/* evleo.work — design system "A · Система"
   Layout: строгая 12-колоночная логика, крупный гротеск, один синий акцент; работы — главное. */
:root{
  --bg:#e9ecef;        /* холодная бумага */
  --paper:#f5f6f7;     /* поверхности: формы, карточки фактов */
  --ink:#101215;
  --muted:#4a5058;
  --soft:#7a8089;
  --line:#c5cad0;
  --accent:#2b3fe0;    /* единственный акцент */
  --accent-ink:#ffffff;
  --dark:#101215;      /* CTA-блок */
  --f-display:"Unbounded",system-ui,sans-serif;
  --f-body:"Onest",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,monospace;
  --max:1240px;
  --gut:clamp(16px,4vw,40px);
  --r:6px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.6 var(--f-body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{margin:0;font-weight:700;text-wrap:balance}
h1{font:800 clamp(36px,6.4vw,84px)/1 var(--f-display);letter-spacing:-.025em}
h2{font:700 clamp(26px,3.4vw,44px)/1.08 var(--f-display);letter-spacing:-.02em}
h3{font:600 20px/1.3 var(--f-body);letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.wrap{max-width:var(--max);margin:0 auto;padding-inline:var(--gut)}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 12px;z-index:100}
.skip:focus{left:8px}
.eyebrow{font:500 12px/1.4 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--soft)}
.lead{font-size:clamp(18px,1.6vw,21px);line-height:1.5;color:var(--muted);max-width:60ch}
.muted{color:var(--soft);font-size:15px}
.link{font-weight:500;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.link:hover{color:var(--accent)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:var(--accent-ink);border:0;border-radius:999px;padding:14px 24px;font:600 16px/1 var(--f-body);text-decoration:none;cursor:pointer;transition:transform .25s var(--ease),background .2s}
.btn:hover{transform:translateY(-2px);background:#1f30c4}
.btn--sm{padding:10px 18px;font-size:14px}
.btn--light{background:#fff;color:var(--ink)}
.btn--light:hover{background:#e7e9ff}
.btn--ghost-light{background:transparent;color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.35)}
.btn--ghost-light:hover{background:rgba(255,255,255,.08)}

/* header */
.top{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .3s}
.top.is-scrolled{border-color:var(--line)}
.top__in{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:600;font-size:15px}
.brand img{width:34px;height:34px}
.nav{display:flex;align-items:center;gap:26px;font-size:15px;font-weight:500}
.nav a{text-decoration:none}
.nav a:not(.btn):hover,.nav a[aria-current]{color:var(--accent)}
.nav__lang{font:500 13px var(--f-mono);letter-spacing:.06em;border:1px solid var(--line);border-radius:999px;padding:5px 10px}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:999px;padding:8px 14px;font:500 14px var(--f-body);color:var(--ink);cursor:pointer}
@media (max-width:860px){
  .brand span{display:none}
  .menu-btn{display:block}
  .nav{position:fixed;inset:72px 0 auto 0;flex-direction:column;align-items:flex-start;gap:4px;background:var(--bg);padding:12px var(--gut) 24px;border-bottom:1px solid var(--line);font-size:22px;transform:translateY(-8px);opacity:0;visibility:hidden;transition:.25s var(--ease)}
  .nav a:not(.btn):not(.nav__lang){padding:8px 0}
  .nav__lang{margin-top:8px}
  .nav .btn{margin-top:12px;font-size:16px}
  .nav.is-open{transform:none;opacity:1;visibility:visible}
  .no-js .nav{position:static;opacity:1;visibility:visible;transform:none;flex-direction:row;flex-wrap:wrap;font-size:15px;padding:0;border:0}
}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:clamp(24px,4vw,64px);align-items:end;padding-block:clamp(48px,8vw,112px) clamp(32px,4vw,48px)}
.hero__title{font-size:clamp(38px,6vw,84px);line-height:1}
.hero__title em{font-style:normal;color:var(--accent)}
.hero__side{display:grid;gap:24px;color:var(--muted)}
.hero__actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px}
@media (max-width:860px){.hero{grid-template-columns:1fr}}

