/* Техно-ИИ — дизайн-система
   Палитра: глубокий графит + электрический индиго + тёплый песочный акцент.
   Всё в одном файле, без внешних зависимостей: скорость и предсказуемость. */

:root{
  --bg:#08090d;
  --bg2:#0d0f16;
  --panel:#11141d;
  --line:rgba(255,255,255,.09);
  --text:#eef1f7;
  --muted:#98a0b3;
  --indigo:#5b6cff;
  --indigo-2:#8a5bff;
  --cyan:#38e8d0;
  --sand:#ffcf8b;
  --radius:18px;
  --max:1180px;
  --ease:cubic-bezier(.22,1,.36,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font:400 16px/1.6 "Inter","Segoe UI",Roboto,-apple-system,system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(900px 500px at 78% -10%, rgba(91,108,255,.18), transparent 60%),
    radial-gradient(700px 420px at 8% 8%, rgba(56,232,208,.10), transparent 60%),
    radial-gradient(800px 600px at 50% 110%, rgba(138,91,255,.14), transparent 60%);
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px;position:relative;z-index:1}

/* ── прогресс чтения ─────────────────────────────── */
#read-progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:99;
  background:linear-gradient(90deg,var(--cyan),var(--indigo),var(--indigo-2));
  box-shadow:0 0 14px rgba(91,108,255,.7);
}

/* ── шапка ───────────────────────────────────────── */
header.site{
  position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);
  background:rgba(8,9,13,.62);border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),background .3s var(--ease);
}
header.site.scrolled{border-bottom-color:var(--line);background:rgba(8,9,13,.9)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.2px;font-size:17px;white-space:nowrap;flex:0 0 auto}
.brand .mark{
  width:32px;height:32px;border-radius:9px;position:relative;flex:0 0 auto;
  background:conic-gradient(from 210deg,var(--indigo),var(--cyan),var(--indigo-2),var(--indigo));
  animation:spin 14s linear infinite;
}
.brand .mark::after{
  content:"ТИ";position:absolute;inset:2px;border-radius:7px;background:#0a0b11;
  display:grid;place-items:center;font-size:11px;font-weight:800;letter-spacing:.5px;color:#dfe4ff;
}
@keyframes spin{to{transform:rotate(360deg)}}
.nav-links{display:flex;gap:26px;font-size:14.5px;color:var(--muted)}
.nav-links a{position:relative;transition:color .2s}
.nav-links a::after{
  content:"";position:absolute;left:0;right:100%;bottom:-6px;height:1px;
  background:linear-gradient(90deg,var(--cyan),var(--indigo));transition:right .3s var(--ease);
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{right:0}
.btn{
  display:inline-flex;align-items:center;gap:9px;border-radius:12px;padding:12px 20px;
  font-weight:600;font-size:14.5px;border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .3s var(--ease),background .2s;
  font-family:inherit;
}
.btn-primary{
  background:linear-gradient(120deg,var(--indigo),var(--indigo-2));color:#fff;
  box-shadow:0 10px 30px -10px rgba(91,108,255,.8);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -12px rgba(91,108,255,.95)}
.btn-ghost{border-color:var(--line);background:rgba(255,255,255,.03);color:var(--text)}
.btn-ghost:hover{background:rgba(255,255,255,.07);transform:translateY(-2px)}

