/* ============================================================
   Nxterion — Brand stylesheet
   AI Consulting · Workflow Automation · AI Solutions
   ============================================================ */

:root{
  /* Brand tokens (from Nxterion Color Guide v1.0) */
  --nx-teal:#0D4F4A;
  --nx-teal-700:#0A3E3A;
  --nx-teal-300:#1A7A72;
  --nx-ink:#0A1418;
  --nx-cyan:#36E0D0;
  --nx-lime:#7DF9A6;
  --nx-cloud:#F7F9F8;
  --nx-mist:#D9E2DF;
  --nx-grey:#6B7572;
  --nx-white:#FFFFFF;

  /* Derived */
  --nx-ink-soft:#0F2027;
  --nx-line:#D9E2DF;
  --nx-line-dark:rgba(54,224,208,.16);
  --nx-grey-dark:#8FA09C;

  /* Type */
  --font-display:'Space Grotesk',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --font-body:'IBM Plex Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --font-mono:'IBM Plex Mono','SF Mono',Consolas,monospace;

  /* Rhythm */
  --maxw:1200px;
  --gut:clamp(20px,5vw,48px);
  --radius:14px;
  --radius-sm:9px;
  --shadow-sm:0 1px 2px rgba(10,20,24,.04),0 2px 8px rgba(10,20,24,.04);
  --shadow-md:0 4px 12px rgba(10,20,24,.06),0 12px 32px rgba(10,20,24,.07);
  --shadow-lg:0 24px 60px rgba(10,20,24,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  font-family:var(--font-body);
  background:var(--nx-cloud);
  color:var(--nx-ink);
  line-height:1.6;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--nx-teal-300);text-decoration:none;}
a:hover{color:var(--nx-teal);}
::selection{background:var(--nx-cyan);color:var(--nx-ink);}

/* ---------- Layout helpers ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gut);}
.section{padding-block:clamp(72px,10vw,128px);}
.section--tight{padding-block:clamp(56px,7vw,88px);}
.center{text-align:center;}
.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--nx-teal-300);
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-weight:500;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:var(--nx-cyan);
  display:inline-block;
}
.eyebrow--center{justify-content:center;}

/* ---------- Type scale ---------- */
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.06;letter-spacing:-.02em;color:var(--nx-ink);}
.display{font-size:clamp(2.6rem,6vw,4.6rem);font-weight:600;letter-spacing:-.03em;line-height:1.02;}
h2.title{font-size:clamp(2rem,3.6vw,3rem);letter-spacing:-.025em;}
h3{font-size:clamp(1.3rem,2vw,1.6rem);}
.lead{font-size:clamp(1.08rem,1.5vw,1.32rem);color:var(--nx-grey);line-height:1.55;font-weight:400;}
.measure{max-width:62ch;}
.measure-sm{max-width:46ch;}
.accent{color:var(--nx-teal-300);}
.cyan{color:var(--nx-cyan);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-body);font-weight:600;font-size:15.5px;
  padding:14px 24px;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:.25s var(--ease);white-space:nowrap;
  letter-spacing:-.01em;
}
.btn svg{width:17px;height:17px;flex:0 0 auto;}
.btn--primary{background:var(--nx-teal);color:var(--nx-cloud);}
.btn--primary:hover{background:var(--nx-teal-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn--accent{background:var(--nx-cyan);color:var(--nx-ink);}
.btn--accent:hover{background:#5EE9DC;color:var(--nx-ink);transform:translateY(-1px);box-shadow:0 8px 28px rgba(54,224,208,.35);}
.btn--ghost{background:transparent;color:var(--nx-ink);border-color:var(--nx-mist);}
.btn--ghost:hover{border-color:var(--nx-teal);color:var(--nx-teal);background:#fff;}
.btn--on-dark{background:transparent;color:var(--nx-cloud);border-color:rgba(247,249,248,.24);}
.btn--on-dark:hover{border-color:var(--nx-cyan);color:var(--nx-cyan);}
.arrow{transition:transform .25s var(--ease);}
.btn:hover .arrow{transform:translateX(3px);}

