:root{
  --bg:#EEF1F4;
  --paper:#FFFFFF;
  --ink:#14202B;
  --muted:#5B6875;
  --line:#D5DBE1;
  --blue:#2A8BD8;
  --blue-dark:#1F6FB0;
  --out:#E3F5D3;
  --chat:#C9D8E4;
  --display:"Unbounded",system-ui,sans-serif;
  --body:"Onest",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--body);font-size:1.0625rem;line-height:1.55;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:6px}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:var(--display);font-weight:700;line-height:1.15;letter-spacing:-.01em}
h2{font-size:clamp(1.6rem,3.4vw,2.3rem);margin-bottom:12px}
.lead{color:var(--muted);max-width:56ch}
section{padding:88px 0}

/* Кнопки */
.btn{display:inline-flex;align-items:center;gap:10px;font:500 1rem var(--body);text-decoration:none;padding:15px 24px;border-radius:999px;background:var(--blue);color:#fff;transition:background .15s}
.btn:hover{background:var(--blue-dark)}
.btn svg{width:20px;height:20px;fill:currentColor}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line)}
.btn-ghost:hover{background:var(--paper)}

/* Шапка */
header{padding:20px 0}
header .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px}
.logo{font-family:var(--display);font-weight:700;font-size:1.05rem;text-decoration:none}
header nav{display:flex;gap:28px;align-items:center}
header nav a{text-decoration:none;color:var(--muted);font-weight:500}
header nav a:hover{color:var(--ink)}
header nav .btn{padding:10px 18px;color:#fff}
@media(max-width:760px){header nav a:not(.btn){display:none}}

/* Первый экран */
.hero{padding:40px 0 96px}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(2.1rem,5vw,3.6rem);margin-bottom:22px}
.hero .lead{font-size:1.2rem;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.facts{display:flex;flex-wrap:wrap;gap:8px 24px;color:var(--muted);font-size:.95rem;list-style:none}
.facts li::before{content:"✓ ";color:var(--blue);font-weight:700}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr}.phone{margin:0 auto}}

/* Телефон с демо-чатом */
.phone{width:100%;max-width:360px;background:var(--ink);border-radius:44px;padding:12px;box-shadow:0 30px 60px -20px rgba(20,32,43,.35)}
.screen{background:var(--chat);border-radius:34px}
.chat-head{background:var(--paper);display:flex;gap:12px;align-items:center;padding:16px 18px;border-radius:34px 34px 0 0}
.ava{width:40px;height:40px;border-radius:50%;background:#F2B544;display:grid;place-items:center;font-size:1.25rem}
.chat-head b{display:block;font-size:.95rem}
.chat-head span{font-size:.8rem;color:var(--blue)}
.msgs{padding:16px 12px 18px;display:flex;flex-direction:column;gap:8px;height:460px;font-size:.92rem}
.m{max-width:82%;padding:9px 13px;border-radius:16px;background:var(--paper);line-height:1.4}
.m.out{align-self:flex-end;background:var(--out);border-bottom-right-radius:5px}
.m.in{border-bottom-left-radius:5px}
.kb{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;max-width:92%}
.kb span{background:rgba(255,255,255,.55);border-radius:9px;text-align:center;padding:7px 4px;font-size:.84rem;font-weight:500}
.kb span.on{background:var(--blue);color:#fff}
@keyframes pop{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.phone-note{text-align:center;color:var(--muted);font-size:.85rem;margin-top:14px}

/* Услуги */
.services{background:var(--paper)}
.svc{margin-top:40px;border-top:1.5px solid var(--ink)}
.svc-row{display:grid;grid-template-columns:1.1fr 1.6fr .6fr .7fr;gap:24px;padding:26px 0;border-bottom:1px solid var(--line);align-items:baseline}
.svc-row h3{font-size:1.1rem}
.svc-row p{color:var(--muted)}
.svc-row .term{color:var(--muted);font-size:.95rem}
.svc-row .price{font-family:var(--display);font-weight:500;font-size:1.1rem;text-align:right;white-space:nowrap}
@media(max-width:760px){
  .svc-row{grid-template-columns:1fr auto;gap:6px 16px}
  .svc-row p{grid-column:1/-1;grid-row:2}
  .svc-row .term{grid-row:3}
  .svc-row .price{grid-row:3}
}
.svc-note{margin-top:20px;color:var(--muted);font-size:.95rem}

