/* ============================================================
   Seyon Labs — single page site
   Palette pulled from the logo: ice-cyan → deep blue, gold accent
   ============================================================ */

:root{
  --bg:#070B14;
  --bg-2:#0A0F1C;
  --surface:rgba(255,255,255,.035);
  --surface-2:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.09);
  --line-soft:rgba(255,255,255,.055);

  --cyan:#5CE1F2;
  --cyan-deep:#22B8D8;
  --blue:#2F6BE0;
  --blue-deep:#12306B;
  --gold:#E9C46A;

  --text:#E9F0FA;
  --muted:#93A6C2;
  --muted-2:#6B7F9C;

  --grad:linear-gradient(120deg,#7FEAF7 0%,#39C7EA 38%,#3D7BE8 78%,#8FA9FF 100%);
  --grad-soft:linear-gradient(135deg,rgba(92,225,242,.16),rgba(47,107,224,.10));

  --radius:18px;
  --radius-sm:12px;
  --shadow:0 24px 60px -24px rgba(0,0,0,.85);
  --glow:0 0 40px -8px rgba(92,225,242,.45);

  --ff-head:'Sora',system-ui,-apple-system,'Segoe UI',sans-serif;
  --ff-body:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;

  --maxw:1180px;
  --ease:cubic-bezier(.22,.68,.35,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--ff-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:16px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
svg{display:block}
::selection{background:rgba(92,225,242,.28)}

/* scrollbar */
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#1B2A44;border-radius:10px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:#26405f}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--cyan);color:#04121b;padding:.7rem 1.1rem;border-radius:0 0 10px 0;font-weight:600
}
.skip-link:focus{left:0}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* ---------- layout ---------- */
.container{width:min(100% - 2.5rem,var(--maxw));margin-inline:auto}
.section{padding:clamp(4.5rem,9vw,8rem) 0;position:relative}
.section-alt{background:
  radial-gradient(1200px 500px at 50% 0%,rgba(47,107,224,.10),transparent 70%),
  var(--bg-2);
  border-block:1px solid var(--line-soft)}

/* ---------- ambient background ---------- */
.bg-layer{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.bg-grid{
  position:absolute;inset:-2px;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 20%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 20%,transparent 75%);
}
.orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5}
.orb-1{width:620px;height:620px;top:-220px;left:-160px;background:radial-gradient(circle,#1E6FA8,transparent 65%)}
.orb-2{width:520px;height:520px;top:32%;right:-200px;background:radial-gradient(circle,#2C4CC0,transparent 65%);opacity:.42}
.orb-3{width:600px;height:600px;bottom:-260px;left:32%;background:radial-gradient(circle,#0F5F7A,transparent 65%);opacity:.35}
.bg-noise{
  position:absolute;inset:0;opacity:.16;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}

/* ---------- header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:100;
  padding:1.1rem 0;
  transition:padding .35s var(--ease),background .35s var(--ease),border-color .35s var(--ease),backdrop-filter .35s;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  padding:.6rem 0;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1.5rem}

.brand{display:flex;align-items:center;gap:.65rem}
.brand-mark{width:40px;height:40px;object-fit:contain;filter:drop-shadow(0 0 14px rgba(92,225,242,.45));transition:transform .4s var(--ease)}
.brand:hover .brand-mark{transform:rotate(-8deg) scale(1.06)}
.brand-text{font-family:var(--ff-head);font-weight:700;font-size:1.18rem;letter-spacing:-.02em}
.brand-text em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-left:.18em}

.nav{display:flex;align-items:center;gap:.35rem}
.nav-link{
  position:relative;padding:.55rem .95rem;border-radius:999px;
  font-size:.93rem;font-weight:500;color:var(--muted);
  transition:color .25s var(--ease),background .25s var(--ease)
}
.nav-link:hover{color:var(--text);background:var(--surface)}
.nav-link.active{color:var(--text)}
.nav-link.active::after{
  content:'';position:absolute;left:50%;bottom:.28rem;translate:-50% 0;
  width:16px;height:2px;border-radius:2px;background:var(--grad)
}
.nav-cta{
  margin-left:.5rem;color:#04121b;font-weight:600;
  background:var(--grad);box-shadow:0 8px 24px -10px rgba(60,160,230,.9)
}
.nav-cta:hover{color:#04121b;background:var(--grad);transform:translateY(-1px)}
.nav-cta.active::after{display:none}

