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32px);max-height:calc(100vh - 40px);box-shadow:0 20px 90px var(--ks-15193844)}dialog::backdrop{background:var(--ks-20233488);backdrop-filter:blur(3px)}dialog h2{font-size:28px;margin:0 0 20px}dialog p{margin:14px 0;line-height:1.6;color:var(--kt-666d79)}dialog li{margin:12px 0}dialog .button{margin-top:16px}.modal-close{position:absolute;right:12px;top:8px;border:0;background:none;color:var(--kt-858a93);font-size:30px;width:38px;height:38px}.gate-price{text-align:center}.gate-price strong{font-size:40px;color:var(--blue)}.gate-list{list-style:none;padding:0}.gate-list li:before{content:'✓';color:var(--blue);font-weight:900;margin-right:10px}.close-modal{display:block;margin:18px auto 0}dialog:has(.gate-list){text-align:center}
@media(min-width:1500px){.catalog-content{max-width:1400px}.subject-grid{grid-template-columns:repeat(5,200px)}}
@media(max-width:1200px){.hero h1{font-size:46px;line-height:1.12}.hero-inner{grid-template-columns:55% minmax(0,1fr)}.students-label{font-size:22px;padding:8px 18px}.hero-stats>div{padding:8px}.hero-stats span{font-size:12px}.presentation-grid{grid-template-columns:47% 51%;gap:2%}.presentation-grid h2{font-size:32px}.feature-grid>div{font-size:18px;gap:10px}.subject-grid{grid-template-columns:repeat(4,1fr);gap:24px 16px}.course-layout{grid-template-columns:minmax(0,1fr) 260px;gap:20px}.lesson-block{padding:0 16px}.lesson h2{font-size:25px}.course-heading .button{right:290px}.included{padding:25px;grid-template-columns:30% 70%}.included h2{font-size:22px}.included li{font-size:14px}.pricing-section h1,.pricing-section>.container>h2{font-size:46px}}
@media(max-width:1000px){.professionals{margin-right:0}.hero-inner{padding-top:50px;padding-bottom:50px}.hero h1{font-size:40px}.hero-cta{gap:20px}.hero-cta .button{font-size:14px;padding:12px}.hero-stats{gap:6px}.hero-stats b{font-size:19px}.hero-stats span{font-size:10px}.students-label{font-size:18px}.subject-grid{grid-template-columns:repeat(3,1fr)}.course-layout{display:flex;flex-direction:column-reverse}.contents{position:static;width:100%;display:none}.lesson{width:100%}.course-heading .button{right:0}.course-content{padding-top:30px}.chapter-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.chapter-card>div{padding:12px}.chapter-card strong{font-size:15px}.included{grid-template-columns:1fr;gap:20px}.price-card{padding:25px 12px}.price-card h2{font-size:23px}.price-card .button{padding:10px;font-size:14px}.program-benefits{gap:16px;font-size:14px}.alfa-columns{gap:20px}.footer-inner{gap:30px}}
@media(max-width:759px){h1{font-size:38px}h2{font-size:30px}.container{padding-left:24px;padding-right:24px}.site-header{height:56px}.header-inner{padding:0 20px}.header-nav{margin-left:auto;gap:12px}.header-nav .professionals,.header-nav .login-link{display:none}.header-nav .phone{font-size:14px;gap:8px}.header-nav .phone .icon{width:20px}.menu-toggle{display:block;margin-right:-8px;margin-left:12px}.hero-inner{display:flex;flex-direction:column;padding-top:20px;padding-bottom:60px;gap:32px;text-align:center;min-height:0}.hero-copy{padding:0;max-width:440px}.hero h1{font-size:54px;line-height:60px;letter-spacing:-.5px}.schoolyear{font-size:16px;justify-content:center;margin-top:18px}.hero-cta{flex-direction:column;gap:12px;margin-top:24px}.hero-cta .button{font-size:18px;padding:14px 22px}.starting>span{font-size:16px}.hero-visual{width:390px;max-width:100%}.students-label{font-size:26px;padding:8px 30px;margin-top:-40px}.hero-stats{display:none}.students-caption{margin-top:8px}.presentation-grid{display:flex;flex-direction:column;gap:30px}.presentation-grid>a{margin:0}.app-presentation{padding:45px 0}.presentation-grid h2{font-size:30px}.feature-grid{margin:30px 0;gap:25px 20px}.feature-grid>div{font-size:16px}.feature-grid>div>span{font-size:30px;min-width:32px}.programs{padding-top:50px;padding-bottom:35px}.program-benefits{flex-direction:column;gap:15px;margin-bottom:25px}.subject-ribbon{margin:0 -24px 20px;padding-left:24px;padding-right:24px}.alfa-section{padding-top:40px;padding-bottom:40px}.alfa-columns{grid-template-columns:1fr;gap:24px;margin-top:25px}.alfa-preview{padding:25px}.pricing-section{padding-top:24px;padding-bottom:30px}.pricing-section