/* ---------- Header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,249,248,.82);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s,background .3s;
}
.site-header.scrolled{border-bottom-color:var(--nx-mist);}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:0;font-family:var(--font-display);font-weight:600;font-size:21px;letter-spacing:-.02em;color:var(--nx-ink);flex:0 0 auto;min-width:0;}
.brand:hover{color:var(--nx-ink);}
.brand img{height:26px;width:auto;display:block;}
.site-footer .brand img{height:24px;background:#fff;border-radius:8px;padding:8px 12px;}
.nav-links{display:flex;align-items:center;gap:4px;list-style:none;}
.nav-links a{
  color:var(--nx-ink);font-size:15px;font-weight:500;padding:9px 14px;border-radius:8px;
  transition:.2s;letter-spacing:-.01em;
}
.nav-links a:hover{background:rgba(13,79,74,.06);color:var(--nx-teal);}
.nav-right{display:flex;align-items:center;gap:14px;flex:0 0 auto;}

/* Language toggle */
.lang{
  display:inline-flex;align-items:center;border:1px solid var(--nx-mist);
  border-radius:999px;overflow:hidden;font-family:var(--font-mono);font-size:12px;font-weight:500;
  background:#fff;
}
.lang button{
  border:0;background:transparent;padding:7px 12px;cursor:pointer;color:var(--nx-grey);
  letter-spacing:.04em;transition:.2s;
}
.lang button.active{background:var(--nx-teal);color:var(--nx-cloud);}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;color:var(--nx-ink);}
.nav-toggle svg{width:24px;height:24px;}

/* ---------- Hero (shared) ---------- */
.hero{position:relative;overflow:hidden;}
.hero-variant{display:none;}
.hero-variant.is-active{display:block;}

/* Variant A — dark statement */
.heroA{background:var(--nx-ink);color:var(--nx-cloud);position:relative;}
.heroA .bg-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(54,224,208,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(54,224,208,.05) 1px,transparent 1px);
  background-size:54px 54px;
  mask-image:radial-gradient(ellipse 80% 80% at 50% 0%,#000 30%,transparent 75%);
}
.heroA .glow{
  position:absolute;top:-20%;left:50%;transform:translateX(-50%);
  width:900px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(54,224,208,.18) 0%,rgba(13,79,74,.12) 35%,transparent 70%);
  filter:blur(20px);pointer-events:none;animation:drift 16s var(--ease) infinite alternate;
}
@keyframes drift{from{transform:translateX(-54%) translateY(0)}to{transform:translateX(-46%) translateY(26px)}}
.heroA .wrap{position:relative;z-index:2;padding-block:clamp(96px,15vw,168px);}
.heroA .display{color:#fff;max-width:17ch;}
.heroA .lead{color:var(--nx-grey-dark);}
.heroA .eyebrow{color:var(--nx-cyan);}
.heroA .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px;}
.heroA .hero-stats{display:flex;flex-wrap:wrap;gap:48px;margin-top:64px;padding-top:32px;border-top:1px solid var(--nx-line-dark);}
.stat .num{font-family:var(--font-display);font-size:clamp(1.8rem,3vw,2.4rem);color:#fff;font-weight:600;letter-spacing:-.02em;}
.stat .num span{color:var(--nx-cyan);}
.stat .lbl{font-size:13.5px;color:var(--nx-grey-dark);margin-top:2px;}

/* Variant B — light split */
.heroB{background:var(--nx-cloud);position:relative;}
.heroB .bg-dots{
  position:absolute;inset:0;
  background-image:radial-gradient(var(--nx-mist) 1.1px,transparent 1.1px);
  background-size:26px 26px;opacity:.55;
  mask-image:radial-gradient(ellipse 70% 90% at 80% 30%,#000,transparent 70%);
}
.heroB .wrap{position:relative;z-index:2;padding-block:clamp(80px,11vw,128px);}
.heroB-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,72px);align-items:center;}
.heroB .display{max-width:14ch;}
.heroB .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.heroB .trust-row{margin-top:44px;}

