:root{--navy:#0f2243;--navy2:#0b1a35;--blue:#1260d6;--blue2:#0b4aa8;--sky:#eaf2fd;--sky2:#d7e7fb;--orange:#f26a1b;--orange2:#d9560c;--ink:#14213a;--muted:#5b6b85;--line:#e3e9f3;--bg:#ffffff;--soft:#f5f8fd;--r:16px;--shadow:0 18px 50px rgba(15,34,67,.12)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{font-family:"Work Sans",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
h1,h2,h3{line-height:1.15;color:var(--navy)}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--orange);margin-bottom:10px}
.sec{padding:84px 0}
.sec.soft{background:var(--soft)}
.sec h2{font-size:clamp(28px,4vw,40px);font-weight:700;margin-bottom:14px}
.lead{font-size:18px;color:var(--muted);max-width:640px}
.center{text-align:center}.center .lead{margin:0 auto}
.btn{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:999px;padding:13px 26px;font:600 15px inherit;font-family:inherit;cursor:pointer;transition:.2s;white-space:nowrap}
.btn.primary{background:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(242,106,27,.28)}
.btn.primary:hover{background:var(--orange2);transform:translateY(-1px)}
.btn.blue{background:var(--blue);color:#fff}.btn.blue:hover{background:var(--blue2)}
.btn.ghost{background:#fff;color:var(--navy);border:1.5px solid var(--sky2)}.btn.ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn:disabled{opacity:.6;cursor:default}

/* preloader */
#preloader{position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;background:#fff;perspective:900px;transition:opacity .5s ease,visibility .5s ease}
#preloader.is-hidden{opacity:0;visibility:hidden}
#preloader img{width:110px;height:auto;animation:flip 1.6s cubic-bezier(.65,0,.35,1) infinite;filter:drop-shadow(0 8px 18px rgba(18,96,214,.3))}
@keyframes flip{0%{transform:rotateY(0)}70%,100%{transform:rotateY(360deg)}}
@media (prefers-reduced-motion:reduce){#preloader img{animation:none}}

/* nav */
#nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid transparent;transition:.25s}
#nav.stuck{border-color:var(--line);box-shadow:0 6px 24px rgba(15,34,67,.07)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:78px;gap:16px}
.brand img{height:54px;width:auto}
.menu{display:flex;align-items:center;gap:4px}
.menu a{padding:9px 14px;border-radius:999px;font-weight:500;font-size:15px;color:#33425e;transition:.2s}
.menu a:hover,.menu a.on{color:var(--blue);background:var(--sky)}
.nav-cta{display:flex;align-items:center;gap:12px}
.burger{display:none;background:none;border:0;width:42px;height:42px;border-radius:10px;cursor:pointer}
.burger span{display:block;width:22px;height:2px;background:var(--navy);margin:5px auto;border-radius:2px;transition:.25s}
@media(max-width:980px){
  .burger{display:block}.nav-cta .btn{display:none}
  .menu{position:absolute;left:0;right:0;top:78px;background:#fff;flex-direction:column;align-items:stretch;padding:10px 20px 18px;border-bottom:1px solid var(--line);box-shadow:0 18px 30px rgba(15,34,67,.1);display:none}
  #nav.open .menu{display:flex}
  .menu a{padding:13px 14px;font-size:16px}
  #nav.open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  #nav.open .burger span:nth-child(2){opacity:0}
  #nav.open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}

/* hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#f4f8fe 0%,#fff 100%);padding:70px 0 90px}
.tri{position:absolute;pointer-events:none;opacity:.9}
.tri.a{right:-30px;top:-20px;width:520px}.tri.b{left:-60px;bottom:-40px;width:400px}
.hero-in{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(34px,5.4vw,60px);font-weight:800;letter-spacing:-.02em;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero p.lead{margin-bottom:30px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-art{display:grid;place-items:center}
.hero-art .disc{width:min(420px,80vw);aspect-ratio:1;border-radius:50%;background:radial-gradient(circle at 30% 25%,#fff,#e6f0fd 60%,#d3e4fb);display:grid;place-items:center;box-shadow:var(--shadow)}
.hero-art img{width:62%;height:auto;animation:float 6s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-10px)}}
@media(max-width:860px){.hero{padding:44px 0 60px}.hero-in{grid-template-columns:1fr;text-align:center}.hero-btns{justify-content:center}.hero-art{order:-1}.hero-art .disc{width:230px}.lead{margin-left:auto;margin-right:auto}}
.stats{position:relative;margin-top:-46px;z-index:5}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-radius:var(--r);box-shadow:var(--shadow);border:1px solid var(--line)}
.stat{padding:26px 18px;text-align:center;border-right:1px solid var(--line)}.stat:last-child{border:0}
.stat b{display:block;font-size:clamp(26px,3.4vw,38px);color:var(--blue);font-weight:800;line-height:1.1}
.stat span{font-size:14px;color:var(--muted)}
@media(max-width:700px){.stat-row{grid-template-columns:repeat(2,1fr)}.stat:nth-child(2){border-right:0}.stat:nth-child(-n+2){border-bottom:1px solid var(--line)}}