/* Работы */
.works{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:40px}
.work a{text-decoration:none;display:block}
.work .shot{aspect-ratio:16/10;border-radius:14px;overflow:hidden;background:var(--line);margin-bottom:16px}
.work img{width:100%;height:100%;object-fit:cover;object-position:top;transition:transform .4s}
.work a:hover img{transform:scale(1.03)}
.work h3{font-size:1.05rem;margin-bottom:6px}
.work p{color:var(--muted);font-size:.97rem}
.work .tag{display:inline-block;font-size:.8rem;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:2px 10px;margin-top:10px}
@media(max-width:900px){.works{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.works{grid-template-columns:1fr}}

.bot-demo{margin-top:28px;background:var(--paper);border-radius:20px;padding:32px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}
.bot-demo h3{font-size:1.25rem;margin-bottom:8px}
.bot-demo p{color:var(--muted);max-width:60ch}
@media(max-width:700px){.bot-demo{grid-template-columns:1fr}}

.apps-title{font-size:1.4rem;margin:72px 0 8px}
.apps{list-style:none;margin-top:28px;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(300px,100%),1fr));border-top:1.5px solid var(--ink)}
.apps a{display:block;text-decoration:none;padding:20px 20px 20px 0;border-bottom:1px solid var(--line);height:100%}
.apps b{display:block;font-family:var(--display);font-weight:500;margin-bottom:4px}
.apps span{color:var(--muted);font-size:.97rem}
.apps a:hover b{color:var(--blue)}

/* Как работаю */
.steps{list-style:none;counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:40px}
.steps li{counter-increment:s;border-top:1.5px solid var(--ink);padding-top:18px}
.steps li::before{content:counter(s);font-family:var(--display);font-weight:700;font-size:2rem;color:var(--blue);display:block;margin-bottom:10px}
.steps h3{font-size:1.02rem;margin-bottom:6px}
.steps p{color:var(--muted);font-size:.97rem}
@media(max-width:900px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}

/* FAQ */
.faq{background:var(--paper)}
.faq-list{margin-top:32px;max-width:780px}
details{border-bottom:1px solid var(--line)}
summary{cursor:pointer;list-style:none;padding:20px 40px 20px 0;font-weight:500;font-size:1.08rem;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:4px;top:14px;font-size:1.6rem;color:var(--blue);transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
details p{padding:0 0 22px;color:var(--muted);max-width:66ch}

/* Контакт */
.contact{text-align:center;padding:110px 0}
.contact h2{font-size:clamp(1.9rem,4.4vw,3rem);max-width:20ch;margin:0 auto 16px}
.contact .lead{margin:0 auto 32px}
.contact .mail{display:block;margin-top:20px;color:var(--muted)}
footer{background:var(--ink);color:#C3CDD6;padding:64px 0 28px;font-size:.95rem}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.foot .logo{color:#fff;font-size:1.3rem;display:inline-block;margin-bottom:12px}
.foot-about p{max-width:36ch;margin-bottom:24px}
.foot-btn{padding:12px 20px}
.foot-col{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.foot-col h3{font-family:var(--body);font-size:.95rem;font-weight:500;color:#fff;margin-bottom:6px}
.foot-col a{text-decoration:none;transition:color .2s}
.foot-col a:hover{color:#fff}
.foot-col span{color:#7F8C98;font-size:.88rem}
.foot-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px 24px;margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);color:#7F8C98;font-size:.85rem}
@media(max-width:760px){.foot{grid-template-columns:1fr 1fr}.foot-about{grid-column:1/-1}}
@media(max-width:420px){.foot{grid-template-columns:1fr}}


/* ===== Полировка и анимации ===== */

:root{--ease:cubic-bezier(.22,1,.36,1)}

/* Шапка: липкая, с размытием после скролла */
header{position:sticky;top:0;z-index:50;transition:background .3s,box-shadow .3s}
header.scrolled{background:rgba(238,241,244,.78);-webkit-backdrop-filter:blur(14px) saturate(1.4);backdrop-filter:blur(14px) saturate(1.4);box-shadow:0 1px 0 var(--line)}
header nav a:not(.btn){position:relative}
header nav a:not(.btn)::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--blue);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
header nav a:not(.btn):hover::after{transform:scaleX(1)}

