:root {
  /* Brand Colors */
  --primary-navy: #1a365d;
  --primary-navy-dark: #152c4a;
  --accent-orange: #ed8936;
  --accent-orange-hover: #dd6b20;
  --safety-yellow: #ecc94b;
  
  /* Neutral Palette */
  --text-main: #2d3748;
  --text-muted: #4a5568;
  --bg-light: #f7fafc;
  --bg-white: #ffffff;
  --border-color: #e2e8f0;
  
  /* Layout */
  --container-max-width: 1200px;
  --section-padding: 80px 20px;
  
  /* Effects */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
  --transition-fast: 0.2s ease;
  --transition-mod: 0.4s ease;
}

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

body {
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text-main);
  line-height: 1.6;
  background-color: var(--bg-white);
  overflow-x: hidden;
}

h1, h2, h3, h4, .font-heading {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary-navy);
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: var(--section-padding);
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
}

.btn-primary {
  background-color: var(--accent-orange);
  color: white;
}

.btn-primary:hover {
  background-color: var(--accent-orange-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--primary-navy);
  color: var(--primary-navy);
}

.btn-outline:hover {
  background-color: var(--primary-navy);
  color: white;
}

.text-center { text-align: center; }

/* Responsive Grid Helper */
.grid {
  display: grid;
  gap: 30px;
}

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}