:root {
  --color-primary: #1B3A6E;
  --color-primary-dark: #0F2245;
  --color-accent: #2563EB;
  --color-text: #0F172A;
  --color-muted: #475569;
  --color-subtle: #64748B;
  --color-border: #E2E8F0;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-bg-hero: #FAFBFD;

  --container: 1140px;
  --radius: 10px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Header ---- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; }

.brand-mark {
  width: 32px;
  height: 32px;
  display: block;
  border-radius: 7px;
}

.brand-name { font-size: 17px; }

.site-nav {
  display: flex;
  gap: 28px;
}
.site-nav a {
  color: var(--color-muted);
  font-size: 15px;
  font-weight: 500;
}
.site-nav a:hover {
  color: var(--color-text);
  text-decoration: none;
}

/* ---- Hero ---- */

.hero {
  padding: 96px 0 80px;
  background:
    radial-gradient(1200px 400px at 80% -50%, rgba(37, 99, 235, 0.08), transparent 60%),
    radial-gradient(900px 400px at 0% 0%, rgba(27, 58, 110, 0.06), transparent 60%),
    var(--color-bg-hero);
  border-bottom: 1px solid var(--color-border);
}

.eyebrow {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(36px, 5.4vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--color-text);
  max-width: 880px;
}

.lead {
  font-size: 19px;
  line-height: 1.55;
  color: var(--color-muted);
  max-width: 660px;
  margin: 0 0 32px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 22px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.005em;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.05s ease;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--color-primary-dark); }

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ---- Sections ---- */

.section {
  padding: 88px 0;
}
.section-alt {
  background: var(--color-bg-alt);
  border-block: 1px solid var(--color-border);
}

.section-head {
  max-width: 720px;
  margin: 0 0 48px;
}
.section-head h2 {
  margin: 0 0 14px;
  font-size: clamp(28px, 3.5vw, 40px);
  letter-spacing: -0.02em;
  font-weight: 700;
  line-height: 1.15;
}
.section-lead {
  margin: 0;
  font-size: 17px;
  color: var(--color-muted);
}

/* ---- Services grid ---- */

.grid {
  display: grid;
  gap: 20px;
}
.grid-services {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.card:hover {
  border-color: #CBD5E1;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}
.card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-primary);
}
.card p {
  margin: 0;
  color: var(--color-muted);
  font-size: 15.5px;
  line-height: 1.6;
}

/* ---- Features list (About) ---- */

.features {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 32px 48px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.features li {
  position: relative;
  padding-left: 20px;
}
.features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 2px;
}
.features h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
}
.features p {
  margin: 0;
  color: var(--color-muted);
  font-size: 15.5px;
}

/* ---- Contact ---- */

.contact-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.contact-card {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.contact-card h3 {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-subtle);
}
.contact-card p {
  margin: 0;
  font-size: 16px;
  color: var(--color-text);
  line-height: 1.55;
}
.contact-card a { color: var(--color-primary); font-weight: 600; }

/* ---- Footer ---- */

.site-footer {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--color-subtle);
}
.footer-inner p { margin: 0; }

/* ---- Mobile ---- */

@media (max-width: 640px) {
  .site-nav { gap: 18px; }
  .site-nav a { font-size: 14px; }
  .brand-name { display: none; }
  .hero { padding: 64px 0 56px; }
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 32px; }
}