:root{
  --paper:#f4f6f9;
  --ink:#0e1726;
  --muted:#5b6474;
  --line:rgba(29,78,216,.18);
  --accent:#1d4ed8;
  --amber:#f59e0b;
  --maxw:1220px;
  --mono:"IBM Plex Mono",ui-monospace,"Courier New",monospace;
  --sans:"Inter Tight",system-ui,"Segoe UI",sans-serif;
  --hand:"Caveat",cursive;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--paper);color:var(--ink);line-height:1.55;overflow-x:hidden;-webkit-font-smoothing:antialiased}
/* миллиметровка всего холста */
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(29,78,216,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(29,78,216,.055) 1px,transparent 1px),
    linear-gradient(rgba(29,78,216,.09) 1px,transparent 1px),
    linear-gradient(90deg,rgba(29,78,216,.09) 1px,transparent 1px);
  background-size:28px 28px,28px 28px,140px 140px,140px 140px;
}
::selection{background:var(--accent);color:#fff}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px;position:relative;z-index:1}
section{padding:96px 0;position:relative}
h1,h2,h3{font-weight:800;letter-spacing:-.02em;line-height:1.05}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.mono{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}

/* прогресс скролла */
#bar{position:fixed;top:0;left:0;height:3px;background:var(--accent);z-index:60;width:0}

/* ===== header ===== */
header{position:fixed;inset:0 0 auto;z-index:50;background:rgba(244,246,249,.92);backdrop-filter:blur(8px);transition:box-shadow .25s}
header.scrolled{box-shadow:0 1px 0 var(--ink)}
.lang{display:flex;align-items:center;gap:6px;margin-left:auto;margin-right:20px;font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.14em;white-space:nowrap;flex:0 0 auto}
.lang a{color:var(--muted);transition:color .2s}
.lang a:hover{color:var(--ink)}
.lang a.on{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.lang span{color:var(--muted);opacity:.5}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.logo{font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.06em;display:flex;align-items:center;gap:12px;flex:0 0 auto;white-space:nowrap}
.logo .name{display:inline-block}
.logo .mark{font-weight:800;font-size:15px;letter-spacing:0}
.logo .mark i{color:var(--amber);font-style:normal}
.nav-links{display:flex;gap:34px;flex:0 0 auto;white-space:nowrap}
.nav-links a{position:relative}
.nav-links a.active{color:var(--accent)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:1.5px;background:var(--accent)}
.burger{display:none;background:none;border:0;cursor:pointer;padding:10px}
.burger span{width:24px;height:1.5px;background:var(--ink);display:block;margin:5px 0}
.btn{display:inline-flex;align-items:center;gap:12px;background:var(--ink);color:#fff;font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;padding:16px 26px;border:0;cursor:pointer;transition:background .2s,transform .1s;white-space:nowrap}
.btn:hover{background:var(--accent)}
.btn .k{color:var(--amber)}

/* ===== hero ===== */
.hero{padding:160px 0 80px}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero .kicker{margin-bottom:26px}
.hero h1{font-size:clamp(38px,6vw,78px);margin-bottom:26px}
.hero h1 .h1-top{display:block;font-size:clamp(18px,2.6vw,36px);font-weight:700;letter-spacing:-.01em;line-height:1.2;color:var(--muted);margin-bottom:8px}
.kin{display:block;position:relative;height:1.12em;overflow:hidden;color:var(--accent)}
.kin-w{position:absolute;inset:0;display:flex;align-items:center;white-space:nowrap;overflow:hidden}
.kin-w.now{animation:rollup .5s cubic-bezier(.2,.8,.2,1)}
@keyframes rollup{from{transform:translateY(102%)}to{transform:none}}
.hero .lead{font-size:18px;color:var(--muted);max-width:540px;margin-bottom:36px;font-weight:500}
.hero-cta{display:flex;gap:26px;align-items:center;flex-wrap:wrap;margin-bottom:60px}
.phone-link{font-family:var(--mono);font-size:13px;font-weight:600;border-bottom:1.5px solid var(--accent);padding-bottom:2px;transition:color .2s}
.phone-link:hover{color:var(--accent)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.stat{border-top:2px solid var(--ink);padding-top:12px}
.stat b{display:block;font-size:clamp(26px,2.6vw,38px);font-weight:800;letter-spacing:-.02em}
.stat b i{font-style:normal;color:var(--accent)}
.stat span{font-family:var(--mono);font-size:10.5px;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}