/* marquee */
.marq{overflow:hidden;border-block:1px solid var(--line);padding-block:16px;font:500 14px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;white-space:nowrap}
.marq__track{display:inline-flex;gap:28px;animation:marq 38s linear infinite;padding-left:28px}
.marq__track i{font-style:normal;color:var(--accent)}
@keyframes marq{to{transform:translateX(-50%)}}

/* sections */
.section{padding-block:clamp(56px,8vw,112px) 0}
.section--tight{padding-top:24px}
.section__head{display:flex;justify-content:space-between;align-items:end;gap:24px;flex-wrap:wrap;margin-bottom:24px}
.section__head p{color:var(--muted);max-width:42ch}
.page-head{padding-block:clamp(48px,7vw,96px) 16px;display:grid;gap:20px}
.page-head--center{min-height:50vh;align-content:center}

/* filters */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.chip{font:500 14px var(--f-body);color:var(--ink);background:transparent;border:1px solid var(--line);border-radius:999px;padding:8px 16px;cursor:pointer;transition:.2s}
.chip:hover{border-color:var(--ink)}
.chip[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.no-js .filters{display:none}

/* grid + cards */
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(48px,6vw,72px) clamp(14px,1.6vw,20px)}
.card{display:grid;gap:10px;align-content:start;text-decoration:none;color:inherit}
.card[hidden]{display:none}
.card--big{grid-column:span 2;grid-row:span 2;align-content:stretch;grid-template-rows:minmax(0,1fr) auto}
.card__media{position:relative;overflow:hidden;border-radius:var(--r);background:#d5d9de;aspect-ratio:4/3}
.card--big .card__media{aspect-ratio:auto;height:100%;min-height:320px}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.card:hover .card__media img{transform:scale(1.04)}
.card__meta{display:grid;gap:6px}
.card__meta h3{font-size:18px}
.card__meta p{color:var(--muted);font-size:15px;line-height:1.5}
.card__tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.card__tags span{font:500 11px var(--f-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--soft)}
.card__tags span+span::before{content:"· ";}
.card__note{font:500 12px var(--f-mono);color:var(--accent);margin-top:4px}
@media (max-width:960px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.card--big{grid-column:span 2;grid-row:auto}.card--big .card__media{aspect-ratio:16/10;height:auto;min-height:0}}
@media (max-width:600px){.grid{grid-template-columns:1fr}.card--big{grid-column:auto}}

/* concept tile */
.concept{background:var(--brand);display:grid;place-items:center}
.card__media .concept__logo{object-fit:contain;width:46%;max-width:220px;height:auto;position:relative;z-index:1;transition:transform .8s var(--ease)}
.card:hover .concept__logo{transform:scale(1.05)}
.concept__word{font:800 clamp(28px,3vw,40px)/1 var(--f-display);color:#fff;position:relative;z-index:1}
.concept__grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.09) 1px,transparent 1px);background-size:28px 28px}
.concept__badge{position:absolute;left:12px;top:12px;z-index:2;background:#fff;color:var(--ink);font:500 11px var(--f-mono);letter-spacing:.06em;text-transform:uppercase;padding:5px 9px;border-radius:999px}

/* steps */
.steps h2{margin-bottom:28px}
.steps__list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;counter-reset:s}
.steps__list li{counter-increment:s;border-top:2px solid var(--ink);padding-top:20px;display:grid;gap:10px;align-content:start}
.steps__list li::before{content:"0" counter(s);font:500 13px var(--f-mono);color:var(--accent)}
.steps__list p{color:var(--muted)}
@media (max-width:760px){.steps__list{grid-template-columns:1fr}}

