.stunavi-menu{position:sticky;top:0;z-index:950;background:#fff;border-bottom:1px solid #d8e5e7;box-shadow:0 3px 18px #0b2d3a08;color:#0b2d3a;font:15px/1.4 Arial,Helvetica,sans-serif}

/* An identifiable account entrance; the marketing home remains /start.html. */
.auth-page{background:#083e49}
.auth-page .auth-shell{position:relative;isolation:isolate;display:grid;place-items:center;min-height:calc(100svh - 70px);padding:48px 20px;background:radial-gradient(ellipse at 85% 8%,#13737b70,transparent 55%),radial-gradient(ellipse at 0 100%,#041f35b0,transparent 65%),#083e49;overflow:hidden}
.auth-page .auth-shell::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background-image:radial-gradient(circle,#a4e2dc30 1px,transparent 1.5px),linear-gradient(#a4e2dc08 1px,transparent 1px),linear-gradient(90deg,#a4e2dc08 1px,transparent 1px);background-size:24px 24px,120px 120px,120px 120px;mask-image:linear-gradient(115deg,#000 0%,#0004 55%,#000 100%)}
.auth-page .auth-shell::after{content:"";position:absolute;z-index:-1;width:750px;height:750px;right:-320px;top:-320px;border:1px solid #94dcd822;border-radius:50%;box-shadow:0 0 0 65px #94dcd809,0 0 0 130px #94dcd807;pointer-events:none}
.auth-entry{width:min(100%,480px);min-width:0}
.auth-brand-line{text-align:center;margin:0 0 26px;color:#e1f5f1;font-size:clamp(22px,3vw,30px);font-weight:650;letter-spacing:-.025em;line-height:1.2}
.auth-page .auth-card{width:100%;max-width:none;margin:0;padding:36px;background:#fff;border:1px solid #dce9e8;border-radius:20px;box-shadow:0 22px 70px #00192240}
.auth-page .auth-card h1{font-size:32px;line-height:1.16;letter-spacing:-.035em;margin-bottom:14px}
.auth-page .auth-card>p:not(.pricing-note):not(.auth-home-note){font-size:16px;line-height:1.6;color:#526d78}
.auth-page .auth-card .eyebrow{color:#08757b;font-size:12px;margin-bottom:16px}
.auth-page .form-field input{background:#fbfdfd;min-height:52px;font-size:16px}
.auth-page .auth-card .button{min-height:48px;font-size:15px}
.auth-page .auth-card .button:not(.secondary){background:#0b7378;border-color:#0b7378}
.auth-page .auth-card .button:not(.secondary):hover{background:#085e64}
.auth-page .auth-home-note{margin:22px 0 0;padding-top:20px;border-top:1px solid #e3ecec;font-size:14px;line-height:1.65;text-align:center;color:#536b74}
.auth-home-note a{display:block;color:#09656c;font-weight:700;text-underline-offset:3px;padding:5px}
.auth-page .auth-card .pricing-note{font-size:13px;line-height:1.6;margin-top:17px;color:#607781}
.auth-brand-caption{margin:22px 0 0;text-align:center;color:#b9d8da;font-size:14px;letter-spacing:.025em}
.auth-page .stunavi-menu-links :is([data-nav-portal],[data-nav-coach],a[href="/konto.html"],.menu-login){display:none}
.auth-page :is(input,a,button):focus-visible{outline:3px solid #0a9294;outline-offset:3px}
@media(max-width:520px){.auth-page .auth-shell{padding:32px 16px;min-height:calc(100svh - 64px)}.auth-page .auth-card{padding:26px 22px;border-radius:16px}.auth-page .auth-card h1{font-size:28px}.auth-brand-line{margin-bottom:22px}.auth-brand-caption{margin-top:20px}}
.stunavi-menu *{box-sizing:border-box}.stunavi-menu [hidden]{display:none!important}.stunavi-menu-inner{max-width:1200px;min-height:74px;margin:auto;padding:10px 22px;display:flex;justify-content:space-between;align-items:center;gap:24px}
.stunavi-wordmark{display:flex;flex:0 0 auto}.stunavi-wordmark img{width:150px;height:auto;max-height:none}.stunavi-menu-links{display:flex;gap:7px;align-items:center}.stunavi-menu-links>a,.stunavi-menu-links>button,.menu-toggle{display:flex;gap:7px;align-items:center;min-height:44px;padding:10px 12px;text-decoration:none;font:600 14px Arial,Helvetica,sans-serif;color:#23434e;background:transparent;border:1px solid transparent;border-radius:9px;cursor:pointer}
.stunavi-menu-links>a:hover,.stunavi-menu-links>a[aria-current=page]{background:#e6f5f2;color:#075c62}.stunavi-menu-links .menu-login{background:#0b6970;color:#fff}.stunavi-menu-links>button{border-color:#c6d9dc}.stunavi-menu svg{flex-shrink:0}.menu-toggle{display:none;border-color:#bbd0d3}
.stunavi-menu :focus-visible{outline:3px solid #09777c;outline-offset:3px}body :is(section[id],.quizq[id],.formula-panel[id]){scroll-margin-top:92px}
@media(max-width:1040px){.stunavi-menu-inner{flex-wrap:wrap;gap:10px}.menu-toggle{display:flex}.stunavi-menu-links{display:none;flex-direction:column;width:100%;align-items:stretch;padding:8px 0;gap:4px}.menu-open .stunavi-menu-links{display:flex}.stunavi-menu-links>a,.stunavi-menu-links>button{justify-content:flex-start;min-height:47px}.stunavi-wordmark img{width:135px}.stunavi-menu-inner{min-height:66px;padding:9px 18px}}
.account-settings{margin-top:22px}.account-settings label{display:block;margin:14px 0 6px;font-weight:650;color:#29464e}.account-settings input:not([type=checkbox]),.account-settings select{display:block;width:100%;min-height:44px;border:1px solid #adc6ca;border-radius:8px;padding:10px;font:inherit;background:#fff;color:#0b2d3a}.account-settings fieldset{border:0;padding:0;margin:0}.account-settings fieldset:disabled{opacity:.65}.account-settings .settings-two{display:grid;grid-template-columns:1fr 1fr;gap:18px}.account-settings .settings-check{display:flex;gap:10px;align-items:center;min-height:40px;font-weight:400}.account-settings input[type=checkbox]{width:19px;height:19px;accent-color:#0b7478}.account-settings .settings-days{display:flex;gap:12px;flex-wrap:wrap}.account-settings button{margin-top:15px}.account-settings .settings-message{min-height:24px;color:#17643f}.account-settings .settings-message.error{color:#914330}.premium-hint{padding:13px;background:#f1edfc;border-radius:10px;color:#544089;font-size:14px}.account-settings small{color:#516770}.account-settings [hidden]{display:none!important}@media(max-width:600px){.account-settings .settings-two{grid-template-columns:1fr}}

