:root {
  --navy: #0b1f3a;
  --navy-deep: #081528;
  --navy-light: #1d3a63;
  --logo-blue: #0a2850;
  --ink: #16213a;
  --muted: #5b6472;
  --paper: #f4f6f8;
  --white: #fff;
  --line: #dde2e8;
  --silver: #9aa5b3;
  --silver-light: #e7eaee;
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); line-height: 1.6; }
a { color: inherit; text-decoration: none; }
.container { width: min(1120px, calc(100% - 40px)); margin: auto; }
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(244,246,248,.94); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(11,31,58,.1); }
.nav { min-height: 132px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { height: 104px; width: auto; display: block; }
.nav-right { display: flex; align-items: center; gap: 26px; }
nav#main-nav { display: flex; align-items: center; gap: 28px; font-size: 13px; }
nav#main-nav a { position: relative; font-weight: 600; letter-spacing: .01em; }
.lang-switch { display: flex; align-items: center; gap: 10px; }
.lang-flag { display: inline-flex; align-items: center; padding: 4px; border-radius: 4px; opacity: .45; filter: grayscale(60%); transition: .2s ease; }
.lang-flag img { width: 26px; height: auto; display: block; border-radius: 2px; box-shadow: 0 0 0 1px rgba(11,31,58,.18); }
.lang-flag:hover { opacity: 1; filter: grayscale(0); }
.lang-flag.active { opacity: 1; filter: grayscale(0); box-shadow: inset 0 -2px 0 var(--navy); }
nav#main-nav a:not(.btn-nav):hover { color: var(--navy); opacity: .7; }
.btn-nav { padding: 0 20px; min-height: 42px; font-size: 12px; }
.menu-toggle { display: none; border: 0; background: none; font-size: 24px; color: var(--navy); }
.hero { padding: 100px 0 110px; min-height: 650px; display: flex; align-items: center; background: radial-gradient(circle at 85% 30%, #dde3ea 0, transparent 35%), var(--paper); }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 80px; align-items: center; }
.eyebrow { margin: 0 0 20px; font-size: 11px; font-weight: 700; letter-spacing: .2em; color: var(--silver); }
h1,h2,h3,h4,p { margin-top: 0; }
h1,h2 { font-weight: 400; letter-spacing: -.035em; line-height: 1.08; color: var(--navy); }
h1 { font-size: clamp(42px, 6vw, 72px); margin-bottom: 28px; }
h2 { font-size: clamp(34px, 4.4vw, 52px); margin-bottom: 22px; }
h3 { font-size: 22px; color: var(--navy); }
h4 { font-size: 16px; color: var(--navy); margin-bottom: 8px; }
em { font-family: var(--serif); font-weight: 400; color: var(--navy-light); }
.lead { max-width: 620px; color: var(--muted); font-size: 18px; }
.actions { display: flex; gap: 12px; margin-top: 35px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 24px; border: 1px solid var(--navy); font-size: 13px; font-weight: 700; transition: .2s ease; }
.btn-primary { background: var(--navy); color: var(--white); }
.btn-primary:hover { transform: translateY(-2px); background: var(--navy-light); }
.btn-ghost { color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: var(--white); }
.hero-card { min-height: 410px; background: var(--silver-light); padding: 14px; transform: rotate(2deg); }
.hero-card-inner { height: 100%; background: var(--logo-blue); color: white; padding: 42px; display: flex; flex-direction: column; justify-content: flex-end; }
.number,.service-no { font-size: 11px; letter-spacing: .18em; color: var(--silver); font-weight: 700; }
.hero-card h2 { font-size: 30px; margin: 12px 0; color: var(--white); }
.hero-card p { color: #c4cbd6; }
.line { height: 1px; background: #2c4162; margin: 20px 0; }
.mini { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.section { padding: 110px 0; }
.section-heading { max-width: 760px; margin-bottom: 55px; }
.section-heading > p:last-child { color: var(--muted); max-width: 600px; }

/* Big cards - services techniques */
.big-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.big-card { background: var(--white); border: 1px solid var(--line); padding: 36px; }
.big-card-head h3 { margin: 0 0 10px; font-size: 26px; }
.big-card-head > p { color: var(--muted); font-size: 14px; margin-bottom: 30px; }
.sub-grid { display: grid; gap: 22px; padding-top: 24px; border-top: 1px solid var(--line); }
.sub-item p { color: var(--muted); font-size: 13.5px; }

.cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.cards-3 { grid-template-columns: repeat(3,1fr); }
.service-card { background: var(--white); border: 1px solid var(--line); padding: 34px; min-height: 240px; }
.service-card h3 { margin: 0 0 8px; }
.service-card p { color: var(--muted); font-size: 14px; }
.card-subtitle { color: var(--silver) !important; font-weight: 700; text-transform: uppercase; font-size: 11px !important; letter-spacing: .1em; margin-bottom: 10px !important; }