/* CTA */
.cta{margin-top:clamp(64px,9vw,128px);background:var(--dark);color:#fff}
.cta__in{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:32px;align-items:end;padding-block:clamp(48px,7vw,96px)}
.cta h2{font-size:clamp(28px,4vw,52px)}
.cta p{color:#b9bec5;margin-top:16px;max-width:44ch}
.cta__actions{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-start}
.cta__wa{display:flex;flex-direction:column;align-items:center;gap:12px}
.cta__mail{font:400 14px var(--f-mono);color:#b9bec5;user-select:all}
@media (max-width:860px){.cta__in{grid-template-columns:1fr}}

/* case page */
.case__head{padding-block:clamp(32px,5vw,64px) 28px;display:grid;gap:16px}
.back{font-size:14px;color:var(--muted);text-decoration:none}
.back:hover{color:var(--accent)}
.case__head h1{font-size:clamp(34px,6vw,80px)}
.case__cover img{width:100%;border-radius:var(--r)}
.case__intro{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:clamp(24px,5vw,72px);padding-block:clamp(40px,6vw,80px) 0}
.facts{margin:0;display:grid;gap:0;align-content:start;border-top:1px solid var(--ink)}
.facts div{display:grid;grid-template-columns:110px minmax(0,1fr);gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.facts dt{font:500 12px/1.8 var(--f-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--soft)}
.facts dd{margin:0;font-size:15px}
.prose{display:grid;gap:14px;max-width:66ch}
.prose ul{margin:0;padding-left:20px;display:grid;gap:6px}
.prose--doc{max-width:72ch}
.case__sec{padding-top:clamp(48px,7vw,96px);display:grid;gap:24px}
.case__text{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:clamp(16px,5vw,72px)}
.case__text h2{font-size:clamp(24px,2.6vw,36px)}
.case__text:not(:has(h2)) .prose{grid-column:2}
@media (max-width:860px){.case__intro,.case__text{grid-template-columns:1fr}.case__text:not(:has(h2)) .prose{grid-column:auto}}
.gal{display:grid;gap:var(--gg)}
.gal__row{display:flex;gap:var(--gg);align-items:flex-start}
.gal{--gg:clamp(10px,1.4vw,16px)}
.gal--captions{row-gap:clamp(36px,4vw,48px)}
.gal__row--solo{margin-inline:auto;width:100%}
.gal__row--half{max-width:50%}
.gal figure{margin:0;display:grid;gap:8px;min-width:0}
.gal figcaption{font-size:14px;color:var(--muted)}
.gal img{width:100%;height:auto;border-radius:var(--r);background:#d5d9de}
@media (max-width:600px){.gal__row{flex-direction:column}.gal__row figure{flex:none!important;width:100%}.gal__row[style],.gal__row--half{max-width:none!important}}
.zoom{all:unset;cursor:zoom-in;display:block;border-radius:var(--r)}
.zoom:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.next{padding-block:40px}
.next a{display:grid;gap:8px;text-decoration:none;border-top:1px solid var(--ink);padding-top:20px}
.next strong{font:700 clamp(24px,3vw,40px)/1.1 var(--f-display)}
.next a:hover strong{color:var(--accent)}
.lightbox{border:0;padding:0;background:transparent;max-width:96vw;max-height:94vh}
.lightbox::backdrop{background:rgba(10,12,14,.9)}
.lightbox img{max-width:96vw;max-height:94vh;object-fit:contain}
.lightbox__close{position:fixed;top:16px;right:16px;width:44px;height:44px;border-radius:50%;border:0;background:#fff;font-size:24px;cursor:pointer}

/* services */
.svc{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--ink)}
.svc__item{display:grid;gap:10px;align-content:start;padding:28px 28px 32px 0;border-bottom:1px solid var(--line)}
.svc__item:nth-child(even){padding-left:28px;border-left:1px solid var(--line)}
.svc__item h2{font-size:clamp(22px,2.2vw,30px)}
.svc__item p{color:var(--muted)}
.svc__ex{font-size:14px}
.svc__ex span{font-family:var(--f-mono);font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--soft)}
.svc__ex a{color:var(--ink)}
.svc__ex a:hover{color:var(--accent)}
.formats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:28px}
.formats div{background:var(--paper);border-radius:var(--r);padding:24px;display:grid;gap:10px;align-content:start}
.formats p{color:var(--muted)}
@media (max-width:760px){.svc{grid-template-columns:1fr}.svc__item,.svc__item:nth-child(even){padding:24px 0;border-left:0}.formats{grid-template-columns:1fr}}

