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a.nav-link:hover,.menu__panel a.nav-link[aria-current=page]{background:var(--c-surface-2)}.menu__panel .audience-switch{border-top:1px solid var(--c-border);gap:.5rem;margin-top:.75rem;padding-top:.75rem;display:grid}.menu__panel .audience-switch .btn{box-shadow:none}@media (width<=47.99rem){.site-header{position:sticky}.menu{position:static}.menu__panel{border:0;border-top:1px solid var(--c-border);width:auto;height:calc(100dvh - 4.25rem);box-shadow:none;padding:var(--sp-4) var(--gutter) var(--sp-6);border-radius:0;position:absolute;top:100%;left:0;right:0;overflow-y:auto}html.menu-open{overflow:hidden}}@media (width>=48rem){.aud-toggle{display:inline-flex}}@media (width>=64rem){.header-cta{display:inline-flex}.subnav a.subnav__cta{display:none}}@media (width>=80rem){.menu{display:none}.site-nav{display:block}}.site-nav a,.btn,.aud-toggle a{white-space:nowrap}.subnav{border-bottom:1px solid var(--c-border);background:var(--c-surface)}.subnav ul{gap:var(--sp-1);padding:var(--sp-2) 0;scrollbar-width:none;list-style:none;display:flex;overflow-x:auto}.subnav ul::-webkit-scrollbar{display:none}.subnav a{min-height:2.5rem;padding:0 var(--sp-4);border-radius:var(--radius-pill);color:var(--c-muted);font-size:var(--fs-sm);white-space:nowrap;align-items:center;font-weight:600;text-decoration:none;display:inline-flex}.subnav a:hover{background:var(--c-primary-soft);color:var(--c-text)}.subnav a.subnav__cta{background:var(--c-primary);color:var(--c-on-color);margin-left:auto}.section{padding-block:var(--sp-7)}@media (width>=48rem){.section{padding-block:var(--sp-8)}}.section--alt{background:var(--c-surface-2)}.section__head{max-width:48rem;margin-bottom:var(--sp-6)}.section__head p{color:var(--c-muted);margin-top:var(--sp-3);font-size:var(--fs-lg)}.hero{isolation:isolate;padding-block:var(--sp-7) var(--sp-6);background:radial-gradient(42rem 22rem at 92% -20%, color-mix(in srgb, var(--c-primary) 22%, transparent), transparent 70%), radial-gradient(32rem 18rem at -5% 0%, #a855f724, transparent 70%);position:relative;overflow:hidden}@media (width>=48rem){.hero{padding-block:var(--sp-8) var(--sp-7)}}.hero__eyebrow{margin-bottom:var(--sp-4);font-size:var(--fs-sm);letter-spacing:.06em;text-transform:uppercase;color:var(--c-primary);font-weight:700;display:inline-flex}.hero h1{max-width:20ch}.hero__lead{margin-top:var(--sp-4);font-size:var(--fs-lg);color:var(--c-muted);max-width:44rem}@media (width>=48rem){.hero__lead{font-size:1.25rem}}.hero .btn-row{margin-top:var(--sp-6)}.hero-home{isolation:isolate;background:radial-gradient(50rem 30rem at 85% 0%, #a855f759, transparent 65%), radial-gradient(40rem 26rem at 0% 100%, #6366f159, transparent 65%), radial-gradient(30rem 20rem at 60% 110%, #f9731638, transparent 70%), var(--ink);color:var(--ink-text);padding-block:var(--sp-7) var(--sp-7);position:relative;overflow:hidden}.hero-home:after{content:"";z-index:-1;pointer-events:none;background-image:linear-gradient(#ffffff0d 1px,#0000 1px),linear-gradient(90deg,#ffffff0d 1px,#0000 1px);background-size:56px 56px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(at 50% 0,#000 30%,#0000 75%);mask-image:radial-gradient(at 50% 0,#000 30%,#0000 75%)}@media (width>=48rem){.hero-home{padding-block:6.5rem var(--sp-8)}}.hero-home__inner{position:relative}.hero-home .pill{color:var(--ink-text);border-color:var(--ink-line);background:#ffffff14}.hero-home h1{font-size:var(--fs-hero);margin-top:var(--sp-5);letter-spacing:-.045em;max-width:16ch;line-height:1.02}.hero-home__lead{margin-top:var(--sp-5);font-size:var(--fs-lg);color:var(--ink-muted);max-width:40rem}@media (width>=48rem){.hero-home__lead{font-size:1.25rem}}.hero-home__deco{pointer-events:none;display:none;position:absolute;inset:0}@media (width>=64rem){.hero-home__deco{display:block}}.bubble{font-family:var(--font-head);color:var(--ink-text);border:1px