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a:hover{color:var(--gold)}.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 0}.footer-bottom .container{display:flex;justify-content:space-between;font-size:11px}.footer-bottom strong{color:var(--gold);letter-spacing:.12em}.floating-whatsapp{position:fixed;right:22px;bottom:24px;width:56px;height:56px;border-radius:50%;display:grid;place-items:center;background:var(--teal);color:#082c2a;font-weight:900;box-shadow:0 12px 30px rgba(8,90,84,.3);z-index:900}.back-top{position:fixed;right:28px;bottom:92px;width:42px;height:42px;border:0;border-radius:50%;background:var(--navy);color:#fff;opacity:0;transform:translateY(10px);transition:.3s;z-index:899}.back-top.show{opacity:1;transform:none}.mobile-actions{display:none}.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}.reveal.visible{opacity:1;transform:none}
@media(max-width:980px){.site-header nav{position:absolute;top:82px;left:20px;right:20px;background:#fff;border-radius:18px;box-shadow:var(--shadow);padding:18px;display:none;flex-direction:column;align-items:stretch}.site-header nav.open{display:flex}.menu-toggle{display:block}.hero-grid,.split,.split.reverse,.contact-grid{grid-template-columns:1fr}.hero{padding-top:50px}.hero-copy{order:1}.hero-visual{order:2;max-width:650px;margin:auto}.image-frame img{height:520px}.section{padding:80px 0}.service-grid,.blog-grid{grid-template-columns:1fr 1fr}.timeline{grid-template-columns:1fr 1fr;gap:35px}.timeline:before{display:none}.value-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.cta .container{align-items:start}.gallery-item,.gallery-item:nth-child(1),.gallery-item:nth-child(4){grid-column:span 6}}
@media(max-width:640px){:root{--container:min(100% - 28px,1180px)}body{padding-bottom:64px}.nav-wrap{height:72px}.brand-mark{width:38px;height:38px}.hero{min-height:auto;padding:45px 0 70px}.hero h1{font-size:49px}.hero h2{font-size:20px}.hero-grid{gap:44px}.image-frame img{height:420px}.formula-card{left:-4px;top:45px}.glass-note{left:16px;right:16px;bottom:16px;display:grid}.trust-row{gap:20px;justify-content:space-between}.trust-row strong{font-size:22px}.section{padding:68px 0}.section-head{display:block}.section h2{font-size:38px}.check-grid,.service-grid,.blog-grid,.advantage-grid,.form-row,.value-grid{grid-template-columns:1fr}.feature-image img{height:420px}.timeline{grid-template-columns:1fr}.timeline-step{text-align:left;padding-left:78px;min-height:80px}.timeline-step>span{position:absolute;left:0;top:0}.quiz-preview{padding:22px}.cta .container{display:block}.cta .container>div:last-child{margin-top:25px}.page-hero{padding:80px 0 70px}.page-hero h1{font-size:44px}.stats{grid-template-columns:1fr}.quiz-levels{display:grid;grid-template-columns:1fr 1fr 1fr}.quiz-levels button{padding:10px 5px}.quiz-stage{padding:22px;min-height:400px}.quiz-options{grid-template-columns:1fr}.gallery-item,.gallery-item:nth-child(1),.gallery-item:nth-child(4){grid-column:span 12}.gallery-item img{height:260px}.lightbox{padding:50px 15px}.article-image img{height:300px}.footer-grid{grid-template-columns:1fr}.footer-bottom .container{display:grid;gap:8px}.floating-whatsapp{display:none}.mobile-actions{position:fixed;z-index:1000;left:0;right:0;bottom:0;height:64px;display:grid;grid-template-columns:1.3fr 1fr;background:#fff;border-top:1px solid var(--line);padding:8px;gap:8px}.mobile-actions a{display:grid;place-items:center;border-radius:10px;background:var(--teal);color:#082d2b;font-weight:900;font-size:12px}.mobile-actions a:last-child{background:var(--navy);color:#fff}.back-top{bottom:78px}.contact-form,.contact-panel{padding:24px}.portrait-placeholder{min-height:430px}.service-card{padding:24px}}
@media(max-width:640px){
  .hero{min-height:calc(100svh - 72px);padding:0;display:flex;align-items:stretch;background-image:linear-gradient(180deg,rgba(7,15,29,.03) 8%,rgba(7,15,29,.18) 38%,rgba(7,15,29,.94) 100%),url("../img/student-homework.webp");background-size:cover;background-position:center 42%}
  .hero:after{display:none}
  .hero .math-pattern,.hero-visual{display:none}
  .hero-grid{min-height:calc(100svh - 72px);display:flex;align-items:flex-end;gap:0}
  .hero-copy,.hero-copy.reveal{width:100%;padding:46vh 0 28px;color:#fff;opacity:1;transform:none}
  .hero .eyebrow{margin-bottom:10px;color:#9de4df;text-shadow:0 2px 12px rgba(0,0,0,.42)}
  .hero h1{max-width:360px;margin-bottom:13px;color:#fff;font-size:clamp(32px,9.2vw,38px);line-height:.98;text-shadow:0 3px 24px rgba(0,0,0,.48)}
  .hero h2{max-width:340px;margin:0;color:#fff;font-size:16px;line-height:1.4;font-weight:750;text-shadow:0 2px 14px rgba(0,0,0,.55)}
  .hero-copy>p,.hero .trust-row{display:none}
  .hero-actions{margin:19px 0 12px;gap:9px}
  .hero-actions .button{padding:13px 18px;font-size:12px}
  .hero-actions .button.primary{background:var(--gold);color:var(--navy);box-shadow:0 12px 30px rgba(0,0,0,.22)}
  .hero-actions .button.secondary{border-color:rgba(255,255,255,.72);background:rgba(255,255,255,.13);color:#fff;backdrop-filter:blur(12px)}
  .hero .text-link{color:#fff;font-size:12px;text-shadow:0 2px 12px rgba(0,0,0,.6)}
}
@media(max-width:390px) and (max-height:740px){
  .hero-copy,.hero-copy.reveal{padding-top:37vh;padding-bottom:20px}
  .hero h1{font-size:31px}
  .hero h2{font-size:14px}
  .hero-actions{margin-top:14px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.math-pattern span{animation:none}.reveal{opacity:1;transform:none;transition:none}*{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}

.teacher-photo{min-height:520px;margin:0;border-radius:var(--radius);position:relative;overflow:hidden;background:var(--navy);box-shadow:var(--shadow)}
.teacher-photo img{width:100%;height:520px;object-fit:cover;object-position:center}
.teacher-photo figcaption{position:absolute;left:16px;right:16px;bottom:16px;width:max-content;max-width:calc(100% - 32px);padding:8px 12px;border-radius:999px;background:rgba(16,28,53,.84);color:#fff;font-size:10px;letter-spacing:.02em;backdrop-filter:blur(8px)}
@media(max-width:640px){.teacher-photo{min-height:430px}.teacher-photo img{height:430px}.teacher-photo figcaption{border-radius:14px;line-height:1.35}}