/* Variant C — terminal / computational */
.heroC{background:linear-gradient(160deg,var(--nx-ink) 0%,#0c1c22 60%,var(--nx-teal-700) 140%);color:var(--nx-cloud);position:relative;}
.heroC .bg-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(54,224,208,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(54,224,208,.045) 1px,transparent 1px);
  background-size:48px 48px;mask-image:linear-gradient(180deg,#000,transparent);
}
.heroC .wrap{position:relative;z-index:2;padding-block:clamp(84px,12vw,140px);}
.heroC-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(32px,5vw,64px);align-items:center;}
.heroC .display{color:#fff;max-width:15ch;}
.heroC .lead{color:var(--nx-grey-dark);}
.heroC .eyebrow{color:var(--nx-cyan);}
.heroC .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}

/* Terminal panel */
.terminal{
  background:rgba(10,20,24,.72);border:1px solid var(--nx-line-dark);border-radius:14px;
  box-shadow:var(--shadow-lg);overflow:hidden;backdrop-filter:blur(8px);
}
.terminal-bar{display:flex;align-items:center;gap:8px;padding:13px 16px;border-bottom:1px solid var(--nx-line-dark);}
.terminal-bar .dot{width:11px;height:11px;border-radius:50%;background:#2a3b40;}
.terminal-bar .ttl{font-family:var(--font-mono);font-size:12px;color:var(--nx-grey-dark);margin-left:8px;letter-spacing:.04em;}
.terminal-body{padding:20px 20px 24px;font-family:var(--font-mono);font-size:13.5px;line-height:1.85;}
.t-line{display:flex;gap:10px;}
.t-prompt{color:var(--nx-cyan);}
.t-user{color:#cfe7e3;}
.t-out{color:var(--nx-grey-dark);padding-left:0;display:block;margin:6px 0 14px;}
.t-out b{color:var(--nx-lime);font-weight:500;}
.t-cursor{display:inline-block;width:8px;height:16px;background:var(--nx-cyan);vertical-align:-2px;animation:blink 1.1s steps(1) infinite;}
@keyframes blink{50%{opacity:0}}

/* ---------- Node-graph visual (hero B) ---------- */
.nodeviz{position:relative;aspect-ratio:1/.92;border-radius:var(--radius);background:linear-gradient(160deg,var(--nx-ink),var(--nx-teal-700));overflow:hidden;box-shadow:var(--shadow-lg);}
.nodeviz .vgrid{position:absolute;inset:0;background-image:linear-gradient(rgba(54,224,208,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(54,224,208,.06) 1px,transparent 1px);background-size:40px 40px;}
.node{position:absolute;border-radius:50%;background:var(--nx-cyan);box-shadow:0 0 0 4px rgba(54,224,208,.14),0 0 18px rgba(54,224,208,.6);}
.node.lime{background:var(--nx-lime);box-shadow:0 0 0 4px rgba(125,249,166,.14),0 0 18px rgba(125,249,166,.55);}
.node.dim{background:#2c4e4a;box-shadow:none;}
.edge{position:absolute;height:1.5px;background:linear-gradient(90deg,rgba(54,224,208,.5),rgba(54,224,208,.05));transform-origin:left center;}
.nodeviz .chip{
  position:absolute;font-family:var(--font-mono);font-size:11.5px;color:var(--nx-cloud);
  background:rgba(10,20,24,.6);border:1px solid var(--nx-line-dark);padding:6px 11px;border-radius:7px;backdrop-filter:blur(6px);
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.82)}}
.node.p{animation:pulse 3.4s var(--ease) infinite;}