/* Кнопки: подъём и нажатие */
.btn{transition:background .2s,transform .25s var(--ease),box-shadow .25s}
.btn:not(.btn-ghost){box-shadow:0 6px 18px -6px rgba(42,139,216,.55)}
.btn:hover{transform:translateY(-2px)}
.btn:not(.btn-ghost):hover{box-shadow:0 12px 26px -8px rgba(42,139,216,.6)}
.btn:active{transform:translateY(0) scale(.98)}

/* Первый экран: мягкое свечение за телефоном, загрузка по очереди */
.hero{position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;width:640px;height:640px;right:-120px;top:-80px;border-radius:50%;
  background:radial-gradient(circle at 40% 40%,rgba(42,139,216,.28),rgba(42,139,216,0) 62%),radial-gradient(circle at 70% 70%,rgba(242,181,68,.22),rgba(242,181,68,0) 55%);
  filter:blur(10px);pointer-events:none;animation:drift 14s ease-in-out infinite alternate}
.hero .wrap{position:relative}
@keyframes drift{to{transform:translate(-60px,40px) scale(1.08)}}
.js:not(.ready) .hero h1,.js:not(.ready) .hero .lead,.js:not(.ready) .hero-actions,.js:not(.ready) .facts{opacity:0}
@media(min-width:901px){.js:not(.ready) .hero .phone,.js:not(.ready) .phone-note{opacity:0}}
.ready .hero h1,.ready .hero .lead,.ready .hero-actions,.ready .facts,.ready .hero .phone,.ready .phone-note{animation:rise .9s var(--ease) both}
.hero .lead{animation-delay:.1s}
.hero-actions{animation-delay:.2s}
.facts{animation-delay:.3s}
.ready .hero .phone{animation:rise 1s var(--ease) .25s both,float 7s ease-in-out 1.3s infinite}
.phone-note{animation-delay:.5s}
@keyframes rise{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* Чат: появление сообщений и «печатает…» */
/* Скрытое сообщение не занимает место (display:none), появившееся — анимируется.
   Без transition на opacity: так Safari на iOS гарантированно перерисовывает чат. */
.m.out{transform-origin:right bottom}
.typing{display:inline-flex;gap:4px;padding:12px 14px;background:var(--paper);border-radius:16px;border-bottom-left-radius:5px;align-self:start}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--muted);animation:dot 1s infinite}
.typing i:nth-child(2){animation-delay:.15s}
.typing i:nth-child(3){animation-delay:.3s}
@keyframes dot{0%,60%,100%{opacity:.3;transform:none}30%{opacity:1;transform:translateY(-3px)}}
.kb span{transition:background .3s,color .3s}

/* Появление блоков при скролле */
.js .reveal{opacity:0;transform:translateY(32px);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:calc(var(--i,0) * 80ms)}
.js .reveal.in{opacity:1;transform:none}

/* Услуги: подсветка строки */
.svc-row{position:relative;transition:padding .35s var(--ease)}
.svc-row::before{content:"";position:absolute;inset:0 -20px;background:var(--bg);border-radius:14px;opacity:0;transition:opacity .3s;z-index:-1}
.svc{position:relative;z-index:0}
.svc-row:hover::before{opacity:1}
.svc-row .price{transition:color .3s}
.svc-row:hover .price{color:var(--blue)}

/* Работы: подъём карточки */
.work a{transition:transform .4s var(--ease)}
.work .shot{transition:box-shadow .4s var(--ease)}
.work a:hover{transform:translateY(-6px)}
.work a:hover .shot{box-shadow:0 22px 40px -18px rgba(20,32,43,.4)}
.work img{transition:transform .8s var(--ease)}
.work a:hover img{transform:scale(1.05)}

.bot-demo{transition:box-shadow .4s var(--ease)}
.bot-demo:hover{box-shadow:0 20px 40px -24px rgba(20,32,43,.35)}

/* Приложения: полоска слева при наведении */
.apps a{position:relative;transition:padding .35s var(--ease)}
.apps a::before{content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:3px;background:var(--blue);transform:scaleY(0);transition:transform .35s var(--ease)}
.apps a:hover{padding-left:16px}
.apps a:hover::before{transform:scaleY(1)}
.apps b{transition:color .3s}

