/* MULTI — apex (multi.ru).
   Светлая типографическая страница: белый фон, чернильные заголовки,
   цепочка продуктов, индекс строками, моно-лейблы, один акцент из логотипа.
   Анимация — только линии, точки и появление секций. */

@font-face{font-family:Inter;src:url('/fonts/Inter-400.ttf') format('truetype');font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:Inter;src:url('/fonts/Inter-600.ttf') format('truetype');font-style:normal;font-weight:600;font-display:swap}

:root{
  color-scheme:light;
  --paper:#ffffff;
  --paper-2:#f7f8fa;
  --line:#e6e8ee;
  --line-2:#d3d9e4;
  --ink:#0b1220;
  --text:#0b1220;
  --text-2:#3c4658;
  --muted:#5b6780;
  --muted-2:#6b7689;
  --accent:#1f4dff;
  --radius:12px;
  --shell:1160px;
  --gutter:32px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--text);
  font-family:Inter,Arial,Helvetica,sans-serif;font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
p{margin:0;text-wrap:pretty}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:-.035em;line-height:1.05;text-wrap:balance}
::selection{background:var(--accent);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}
[hidden]{display:none !important}

.shell{width:min(var(--shell),calc(100% - var(--gutter)*2));margin-inline:auto}
.grid12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px}
section[id]{scroll-margin-top:88px}
.skip{position:fixed;left:8px;top:8px;z-index:100;padding:12px 18px;border-radius:8px;background:var(--ink);color:#fff;font-size:14px;font-weight:600;transform:translateY(-160%);transition:transform .18s var(--ease)}
.skip:focus{transform:none}

/* Служебная типографика */
.eyebrow{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.18em;text-transform:uppercase;color:var(--muted-2);line-height:1}
.lead{font-size:clamp(17px,1.15vw,18.5px);line-height:1.55;color:var(--text-2);max-width:620px}
.dot{width:6px;height:6px;border-radius:50%;border:1px solid var(--line-2);flex:none}
.dot--on{background:var(--accent);border-color:var(--accent)}
.link{font-size:15px;font-weight:600;color:var(--text);display:inline-flex;align-items:center;gap:7px;border-bottom:1px solid transparent;padding-bottom:2px;transition:border-color .18s var(--ease)}
.link span{font-size:13px;transition:transform .18s var(--ease)}
.link:hover{border-bottom-color:var(--text)}
.link:hover span{transform:translateX(3px)}

/* Кнопки */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:8px;border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:-.01em;white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.btn--primary{background:var(--ink);color:#fff}
.btn--primary:hover{background:#1a2437}
.btn--primary span{font-size:13px}

/* Шапка */
.top{position:fixed;inset:0 0 auto;z-index:60;border-bottom:1px solid transparent;transition:background-color .2s var(--ease),border-color .2s var(--ease)}
.top.is-stuck{background:rgba(255,255,255,.88);-webkit-backdrop-filter:saturate(140%) blur(14px);backdrop-filter:saturate(140%) blur(14px);border-bottom-color:var(--line)}
.top__inner{display:flex;align-items:center;gap:32px;min-height:76px}
.brand{display:inline-flex;align-items:center;flex:none}
.brand__logo{height:42px;width:auto}
.nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav a{font-size:14.5px;color:var(--muted);transition:color .18s var(--ease)}
.nav a:hover{color:var(--text)}
.nav__cta{display:none}
.top__cta{min-height:42px;padding-inline:16px;font-size:14px;margin-left:8px}
.menu{display:none;align-items:center;min-height:42px;padding:0 14px;margin-left:auto;border:1px solid var(--line-2);border-radius:8px;background:var(--paper);color:var(--text);font:inherit;font-size:14px;cursor:pointer}

/* Первый экран */
.hero{padding:152px 0 88px}
.hero h1{font-size:clamp(38px,4vw,64px);line-height:1.02;letter-spacing:-.04em;margin:18px 0 24px;max-width:860px;text-wrap:wrap}
.hero .lead{max-width:600px}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:24px;margin-top:34px}

/* Посимвольная сборка заголовка */
.hero h1 .w{display:inline-block;white-space:nowrap}
.hero h1 .c{
  display:inline-block;opacity:0;transform:translateY(.12em);filter:blur(3px);
  transition:opacity .55s var(--ease),transform .55s var(--ease),filter .55s var(--ease);
  transition-delay:calc(var(--i) * 14ms);
}
.hero h1.is-in .c{opacity:1;transform:none;filter:none}
@media (prefers-reduced-motion: reduce){
  .hero h1 .c{opacity:1;transform:none;filter:none;transition:none}
}