/* интерактивный атом */
.hero-visual{display:flex;align-items:center;justify-content:center}
.atom-frame{position:relative;width:min(480px,100%);aspect-ratio:1/1}
.atom-frame canvas{width:100%;height:100%;touch-action:pan-y;cursor:grab;display:block}
.atom-frame canvas:active{cursor:grabbing}
/* уголки-скобы чертежной рамки */
.atom-frame i{position:absolute;width:22px;height:22px;border:2px solid var(--accent);opacity:.7}
.atom-frame i:nth-child(1){top:0;left:0;border-right:0;border-bottom:0}
.atom-frame i:nth-child(2){top:0;right:0;border-left:0;border-bottom:0}
.atom-frame i:nth-child(3){bottom:0;left:0;border-right:0;border-top:0}
.atom-frame i:nth-child(4){bottom:0;right:0;border-left:0;border-top:0}
.atom-hint{position:absolute;bottom:-30px;left:50%;transform:translateX(-50%);font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);white-space:nowrap;transition:opacity .5s}

/* ===== marquee ===== */
.marquee{border-top:2px solid var(--ink);border-bottom:1px solid var(--line);padding:18px 0;overflow:hidden;background:rgba(255,255,255,.55);z-index:1}
.mq-track{display:flex;width:max-content;margin-inline:auto;animation:mq 40s linear infinite;font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ink)}
.mq-track span{flex:none;white-space:nowrap;padding:0 28px;display:inline-block}
.mq-track em{font-style:normal;color:var(--amber)}
.marquee:hover .mq-track{animation-play-state:paused}
@keyframes mq{to{transform:translateX(-50%)}}

/* ===== services ===== */
.sec-head{display:flex;align-items:baseline;gap:26px;border-top:2px solid var(--ink);padding-top:14px;margin-bottom:34px}
.sec-head .num{font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.16em;color:var(--accent)}
.sec-head h2{font-size:clamp(26px,3.6vw,42px)}
.sec-head .aside{margin-left:auto;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.row{display:grid;grid-template-columns:64px 1fr 26px;gap:24px;align-items:start;padding:24px 8px;border-top:1px solid var(--line);transition:background .2s,padding-left .2s}
.rows .row:last-child{border-bottom:1px solid var(--line)}
.row:hover{background:rgba(29,78,216,.05);padding-left:16px}
.row .idx{font-family:var(--mono);font-size:12px;font-weight:600;color:var(--accent);letter-spacing:.1em;padding-top:4px}
.row h3{font-size:20px;font-weight:700;letter-spacing:-.01em}
.row .more{grid-column:2/3;display:grid;grid-template-rows:0fr;transition:grid-template-rows .45s ease}
.row:hover .more,.row.open .more{grid-template-rows:1fr}
.row .more>div{overflow:hidden;color:var(--muted);font-size:15px;font-weight:500;padding-top:6px}
.row .arr{color:var(--accent);font-family:var(--mono);font-size:18px;opacity:0;transform:translateX(-6px);transition:.2s;padding-top:2px}
.row:hover .arr,.row.open .arr{opacity:1;transform:none}

/* ===== tech bento ===== */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.b{background:rgba(255,255,255,.85);border:1px solid var(--line);padding:24px 22px 20px;position:relative;overflow:hidden;transition:transform .25s,box-shadow .25s;cursor:default}
.b:hover{transform:translateY(-5px);box-shadow:0 16px 38px rgba(29,78,216,.14)}
.b.lg{grid-column:span 2}
.b .t{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px;gap:10px}
.b h3{font-size:17px;letter-spacing:-.01em}
.b .tag{font-family:var(--mono);font-size:10px;font-weight:600;color:var(--accent);letter-spacing:.1em;white-space:nowrap}
.b p{font-size:13.5px;color:var(--muted);font-weight:500}
.b .bar{position:absolute;left:0;bottom:0;height:3px;width:0;background:linear-gradient(90deg,var(--accent),var(--amber));transition:width .6s cubic-bezier(.2,.8,.2,1)}
.b:hover .bar,.b.on .bar{width:100%}

