/* ===== Brand tokens — sampled from mathwithme.in.ua ===== */
:root{
  --indigo:#242c7d;
  --teal:#00b294;
  --teal-dark:#008f77;
  --orange:#ff582a;
  --clay:#d5753d;
  --ink:#222;
  --body:#555;
  --tint:#eff3f8;
  --dark:#3d4454;
  --white:#fff;
  --radius:14px;
  --shadow:0 10px 30px rgba(36,44,125,.08);
  --shadow-lg:0 18px 50px rgba(36,44,125,.14);
  --sec-pad:clamp(3.5rem,7vw,6.5rem);
  --font:'Nunito',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--body);background:var(--white);
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--teal)}
h1,h2,h3,h4{font-family:var(--font);color:var(--indigo);line-height:1.15;margin:0 0 .6em;letter-spacing:-.01em}
h1{font-size:clamp(2.1rem,4.4vw,3.5rem);font-weight:800}
.h2{font-size:clamp(1.65rem,3.1vw,2.5rem);font-weight:800;text-align:center;margin-bottom:2.2rem}
.h2--left{text-align:left}
.h2--inv{color:#fff}
.hl{color:var(--teal);white-space:nowrap}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.wrap--narrow{max-width:820px}
.sec{padding:var(--sec-pad) 0}
.sec--tint{background:var(--tint)}
.eyebrow{
  font-size:.82rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--teal);margin:0 0 .9rem;
}
.eyebrow--c{text-align:center}
.eyebrow--inv{color:#7ff0dc}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-weight:700;font-size:1.02rem;text-decoration:none;cursor:pointer;
  padding:.78rem 1.5rem;border-radius:8px;border:2px solid transparent;
  transition:transform .25s cubic-bezier(.2,.8,.2,1),box-shadow .25s,background-color .2s,color .2s;
  will-change:transform;
}
.btn--solid{background:var(--orange);color:#fff;border-color:var(--orange);box-shadow:0 8px 20px rgba(255,88,42,.28)}
.btn--solid:hover{background:#ff6f47;border-color:#ff6f47;box-shadow:0 12px 26px rgba(255,88,42,.36)}
.btn--ghost{background:#fff;color:var(--teal);border-color:var(--teal)}
.btn--ghost:hover{background:var(--teal);color:#fff}
.btn--sm{padding:.5rem 1rem;font-size:.94rem}
.btn--wide{width:100%}

/* ===== Ticker ===== */
.ticker{background:var(--teal);color:#fff;overflow:hidden;padding:.42rem 0;font-weight:700;font-size:.87rem;position:relative;z-index:60}
.ticker__track{display:flex;gap:1.1rem;white-space:nowrap;width:max-content;animation:slide 38s linear infinite}
.ticker__track .dot{opacity:.5}
@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ===== Nav ===== */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);transition:box-shadow .3s}
.nav.is-scrolled{box-shadow:0 2px 18px rgba(36,44,125,.1)}
.nav__in{display:flex;align-items:center;gap:1.6rem;min-height:74px}
.nav__logo img{width:200px;height:auto;aspect-ratio:1812/495}
.nav__links{display:flex;gap:1.35rem;margin-left:auto;font-weight:600;font-size:.95rem}
.nav__links a{color:var(--indigo);text-decoration:none;position:relative;padding-bottom:3px}
.nav__links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--teal);transition:width .28s}
.nav__links a:hover::after{width:100%}
.nav__cta{display:flex;align-items:center;gap:1rem}
.nav__tel{color:var(--indigo);font-weight:700;text-decoration:none;white-space:nowrap}
.nav__tel:hover{color:var(--teal)}