/* Шаги: цифра заполняется при появлении */
.steps li{border-top-color:var(--line);position:relative}
.steps li::after{content:"";position:absolute;left:0;top:-1.5px;height:1.5px;width:100%;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform 1s var(--ease) calc(var(--i,0) * 150ms + .2s)}
.steps li.in::after,html:not(.js) .steps li::after{transform:scaleX(1)}

/* FAQ: плавное раскрытие (Chrome/Edge; в остальных — мгновенно) */
details{overflow:hidden}
summary{transition:color .2s}
summary:hover{color:var(--blue)}
summary::after{transition:transform .35s var(--ease)}

/* Финальный блок */
.contact{position:relative;overflow:hidden}
.contact::before{content:"";position:absolute;inset:auto 50% -260px auto;transform:translateX(50%);width:720px;height:420px;border-radius:50%;background:radial-gradient(closest-side,rgba(42,139,216,.2),transparent);pointer-events:none}
.contact .wrap{position:relative}

/* Телефон на мобильных: компактнее и без «парения» */
@media(max-width:900px){
  .ready .hero .phone,.hero .phone{animation:none}
  .hero::before{width:420px;height:420px;right:-160px;top:auto;bottom:-60px}
}
@media(max-width:600px){
  .hero{padding:24px 0 64px}
  .phone{max-width:300px;border-radius:38px;padding:10px}
  .screen{border-radius:30px}
  .chat-head{border-radius:30px 30px 0 0}
  .chat-head{padding:12px 14px}
  .ava{width:34px;height:34px;font-size:1.05rem}
  .msgs{height:405px;padding:12px 10px 14px;gap:7px;font-size:.84rem}
  .m{padding:8px 11px}
  .kb span{padding:6px 2px;font-size:.8rem}
}

/* ===== Демо-чат: бесконечный цикл на чистом CSS (без JS) ===== */
.slot{display:grid;max-width:82%}
.slot>*{grid-area:1/1;justify-self:start;align-self:start}
.slot .m{max-width:none}
.msgs .m,.msgs .kb,.msgs .typing{animation-duration:14s;animation-iteration-count:infinite;animation-timing-function:linear;animation-fill-mode:both}
.c1{animation-name:c1}
@keyframes c1{0%,8.57%{opacity:0;transform:translateY(8px)}11.57%,90%{opacity:1;transform:none}93%,100%{opacity:0;transform:none}}
.c2{animation-name:c2}
@keyframes c2{0%,14.29%{opacity:0;transform:translateY(8px)}17.29%,90%{opacity:1;transform:none}93%,100%{opacity:0;transform:none}}
.c3{animation-name:c3}
@keyframes c3{0%,24.29%{opacity:0;transform:translateY(8px)}27.29%,90%{opacity:1;transform:none}93%,100%{opacity:0;transform:none}}
.c4{animation-name:c4}
@keyframes c4{0%,27.14%{opacity:0;transform:translateY(8px)}30.14%,90%{opacity:1;transform:none}93%,100%{opacity:0;transform:none}}
.c5{animation-name:c5}
@keyframes c5{0%,42.14%{opacity:0;transform:translateY(8px)}45.14%,90%{opacity:1;transform:none}93%,100%{opacity:0;transform:none}}
.c6{animation-name:c6}
@keyframes c6{0%,48.57%{opacity:0;transform:translateY(8px)}51.57%,90%{opacity:1;transform:none}93%,100%{opacity:0;transform:none}}
.t1{animation-name:t1}
@keyframes t1{0%,2.14%{opacity:0}3.14%,8.07%{opacity:1}8.57%,100%{opacity:0}}
.t3{animation-name:t3}
@keyframes t3{0%,17.86%{opacity:0}18.86%,23.79%{opacity:1}24.29%,100%{opacity:0}}
.t5{animation-name:t5}
@keyframes t5{0%,35.71%{opacity:0}36.71%,41.64%{opacity:1}42.14%,100%{opacity:0}}
.kb .on{animation:kbon 14s linear infinite both}
@keyframes kbon{0%,32.14%{background:rgba(255,255,255,.55);color:var(--ink)}34.14%,100%{background:var(--blue);color:#fff}}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .msgs .typing{visibility:hidden}
  .js .reveal{opacity:1;transform:none}
  .js .hero *{opacity:1!important}
}