:root{--ink:#172e35;--muted:#63757a;--orange:#ffb456;--paper:#f5f7f8;--line:#dfe6e8}*{box-sizing:border-box}body{margin:0;background:#e7edef;color:var(--ink);font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}.app{max-width:1000px;margin:auto;min-height:100vh;background:var(--paper);padding-bottom:105px}header{display:flex;align-items:center;justify-content:space-between;padding:22px 32px;background:#fff;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;font-size:14px;letter-spacing:2px;font-weight:700}.monogram{font:bold 42px Georgia;color:var(--ink);line-height:1}.brand-small{display:block;font-size:10px;letter-spacing:1.8px;font-weight:500}.preview{font-size:10px;letter-spacing:1.4px;color:var(--muted);border:1px solid var(--line);padding:5px 8px;border-radius:5px}main{padding:28px 32px}.intro{display:grid;grid-template-columns:1.4fr 1fr;background:var(--ink);color:white;border-radius:24px;overflow:hidden;min-height:290px}.intro-copy{padding:34px}.eyebrow{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--muted)}.intro .eyebrow{color:var(--orange)}h1{font:normal 42px/1.12 Georgia,serif;letter-spacing:-1px;margin:16px 0}h2{font-size:25px;line-height:1.25;letter-spacing:-.5px}h3{line-height:1.25;font-size:23px;margin:12px 0}.intro p{color:#d8e2e5;font-size:15px;max-width:340px}.intro img{width:100%;height:100%;object-fit:cover;object-position:center 23%;max-height:340px}.section-head{display:flex;justify-content:space-between;align-items:baseline;margin:30px 0 15px}.section-head h2{margin:0}.count,.meta{font-size:13px;color:var(--muted)}.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.card{display:block;background:white;border:1px solid var(--line);border-radius:18px;padding:24px;transition:transform .15s,box-shadow .15s}.card:hover{transform:translateY(-3px);box-shadow:0 10px 25px #172e3510}.card-top{display:flex;align-items:center;justify-content:space-between}.number{font:italic 32px Georgia;color:#83969c}.tag{font-size:12px;border-radius:30px;background:#eef2f3;padding:4px 10px}.card p{font-size:15px;color:var(--muted);margin:12px 0 22px}.card-footer{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:14px;font-size:14px}.card:nth-child(1){border-top:4px solid #ffb456}.card:nth-child(2){border-top:4px solid #4d929c}.card:nth-child(3){border-top:4px solid #91a8cb}.card:nth-child(4){border-top:4px solid #bb9ac0}.extras{display:grid;grid-template-columns:1fr 1fr;gap:14px}.extra{background:#e8eef0;border-radius:16px;padding:22px}.extra h3{font-size:20px}.extra .eyebrow{font-size:11px}.back{display:inline-block;font-size:14px;margin-bottom:20px;color:var(--muted)}.detail-hero{padding:30px;background:var(--ink);color:white;border-radius:22px}.detail-hero h1{max-width:680px}.detail-hero .eyebrow{color:var(--orange)}.detail-hero p{max-width:620px;color:#d8e2e5}.detail-body{display:grid;grid-template-columns:1.5fr 1fr;gap:24px;margin-top:24px}.panel{padding:25px;background:white;border:1px solid var(--line);border-radius:18px}.panel h2{margin-top:0;font-size:22px}.program{list-style:none;margin:0;padding:0}.program li{padding:13px 0;border-bottom:1px solid var(--line);display:flex;gap:13px}.program li:last-child{border:0}.program b{color:#8a9b9f;font-size:13px;min-width:22px;padding-top:3px}.primary{background:var(--ink);color:white;border:0;border-radius:12px;padding:14px 22px;font-weight:600;display:block;text-align:center;width:100%}.secondary{display:inline-block;margin-top:20px;border:1px solid var(--line);padding:11px 20px;border-radius:12px;font-size:14px}.availability{font-size:14px;color:var(--muted)}.empty{max-width:580px;margin:50px auto;text-align:center;padding:38px 28px;background:white;border:1px solid var(--line);border-radius:24px}.empty-icon{font:40px Georgia;color:#6f919a}.empty p{color:var(--muted)}.empty h1{font-size:32px}.empty .primary{margin-top:24px}.review{display:flex;justify-content:space-between;gap:16px;align-items:center;background:white;border:1px solid var(--line);border-radius:16px;padding:20px;margin:12px 0}.review h3{font-size:18px;margin:4px 0}.review p{font-size:14px;margin:0;color:var(--muted)}.play{width:44px;height:44px;border-radius:50%;background:#edf2f3;display:grid;place-items:center;flex-shrink:0;color:#72888f}.note{font-size:14px;color:var(--muted);padding:15px 0}.author{display:flex;gap:20px;align-items:center;margin:28px 0 0}.author img{width:64px;height:64px;border-radius:50%;object-fit:cover;object-position:50% 20%}.author p{font-size:14px;color:var(--muted);margin:0}.author strong{display:block;font-size:16px;color:var(--ink)}nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);max-width:1000px;width:100%;display:grid;grid-template-columns:repeat(4,1fr);background:#fffffff5;backdrop-filter:blur(15px);border-top:1px solid var(--line);padding:10px 12px calc(10px + env(safe-area-inset-bottom))}nav a{font-size:12px;color:var(--muted);text-align:center;display:flex;align-items:center;flex-direction:column;gap:2px;padding:3px;border-radius:10px}nav a span{font-size:25px;line-height:1.2}nav a.active{background:#edf2f3;color:var(--ink);font-weight:600}dialog{border:0;border-radius:22px;padding:32px;max-width:420px;width:calc(100% - 32px);color:var(--ink)}dialog::backdrop{background:#172e3580}dialog p{color:var(--muted)}.close{position:absolute;right:10px;top:5px;border:0;background:none;font-size:28px;color:var(--muted)}:focus-visible{outline:3px solid #df8823;outline-offset:4px}@media(max-width:600px){header{padding:17px 20px}.brand{font-size:12px;gap:8px}.brand-small{font-size:9px}.preview{font-size:8px;letter-spacing:.5px;padding:4px 5px}main{padding:20px}.intro{min-height:230px;grid-template-columns:1.25fr 1fr;border-radius:18px}.intro-copy{padding:23px 18px}.intro h1{font-size:30px;margin:14px 0}.intro p{font-size:13px}.intro .eyebrow{font-size:10px;letter-spacing:1px}.intro img{max-height:none;min-height:100%}.grid{grid-template-columns:1fr;gap:13px}.card{padding:22px}.section-head h2{font-size:23px}.extras{grid-template-columns:1fr}.detail-body{grid-template-columns:1fr}.detail-hero{padding:24px}.detail-hero h1{font-size:34px}.empty{margin:20px 0;padding:30px 22px}.section-head{margin-top:26px}h3{font-size:23px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}