.section-dark { background: var(--navy-deep); color: var(--white); }
.section-dark h2, .section-dark .eyebrow { color: var(--white); }
.section-dark .eyebrow { color: var(--silver); }
.section-dark .section-heading > p:last-child { color: #b7c0cc; }
.service-card-dark { background: var(--navy); border: 1px solid #28395a; }
.service-card-dark h3 { color: var(--white); }
.service-card-dark p { color: #b7c0cc; }
.service-card-dark .service-no { color: #7f9bc4; }

.estimate-note { margin-top: 55px; padding-top: 35px; border-top: 1px solid #28395a; max-width: 680px; }
.estimate-note h3 { margin: 0 0 10px; color: var(--white); }
.estimate-note p { color: #b7c0cc; }
.btn-light { background: var(--white); color: var(--navy); border: 1px solid var(--white); white-space: nowrap; margin-top: 16px; }
.btn-light:hover { background: transparent; color: var(--white); transform: translateY(-2px); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; margin-bottom: 70px; }
.about-copy-light { max-width: 480px; color: var(--muted); font-size: 16px; }
.text-link { display: inline-block; margin-top: 20px; border-bottom: 1px solid var(--silver); padding-bottom: 5px; }

.team-cards { display: grid; gap: 18px; }
.team-card { background: var(--white); border: 1px solid var(--line); border-left: 4px solid var(--navy); padding: 26px 30px; }
.team-card p { color: var(--muted); font-size: 14px; }

.identity-box, .authorizations { background: var(--white); border: 1px solid var(--line); padding: 36px; margin-bottom: 24px; }
.identity-box h3, .authorizations h3 { margin-bottom: 22px; }
.identity-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.identity-grid div { font-size: 15px; }
.identity-grid span { display: block; font-size: 10px; text-transform: uppercase; letter-spacing: .15em; color: var(--silver); margin-bottom: 4px; font-weight: 700; }
.authority-issuer { margin: 24px 0 0; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; line-height: 1.7; }
.legal-note { color: var(--muted); font-size: 14px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
thead th { text-align: left; padding: 10px 14px; background: var(--silver-light); color: var(--navy); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
tbody td { padding: 10px 14px; border-bottom: 1px solid var(--line); color: var(--muted); }
tbody tr:last-child td { border-bottom: none; }

.contact-section { background: var(--silver-light); }
.contact-grid { display: grid; grid-template-columns: 1fr .72fr; gap: 100px; align-items: start; }
.contact-intro { max-width: 570px; color: var(--muted); }
.contact-languages { max-width: 570px; color: var(--muted); margin-top: -10px; margin-bottom: 25px; }
.contact-details { margin-top: 40px; display: grid; gap: 20px; }
.contact-details a, .contact-details div { font-size: 16px; }
.contact-details span { display: block; font-size: 10px; text-transform: uppercase; letter-spacing: .15em; color: var(--muted); margin-bottom: 3px; font-weight: 700; }
.contact-box { background: var(--white); padding: 38px; border: 1px solid var(--line); }
.contact-box p { color: var(--muted); }
.contact-box .btn { margin-top: 12px; }
.full { width: 100%; margin-top: 12px; }

footer { background: var(--navy-deep); color: white; }
.footer-top { padding: 40px 0; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 40px; }
.brand-logo-footer { height: 60px; filter: brightness(0) invert(1); }
.footer-coords p { margin: 0 0 6px; font-size: 12.5px; color: #c4cbd6; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; color: #c4cbd6; font-size: 12px; justify-content: flex-end; }
.footer-bottom { border-top: 1px solid #22314a; padding: 18px 0; color: #8a97a8; font-size: 11px; }

@media (max-width: 960px) {
  .big-cards { grid-template-columns: 1fr; }
  .identity-grid { grid-template-columns: 1fr; }
}
@media (max-width: 800px) {
  .nav { min-height: 96px; }
  .brand-logo { height: 68px; }
  .menu-toggle { display: block; }
  nav#main-nav { display: none; position: absolute; left: 20px; right: 20px; top: 96px; padding: 18px; background: var(--white); border: 1px solid var(--line); flex-direction: column; align-items: flex-start; gap: 15px; }
  nav#main-nav.open { display: flex; }
  .btn-nav { width: 100%; }
  .hero { padding: 75px 0; }
  .hero-grid,.split,.contact-grid { grid-template-columns: 1fr; gap: 45px; }
  .hero-card { min-height: 330px; }
  .cards,.gallery { grid-template-columns: 1fr; }
  .section { padding: 75px 0; }
  .footer-top { grid-template-columns: 1fr; align-items: flex-start; }
  .footer-links { justify-content: flex-start; }
}