:root {
  --color-primary: #0066cc;
  --color-secondary: #00a86b;
  --color-dark: #1a1a2e;
  --color-light: #f8f9fa;
  --color-text: #333333;
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --max-width: 1200px;
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

html {
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  color: var(--color-text);
  line-height: 1.6;
  background-color: var(--color-light);
  overflow-x: hidden;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

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

header {
  background-color: white;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 50;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--color-primary);
  text-decoration: none;
}

nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  padding: var(--spacing-xs);
}

nav a:hover,
nav a:focus {
  color: var(--color-primary);
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
  padding: var(--spacing-xl) 0;
  text-align: center;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-button {
  display: inline-block;
  background-color: white;
  color: var(--color-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: bold;
  transition: var(--transition);
  border: 2px solid white;
}

.cta-button:hover,
.cta-button:focus {
  background-color: transparent;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

@media (max-width: 768px) {
  nav ul {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
}

@media (max-width: 320px) {
  html {
    font-size: 14px;
  }
  
  .hero h1 {
    font-size: 1.75rem;
  }
  
  nav {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

@media (min-width: 1024px) {
  .hero h1 {
    font-size: 3rem;
  }
}