/* Local fonts and a language menu shared by the translated editions. */
.language-switch{border:0;padding:0;display:block;font-size:16px;line-height:1.5;white-space:normal;min-width:0}
.language-picker{position:relative;min-width:70px;max-width:100%}
.language-picker>summary{display:flex;align-items:center;gap:9px;padding:10px 12px;border:1px solid var(--line);min-height:46px;font-size:16px;line-height:1.4;cursor:pointer;list-style:none;white-space:nowrap}
.language-picker>summary::-webkit-details-marker{display:none}
.language-picker>summary::after{content:'⌄';font-size:18px;line-height:1;flex-shrink:0}
.language-picker>summary svg{width:18px;height:18px;flex-shrink:0}
.language-picker[open]>summary{background:var(--soft)}
.language-picker:not([open]) .language-options{display:none!important}
.language-options{position:absolute;inset-inline-end:0;top:100%;list-style:none;margin:6px 0 0;padding:8px;background:var(--paper);color:var(--ink);border:1px solid var(--line);box-shadow:0 12px 30px #17221818;min-width:220px;max-width:calc(100vw - 36px);z-index:90}
.language-options li{margin:0;padding:0}
.language-options a,.language-options [aria-current]{display:flex;align-items:center;gap:15px;justify-content:space-between;min-height:46px;padding:10px 14px;font-size:18px;line-height:1.5;text-decoration:none;white-space:normal;letter-spacing:0;border-bottom:0}
.language-options a:hover,.language-options [aria-current]{background:var(--soft,var(--wash))}
.language-options [aria-current]::after{content:'✓';color:var(--ink)}
.language-picker :is([lang='ru'],[lang='en'],[lang='es']){font-family:Manrope,Arial,sans-serif}
.language-picker [lang='zh-Hans']{font-family:'Noto Sans SC Variable',Manrope,Arial,sans-serif}
.language-picker [lang='ja']{font-family:'Noto Sans JP Variable',Manrope,Arial,sans-serif}
.language-picker [lang='hi']{font-family:'Noto Sans Devanagari Variable',Manrope,Arial,sans-serif}
.language-picker [lang='ar']{font-family:'Noto Sans Arabic Variable',Manrope,Arial,sans-serif}
html[lang='zh-Hans'] body{font-family:'Noto Sans SC Variable',Manrope,Arial,sans-serif;--display:'Noto Sans SC Variable',Arial,sans-serif}
html[lang='ja'] body{font-family:'Noto Sans JP Variable',Manrope,Arial,sans-serif;--display:'Noto Sans JP Variable',Arial,sans-serif}
html[lang='hi'] body{font-family:'Noto Sans Devanagari Variable',Manrope,Arial,sans-serif;--display:'Noto Sans Devanagari Variable',Arial,sans-serif}
html[lang='ar'] body{font-family:'Noto Sans Arabic Variable',Manrope,Arial,sans-serif;--display:'Noto Sans Arabic Variable',Arial,sans-serif;direction:rtl;text-align:start;line-height:1.9}
html:is([lang='zh-Hans'],[lang='ja'],[lang='hi'],[lang='ar']) :is(h1,h2,h3){font-family:inherit;letter-spacing:0;font-weight:600}
html:is([lang='zh-Hans'],[lang='ja']) body{line-height:1.85;line-break:strict;overflow-wrap:anywhere}
html:is([lang='zh-Hans'],[lang='ja']) :is(.hero h1,.page-top h1,.page-hero h1){line-height:1.4}
html:is([lang='zh-Hans'],[lang='ja'],[lang='hi'],[lang='ar']) :is(.hero h1,.page-top h1,.page-hero h1){letter-spacing:0}
html[lang='hi'] :is(.hero h1,.page-top h1,.page-hero h1){line-height:1.5}
html[lang='ar'] :is(.hero h1,.page-top h1,.page-hero h1){line-height:1.65}
html:is([lang='hi'],[lang='ar']) :is(p,li,.lead,.question-row,.brand small){line-height:1.9}
.brand small{overflow-wrap:anywhere}
html:is([lang='zh-Hans'],[lang='ja'],[lang='hi'],[lang='ar']) .eyebrow{font-family:inherit}
html[lang='ar'] :is(.brand-name,.header-phone,a[dir='ltr'],bdi[dir='ltr']){direction:ltr;unicode-bidi:isolate}
html[lang='ar'] bdi[dir='ltr']{white-space:nowrap}
html[lang='ar'] .brand-name{font-family:Manrope,Arial,sans-serif}
html[lang='ar'] :is(.contact-form input[name='email'],.contact-form input[name='contact']){direction:ltr;text-align:start}
html[lang='ar'] :is(.question-row,.check,.settings-link,.price-table th,.legal-document td,.legal-document th){text-align:start}
html[lang='ar'] :is(ul,ol){padding-inline-start:24px;padding-inline-end:0}
