/* stadira-header-2026 */

:root{--sth-navy:#0B1F3A;--sth-terra:#A94F3A;--sth-teal:#237380;--sth-sun:#F7B82E}
html{scroll-padding-top:96px}
#masthead{position:sticky;top:-40px;z-index:990;background:#fff}
#masthead:after{content:"";display:block;height:4px;background:linear-gradient(90deg,#237380 0 38%,#A94F3A 38% 72%,#F7B82E 72% 100%)}
body.admin-bar #masthead{top:-8px}
.sth-top{background:var(--sth-navy);height:40px;font-size:13.5px;line-height:1.2}
.sth-top-in{max-width:1240px;height:100%;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.sth-top p{display:flex;align-items:center;gap:8px;margin:0!important;color:#DCE6EE!important;font-size:13.5px!important;line-height:1.2!important;white-space:nowrap}
.sth-top .sth-ic{width:15px;height:15px;flex:none;color:#8FE3CE}
.sth-sep{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.4);margin:0 4px}
.sth-top a{display:inline-flex;align-items:center;gap:7px;color:#fff!important;font-weight:600;text-decoration:none!important}
.sth-top a:hover span,.sth-top a:focus-visible span{text-decoration:underline}
.sth-top .sth-wa-l{display:none}
.sth-top a.sth-quiz{color:var(--sth-sun)!important;font-weight:800;margin-left:16px;padding-left:16px;border-left:1px solid rgba(255,255,255,.22)}
.sth-top a.sth-quiz:hover{text-decoration:underline!important}
#masthead .main-header-bar{background:#fff!important;border-bottom:0!important;transition:box-shadow .25s ease}
body.sth-scrolled #masthead .main-header-bar{box-shadow:0 10px 26px rgba(11,31,58,.13)}
#masthead .menu-link .sth-ic{width:17px;height:17px;flex:none}

@media(min-width:922px){
#masthead #ast-desktop-header .custom-logo{width:280px!important;max-width:280px!important;height:auto!important}
#masthead #ast-desktop-header .site-branding{padding-top:0!important;padding-bottom:0!important}
#masthead #ast-desktop-header .ast-primary-header-bar .ast-builder-grid-row{min-height:80px!important;align-items:center!important}
#masthead #ast-hf-menu-1{align-items:center;flex-wrap:nowrap!important}
#masthead #ast-hf-menu-1>.menu-item>.menu-link{--nav-accent:var(--sth-terra);color:var(--sth-navy)!important;font-size:15.5px!important;font-weight:700!important;padding-left:11px!important;padding-right:11px!important;white-space:nowrap!important}
#masthead #ast-hf-menu-1>.menu-item>.menu-link:after{left:11px;right:11px;bottom:20px;height:3px;background:var(--sth-terra)}
#masthead #ast-hf-menu-1>.menu-item>.menu-link:hover,
#masthead #ast-hf-menu-1>.menu-item>.menu-link:focus-visible,
#masthead #ast-hf-menu-1>.menu-item>.menu-link[aria-current="page"],
#masthead #ast-hf-menu-1>.current-menu-item>.menu-link{color:var(--sth-terra)!important}
#masthead #ast-hf-menu-1>.sth-account,#masthead #ast-hf-menu-1>.sth-cta{display:flex!important;align-items:center!important;height:auto!important}
#masthead #ast-hf-menu-1>.sth-account{margin-left:12px}
#masthead #ast-hf-menu-1>.menu-item.sth-account>.menu-link,
#masthead #ast-hf-menu-1>.menu-item.sth-cta>.menu-link{height:44px!important;min-height:44px!important;line-height:1!important;display:inline-flex!important;align-items:center!important;gap:8px;border-radius:999px!important;padding:0 18px!important;margin:0!important;font-size:15px!important;transition:background .2s,color .2s,transform .2s}
#masthead #ast-hf-menu-1>.menu-item.sth-account>.menu-link{border:2px solid var(--sth-navy);background:#fff!important;color:var(--sth-navy)!important}
#masthead #ast-hf-menu-1>.menu-item.sth-account>.menu-link:hover,
#masthead #ast-hf-menu-1>.menu-item.sth-account>.menu-link:focus-visible,
#masthead #ast-hf-menu-1>.menu-item.sth-account>.menu-link[aria-current="page"]{background:var(--sth-navy)!important;color:#fff!important}
#masthead #ast-hf-menu-1>.sth-cta{margin-left:10px}
#masthead #ast-hf-menu-1>.menu-item.sth-cta>.menu-link{background:var(--sth-sun)!important;color:var(--sth-navy)!important;font-weight:800!important;padding:0 22px!important;box-shadow:0 6px 16px rgba(247,184,46,.4)}
#masthead #ast-hf-menu-1>.menu-item.sth-cta>.menu-link:hover,