.nav-toggle{
  display:none;background:none;border:1px solid var(--line);border-radius:10px;
  width:44px;height:44px;cursor:pointer;padding:11px 10px;gap:5px;flex-direction:column;justify-content:center
}
.nav-toggle span{display:block;height:2px;background:var(--text);border-radius:2px;transition:.3s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- typography helpers ---------- */
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{
  display:inline-block;font-size:.78rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:1rem
}
.section-title{
  font-family:var(--ff-head);font-weight:800;letter-spacing:-.03em;line-height:1.12;
  font-size:clamp(2rem,4.4vw,3.25rem);margin-bottom:1.1rem
}
.section-sub{color:var(--muted);max-width:56ch;font-size:1.03rem}
.section-head{text-align:center;margin-bottom:clamp(2.5rem,5vw,4rem)}
.section-head .section-sub{margin-inline:auto}
.lead{font-size:1.1rem;color:#C6D5E8;margin-bottom:1rem}
p{color:var(--muted)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  padding:.85rem 1.5rem;border-radius:999px;border:1px solid transparent;
  font-weight:600;font-size:.95rem;cursor:pointer;white-space:nowrap;
  transition:transform .25s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease),border-color .3s
}
.btn-primary{background:var(--grad);color:#04121b;box-shadow:0 14px 34px -14px rgba(60,170,235,.95)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 44px -14px rgba(60,170,235,1)}
.btn-primary svg{transition:transform .3s var(--ease)}
.btn-primary:hover svg{transform:translateX(3px)}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--text)}
.btn-ghost:hover{background:var(--surface-2);border-color:rgba(92,225,242,.45);transform:translateY(-2px)}
.btn-block{width:100%}

.pill{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.42rem 1rem .42rem .7rem;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);
  font-size:.82rem;color:#B9CBE2;margin-bottom:1.6rem
}
.pill .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(92,225,242,.16);animation:pulse 2.2s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 8px rgba(92,225,242,0)}}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding:9rem 0 5rem}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.hero-title{
  font-family:var(--ff-head);font-weight:800;letter-spacing:-.035em;line-height:1.06;
  font-size:clamp(2.4rem,6vw,4.4rem);margin-bottom:1.4rem
}
.hero-sub{font-size:clamp(1rem,1.6vw,1.14rem);max-width:56ch;color:var(--muted);margin-bottom:2.2rem}
.hero-actions{display:flex;gap:.9rem;flex-wrap:wrap;margin-bottom:3rem}

.hero-stats{display:flex;gap:clamp(1.5rem,4vw,3rem);flex-wrap:wrap}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{
  font-family:var(--ff-head);font-size:clamp(1.7rem,3vw,2.2rem);font-weight:800;line-height:1.1;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent
}
.hero-stats span{font-size:.85rem;color:var(--muted-2);letter-spacing:.02em}

/* hero visual */
.hero-visual{position:relative;display:grid;place-items:center;min-height:380px}
.hex-frame{
  position:relative;width:min(320px,72%);aspect-ratio:1;display:grid;place-items:center;
  background:var(--grad-soft);
  border:1px solid rgba(92,225,242,.24);
  border-radius:34% 66% 34% 66% / 50% 34% 66% 50%;
  box-shadow:var(--glow),inset 0 0 60px rgba(92,225,242,.08);
  animation:morph 14s ease-in-out infinite;
  backdrop-filter:blur(6px)
}
@keyframes morph{
  0%,100%{border-radius:34% 66% 34% 66% / 50% 34% 66% 50%}
  50%{border-radius:62% 38% 58% 42% / 42% 62% 38% 58%}
}
.hero-logo{
  width:66%;filter:drop-shadow(0 0 34px rgba(92,225,242,.55));
  animation:float 6s ease-in-out infinite
}
@keyframes float{50%{transform:translateY(-14px)}}