/* ---------- Trust / logos ---------- */
.trust{border-top:1px solid var(--nx-mist);border-bottom:1px solid var(--nx-mist);background:#fff;}
.trust .wrap{padding-block:34px;display:flex;align-items:center;gap:36px;flex-wrap:wrap;justify-content:center;}
.trust .trust-label{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--nx-grey);}
.logo-ph{
  height:30px;min-width:108px;border:1px dashed var(--nx-mist);border-radius:7px;
  display:grid;place-items:center;font-family:var(--font-mono);font-size:11px;color:var(--nx-grey);
  letter-spacing:.04em;background:var(--nx-cloud);
}
.trust-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.trust-row .trust-label{margin-right:4px;}

/* ---------- Section heads ---------- */
.sec-head{max-width:760px;margin-bottom:clamp(40px,5vw,64px);}
.sec-head.center{margin-inline:auto;}
.sec-head .lead{margin-top:18px;}

/* ---------- Services ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.svc-card{
  background:#fff;border:1px solid var(--nx-mist);border-radius:var(--radius);padding:34px 30px 30px;
  transition:.3s var(--ease);position:relative;overflow:hidden;display:flex;flex-direction:column;
}
.svc-card::before{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:var(--nx-cyan);transition:width .35s var(--ease);}
.svc-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--nx-teal-300);}
.svc-card:hover::before{width:100%;}
.svc-ico{
  width:50px;height:50px;border-radius:12px;display:grid;place-items:center;margin-bottom:22px;
  background:rgba(13,79,74,.07);color:var(--nx-teal);
}
.svc-ico svg{width:25px;height:25px;}
.svc-num{position:absolute;top:28px;right:30px;font-family:var(--font-mono);font-size:12px;color:var(--nx-grey);letter-spacing:.05em;}
.svc-card h3{margin-bottom:12px;}
.svc-card p{color:var(--nx-grey);font-size:15.5px;}
.svc-list{list-style:none;margin-top:20px;display:flex;flex-direction:column;gap:9px;}
.svc-list li{font-size:14px;color:var(--nx-ink);display:flex;gap:10px;align-items:flex-start;}
.svc-list li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--nx-cyan);margin-top:8px;flex:0 0 auto;}

/* ---------- Approach / process ---------- */
.approach{background:var(--nx-ink);color:var(--nx-cloud);position:relative;overflow:hidden;}
.approach .bg-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(54,224,208,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(54,224,208,.04) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(ellipse 90% 70% at 50% 50%,#000,transparent);}
.approach .wrap{position:relative;z-index:2;}
.approach .eyebrow{color:var(--nx-cyan);}
.approach h2.title,.approach h3{color:#fff;}
.approach .lead{color:var(--nx-grey-dark);}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--nx-line-dark);border:1px solid var(--nx-line-dark);border-radius:var(--radius);overflow:hidden;margin-top:8px;}
.step{background:var(--nx-ink);padding:30px 26px 34px;position:relative;transition:.3s;}
.step:hover{background:var(--nx-ink-soft);}
.step .k{font-family:var(--font-mono);font-size:13px;color:var(--nx-cyan);letter-spacing:.06em;}
.step h3{font-size:1.18rem;margin:16px 0 10px;}
.step p{color:var(--nx-grey-dark);font-size:14.5px;}

/* ---------- Value / why ---------- */
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.value-card{padding:30px 28px;border-radius:var(--radius);background:#fff;border:1px solid var(--nx-mist);}
.value-card .vk{font-family:var(--font-display);font-size:2.4rem;font-weight:600;color:var(--nx-teal);letter-spacing:-.02em;}
.value-card .vk span{color:var(--nx-cyan);}
.value-card h3{font-size:1.15rem;margin:6px 0 8px;}
.value-card p{color:var(--nx-grey);font-size:15px;}

