/* Лендинг Ольги Кузьмичевой — Б.5 «Бенто + неон-мята». Mobile-first. */
:root{
  --paper:#FFFFFF; --ink:#0A0A0A; --gray:#F4F4F4; --photo:#EFEFEF;
  --cap:#6E6E6E; --neon:#00FF85; --neon-dark:#00E276; --tint:#DEFFEF;
  --r:20px; --r-btn:14px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.5}
img{max-width:100%}
main{max-width:1280px;margin:0 auto}
h1,h2,h3{letter-spacing:-.02em}
h2{font-size:28px;font-weight:900;margin-bottom:20px}

/* кнопки: дофаминовые */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--neon);color:var(--ink);
  border:none;border-radius:var(--r-btn);padding:17px 26px;font-size:15.5px;font-weight:800;letter-spacing:-.01em;
  font-family:var(--font);cursor:pointer;text-decoration:none;
  transition:transform .18s cubic-bezier(.34,1.56,.64,1),background .12s,box-shadow .15s}
.btn::after{content:"→";font-weight:900;transition:transform .18s}
.btn:hover{transform:translateY(-2px);background:var(--neon-dark);box-shadow:0 8px 24px rgba(0,255,133,.35)}
.btn:hover::after{transform:translateX(3px)}
.btn:active{transform:scale(.96)}
.btn:focus-visible{outline:3px solid var(--ink);outline-offset:2px}
.btn.dark{background:var(--ink);color:#fff}
.btn.dark:hover{background:#222;box-shadow:0 8px 24px rgba(0,0,0,.25)}
.btn.small{padding:12px 20px;font-size:14px;border-radius:12px}
.btn[disabled]{opacity:.6;cursor:default;transform:none;box-shadow:none}

/* шапка */
.nav{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:12px;
  padding:14px 20px;background:rgba(255,255,255,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.logo{font-size:14px;font-weight:800;color:var(--ink);text-decoration:none;margin-right:auto}
.nav-note{display:none;color:var(--cap);font-size:13px;font-weight:600}
.navcta{background:var(--ink);color:#fff;border:none;border-radius:12px;padding:11px 16px;
  font-size:13px;font-weight:700;font-family:var(--font);cursor:pointer;transition:transform .15s}
.navcta:hover{transform:translateY(-1px)}
.navcta:active{transform:scale(.96)}
.navcta:focus-visible{outline:3px solid var(--neon);outline-offset:2px}

/* фото-плейсхолдеры */
.photo{background:var(--photo);border-radius:var(--r);display:flex;align-items:center;justify-content:center;
  color:var(--cap);font-size:13px;text-align:center;line-height:1.5;min-height:200px}

/* хиро */
.hero{padding:20px 20px 8px;display:grid;gap:20px}
.h-eyebrow{font-size:13px;font-weight:700;color:var(--cap);margin-bottom:16px}
.h-eyebrow b{color:var(--ink)}
.hero h1{font-weight:900;font-size:clamp(34px,9vw,60px);line-height:1.0}
.hero h1 mark{background:var(--neon);color:var(--ink);border-radius:14px;padding:0 12px;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.hero .sub{font-size:16.5px;line-height:1.55;color:#3d3d3d;margin-top:18px;max-width:500px}
.hero-cta{margin-top:24px}
.hero-cta .btn{width:100%}
.h-photo{min-height:300px}

/* полоса регалий */
.h-strip{display:grid;gap:12px;padding:24px 20px 8px}
.s-tile{border-radius:var(--r);padding:20px 22px}
.s-tile b{font-size:30px;font-weight:900;letter-spacing:-.03em;display:block}
.s-tile span{font-size:13px;line-height:1.4;display:block;margin-top:4px}
.s-tile.dark{background:var(--ink);color:#fff}
.s-tile.dark b{color:var(--neon)}
.s-tile.dark span{color:#bbb}
.s-tile.gray{background:var(--gray)}
.s-tile.gray span{color:#666}

/* бенто */
.bento-sec{padding:40px 20px 8px}
.bento{display:grid;gap:12px}
.tile{border-radius:var(--r);padding:22px;background:var(--gray);transition:transform .15s}
.tile h3{font-size:17.5px;font-weight:800;line-height:1.22}
.tile p{font-size:13.5px;line-height:1.5;color:#555;margin-top:8px}
.tile.hero-tile{background:var(--tint);display:flex;flex-direction:column;gap:16px;justify-content:space-between}
.tile.hero-tile h3{font-size:22px}
.tile.hero-tile p{font-size:14.5px}
.tile.hero-tile .btn{align-self:flex-start}
.tile.photo-tile{padding:0;background:var(--photo);display:flex;align-items:center;justify-content:center;
  color:var(--cap);font-size:12.5px;text-align:center;min-height:130px}
.tile.magnet{background:var(--ink);color:#fff}
.tile.magnet h3{color:#fff;font-size:18px}
.tile.magnet h3 em{font-style:normal;color:var(--neon)}
.tile.magnet p{color:#bbb}

/* доказательства */
.proof{padding:40px 20px 8px;display:grid;gap:20px}
.p-photo{min-height:240px}
.prows{margin-top:4px}
.prow{display:flex;gap:16px;padding:12px 0;align-items:baseline}
.prow dt{font-weight:900;font-size:28px;letter-spacing:-.02em;min-width:92px}
.prow dt em{font-style:normal;background:var(--neon);border-radius:8px;padding:0 6px}
.prow dd{font-size:14.5px;line-height:1.45;color:#555}