/* Established Antonova identity: original logo, orange, white, graphite. */
:root{--ink:#353535;--muted:#686868;--orange:#f58220;--paper:#fafafa;--line:#e7e7e7}body{background:#ededed}.brand-logo{width:230px;height:auto;display:block}header{padding-top:15px;padding-bottom:15px}.intro{background:white;color:var(--ink);border:1px solid var(--line);border-left:5px solid var(--orange)}.intro .eyebrow,.detail-hero .eyebrow{color:#b85400}.intro p{color:var(--muted)}h1{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-weight:650;letter-spacing:-1.5px}.card:nth-child(n){border-top:3px solid var(--orange)}.tag{background:#fff1e5;color:#934500}.extras .extra{background:white;border:1px solid var(--line);border-left:3px solid var(--orange)}.primary{background:var(--orange);color:#282828}.detail-hero{background:white;color:var(--ink);border:1px solid var(--line);border-top:4px solid var(--orange)}.detail-hero p{color:var(--muted)}nav a.active{background:#fff0e3;color:#934500}.play{background:#fff0e3;color:#934500}.empty-icon{color:#b85400}.intro h1{font-size:38px}.intro-copy{padding:30px}.intro img{max-height:310px}.number{color:#909090}nav a{font-size:14px}.meta,.count{font-size:14px}.intro p{font-size:16px}.eyebrow{font-size:14px}@media(max-width:600px){.brand-logo{width:190px}.intro-copy{padding:22px 15px}.intro h1{font-size:27px;letter-spacing:-.8px}.intro p{font-size:14px}.intro .eyebrow{font-size:12px}.intro{grid-template-columns:1.2fr 1fr}.intro img{max-height:290px}.preview{font-size:10px}nav a{font-size:12px}.intro h1{line-height:1.2}.detail-hero h1{font-size:32px}.extra .eyebrow{font-size:13px}}

nav{grid-template-columns:repeat(5,minmax(0,1fr))}nav a{font-size:12px}.consult-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.consult-grid h3,.topic-panel h3{margin-top:0;font-size:22px}.format-list{padding-left:24px;margin-bottom:0}.format-list>li{padding:7px 0}.topic-list{padding-left:22px;margin:12px 0 0}.topic-list li{padding:7px 0}.topic-list li::marker{color:#b85400}.topics-heading{margin:32px 0 18px}.topic-panel{margin-bottom:16px}.consult-grid .topic-list{font-size:16px}@media(max-width:600px){.consult-grid{grid-template-columns:1fr}nav{padding-left:4px;padding-right:4px}nav a{font-size:10px;overflow-wrap:anywhere}nav a span{font-size:24px}.topic-panel{padding:22px}}