solid var(--ink-line);backdrop-filter:blur(10px);background:#ffffff14;border-radius:1.1rem 1.1rem 1.1rem .3rem;padding:.6rem 1.1rem;font-size:1.15rem;font-weight:650;position:absolute;box-shadow:0 20px 40px -20px #0009}.bubble--1{top:16%;right:8%;transform:rotate(4deg)}.bubble--2{border-radius:1.1rem 1.1rem .3rem;top:36%;right:22%;transform:rotate(-5deg)}.bubble--3{background:linear-gradient(135deg,#6366f180,#a855f773);top:56%;right:6%;transform:rotate(3deg)}@media (prefers-reduced-motion:no-preference){.bubble{animation:7s ease-in-out infinite floaty}.bubble--2{animation-delay:-2.5s}.bubble--3{animation-delay:-5s}}@keyframes floaty{50%{translate:0 -10px}}.choose{gap:var(--sp-4);margin-top:var(--sp-7);display:grid}@media (width>=48rem){.choose{grid-template-columns:1fr 1fr;max-width:60rem}}.choose__card{gap:var(--sp-3);padding:var(--sp-6) var(--sp-5);border-radius:var(--radius);color:var(--ink-text);border:1px solid var(--ink-line);backdrop-filter:blur(12px);transition:transform .25s var(--ease), border-color .25s, background-color .25s;background:linear-gradient(#ffffff17,#ffffff0a);flex-direction:column;text-decoration:none;display:flex;position:relative;container-type:inline-size}.choose__card:hover{background-color:#ffffff0a;border-color:#ffffff59}@media (prefers-reduced-motion:no-preference){.choose__card:hover{transform:translateY(-4px)}}.choose__card h3{letter-spacing:-.03em;font-size:clamp(1.5rem,1.2rem + 1.2vw,2rem)}.choose__card p{color:var(--ink-muted)}.choose__icon{color:#fff;border-radius:.9rem;width:3rem;height:3rem;padding:.7rem}.choose__card.aud-b2c .choose__icon{background:linear-gradient(135deg,#f97316,#ec4899)}.choose__card.aud-b2b .choose__icon{background:linear-gradient(135deg,#3b82f6,#6366f1)}.choose__cta{padding-top:var(--sp-2);color:#fff;gap:var(--sp-2);align-items:center;margin-top:auto;font-weight:650;display:inline-flex}.choose__cta svg{width:1.2rem;height:1.2rem;transition:transform .2s var(--ease)}.choose__card:hover .choose__cta svg{transform:translate(4px)}.card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);padding:var(--sp-5);box-shadow:var(--shadow);gap:var(--sp-3);transition:transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s;flex-direction:column;display:flex;position:relative;container-type:inline-size}@media (width>=48rem){.card{padding:var(--sp-6)}}.card__icon{background:var(--c-primary-soft);width:2.75rem;height:2.75rem;color:var(--c-primary);border-radius:.85rem;padding:.65rem}.card p{color:var(--c-muted)}.card .btn{align-self:flex-start;margin-top:auto}.card--link{color:var(--c-text);text-decoration:none}.card--link:hover{border-color:color-mix(in srgb, var(--c-primary) 45%, var(--c-border));box-shadow:var(--shadow-lg)}@media (prefers-reduced-motion:no-preference){.card--link:hover{transform:translateY(-4px)}}.card--link:hover .link-arrow svg{transform:translate(4px)}@container (width>=28rem){.card--media{flex-direction:row;align-items:flex-start}}.card--feature{background:radial-gradient(30rem 18rem at 100% 0%, #a855f759, transparent 70%), radial-gradient(24rem 16rem at 0% 100%, #f9731640, transparent 70%), var(--ink);color:var(--ink-text);border-color:#0000;justify-content:flex-end;min-height:16rem}.card--feature h3{font-size:var(--fs-2xl);letter-spacing:-.03em}.card--feature p{color:var(--ink-muted);font-size:var(--fs-lg);max-width:32rem}.card--feature .card__icon{color:#fff;background:#ffffff1a;margin-bottom:auto}.course-card{min-height:15rem;overflow:hidden}.course-card__code{font-family:var(--font-head);letter-spacing:-.04em;background:var(--grad-brand);color:#0000;-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:3.25rem;font-weight:800;line-height:1}.course-card--en .course-card__code{background-image:linear-gradient(135deg,#3b82f6,#6366f1 55%,#a855f7)}.course-card--ru .course-card__code{background-image:linear-gradient(135deg,#0ea5e9,#10b981 