:root{
  --navy: #0b1d33;
  --navy-deep: #071426;
  --blue: #2f6fed;
  --blue-light: #6f9bff;
  --bg: #f7f9fc;
  --card: #ffffff;
  --text: #10131a;
  --text-muted: #55606f;
  --border: #e4e9f1;
  --radius: 14px;
  --max: 1120px;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Inter',system-ui,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:'Sora',system-ui,sans-serif;font-weight:700;line-height:1.15;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:var(--max);margin:0 auto;padding-inline:24px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,0.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  padding-block:12px;
}
.brand{white-space:nowrap;display:inline-flex;align-items:center;}
.brand-logo{height:36px;width:auto;display:block;}
.main-nav{display:flex;gap:28px;margin-left:auto;}
.main-nav a{font-size:0.92rem;font-weight:500;color:var(--text-muted);transition:color .15s;}
.main-nav a:hover{color:var(--navy);}
.header-phone{
  font-weight:600;font-size:0.92rem;
  border:1px solid var(--border);
  color:var(--navy);
  padding:8px 16px;border-radius:999px;
  white-space:nowrap;
}
.header-phone:hover{background:var(--bg);}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px;}
.nav-toggle span{width:22px;height:2px;background:var(--navy);display:block;}

@media (max-width: 860px){
  .main-nav{
    position:fixed;inset:64px 0 auto 0;
    background:#fff;
    flex-direction:column;gap:0;
    padding:8px 24px 20px;
    transform:translateY(-8px);
    opacity:0;pointer-events:none;
    transition:opacity .18s, transform .18s;
    border-bottom:1px solid var(--border);
  }
  .main-nav.open{opacity:1;pointer-events:auto;transform:translateY(0);}
  .main-nav a{padding:12px 0;border-bottom:1px solid var(--border);color:var(--text);}
  .header-phone{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:linear-gradient(160deg,var(--navy) 0%,var(--navy-deep) 100%);
  color:#fff;
  overflow:hidden;
  padding-block:96px 110px;
}
.hero-bg{position:absolute;inset:0;opacity:.5;}
.hero-nodes{position:absolute;right:-8%;top:-10%;width:640px;height:640px;max-width:none;}
.node-lines line{stroke:var(--blue-light);stroke-width:1.4;opacity:.45;}
.node-dots circle{fill:var(--blue);}
.hero-inner{position:relative;max-width:640px;}
.eyebrow{
  color:var(--blue-light);font-weight:600;font-size:0.85rem;
  letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px;
}
.hero h1{font-size:clamp(2.4rem,5vw,3.6rem);margin-bottom:18px;}
.hero-lead{font-size:1.1rem;color:#c9d4e8;max-width:52ch;margin-bottom:32px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;}

.btn{
  display:inline-block;padding:13px 26px;border-radius:999px;
  font-weight:600;font-size:0.95rem;transition:transform .12s, background .15s, opacity .15s;
}
.btn-primary{background:var(--blue);color:#fff;}
.btn-primary:hover{background:#4a7ff0;transform:translateY(-1px);}
.btn-ghost{border:1px solid rgba(255,255,255,.35);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.08);}

/* ---------- Section shared ---------- */
section{padding-block:88px;}
h2{font-size:clamp(1.8rem,3.2vw,2.4rem);margin-bottom:10px;}
.section-lead{color:var(--text-muted);font-size:1.05rem;margin-bottom:44px;max-width:56ch;}

/* ---------- Services ---------- */
.service-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:28px;}
.service-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:32px 28px;
}
.service-icon{
  width:52px;height:52px;border-radius:12px;
  background:rgba(47,111,237,.1);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:20px;
}
.service-icon svg{width:26px;height:26px;fill:none;stroke:var(--blue);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;}
.service-card h3{font-size:1.15rem;margin-bottom:10px;}
.service-card p{color:var(--text-muted);font-size:0.96rem;}

@media (max-width: 860px){
  .service-grid{grid-template-columns:1fr;}
}

/* ---------- About ---------- */
.about{background:var(--navy);color:#fff;}
.about-inner{display:grid;grid-template-columns:1.3fr 1fr;gap:56px;align-items:center;}
.about-text h2{color:#fff;}
.about-text p{color:#c9d4e8;margin-bottom:16px;max-width:58ch;}
.about-graphic{width:100%;max-width:260px;margin-inline:auto;}
.about-graphic rect{fill:none;stroke:var(--blue-light);stroke-width:1.6;opacity:.5;}
.about-graphic path{stroke:var(--blue-light);opacity:.7;}
.about-graphic circle{fill:var(--blue);}

@media (max-width: 860px){
  .about-inner{grid-template-columns:1fr;text-align:left;}
  .about-figure{order:-1;max-width:180px;margin-inline:auto;}
}

/* ---------- Gallery ---------- */
.gallery-placeholder{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.gallery-slot{
  aspect-ratio:4/3;border-radius:var(--radius);
  background:#eef2f8;
  border:1px solid var(--border);
  overflow:hidden;
}
.gallery-slot img{width:100%;height:100%;object-fit:cover;display:block;}
@media (max-width: 860px){
  .gallery-placeholder{grid-template-columns:repeat(2,1fr);}
}

/* ---------- Contact ---------- */
.contact{background:var(--card);}
.contact-inner{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;}
.contact-list{display:grid;gap:22px;margin-top:32px;}
.contact-list dt{font-weight:600;font-size:0.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:4px;}
.contact-list dd a:hover{color:var(--blue);}

.contact-form{
  display:grid;gap:14px;
  background:var(--bg);border:1px solid var(--border);
  border-radius:var(--radius);padding:32px;
}
.contact-form label{font-size:0.85rem;font-weight:600;color:var(--text-muted);}
.contact-form input,.contact-form textarea{
  width:100%;padding:11px 14px;border-radius:8px;
  border:1px solid var(--border);font:inherit;background:#fff;
}
.contact-form input:focus,.contact-form textarea:focus{outline:2px solid var(--blue-light);outline-offset:1px;}
.contact-form button{justify-self:start;margin-top:6px;border:0;cursor:pointer;}
.hidden-field{position:absolute;left:-9999px;}

@media (max-width: 860px){
  .contact-inner{grid-template-columns:1fr;}
}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy-deep);color:#9fb0cc;padding-block:28px;}
.footer-inner{text-align:center;font-size:0.85rem;}