html[lang='ar'] :is(.language-options,.question-list,.footer-main ul,.related-list){padding:0}
html[lang='ar'] .language-options{padding:8px}
html[lang='ar'] .service-arrow{transform:scaleX(-1)}
html[lang='ar'] .theme-engineering .service-card{border-left:1px solid #b9b9ad;border-right:5px solid #956108}
html[lang='ar'] .theme-intellect .service-card{padding:34px 0 34px 36px}
html[lang='ar'] .theme-intellect .service-card:nth-child(even){padding-left:36px;padding-right:36px;border-left:0;border-right:1px solid var(--line)}
html[lang='ar'] .theme-intellect .request-callout{border-left:0;border-right:8px solid var(--accent)}
html[lang='ar'] .theme-flot .hero-copy{padding-inline:0 56px}
html[lang='ar'] .theme-agro .hero-copy{border-left:0;border-right:5px solid var(--accent)}
html[lang='ar'] .theme-rail .service-card{padding-left:30px;padding-right:0}
html[lang='ar'] .theme-rail .service-card:nth-child(even){padding-left:30px;padding-right:30px}
html[lang='ar'] .theme-dna .hero-picture img{border-radius:24px 160px 24px 24px}
html:is([lang='zh-Hans'],[lang='ja'],[lang='hi'],[lang='ar']) .theme-avia :is(.hero-index,.section-head .eyebrow){font-family:inherit}
@media(min-width:851px){html[lang='ar'] .theme-avia .hero-copy{padding-inline:0 42px}}
:is(.language-picker,.contact-form,.question-builder,.legal-document,.prose,.detail-aside,.hero-copy,.brand>span){min-width:0}
/* A clipped bot-trap stays hidden without expanding an RTL page off canvas. */
.honeypot{position:absolute;left:auto;inset-inline-start:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);clip-path:inset(50%);white-space:nowrap}
.language-picker:focus-within>summary{border-color:var(--accent)}
.privacy-panel{font-size:16px;line-height:1.7}
.privacy-panel :is(p,summary,.privacy-message,.privacy-help){font-size:16px;line-height:1.75}
.privacy-panel h2{font-size:24px;line-height:1.5;font-family:inherit}
.privacy-actions button{font-size:16px;min-height:48px}
:is(.privacy-help,.file-picker,.file-summary,.file-selection){font-size:16px;line-height:1.65}
@media(max-width:1100px){
 .header-inner,.header-row{position:relative;justify-content:space-between}
 .header-phone{display:none}
 .menu-toggle{display:block}
 :is(.site-nav,#navigation,#modern-nav){display:none;position:absolute;top:100%;inset-inline:0;z-index:70;padding:20px 24px;background:var(--paper);color:var(--ink);border:1px solid var(--line);box-shadow:0 15px 25px #1d292710}
 :is(.site-nav.is-open,.site-nav[data-open="true"],#navigation.is-open,#modern-nav.is-open){display:flex;flex-direction:column;align-items:stretch;gap:0}
 :is(.site-nav,#navigation,#modern-nav)>a{display:block;padding:10px 0;min-height:44px;white-space:normal;font-size:18px}
 :is(.site-nav,#navigation,#modern-nav) .language-switch{border:0;border-top:1px solid var(--line);margin-top:10px;padding-top:14px;width:100%}
 .language-picker{width:100%}
 .language-picker>summary{justify-content:flex-start;width:fit-content;max-width:100%}
 .language-options{position:static;margin-top:8px;min-width:0;max-width:100%;box-shadow:none}
}
@media(max-width:850px){html[lang='ar'] .theme-flot .hero-copy{padding-inline:0 28px}}
@media(max-width:560px){
 html:is([lang='zh-Hans'],[lang='ja']) :is(.hero h1,.page-top h1,.page-hero h1){font-size:36px;line-height:1.4}
 html[lang='hi'] :is(.hero h1,.page-top h1,.page-hero h1){font-size:36px;line-height:1.5}
 html[lang='ar'] :is(.hero h1,.page-top h1,.page-hero h1){font-size:37px;line-height:1.65}
 html:is([lang='hi'],[lang='ar']) :is(.service-card h3,.article-card h3){font-size:26px;line-height:1.5}
 html[lang='ar'] .theme-intellect .service-card:nth-child(even){padding-left:0;padding-right:0;border-right:0}
 html[lang='ar'] .theme-flot .hero-copy{padding-inline:0 20px}
 html[lang='ar'] .theme-rail .service-card:nth-child(even){padding-left:30px;padding-right:0}
 .language-options :is(a,[aria-current]){min-height:48px;font-size:18px}
}

/* Retain earlier site themes across scripts and RTL. */
