/* QRACT landing — shared styles (dark, mobile-first) */
:root{
  --bg:#0B1320; --bg2:#0D1520; --card:#131C2B; --card2:#0F1826;
  --border:rgba(255,255,255,0.08); --border2:rgba(255,255,255,0.06);
  --txt:#EAF0F6; --muted:rgba(255,255,255,0.62); --faint:rgba(255,255,255,0.36);
  --mint:#4ECBA0; --blue:#5B8DEF; --amber:#F5A623; --pink:#E8547A; --purple:#8B5CF6;
}
*{box-sizing:border-box;min-width:0;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--bg);color:var(--txt);
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;line-height:1.5;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{max-width:1080px;margin:0 auto;padding:0 18px;}
h1,h2,h3{font-family:"Nunito","Inter",sans-serif;letter-spacing:-.01em;margin:0;}

/* nav */
.nav{position:sticky;top:0;z-index:20;background:rgba(11,19,32,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--border2);}
.nav-inner{display:flex;align-items:center;gap:10px;height:58px;}
.logo{display:flex;align-items:center;gap:9px;}
.logo .logo-img{height:28px;width:auto;display:block;}
.nav-links{display:none;gap:22px;margin-left:18px;}
.nav-links a{font-size:14px;color:var(--muted);}
.nav-links a:hover{color:var(--txt);}
.nav-cta{margin-left:auto;display:flex;gap:8px;align-items:center;}
.nav-login{font-size:14px;color:var(--muted);padding:8px 10px;}
@media(min-width:860px){.nav-links{display:flex;}}
/* Мобильный хедер: только «Войти» в виде пилюли, основной CTA скрыт */
@media(max-width:640px){
  .nav-cta .btn-primary{display:none;}
  .nav-login{border:1px solid var(--border);border-radius:999px;padding:8px 16px;color:var(--txt);font-weight:600;}
}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;cursor:pointer;
  font-family:"Nunito";font-weight:800;border-radius:14px;transition:transform .12s,box-shadow .15s,background .15s;}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--mint);color:#08121d;box-shadow:0 8px 30px rgba(78,203,160,.25);}
.btn-primary:hover{background:#43b691;}
.btn-ghost{background:rgba(255,255,255,.05);color:var(--txt);border:1px solid var(--border);}
.btn-lg{height:50px;padding:0 24px;font-size:15px;}
.btn-md{height:40px;padding:0 16px;font-size:14px;border-radius:999px;}
.btn-block{width:100%;}

/* sections */
.section{padding:54px 0;}
.section.alt{background:var(--card2);border-top:1px solid var(--border2);border-bottom:1px solid var(--border2);}
.eyebrow{font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--mint);margin:0 0 12px;}
.h2{font-size:26px;line-height:1.15;font-weight:850;margin:0 0 8px;}
.section-sub{font-size:15px;color:var(--muted);max-width:560px;margin:0 0 26px;}
.center{text-align:center;}
.center .section-sub{margin-left:auto;margin-right:auto;}
@media(min-width:760px){.h2{font-size:32px;}}

/* hero */
.hero{padding:42px 0 50px;background:
  radial-gradient(120% 80% at 50% -10%, rgba(78,203,160,.16), transparent 60%),
  radial-gradient(90% 60% at 92% 0%, rgba(91,141,239,.14), transparent 55%);}
.hero-grid{display:grid;grid-template-columns:1fr;gap:30px;align-items:center;}
.hero-badge{display:inline-block;font-size:12px;font-weight:700;color:var(--mint);background:rgba(78,203,160,.1);border:1px solid rgba(78,203,160,.25);border-radius:999px;padding:5px 12px;margin-bottom:16px;}
.h1{font-size:34px;line-height:1.08;font-weight:900;margin:0 0 14px;}
.h1 .grad{background:linear-gradient(100deg,var(--mint),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent;}
.lead{font-size:16px;color:var(--muted);line-height:1.55;margin:0 0 22px;max-width:520px;}
.hero-actions{display:flex;flex-direction:column;gap:10px;max-width:380px;}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.chips span{font-size:12px;color:var(--faint);background:rgba(255,255,255,.03);border:1px solid var(--border2);border-radius:999px;padding:6px 11px;}
@media(min-width:760px){
  .h1{font-size:48px;}
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:40px;}
  .hero-actions{flex-direction:row;}
}

/* hero mock visual */
.heromock{border-radius:20px;border:1px solid var(--border);background:linear-gradient(180deg,#0e1828,#0b1320);padding:16px;position:relative;overflow:hidden;}
.heromock .scrn{aspect-ratio:16/10;border-radius:14px;background:#0a121e;border:1px solid var(--border);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;}
.heromock .scrn .q{font-size:13px;color:var(--faint);}
.bars{display:flex;align-items:flex-end;gap:10px;height:90px;}
.bars i{width:34px;border-radius:7px 7px 0 0;}
.qrchip{position:absolute;right:22px;bottom:20px;width:64px;height:64px;border-radius:14px;background:#fff;display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);gap:3px;padding:8px;}
.qrchip span{background:#0a121e;border-radius:2px;}.qrchip span.o{background:transparent;}

/* stat strip */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;}
.stat{text-align:center;}
.stat .v{font-family:"Nunito";font-size:26px;font-weight:900;color:var(--mint);}
.stat .l{font-size:12px;color:var(--faint);margin-top:3px;}

