/* Sanatech | Global navigation 2026-10 | independent exams, certificates and verification */
.st-header{position:sticky!important;top:0;z-index:1050!important;background:rgba(255,255,255,.97)!important;border-bottom:1px solid #e9edf4!important;box-shadow:none!important;backdrop-filter:blur(18px)}
.st-header.scrolled{box-shadow:0 8px 28px rgba(20,39,70,.055)!important}
.st-header .st-header-container{width:min(100% - 40px,1460px)!important;max-width:1460px!important;margin-inline:auto;padding-inline:0!important}
.st-header .st-header-inner{min-height:82px!important;display:flex!important;align-items:center!important;justify-content:space-between!important;gap:20px!important}
.st-header .st-header-brand{gap:10px;flex-shrink:0!important;min-width:0!important;text-decoration:none!important}
.st-header .st-header-brand img,body[data-page="exams"] .st-header .st-header-brand img{width:52px!important;height:52px!important;min-width:52px;object-fit:contain!important}
.st-header .st-header-brand .brand-text strong,body[data-page="exams"] .st-header .brand-text strong{font-size:1.28rem!important;line-height:1.36;font-weight:900;color:#172033}
.st-header .st-header-brand .brand-text span,body[data-page="exams"] .st-header .brand-text span{display:block;font-size:.64rem!important;color:#78879c;font-weight:650;white-space:nowrap}
.st-header .st-header-navigation{flex:1;min-width:0}
.st-header .st-main-nav,body[data-page="exams"] .st-header .st-main-nav{display:flex;align-items:center;justify-content:flex-end;gap:2px!important;margin:0;padding:0;list-style:none}
.st-header .st-main-nav>li>a:not(.st-nav-verify-link),.st-header .st-main-nav>.st-education-menu>.nav-submenu-toggle,body[data-page="exams"] .st-header .st-main-nav>li>a:not(.st-nav-verify-link),body[data-page="exams"] .st-header .st-main-nav>.st-education-menu>.nav-submenu-toggle{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 10px!important;font-size:.83rem!important;line-height:1.6;color:#40516a!important;font-weight:750!important;border-radius:11px!important;white-space:nowrap!important;text-align:center;text-decoration:none;background:transparent;transition:background .18s ease,color .18s ease}
.st-header .st-main-nav>li>a:hover:not(.st-nav-verify-link),.st-header .st-main-nav>li>a.active:not(.st-nav-verify-link),.st-header .st-main-nav>.st-education-menu>.nav-submenu-toggle:hover,.st-header .st-main-nav>.st-education-menu>.nav-submenu-toggle.active,body[data-page="exams"] .st-header .st-main-nav>li>a.active:not(.st-nav-verify-link){background:#fff0f1!important;color:#c91f3a!important}
.st-header .st-nav-icon{width:17px;height:17px;flex:none;stroke:currentColor}
.st-header .st-nav-divider{width:1px;height:24px;background:#e2e8f0;margin:0 5px}
.st-header .st-nav-verify{margin-right:6px}
.st-header .st-nav-verify-link,body[data-page="exams"] .st-header .st-nav-verify-link{min-height:44px!important;display:inline-flex!important;align-items:center;gap:8px;padding:9px 14px!important;border-radius:12px!important;background:#ef3f48!important;border:1px solid #ef3f48!important;color:#fff!important;font-size:.8rem!important;font-weight:800!important;white-space:nowrap!important;text-decoration:none!important;box-shadow:0 5px 14px rgba(12,57,110,.13);transition:background .2s ease,transform .2s ease}
.st-header .st-nav-verify-link:hover{background:#c91f3a!important;transform:translateY(-1px)}
.st-header .st-nav-verify-link svg{width:17px;height:17px}
.st-header .st-mobile-only{display:none}
.st-header .st-education-menu{position:relative}
.st-header .st-education-menu>.nav-submenu-toggle svg{width:15px;height:15px}
.st-header .st-education-menu .nav-submenu{right:0;top:calc(100% + 12px);min-width:285px!important;padding:8px!important;border:1px solid #e5ebf4!important;border-radius:18px!important;box-shadow:0 22px 55px rgba(13,40,76,.12)!important;background:#fff!important;text-align:right}
.st-header .st-education-menu .nav-submenu a,.st-header .st-education-menu .nav-submenu a.active{display:flex!important;align-items:center!important;gap:12px!important;text-align:right!important;padding:13px!important;border-radius:12px!important;background:transparent;color:#172033;font-size:.9rem!important;line-height:1.6}
.st-header .st-education-menu .nav-submenu a:hover,.st-header .st-education-menu .nav-submenu a.active{background:#fff0f1!important;color:#c91f3a!important}
.st-header .st-education-menu .nav-submenu a strong{display:block;font-size:.85rem;font-weight:850;color:#172033}
.st-header .st-education-menu .nav-submenu a small{display:block;font-size:.72rem;color:#8190a2;font-weight:500;margin-top:3px}
.st-header .st-menu-icon{width:41px;height:41px;display:grid;place-items:center;border-radius:12px;background:#fff0f1;color:#c91f3a;font-size:1.4rem;flex:none}
.st-header .st-mobile-toggle{display:none}
.st-header .st-main-nav>li>a:focus-visible,.st-header .nav-submenu-toggle:focus-visible,.st-header .st-nav-verify-link:focus-visible,.st-header .st-mobile-toggle:focus-visible{outline:3px solid #84b7e9;outline-offset:2px}