html:is([lang='zh-Hans'],[lang='ja'],[lang='hi'],[lang='ar']) em{font-family:inherit}
.wordmark{font-family:Arial,Helvetica,sans-serif;direction:ltr;unicode-bidi:isolate}
.technical .footer-links,.museum .footer-links,.technical .footer-links button,.museum .footer-links button{font-size:16px}
html[lang='ar'] :is(.chapter,.index,.kicker){font-family:inherit;letter-spacing:0}
html[lang='ar'] :is(.footer-links button,.price-table th,.price-table td){text-align:start}
html[lang='ar'] :is(.site-nav,#navigation,#modern-nav){margin-left:0;margin-inline-start:auto}
html[lang='ar'] .service-row .arrow{transform:scaleX(-1)}
html[lang='ar'] .privacy-dialog{text-align:start}
@media(max-width:1100px){.header-row{gap:18px}.site-nav[data-open="true"]{margin:0}.wordmark{font-size:21px}}
.selected-files{display:grid;gap:10px;margin-top:10px}.selected-file{display:flex;align-items:start;gap:12px;justify-content:space-between}.selected-file-name{min-width:0;overflow-wrap:anywhere}.file-remove,.file-clear{font-size:16px;min-height:44px;border:1px solid var(--line);background:var(--paper);color:var(--ink);padding:6px 12px}.file-remove{flex-shrink:0}.file-clear[hidden],.selected-files[hidden]{display:none}.file-remove-message{display:block;font-size:16px;line-height:1.65}

/* These dossier, ledger and dialogue themes retain their distinct layouts. */
:is(.dossier,.ledger,.dialogue) :is(.footer-links,.footer-links button,.footer-bottom){font-size:16px}
:is(.paper-sheet .paper-head,.paper-sheet small,.ledger-display header,.ledger-display small,.ledger-grid,.dossier .dossier-bottom){font-size:14px!important}
html:is([lang='zh-Hans'],[lang='ja'],[lang='hi'],[lang='ar']) :is(.paper-head,.paper-name,.paper-stamp,.paper-sheet small,.ledger-display,.ledger-display small,.ledger-display header,.ledger-strip b,.question-ribbon){font-family:inherit;letter-spacing:0}
html[lang='ar'] :is(.paper-head,.paper-name,.paper-stamp,.ledger-display,.question-ribbon){text-align:start}
html[lang='ar'] .paper-stamp{margin-left:0;margin-inline-start:auto}
.dossier .dossier-bottom{flex-wrap:wrap;gap:16px}
.dossier .dossier-bottom>span{min-width:0}
.paper-sheet.front{position:relative;inset:auto;margin:20px;min-height:400px}
:is(.paper-head,.paper-name,.paper-stamp,.ledger-display,.question-ribbon>span){overflow-wrap:anywhere;min-width:0}
.paper-stamp{height:auto!important;min-height:70px;padding:8px}
@media(max-width:560px){.paper-sheet.front{margin:14px;min-height:350px}.dialogue .question-ribbon{flex-wrap:wrap;text-align:start}.dialogue .question-ribbon>span{flex:1 1 100px}}

/* The chemistry layout keeps its own root stylesheet and interactive cards. */
.site-footer,.site-footer a,.site-footer button,.footer-links,.footer-links button,.footer-bottom,.modern-footer,.modern-footer a,.modern-footer button{font-size:16px}
.site-footer h2,.modern-footer h2{font-size:18px}
html[lang='ar'] #navigation{margin-inline-start:auto}
html[lang='ar'] .brand>span{direction:ltr;unicode-bidi:isolate}
.attachment-list{font-size:16px}.attachment-list button,.attachment-clear{font:inherit;min-height:44px}
@media(max-width:1100px){.header-cta{display:none}#navigation.is-open{margin:0;max-width:100%}}
@media(max-width:560px){html:is([lang='zh-Hans'],[lang='ja'],[lang='hi'],[lang='ar']) h1{overflow-wrap:anywhere}}

/* The modern editorial themes retain their original navigation and copy controls. */
.modern-head-inner{position:relative;min-width:0}.modern-nav,.modern-head-actions,.modern-brand>span{min-width:0}
.modern-nav .language-options{background:var(--paper,#fff);color:var(--ink,#202020)}
.modern-nav .language-options :is(a,[aria-current]){font-size:18px;line-height:1.6}
.modern-nav .language-options :is(a,[aria-current]):hover{background:var(--line,#eee)}
.modern-footer :is(p,li,a,button,.footer-bottom){font-size:16px!important;line-height:1.75}
.modern-footer .modern-brand small{font-size:14px!important}
:is(.question-copy,.question-tools button,.modern-menu){font-size:16px!important;line-height:1.5;min-height:44px;white-space:normal}