/* ---------- FAQ (GEO) ---------- */
.faq-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(32px,5vw,72px);align-items:start;}
.faq-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--nx-mist);}
.faq-item{border-bottom:1px solid var(--nx-mist);}
.faq-q{
  width:100%;text-align:left;background:none;border:0;cursor:pointer;
  display:flex;justify-content:space-between;gap:20px;align-items:center;
  padding:24px 4px;font-family:var(--font-display);font-size:1.18rem;font-weight:500;color:var(--nx-ink);letter-spacing:-.01em;
}
.faq-q:hover{color:var(--nx-teal);}
.faq-q .pm{flex:0 0 auto;width:24px;height:24px;position:relative;color:var(--nx-teal-300);transition:.3s;}
.faq-q .pm::before,.faq-q .pm::after{content:"";position:absolute;background:currentColor;border-radius:2px;}
.faq-q .pm::before{top:11px;left:4px;width:16px;height:2px;}
.faq-q .pm::after{top:4px;left:11px;width:2px;height:16px;transition:transform .3s;}
.faq-item.open .pm::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease);}
.faq-a-inner{padding:0 4px 26px;color:var(--nx-grey);font-size:15.5px;max-width:60ch;}

/* ---------- CTA band ---------- */
.cta{background:linear-gradient(150deg,var(--nx-teal) 0%,var(--nx-ink) 100%);color:var(--nx-cloud);position:relative;overflow:hidden;border-radius:0;}
.cta .glow{position:absolute;right:-10%;top:-40%;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(54,224,208,.22),transparent 65%);filter:blur(10px);}
.cta .wrap{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta h2{color:#fff;font-size:clamp(1.8rem,3.2vw,2.7rem);max-width:18ch;}
.cta p{color:rgba(247,249,248,.78);margin-top:14px;max-width:48ch;}
.cta .hero-cta{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,64px);align-items:start;}
.contact-info{display:flex;flex-direction:column;gap:26px;}
.ci-item{display:flex;gap:16px;align-items:flex-start;}
.ci-item .ci-ico{width:42px;height:42px;border-radius:11px;background:rgba(13,79,74,.07);color:var(--nx-teal);display:grid;place-items:center;flex:0 0 auto;}
.ci-item .ci-ico svg{width:20px;height:20px;}
.ci-item .ci-k{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--nx-grey);}
.ci-item .ci-v{font-size:16px;color:var(--nx-ink);font-weight:500;margin-top:2px;}
.form-card{background:#fff;border:1px solid var(--nx-mist);border-radius:var(--radius);padding:clamp(26px,3vw,38px);box-shadow:var(--shadow-sm);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;font-weight:500;color:var(--nx-ink);margin-bottom:7px;}
.field input,.field textarea,.field select{
  width:100%;padding:13px 15px;border:1px solid var(--nx-mist);border-radius:var(--radius-sm);
  font-family:var(--font-body);font-size:15.5px;color:var(--nx-ink);background:var(--nx-cloud);transition:.2s;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--nx-teal-300);box-shadow:0 0 0 3px rgba(54,224,208,.16);background:#fff;}
.field textarea{resize:vertical;min-height:120px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.consent{display:flex;gap:11px;align-items:flex-start;font-size:13px;color:var(--nx-grey);margin-bottom:20px;}
.consent input{width:auto;margin-top:3px;flex:0 0 auto;}
.form-note{font-size:13px;color:var(--nx-grey);margin-top:14px;text-align:center;}
.form-ok{display:none;text-align:center;padding:30px 10px;}
.form-ok.show{display:block;}
.form-ok .ok-ico{width:56px;height:56px;border-radius:50%;background:rgba(125,249,166,.2);color:var(--nx-teal);display:grid;place-items:center;margin:0 auto 16px;}
.form-ok .ok-ico svg{width:28px;height:28px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--nx-ink);color:var(--nx-grey-dark);padding-block:64px 30px;}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.site-footer .brand{color:#fff;margin-bottom:16px;}
.footer-about{font-size:14.5px;color:var(--nx-grey-dark);max-width:36ch;}
.footer-col h4{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--nx-grey-dark);font-weight:500;margin-bottom:16px;}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:#c3d2ce;font-size:14.5px;}
.footer-col a:hover{color:var(--nx-cyan);}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;margin-top:48px;padding-top:24px;border-top:1px solid var(--nx-line-dark);font-size:13px;}
.footer-bottom .legal-links{display:flex;gap:22px;flex-wrap:wrap;}
.footer-bottom a{color:var(--nx-grey-dark);}
.footer-bottom a:hover{color:var(--nx-cyan);}

