:root {
  --color-primary: #0f2a44;
  --color-secondary: #2b6cb0;
  --color-accent: #edf2f7;
  --color-text: #1a202c;
  --max-width: 1100px;
  --radius: 6px;
  --transition: 0.25s ease;
}

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

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

.container {
  max-width: var(--max-width);
  margin: auto;
  padding: 0 1rem;
}

/* Header */
.site-header {
  background: #fff;
  border-bottom: 1px solid #e2e8f0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 700;
  color: var(--color-primary);
}

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

.main-nav a {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
}

.nav-cta {
  color: var(--color-secondary);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
}

/* Hero */
.hero {
  background: var(--color-accent);
  padding: 4rem 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

.hero h1 {
  font-size: 2.4rem;
  margin-bottom: 1rem;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.7rem 1.3rem;
  border-radius: var(--radius);
  text-decoration: none;
}

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

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

/* Sections */
section {
  padding: 4rem 0;
}

h2 {
  margin-bottom: 2rem;
  color: var(--color-primary);
}

/* Services */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  padding: 1.5rem;
  border-radius: var(--radius);
  transition: transform var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
}

/* Industries */
.industry-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.industry-list span {
  background: var(--color-accent);
  padding: 0.5rem 0.8rem;
  border-radius: var(--radius);
}

/* Insights */
.insight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.insight-card {
  border-left: 4px solid var(--color-secondary);
  padding-left: 1rem;
}

/* Careers */
.careers {
  background: var(--color-accent);
}

.careers-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

/* Contact */
.contact-form {
  max-width: 480px;
}

.form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  margin-bottom: 0.3rem;
}

input,
textarea {
  width: 100%;
  padding: 0.6rem;
  border-radius: var(--radius);
  border: 1px solid #cbd5e0;
}

/* Footer */
.site-footer {
  background: var(--color-primary);
  color: #fff;
  padding: 2rem 0;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-grid,
  .careers-grid {
    grid-template-columns: 1fr;
  }

  .main-nav {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .main-nav.open {
    display: block;
    position: absolute;
    top: 64px;
    left: 0;
    width: 100%;
    background: #fff;
    border-top: 1px solid #e2e8f0;
  }

  .main-nav ul {
    flex-direction: column;
    padding: 1rem;
  }
}