:root {
  --blue-dark: #1f3a5f;
  --blue-primary: #3b6ea5;
  --blue-soft: #eaf3fb;
  --blue-accent: #6fa8d8;
  --text: #23303d;
  --text-muted: #5b6b7a;
  --white: #ffffff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--blue-soft);
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(6px);
  z-index: 10;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 18px;
  padding-bottom: 18px;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--blue-dark);
}

.logo span {
  font-weight: 400;
  color: var(--blue-primary);
  margin-left: 6px;
}

nav a {
  color: var(--text-muted);
  text-decoration: none;
  margin-left: 28px;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

nav a:hover { color: var(--blue-primary); }

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--blue-soft) 0%, var(--white) 100%);
  padding: 100px 0 80px;
  text-align: center;
}

.hero h1 {
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--blue-dark);
  max-width: 720px;
  margin: 0 auto 20px;
  line-height: 1.25;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.btn {
  display: inline-block;
  background: var(--blue-primary);
  color: var(--white);
  text-decoration: none;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  transition: background 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  background: var(--blue-dark);
  transform: translateY(-1px);
}

/* Services */
.services {
  padding: 90px 0;
}

.services h2 {
  text-align: center;
  font-size: 2rem;
  color: var(--blue-dark);
  margin-bottom: 48px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--blue-soft);
  border-radius: 12px;
  padding: 32px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(59, 110, 165, 0.15);
}

.service-card h3 {
  color: var(--blue-primary);
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* Contact */
.contact {
  background: var(--blue-dark);
  color: var(--white);
  padding: 80px 0;
  text-align: center;
}

.contact h2 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.contact p {
  color: #cfe0f0;
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.contact a {
  color: var(--white);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--blue-accent);
}

.contact a:hover { color: var(--blue-accent); }

/* Footer */
.site-footer {
  padding: 24px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

@media (max-width: 640px) {
  .hero h1 { font-size: 1.9rem; }
  .service-grid { grid-template-columns: 1fr; }
  nav a { margin-left: 16px; }
}