/* ==========================================================================
   U2 AI Quantum — site.css  v2
   Brand navy (#0A1E38) + quantum gold (#DFBA24). Soft radii, living surfaces.
   Motion system: quantum field canvas (hero), annealing signature loop,
   cursor-tracked card glow, blur-reveal sections, drawn process line.
   ========================================================================== */

:root{
  --navy-950:#050E1C;
  --navy-900:#08172B;
  --navy-850:#0A1E38;   /* brand navy — from logo */
  --navy-800:#0E2745;
  --navy-750:#12304F;

  --line:rgba(255,255,255,.09);
  --line-mid:rgba(255,255,255,.14);
  --line-strong:rgba(255,255,255,.22);

  --gold:#DFBA24;        /* brand accent — from logo */
  --gold-bright:#F0D256;
  --gold-soft:#F6E27A;
  --gold-dim:rgba(223,186,36,.12);
  --gold-line:rgba(223,186,36,.40);

  --teal:#4FB3C4;

  --text:#E9EFF6;
  --text-mute:#93A6BD;
  --text-faint:#63788F;

  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;

  --container:1220px;
  --pad-x:24px;
  --radius:12px;        /* inputs, small chrome */
  --radius-lg:18px;     /* cards, tiles */
  --radius-xl:26px;     /* hero figure, modals */
  --nav-h:86px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--navy-950);color:var(--text);
  font-family:"Inter","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:17px;line-height:1.72;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg,canvas{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,figure,address{margin:0}
ul{padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
address{font-style:normal}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad-x)}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:-9999px;top:0;z-index:900;background:var(--gold);color:#0A1E38;
  padding:12px 22px;font-weight:700;border-radius:999px}
.skip-link:focus{left:12px;top:12px}

/* scroll progress: a thin energy line riding the top edge */
.progress{position:fixed;top:0;left:0;right:0;height:2.5px;z-index:600;pointer-events:none;
  background:linear-gradient(90deg,var(--gold),var(--gold-soft) 60%,var(--teal));
  transform-origin:0 50%;transform:scaleX(0)}

/* ------------------------------- shared bits ----------------------------- */
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--gold);display:flex;align-items:center;gap:12px;margin-bottom:20px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--gold-line);flex:0 0 auto}

.section{padding:108px 0;position:relative}
.section--tight{padding:80px 0}
.section--alt{background:var(--navy-900);border-block:1px solid var(--line)}

.section__head{max-width:760px;margin-bottom:54px}
.section__head h2{font-size:clamp(28px,3.6vw,42px);font-weight:800;letter-spacing:-.025em;
  line-height:1.18;color:#fff;margin-bottom:16px}
.section__head p{color:var(--text-mute);font-size:17px}

.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 30px;border-radius:999px;font-size:14px;font-weight:700;
  letter-spacing:.02em;border:1px solid transparent;overflow:hidden;
  transition:transform .25s cubic-bezier(.22,.61,.36,1),box-shadow .25s ease,
             background .25s ease,border-color .25s ease,color .25s ease}
.btn::after{content:"";position:absolute;inset:0;border-radius:inherit;
  background:linear-gradient(105deg,transparent 38%,rgba(255,255,255,.34) 50%,transparent 62%);
  transform:translateX(-130%);transition:transform .01s}
.btn:hover::after{transform:translateX(130%);transition:transform .7s ease}
.btn--gold{background:var(--gold);color:#08172B;border-color:var(--gold)}
.btn--gold:hover{background:var(--gold-bright);border-color:var(--gold-bright);
  transform:translateY(-2px);box-shadow:0 10px 34px -8px rgba(223,186,36,.45)}
.btn--ghost{border-color:var(--line-strong);color:var(--text)}
.btn--ghost:hover{border-color:var(--gold);color:#fff;background:var(--gold-dim);transform:translateY(-2px)}

