:root {
  --primary-color: #1a365d;
  --secondary-color: #2b6cb0;
  --accent-color: #e53e3e;
  --light-bg: #f7fafc;
  --dark-text: #2d3748;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  color: var(--dark-text);
  line-height: 1.6;
  background-color: #fff;
}

header {
  background-color: var(--primary-color);
  color: white;
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

nav h1 {
  font-size: 1.5rem;
  letter-spacing: 1px;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: 500;
}

nav a:hover {
  color: #cbd5e0;
}

nav a[aria-current="page"] {
  color: #cbd5e0;
  border-bottom: 2px solid var(--accent-color);
}

.hero {
  background: linear-gradient(rgba(26, 54, 93, 0.85), rgba(26, 54, 93, 0.85)), url('https://images.unsplash.com/photo-1581092160607-ee22621dd758?auto=format&fit=crop&w=1350&q=80') center/cover no-repeat;
  color: white;
  text-align: center;
  padding: 5rem 1rem;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  max-width: 800px;
  margin: 0 auto 2rem;
}

.page-header {
  background: linear-gradient(rgba(26, 54, 93, 0.9), rgba(26, 54, 93, 0.9));
  color: white;
  text-align: center;
  padding: 3.5rem 1rem;
}

.page-header h2 {
  font-size: 2.25rem;
  margin-bottom: 0.75rem;
}

.page-header p {
  font-size: 1.1rem;
  max-width: 800px;
  margin: 0 auto;
  opacity: 0.9;
}

.btn {
  display: inline-block;
  background-color: var(--accent-color);
  color: white;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  border-radius: 4px;
  font-weight: bold;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn:hover {
  background-color: #c53030;
}

section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 1rem;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 2rem;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--secondary-color);
  margin: 0.5rem auto 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--light-bg);
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.card h3 {
  color: var(--secondary-color);
  margin-bottom: 0.75rem;
}

.clients-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.client-badge {
  background-color: #edf2f7;
  border: 1px solid #cbd5e0;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-weight: 500;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

footer {
  background-color: var(--primary-color);
  color: white;
  text-align: center;
  padding: 1.5rem 1rem;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  nav {
    flex-direction: column;
    gap: 1rem;
  }
  .hero h2 {
    font-size: 1.8rem;
  }
  .page-header h2 {
    font-size: 1.8rem;
  }
}