:root{
  --navy:#03152d;
  --navy-deep:#020e1f;
  --navy-soft:#071d39;
  --blue:#52ace3;
  --red:#e83c3a;
  --white:#ffffff;
  --ink:#09182a;
  --muted:#667386;
  --muted-dark:#aab6c8;
  --line:rgba(255,255,255,.12);
  --line-dark:#dfe5ec;
  --max:1240px;
  --radius:26px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--navy);color:var(--white);font-family:Inter,"Segoe UI",Arial,sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%}
button,input,select,textarea{font:inherit}
.container{width:min(var(--max),calc(100% - 56px));margin-inline:auto}

.site-header{position:fixed;z-index:100;top:0;left:0;right:0;border-bottom:1px solid rgba(255,255,255,.06);background:rgba(2,14,31,.72);backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);transition:background .3s ease}
.nav-shell{height:86px;display:flex;align-items:center;gap:40px}
.brand{display:flex;align-items:center;margin-right:auto}
.brand img{display:block;width:220px;height:auto;max-height:58px;object-fit:contain}
.nav-links{display:flex;align-items:center;gap:32px;color:#cdd7e4;font-size:13px;font-weight:600;letter-spacing:.01em}
.nav-links a{position:relative;transition:color .2s ease}
.nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:1px;background:var(--blue);transition:right .25s ease}
.nav-links a:hover{color:#fff}.nav-links a:hover:after{right:0}
.menu-btn{display:none;width:44px;height:44px;border:0;background:none;padding:0;cursor:pointer}
.menu-btn span{display:block;width:24px;height:1px;background:#fff;margin:7px auto;transition:.2s}

.btn{min-height:50px;border-radius:999px;padding:0 24px;display:inline-flex;align-items:center;justify-content:center;gap:12px;border:1px solid transparent;font-size:13px;font-weight:700;letter-spacing:.01em;cursor:pointer;transition:transform .25s ease,background .25s ease,border-color .25s ease,box-shadow .25s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:#fff;color:#071628;box-shadow:0 14px 38px rgba(0,0,0,.18)}
.btn-primary:hover{background:#f4f7fa;box-shadow:0 18px 42px rgba(0,0,0,.23)}
.btn-ghost{border-color:rgba(255,255,255,.28);color:#fff;background:rgba(255,255,255,.02)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.46)}
.btn-text{padding-inline:8px;color:#d7e0ec}
.btn-text:hover{color:#fff}
.btn-dark{background:var(--ink);color:#fff;min-width:190px}

.kicker{margin:0 0 22px;color:#c2cfdf;font-size:11px;font-weight:800;letter-spacing:.22em}
.kicker.dark{color:#55718f}

.hero{min-height:850px;position:relative;overflow:hidden;display:flex;align-items:center;padding-top:86px;background:#03152d}
.hero-photo{position:absolute;inset:0;background:url('assets/hero-premium.webp') 58% center/cover no-repeat;transform:scale(1.015);animation:heroBreath 16s ease-in-out infinite alternate}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(2,14,31,.96) 0%,rgba(2,14,31,.89) 34%,rgba(2,14,31,.45) 63%,rgba(2,14,31,.15) 100%),linear-gradient(0deg,#03152d 0%,transparent 24%)}
@keyframes heroBreath{from{transform:scale(1.015)}to{transform:scale(1.045)}}
.hero-content{position:relative;z-index:2;padding-top:28px}
.hero h1{font-size:clamp(58px,6vw,92px);max-width:910px;line-height:1.02;letter-spacing:-.052em;margin:0 0 26px;font-weight:650}
.hero h1 span{font-weight:420;color:#cad6e5}
.hero-copy{max-width:650px;margin:0;color:#b8c6d8;font-size:19px;line-height:1.65}
.hero-actions{display:flex;align-items:center;gap:18px;margin-top:36px}
.hero-note{position:absolute;z-index:2;left:50%;transform:translateX(-50%);bottom:34px;width:min(var(--max),calc(100% - 56px));display:flex;align-items:center;gap:14px;color:rgba(255,255,255,.63);font-size:11px;letter-spacing:.08em;text-transform:uppercase}
.hero-note i{width:20px;height:1px;background:rgba(255,255,255,.24)}

.section-light{background:#f7f8fa;color:var(--ink);padding:130px 0}
.section-dark{background:var(--navy-deep);padding:120px 0}
.section-heading{text-align:center;max-width:800px;margin:0 auto 66px}
.section-heading.narrow{max-width:700px}
.section-heading h2{font-size:clamp(44px,5vw,72px);line-height:1.07;letter-spacing:-.047em;margin:0 0 22px;font-weight:620}
.section-heading>p:last-child{max-width:660px;margin:0 auto;color:var(--muted);font-size:17px;line-height:1.7}