/* Цепочка продуктов */
.chain{position:relative;margin-top:72px}
.chain__list{
  position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
  margin:0;padding:26px 0 0;list-style:none;
}
.chain__item{position:relative;display:flex;flex-direction:column;gap:4px;min-width:0}
.chain__item::before{
  content:"";position:absolute;left:8px;top:-26px;height:1px;width:calc(100% + 16px);
  background:var(--line-2);transform:scaleX(0);transform-origin:left;
  transition:transform .5s var(--ease);
}
.chain__item:last-child::before{display:none}
.chain.is-live .chain__item::before{transform:scaleX(1)}
.chain.is-live .chain__item:nth-child(2)::before{transition-delay:.15s}
.chain.is-live .chain__item:nth-child(3)::before{transition-delay:.3s}
.chain.is-live .chain__item:nth-child(4)::before{transition-delay:.45s}
html:not(.has-js) .chain__item::before{transform:scaleX(1);transition:none}
.chain__dot{
  position:absolute;left:0;top:-30px;z-index:1;width:7px;height:7px;border-radius:50%;
  background:var(--paper);border:1px solid var(--line-2);
}
.chain__dot.is-on{background:var(--accent);border-color:var(--accent);animation:dot-breathe 3.6s ease-in-out infinite}
.chain__name{font-size:14.5px;font-weight:600;letter-spacing:-.01em}
.chain__state{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-2)}
.chain__pulse{
  position:absolute;left:0;top:-3px;z-index:2;width:6px;height:6px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 5px rgba(31,77,255,.12);opacity:0;pointer-events:none;
}
.chain.is-live .chain__pulse{animation:chain-run 2.6s var(--ease) .8s 1 both}
@keyframes chain-run{
  0%{left:0;opacity:0}
  10%{opacity:1}
  85%{opacity:1}
  100%{left:var(--chain-end, 76%);opacity:0}
}
@keyframes dot-breathe{50%{opacity:.5}}

/* Секции */
.section{padding:88px 0;border-top:1px solid var(--line)}
.section--tint{background:var(--paper-2)}
.section__head{max-width:760px;margin-bottom:40px}
.section__head h2{font-size:clamp(30px,3.1vw,42px);margin-top:16px}
.section__head .lead{margin-top:16px}

/* Продуктовый индекс */
.index{border-top:1px solid var(--line-2)}
.row{
  position:relative;display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px;align-items:start;
  padding:26px 10px;margin-inline:-10px;border-bottom:1px solid var(--line);
  transition:background-color .15s var(--ease);
}
.row__name{grid-column:1 / span 3}
.row__copy{grid-column:4 / span 6}
.row__link{grid-column:11 / span 2}
.row:hover{background:#fafbfd}
.row__name{font-size:19px;letter-spacing:-.02em;line-height:1.3;grid-column:1 / span 3}
.row__copy{font-size:14.5px;line-height:1.55;color:var(--muted);max-width:640px;grid-column:4 / span 6}
.row__link{justify-self:end;padding-top:2px;font-size:14px;font-weight:600;white-space:nowrap;transition:color .18s var(--ease)}
.row__link::after{content:"";position:absolute;inset:0;z-index:1}
.row__link:hover{color:var(--accent)}
.row__link span{display:inline-block;font-size:12px;transition:transform .18s var(--ease)}
.row:hover .row__link span{transform:translateX(2px)}
.row__link--off{font-weight:500;color:var(--muted-2)}

/* Услуги */
.cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:64px}
.col{border-top:1px solid var(--line-2);padding-top:24px}
.col h3{font-size:21px;margin-bottom:10px}
.col p{font-size:14.5px;line-height:1.6;color:var(--muted);max-width:460px;margin-bottom:20px}

/* О бренде */
.about{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px}
.about__head{grid-column:1 / span 5}
.spec{grid-column:7 / span 6}
.about__head h2{font-size:clamp(28px,2.9vw,38px);margin:16px 0 18px;max-width:460px}
.about__head .lead{max-width:420px}
.spec{margin:0}
.spec__row{display:grid;grid-template-columns:150px minmax(0,1fr);gap:28px;padding:22px 0;border-bottom:1px solid var(--line)}
.spec__row:first-child{padding-top:0}
.spec dt{font-family:var(--mono);font-size:10.5px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2);padding-top:4px}
.spec dd{margin:0;font-size:14.5px;line-height:1.6;color:var(--text-2)}

/* Контакты */
.contact{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px}
.contact__main{grid-column:1 / span 6}
.details{grid-column:8 / span 5}
.contact h2{font-size:clamp(30px,3.1vw,42px);margin:16px 0 18px}
.contact .lead{max-width:460px}
.contact__links{margin-top:32px;border-top:1px solid var(--line-2)}
.contact__row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:17px 0;border-bottom:1px solid var(--line);font-size:15px;transition:color .18s var(--ease)}
.contact__row b{font-weight:600}
.contact__row span{font-size:13.5px;color:var(--muted-2)}
.contact__row i{font-style:normal;margin-left:6px;transition:transform .18s var(--ease);display:inline-block}
.contact__row:hover{color:var(--accent)}
.contact__row:hover i{transform:translateX(3px)}
.details{font-style:normal;display:flex;flex-direction:column;gap:14px;font-size:13px;line-height:1.65;color:var(--muted-2)}
.details__label{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted-2);margin-bottom:2px}
.details p{margin:0}
.details a{color:var(--muted);transition:color .18s var(--ease)}
.details a:hover{color:var(--text)}