.privacy-panel :is(p,a,summary,button){font-size:16px!important;line-height:1.75}
html:is([lang='zh-Hans'],[lang='ja'],[lang='hi'],[lang='ar']) :is(.b8-hero h1,.b8-editorial h1,.theme-editorial h2,.modern-brand small,.b8-editorial-mast,.b8-mast,.b8-kicker,.hero-kicker){font-family:inherit;letter-spacing:0}
html:is([lang='zh-Hans'],[lang='ja']) :is(.b8-hero h1,.b8-editorial h1){line-height:1.4;overflow-wrap:anywhere}
html[lang='hi'] :is(.b8-hero h1,.b8-editorial h1){line-height:1.5;overflow-wrap:anywhere}
html[lang='ar'] :is(.b8-hero h1,.b8-editorial h1){line-height:1.65;overflow-wrap:anywhere}
html[lang='ar'] :is(.modern-nav,.modern-menu){margin-left:0;margin-inline-start:auto}
html[lang='ar'] .modern-brand{direction:ltr;unicode-bidi:isolate;text-align:left;font-family:Manrope,Arial,sans-serif}
html[lang='ar'] :is(.question-item,.question-text,.question-copy,.modern-footer,.content th,.content td){text-align:start}
html[lang='ar'] :is(.b8-editorial-index i,.card__link .arrow){transform:scaleX(-1)}
.form-honeypot{position:absolute;left:auto!important;inset-inline-start:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);clip-path:inset(50%);white-space:nowrap}
/* Protected PHP response pages use the same local fonts and readable action cards. */
.response-page{min-height:50vh;display:grid;align-items:center;padding-block:70px}
.response-page>.wrap{width:min(100% - 40px,1080px);min-width:0}
.response-card{max-width:920px;margin-inline:auto;padding:clamp(24px,5vw,58px);border:1px solid var(--line,#ddd);background:var(--paper,#fff);border-radius:14px;overflow-wrap:anywhere}
.response-card h1{font-size:clamp(30px,4vw,48px);line-height:1.35;margin:0 0 24px}
.response-card .lead{font-size:18px!important;line-height:1.8}
.response-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.response-actions .button{min-width:0;max-width:100%;font-size:16px!important;white-space:normal;line-height:1.65!important;text-align:center}
html:is([lang='zh-Hans'],[lang='ja'],[lang='hi'],[lang='ar']) .response-card h1{font-family:inherit;letter-spacing:0;line-height:1.6}
html[lang='ar'] .response-card{text-align:start}
@media(max-width:1100px){
 .modern-head-inner{justify-content:space-between}.modern-head-actions .button{display:none}.modern-menu{display:inline-flex;align-items:center;justify-content:center}
 #modern-nav{display:none;position:absolute;top:100%;inset-inline:0;width:auto;max-width:100%;z-index:70;padding:20px 24px;background:var(--paper,#fff);color:var(--ink,#202020);border:1px solid var(--line,#ddd);box-shadow:0 15px 25px #1d292710}
 #modern-nav.open{display:flex;flex-direction:column;align-items:stretch;gap:0;margin:0}
 #modern-nav>a{display:block;padding:10px 0;min-height:44px;white-space:normal;font-size:18px}
 #modern-nav .language-switch{border-top:1px solid var(--line,#ddd);padding-top:14px;margin-top:10px}
}
@media(max-width:650px){
 html:is([lang='zh-Hans'],[lang='ja']) :is(.b8-hero h1,.b8-editorial h1){font-size:36px}
 html[lang='hi'] :is(.b8-hero h1,.b8-editorial h1){font-size:36px}
 html[lang='ar'] :is(.b8-hero h1,.b8-editorial h1){font-size:37px}
 .modern-brand small{max-width:min(220px,52vw)}.modern-head-actions{flex-shrink:0}
 .response-page{padding-block:35px}.response-actions{display:grid}.response-actions .button{width:100%}
}

/* Readable controls and payment logos retain their intrinsic proportions. */
body{font-size:18px}
.eyebrow{font-size:14px}
.privacy-help{font-size:16px!important}
.site-footer-copyright{font-size:16px}
.legal-nav a{font-size:14px}
.legal-document .acquiring-logo-item img,.acquiring-logo-item img,.payment-logos img,.payment-logo img,img.payment-logo{width:auto!important;height:auto!important;max-width:160px!important;max-height:48px!important;object-fit:contain}

.modern-topline,.modern-brand small,.modern-hero-note,.drawing-top,.proof-number,.service-card .icon,.service-card .card__icon,.trust-line span,.trust span,.chip,.badge,.question-item .q-number{font-size:14px}
.lead-form .file-selection{font-size:16px}