.stunavi-wordmark{display:flex;align-items:center;gap:3px}.stunavi-domain{font-size:17px;font-weight:700;color:#143a49;padding-bottom:9px}

/* Persistent app menu and explicit subject context. */
.stunavi-menu .menu-toggle{align-items:center;gap:.5rem;flex-shrink:0}.module-context{background:#fff;border-bottom:1px solid #d6e3e8;color:#173c4c}.module-context>div{max-width:1180px;margin:auto;display:flex;align-items:center;gap:.45rem;padding:.5rem 1.2rem;flex-wrap:wrap}.module-context a,.context-subject{display:inline-flex;align-items:center;gap:.4rem;padding:.5rem .75rem;font-size:.875rem}.module-context a{color:#245267;border-radius:.6rem;text-decoration:none}.context-subject{font-weight:750;margin-right:auto}.module-context a[aria-current=page]{background:#e7f3f3;color:#086d74;font-weight:750}.module-context a:hover{background:#edf4f7}.module-context a:focus-visible{outline:3px solid #6251a3;outline-offset:2px}@media(max-width:620px){.context-subject{order:-1;width:100%;padding-bottom:.1rem}.module-context a{font-size:.82rem;padding:.45rem}.module-context>div{gap:.2rem}.stunavi-menu.menu-open .stunavi-menu-links{display:flex;flex-direction:column;align-items:stretch}}
.profile-card{margin-bottom:1.2rem}.profile-card form{max-width:720px}.profile-fields{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.profile-card label{display:block;margin:.8rem 0 .4rem;font-size:.9rem;font-weight:650}.profile-card input,.profile-card select{width:100%;min-height:44px;border:1px solid #b9cdd6;border-radius:9px;padding:.6rem .8rem;background:#fff;color:#173f50;font:inherit;font-size:1rem}.profile-card input[readonly]{background:#f1f5f7;color:#526e7a}.profile-optional{margin:1rem 0}.profile-optional summary{color:#526a7d;font-size:.875rem;cursor:pointer;padding:.4rem 0}.profile-actions{display:flex;gap:.8rem;align-items:center;flex-wrap:wrap;margin-top:1rem}.profile-card label small{font-weight:400;color:#526e7a}.google-login{width:100%;margin-bottom:1rem}.google-login[hidden]{display:none!important}@media(max-width:600px){.profile-fields{grid-template-columns:1fr;gap:0}.profile-actions .button{width:100%}}