/* ===== Hero ===== */
.hero{position:relative;padding:clamp(2.5rem,5vw,4.5rem) 0 clamp(3rem,6vw,5rem);overflow:hidden}
.hero__bg{
  position:absolute;inset:0;
  background:
    url("assets/img/mainbg.svg") right -60px top -40px / clamp(560px,62%,1000px) auto no-repeat,
    linear-gradient(180deg,#f7fbfd 0%,#eff3f8 100%);
  opacity:1;
}
.hero__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.82) 42%,rgba(255,255,255,0) 62%)}
.hero__in{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(340px,.92fr);gap:clamp(2rem,4vw,3.5rem);align-items:start}
.lede{font-size:1.09rem;max-width:38em;margin:0 0 1.4rem}
.checks{list-style:none;padding:0;margin:0 0 1.8rem;display:grid;gap:.55rem}
.checks li{position:relative;padding-left:2rem;font-weight:600;color:var(--indigo)}
.checks li::before{
  content:"✓";position:absolute;left:0;top:-1px;width:1.35rem;height:1.35rem;border-radius:50%;
  background:var(--teal);color:#fff;font-size:.8rem;display:grid;place-items:center;font-weight:800;
}
.checks--inv li{color:#fff}
.hero__actions{display:flex;flex-wrap:wrap;gap:.85rem;margin-bottom:2rem}
.hero__author{display:flex;gap:1rem;align-items:center;max-width:34em;background:#fff;border:1px solid rgba(36,44,125,.08);border-radius:var(--radius);padding:.9rem 1.1rem;box-shadow:var(--shadow)}
.hero__author img{width:64px;height:64px;border-radius:50%;object-fit:cover;object-position:50% 22%;flex:0 0 auto}
.hero__author p{margin:0;font-size:.93rem;line-height:1.5}
.hero__author b{color:var(--indigo)}

/* ===== Lead form card ===== */
.formcard{background:#fff;border-radius:20px;box-shadow:var(--shadow-lg);padding:clamp(1.5rem,2.4vw,2.1rem);border-top:6px solid var(--teal);position:relative}
.formcard__head h2{font-size:1.5rem;margin-bottom:.4rem;text-align:left}
.formcard__head p{margin:0 0 1.3rem;font-size:.96rem}
.lead{display:grid;gap:1rem}
.lead label{display:grid;gap:.4rem;font-size:.9rem;font-weight:700;color:var(--indigo)}
.lead input[type=text],.lead input[type=tel],.lead input[type=email],.lead select{
  font-family:var(--font);font-size:1rem;font-weight:600;color:var(--ink);
  padding:.8rem .95rem;border:2px solid #dfe5ef;border-radius:10px;background:#fbfcfe;transition:border-color .2s,box-shadow .2s;
}
.lead input::placeholder{color:#9aa4b8;font-weight:400}
.lead select{appearance:auto}
.lead input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 4px rgba(0,178,148,.14);background:#fff}
.lead .err{display:none;font-size:.8rem;font-weight:600;color:var(--orange)}
.lead .is-bad input{border-color:var(--orange)}
.lead .is-bad .err{display:block}
.consent{display:grid!important;grid-template-columns:auto 1fr;gap:.6rem!important;align-items:start;font-weight:400!important;font-size:.85rem!important;color:var(--body)!important}
.consent input{margin-top:.28rem;width:18px;height:18px;accent-color:var(--teal)}
.consent .err{grid-column:2}
.formnote{font-size:.85rem;margin:.2rem 0 0;text-align:center}
.lead.is-sent label,.lead.is-sent button,.lead.is-sent .formnote{display:none!important}
.formcard.is-sent .formcard__head p{display:none}
.lead__ok{text-align:center;padding:.5rem 0 0}
.lead__okmark{width:56px;height:56px;border-radius:50%;background:var(--teal);color:#fff;font-size:1.7rem;display:grid;place-items:center;margin:0 auto 1rem;font-weight:800}
.lead__ok h3{margin-bottom:.4rem}
.lead__ok p{margin:0 0 1.2rem}

/* ===== Stats ===== */
.stats{background:var(--indigo);color:#fff;padding:clamp(2rem,3.4vw,3rem) 0}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.6rem;text-align:center}
.stat b{display:block;font-size:clamp(2rem,3.6vw,3rem);font-weight:900;color:#fff;line-height:1.05;letter-spacing:-.02em;white-space:nowrap}
.stat b span{display:inline;font-size:inherit;color:inherit;margin:0;max-width:none}
.stat>span{display:block;font-size:.92rem;color:#c8cdf0;margin-top:.4rem;max-width:16em;margin-inline:auto}