#masthead #ast-hf-menu-1>.menu-item.sth-cta>.menu-link:focus-visible{background:#FFC845!important;color:var(--sth-navy)!important;transform:translateY(-1px)}
#masthead #ast-hf-menu-1>.sth-account>.menu-link:after,
#masthead #ast-hf-menu-1>.sth-cta>.menu-link:after{display:none!important}
}
@media(min-width:922px) and (max-width:1240px){
#masthead #ast-desktop-header .custom-logo{width:200px!important;max-width:200px!important}
#masthead #ast-hf-menu-1>.menu-item>.menu-link{font-size:14.5px!important;padding-left:8px!important;padding-right:8px!important}
#masthead #ast-hf-menu-1>.menu-item>.menu-link:after{left:8px;right:8px}
#masthead #ast-hf-menu-1>.sth-account{margin-left:8px}
#masthead #ast-hf-menu-1>.menu-item.sth-account>.menu-link{padding:0 14px!important}
#masthead #ast-hf-menu-1>.menu-item.sth-cta>.menu-link{padding:0 16px!important}
}
@media(min-width:922px) and (max-width:1060px){
#masthead #ast-desktop-header .custom-logo{width:175px!important;max-width:175px!important}
#masthead #ast-hf-menu-1>.menu-item>.menu-link{font-size:14px!important;padding-left:6px!important;padding-right:6px!important}
#masthead #ast-hf-menu-1>.menu-item.sth-account>.menu-link .sth-ic{display:none}
}

@media(max-width:921px){
#masthead{top:-34px}
.sth-top{height:34px}
.sth-top-in{padding:0 16px}
.sth-top-l{display:none!important}
.sth-top-r{width:100%;justify-content:space-between}
.sth-top .sth-wa-l{display:inline}
.sth-top .sth-wa-n{display:none}
.sth-top a.sth-quiz{margin-left:0;padding-left:0;border-left:0}
#masthead #ast-mobile-header .main-header-bar{min-height:66px}
#masthead #ast-mobile-header .ast-primary-header-bar .site-primary-header-wrap,
#masthead #ast-mobile-header .ast-builder-grid-row{min-height:66px}
#masthead #ast-mobile-header .custom-logo{width:215px!important;max-width:215px!important;height:auto!important}
#masthead #ast-mobile-header .site-branding{padding-top:0!important;padding-bottom:0!important}
#masthead #ast-mobile-header .ast-primary-header-bar .ast-builder-grid-row{min-height:71px!important;align-items:center!important}
#masthead #ast-mobile-header .menu-toggle{width:46px;height:46px;padding:0!important;display:inline-flex!important;align-items:center;justify-content:center;border-radius:14px!important;border:2px solid #D3DEE3!important;background:#fff!important;color:var(--sth-navy)!important}
#masthead #ast-mobile-header .menu-toggle .ast-mobile-svg{fill:currentColor!important;width:22px;height:22px}
#masthead #ast-mobile-header .menu-toggle.toggled{background:var(--sth-navy)!important;border-color:var(--sth-navy)!important;color:#fff!important}
#masthead .ast-mobile-header-content{background:#fff!important;border-top:1px solid #E3EBEF;box-shadow:0 18px 30px rgba(11,31,58,.14);max-height:calc(100vh - 110px);overflow-y:auto}
#masthead #ast-hf-mobile-menu{display:flex!important;flex-wrap:wrap;padding:6px 0 4px}
#masthead #ast-hf-mobile-menu>li{width:100%;border:0!important}
#masthead #ast-hf-mobile-menu>li>.menu-link{display:flex!important;align-items:center;gap:10px;color:var(--sth-navy)!important;font-size:17px!important;font-weight:700!important;line-height:1.3!important;padding:14px 22px!important;border:0!important;border-bottom:1px solid #EEF2F4!important;border-left:4px solid transparent!important;background:#fff!important}
#masthead #ast-hf-mobile-menu>li>.menu-link:after{display:none!important}
#masthead #ast-hf-mobile-menu>li>.menu-link:hover,
#masthead #ast-hf-mobile-menu>li>.menu-link[aria-current="page"],
#masthead #ast-hf-mobile-menu>.current-menu-item>.menu-link{color:var(--sth-terra)!important;border-left-color:var(--sth-terra)!important;background:#FBF6F2!important}
#masthead #ast-hf-mobile-menu>li.sth-m-btn{width:50%;padding:16px 6px 14px 22px}
#masthead #ast-hf-mobile-menu>li.sth-m-signup{padding:16px 22px 14px 6px}
#masthead #ast-hf-mobile-menu>li.sth-m-btn>.menu-link{justify-content:center!important;width:100%!important;height:48px!important;min-height:48px!important;margin:0!important;padding:0 12px!important;border:2px solid var(--sth-navy)!important;border-radius:999px!important;background:#fff!important;color:var(--sth-navy)!important;box-shadow:none!important;box-sizing:border-box!important}