.visual-ring{position:absolute;border-radius:50%;border:1px dashed rgba(92,225,242,.22)}
.ring-1{width:min(420px,94%);aspect-ratio:1;animation:spin 34s linear infinite}
.ring-2{width:min(520px,116%);aspect-ratio:1;border-style:solid;border-color:rgba(255,255,255,.05);animation:spin 48s linear reverse infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.chip{
  position:absolute;padding:.4rem .95rem;border-radius:999px;
  background:rgba(10,16,28,.85);border:1px solid var(--line);
  font-size:.78rem;font-weight:600;letter-spacing:.04em;color:#CFE0F2;
  backdrop-filter:blur(8px);box-shadow:0 10px 26px -14px #000;
  animation:float 5s ease-in-out infinite
}
.chip-1{top:8%;right:4%;color:var(--cyan);border-color:rgba(92,225,242,.35)}
.chip-2{bottom:16%;left:0;animation-delay:1.2s}
.chip-3{bottom:4%;right:12%;color:var(--gold);border-color:rgba(233,196,106,.32);animation-delay:2.2s}

.scroll-hint{position:absolute;bottom:2rem;left:50%;translate:-50% 0;opacity:.6;transition:opacity .3s}
.scroll-hint:hover{opacity:1}
.mouse{display:block;width:24px;height:38px;border:1.5px solid var(--muted);border-radius:14px;position:relative}
.mouse i{
  position:absolute;top:7px;left:50%;translate:-50% 0;width:3px;height:7px;border-radius:2px;
  background:var(--cyan);animation:wheel 1.8s ease-in-out infinite
}
@keyframes wheel{0%{opacity:0;transform:translate(-50%,0)}30%{opacity:1}100%{opacity:0;transform:translate(-50%,13px)}}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,4.5rem);align-items:center}
.about-copy p{margin-bottom:1rem}
.check-list{margin-top:1.8rem;display:grid;gap:.75rem}
.check-list li{position:relative;padding-left:2rem;color:#C1D1E6;font-size:.97rem}
.check-list li::before{
  content:'';position:absolute;left:0;top:.42rem;width:18px;height:18px;border-radius:50%;
  background:var(--grad-soft);border:1px solid rgba(92,225,242,.4)
}
.check-list li::after{
  content:'';position:absolute;left:5.5px;top:.72rem;width:7px;height:4px;
  border-left:1.8px solid var(--cyan);border-bottom:1.8px solid var(--cyan);transform:rotate(-45deg)
}

.about-cards{display:grid;gap:1rem}
.glass-card,.service{
  position:relative;padding:1.6rem;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--line);
  transition:transform .4s var(--ease),border-color .4s,background .4s,box-shadow .4s;
  overflow:hidden
}
.glass-card::before,.service::before{
  content:'';position:absolute;inset:0;opacity:0;transition:opacity .4s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%),rgba(92,225,242,.11),transparent 62%)
}
.glass-card:hover,.service:hover{
  transform:translateY(-5px);border-color:rgba(92,225,242,.32);
  background:var(--surface-2);box-shadow:var(--shadow)
}
.glass-card:hover::before,.service:hover::before{opacity:1}
.glass-card h3,.service h3{
  font-family:var(--ff-head);font-size:1.08rem;font-weight:700;letter-spacing:-.01em;margin-bottom:.45rem;position:relative
}
.glass-card p,.service p{font-size:.94rem;position:relative}

.card-ico{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;margin-bottom:1.05rem;
  background:var(--grad-soft);border:1px solid rgba(92,225,242,.24);color:var(--cyan);
  position:relative;transition:box-shadow .4s,color .4s
}
.card-ico svg{width:22px;height:22px}
.card-ico.small{width:38px;height:38px;border-radius:11px;margin:0;flex:none}
.card-ico.small svg{width:18px;height:18px}
.glass-card:hover .card-ico,.service:hover .card-ico{box-shadow:0 0 26px -6px rgba(92,225,242,.55)}