/* ===== Tiles ===== */
.grid8{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem}
.tile{background:#fff;border:1px solid rgba(36,44,125,.08);border-radius:var(--radius);padding:1.4rem;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.tile:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.tile__i{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:rgba(0,178,148,.12);color:var(--teal);font-size:1.25rem;font-weight:800;margin-bottom:.8rem}
.tile b{display:block;color:var(--indigo);font-size:1.03rem;margin-bottom:.35rem;line-height:1.3}
.tile p{margin:0;font-size:.92rem}

/* ===== About ===== */
.about{display:grid;grid-template-columns:minmax(260px,.8fr) minmax(0,1.2fr);gap:clamp(2rem,4vw,3.5rem);align-items:center}
.about__photo{position:relative}
.about__photo img{width:100%;border-radius:18px;box-shadow:var(--shadow-lg);aspect-ratio:3/4;object-fit:cover}
.about__badge{position:absolute;bottom:-14px;left:50%;transform:translateX(-50%);background:var(--teal);color:#fff;font-weight:700;font-size:.82rem;padding:.45rem 1rem;border-radius:999px;white-space:nowrap;box-shadow:var(--shadow)}
.about__copy p{margin:0 0 .9rem}
.about__copy b{color:var(--indigo)}
.about__copy .btn{margin-top:.7rem}

/* ===== How it works — pinned ===== */
.how{background:var(--tint)}
.how__track{height:340vh;position:relative}
.how__pin{position:sticky;top:74px;height:calc(100vh - 74px);display:flex;align-items:center;overflow:hidden}
.how__in{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(2rem,4vw,3.5rem);align-items:center;width:100%}
.how__hint{font-size:1rem;margin:0 0 1.6rem;max-width:26em}
.how__bar{height:5px;background:rgba(36,44,125,.12);border-radius:99px;overflow:hidden;max-width:280px}
.how__bar span{display:block;height:100%;width:0%;background:var(--teal);border-radius:99px;transition:width .18s linear}
.how__steps{list-style:none;margin:0;padding:0;display:grid;gap:.9rem;counter-reset:s}
.how__steps li{
  display:grid;grid-template-columns:auto 1fr;gap:1.1rem;align-items:start;
  background:#fff;border-radius:var(--radius);padding:1.05rem 1.3rem;
  border-left:5px solid rgba(36,44,125,.12);
  opacity:.45;transform:translateY(6px) scale(.985);
  transition:opacity .35s,transform .35s,border-color .35s,box-shadow .35s;
}
.how__steps li.is-on{opacity:1;transform:none;border-left-color:var(--teal);box-shadow:var(--shadow-lg)}
.how__steps li b{font-size:1.5rem;font-weight:900;color:rgba(36,44,125,.28);line-height:1;transition:color .35s}
.how__steps li.is-on b{color:var(--teal)}
.how__steps li p{margin:0;font-size:.98rem}

/* ===== Results ===== */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.3rem}
.rcard{background:#fff;border:1px solid rgba(36,44,125,.1);border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.rcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.rcard h3{font-size:1.18rem;margin-bottom:.5rem}
.rcard p{margin:0;font-size:.95rem}
.rcard--accent{background:linear-gradient(140deg,var(--teal),var(--teal-dark));border-color:transparent}
.rcard--accent h3,.rcard--accent p{color:#fff}

/* ===== Advantages ===== */
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:1.3rem}
.acard{background:#fff;border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow);border-top:4px solid var(--teal)}
.acard h3{font-size:1.15rem;color:var(--teal);margin-bottom:.45rem}
.acard p{margin:0;font-size:.93rem}