.specialty-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.specialty-card{min-height:250px;padding:34px 32px 32px;background:#fff;border:1px solid #e5e9ee;border-radius:22px;display:flex;flex-direction:column;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
.specialty-card:hover{transform:translateY(-4px);box-shadow:0 24px 60px rgba(15,35,58,.08);border-color:#d9e1e9}
.specialty-featured{background:linear-gradient(145deg,#f1f8fd,#fff)}
.specialty-icon{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;margin-bottom:38px}
.specialty-icon svg{width:28px;height:28px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.specialty-icon.red{color:var(--red);background:#fff1f1}
.specialty-icon.blue{color:#268fd4;background:#edf7fd}
.specialty-card h3{font-size:21px;letter-spacing:-.018em;margin:0 0 10px;font-weight:650}
.specialty-card p{margin:0;color:#657184;font-size:14px;line-height:1.65;max-width:310px}
.center-cta{text-align:center;margin-top:46px}

.engineering{min-height:760px;display:grid;grid-template-columns:1.08fr .92fr;background:var(--navy);overflow:hidden}
.engineering-visual{min-height:760px;position:relative;overflow:hidden}
.engineering-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent 65%,#03152d 100%),linear-gradient(0deg,rgba(3,21,45,.28),transparent 42%)}
.engineering-visual img{width:100%;height:100%;object-fit:cover;display:block;filter:saturate(.9)}
.engineering-copy{padding:108px clamp(48px,6vw,110px);display:flex;flex-direction:column;justify-content:center}
.engineering-copy h2{font-size:clamp(42px,4.5vw,68px);line-height:1.08;letter-spacing:-.045em;margin:0 0 26px;font-weight:620}
.engineering-copy>p:not(.kicker){color:var(--muted-dark);font-size:17px;line-height:1.75;max-width:650px;margin:0}
.principles{margin-top:46px;border-top:1px solid var(--line)}
.principles>div{display:grid;grid-template-columns:44px 1fr;column-gap:14px;padding:22px 0;border-bottom:1px solid var(--line)}
.principles span{grid-row:1/3;color:var(--blue);font-size:11px;font-weight:800;padding-top:3px}
.principles strong{font-size:15px;font-weight:650}
.principles p{margin:5px 0 0;color:#8fa0b5;font-size:13px;line-height:1.55}

.process .section-heading{margin-bottom:54px}
.process .section-heading h2{color:#fff}
.process-line{display:grid;grid-template-columns:repeat(4,1fr);position:relative;border-top:1px solid var(--line)}
.process-step{padding:32px 30px 0 0;position:relative}
.process-step:before{content:"";position:absolute;top:-5px;left:0;width:9px;height:9px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 6px rgba(82,172,227,.09)}
.process-step b{color:var(--blue);font-size:11px;letter-spacing:.12em}
.process-step h3{font-size:20px;letter-spacing:-.02em;margin:14px 0 8px}
.process-step p{max-width:230px;color:#8fa0b5;font-size:13px;line-height:1.6;margin:0}

.section-contact{padding:130px 0;background:radial-gradient(circle at 10% 20%,rgba(82,172,227,.12),transparent 25%),#05182f}
.contact-shell{display:grid;grid-template-columns:.8fr 1.2fr;gap:90px;align-items:start}
.contact-intro{position:sticky;top:126px;padding-top:18px}
.contact-intro h2{font-size:clamp(48px,5.2vw,78px);line-height:1.02;letter-spacing:-.05em;margin:0 0 24px;font-weight:620}
.contact-intro>p:not(.kicker){max-width:490px;color:#aab7c8;font-size:17px;line-height:1.75;margin:0}
.whatsapp-link{display:inline-block;margin-top:28px;color:#dfe8f3;font-size:13px;border-bottom:1px solid rgba(255,255,255,.24);padding-bottom:4px;transition:.2s}
.whatsapp-link:hover{color:#fff;border-color:var(--blue)}

.lead-form{background:rgba(255,255,255,.035);border:1px solid var(--line);border-radius:28px;padding:34px;box-shadow:0 30px 90px rgba(0,0,0,.16)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label{display:block;color:#cbd5e2;font-size:12px;font-weight:600;letter-spacing:.01em;margin-bottom:16px}
label small{font-weight:400;color:#6f8097}
input,select,textarea{width:100%;margin-top:8px;border:1px solid rgba(255,255,255,.12);border-radius:13px;background:#071d38;color:#fff;padding:14px 15px;outline:none;transition:border-color .2s,box-shadow .2s,background .2s}
input::placeholder,textarea::placeholder{color:#6f8095}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#9bb0c8 50%),linear-gradient(135deg,#9bb0c8 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 15px) 50%;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:42px}
select option{background:#071d38;color:#fff}
input:focus,select:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(82,172,227,.09);background:#08213f}
textarea{resize:vertical;min-height:100px}
.consent{display:flex;align-items:flex-start;gap:10px;margin:4px 0 18px;color:#9dacbf;font-weight:400}
.consent input{width:16px;height:16px;margin:1px 0 0;accent-color:#1b82d3;flex:0 0 auto}
.submit-btn{width:100%;border:0;border-radius:14px;background:#fff;color:#071628;min-height:56px}
.submit-btn:hover{background:#f1f4f7}
.submit-btn:disabled{opacity:.6;cursor:wait;transform:none}
.privacy-note{margin:10px 0 0;text-align:center;color:#6f8096;font-size:11px}
.form-status{min-height:20px;margin:12px 0 0;text-align:center;font-size:12px}
.form-status.ok{color:#79dfab}.form-status.err{color:#ff8f8d}