/* ---------- services ---------- */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.15rem}
.service{padding:1.9rem 1.7rem}
.tags{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:1.1rem;position:relative}
.tags li{
  font-size:.74rem;padding:.24rem .65rem;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-soft);color:var(--muted)
}

/* ---------- stack ---------- */
.marquee{
  overflow:hidden;padding:1.2rem 0;margin:0 0 clamp(2.5rem,5vw,3.5rem);
  border-block:1px solid var(--line-soft);
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)
}
.marquee-track{display:flex;gap:3rem;width:max-content;animation:marquee 38s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track span{
  font-family:var(--ff-head);font-weight:600;font-size:1.15rem;
  color:#61789A;white-space:nowrap;transition:color .3s
}
.marquee-track span:hover{color:var(--cyan)}
@keyframes marquee{to{transform:translateX(-50%)}}

.stack-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-soft);border:1px solid var(--line-soft);border-radius:var(--radius);overflow:hidden}
.stack-col{padding:1.6rem;background:var(--bg);transition:background .35s}
.stack-col:hover{background:#0C1424}
.stack-col h4{
  font-family:var(--ff-head);font-size:.82rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:.5rem;font-weight:600
}
.stack-col p{font-size:.94rem;color:#B4C5DA}

/* ---------- process ---------- */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:1.15rem;counter-reset:s}
.step{
  position:relative;padding:1.9rem 1.5rem 1.6rem;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--line);
  transition:transform .4s var(--ease),border-color .4s,background .4s
}
.step:hover{transform:translateY(-5px);border-color:rgba(92,225,242,.3);background:var(--surface-2)}
.step-num{
  font-family:var(--ff-head);font-size:2.4rem;font-weight:800;line-height:1;display:block;margin-bottom:.8rem;
  background:linear-gradient(180deg,rgba(92,225,242,.85),rgba(47,107,224,.15));
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.step h3{font-family:var(--ff-head);font-size:1.05rem;font-weight:700;margin-bottom:.45rem}
.step p{font-size:.92rem}

.cta-banner{
  margin-top:clamp(2.5rem,5vw,3.5rem);padding:clamp(1.8rem,4vw,2.6rem);
  border-radius:calc(var(--radius) + 6px);
  display:flex;align-items:center;justify-content:space-between;gap:1.8rem;flex-wrap:wrap;
  background:
    radial-gradient(600px 200px at 15% 0%,rgba(92,225,242,.16),transparent 70%),
    linear-gradient(120deg,rgba(47,107,224,.16),rgba(10,16,28,.5));
  border:1px solid rgba(92,225,242,.22);
  box-shadow:var(--shadow)
}
.cta-banner h3{font-family:var(--ff-head);font-size:clamp(1.25rem,2.6vw,1.75rem);font-weight:700;letter-spacing:-.02em;margin-bottom:.4rem}
.cta-banner p{max-width:52ch}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(1.5rem,4vw,3rem);align-items:start}
.contact-info{display:grid;gap:.85rem;align-content:start}
.info-row{
  display:flex;align-items:center;gap:.95rem;padding:1.05rem 1.2rem;
  border-radius:var(--radius-sm);background:var(--surface);border:1px solid var(--line);
  transition:border-color .35s,background .35s,transform .35s var(--ease)
}
.info-row:not(.static):hover{border-color:rgba(92,225,242,.34);background:var(--surface-2);transform:translateX(4px)}
.info-row span:last-child{display:flex;flex-direction:column;font-size:.95rem;color:#C4D4E8;line-height:1.5}
.info-row strong{font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2);font-weight:600}