/* ===== Courses ===== */
.grid5{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.pcard{position:relative;background:#fff;border:1px solid rgba(36,44,125,.1);border-radius:18px;padding:1.7rem 1.5rem;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.pcard--pop{border:2px solid var(--teal);box-shadow:var(--shadow-lg)}
.pcard--closed{opacity:.86}
.pcard__badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--orange);color:#fff;font-size:.78rem;font-weight:700;padding:.3rem .9rem;border-radius:999px;white-space:nowrap;box-shadow:0 4px 14px rgba(255,88,42,.3)}
.pcard h3{color:var(--teal);font-size:1.3rem;margin-bottom:.3rem}
.pcard__price{font-size:2rem;font-weight:900;color:var(--indigo);margin:0 0 1rem;line-height:1}
.pcard__price small{font-size:.85rem;font-weight:700;color:var(--body)}
.pcard ul{list-style:none;margin:0 0 1rem;padding:0;display:grid;gap:.38rem;font-size:.92rem}
.pcard ul li{position:relative;padding-left:1.1rem}
.pcard ul li::before{content:"•";position:absolute;left:0;color:var(--teal);font-weight:800}
.pcard__note{font-size:.9rem;margin:0 0 1.3rem}
.pcard .btn{margin-top:auto}

/* ===== Reviews (dark punctuation) ===== */
.reviews{background:var(--indigo);padding:var(--sec-pad) 0 0;overflow:hidden}
.reviews__quotes{margin-bottom:clamp(2.5rem,4vw,3.5rem)}
.q{margin:0;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:1.5rem;backdrop-filter:blur(2px)}
.q p{margin:0 0 .9rem;color:#fff;font-size:1rem;line-height:1.6}
.q cite{font-style:normal;font-size:.85rem;font-weight:700;color:#7ff0dc}
.shots{padding:0 0 clamp(2.5rem,4vw,3.5rem);position:relative}
.shots::before,.shots::after{content:"";position:absolute;top:0;bottom:0;width:90px;z-index:2;pointer-events:none}
.shots::before{left:0;background:linear-gradient(90deg,var(--indigo),transparent)}
.shots::after{right:0;background:linear-gradient(270deg,var(--indigo),transparent)}
.shots__track{display:flex;gap:1rem;width:max-content;animation:slide 70s linear infinite}
.shots__track:hover{animation-play-state:paused}
.shots__track img{width:190px;height:340px;object-fit:cover;object-position:top center;border-radius:12px;border:1px solid rgba(255,255,255,.18);box-shadow:0 10px 26px rgba(0,0,0,.25)}

/* ===== FAQ ===== */
.faq{display:grid;gap:.7rem}
.faq details{background:#fff;border:1px solid rgba(36,44,125,.12);border-radius:12px;overflow:hidden;transition:box-shadow .25s}
.faq details[open]{box-shadow:var(--shadow)}
.faq summary{
  cursor:pointer;list-style:none;padding:1.1rem 3rem 1.1rem 1.3rem;font-weight:700;color:var(--indigo);
  position:relative;font-size:1.03rem;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:1.2rem;top:50%;transform:translateY(-50%);
  color:var(--teal);font-size:1.5rem;font-weight:800;transition:transform .25s;line-height:1;
}
.faq details[open] summary::after{content:"−"}
.faq summary:hover{color:var(--teal)}
.faq details>div{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}
.faq details[open]>div{grid-template-rows:1fr}
.faq details>div>p{overflow:hidden;margin:0;padding:0 1.3rem 1.2rem;font-size:.96rem}

/* ===== Final CTA ===== */
.final{background:linear-gradient(140deg,var(--teal) 0%,var(--teal-dark) 55%,#0b7f6c 100%);padding:var(--sec-pad) 0;color:#fff}
.final__in{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(330px,.9fr);gap:clamp(2rem,4vw,3.5rem);align-items:center}
.final__copy h2{color:#fff;font-size:clamp(1.6rem,3vw,2.4rem)}
.final__copy p{color:rgba(255,255,255,.92);margin:0 0 1.3rem}
.final__copy .checks li::before{background:#fff;color:var(--teal-dark)}
.final__contacts{display:flex;flex-wrap:wrap;gap:1.2rem;margin-top:1.4rem!important}
.final__contacts a{color:#fff;font-weight:700;text-decoration:none;border-bottom:2px solid rgba(255,255,255,.45);padding-bottom:2px}
.final__contacts a:hover{border-color:#fff}
.lead--inv{background:#fff;border-radius:20px;padding:clamp(1.5rem,2.4vw,2.1rem);box-shadow:0 20px 50px rgba(0,0,0,.18)}
.lead--inv h3{font-size:1.35rem;margin-bottom:.9rem}

