:root {
  --primary: #0891B2;
  --primary-dark: #044f61;
  --accent: #22C55E;
  --accent-hover: #1b9d4b;
  --bg-primary: #ECFEFF;
  --bg-secondary: #e4f6f7;
  --bg-card: #fff;
  --text-primary: #164E63;
  --text-secondary: #555;
  --border-color: #A5F3FC;
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Open Sans', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
}

h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

h4 {
  font-size: 1.5rem;
  margin-bottom: 0.875rem;
}

h5 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

h6 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  font-size: 1.125rem;
  line-height: 1.7;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.auto-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.grid-12-cols {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 2rem;
}

.section-spacing {
  padding: 5rem 0;
}

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

.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.card-3d-hover {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-3d-hover:hover {
  transform: perspective(1000px) rotateY(5deg) translateY(-10px);
  box-shadow: 0 20px 40px rgba(8, 145, 178, 0.2);
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .auto-container {
    padding: 0 1rem;
  }
  
  .grid-12-cols {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .section-spacing {
    padding: 3rem 0;
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  h3 {
    font-size: 1.75rem;
  }
}

@media (max-width: 480px) {
  .auto-container {
    padding: 0 0.75rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  p {
    font-size: 1rem;
  }
}