/* feature/cards grid */
.grid{display:grid;grid-template-columns:1fr;gap:14px;}
@media(min-width:680px){.grid.cols-2{grid-template-columns:1fr 1fr;}}
@media(min-width:860px){.grid.cols-3{grid-template-columns:repeat(3,1fr);}.grid.cols-4{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1000px){.grid.cols-4{grid-template-columns:repeat(4,1fr);}}
.card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:20px;border-left:3px solid var(--mint);}
.card.b{border-left-color:var(--blue);}.card.a{border-left-color:var(--amber);}.card.p{border-left-color:var(--purple);}.card.k{border-left-color:var(--pink);}
.card .ico{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}
.card h3{font-size:16px;font-weight:800;margin:0 0 5px;}
.card p{font-size:14px;color:var(--muted);margin:0;line-height:1.5;}
.ic{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

/* steps */
.steps{display:grid;grid-template-columns:1fr;gap:18px;counter-reset:s;}
@media(min-width:760px){.steps{grid-template-columns:repeat(3,1fr);}}
.step{display:flex;gap:14px;}
.step .n{counter-increment:s;width:34px;height:34px;flex:none;border-radius:50%;background:rgba(78,203,160,.14);color:var(--mint);font-family:"Nunito";font-weight:900;display:flex;align-items:center;justify-content:center;}
.step .n::before{content:counter(s);}
.step h3{font-size:16px;font-weight:800;margin:0 0 4px;}
.step p{font-size:14px;color:var(--muted);margin:0;}

/* audience cards */
.aud{display:block;background:var(--card);border:1px solid var(--border);border-radius:18px;padding:20px;transition:border-color .15s,transform .12s;}
.aud:hover{border-color:rgba(78,203,160,.4);transform:translateY(-2px);}
.aud .emoji{display:flex;align-items:center;height:30px;}
.aud h3{font-size:17px;font-weight:800;margin:8px 0 5px;}
.aud p{font-size:14px;color:var(--muted);margin:0 0 10px;}
.aud .go{font-size:13px;font-weight:800;color:var(--mint);}

/* checklist */
.checks{display:grid;grid-template-columns:1fr;gap:12px;}
@media(min-width:760px){.checks{grid-template-columns:1fr 1fr;}}
.check{display:flex;gap:11px;align-items:flex-start;}
.check .tick{color:var(--mint);font-weight:900;flex:none;}
.check b{color:var(--txt);}
.check span{font-size:14px;color:var(--muted);}

/* pricing */
.prices{display:grid;grid-template-columns:1fr;gap:14px;}
@media(min-width:860px){.prices{grid-template-columns:repeat(3,1fr);align-items:start;}}
.price{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:22px;}
.price.hi{border-color:rgba(78,203,160,.5);box-shadow:0 0 0 1px rgba(78,203,160,.18);}
.price .pn{font-family:"Nunito";font-weight:800;font-size:15px;display:flex;align-items:center;gap:8px;}
.price .pp{font-family:"Nunito";font-size:30px;font-weight:900;margin:8px 0;}
.price .pp small{font-size:13px;color:var(--faint);font-weight:600;}
.price ul{margin:8px 0 18px;padding-left:18px;font-size:14px;color:var(--muted);line-height:1.8;}
.tagpill{font-size:10px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;padding:3px 9px;border-radius:999px;background:rgba(78,203,160,.15);color:var(--mint);}

/* demo */
.demo{border-radius:20px;overflow:hidden;border:1px solid var(--border);background:#0a121e;aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;position:relative;}
.demo .play{width:72px;height:72px;border-radius:50%;background:rgba(78,203,160,.16);border:1px solid rgba(78,203,160,.4);display:flex;align-items:center;justify-content:center;}
.demo .play svg{width:30px;height:30px;color:var(--mint);}

/* faq */
.faq details{border-bottom:1px solid var(--border2);}
.faq summary{list-style:none;cursor:pointer;padding:16px 0;font-size:15px;font-weight:700;display:flex;justify-content:space-between;gap:12px;}
.faq summary::-webkit-details-marker{display:none;}
.faq .ans{font-size:14px;color:var(--muted);line-height:1.6;padding:0 0 16px;}
.faq .chev{color:var(--faint);transition:transform .15s;}
.faq details[open] .chev{transform:rotate(180deg);}

/* cta band */
.ctaband{background:radial-gradient(100% 100% at 50% 0%, rgba(78,203,160,.14), transparent 70%);text-align:center;}

/* footer */
.footer{border-top:1px solid var(--border2);padding:34px 0;color:var(--faint);font-size:12px;}
.footer .cols{display:flex;flex-wrap:wrap;gap:26px;margin-bottom:20px;}
.footer .col h4{font-size:12px;color:var(--txt);font-family:"Inter";font-weight:700;margin:0 0 10px;text-transform:uppercase;letter-spacing:.06em;}
.footer a{display:block;color:var(--muted);font-size:13px;padding:3px 0;}
.footer a:hover{color:var(--txt);}

/* blog */
.post{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px;transition:border-color .15s;}
.post:hover{border-color:rgba(78,203,160,.35);}
.post .tag{font-size:11px;font-weight:800;color:var(--mint);text-transform:uppercase;letter-spacing:.05em;}
.post h3{font-size:17px;font-weight:800;margin:8px 0 6px;}
.post p{font-size:14px;color:var(--muted);margin:0;}
.article{max-width:720px;}
.article h1{font-size:32px;line-height:1.15;margin:14px 0 14px;}
.article h2{font-size:22px;margin:28px 0 10px;}
.article p{font-size:16px;color:var(--muted);line-height:1.7;margin:0 0 16px;}
.article ul{font-size:16px;color:var(--muted);line-height:1.7;padding-left:22px;}
.article .meta{font-size:13px;color:var(--faint);}