#masthead #ast-hf-mobile-menu>li.sth-m-signup>.menu-link{background:var(--sth-sun)!important;border-color:var(--sth-sun)!important;font-weight:800!important}
#masthead #ast-hf-mobile-menu>li.sth-m-account{padding:16px 22px 14px}
#masthead #ast-hf-mobile-menu>li.sth-m-account>.menu-link{justify-content:center;min-height:50px;border:0!important;border-radius:999px;background:var(--sth-navy)!important;color:#fff!important}
}
@media(max-width:921px){body.admin-bar #masthead{top:-2px}}
@media(max-width:782px){body.admin-bar #masthead{top:12px}}
@media(max-width:600px){body.admin-bar #masthead{top:-34px}}
/* Tutor course-page tab bar sticks below the header, not under it */
@media(min-width:922px){.tutor-is-sticky{top:84px!important}body.admin-bar .tutor-is-sticky{top:116px!important}}
@media(max-width:921px){.tutor-is-sticky{top:75px!important}body.admin-bar .tutor-is-sticky{top:107px!important}}
@media(max-width:782px){body.admin-bar .tutor-is-sticky{top:121px!important}}
@media(max-width:600px){body.admin-bar .tutor-is-sticky{top:75px!important}}
@media(min-width:922px) and (max-width:975px){#masthead #ast-desktop-header .custom-logo{width:150px!important;max-width:150px!important}}
@media(max-width:359px){#masthead #ast-mobile-header .custom-logo{width:185px!important;max-width:185px!important}}
@media(prefers-reduced-motion:reduce){#masthead *{transition:none!important}}

/* 2026-10-31: room for the longer 'Free until April 2027' button on small laptops */
@media(min-width:922px) and (max-width:1010px){#masthead #ast-hf-menu-1>li:not(.sth-cta):not(.sth-account)>a.menu-link{padding-left:4px!important;padding-right:4px!important}}
@media(min-width:922px) and (max-width:960px){#masthead #ast-hf-menu-1>li:not(.sth-cta):not(.sth-account)>a.menu-link{padding-left:3px!important;padding-right:3px!important}}


/* stadira-google-btn */
.tutor-social-authentication{position:relative!important;display:block!important;width:100%!important;box-sizing:border-box!important;margin-top:30px!important;padding-top:30px!important;border-top:1px solid #E4DCCE!important;gap:0!important}
.tutor-social-authentication::before{content:"or continue with"!important;position:absolute!important;top:-10px!important;left:50%!important;right:auto!important;transform:translateX(-50%)!important;background:#FFFFFF!important;padding:0 14px!important;font-size:12px!important;font-weight:700!important;letter-spacing:.1em!important;text-transform:uppercase!important;color:#8A7C6C!important;line-height:20px!important;white-space:nowrap!important}
#tutor-pro-google-authentication{width:100%!important;display:block!important;overflow:hidden!important}
.std-ga-scale{display:block!important;margin:0 auto!important;transform-origin:top center!important}
.std-ga-scale iframe{color-scheme:light}
@media(max-width:480px){
.tutor-social-authentication::before{font-size:11px!important;letter-spacing:.08em!important}
}

/* stadira-exam-css */
.stadira-exam{--sx-navy:#0B1F3A;--sx-navy2:#12304F;--sx-terra:#C4624B;--sx-terra-d:#A94F3A;--sx-gold:#F7B82E;--sx-teal:#237380;--sx-mut:#6B5D4E;--sx-line:#E4DCCE;--sx-soft:#FBF7F0;
color:var(--sx-navy);font-size:16.5px;line-height:1.65;margin:0 0 8px}
.stadira-exam *{box-sizing:border-box}
.stadira-exam .sx-head{position:relative;overflow:hidden;background:linear-gradient(135deg,#0B1F3A 0%,#12304F 100%);color:#FFFFFF;border-radius:20px;padding:26px 28px 22px;margin:0 0 20px}
.stadira-exam .sx-head:before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:linear-gradient(90deg,#237380 0 34%,#C4624B 34% 67%,#F7B82E 67% 100%)}
.stadira-exam .sx-set{display:inline-block;background:var(--sx-gold);color:var(--sx-navy);font-weight:800;font-size:12px;letter-spacing:.1em;text-transform:uppercase;border-radius:999px;padding:6px 14px;margin:6px 0 12px}