.module-alias{font-size:.82rem!important;color:#617b86!important;margin:.2rem 0 .55rem!important}.module-plan select{width:100%;padding:.6rem;border:1px solid #c3d4dc;border-radius:8px;font:inherit;background:white;color:#244b5c}.curriculum-note{padding:1rem 0;margin-top:1rem;color:#416271}.curriculum-note summary{font-weight:650;cursor:pointer}.curriculum-note p{font-size:.9rem;line-height:1.65}.curriculum-note a{color:#0c777d}

/* Visible desktop navigation; collapse when the row needs more room. */
@media(min-width:1101px){.stunavi-menu-inner{max-width:1320px;flex-wrap:nowrap;gap:14px}.stunavi-menu .menu-toggle{display:none}.stunavi-menu .stunavi-menu-links{display:flex;flex-direction:row;flex-basis:auto;padding:0}.stunavi-menu-links>a,.stunavi-menu-links>button{white-space:nowrap;padding:10px}}
@media(max-width:1100px){.stunavi-menu-inner{flex-wrap:wrap}.stunavi-menu .menu-toggle{display:flex}.stunavi-menu .stunavi-menu-links{display:none;flex-basis:100%;flex-direction:column;align-items:stretch}.stunavi-menu.menu-open .stunavi-menu-links{display:flex}}
.module-picker{display:inline-flex;gap:.5rem;align-items:center;margin-right:auto;color:#245267;font-weight:700}.module-picker>span{font-family:Georgia,serif;font-size:1.4rem}.module-picker select{font:600 .9rem Arial,sans-serif;border:1px solid #cedde4;border-radius:8px;color:#214d62;padding:.5rem 1.8rem .5rem .6rem;min-height:40px;background:#fff;max-width:250px}.module-selection-hint{font-size:.82rem;color:#536e7c}.module-picker select:focus-visible{outline:3px solid #6251a3;outline-offset:2px}.subject-mark{display:inline-grid;place-items:center;width:1.15em;height:1.15em;border:1px solid currentColor;border-radius:.22em;font-family:Georgia,serif;color:inherit;margin-right:.15em}@media(max-width:620px){.module-picker{max-width:calc(100% - 105px)}.module-picker select{min-width:0;width:100%}.module-selection-hint{width:100%;padding:.3rem .45rem}}