/* ── hero ────────────────────────────────────────── */
.hero{position:relative;padding:86px 0 40px;overflow:hidden}
#neural{position:absolute;inset:0;width:100%;height:100%;opacity:.55;z-index:0}
.hero .wrap{z-index:2}
.kicker{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;padding:7px 14px;background:rgba(255,255,255,.03);
}
.kicker .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan);
  animation:pulse 2.2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.8)}}
h1.hero-title{
  font-size:clamp(34px,6.4vw,72px);line-height:1.03;letter-spacing:-2px;
  margin:26px 0 0;font-weight:800;
}
h1.hero-title .grad{
  background:linear-gradient(96deg,var(--cyan) 0%,var(--indigo) 45%,var(--indigo-2) 78%,var(--sand) 100%);
  background-size:220% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:shift 9s ease-in-out infinite;
}
@keyframes shift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
.lead{margin:22px 0 0;max-width:640px;font-size:clamp(15.5px,2.1vw,19px);color:#c3cad9}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
.hero-meta{display:flex;gap:26px;flex-wrap:wrap;margin-top:36px;font-size:13.5px;color:var(--muted)}
.hero-meta b{color:var(--text);font-size:19px;display:block;letter-spacing:-.5px}

/* появление элементов */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}

/* ── секции ──────────────────────────────────────── */
section{padding:78px 0;position:relative;z-index:1}
.sec-head{max-width:680px;margin-bottom:44px}
.sec-tag{font-size:12.5px;letter-spacing:2.4px;text-transform:uppercase;color:var(--indigo);font-weight:700}
h2{font-size:clamp(26px,3.8vw,42px);line-height:1.12;letter-spacing:-1.2px;margin:12px 0 0;font-weight:800}
.sec-head p{color:var(--muted);margin:14px 0 0;font-size:16px}

/* ── услуги ──────────────────────────────────────── */
.grid{display:grid;gap:18px}
.svc{grid-template-columns:repeat(auto-fit,minmax(290px,1fr))}
.card{
  position:relative;background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;
  transition:transform .28s var(--ease),border-color .3s,box-shadow .3s;
  transform-style:preserve-3d;will-change:transform;overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(360px 220px at var(--mx,50%) var(--my,0%),rgba(91,108,255,.20),transparent 70%);
  opacity:0;transition:opacity .3s;
}
.card:hover{border-color:rgba(91,108,255,.5);box-shadow:0 22px 50px -24px rgba(91,108,255,.7)}
.card:hover::before{opacity:1}
.card .ico{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
  background:rgba(91,108,255,.14);border:1px solid rgba(91,108,255,.3);color:#c9d0ff;
}
.card h3{margin:0 0 8px;font-size:18.5px;letter-spacing:-.3px}
.card p{margin:0;color:var(--muted);font-size:14.5px}
.card .tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.tag{font-size:11.5px;color:#b9c1d6;border:1px solid var(--line);border-radius:999px;padding:4px 10px;background:rgba(255,255,255,.03)}

/* ── процесс ─────────────────────────────────────── */
.steps{counter-reset:s;display:grid;gap:14px}
.step{
  display:grid;grid-template-columns:56px 1fr;gap:18px;align-items:start;
  border:1px solid var(--line);border-radius:14px;padding:18px 20px;background:rgba(255,255,255,.022);
  transition:border-color .3s,background .3s,transform .3s var(--ease);
}
.step:hover{border-color:rgba(56,232,208,.45);background:rgba(56,232,208,.05);transform:translateX(4px)}
.step .n{
  counter-increment:s;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  font-weight:800;color:#0a0b11;background:linear-gradient(140deg,var(--cyan),var(--indigo));
}
.step .n::before{content:counter(s,decimal-leading-zero)}
.step h4{margin:0 0 4px;font-size:16.5px}
.step p{margin:0;color:var(--muted);font-size:14.5px}

/* ── цифры ───────────────────────────────────────── */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px}
.stat{border:1px solid var(--line);border-radius:14px;padding:22px;background:rgba(255,255,255,.022);text-align:center}
.stat .v{font-size:clamp(28px,4vw,40px);font-weight:800;letter-spacing:-1.5px;
  background:linear-gradient(120deg,#fff,#a9b4ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .k{color:var(--muted);font-size:13.5px;margin-top:6px}