/* Подвал */
.foot{border-top:1px solid var(--line);padding:56px 0 28px}
.foot__grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px}
.foot__brand{grid-column:1 / span 4}
.foot__grid nav:nth-of-type(1){grid-column:5 / span 3}
.foot__grid nav:nth-of-type(2){grid-column:8 / span 2}
.foot__grid nav:nth-of-type(3){grid-column:10 / span 3}
.foot__brand img{height:28px;width:auto}
.foot__brand p{margin-top:18px;font-size:12.5px;line-height:1.6;color:var(--muted-2)}
.foot nav{display:flex;flex-direction:column;gap:8px;font-size:13.5px;color:var(--muted)}
.foot__label{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted-2);margin-bottom:6px}
.foot nav a{color:var(--muted);transition:color .18s var(--ease)}
.foot nav a:hover{color:var(--text)}
.foot nav span{color:var(--muted-2)}
.foot__bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;margin-top:48px;padding-top:20px;border-top:1px solid var(--line);font-size:12px;color:var(--muted-2)}
.foot__bottom a{color:var(--muted);transition:color .18s var(--ease)}
.foot__bottom a:hover{color:var(--text)}
.no-script{position:fixed;z-index:100;inset:auto 12px 12px;margin:0;padding:14px;background:#fff;border:1px solid var(--line-2);border-radius:10px;font-size:14px}
.no-script a{color:var(--accent)}

/* Адаптив */
@media(max-width:1023px){
  .hero{padding:128px 0 72px}
  .hero h1{max-width:760px}
  .chain{margin-top:56px}
  .about,.contact{grid-template-columns:1fr;gap:36px}
  .about__head,.spec,.contact__main,.details{grid-column:1 / -1}
  .details{border-top:0;padding-top:0}
  .section{padding:72px 0}
  .cols{gap:40px}
  .foot__grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot__brand,.foot__grid nav{grid-column:auto;min-width:0}
  .foot__brand{grid-column:1 / -1}
}

@media(max-width:860px){
  .nav{
    display:none;position:fixed;left:0;right:0;top:76px;z-index:55;
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    padding:8px var(--gutter) 22px;background:var(--paper);border-bottom:1px solid var(--line);
    box-shadow:0 18px 40px -24px rgba(11,18,32,.25);
  }
  .nav.is-open{display:flex}
  .nav a{padding:13px 0;border-bottom:1px solid var(--line);font-size:16px;color:var(--muted)}
  .nav a:hover{color:var(--text)}
  .nav__cta{display:inline-flex;align-items:center;justify-content:center;gap:8px;margin-top:16px;min-height:48px;border:0 !important;border-bottom:0 !important;border-radius:8px;background:var(--ink);color:#fff !important;font-weight:600}
  .top__cta{display:none}
  .menu{display:inline-flex}
  .cols{grid-template-columns:1fr;gap:32px}
  .spec__row{grid-template-columns:118px minmax(0,1fr);gap:20px}
  .row{grid-template-columns:1fr;gap:10px}
  .row__name,.row__copy,.row__link{grid-column:1 / -1;min-width:0}
  .row__copy{max-width:none}
  .row__link{justify-self:start;padding-top:6px}
}

@media(max-width:599px){
  :root{--gutter:18px}
  .top__inner{min-height:64px;gap:16px}
  .brand__logo{height:34px}
  .nav{top:64px}
  .hero{padding:96px 0 56px}
  .hero h1{font-size:38px;letter-spacing:-.04em}
  .lead{font-size:16px}
  .actions{gap:18px;margin-top:28px}
  .chain{margin-top:44px}
  .chain__list{grid-template-columns:1fr;gap:18px;padding:0 0 0 22px}
  .chain__item::before{display:none}
  .chain__list{border-left:1px solid var(--line-2)}
  .chain__dot{left:-25px;top:6px}
  .chain__pulse{display:none}
  .section{padding:56px 0}
  .section__head{margin-bottom:28px}
  .row{padding:20px 0;margin-inline:0}
  .row__name{font-size:18px}
  .row__copy{font-size:14px}
  .about__head h2{margin:14px 0}
  .spec__row{grid-template-columns:1fr;gap:6px;padding:18px 0}
  .spec dt{padding-top:0}
  .contact__row{font-size:14.5px}
  .foot{padding:40px 0 24px}
  .foot__grid{grid-template-columns:1fr 1fr;gap:28px}
  .foot__brand,.foot__grid nav:nth-of-type(1),.foot__grid nav:nth-of-type(2),.foot__grid nav:nth-of-type(3){grid-column:auto}
  .foot__brand{grid-column:1 / -1}
  .foot__bottom{margin-top:32px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .chain__dot.is-on,.chain.is-live .chain__pulse{animation:none}
  .chain__list::before{transform:scaleX(1);transition:none}
  .link:hover span,.contact__row:hover i,.row:hover .row__link span{transform:none}
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}