/* about */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:start;margin-top:10px}
.about-grid p{color:#41516c;margin-bottom:14px;font-size:17px}
.vm{display:grid;gap:16px}
.vm .card{background:var(--sky);border-radius:var(--r);padding:22px 24px;border-left:5px solid var(--blue)}
.vm .card.o{border-left-color:var(--orange);background:#fff3ec}
.vm h3{font-size:14px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:6px;color:var(--navy)}
.vm p{margin:0;font-size:16px}
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px}
.val{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;text-align:center;font-weight:700;color:var(--navy);box-shadow:0 6px 18px rgba(15,34,67,.05)}
.val i{display:grid;place-items:center;width:46px;height:46px;border-radius:12px;background:var(--sky);margin:0 auto 10px;font-style:normal;font-size:22px}
@media(max-width:860px){.about-grid{grid-template-columns:1fr}.values{grid-template-columns:1fr}}

/* services */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px}
.svc{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px 24px;transition:.25s;box-shadow:0 6px 18px rgba(15,34,67,.04)}
.svc:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--sky2)}
.ico{width:54px;height:54px;border-radius:14px;background:var(--sky);display:grid;place-items:center;margin-bottom:18px;color:var(--blue)}
.ico svg{width:28px;height:28px}
.svc:nth-child(even) .ico{background:#fff0e7;color:var(--orange)}
.svc h3{font-size:19px;margin-bottom:8px}.svc p{font-size:15px;color:var(--muted)}
@media(max-width:900px){.grid3{grid-template-columns:repeat(2,1fr)}}@media(max-width:560px){.grid3{grid-template-columns:1fr}}

/* products */
.prods{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:20px;margin-top:44px}
.prod{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px;display:flex;flex-direction:column;gap:10px}
.prod.live{grid-row:span 2;background:linear-gradient(160deg,var(--navy) 0%,#17366b 100%);color:#fff;border:0;box-shadow:var(--shadow)}
.prod.live h3{color:#fff;font-size:26px}.prod.live p{color:#cfdcf3}
.badge{align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;border-radius:999px;padding:4px 12px;background:var(--sky);color:var(--blue)}
.prod.live .badge{background:var(--orange);color:#fff}
.prod h3{font-size:20px}.prod p{font-size:15px;color:var(--muted)}
.prod ul{list-style:none;margin:6px 0 10px}.prod li{padding:4px 0 4px 26px;position:relative;font-size:15px;color:#dbe6fa}
.prod li:before{content:"";position:absolute;left:0;top:11px;width:14px;height:8px;border-left:2.5px solid var(--orange);border-bottom:2.5px solid var(--orange);transform:rotate(-45deg)}
.prod .acts{display:flex;gap:10px;flex-wrap:wrap;margin-top:auto;padding-top:10px}
.prod .more{font-size:14px;color:#9fb6de;margin-top:4px}.prod .more a{text-decoration:underline}
.prod.soon{border-style:dashed}
.prod.wide{grid-column:2/-1}
.prod.soon .ico{margin-bottom:6px}
@media(max-width:980px){.prods{grid-template-columns:1fr 1fr}.prod.live{grid-column:1/-1;grid-row:auto}.prod.wide{grid-column:1/-1}}@media(max-width:560px){.prods{grid-template-columns:1fr}}

/* clients */
.mq{position:relative;overflow:hidden;margin-top:36px;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.mq-track{display:flex;width:max-content;animation:mq var(--mq-dur,30s) linear infinite}
.mq:hover .mq-track{animation-play-state:paused}
.mq-slide{flex:none;width:220px;height:110px;margin:0 18px;display:grid;place-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px}
.mq-img{width:auto;height:auto;max-width:100%;max-height:80px;object-fit:contain}
@keyframes mq{to{transform:translateX(calc(-1 * var(--mq-shift,0px)))}}
@media(prefers-reduced-motion:reduce){.mq-track{animation:none}.mq{overflow-x:auto}}
.also{text-align:center;color:var(--muted);font-size:15px;margin-top:26px}
.tm{text-align:center;font-size:12px;color:#97a3b8;margin-top:10px}