60%,#f59e0b)}.price{font-family:var(--font-head);font-size:var(--fs-2xl);letter-spacing:-.03em;color:var(--c-text);font-weight:750}.price-meta{gap:var(--sp-2);flex-wrap:wrap;display:flex}.steps{counter-reset:step;gap:var(--sp-4);grid-template-columns:repeat(auto-fit,minmax(min(100%,12rem),1fr));padding:0;list-style:none;display:grid}.steps li{counter-increment:step;padding:var(--sp-5);background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);position:relative}.steps li:before{content:counter(step, decimal-leading-zero);margin-bottom:var(--sp-3);font-family:var(--font-head);letter-spacing:-.04em;background:var(--grad-brand);color:#0000;-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:2rem;font-weight:800;line-height:1;display:block}.steps h3{font-size:var(--fs-lg)}.steps p{color:var(--c-muted);font-size:var(--fs-sm);margin-top:var(--sp-1)}.checklist{gap:var(--sp-3);padding:0;list-style:none;display:grid}.checklist li{gap:var(--sp-3);align-items:flex-start;display:flex}.checklist svg{background:var(--c-primary-soft);width:1.5rem;height:1.5rem;color:var(--c-primary);border-radius:50%;margin-top:.1rem;padding:.2rem}.faq{gap:var(--sp-3);max-width:52rem;display:grid}.faq details{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-sm);padding:var(--sp-4) var(--sp-5);transition:border-color .2s}.faq details[open]{border-color:color-mix(in srgb, var(--c-primary) 40%, var(--c-border))}.faq summary{cursor:pointer;justify-content:space-between;gap:var(--sp-3);font-weight:650;list-style:none;display:flex}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";color:var(--c-primary);transition:transform .2s var(--ease);font-size:1.4rem;line-height:1}.faq details[open] summary:after{transform:rotate(45deg)}.faq details p{margin-top:var(--sp-3);color:var(--c-muted)}.levels{gap:var(--sp-3);grid-template-columns:repeat(auto-fit,minmax(min(100%,20rem),1fr));display:grid}.level-row{gap:var(--sp-3);padding:var(--sp-4) var(--sp-5);background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-sm);grid-template-columns:3.5rem 1fr;align-items:start;display:grid}.level-tag{font-family:var(--font-head);letter-spacing:-.03em;color:var(--c-primary);font-size:1.5rem;font-weight:800}.cta-band{isolation:isolate;background:radial-gradient(36rem 18rem at 100% 0%, #a855f773, transparent 70%), radial-gradient(28rem 16rem at 0% 100%, #f973164d, transparent 70%), var(--ink);color:var(--ink-text);border-radius:calc(var(--radius) * 1.4);padding:var(--sp-7) var(--sp-5);gap:var(--sp-5);align-items:center;display:grid;position:relative;overflow:hidden}@media (width>=48rem){.cta-band{padding:var(--sp-7);grid-template-columns:1fr auto}}.cta-band h2{font-size:var(--fs-2xl)}.cta-band p{color:var(--ink-muted);font-size:var(--fs-lg);max-width:40rem}.cta-band .btn{justify-self:start}.channels{gap:var(--sp-3);grid-template-columns:repeat(auto-fit,minmax(min(100%,16rem),1fr));padding:0;list-style:none;display:grid}.channels li{gap:var(--sp-2) var(--sp-3);padding:var(--sp-4);background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-sm);flex-wrap:wrap;align-items:center;display:flex}.channels svg{width:1.4rem;height:1.4rem;color:var(--c-brand)}.channels strong{min-width:7rem}.teacher{align-items:flex-start}.teacher__badge{color:#fff;min-width:4.5rem;height:3.5rem;font-family:var(--font-head);letter-spacing:.04em;background:linear-gradient(135deg,#4338ca,#7e22ce 55%,#c2410c);border-radius:1rem;justify-content:center;align-items:center;gap:.4rem;padding:0 1rem;font-size:1.15rem;font-weight:750;display:inline-flex}.teacher__badge span+span:before{content:"·";opacity:.7;margin-right:.4rem}.teacher dl{gap:var(--sp-3);width:100%;margin-top:var(--sp-2);display:grid}.teacher dt{font-size:var(--fs-sm);color:var(--c-muted);margin-bottom:var(--sp-1)}.teacher dd{gap:var(--sp-1);flex-wrap:wrap;margin:0;display:flex}.teacher .h2-like{font-size:var(--fs-xl)}.review{gap:var(--sp-3)}.review__stars{color:#f59e0b;gap:2px;display:flex}.review__stars