:root {
  --primary-color: #2b6cb0; /* Professional Blue */
  --secondary-color: #38a169; /* Natural Green */
  --text-color: #2d3748;
  --bg-color: #f7fafc;
  --white: #ffffff;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
}

header {
  background-color: var(--white);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 20px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--primary-color);
}

.btn, .cta-button {
  display: inline-block;
  background-color: var(--secondary-color);
  color: var(--white);
  padding: 12px 24px;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
  text-align: center;
  transition: background-color 0.3s, transform 0.2s;
  border: none;
  cursor: pointer;
}

.btn:hover, .cta-button:hover {
  background-color: #2f855a;
  transform: translateY(-2px);
  color: var(--white);
}

main {
  padding: 40px 0;
}

article {
  background: var(--white);
  padding: 40px;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

h1, h2, h3 {
  color: var(--primary-color);
  margin-bottom: 20px;
  margin-top: 30px;
}

h1 {
  font-size: 2.5rem;
  line-height: 1.2;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 20px;
  font-size: 1.1rem;
}

ul {
  margin-bottom: 20px;
  padding-left: 20px;
}

li {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.blog-card {
  background: var(--white);
  border-radius: 8px;
  padding: 25px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
  transition: transform 0.3s;
}

.blog-card:hover {
  transform: translateY(-5px);
}

.blog-card h3 {
  margin-top: 0;
  font-size: 1.4rem;
}

.blog-card p {
  font-size: 1rem;
  color: #4a5568;
}

.read-more {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

.read-more:hover {
  text-decoration: underline;
}

.related-posts {
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid #e2e8f0;
}

.cta-section {
  background-color: #ebf8ff;
  border: 2px solid #bee3f8;
  padding: 30px;
  text-align: center;
  border-radius: 8px;
  margin: 40px 0;
}

.cta-section h2 {
  margin-top: 0;
}

footer {
  background-color: #1a202c;
  color: var(--white);
  text-align: center;
  padding: 40px 0;
  margin-top: 60px;
}

footer a {
  color: #bee3f8;
  text-decoration: none;
}

footer p {
  font-size: 0.9rem;
  margin-bottom: 10px;
}