/* Learner area keeps the approved palette and type scale */
.demo-banner{background:#fff1e5;border:1px solid #f5cfaf;padding:12px 16px;border-radius:12px;font-size:14px;color:#934500}.account-heading{display:flex;align-items:center;justify-content:space-between;gap:15px}.account-heading .secondary{margin:0;flex-shrink:0}.owned-course{max-width:600px;margin-top:24px}.owned-course h2{margin-top:20px}.owned-course progress{width:100%;height:9px;accent-color:var(--orange);margin-bottom:24px}.continue-course{margin-bottom:24px}.lesson-list{list-style:none;padding:0;margin:0}.lesson-list li+li{border-top:1px solid var(--line)}.lesson-list a{display:flex;gap:14px;align-items:center;padding:16px 0}.lesson-list a>span:nth-child(2){flex:1}.lesson-list small,.lesson-unavailable small{display:block;font-size:13px;color:var(--muted);margin-top:4px}.lesson-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#fff1e5;color:#934500;flex-shrink:0}.lesson-mark.done{background:#e7f0e5;color:#416439}.lesson-unavailable{display:block;padding:16px 0;color:var(--muted)}.video-frame{position:relative;width:100%;aspect-ratio:16/9;background:#ececec;border-radius:14px;overflow:hidden}.video-frame iframe{width:100%;height:100%;border:0}.assignment{margin-top:22px}.lesson-actions{display:flex;flex-direction:column;align-items:stretch;gap:12px;margin-top:24px}.lesson-actions .secondary{margin-top:0;text-align:center}.feedback{border-top:1px solid var(--line);padding-top:18px;margin-top:18px}.feedback summary{cursor:pointer;color:#934500;font-size:14px}.feedback label{display:block;margin-top:18px}.feedback textarea,input[type=email]{display:block;width:100%;font:inherit;color:var(--ink);background:white;border:1px solid #c7c7c7;border-radius:10px;padding:12px;margin-top:8px}.feedback textarea{min-height:110px;resize:vertical}.terms-check{display:flex;align-items:flex-start;gap:10px;margin:20px 0;font-size:14px}.terms-check input{margin-top:5px}.primary:disabled,.secondary:disabled{opacity:.6;cursor:wait}.feedback [role=status],[data-status]{font-size:14px;color:var(--muted)}@media(max-width:600px){.account-heading{align-items:flex-start}.account-heading h1{font-size:30px}.account-heading .secondary{padding:9px 12px;font-size:13px}}

.account-heading>div:last-child:has(button){display:flex;gap:8px;flex-wrap:wrap}.account-heading .secondary{margin:0}.panel>[data-demo-result]+.primary,.panel>[data-demo-result]+.secondary+.primary{margin-top:18px}@media(max-width:600px){.account-heading{flex-direction:column}.account-heading>div:last-child:has(button){width:100%}.account-heading h1{margin-bottom:8px}}