/* как устроено */
.how{padding:40px 20px 8px}
.steps{list-style:none;counter-reset:step;display:grid;gap:12px}
.steps li{counter-increment:step;background:var(--gray);border-radius:var(--r);padding:18px 20px 18px 58px;
  position:relative;font-size:14.5px;line-height:1.5;color:#444}
.steps li b{color:var(--ink)}
.steps li::before{content:counter(step);position:absolute;left:18px;top:16px;width:28px;height:28px;
  border-radius:9px;background:var(--neon);color:var(--ink);font-weight:900;font-size:14px;
  display:flex;align-items:center;justify-content:center}

/* финал */
.final{margin:40px 20px;background:var(--tint);border-radius:24px;padding:32px;display:grid;gap:20px}
.final h2{margin-bottom:8px}
.final p{font-size:15px;line-height:1.55;color:#444;max-width:460px}
.final-btn .btn{width:100%}

/* подвал */
.footer{padding:32px 20px 40px;max-width:1280px;margin:0 auto}
.footer p{font-size:12.5px;color:#888;line-height:1.6}
.footer a{color:#666}
.footer-links{display:flex;flex-direction:column;gap:6px;margin-top:12px}
.footer-links a{font-size:12.5px}
.todo{background:#FFF3C4;border-radius:4px;padding:0 4px}

/* попап */
.overlay{position:fixed;inset:0;background:rgba(10,10,10,.55);display:flex;align-items:flex-end;
  justify-content:center;z-index:100;padding:0;overflow-y:auto}
.overlay[hidden]{display:none}
.modal{background:#fff;border-radius:24px 24px 0 0;padding:28px 22px 34px;max-width:480px;width:100%;
  position:relative;box-shadow:0 24px 80px rgba(0,0,0,.35)}
.modal h2{font-size:23px;margin-bottom:6px;padding-right:40px}
.modal-sub{font-size:14px;color:#666;margin-bottom:18px}
.modal .x{position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:12px;background:var(--gray);
  border:none;font-size:15px;cursor:pointer;font-weight:700;transition:transform .15s}
.modal .x:active{transform:scale(.9)}
.modal .x:focus-visible{outline:3px solid var(--ink)}
.fld{margin-bottom:12px}
.fld label{display:block;font-size:13px;font-weight:700;margin-bottom:5px}
.fld label i,.check i{color:#999;font-style:normal;font-weight:400}
.fld input{width:100%;border:1.5px solid #E2E2E2;border-radius:12px;padding:12px;font-size:16px;
  background:#fff;font-family:var(--font)}
.fld input:focus{outline:none;border-color:var(--ink)}
.fld input[aria-invalid="true"]{border-color:#C62828}
.fld-err{display:none;color:#C62828;font-size:12.5px;line-height:1.4;margin:5px 0 8px}
.fld-err.show{display:block}
.hp{position:absolute;left:-5000px;width:1px;height:1px;opacity:0}
.check{display:flex;gap:9px;font-size:12.5px;line-height:1.45;color:#555;margin:11px 0;align-items:flex-start;cursor:pointer}
.check input{margin-top:2px;width:16px;height:16px;flex:none;accent-color:var(--ink)}
.check a{color:var(--ink);font-weight:700}
.modal .btn.submit{width:100%;margin-top:8px}
.modal-note{font-size:12px;color:#888;margin-top:12px;text-align:center;line-height:1.5}
#leadSuccess{text-align:center}
#leadSuccess .btn{width:100%;margin-top:14px}
.success-icon{width:56px;height:56px;border-radius:18px;background:var(--neon);color:var(--ink);
  font-size:26px;font-weight:900;display:flex;align-items:center;justify-content:center;margin:6px auto 16px}

/* cookie */
.cookies{position:fixed;left:12px;right:12px;bottom:12px;z-index:90;background:var(--ink);color:#fff;
  border-radius:18px;padding:16px 18px;display:flex;flex-direction:column;gap:12px}
.cookies[hidden]{display:none}
.cookies p{font-size:13px;line-height:1.5;color:#ddd}
.cookies a{color:var(--neon)}
.cookies .btn{align-self:flex-start}

/* ===== десктоп ===== */
@media (min-width:760px){
  .nav{padding:18px 44px}
  .nav-note{display:block;margin-right:16px}
  .logo{font-size:15px}
  .hero{grid-template-columns:1.5fr 1fr;gap:24px;padding:28px 44px 8px;align-items:stretch}
  .hero-cta .btn{width:auto}
  .h-photo{min-height:420px}
  .h-strip{grid-template-columns:repeat(3,1fr);gap:16px;padding:32px 44px 8px}
  .s-tile b{font-size:34px}
  h2{font-size:32px}
  .bento-sec{padding:56px 44px 8px}
  .bento{grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(150px,auto);gap:16px}
  .tile.hero-tile{grid-column:span 2;grid-row:span 2}
  .tile.hero-tile h3{font-size:26px;max-width:420px}
  .tile.magnet{grid-column:span 2}
  .proof{grid-template-columns:1fr 1.15fr;gap:36px;padding:56px 44px 8px;align-items:center}
  .p-photo{min-height:300px}
  .prow dt{font-size:32px;min-width:104px}
  .how{padding:56px 44px 8px}
  .steps{grid-template-columns:repeat(4,1fr)}
  .steps li{padding:56px 20px 20px;}
  .steps li::before{left:18px;top:18px}
  .final{margin:56px 44px;grid-template-columns:1.3fr auto;align-items:center;padding:48px}
  .final-btn .btn{width:auto}
  .footer{padding:8px 44px 48px}
  .footer-links{flex-direction:row;gap:20px}
  .overlay{align-items:center;padding:20px}
  .modal{border-radius:24px;padding:32px}
  .cookies{left:auto;right:24px;bottom:24px;max-width:420px;flex-direction:row;align-items:center}
  .cookies .btn{flex:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}