/* ---------- Chat / call widget ---------- */
.chat-fab{
  position:fixed;right:24px;bottom:24px;z-index:80;
  width:60px;height:60px;border-radius:50%;border:0;cursor:pointer;
  background:var(--nx-teal);color:var(--nx-cloud);display:grid;place-items:center;
  box-shadow:0 10px 30px rgba(13,79,74,.4);transition:.3s var(--ease);
}
.chat-fab:hover{transform:scale(1.06);background:var(--nx-teal-700);}
.chat-fab svg{width:26px;height:26px;transition:.3s;}
.chat-fab .ic-close{display:none;}
.chat-fab.open .ic-chat{display:none;}
.chat-fab.open .ic-close{display:block;}
.chat-fab .badge{position:absolute;top:-2px;right:-2px;width:16px;height:16px;border-radius:50%;background:var(--nx-cyan);border:2px solid var(--nx-cloud);}

.chat-panel{
  position:fixed;right:24px;bottom:96px;z-index:80;width:min(380px,calc(100vw - 32px));
  height:min(560px,calc(100vh - 140px));
  background:#fff;border-radius:18px;box-shadow:var(--shadow-lg);border:1px solid var(--nx-mist);
  display:flex;flex-direction:column;overflow:hidden;
  opacity:0;transform:translateY(16px) scale(.97);pointer-events:none;transition:.3s var(--ease);
}
.chat-panel.open{opacity:1;transform:none;pointer-events:auto;}
.chat-head{background:linear-gradient(150deg,var(--nx-teal),var(--nx-ink));color:#fff;padding:20px 22px;}
.chat-head .ch-row{display:flex;align-items:center;gap:11px;}
.chat-head .ch-av{width:38px;height:38px;border-radius:50%;background:rgba(54,224,208,.18);display:grid;place-items:center;position:relative;}
.chat-head .ch-av::after{content:"";position:absolute;bottom:1px;right:1px;width:10px;height:10px;border-radius:50%;background:var(--nx-lime);border:2px solid var(--nx-teal);}
.chat-head .ch-av svg{width:20px;height:20px;color:var(--nx-cyan);}
.chat-head .ch-name{font-family:var(--font-display);font-weight:600;font-size:16px;}
.chat-head .ch-status{font-size:12px;color:rgba(247,249,248,.7);}
.chat-head .ch-sub{font-size:13px;color:rgba(247,249,248,.82);margin-top:12px;}
.chat-body{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:14px;background:var(--nx-cloud);}
.msg{max-width:84%;padding:11px 15px;border-radius:14px;font-size:14.5px;line-height:1.5;}
.msg.bot{background:#fff;border:1px solid var(--nx-mist);border-bottom-left-radius:5px;color:var(--nx-ink);align-self:flex-start;}
.msg.user{background:var(--nx-teal);color:var(--nx-cloud);border-bottom-right-radius:5px;align-self:flex-end;}
.msg.typing{display:flex;gap:4px;align-items:center;}
.msg.typing span{width:7px;height:7px;border-radius:50%;background:var(--nx-grey);animation:typing 1.2s infinite;}
.msg.typing span:nth-child(2){animation-delay:.18s}.msg.typing span:nth-child(3){animation-delay:.36s}
@keyframes typing{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}
.chat-chips{display:flex;flex-wrap:wrap;gap:8px;padding:0 20px 14px;background:var(--nx-cloud);}
.chat-chip{font-size:13px;padding:8px 13px;border-radius:999px;border:1px solid var(--nx-mist);background:#fff;color:var(--nx-teal);cursor:pointer;transition:.2s;font-family:var(--font-body);}
.chat-chip:hover{border-color:var(--nx-teal-300);background:rgba(54,224,208,.08);}
.chat-input{display:flex;gap:10px;padding:14px 16px;border-top:1px solid var(--nx-mist);background:#fff;}
.chat-input input{flex:1;border:1px solid var(--nx-mist);border-radius:999px;padding:11px 16px;font-family:var(--font-body);font-size:14.5px;background:var(--nx-cloud);}
.chat-input input:focus{outline:none;border-color:var(--nx-teal-300);background:#fff;}
.chat-input button{width:42px;height:42px;border-radius:50%;border:0;background:var(--nx-teal);color:#fff;cursor:pointer;display:grid;place-items:center;flex:0 0 auto;transition:.2s;}
.chat-input button:hover{background:var(--nx-teal-700);}
.chat-input button svg{width:18px;height:18px;}