/* ---------------------------------- nav ---------------------------------- */
.nav{position:sticky;top:0;z-index:300;background:rgba(5,14,28,.80);
  backdrop-filter:saturate(140%) blur(16px);border-bottom:1px solid transparent;transition:.25s ease}
.nav.is-stuck{background:rgba(5,14,28,.95);border-bottom-color:var(--line)}
.nav__inner{max-width:var(--container);margin:0 auto;padding:0 var(--pad-x);height:var(--nav-h);
  display:flex;align-items:center;gap:26px}
.nav__logo img{height:52px;width:auto;transition:transform .3s ease}
.nav__logo:hover img{transform:scale(1.03)}
.nav__menu{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav__link{position:relative;font-size:13.5px;font-weight:600;color:var(--text-mute);
  transition:color .2s ease;white-space:nowrap;padding:6px 0}
.nav__link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--gold),var(--gold-soft));
  transform:scaleX(0);transform-origin:0 50%;transition:transform .3s cubic-bezier(.22,.61,.36,1)}
.nav__link:hover,.nav__link.is-active{color:#fff}
.nav__link:hover::after,.nav__link.is-active::after{transform:scaleX(1)}
.nav__burger{display:none;width:44px;height:44px;border:1px solid var(--line-mid);border-radius:12px;
  margin-left:auto;position:relative}
.nav__burger span{position:absolute;left:12px;right:12px;top:50%;height:1.5px;background:var(--text)}
.nav__burger span::before,.nav__burger span::after{content:"";position:absolute;left:0;right:0;
  height:1.5px;background:var(--text)}
.nav__burger span::before{top:-7px}.nav__burger span::after{top:7px}

.lang{display:flex;align-items:center;gap:2px;flex:0 0 auto;padding:3px;
  border:1px solid var(--line-mid);border-radius:999px;overflow:hidden}
.lang a{font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.1em;
  padding:6px 12px;border-radius:999px;color:var(--text-faint);transition:.2s ease}
.lang a:hover{color:#fff}
.lang a.is-active{background:var(--gold-dim);color:var(--gold)}

/* --------------------------------- hero ---------------------------------- */
.hero{position:relative;min-height:calc(100vh - var(--nav-h));display:flex;align-items:center;
  padding:88px 0 96px;overflow:hidden;
  background:
    radial-gradient(1100px 620px at 78% 8%,rgba(223,186,36,.10),transparent 62%),
    radial-gradient(900px 560px at 12% 96%,rgba(79,179,196,.09),transparent 60%),
    var(--navy-950);
}
.hero__grid{position:absolute;inset:0;pointer-events:none;opacity:.32;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),
                   linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:78px 78px;
  mask-image:radial-gradient(120% 90% at 50% 0%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 20%,transparent 78%)}
.hero__field{position:absolute;inset:0;pointer-events:none}
.hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:1.02fr .98fr;
  gap:64px;align-items:center;width:100%}
.hero h1{font-size:clamp(36px,5.6vw,62px);font-weight:800;line-height:1.06;letter-spacing:-.035em;
  color:#fff;margin-bottom:24px}
.hero h1 em{font-style:normal;color:var(--gold);
  background:linear-gradient(100deg,var(--gold) 20%,var(--gold-soft) 38%,#fff8 50%,var(--gold-soft) 62%,var(--gold) 80%);
  background-size:220% 100%;-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;animation:shimmer 7s ease-in-out infinite}
@keyframes shimmer{0%,100%{background-position:110% 0}45%,55%{background-position:-10% 0}}
.hero__lead{font-size:clamp(16.5px,1.6vw,19px);color:var(--text-mute);max-width:600px;margin-bottom:34px}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero__meta{display:flex;flex-wrap:wrap;gap:12px 30px;font-family:var(--mono);font-size:11px;
  letter-spacing:.15em;text-transform:uppercase;color:var(--text-faint)}
.hero__meta span{display:flex;align-items:center;gap:9px}
.hero__meta span::before{content:"";width:5px;height:5px;background:var(--gold);border-radius:50%;flex:0 0 auto;
  box-shadow:0 0 8px rgba(223,186,36,.8)}