/* ===== process ===== */
.steps{display:grid;grid-template-columns:repeat(5,1fr);position:relative}
.steps::before{content:"";position:absolute;top:7px;left:4px;right:4px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform 1.4s ease}
.steps.on::before{transform:scaleX(1)}
.step{padding:0 18px 0 0;position:relative}
.step::before{content:"";position:absolute;top:2px;left:0;width:12px;height:12px;border:2px solid var(--accent);background:var(--paper);border-radius:50%;transform:scale(0);transition:transform .4s cubic-bezier(.3,1.6,.4,1)}
.steps.on .step::before{transform:scale(1)}
.steps.on .step:nth-child(2)::before{transition-delay:.25s}
.steps.on .step:nth-child(3)::before{transition-delay:.5s}
.steps.on .step:nth-child(4)::before{transition-delay:.75s}
.steps.on .step:nth-child(5)::before{transition-delay:1s}
.step .idx{font-family:var(--mono);font-size:10px;font-weight:600;color:var(--accent);letter-spacing:.18em;display:block;margin:26px 0 10px 20px;padding-left:0}
.step h3{font-size:16px;margin:26px 0 8px;padding-left:20px}
.step p{font-size:13.5px;color:var(--muted);font-weight:500;padding-left:20px}
.step:first-child{padding-left:0}

/* ===== effects ===== */
.effects{display:grid;grid-template-columns:repeat(3,1fr);gap:36px}
.effect{border-top:2px solid var(--ink);padding-top:16px}
.effect b{display:block;font-size:clamp(40px,5vw,62px);font-weight:800;letter-spacing:-.03em;margin-bottom:8px}
.effect b em{font-style:normal;color:var(--accent)}
.effect p{font-size:14.5px;color:var(--muted);font-weight:500;max-width:280px}

/* ===== CTA ===== */
.cta-box{border:1.5px solid var(--ink);background:rgba(255,255,255,.9);display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;padding:44px 52px;box-shadow:0 18px 46px rgba(14,23,38,.08)}
.cta-copy{flex:1 1 420px}
/* ===== modal ===== */
.modal{position:fixed;inset:0;z-index:80;display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;pointer-events:none;transition:opacity .25s}
.modal.open{opacity:1;pointer-events:auto}
.modal-bg{position:absolute;inset:0;background:rgba(14,23,38,.55)}
.modal-box{position:relative;background:var(--paper);border:1.5px solid var(--ink);width:min(460px,100%);padding:38px 36px;box-shadow:0 30px 80px rgba(14,23,38,.35);max-height:92vh;overflow:auto;transform:translateY(18px);transition:transform .25s}
.modal.open .modal-box{transform:none}
.modal-close{position:absolute;top:10px;right:12px;background:none;border:0;cursor:pointer;font:600 18px var(--mono);color:var(--muted);padding:8px;line-height:1}
.modal-close:hover{color:var(--accent)}
.modal-box h3{font-family:var(--sans);font-weight:800;font-size:24px;letter-spacing:-.02em;margin-bottom:20px}
.cta-copy h2{font-size:clamp(28px,3.4vw,42px);margin:16px 0 18px}
.cta-copy p{color:var(--muted);font-size:16px;font-weight:500}
.cta-copy .tag{font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
form{display:grid;gap:22px}
.field{position:relative}
.field label{display:block;font-family:var(--mono);font-size:10px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:4px;transition:color .2s}
.field:focus-within label{color:var(--accent)}
input,textarea{width:100%;padding:10px 2px;border:0;border-bottom:1.5px solid var(--ink);border-radius:0;background:transparent;color:var(--ink);font:600 16px var(--sans);outline:none;transition:border-color .2s}
input:focus,textarea:focus{border-color:var(--accent)}
textarea{resize:vertical;min-height:52px}
.form-note{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.form-ok{display:none;padding:18px;border:1.5px solid var(--accent);font-weight:700;font-size:15px;color:var(--accent)}

