.header-inner { gap: 20px; }
.header-controls { display: flex; align-items: center; gap: 10px; flex-shrink: 0; position: relative; z-index: 104; }
.main-nav { margin-inline-start: auto; gap: 18px; }
.language-picker { position: relative; border: 0; flex-shrink: 0; }
.language-picker summary { display: flex; align-items: center; gap: 8px; padding: 10px 11px; border: 1px solid rgba(255,255,255,.25); border-radius: 12px; font-size: 13px; line-height: 1.3; color: #fff; white-space: nowrap; direction: ltr; }
.language-picker summary::before,.language-picker summary::after { display: none; }
.language-picker summary span { font-size: 11px; }
.language-picker[open] summary { background: rgba(139,211,255,.14); }
.site-header.scrolled .language-picker summary { color: var(--ink); border-color: var(--line); }
.language-picker nav { position: absolute; inset-inline-end: 0; top: calc(100% + 12px); min-width: 178px; max-height: calc(100svh - 110px); overflow-y: auto; padding: 8px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 20px 60px rgba(3,15,33,.22); }
.language-picker nav a { display: block; padding: 10px 14px; color: var(--ink-soft); font-size: 15px; line-height: 1.5; text-align: start; text-decoration: none; border-radius: 9px; unicode-bidi: isolate; }
.language-picker nav a:hover,.language-picker nav a:focus-visible { color: var(--ink); background: var(--paper-soft); }
.language-picker nav a[aria-current="true"] { background: #e7f4f8; color: #0b567f; font-weight: 750; }
body.info-page .site-header .language-picker summary,body.info-page .site-header.scrolled .language-picker summary { color: #fff; border-color: rgba(255,255,255,.25); }
.brand,.brand-text { direction: ltr; }
.main-nav a { white-space: nowrap; }
h1,h2,h3 { overflow-wrap: anywhere; }
.contact-form input[type="email"] { direction: ltr; text-align: start; }
.hero h1 { font-size: clamp(40px,4.65vw,62px); }
:lang(zh-Hans) { line-height: 1.75; }
html[lang="zh-Hans"] .hero h1 { letter-spacing: 0; line-height: 1.2; }
html[lang="zh-Hans"] .research-hero h1 { line-height: 1.2; letter-spacing: 0; }
html[dir="rtl"] body { font-family: Tahoma,Arial,ui-sans-serif,system-ui,sans-serif; line-height: 1.85; }
html[dir="rtl"] h1,html[dir="rtl"] h2,html[dir="rtl"] h3,html[dir="rtl"] .eyebrow,html[dir="rtl"] .brand-text strong { letter-spacing: normal; }
html[dir="rtl"] .eyebrow { text-transform: none; }
html[dir="rtl"] .service-card li { padding-left: 0; padding-right: 24px; }
html[dir="rtl"] .service-card li::before { left: auto; right: 2px; }
html[dir="rtl"] summary:not(.language-picker summary) { padding-left: 52px; padding-right: 0; }
html[dir="rtl"] summary:not(.language-picker summary)::before,html[dir="rtl"] summary:not(.language-picker summary)::after { right: auto; left: 4px; }
html[dir="rtl"] details:not(.language-picker) p { padding-right: 0; padding-left: 50px; }
html[dir="rtl"] .process-list li { padding-right: 0; padding-left: 28px; }
html[dir="rtl"] .process-list li::before { left: auto; right: 0; }
html[dir="rtl"] .report-outline ol { padding-left: 0; padding-right: 25px; }
html[dir="rtl"] .report-outline li { padding-left: 0; padding-right: 8px; }
html[dir="rtl"] .info-card ul { padding-left: 0; padding-right: 22px; }
html[dir="rtl"] .contact-form .is-loading { padding-right: 22px; padding-left: 54px; }
html[dir="rtl"] .contact-form .is-loading::after { right: auto; left: 22px; }
html[dir="rtl"] .research-hero h1 { line-height: 1.35; }
html[dir="rtl"] .hero h1 { line-height: 1.35; }
html[dir="rtl"] .section-heading h2 { line-height: 1.4; }
html[dir="rtl"] bdi { unicode-bidi: isolate; }
@media(max-width:1100px) {
 .header-inner { gap: 12px; }
 .menu-toggle { display: block; position: relative; z-index: 103; }
 .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
 .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
 .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
 .main-nav { position: fixed; z-index: 102; inset: 84px 14px auto; display: grid; gap: 0; margin: 0; padding: 14px; max-height: calc(100svh - 106px); overflow-y: auto; border: 1px solid var(--line); border-radius: 22px; background: #fff; box-shadow: 0 30px 80px rgba(3,15,33,.28); opacity: 0; transform: translateY(-12px); pointer-events: none; transition: opacity .2s ease,transform .2s ease; }
 .main-nav.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
 .main-nav a,.site-header.scrolled .main-nav a,body.info-page .site-header .main-nav a { padding: 13px 14px; color: var(--ink-soft); border-bottom: 1px solid rgba(15,23,42,.08); font-size: 15px; white-space: normal; }
 .main-nav a:nth-last-child(2) { border-bottom: 0; }
 .main-nav .nav-action,.site-header.scrolled .main-nav .nav-action,body.info-page .site-header .main-nav .nav-action { margin-top: 12px; padding: 15px 16px; color: #fff; background: var(--ink); border: 0; border-radius: 999px; text-align: center; }
 body.nav-open { overflow: hidden; }
 body.nav-open::before { content: ""; position: fixed; z-index: 99; inset: 0; background: rgba(3,10,22,.58); }
}
@media(max-width:760px) {
 .header-inner { gap: 8px; }
 .header-controls { gap: 6px; }
 .language-picker summary { padding: 10px 8px; font-size: 12px; }
 .main-nav { top: 82px; }
 .hero h1 { font-size: clamp(30px,8vw,40px); }
 html[dir="rtl"] .hero h1 { font-size: clamp(29px,7.8vw,37px); }
 html[dir="rtl"] .research-hero h1 { font-size: clamp(32px,8.5vw,42px); }
 .hero-actions .button { max-width: 100%; min-height: 52px; height: auto; padding-top: 12px; padding-bottom: 12px; }
 .deliverable-summary .button { white-space: normal; height: auto; padding-top: 13px; padding-bottom: 13px; }
 .brand-text strong { font-size: 12px; }
 .brand-text small { font-size: 9px; }
 .brand img { width: 42px; height: 48px; }
 .brand { gap: 9px; }
}