.free-lesson-hint{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding:.65rem max(1.2rem,calc((100% - 1140px)/2));background:#e9f5f2;color:#185d57;font-size:.85rem}.free-lesson-hint a{color:inherit;font-weight:650}
/* Time-limited commercial offer: warm amber, distinct from AI actions. */
/* Compact advertising popup; native dialog supplies focus containment and Escape. */
.offer-popup{box-sizing:border-box;width:min(420px,calc(100% - 32px));max-height:calc(100dvh - 32px);overflow:auto;margin:auto;padding:32px;border:1px solid #e4e9e8;border-radius:20px;background:#fff;color:#133c47;box-shadow:0 24px 90px #062b3b30;font:15px/1.5 Arial,Helvetica,sans-serif;text-align:left}
.offer-popup::backdrop{background:rgba(9,34,45,.4);backdrop-filter:blur(3px)}body:has(dialog.offer-popup[open]){overflow:hidden}
.offer-popup .offer-dismiss{position:absolute;right:10px;top:9px;width:44px;height:44px;padding:0;border:0;border-radius:50%;background:transparent;color:#587078;font-size:26px;cursor:pointer}.offer-popup .offer-dismiss:hover{background:#f2f6f6}
.offer-popup .offer-label{display:block;margin:0 22px 20px 0;color:#60767c;font-size:12px}.offer-popup .offer-discount{display:flex;align-items:center;gap:14px;color:#aa3d0d}.offer-popup .offer-discount strong{font-size:58px;font-weight:800;line-height:1;letter-spacing:-2px}.offer-popup .offer-discount>span{max-width:70px;font-size:14px;line-height:1.4;font-weight:700}
.offer-popup h2{margin:18px 0 8px;color:#133c47;font:750 28px/1.16 Arial,Helvetica,sans-serif;letter-spacing:-.7px}.offer-popup .offer-benefit{margin:0;color:#526e77;font-size:14px;line-height:1.6}.offer-popup .offer-prices{margin:24px 0 0;display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}.offer-popup .offer-prices strong{font-size:34px;line-height:1.2;letter-spacing:-1px}.offer-popup s{color:#73858a;font-size:16px}.offer-popup .offer-validity{font-size:13px;color:#536d75;margin:6px 0 24px}
.offer-popup .offer-cta{display:flex;align-items:center;justify-content:center;min-height:48px;padding:10px 15px;border-radius:10px;background:#bb470e;color:white;font:700 15px/1.5 Arial,Helvetica,sans-serif;text-decoration:none}.offer-popup .offer-cta:hover{background:#9d3709}.offer-popup :focus-visible{outline:3px solid #09777c;outline-offset:3px}
.offer-popup .offer-foot{margin-top:16px;display:flex;justify-content:space-between;align-items:baseline;gap:10px;color:#60757b;font-size:12px;flex-wrap:wrap}.offer-popup .offer-foot>span{white-space:nowrap}.offer-popup summary{cursor:pointer;text-decoration:underline;text-underline-offset:3px}.offer-popup details[open]{flex-basis:100%}.offer-popup details p{margin:10px 0 0;line-height:1.6;font-size:12px;color:#60757b}
.offer-inline{width:100%;margin:18px 0;padding:22px;box-shadow:none;border-color:#eed3c1;background:#fffaf6}.offer-inline h2,.offer-inline .offer-benefit{display:none}.offer-inline .offer-label{margin-bottom:10px}.offer-inline .offer-prices{margin-top:12px}.offer-inline .offer-validity{margin-bottom:0}
.offer-demo-controls{margin:24px 0;font-size:.9rem;color:#536c7a}.offer-demo-controls summary{cursor:pointer}@media(max-width:380px){.offer-popup{padding:26px 22px}.offer-popup h2{font-size:26px}.offer-popup .offer-prices strong{font-size:30px}}


.price-card .price-test-button{margin-top:10px;background:#fff;color:#0b5b63;border:1px solid #abc7c6}.price-card .price-test-button:hover{background:#e8f5f3}

@media(min-width:1100px){body.fluid-lesson .shellmain{max-width:1440px;width:calc(100% - 48px);padding:0;margin:24px auto 40px}body.fluid-lesson .framewrap{overflow:visible;border:0;border-radius:0;box-shadow:none;background:transparent}body.fluid-lesson .framehead,body.fluid-lesson .shellmain>.footer{display:none}body.fluid-lesson .lessonframe{height:auto;min-height:0;background:transparent}}

.cloud-save-note{margin:0;padding:10px max(20px,calc((100% - 1180px)/2));background:#fff2cf;color:#65450d;font-size:14px;line-height:1.5}.cloud-save-note[hidden]{display:none!important}.account-save-note{font-size:14px;color:#476c67;max-width:620px;margin:4px 0 0}


#paymentStart[hidden]{display:none!important}#paymentStatus{font-size:14px;line-height:1.6;color:#45636d}#paymentStart:disabled{opacity:.6;cursor:wait}

.offer-popup .offer-countdown{margin-top:20px;padding:14px 16px;background:#f5f8f8;border-radius:10px}.offer-popup .offer-countdown-label{display:block;margin-bottom:10px;font-size:12px;color:#546e76}.offer-popup [role=timer]{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.offer-popup .offer-clock-unit{display:grid;gap:2px;text-align:center}.offer-popup .offer-clock-unit b{font-size:24px;line-height:1.2;font-variant-numeric:tabular-nums;letter-spacing:1px;color:#133c47}.offer-popup .offer-clock-unit small{font-size:10px;line-height:1.4;color:#60757b}.offer-popup .offer-foot{justify-content:flex-end;margin-top:10px}.offer-inline .offer-discount strong{font-size:38px}@media(max-width:380px){.offer-popup .offer-discount strong{font-size:50px}.offer-popup [role=timer]{gap:6px}}


