/* Windows Hero — charte graphique commune */
:root {
  --navy: #0B2540; --navy-2: #132E4C; --navy-line: #1B3A5C; --navy-sep: #254468;
  --blue: #1D6FC4; --blue-dark: #15579E; --blue-light: #6EC1F5;
  --sky: #D9EBFA; --bg: #EEF3F8; --line: #DCE6EF; --line-2: #C7D6E4; --line-3: #B7CCE0; --line-4: #AFC4D8;
  --text: #0B2540; --text-2: #2A3A4D; --muted: #47586B; --muted-2: #8FA4BA;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Manrope', sans-serif; background: var(--bg); color: var(--text); -webkit-font-smoothing: antialiased; line-height: 1.5; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h1, h2, h3 { font-family: 'Space Grotesk', sans-serif; }
.wrap { max-width: 1240px; margin: 0 auto; padding-left: 40px; padding-right: 40px; width: 100%; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: #fff; box-shadow: 0 1px 0 var(--line), 0 4px 16px rgba(11,37,64,0.05); }
.site-header .wrap { padding-top: 16px; padding-bottom: 16px; display: flex; align-items: center; gap: 40px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 19px; }
.brand img { height: 50px; width: auto; flex-shrink: 0; }
.site-nav { display: flex; gap: 28px; font-size: 15px; font-weight: 600; }
.site-nav a:hover { opacity: 0.6; }
.site-nav a.active { color: var(--blue); }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 20px; }
.header-phone { font-size: 14px; font-weight: 700; }
.btn { display: inline-block; font-weight: 700; border-radius: 9px; transition: background .15s ease; }
.btn-navy { background: var(--navy); color: #fff; font-size: 14px; padding: 11px 20px; border-radius: 8px; }
.btn-navy:hover { background: var(--blue-dark); }
.btn-primary { background: var(--blue); color: #fff; font-size: 15px; padding: 15px 26px; }
.btn-primary:hover { background: var(--blue-dark); }
.btn-secondary { border: 1.5px solid var(--line-3); color: var(--text); font-size: 15px; padding: 13.5px 24px; }
.btn-secondary:hover { background: #E4ECF3; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1.5px solid var(--line-3); border-radius: 8px; padding: 8px 10px; cursor: pointer; font-size: 18px; line-height: 1; color: var(--text); }

/* Footer */
.site-footer { background: var(--navy); color: var(--muted-2); }
.site-footer .wrap { padding-top: 64px; padding-bottom: 32px; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.site-footer .brand { font-size: 17px; color: #fff; margin-bottom: 14px; }
.site-footer .brand img { height: 44px; }
.site-footer .about { font-size: 13.5px; line-height: 1.65; max-width: 260px; }
.site-footer .col-title { font-size: 13px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.site-footer .links { display: flex; flex-direction: column; gap: 10px; font-size: 13.5px; }
.site-footer .links a:hover { color: #fff; }
.site-footer .bottom { border-top: 1px solid var(--navy-line); padding: 22px 40px; text-align: center; font-size: 12.5px; }

/* Responsive */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; gap: 40px; padding-top: 56px; padding-bottom: 56px; }
  .hero h1 { font-size: 40px; }
  .hero-visual { max-width: 420px; }
  .grid-3 { grid-template-columns: 1fr; }
  .mission .wrap { grid-template-columns: 1fr; gap: 40px; padding-top: 72px; padding-bottom: 72px; }
  .site-footer .wrap { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .wrap { padding-left: 20px; padding-right: 20px; }
  .site-header .wrap { gap: 16px; flex-wrap: wrap; }
  .nav-toggle { display: block; }
  .site-nav { display: none; width: 100%; flex-direction: column; gap: 14px; padding-top: 12px; border-top: 1px solid var(--line); }
  .site-nav.open { display: flex; }
  .header-right { display: none; width: 100%; margin-left: 0; justify-content: space-between; padding-bottom: 6px; }
  .site-nav.open + .header-right { display: flex; }
  .hero h1 { font-size: 32px; }
  .hero-stats { gap: 18px; }
  .services, .work { padding-top: 64px; padding-bottom: 64px; }
  .section-intro h2, .mission h2, .cta h2 { font-size: 28px; }
  .work-grid { grid-template-columns: 1fr; }
  .quote { padding: 28px; }
  .site-footer .wrap { grid-template-columns: 1fr; gap: 28px; }
  .site-footer .bottom { padding-left: 20px; padding-right: 20px; }
}