.stadira-exam .sx-title{font-family:'Space Grotesk',system-ui,sans-serif;font-size:28px;line-height:1.15;font-weight:700;margin:0 0 4px;color:#FFFFFF}
.stadira-exam .sx-sub{margin:0 0 16px;font-size:15.5px;color:rgba(255,255,255,.82)}
.stadira-exam .sx-meta{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0}
.stadira-exam .sx-meta li{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:6px 14px;font-size:14px;color:#FFFFFF}
.stadira-exam .sx-meta b{font-family:'Space Grotesk',system-ui,sans-serif;font-weight:700}
.stadira-exam .sx-note{background:#EDF5F6;border:1px solid #CFE3E6;border-left:5px solid var(--sx-teal);border-radius:14px;padding:15px 18px;font-size:15.5px;color:#123C43;margin:0 0 24px}
.stadira-exam .sx-qs{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:18px}
.stadira-exam .sx-q{background:#FFFFFF;border:1px solid var(--sx-line);border-left:5px solid var(--sx-terra);border-radius:16px;padding:20px 22px;margin:0;box-shadow:0 4px 14px rgba(11,31,58,.05)}
.stadira-exam .sx-q-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:0 0 12px;padding:0 0 10px;border-bottom:1px dashed var(--sx-line)}
.stadira-exam .sx-n{font-family:'Space Grotesk',system-ui,sans-serif;font-weight:700;font-size:17px;color:var(--sx-navy)}
.stadira-exam .sx-marks{background:var(--sx-soft);border:1px solid var(--sx-line);border-radius:999px;padding:4px 12px;font-size:13px;font-weight:700;color:var(--sx-terra-d);white-space:nowrap}
.stadira-exam .sx-stem{margin:0 0 12px}
.stadira-exam .sx-stem:last-child{margin-bottom:0}
.stadira-exam .sx-parts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.stadira-exam .sx-parts li{display:flex;align-items:flex-start;gap:12px;padding:9px 0;border-top:1px solid #F2ECE2;margin:0}
.stadira-exam .sx-parts li:first-child{border-top:0}
.stadira-exam .sx-p{flex:0 0 auto;font-weight:700;color:var(--sx-terra-d);min-width:28px}
.stadira-exam .sx-t{flex:1 1 auto;min-width:0}
.stadira-exam .sx-m{flex:0 0 auto;align-self:flex-start;background:#FFF6E2;border:1px solid #F3DFB0;color:#7A5E12;border-radius:999px;padding:2px 10px;font-size:12.5px;font-weight:700;white-space:nowrap}
.stadira-exam .sx-fig{margin:14px 0 4px;text-align:center}
.stadira-exam .sx-fig img{max-width:100%;height:auto;display:inline-block;background:#FFFFFF;border:1px solid var(--sx-line);border-radius:12px;padding:10px}
.stadira-exam sub,.stadira-exam sup{font-size:.72em;line-height:0}
.stadira-exam em{font-style:italic}
html body .stadira-exam ol,html body .stadira-exam ul{list-style:none!important;list-style-type:none!important;padding-left:0!important;margin-left:0!important}
html body .stadira-exam ol li,html body .stadira-exam ul li{list-style:none!important;list-style-type:none!important}
html body .stadira-exam ol li:before,html body .stadira-exam ul li:before,html body .stadira-exam ol li:marker{content:none!important;display:none!important}
html body .stadira-exam .sx-qs>li::marker,html body .stadira-exam .sx-parts>li::marker,html body .stadira-exam .sx-meta>li::marker{content:''!important}
html body .stadira-exam .sx-head .sx-title{color:#FFFFFF!important}
html body .stadira-exam .sx-head .sx-sub{color:rgba(255,255,255,.85)!important}
html body .stadira-exam .sx-head .sx-meta li{color:#FFFFFF!important}
html body .stadira-exam .sx-head .sx-set{color:#0B1F3A!important}
.stadira-exam .sx-cont{display:block!important;padding:8px 0 4px 40px!important;border-top:0!important;color:var(--sx-navy)}
.stadira-exam .sx-cont .sx-t{flex:1 1 auto}
@media(max-width:600px){
.stadira-exam{font-size:16px}
.stadira-exam .sx-head{padding:22px 18px 18px;border-radius:16px}
.stadira-exam .sx-title{font-size:23px}
.stadira-exam .sx-q{padding:16px 16px;border-radius:14px}
.stadira-exam .sx-parts li{flex-wrap:wrap}
.stadira-exam .sx-t{flex:1 1 100%;order:2}
.stadira-exam .sx-m{order:3;margin-left:40px}
}
@media print{
.stadira-exam .sx-head{background:#FFFFFF!important;color:#000!important;border:1px solid #000}
.stadira-exam .sx-title,.stadira-exam .sx-sub,.stadira-exam .sx-meta li{color:#000!important}
.stadira-exam .sx-q{break-inside:avoid;box-shadow:none}
}