/* ===== заметки на полях (рукописные) ===== */
.notes{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.note{position:relative;background:rgba(255,255,255,.92);border:1.5px dashed var(--line);padding:28px 26px 22px;transform:rotate(-.8deg);transition:transform .25s,box-shadow .25s}
.note:nth-child(even){transform:rotate(.7deg)}
.note:hover{transform:rotate(0deg) translateY(-4px);box-shadow:0 16px 38px rgba(29,78,216,.14);z-index:2}
.note::before{content:"";position:absolute;top:-11px;left:50%;transform:translateX(-50%) rotate(-2deg);width:92px;height:22px;background:rgba(245,158,11,.3);box-shadow:inset 0 0 0 1px rgba(245,158,11,.55)}
.note h3{font-family:var(--hand);font-size:27px;font-weight:700;color:var(--accent);letter-spacing:0;margin-bottom:8px;line-height:1.1}
.note .given{font-family:var(--hand);font-size:18px;font-weight:500;color:var(--muted);margin-bottom:10px;line-height:1.35}
.note .f{font-family:var(--hand);font-size:21px;font-weight:600;line-height:1.5;letter-spacing:.01em}
.note .f b{color:var(--accent)}
.note .f .w{text-decoration:underline wavy rgba(29,78,216,.55);text-underline-offset:4px}
.note sub,.note sup{font-size:.6em}

/* ===== contacts ===== */
.contacts{display:grid;grid-template-columns:repeat(3,1fr)}
.contact{border-top:2px solid var(--ink);padding:16px 0 16px 22px;transition:transform .25s}
.contact:hover{transform:translateY(-3px)}
.contact+.contact{border-left:1px solid var(--line)}
.contact b{display:block;font-size:18px;margin-bottom:5px;letter-spacing:-.01em}
.contact a,.contact span{color:var(--muted);font-size:15px;font-weight:500}
.contact a:hover{color:var(--accent)}

/* ===== footer ===== */
footer{border-top:2px solid var(--ink);padding:36px 0;position:relative;z-index:1;background:rgba(244,246,249,.6)}
.foot{display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}
.foot .fname{font-weight:800;font-size:17px;letter-spacing:-.01em}
.foot .fname i{color:var(--amber);font-style:normal}
.foot .fmeta{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);text-align:right;line-height:1.7}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.on{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .kin-w.now{animation:none}
  .mq-track{animation:none}
  .steps::before{transform:scaleX(1)}
  .step::before{transform:scale(1)}
}

/* Средние ширины: полное название компании + меню + переключатель + кнопка
   не помещаются — оставляем только знак SES, чтобы ничего не переносилось. */
@media(max-width:1250px){
  .logo .name{display:none}
  .nav{gap:16px}
  .nav-links{gap:26px}
  .lang{margin-right:14px}
}

@media(max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:48px}
  .hero-visual{order:-1}
  .atom-frame{width:min(400px,86vw)}
  .bento{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr;row-gap:30px}
  .steps::before{display:none}
  .effects{grid-template-columns:1fr}
  .cta-box{padding:36px;flex-direction:column;align-items:flex-start}
  .contacts{grid-template-columns:1fr}
  .notes{grid-template-columns:1fr}
  .contact+.contact{border-left:0;border-top:1px solid var(--line)}
  .stats{grid-template-columns:1fr 1fr}
  .nav-links,.nav .btn{display:none}
  .lang{margin-right:8px}
  .burger{display:block}
  .nav-links.open{display:flex;position:fixed;top:68px;left:0;right:0;flex-direction:column;gap:0;background:var(--paper);border-bottom:2px solid var(--ink);padding:8px 28px 16px;z-index:49}
  .nav-links.open a{padding:14px 0;border-bottom:1px solid var(--line)}
}
@media(max-width:640px){
  section{padding:60px 0}
  .hero{padding:120px 0 50px}
  .steps{grid-template-columns:1fr}
  .cta-box{padding:30px}
}