/* about */
.about{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(24px,5vw,72px);align-items:end;padding-block:clamp(40px,6vw,80px) 0}
.about__photo img{width:100%;border-radius:var(--r);aspect-ratio:4/5;object-fit:cover}
.about__text{display:grid;gap:24px;justify-items:start}
.about__text h1{font-size:clamp(32px,5vw,68px)}
@media (max-width:760px){.about{grid-template-columns:1fr}}
.exp{list-style:none;margin:28px 0 0;padding:0;border-top:1px solid var(--ink)}
.exp li{display:grid;grid-template-columns:220px minmax(0,1fr);gap:24px;padding:24px 0;border-bottom:1px solid var(--line)}
.exp li>div{display:grid;gap:6px;max-width:70ch}
.exp__when{font:500 13px/1.7 var(--f-mono);color:var(--soft)}
.exp__loc{font:400 15px var(--f-body);color:var(--soft);white-space:nowrap}
.exp__role{font-size:15px;color:var(--accent);font-weight:500}
.exp p:last-child{color:var(--muted)}
@media (max-width:760px){.exp li{grid-template-columns:1fr;gap:8px}}

/* contact + form */
.contact{padding-bottom:clamp(56px,8vw,112px)!important;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:clamp(24px,5vw,72px);padding-block:clamp(40px,6vw,80px) 0;align-items:start}
.contact__side{display:grid;gap:20px}
.contact__side h1{font-size:clamp(34px,5vw,64px)}
.direct{list-style:none;margin:0;padding:0;border-top:1px solid var(--ink)}
.direct li{display:grid;grid-template-columns:100px minmax(0,1fr);gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.direct span{font:500 12px/1.9 var(--f-mono);text-transform:uppercase;letter-spacing:.06em;color:var(--soft)}
.direct a{text-decoration:none;font-weight:500;overflow-wrap:anywhere}
.direct a:hover{color:var(--accent)}
@media (max-width:860px){.contact{grid-template-columns:1fr}}
.form{background:var(--paper);border-radius:var(--r);padding:clamp(20px,3vw,36px);display:grid;gap:20px}
.form .field{display:grid;gap:8px;min-width:0}
.form .field label{font-size:14px;font-weight:500}
.form input:not([type=checkbox]),.form select,.form textarea{font:400 16px/1.4 var(--f-body);color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:4px;padding:12px 14px;width:100%}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid var(--accent);outline-offset:0;border-color:transparent}
.form textarea{resize:vertical}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:600px){.form__row{grid-template-columns:1fr}}
.form fieldset{border:0;margin:0;padding:0;display:grid;gap:10px}
.form legend{font-size:14px;font-weight:500;margin-bottom:10px}
.checks{display:flex;flex-wrap:wrap;gap:8px}
.check{display:inline-flex!important;align-items:center;gap:0!important;cursor:pointer}
.check input{position:absolute;opacity:0;pointer-events:none}
.check span{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;font-weight:400;transition:.15s}
.check input:checked+span{background:var(--ink);color:#fff;border-color:var(--ink)}
.check input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}
.form__consent{font-size:13px;color:var(--soft)}
.form .btn{justify-self:start}
.hp{position:absolute;left:-9999px}

/* footer */
.foot{border-top:1px solid var(--line);margin-top:0}
.foot__in{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-block:24px;font-size:14px;color:var(--soft)}
.foot a{color:var(--soft)}
.page-case .foot,.page-home .foot{border-top:0}

/* reveal on scroll (content stays visible without JS) */
.js [data-reveal]{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js [data-reveal].is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .marq__track{animation:none}
  .js [data-reveal]{opacity:1;transform:none;transition:none}
  *{transition:none!important}
}