.socials{display:flex;gap:.6rem;margin-top:.6rem}
.socials a{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--surface);border:1px solid var(--line);color:var(--muted);
  transition:.3s var(--ease)
}
.socials a svg{width:17px;height:17px}
.socials a:hover{color:var(--cyan);border-color:rgba(92,225,242,.4);transform:translateY(-3px);box-shadow:var(--glow)}

.contact-form{
  padding:clamp(1.4rem,3vw,2rem);border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--line);display:grid;gap:1.05rem;
  box-shadow:var(--shadow)
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:1.05rem}
.field{display:grid;gap:.45rem}
.field label{font-size:.82rem;font-weight:600;color:#B7C8DD;letter-spacing:.01em}
.field .opt{color:var(--muted-2);font-weight:400}
.field input,.field select,.field textarea{
  width:100%;padding:.8rem 1rem;border-radius:var(--radius-sm);
  background:rgba(4,8,16,.55);border:1px solid var(--line);color:var(--text);
  font-size:.95rem;transition:border-color .3s,background .3s,box-shadow .3s;resize:vertical
}
.field textarea{min-height:120px}
.field input::placeholder,.field textarea::placeholder{color:#5A6C87}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:rgba(92,225,242,.55);background:rgba(4,8,16,.8);
  box-shadow:0 0 0 4px rgba(92,225,242,.10)
}
.field select{appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2393A6C2' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 1rem center;background-size:16px;padding-right:2.6rem}
.field select option{background:#0A0F1C;color:var(--text)}
.field input.invalid,.field textarea.invalid{border-color:#E2565B;box-shadow:0 0 0 4px rgba(226,86,91,.12)}

.hp{position:absolute!important;left:-9999px!important;opacity:0;height:0;width:0}
.form-note{font-size:.9rem;min-height:1.2rem;margin-top:-.2rem}
.form-note.ok{color:#5CE1B0}
.form-note.err{color:#F08A8E}

/* ---------- footer ---------- */
.site-footer{padding:2.6rem 0;border-top:1px solid var(--line-soft);background:rgba(5,8,15,.6)}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;flex-wrap:wrap}
.footer-nav{display:flex;gap:1.4rem;flex-wrap:wrap}
.footer-nav a{font-size:.92rem;color:var(--muted);transition:color .25s}
.footer-nav a:hover{color:var(--cyan)}
.copy{font-size:.85rem;color:var(--muted-2)}
.site-footer .brand-mark{width:34px;height:34px}
.site-footer .brand-text{font-size:1.02rem}

/* ---------- reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(2,1fr)}
  .stack-grid{grid-template-columns:repeat(2,1fr)}
  .hero-inner{grid-template-columns:1fr;text-align:left}
  .hero-visual{order:-1;min-height:300px;margin-inline:auto;width:min(420px,100%)}
  .about-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
}

@media (max-width:768px){
  .nav{
    position:fixed;inset:0 0 auto 0;top:0;padding:6rem 1.5rem 2rem;
    flex-direction:column;align-items:stretch;gap:.35rem;
    background:rgba(7,11,20,.97);backdrop-filter:blur(20px);
    border-bottom:1px solid var(--line);
    transform:translateY(-104%);transition:transform .45s var(--ease);
    box-shadow:0 30px 60px -30px #000
  }
  .nav.open{transform:none}
  .nav-link{padding:.85rem 1rem;font-size:1.02rem;border-radius:12px}
  .nav-link.active::after{display:none}
  .nav-cta{margin:.6rem 0 0;text-align:center;justify-content:center}
  .nav-toggle{display:flex;z-index:2}
  .site-header{background:rgba(7,11,20,.72);backdrop-filter:blur(18px);border-bottom-color:var(--line)}

  .hero{padding:7rem 0 4rem;min-height:auto}
  .services-grid,.process,.stack-grid{grid-template-columns:1fr}
  .stack-grid{gap:1px}
  .field-row{grid-template-columns:1fr}
  .hero-stats{gap:1.5rem 2rem}
  .cta-banner{flex-direction:column;align-items:flex-start}
  .footer-inner{flex-direction:column;text-align:center}
  .scroll-hint{display:none}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}