/* ---------- Legal page ---------- */
.legal{background:#fff;}
.legal-wrap{max-width:820px;margin:0 auto;padding:clamp(48px,7vw,88px) var(--gut);}
.legal-wrap h1{font-size:clamp(2rem,4vw,2.8rem);margin-bottom:10px;}
.legal-wrap .legal-sub{color:var(--nx-grey);font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;margin-bottom:44px;}
.legal-wrap h2{font-size:1.4rem;margin:40px 0 14px;color:var(--nx-teal);}
.legal-wrap h3{font-size:1.1rem;margin:26px 0 8px;}
.legal-wrap p,.legal-wrap li{color:#2a3633;font-size:16px;margin-bottom:12px;}
.legal-wrap ul{padding-left:22px;margin-bottom:16px;}
.legal-wrap a{color:var(--nx-teal-300);text-decoration:underline;}
.legal-ph{background:rgba(54,224,208,.08);border:1px dashed var(--nx-teal-300);border-radius:6px;padding:2px 7px;font-family:var(--font-mono);font-size:13px;color:var(--nx-teal-700);}
.legal-back{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:13px;color:var(--nx-grey);margin-bottom:32px;}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  .heroA .glow,.node.p,.t-cursor{animation:none;}
  html{scroll-behavior:auto;}
}

/* ---------- Language visibility ----------
   Hide the inactive language WITHOUT forcing a display value on the
   visible one, so elements keep their natural display (inline-flex
   eyebrows, inline spans, etc.). No inline styles needed = no flicker. */
html:not([lang="de"]) [data-de]{display:none;}
html[lang="de"] [data-en]{display:none;}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .svc-grid,.value-grid{grid-template-columns:1fr 1fr;}
  .steps{grid-template-columns:1fr 1fr;}
  .heroB-grid,.heroC-grid,.faq-grid,.contact-grid{grid-template-columns:1fr;}
  .nodeviz{max-width:480px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px 36px;}
  .heroB .nodeviz,.heroC .terminal{margin-top:36px;}
}
@media (max-width:680px){
  body{font-size:16px;}
  .nav-links{
    position:absolute;top:72px;left:0;right:0;background:var(--nx-cloud);border-bottom:1px solid var(--nx-mist);
    flex-direction:column;align-items:stretch;gap:0;padding:8px var(--gut) 16px;display:none;box-shadow:var(--shadow-md);
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:13px 10px;border-radius:8px;}
  .nav-toggle{display:block;}
  .svc-grid,.value-grid,.steps,.form-row{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr 1fr;}
  .cta .wrap{flex-direction:column;align-items:flex-start;}
  .heroA .hero-stats{gap:28px;}
  .nav-links{top:64px;}
  .nav{height:64px;}
  .brand img{height:22px;}
}