svg{width:1.1rem;height:1.1rem}.review__meta{font-size:var(--fs-sm);color:var(--c-muted)}.review blockquote{font-size:var(--fs-lg);margin:0;line-height:1.55}.prose{max-width:46rem}.prose>*+*{margin-top:var(--sp-4)}.prose h2{font-size:var(--fs-xl);margin-top:var(--sp-6)}.prose ul,.prose ol{padding-left:1.4rem}.prose table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--c-border);padding:var(--sp-2);text-align:left;vertical-align:top}.notice{padding:var(--sp-4) var(--sp-5);border-radius:var(--radius-sm);background:var(--c-warn-bg);color:var(--c-warn-text);border:1px solid color-mix(in srgb, currentColor 25%, transparent)}.notice--info{background:var(--c-primary-soft);color:var(--c-text);border-color:color-mix(in srgb, var(--c-primary) 30%, transparent)}.form{gap:var(--sp-5);background:var(--c-surface);border:1px solid var(--c-border);border-radius:calc(var(--radius) * 1.2);padding:var(--sp-5);box-shadow:var(--shadow-lg);display:grid}@media (width>=48rem){.form{padding:var(--sp-7) var(--sp-6)}}.form-grid{gap:var(--sp-4) var(--sp-5);display:grid}@media (width>=40rem){.form-grid--2{grid-template-columns:1fr 1fr}.form-grid--2>.span-2{grid-column:1/-1}}.field{align-content:start;gap:.4rem;display:grid}.field label,.field legend,.field__label{font-size:.95rem;font-weight:600}.field__req{color:var(--c-error)}.field__opt{color:var(--c-muted);font-weight:400;font-size:var(--fs-sm)}.field__hint{color:var(--c-muted);font-size:var(--fs-sm)}.input,.field input:not([type=checkbox],[type=radio]),.field select,.field textarea{border-radius:var(--radius-sm);border:1px solid var(--c-border);background:var(--c-bg);width:100%;min-height:3rem;color:var(--c-text);padding:.7rem .95rem;transition:border-color .2s,box-shadow .2s,background-color .2s}.field textarea{resize:vertical;min-height:8rem}.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--c-muted)}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--c-primary);background:var(--c-surface);box-shadow:0 0 0 4px color-mix(in srgb, var(--c-primary) 18%, transparent);outline:none}[aria-invalid=true]{border-color:var(--c-error)!important}.field-error{color:var(--c-error);font-size:var(--fs-sm);gap:var(--sp-1);align-items:flex-start;font-weight:600;display:flex}fieldset{border:0;min-width:0;padding:0}.choices{gap:var(--sp-2);margin-top:var(--sp-1);flex-wrap:wrap;display:flex}.choice{position:relative}.choice input{opacity:0;cursor:pointer;width:100%;height:100%;margin:0;position:absolute;inset:0}.choice span{align-items:center;gap:var(--sp-2);border:1px solid var(--c-border);border-radius:var(--radius-pill);background:var(--c-bg);min-height:2.75rem;padding:.5rem 1.1rem;font-weight:550;transition:border-color .2s,background-color .2s,box-shadow .2s;display:inline-flex}.choice:hover span{border-color:var(--c-muted)}.choice input:checked+span{border-color:var(--c-primary);background:var(--c-primary-soft);box-shadow:inset 0 0 0 1px var(--c-primary)}.choice input:focus-visible+span{outline:3px solid var(--c-focus);outline-offset:2px}.choice input:disabled+span{opacity:.5}.choices--cards{grid-template-columns:repeat(auto-fit,minmax(min(100%,14rem),1fr));display:grid}.choices--cards .choice span{border-radius:var(--radius-sm);padding:var(--sp-4);flex-direction:column;align-items:flex-start;width:100%;height:100%}.choices--cards .choice small{color:var(--c-muted);font-weight:400}.check{gap:var(--sp-3);align-items:flex-start;display:flex}.check input{width:1.35rem;height:1.35rem;accent-color:var(--c-primary);flex-shrink:0;margin-top:.2rem}.hp{width:1px;height:1px;top:auto;left:-10000px;overflow:hidden;position:absolute!important}.form-summary{padding:var(--sp-4) var(--sp-5);border-radius:var(--radius-sm);background:var(--c-error-bg);color:var(--c-error);border:1px solid color-mix(in srgb, var(--c-error) 30%, transparent)}.form-summary