/* signature element: energy landscape / annealing */
.anneal{position:relative;border:1px solid var(--line);border-radius:var(--radius-xl);
  background:linear-gradient(180deg,rgba(10,30,56,.72),rgba(5,14,28,.55));padding:24px;
  box-shadow:0 30px 80px -40px rgba(0,0,0,.8),inset 0 1px 0 rgba(255,255,255,.05)}
.anneal::before{content:"";position:absolute;inset:-1px;border-radius:inherit;pointer-events:none;
  background:radial-gradient(420px 200px at 78% 100%,rgba(223,186,36,.12),transparent 70%);opacity:.8}
.anneal__label{display:flex;justify-content:space-between;align-items:baseline;gap:16px;
  font-family:var(--mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--text-faint);margin-bottom:14px}
.anneal__label b{color:var(--gold);font-weight:600;white-space:nowrap}
.anneal__stage{position:relative;width:100%;aspect-ratio:16/11}
.anneal__stage svg{position:absolute;inset:0;width:100%;height:100%}
.anneal__note{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--text-faint);margin-top:14px;text-align:center}
.anneal .curve{fill:none;stroke:var(--line-strong);stroke-width:1.4}
.anneal .curve-glow{fill:none;stroke:var(--gold);stroke-width:1.4;opacity:.30;
  stroke-dasharray:640;stroke-dashoffset:640;animation:draw 3.4s ease forwards .3s}
.anneal .basin{fill:url(#basinFill);opacity:.5}
.anneal .minima{fill:var(--text-faint)}
.anneal .global-min{fill:var(--gold)}
.anneal .particle{fill:var(--gold);filter:drop-shadow(0 0 7px rgba(223,186,36,.85))}
.anneal .trail{fill:var(--gold);pointer-events:none}
.anneal .halo{fill:none;stroke:var(--gold);stroke-width:1;opacity:0}
.anneal .axis{stroke:var(--line);stroke-width:1}
.anneal .axis-label{font-family:var(--mono);font-size:8px;letter-spacing:.16em;fill:var(--text-faint);
  text-transform:uppercase}
@keyframes draw{to{stroke-dashoffset:0}}

/* ------------------------------ principles ------------------------------- */
.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.principle{position:relative;background:linear-gradient(180deg,rgba(14,39,69,.35),rgba(5,14,28,.2));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:38px 32px;
  transition:border-color .3s ease,transform .3s ease}
.principle:hover{border-color:var(--gold-line);transform:translateY(-3px)}
.principle__n{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--gold);margin-bottom:16px}
.principle h3{font-size:19px;font-weight:700;color:#fff;margin-bottom:11px;letter-spacing:-.01em}
.principle p{font-size:15px;color:var(--text-mute)}

/* ------------------------- glow-border (cursor) --------------------------- */
.glow{position:relative}
.glow::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(340px circle at var(--mx,50%) var(--my,0%),rgba(223,186,36,.09),transparent 65%);
  opacity:0;transition:opacity .35s ease}
.glow::after{content:"";position:absolute;inset:-1px;border-radius:inherit;pointer-events:none;padding:1px;
  background:radial-gradient(260px circle at var(--mx,50%) var(--my,0%),rgba(223,186,36,.65),rgba(79,179,196,.25) 55%,transparent 75%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  mask-composite:exclude;opacity:0;transition:opacity .35s ease}
.glow:hover::before,.glow:hover::after{opacity:1}

/* -------------------------------- services -------------------------------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px 30px;
  background:linear-gradient(180deg,rgba(14,39,69,.42),rgba(5,14,28,.2));
  display:flex;flex-direction:column;
  transition:transform .35s cubic-bezier(.22,.61,.36,1),border-color .35s ease,box-shadow .35s ease}
.card:hover{border-color:var(--gold-line);transform:translateY(-5px);
  box-shadow:0 24px 50px -28px rgba(0,0,0,.75)}
.card__ico{width:40px;height:40px;margin-bottom:20px;color:var(--gold);
  transition:transform .4s cubic-bezier(.34,1.56,.64,1)}
.card:hover .card__ico{transform:translateY(-3px) scale(1.08)}
.card__ico svg{width:100%;height:100%;stroke:currentColor;fill:none;stroke-width:1.4}
.card h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:12px;letter-spacing:-.01em;line-height:1.32}
.card p{font-size:14.6px;color:var(--text-mute);flex:1}
.tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:20px}
.tag{font-family:var(--mono);font-size:9.5px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--text-faint);border:1px solid var(--line-mid);border-radius:999px;padding:4px 11px;
  transition:.25s ease}
.card:hover .tag{border-color:rgba(223,186,36,.28);color:var(--text-mute)}