/* ===== Footer ===== */
.foot{background:var(--dark);color:#fff;padding:clamp(2.5rem,4vw,3.5rem) 0 1.4rem}
.foot__in{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:2rem}
.foot__brand img{width:230px;height:auto;aspect-ratio:1812/495;background:#fff;border-radius:8px;padding:.5rem .7rem;box-sizing:content-box}
.foot__brand p{font-size:.9rem;color:rgba(255,255,255,.7);margin:1rem 0 0;max-width:26em}
.foot__col h4{color:#fff;font-size:1rem;margin-bottom:.8rem}
.foot__col a{display:block;color:rgba(255,255,255,.82);text-decoration:none;font-size:.93rem;margin-bottom:.5rem;transition:color .2s}
.foot__col a:hover{color:#7ff0dc}
.foot__legal{margin-top:2.2rem;padding-top:1.2rem;border-top:1px solid rgba(255,255,255,.14);display:flex;flex-wrap:wrap;justify-content:space-between;gap:.6rem}
.foot__legal p{margin:0;font-size:.83rem;color:rgba(255,255,255,.6)}

/* ===== Sticky mobile CTA ===== */
.sticky-cta{
  display:none;position:fixed;left:16px;right:16px;bottom:14px;z-index:70;
  background:var(--orange);color:#fff;text-align:center;text-decoration:none;font-weight:800;
  padding:.9rem;border-radius:12px;box-shadow:0 10px 26px rgba(255,88,42,.4);
  transition:opacity .25s,transform .25s;
}
.sticky-cta.is-hidden{opacity:0;pointer-events:none;transform:translateY(120%)}

/* ===== Reveal ===== */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s cubic-bezier(.2,.7,.2,1)}
.reveal.is-in{opacity:1;transform:none}

/* ===== Responsive ===== */
@media (max-width:1080px){
  .nav__links{display:none}
  .grid8{grid-template-columns:repeat(2,1fr)}
  .grid4{grid-template-columns:repeat(2,1fr)}
  .grid5{grid-template-columns:repeat(2,1fr)}
  .grid3{grid-template-columns:repeat(2,1fr)}
  .stats__grid{grid-template-columns:repeat(2,1fr);gap:2rem 1rem}
  .foot__in{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .hero__in{grid-template-columns:1fr}
  .hero__bg{background:linear-gradient(180deg,#f7fbfd,#eff3f8)}
  .hero__bg::after{background:url("assets/img/mainbg.svg") right -80px top -10px / 520px auto no-repeat;opacity:.14}
  .about{grid-template-columns:1fr}
  .about__photo{max-width:340px;margin:0 auto 1.6rem}
  .final__in{grid-template-columns:1fr}
  .how__track{height:auto}
  .how__pin{position:static;height:auto;padding:var(--sec-pad) 0}
  .how__in{grid-template-columns:1fr}
  .how__bar{display:none}
  .how__steps li{opacity:1;transform:none;border-left-color:var(--teal)}
  .how__steps li b{color:var(--teal)}
}
@media (max-width:640px){
  body{font-size:16px}
  .nav__tel{display:none}
  .nav__cta{margin-left:auto}
  .nav__cta .btn{white-space:nowrap;font-size:.85rem;padding:.6rem .95rem}
  .nav__logo img{width:150px}
  .nav__in{min-height:62px;gap:.8rem}
  .grid8,.grid4,.grid5,.grid3{grid-template-columns:1fr}
  .foot__in{grid-template-columns:1fr}
  .sticky-cta{display:block}
  .foot{padding-bottom:5.5rem}
  body{padding-bottom:70px}
  .shots__track img{width:150px;height:270px}
  .hero__actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .ticker__track,.shots__track{animation:none}
  .how__steps li{opacity:1;transform:none}
}

.lead--inv .lead__ok p{color:var(--body)}
.lead--inv .lead__ok h3{color:var(--indigo)}