@media(max-width:1270px){.st-header .st-header-inner{gap:8px!important}.st-header .st-main-nav>li>a:not(.st-nav-verify-link),.st-header .st-main-nav>.st-education-menu>.nav-submenu-toggle{padding:9px 7px!important;font-size:.77rem!important}.st-header .st-header-brand .brand-text span{display:none!important}}
@media(max-width:1100px){
 .st-header .st-header-container{width:calc(100% - 32px)!important}
 .st-header .st-header-inner{min-height:72px!important;gap:12px!important}
 .st-header .st-header-navigation{position:static;flex:0 0 auto}
 .st-header .st-mobile-toggle{display:flex!important;width:46px;height:46px;min-width:46px;align-items:center;justify-content:center;border:1px solid #dfe7f0;border-radius:13px;background:#f5f8fc;color:#172033}
 .st-header .st-main-nav,body[data-page="exams"] .st-header .st-main-nav{display:none!important;position:absolute!important;top:calc(100% + 9px)!important;right:16px!important;left:16px!important;width:auto!important;max-height:min(78vh,690px);overflow-y:auto;overflow-x:hidden;flex-direction:column!important;align-items:stretch!important;gap:2px!important;padding:12px!important;background:#fff!important;border:1px solid #e4ebf3!important;border-radius:18px!important;box-shadow:0 24px 70px rgba(9,36,71,.16)!important;z-index:1200}
 .st-header .st-main-nav.open,body[data-page="exams"] .st-header .st-main-nav.open{display:flex!important}
 .st-header .st-main-nav>li{width:100%}
 .st-header .st-main-nav>li>a:not(.st-nav-verify-link),.st-header .st-main-nav>.st-education-menu>.nav-submenu-toggle,body[data-page="exams"] .st-header .st-main-nav>li>a:not(.st-nav-verify-link),body[data-page="exams"] .st-header .st-main-nav>.st-education-menu>.nav-submenu-toggle{width:100%;justify-content:flex-start!important;text-align:right!important;padding:12px 15px!important;min-height:46px;font-size:.92rem!important}
 .st-header .st-mobile-only{display:list-item}
 .st-header .st-nav-divider{height:1px!important;width:100%!important;margin:7px 0!important}
 .st-header .st-nav-verify{margin:6px 0 0}
 .st-header .st-nav-verify-link,body[data-page="exams"] .st-header .st-nav-verify-link{display:flex!important;width:100%;justify-content:space-between;min-height:48px!important;padding:12px 15px!important;font-size:.9rem!important}
 .st-header .st-education-menu .nav-submenu{position:static!important;display:none!important;min-width:0!important;max-width:none!important;opacity:1!important;visibility:visible!important;transform:none!important;box-shadow:none!important;border-radius:13px!important;background:#f7f9fd!important;margin:4px 4px 7px!important;padding:6px!important}
 .st-header .st-education-menu.submenu-open>.nav-submenu{display:block!important}
 .st-header .st-education-menu:hover>.nav-submenu,.st-header .st-education-menu:focus-within>.nav-submenu{display:none!important}
 .st-header .st-education-menu.submenu-open:hover>.nav-submenu,.st-header .st-education-menu.submenu-open:focus-within>.nav-submenu{display:block!important}
 .st-header .st-header-brand .brand-text span,body[data-page="exams"] .st-header .brand-text span{display:block!important}
}
@media(max-width:450px){.st-header .st-header-brand img,body[data-page="exams"] .st-header .st-header-brand img{width:45px!important;height:45px!important;min-width:45px}.st-header .st-header-brand .brand-text strong{font-size:1.13rem!important}.st-header .st-header-brand .brand-text span{font-size:.59rem!important}.st-header .st-main-nav{right:10px!important;left:10px!important}}
@media(prefers-reduced-motion:reduce){.st-header *{transition:none!important}}

/* Shared visual language with main.css */
.st-header{font-family:var(--font-main,"IRANSansXFaNum",Tahoma,sans-serif)!important;background:rgba(255,255,255,.96)!important;border-bottom:1px solid var(--border,#e6eaf0)!important}
.st-header .st-header-container{max-width:1180px!important;width:100%!important;padding-inline:12px!important}
.st-header .st-header-inner{min-height:86px!important}.st-header .st-header-brand .brand-text strong{color:var(--brand-navy,#0b376b)!important}
.st-header .st-main-nav>li>a:hover:not(.st-nav-verify-link),.st-header .st-main-nav>li>a.active:not(.st-nav-verify-link),.st-header .st-main-nav>.st-education-menu>.nav-submenu-toggle:hover,.st-header .st-main-nav>.st-education-menu>.nav-submenu-toggle.active{background:var(--brand-red-soft,#fff0f1)!important;color:var(--brand-red,#ef3f48)!important}
.st-header .st-nav-verify-link{background:linear-gradient(135deg,var(--brand-red,#ef3f48),var(--brand-red-dark,#c91f3a))!important;border-color:var(--brand-red,#ef3f48)!important;box-shadow:0 10px 24px rgba(239,63,72,.2)!important}.st-header .st-nav-verify-link:hover{background:var(--brand-red-dark,#c91f3a)!important}
.st-header .st-menu-icon{background:#fff0f1!important;color:#c91f3a!important}.st-header .st-education-menu .nav-submenu a:hover{background:#fff0f1!important;color:#c91f3a!important}