/* contact */
.contact-box{display:grid;grid-template-columns:.9fr 1.1fr;gap:0;background:#fff;border-radius:22px;box-shadow:var(--shadow);overflow:hidden;border:1px solid var(--line)}
.c-info{background:linear-gradient(160deg,var(--navy),#17366b);color:#fff;padding:44px 38px}
.c-info h2{color:#fff;font-size:30px}.c-info p{color:#cfdcf3;margin:10px 0 26px}
.c-row{display:flex;gap:14px;align-items:center;margin-bottom:18px}
.c-row .ico{margin:0;background:rgba(255,255,255,.1);color:#ffb88a;flex:none}
.c-row small{display:block;color:#9fb6de;font-size:13px}.c-row b{font-weight:600;word-break:break-all}
.c-form{padding:44px 38px}
.f{margin-bottom:16px}
.f label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:5px}
.f input,.f textarea{width:100%;border:1.5px solid var(--line);border-radius:12px;padding:12px 14px;font:inherit;background:#fff;transition:.2s}
.f input:focus,.f textarea:focus{outline:0;border-color:var(--blue);box-shadow:0 0 0 4px rgba(18,96,214,.12)}
.f textarea{resize:vertical;min-height:110px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
@media(max-width:860px){.contact-box{grid-template-columns:1fr}.c-info,.c-form{padding:32px 24px}.two{grid-template-columns:1fr}}
.ov{position:fixed;inset:0;z-index:1000;display:none;align-items:center;justify-content:center;padding:16px;background:rgba(10,20,40,.55)}
.ov.open{display:flex}
.ov .box{background:#fff;border-radius:16px;max-width:380px;width:100%;padding:30px 26px 24px;text-align:center;box-shadow:0 30px 60px rgba(0,0,0,.35);animation:pop .25s ease}
@keyframes pop{from{opacity:0;transform:translateY(8px) scale(.97)}}
.ov .mark{width:56px;height:56px;border-radius:50%;margin:0 auto 14px;display:grid;place-items:center;font-size:28px;font-weight:700;background:#dff5e6;color:#188a3f}
.ov[data-s=error] .mark{background:#fde4e1;color:#c0392b}
.ov p{font-size:17px;font-weight:600;margin-bottom:18px;color:var(--navy)}

/* footer */
footer{background:var(--navy2);color:#c3d0e8;padding:54px 0 28px}
.f-top{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.12)}
.f-brand{display:flex;align-items:center;gap:14px}
.f-brand .chip{background:#fff;border-radius:14px;padding:8px 12px}.f-brand img{height:44px;width:auto}
.f-links{display:flex;gap:6px;flex-wrap:wrap}
.f-links a{padding:6px 12px;border-radius:999px;font-size:15px}.f-links a:hover{background:rgba(255,255,255,.1);color:#fff}
.f-bot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;font-size:14px;color:#8fa3c6}
#top{position:fixed;right:22px;bottom:24px;width:46px;height:46px;border-radius:50%;border:0;background:var(--orange);color:#fff;font-size:22px;cursor:pointer;box-shadow:0 8px 20px rgba(242,106,27,.4);opacity:0;pointer-events:none;transition:.3s;z-index:40}
#top.show{opacity:1;pointer-events:auto}
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none}}

/* 4D specialist services */
.fd{margin-top:28px;background:linear-gradient(160deg,var(--navy),#17366b);border-radius:22px;padding:34px;color:#fff;box-shadow:var(--shadow)}
.fd-head{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-bottom:24px}
.fd-head a{background:#fff;border-radius:14px;padding:10px 14px;display:block;transition:.2s}.fd-head a:hover{transform:translateY(-2px)}
.fd-head img{height:56px;width:auto}
.fd h3{color:#fff;font-size:clamp(20px,2.6vw,28px)}
.fd .eyebrow{color:#ffb88a}
.fd-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.fd-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:24px}
.fd-card h4{font-size:19px;color:#fff;margin-bottom:8px}.fd-card p{font-size:15px;color:#cfdcf3}
@media(max-width:760px){.fd{padding:24px 18px}.fd-grid{grid-template-columns:1fr}}
.fd-logo{width:56px;height:56px;border-radius:12px;margin-bottom:14px;display:block;box-shadow:0 4px 14px rgba(0,0,0,.25)}