ul{margin-top:var(--sp-2);padding-left:1.2rem}.form-summary a{color:inherit;font-weight:600}.form-success{padding:var(--sp-5);border-radius:var(--radius-sm);background:var(--c-success-bg);color:var(--c-success);font-weight:600}.turnstile{min-height:65px}.form-actions{gap:var(--sp-3);flex-wrap:wrap;align-items:center;display:flex}.stepper{gap:var(--sp-2);counter-reset:st;padding:0;list-style:none;display:flex}.stepper li{counter-increment:st;font-size:var(--fs-sm);color:var(--c-muted);padding-top:var(--sp-3);border-top:4px solid var(--c-surface-2);border-radius:2px;flex:1;font-weight:600}.stepper li:before{content:counter(st) ". "}.stepper li[aria-current=step]{color:var(--c-text);border-color:var(--c-primary)}.stepper li.is-done{border-color:var(--c-primary)}.summary-box{background:var(--c-surface-2);border-radius:var(--radius-sm);padding:var(--sp-4) var(--sp-5)}.summary-box dl{gap:var(--sp-2) var(--sp-4);grid-template-columns:auto 1fr;display:grid}.summary-box dt{color:var(--c-muted)}.summary-box dd{margin:0;font-weight:600}.test-progress{gap:var(--sp-2);display:grid}progress{border-radius:var(--radius-pill);appearance:none;background:var(--c-surface-2);width:100%;height:.6rem;accent-color:var(--c-primary);border:0;overflow:hidden}progress::-webkit-progress-bar{background:var(--c-surface-2)}progress::-webkit-progress-value{background:var(--grad-brand);border-radius:var(--radius-pill)}progress::-moz-progress-bar{background:var(--grad-brand);border-radius:var(--radius-pill)}.question{padding:var(--sp-5);border:1px solid var(--c-border);border-radius:var(--radius-sm);background:var(--c-bg)}.question legend{font-weight:650;font-size:var(--fs-lg);margin-bottom:var(--sp-3)}.question__num{color:var(--c-muted);font-size:var(--fs-sm);margin-bottom:var(--sp-1);font-weight:600;display:block}.question__passage{padding:var(--sp-4) var(--sp-5);background:var(--c-surface-2);border-radius:var(--radius-sm);margin-bottom:var(--sp-3);border-left:3px solid var(--c-primary)}.options{gap:var(--sp-2);display:grid}.options .choice span{border-radius:var(--radius-sm);width:100%}.result-level{font-family:var(--font-head);letter-spacing:-.05em;background:var(--grad-brand);color:#0000;-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:clamp(4rem,2.5rem + 8vw,7rem);font-weight:800;line-height:1}.by-level{gap:var(--sp-2);grid-template-columns:repeat(auto-fit,minmax(5.5rem,1fr));padding:0;list-style:none;display:grid}.by-level li{padding:var(--sp-3);border-radius:var(--radius-sm);background:var(--c-surface-2);text-align:center}.by-level strong{font-family:var(--font-head);display:block}.site-footer{margin-top:var(--sp-8);background:var(--ink);color:var(--ink-muted);padding-block:var(--sp-8) var(--sp-5);font-size:var(--fs-sm);border-radius:calc(var(--radius) * 1.6) calc(var(--radius) * 1.6) 0 0}.site-footer .logo{color:var(--ink-text)}.site-footer .muted{color:var(--ink-muted)}.footer-grid{gap:var(--sp-6);grid-template-columns:repeat(auto-fit,minmax(min(100%,12rem),1fr));display:grid}.site-footer h2{font-size:var(--fs-base);margin-bottom:var(--sp-3);color:var(--ink-text);letter-spacing:-.01em}.site-footer ul{gap:var(--sp-2);padding:0;list-style:none;display:grid}.site-footer a{color:var(--ink-muted);text-decoration:none}.site-footer a:hover{color:var(--ink-text);text-decoration:underline}.site-footer>.container>section{margin-top:var(--sp-7)}.site-footer .channels li{border-color:var(--ink-line);color:var(--ink-text);background:#ffffff0a}.site-footer .channels svg{color:#a5b4fc}.site-footer .channels a{color:var(--ink-text)}.footer-bottom{margin-top:var(--sp-6);padding-top:var(--sp-4);border-top:1px solid var(--ink-line);justify-content:space-between;gap:var(--sp-3);flex-wrap:wrap;display:flex}.lang-choice{gap:var(--sp-3);max-width:24rem;margin-inline:auto;margin-top:var(--sp-6);display:grid}.lang-choice .btn{font-size:var(--fs-lg)}.h2-like{font-size:var(--fs-2xl)}main:focus{outline:none}