/* ── работы ──────────────────────────────────────── */
.works{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.work{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--panel);
  transition:transform .3s var(--ease),border-color .3s}
.work:hover{transform:translateY(-5px);border-color:rgba(91,108,255,.45)}
.work .shot{height:150px;position:relative;display:grid;place-items:center;overflow:hidden;
  background:linear-gradient(140deg,#141a2b,#0b0e16);border-bottom:1px solid var(--line)}
.work .shot span{font-size:13px;color:#8f9ab5;letter-spacing:.4px}
.work .shot::after{
  content:"";position:absolute;inset:-40%;
  background:conic-gradient(from 0deg,transparent,rgba(91,108,255,.28),transparent 40%);
  animation:spin 9s linear infinite;
}
.work .body{padding:18px 20px}
.work h3{margin:0 0 6px;font-size:17px}
.work p{margin:0;color:var(--muted);font-size:14px}
.work .meta{margin-top:12px;font-size:12.5px;color:#9aa4bd;display:flex;gap:10px;flex-wrap:wrap}

/* ── стек ────────────────────────────────────────── */
.marquee{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:16px 0;mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee .row{display:flex;gap:44px;white-space:nowrap;width:max-content;
  animation:slide 26s linear infinite;font-size:14.5px;color:#a7b0c6;letter-spacing:.3px}
.marquee:hover .row{animation-play-state:paused}
@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ── форма ───────────────────────────────────────── */
.contact{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:start}
.form-card{border:1px solid var(--line);border-radius:var(--radius);padding:26px;background:rgba(255,255,255,.03)}
label.f{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}
input[type=text],input[type=tel],input[type=email],textarea{
  width:100%;background:#0a0c12;border:1px solid var(--line);border-radius:11px;color:var(--text);
  padding:12px 14px;font:inherit;font-size:15px;transition:border-color .2s,box-shadow .2s;
}
input:focus,textarea:focus{outline:none;border-color:rgba(91,108,255,.7);box-shadow:0 0 0 4px rgba(91,108,255,.14)}
textarea{min-height:96px;resize:vertical}
.consent{display:flex;gap:9px;align-items:flex-start;margin-top:16px;font-size:12.5px;color:var(--muted);line-height:1.5}
.consent input{margin-top:3px;accent-color:var(--indigo);flex:0 0 auto}
.consent a{color:#a9b4ff;text-decoration:underline}
.form-note{font-size:12px;color:#7c869b;margin-top:12px}
.form-ok{display:none;margin-top:14px;padding:12px 14px;border-radius:11px;font-size:14px;
  background:rgba(56,232,208,.1);border:1px solid rgba(56,232,208,.4);color:#b8f7ee}

/* ── подвал ──────────────────────────────────────── */
footer.site{border-top:1px solid var(--line);padding:44px 0 30px;color:var(--muted);font-size:13.5px}
.foot{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}
footer.site a:hover{color:var(--text)}
.foot .req{margin-top:10px;line-height:1.7;font-size:12.5px;color:#7c869b}

/* ── окно согласия ───────────────────────────────── */
#cc-banner{
  position:fixed;left:12px;right:12px;bottom:12px;z-index:9999;display:none;max-width:640px;margin:0 auto;
  background:#12151e;border:1px solid var(--line);border-radius:14px;padding:14px 16px;
  box-shadow:0 18px 50px -20px #000;font-size:12px;line-height:1.5;color:#c8cfdd;
}
#cc-banner .add{font-size:11.5px;opacity:.8}
#cc-banner a{color:#a9b4ff;text-decoration:underline}
#cc-banner .cj-wrap{margin-top:10px;display:flex;gap:8px;flex-wrap:wrap}

/* ── адаптив ─────────────────────────────────────── */
@media (max-width:900px){
  .contact{grid-template-columns:1fr}
  .nav-links{display:none}
}
@media (max-width:640px){
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-meta{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
}
@media (max-width:560px){
  .hero{padding-top:56px}
  section{padding:56px 0}
  .step{grid-template-columns:44px 1fr;gap:12px}
  .wrap{padding:0 18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}