav a{transition:none}}