/* ------------------------------- use cases -------------------------------- */
.usecases{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.usecase{background:var(--navy-900);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 28px;display:flex;gap:18px;align-items:flex-start;
  transition:border-color .3s ease,transform .3s ease,background .3s ease}
.usecase:hover{border-color:var(--gold-line);transform:translateX(4px);background:var(--navy-850)}
.usecase__k{font-family:var(--mono);font-size:11px;color:var(--gold);letter-spacing:.14em;
  padding-top:3px;flex:0 0 auto}
.usecase h3{font-size:16px;font-weight:700;color:#fff;margin-bottom:5px}
.usecase p{font-size:14px;color:var(--text-mute)}

/* -------------------------------- process --------------------------------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative;padding-top:26px}
.steps::before{content:"";position:absolute;top:0;left:8px;right:8px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--gold),var(--gold-soft) 55%,var(--teal));
  transform:scaleX(0);transform-origin:0 50%;transition:transform 1.4s cubic-bezier(.22,.61,.36,1) .2s}
.steps.is-in::before{transform:scaleX(1)}
.step{border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 26px;background:rgba(10,30,56,.35);position:relative;
  transition:border-color .3s ease,transform .3s ease}
.step::before{content:"";position:absolute;top:-31px;left:24px;width:9px;height:9px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 10px rgba(223,186,36,.8)}
.step:hover{border-color:var(--gold-line);transform:translateY(-4px)}
.step__n{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--gold);margin-bottom:14px}
.step h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:6px}
.step__dur{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--text-faint);margin-bottom:12px}
.step p{font-size:14.4px;color:var(--text-mute)}
.steps__note{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--text-faint);margin-top:22px}

/* ------------------------------- split media ------------------------------ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.split h2{font-size:clamp(26px,3.2vw,36px);font-weight:800;letter-spacing:-.025em;color:#fff;
  margin-bottom:18px;line-height:1.2}
.split p{color:var(--text-mute);font-size:16px;margin-bottom:14px}
.reasons{display:grid;gap:14px}
.reason{background:var(--navy-950);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px 26px;transition:border-color .3s ease,transform .3s ease}
.reason:hover{border-color:var(--gold-line);transform:translateX(4px)}
.reason h3{font-size:16px;font-weight:700;color:#fff;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.reason h3::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);flex:0 0 auto;
  box-shadow:0 0 8px rgba(223,186,36,.7)}
.reason p{font-size:14.2px;color:var(--text-mute);margin:0;padding-left:16px}

/* ---------------------------------- faq ----------------------------------- */
.faq{display:grid;gap:14px;max-width:900px}
.faq__item{background:var(--navy-950);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;transition:border-color .3s ease}
.faq__item:hover{border-color:var(--line-strong)}
.faq__item.is-open{border-color:var(--gold-line)}
.faq__q{width:100%;text-align:left;padding:22px 26px;font-size:16px;font-weight:600;color:#fff;
  display:flex;justify-content:space-between;align-items:center;gap:20px;transition:.2s ease}
.faq__q:hover{background:rgba(223,186,36,.05)}
.faq__q::after{content:"+";font-family:var(--mono);font-size:20px;color:var(--gold);flex:0 0 auto;
  transition:transform .3s cubic-bezier(.22,.61,.36,1)}
.faq__item.is-open .faq__q::after{transform:rotate(45deg)}
.faq__a{max-height:0;opacity:0;overflow:hidden;padding:0 26px;
  transition:max-height .45s cubic-bezier(.22,.61,.36,1),opacity .35s ease,padding .3s ease}
.faq__a p{font-size:14.8px;color:var(--text-mute);max-width:74ch}
.faq__item.is-open .faq__a{max-height:340px;opacity:1;padding:0 26px 24px}

