:root {
  --blue: #2B7FD1;
  --blue-dark: #1F63A8;
  --blue-light: #EAF4FD;
  --navy: #102A43;
  --navy-soft: #1B3B5F;
  --ink: #1A2733;
  --ink-soft: #52606D;
  --border: #E3E9EF;
  --white: #FFFFFF;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(16, 42, 67, 0.08);
  --container: 1160px;
  font-size: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; font-weight: 700; }
p { margin: 0 0 1em; color: var(--ink-soft); }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: 1.1rem; color: var(--navy); letter-spacing: .5px; }
.brand-text small { font-size: .68rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .06em; }

.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a {
  font-size: .92rem;
  font-weight: 500;
  color: var(--ink);
  transition: color .15s ease;
}
.main-nav a:hover { color: var(--blue); }
.nav-cta {
  background: var(--blue);
  color: var(--white) !important;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 600 !important;
}
.nav-cta:hover { background: var(--blue-dark); color: var(--white) !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: none;
  background: none;
  cursor: pointer;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--navy);
  display: block;
  transition: transform .2s ease, opacity .2s ease;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  color: var(--white);
  padding-top: 96px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 20%;
  filter: saturate(0) brightness(0.9);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(16,42,67,.94) 10%, rgba(43,127,209,.88) 100%);
}
.hero-content {
  position: relative;
  max-width: 760px;
  padding-bottom: 64px;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .78rem;
  font-weight: 600;
  color: #CFE4FA;
  margin-bottom: 14px;
}
.hero h1 {
  font-size: clamp(2rem, 4.4vw, 3rem);
  color: var(--white);
  margin-bottom: 18px;
}
.hero-lead {
  color: #DCE9F7;
  font-size: 1.08rem;
  max-width: 620px;
  margin-bottom: 28px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  transition: transform .15s ease, background .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--white); color: var(--navy); }
.btn-primary:hover { background: #EAF4FD; }
.btn-ghost { border: 1.5px solid rgba(255,255,255,.55); color: var(--white); }
.btn-ghost:hover { background: rgba(255,255,255,.12); }

.stats-strip {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.16);
  margin-top: 48px;
}
.stat {
  background: rgba(16,42,67,.55);
  padding: 22px 18px;
  text-align: center;
}
.stat-num { display: block; font-size: 1.7rem; font-weight: 800; color: var(--white); }
.stat-label { display: block; font-size: .78rem; color: #CFE4FA; margin-top: 4px; text-transform: uppercase; letter-spacing: .05em; }

/* ---------- Sections ---------- */
.section { padding: 88px 0; }
.section-alt { background: var(--blue-light); }
.section-dark { background: var(--navy); color: var(--white); }
.section-dark p { color: #C7D6E6; }

.section-head { max-width: 640px; margin-bottom: 40px; }
.section-head.center { max-width: 640px; margin-left: auto; margin-right: auto; text-align: center; }
.kicker {
  text-transform: uppercase;
  letter-spacing: .1em;
  font-size: .8rem;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 10px;
}
.kicker-light { color: #8FC1EE; }
.section-head h2 { font-size: clamp(1.6rem, 2.6vw, 2.1rem); color: var(--navy); }
.section-dark .section-head h2, .section-dark h2 { color: var(--white); }
.section-sub { font-size: 1rem; }

/* About */
.about-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: start; }
.about-copy p { font-size: 1.02rem; }

/* Tech grid */
.tech-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.tech-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
}
.tech-card h3 { font-size: 1rem; color: var(--navy); margin-bottom: 14px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: .8rem;
  font-weight: 600;
  color: var(--blue-dark);
  background: var(--blue-light);
  border: 1px solid #CFE4FA;
  padding: 6px 12px;
  border-radius: 999px;
}

/* Services */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .18s ease;
}
.service-card:hover { transform: translateY(-4px); box-shadow: 0 14px 32px rgba(16,42,67,.12); }
.service-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: var(--blue-light);
  color: var(--blue-dark);
  font-weight: 800;
  font-size: .85rem;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.service-card h3 { font-size: 1.05rem; color: var(--navy); margin-bottom: 8px; }
.service-card p { font-size: .93rem; margin: 0; }

/* Timeline */
.timeline { display: flex; flex-direction: column; gap: 0; border-left: 2px solid #CFE4FA; margin-left: 8px; }
.timeline-item { position: relative; padding: 0 0 34px 32px; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -7px; top: 4px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--blue);
  border: 3px solid var(--blue-light);
}
.timeline-year { font-size: .8rem; font-weight: 700; color: var(--blue-dark); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 6px; }
.timeline-body h3 { font-size: 1.05rem; color: var(--navy); margin-bottom: 2px; }
.timeline-client { font-size: .9rem; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.timeline-body p:last-child { font-size: .93rem; margin-bottom: 0; }

/* Clients */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  align-items: center;
}
.client-logo {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 110px;
}
.client-logo img { max-height: 72px; width: auto; object-fit: contain; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.contact-lead { font-size: 1.02rem; }
.contact-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius);
  padding: 30px;
}
.contact-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 18px; }
.contact-list li { display: flex; flex-direction: column; gap: 4px; }
.contact-label { font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; color: #8FC1EE; font-weight: 700; }
.contact-list a { color: var(--white); font-size: 1rem; }
.contact-list a:hover { color: #8FC1EE; }

/* Footer */
.site-footer { background: #0B1E32; color: #9FB3C8; padding: 22px 0; font-size: .85rem; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .about-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .clients-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .main-nav {
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 16px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: flex; }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .tech-grid, .services-grid { grid-template-columns: 1fr; }
  .clients-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 64px 0; }
}