.site-footer{background:#020e1f;border-top:1px solid var(--line);padding:46px 0 22px}
.footer-grid{display:grid;grid-template-columns:1fr 1fr 1fr;align-items:center;gap:40px}
.footer-brand img{display:block;width:205px;height:auto}
.footer-signature{text-align:center}
.footer-signature p{margin:0;color:#d7e0ea;font-size:12px;letter-spacing:.02em}
.signature-lines{display:flex;width:220px;max-width:100%;height:2px;margin:12px auto 0}
.signature-lines span:first-child{width:50%;background:var(--blue)}
.signature-lines span:last-child{width:50%;background:var(--red)}
.footer-contact{display:flex;justify-content:flex-end;gap:18px;flex-wrap:wrap;color:#9dabbd;font-size:12px}
.footer-contact a:hover{color:#fff}
.footer-bottom{margin-top:32px;padding-top:18px;border-top:1px solid rgba(255,255,255,.07);display:flex;justify-content:space-between;color:#607189;font-size:10px}

.reveal{opacity:0;transform:translateY(18px);transition:opacity .65s ease,transform .65s ease}
.reveal.visible{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.hero-photo{animation:none}.reveal{opacity:1;transform:none;transition:none}*{transition-duration:.01ms!important}}

@media(max-width:1050px){
  .nav-links,.nav-cta{display:none}
  .menu-btn{display:block}
  .nav-links.open{display:flex;position:absolute;top:86px;left:0;right:0;padding:28px;background:#03152d;border-top:1px solid var(--line);flex-direction:column;align-items:flex-start;gap:24px;font-size:16px}
  .specialty-grid{grid-template-columns:repeat(2,1fr)}
  .engineering{grid-template-columns:1fr}
  .engineering-visual{min-height:560px}
  .engineering-visual:after{background:linear-gradient(0deg,#03152d 0%,transparent 35%)}
  .engineering-copy{padding:80px 40px 100px}
  .contact-shell{grid-template-columns:1fr;gap:48px}
  .contact-intro{position:static;max-width:680px}
  .footer-grid{grid-template-columns:1fr;justify-items:center;text-align:center}
  .footer-contact{justify-content:center}
}

@media(max-width:720px){
  .container{width:min(100% - 30px,var(--max))}
  .nav-shell{height:74px}.nav-links.open{top:74px}
  .brand img{width:170px;max-height:48px}
  .hero{min-height:760px;padding-top:74px;align-items:flex-end;padding-bottom:128px}
  .hero-photo{background-position:65% center}
  .hero-overlay{background:linear-gradient(0deg,#03152d 4%,rgba(3,21,45,.93) 36%,rgba(3,21,45,.5) 70%,rgba(3,21,45,.22) 100%)}
  .hero h1{font-size:50px;letter-spacing:-.045em}
  .hero-copy{font-size:16px;line-height:1.65}
  .hero-actions{display:grid;grid-template-columns:1fr;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-note{width:calc(100% - 30px);bottom:24px;justify-content:center;gap:8px;font-size:9px}
  .hero-note i{width:10px}
  .section-light,.section-dark,.section-contact{padding:88px 0}
  .section-heading{margin-bottom:42px;text-align:left}
  .section-heading .kicker{text-align:left}
  .section-heading h2{font-size:43px}
  .section-heading>p:last-child{font-size:15px;margin:0}
  .specialty-grid{grid-template-columns:1fr}
  .specialty-card{min-height:215px;padding:28px}
  .specialty-icon{margin-bottom:30px}
  .engineering-visual{min-height:430px}
  .engineering-copy{padding:70px 24px 82px}
  .engineering-copy h2{font-size:42px}
  .process-line{grid-template-columns:1fr;border-top:0}
  .process-step{padding:24px 0 24px 34px;border-left:1px solid var(--line);border-top:0}
  .process-step:before{top:31px;left:-5px}
  .contact-intro h2{font-size:48px}
  .lead-form{padding:22px;border-radius:22px}
  .form-row{grid-template-columns:1fr;gap:0}
  .footer-brand img{width:185px}
  .footer-contact{flex-direction:column;gap:7px}
  .footer-bottom{flex-direction:column;align-items:center;gap:6px}
}