/* --------------------------------- contact -------------------------------- */
.contact{display:grid;grid-template-columns:.92fr 1.08fr;gap:60px;align-items:start}
.form{display:grid;gap:16px}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field label{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--text-faint);margin-bottom:8px}
.field label .req{color:var(--gold)}
.field input,.field select,.field textarea{width:100%;background:rgba(5,14,28,.7);
  border:1px solid var(--line-mid);border-radius:var(--radius);padding:13px 17px;
  color:var(--text);font-size:15px;font-family:inherit;transition:.25s ease}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--gold);outline:none;
  background:rgba(10,30,56,.75);box-shadow:0 0 0 4px rgba(223,186,36,.10)}
.field textarea{min-height:120px;resize:vertical}
.field select{appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--text-faint) 50%),
                   linear-gradient(135deg,var(--text-faint) 50%,transparent 50%);
  background-position:calc(100% - 22px) 21px,calc(100% - 17px) 21px;
  background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.consent{display:flex;gap:12px;align-items:flex-start;font-size:13.4px;color:var(--text-mute);line-height:1.6}
.consent input{width:17px;height:17px;flex:0 0 auto;margin-top:2px;accent-color:var(--gold)}
.consent button{color:var(--gold);text-decoration:underline;font-size:inherit}
.form__msg{font-size:14px;padding:13px 18px;border-radius:var(--radius);display:none}
.form__msg.is-ok{display:block;border:1px solid var(--gold-line);background:var(--gold-dim);color:var(--gold-bright)}
.form__msg.is-err{display:block;border:1px solid rgba(220,80,80,.5);background:rgba(220,80,80,.1);color:#F09B9B}
.hp{position:absolute;left:-9999px;opacity:0;height:0;width:0}

.contact__aside h2{font-size:clamp(26px,3.2vw,38px);font-weight:800;letter-spacing:-.025em;
  color:#fff;margin-bottom:18px;line-height:1.2}
.contact__aside p{color:var(--text-mute);margin-bottom:26px}
.contact__facts{display:grid;gap:12px}
.contact__fact{background:var(--navy-900);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:18px 22px;transition:border-color .3s ease}
.contact__fact:hover{border-color:var(--gold-line)}
.contact__fact dt{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--text-faint);margin-bottom:5px}
.contact__fact dd{margin:0;font-size:15px;color:var(--text)}
.contact__fact dd a:hover{color:var(--gold)}

/* --------------------------------- footer --------------------------------- */
.footer{background:var(--navy-900);border-top:1px solid var(--line);padding:76px 0 30px}
.footer__top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:48px;
  padding-bottom:48px;border-bottom:1px solid var(--line)}
.footer__logo{height:62px;width:auto;margin-bottom:20px}
.footer__desc{font-size:14.4px;color:var(--text-mute);max-width:38ch;margin-bottom:14px}
.footer__parent{font-size:13.6px;color:var(--text-faint)}
.footer__parent strong{color:var(--text-mute);font-weight:600}
.footer__parent a{color:var(--gold)}
.footer__top h2{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--text-faint);margin-bottom:18px}
.footer__top ul{display:grid;gap:10px}
.footer__top ul a{font-size:14.4px;color:var(--text-mute);transition:color .2s ease,padding-left .25s ease}
.footer__top ul a:hover{color:var(--gold);padding-left:6px}
.footer__top address{font-size:14.2px;color:var(--text-mute);line-height:1.9}
.footer__top address a:hover{color:var(--gold)}
.footer__offices{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--text-faint);padding:22px 0;border-bottom:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 26px;align-items:center}
.footer__offices b{color:var(--text-mute);font-weight:600}
.footer__bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;
  gap:16px;padding-top:26px;font-size:13.4px;color:var(--text-faint)}
.footer__legal{display:flex;flex-wrap:wrap;gap:22px}
.footer__legal button{font-size:13.4px;color:var(--text-faint);transition:color .2s ease}
.footer__legal button:hover{color:var(--gold)}