/* Compact basket, with the same 44 px control height as sign-out. */
.stunavi-menu-links>a.menu-basket{position:relative;flex:none;width:48px;height:44px;min-height:44px;padding:7px;justify-content:center;border:1px solid #c6d9dc;border-radius:9px;background:#f3f7f7;box-sizing:border-box}
.stunavi-menu-links>a.menu-basket svg{width:28px;height:28px;flex:none}
.stunavi-menu-links .menu-basket [data-basket-count]{position:absolute;right:-5px;top:-6px;min-width:19px;height:19px;padding:0 4px;display:grid;place-items:center;box-sizing:border-box;border-radius:10px;background:#087878;color:#fff;border:2px solid white;font-size:11px;line-height:1}
.stunavi-menu-links>a.menu-basket:hover{background:#e3f0ef;border-color:#087878}
.footer-claim{display:inline-flex;flex-wrap:wrap;gap:4px;margin-left:10px;font-weight:800;font-size:15px;letter-spacing:-.015em}.footer-claim>span:first-child{color:#063f45}.footer-claim>span:last-child{color:#087878}

/* Account-only destinations appear after verified sign-in. */
.stunavi-menu [hidden]{display:none!important}
.stunavi-menu.member-session [data-nav-portal]{background:#e4f3ef;color:#175d50;border-color:#c0ddd4}
.stunavi-menu.member-session [data-nav-coach]{background:#eeeafa;color:#513c82;border-color:#d8ceed}
.stunavi-menu.member-session [data-nav-portal]:is(:hover,[aria-current=page]){background:#cee9df;color:#104e40;border-color:#86b6a5}
.stunavi-menu.member-session [data-nav-coach]:is(:hover,[aria-current=page]){background:#e0d7f4;color:#442d73;border-color:#b9a6dc}

/* Stable shared shell for empty accounts and recoverable loading errors. */
.access-state{max-width:820px;margin:36px auto;padding:30px;border:1px solid #cddfe3;border-radius:16px;background:#fff;box-sizing:border-box}
.access-state h1,.access-state h2{font-size:clamp(24px,3vw,32px);line-height:1.2;margin:10px 0 16px;color:#123e4c;letter-spacing:-.025em}
.access-state p{font-size:16px;line-height:1.6;color:#45616d;max-width:65ch}
.access-state-actions{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 0}.access-state-actions .button{width:auto;font-size:15px;padding:10px 15px}
.access-free-card{background:#eef8f4;border:1px solid #c8e3d7;border-radius:10px;margin-top:24px;padding:18px}.access-free-card p{margin:6px 0 10px}.access-free-card a{color:#126553;font-weight:650}
.learning-state-page .coach-hero{padding:30px 0}.learning-state-page .coach-hero h1{font-size:clamp(28px,4vw,40px)}
.learning-state-page main{padding-top:0!important}.learning-state-page .coach-hero .hero-coach{display:none}
.portal-load-error{padding:20px;border:1px solid #d7dfe6;border-radius:12px;background:#f5f8fa;margin:16px 0}.portal-load-error h2{font-size:23px}.portal-load-error .button{margin:8px 8px 0 0;font-size:15px}
@media(max-width:600px){.access-state{margin:20px 12px;padding:22px}.access-state-actions{gap:8px}.access-state-actions .button{flex:1 1 auto}}
.learning-state-page .page-section-menu{display:none}.learning-state-page .section-navigation-layout{display:block}

/* The first document has a native mobile menu, even before scripts are ready. */
.menu-fallback{display:none}
@media(max-width:1100px){
 .stunavi-menu .stunavi-menu-inner{min-height:70px;gap:10px;padding:10px 16px}
 .stunavi-menu .menu-toggle{display:flex;min-height:46px;background:#0b6970;color:#fff;border:1px solid #0b6970;touch-action:manipulation}
 .stunavi-menu .menu-toggle:hover,.stunavi-menu .menu-toggle[aria-expanded=true]{background:#084e55;border-color:#084e55;color:#fff}
 .stunavi-menu .stunavi-menu-links,.menu-fallback-links{position:absolute;top:100%;left:0;right:0;width:100%;max-height:calc(100vh - 110px);max-height:calc(100svh - 110px);overflow-y:auto;overscroll-behavior:contain;padding:12px 16px 18px;background:#fff;border-bottom:1px solid #c6d9dc;box-shadow:0 12px 20px #0b2d3a14}
 .stunavi-menu .stunavi-menu-links{margin:0;gap:5px}
 .menu-fallback{display:block;margin-left:auto}
 .menu-fallback>summary{list-style:none}
 .menu-fallback>summary::-webkit-details-marker{display:none}
 .menu-fallback-links{box-sizing:border-box;display:grid;gap:5px}
 .menu-fallback-links a{display:flex;align-items:center;min-height:46px;padding:10px 12px;border-radius:9px;text-decoration:none;color:#23434e;font-weight:600}
 .menu-fallback-links a:hover{background:#e6f5f2;color:#075c62}
}