h1,.pricing-section>.container>h2{font-size:38px;line-height:1.15}.price-toggle{margin-bottom:28px;margin-top:25px}.price-cards{display:flex;flex-direction:column;gap:28px}.price-card{width:100%;min-height:260px;padding:25px 22px}.price-card.featured{order:-1;margin-top:44px;min-height:340px}.price{margin-top:20px}.price-total{margin-top:16px;min-height:0}.price-card .button{font-size:16px}.included{padding:25px 20px;margin-top:26px}.included ul{display:flex;flex-direction:column;gap:12px}.included h2{font-size:26px}.included li{font-size:15px;padding:4px 0}.fineprint{line-height:1.6}.faq{padding-top:36px;padding-bottom:30px}.faq summary{font-size:14px;padding:22px 16px}.faq details p{font-size:14px}.footer{padding:35px 24px 70px}.footer-inner{grid-template-columns:1fr 1fr;gap:30px 16px}.footer-inner>div:last-child{grid-column:1 / -1}.footer h3{font-size:18px}.sidebar{display:none}.learning-mobile{display:block;position:sticky;top:0;z-index:20}.learning-main{margin:0}.catalog-content{padding:20px 24px 50px}.catalog-toolbar{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}.level-select{font-size:24px;gap:28px;padding:5px 12px}.catalog-toolbar .search-form{width:100%;min-height:46px}.search-form input{padding:12px}.search-form button{padding:10px}.subject-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 20px}.subject-card{min-height:176px}.subject-card>div{height:112px}.subject-card>strong{min-height:64px;padding:20px 5px;font-size:14px}.learning-faq{margin-top:48px}.learning-faq h2{font-size:28px}.assistant{width:52px;height:52px;font-size:30px;bottom:12px;right:12px}.chapters-content{padding:28px 24px 60px}.chapters-content>h1{font-size:27px;line-height:1.22;margin-bottom:28px}.theme h2{font-size:21px}.chapter-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.chapter-card>div{min-height:116px;padding:14px}.chapter-card strong{font-size:14px}.chapter-card small{padding:18px 14px}.theme{margin-bottom:32px}.course-breadcrumb{font-size:12px;gap:5px;padding:12px 16px}.course-content{padding:26px 12px 50px}.course-heading{min-height:125px;padding-left:8px}.course-heading h1{font-size:28px}.course-heading .button{right:6px;bottom:16px}.lesson{padding:24px 14px;border-radius:12px}.lesson-meta{font-size:11px;padding:0 2px 10px}.lesson h2{font-size:25px;gap:8px;margin-bottom:22px}.lesson h2>span{font-size:18px;padding:3px 9px;line-height:28px}.lesson h2>b{padding:3px 6px}.lesson-block{padding:0 4px}.lesson-block p{font-size:15px}.tip{padding:10px;gap:10px}.tip>span{min-width:35px;font-size:30px}.tip small{font-size:10px}.example{padding:12px}.number-table th{font-size:11px;padding:8px 5px}.formula{font-size:18px}.auth-page{padding:34px 24px 24px;min-height:calc(100dvh - 56px)}.auth-page>h1{font-size:28px}.auth-center{margin-top:55px}.auth-submit{margin-top:30px}.auth-notice{font-size:11px}.auth-switch{font-size:14px}.register-intro{margin-top:28px;max-width:280px}.profile-choices{gap:8px;min-height:260px;width:100%;justify-content:center}.profile-choices button{min-width:0;flex:1;font-size:14px;padding:6px;gap:14px}.profile-choices span{font-size:60px}.level-step h2{font-size:22px}.level-grid{grid-template-columns:repeat(3,1fr);gap:12px}.level-grid button{padding:16px 10px}.register-method{margin:55px auto 25px}.search-content{padding:35px 24px}.search-content h1{font-size:28px}.search-results>a{padding:20px 15px;gap:14px}.empty-state{padding:65px 24px}.empty-state h1{font-size:28px}.prototype-badge{font-size:10px;bottom:8px;left:8px}dialog{padding:40px 24px 26px}dialog h2{font-size:26px}dialog p,dialog li{font-size:15px}}
@media(max-width:440px){.hero h1{font-size:42px;line-height:47px}.hero-copy{max-width:360px}.schoolyear{font-size:14px}.students-label{font-size:22px;padding:8px 14px}.hero-visual{margin-top:0}.header-nav .phone{font-size:12px;gap:6px}.header-nav .phone .icon{width:18px}.logo img{width:95px}.price-toggle button{padding:7px 9px}.price-toggle small{font-size:9px}.feature-grid>div{font-size:15px;gap:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* Main receives programmatic focus after navigation; interactive controls keep their focus rings. */
#main:focus{outline:none}