/* --------------------------------- modals --------------------------------- */
.modal{position:fixed;inset:0;z-index:400;display:none;place-items:center;padding:24px}
.modal.is-open{display:grid}
.modal__backdrop{position:absolute;inset:0;background:rgba(3,8,16,.84);backdrop-filter:blur(4px)}
.modal__panel{position:relative;z-index:2;width:min(860px,100%);max-height:86vh;overflow:auto;
  background:var(--navy-900);border:1px solid var(--line-mid);border-radius:var(--radius-xl);
  padding:46px 48px;animation:modalIn .35s cubic-bezier(.22,.61,.36,1)}
@keyframes modalIn{from{opacity:0;transform:translateY(18px) scale(.985)}to{opacity:1;transform:none}}
.modal__close{position:absolute;top:16px;right:16px;width:42px;height:42px;border:1px solid var(--line-mid);
  border-radius:50%;color:var(--text-mute);font-size:22px;line-height:1;transition:.25s ease}
.modal__close:hover{border-color:var(--gold);color:#fff;background:var(--gold-dim);transform:rotate(90deg)}
.modal__panel h3{font-size:26px;font-weight:800;color:#fff;letter-spacing:-.02em;margin-bottom:6px}
.modal__meta{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--text-faint);margin-bottom:26px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.modal__panel h4{font-size:15px;font-weight:700;color:var(--gold-bright);margin:26px 0 9px}
.modal__panel p{font-size:14.5px;color:var(--text-mute);line-height:1.75;margin-bottom:12px}
.modal__panel ul{margin:0 0 12px;display:grid;gap:8px}
.modal__panel ul li{font-size:14px;color:var(--text-mute);padding-left:18px;position:relative;line-height:1.6}
.modal__panel ul li::before{content:"";position:absolute;left:0;top:.66em;width:7px;height:1px;background:var(--gold)}
.modal__panel a{color:var(--gold-bright)}
body.is-locked{overflow:hidden}

/* -------------------------------- reveal ---------------------------------- */
[data-reveal]{opacity:0;transform:translateY(30px) scale(.985);filter:blur(7px);
  transition:opacity .8s cubic-bezier(.22,.61,.36,1),transform .8s cubic-bezier(.22,.61,.36,1),
             filter .8s cubic-bezier(.22,.61,.36,1)}
[data-reveal].is-in{opacity:1;transform:none;filter:blur(0)}
[data-reveal-stagger]>*{opacity:0;transform:translateY(26px) scale(.985);filter:blur(6px);
  transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1),
             filter .7s cubic-bezier(.22,.61,.36,1)}
[data-reveal-stagger].is-in>*{opacity:1;transform:none;filter:blur(0)}
[data-reveal-stagger].is-in>*:nth-child(1){transition-delay:.05s}
[data-reveal-stagger].is-in>*:nth-child(2){transition-delay:.13s}
[data-reveal-stagger].is-in>*:nth-child(3){transition-delay:.21s}
[data-reveal-stagger].is-in>*:nth-child(4){transition-delay:.29s}
[data-reveal-stagger].is-in>*:nth-child(5){transition-delay:.37s}
[data-reveal-stagger].is-in>*:nth-child(6){transition-delay:.45s}

/* ------------------------------- responsive ------------------------------- */
@media (max-width:1080px){
  .hero__inner{grid-template-columns:1fr;gap:52px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);padding-top:0}
  .steps::before,.step::before{display:none}
  .split,.contact{grid-template-columns:1fr;gap:44px}
  .footer__top{grid-template-columns:1fr 1fr;gap:38px}
}
@media (max-width:820px){
  body{font-size:16px}
  .section{padding:78px 0}
  .nav__logo img{height:44px}
  .nav__burger{display:block;margin-left:12px;order:2}
  .nav__menu{position:fixed;inset:var(--nav-h) 0 auto;flex-direction:column;align-items:stretch;
    gap:0;background:var(--navy-900);border-bottom:1px solid var(--line);padding:8px 0;
    display:none;max-height:calc(100vh - var(--nav-h));overflow:auto}
  .nav__menu.is-open{display:flex}
  .nav__menu li{border-bottom:1px solid var(--line)}
  .nav__link{display:block;padding:15px var(--pad-x);font-size:15px}
  .nav__link::after{display:none}
  .nav__cta-wrap{display:none}
  .lang{margin-left:auto}
  .principles,.usecases{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .form__row{grid-template-columns:1fr}
  .footer__top{grid-template-columns:1fr;gap:34px}
  .modal__panel{padding:40px 26px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:460px){
  .hero__cta{flex-direction:column;align-items:stretch}
  .btn{width:100%}
  .footer__legal{gap:16px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important}
  [data-reveal],[data-reveal-stagger]>*{opacity:1 !important;transform:none !important;filter:none !important}
  .anneal .curve-glow{stroke-dashoffset:0}
  .hero h1 em{background:none;-webkit-text-fill-color:var(--gold);color:var(--gold)}
  .steps.is-in::before{transform:scaleX(1)}
  .hero__field{display:none}
}