.feedback-text{white-space:pre-wrap;overflow-wrap:anywhere}

.review-card{margin:18px 0}.review-card h3{margin:10px 0 18px}.review-card blockquote{margin:0;line-height:1.65;white-space:pre-line}
.free-intro{max-width:700px}.free-intro>p{color:var(--muted)}.free-topics{position:static;display:flex;flex-wrap:wrap;gap:8px;background:none;border:0;padding:0;margin:22px 0;box-shadow:none;max-width:none}.free-topics a{display:inline-flex;flex:none;align-items:center;border:1px solid var(--line);border-radius:24px;padding:9px 15px;font-size:14px;color:var(--ink);background:#fff}.free-topics a[aria-current=page]{background:var(--orange);border-color:var(--orange);font-weight:600}.free-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.free-card{display:flex;flex-direction:column}.free-card h2{margin:12px 0;font-size:24px;line-height:1.25}.free-card>p{color:var(--muted);margin:0 0 20px}.free-card-footer{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;gap:12px;align-items:center;justify-content:space-between}.free-read{background:var(--orange);border-radius:10px;padding:10px 15px;font-weight:600;white-space:nowrap}.free-read:focus-visible,.free-topics a:focus-visible{outline:3px solid var(--ink);outline-offset:3px}.free-article{max-width:760px;margin:auto}.free-article-header{display:block;background:none;border:0;padding:0 0 16px}.free-article-header h1{font-size:38px;margin:15px 0}.free-article-header p{color:var(--muted)}.free-article-body{padding:28px;overflow-wrap:anywhere}.free-article-body p{margin:0 0 20px}.free-article-body li{margin-bottom:10px}.free-article-body section+section{margin-top:28px}.free-practice{background:#fff3e1;border-radius:14px;padding:22px}.free-practice h2{margin:10px 0 14px}.free-practice ol{padding-left:22px;margin-bottom:0}.free-limit{font-size:14px;color:var(--muted);border-top:1px solid var(--line);padding-top:20px;margin-top:24px!important}.free-source{font-size:12px;margin-bottom:0!important}.free-source a{display:block;text-decoration:underline;margin-top:8px}.free-next{max-width:760px;margin:20px auto}.free-next h2{font-size:22px}.free-next p{color:var(--muted)}.free-next .secondary{display:block;margin-top:12px}.free-bottom-back{display:block;max-width:760px;margin:24px auto 0}@media(max-width:600px){.free-grid{grid-template-columns:1fr}.free-article-header h1{font-size:32px;line-height:1.15}.free-article-body{padding:21px}.free-practice{padding:17px}.free-card-footer{flex-wrap:wrap}.free-topics{justify-content:flex-start}.free-topics a{font-size:13px;padding:9px 12px;min-height:40px}.free-card h2{font-size:23px}}

.free-topics{inset:auto;left:auto;right:auto;top:auto;bottom:auto;transform:none;width:auto;z-index:auto;justify-content:flex-start;overflow:visible}.free-topics a{flex-direction:row;min-width:0}

/* App-owned navigation remains outside embedded course documents. */
#app-global-back{flex-shrink:0;margin:0;padding:8px 6px;border:0;background:transparent;font:inherit;font-size:13px;cursor:pointer}.app>header{gap:12px}button.back{border:0;background:transparent;font:inherit;cursor:pointer}
.app>header{position:sticky;top:0;z-index:20;flex-wrap:wrap}#app-global-back{flex-basis:100%;text-align:left}.app>header .brand{min-width:0}

#app-global-back[hidden]{display:none}main>.back{display:none}.app>header{position:static}.pdf-pages{width:100%;min-width:0}.pdf-pages figure{margin:20px 0}.pdf-pages img{display:block;width:100%;height:auto;max-width:100%;background:white}.pdf-pages figcaption{text-align:center;color:var(--muted);font-size:13px;margin-top:8px}.pdf-actions{display:flex;gap:12px;flex-wrap:wrap}.pdf-actions .primary{width:auto}.pdf-actions .secondary{margin:0}.pdf-actions a{flex:1;min-width:140px;text-align:center}

.pdf-reader-toolbar{display:none}.pdf-reader-open .pdf-reader{position:fixed;inset:0;z-index:100;background:#eee;overflow:auto;padding:0 10px calc(24px + env(safe-area-inset-bottom));overscroll-behavior:contain}.pdf-reader-open .pdf-reader-toolbar{display:flex;position:sticky;top:0;z-index:2;gap:12px;justify-content:space-between;background:white;padding:10px 0}.pdf-reader-toolbar .secondary{margin:0}.pdf-reader-open .pdf-pages{max-width:1000px;margin:auto}.pdf-reader-open .app>nav{display:none}

.pdf-reader-open,.pdf-reader-open body{overflow:hidden;overscroll-behavior:none}.pdf-reader-open .pdf-reader{height:var(--tg-viewport-stable-height,100dvh);bottom:auto;-webkit-overflow-scrolling:touch;touch-action:pan-y pinch-zoom}.pdf-reader-open .pdf-reader-toolbar{min-height:56px;padding-top:calc(10px + var(--tg-content-safe-area-inset-top,0px))}.pdf-reader-toolbar button{touch-action:manipulation}

.school-controls{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;margin:18px 0}.school-controls label{display:flex;align-items:center;gap:8px;white-space:nowrap}.school-controls select{font:inherit;padding:8px;border:1px solid #ddd;border-radius:8px}.school-controls .secondary{min-width:0;margin:0}@media(max-width:450px){.school-controls{gap:6px}.school-controls label{font-size:13px;gap:4px}.school-controls .secondary{padding:10px 8px}}

.school-samples{display:grid;gap:12px}.school-samples a{white-space:normal;text-align:left}